Valve sheet type check valve of liquid ring vacuum pump and liquid ring compressor

Abstract

The invention discloses a valve sheet type check valve of a liquid ring vacuum pump and a liquid ring compressor. The valve sheet type check valve of the liquid ring vacuum pump and the liquid ring compressor comprises a valve body, an annular valve sheet and a valve plate. The valve body comprises an annular shell and a circular bottom plate coaxially arranged in the shell; the outer ring of thebottom plate is connected to the inner wall of the shell in a sealed mode; a plurality of axial stand columns and a plurality of axial ventilation through holes are arranged on two concentric circleswith a small diameter and a large diameter on the inner side surface of the bottom plate at equal intervals respectively; the annular valve sheet is sleeved on the outer side of a circle defined by the stand columns; when the annular valve sheet is attached to the surface of the bottom plate on the outer side of the stand columns, airflow can be prevented from flowing through the ventilation through holes; the valve sheet is arranged at the ends of the stand columns, a large ventilation hole is arranged in the middle of the valve plate, and a plurality of small ventilation holes are arranged at equal intervals in a circle on the valve plate corresponding to the valve sheet; and the valve sheet is made of a non-metal material which is light in weight, not prone to deformation, resistant tocorrosion and softer than the valve body and the valve deck in texture. The valve sheet type check valve of the liquid ring vacuum pump and the liquid ring compressor has the advantages of being smallin opening and closing energy consumption, sensitive in opening and closing reaction, good in sealing effect, free of noise and the like.

Description

technical field [0001] The invention relates to a liquid ring vacuum pump and a valve plate check valve of a liquid ring compressor. The check valve can be used not only as a gas check valve at the inlet end of the liquid ring vacuum pump, but also as a gas check valve at the outlet end of the liquid ring compressor. A valve belongs to the technical field of a liquid ring vacuum pump and a check valve of a liquid ring compressor. Background technique [0002] At present, the check valves for liquid ring vacuum pumps and liquid ring compressors widely used in industry are spring check valves. The check valve is composed of a valve body, an inner block arranged on the inner side of the valve body, a valve, a hinge chain and a suspension ring arranged outside the valve body, and the valve and the inner block are connected by a hinge chain. The valve of the check valve is composed of two semicircles, and the hinge is composed of a chain plate, a rotating shaft and a spring, and...

AI Technical Summary

Problems solved by technology

The check valve has the following defects: 1. The air flow needs to overcome the elastic force of the spring to open the valve during work, and the air flow overcomes the elastic force of the spring to consume power, resulting in high energy consumption; 2. The spring will suffer from fatigue failure after long-term work, resulting in shutdown 3. When opening and closing the valve, there will be a large abnormal sound due to the collision of metal parts, and the noise is large

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