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Butterfly valve

A technology of butterfly valve and valve plate, which is applied in the direction of lifting valve, valve details, valve device, etc., which can solve the problems of high mold cost, falling off, liquid leakage, etc.

Inactive Publication Date: 2009-12-09
CHI MEN PRECISION INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] But the shortcoming of above-mentioned butterfly valve is: the valve of main body needs to be provided with large and small-diameter encirclement, for the setting of seal ring, when making main body with injection molding of plastic raw material, the mold cost of development is higher, and because the valve of main body must At the same time, the housing groove 12 for the sealing ring is formed, so the injection molding speed of the body is slow
Furthermore, if the sealing ring 11 is set in the housing groove 12, after a period of use, it may fall off, causing the valve plate of the butterfly valve to be unable to seal tightly, resulting in the problem of liquid leakage.

Method used

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Embodiment Construction

[0027] The structure and composition of the butterfly valve of the present invention and the effects it can produce are described below in detail with preferred embodiments in conjunction with the accompanying drawings:

[0028] Such as Figure 3-5 As shown, the butterfly valve of the present invention includes: a body 2 and a valve plate 4 .

[0029] The body 2 is integrally formed and provided with a valve 20. The inner wall 200 of the valve 20 is a through-shaped hole. The inner diameter of the hole is consistent from front to back, which is convenient for the mold making of the body 2. When the body 2 is injection-molded with plastic raw materials, it will be faster. And stable. The body 2 is provided with a handle 3, the handle 3 is provided with a shaft 30, and the shaft 30 is accommodated in the hole 21, so that the shaft 30 enters the accommodation hole 21 from the top of the body, and passes through the shaft hole of the valve plate 4, so that the handle 3 can contr...

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Abstract

The invention discloses a butterfly valve comprising a body and a valve sheet. The body is provided with a handle and a valve, wherein the handle is provided with a shaft and connected with the valve sheet; the valve sheet is arranged in the valve of the body, a sealing ring is arranged in a forming groove of a forming die of the valve sheet before the valve sheet is formed, and the sealing ring is completely and fixedly arranged on the ring periphery of a valve surface when the valve sheet is formed so as to provide sealing effect when the valve sheet is closed and prevent liquid from leaking; and one side of the valve surface is provided with a shaft hole which is eccentrically arranged corresponding to the center of the valve surface, thus when the valve sheet is operated by the handle, the valve sheet can be smoother to rotate, start and close. When the butterfly valve is assembled, the sealing ring and the valve are not necessary to be additionally installed, thereby the butterfly valve is faster and smoother to be assembled.

Description

technical field [0001] The present invention relates to a butterfly valve, in particular to a sealing ring which is used to place the sealing ring in the forming groove of the molding die of the valve plate before the valve plate is formed, and when the valve plate is injection-molded with plastic raw materials, the sealing ring can be The valve surface ring is completely fixed on the valve surface, making the opening and closing of the valve plate more smooth, and the butterfly valve with a stronger anti-leakage effect. Background technique [0002] Such as figure 1 and 2 As shown, the existing butterfly valve includes a body 1, a valve 10 is arranged on the body 1, a large-diameter ring 100 and a small-diameter ring 101 are set on the inner wall of the valve 10, and a seal is set at the adjacent parts of the large-diameter and small-diameter rings. The ring 11 and the sealing ring 11 are accommodated in a housing groove 12, and the sealing ring 11 is supported by the lar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/226F16K1/46F16K1/36F16K31/60
Inventor 蔡琪隆
Owner CHI MEN PRECISION INDAL
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