High-sealing-performance gate valve with anti-blocking function and operation method of high-sealing-performance gate valve

Abstract

The invention discloses a high-sealing-performance gate valve with an anti-blocking function. The high-sealing-performance gate valve with the anti-blocking function comprises a gate valve body, a gate valve screw rod and a gate valve gate, a pair of sealing mechanisms are connected to a portion between the gate valve body and the gate valve gate, each sealing mechanism comprises a sealing air bag, a falling extrusion block is connected to a portion between the sealing air bag and the gate valve gate, a pair of supporting plates are connected into the sealing air bag, a plurality of evenly-distributed springback mechanisms are connected into the sealing air bag, a threaded groove matched with the gate valve screw rod is formed in the gate valve gate in a dug mode, and a stable rotating groove matched with the gate valve screw rod is formed in the gate valve body in a dug mode. According to the high-sealing-performance gate valve with the anti-blocking function, through the arrangement of corresponding mechanisms on the gate valve, the sealing performance of the gate valve is effectively improved, meanwhile, accumulation and precipitation of tar substances in the gate valve are reduced, mixed caking of tar and coal gas impurities is avoided, the possibility of sealing failure of the gate valve is greatly reduced, the safety of gas use is improved, meanwhile, the influence on normal opening and closing of the gate valve is reduced, and gas blockage is avoided.

Description

technical field [0001] The invention belongs to the technical field of gate valves, and in particular relates to a high-tightness gate valve with an anti-blocking function and an operating method thereof. Background technique [0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, adjust and control the parameters of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, and regulating valves. [0003] Valves are the control components in the fluid delivery system. They have the functions of cut-off, adjustment, flow diversion, reverse flow prevention, pressure stabilization, flow diversion or overflow pressure relief. Valves used in fluid control systems range from the simplest cut-off valve to extremely complex There are various types and specifications of valves used in the automatic control system. [0004] Valves can be used to control the flow of various types of fluids suc...

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Problems solved by technology

[0009] The object of the present invention is to provide a high-tightness gate valve with anti-blocking function and its operation method, to solve the problem that a large amount of tar substances accumulate at the bottom of the gate valve in the gas pipeline, and after agglomeration with impurities in the gas, it will not only corrode the gate valve , affect the sealing, and also affect the normal opening and closing of the gate valve, causing the problem of gas blockage

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