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Stop valve

A globe valve and valve seat technology, applied in the field of globe valves, can solve the problems of contaminating the sealing surface, adhesion of impurities, affecting the scraping effect, etc., to ensure the scraping effect and protect the valve core.

Inactive Publication Date: 2020-09-29
张文波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the fact that impurities are often adsorbed on the sealing surface of the valve seat to affect the sealing effect of the globe valve during the opening process of the valve port, there are some structures that use scraping devices to scrape impurities. After the impurities are removed, some impurities will stick to the scraping device, and the impurities on it will contaminate the sealing surface when the scraping device is returned, and will affect the scraping effect in the next scraping, thus affecting the use effect of the stop valve

Method used

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Embodiment Construction

[0026] 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.

[0027] 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 stop valve which comprises a valve body and a valve cover. An inlet runner and an outlet runner are arranged in the valve body. A division plate is arranged between the inlet runner and the outlet runner. A valve seat is arranged on the side, located on the inlet runner, in the valve body. The stop valve further comprises a clearing mechanism and a protection plate cleaning part. The clearing mechanism is connected with the valve body, and media deposited on the surface of the valve seat can be cleaned away. The clearing mechanism comprises a protection plate, a connecting plate and a hinged part. Through ascending and descending of a valve clack, the protection plate can be controlled to clear the sealing face of the valve seat, and the protection plate cleaningpart can clean the protection plate. The stop valve has the advantages that through the arrangement of the clearing mechanism and the protection plate cleaning part, the clearing mechanism can be used for clearing the valve seat and can be cleared, and therefore the sealing effect of the valve clack and the valve seat is guaranteed, and maintenance cost is reduced.

Description

technical field [0001] The invention relates to the technical field of pipeline valves, in particular to a shut-off valve. Background technique [0002] Globe valve refers to the valve whose closing disc moves along the center line of the valve seat. It mainly plays a role of cutting off the pipeline. It is widely used in petroleum, petrochemical, chemical, metallurgy, electric power, fire protection, machinery, plumbing and other fields. Due to the fact that impurities are often adsorbed on the sealing surface of the valve seat to affect the sealing effect of the globe valve during the opening process of the valve port, there are some structures that use scraping devices to scrape impurities. After the impurities are removed, some impurities will stick to the scraping device, and the impurities on it will contaminate the sealing surface when the scraping device is returned, and will affect the scraping effect in the next scraping, thus affecting the use effect of the globe ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/32F16K51/00F16K1/02F16K31/60B08B1/00B08B13/00
CPCF16K1/32F16K51/00F16K1/02F16K31/60B08B13/00B08B1/165
Inventor 张文波唐恒江马瑞花
Owner 张文波
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