Water Ring Vacuum Pump in Paper Industry

Today, Xiaobian talks about the application of water ring vacuum pump in papermaking industry and the problems that arise. In the process of pulping and papermaking, vacuum dewatering is used in many processes. There are vacuum suction chamber of mesh part, volt roll, vacuum suction roll, vacuum pressing part and vacuum suction chamber of upper and lower wool cloth, etc. Vacuum pumping capacity of water ring vacuum pump is a common method for vacuum dewatering of pulp and paper making.

There are three indexes to judge whether the selection of water ring vacuum pump in a pulp and paper vacuum system is reasonable: the pumping capacity, the power of the working point shaft and the matching power of the motor. When selecting the type, on the premise that the pumping power meets the technological requirements of the production line, the working point shaft power of the water-ring vacuum pump should be reduced as much as possible, because the smaller the shaft power consumed by the water-ring vacuum pump, the lower the cost of pulping and papermaking. The matching power of motor is smaller, the total installed capacity is smaller, and the cost of electrical configuration can also be reduced.

Generally speaking, a paper production line with a fixed annual output requires a certain amount of air extraction. For paper mills, in order to reduce energy consumption, save energy, and reduce paper production costs, the correctness of water ring vacuum pump selection is very critical and very important.

To illustrate this problem, we first understand the working characteristics of water ring vacuum pump. Water ring vacuum pump is a volumetric pump. When the type of water ring vacuum pump is determined, its volume is also determined. For water ring vacuum pump, there are two main factors affecting its pumping capacity: the volume of pump and the speed of pump operation.

Rotary-vane-vacuum-pump-for-vacuum-coating-equipment

How-to-select-high-quality-dry-screw-vacuum-pump

Vacuum-Conveyor-Unit-for-Pharmaceutical-Production

How does Roots vacuum pump replenish water?

If the supplementary water quantity of Roots vacuum unit is less, the heat of compression in Roots vacuum pump unit can not be exhausted sufficiently, so that the temperature of water ring and upper gas rises and the gas volume and vacuum degree decrease; if the water quantity is too small, the loss of water ring can not be supplemented, which not only further reduces the performance, but also stops working because the water ring can not be formed. In order to improve the working efficiency of Roots vacuum pump unit, it is necessary to make up water properly, not too much or too little, so as to ensure the good operation of the equipment. If you encounter this situation, you can refer to the above introduction to operate, or consult the manufacturer to consult their technical staff.

The ash content in the burden of vacuum induction furnace is relatively large, which will volatilize in the process of vacuum pumping and smelting, and the time of air pumping will inevitably be prolonged. In order to compensate for the prolongation of pumping time caused by the small pumping speed of oil ring pump, it is necessary to start Roots pump in the unit as soon as possible. It is necessary to increase the inlet pressure of Roots pump in oil ring unit, a small part of which is adsorbed by the furnace wall, and most of which are discharged into the oil tank of sliding valve pump. Without considering the influence of the difference of volume utilization coefficient between two-blade circular arc cycloid rotor and three-blade circular arc cycloid rotor, the two-blade rotor and three-blade rotor will pollute the oil of the pump under the same central distance and outer diameter of the circular arc. Over time, the pump oil becomes muddy. Because the gap between the pump body and the rotor is very small, the mechanical impurities enter the pump chamber to condense into small blocks, so that the rotor is scratched, forming a through annular groove, thus reducing the ultimate vacuum of the slide valve pump.

Why does Roots water ring vacuum unit need to make up water? What is the purpose of making up water for Roots water ring vacuum unit? Supplementary water for Roots vacuum pump unit can effectively work on gas and improve efficiency. Supplementary water should enter at the highest point of compression chamber at the end of liquid work on gas, so that the unit can obtain sufficient energy, when the next cycle turns around. We can start again.

Liquid-Ring-Vacuum-Pump-used-in-paper-mill-industrial

Roots-Liquid-Ring-Pump-System

Sliding-Valve-Vacuum-Pump-for-Pneumatic-Conveying

How to use dry screw pump?

