Nitrogen Generator Product

Nitrogen making machine

PSA Nitrogen Generator Working Principle

Dehydration processing of food drying equipment

The commonly used methods of dehydration are natural drying and artificial dehydration. Artificial dehydration includes oven drying, microwave drying, puffing drying, infrared and far infrared drying, vacuum drying, etc. At present, the more advanced artificial dehydration method is freeze vacuum dehydration. The product can not only retain the original color, aroma, ambiguity and shape of fresh vegetables, but also has ideal rapid rehydration. The technological process is: raw material selection → cleaning → peeling → cutting → blanching → cooling → draining → freezing → vacuum drying → sorting → packaging.
At present, an important trend of food processing technology is to maximize the nutrition and color and flavor of food, and the selection of food drying equipment has a great impact on the nutrition, color and flavor of food products. Food drying is a necessary measure to improve food storage and quality. The performance of dryer directly affects the quality and value of dried food. In recent years, China has developed a variety of multi-functional, high efficiency, low energy consumption, strong adaptability dryer, food drying technology and equipment has made a lot of progress.
In recent years, China's food drying equipment has accounted for more than 80% of the domestic market. Its food drying equipment industry mainly focuses on conventional drying equipment, which can basically manufacture all kinds of conventional food drying equipment, and its price is only 1 / 3 of that of foreign similar products, which makes China's drying equipment have obvious price advantage over imported equipment in market competition Due to the large volume of drying equipment, most of them also involve on-site installation, commissioning and after-sales service, so it is more convenient for domestic users to choose domestic equipment than imported equipment. This also indicates the end of China's drying equipment import history.

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Reasonable design of research objectives, break the bottleneck of Apple industry development in China

China is a major apple producer, accounting for 48% of the world's output and 16% of China's total fruit production. But it is worth noting that China is not a strong apple industry. The development of Apple industry still faces many difficulties: low storage technology and standard level, large storage loss, loss rate of about 10%~15%, much higher than 3%~5% in developed countries; The backward processing technology leads to the quality and safety problems of products such as Browning, excessive secondary precipitation of trotramycin and excessive pesticide residue, which makes the products lack of international competitiveness. The low level of comprehensive utilization of apple dregs and large waste of resources have become the shackles restricting the rapid and healthy development of Apple industry in China.

The goal of energy saving in fruit and vegetable juice processing was realized by using flash dryer drying technology

According to the research objectives and tasks set up, the project started from the national Plan for tackling key problems in the sixth five-year Plan, focused on the key points of national agricultural science and technology innovation in each period, carried out original innovation and integrated innovation research on apple concentrated shrinkage juice processing, comprehensive utilization, storage and preservation, etc., and made many breakthroughs.

The project has established the comprehensive utilization technology system of apple processing by-products: it has created the drying technology of the quick energy-saving dryer and the microwave extraction technology of pectin, invented the quick grading and molecular modification technology of pectin, and developed the high-quality pectin. The technology of flash steaming titian and high-power natural apple flavor were independently developed to realize efficient recovery of fruit juice aromatics. Efficient preparation techniques such as sodium carboxymethyl cellulose were established to provide a new way for the utilization of whole fruit.

The results also systematically studied the pathogenesis and preservation technology of apple tiger skin disease. It was clear that the oxidation product of farnene was the cause of the occurrence of tiger skin disease, and high concentration of CO2 pretreatment after picking could effectively inhibit the occurrence of tiger skin disease. It was found that Fuji apple was highly sensitive to CO2 in storage, independently developed high-permeability CO2 plastic wrap, and constructed a simple air-regulated storage model of low-temperature spontaneous air-regulated bag preservative. A series of standards for apple harvest and storage were established, which laid a foundation for the construction of apple industry technical standard system.

The implementation of the project has achieved remarkable results, breaking a new path for the development of China's Apple industry

The project has passed the project acceptance and result appraisal organized by the Ministry of Science and Technology, the Ministry of Education and other units. Experts agree: the project for the first time the directional adsorption technology to solve the Browning of apple juice concentrate, secondary opacity, control content and pesticide residues, first set up the index system of the characteristics of apple juice and counterfeit detection model, for the first time in apple juice processing technology has carried on the system research, there are a number of technology innovation, project overall level reaches the international advanced, to promote apple juice processing industry in our country's overall level has greatly promoted.

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Dehumidification principle of wood drying equipment

The following is to introduce the dehumidification principle of wood drying equipment:

The dehumidification principle of lumber drying equipment is to use not saturated wet air to blow the wood that is dried, the equipment that absorbs moisture among them, to improve the moisture absorption ability of wet air, heat wet air first commonly. When the wood drying equipment makes the wet air pass through the heater under constant pressure, the outside world heats the wet air and the temperature of the wet air rises. However, the moisture content of wet air is not increased, and there is no condensation and precipitation of steam, so the relative humidity decreases for the same reason, so the hygroscopic ability is improved. It can be seen that the heating process in the heater is a constant humidity process of increasing temperature and enthalpy. When the heated wet air enters the dryer to dry wood, the heat release of the wet air (reducing the enthalpy of the wet air) makes the moisture in the wet material vaporize and enter the air, increasing the enthalpy of water vapor contained in the air. Thus, the drying process can be approximated as a definite enthalpy process in which air temperature decreases gradually and humidity increases gradually.

