Threaded soft sealing gate valve capable of effectively reducing fluid resistance and using method

Abstract

The invention discloses a threaded soft sealing gate valve capable of effectively reducing fluid resistance and a using method. The threaded soft sealing gate valve comprises a valve body and a valve deck, the valve deck is arranged at the upper end of the valve body, a limiting sleeve is arranged on the upper portion of the inner wall of the valve deck, a valve rod is arranged in the limiting sleeve in a sleeved mode, a limiting block is fixedly arranged on the valve rod, and the limiting block makes contact with the upper end face of the limiting sleeve; a restraining disc is fixedly arranged at the bottom of the valve deck, a restraining hole is formed in the middle of the restraining disc, the valve rod penetrates through the restraining hole, the upper end of the valve rod is connected with a rotary disc, and the lower end of the valve rod is connected with a valve plate. The sealing performance of the valve body is improved by arranging the restraining disc, the limiting sleeve and the limiting block, the rotating disc is connected through a bolt so that the use of the gate valve can be managed conveniently, and the maintenance convenience of the gate valve is improved by arranging the mounting flange and the valve deck in a detachable mounting mode through inner hexagon screws; by adopting the flat-bottom valve seat design the same as that of the water pipe and coating the epoxy resin coating at the bottom, the flow resistance coefficient is reduced, the anti-rust capability is improved, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of soft-sealed gate valves with silk openings, in particular to a soft-sealed gate valve with silk openings that can effectively reduce fluid resistance and a use method thereof. Background technique [0002] A valve is a device used to control the direction, pressure, and flow of a fluid in a fluid system. It is a device that makes or stops the medium in piping and equipment and controls its flow; [0003] Soft-sealed gate valve, industrial valve, the opening and closing part of the soft-sealed gate valve is a gate, the direction of movement of the gate is perpendicular to the direction of the fluid, the gate valve can only be fully opened and fully closed, and cannot be adjusted and throttled. The opening and closing part of the soft-sealed gate valve is a gate, and the movement direction of the gate is perpendicular to the direction of the fluid. The gate valve can only be fully opened and fully closed, a...

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Problems solved by technology

[0004] However, the maintenance of the existing soft-sealed gate valve requires the gate valve to be disassembled from the pipeline, which affects the normal pipeline transportation, and the maintenance time is too long, causing a lot of inconvenience; At this time, there is a downward force on the valve stem. After a long time of use, the valve stem will be displaced, which will increase the friction between the valve plate at the lower part of the valve stem and the inside of the gate valve, which will affect the service life of the gate valve. Moreover, the material resistance in the gate valve cavity The coefficient is large, which affects the transmission efficiency of the pipeline medium

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