US 12,146,266 B2
Doctor device and method for determining the contact pressure of a doctor
Hubert Bischof, Muerzzuschlag (AT); Welf Zimmermann, Heidenheim (DE); and Thelio Cornu, Oberkochen (DE)
Assigned to Voith Patent GmbH, Heidenheim (DE)
Appl. No. 17/624,402
Filed by Voith Patent GmbH, Heidenheim (DE)
PCT Filed Jun. 24, 2020, PCT No. PCT/EP2020/067616
§ 371(c)(1), (2) Date Jan. 3, 2022,
PCT Pub. No. WO2021/001226, PCT Pub. Date Jan. 7, 2021.
Claims priority of application No. 10 2019 117 901.7 (DE), filed on Jul. 3, 2019.
Prior Publication US 2022/0356647 A1, Nov. 10, 2022
Int. Cl. D21G 3/00 (2006.01)
CPC D21G 3/005 (2013.01) 13 Claims
OG exemplary drawing
 
1. A doctor device, comprising:
a doctor to be applied to a contact surface by pressure from a fluid under pressure;
at least one sensor arranged on said doctor, said sensor being configured to generate a measured value for a contact pressure when said doctor is disposed to press against the roll;
a control unit configured to control a speed with which said doctor is applied to the contact surface; and
at least one switch connected to said doctor and configured to selectively apply said doctor to the contact surface, and the contact surface being a surface on a rotating roll and said at least one switch being configured to cause the doctor to approach the contact surface of the rotating roll.