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Corrugated pipe brake valve

A bellows and gate valve technology, applied in the field of gate valves and bellows gate valves, can solve the problems of poor sealing effect of bellows gate valves, inconvenient processing and casting, and achieve the effect of solving the difficulty of welding, reducing the difficulty of welding and avoiding leakage.

Active Publication Date: 2014-08-06
KUSN WEISA VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art, provide a bellows gate valve, and solve the technical problems of poor sealing effect and inconvenient processing and casting of the bellows gate valve in the prior art

Method used

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  • Corrugated pipe brake valve
  • Corrugated pipe brake valve
  • Corrugated pipe brake valve

Examples

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Embodiment Construction

[0018] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0019] Such as Figure 1 to Figure 3 As shown, a bellows 3 gate valve includes a valve body 1, a valve cover 2, a bellows sleeve 4, a bellows 3 passing through the bellows sleeve 4, and a valve stem 5 passing through the bellows 3, and the valve cover 2 is surrounded by The valve stem 5 is provided with a stuffing box, the stuffing box is filled with stuffing, the valve body 1 is connected with the gate plate 6 through the valve seat 8, the upper end of the valve stem 5 runs through the valve cover 2 and is connected with a hand wheel 7, and the lower end of the valve stem 5 is provided with There is a T-shaped connector 5A, and the gate plate 6 is provided with a T-shaped groove, and the T-sha...

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Abstract

The invention discloses a corrugated pipe brake valve, comprising a valve body, a valve deck, a corrugated pipe sleeve, a corrugated pipe running through the corrugated pipe sleeve and a valve rod running through the corrugated pipe, wherein a stuffing box is arranged on the valve deck around the valve rod; a filler is filled into the stuffing box; a flashboard is connected inside the valve body through a valve seat; the upper end of the valve rod running through the valve deck and is connected with a hand wheel; a T-shaped connector is arranged at the lower end of the valve rod; a T-shaped groove is formed in the flashboard; the T-shaped connector is arranged inside the T-shaped groove and is in clearance fit with the T-shaped groove; a valve deck flange which is arranged integrally with the valve deck is arranged on the valve deck; a valve body flange which is arranged integrally with the valve body is arranged on the valve body; an upper flange which is fixedly and tightly connected with the valve deck flange is arranged at the upper end of the corrugated pipe sleeve; a lower flange which is fixedly and tightly connected with the valve body flange is arranged at the lower end of the corrugated pipe sleeve. The corrugated pipe brake valve adopts a three-stage connection structure of the valve deck, the corrugated pipe sleeve and the valve body, and the processing and casting difficulty is significantly reduced.

Description

technical field [0001] The invention relates to a gate valve, in particular to a bellows gate valve, which belongs to the technical field of valves. Background technique [0002] Gate valves are widely used in various fields such as petroleum, chemical industry, steel, metallurgy and electric power. Compared with other valves that control the flow of pipeline media, gate valves have the advantages of small flow resistance, small opening and closing torque, wide application temperature range, and reliable sealing. However, the traditional gate valve stem and bonnet use packing seals, relying on packing glands, gland flanges and bolts to maintain the compression force on the packing surface, but during the valve opening and closing process, the valve stem rises and falls will cause the packing surface to be in contact with the valve cover. The specific pressure of the sealing surface of the valve stem is reduced, which leads to the failure of the packing seal and leakage. For...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K41/10F16K27/04
CPCF16K27/044F16K41/10
Inventor 方月英朱建明
Owner KUSN WEISA VALVE
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