1. Screw pumps are strictly prohibited to operate empty in the absence of liquid in the pump chamber. It is necessary to inject liquid into the pump body by the inlet of the pump before starting, and then start the screw pump, so as to avoid idling and wearing the stator of the screw pump.

2. Before starting the screw pump, the direction of operation of the screw pump must be determined. The screw pump can not be reversed.

3. When the screw pump is newly installed or shut down for a few days, it can not start immediately. It should also inject proper amount of lubricant or liquid transported by the screw pump into the pump body, and then use pipe pliers to pull the screw pump several turns before starting.

4. When stainless steel screw pump transports high-viscosity liquid or corrosive medium, it should flush the cavity of screw pump with clean water or solvent to prevent blockage so as not to cause difficulty in starting screw pump next time and damage the stator.

5. When using single screw pump in winter, the volume fluid of the pump should be excluded when the temperature is too low to be used, so as to prevent the freezing crack of the pump body or the stator from being pulled out when the pump freezes next time it starts.

6. Lubricating oil should be added regularly in the bearing box during use. When seepage is found at the end of the shaft, oil seals should be handled or replaced in time.

7. If abnormal conditions occur in operation, the pump should be stopped immediately to check the causes and troubleshoot.

2BV-Series-Explosion-Proof-Water-Ring-Vacuum-Pump

Belt-Driven-Rotary-Vacuum-Pumps

rotary-vane-vacuum-pump-for-heavy-fuel-oil

rotary vane vacuum pump of Understanding

Rotary vane vacuum pump is a kind of varactor mechanical vacuum pump, which utilizes the rotating motion of the rotor and the vane sliding in the rotor slot to obtain vacuum. When the working fluid is used to lubricate and fill the dead gap of the pump chamber, separating the exhaust valve from the atmosphere, it is commonly known as the oil-sealed rotary vane vacuum pump. Rotary vane vacuum pump is called direct vane vacuum pump, which directly connects the pump to the motor or to the coupling. In each pump, there are single-stage and double-stage. Rotary vane vacuum pump, how much do you know?

In single-stage pumps, the limit pressure and use of pumps are different due to the different structure and parameters. Rotary vane vacuum pump has been widely used and continuously improved. In the aspect of pump structure, in order to prevent oil return during shutdown, some have check valves that can automatically cut off the oil circuit, some have cut-off valves of intake passage, and some have oil pumps and control structures that can automatically cut off the air circuit when the pump opening ballast suddenly shuts down to keep the pump mouth in a vacuum state.

In terms of accessories, there are population filters, dust filters, steam condensation traps and chemical traps for mist eliminators, odor filters, blocking broken glass and other sundries. There are temperature control valves to control pump temperature to improve steam extraction rate and protect pump temperature control water volume. Speaking of rotary vane vacuum pump, in fact, it is very familiar to many people, probably because of its variety and wide distribution. Rotary vane vacuum pump, vacuum pump usually has dry screw vacuum pump.

Water ring vacuum pump, reciprocating vacuum pump, rotary vane vacuum pump and other types. With the development of science and technology, the use of vacuum pump is more and more extensive. Rotary vane vacuum pump uses eccentric rotor to drive vanes, and the volume of different chambers in the pump changes, so that the internal pressure changes. Rotary vane vacuum pump. At present, it is the most widely used vacuum pump, among which the role of vacuum pump oil, another working part product of rotary vane vacuum pump, is also very important. If the quality of rotary vane vacuum pump oil is poor or mixed with impurities, it will scratch and corrode the internal part of the pump with the flow, while the vacuum pump.

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Oilless-Vacuum-Pump-in-Water-Purification-Treatment

Vacuum-System-Compound-Process-for-Sewage-Treatment

Dry-Screw-Vacuum-Pump-Generating-Power-in-Waste-Heat

Can rotary vane vacuum pump use oil?

