Chemical industry suitable for water ring vacuum pump
The only way to
solve the cavitation problem of vacuum pump in high vacuum state is to try to
improve the use environment of water ring vacuum, the temperature of circulating
water, the temperature of suction gas and other external conditions, so as to
reduce the cavitation of water ring vacuum pump.
In view of the
manufacturing accuracy of water ring vacuum pump, this problem is mainly the
understanding and improvement of the design capacity and production and
processing accuracy of the water ring vacuum pump manufacturer, which is also a
test of the production capacity of the water ring vacuum pump manufacturer.
The single-stage water ring vacuum pump can not meet the production
requirements, and the unit cost is too high. The traditional 2SK water ring
vacuum pump has many disadvantages. Aiming at various reasons, the multi-stage
water ring vacuum pump is designed. Under the high vacuum state, the efficiency
is more than 20% higher than the single-stage pump, and the performance is more
stable than the 2SK water ring vacuum pump, which is suitable for various
chemical industries.
In order to improve the air volume of water ring
vacuum pump in high vacuum, reduce the noise caused by cavitation erosion, and
reduce the damage of cavitation to the internal parts of vacuum pump, a new type
of high-efficiency air ejector is specially designed, which is 30% more
efficient than the traditional air ejector, and can be used together with water
ring vacuum pump to ensure that the air volume of water ring vacuum pump in high
real state reaches 75% of the standard air volume Above.
In the
long-term cooperation with customers, the vacuum pump mall has also invested a
lot of manpower, material resources and energy to help customers solve
"difficult problems". In particular, environmental protection issues, and then
the water ring vacuum pump and environmental protection equipment are closely
linked. Therefore, the vacuum environmental protection waste liquid treatment
system is designed, 100% of which adopts physical environmental protection
treatment method to eliminate secondary pollution.
2BV2 061 Water Ring Vacuum Pump
Two Stage Rotary Vane Vacuum Pump In Vacuum Precooling
How To Solve Screw Vacuum Pump Not Start
2019年12月15日星期日
Safety operation rules for rotary vane vacuum pump
Safety operation rules for rotary vane vacuum pump
I. purpose and scope of application of rotary vane vacuum pump
1. Vacuum pump is a basic equipment to pump out the gas in a specific sealed container and make the container obtain a certain degree of vacuum.
2. The vacuum pump is not suitable for pumping all kinds of gases with high oxygen content, toxic, explosive etched ferrous metal and chemical effect on vacuum oil, nor can it be used as compressor and delivery pump.
3. Vacuum pump is generally used at room temperature of 5-40 ℃ and relative humidity not higher than 90%.
II. Operating instructions of rotary vane vacuum pump
1. Check whether the power supply is connected, and start the vacuum pump motor after confirming the connection is correct.
2. Start 1-2 times intermittently, observe whether there is abnormal sound and special vibration during operation, and operate continuously only when there is no problem.
3. Check whether the cooling water pipe is smooth.
4. The air inlet of the pump shall be operated continuously in the open air for no more than three minutes to prevent the site from being polluted by fuel injection.
5. Pay attention to the position of the oil surface. Too much oil will cause poor start-up, oil return, oil injection and other adverse phenomena. Too little oil will not play the role of oil seal on the exhaust valve. There will be a large exhaust sound which will affect the vacuum degree. When the oil is insufficient, oil should be added through the oil filling hole, and the center of the oil injection pump oil standard is appropriate when the pump is stopped.
6. Vacuum pump oil of different types and brands shall not be mixed.
7. Open the valve on the intake nozzle of the pump, and the opening size depends on the specific situation.
8. When the pump is stopped, the valve on the air inlet nozzle shall be closed first. If the air vent valve is installed, the pump body shall be vented, and then the power supply shall be cut off.
9. Precautions
(1) always pay attention to the oil level;
(2) slowly open the valve after the pump is started;
(3) always pay attention to whether the pump operates normally, whether there is special sound, and whether the motor operates under overload;
(4) the cooling water shall not be interrupted;
(5) pay attention that the temperature rise of the pump does not exceed 40 ℃.
