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Manual butterfly valve of center control line

A central control line, butterfly valve technology, applied in the direction of lift valve, valve device, engine components, etc., can solve the problems of small pressure and working range, easy damage of rubber rings, difficult to repair or replace, etc., to achieve low cost, simple replacement, The effect of easy maintenance

Inactive Publication Date: 2017-02-15
WUXI UNITE PURIFICATION EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Manual butterfly valves are widely used, but because the inside of the butterfly valve is often sealed with a rubber ring, its pressure and working range are small. Even so, the rubber ring is still easy to damage. Seat sticking, very difficult to repair or replace

Method used

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  • Manual butterfly valve of center control line
  • Manual butterfly valve of center control line
  • Manual butterfly valve of center control line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] Such as Figure 1-3 Shown: the central control line manual butterfly valve, including valve seat 1, valve plate 2, valve seat liner 3, valve stem 4 and handle 5; the valve seat 1 is provided with a valve seat liner 3, and the valve plate 2 passes through the valve The seat ring 3 is arranged in the valve seat 1; the valve plate 2 is connected to the valve stem 4, and the valve stem 4 is connected to the handle 5; an isolation bush 6 is also provided between the valve seat ring 3 and the valve seat 1 , The isolation bushing 6 includes a sleeve 6-1 and an extension 6-2; the extension 6-2 takes the center of the sleeve 6-1 as the center and extends radially toward the sleeve 6-1 to form The center of the sleeve 6-1 is a ring with the center of the circle.

[0014] The valve seat lining ring 3 is made of the same material as the inner wall of the valve seat 1. The valve seat ring 3 and the valve seat 1 form a clearance fit. The width of the extension 6-2 is greater than the...

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Abstract

The invention relates to a manual butterfly valve of a center control line, and belongs to the technical field of valves. The manual butterfly valve comprises a valve seat, a valve plate, a valve seat lining ring, a valve rod and a handle; the valve seat lining ring is arranged in the valve seat, and the valve plate is arranged in the valve seat through the valve seat lining ring; the valve plate is connected to the valve rod, and the valve rod is connected to the handle; an isolation lining is arranged between the valve seat lining ring and the valve seat and comprises a shaft sleeve and an extension part; and the extension part adopts the circle center of the shaft sleeve as the circle center and extends towards the shaft sleeve in the radial direction to form a round ring with the circle center of the shaft sleeve as the circle center. The manual butterfly valve is simple in structure, the rubber lining ring can be easily replaced by additionally arranging the shaft sleeve on an existing butterfly valve, the transformation cost is low, maintenance is convenient, and the operation is simple. The manual butterfly valve is suitable for large-scale application.

Description

Technical field [0001] The invention relates to a central control line manual butterfly valve, in particular to a central control line manual butterfly valve convenient for maintenance, and belongs to the technical field of valves. Background technique [0002] Butterfly valve, also called flap valve, is a kind of regulating valve with simple structure. The butterfly valve that can be used for switching control of low-pressure pipeline medium refers to the closing part (disc or butterfly plate) as a disc, which rotates around the valve shaft to achieve opening and closing. A type of valve that 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 is mainly used for cutting off and throttling on the pipeline. The butterfly valve opening and closing part is a disc-shaped butterfly plate, which rotates around its own axis in the valve body to achieve the purpose of opening and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/226F16K1/42F16K1/32
CPCF16K1/2263F16K1/32F16K1/42
Inventor 宋大伟薛少威许峙彬
Owner WUXI UNITE PURIFICATION EQUIP CO LTD
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