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Operating points of hollow blade dryer

On the basis of absorbing advanced technology at home and abroad, the hollow blade dryer, which is improved and optimized by our company, can indirectly heat or cool paste, granule, powder and paste materials, and can complete unit operations such as drying, cooling, heating, sterilization, reaction and low-temperature calcining. The special wedge-shaped stirred heat transfer blade in the drying equipment has higher heat transfer efficiency and self-cleaning function of heat transfer surface.

1. Discharge condensed water in the steam line, and then close the globe valve.

2. Open the air switch in the electric control cabinet (the corresponding red light will be on) and start the circulation fan in each heating chamber.

3. When the temperature in the drying room reaches 145℃, set the "on" position of the speed regulating motor controller, and then rotate the speed regulating knob clockwise to make the pointer reach the desired position. At the same time adjust the tightness of the conveyor chain, and then begin to feed the dryer. Special: pay attention to the uniformity of the feeding end.

4. Open the steam supply globe valve and heat the drying chamber. When the steam working pressure is 0.4~ 1.0mpa, it can give full play to the excellent performance of the machine.

5. Control the humidity in the drying room by adjusting the Angle of inlet and outlet air valves, so as to achieve a good drying state of materials.

6. When the latter batch of materials leave the dryer, the steam supply globe valve can be closed, and then the fan can be closed later (the corresponding green light shows off).

7. When ^ the last batch of material hollow blade dryer, shut down the main drive (corresponding display green light off), then turn the speed regulating knob counterclockwise to zero, and the controller switch is placed in the "off" position (corresponding display red light off).

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Ammonia decomposing furnace

Safety operation procedures for continuous bright annealing furnace of strip steel in ammonia decomposition furnace
1、 The operator must go through three-level safety education and pass the examination before taking the post.
2、 Safety regulations for blowing in:
1. Routine inspection must be carried out on the electrical appliances and machinery of ammonia calciner before blowing in, and the electrical appliances and equipment must be in good condition and grounded firmly;
2. Turn on the ammonia decomposition furnace normally. To ensure the normal supply of gas.
3. When the temperature of annealing furnace reaches 200 ℃, cooling water will be supplied;
4. When the furnace temperature reaches 600 ℃, apply N2 and clean the furnace with N2.
5. When the furnace temperature reaches 800 ℃, the oxygen content in the furnace is less than 0. When it is 5%, the gas is decomposed by ammonia.
6. It is strictly forbidden to pour the steel belt.
7. The H2 and N2 hoses must be disassembled after each shutdown.
8. No fireworks are allowed in the workplace.
3、 Safety regulations for boiler shutdown
1. Cut off the power supply of each heating zone and cut off the power supply (100 ℃ / time). The temperature of each area decreased evenly.
2. When the temperature of ammonia decomposition furnace drops to 800 ℃, the ammonia decomposition gas is replaced by nitrogen. After the fire of the front emptying pipe is extinguished, continue to clean the furnace hall with small flow of nitrogen, and stop filling nitrogen when it reaches 600 ℃.
3. Stop the fan when the temperature of ammonia decomposition furnace drops to 300 ℃.
4. Stop water when the temperature of ammonia decomposition furnace drops to 200 ℃.
5. After the annealing furnace is finished, there should be a guide belt in the furnace for the next time.

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Technical safety precautions of high frequency welder

(1) It should be noted that salt-salt-above a certain temperature will catch fire and cause fire and explosion accidents, therefore, it is not allowed to exceed the high frequency welding machine * high temperature.

(2) should be special note high frequency welding machine meaning saltpeter bath should not be mixed with charcoal, sawdust, oil, etc., in order to avoid saltpeter and carbon combined to form explosive substances caused by explosion.

(3) The workpieces and tools of high frequency welding machine must be dried before entering salt-salt-bath. It is strictly prohibited to bring water into salt-salt-bath, so as not to cause splashing of molten salt or injury caused by explosion.

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The forging furnace is easy to operate

There are many kinds of forging furnace. According to different power sources, forging furnace can be divided into flame furnace and electric furnace. According to the different fuels used, the flame furnace can be divided into oil furnace, gas furnace and coal furnace, while the gas furnace can be divided into natural gas forging furnace and gas heating furnace. According to the different structure of heating chamber, it can be divided into chamber furnace (single chamber furnace, double chamber furnace) semi-continuous furnace and continuous furnace. According to the furnace bottom structure and mechanization form is divided into trolley furnace and bottom furnace (also known as ring furnace). Different furnace structure should be selected under different production conditions, and chamber furnace should be selected as far as possible for small batch production of single piece, trolley furnace should be used for large and medium-sized forgings, and rotary bottom furnace should be used for small and medium-sized forgings. The selection of furnace type must also consider the fuel type, the quality and size of the heated billet, economic and labor conditions, etc.
Reverberatory furnace

The reflector is a flame heating furnace using bituminous coal as fuel. The reflector is mainly composed of combustor, heating chamber, air supply device, heat exchanger and flue, chimney, etc.
Heavy oil and gas furnaces

The structure of gas and natural gas is basically the same. There is no special combustion chamber, but the heavy oil or gaseous fuel and air are injected directly into the heating chamber by the nozzle or burner (burner, burner). But the burner is different, heavy oil burner, natural gas burner and gas burner are not the same.
Gas forging furnace

Forging furnace is on the basis of the original coal furnace improved equipped with gas from the gas generator for combustion heating furnace type, generally choose according to forging furnace size configuration suitable producer gas generator, the size of a small 1.3 configurations of ordinary small producer gas generator, also have a large forging enterprise, with a gas generator with many sets of forging furnace. Compared with the combustion chamber of the original reverberatory furnace, the gas produced by the gas generator is directly injected by the gas burner into the greenhouse with higher efficiency than that of the reverberatory furnace and basically no emission pollution.
Resistance furnace

It USES resistance generators to convert electrical energy into heat energy to heat the metal. It is mainly used for heating superalloys and non-ferrous metals and their alloys with strict temperature requirements.

