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Washout-preventing soft-sealing single-seat regulating valve

A soft sealing and regulating valve technology, applied in the field of regulating valves, can solve the problems of short service life of non-metallic seals, sealing erosion of non-metallic materials, difficulty in disassembly, assembly and maintenance, etc., to extend service life, avoid direct erosion, avoid The effect of bolting

Inactive Publication Date: 2012-02-22
TIANJIN BAILIZHANFA GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the regulating valve is working, for the fluid medium with a certain pressure difference, the fluid medium will seriously erode the non-metal material seal; especially in the case of high pressure difference, the service life of the non-metal seal is very short
In addition, the installation structure of the existing single-seat regulating valve body is relatively complicated, and it is difficult to disassemble and maintain

Method used

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  • Washout-preventing soft-sealing single-seat regulating valve
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  • Washout-preventing soft-sealing single-seat regulating valve

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Embodiment Construction

[0014] The present invention will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.

[0015] An anti-erosion soft-sealed single-seat regulating valve, comprising a valve body 6, a valve cover 1, a valve seat 9, a soft sealing gasket 8, a valve stem 2 and a valve core 3, the valve body and the valve cover pass through respective flanges Bolts are coaxially connected, and the valve core is coaxially installed at the lower end of the valve stem in the valve body, and a valve seat is coaxially fixed on the valve body between the valve core and the valve body, and a Sealing 10, a soft sealing gasket is fixed on the outer edge of the valve core in contact with the valve seat, the valve core can form a sealing fit with the valve seat through the soft sealing gasket, and the valve core is driv...

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Abstract

The invention relates to a washout-preventing soft-sealing single-seat regulating valve, which comprises a valve body, a valve cover, a valve seat, a soft-sealing washer, a valve rod and a valve plug; the valve body is coaxially connected with the valve cover, the valve plug is coaxially arranged at the lower end of the valve rod which is arranged in the valve body, the valve seat is coaxially fixedly arranged on the valve body between the lower part of the valve plug and the valve body, a seal is arranged between the valve seat and the valve body, the soft-sealing washer is fixed arranged on the outer edge of the valve plug which is in contact with the valve seat, the valve plug and the valve seat form sealing cooperated through the soft-sealing washer, the valve plug realizes regulation and on and off of the valve through the driving of the valve rod, and a guide convex plate ring is coaxially arranged on the valve plug at the lower end face of the soft-sealing washer at the lower part of the valve plug, which is in contact with the valve seat. The regulating valve can avoid direct washout of a medium on a nonmetal sealing surface, and has a more remarkable effect especially under the working condition of higher pressure difference, thus the service life can be effectively prolonged.

Description

Technical field: [0001] The invention belongs to regulating valves in valves, in particular to an anti-erosion soft-sealing single-seat regulating valve. Background technique: [0002] At present, the soft-sealed single-seat regulating valve is a seal made of PTFE or other non-metallic materials fixed on the valve core by bolts and pressure plates. When the valve is closed, the valve core and the valve seat press the seal to achieve flow path shutdown function. When the regulating valve is working, for the fluid medium with a certain pressure difference, the fluid medium will seriously erode the non-metallic material seal; especially in the case of high pressure difference, the service life of the non-metallic seal is very short. In addition, the installation structure of the existing single-seat regulating valve body is relatively complicated, and disassembly and maintenance are relatively difficult. Invention content: [0003] The purpose of the present invention is to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/36F16K1/46F16K1/32
Inventor 周清平杨宇
Owner TIANJIN BAILIZHANFA GRP
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