Brake vale

A gate valve and valve stem technology, applied in the field of valves, can solve the problems of large opening and closing torque of the valve, easy damage to the sealing ring, and inability to automatically adjust the compression ratio, so as to reduce the opening and closing torque of the valve, prolong the life of parts, and facilitate disassembly and assembly. Effect

Inactive Publication Date: 2015-07-01
ANHUI REDSTAR VALVE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing gate valve structure, the bonnet and copper nut are threaded. When the valve is processed and assembled, the valve body, bonnet, gate plate, copper nut, valve stem and other parts interact with each other out of concentricity, which often causes the valve to open. The closing torque is large, the compression ratio cannot be adjusted automatically, and the sealing ring is easily damaged

Method used

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  • Brake vale

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with accompanying drawing.

[0018] like figure 1 As shown, the gate valve provided by the present invention includes four parts: a bonnet 1, a valve stem 2 in the bonnet 1, a valve stem envelope 3 nested between the bonnet 1 and the valve stem 2, and a sealing dustproof Functional sealing mechanism4. The valve stem cover 3 is divided into two parts: a sleeve body 31 and a stepped portion 32. The sleeve body 31 of the valve stem cover 3 is a hollow cylinder, and the thickness of the sleeve body 31 is slightly smaller than the distance between the valve stem 2 and the valve stem cover. The body 31 is located between the valve stem 2 and the valve cover 1 . The stepped portion 32 is located at the top of the sleeve body 31 , and the stepped portion 32 is integrated with the sleeve body 31 . The step portion 32 and the sleeve body 31 form rounded corners, which can better make the step portion 32 fit t...

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Abstract

The invention provides a brake valve. The brake vale comprises a valve cover, a valve rod arranged in the valve cover, a valve rod sealing sleeve embedded between the valve cover and the valve rod in a sleeved manner and a sealing mechanism. The top end of the sealing mechanism plays a role in sealing and dust prevention. A locating portion is arranged on the valve cover, and a locating groove matched with the locating portion for locating is arranged on the valve rod sealing sleeve; and a plurality of sealing grooves are formed in the valve rod sealing sleeve, and sealing rings are arranged in the sealing grooves. The sealing mode between the valve rod sealing sleeve and the valve cover is changed, vibration and eccentricity of the valve rod in the motion process can be effectively relieved, open and close torque of the valve is reduced, and the service life of a part is prolonged.

Description

technical field [0001] The invention relates to the technical field of valves, in particular to a gate valve. Background technique [0002] Gate valves are commonly used in drinking water pipelines and are also one of the essential valves. It drives the valve stem to rotate through the hand wheel, so that the gate moves up and down to achieve the purpose of opening and closing the valve, controlling the flow of the medium or stopping it. In the existing gate valve structure, the bonnet and copper nut are threaded. When the valve is processed and assembled, the valve body, bonnet, gate plate, copper nut, valve stem and other parts interact with each other out of concentricity, which often causes the valve to open. The closing torque is large, the compression ratio cannot be automatically adjusted, and the sealing ring is easily damaged. Contents of the invention [0003] In view of the above existing problems, the object of the present invention is to provide a gate valve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K3/04F16K3/30F16K27/12
CPCF16K41/02F16K27/08F16K41/04
Inventor 韩安伟高文娟张斌
Owner ANHUI REDSTAR VALVE
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