Doctor control systems for papermaking machines and related methods
US10202724B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2017 |
| Grant date | Feb 12, 2019 |
| Priority date | — |
| Expiry date | Dec 9, 2037 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD21G3/04
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A papermaking machine includes a Yankee dryer, a doctor, and a doctor blade loading control system. The doctor blade loading control system includes a first doctor loading cylinder coupled to the doctor and configured to selectively apply a loading force to the doctor, a second doctor loading cylinder coupled to the doctor and configured to selectively apply a loading force to the doctor, a first air line in communication with the first doctor loading cylinder, a second air line in communication with the second doctor loading cylinder, a first electronic pressure controller configured to control a loading pressure of the first doctor loading cylinder on the doctor based on a first loading pressure setpoint, and a second electronic pressure controller configured to control a loading pressure of the second doctor loading cylinder on the doctor based on a second loading pressure setpoint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.