In order to make the stainless steel pneumatic diaphragm pump have a stable pressure and flow, there is a buffer tank on the inlet and outlet pipe of the pump. The buffer tank should precharge a certain amount of pressure with nitrogen, and the precharge pressure should not be less than 30% of the maximum working pressure and 80% higher than the minimum working pressure. Although higher preloading pressure can produce better cushioning effect, when the pressure drops, it will cause pulsation and frequent impact on the bottom of the tank, resulting in the damage of metal internals.

When the working pressure is relatively large, it is only necessary to pre charge pressure to 30% to 35% of the maximum working pressure. The precharge pressure provided by the pump manufacturer is: the inlet pressure of the inlet buffer tank is 80% to 90% of the inlet pressure, and the pre pressure of the outlet buffer tank is 60% to 65% of the outlet pressure. In the actual diaphragm pump operation, the vibration of the inlet pipe of the pump is large, which indicates that the pre pressure of the inlet buffer tank is not suitable. According to the actual situation, when the pre pressure of the inlet buffer tank is lowered to 60% to 65% of the inlet pressure, the vibration is eliminated immediately, and the pump returns to normal working condition. Health level self-priming pump

Stainless steel pneumatic diaphragm pump during operation, due to leakage and other reasons the buffer tank pressure will gradually drop to a certain pressure, stainless steel pneumatic diaphragm pump looked unstable appeared accompanied by abnormal sound, the lower the pressure under the operation for a long time, always in a wide range of diaphragm volatile, easy to make diaphragm fatigue, reduce the service life of the diaphragm. In order to overcome this situation, it is necessary to press the buffer tank in operation. Decided to the buffer tank stamping run with load according to the stainless steel pneumatic diaphragm pump accumulated in normal production in the debugging process and experience, to achieve sufficient stability and pressure gauge pointer pressure mark of success, several tests have achieved very good results, to ensure the long-term safe operation of stainless steel pneumatic diaphragm pump.

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