Reciprocating plunger pump

Abstract

The invention belongs to the technical field of reciprocating plunger pumps. The invention discloses a reciprocating type plunger pump. The pump comprises a shell, a piston cylinder, a first plunger and a piston. The shell is provided with a port P connected with an oil inlet pipe, and a port T1 and a port T2 which are connected with an oil outlet pipe. The piston cylinder is located in the shell,the piston is located in the piston cylinder, the piston can do axial reciprocating motion under an effect of high-pressure oil, the piston cylinder can do axial reciprocating motion relative to theshell under the effect of the high-pressure oil, two sides of the piston are alternately connected with the high-pressure oil, and automatic reversing reciprocating motion of the hydraulic cylinder isachieved. The reciprocating plunger pump can carry out automatic reversing reciprocating movement under driving of hydraulic pressure, is simple and compact in structure, low in manufacturing cost and high in integration level, can omit use of a reversing valve, does not need electric control, avoids unstable factors of electric appliances, can work for a long time, and is long in service life.

Description

technical field [0001] The invention belongs to the technical field of reciprocating pumps, and in particular relates to a reciprocating plunger pump. Background technique [0002] With the large-scale application of large-scale mechanical equipment, the use of hydraulic drive technology in the field of fluid compression application technology is becoming more and more mature. Among them, in the field of reciprocating plunger pump technology for compressing fluid, the traditional reciprocating plunger pump uses a crank connecting rod mechanism to realize the reciprocating movement of the piston in the cylinder to compress the fluid. The output pulse of the type plunger pump is large and unstable, and it is easy to get stuck under severe working conditions. [0003] In addition, in the current hydraulic reciprocating plunger pump, the reversing valve that realizes the reciprocating movement of the piston mostly uses an electromagnetic reversing valve and a displacement senso...

AI Technical Summary

Problems solved by technology

In this way, not only the commutation is unstable and unreliable, but also the control circuit part of the reversing device is controlled by a circuit board. Since the circuit board is a non-standard part, and it is difficult to manufacture and process, it is very difficult to repair after damage, which increases subsequent use and maintenance. cost

At the same time, if the existing reversing device is continuously energized for a long time, it is easy to damage small devices and cannot meet the requirements of long-term energization, which also affects the use efficiency to a certain extent

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