Check valve with protection structure for valve clack

Abstract

The invention discloses a check valve with a protection structure for a valve clack. The check valve comprises a valve body, the valve clack, a valve cover and a compression spring, the valve cover is arranged in the interior of the top end of the valve body, a wear-resisting structure is arranged on the outer side of the valve clack and comprises sliding rails, a ceramic shell, protruding blocks and sliding grooves, the protruding blocks are fixed to the outer side of the valve clack, the ceramic shell is fixedly arranged on the outer sides of the protruding blocks, sliding grooves are formed in the interiors of the two sides of the ceramic shell, and sliding rails are arranged in the interiors of the sliding grooves in an inserted mode. According to the check valve with the protection structure for the valve clack, friction loss of the valve clack is replaced through contact of the ceramic shell and the inner wall of the valve body, meanwhile, the abrasion resistance of the ceramic shell is better than that of the valve clack, the service life of the valve clack is prolonged, the sliding rails and the sliding grooves cooperate with each other, limiting is carried out on the movement mode of the valve clack, acceleration loss due to rotating friction of the valve clack is prevented, and therefore, the wear-resistant function of the device is achieved, and protection of the valve clack is achieved.

Description

technical field [0001] The invention relates to the technical field of liquid pipelines, in particular to a check valve with a protection structure for a valve disc. Background technique [0002] The check valve is a kind of automatic opening and closing valve, which can automatically open and close the valve according to the flow direction of the liquid in the pipeline, so that the pipeline liquid can only flow in one direction, and prevent the backflow of high-pressure liquid from causing safety hazards. It is widely used in chemical production, Food processing and other fields, but there are many problems and defects in the existing check valve; [0003] The traditional check valve has the problem that the disc is easy to wear during use. When the device is opened and closed, it will float up and down under the influence of water pressure, causing the disc and the valve body to be easily damaged due to long-term friction, which makes the device less practical. weak. Co...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a check valve with a protective structure for the valve clack, so as to solve the problem that the valve clack is easy to wear and tear in the above-mentioned background technology

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