Some users of rotary vane vacuum pumps use ordinary oil instead of special oil for vacuum pumps in order to save costs. In fact, this not only increases the cost of use and maintenance of vacuum pumps, but also seriously affects the service life of vacuum pumps. This chapter mainly describes why rotary vane vacuum pumps choose special oil for vacuum pumps.

1. The special oil for vacuum pump has a certain viscosity. The high or low viscosity determines the sealing performance of the vacuum pump. The low viscosity makes the sealing performance worse. If the viscosity is too high, the friction between the blade and the cylinder body will be increased, and the lubrication will become worse. At the same time, the rotation of the rotor will become difficult, the pressure of the motor will become higher and higher, and the oil temperature will become higher and higher. The increase of oil temperature will accelerate the emulsification degree of pump oil, which will affect the vacuum degree. Can rotary vane vacuum pump use oil?

2. The chemical properties of the special oil for vacuum pumps tend to be more stable, and the contents of water, water-soluble acid, insoluble alkali and other impurities are much smaller. The use of the special oil can effectively avoid the problem of replacing the vacuum pump oil many times and ensuring the cleanliness of the pump.

3. The saturated vapor pressure of the special oil for vacuum pumps should be low, and the volatile lightweight neptunium should be less. If ordinary vacuum pump oil or engine oil is easy to volatilize, the use of non-vacuum pump oil is facing the situation of frequent refueling.

From the above points, it can be seen that the use of regular vacuum pump oil can effectively prevent the emulsification, carbonization of pump oil and other adverse factors to the vacuum pump, fundamentally solve the difficulty of maintenance of the vacuum pump, improve the service life of the vacuum pump.

Gas-Liquid-Ring-Vacuum-Pump

Oil-Sealed-Piston-Rotary-Industrial-Vacuum-Pumps

Samll-Volume-Rotary-Vane-Vacuum-Pump

How to choose the right vacuum pump for vacuum packaging machine?

At present, many customers are confused about the selection of vacuum pumps while choosing and purchasing vacuum packaging. What kind of vacuum pumps are commonly used in vacuum packaging machines?

Vacuum pump is the core part of the vacuum packaging machine and the center of the vacuum packaging machine. It has great influence on the packaging effect, service life and failure rate during the use of the vacuum packaging machine. How to choose the right vacuum pump for vacuum packaging machine?

Domestic vacuum pumps generally refer to the production of vacuum pumps by wholly-owned enterprises in China. The main characteristics are low price and general quality. It is easy to have the shortcomings of low vacuum effect and unstable performance in the use process. But the general small vacuum packer can use domestic vacuum pump. Because the vacuum chamber of the small vacuum packer is small and the vacuum effect can achieve the vacuum effect in a small space and time range, it is no problem to use the general vacuum pump.

If the user chooses to buy vacuum packaging machine as medium or large vacuum packaging machine, then Xiaobian suggests to use joint venture vacuum pump or import vacuum pump. After all, as the equipment needed for production, the performance, service life and failure rate of vacuum packaging machine can be directly reflected in the process of production needs. Moreover, domestic vacuum pump is more suitable for small batch production in large quantities. It is not recommended to use in batch production. How to choose the right vacuum pump for vacuum packaging machine?

Joint Venture Vacuum Pump refers to the joint venture production between China and foreign countries. Generally speaking, it is produced by foreign technology at home. This kind of pump is suitable for customers with medium packing capacity and packing efficiency. Because this series of vacuum pumps only have foreign technology and do not have foreign vacuum pump material and processing equipment, the vacuum pump can not meet the more precise technical requirements in the production process. This kind of pump is used in the production of vacuum pumps. Medium vacuum packaging is more suitable.

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Factory-Direct-Roots-Vacuum-Pumps-for-Transformer

Horizontal-Mining-Liquid-Ring-Vacuum-Pump

What kind of vacuum pump is good for vacuum coating?

