| CPC F16K 7/063 (2013.01) [F16K 27/0236 (2013.01)] | 12 Claims |
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1. A pinch valve, comprising:
a hose guide aligned along a hose guide axis,
a clamping member with
a plunger slidingly mounted along a plunger guide axis aligned perpendicularly to the hose guide axis, and
two clamping jaws jointly forming a clamping mouth and being articulated to a front end of the plunger, wherein the front end faces the hose guide and the two clamping jaws are configured to pivot in opposite directions about respective pivot axes aligned in parallel to the hose guide axis, and
an abutment arranged on a side of the hose guide opposite the clamping member,
wherein the clamping member is configured to advance in an advancing direction, with at least a mouth base of the clamping mouth towards the abutment, to open the clamping mouth and to narrow and compress a lumen disposed within the hose guide, and thereby to close the pinch valve,
wherein the clamping jaws are coupled to a mechanical constraint such that a retraction of the plunger starting from a maximally advanced clamping position of the clamping member produces a pivoting movement of the clamping jaws in a closing direction of the clamping mouth,
wherein the clamping member is mounted between two side walls of a valve housing, the side walls extending in parallel to the hose guide axis and to the plunger guide axis and each of the side walls having a step that extends in parallel to the hose guide axis and that recedes with respect to the advancing direction of the plunger, and wherein the clamping jaws, upon displacement of the clamping member, move over the steps with outer sides that face away from the hose guide and bear against the side walls.
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