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Shengong vacuum water supply and drainage: water ring vacuum pump fault and solution

Addtime: 2020-07-18 Browse times: 2005

The common faults of water ring vacuum pump are low vacuum degree or stuck.


1. Stuck during test run or operation


Cause: serious scaling solution: dismantle and remove or use acid pickling


Cause: the packing gland is too tight. Solution: loosen the gland bolt


Cause: internal parts rust solution: pull the rotor and clean with oxalic acid


Cause: foreign matters jam pump rotor solution: wash with water and open for inspection


2. Motor short circuit or overload


Cause: winding short circuit solution: check the motor winding.


Cause: the working fluid flow is too high. Solution: adjust the water inlet valve to reduce the working fluid flow


Cause: the exhaust pressure is too high. Solution: reduce the exhaust pressure to the specified range


Cause: the liquid content in the inhaled gas is too high. Solution: install separator at the inlet or reduce the flow rate of working fluid


3. Low vacuum


Cause: the belt slip causes the speed to drop. Solution: tighten the belt


Cause: the water supply is insufficient or the temperature is too high. Solution: adjust the water supply and reduce the temperature of the working fluid


Cause: vacuum system leakage solution: check the stuffing box pipeline and the gap in the pump for leakage


Cause: the vacuum gauge shows incorrect solution: replace the vacuum gauge


Cause: valve plate falls off solution: replace valve plate


4. High vibration and noise


Cause: shaft alignment is not good solution: re alignment and locking


Cause: the foundation bolt is loose. Solution: tighten the anchor bolt


Cause: the flow rate of working fluid is too high. Solution: install orifice flowmeter to reduce the flow


Cause: the suction and exhaust pipe wall is too thin. Solution: use a thick tube


5. The bearing is heated


Cause: lack or excess of lubricating grease solution: improve lubrication conditions


Cause: improper bearing installation solution: adjust the bearing


Cause: the bearing is rusted and the raceway is scratched. Solution: replace the bearing with a new one


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