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a gate valve

A technology of gate valves and rams, which is applied in the field of pipeline valves, can solve problems such as large operating force and difficulty in closing, and achieve the effect of saving labor and improving convenience in opening and closing

Active Publication Date: 2021-10-19
TEJI VALVE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The valve stem of the gate valve in the prior art is only subjected to the upward force of the medium in the pipeline. When the pressure in the pipeline is relatively high, the pressure in the pipeline acts on the valve stem, which produces a very large upward force on the valve stem. A large operating force is required to close the valve plate, making it difficult to close

Method used

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Embodiment Construction

[0014] 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. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0015] It should be noted that when a component is said to be "mounted on" another component, it may be directly on the other component or there may be an intervening component. When a component is said to be "set on" another component, it may be set directly on the other component or there may be an intervening component at the same time. When a component is said to be "fixed" to another component, it may be directly fixed to the other component or there may ...

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Abstract

The invention relates to a gate valve, comprising: a valve body with an inlet flow channel and an outlet flow channel; a gate plate slidingly arranged in the valve body, and the gate plate can block the inlet flow channel and the outlet flow channel; The valve stem that is rotatably connected to the upper end of the gate plate is threadedly connected with the valve body. By rotating the valve stem, the gate plate can be driven to move in the vertical direction, thereby controlling the on-off of the gate valve. The valve stem The upper part is fixedly connected with a balance valve sleeve. By keeping the force of the medium acting on the balance valve sleeve and the gate plate in a balanced state, the medium under high pressure will not produce great resistance to the opening and closing of the gate plate, so the gate plate will open. and off more easily.

Description

technical field [0001] The invention relates to the technical field of pipeline valves, in particular to a gate valve. Background technique [0002] Gate valve is currently the most important type of valve, which is widely used in the circulation and cut-off of liquid, gas, dust and other media. Usually, the gate valve includes a valve body, the lower part of the valve body has an inlet and an outlet, and the left end of the inlet and the right end of the outlet both have sealing surfaces, and a valve plate that can move up and down and not rotate is provided between the two sealing surfaces. . At the same time, a valve stem is connected to the top of the valve plate, and a handle is connected to the top of the valve stem through a screw nut mechanism. After the handle is rotated, the screw nut mechanism drives the valve stem to move up and down, and then the valve plate moves up and down to seal or open the two sealing surfaces, finally forming the connection or cut-off o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K39/04F16K3/02F16K3/314F16K27/04
CPCF16K3/0209F16K3/314F16K27/044F16K39/04
Inventor 武芳李辉洪德朋
Owner TEJI VALVE GRP
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