2020年4月16日星期四
Application and characteristics of multistage pump
The multi-stage pump has the characteristics of high power, safe and stable operation, low noise and long service life. For transporting clear water or liquid with physical and chemical properties similar to water, it can also be used to transport oil, corrosive or abrasive media by changing the raw materials of pump overflow parts, sealing methods and adding cooling system.
It is mainly used for pressurized water supply of industry and high-rise buildings, fire-fighting pressurization, long-distance water supply, heating and other cold and warm water circulation pressurization and equipment matching, etc. it is suitable for small boiler water supply.
The multistage pump is multistage and segmented type. The suction inlet is located on the water inlet section in a horizontal direction, and the discharge outlet is vertical and upward on the water section. The lift can be increased or decreased according to the use needs. Whether the water pump device is excellent or not has a great influence on its function. The outlet of each impeller and the inlet and outlet center of the guide wing will reduce the flow of the water pump and the power difference of the head. It is necessary to pay attention to it when repairing the device.
The main parts of multistage pump are: water inlet section, middle section, water outlet section, guide vane baffle, shaft, sealing ring, tail cover and bearing body. The water inlet section, water outlet section and tail cover are made of cast iron, which together constitute the working room of the pump.
Water Ring Vacuum Pump manufacturers
What is water ring vacuum pump
Dry Type Vacuum Pump
Sk water ring vacuum pump equipment description
Sk water ring vacuum pump equipment description
SK series water ring vacuum pump and compressor system is composed of vacuum pump (compressor), coupling, motor, air-water separator and bamboo circuit.
The working process of vacuum pump, compressor and gas-water separator is as follows: the gas enters the vacuum pump or compressor through the valve through the pipeline, then it is discharged into the gas-water separator through the air guide pipe, and then it is discharged through the exhaust pipe of the gas-water separator. When it is used as a compressor, the gas-water mixture discharged by the compressor is in the water separator. The gas is delivered to the system to be pressurized through Langmen, while the water is left in the gas-water separator. In order to maintain a certain water level of the gas water separator, an automatic overflow switch is installed, When the water level is higher than the required level, the overflow switch is turned on. Water overflows from the overflow valve: when the water level is lower than the required level, the overflow switch is turned off, and the water level in the gas-water separator rises to the required level. The working water in the vacuum pump or pressure machine is supplied by the gas-water separator (or tap water). The size of the water supply plate directly affects the performance of the vacuum pump, so the water supply pipe Valve control on.
The difference between gas suction system and pressure delivery system is that the internal structure of gas-water separator is ignored. When pumping gas, the pressure at the suction port is lower than the atmospheric pressure, while the pressure at the exhaust port is equal to the atmospheric pressure, and there is only overflow pipe in the gas water separator: when pressing gas, the suction port is under atmospheric pressure (or vacuum state), and the pressure at the exhaust port is at a atmospheric pressure. In order to ensure the delivery gas pressure, the water level of the gas water separator is controlled by the overflow switch.
Because in the working process, work produces heat, which will make the working water ring hot, and a part of water and gas are discharged together, therefore, in the working process, the pump must be constantly supplied with water to cool and supplement the water consumed in the pump to meet the working requirements of the pump. When the gas discharged from the pump is no longer used, a gas-water separator is connected at the exhaust end of the pump (a water tank can be made by yourself to replace it). After the waste water and part of the water are discharged into the gas-water separator, the gas is separated, the gas is wiped out by the wiping gas pipe, and the left water is supplied to the pump for further use through the return pipe. With the extension of working time, the temperature of working water will increase continuously. At this time, a certain amount of cold water (tap water) shall be supplied from the water supply of gas-water separator to reduce the temperature of working water and ensure that it can meet the required technical requirements and performance indicators.
When it is used as a compressor, the pump exhaust 11 is connected with a gas water separator, and the gas water mixture enters the gas water separator and then automatically separates, The gas is sent from the exhaust pipe to the required system, and the working water passes through the automatic When the switch is overflowed and the compressed gas is discharged, the working water is very easy to heat up. When the water is discharged from the pump outlet, the temperature will become higher. Therefore, at the bottom of the gas-water separator, the cold water shall be continuously supplied to supplement the discharged hot water and play a cooling role when necessary, so that the temperature of the working water will not be too high, so as to ensure the performance of the compressor, meet the technical indicators and meet the process requirements.
Vacuum Pump For Sulfuric Acid Plant
Water Ring Pump
Water Ring Vacuum Pump
SK series water ring vacuum pump and compressor system is composed of vacuum pump (compressor), coupling, motor, air-water separator and bamboo circuit.
