A multi-channel inlet check valve suitable for gas, liquid or gas-liquid mixed multiple media compression pumps

Abstract

The invention relates to a multi-flow-channel inlet check valve suitable for a compression pump for gas, liquid or gas-liquid mixed multiple media with a piston and an inlet valve seat being designed integrally. The multi-flow-channel inlet check valve comprises a piston body, a valve rod, a valve plate and a spring, wherein the piston body is of a split structure; a big annular cavity is formed in the piston body; N overflow channels are formed in the piston body and the valve plate; and the N overflow channels in the piston body are opened or closed synchronously and do not interfere each other. The piston body of the check valve has the functions of the piston and the inlet valve seat, perpendicular intersection of a hydraulic cylinder body inlet valve hole and a hydraulic cylinder hole of a traditional compression pump can be avoided, and the situation that stress is concentrated at the hole intersection under the action of alternating loads, and consequently a hydraulic cylinder body is broken and fails is avoided; the multi-flow-channel design is adopted, and the multi-flow-channel inlet check valve has the advantages of low hydraulic loss, high efficiency, low check valve opening height, small vibration noise, long service life and the like; and the piston body is of the split structure, the big annular cavity is formed in the piston body, thus, the weight of the piston body can be lowered, and the efficiency of the pump is improved advantageously.

Description

technical field [0001] The invention relates to an inlet check valve for a compression pump suitable for gas, liquid or multiple media mixed with gas and liquid, more specifically relates to a piston and inlet valve suitable for gas, liquid or multiple media mixed with gas and liquid. Imported one-way valve structure with integrated design of valve seat. Background technique [0002] The compression pump has the function of reciprocating pump to transport liquid medium, and the function of piston compressor to transport gaseous medium, and at the same time has the function of gas-liquid mixed pump to transport gas-liquid medium. Piston and inlet one-way valve are the key components of the fluid end of compression pumps suitable for gas, liquid or gas-liquid mixed media. The inlet check valve of the traditional compression pump liquid cylinder intersects the cylinder hole vertically. Under the action of alternating load, the pressure at the intersection of the holes is conce...

AI Technical Summary

Problems solved by technology

[0003] Traditional compression pump inlet check valve adopts single-channel or double-channel design, and the opening height of the valve and the flow rate of the valve gap are limited.

With the enlargement of the compression pump, the flow rate of the valve is getting larger and larger, and the design of single or double flow channel is adopted. The structural size of the valve is large, the lift of the valve is high, and the mass of the valve core is heavy, and the flow rate of the valve gap is large.

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