Selection of water ring vacuum pump model

Try to select the standard with lower rotation speed. On the premise of reaching the same pumping volume, try to select the pump with lower rotation speed. The larger pump consumes less specific power, that is, higher power. In addition, the larger standard water ring vacuum pump has long blades (that is, long flow channel), small curvature of fluid, approximate straight streamline, and fluid activity is close to slow flow. 

Considering the influence of water temperature, the temperature of most make-up water is between 25 ℃ and 35 ℃. Therefore, when selecting pumps, the air volume should be appropriately increased compared with that in the technical documents. When installing pipelines, a thicker suction pipe should be selected to reduce the loss of resistance, and a right angle elbow should be cut as far as possible to improve the suction work The intention of the rate.

When the exhaust pressure is slightly positive, the influence of the increase of the exhaust pressure and the increase of the backflow in the pump cavity on the pumping volume should be considered. Because the increase of the exhaust pressure will increase the shaft power of the pump and the power of the driving machine, the experimental function curve and the corresponding skill data should be referred to in the selection to fully meet the requirements.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

Closed loop system of liquid ring vacuum pump

It is different from single-stage and double-stage vacuum pumps. It is a single-stage vacuum pump and a double-stage vacuum pump. 

1. Separator pressure gauge: if pressure may be generated in the separator, a pressure gauge shall be installed on the separator;

2. Suction port vacuum check valve: in order to prevent backflow when the vacuum pump / compressor is shut down, it is generally necessary to install a vacuum check valve or pneumatic valve at the inlet of the pump;

3. Working fluid booster pump: if the working fluid supply of the pump is insufficient or the working pipeline resistance is large, the working fluid booster pump can be installed;

4. Air port filter: if foreign matters may enter the pump in the system and pipeline, a filter or filter screen shall be installed at the suction port of the pump;

5. Cavitation protection pipeline: if the suction pressure of the vacuum pump is close to the saturated vapor pressure of the working fluid, a cavitation protection pipeline should be installed between the vacuum pump and the separator;

6. Exhaust condenser: if it is necessary to capture or recover the condensable gas at the exhaust port, a condenser can be installed at the exhaust port of the gas-liquid separator;

7. Liquid replenishing port of separator: if the working fluid is insufficient, the working fluid can be replenished properly from the liquid replenishing port;

8. If the vacuum pump has other special requirements, the corresponding accessories can be installed.


Rotary Vane Vacuum Pump Working Principle

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump 

Radial exhaust water ring vacuum pump

The utility model discloses a radial exhaust water ring vacuum pump with controllable flow, which comprises a pump body, a first base plate, a second base plate and a base, the upper surface of the pump body is provided with a water tank, the interior of the water tank is provided with a blocking block, the first base plate is located at the left end of the pump body, and the interior of the first base plate is interspersed with an air outlet, the second base plate is located at the right end of the pump body, and the connecting block is arranged inside the water tank Springs are evenly distributed on the lower surface of the connecting plate, a cavity is arranged on the right side of the second base plate, a baffle is arranged above the pull ring, an air inlet is connected with the right end of the cavity, and the base is located below the pump body. 

The radial exhaust water ring vacuum pump with controllable flow can control the gas flow by rotating the baffle in the air inlet, and the filter plate can filter out the particles in the gas, so as to avoid the damage of the parts inside the pump body, and the pump body can be well protected by the extension and extension of the outrigger and the protective rod.

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The reason why single stage centrifugal pump can't pump water

Although the single-stage centrifugal pump has a certain degree of self-priming capacity, it is still necessary to ensure that the inlet pipe is completely sealed when it is installed. 

The reason why the centrifugal pump does not pump water may be that the user does not install it correctly. The correct installation and use of centrifugal pump suction pipe should be installed at the bottom of the pool bottom valve. Before starting, the whole pump body and inlet pipe must be filled with water. The outlet valve must be closed before starting, and then the outlet valve shall be opened slowly after opening the centrifugal pump. Each single-stage centrifugal pump has different self-priming performance according to different models. When choosing the model, you must know each single-stage centrifugal pump.