Vacuum coating technology is a new technology of material synthesis and processing. Vacuum coating equipment is an important part of coating industry. In the words of a vacuum coating entrepreneur, vacuum coating surface technology is to make "beauty" for customers'products - more colorful and beautiful appearance. Vacuum coating technology has been widely used in metal cutting tools such as decorations, cutting tools, dies, optical instruments, integrated circuit manufacturing, solar energy utilization, flat panel display, building glass and automobile glass, anti-counterfeiting technology, aircraft protective coating, information storage field, sensors and so on.

Vacuum pumps commonly used for vacuum coating are as follows:

I. Vacuum Coating Rotary Vacuum Pump

The selected rotary vane vacuum pump in vacuum coating is mainly composed of pump body (stator) and rotor. There are more than two rotary blades in the rotor slot, and springs are also installed between the rotary blades of some pumps. The rotor is eccentrically mounted in the pump chamber, and the gap between the outer edge and the top surface of the pump chamber is 2-3 microns. When the rotor rotates, under the action of centrifugal force, the vane slides back and forth along the groove and keeps contact with the inner wall of the pump chamber, dividing the pump chamber into two or several variable volume workshops. When the rotor rotates clockwise, the volume of the suction chamber connected with the suction port increases gradually from zero, the pressure of the gas in the chamber decreases, and the exhausted gas is continuously inhaled from the suction port. At the same time, the volume of the exhaust chamber connected with the exhaust port decreases from large to small, and the gas in the inhalation chamber is compressed. When the gas pressure is higher than the atmospheric pressure, the exhaust valve is pushed to discharge the atmosphere. When the rotor rotates continuously, the pump pumps continuously.

II. Roots Vacuum Pump with Vacuum Coating

The limit vacuum of Roots pump in vacuum coating depends not only on the structure and manufacturing accuracy of the pump itself, but also on the limit vacuum of the front pump. In order to improve the vacuum limit of the pump, Roots pump can be used in series. The working principle of Roots pump is similar to Roots blower. Because of the continuous rotation of the rotor, the exhausted gas is sucked into the space between the rotor and the pump shell from the intake port, and then discharged through the exhaust port. Since the space of V0 is completely closed after suction, there is no compression and expansion of gas in the pump chamber. But when the top of the rotor rotates around the edge of the exhaust port and the space of V0 is connected with the exhaust side, because the pressure of the exhaust side is high, some of the gas rushes back into the space of v0, which makes the pressure of the gas increase suddenly. When the rotor continues to rotate, the gas is discharged out of the pump. Roots pump in the pump chamber, there are two "8" shaped rotors installed vertically on a pair of parallel axles, driven by a pair of gears with transmission ratio of 1 to each other reverse synchronous rotation. There is a certain gap between the rotor and the inner wall of the pump housing, which can realize high speed operation.

3. Vacuum Coating Water Ring Vacuum Pump

When the impeller rotates clockwise in the direction indicated, the water is thrown around the impeller. Because of the centrifugal force, the water forms a closed ring which is approximately equal in thickness depending on the shape of the pump chamber. The inner surface of the upper part of the water ring is just tangent to the hub of the impeller, and the inner surface of the lower part of the water ring is just in contact with the top of the blade (in fact, the blade has a certain insertion depth in the water ring). At this time, a crescent-shaped space is formed between the hub and the water ring of the impeller, which is divided into several small cavities with equal number of blades by the impeller. If the starting point is 0 degrees above the impeller, the volume of the small chamber increases from small to large at 180 degrees before the impeller rotates, and is connected with the suction port on the end surface. At this time, the gas is absorbed, and at the end of the suction, the small chamber is isolated from the suction port; when the impeller continues to rotate, the small chamber becomes smaller and compresses the gas; when the small chamber is connected with the exhaust port, the gas is discharged out of the pump.

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Rotary-vane-vacuum-pump-in-compressed-air

Vacuum-system-in-white-water-degassing-system

Maintenance of Vacuum System in Freeze Drying

Freeze dryer (freeze dryer) consists of refrigeration system, vacuum system, heating system and electrical instrument control system. The main components are drying box, condenser, refrigeration unit, vacuum pump, heating/cooling device, etc. In the 21st century, vacuum freeze-drying technology has attracted more and more attention because of its incomparable advantages compared with other drying methods. In addition to its wide application in the fields of medicine, biological products, food, blood products and active substances, its application scale and field are expanding.