The working process of vacuum pump, compressor and gas-water separator is as follows: the gas enters the vacuum pump or compressor through the valve through the pipeline, then it is discharged into the gas-water separator through the air guide pipe, and then it is discharged through the exhaust pipe of the gas-water separator. When it is used as a compressor, the gas-water mixture discharged by the compressor is in the water separator. The gas is delivered to the system to be pressurized through Langmen, while the water is left in the gas-water separator. In order to maintain a certain water level of the gas water separator, an automatic overflow switch is installed, When the water level is higher than the required level, the overflow switch is turned on. Water overflows from the overflow valve: when the water level is lower than the required level, the overflow switch is turned off, and the water level in the gas-water separator rises to the required level. The working water in the vacuum pump or pressure machine is supplied by the gas-water separator (or tap water). The size of the water supply plate directly affects the performance of the vacuum pump, so the water supply pipe Valve control on.
The difference between gas suction system and pressure delivery system is that the internal structure of gas-water separator is ignored. When pumping gas, the pressure at the suction port is lower than the atmospheric pressure, while the pressure at the exhaust port is equal to the atmospheric pressure, and there is only overflow pipe in the gas water separator: when pressing gas, the suction port is under atmospheric pressure (or vacuum state), and the pressure at the exhaust port is at a atmospheric pressure. In order to ensure the delivery gas pressure, the water level of the gas water separator is controlled by the overflow switch.
Because in the working process, work produces heat, which will make the working water ring hot, and a part of water and gas are discharged together, therefore, in the working process, the pump must be constantly supplied with water to cool and supplement the water consumed in the pump to meet the working requirements of the pump. When the gas discharged from the pump is no longer used, a gas-water separator is connected at the exhaust end of the pump (a water tank can be made by yourself to replace it). After the waste water and part of the water are discharged into the gas-water separator, the gas is separated, the gas is wiped out by the wiping gas pipe, and the left water is supplied to the pump for further use through the return pipe. With the extension of working time, the temperature of working water will increase continuously. At this time, a certain amount of cold water (tap water) shall be supplied from the water supply of gas-water separator to reduce the temperature of working water and ensure that it can meet the required technical requirements and performance indicators.
When it is used as a compressor, the pump exhaust 11 is connected with a gas water separator, and the gas water mixture enters the gas water separator and then automatically separates, The gas is sent from the exhaust pipe to the required system, and the working water passes through the automatic When the switch is overflowed and the compressed gas is discharged, the working water is very easy to heat up. When the water is discharged from the pump outlet, the temperature will become higher. Therefore, at the bottom of the gas-water separator, the cold water shall be continuously supplied to supplement the discharged hot water and play a cooling role when necessary, so that the temperature of the working water will not be too high, so as to ensure the performance of the compressor, meet the technical indicators and meet the process requirements.
Vacuum Pump For Sulfuric Acid Plant
Water Ring Pump
Water Ring Vacuum Pump
Classification and performance of vacuum pump
In recent years, a new type of vacuum pump has been developed, which can be realized with only one pump, from atmospheric pressure to high vacuum. But generally speaking, in order to obtain high vacuum, ultra-high vacuum and ultra-high vacuum, a series of vacuum pumps are used to complete the pumping task. Therefore, it is very important for the user to know the working principle, main performance, structural characteristics and classification of the pump.
Vacuum pump is a device used to produce, improve and maintain vacuum. According to its working principle, it is basically divided into two types: gas transfer pump and gas capture pump. The gas transfer pump is a vacuum pump which can make the gas continuously inhale and discharge out of the pump to reach the suction port. This kind of gas transfer pump includes two kinds: positive displacement pump and momentum transfer pump.
1. Positive displacement vacuum pump
The volume vacuum pump is a device that uses the periodic change of the volume of the pump cavity to complete suction, compression and exhaust. The gas is compressed before being discharged. This kind of pump is divided into reciprocating type and rotary type.
(1) Reciprocating vacuum pump uses the reciprocating motion of the piston in the pump cavity to draw in, compress and discharge the gas. Therefore, it is also called piston vacuum pump.
(2) Rotary vacuum pump uses the rotary motion of the piston in the pump cavity to suck, compress and discharge the gas. There are many kinds of pumps of this kind.