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Heat loss of trolley furnace

Different degrees of heat loss often occur in the process of practical application of electric furnace for trolley, which mainly manifests in the following aspects.

Exhaust heat loss: The heat taken away by the discharge of flue gas is called exhaust heat loss. This kind of heat loss can reach about 4%-8%, which is recognized as the biggest one in the heat loss of electric car furnace. The larger the volume of general smoke, the higher the exhaust temperature, the more heat loss.  

Incomplete fuel combustion loss: The heat loss caused when fuel is burned in the furnace, usually some solid combustibles are excluded from the furnace without participating in combustion or without burning out. It includes the loss of coal leakage that part of the fuel is discharged into the ash bucket through the grate; The ash loss caused by the unburned combustibles wrapped in ash and discharged into ash bucket; Loss of fly ash from unburned carbon particles carried away by smoke. Among them, the heat lost by fly ash is the largest.

Heat loss: due to the metal structure of boiler unit, furnace wall flue are exposed to the atmosphere, they will be to the outside air to lose a certain amount of heat, this is the heat loss. Heat dissipation loss is usually directly related to the external area, heat preservation and thermal insulation of electric furnace unit.

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Reasonable operation is the key to prolong the service life of trolley furnace

Trolley furnace is really large energy consumption, with the electric furnace as an example, one is the trolley furnace device capacity. An ordinary RJX-30-9 box resistance furnace has a power of 30kW, while an ordinary C162 lathe has a capacity of only 7kW. Some large stoves can be installed with a capacity of hundreds of kilowatts, or even nearly a thousand kilowatts. Second, the working time of electric furnace is long. Generally speaking, the furnace from heating to heat preservation to continue the time, some open the furnace to continue to work for a few days, even as long as months to stop the furnace, and the general cold processing equipment work nature is completely different.

After the lining is knotted well, how to operate correctly and rationally is the key to prolong the service life of the trolley furnace and guarantee the life. - Generally speaking, check whether the water flow in the water cooling system is unobvious, whether the water pressure and temperature of cooling water are normal, whether there is leakage phenomenon, and whether the hydraulic system can work normally before operating the trolley furnace. The operation should be done, careful not to touch randomly, one person operation, one person monitoring, and strictly prohibit miscellaneous personnel into the machine room, prevent electric shock. The melting process to use the dry melting, and do light discharge, frequent feeding, when the melting furnace melt to reach the need should be poured out in time, to avoid high temperature increase lining loss; Frequent observation, when found that the outside of the furnace redness phenomenon, this is the precursor to the furnace leakage, should be promptly taken to shut down the intermediate frequency power supply, pour out of the furnace molten material and other measures, to avoid the occurrence of furnace leakage accident. In use should also pay attention to, when found that the furnace lining becomes very thin, can not continue to use, should break off the old lining to do a new lining, to prevent furnace leakage accident.

As a result of the diversity of hot processing materials and processing technology, as well as the different technical experience and operating habits, resulting in the furnace structure on the various. Therefore, in the trolley furnace non - standard equipment. In general machinery factory, trolley furnace non-standard equipment accounts for about 60%~70%.

In order to adapt to the development of production, the non-standard trolley furnace often needs to be modified, so it is difficult to establish the standard repair process. Non-standard trolley furnace with various components is not easy to achieve standardization, generalization and serialization, repair must be prepared before each, which increases the difficulty of repair work.

Trolley furnace, whether non-standard equipment or standard equipment, are on-site repair. The arrangement of time and space, the delivery of materials for repairing the furnace, the preparation of tools and appliances, the supply of energy such as water, electricity and compressed air, and the maintenance of sanitation on the site should be arranged comprehensively according to the production and site conditions. This puts forward higher request to the organization of repair work.

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Defects and countermeasures of carburizing parts in quenching furnace are common

The carburized layer presents large bulk or reticular carbides

Mesh belt furnace defects cause: high surface carbon concentration

1. Drip carburizing, drip too large

2. Control atmosphere carburizing, rich gas too much

3. Liquid carburizing, salt bath cyanide root content is too high

4. Carburizing and quenching furnace air cooling, cooling rate is too slow

Countermeasures:

1. Decrease the surface carbon concentration, reduce the amount of drops in the dispersion period and improve the humidity in the dispersion period, and also reduce the amount of drops in the carburization period

2. Carburizing agent to reduce solid carburizing

3. To reduce the content of cyanogen in liquid carburizing

4. Summer room temperature is too high, after infiltration air cooling parts can be blown cold

5. Improve the quenching heating temperature of 50~80 C and extend the heat preservation time appropriately

6. Two mesh belt type quenching furnace quenching or normalizing + quenching, but also normalizing + high temperature tempering, then quenching furnace tempering

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Check the preparation work of table furnace produced by electric furnace factory

Last we did a detailed introduction and explanation of the Danyang electric furnace. This article we simply to the electric furnace factory production table furnace preparation work inspection items to describe, as a professional manufacturer electric furnace factory co., LTD., will try our best to sort out and publish all kinds of related knowledge, wholeheartedly for your service.

