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    Home > Active Ingredient News > Drugs Articles > Several common troubleshooting methods of rotary vane vacuum pump

    Several common troubleshooting methods of rotary vane vacuum pump

    • Last Update: 2013-08-23
    • Source: Internet
    • Author: User
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    The rotary vane vacuum pump is referred to as "rotary vane pump" Its models are as follows: 2x rotary vacuum pump, 2XZ rotary vacuum pump, XD rotary vacuum pump, Trp rotary vacuum pump The pumping speed ranges from 0.5 to 150 l / S (1 liter = 10-3 m3), the working pressure ranges from 1 × 105 to 1 pa, and the larger pumping speed ranges from 1 × 105 to 13 PA Limit pressure: 1 pa for single-stage vane pump and 6.5 × 10-2 PA for double-stage vane pump The pump is suitable for pumping dry or a small amount of condensable steam, not suitable for pumping gases with high oxygen content, explosive, corrosive, chemical effect on vacuum pump oil and a large number of solid particles In the vacuum system, the rotary vane pump can be used alone, and can also be used as the front pump of booster pump, diffusion pump, roots pump and other vacuum pumps In the operation of the vane pump, if the operation is not correct, most of the vane pump faults will occur For example, there will be emulsification of vacuum pump oil in the vane pump in case of vacuum degree drop, oil injection, smoke, oil leakage at the oil seal, noise, etc Once these situations occur, first of all, do not be nervous After the pump is stopped, remove one by one according to the fault performance Then I will introduce several common fault phenomena and troubleshooting methods I vacuum drop: it means that the measured vacuum is lower than that of the factory or before There are many reasons for the low vacuum Here is an example of several common causes of failure to do an introduction Fault 1 The brand of vacuum pump oil added this time is different from the original one Due to the different saturated vapor pressure, the results of vacuum pump oil of different brands will be different Troubleshooting: select the right vacuum pump oil according to the product model Fault 2 The content of water vapor and impurities in the extracted gas is too high, which causes the vacuum pump oil to be emulsified, discolored or dirty Troubleshooting: drain the vacuum pump oil in the pump, replace it with the same type of pump oil, and set up a filter to ensure that the water vapor and impurities in the pumped gas do not enter the pump Fault 3 The temperature of the extracted gas may be too high Elimination method: reduce the temperature of the extracted gas, or add a corresponding heat exchanger Fault 4 The oil circuit in the pump is blocked or not smooth, and the pump cavity does not maintain a certain amount of oil Troubleshooting: check whether the oil circuit is smooth, and add the same type of vacuum pump oil Fault 5 The clearance between internal parts becomes larger This is a long-term exhaust body containing dust and so on, which causes the gap between the rotor and the stator to increase after wear Troubleshooting: check whether the clearance is too large, and replace new parts 2 Excessive noise: This refers to the noise of the pump Fault 1 When the cylinder is knocked and the rotary vane pump is running, it makes an irregular sound, like the sound of metal hitting metal This is the sound of the spinner hitting the pump This situation is caused by the failure of the spring between the matched discs due to breakage, contraction or ejection Troubleshooting: disassemble the pump body and check whether the spiral spring is damaged Replace the spring Fault 2 The exhaust valve plate is noisy, mainly because the exhaust valve plate of the pump is damaged Troubleshooting: replace the exhaust valve plate 3 Smoke and fuel injection: refers to smoke or fuel injection at the exhaust port of rotary vane pump during operation Fault 1 Smoke If the pump just started to operate and smoke, it is a normal phenomenon It's not normal if you smoke for a long time Troubleshooting: smoke indicates that the air inlet of the pump, including pipes, valves and containers, is mainly caused by air leakage After checking for leaks and handling, the smoke will end Fault 2 Fuel injection indicates that there are a large number of leakage points outside the air inlet, or even the air inlet is exposed to the atmosphere Troubleshooting: seal the air inlet of the pump to make the pump run If there is no oil injection, it means there is a leakage point If the exhaust valve plate is damaged, check whether the exhaust valve plate is damaged and replace it with a new one.
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