US 11,701,604 B2
Device and method for detecting wear of a separating element
Bernhard Kienle, Sonthofen (DE); Frieder Hassler, Sonthofen (DE); Detlef Steidl, Sonthofen (DE); and Wolfgang Süss, Sonthofen (DE)
Assigned to BHS-Sonthofen GmbH, Sonthofen (DE)
Appl. No. 17/45,744
Filed by BHS-Sonthofen GmbH, Sonthofen (DE)
PCT Filed Apr. 2, 2019, PCT No. PCT/EP2019/058283
§ 371(c)(1), (2) Date Oct. 6, 2020,
PCT Pub. No. WO2019/193001, PCT Pub. Date Oct. 10, 2019.
Claims priority of application No. 10 2018 205 237.9 (DE), filed on Apr. 6, 2018.
Prior Publication US 2021/0052997 A1, Feb. 25, 2021
Int. Cl. B01D 33/067 (2006.01); B01D 33/80 (2006.01)
CPC B01D 33/067 (2013.01) [B01D 33/804 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A rotary pressure filter comprising:
a filter drum designed to filter a suspension;
a housing which surrounds the filter drum and in which the filter drum is rotatably mounted, a process chamber being formed between the filter drum and the housing;
a separating element arranged between the housing and the filter drum such that said separating element divides the process chamber into a plurality of process portions in a gas-tight manner; and
a sensor arranged on a side of the separating element that faces the housing, wherein the sensor comprises an electrically conductive coil and a metal rod arranged inside the electrically conductive coil, wherein the metal rod is configured to be displaced in the electrically conductive coil based on a change in a distance of the separating element from the sensor;
wherein a resonant circuit is coupled to the electrically conductive coil, the resonant circuit being configured to be detuned when the metal rod is displaced in the electrically conductive coil.