US 12,345,356 B2
Control valve unit
Stefan Kolbenschlag, Darmstadt (DE)
Assigned to SAMSON AKTIENGESELLSCHAFT, Frankfurt am Main (DE)
Appl. No. 18/688,744
Filed by SAMSON AKTIENGESELLSCHAFT, Frankfurt am Main (DE)
PCT Filed Aug. 26, 2022, PCT No. PCT/EP2022/073832
§ 371(c)(1), (2) Date Mar. 1, 2024,
PCT Pub. No. WO2023/031055, PCT Pub. Date Mar. 9, 2023.
Claims priority of application No. 20 2021 104 689.9 (DE), filed on Sep. 1, 2021.
Prior Publication US 2024/0288073 A1, Aug. 29, 2024
Int. Cl. F16K 41/02 (2006.01); F16J 15/18 (2006.01); F16K 37/00 (2006.01); F16K 27/00 (2006.01)
CPC F16K 41/02 (2013.01) [F16J 15/186 (2013.01); F16K 37/0033 (2013.01); F16K 27/00 (2013.01)] 11 Claims
OG exemplary drawing
 
1. A control valve unit comprising a valve rod which is sealed from a valve housing via a seal assembly, the seal assembly having a packing, which is received axially between a pressure sleeve and a counter bearing on the valve housing, which pressure sleeve is movably mounted in the axial direction relative to the valve housing and transmits a pressing force, which is applied to the pressure sleeve by a spring element via a pressure element, to the packing, and which spring element is supported on a pretensioning device, the distance of which to the counter bearing can be adjusted, whereby the pressing force of the spring element acting on the pressure sleeve can be adjusted, characterized in that the spring element is arranged axially between a first stop and a second stop of the pretensioning device, wherein, in a preinstalled state of the pretensioning device, the spring element is supported on the first stop and on the second stop under pretension, wherein, in an operating state of the control valve unit, the second stop is arranged at a fixed distance to the first stop in the direction of the counter bearing and wherein the change in the axial position of the pressure sleeve is limited by the second stop which is arranged at a distance to the pressure element in the direction of the counter bearing.