Flat gate valve

A technology for flat gate valves and gates, applied in valve devices, sliding valves, mechanical equipment, etc., can solve problems such as scratched sealing surfaces, valve leakage, etc., and achieve the effects of reducing friction, increasing service life, and reducing operating force

Pending Publication Date: 2022-06-07
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Conventional tank root valves generally include flat gate valves and ball valves. However, few users choose ball valves due to the light weight of tank root valves, and because of low pressure sealing, flat gate valves have better sealing effect than conventional self-sealing valves, so tank root valves are generally selected. For light flat gate valves, the valve seat is generally made of non-metal to improve the sealing effect of the valve. However, the valve is always in contact with the sealing surface during the switching process, and impurities often scratch the sealing surface, causing the valve to leak.

Method used

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Embodiment Construction

[0026] Unless otherwise specified, the terms herein are understood according to the understanding of one of ordinary skill in the relevant art.

[0027] The direction or orientation terms such as axial, relative, bottom, bottom, etc. described herein are consistent with the corresponding directions or orientations in the drawings in the description. It should be noted that the directions or orientations in the drawings in the description are an example of the present invention. Equivalent rotations and exchanges made by those skilled in the art on the basis of the contents disclosed in the present invention are all within the protection scope of the present invention.

[0028] The combined thickness of the combined valve plate is the sum of the thickness between the board surface A and the board surface B of the power gate and the thickness between the board surface C and the board surface D of the auxiliary gate. The axial direction gradually becomes smaller, and the thicknes...

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Abstract

The invention discloses a flat gate valve. The flat gate plate comprises a valve body, a power gate plate and an auxiliary gate plate, the power gate plate and the auxiliary gate plate are wedge type gate plates, an actuator can provide forced sealing force when the valve is sealed, and the sealing performance of the valve at low pressure is guaranteed. Furthermore, the wedge-type elastic flashboard can effectively reduce friction force in the opening and closing process of the valve, and the service life of the valve is effectively prolonged. By means of the structure, the valve can be overhauled online, the convenience of valve maintenance is improved, valve filler leakage can be effectively avoided through the filler leakage detecting mechanism, the opening assisting mechanism effectively reduces the friction force between the gate plate and the sealing face after the valve is opened, and the operation thrust of the valve is reduced.

Description

technical field [0001] The invention belongs to the technical field of valves, and in particular relates to a flat gate valve that can realize forced sealing. Background technique [0002] Conventional canning valves generally include flat gate valves and ball valves. However, due to the light weight requirements of canning valves, few users choose ball valves, and due to low pressure sealing, the sealing effect of flat gate valves is better than that of conventional self-sealing valves, so canning valves are generally selected. For light-duty flat gate valves, the valve seat is generally made of non-metal to improve the valve sealing effect, but the valve is always in contact with the sealing surface during the opening and closing process, and impurities often scratch the sealing surface, causing the valve to leak. SUMMARY OF THE INVENTION [0003] Aiming at the defects or deficiencies of the prior art, the present invention provides a flat gate valve. [0004] For this ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K3/02F16K3/314
CPCF16K3/02F16K3/314
Inventor 刘胜张卓刘维国王波杨春晖牟晓勇黄吉伟蔡婧
Owner CHINA PETROLEUM & CHEM CORP
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