Vacuum pump manufacturers to introduce the principle of double rotary vane vacuum pumps and precautions _

there are many kinds of vacuum pump. I don't know whether you choose again chose principle and preventive measures of each pump. Next, let me introduce the principle of double rotary vane vacuum pumps and precautions:

double rotary vane vacuum pump working principle of

two-stage rotary-vane vacuum pump are made of black metal is relatively accurate. The entire pump operations are interconnected, so not suitable for removal of oxygen, toxic, explosive of black metal etching. It cannot be used as the vacuum oil has the chemical reactivity of various gas compressor and water pump. If your water pump with gas town, you can remove somewhere can condensate. Vacuum is a residual gas pressure in the container. The partial pressure is our factory standard. Total pressure is secondary standard. Thermocouple to measure the total pressure of various kinds of steam and permanent gases. Mace table can only measure the permanent gas partial pressure is very strong, so the second table of the values are different.

double rotary vane vacuum pump is mainly composed of pump body, rotor, vane, plate, springs, etc. Rotor eccentric installed in rotary vane pump cavity, the inner surface of the outer periphery of the rotor and the pump chamber tangent ( Small clearances between double) , double spring used with rotor. Placed in the rotor slot, with the stator can be divided into double studio ( High and low studio) 。 Rotates, double rotary vane rotary vane vacuum water pump and pump chamber at the top of the wall contact. Centrifugal force and spring tension and the rotation of the rotor driven rotating blade sliding along the inner wall of the pump housing, thus make senior studio periodically extended to the volume of suction, and the lower cavity compressed periodically to compressed gases, and is the exhaust valve exhaust gas and oil pressure to push for vacuum.

when the suction pressure is higher, For example, starting from the atmospheric pressure) , the gas is compressed in the high pressure chamber, the pressure rise rapidly, some partial pressure directly from the auxiliary exhaust discharge door, the other part is compressed and through the partition. Interstage channel into the lower chamber, and compressed again and is discharged from the lower part of the exhaust valve. At this time, high, low chamber and exhaust. When suction pressure is low, For example, in the pump after a job) Advance, gas from the suction to enter. Produced by compressed gas pressure in the high-pressure chamber to the auxiliary exhaust valve through the interstage channels directly into the studio, low and out of the lower exhaust valve compression side by side again.

double rotary vane vacuum pump note

1. In the environmental temperature 5 ~ 40 ° C, inlet pressure under the condition of less than 1330 pa run continuously for a long time.

2。 If a gas ballast installed equipment, you can remove a certain amount of condensable gas, but is not suitable for removal of oxygen. High oxygen, toxic, explosive, corrosive to metal, and the chemical is not applicable to pump oil. The reaction and gas containing dust particles cannot be used as a transfer pump.

3。 Atmospheric pressure inlet pressure of 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 in the center of the mimeograph machine. If the oil level is too high, will lead to refuel. If the oil level is low, will lead to bad lubrication. Operated by pump oil level. In the best replacement of vacuum pump oil pump run time. Is conducive to change, the impurity in the pump cavity will drain as much as possible.

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