The reason why the single-stage centrifugal pump can not pump water may also be that the self-priming exceeds the effective self-priming height of the centrifugal pump. The self-priming head of conventional single-stage centrifugal pump is within 3M. If the height exceeds this height, self-priming centrifugal pump or high suction self-priming pump with vacuum auxiliary device must be used.

The reason why the single-stage centrifugal pump can not pump water may also be due to the blockage of debris in pump cavity, impeller, bottom valve, pipeline and other places. If the single-stage centrifugal pump is sealed and has leakage, it will also lead to the failure of pumping.


CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump

Volume and application of liquid ring vacuum pump cavity

In the process of using liquid ring vacuum pump, it is a self-priming pump, and its products are gradually adopted by mining, chemical industry, light industry, petroleum and other industries. In the process of industrial production, there are many technological processes, such as vacuum water diversion, vacuum evaporation, vacuum moisture regain and so on. 

Liquid ring vacuum pump can be widely used, mainly because of the rapid development of its application technology. In the process of using the equipment, the gas compression in the water ring pump is isothermal, so it can pump out its explosive and flammable gas, and it can also pump out the gas containing water and dust in the process of using.

When the pump is equipped with a proper amount of impeller, it can be thrown into the water directly in the process of working.

The lower part of the water ring of the liquid ring vacuum pump is just tangent to the impeller, and the inner surface of the upper part of the water ring is just in contact with the top of the blade. At this time, a crescent shaped space will be directly formed between the water ring and the impeller, which is also equivalent to several small cavities.

In the process of using liquid ring vacuum pump, it mainly depends on the change of pump cavity volume to effectively realize the function of exhaust and suction. The structure of the equipment is relatively simple, and its accuracy requirement is not high in the process of production, so it is very easy to process.

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Talk about vacuum pump

Water ring vacuum pump (water ring pump) is a kind of coarse vacuum pump. The limit pressure it can obtain is 2.66-9.31kpa for single-stage pump and 0.133-0.665kpa for double-stage pump. Water ring pump can also be used as compressor, it belongs to low pressure compressor, its pressure range is (1 ~ 2) x105pa gauge pressure (under specific conditions). Water ring pump is widely used in many processes of petroleum, chemical, machinery, mining, light industry, papermaking, power, metallurgy, medicine, food and other industries, municipal and agricultural sectors, such as vacuum filtration, vacuum feeding, vacuum degassing, vacuum evaporation, vacuum concentration and vacuum moisture regain, etc Flammable, explosive gas, in addition to dust, water gas can be pumped, therefore, the application of water ring pump is increasing. 

Water ring pump is composed of impeller, pump body, suction and exhaust disc, water ring formed by water in the inner wall of pump body, suction port, exhaust port, auxiliary exhaust valve, etc.

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Roots vacuum unit used in vacuum metallurgy industry

Roots vacuum unit is widely used in vacuum degassing, vacuum melting, liquid steel vacuum treatment, space simulation, low-density wind tunnel and other devices to extract corrosive gas in vacuum metallurgy industry. It can also be used in distillation, evaporation, drying and other production processes of chemical industry, food, medicine, motor manufacturing and other industries. 

When working, the pumped gas enters between the rotor and the pump body through the air inlet. At this time, a rotor and the pump body separate the gas from the air inlet, and the separated gas is sent to the exhaust port during the continuous rotation of the rotor. Space is in a closed state, therefore, there is no compression and expansion. But when the peak of the rotor turns to the edge of the exhaust port, because the pressure of the V part is lower than that of the exhaust port, in order to make the pressure in the connected volume uniform, the gas will diffuse from the exhaust port to the V area, and the diffusion direction is opposite to the rotation direction of the rotor. When the rotor rotates again, the gas at V is compressed to the exhaust port to discharge it. At this time, the other side of the rotor is connected with the air inlet to inhale the gas. When the rotor rotates continuously, the above air extraction process is repeated to continuously discharge the gas flowing in. This working process is equivalent to that the rotor space increases from a small value to a large value, and then decreases from a large value to a small value. This is the volume principle of Roots vacuum pump.

Vacuum Pump Is Widely Used In Chemical Industry

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump

2BV water ring vacuum pump type determination

To determine the model of 2BV water ring vacuum pump, we should first determine which series of pump to choose according to the process parameters of the device, the physical and chemical properties of the conveying medium and other parameters, combined with the structural characteristics and applicable station of our company's products; then determine the rated flow of 2BV water ring vacuum pump; thirdly, we should also determine its rated head; and then determine the 2BV water ring vacuum pump Rated motor. 

