Diaphragm valve

一种膜片阀、膜片的技术，应用在隔膜阀、隔膜、阀细节等方向，能够解决影响寿命、高应力等问题，达到高密封质量的效果

Active Publication Date: 2017-10-13
FESTO AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A disadvantage of known diaphragm valves is that the sealing diaphragm is temporarily strongly stretched during switching of the valve parts and is therefore subjected to high stresses, which can adversely affect the service life
During the pivoting of the diaphragm carrier, the diaphragm section of the sealing diaphragm surrounding the diaphragm carrier is subjected to high tensile stresses, which can affect the service life

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0038] In all exemplary embodiments, the diaphragm valve, which is designated as a whole by the reference numeral 1 , has a valve housing 2 and a valve part 3 arranged in the valve housing 2 that is movable relative to the valve housing 2 . Furthermore, the diaphragm valve 1 is equipped with an electrically actuatable drive means 4 , preferably arranged in the interior of the valve housing 2 , by means of which the valve part 3 can be switched between two possible switching positions. figure 1 and 2 And 7 and 8 correspondingly show the first switching position, which is the closed position. Figures 4 to 6 And 10 and 11 correspondingly show the second switching position, which is for example the open position.

[0039] The valve part 3 is preferably designed as a composite element consisting of a membrane body 5 and at least one membrane carrier 6 carrying the membrane body 5 . These components are fixed to one another in a manner that will be explained further. Whereas the...

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PUM

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Abstract

A diaphragm valve (1) is proposed having a valve housing (2) and a valve part (3) movable relative to the valve housing. The valve part (3) comprises a diaphragm carrier (6) which can be driven to perform a switching movement (26), which carries a sealing diaphragm (8) fixed there, which delimits the valve chamber (7), the valve seat (47) is located in the valve cavity (7). The sealing diaphragm (8) has a sealing section (53) lying opposite the valve seat (47), which at least partially belongs to the loose diaphragm section (55) of the sealing diaphragm (8), when the diaphragm carrier is in the When removed from the valve seat (47) in the case of switching, the loose diaphragm section (55) can be lifted from the diaphragm carrier (6) in order to reduce the stress on the sealing diaphragm (8).

Description

technical field [0001] The invention relates to a diaphragm valve with a valve housing and at least one valve part movable therewith, wherein the valve part has a diaphragm carrier which is movable relative to the valve housing when a switching movement is carried out and which is connected to the valve housing A flexible sealing membrane delimiting the valve chamber together with the body, wherein the sealing membrane is fastened in a sealed manner on the valve housing at its outer edge region and has a spaced distance from this and is fixed on the diaphragm carrier and participates in it. Stationary diaphragm section for converting movement, wherein a valve seat facing the sealing diaphragm is arranged in the valve chamber, the sealing section of the sealing diaphragm being at least partially supported by the base surface of the diaphragm carrier facing the valve chamber in a sealable manner Pressed against the valve seat to isolate at least two fluid passages leading into t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K7/12F16K31/06
CPCF16K7/126F16K31/0641F16K31/0672F16K31/10F16K7/14F16K7/12F16K31/02
Inventor A.比勒
Owner FESTO AG & CO KG
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