Addtime: 2020-07-18 Browse times: 2148
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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