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Valve arrangement comprising durable magnetic holding device

A technology of holding device and valve device, applied in the direction of valve device, fluid pressure actuation device, valve operation/release device, etc., can solve the problems of high load, high acceleration, etc.

Inactive Publication Date: 2009-07-29
费斯托(中国)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This results in a high acceleration of the spool held with only a small axial magnetic force, resulting in high loads when crashing into the other end position

Method used

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  • Valve arrangement comprising durable magnetic holding device
  • Valve arrangement comprising durable magnetic holding device
  • Valve arrangement comprising durable magnetic holding device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] FIG. 1 shows a general longitudinal sectional view of a valve device 1 according to the invention, which can be called a bistable valve or a pulse valve.

[0032] The valve arrangement 1 comprises a main valve 2 actuated by fluid force and two fluid-acted pilot valves 3 a , 3 b controlling the main valve, which are electrically actuatable.

[0033] The valve device 1 has a valve housing 4 which, in the exemplary embodiment, consists of a central part 5 and two outer parts 6 a , 6 b adjoining it at two opposite end faces. The outer parts 6a, 6b each comprise one of the pilot valves 3a, 3b, shown only in dashed lines.

[0034]A slightly elongated receiving chamber 7 extends inside the valve housing 4 . The receiving chamber expediently passes through the central part 5 and is closed on both end faces by outer parts 6a, 6b.

[0035] A plurality of valve channels 8 through the valve housing 4 open laterally at positions spaced apart from one another in the axial direction...

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PUM

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Abstract

The invention relates to a valve gear which is provided with a valve disk (12) that is magnetically fixed in at least one final position by a retaining device (28). The retaining device (28) is provided with a first axial retaining surface and a second axial retaining surface (32 and 33) which are oppositely arranged on a valve shell (4) and the valve disk (12); and first axial magnetic force is formed between the two retaining surfaces. In addition, the retaining device (28) also comprises a first radial retaining surface (42) arranged on the valve shell (4) and a second radial retaining surface (43) positioned on the valve disk (12); wherein, the second radial retaining surface extends out of the first radial retaining surface (42) along the axial direction, thus forming second axial force; and the direction of the second axial force is opposite to that of the first axial force. In this way, uniform magnetic retention force which is not affected by tolerance is generated at the final position of the valve disk (12).

Description

technical field [0001] The invention relates to a valve device comprising a valve core which is axially movably arranged in a receiving chamber of a valve housing and which can be switched between two end positions predetermined by a stop device by fluid loading. and is releasably fixed in at least one of the end positions by means of a magnetic force generated by at least one permanent magnet by a holding device, wherein the holding device has first and second axial holding surfaces facing each other in the axial direction , wherein the first axial retaining surface is fixedly positioned on the valve housing at one end of the housing chamber, and the opposite second axial retaining surface is disposed on the valve core, so that the two axial retaining surfaces A first axial magnetic force can be formed between them, which fixes the valve core in the end position. Background technique [0002] A valve arrangement of this type known from EP 1760376 A1 is designed as a pilot-...

Claims

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Application Information

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IPC IPC(8): F16K11/07F16K31/12F15B13/043
CPCF16K31/423F16K31/08F16K31/084F16K11/044F16K31/122
Inventor 张翼德J·利布A·加斯曼
Owner 费斯托(中国)有限公司