VACUUM FURNACE
industrial vacuum pumps,vacuum furnaces
Heat treatment equipment
I. purpose and scope of application of rotary vane vacuum pump
1. Vacuum pump is a basic equipment to pump out the gas in a specific sealed container and make the container obtain a certain degree of vacuum.
2. The vacuum pump is not suitable for pumping all kinds of gases with high oxygen content, toxic, explosive etched ferrous metal and chemical effect on vacuum oil, nor can it be used as compressor and delivery pump.
3. Vacuum pump is generally used at room temperature of 5-40 ℃ and relative humidity not higher than 90%.
II. Operating instructions of rotary vane vacuum pump
1. Check whether the power supply is connected, and start the vacuum pump motor after confirming the connection is correct.
2. Start 1-2 times intermittently, observe whether there is abnormal sound and special vibration during operation, and operate continuously only when there is no problem.
3. Check whether the cooling water pipe is smooth.
4. The air inlet of the pump shall be operated continuously in the open air for no more than three minutes to prevent the site from being polluted by fuel injection.
5. Pay attention to the position of the oil surface. Too much oil will cause poor start-up, oil return, oil injection and other adverse phenomena. Too little oil will not play the role of oil seal on the exhaust valve. There will be a large exhaust sound which will affect the vacuum degree. When the oil is insufficient, oil should be added through the oil filling hole, and the center of the oil injection pump oil standard is appropriate when the pump is stopped.
6. Vacuum pump oil of different types and brands shall not be mixed.
7. Open the valve on the intake nozzle of the pump, and the opening size depends on the specific situation.
8. When the pump is stopped, the valve on the air inlet nozzle shall be closed first. If the air vent valve is installed, the pump body shall be vented, and then the power supply shall be cut off.
9. Precautions
(1) always pay attention to the oil level;
(2) slowly open the valve after the pump is started;
(3) always pay attention to whether the pump operates normally, whether there is special sound, and whether the motor operates under overload;
(4) the cooling water shall not be interrupted;
(5) pay attention that the temperature rise of the pump does not exceed 40 ℃.
VACUUM FURNACE
industrial vacuum pumps,vacuum furnaces
Heat treatment equipment
Principle and common trouble analysis of water ring vacuum pump
Principle and common trouble analysis of water ring vacuum pump
Vacuum pump plays an important role in condensing steam turbine. Before start-up, the vacuum pump extracts the gas in the condenser to establish the vacuum; during start-up and operation, the vacuum pump extracts the non condensable gas which leaks or the working medium carries into the condenser, so as to strengthen the condensation effect of steam. In many forms of vacuum pump, water ring vacuum pump has the characteristics of simple structure, economic operation, wide range of application and so on, which has been widely used in power plants.
The water ring vacuum pump is composed of impeller, pump body, suction and exhaust port, auxiliary pipeline, etc. the specific structure is shown in Figure 1. The impeller is eccentrically installed in the pump body. When the impeller rotates, under the action of centrifugal force, water is thrown around, forming a closed water ring similar to the shape of the pump cavity. The outer surface of the water ring is in contact with the pump cavity, the inner surface is in contact with the blade, and a number of crescent shaped cavities are formed between the impeller hub and the water ring. When the impeller rotates clockwise, due to the influence of eccentric arrangement, the volume of a single small chamber increases from small to large, and the pressure in the chamber decreases continuously. When the pressure is lower than the gas pressure in the pumped container, the gas enters the small chamber from the suction port, which is the suction process. As the impeller continues to rotate, the volume of the small chamber decreases and the pressure increases until the pressure of the gas is greater than the exhaust pressure, the compressed gas is discharged from the exhaust port. In this way, during the continuous operation of the pump, the gas is continuously sucked in and discharged along the axial direction of the impeller, so as to achieve the purpose of continuous air extraction.
