Power supply mode of water ring vacuum pump

Water ring vacuum pump needs power supply in use and can be used in power supply equipment normally, but the power supply method is different. The efficiency varies with the mode of power supply. Here we introduce the power supply mode. 

1. The water ring vacuum pump has a large specific gravity because the extraction medium is "water or liquid". The working medium of micro vacuum pump and micro air pump is "gas" with light specific gravity. Therefore, the working current of the vacuum pump is generally larger than that of the latter, about 1 ~ 10 amperes, but the working current of the latter is generally not from a few hundred milliamperes to a few amperes.

2. Battery is the general term of battery. The principle is different from the dry battery, because it can provide large current and power, so it is widely used in electric vehicles, cars and other mobile vehicles, agricultural spraying, field sampling and other power shortage.

3. The common dry battery (such as 1.5V No.1 battery) has large internal resistance and small current supplied by itself. Most of the voltage is consumed by internal resistance, so the voltage drop is fast. From the point of view of power and service time, it is suitable for the power supply of water supply ring vacuum pump.

Roots Vacuum Pump

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump 

How to check the oil seal leakage of vacuum pump

No matter whether the water ring vacuum pump is pumping air or water, there should be no leakage. Check the oil seal carefully before use to see if it leaks. Oil seal is a kind of seal often installed in water ring vacuum pump equipment, which has good sealing effect. How to check whether the vacuum pump oil seal leaks? 

1. The water level indicator in the vacuum system is not broken or leaking.

2. Close the drain valve on the steam side of the condenser to prevent leakage.

3. Check whether the water ring vacuum pump is under negative pressure, whether the water level of the low pressure heater is normal and whether the drain valve is sealed.

4. Check whether the exhaust steam safety valve of low pressure cylinder is in good condition and there is no air intake.

5. Check whether the gravity return water of the speed control feed water pump leads to the condenser. If the return water volume is small and the water seal bag cannot be sealed, the gravity return water from the sealing water of the water supply ring vacuum pump should be poured into the groove.

6. Check the area connecting the vacuum exhaust pipe and the cylinder for air leakage. When the load drops, the air leakage will be reduced, while when the load rises, the vacuum will increase slightly.

7. If the water seal, pipe, flange or weld of vacuum system valve is not firm, especially the pipe and valve port from expansion tank or boiler start-up separator to condenser.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

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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

Oil change of vacuum pump

Because the chemical or pharmaceutical process gas will contain flammable, explosive and corrosive gases to varying degrees, which is why the dry vacuum pump for us also needs special treatment. For the simple internal structure of dry screw vacuum pump, the two rotors and pump cavity should be treated with anti-corrosion. At this time, we should pay attention to the selection of nickel phosphorus coating and Teflon coating. 

Claw vacuum pump is more difficult to do anti-corrosion treatment, there is almost no way to do surface treatment between all levels of diaphragm, so the anti-corrosion coating on the rotor surface is relatively easy, and it will not be damaged during assembly. Oil free vortex vacuum pump is only suitable for pumping clean gas, at this time it can not pump flammable, explosive and corrosive gas.

When it comes to the oil change of vacuum pump equipment, we should pay attention to the oil change once after the vacuum pump equipment has been working continuously for three to six months. In areas with high humidity, the pump working in wet season, or the pump is heavily polluted by pumping gas. In this regard, to a large extent, we should pay attention to shortening the oil change time according to the specific situation Between.

When changing the oil of vacuum pump equipment, first of all, it is necessary to remove the vacuum system from the pump, then it is also necessary to pad up one end of the chassis motor, open the oil drain plug to drain the oil, rotate the vacuum pump, cover the exhaust port, so that all the dirty oil in the cavity is discharged from the oil drain port, and then add 100-500ml new oil from the air inlet port, continuously rotate for more than 5-10 revolutions, and clean the interior according to 3-5 After the special dirty oil is discharged, install the oil drain plug, level the pump, add new oil from the air inlet and oil filling hole respectively, and the oil change is completed.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

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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

Market of vacuum pump

Vacuum pump is a kind of widely used product with large output and low output value, but it directly affects the performance and quality of vacuum equipment. 

The market of vacuum pump changes dynamically according to the needs of users. The main driving force of market growth comes from the rapid development of semiconductor industry and the increasing application of dry pump and molecular pump. 

