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Dual-valve-flap stop valve

A globe valve and double-valve technology, applied in the field of double-valve globe valves, can solve the problems of poor sealing effect of globe valves and mechanical damage of valve disks.

Inactive Publication Date: 2018-08-07
ZHONGNAN JIAOZUO AMMONIA VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sealing effect of the existing stop valve is poor, and it is easy to cause mechanical damage to the valve disc when the valve is opened frequently

Method used

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  • Dual-valve-flap stop valve

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Experimental program
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Effect test

Embodiment Construction

[0015] Such as figure 1 As shown, the present invention provides a double-disc stop valve, which includes a valve body 1, a valve stem 2 and a valve disc. 7 is connected with small disc 8. The first gasket 6 is arranged on the small disc 8, and the large disc comprises a disc body 10, a fixed part 4 and a limiting part 3, the fixed part 4 is arranged on the disc body 10, and the limiting part 3 is arranged on the fixed part 3. Part 4 on. A second sealing gasket 9 is provided on the valve disc body 10 corresponding to the first sealing gasket 6 , and a third sealing gasket 11 is provided on the valve disc body 10 corresponding to the valve body 1 . The inner diameter of the limiting part 3 is smaller than the lateral width of the small valve disc 8, and limits the displacement of the valve disc.

[0016] The present invention includes two valve discs, a large valve disc and a small valve disc, and the second sealing pad 9 on the large valve disc and the first sealing pad 6 o...

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PUM

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Abstract

The invention provides a dual-valve-flap stop valve which comprises a valve body, a valve rod and valve flaps. The valve flaps include the large valve flap and the small valve flap, a hand wheel is arranged at one end of the valve rod, and the other end of the valve rod is connected with the small valve flap through a ball; a first sealing gasket is arranged on the small valve flap, the large valve flap includes a valve flap body, a fixing portion and a limiting portion, the fixing portion is arranged on the valve flap body, and the limiting portion is arranged on the fixing portion; a secondsealing gasket is arranged at the position, corresponding to the first sealing gasket, of the valve flap body, and a third sealing gasket is arranged at the position, corresponding to the valve body,of the valve flap body. By adopting the two valve flaps and the two sealing faces, the sealing effect is good, and the fault rate is low.

Description

technical field [0001] The invention relates to a valve, in particular to a double disc stop valve. Background technique [0002] The valve plays an important role in cutting off and throttling the medium in the pipeline where it is located. As an extremely important cut-off valve, the globe valve is sealed by applying torque to the valve stem, and the valve stem moves upward in the axial direction. The disc exerts pressure to make the sealing surface of the disc closely fit with the sealing surface of the valve seat, preventing the medium from leaking along the gap between the sealing surfaces. According to the movement form of the disc, the change of the port of the valve seat is proportional to the stroke of the disc. 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 proportional to the stroke of the valve disc, it is very suit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/36F16K1/32F16K27/02F16K31/60
CPCF16K1/36F16K1/32F16K27/02F16K31/60
Inventor 王广甫田喜战温国旭卢德成闫拓王瑞军
Owner ZHONGNAN JIAOZUO AMMONIA VALVE