When determining the model of 2BV water ring vacuum pump, you should also check the type spectrum of the selected series of pumps, the corresponding flow and head in which model box. At this time, you can preliminarily determine the selected model. Usually, under different speeds, you may choose one model. For checking the performance curve of the initially selected model, check whether the NPSHr of the pump is consistent Meet the npsha requirements of the unit.

When selecting 2BV water ring vacuum pump, pay attention to check the performance curve and check whether the rated working point of the selected model falls in the high efficiency working area of the pump. The final model of 2BV water ring vacuum pump is determined by comprehensively comparing the efficiency, speed (the lower the speed, the longer the service life) and price of the pump.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump

vacuum pump unit connection mode

When wiring the vacuum pump unit, it should be noted that half of the ring must be pressed with polyester insulating tape, 8-12 layers should be wrapped, and then two layers of plastic tape should be wrapped for strength; when wiring the vacuum pump unit, its cable copper core should be peeled out about 30-35mm long, and the copper wire should be wiped clean with emery cloth to make it bright, and the external connection should also be carried out Strip the copper wire of three core cable 30-35mm and clean it with emery cloth. 

For the wiring of vacuum pump unit, the three core cable and the copper wire stripped from the external cable will be inserted, and then a thin copper wire will be tied tightly according to the drawing, the remaining part will be cut off, and the scissors will be used to press flat to prevent hand binding. When wiring, the three wire ends of vacuum pump should be soldered firmly with solder, and the surface of the welding head should be smooth, without burr and false welding If the welding is firm or not smooth, the vacuum pump should be re welded until it meets the requirements.

For the wiring of vacuum pump unit, three wires must be wrapped together with plastic tape, and two layers shall be wrapped. The layer shall be more than 50 mm above the end of the insulation layer of each wire, and the second layer shall be more than 50 mm above the end of the layer. After wrapping, take a basin of cold water to soak the wrapped wire in water safely. After 12 hours, measure the insulation with a 500V megohmmeter, and the insulation shall not be less than 50 megohm, otherwise it shall be re wrapped until it reaches the required value So far.

Rotary Piston Vacuum Pump Used In Resin Infusion Industry

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump

Repair of corrosion and wear of water ring vacuum pump cavity

The water ring vacuum pump is evenly distributed on all surfaces of the equipment, while the latter only occurs locally. Such as pitting corrosion, crevice corrosion, intergranular corrosion, stress corrosion cracking, corrosion fatigue, hydrogen corrosion cracking, wear corrosion, delamination corrosion, etc. 

It is one of the effective anti-corrosion measures to use polymer composite repair material to carry out the surface organic coating anti-corrosion. Surface adhesion protection can be widely used in repairing and pre protecting the parts of abrasion, cavitation and corrosion. It has good chemical resistance, excellent mechanical properties and adhesive properties. Compared with the traditional pressure vessel welding repair, it has the characteristics of simple construction, low cost, safety performance and good repair effect.

Roots Vacuum Pump In Leakage Refrigeration System

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump

Technical transformation of vacuum device of water ring vacuum pump

Water ring vacuum pump is widely used in condenser vacuum system of power plant because of its simple system, high operation efficiency and strong pumping capacity. This paper describes the technical transformation of water ring vacuum pump for water type vacuum pumping device. The transformation results show that after the generator unit is connected to the grid, the monthly accumulated auxiliary power consumption has decreased significantly, and the on grid power has increased significantly. The transformation has achieved the expected effect. 

