Three-ball diaphragm pump with composite shaft

Abstract

The invention discloses a three-ball diaphragm pump with a composite shaft. The diaphragm pump comprises a diaphragm pump body, diaphragms at the two sides, inclined covers at the outermost sides anda shaft rod, and the diaphragm pump body, the diaphragms and the inclined covers are fixedly connected at the center of the shaft rod; the shaft rod is a composite shaft rod and comprises an inner shaft and an outer shaft; the outer shaft is movably connected to the center of the diaphragm pump body and can slide on the inner shaft, and the portions, close to the inner shaft, of the two ends of the outer shaft are in sealed connection with the diaphragms; screw threads are arranged at the two ends of the inner shaft, the shaft rod is internally hollow, air outlets are formed in the outer endsof the diaphragms, and the inclined covers, the diaphragms and the diaphragm pump body are in sealed connection by screwing nuts and the screw threads; reversing valves are connected to the two ends of the inner shaft and are pneumatic reversing valves or electromagnetic valves. The three-ball diaphragm pump with the composite shaft is reasonable in structural design, a liquid outlet end is sealedby adopting a single ball, different from a traditional four-ball double-diaphragm pump, reversing sealing can be more conveniently conducted, the pulse is reduced, the steering valves can be connected with the exterior through the electromagnetic valves at the same time, and remote control is achieved.

Description

technical field [0001] The invention relates to the field of diaphragm pumps, in particular to a composite shaft three-ball diaphragm pump. Background technique [0002] Diaphragm pump, also known as control pump, is the main type of actuator. It accepts the control signal output by the modulation unit and uses power operation to change the fluid flow. When the diaphragm pump is used, it will be equipped with a valve body to control the flow of the liquid. flow direction. [0003] The traditional two-ball or four-ball diaphragm pumps are mostly two-ball diaphragm pumps, and four-ball diaphragm pumps are double-diaphragm pumps. The pulse generated by the movement of the sealing ball of the diaphragm pump is a stress factor that affects the function of the diaphragm pump. In the four-ball diaphragm pump, the four-ball diaphragm pump The generated pulse will inevitably affect the commutation of the double diaphragm pump. [0004] At the same time, the existing diaphragm pump ...

AI Technical Summary

Problems solved by technology

[0004] At the same time, the existing diaphragm pump adopts multi-point assembly, which is difficult to install and disassemble, and the outer side of the diaphragm is a liquid channel, and the inner side of the diaphragm is gas, so the reversing valve must be integrated on the diaphragm pump

Images