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Fluid-actuated diaphragm drive

A driving device and diaphragm technology, applied in the direction of fluid pressure actuating device, valve operation/release device, valve device, etc., can solve the problems of heavy raw material cost, large driving shell, etc., and achieve rigidity optimization and easy cleaning Effect

Inactive Publication Date: 2016-03-16
FESTO AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a suitably small structural volume is only complied with in conjunction with a low actuating pressure, since otherwise a large wall thickness would have to be selected in order to ensure the required structural rigidity, which leads to large external dimensions of the drive housing.
For applications with higher actuating pressures, therefore, a drive housing made of metal is used, which has a high stability even with relatively small wall thicknesses, but in which a large weight and Disadvantages of relatively high raw material costs

Method used

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  • Fluid-actuated diaphragm drive
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Examples

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Embodiment Construction

[0031] The diaphragm drive described in its entirety with the reference numeral 1 is of the fluid-actuated type and can be driven by a fluid force provided by a drive medium in a fluid state that can be supplied as required and that can be discharged . Such a drive medium is in particular compressed air. However, the diaphragm drive 1 can also be driven by means of another gaseous drive medium or by means of a liquid drive medium.

[0032] The diaphragm drive 1 , which is the housing whose entirety is denoted by reference numeral 2 , has an advantageous hybrid construction with a mixture of plastic material and rust-resistant steel. These materials are distributed, and specifically on the one hand, as a drive housing 3 formed of plastic material and as an enveloping shell 4 of rust-resistant sheet steel surrounding said drive housing 3 . The casing has a protective and support function in order to optimize the use possibilities of the diaphragm drive 1 , which is theoretical...

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Abstract

A fluid-actuated diaphragm drive (1) is proposed, with a drive unit (5) whose drive housing (3) consists of two hood-shaped drive housing parts (7, 8) attached coaxially to each other. The drive housing (3) is enclosed on the outside by a fluid-tight envelope housing (4), which is separate from the drive unit (5) and which is composed of two envelope housing parts (47, 48) that are attached to each other and welded to each other in a fluid-tight manner and are made of a stainless steel sheet. At the same time, the envelope housing also forms a support device (4a), which clasps the drive housing and through which the two drive housing parts (7, 8) are axially supported from axially opposite sides, such that the diaphragm drive (1) can be operated with high fluid pressure.

Description

technical field [0001] The invention relates to a fluid-actuated diaphragm drive with a drive unit having a longitudinal axis, the drive unit having a drive housing with two hood-shaped drive housing parts made of plastic material, The drive housings are coaxially mounted and fastened against each other with openings facing each other coaxially against each other and fastened against each other under the common delimitation of the housing interior, wherein fluid-tight partitions for the fluid-tight housing interior are arranged in the housing interior. It is the driving diaphragm of two axially adjacent working chambers, the driving diaphragm is connected with the driven rod that can slide through at least one of the driving casings in a transmission manner, and the driving diaphragm passes through The controlled fluid loading of at least one of the working chambers can be axially deflected in order to generate a driven movement of the driven rod. Background technique [00...

Claims

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Application Information

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IPC IPC(8): F15B15/10F16K31/126
CPCF15B15/10
Inventor H.雷里格
Owner FESTO AG & CO KG
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