Due to the problems of low efficiency, large water consumption, poor hot standby effect, low steam extraction efficiency under high vacuum, large space occupied and unsightly in actual operation of water jet ejector device, domestic large and medium-sized units all use water ring vacuum pump as condenser vacuum equipment, and this is also the technical transformation of water ring vacuum pump, in order to improve the circulation of our plant thermal efficiency

It shall be equipped with complete instrument measurement and control device, and the instrument interface shall ensure the accuracy of measured value and reading of medium. The pressure and differential pressure contact signals used for pump interlock and protection are sent out by absolute pressure transmitter to ensure the reliability of their action. The measuring range unit of the instrument shall be the national legal measurement unit. PT100 is used for thermal resistance, 4-20madc is required for analog signal, and passive dry contact is required for switching signal. Contact type is DPDT, and contact capacity is 220vac5a and 220vdc3a (none). The junction box is equipped with cabinet door and door lock. The sampling pipe and sampling valve of thermal control measuring point, including the secondary valve, are welded to avoid the impact of vacuum leakage on the vacuum of the unit.

Vacuum Pump In Vacuum Humidification

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump 

How to maintain the return oil of diffusion vacuum pump

What about the oil return from diffusion pump? If the vacuum gauge is not damaged, the oil return is generally not needed to be repaired. The main purpose is to clean the oil of diffusion pump in vacuum chamber. It's better to use gasoline to wipe the vacuum chamber wall all over again, and then wipe it with alcohol again. Oil must be clean is the most important, if there is oil in the room, there will be white film plating, film quality is very poor and other phenomena, not because of the damage of electroplating equipment, but because of oil in the vacuum chamber. 

1. The cooling water is blocked or the water pressure is not enough, which leads to the decrease of cooling capacity, the upper part of diffusion pump becomes hot, and the oil vapor cannot be liquefied well. The solution is to connect the inlet pipe of diffusion pump with 4MPa air source to blow out the scale, and connect the outlet pipe with 4MPa air source. If the scale is large and firm, dilute hydrochloric acid can be added. Or replace the diffusion pump.

2. The heating temperature is too high, because the power of the diffusion pump heater is not consistent with the rated power, too high, resulting in a large amount of steam, which can cause oil return. The problem can be solved by replacing the electric furnace wire.

3. If the oil filling quantity is too high, the steam circulation will be slow and the steam will be trapped when it is compressed to the lower level, which will cause oil return. The control of oil filling amount according to the information provided by the manufacturer can be avoided.

4. Oil oxidation, diffusion pump oil oxidation, viscosity and steam flow are affected, can not reach the injection speed, naturally returned to the vacuum chamber. It can be said that the diffusion pump is removed, the pump core is taken out, cleaned with 120 ° gasoline, then polished, the carbon deposit and black oxide layer are polished off, then cleaned and dried with 120 ° gasoline again, and then installed, the diffusion pump oil or silicone oil is poured in, and the work can be started after heating several times. Prevent contamination of workpiece.

5. If the working time of diffusion pump is more than 8-10 years, or in harsh environment, replacement can be considered. Improve work efficiency and maintenance cost.

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Dry Scroll Vacuum Pump

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Limit pressure of water ring vacuum pump

As each water ring vacuum pump manufacturer's products are different, so the parameters are also different. But their pressure is determined by the structure and quality. Users can judge the limit pressure of water ring vacuum pump according to the following two points: 

1. Limit relative pressure: the relative pressure is how much lower the measured internal pressure is than "atmospheric pressure". Because the air inside the container is pumped, the pressure inside the container is always lower than that outside the container. Therefore, when expressed in terms of relative pressure or gauge pressure, the value must be preceded by a negative sign, indicating that the internal pressure of the container is lower than the external pressure.

2. Ultimate absolute pressure: absolute pressure is the pressure higher than the theoretical vacuum. It compares the absolute vacuum pressure of the theoretical state. Due to the limitation of technology, we can't pump the internal pressure to the absolute vacuum value of 0Pa in any case. Therefore, the vacuum value pumped by the water ring vacuum pump is higher than the theoretical vacuum value.

Steam Jet Vacuum Pump Knowledge

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump

Wiring operation of vacuum pump unit

Only remove the cable before using the vacuum pump unit. When installing, you need to re connect the cable yourself. However, attention must be paid to the correct method when connecting cables. Otherwise, it will have a great impact on the use of vacuum pump device. Everyone serves to explain the connection method of vacuum pump device for everyone: 

When the vacuum pump unit wiring, must use polyester insulation tape. When packing, be sure to press half of the first circle and wrap in 8-12 layers. After wrapping, wrap two layers of plastic tape to increase strength. When the vacuum pump unit is connected, the copper core of the cable is stripped about 30-35mm long. Wipe the copper wire with abrasive cloth and strip the copper wire. The copper wire of the external three core cable is also stripped by 30-35mm and cleaned with abrasive cloth.

