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Brief introduction to working principle of air compressor diaphragm pump


Diaphragm pump is a more special form of volume pump. I […]

Diaphragm pump is a more special form of volume pump. It relies on a diaphragm to move back and forth to change the studio volume to inhale and discharge liquid.
Pneumatic diaphragm pump mainly by the transmission part and diaphragm head two major components. Drive part is to drive the diaphragm back to encourage the drive mechanism, which has the form of transmission of mechanical transmission, hydraulic transmission and pneumatic transmission. One of the more widely used is the hydraulic drive. The working part of the diaphragm pump is mainly composed of a crank connecting rod mechanism, a plunger, a cylinder, a diaphragm, a pump body, a suction valve and a discharge valve, wherein a driving mechanism composed of a crank rod, a plunger and a liquid cylinder is connected with a reciprocating plunger Pumps are very similar.
When the diaphragm pump is working, the crank and rod mechanism drives the plunger to reciprocate under the driving of the motor. The movement of the plunger is transmitted to the diaphragm through the working fluid (usually oil) in the cylinder so that the diaphragm moves back and forth.
Pneumatic diaphragm pump cylinder head mainly by a diaphragm will be transported liquid and working fluid separately, when the diaphragm to the transmission side of the movement, the pump cylinder negative pressure and suction fluid, when the diaphragm to the other side of the movement , The liquid is discharged. The liquid being delivered is separated from the working fluid by the diaphragm in the pump cylinder and contacts only the pump cylinder, the suction valve, the discharge valve, and the diaphragm inside the pump without touching the plunger and the sealing device, so that the column Plug and other important parts completely in the oil medium work in good working condition.
Diaphragm to have good flexibility, but also have good corrosion resistance, usually made of PTFE, rubber and other materials. Diaphragm with mesh on both sides of the bottom of the pot-shaped parts in order to prevent excessive local deformation of the diaphragm set, commonly known as the diaphragm limiter. Pneumatic diaphragm pump sealing performance is better, can easily achieve leak-free operation, can be used to transport acid, alkali, salt and other corrosive liquids and high viscosity liquid.