Due to the high vacuum requirements of the condenser, the suction pressure of the vacuum pump is easy to approach the limit vacuum (the saturation pressure of the working fluid), which leads to the working water in the pump being gasified and cavitation, which affects the safe operation of the pump. The specially designed cavitation protection pipe leads a way of air from the exhaust to the high true cavity in the pump to prevent cavitation. At the same time, a layer of gas protection film is formed on the surface of the impeller to prevent the impeller from being damaged when cavitation occurs. After accurate calculation, the size of the cavitation protection pipe will not affect the working pressure of the vacuum pump.
The working water of vacuum pump will be consumed in operation. The make-up water enters the pump body through the working fluid interface under the suction generated by the rotation of the impeller and makes up the water in time. Generally, the make-up water will be cooled by the cooler in advance, and cavitation can be avoided to some extent.
Liquid Ring Vacuum Pump For Paper Mill
2BE3 Series Liquid Ring Vacuum Pump
2BV series Liquid ring vacuum pump
Vacuum pump plays an important role in condensing steam turbine. Before start-up, the vacuum pump extracts the gas in the condenser to establish the vacuum; during start-up and operation, the vacuum pump extracts the non condensable gas which leaks or the working medium carries into the condenser, so as to strengthen the condensation effect of steam. In many forms of vacuum pump, water ring vacuum pump has the characteristics of simple structure, economic operation, wide range of application and so on, which has been widely used in power plants.
The water ring vacuum pump is composed of impeller, pump body, suction and exhaust port, auxiliary pipeline, etc. the specific structure is shown in Figure 1. The impeller is eccentrically installed in the pump body. When the impeller rotates, under the action of centrifugal force, water is thrown around, forming a closed water ring similar to the shape of the pump cavity. The outer surface of the water ring is in contact with the pump cavity, the inner surface is in contact with the blade, and a number of crescent shaped cavities are formed between the impeller hub and the water ring. When the impeller rotates clockwise, due to the influence of eccentric arrangement, the volume of a single small chamber increases from small to large, and the pressure in the chamber decreases continuously. When the pressure is lower than the gas pressure in the pumped container, the gas enters the small chamber from the suction port, which is the suction process. As the impeller continues to rotate, the volume of the small chamber decreases and the pressure increases until the pressure of the gas is greater than the exhaust pressure, the compressed gas is discharged from the exhaust port. In this way, during the continuous operation of the pump, the gas is continuously sucked in and discharged along the axial direction of the impeller, so as to achieve the purpose of continuous air extraction.
Due to the high vacuum requirements of the condenser, the suction pressure of the vacuum pump is easy to approach the limit vacuum (the saturation pressure of the working fluid), which leads to the working water in the pump being gasified and cavitation, which affects the safe operation of the pump. The specially designed cavitation protection pipe leads a way of air from the exhaust to the high true cavity in the pump to prevent cavitation. At the same time, a layer of gas protection film is formed on the surface of the impeller to prevent the impeller from being damaged when cavitation occurs. After accurate calculation, the size of the cavitation protection pipe will not affect the working pressure of the vacuum pump.
The working water of vacuum pump will be consumed in operation. The make-up water enters the pump body through the working fluid interface under the suction generated by the rotation of the impeller and makes up the water in time. Generally, the make-up water will be cooled by the cooler in advance, and cavitation can be avoided to some extent.
Liquid Ring Vacuum Pump For Paper Mill
2BE3 Series Liquid Ring Vacuum Pump
2BV series Liquid ring vacuum pump
A new type of corrosion-resistant water ring vacuum pump
Water ring vacuum pump is a kind of warm vacuum pump, which is suitable for pumping gas containing liquid. When pumping corrosive or explosive gas, it is often the first choice for designers. However, the original water ring vacuum pump produced by cast iron or carbon steel is not corrosion-resistant and can not guarantee the vacuum degree of the equipment stably for a long time: the service life is short, the comprehensive operation cost borne by the user is high, and the continuous production is inconvenient due to the frequent maintenance and replacement of the vacuum pump.
