Reciprocating pump with fluid source power control switching single plunger

Abstract

The invention relates to a reciprocating pump with a fluid source power control switching single plunger, comprising a pump body with a pump body cavity for sealing and matching with the pump piston, and sealing and matching with the inner edge of the pump body cavity to divide the pump body cavity into a first pump body cavity and the pump piston of the second pump body cavity, the first pump body cover and the second pump body cover that are combined and sealed with the pump body at the first end and the second end of the pump body, and the center of the first or second pump body cover of the pump body There is a piston rod through hole, the piston rod is sealed with the piston rod through hole and is fixedly connected with the corresponding end of the piston. Therefore, no elastic member is needed to realize the switching of the switching rod during the working process. The switching power of the switching rod is determined by The fluid is directly supplied, and there are no elastic parts during operation. Even at high frequencies, there will be no fatigue damage to the components, and it has a long service life.

Description

technical field [0001] The invention relates to a hydraulic reciprocating pump, in particular to a reciprocating pump that is driven by pressure fluid and outputs reciprocating power and is not easily damaged. Background technique [0002] In many occasions where stable power is required, various fluid pumps are often seen. Here, the fluid pump uses various high-pressure liquids or gases to drive the movement of the moving components in the pump to output stable and reliable power. The fluid reciprocating pump includes rotating and Reciprocating motion and other methods, the common structure of the current reciprocating pump includes a pump body similar to a piston structure and a piston rod as a movable power member, and two through holes for fluid in and out are provided at both ends of the pump body. The through hole is connected to the external high-pressure fluid source through a fluid flow direction switching device used to control the inlet and outlet of the two throu...

AI Technical Summary

Problems solved by technology

[0002] In many occasions where stable power needs to be provided, various fluid pumps are often seen. Here, the fluid pump uses various high-pressure liquids or gases to drive the moving components in the pump to move and output stable and reliable power. The fluid reciprocating pump includes rotation and Reciprocating motion, etc., the common structure of the current reciprocating pump includes a pump body similar to a piston structure and a piston rod as a movable power part, and two through holes for fluid in and out are provided at both ends of the pump body. The through hole is connected and conducted with the external high-pressure fluid source through a fluid flow switching device used to control the inflow and outflow of the two through holes. The hole enters or discharges, thereby pushing the piston inside the pump body to move back and forth to achieve the purpose of outputting stable and reliable reciprocating motion. At present, the common reciprocating pump uses the fluid flow switching device because the spring is used as the internal control part. Elastic return force source, the spring will be continuously compressed to store energy or recover freely after being released, because the frequency of reciprocating motion of this reciprocating pump is relatively high, especially for reciprocating pumps driven by high-pressure gas, the spring is compressed and returned The frequency of the spring should be synchronized with the movement frequency of the pump rod of the reciprocating pump. Working at such a high frequency will easily cause the spring to fatigue too quickly, and will soon reach the fatigue limit of the spring, causing the fluid flow direction switching device to fail quickly. According to the current tests, if the fluid pumps with this structure on the market continue to work, the working life of the new pumps will often last for a short time when they are used continuously. The working life of the entire fluid pump is limited, and it is necessary to prepare multiple spare fluid pumps, which will not only affect the production efficiency, but also greatly increase the cost of the user's use

Images