Insert the wiring of the vacuum pump unit into the copper wire part of the three core cable, strip off the external cable, and then bind it with fine copper wire, cut off the remaining part, and flatten it with scissors to prevent binding hands; at the same time, the three ends of vacuum pump shall be welded separately, and the surface of welding joint shall be smooth without burr and false welding. To ensure that there is no welding or unevenness, re weld the vacuum pump until the requirements are met.

For the wiring of vacuum pump unit, the three wires must be wrapped together with plastic tape to wrap two layers. The first layer is more than 50 mm above the end of each wire insulation layer and the second layer is 50 mm beyond the end of the first layer. Take a basin of cold water and immerse the wrapped thread in water safely. After 12 hours, the insulation shall not be less than 50 megohm with 500V megger. Otherwise, it should be repackaged until the requirements are met.

The grounding wire of the vacuum pump unit must also be wrapped according to the wiring process of the submersible cable; after connecting the vacuum pump unit, the insulation resistance should be continuously measured during drilling to observe the change and prevent the cable wall from damaging the cable insulation layer. When the drop is less than 0.5 megohm, the device must be started to detect the cause.


CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

difference between medical vacuum pump and industrial vacuum pump

Medical vacuum system is an important part of hospital design and construction. Its main application principle is vacuum suction. In the construction of medical vacuum pump system, the choice of medical vacuum pump is different from that of general industrial vacuum pump. These differences mainly involve three aspects. 

First, the vacuum in industrial production tends to be higher, while the vacuum in medical vacuum is lower. Vacuum is widely used in industrial production and has a long span. The vacuum degree of many vacuum applications is usually less than 1 HPA; while the medical vacuum cleaner is mainly used for dust collection, and generally does not need too high vacuum degree, and the absolute pressure is mostly between 13 ~ 60kpa, which is much lower than that of industrial vacuum pump. Therefore, it is necessary to distinguish when choosing medical vacuum pump.

The second point is that the continuity of the vacuum chamber is different. Many vacuum chambers in industrial vacuum applications are used intermittently, which means that the operation of vacuum pump is mostly intermittent; the medical vacuum system is used continuously and simultaneously with different gas points.

Third, the purpose of vacuum is different. Most industrial vacuum pumps pump out the gas in the vacuum chamber to create a vacuum environment for production; The medical vacuum cleaner is mainly used for vacuum cleaning, mainly for extracting various kinds of liquid (of course, the purpose is to extract anesthetic waste gas, etc.) therefore, when selecting the medical vacuum pump, the main concern is how much volume flow the vacuum pump can provide under the design pressure and how much liquid can be sucked out per unit time. This is also different from the choice of industrial vacuum pump. The corresponding pumping speed and inlet pressure and many other factors.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

Stainless steel vacuum pump pumping requirements

Stainless steel vacuum pump can be used to pump air to reduce pressure, but what should be pumped? 

Combine the pump correctly. Due to the selective pumping, sometimes a stainless steel vacuum pump can not meet the requirements of air extraction. Several pumps need to be combined to supplement each other to meet the requirements of air extraction. If the titanium sublimation pump has a high pumping speed for hydrogen, but can not pump helium, and the tripolar sputtering ion pump (or bipolar asymmetric cathode sputtering ion pump) has a certain pumping speed for argon, the combination of the two will make the vacuum device get better vacuum degree.

In addition, some stainless steel vacuum pump can not work under atmospheric pressure, need pre vacuum; some stainless steel vacuum pump outlet pressure is lower than atmospheric pressure, need the front stage pump, so all need to combine the pump.

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Dry Scroll Vacuum Pump

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Advantages of corrosion resistant water ring vacuum pump

Corrosion resistant vacuum pump, in particular, is a kind of water ring vacuum pump with corrosion-resistant materials set on the surface or local parts of parts flowing through the fluid. It is suitable for compression, filtration, concentration, adsorption, cooling, reaction and other process units in chemical, metallurgical, environmental protection, pharmaceutical, paper-making, chemical fertilizer and other industries. 