There are many vacuum pump manufacturers in China, and the annual sales of all vacuum pumps are about 150 million yuan, which is only equivalent to the annual sales of a vacuum pump in an American company. Through the analysis of the global vacuum pump market, we can see that the market and application fields of various vacuum pumps are constantly changing and developing. China's vacuum pump manufacturing industry has a long history and strong foundation. Domestic real pumps have been applied and verified in various fields. Some pumps have been exported to foreign countries, and have been recognized and praised by foreign users. It should be said that China's vacuum pump manufacturing industry still has a huge development space at home and abroad.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots 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 

Adjustment method of axial clearance of vacuum pump unit

Together to explore the vacuum pump unit axial clearance adjustment method, I hope to help you.

1. The axial clearance of the impeller is kept at about 2-4mm by pre adjustment to prevent the shaft from extending due to the axial force of the vacuum pump unit and the screw tightening, resulting in the friction between the impeller and the guide vane surface.

Pre adjustment method: after the deep well water pump is installed, remove the motor cover, turn the adjusting nut with a wrench, and rotate the coupling anticlockwise by hand. When the coupling and transmission shaft can rotate freely, it means that the rotating part of the water pump has been lifted by the adjusting nut, and the impeller has a gap. Use a wrench to rotate the adjusting nut (press the coupling by hand), and lower the transmission shaft. When the impeller clearance disappears, the impeller and the guide vane rub, and the coupling cannot be turned by hand. When the transmission shaft is hoisted again to make the axial clearance reach 2-4mm, the position of the adjusting nut is fixed to complete the pre adjustment.

2. After 16-20h operation, the size of each part has reached a stable state, and the final adjustment can be carried out. The adjustment method of final regulation is the same as that of pre adjustment.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

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Frequency conversion series air compressor chemical industry

Chemical industry in the production process often uses and produces corrosive gases, liquids and dust, a large number of flammable and explosive dangerous substances, as well as irritant, polluting and other toxic substances, so chemical plants are mostly built on water. In the design of building structure and production equipment will be considered in all aspects of anti-corrosion, fire, explosion-proof measures. With the rapid development of science and technology, modern chemical plants mostly use energy-saving, intelligent regulation and centralized control of chemical equipment. 

Clean and stable compressed air is indispensable in the complex production process of chemical plant. The compressed air from the air compressor is compressed and discharged into clean and stable gas after passing through a set of precise post-treatment system of gas storage tank, dryer and filter, and then divided into two pipelines: one is used to drive some pneumatic equipment, the other is used to produce nitrogen and chemical raw materials. Therefore, a high quality air compressor and post-treatment system will be directly related to the production process of the whole chemical plant.

API 681 Liquid Ring Vacuum Pump

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump

Market competitiveness of water ring vacuum pump

In the development process of continuously developing the practical performance of its products, competitiveness has become a driving force for the overall quality development of the equipment. On the basis of enhancing the application ability of various aspects of its advantages, the overall application strength of the product has been accelerated. 

In order to improve the performance of water ring vacuum pump application performance, in order to achieve the advantages of the development of its products in all aspects, fully reflect its practical performance in all aspects, and constantly drive its overall excellence with practical product strength The improvement of potential ability can reflect the application performance of the equipment in the actual effect of various aspects of application, so as to give full play to the practical effect of the product under the overall application ability according to the drive of quality strength.

Market competitiveness is also a kind of promotion for the development of water ring vacuum pump. In the practical process of vigorously developing its overall application, it is necessary to increase the performance of the overall value of the product with a reliable advantage level, and further develop the overall development of its practical advantages combined with the play of its comprehensive performance, so as to reflect the performance of the overall performance of the product with the strength of all aspects.

Water Ring Vacuum Pump

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Configuration of high vacuum unit

Different vacuum systems require different degrees of vacuum. Therefore, it is often necessary to complete by a set of vacuum units, that is, the vacuum pumps working in different pressure ranges are connected in series.

The vacuum pump with high vacuum discharge can meet the requirements of vacuum pump on one side. Obviously, the simplest vacuum unit is a vacuum pump with direct discharge to the atmosphere. However, the high vacuum system generally needs three-stage units, and the medium vacuum system generally needs two-stage units.

It is difficult for a high vacuum pump and a low vacuum pump to form an effective high vacuum unit. There are several reasons for this. The continuity of traffic is one of them. High vacuum pump has the limitation of pressure resistance of the front stage, that is, if the former stage is higher than a certain pressure, the pump can not work normally. When the current stage pump reaches this critical pressure, the pumping speed will be reduced, so the exhaust flow of the front stage pump may be less than that of the main pump. The inconsistency of the flow rate destroys the requirement of flow continuity, which will inevitably cause the vacuum unit not to work normally. However, if a medium vacuum pump is connected between the high and low vacuum pumps, it can serve as a connecting link between the preceding and the following. The flow rate is continuous, and all pumps can work in the best state. Roots pump can work in the medium vacuum range, is the most suitable, so it is also known as roots booster pump, because its compression ratio is not high, just can connect a few PA to hundreds of PA range. When the three-stage high vacuum unit enters a higher vacuum degree, due to the obvious reduction of the exhaust flow of the main pump, the continuity of air extraction can be maintained only by a small front stage pump. In practical application, this method is often used, which can reduce the energy consumption of the unit.

