Working of Rubber Diaphragm Original Science
Time:
2024-07-10
Diaphragm pump is a special form of positive displacement pump. It relies on a rubber diaphragm to drum back and forth to change the volume of the working chamber to inhale and discharge the liquid. The pneumatic diaphragm pump is mainly composed of two parts: the transmission part and the diaphragm cylinder head. The transmission part is a driving mechanism that drives the diaphragm to drum back and forth. Its transmission forms include mechanical transmission, hydraulic transmission and pneumatic transmission, among which hydraulic transmission is widely used. The working part of the diaphragm pump is mainly composed of a crank connecting rod mechanism, a plunger, a hydraulic cylinder, a diaphragm, a pump body, a suction valve and a discharge valve. Among them, the driving mechanism composed of a crankshaft connecting rod, a plunger and a hydraulic cylinder is reciprocating. The plunger pump is very similar.
Diaphragm pump is a special form of positive displacement pump. It relies on a rubber diaphragm to drum back and forth to change the volume of the working chamber to inhale and discharge the liquid. The pneumatic diaphragm pump is mainly composed of two parts: the transmission part and the diaphragm cylinder head. The transmission part is a driving mechanism that drives the diaphragm to drum back and forth. Its transmission forms include mechanical transmission, hydraulic transmission and pneumatic transmission, among which hydraulic transmission is widely used. The working part of the diaphragm pump is mainly composed of a crank connecting rod mechanism, a plunger, a hydraulic cylinder, a diaphragm, a pump body, a suction valve and a discharge valve. Among them, the driving mechanism composed of a crankshaft connecting rod, a plunger and a hydraulic cylinder is reciprocating. The plunger pump is very similar.
When the diaphragm pump is working, the crank connecting rod mechanism is driven by the motor to drive the plunger to reciprocate. The movement of the plunger is transmitted to the diaphragm through the working liquid (usually oil) in the cylinder, causing the diaphragm to move back and forth.
The cylinder head part of the pneumatic diaphragm pump is mainly separated from the liquid and the working liquid by a diaphragm. When the diaphragm moves to the side of the transmission mechanism, the pump cylinder is working under negative pressure and sucks in the liquid. When the diaphragm moves to the other side, the liquid is discharged. The delivered liquid is separated from the working liquid by the diaphragm in the pump cylinder, and only contacts the pump cylinder, the suction valve, the discharge valve and the inner side of the diaphragm without contacting the plunger and the sealing device. Important parts such as the plunger work completely in the oil medium and are in good working condition.
Rubber diaphragm needs to have good elasticity, according to the different media contact at work, but also need better corrosion resistance, commonly used materials, PTFE, EPDM, NBR, NR, and other rubber materials.
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