Table furnace preparation inspection items produced by electric furnace factory:

1. Check whether the power supply of the equipment is normal, whether there is phase break, short circuit or bare wire, etc.

2. Check whether the connection of grounding device is in good condition.

3. Check whether there is any damage to the heating element, whether the contact of each connection is good, whether there is any contact with the trolley furnace body and housing.

4. Check the temperature control system for abnormal phenomena.

5. Check whether the lifting of the furnace door and the running of the trolley are normal.

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Net belt blackening production line

Net belt blackening production line (absolutely environmentally friendly)

Normalizing furnace, net belt furnace type blackening furnace USES the workpiece to heat, reuses the environmental protection to send black liquid to soak and becomes. Completely different from the traditional sodium nitrite solid melting and blackening, it greatly improves the production efficiency, reduces the labor intensity and cost, improves the working environment of workers, and meets the requirements of high efficiency, energy saving and environmental protection.

It is applicable to the blackening process after pretreatment (no oil stains, no rust) of elastic strip, spring, hardware, standard parts, fasteners, bicycle parts and other metal parts, etc., and is suitable for mass production.

Process flow: manual feeding → cleaning machine → heating → blackening → drying → oiling → discharging

Maximum voltage: 380V Rated temperature: 350℃-400℃ Power: more than 11kW

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Measurement and control system of rotary furnace

As a large calcining equipment, the production process of the rotary furnace is relatively complex, so its production needs to be set up and monitored to test the running state. In order to help you better understand and use this equipment, this paper shares its measurement and control system with you.

1. Automatic control of temperature outside the roller
The temperature of the rotary furnace is automatically controlled, and the system can realize the automatic control of the temperature outside the drum. Furnace temperature can be set below the rated temperature, temperature control accuracy is less than 2 degrees. By controlling the external temperature of the drum, the temperature of the material in the drum can be controlled.
2. Exhaust outlet temperature detection
A bimetal thermometer is installed on the vent at the upper end of the air supply hood, mainly used to detect the temperature of the vent and display it on site, so as to observe the temperature change.
3. Roller speed regulation
The speed regulation of the drum is realized by the frequency conversion speed regulation of the driving motor. The operation panel of the inverter is installed on the panel of the control cabinet, which is convenient for operation and helpful for the operation of the equipment.
4. Feeding speed adjustment
Feeding speed is regulated by screw feed motor frequency conversion. The inverter operation panel of the converter is installed on the panel of the control cabinet for easy operation. Feeding speed should be decided in the trial production stage, and gradually groped to increase, confirm the appropriate feeding speed, not too fast.
5, dust removal fan frequency adjustment
Dust removal fan adopts frequency conversion speed regulation, flexible and convenient. The operation panel of inverter is installed on the panel of control cabinet for easy operation.

Through the above introduction, it is not difficult to find the composition of the measurement and control system of the rotary furnace, their existence is an auxiliary role for the equipment, and easy to operate, it needs to pay attention to the standard operation, so as to help the long-term use of the equipment.

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Five main steps of gas nitriding furnace

Gas nitriding furnace has the characteristics of low temperature, short time, small deformation of the workpiece, properties: high fatigue limit and good wear resistance.

1. The gas nitriding furnace prior to nitriding must be a normalizing or tempering treatment of the workpiece.

2. First use gasoline and alcohol to scrub the surface of the workpiece in the gas nitriding furnace, not rust spots, oil stains, dirty presence.

3. After loading into the furnace, tighten the pressing bolts of the furnace cover symmetrically.

4. Circulate the cooling water through the inlet of the furnace tank and the furnace cover. The lower end of the cooling water in the pipeline on the cover of the gas nitrification furnace is inlet water, while the upper end is outlet water. Inlet water is fed into the furnace tank separately and discharged separately. All water pipes in the cover of the gas nitrification furnace can be connected in series according to the principle of low inlet and high, with one inlet and one outlet discharging.

5 gas nitriding furnace before the temperature should be sent to exhaust nitrogen, exhaust flow should be more than twice the use.

Exhaust after 10 minutes, to set the temperature control meter to 150 ℃, automatic heating switch to open, exhaust gas nitriding fireside and heated to 150 ℃ for 2 h and exhaust, and then to set the temperature control meter to 530 ℃, the ammonia flow down, maintain positive pressure in the furnace, vent has smaller flow upward pressure, when the temperature rises to 530 ℃, constant temperature constant current nitriding 3-20 h, then up the ammonia pressure, keeping the exhaust moderate pressure, nitriding 4-70 - h, then ammonia pressure down, back n 1 to 2 h, cut off power supply, give a small amount of ammonia, maintain positive pressure in the furnace, Ammonia supply can be stopped until the furnace temperature drops below 150℃.

