Four-dimensional four-eccentric unidirectional and bidirectional sealing butterfly valve

A four-eccentric, four-dimensional technology, used in the field of sealing butterfly valves, can solve the problems of poor compensation effect and insufficient sealing, and achieve the effects of wide application range, long service life and enhanced sealing performance.

Inactive Publication Date: 2016-02-03
黄一立
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: The invention provides a four-dimensional four-eccentric single-bidirectional sealing butterfly valve, which aims to solve the problems of poor compensation and insufficient sealing of the existing butterfly valves

Method used

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  • Four-dimensional four-eccentric unidirectional and bidirectional sealing butterfly valve

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Embodiment 1

[0027] Such as figure 1 As shown, the present invention is a four-dimensional four-eccentric two-way sealed butterfly valve, which includes a butterfly plate combination consisting of a valve body 1, a valve shaft 11, a valve plate 3, laminations 6, and a valve plate retainer 4. The valve plate 3 is mounted on the valve Inside the body 1, the pin 2 is used to fix the valve shaft 11, and the stuffing box 7 is equipped with a transmission mechanism; the valve plate 3 is a four-dimensional four-eccentric structure, and the valve plate 3 of the four-dimensional four-eccentric structure is positioned on all sides of the valve seat of the valve body 1, that is The a, b, c, d surfaces of the oblique-dimensional valve seat and the four sides a', b', c', d' of the oblique-dimensional lamination of the valve plate are arranged together according to the combined position to form a sealing structure, see image 3 , to ensure the sealing stability and increase the sealing area. After the ...

Embodiment 2

[0032] Manufacture a four-dimensional four-eccentric two-way sealing butterfly valve of the present invention, its diameter is DN800, PN1.6MPa design principle see figure 1 , where the value of the first eccentricity is 78.85±0.1, the value of the second eccentricity is 73.75±0.1, the value of the third eccentricity is 22±0.1, and the value of the fourth eccentricity is 6.6±0.1, from image 3 Zhongkan’s 1-dimensional point a angle is 18°, 2-dimensional point b’s angle is 9°30′, and 3-dimensional point c’s angle α is 1° to further strengthen the function of the four-dimensional four-eccentric sealing butterfly valve; the 4-dimensional point d’s angle is 9°30′. When assembling, the valve plate 3, the lamination 6, and the valve plate pressure ring 4 are assembled and fixed with bolts 5 to form a butterfly plate assembly, and then the butterfly plate assembly and the valve shaft 11 are installed on the valve seat. The pin 2 forms the valve shaft and the valve plate as a whole, ...

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Abstract

The invention discloses a four-dimensional four-eccentric unidirectional and bidirectional sealing butterfly valve which comprises a butterfly plate assembly consisting of a valve body, a valve shaft, a valve plate, a stack and a valve plate pressure ring, wherein the valve plate is arranged in the valve body and fixed on the valve shaft through a pin; a stuffing box is arranged on the upper part of the valve body; and a transmission mechanism is arranged on the stuffing box. The four-dimensional four-eccentric unidirectional and bidirectional sealing butterfly valve is characterized in that the valve plate has a four-dimensional four-eccentric structure, wherein the valve plate of the four-dimensional four-eccentric structure is located with four surfaces of a valve base of the valve body, i.e., surfaces a, b, c and d of a diagonal-dimensional valve base and surfaces a', b', c' and d' of a valve plate diagonal-dimensional stack are correspondingly arranged together according to an assembly position so as to form a sealing structure; a sealing angle alpha of the assembled c-c' is 1 degree, and the degree is changeless, and is a designed angle. The four-dimensional four-eccentric unidirectional and bidirectional sealing butterfly valve is reasonable in structure, wide in scope of application, long in service lifetime, free of leakage, relatively low in manufacturing cost, convenient in mounting, and high in qualified rate; and safety cost is greatly reduced.

Description

technical field [0001] The invention relates to a sealing butterfly valve, in particular to a four-dimensional and four-eccentric bidirectional sealing butterfly valve. Background technique [0002] Butterfly valves are the development direction of valves used in large-diameter pipelines. However, the existing butterfly valves have disadvantages such as single butterfly plate structure, inability to adjust, inability to compensate, and low strength. Most of the sealing materials on the valve are made of polymer materials. Temperature resistance, no pressure resistance, no wear resistance, low service life, it is difficult to expand the scope of use, and now there is a four-dimensional four-eccentric two-way sealing butterfly valve, although basically solved the above problems, but its sealing angle is not scientific enough, which also makes There are still defects in the compensation effect and sealing performance of the entire sealed butterfly valve. Contents of the inven...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/22F16K1/36
CPCF16K1/22F16K1/36
Inventor 黄一立杨思佳
Owner 黄一立
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