In order to solve the problem of corrosion resistance of water ring vacuum pumps, stainless steel pumps, ceramic pumps and composite lining pumps have been developed successively. These pumps have some improvement in corrosion resistance compared with traditional vacuum pumps, but there are still various deficiencies. Stainless steel pump has small corrosion resistance range and high cost; ceramic pump has poor toughness, is easy to be damaged and difficult to be replaced; composite corrosion-resistant lining pump has different material expansion coefficient due to the composite structure of different materials, which is easy to cause lining cracks, bulges, falling off and other problems.
At present, the corrosion-resistant water ring vacuum pump made of phenolic glass fiber reinforced plastics (commonly known as FRP) by hot pressing can completely solve the above problems. Table 1 is the data table of the corrosion resistance of phenolic FRP, stainless steel and cast iron or carbon steel. It can be seen from the table that the corrosion resistance of phenolic FRP is much better than that of stainless steel, cast iron and carbon steel in several common acid substances which cause serious corrosion to the equipment. Therefore, the water ring vacuum pump made of phenolic glass fiber reinforced plastic has obvious advantages in pumping various corrosive gases.
Liquid Ring Vacuum Pump In Waste Oil Treatment System
Minimum Capacity Vacuum Pump
Vacuum Pumps For Paper Machinery
2019年12月12日星期四
Roots vacuum unit Advantages
Roots vacuum unit Advantages
The useful improvement of all the functions of Roots vacuum unit can promote the production and production level of the workshop. In the process of expanding the advantages of its function development, it is necessary to further improve the ability of all aspects of the commodity development, improve the speed of the stronger commodity, control all the promotion of all aspects of its use role, and work together to promote the continuous development of commodity use ability The advantages of commodity practice can be reflected by improving the characteristics of its process improvement and enhancing its ability to improve the overall functions of its commodities.
Therefore, to ensure the quality of cadroz vacuum unit, it is necessary to further improve the foundation of all aspects of commodity use, expand the useful development of all its functions, and then complete the guarantee of its unit functions.
The manifestation of Roots vacuum unit is reflected in the whole application process, and an enterprise's victory over the competition among other enterprises is centered on product quality. In response to today's market economy, if it doesn't produce trustworthy products, then as a production enterprise, there will be no basic conditions for development, and it will only slowly eliminate the product enterprise by the market, and if it has With a solid quality foundation, no matter in the production and processing of any product, it will occupy the market with the priority of quality and become the representative of the leading products.
The development of Roots vacuum unit depends on the excellent product quality, taking the user's using degree as the standard, at the same time of increasing the product quality, constantly improving the unsuitable places, enhancing the product's advantages, through the overall design and research, giving full play to the maximum ability of the product, and showing the application effect in any state, which is the product's market success As a prerequisite for enterprises, quality should be the soul of products.
VACUUM FURNACE
industrial vacuum pumps,vacuum furnaces
Heat treatment equipment
The useful improvement of all the functions of Roots vacuum unit can promote the production and production level of the workshop. In the process of expanding the advantages of its function development, it is necessary to further improve the ability of all aspects of the commodity development, improve the speed of the stronger commodity, control all the promotion of all aspects of its use role, and work together to promote the continuous development of commodity use ability The advantages of commodity practice can be reflected by improving the characteristics of its process improvement and enhancing its ability to improve the overall functions of its commodities.
Therefore, to ensure the quality of cadroz vacuum unit, it is necessary to further improve the foundation of all aspects of commodity use, expand the useful development of all its functions, and then complete the guarantee of its unit functions.
The manifestation of Roots vacuum unit is reflected in the whole application process, and an enterprise's victory over the competition among other enterprises is centered on product quality. In response to today's market economy, if it doesn't produce trustworthy products, then as a production enterprise, there will be no basic conditions for development, and it will only slowly eliminate the product enterprise by the market, and if it has With a solid quality foundation, no matter in the production and processing of any product, it will occupy the market with the priority of quality and become the representative of the leading products.