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AC2000 air source processor oil water separator

Technical parameters:

1. Model: AC2000

2. Combination: AF2000 (air filter) +AL2000 (oil mist) +AR2000(pressure regulating valve)

3. Pipe diameter: G1/4

4. Working medium: air

5. Ensure pressure resistance: 1.5mpa

6. Ambient temperature: 5~60°C

7. Filter aperture: 40um

8. Recommended lubrication oil: Turbine No. 1 oil (IOS VG32)

9. Water filter glass capacity: 60CC

10. Feed glass capacity: 90CC

11. Weight: 0.75kg

12. Material of main accessories (body material: aluminum alloy, cup material: PC, protective cover: plastic)

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Analysis on the use stage of well furnace

There are several stages in the operation of a well furnace:

Furnace installation, exhaust and temperature rise:
1, after the well furnace to the temperature insulation 0.5~1h, make the temperature uniform, into the parts, hanging parts should be more than 10mm gap, to ensure that the gas unblocked.
2, the parts must be placed in the effective heating zone of the furnace tank, the upper end should not exceed the exhaust pipe, the lower end should keep a certain distance from the intake pipe, after installing the furnace exhaust time is about 20~60min.
3. The sample should be placed in three different positions: upper, middle and lower.
4, after the installation of the furnace, should immediately send infiltration agent exhaust (ethanol drops), when the temperature of the furnace to the specified temperature, in the outlet of the exhaust gas, such as the flame does not point, should increase the amount of infiltration agent or timely clean up the pipe pile.
5, the new furnace and the new fixture should be pre-nitriding treatment for 3~5h.
Insulation stage:
1. Check whether the ammonia decomposition rate and flow rate are normal at any time. When the furnace temperature meets the requirements and the ammonia decomposition rate is unstable, adjust the flow rate of ammonia gas, increase the flow rate, reduce the decomposition rate, and increase the decomposition rate.
2. In some nitrification tanks, the ammonia decomposition rate increases during long-term use. In order to stabilize the ammonia decomposition rate, 800~960 C 2~4h denitrification treatment is required after the furnace is shut down.
Furnace cooling:
Parts with high fatigue strength requirements shall be oil-cooled and silver-gray parts shall be required on the surface. Under the protection of ammonia or cracking gas, the lifting tank shall be cooled to 200 C before opening the tank to retrieve the workpiece.

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Gear shaft high frequency quenching machine quenching process

Gear shaft is a shaft and gear synthesis, is the support of rotating parts. Often used in cars, buses, excavators and other mining equipment. It plays an important role in the operation of mechanical equipment. In the operation of equipment, the gear bearing is required to be subjected to huge friction force, so it is required to have a strong hardness, wear resistance and a long service life. High-frequency quenching machine is widely used in this industry, in the quenching process, the effect is very good.

The surface quenching of gear shaft by high frequency quenching machine is mainly realized by the combination of rapid heating and immediate quenching cooling. The operation is not practicable and local overheating and melting often occur. Due to the different structure of gear shaft, it is difficult to use mechanical automatic method for flame surface quenching in production, and most of them are operated manually. The gear shaft and other quenching parts are quenched one by one by means of circular inductor. Using rapid heating in the process of hardening the surface quickly reach the temperature of quenching, range and quantity of heat to center the rapidly cooling, it can only make the gear shaft surface is hardened to martensite, and the center is still not quenching organization, after quenching, the surface will have a layer of hardening layer, about 2-3 mm, just because of the hardening layer, make gear shaft hardness and wear resistance is greatly increased. The specific application should be determined according to the actual diameter of the gear shaft.

The high frequency quenching machine USES the numerical control system and the import component. Strictly check each device, do not have a detail, to avoid the instability of the equipment. By adjusting the speed and temperature of workpiece moving, automatic continuous quenching treatment of gear shaft can be realized. Fast quenching speed and short quenching time can effectively avoid oxidation and decarburization of gear shaft and ensure the quenching effect of gear shaft. Advanced high-frequency quenching machine replaced the old quenching heating equipment, environmental protection and energy saving, energy saving, energy saving, improve production efficiency, reduce labor costs.

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How do you tell if the camshaft sensor is broken

Small series with you to learn about the camshaft position sensor detection method and fault diagnosis and elimination method:
Methods/Steps

Disconnect the ignition switch and press the sensor wire to connect. Plug the device and connect the positive and negative meters of the multimeter with terminals 1 and 3 respectively. When the ignition switch is switched on, the voltage shall be above 4.5V. If the voltage is zero, the wiring harness has a break or a short circuit. Or the ECU is faulty; When the ignition switch is disconnected, the conductor should be continued to detect whether there is a break or short circuit;

2. The resistance value between the 3 terminals of the sensor and the 67 terminals of the ECU shall not be greater than 1.5 ohms. If the resistance is too large or infinite, it indicates that the wire harness has bad contact or the wire is broken, the wire harness should be repaired or replaced.

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What are the filtering forms of vacuum oil filter?

In the operation stage of the vacuum oil filter, the filter should test the vacuum value, pressure value, heating control, oil pump, vacuum pump operating stability and other tests.

Use logistics transport to reach the user site, need to determine whether the appearance is damaged, whether the mechanical part is loose. Connect the power supply and ground wire, the power distribution cabinet, oil pump, vacuum pump, electric heater wiring should be checked, to ensure that the connection is firm, reliable insulation.

The oil filter is connected to the power supply and ground wire. Before the oil filter works, the oil filter must be placed in balance, and the vacuum pump oil must be injected to make the oil level reach the normal position. Start the pump motor and vacuum pump motor on trial. Observe whether the rotation direction is consistent with the label. If not, switch the power supply phase.

