US 12,259,065 B2
Pinch valve system
Peter Mayr, Baden (CH); and Thomas Schneeberger, Bern (CH)
Assigned to Levitronix GmbH, Zurich (CH)
Filed by Levitronix GmbH, Zurich (CH)
Filed on Aug. 10, 2022, as Appl. No. 17/885,331.
Claims priority of application No. 21194899 (EP), filed on Sep. 3, 2021.
Prior Publication US 2023/0077009 A1, Mar. 9, 2023
Int. Cl. F16K 7/04 (2006.01); F16K 31/08 (2006.01)
CPC F16K 7/045 (2013.01) [F16K 31/082 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A pinch valve system for clamping off a tube in a fluid system, comprising:
a closing element arranged movably in an axial direction and comprising a closing piece configured to clamp off the tube;
a permanent magnetic holding device comprising a permanent magnet configured to hold the closing element only by a permanent magnetic force in two different stable equilibrium positions, the two different stable equilibrium positions being an open position and a closed position, without energy being supplied to the permanent magnetic holding device for holding the closing element in the respective two different stable equilibrium positions;
an electromagnetic actuating device configured to carry out a switching process, with which the closing element is configured to be moved from the open position to the closed position or from the closed position to the open position;
an energy storage device configured to store an electrical energy which is at least sufficient to carry out the switching process; and
a controller programmed with a predetermined rest position, which is the open position or the closed position, and the controller configured to trigger the switching process with which the closing element is brought to the rest position by the energy stored in the energy storage device.