The development of Roots vacuum unit depends on the excellent product quality, taking the user's using degree as the standard, at the same time of increasing the product quality, constantly improving the unsuitable places, enhancing the product's advantages, through the overall design and research, giving full play to the maximum ability of the product, and showing the application effect in any state, which is the product's market success As a prerequisite for enterprises, quality should be the soul of products.
VACUUM FURNACE
industrial vacuum pumps,vacuum furnaces
Heat treatment equipment
Installation and function of air water separator of dry screw vacuum pump
The air-water separator of dry screw vacuum pump can be directly installed on the exhaust port of oil-free vacuum pump, and fixed firmly with bolts. The gas-water separator has a pipeline connected with the pump, which supplies the water demand for the operation of the oil-free vacuum pump in the water ring. The rest of the operation water is supplied by the water supply pipe, and the size of the water supply is regulated by the valve on the pipeline. Check valve shall be installed on the intake pipe of dry screw vacuum pump or compressor to avoid the water in oil-free vacuum pump or compressor returning to the system under the pressure effect of exhaust pipe. The air-water separator of dry screw vacuum pump is actually very important. It is widely used in cooperation with vacuum pump. Basically, it can be used in any simple unit, with vertical and horizontal differences, which is based on the process needs.
Features of dry screw vacuum pump:
1. High definition clean vacuum
There is no medium in the working cavity of dry screw vacuum pump
Air will not come into contact with any chemicals
No pollution, more convenient gas recovery
2. No compression during operation
Dry screw vacuum pump does not have any pressure when working
When it's running, the air is like passing through an aisle
Without any extrusion, the solidified gas can be extracted
3. Suitable for many kinds of harsh working environment
The working cavity and rotor surface of dry screw vacuum pump are coated with nano film technology
(nano porcelain plating, aluminum plating, plating)
It is especially suitable for distillation, drying and degassing of products in pharmaceutical and chemical processes.
4. Oil free unit
Dry screw vacuum pump does not need vacuum pump oil, more environmentally friendly
It can form oil-free unit with roots pump and molecular pump
So as to achieve greater traffic to meet the needs of more customers
Vacuum System In Gas Power Plant
Dry Type Oilless Vacuum Pumps
Liquid Ring Vacuum compressor
Chemical industry suitable for water ring vacuum pump
The only way to solve the cavitation problem of vacuum pump in high vacuum state is to try to improve the use environment of water ring vacuum, the temperature of circulating water, the temperature of suction gas and other external conditions, so as to reduce the cavitation of water ring vacuum pump.
In view of the manufacturing accuracy of water ring vacuum pump, this problem is mainly the understanding and improvement of the design capacity and production and processing accuracy of the water ring vacuum pump manufacturer, which is also a test of the production capacity of the water ring vacuum pump manufacturer.
The single-stage water ring vacuum pump can not meet the production requirements, and the unit cost is too high. The traditional 2SK water ring vacuum pump has many disadvantages. Aiming at various reasons, the multi-stage water ring vacuum pump is designed. Under the high vacuum state, the efficiency is more than 20% higher than the single-stage pump, and the performance is more stable than the 2SK water ring vacuum pump, which is suitable for various chemical industries.
In order to improve the air volume of water ring vacuum pump in high vacuum, reduce the noise caused by cavitation erosion, and reduce the damage of cavitation to the internal parts of vacuum pump, a new type of high-efficiency air ejector is specially designed, which is 30% more efficient than the traditional air ejector, and can be used together with water ring vacuum pump to ensure that the air volume of water ring vacuum pump in high real state reaches 75% of the standard air volume Above.
In the long-term cooperation with customers, the vacuum pump mall has also invested a lot of manpower, material resources and energy to help customers solve "difficult problems". In particular, environmental protection issues, and then the water ring vacuum pump and environmental protection equipment are closely linked. Therefore, the vacuum environmental protection waste liquid treatment system is designed, 100% of which adopts physical environmental protection treatment method to eliminate secondary pollution.
2BV2 061 Water Ring Vacuum Pump
Two Stage Rotary Vane Vacuum Pump In Vacuum Precooling
How To Solve Screw Vacuum Pump Not Start
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