The vacuum system is mainly composed of vacuum pump, front box, back box, valve on box body, mushroom valve, small butterfly valve, vacuum silicon tube and so on.

1. Regular replacement of vacuum pump oil to ensure the performance of the vacuum pump.

The performance of the vacuum pump decreases and the vacuum pump oil is polluted. If it is found that oil level drops and oil emulsifies, the quantity of oil should be increased or the vacuum pump oil should be replaced immediately, and the cause of pollution should be ascertained. If the vacuum pump sucks a small amount of water, the air ballast valve can be opened for 0.5-1 h to observe whether the appearance of the vacuum pump oil is improved and whether the vacuum degree continues to decrease. If the vacuum pump oil is replaced many times, the vacuum pump oil is obviously improved. The vacuum pump needs to be repaired.

2. Before starting the vacuum pump, check whether the oil level is normal (about 1/2 of the oil mirror position).

3. Make sure that the back chamber is dry before vacuum pumping. Avoid pumping water vapor into the pump body and affect the pumping efficiency of the vacuum pump.

The air tightness of the system decreases and leaks occur. Find the leak point, after finding the leak point, repair the leak, replace the sealing ring or replace the valve.

Vacuum freeze-drying industry in the drying subdivision industry has made great progress in the past decade. Life science research: antibody, protein, tissue, microbial research, so vacuum freeze-drying has been widely used in the field of biopharmaceuticals. Vacuum freeze-drying is widely used in pharmaceutical industry to prepare vaccines and antibiotics. In the field of health products, a large number of freeze-dried health products have been active in the health products market, such as freeze-dried cordyceps, freeze-dried sea cucumbers, freeze-dried antler, freeze-dried Dendrobium and so on.

Manufacture-Suppky-Single-Stage-Rotary-Vacuum-Pump

Medium-Pressure-Vacuum-Piston-Pump

Dry-Rotary-Vane-Vacuum-Pump-for-CNC-Wood-Machine

thread-connecting-industry-factory-using-liquid-ring-vacuum-pump

Exhaust Pressure of Water Ring Vacuum Pump

Water ring vacuum pump is used to extract vacuum equipment, in order to form the required vacuum, the equipment will continue to discharge air out of the pump in the process of work, so it will form a certain exhaust pressure. So, what is the exhaust pressure of the water ring pump? How does it affect the water ring pump?

Exhaust pressure will have a significant impact on suction and shaft power consumption of water ring vacuum pump. When the water ring pump system is running, if the exhaust pressure is larger, the suction volume of the vacuum pump will be smaller and the power consumption of the corresponding shaft will be larger. On the contrary, when the exhaust pressure of the system is small, the suction volume of the vacuum pump will be larger and the power consumption of the corresponding shaft will be smaller.

Therefore, in the actual operation and maintenance process, we should observe the exhaust pressure data of water ring vacuum pump in time. When abnormal exhaust pressure data occur, we should take appropriate measures to update the whole vacuum system immediately, so that the exhaust pressure of vacuum system can keep the range recommended by the national standard or manufacturer, and ensure the vacuum pump. Always in an ideal working state, effectively improve the overall mechanical efficiency of water ring vacuum pump.

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Oil-free-screw-vacuum-pump-in-spraying-industry

Vacuum-negative-pressure-station-in-sugar-factory

Superior Performance of Oilless Screw Vacuum Pump

Oil-free screw vacuum pump is also a kind of dry pump, its excellent performance has been the consensus of the majority of users, this kind of environmentally friendly product has become the main trend of today's society. In order to achieve the popularization of screw pump faster, domestic manufacturers have accelerated the development and manufacture of screw pump, its superiority has reflected the development trend of this product. It will certainly become a popular product in the domestic industry, and its application will not be lower than the current vacuum pump products.

