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Butterfly valve

A butterfly valve and valve body technology, which is used in lift valves, valve devices, engine components, etc., can solve the problems of easy corrosion and poor sealing performance of butterfly valves, and achieve strong corrosion resistance, good application prospects and good sealing effect. Effect

Inactive Publication Date: 2017-08-11
YANGZHONG FIRST BUTTERFLY VALVE FACTORY
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] Butterfly valve is a kind of regulating valve with relatively simple structure. It is usually mainly used for cutting off or throttling various types of fluids such as water in pipelines, various corrosive media, mud, oil products, and liquid metals. Various types of fluids, therefore, the sealing performance is particularly important. The existing butterfly valves have poor sealing performance and are easily corroded after long-term use. Therefore, further research is needed

Method used

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  • Butterfly valve

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0017] Such as figure 1 As shown, a butterfly valve includes a hollow valve body 1, a valve shaft 2 vertically penetrating through the valve body 1, and a valve plate 3 sleeved outside the valve shaft 2. The valve plate 3 is driven by the valve shaft 2 The rotation and valve body 1 realize the opening and closing action. The inner surface of the valve body 1 is provided with a ceramic gasket 4 arranged along the circumferential direction of the valve body 1, and the outer peripheral side of the valve plate 3 is provided with a The ceramic sealing plate 5 arranged in the circumferential direction, the ceramic sealing plate 5 is provided with a groove 6 arranged along the circumferential directio...

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Abstract

The invention discloses a butterfly valve. The butterfly valve comprises a valve body with a hollow internal part, a valve shaft which vertically penetrates through the valve body and a valve plate which sleeves the valve shaft, wherein the valve plate is driven by the valve shaft to open or close the valve body; the inner side surface of the valve body is provided with a ceramic gasket which is arranged along the perimeter direction of the valve body; the periphery side of the valve plate is provided with a ceramic sealing plate which is arranged along the perimeter direction of the valve plate; a groove which is formed along the perimeter direction of the ceramic sealing plate is formed in the ceramic sealing plate; and a polytetrafluoroethylene gasket is arranged in the groove. The butterfly valve disclosed by the invention has a double-layer sealing effect, is high in corrosion resistance, has good application prospect and is worth promotion.

Description

technical field [0001] The invention relates to a butterfly valve, in particular to a butterfly valve with excellent sealing performance, and belongs to the technical field of valves. Background technique [0002] Butterfly valve is a kind of regulating valve with relatively simple structure. It is usually mainly used for cutting off or throttling various types of fluids such as water in pipelines, various corrosive media, mud, oil products, and liquid metals. Various types of fluids, therefore, the sealing performance is particularly important. The existing butterfly valves have poor sealing performance and are easily corroded after a long period of use. Therefore, further research is needed. Contents of the invention [0003] In order to solve the deficiencies of the prior art, the purpose of the present invention is to provide a butterfly valve with double-layer sealing effect and strong corrosion resistance, which has good application prospects and is worthy of popular...

Claims

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Application Information

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IPC IPC(8): F16K1/226
CPCF16K1/2261
Inventor 许瑞华
Owner YANGZHONG FIRST BUTTERFLY VALVE FACTORY
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