Fully-sealing flap valve

Abstract

The invention relates to a full-sealing flap valve, and belongs to the technical field of flap valves. The full-sealing flap valve comprises a fixed valve body, a movable valve body and a valve plate located between the fixed valve body and the movable valve body. The valve plate is driven by a plate turning device to swing so as to switch the opening state and the closing state. A corrugated pipe for achieving compression and stretching is arranged in the middle of the movable valve body and divides the movable valve body into a fixed section and a movable section, and the movable section is driven by a loosening and pressing device to move. The butt joint position of the fixed valve body and the movable valve body is located in a valve body box playing a sealing role. Sealing rings are arranged between the fixed valve body and the valve plate and between the movable valve body and the valve plate. According to the full-sealing flap valve, a closed space is formed in the valve body box, the valve plate is located in the valve body box in the valve opening and closing process, no leakage of media in the valve opening and closing process is achieved, the valve body box is in an irregular sector shape, the requirement for the moving track of the valve plate is met, and the occupied space is saved; and no medium leaks in the valve opening and closing process, and the safety is good.

Description

technical field [0001] The invention relates to a fully sealed flap valve, which belongs to the technical field of flap valves. Background technique [0002] Blind plate valve is also called glasses valve, which is divided into flip-type glasses valve and plug-in glasses valve in the industry. It is mainly used in the gas pipeline of blast furnace ironmaking system or converter steelmaking system to cut off the gas reliably. Key equipment to ensure zero leakage of gas. [0003] At present, the commonly used flap glasses valve is an open structure, which will leak a certain amount of gas during the switching process of the blind plate, and there is a certain risk; while the full-sealed flap glasses valve occupies a relatively large space, due to the steel plant pipeline laying Or upgrading and transformation, there are often problems such as limited installation space, and the installation of the open-type flap glasses valve to a fully-sealed flap glasses valve cannot be ins...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used flap glasses valve is an open structure, which will leak a certain amount of gas during the switching process of the blind plate, and there is a certain risk; while the full-sealed flap glasses valve occupies a relatively large space, due to the steel plant pipeline laying Or upgrading and transformation, there are often problems such as limited installation space, and the installation of the open flap spectacle valve to a fully sealed flap spectacle valve cannot be installed.

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