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Gate valve

A technology of gate valves and rams, which is applied in the field of valves, can solve problems such as difficult processing, high friction, and short service life, and achieve the effects of prolonging service life, easy processing and production, and good sealing effect

Active Publication Date: 2013-07-03
BEIJING OTE CONTROL VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a gate valve, which is used to solve the problem that the existing gate valve is difficult to process during production, and due to structural defects, when opening and closing, there is a gap between the wedge-shaped surface of the gate plate and the wedge-shaped sealing surface of the valve seat. High friction, easy wear and short service life

Method used

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Embodiment Construction

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0041] Such as figure 2 with image 3 As shown, Embodiment 1 of the present invention provides a gate valve, including:

[0042] The valve seat 1 has a first sealing surface 2 and a second sealing surface 3;

[0043] The gate 4 used to cooperate with the valve seat 1 to open or close includes: a first gate 5; a second gate 6 connected to one surface of the first gate 5;

[0044] Used to control the gate 4 to enter the valve seat 1. The first...

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Abstract

The invention provides a gate valve for solving the problems that the sealing surface of the valve seat in the conventional gate valve is a wedge-shaped surface and is difficult to turn during production and the gate valve is easy to abrade and short in service life when being opened and closed due to high friction between the wedge-shaped surface of the gate valve and the wedge-shaped sealing surface of the valve seat. The gate valve comprises a valve seat, gate plates and a control device, wherein the valve seat is provided with a first sealing surface and a second sealing surface; the gate plates comprise a first gate plate and a second gate plate connected with the first gate plate; the control device is used for controlling the gate plates to enter the valve seat and the first gate plate and the second gate plate to splay at a distance so that the first gate plate is back to the surface of the second gate plate and is tightly matched with the first sealing surface, the second gate plate is back to the surface of the first gate plate and is tightly matched with the second sealing surface and the gate valve is closed, or controlling the gate plates to leave the valve seat and the first gate plate and the second gate plate to get close to each other so that the gate valve is opened; and the first sealing surface and the second sealing surface are perpendicular to the bottom of the valve seat and parallel to the gate plates. The gate valve is easy to produce and long in service life.

Description

Technical field [0001] The invention relates to the technical field of valves, in particular to a gate valve. Background technique [0002] Such as figure 1 As shown, the sealing surface of the valve seat 23 in the existing gate valve is usually a wedge-shaped surface 24, and the sealing surface 26 of the gate 25 is also a sealing surface that matches the wedge-shaped sealing surface of the valve seat 23. Not only is the wedge-shaped surface 24 in the production process In this way, the friction between the sealing surfaces is large when the gate 25 is raised or lowered, and long-term use results in poor sealing effect and short service life. In addition, the structure 27 between the two plates of the gate is unreasonable, and it is extremely easy to be rubbed during long-term use and collision, resulting in poor sealing effect. [0003] It can be seen that the existing gate valve is not easy to process during production, and due to structural defects, the friction between the wed...

Claims

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Application Information

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IPC IPC(8): F16K3/14F16K3/314
Inventor 徐海涛
Owner BEIJING OTE CONTROL VALVE
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