It has the characteristics of low cost, long life, relatively simple manufacturing process and high cost performance. The utility model integrates the advantages of several existing corrosion-resistant water ring vacuum pumps. According to the different requirements of corrosion resistance of various flow passage parts, according to the principle of equal life and actual process conditions, the utility model adopts different corrosion resistance measures on the substrate made of cast iron, cast steel or carbon steel, so as to greatly improve the acid resistance, alkali resistance and other corrosion resistance properties, especially the service life when pumping corrosive gases It can work reliably within the specified maintenance period under the vacuum degree of 3kpa absolute pressure and water and air brush. The maintenance cycle is 0.5-2 years according to the working conditions of corrosive medium, temperature and pump speed. Under the same working conditions and service life, the cost is at least 1-5 times lower than that of stainless steel.

It can be used repeatedly and economically. When the corrosion-resistant lining layer of the utility model is aged and invalid, it can be repaired simply, economically and effectively. Since the substrate of the parts will not fail, the maintenance can be repeated.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump

How to eliminate noise of vacuum pump

1. If the vacuum pump is in the working state, the vacuum degree indicated by the vacuum meter is about -0.093, it will produce sharp noise (cavitation sound). This is a normal phenomenon, because the vacuum pump itself has a matching cavitation protection pipe to reduce this noise, so as long as the valve is opened, the noise can be reduced. 

2. If the flow rate of working fluid is too large, cavitation noise will also be generated. If the flow rate of working fluid is not the above problem, it is very likely that the intermittent noise caused by friction and impact caused by impurities in the pump body may be caused by the high-speed operation of the impeller. Please repair and maintain it as soon as possible.

3. If the design, manufacture or material are not proper, the vane sliding is not smooth, or the blade head cannot always run close to the cylinder wall due to the existence of exhaust dead gap and incompressible oil, it will cause the impact sound of the vane on the cylinder wall. Therefore, the circular arc structure should be adopted to separate the inlet and exhaust ports. The dead gap is eliminated by the exhaust guide groove.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

How to select the required vacuum pump unit

The matching of vacuum pump unit is a strict series of specifications, which must be strictly calculated and designed. Therefore, when choosing the vacuum pump unit, we should consult the vacuum pump manufacturer or the vacuum pump professional. 

At the same time, when selecting the vacuum pump unit, we should inform the vacuum pump unit manufacturer of the practical application status and needs. Let them design supporting facilities according to the actual situation of consumption.

At the same time, we should pay attention to the overall quality of the vacuum pump unit, especially the quality of the vacuum pump. The quality of the vacuum pump often determines the quality level of the vacuum unit. At the same time, the manufacturer of vacuum pump unit will consider whether the auxiliary equipment such as condenser and dust collector can be required on the air inlet pipe of vacuum pump according to the practical application of users.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces

Oil free environmental protection dry screw vacuum pump

Why is the environmental protection problem of oil-free dry screw vacuum pump? Simply speaking, compared with oil vacuum pump, the extracted gas of oil-free dry screw vacuum pump will not be mixed with oil and gas, which can obtain a clean vacuum environment. In addition, if the extracted gas is corrosive to the oil, or contains a large amount of water and other substances that can damage the oil, then the oil vacuum pump cannot be used. As there is oil, the oil in the vacuum pump is usually used for lubrication and sealing. If the oil is corroded or emulsified, the vacuum pump can not work normally. 

Oil free dry screw vacuum pump is one of the essential equipment in the field of vacuum equipment. Power, oil, pharmaceutical, food and other areas closely related to people's life have different market demand for vacuum pump equipment. Under such huge demand, China's vacuum pump enterprises constantly stop the adjustment of industrial structure, so as to meet the needs of various categories At the same time, it can also stop the whole vacuum pump equipment to improve its technology.

After analyzing the current situation of domestic vacuum pump in recent years, it is found that there is no large pump group which can represent the whole vacuum pump industry market. Moreover, while the domestic vacuum pump market demand is expanding day by day, foreign advanced enterprises have numerous factories in China, and relying on their strong technical strength, they share the "share" with domestic vacuum pump enterprises. The promotion of competitiveness makes domestic vacuum pump enterprises pay more and more attention to the technology improvement of their own brand of vacuum pump equipment.

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