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Wear-resistant gate valve long in service life

A long-life gate valve technology, applied in the field of wear-resistant gate valves, can solve problems such as slippery wires, and achieve the effect of avoiding excessive rotation and aggravated loss

Pending Publication Date: 2021-10-29
TIANJIN QICHANG VALVE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a wear-resistant gate valve with a long service life, so as to solve the problem that the threaded joints of some gate valves existing in the market are prone to slipping during long-term use in the background technology

Method used

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  • Wear-resistant gate valve long in service life
  • Wear-resistant gate valve long in service life
  • Wear-resistant gate valve long in service life

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Embodiment Construction

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0018] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or Elements must have certain orie...

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Abstract

The invention discloses a wear-resistant gate valve long in service life, and relates to the technical field of gate valves. The wear-resistant gate valve comprises a valve body, the top of the valve body is in lap joint with a valve cover, the valve body and the valve cover are fixedly connected through nuts, a positioning column is welded in a circle center through opening formed at one side of the top of the valve cover, and a positioning through opening is formed at the top of the positioning column. In the using process, a spiral ring rotates in the same direction in a spiral cavity in the rotating process of a valve rod, the valve rod makes contact with a limiting strip in the rotating process of the spiral ring and pushes the limiting strip in the rotating process of the valve rod, after the limiting strip is stressed, movement in a spiral cavity is achieved by means of the limiting cavity, pressure is applied to a reset spring in the process to enable the reset spring to be in a compressed state, at the moment, the damping feeling caused by the reset spring prompts a user that the spiral ring rotates to be close to the limit state to prevent continuous force applying, and therefore, the conditions of thread slipping and the like in a long-term use process due to excessive rotation of the spiral ring are avoided.

Description

technical field [0001] The invention relates to the technical field of gate valves, in particular to a wear-resistant gate valve with long service life. Background technique [0002] The existing gate valve mainly includes a valve body, a valve cover, a valve stem, a handle, a gate plate and a valve seat arranged in the valve body. The valve body is provided with a flow channel for fluid to flow through. A gate valve (application number: 2020217426197 ) proposed a gate valve with high sealing degree and difficult to leak to adapt to the influence of high impact on the sealing performance of the gate valve, but it completely relies on the auxiliary operation of the threaded connection between the bonnet and the valve stem during use, and in In the long-term process, due to factors such as excessive force, it is easy to cause excessive thread rotation and problems such as thread slippage, which will affect normal use. Contents of the invention [0003] The purpose of the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K3/30F16K37/00
CPCF16K3/30F16K37/0008
Inventor 赵树起范亚荣
Owner TIANJIN QICHANG VALVE MFG
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