US 12,422,056 B2
Valve, in particular a vacuum valve
Hanspeter Frehner, Sevelen (CH); and Martin Netzer, Bludenz (AT)
Assigned to VAT Holding AG, Haag (CH)
Appl. No. 18/275,067
Filed by VAT Holding AG, Haag (CH)
PCT Filed Jan. 25, 2022, PCT No. PCT/EP2022/051525
§ 371(c)(1), (2) Date Jul. 31, 2023,
PCT Pub. No. WO2022/167250, PCT Pub. Date Aug. 11, 2022.
Claims priority of application No. 102021102702.0 (DE), filed on Feb. 5, 2021.
Prior Publication US 2024/0133486 A1, Apr. 25, 2024
Prior Publication US 2024/0229969 A9, Jul. 11, 2024
Int. Cl. F16K 41/10 (2006.01); F16K 1/36 (2006.01); F16K 27/02 (2006.01); F16K 41/04 (2006.01); F16K 51/02 (2006.01)
CPC F16K 41/106 (2013.01) [F16K 1/36 (2013.01); F16K 27/029 (2013.01); F16K 41/043 (2013.01); F16K 51/02 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A valve, comprising:
a valve housing and having a valve opening, which is surrounded by a valve seat;
a valve plate arranged in an interior space of the valve housing and fixed on a shaft, wherein the valve plate, together with the shaft is displaceable back and forth in directions parallel to a longitudinal axis of the shaft between a closed position, in which the valve plate has been pushed against the valve seat and closes the valve opening, and an intermediate position, in which the valve plate has been raised up from the valve seat and coincides with the valve opening, and the valve plate is pivotable back and forth, by rotation of the shaft about the longitudinal axis of the shaft, between the intermediate position and a fully open position, in which the valve plate completely or partially frees the valve opening;
the shaft is sealed in relation to the valve housing by a shaft feedthrough, in which the shaft is rotatable about the longitudinal axis thereof and is displaceable in directions parallel to the longitudinal axis, and for sealing the shaft in relation to the valve housing, the shaft feedthrough has a bellows, which is expandable and is pushable back together in the directions parallel to the longitudinal axis of the shaft and is fixed on the valve housing by a first bellows end, and a shaft sealing ring is arranged at a second bellows end, the second bellows end being located opposite the first bellows end, and the shaft is mounted in the shaft-sealing ring such that the shaft is rotatable about the longitudinal axis of the shaft relative to the bellows; and
a sealing ring arranged on the valve housing, through which the shaft is guided, and an overflow opening between the shaft and the sealing ring of the valve housing that in the closed position of the valve plate and in the fully open position of the valve plate and in all the intermediate positions of the valve plate between the closed position and the fully open position remains free between an interior space of the bellows and the interior space of the valve housing and, starting from the fully open position, the shaft is displaceable, in one of the directions parallel to the longitudinal axis of the shaft, into a service position, in which the sealing ring of the valve housing butts with sealing action against the shaft and seals the interior space of the bellows in relation to the interior space of the valve housing.