公开(公告)号：US11452955B2

公开(公告)日：2022-09-27

申请号：US16761625

申请日：2018-11-22

Applicant: VALMET TECHNOLOGIES OY

Inventor： Teemu Antikainen ,  Mika Karaila ,  Joona Nikunen

IPC: B01D35/143 ,  B01D33/21 ,  B01D39/08 ,  B01D33/80 ,  G01N29/14 ,  G01N29/12 ,  G01N29/44 ,  G08B5/36 ,  H04R1/40

Abstract: An arrangement is provided for detecting a damage of a filter fabric (8) of a disc filter (1) at a disc filter unit comprising disc filters. The arrangement includes a measurement bar (20) that includes two or more microphones (21), a store (45) including stored sound samples, at least one alarming means and a processing arrangement (43) for analyzing online sound or sound samples captured by the microphones (21). The processing arrangement (43) is connected to the microphones (21), the store (45) and the at least one alarming means. A method is also disclosed for detecting a damage of a filter fabric (8) of a disc filter (1) at a disc filter unit.

公开(公告)号：US20200324229A1

公开(公告)日：2020-10-15

申请号：US16761625

申请日：2018-11-22

Applicant: VALMET TECHNOLOGIES OY

Inventor： Teemu Antikainen ,  Mika Karaila ,  Joona Nikunen

IPC: B01D35/143 ,  B01D33/21 ,  B01D39/08 ,  B01D33/80 ,  G01N29/14 ,  G01N29/12 ,  G01N29/44 ,  G08B5/36 ,  H04R1/40

Abstract: The invention relates to an arrangement for detecting a damage of a filter fabric (8) of a disc filter (1) at a disc filter unit comprising disc filters. The arrangement comprises a measurement bar (20) comprising two or more microphones (21), a store (45) including stored sound samples, at least one alarming means and a processing arrange-ment (43) for analyzing online sound or sound samples captured by the microphones (21). The processing arrangement (43) is connected to the microphones (21), the store (45) and the at least one alarming means. The invention also relates to a method for detecting a damage of a filter fabric (8) of a disc filter (1) at a disc filter unit.