Troubleshooting of diaphragm vacuum pump in laboratory

Laboratory diaphragm vacuum pump is a high frequency vacuum equipment used in production After a long time of use, there will be some failures that need to be repaired Let's study the troubleshooting methods 1 Diaphragm damage the diaphragm of the laboratory diaphragm vacuum pump is driven by the air pressure to do high-speed movement of the two-way valve While doing high-speed movement, the diaphragm must also bear the impact of the medium, so it is particularly easy to damage Maintenance method: replace the diaphragm with a new one Once the diaphragm of the laboratory diaphragm vacuum pump is damaged, it is difficult for the diaphragm vacuum pump to reach the rated pressure Under the high-speed movement, the damage to the diaphragm will be more and more serious 2 The wear of the check valve is due to the impact of impurities or particles in the medium on the check valve when the medium is sucked into the pump housing, which reduces the smoothness of the check valve surface and damages the check valve, thus making the pressure and flow of the medium insufficient Maintenance method: for the wear of one-way valve, it can be solved in two ways: when the wear is not very serious, sand paper can be used to polish the surface of one-way valve to make the contact surface smooth and reduce the clearance between valve ball and valve seat; if the wear of one-way valve is severe, replace the one-way valve 3 The two-way valve is blocked The two-way valve moves back and forth under the blow of high-pressure gas When the high-pressure gas has impurities or is relatively wet, it is easy to block the two-way valve Maintenance method: if the two-way valve is blocked, we need to clean the two-way valve When cleaning the two-way valve, it needs to be careful Because the parts of the two-way valve are relatively small, unobtrusive and easy to fall, and the sealing requirements of the two-way valve are very high.