One-way valve for pump body

Abstract

The invention discloses a one-way valve for a pump body, and relates to the technical field of one-way valves. The one-way valve comprises a valve body, a valve element and an adjusting assembly. A fixing ring is fixed in the valve body, and a guiding sleeve is fixed to the inner wall of the fixing ring through four first support rods. The valve element comprises a guiding shell and a piston, wherein the guiding shell and the valve body are in sliding fit, and a spring is fixed to one inner wall of the guiding shell. The adjusting assembly comprises a sliding rod and a rotation rod, wherein the sliding rod and the guiding sleeve are in sliding fit. Eight teeth are fixed to one surface of the sliding rod. A spring cover is fixed to one end of the sliding rod through a second support rod, and one surface of the spring cover and one end of the spring are fixedly connected. The rotation rod is driven to rotate through rotation of a rotation ring, and the rotation rod drives a gear to rotate; and through cooperative usage of the gear and the teeth, the sliding rod is driven to slide along the guiding sleeve, accordingly, the distance between the piston and the spring cover is adjusted,and the problem that according to an existing one-way valve, the range of pressure intensity of the inflow end during dredging cannot be controlled is solved.

Description

technical field [0001] The invention belongs to the technical field of one-way valves, in particular to a one-way valve used in a pump body. Background technique [0002] The one-way valve is a fluid that can only flow along the water inlet, but the outlet medium cannot flow back. It is commonly known as a one-way valve. The one-way valve is also called a check valve or a check valve. It is used to prevent the reverse flow of compressed air in the pneumatic system. The check valve has two types: straight-through and right-angle. The straight-through check valve is installed on the pipeline with threaded connection, and the right-angle check valve has threaded connection, plate connection and flange. Connect three forms. [0003] When the traditional one-way valve is in use, the fluid input at one end is discharged from the other end. However, under the condition of constant pressure, the elastic force provided by the spring always ensures that the piston on the valve core b...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a one-way valve for the pump body. The rotating rod is driven to rotate by rotating the swivel ring, the rotating rod drives the gear to rotate, and the sliding rod is driven to slide along the guide sleeve through the cooperation of the gear and the teeth, thereby Adjust the distance between the piston and the spring cover, which solves the problem that the existing one-way valve cannot control the pressure range of the inflow end when dredging

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