Shield Pump Maintenance
Shield Pump Selection Guide
Vacuum Pump For Ethylene Plant
2020年4月15日星期三
2BV water ring vacuum pump application and scope
2BV series water ring
vacuum pump is a coaxial single-stage pump with integral structure. The shaft
seal adopts mechanical seal, which has the characteristics of simple structure,
simple installation, oil-free, safe and reliable.
2BV series water ring vacuum pump is suitable for pumping out gas and wet steam, with suction pressure up to 33 A kind of B A kind of R absolute pressure (97% vacuum degree), when the suction pressure of 2BV water ring vacuum pump is lower than 80 A kind of B A kind of When working for a long time under the condition of R, the cavitation protection pipe should be connected to protect the pump. If the 2BV water ring vacuum pump is equipped with an air ejector, the suction pressure can reach 10 A kind of B A kind of r. The injector can be directly installed on the suction port of the vacuum pump. When it is used as a compressor, its maximum pressure is 0.26mp A kind of (absolute pressure).
2BV series water ring vacuum pumps and compressors are widely used in petroleum, chemical, pharmaceutical, food, sugar industry and other fields. Because the gas compression process is isothermal in the working process, it is not easy to explode when compressing and pumping flammable and explosive gas, so it is more widely used.
Water Ring Vacuum Pump manufacturers
What is water ring vacuum pump
Dry Type Vacuum Pump
2BV series water ring vacuum pump is suitable for pumping out gas and wet steam, with suction pressure up to 33 A kind of B A kind of R absolute pressure (97% vacuum degree), when the suction pressure of 2BV water ring vacuum pump is lower than 80 A kind of B A kind of When working for a long time under the condition of R, the cavitation protection pipe should be connected to protect the pump. If the 2BV water ring vacuum pump is equipped with an air ejector, the suction pressure can reach 10 A kind of B A kind of r. The injector can be directly installed on the suction port of the vacuum pump. When it is used as a compressor, its maximum pressure is 0.26mp A kind of (absolute pressure).
2BV series water ring vacuum pumps and compressors are widely used in petroleum, chemical, pharmaceutical, food, sugar industry and other fields. Because the gas compression process is isothermal in the working process, it is not easy to explode when compressing and pumping flammable and explosive gas, so it is more widely used.
Water Ring Vacuum Pump manufacturers
What is water ring vacuum pump
Dry Type Vacuum Pump
water ring vacuum pump structure and principle
Water ring vacuum pump
(referred to as water ring pump) is a kind of crude vacuum pump. The ultimate
pressure water ring pump it can obtain is in many processes of petroleum,
chemical industry, machinery, mining, light industry, papermaking, power,
metallurgy, medicine, food and municipal and agricultural sectors, such as
vacuum filtration, vacuum feeding, vacuum degassing, vacuum evaporation, vacuum
concentration and vacuum return, It has been widely used. Because the process of
compressed gas in water ring pump is isothermal, it can pump out inflammable and
explosive gas, as well as the gas containing dust and water. Therefore, the
application of water ring pump is increasing day by day.
Water ring pump is composed of impeller, pump body, suction and exhaust disc, water ring formed by water on the inner wall of pump body, suction port, exhaust port, auxiliary exhaust valve, etc.
In the water ring pump, the auxiliary exhaust valve is a special structure. Generally, rubber ball valve is used. Its function is to eliminate the phenomenon of over compression and insufficient compression during the operation of the pump. Both of these phenomena will cause excessive power consumption. Because the water ring pump has no direct exhaust valve, and the exhaust pressure is always fixed, the compression ratio of the water ring pump depends on the end position of the air inlet and the start position of the exhaust port, but these two positions are fixed, so they are not suitable for the needs of the change of the suction pressure. In order to solve this problem, rubber ball valve is generally set under the exhaust port, so that when the pump cavity reaches the exhaust pressure too early, the ball valve will automatically open and the gas will be discharged, eliminating the phenomenon of over compression. Generally, in the design of water ring pump, the minimum suction pressure is used to determine the compression ratio, so as to determine the starting position of the exhaust port, so as to solve the problem of insufficient compression.
Roots Water Ring System Introduction
Water Ring Pump
Water Ring Vacuum Pump
Water ring pump is composed of impeller, pump body, suction and exhaust disc, water ring formed by water on the inner wall of pump body, suction port, exhaust port, auxiliary exhaust valve, etc.