Another reason why high vacuum units often need three-stage units is due to the limitation of suction pressure of high vacuum pump. All pumps have initial working pressure, and traditional high vacuum pumps are in the range of several PA. Therefore, the front stage pump must be pre pumped to this pressure before the main pump can start to work. However, it usually takes a long time for the front-stage pump to pump to this pressure, because the pumping speed of the pump decreases with the decrease of the pressure. Especially for the vacuum unit with periodic air pumping, the time required for reaching the working vacuum degree is required. The longer the pre pumping time is, the longer the time for entering the working vacuum degree is. Therefore, a medium vacuum pump is added to cooperate with the front stage low vacuum pump to realize the working vacuum degree It takes a short time to reach the working pressure of the main pump, so that the system can enter into the working pressure as soon as possible, thus ensuring the use efficiency of the equipment.

Rotary Vacuum Pump For Photoresist Removal

Water ring vacuum pump

Rotary Vane Vacuum Pump

Roots rotary vane vacuum pump unit operation

The first very important process of using roots rotary vane vacuum pump unit is the preparation before starting. Check all parts, check whether the cooling circuit of roots pump is smooth, and check the exhaust valve to ensure that it is in the open state. Pay attention to check to ensure that the oil level of each pump is on the oil level line. If it is below the oil level line, it is required to add oil. If it exceeds the oil level line, it should be drained. Check whether the rotation direction of the motor is the same as that of the arrow on the pump. If the use of equipment is suspended for a long time, are the parts rolling sensitive when starting up again? If it can't roll, it is necessary to roll several revolutions by manpower. It is absolutely forbidden to start it by force with the motor, which will cause serious damage to the pump. 

The second process is to pay attention to the problems when starting. Before starting, the cooling water valve of roots pump should be opened, and the front stage pump of rotary vane vacuum pump should be started to open the inlet valve of front stage pump together. Open the air inlet valve of the front and rear stage, and turn on the air valve smoothly. During the working process of the equipment, if the temperature of some parts is too high, there may be irregular noise, or other abnormal phenomena. The roots rotary vacuum unit should stop checking immediately.

The third operation is to stop the problem that the device needs to pay attention to. Before stopping, the inlet valve should be closed first, and the vent valve of roots pump should be opened. Then the equipment will stop actively. Close the inlet valve of the front stage pump and stop the front stage pump together. The valve of the cooling water device is closed. If the operation is stopped for a long time, the roots rotor vacuum unit should drain all the water in the cooling water jacket in the cold zone, otherwise, the water in the sleeve will swell and cause damage due to freezing.

Finally, repair and maintenance, roots rotary vacuum unit should adhere to the environment around the equipment clean and boring. Always check the smoothness of each part. If there is a lack of smooth oil, it should be made up in time. When the lubricating oil is polluted, clean lubricating oil should be replaced in time. After replacement, the bolts should be tightened from the beginning to ensure the sealing environment. When disassembling and repairing, all parts must not be struck by external force. Pay special attention to the smooth and smooth sealing surface, otherwise it will cause air leakage after re installation.

H Piston Vacumm Pump Start And Stop

Rotary Vane Vacuum Pump

Dry Scroll Vacuum Pump

Maintenance of fixed plate mechanical vacuum pump

The structure of fixed plate mechanical vacuum pump is all combined, similar to small five pieces. The exhaust valve is of the bullet type. If it is used for a long time, the bullet will also fly off, resulting in the failure of no air extraction; some pumps have manufacturing problems, the vent hole is too oblique, the bullet can not return to its original position after being lifted by the air flow, and the valve port can not be blocked, so the vacuum degree is not high. When repairing, the air outlet can be reamed into the inlay sleeve to correct the air outlet, so as to overcome the above problems. 

After several years of service, the vacuum degree of the fixed plate vacuum pump becomes worse due to wear and tear. At this time, the pieces can be disassembled and grinded against each other. After being cleaned, they can be assembled. At this time, if the tolerance between the rotor and the end face is too small, some end faces can be ground and installed again. The stator is tightened by the spring to keep it close to the rotor forever to prevent the reverse "breakthrough" of gas. Therefore, the spring has a large expansion frequency and is easy to break. If one of the two springs is broken, the pulsating sound of the exhaust valve is paroxysmal, and the fuel tank cap can be disassembled for inspection.

