The method of rotary vane vacuum pump troubleshooting | considerations - rotary vane vacuum pump operation

rotary vane vacuum pumps actual operations of the common problems

rotary vane vacuum pump motor rotor with certain eccentricity installed in the pump body and pump stationary surface near the body surface, the motor rotor tank is equipped with two solutions ( Or 2) Rotary vane, when the motor rotor rotating rotary-vane can drag along its axial groove reciprocating and touch and the cavity in the pump body from beginning to end, the rotary vane with motor rotor rotation, the mechanical pump cavity can be divided into several variability capacity. In the actual operation of the rotary vane vacuum pumps to pay more attention to the following matters:

1, the inquiry of oil, to stop the pump when the drops of oil to oil gauge management center is advisable. Low oil sealing effect, to vent can not harm degree of vacuum. Too high, can cause air start pump. Run time, the rise in oil has certain belongs to normal status. Oil select request types of cleaning, vacuum pump oil from the oil inlet added. After the oil supply, should be spinning oil plug. Oil should be after, in case of dirt into the block the inlet.

2, can be in all through the air or vacuum pump starting next time, relay pump such as loading, should with the pump and the actual operation.

3, working at high temperature, oil temperature rise, lower viscosity, saturation vapour pressure will expand, can cause has certain lower limit vacuum pump, very of the gas pressure is measured with thermocouple. Such as enhance natural ventilation heat pipe cooling, or improve pump features, ultimate vacuum pump improvement can be achieved.

4, check the mechanical pump the limits of the vacuum pump with narrow type liquid silver vacuum gauge for standards, such as the meter by adequate drainage efficacy, achieve smooth pump temperature, pump inlet and immediate access, run 30 minutes, will be limit vacuum pump. Total pressure gauge measurement and the values of the oil pump and the vacuum gauge, gauge deviation, deviation and sometimes will be very big, only for reference.

5, such as air humidity is higher, or by extraction contains more condensable vapors, access is pumped vessels, after appropriate open gas ballast valve, fitness 20 ~ 40 minutes later turn off the gas ballast valve. Stop before the pump, valve can KaiQi town full of thirty minutes of exercise, in order to increase the service life of the pump.

rotary vane vacuum pump failure to solve the way

rotary vane vacuum pump in operation, and if the actual operation is not good, often appear fault, such as rotary vane vacuum pump vacuum degree is reduced, oil pump, smoking, skeleton seal oil leakage, noise and other conditions, and vacuum pump oil emulsion pump and so on. One thousand appear this kind of situation, the first without anxiety, after shutdown on the basis of fault rule out one by one. Here introduces several troubleshooting.

a smoking, rotary vane vacuum pump and oil pump: refer to in the operation of the rotary vane vacuum pump in the outlet smoke or pump.

failure 1, smoking, if you have any smoking is soon began to pump running conditions, it belongs to normal condition. If long-term smoking in is abnormal.

eliminate way: smoke indicates that the air inlet of the pump, pipe, gate valve, vessel must have the status of the maintenance key is caused by leakage. Check the leakage area and resolved, smoking will be finished.

2, oil pump failure, shows that inlet outside there are a lot of leakage, and is exposed to the air inlets.

eliminate way: shut the running pump inlet of the pump, if you don't oil pump, indicate leakage; Exhaust valve damage, check the exhaust valve whether have damage, moved around on the exhaust valve.

2, rotary vane vacuum pump noise: here refers to the noise of the pump.

failure 1, knocking, rotary vane pump operation is not regular noise issues, like metal materials on the sound of metal material. It is a rotary vane in tapping noise from the pump housing. This kind of situation is matching between the rotary vane play yellow or fold or pop up invalid.

eliminate method: remove the pump casing inspection rotary vane play yellow is destroyed. Changing a good playing the yellow.

2, exhaust valve noise fault, mainly is the exhaust valve of the pump damage.

ruled out ways: changing a good exhaust valve.

three, rotary vane vacuum pump vacuum lower: refers to the current measure of rotary vane vacuum pump vacuum than original indexes or before the application of the vacuum degree is low. Lead to the low vacuum degree has a lot of, because of here described in detail a few class key.

1, the fault models and the original is not the same as the vacuum pump oil. Because different types of vacuum pump oil, saturated vapour pressure is different, the result will be different.

eliminate way: on the basis of the commodity specifications with appropriate vacuum pump oil.

2, by extraction of water vapor in the fault and residue composition is high vacuum pump oil emulsion rub off or dirty.

eliminate way: drainage of the vacuum pump oil inside the water pump, replace with kinds of oil pump, and set a filter to ensure by extraction of water vapor in the body and the residue is not into the pump.

failure 3, the extraction of body temperature will be too high.

eliminate way: reduce the extraction temperature, or add a relative heat exchanger.

4, pump in the fuel pipe blockage or not smooth, the water pump cavity did not maintain a certain amount of remaining oil.

eliminate way: query fuel pipe is unobstructed, and combined with the same kind of vacuum pump oil.

fault increases 5, a reciprocal space inside. It is a long-term vacuum body with soot, etc. , lead to spin and motor stator damage after the middle of space to expand.

eliminate way: query gap is too large, changing a new parts.

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