In the water ring pump, the auxiliary exhaust valve is a special structure. Generally, rubber ball valve is used. Its function is to eliminate the phenomenon of over compression and insufficient compression during the operation of the pump. Both of these phenomena will cause excessive power consumption. Because the water ring pump has no direct exhaust valve, and the exhaust pressure is always fixed, the compression ratio of the water ring pump depends on the end position of the air inlet and the start position of the exhaust port, but these two positions are fixed, so they are not suitable for the needs of the change of the suction pressure. In order to solve this problem, rubber ball valve is generally set under the exhaust port, so that when the pump cavity reaches the exhaust pressure too early, the ball valve will automatically open and the gas will be discharged, eliminating the phenomenon of over compression. Generally, in the design of water ring pump, the minimum suction pressure is used to determine the compression ratio, so as to determine the starting position of the exhaust port, so as to solve the problem of insufficient compression.
Roots Water Ring System Introduction
Water Ring Pump
Water Ring Vacuum Pump
Development status of vacuum pump in China
Vacuum pump is a large
quantity and wide range of products with large output and low output value, but
it is indeed an essential basic product that directly affects the performance
and quality of vacuum complete 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
expanding application fields of dry pump and molecular pump.
At present, the annual sales volume of the global vacuum pump market is about US $2 billion, with an annual growth rate of about 7%. There are many manufacturers of vacuum pumps in China. The annual sales volume of all vacuum pumps is about 150 million yuan, which is only equivalent to the annual sales volume of a vacuum pump of Ki º ey company in the United States. 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 a solid foundation. Domestic vacuum pumps have been applied and verified in various fields. Some pumps are also exported to foreign countries, recognized and praised by foreign users. It should be said that China's vacuum pump manufacturing industry still has a huge development space in the domestic and foreign markets.
Although the water ring vacuum pump belongs to the crude vacuum pump, it still has a large market in the fields of petroleum, chemical industry, electric power, light textile, paper making, medicine and so on. In foreign countries, the sales volume of water ring pump accounts for 14% of the total vacuum pump market, second only to dry pump. Because most of water ring pumps are castings with low processing requirements, they are labor-intensive products, so domestic water ring pumps have a competitive advantage in price. The key is to improve design, reduce volume, reduce weight, improve efficiency and reduce energy consumption.
Vacuum Pump In Pharmaceutical Chemistry
Vacuum Pump Working Range And Selection
Water Ring Vacuum Pump Material Requirements
At present, the annual sales volume of the global vacuum pump market is about US $2 billion, with an annual growth rate of about 7%. There are many manufacturers of vacuum pumps in China. The annual sales volume of all vacuum pumps is about 150 million yuan, which is only equivalent to the annual sales volume of a vacuum pump of Ki º ey company in the United States. 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 a solid foundation. Domestic vacuum pumps have been applied and verified in various fields. Some pumps are also exported to foreign countries, recognized and praised by foreign users. It should be said that China's vacuum pump manufacturing industry still has a huge development space in the domestic and foreign markets.
Although the water ring vacuum pump belongs to the crude vacuum pump, it still has a large market in the fields of petroleum, chemical industry, electric power, light textile, paper making, medicine and so on. In foreign countries, the sales volume of water ring pump accounts for 14% of the total vacuum pump market, second only to dry pump. Because most of water ring pumps are castings with low processing requirements, they are labor-intensive products, so domestic water ring pumps have a competitive advantage in price. The key is to improve design, reduce volume, reduce weight, improve efficiency and reduce energy consumption.
Vacuum Pump In Pharmaceutical Chemistry
Vacuum Pump Working Range And Selection
Water Ring Vacuum Pump Material Requirements
2020年4月14日星期二
Basis and conditions of vacuum pump selection
1. System requirements for vacuum degree
According to the requirements of the system for vacuum degree, the pump with corresponding limit vacuum is selected. Generally, the limit vacuum of the pump is 0.5-1 order of magnitude higher than that of the system.
2. Pressure range during normal operation of the system
The pressure range required for normal operation of the pump must meet the working pressure required by the system.
3. The type, composition, impurity of the extracted gas and the limit requirements for pollution during the operation of the system
The properties of the extracted gas and the requirements for pollution are important conditions for the selection of vacuum pumps with different characteristics. It is not only related to the performance of the pump at work, but also directly related to the working life and maintenance of the pump. Especially in the chemical production, it is often a key factor in the correct selection of the pump. Micro pump manufacturer
4. Air volume or volume flow of the system
This is the main basis for choosing a certain type of vacuum pump. Just like the micro vacuum pump, the average flow of air extraction is 6L / min, and the peak flow is 10L / min, which is the main parameter different from other products.
Water Ring Vacuum Pump manufacturers
What is water ring vacuum pump
Liquid Ring Vacuum compressor
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