Device for detecting profile in refiner and method therefore
US10161894B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 13, 2014 |
| Grant date | Dec 25, 2018 |
| Priority date | — |
| Expiry date | Oct 13, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/40
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention regards a measuring device, comprising a conductor body (7), for detecting the degree of fiber concentration and/or steam point (SP) of a fiber pad (33) being pulped, during use of the device (3), in a grinding gap (15) between refiner discs (11, 13) of a refiner (1). The conductor body (7) exhibits a first electric contact surface (17) adapted to provide electrical contact with a second electric contact surface (19) for transferring an electric current via the fiber pad (33) material. The invention also regards a method for detecting the degree of fiber concentration and/or steam point (SP) of a fiber pad (33). The method comprises the steps of mounting of the conductor body (7) to one of the refiner discs (13), grinding the fiber pad (33) material between the refiner discs (11, 13), detecting alteration of the conductivity and/or electrical resistivity of the fiber pad (33) material, and adjusting inflow of water and/or fiber material from said detected alteration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.