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Eccentric butterfly valve

An eccentric butterfly valve and valve body technology, which is used in lift valves, valve devices, engine components, etc., can solve the problems of easy wear of the sealing structure, safety accidents, leakage, etc., and achieve the effect of avoiding jamming, improving service life and reducing wear and tear.

Inactive Publication Date: 2017-06-20
CHENGDU DESHANNENG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The eccentric butterfly valve belongs to the torque seal. When the valve is switched on and off, the sealing structure is usually easy to wear and even get stuck, causing leakage or other safety accidents.

Method used

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  • Eccentric butterfly valve

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Embodiment Construction

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0025] as shown in the picture 1 An eccentric butterfly valve shown, including a butterfly plate 1 , valve body 2 , stem 3 , sealing ring 4 , spring group 5 ,M 6 , water guide bearing 7 , the stem 3 through the valve body 2 The flow channel is installed in the valve body 2 on, the stem 3 plate mounted on 1 , the stem 3 The bottom is equipped with a water guide bearing 7 , the stem 3 The middle part is installed with a disc plate 1, The deck 1 Set in the runner, the disc 1 Including mounting holes and convex body, the disc is located in the 1 The mounting hole on the stem mounts the 3 above, the axis line of the mounting hole, the disc plate 1 The vertical centerline of the convex body does not intersect the center line of the valve flow channel, the shape of the convex body is circular, and the top vi...

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Abstract

The invention discloses an eccentric butterfly valve comprising a valve rod, a butterfly plate and a valve body, wherein the valve rod is installed on the valve body through a channel of the valve body, and provided with the butterfly plate; the bottom of the valve rod is provided with a water pilot bearing, and the middle part of the valve rod is provided with the butterfly plate arranged in the channel and comprising a mounting hole and a convex; the mounting hole arranged on the butterfly plate is installed on the valve rod, and the axis of the mounting hole, the vertical center line of the butterfly plate convex and the center line of the valve channel are non-intersect; the convex is circular, and the sealing surface of the convex is cambered in a top view. The invention technically aims to provide an eccentric butterfly valve with the advantages of high reliability, small torque for opening and closing the valve, reliable sealing and long service life of a seal.

Description

technical field [0001] The invention relates to the field of valves, in particular to an eccentric butterfly valve. Background technique [0002] In the field of valves, butterfly valves are one of the most widely used valves. Butterfly valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media. It mainly plays the role of cutting and throttling on the pipeline. The opening and closing part of the butterfly valve is a disc-shaped butterfly plate that rotates around its own axis in the valve body to achieve the purpose of opening and closing or adjustment. The butterfly valve has the advantages of simple structure, small size, light weight, low material consumption, small installation size, fast switching, 90 °Reciprocating rotation, small driving torque and other characteristics, used to cut off, connect and adjust the medium in the pipeline, with good fluid control...

Claims

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Application Information

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IPC IPC(8): F16K1/22F16K1/226F16K1/36
CPCF16K1/221F16K1/2266F16K1/36
Inventor 李燕
Owner CHENGDU DESHANNENG TECH CO LTD
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