1. The ultimate pressure of the oil free high vacuum pump
The ultimate pressure unit of the pump is Pa, which refers to the lowest pressure that tends to be stable when the pump is equipped with a standard test cover at the inlet and works according to specified conditions, and works normally without introducing gas.
2.Pumping rate of oil free high vacuum pump
The pump pumping rate unit is m3/s or l/s. It refers to the gas flow rate flowing through the test cover and the equilibrium pressure measured at the specified position of the test cover when the pump is equipped with a standard test cover and works according to specified conditions. Ratio. Referred to as the pumping speed.
3. Air pumping capacity of oil free high vacuum pump
The pumping volume unit of the vacuum pump is Pam3/s or Pal/s. Refers to the gas flow rate at the pump inlet.
4. Starting pressure of oil free high vacuum pump
The starting pressure unit of the vacuum pump is Pa, which refers to the pressure when the pump starts without damage and has a pumping effect.
5. The front pressure of the pump
The front-stage pressure unit of a vacuum pump is Pa, which refers to the outlet pressure of a vacuum pump whose exhaust pressure is lower than one atmosphere.
6. Maximum front stage pressure of oil free high vacuum pump
The unit of the maximum front-stage pressure at the vacuum pump port is Pa, which refers to the front-stage pressure that exceeds the pressure that can damage the pump.
7. Maximum working pressure of oil free high vacuum pump
The maximum working pressure unit of the vacuum pump is Pa, which refers to the inlet pressure corresponding to the maximum pumping volume. Under this pressure, the pump can operate continuously without deterioration or damage.
8. Compression ratio
The compression ratio of an oil-free high vacuum pump refers to the ratio of the pump's outlet pressure to the inlet pressure for a given gas.
9. Ho's coefficient
The ratio of the actual pumping speed on the pumping channel area of the oil-free high vacuum pump to the theoretical pumping speed calculated based on molecular effusion.
10. Pumping speed coefficient
The ratio of the actual pumping speed of the pump to the theoretical pumping speed calculated based on molecular efflux at the pump inlet.
11. Reflux rate
The unit of pump return flow rate is g/cm2.s. It refers to the mass flow rate of the pump flow per unit area through the pump inlet when the pump operates under specified conditions.
12. Water vapor allowance
The allowable unit of water vapor is kg/h, which refers to the mass flow rate of water vapor that the gas ballast pump can remove when the pump operates continuously under normal environmental conditions.
13. Maximum allowable water vapor inlet pressure
The maximum allowable water vapor inlet pressure unit is Pa. It refers to the highest inlet pressure of water vapor that can be removed by a gas ballast pump during continuous operation under normal environmental conditions.
|
Model |
ultimate pressure |
Rated pumping speed |
rated power |
Noise |
weight |
Installation dimensions (mm) |
air intake |
exhaust vent |
||
|
KPa.A |
m³/h |
KW |
dB |
kg |
long |
Width |
high |
DN |
DN |
|
|
SUP-11PM |
20 |
700 |
11 |
75 |
1300 |
1500 |
1100 |
1400 |
80 |
65 |
|
SUP-15PM |
20 |
900 |
15 |
76 |
1300 |
1600 |
1150 |
1500 |
80 |
65 |
|
SUP-22PM |
20 |
1500 |
22 |
77 |
1500 |
100 |
80 |
|||
|
SUP-37PM |
20 |
2500 |
37 |
80 |
1800 |
1960 |
1300 |
1690 |
150 |
100 |
Introduction to oil-free high vacuum pump accessories
Oxidation stability: It is not easy to deteriorate even if it is in direct contact with air, resin, chemical raw materials, etc. under high temperature conditions for a long time, reducing the formation of harmful paint films and grease, and providing a longer oil change cycle.
Anti-rust and anti-corrosion: It can form a very effective anti-corrosion film on the metal surface, thus comprehensively preventing system corrosion caused by inhalation of corrosive gases and moisture.
It can quickly separate the water entrained in the oil to achieve the required vacuum degree.
It has a lower vapor pressure to prevent oil from flowing back and spreading from the inner cavity of the pump to the vacuum system, causing oil backflow. This ensures sufficient ultimate vacuum.
Filter element: used to filter gas and oil in the vacuum pump to keep the vacuum pump clean and running normally.
The filter element separates solid particles in liquid or gas, or fully contacts different material components to speed up the reaction time, which can protect the normal operation of the equipment or the cleanliness of the air. When the fluid enters the filter element equipped with a certain specification filter, its impurities are blocked , and the clean flow flows out through the filter element. The liquid filter element allows liquids (including oil, water, etc.) to be cleaned to the state required for production and life, that is, the liquid reaches a certain degree of cleanliness.
Water cooler: used to cool the vacuum pump to prevent overheating and damage.
Water cooler is a type of condenser commonly used in vacuum tower top vacuum systems. Since the temperature of circulating water for cooling is usually 30~32°C, conventional water coolers (arbow baffles, floating head type) have minimum temperature difference limitations for cross-heat transfer. When the temperature after cooling reaches below 40°C, the temperature of the circulating water If the riser is too small, the consumption of circulating water will be too large, so it has been rarely used in recent years.
Vacuum pump valve: used to control the flow of gas and liquid and maintain the pressure of the vacuum pump.
Vacuum valve refers to a vacuum system component used in a vacuum system to change the direction of air flow, adjust the amount of air flow, and cut off or connect pipelines. Vacuum valve closing parts are sealed with rubber sealing rings or metal sealing rings.
Vacuum pump connector: used to connect the vacuum pump and other equipment or pipes.
Vacuum gauge: used to measure the pressure inside the vacuum pump to ensure normal operation of the vacuum pump.
Vacuum Gauge, also known as vacuum gauge, is an instrument for measuring vacuum or air pressure. Generally, the changes in certain physical effects of gases under different pressures are used to measure air pressure. It is widely used in scientific research and industrial production.
Vacuum pump controller: used to control the start, stop and operating mode of the vacuum pump.
The vacuum pump intelligent controller is a mechanical device used to automatically detect the working status of the power supply of multiple oil dispensers and start and stop the vacuum pump accordingly.
Vacuum pump seal: used to seal the internal and external interfaces of the vacuum pump to avoid gas leakage.
Its advantages include good sealing, good resistance to gases and liquids, and suitable for use under high temperature and high pressure conditions. However, the disadvantage of rubber sealing materials is that they age easily and need to be replaced regularly.
Vacuum pump mounting bracket: used to fix the vacuum pump to ensure its stability and safety.
The above are some common vacuum pump accessories. Different types of vacuum pumps may require different accessories.
The above are some common vacuum pump accessories. Different types of vacuum pumps may require different accessories.
The working principle of an oil-free vacuum pump is the same as that of a general positive displacement pump, and it is composed of stator, rotor, rotary vane, cylinder, motor and other main parts. The rotor with rotary vanes is installed eccentrically in the fixed cylinder. When the rotor rotates at high speed, the four radially sliding vanes in the rotor slot divide the pump chamber into four working chambers. Due to the centrifugal force, the rotary vanes are closely attached to the The cylinder wall separates the stator's inlet and outlet, and operates over and over again to change its volume. The inhaled gas is discharged from the exhaust port, thereby achieving the purpose of air extraction.
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