Motor-driven bellows inclined type welded valve-body stop valve

A motor-driven, welded technology, which is applied to valve details, valve devices, valve housing structures, etc., to achieve the effects of good anti-friction performance, long service life, good anti-corrosion and anti-friction performance

Inactive Publication Date: 2010-06-23
SHANGHAI HAIXING VALVE FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a motor-driven bellows oblique welded valve body cut-off valve to solve the technical problem that when the stop valve is forced to seal the valve, pressure must be applied to the valve disc to force the sealing surface not to leak.

Method used

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  • Motor-driven bellows inclined type welded valve-body stop valve
  • Motor-driven bellows inclined type welded valve-body stop valve

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Embodiment Construction

[0007] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0008] In the figure: 1. Oblique welded valve body, 2. Overlay welding Co-based hard alloy sealing ring, 3. Titanium-plated austenitic stainless steel bellows device, 4. Valve stem, 5. Gasket, 6. Bolt , 7. Spring washer, 8. Nut, 9. Jack screw, 10. Jack nut, 11. Valve cover, 12 Motor drive head mandrel sleeve, 13. Motor drive head mandrel, 14. Motor drive head mandrel sleeve Horizontal pin, 15. motor drive head device, 16. packing gland, 17. packing, 18. lower packing pad, 19. valve disc.

[0009] Such as figure 1 In the example shown: Co-based hard alloy sealing ring 2 is surfacing welded on the oblique welded valve body 1, and Co-based hard alloy is surfacing welded on the sealing surface, which is wear-resistant, corrosion-resistant, anti-friction, and has a long service life. The titanium-plated austenitic stainless steel bellows device 3 is mechan...

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Abstract

The invention discloses a motor-driven bellows inclined type welded valve-body stop valve and relates to a motor-driven stop valve, which comprises an inclined type welded valve body. The motor-driven bellows inclined type welded valve-body stop valve is characterized in that: a Co-based hard alloy sealing ring is formed on the inclined type welded valve body by surfacing; a titanized austenitic stainless steel bellows device is flexibly and mechanically connected below a valve rod and above a valve clack; pads are embedded into convex and concave contact positions of the inclined type welded valve body and a valve cap, so that the inclined type welded valve body and the valve cap are mechanically connected by springs, bolts, pads and nuts; a packing pad is arranged in a packing box on the valve cap, the packing is covered by a packing gland, and the packing gland is mechanically connected with the valve cover by a jacking screw and a jacking nut on the valve cover; and the upside of the valve rod is arranged in a mandrel sleeve of a motor driving head and mechanically connected with the same, and the lower head of the valve rod is flexibly and mechanically connected with the valve clack. The motor-driven bellows inclined type welded valve-body stop valve is applicable to pipes of various working conditions such as petroleum industry, chemical industry and the like to switch on and off a pipe medium.

Description

Technical field: [0001] The invention relates to a motor-driven cut-off valve, in particular to a motor-driven bellows inclined-type welded valve body cut-off valve. Background technique: [0002] At present, in the known stop valve, the opening and closing part of the stop valve is a plug-shaped valve disc, the sealing surface is a plane or a conical surface, and the valve disc moves linearly along the center line of the fluid. The movement type of the valve stem includes a lifting rod type and a lifting rotating rod type. The stop valve is only suitable for full opening and full closing, and adjustment and throttling are not allowed. It 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. When the medium enters the valve from the bottom of the disc, the resistance that the operating force needs to overcome is the friction between the valve stem and the packing and the thrust generated by th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K41/10F16K41/02F16K31/04F16K27/02
Inventor 季祝华
Owner SHANGHAI HAIXING VALVE FACTORY
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