In winter, the viscosity of the oil sometimes becomes very large, after stopping the pump, the air is not put into the pump cavity in time, causing the oil to fill the pump cavity. When the pump is started suddenly, the oil in the cavity is difficult to be squeezed out at once. The stator is often squeezed out of the stator groove or the rotor is broken (or even the rotor is cracked), so it is impossible to pump air. When repairing, only the fixed piece is out of the way. The end of the fixed piece can be gently knocked with a wooden strip to make it return to its original position, and the belt pulley is turned on manually. After the pump oil in the cavity is discharged, the pump can be started for air extraction. If the rotor is damaged, it should be replaced with a new one. Therefore, the fixed vane pump start and normal use must comply with certain regulations, should also stipulate the oil change system on schedule.


CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

Vacuum pump treatment of pollution in vacuum system

 Low vacuum devices such as vacuum transportation, vacuum impregnation, vacuum filtration, vacuum monotony, vacuum degassing (liquid steel disposal) are required to have low vacuum pump units with high working pressure and large displacement. The main pumps of such low vacuum pumping units are reciprocating vacuum pump, oil sealed vacuum pump, steam radiation pump, water ring pump, roots pump, etc. 

According to the cleaning degree, humidity or other special requirements, the low vacuum pumping unit should be equipped with necessary dust remover, monotone tank and other components. During the tightening process, water vapor will condense into water droplets and mix with the pump to form a suspension, which will not only make the vacuum drop, but also rust the pump cavity and rotor, destroy the sealing surface and make the limit vacuum of the pump drop. Therefore, it is very important to prevent water vapor from polluting the mechanical pump.

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Dry Scroll Vacuum Pump

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Working principle of circulating water cooling device for vacuum pump unit

What is the working principle of circulating water cooling device of vacuum pump unit? Let's have a brief understanding. Pump the water in the storage tank into the water sprayer, and pump the water to the cooling water inlet of the unit 

Under the action of exhaust fan, the water evaporates on the surface, dissipates heat and cools down, and then returns to the water storage tank. The distribution of the holes on the porous plate determines the position of the water column, so that the small holes on the porous plate are evenly distributed, so that the air flow can fully contact the water column and form the surface of swallow hair as large as possible Achieve the purpose of water cooling

Considering that the water discharged from the vacuum unit is far away from the air and the temperature difference between it and the air is relatively large, the first stage of forced cooling with air cooling is designed. The water discharged from the vacuum unit passes through the radiator first, and the radiator is placed behind the fan, and then the cool air passing through the water is blown to the radiator, so that the hot water discharged from the diffusion pump is cooled, and then returned to the water storage tank. The cooling water flow in the diffusion pump can be controlled It was observed directly in the device.

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Causes of seal damage of multistage vacuum pump

There are two kinds of reasons for the seal damage of multistage vacuum pump: artificial damage and natural damage. The seal of multistage vacuum pump will be damaged by scratch, bruise and squeeze when it is opened and closed. Mechanical damage between two sealing surfaces. Under the action of high temperature and high pressure, atoms permeate each other and cause adhesion. When the two sealing surfaces move with each other, the adhesion is easily pulled and torn. The higher the surface roughness of the sealing surface of the multi-stage vacuum pump, the more easily this phenomenon occurs. 

When the medium is active, the sealing surface of multi-stage vacuum pump is worn, washed and cavitated. The floating fine particles in the medium collide with and offend the sealing surface, causing local damage. The high-speed moving medium directly washes the sealing surface, causing local damage. When the medium is mixed and vaporized locally, the gas generating bubble blasting impacts the sealing surface, causing local damage. Medium erosion and chemical erosion alternate action, will strongly erode the sealing surface.

The potential difference and electrochemical corrosion will occur due to the contact between sealing surfaces, the contact between sealing surfaces and sealing body and valve body, as well as the concentration difference of medium and oxygen concentration, which will lead to the corrosion of sealing surface on the anode side. However, in the case of no current generated by the medium near the sealing surface, the medium directly reacts with the sealing surface, forming chemical erosion and eroding the sealing surface.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

System composition of main vacuum system

The vacuum system of vacuum gas drying equipment consists of two parts: main vacuum system and leakage pump system. 

The main vacuum system is composed of the main pump (roots vacuum pump), front stage pump (rotary vane vacuum pump or slide valve vacuum pump), front stage condenser, central condenser, exhaust separator, steam pressure gauge, pipes, valves and other components. The effect is to vacuum the vacuum tank in the preparation stage, high vacuum stage and vacuum pump oil.

