A pneumatic reciprocating drive diaphragm pump

Abstract

The invention provides a pneumatic reciprocating driving diaphragm pump. The pneumatic reciprocating driving diaphragm pump comprises a pneumatic reciprocating device, a pump body, an exhaust valve and an alternative air distribution mechanism, wherein the pneumatic reciprocating device comprises a mounting rack, a reciprocating driving air cylinder and two driven air cylinders, the two driven aircylinders are respectively connected with two ends of a reciprocating rod, the driven air cylinders comprise second cylinder bodies which are fixedly connected with the mounting rack and provided with openings in the two ends, a sealed air chamber is formed between a driven piston and a sealing cover, a connecting rod which is used for connecting the driven piston and the reciprocating rod is coaxially and fixedly arranged therebetween, the connecting rod movably passes through an air leakage cover, an air distribution valve is used for distributing air to a left air chamber / right air chamber, the pump body comprises a first pump case and a second pump case which are buckled, as well as a diaphragm piece, a first cavity is formed between the diaphragm piece and the first pump case, the first cavity is connected with the sealed air chamber, a second cavity is formed between the diaphragm piece and the second pump case, the second cavity forms a working chamber, and the diaphragm pieceis flexibly and pneumatically driven through the reciprocating sliding of the driven piston.

Description

technical field [0001] The invention relates to a diaphragm pump, in particular to a pneumatic reciprocating drive diaphragm pump. Background technique [0002] Diaphragm pump has been widely used since its inception. It relies on the agitation of a diaphragm back and forth to change the volume of the working chamber to inhale and discharge liquid. The pneumatic diaphragm pump is mainly composed of two parts: the transmission part and the diaphragm cylinder head. The transmission part is The driving mechanism that drives the diaphragm back and forth. Its transmission forms include mechanical transmission, hydraulic transmission, and pneumatic transmission. Among them, hydraulic transmission is widely used. The working part of the diaphragm pump is mainly composed of crank linkage mechanism, plunger, and hydraulic cylinder. , diaphragm, pump body, suction valve and discharge valve, etc., the existing diaphragm pump also has certain defects, such as complex structure and princ...

AI Technical Summary

Problems solved by technology

[0002] Diaphragm pump has been widely used since its inception. It relies on the agitation of a diaphragm back and forth to change the volume of the working chamber to inhale and discharge liquid. The pneumatic diaphragm pump is mainly composed of two parts: the transmission part and the diaphragm cylinder head. The transmission part is The driving mechanism that drives the diaphragm back and forth. Its transmission forms include mechanical transmission, hydraulic transmission, and pneumatic transmission. Among them, hydraulic transmission is widely used. The working part of the diaphragm pump is mainly composed of crank linkage mechanism, plunger, and hydraulic cylinder. , diaphragm, pump body, suction valve and discharge valve, etc., the existing diaphragm pump also has certain defects, such as complex structure and principle, large loss, low transmission efficiency, and easy damage of diaphragm, etc. For this reason, the inventors Design a pneumatic reciprocating drive diaphragm pump with ingenious structure, simple principle, high transmission efficiency, and flexible agitation of the diaphragm by compressed air

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