Quick-opening stop valve

Abstract

The invention relates to a quick-opening stop valve. The quick-opening stop valve comprises a valve body, a valve deck, a valve rod and a valve clack; a partition plate is fixedly arranged inside thevalve body and divides the interior of the valve body into an upper cavity and a lower cavity, a through groove is formed in the partition plate, the valve rod penetrates through the valve deck and isin threaded connection with the valve deck, and the valve clack is located at the end, deep into the valve body, of the valve rod; the valve clack is used for plugging the through groove, a pipelinebreaking channel is formed inside the valve deck, the pipeline breaking channel is formed in the length direction of the valve deck and parallel to the central axis of the valve deck, the pipeline breaking channel sequentially breaks threads arranged inside the valve deck, a plurality of sliding blocks are fixedly arranged on the outer wall of a valve rod, the adjacent sliding blocks are arrangedin the length direction of the valve rod, the connecting line of the adjacent sliding blocks is parallel to the circuit breaking channel. The valve rod and the central axis of the valve deck are collinear, the valve rod rotates around the central axis, and the sliding blocks adaptively slide relative to internal threads of the valve deck; the sliding blocks rotate to the pipeline breaking channeland can slide in the length direction of the pipeline breaking channel. The quick-opening stop valve has the effects of quickly opening the stop valve and coping with emergencies.

Description

technical field [0001] The present application relates to the field of valves, in particular to a quick-opening shut-off valve. Background technique [0002] At present, the globe valve, also known as the gate valve, is a forced sealing valve, so when the valve is closed, pressure must be applied to the disc to force the sealing surface not to leak. The opening and closing part of the globe valve is a plug-shaped disc, and the disc moves linearly along the centerline of the valve seat. The valve stem adopts the lifting and rotating rod type, which can be used to control the flow of various types of fluids such as air, water, steam, mud, oil, liquid metal and radioactive media. Therefore, this type of globe valve is very suitable as a cut-off, regulation and For throttling. Because the opening or closing stroke of the valve stem of this type of valve is relatively short, and it has a very reliable cut-off function, and because the change of the valve seat opening is proport...

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Problems solved by technology

[0003] In view of the related technologies mentioned above, the inventor believes that there are: when the shut-off valve is opened and closed, the torque is large, and it is difficult to realize rapid opening and closing. When the medium in the hydraulic pipeline needs to pass through the shut-off valve quickly, the shut-off valve cannot be opened in time, which is difficult to deal with. emergency

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