Guide cylinder valve with self-repair function

Abstract

The invention provides a guide cylinder valve with self-repair function. The guide cylinder valve comprises parallel first and second side walls and a third side wall arranged therebetween, wherein the first side wall, the second side wall and the third side wall form a valve cavity; a feed port and a discharge port are respectively and oppositely arranged on the first side wall and the second side wall; a valve rod passes through the first side wall; the valve cavity is internally provided with a first valve plate and a second valve plate; a guide cylinder used for communicating the feed port and the discharge port and an elastic pressing device are arranged between the first valve plate and the second valve plate; a swing arm is fixedly connected between the guide cylinder and the valve rod and drives the guide cylinder to swing back and forth with the valve rod serving as the axis; and the elastic pressing device presses the first valve plate and the second valve plate on the inner surfaces of the first side wall and the second side wall respectively. According to the guide cylinder valve with self-repair function in the invention, as flowing material passes along the guide cylinder, the corrosion and damage to components in the valve cavity can be avoided, and the service life of the guide cylinder valve with self-repair function is improved.

Description

technical field [0001] The invention relates to the technical field of valve structures, in particular to a guide cylinder valve with self-repairing function for cutting off or connecting medium in pipelines. Background technique [0002] Quarter-turn valve is a type of valve that opens and closes or controls flow through the rotary motion of the spool. [0003] The quarter-turn valve in the prior art includes a valve body with a cavity inside, respectively corresponding to the inlet and outlet arranged on two opposite side walls of the valve body, and a valve core arranged in the cavity of the valve body; wherein , the valve core includes two valve plates and a pressing device fixedly connected between the valve plates, and is fixedly connected with the valve stem vertically passing through the side wall of the valve body through the connecting rod; thus, the pressing device presses the two valve plates Leaning on the side wall surface of the valve body with inlet and outl...

AI Technical Summary

Problems solved by technology

[0004] However, when the quarter-turn valve with such an open structure in the prior art is in the open state, the flowing material will directly flow into the cavity in the valve body from the inlet and then flow out from the outlet. Corrosion occurs, and the material entering the cavity of the valve body is easy to stay and accumulate in the cavity of the valve body, thereby hindering the normal movement of the valve core. Excessive resistance may even lead to deformation and failure of the swing arm or valve plate On the other hand, the flowing material is directly in contact with the side wall of the valve body and the compression device in the cavity of the valve body, and the fixed impurities in it can easily enter the spring gap in the compression device, so that the spring cannot work normally and loses the pressure on the valve plate. The compression and sealing effect of the rotary valve reduces the sealing performance of the quarter-turn valve until it fails.

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