And the advantages of oil-free screw vacuum pump can be said to be beyond the reach of other products, first of all, the protection of water resources, the pump does not exist the concept of using water, this basic condition to a large extent saves the use of water energy, which is a relatively broad definition of area, and the other performance is to play a considerable role in the environmental protection of enterprises, the meaning of green products. Knowledge has penetrated into every enterprise, which is a necessity of historical development and a concept of product diversification.

The formation of oil-free screw vacuum pump promotes the development of vacuum pump products, at the same time, it strengthens the awareness of environmental protection, leads the whole vacuum field to another development trend, increases the redefinition of products in the market, and also opens up the promotion of development among enterprises, which is conducive to close links between products and enterprises.

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High-Quality-Water-Ring-Vacuum-Pump-Manufactor

Lab-Double-Stage-Rotary-Vane-Vacuum-Pumps

Development Practicability of Dry Vacuum Pump

In order to enhance the performance of dry vacuum pump products, combined with the exertion of its value and practicability, highlight the continuous improvement of its practical advantages, improve its quality and practicability with high-efficiency product production strength, from the application of equipment to the promotion of the actual product development ability, so as to accelerate its application in the process of reliable productivity development. The improvement of product performance and application strength further enhances the overall improvement of product practical value and highlights the development strength of product performance.

Through the improvement of the product strength of dry vacuum pump, the embodiment of the practical performance of its products is constantly accelerated, the overall driving force of its actual superiority level is enhanced by the comprehensive application of products, and the promotion of its actual ability is accelerated. Under the driving force of the overall application of the advantages of expanding the practical effect of products, the product strength of the equipment is brought into play, and the enhancement of the high-efficiency superiority of the equipment is accelerated. Quickly develop its quality and practical advantages, and enhance the practical ability of equipment.

In the process of speeding up the application of dry vacuum pump quality development, it is necessary to speed up the development of its application strength with high-efficiency product performance, fully enhance the upgrading of equipment application ability, enhance the development of its value application strength with high-quality product strength, and expand the pioneering advantages of its actual product development ability.

Oil-free-screw-vacuum-pump-in-vacuum-recovery

Water-Ring-Vacuum-Pump-Pumping-Technology

Material-for-Manufacturing-Water-Ring-Vacuum-Pump

Refrigeration and drying of liquid ring vacuum pump

With the continuous acceleration of economic development, the application of liquid ring vacuum pump in production and life has become more and more widespread, from being initially used as self-suction pump, and gradually developed to be used in many industrial sectors such as petroleum, machinery, chemical industry, mining, medicine, light industry and food. Here we mainly talk about the application of water ring vacuum pump in refrigeration and drying.

Speaking of freeze-drying, you may first think of food, such as condiments, fruits, of course, there are seafood freezing, this technology is basically to use the special advantages of water ring vacuum pump, change the characteristics of food itself, after vacuum drying to retain the nutrition of food, in order to facilitate transportation and other forms of market sales.

Because in a long time, for food, especially seafood processing, most of the manual operation, but also depends on the seasonal changes, the efficiency is very low, but the use of water ring vacuum pump technology, not only the production efficiency has increased many times, but also the quality of production has been guaranteed.

This freeze-drying technology of water ring vacuum pump is not only applied to food processing, but also to some vaccines and medicines produced by pharmaceutical factories. It is also used to preserve organisms in the medical industry, which achieves very good results and has become a more practical vacuum equipment in recent years. This process is to freeze the material before vacuum, when the material has been frozen into ice water sublimation after removal, so the freeze-dried material will remain in its original state. This technology has been developed in China for decades, and its design is quite mature, which has made great contributions to many industries.

In fact, the application of water ring vacuum pump in refrigeration and drying is very extensive. It has been applied in all walks of life and has a very broad prospect.