Although the kerosene in the vacuum system is exhausted during the depressurization stage, there is still residual kerosene in the insulation data. Therefore, in the high vacuum stage, the gas entering the main vacuum system still contains a certain amount of kerosene vapor, which will condense into liquid in the front condenser and the central condenser, while the water vapor component in the gas is discharged by the front stage pump and collected in the exhaust condenser.

The two front-stage pumps are also responsible for the mission of urgent spare time when the heat generator and vacuum tank are in trouble. Emergency evacuation is carried out through the pipe of valve 3 through the main condenser of the condensing system. The condenser is used to ensure that the hot gas of the fire oil condenses during the time of extraction, so as to make the steam of the fire oil less enter the vacuum unit.

VSD Vacuum Pump

Oil Sealed Rotary Screw Vacuum Pumps

Oil-Injected Screw Vacuum Pump

dry vacuum pump operation process

What is the operation process of dry vacuum pump? Let's discuss the operation process of dry vacuum pump as follows: 

After the equipment is running, with the rotation of the motor and the action of the crank connecting rod mechanism, the piston in the cylinder repeatedly makes reciprocating motion. As the piston moves from left to right in the cylinder, the pressure in the left chamber will continue to decrease as the cylinder volume increases. When the pressure in the left chamber is gradually lower than that in the pump chamber, according to the principle of air pressure balance, the gas in the pump chamber is sucked into the left chamber one by one through the suction valve. At this time, the suction valve is in the suction, which completes half of the working process of the vacuum pump.

When the piston moves to the right, the left chamber of the cylinder is filled with gas. When the piston moves from right to left, the suction valve of dry vacuum pump will close automatically. As the piston moves from right to left, the gas is slowly compressed. When the steam body in the cylinder reaches the exhaust working pressure, the exhaust valve will open to exhaust and carry out the working circulation system. When the piston moves again from the left end to the right end, the above cycle is repeated until the suction container reaches a relatively balanced pressure.

Vacuum Bellows Type

Vacuum Valve Common Connection Forms

Rotary Vane Vacuum Pump In Servo Cooling Equipment 

Energy saving vacuum system

According to the calculation, after recognizing the pumping speed of vacuum pump, it is necessary to carefully consider the type of pump. For example, for the oil sealed mechanical pump with pumping speed of 150L / s, the slide valve pump needs 17kw of driving power, while the cycloid pump only uses 13kw. If the latter is selected for long-time operation, it will save much electric energy, and has small volume, light weight, small oscillation and convenient repair. The transmission power of the direct coupled pump is better than that of the V-belt drive.

Also such as oil laxity pump, oil booster pump thermal power is very low, long starting time, will also consume a lot of energy and time, so can choose low transpiration latent heat oil as working fluid. In the heating system of the pump, the heating power is reduced from 30kW to 20kW, and the pumping effect is the same. Then roots vacuum pump starts quickly, especially suitable for the system with frequent starting. If the oil booster pump or fault expansion pump is selected, the system will not stop the pump during the non operation period, wasting energy in vain. It is also a good way to save energy.

In the vacuum system of roots pump, the pressure difference between the outlet and the inlet of roots pump should not be too large, otherwise it will bring too much power consumption. Because the power consumption of this pump is proportional to the pressure difference. Generally, a small roots pump is connected in series to save power consumption.

CL Sereis Cone Liquid Ring Vacuum Pump

Roots Blowers

Roots Vacuum Pump 

Pump valve industry market

 

Driven by industrialization, urbanization, reform and globalization, the prospect of China's pump and valve equipment manufacturing industry is still broad. In the future, high-end, localization and modernization of pump and valve industry will be the main development direction of pump and valve industry in the future. The pursuit of continuous innovation, to create a new market for valve enterprises, so that enterprises in the increasingly fierce competition in the pump valve industry tide to survive and seek development.

With the continuous development of pump valve technology and the continuous expansion of pump valve application field, the corresponding pump valve standard is more and more indispensable. The products of pump and valve industry have entered a period of innovation. Not only the product categories need to be updated, but also the internal management of enterprises needs to deepen the reform according to the industry standards.

Therefore, it is necessary to make full use of the existing standards, look forward to the future, and develop new standards and systems that can be applied in the future, so as to promote the development of pump valve technology at a higher level. In the future, the industry of pump and valve will develop in two main directions: one is to develop from single product to multi variety and multi specification; the other is to develop in the direction of energy saving.

Water Ring Vacuum Pump

Dry Scroll Vacuum Pump

industrial vacuum pumps,vacuum furnaces