Deflaker with serrated tooth pattern

Patent metadata

Field	Value
Publication number	US-11905660-B2
Application number	US-202217989428-A
Country	US
Kind code	B2
Filing date	Nov 17, 2022
Priority date	Dec 1, 2021
Publication date	Feb 20, 2024
Grant date	Feb 20, 2024

Abstract

A deflaker plate for a deflaker machine may include a substrate and a plurality of teeth extending from the substrate, wherein a specified number of teeth of the plurality of teeth have a serrated face.

First claim

What is claimed is:

1. A deflaker plate for a deflaker machine, the deflaker plate comprising:
a substrate including a surface; and
a plurality of teeth extending from the surface of the substrate,
wherein a specified number of teeth of the plurality of teeth each comprises a serrated face,
wherein serrations on the serrated face have peaks and valleys,
wherein each of the peaks and valleys are directed across the serrated face in a direction of rotation of the deflaker plate, and
wherein each of the peaks and valleys are oriented to either be parallel with the surface of the substrate or define an acute angle relative to the surface of the substrate.

2. The deflaker plate of claim 1 , wherein the serrations comprise a serration pattern having a specified screw thread pitch or a specified linear pitch.

3. The deflaker plate of claim 1 , wherein less than an entire portion of the serrated face comprises serrations.

4. The deflaker plate of claim 1 , wherein the specified number of teeth having the serrated face comprises all of the teeth of the plurality of teeth.

5. The deflaker plate of claim 1 , wherein the specified number of teeth having the serrated face comprises less than all of the teeth of the plurality of teeth.

6. The deflaker plate of claim 1 , wherein the substrate is a disk, a ring, or a segment of a disk.

7. The deflaker plate of claim 1 , wherein the substrate is a cone, segmented cone, stepped cone or a segment of a stepped cone.

8. The deflaker plate of claim 1 , further comprising a surface hardening treatment applied to the plurality of teeth.

9. Deflaker plates for a deflaker machine, the deflaker plates comprising:
a first deflaker plate comprising:
a first substrate including a surface; and
a first plurality of teeth extending from the surface of the first substrate,
wherein a first specified number of teeth of the first plurality of teeth each comprises a serrated face,
wherein serrations on the serrated face have peaks and valleys,
wherein each of the peaks and valleys are directed across the serrated face in a direction of rotation of the first deflaker plate, and
wherein each of the peaks and valleys are oriented to either be parallel with the surface of the first substrate or define an acute angle relative to the surface of the first substrate; and

a second deflaker plate comprising:
a second substrate including a surface; and
a second plurality of teeth extending from the surface of the second substrate,
wherein a second specified number of teeth of the second plurality of teeth each comprises a serrated face,
wherein serrations on the serrated face have peaks and valleys,
wherein each of the peaks and valleys are directed across the serrated face in the direction of rotation of the first deflaker plate;
wherein each of the peaks and valleys are oriented to either be parallel with the surface of the second substrate or define an acute angle relative to the surface of the second substrate, and
wherein the first plurality of teeth is configured to intermesh with the second plurality of teeth.

10. The deflaker plates of claim 9 , wherein the serrations of the first specified number of teeth and the second specified number of teeth comprise a serration pattern having a specified screw thread pitch or a specified linear pitch.

11. The deflaker plates of claim 9 , wherein less than an entire portion of the serrated face of the first specified number of teeth or the second specified number of teeth comprises serrations.

12. The deflaker plates of claim 9 , wherein the first specified number of teeth and the second specified number of teeth having the serrated face comprises all the teeth of the first and second plurality of teeth.

13. The deflaker plates of claim 9 , wherein the first specified number of teeth and the second specified number of teeth having the serrated face comprises less than all of the teeth of the first and second plurality of teeth.

14. The deflaker plates of claim 9 , wherein the first specified number of teeth having the serrated face comprises all the teeth of the first plurality of teeth, and
wherein the second specified number of teeth having the serrated face comprises less than all the teeth of the second plurality of teeth.

15. The deflaker plates of claim 9 , wherein the first specified number of teeth having the serrated face comprises less than all the teeth of the first plurality of teeth, and
wherein the second specified number of teeth having the serrated face comprises all the teeth of the second plurality of teeth.

16. The deflaker plates of claim 9 , wherein the first substrate and the second substrate are disks, rings, or segments of disks.

17. The deflaker plates of claim 9 , wherein the first substrate and the second substrate are cones, segmented cones, stepped cones or segments of stepped cones.

18. The deflaker plates of claim 9 , further comprising a surface hardening treatment applied to the first plurality of teeth or the second plurality of teeth or both the first and second plurality of teeth.

Assignees

• Andritz Inc

Inventors

• Gingras Luc
• Ihalainen Ismo

Classifications

• D21D1/306 Primary

  Discs · CPC title

• D21D1/30

  Disc mills · CPC title

• D21D1/008

  Discs · CPC title

• D21D1/004 Primary

  Methods of beating or refining including disperging or deflaking · CPC title

• B03B5/64

  of the free settling type · CPC title