A New Spool Mechanism Based on Gate Valve

Abstract

The invention relates to the technical field of pipeline valves, and discloses a novel valve core mechanism based on a gate valve. The middle part of the hand wheel is movably sleeved with a valve stem, and the inner cavity of the valve body is provided with a valve cavity. The invention rotates the hand wheel to make the valve stem drive the gate to move downward, and after the gate moves downward for a certain distance, the lower end of the valve stem presses down on the movable block, so that the fluid material in the connecting pipe at the lower end of the movable block is pressed to seal The joint between the sleeve and the sealing tube makes the sealing tube move to the gate under the push of the fluid material, and when the center of the gate and the center of the inlet are at the same level, the sealing tube contacts the gate, and through the sealing of the sealing tube The ring seals the material inlet, which ensures the sealing performance of the gate valve when it is fully closed, and avoids the problem of gate wear when the traditional gate valve is opened and closed, and improves the working life of the gate valve.

Description

technical field [0001] The invention relates to the technical field of pipeline valves, in particular to a novel valve core mechanism based on gate valves. Background technique [0002] Gate valve is a device used for opening and closing of pipelines. Gate valves only have two states of fully open and fully closed, and cannot be used for adjustment and throttling of pipelines. Traditional gate valves are sealed by contacting the valve seat with the gate plate. Usually, the sealing surface will be surfacing. Metal materials are used to increase the wear resistance of the gate. There are two types of gate, rigid gate and elastic gate. According to the difference of the gate, the gate valve is divided into two types: rigid gate valve and elastic gate valve. It is a rising stem gate valve and a dark stem gate valve. [0003] By turning the handwheel of the traditional gate valve, the valve stem drives the gate plate to move up and down, so that the gate valve enters two states ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies in the use of the existing gate valve proposed in the background technology, the present invention provides a new valve core mechanism based on the gate valve, which has the advantages of high sealing performance and no jamming, and solves the problems raised in the above background technology. The problem

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