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Pinch valve

A technology of pinch valves and collets, applied in the direction of diaphragm valves, valve devices, engine components, etc., can solve the problems of restricting flow rate obstacles, restricting cross-sections, etc., and achieve the effect of reducing the risk of damage and fouling

Active Publication Date: 2013-03-13
FESTO AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because this closure member is placed inside the access tubing, there is an obstacle restricting the flow rate even in the open state of the pinch valve
In addition the limited deformability of the flexible clamping ring limits the maximum pipe cross-section achievable for fluid flow

Method used

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Examples

Experimental program
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Embodiment Construction

[0035] The pinch valve, generally denoted 1, comprises a valve housing 2, the inner space of which delimits a working space 33 having the shape of a circular cylinder and preferably without steps in its axial direction.

[0036] One element of the valve housing 2 is a sleeve-shaped socket body 4 which defines a substantially cylindrical valve housing wall 5 delimiting the working space 3 on the circumference.

[0037] Adjacent to the end face of the peripheral valve housing wall 5 is a bottom wall 6 in the form of a perforated disk with a central opening 7 .

[0038] It is preferably an element of the sleeve-shaped socket body 4 .

[0039]The end face of the valve housing wall 5 opposite the bottom wall 6 defines a mounting opening 8 . Further elements of the pinch valve 1 can be inserted into the socket body 4 through this opening.

[0040] These other elements are also shown separately in FIG. 6 . Together they are here depicted as an assembly unit generally indicated at ...

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PUM

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Abstract

The pinch valve has a pressurizing ring (37) which coaxially encompasses the valve component (25) and which is located in an annular working chamber (3) which is enclosed radially on the outside by a circumferential valve housing wall (5). Separate drive means (52) are provided with regard to the pressurizing ring, by which the pressurizing ring is pressurized by a driving force which controls the pressurizing movement (38).

Description

technical field [0001] The present invention relates to a pinch valve comprising a hose-type valve member having a flexible outer wall and extending between two fittings, said valve member defining an passage conduit for a fluid and having two collets on its outer circumference elements which, when operatively moved transversely to the longitudinal axis of the valve member, are diametrically opposed to each other relative to the longitudinal axis of the valve member and are capable of moving towards or away from each other to more or less pinch the outer wall, Furthermore, around the valve member, a drive member is secured radially to the outside of the collet element with a drive surface inclined with respect to the longitudinal axis of the valve member, said drive member being displaceable along the valve member during a drive movement, so that The operative movement is generated by means of a drive surface on a collet element capable of pushing opposing parts of the outer w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16K7/04
CPCF16K7/065
Inventor K·乌尔里克
Owner FESTO AG & CO KG