Butterfly valve

一种蝶形阀、形式构造的技术，应用在升阀、阀细节、阀装置等方向，能够解决蝶形阀高重量、腐蚀蝶形阀等问题

Active Publication Date: 2020-10-23
GEORG FISCHER PIPING SYST PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The disadvantage here is that the butterfly valve has a high weight, and if the plastic layer separates, corrosion can form and the butterfly valve is no longer adequate

Method used

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  • Butterfly valve
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Examples

Experimental program
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Embodiment Construction

[0028] figure 1 The diagram illustrated in shows a longitudinal section through a butterfly valve 1 according to the invention. Butterfly valve 1 is used to cut off and regulate the medium flowing through the pipeline. The butterfly valve 1 comprises a housing 2, wherein the housing 2 is constructed in one piece. This has the advantage that additional seals are omitted and butterfly valve 1 can also be assembled simply and economically. The housing 2 is preferably formed from plastic, wherein other materials such as metal or composite materials are also conceivable. For optimal sealing of the butterfly valve 1 , a seal 16 is arranged in the housing 2 . In order to block or regulate the throughflow of the medium, the butterfly valve 1 includes a disc 3 . Disk 3 is pivotable along axis 11 . The depicted embodiment shows a central butterfly valve 1, where eccentric embodiments are also conceivable, in which the shaft does not extend through the center of the disc relative to...

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PUM

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Abstract

The invention relates to a butterfly valve. A butterfly valve for shutting off or regulating a medium, which flows through a pipeline, contains a housing, a disc and a shaft, wherein the housing is configured in one piece and is preferably composed of plastic, the disc can be pivoted along the shaft between an open position and a closed position, the disc comprises a core composed of plastic and ashell composed of plastic, and the plastic of the core and the plastic of the shell are different.

Description

technical field [0001] The invention relates to a butterfly valve for shutting off or regulating a medium flowing through a pipeline, the butterfly valve comprising a housing, a disc and a shaft, wherein the housing is constructed in one piece and preferably consists of plastic, wherein the disc can Pivots along an axis between an open position and a closed position. Background technique [0002] In pipeline construction, butterfly valves are used to close pipelines for transporting liquid or gaseous media or to regulate flow. For this, it is necessary for the valve to withstand the pressure in the pipeline. [0003] JP 6387493 B2 discloses a butterfly valve in which the valve includes a metal plate inside to obtain high strength, and the valve is coated with a corrosion-resistant layer to protect the valve from corrosion. [0004] JP 3123908 also discloses a valve comprising a metal core surrounded by a plastic layer. [0005] In the aforementioned prior art, an outer la...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/22F16K1/32F16K1/36F16K27/02B29C45/14
CPCF16K1/222F16K1/36F16K1/32F16K27/0218B29C45/14819F16K25/005
Inventor T.杰克尔S.布吉
Owner GEORG FISCHER PIPING SYST PLC
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