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Gate valve structure

A gate valve and valve body technology, applied in the field of gate valve structure, can solve the problems of high wear resistance of the sealing surface and restrict the development of the gate valve, and achieve the effect of reducing flow loss and height

Inactive Publication Date: 2009-11-11
GUANGDONG LIANSU TECH INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, whether it is a hard seal or a soft seal, the wear resistance of the sealing surface and its high height have always been two obstacles that limit the development of gate valves.

Method used

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  • Gate valve structure
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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] Structural schematic diagram of the present invention is attached figure 1 , attached Figure 5 shown, with figure 1 It is a cross-sectional view with the center line of the water inlet pipe and the water outlet pipe as a curve, with Figure 5 It is a sectional view in which the center line of the water inlet pipe and the water outlet pipe is a straight line. The present invention includes a valve body 1, a water inlet and a water outlet are arranged on both sides of the valve body, and a water inlet pipe 4 and a water outlet pipe 5 connected to the water inlet and the water outlet. The water pipe 4 and the water outlet pipe 5 stop at the water inlet pipe sealing seat 2 and the water outlet pipe sealing seat 2 respectively inside the valve body. The water inlet pipe sealing seat 2 and the water outlet pipe sealing seat 2 have the same structure and are arrange...

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Abstract

The invention provides a gate valve structure, which comprises a valve body, a sealing seat and a valve plate, wherein a water inlet pipe and a water outlet pipe are arranged on the valve body; the water inlet pipe and the water outlet pipe are extended towards the inside of the valve body to the sealing seat from a water inlet and a water outlet on the valve body respectively; the sealing seat and the valve plate are in a fit wedge-shaped structure; and the upper surface of the valve body is gradually concave downwards from the water inlet and the water outlet to the center respectively. The structure effectively reduces the height of a whole valve, and further reduces the height of the valve particularly when the centerlines of the water inlet pipe and the water outlet pipe of a flow channel are concave-downward curves. In addition, because the height of a square, a rectangle or a trapezoid is less than that of a circle with the same area, the friction formation of sealing surfaces is also reduced so as to protect the sealing surfaces.

Description

technical field [0001] The invention belongs to the field of gate valve structure. technical background [0002] Among various types of valves, gate valves occupy a larger market share. Especially among the valves used for cutting, the gate valve has the advantages of small flow resistance, reliable sealing performance and small switching torque, and is widely used in various fields such as petroleum, chemical industry, metallurgy, power station, municipal pipe network, water supply and drainage construction, and national defense military industry. . [0003] Gate valves have been used for the longest time and are still widely used in countries all over the world, especially valves below DN300mm still occupy a dominant position in valves. Among them, the wedge gate valve is widely used in the world. Its characteristic is that the pressure difference between the front and rear of the valve plate forces the valve plate to press on the valve seat on the outlet side, and has g...

Claims

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Application Information

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IPC IPC(8): F16K3/12F16K3/30F16K27/04
Inventor 杨卫杨继跃黄虹宾
Owner GUANGDONG LIANSU TECH INDAL