Principle of double rotary vane vacuum pump and the matters needing attention

there are many kinds of vacuum pump. When you choose again, I don't know whether you choose the principle and the matters needing attention of each pump. Then small constant will introduce the principle of bipolar rotary vane vacuum pumps and precautions:

how bipolar rotary vane vacuum pump work?

a bipolar rotary vane vacuum pump made of black metal is relatively accurate. The pump operation is interlinked, therefore not suitable for removing oxygen, toxic, explosive, black metal etching. It cannot be used to react with vacuum oil of various gas compressor and pump. If there is one with a gas ballast water pump, you can dismantle condensable body somewhere. Refers to the pumping vacuum residual gas pressure in the container. The partial pressure is our factory standard. Total pressure is secondary standard. Thermocouple measuring the total pressure of various kinds of steam and permanent gases. Permanent Mehs flowmeter can measure the partial pressure of the gas, so the second different values in the table.

a bipolar rotary vane vacuum pump is mainly composed of pump body, rotor, the rotor blades, end cover, a spring, etc. Rotor eccentric installed in rotary vane pump cavity, the inner surface of the outer periphery of the rotor and the pump cavity tangent ( There is little gap between) , two spring loaded rotor blade is decorated in the rotor slot stator were split into two studio ( High low studio and studio) 。 Bipolar rotary vane vacuum pump rotates, make the rotor blades to keep in touch with the pump chamber at the top of the wall. Centrifugal force and the spring tension as well as the rotation of the rotor drives the rotor blades sliding along the pump chamber wall, make the advanced studio volume suction periodically, and lower studio reduce periodically to compressed gases, and is the exhaust valve exhaust gas and oil pressure to push to take advantage of the vacuum.

when the suction pressure is high ( For example, from the atmospheric pressure) When the gas is compressed in high pressure chamber, the rapid increase of pressure of compressed gas directly from the auxiliary exhaust valve discharge, the other part is in compression and through the partition. Interstage channel into the lower chamber and compressed again and is discharged from the lower exhaust valve. At this point, the high and low room runs out at the same time; When the suction pressure is low, For example, in the pump running after a period of time) Advance, gas from the suction to enter. Produced by gas compression in a high-pressure chamber pressure is not enough to level through channels between the auxiliary exhaust valve directly into low studio, and compressed again and is discharged from the discharge valve.

considerations of bipolar rotary vane vacuum pump

1. Available in 5 ~ 40 ℃ environment temperature, inlet pressure under the condition of less than 1330 pa run continuously for a long time.

2。 If installed air device, can get rid of a certain amount of condensable gas, but is not suitable for removal of oxygen. Oxygen is too high, toxic, explosive, has corrosive to metal, chemical is not suitable for oil pump. Response and cannot be used as a gas pump containing particles of dust.

3。 Atmospheric pressure of inlet pressure to 6000 pa continuous working hours must not exceed 3 minutes, lest damage because of fuel injection or bad lubrication pump.

4。 Oil level should be located in the center of the mimeograph machine. If the oil level is too high, will lead to the oil. If the oil level is low, may be lead to bad lubrication. Operated by pump oil level. Best to replace vacuum pump oil pump run time. Is conducive to change, the impurity in the pump cavity will drain as much as possible.

these are the principle of bipolar rotary vane vacuum pumps and matters needing attention in detail. When you've finished do you find it useful? If you want to know more information about the vacuum pump, please pay attention to constant to mechanical and electrical vacuum pump factory site!

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