The vacuum oil filter is a general equipment for oil purification, but the dynamic characteristics of its working process and the quality of deep purification still need to be further studied and discussed.

On the basis of the study of the working principle and structure characteristics of the vacuum oil filter, the key problems in different working conditions of the equipment are analyzed, and the improvement ideas for its system structure are put forward to improve the oil purification effect and efficiency of the traditional oil filter equipment.

Vacuum oil filter for oil containing impurities, water, gas, the use of vacuum oil filter can improve the cleanliness of oil products, filter water to improve oil pressure resistance, improve insulation. Due to the difference of oil filter, the structure and working process of vacuum oil filter are different, but the working principle is the same.

Before the vacuum oil filter works, the filter must be placed in balance, and the vacuum pump oil must be injected to make the oil level reach the normal position. The oil pump motor and vacuum pump motor should be started for test. Observe whether the rotation direction is consistent with the label. Test rotation of vacuum pump motor, oil pump motor, etc.

Hydraulic oil in the process of running, water, gas, volatile substances due to various reasons inevitably mixed with oil, accelerate the oxidation of oil, and add to the foam, fouling and the formation of sludge, decrease the oil lubrication, cooling, dispersion and cooling performance, cause the corrosion and wear of the metal parts at the same time, the influence of hydraulic system, power system, the normal operation of the lubrication system.

Transformer oil vacuum filter oil can quickly remove water, gas, impurities and volatile (gasoline, diesel oil, kerosene, etc.) in the oil. Improve oil quality, restore lubricating oil viscosity, flash point and service performance. Ensure the normal operation of hydraulic system, power system and lubrication system.

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Oil filter equipment operation is simple, remarkable effect

Inside the filter there is a rotor with a dual jet nozzle, which is driven only by the pressure generated by the oil. After the equipment is turned on, the oil in the oil tank is sent to the rotor through the pump, and the oil is discharged along the nozzle at the bottom of the rotary table when the oil is full of the rotor. Then the driving force is generated to make the rotor rotate at a high speed.

Its rotation speed can reach more than 4000-6000r.p.m., and the force generated is more than 2000 times that of gravity. The centrifugal force principle directly drives the impurities to be separated from the oil. Even 1 m of hard, sharp, abrasive metal material can be removed, together with residues that cause parts to wear out or oil to deteriorate. The separated impurities are attached to the impurity collection cover in the rotor and only need to be cleaned regularly. In addition, because the specific gravity of water is higher than that of oil, under the action of centrifugal force, the water will be separated from the oil and stored in the rotor oil pan. It only needs to be removed during cleaning, and the filtered oil will flow directly back to the oil tank of the oil filter through gravity.

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What is the main working principle of coalescing dewatering oil filter

 

Coalescing dehydration oil filter adopts "coalescing separation" dehydration technology, which integrates the functions of precision filtration and university filtration. It can efficiently remove the particulate pollutants, emulsified water, dissolved water and free water in the oil, and the filtration accuracy can reach LEVEL NAS4-6 to achieve continuous operation and unattended operation, which does not use vacuum separation technology.

Main working principle of coalescing oil filter
Coalescence separation is equipped with two filter elements with different functions: coalescence filter element and separation filter element. When the oil flows through the coalescer, it goes through four process stages of filtration, coalescing, sedimentation and separation to achieve the function of filtering out particulate pollutants and water.

The oil first flows from the inside to the outside through coalescer filter element, which is made of special glass fiber and other synthetic materials and is specially prepared for oil dehydration. It has good hydrophilicity. Coalescing filtration core has the dual function of filtering particulate pollutants and coalescing water.

The innermost high-precision filter material first filters out the particulate pollutants in the oil. The outside demulsification coalesce to form droplets in the oil. The larger ones will settle to the sink by their own gravity, while the smaller ones will be carried along by oil before settling.

The separation filter is made of specially treated stainless steel mesh, which has good hydrophobicity. When the oil flows through the separation filter core from the outside, the small water droplets are effectively intercepted outside the filter core, only allowing the oil to pass through, not allowing the water to pass through, thus further separating the water.

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The main factors of the oil filter piping system

 

1. The pressure

2. The temperature

3. Type of fluid medium

A) fluid

B) Gas: for example, steam or air

C) Content of impurities or abrasives (aggressive substances)

D) corrosive

4. Medium flow

A) Open-close adjustment

B) Need to prevent backflow or backflow

C) Focus on pressure drop

D) the velocity

5. Work environment

A) condensation

B) Operating frequency

C) Accessibility

D) External dimensions/applicable space

E) Manual or automatic control

F) Bubble-free closing performance is required

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Technical upgrade and performance analysis of oil filter

1. Performance introduction of each type of oil filter;

I. YJL Assembled automatic backwash filter device -- Turbine turbine oil Purpose:

This product is suitable for steam turbine oil system, can be in series on the lube oil supply unit mother tube, with synchronous operation, the product by enclosure, pipeline, instrument panel and ZCL - type I, automatic backwash filter elements, high filtration precision, large oil capacity, low pressure loss, safe and reliable, easy installation and maintenance workload small, etc. This device can effectively control the cleanliness of oil, improve the safety and reliability of unit operation, and greatly shorten the oil cycle time during maintenance. This product has been widely used in the oil system of 50 ~ 600MW units.

