Spherical butterfly valve

A technology for butterfly valves and ball valves, which is applied in the field of butterfly valves using spherical valve plates, which can solve the problems of high material consumption, low pressure resistance, and narrow sealing rings, and achieve the effects of improving efficiency, reducing costs, and good sealing performance

Inactive Publication Date: 2007-11-14
白宏伟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantages of ball valves are good sealing and high pressure resistance, but they consume a lot of materials and are expensive; the advantages of butterfly valves are light weight and low price, but their sealing performance is not good, especially tight butterfly valves are difficult to be tight, and have low pressure and are easy to leak
Conventional butterfly valves are sealed by pressing the valve plate and the valve seat. The valve seat is in the form of a cone or a ring, and the valve plate

Method used

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Examples

Experimental program
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Effect test

Example Embodiment

[0012] A spherical butterfly valve includes a valve body 6, a valve plate 4, a valve seat 3, a valve seat 5, a sealing ring 2, and a valve stem 1. The valve plate 4 of the spherical butterfly valve is made into a spherical body, which is equivalent to cutting a part of the sphere with the same thickness on both sides with the center of the sphere as the center of symmetry, and the ring-shaped sphere in the middle is used as the valve plate 4 of the spherical butterfly valve. The upper end of the valve plate 4 is connected with the valve stem 1, and the outer circumferential surface of the valve plate 4 adopts a surface contact fit with the valve seat 3 and the valve seat 5, and a sealing ring 2 is provided on the valve seat 3 and the valve seat 5.

[0013] The seat 3 and seat 5 of the spherical butterfly valve adopt the ball valve seat, so that the original line seal between the butterfly valve and the seat becomes two annular surface sealing belts, which not only ensures good sealin

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PUM

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Abstract

The invention relates to a spherical butterfly valve, comprising valve body, valve plate, valve seat, seal ring, and valve rod, where the valve plate is a sphere whose two sides are cut out by a certain thickness with the center of sphere of spherical valve as a symmetrical center, the upper end of the valve plate is linked with the valve rod, the valve seat is a spherical valve seat, the outer circumferential surface of the valve plate makes surface contact cooperation with the valve seat, and the valve seat is equipped with the seal ring. And the invention has features of reasonable structure design, small volume, and strong sealing property, able to be widely applied to valve industry.

Description

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Claims

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Application Information

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Owner 白宏伟
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