US 12,345,337 B2
Metal seal for a flap valve
Martin Adams, Bochum (DE); Rudolf August Kappe, Marl (DE); Eugen Leno, Holzwickede (DE); Julian Krell, Bochum (DE); and Fabian Sattelberger, Muenster (DE)
Assigned to Adams GmbH, Herne (DE)
Appl. No. 18/013,022
Filed by Adams GmbH, Herne (DE)
PCT Filed Jun. 30, 2021, PCT No. PCT/EP2021/068089
§ 371(c)(1), (2) Date Dec. 27, 2022,
PCT Pub. No. WO2022/003065, PCT Pub. Date Jan. 6, 2022.
Claims priority of application No. PCT/EP2020/068397 (WO), filed on Jun. 30, 2020.
Prior Publication US 2023/0243429 A1, Aug. 3, 2023
Int. Cl. F16K 1/226 (2006.01); B33Y 80/00 (2015.01); F16K 47/00 (2006.01)
CPC F16K 1/2261 (2013.01) [F16K 1/2263 (2013.01); F16K 47/012 (2021.08); B33Y 80/00 (2014.12)] 8 Claims
OG exemplary drawing
 
1. A metal seal for a flap valve, comprising:
a valve housing with a flow channel, in the flow cross-section;
a valve disk is disposed such that it can be swiveled around a swivel axis between an open position and a shutoff position,
a plurality of sealing elements, which can be pressed against one another, and are disposed on the outer circumference of the valve disk and on the inner circumference of the valve housing, and they have at least one annular metal sealing lip, which in the shutoff position bears with elastic preload on an oppositely situated, likewise annular metal mating sealing face, wherein
either the metal sealing lip is disposed on the outer circumference of the valve disk and the mating sealing face is disposed on the inner circumference of the valve housing or the mating sealing face is disposed on the outer circumference of the valve disk and the metal sealing lip is disposed on the inner circumference of the valve housing, wherein
the metal sealing lip is produced in an additive method from metal materials having shape, cross-sectional geometry and/or alloy adapted to the different circumferential regions of the metal sealing lip and wherein the metal sealing lip has circumferential portions wherein the flexural strength is different as a function of the distance of these circumferential portions relative to the swivel axis of the valve disk;
wherein the circumferential portions of the metal sealing lip disposed with largest distance along the circumference of the valve disk to the swivel axis of the valve disk have a higher flexural strength than the circumferential portions of the metal sealing lip disposed with smallest distance to this swivel axis.