US 12,297,928 B2
Drive for a valve and method
Matthias Südel, Ratekau (DE); and Jens Burmester, Grambek (DE)
Assigned to GEA Tuchenhagen GmbH, Büchen (DE)
Appl. No. 18/012,125
Filed by GEA Tuchenhagen GmbH, Büchen (DE)
PCT Filed Jun. 28, 2021, PCT No. PCT/EP2021/067670
§ 371(c)(1), (2) Date Dec. 21, 2022,
PCT Pub. No. WO2022/002840, PCT Pub. Date Jan. 6, 2022.
Claims priority of application No. 10 2020 003 979.0 (DE), filed on Jul. 2, 2020.
Prior Publication US 2023/0265940 A1, Aug. 24, 2023
Int. Cl. F16K 31/122 (2006.01); F16K 1/44 (2006.01); F16K 1/52 (2006.01)
CPC F16K 31/1225 (2013.01) [F16K 1/446 (2013.01); F16K 1/523 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A drive, which is operable with a pressure medium, for a valve that can be used in hygienic applications, the drive comprising:
a drive housing, in which a main piston is movable along a stroke direction by action of the pressure medium and is coupled to a rod;
a stop for limiting a movement of the main piston; and
an additional piston, which is movable by the action of the pressure medium, wherein the stop is carried along by the additional piston, and wherein, depending on a position in which the stop is located, the main piston is movable between a position for opening the valve and a cleaning position of the valve.