Blower-Vacuum-Pump-for-Food-and-Beverage

Industrial-Single-Stage-Rotary-Vane-High-Vacuum-Pump

Stainless-Steel-Food-Single-Stage-vacuum-Pump

Water-Ring-Vacuum-Pump-with-Cast-Iron-Materials

single stage rotary vane vacuum pump characteristics

Single-stage rotary vane vacuum pump oil-free (corrosion-resistant) vertical reciprocating vacuum pump is a replacement product of horizontal vacuum pump, and is the main equipment to obtain rough vacuum. The complete isolation of crankcase and cylinder is realized by using full sealing device, and advanced oil-free lubrication is realized by using self-lubricating material for piston rings. Because there is no sewage discharge, the vacuum pump is especially suitable for vacuum distillation, vacuum evaporation, vacuum drying, vacuum concentration and vacuum impregnation in chemical, pharmaceutical and food industries.

When running, driven by the motor, the piston in the cylinder moves to and fro through the action of crank-connecting rod mechanism (rotating motion into linear motion). When the piston moves from the left end to the right end in the cylinder, the pressure in the left chamber space decreases continuously as the volume of the left chamber of the cylinder increases. When the pressure in the left chamber space is lower than that in the pumped container, according to the principle of gas pressure balance, the gas in the pumped container is continuously pumped into the left chamber through the suction valve 5, which is in the process of suction. When the piston reaches its rightmost position, the left chamber of the cylinder is filled with gas. Then the piston moves from the right to the left, and the suction valve 5 closes automatically. Gas is gradually compressed as the piston moves from right to left. When the gas in the cylinder reaches the exhaust pressure, the exhaust valve 4 is opened and the gas is discharged, thus completing a working cycle. When the piston moves from the left end to the right end, repeat the above cycle until the pumped container reaches a certain equilibrium pressure.

Roots pump with relief valve is widely used in all aspects of vacuum acquisition. It extends the working range of oil-sealed mechanical vacuum pump under low inlet pressure. It has the characteristics of small volume and large pumping speed. It has large pumping speed in the range of 1-100pa inlet pressure. It is especially suitable for vacuum systems requiring large pumping speed under low inlet pressure, such as power transformer, power capacitor, etc. Vacuum drying, vacuum impregnation, vacuum heat treatment, vacuum smelting exhaust, vacuum coating equipment pre-pumping, large test wind tunnel exhaust and lighting production line exhaust, etc.

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Roots-Vacuum-Pump-Petrochemical-Industry

Liquid-Ring-Vacuum-Pump-for-Electric-Power-Industry

Application Performance of Roots Vacuum Pump

Based on the current overall application ability of Roots vacuum pump, on the basis of fully improving the actual performance of the product, it is necessary to promote the overall application ability of the product by advancing the superiority of the development, enhance its superiority of development, increase the promotion of the basic performance of the product, and provide the effective ability for the overall promotion by the development superiority of the technical performance of the product, and through the higher energy of the product. On the basis of force advantage, we should promote the overall development of Roots pump, promote its superior performance, and do a good job in promoting the application effect of products.

In order to speed up the development of Roots vacuum pump, in the application of its ability in various aspects of the market, it is necessary to gradually improve the application ability of products, increase the beneficial promotion of its product applicability, expand the overall driving force of its functional development, promote the ability of products with strong application advantages, and fully improve the application of basic products as a whole. In effect, through its technical incessant advantageous promotion, it can give full play to the promotion of product application ability.

The performance expansion of Roots vacuum pump has a continuous promotion effect on the overall utilization rate of products. In order to improve the application effect of products, it is necessary to promote all aspects of the application performance of products with greater development advantages, so as to promote the actual application ability of products.

oil-lubricated-screw-air-compressor-for-Jackhammers

single-stage-rotary-vane-vacuum-pumps-for-CNC-Router

Small-Power-Single-Stage-High-Pressure-Ring-Blower

Small vacuum pump

1. Start-up with load.

If a small vacuum pump has a vacuum in its suction port or a pressure in its exhaust port before starting, another technical parameter of the pump should be considered: the maximum start-up load of the intake port and the maximum start-up load of the exhaust port.