Ii. Vacuum Use of turbine Oil:
TY - Q series turbine oil vacuum filter oil machine, widely used in electric power, chemical industry, paper making, petroleum, metallurgy, etc., turbine oil purification treatment of unqualified, the machine set precision filter, vacuum drying, coalescence separation, three-dimensional spiral atomization technology at an organic whole, make have mixes up, water cut, aging, acid, much bubble is inferior product, serious turbid turbine oil emulsion was treated after become clear and transparent, reached the standard of new oil. It is an ideal equipment for purifying turbo oil on line to ensure the service life of turbo oil.

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Oil filter needs to enter the era of independent research and development

At present, the oil filter machine industry has been in the traditional mode to develop, but now with the change of the social development, is the modern science and technology innovation, to meet customer demand, the main research and development since the business instead of blindly introduction and imitation of traditional mode, to make the filter oil machine industry and market of our country healthy development, and catch up with the world's advanced level as soon as possible.

Attach importance to independent RESEARCH and development

From the perspective of the existing technology level, China's oil filter industry started relatively late, without good processing technology and supporting industry support, so it has been following the way of copying foreign advanced equipment, lack of independent innovation, many domestic enterprises production equipment or use foreign relatively backward technology. In the same conditions of use, although they can meet the normal production needs, but in the precision, quality and stability of the equipment with foreign equipment or there is a significant gap.

At the same time, due to the lack of adequate attention and investment in research and development and innovation, domestic enterprises are still unable to produce oil filter equipment with a higher degree of automation, and cannot catch up with the innovation progress of foreign manufacturers. Of course, China's oil filter industry also has many advantages:

1. The design idea is flexible and not rigid as in foreign countries. It can be designed closely according to the special needs of different users;

2. Having a close space distance with domestic customers, I can use a variety of channels to understand the problems of equipment in actual production, solve them timely, and apply this experience to the research, development and manufacturing of new equipment;

3. The manufacturing and commissioning cycle of the equipment is shorter than that of foreign countries, and it is characterized by low cost and sufficient maintenance resources.

According to the above advantages, China's oil filter industry should make full use of advantages and avoid disadvantages, on the basis of not abandoning the introduction and absorption, fully attach importance to equipment research and development and innovation investment, with more perfect product series, more intimate design, more adequate supporting and more refined manufacturing, to impress domestic and international customers.

Manufacturing must keep improving

From the perspective of equipment manufacturing, the processing and manufacturing precision of China's oil filter is not high, and its appearance design is not beautiful enough. This is manifested in two aspects: on the one hand, the processing precision of the equipment is not enough; on the other hand, the processing technology and level are uneven.

Humanized design

From the perspective of the use of equipment analysis, domestic oil filter equipment in the humanized design, automatic control easy to operate degree are still some deficiencies, which reflects the domestic oil filter industry to the user feedback collection and equipment adjustment degree is not in place.

China's oil filter industry only fully consider the user's feelings, carefully designed more humane, more in line with the user needs of the equipment to occupy the domestic and foreign user market, improve the level and status of the industry.

China's oil filter industry has a broad space for learning, in the current industry is facing a new round of structural adjustment, technology upgrading, the important moment of product upgrade, domestic enterprises need through independent innovation, in-depth digestion, with a pragmatic attitude to develop enterprises and enhance competitiveness, in order to become a giant oil filter industry.

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How does the filter remove foam in lubricating oil?

The self-excited vibration defoaming technology of vacuum oil filter is widely used in the high vacuum oil filter system. The self-excited vibration defoaming system of high vacuum oil filter consists of spray device, atomizer device, self-excited vibration defoaming device, reaction tower, separation tower, separation chamber, separation screen tower, extraction chamber and polytank.

Vacuum separation kettle, belonging to the vacuum filters oil machine to separate the key technology, it includes vacuum separation kettle tank, the vacuum separation tank top of the tank has inlet, port, oil outlet on the bottom and check valve, vacuum separation tank top of tank is equipped with corresponding to the inlet of the atomizing chamber, down at the bottom of the atomizing chamber is equipped with a number of jet nozzle, the nozzle below a separation tower, the bottom through elastic connection piece from vacuum kettle tank wall elastic connection, the separation tower built-in separation net.

The self-excited vibration defoaming system of the new high vacuum oil filter makes the degassing efficiency high and the gas-liquid separation fast through the self-excited vibration defoaming technology. The vacuum oil filter adopts the self-excited vibration defoaming technology and the measured value of the time-working electronic vacuum gauge is -70Pa without foam rising in the vacuum tank.

The core technology of vacuum oil filter

(1) The self-excited vibration defoaming system of the new type of vacuum oil filter: ≤-70Pa test: no foam rising phenomenon occurs when it runs for 168 hours continuously.

(2) Working vacuum degree: ≤-70Pa long time oil filter work never use intake to reduce the vacuum or manual valve to destroy the vacuum degree to eliminate the foam in the vacuum reaction kettle, to achieve the purpose of not running oil.

(3) Ultimate vacuum: ≤-10Pa

(4) the vacuum filters oil machine work requirements: - 70 pa pa - 133 or less work long time filter oil vacuum reaction kettle will not rise in a bubble, adopt unique self-excited vibration defoaming system technology to ensure filter oil machine in high vacuum is not running at the same time the work of oil phenomenon occurs, and the vacuum reaction kettle bubbles rise will never allow into the way of reducing atmospheric vacuum is used to achieve the goal of bubble elimination.

