Support Plate for a Doctor of a Fiber Web Machine and Doctor Assembly of a Fiber Web Machine and Method in a Doctor of a Fiber Web Machine
AssigneeValmet Technologies Oy
InventorsAtte Autio, Tommi Luosma, Hannu Eerikäinen
Life of this patent
Estimating the term…
Abstract
The invention relates to a support plate of a doctor in a fiber web machine. The support plate (10) is designed to be removably fitted to a blade holder (16) and to support a doctor (15) in the blade holder (16). The support plate (10) includes sensor devices (18) for detecting that a drop through has accrued either upstream from the doctor or at the doctor. The invention also relates to a doctor assembly of a fiber web machine and a method in a doctor of a fiber web machine.
Claims21
1-17. (canceled)
A doctor assembly for a fiber web machine comprising:
- a holder;
- a doctor blade mounted to extend in a cross-machine direction on the holder;
- a support plate which is removably mounted to the holder in supporting engagement with the doctor blade;
- wherein the support plate defines a cross machine length;
- wherein the support plate having a doctor blade support side and an opposed side opposite the doctor blade support side, wherein the doctor blade support side has a distal end which supports a portion of the doctor blade which extends away from the holder;
- at least one strain detection sensor mounted to extend in the cross-machine direction along the support plate and extending essentially over the entire length defined by the support plate.
A doctor assembly for a fiber web machine comprising:
- a holder;
- a doctor blade mounted to the holder;
- a support plate formed of a base material, and wherein the support plate is removably mounted to the holder;
- wherein the support plate defines a cross machine length;
- wherein the support plate having a doctor blade support side and an opposed side opposite the doctor blade support side, wherein the doctor blade support side has a distal end which supports a portion of the doctor blade which extends away from the holder;
- at least one drop-through sensor which is mounted to the support plate opposed side and extends in a cross-machine direction along the support plate.
A doctor assembly for a fiber web machine comprising:
- a holder part having jaws between which a doctor blade is mounted to extend in a cross-machine direction;
- a support plate which is removably mounted to the holder in a first slot and retained therein by a bulge wherein the support plate extends in the cross-machine direction and between the jaws;
- wherein the support plate defines a cross machine length;
- wherein the support plate having a doctor blade support side and an opposed side opposite the doctor blade support side, wherein the doctor blade support side has a distal end which supports a portion of the doctor blade which extends away from the jaws and the holder;
- a portion of the support plate forming a discontinuity opposite the doctor blade support side and protruding from the opposed side opposite the doctor blade, the discontinuity closely spaced from one of said jaws in a direction which extends from said one of the jaws toward the doctor blade support side distal end;
- at least one strain detection sensor mounted to extend in the cross-machine direction along the support plate and to extend across the discontinuity.
- wherein the strain detection sensor extends essentially over the entire length defined by the support plate.
Dependencies are inferred from the claim text.