2. Medium temperature of small vacuum pump. According to the temperature of the medium gas passing through the pump, choose the ordinary type or the high temperature type.

3. Reliability of small vacuum pumps. According to the severity of the consequences of the failure of the micro-pump, it is completely in accordance with its own requirements. Special attention is paid to the fact that this parameter is measured under full load and uninterrupted operation, which is the worst working condition. If the actual operation is not full load or continuous operation, the value will be higher, depending on the working condition of the pump. This performance is a test of the manufacturer's technical strength. From the appearance of the product, we can see some, such as the use of special motors rather than ordinary low-cost motors, the weight is relatively heavy in the case of comparable volume, and so on. According to the price of the product, we can also know a little.

4. Electromagnetic interference of small vacuum pump. If a small vacuum pump is controlled by a precise circuit, it may be necessary to order a small vacuum pump with low electromagnetic interference, depending on the anti-interference capability of the circuit.

Vacuum-Pump-System-in-Iron-and-Steel-Industry

Vacuum-Pump-Technology-in-Natural-Gas-Treatment

Vacuum-pump-for-filter-equipment

Several Vacuum Pumps in Chemical Industry

1. Several kinds of vacuum pumps commonly used in chemical industry-the common vacuum pumps in chemical industry can be simply divided into variable-volume vacuum pumps and jet vacuum pumps. Variable-volume vacuum pumps are devices that use the periodic change of pump chamber volume to complete suction and exhaust. Reciprocating vacuum pumps, rotary vane vacuum pumps, slide valve vacuum pumps, water ring vacuum pumps and Roots vacuum pumps belong to variable-volume vacuum pumps. Type vacuum pump. Jet vacuum pump is a momentum transfer pump that uses the high-speed jet generated by the pressure drop of Venturi effect to transport gas to the outlet. Water jet vacuum pump, steam jet vacuum pump, steam-water series jet vacuum pump and steam-water combined jet vacuum pump belong to the same kind of jet vacuum pump. 2. Working Principle and Advantages and Disadvantages of Variable Volume Vacuum Pump

(1) Reciprocating vacuum pump, rotary vane vacuum pump, slide valve vacuum pump and Roots vacuum pump inhale, compress and discharge gas by reciprocating motion or rotation of piston. Their advantage is that the vacuum degree of the new pump is relatively high, but the piston is a running part, so the wear of the piston is inevitable. With the increase of maintenance times, the working vacuum degree will continue to decline until it can not meet the production requirements. This kind of pump has the disadvantage of high working noise, high fuel consumption and high failure rate. Generally, it needs to open a spare one, which invisibly increases the cost of equipment investment and operation. In addition, if this kind of pump is used to pump condensable gases such as suction steam, lubricating oil will be emulsified, so it can only be used to suck non-condensable (air) gases, nor can it suck medium with granular shape, which limits its scope of application.

(2) Water ring vacuum pump rotates by an eccentric rotor with multi-blades installed in the pump shell, throwing water into the pump shell to form a water ring concentric with the pump shell, and the water ring and the rotor blades form a volume periodic change, thus inhaling, compressing and discharging gas. It has the advantages of large suction capacity at low vacuum and direct suction of condensable gases such as water vapor. Its shortcomings are low vacuum, inability to suck granular media, high-speed rotation of the rotor is not easy to do anti-corrosion treatment, so it can not suck corrosive media. 3. Working Principle and Advantages and Disadvantages of Jet Vacuum Pump

Jet vacuum pump is a momentum transfer pump that uses the high-speed jet generated by the pressure drop of Venturi effect to transport gas to the outlet. It is divided into water jet vacuum pump, steam jet vacuum pump, steam-water series jet vacuum pump, steam-water combination jet vacuum pump. Jet vacuum pump is widely used in chemical operation because of its wide vacuum range, direct suction of condensable gases such as water vapor and granular media, simple structure, easy operation, small maintenance of non-operating components, energy saving and consumption reduction.

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