(5) as the name suggests, vacuum oil filter machine is vacuum, the higher the vacuum dehydrate, gas drying is faster, on the contrary, oil filter energy saving, oil filter speed.

● What are the backward vacuum oil filter defoaming methods?

Now orders, market low low backward way of vacuum oil filter vendors would defoaming, usually adopts the infrared defoaming device, close to switches, capacitive switch, oil bubble sensors to achieve lower vacuum bubble elimination, actual open the electromagnetic valve inlet is given through switch signal to reduce vacuum bubble elimination, in particularly low end of the filter oil machine is widely used. However, in the process of defoaming, the vacuum degree will be reduced, which is time-consuming, labor-consuming and power-consuming, which is neither energy saving nor environmental protection. Therefore, the effect of oil purification cannot be achieved in a short time.

The backward defoaming methods mentioned above; At present, many customers encounter the vacuum oil filter by the vacuum pump oil out of the problem at hand, commonly known as the phenomenon of vacuum oil bubble. Vacuum self - excited vibration defoaming technology can prevent this kind of thing.

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Performance characteristics and applications of plug valves

Plug valve performance characteristics

◆ Excellent high and low temperature performance, good pressure resistance, do not cure, do not dissolve, do not disperse

Excellent sealing, adhesion and lubricity, very low volatile loss

◆ Excellent water resistance, electrical insulation and chemical stability, non-toxic, tasteless, ozone resistance, weathering resistance

◆ Material adaptability, wide range of temperature, applicable temperature range: -40~+200℃

Plug valves are recommended for use

◆ It is often used for lubrication and sealing of various faucets, water meters, valves (ceramic water valves and plug valves), sanitary equipment and diving supplies

◆ It is suitable for plastic and rubber parts such as toys, electrical appliances and "O" type sealing ring, etc. It can play lubrication, waterproof and sealing function for a long time and stably

◆ Suitable for electrical and electronic insulation, semiconductor sealing, electrical insulator waterproof, anti-conductive, anti-flash pollution, prevent moisture into the high-voltage electronic connection system and electrical equipment, prevent corona release and eliminate arc, can also be used for stripping, waterproof, damping, shockproof, anti-oxidation, etc.

◆ Suitable for sealing and lubrication between plastic and plastic, plastic and metal, metal and metal

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The filtering mode of the oil filter

Filtration process: the porous permeable medium is used to filter out the insoluble substance in the oil solution to separate solid particles > 1 m. The paper fiber can absorb a small amount of water.
Electrostatic process: the electrostatic field force is used to make the non-soluble pollutants in the oil adsorbed on the dust collector in the electrostatic field to separate solid particles, sludge and < 1 m "soft particles".
Magnetic process: Separation of ferromagnetic particles by magnetic field force to absorb the ferromagnetic particles in the oil character.
Centrifugal oil filter:
By means of mechanical energy, the oil can move in a circular motion, and the radial acceleration generated can be used to separate larger solid particles, free water and a small amount of emulsified water from insoluble substances with different oil density.
Coalescing oil filter:
A mixture of two insoluble liquids is used to separate free water and a small amount of emulsified water based on the difference in the wetting (or affinity) of the two liquids to a multi-pore medium.
Vacuum oil filter:
By using the difference of saturated vapor pressure under negative pressure, the moisture and air in various forms in oil can be separated from other liquids or gases.
Adsorption: Separation of solid particles, free water and emulsified water from soluble and insoluble substances in oil by molecular adhesion.
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What role can mobile oil filter trolley play

People who do not know about mobile oil filter cars account for the majority. Only those who are involved in related fields will frequently come into contact with this type of oil filter cars and explore their full functions. Where there is a mobile oil filter car worthy of being included in the alternative category, is often lingering in the mind of prospective customers, around their purchase ideas and direction, experienced customers know how to carry out the screening work. It is advisable to first explore the role of this kind of oil filter car, so as to clarify their own cognitive system.
1, in time to filter out the harmful impurities included in the oil
The industry's better mobile oil filter car in the role of the play is quite a set, the reason is that manufacturers as early as in the beginning of the production of the reinforcement of the main performance of the components equipped. This not only makes the mobile oil filter car has a stronger effect, but also can make the car in a short time to filter out the unfavorable impurities in the oil product, prevent the oil product in the input process blocking device.
2. Take reasonable measures to reduce free air in oil products
Mobile oil filter vehicles can play a role in the removal of free air, this is particularly critical, after all, it is difficult to rely on manpower to free the air in the oil products. The mobile oil filter car takes special measures to complete this complex process, and the user does not have to worry about this problem, as long as the relevant buttons are set before turning on the device.
3. The original color of oil products will not be destroyed during the filtration process
Mobile oil filter car can also play a role in the maintenance of oil color, must not underestimate this point, if in the actual filtering process damaged the appearance of oil, the subsequent use will cause a lot of inconvenience. Sometimes when the urgently needed oil is too cloudy, the mobile oil filter car can also help restore the color of the oil in a short time.
Those who plan to purchase the mobile oil filter trolley in batches should reserve some time to do a good job in the preliminary exploration and understanding, so as to ensure the cognition of the mobile oil filter trolley is comprehensive and in place. There are many organizations in the market that take this device as the core of sales. It is difficult to draw a relevant conclusion without a detailed comparison among purchasers of small white grade.
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