What are the causes of damage to the diaphragm of a miniature diaphragm pump?

Miniature diaphragm pump in the long-term use and operation process, due to the role of continuous alternating forces, the diaphragm is prone to damage and cracking, so what are the causes of diaphragm pump diaphragm damage? Come together to understand

1.the diaphragm chamber air is not clean, causing the gas volume to change with the propellant pressure, resulting in gas hammer, increased local forces on the diaphragm, and eventual diaphragm failure

2.Since the diaphragm chamber must have a certain volume, if the feed is not stable, the medium will separate in the pump, forming a void without material, leaving the pump empty, causing hammering, shock, and even cavitation. As a result, the diaphragm will not be able to withstand the variable stress, which will increase the frequency, resulting in fatigue damage or diaphragm rupture.

3.The medium contains 3 to 8 mm of stones or other large pieces of material, and the percentage of solids in the slurry exceeds 20% by mass. This leads to stuck valves, causing pressure fluctuations in the diaphragm pump. In addition, the inappropriate positioning of the valve assembly cone causes stabbing of the valve, resulting in an instantaneous increase in force on the diaphragm, causing rupture.

4.If the magnetic ring on the control rod is weak, the probe cannot detect the signal and cannot make up the oil discharge in time, causing the diaphragm side to rupture due to excessive force. The oil feed and oil discharge of the diaphragm chamber are controlled by the probe detecting the signal of the position of the control rod.

5.The support sleeve of the diaphragm control rod is obviously worn, causing the control rod to sink eccentrically, increasing the force on the diaphragm and easily pulling and cracking the diaphragm.

6.If there is a pressure difference inside the equipment, the pneumatic diaphragm pump will overpressure and the diaphragm will burst due to increased stress.

The above is the cause of damage to the diaphragm of the miniature diaphragm pump, more information about the welcome to contact us at any time