Diaphragm quantitative pump action principle

(1) the use of diaphragm before and after the action of the diaphragm and the pump head changes between the ball valve up and down movement to form a vacuum adsorption and push phenomenon to achieve the purpose of liquid delivery.

① When the diaphragm is pulled backwards, the outlet ball valve falls tightly close to the ball seat ①, the inlet ball valve rises upward due to the vacuum generated between the pump diaphragm and the diaphragm after the diaphragm ②, and the liquid is sucked up.

②When the diaphragm is pushed forward, the inlet ball valve and the ball seat are airtight ④, so that the liquid will not pass, and the outlet is pushed forward by the diaphragm to open the ball valve ③, and the liquid is discharged
(2) by the above principle of action we can simply know the diaphragm, pump head, ball valve ball seat caused by any one of the factors of leakage can not achieve the purpose of delivery, or abnormal flow, usually resulting from the failure of the four main components for:
① ball seat and ball valve can not be airtight ② entrance, exit foreign body obstruction ③ diaphragm is damaged

Therefore, if the liquid is delivered abnormally, the handling in this respect should be resolved. The factors that cause the above situation are too many to mention, and the piping, fittings and operating conditions at that time can be judged

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