Discharge grates for reduction mills

Patent metadata

Field	Value
Publication number	US-10710092-B2
Application number	US-201514798373-A
Country	US
Kind code	B2
Filing date	Jul 13, 2015
Priority date	Jul 14, 2014
Publication date	Jul 14, 2020
Grant date	Jul 14, 2020

Abstract

Discharge grate components for reducing machines including stops to inhibit pokers within the grate so that the pokers are not ejected from the grate with a high velocity.

First claim

The invention claimed is:

1. A discharge grate component for use in a reduction machine, the discharge grate component comprising:
intersecting members engaging each other to define a common interior working surface with discharge openings, and
at least one stop extending outward the common interior working surface and from one of the intersecting members such that a substantial portion of the at least one said stop extends upstream to limit straight line paths of material through at least some of the discharge openings.

2. A discharge grate component in accordance with claim 1 wherein the at least one said stop extends outward of the discharge openings in at least partially a curved configuration.

3. A discharge grate component in accordance with claim 1 wherein the intersecting members include at least one longitudinal grate element and a plurality of transverse grate elements to form the discharge openings through the grate component, and wherein the at least one stop defines at least one longitudinal support beam to resist bending and deflection of the overall discharge grate component.

4. A discharge grate component in accordance with claim 1 wherein the at least one said stop has an upstream surface with a concave curvature in a direction opposite a direction of material flow over an interior working surface.

5. A discharge grate component in accordance with claim 1 wherein the discharge grate component has at least one longitudinal support beam to resist bending and deflection of the overall discharge grate component.

6. A discharge grate component is accordance with claim 3 wherein the discharge openings define at least a portion of the at least one said stop.

7. A discharge grate component in accordance with claim 1 wherein the at least one said stop is generally continuously curved as it extends away from the discharge openings.

8. A discharge grate component for use in a reduction machine, the discharge grate component comprising:
intersecting members to define an interior surface and discharge openings, and
at least one stop extending outward of the discharge openings and at least partially curved in a direction opposite a direction of material flow over the interior surface to limit straight line paths of material through at least some of the discharge openings.

9. A discharge grate component in accordance with claim 8 wherein the intersecting members include at least one longitudinal grate element and a plurality of transverse grate elements to form the discharge openings through the grate component, and wherein the at least one stop defines at least one longitudinal support beam to resist bending and deflection of the overall discharge grate component.

10. A discharge grate component in accordance with claim 8 wherein the at least one stop is oriented so that there is generally no straight line of path through the discharge openings.

11. A discharge grate component in accordance with claim 8 wherein the at least one said stop has an upstream surface that has a concave curvature in a direction opposite a direction of material flow over the interior surface.

12. A discharge grate component in accordance with claim 8 wherein the discharge grate component has at least one longitudinal support beam to resist bending and deflection of the overall discharge grate component.

13. A discharge grate component is accordance with claim 9 wherein the discharge openings define at least a portion of the at least one said stop.

14. A discharge grate component in accordance with claim 8 wherein the at least one said stop is generally continuously curved as it extends away from the discharge openings.

15. A discharge grate component for use in a reduction machine, the discharge grate component comprising:
at least one longitudinal grate element,
a plurality of transverse grate elements intersecting the at least one said longitudinal grate element to define discharge openings through the grate component, the at least one said longitudinal grate element and the plurality of transverse grate elements having an interior working surface defining a wear surface across which material to be reduced traverses, and
at least one stop outward of the interior working surface such that there is generally no straight line of path through the discharge openings.

16. A discharge grate component in accordance with claim 15 wherein the at least one said stop extends outward of the discharge openings and has an upstream surface that is arcuate as the upstream surface extends away from the discharge openings such that the upstream surface curves in a direction opposite a direction of material flow over the interior working surface.

17. A discharge grate component in accordance with claim 15 wherein the discharge grate component has at least one longitudinal support beam to resist bending and deflection of the overall discharge grate component.

18. A discharge grate component is accordance with claim 15 wherein the discharge openings define at least a portion of the at least one said stop.

19. A discharge grate component in accordance with claim 15 wherein the at least one said stop is generally continuously curved as it extends away from the discharge openings.

20. A discharge grate component for use in a reduction machine, the discharge grate component comprising
at least one longitudinal grate element,
a plurality of transverse grate elements intersecting the at least one said longitudinal grate element to define discharge openings through the grate component, the at least one said longitudinal grate element and the plurality of transverse grate elements having an interior working surface defining a wear surface across which material to be reduced traverses, and
at least one stop extending outward of the discharge openings and having an upstream surface that is arcuate as the upstream surface extends away from the discharge openings such that the upstream surface curves in a direction opposite a direction of material flow over the interior working surface.

21. A discharge grate component in accordance with claim 20 wherein the discharge grate component has at least one longitudinal support beam to resist bending and deflection of the overall discharge grate component.

22. A discharge grate component in accordance with claim 20 wherein the discharge grate component has at least one longitudinal support beam to resist bending and deflection of the overall discharge grate component, and the at least one longitudinal support beam is secured to the at least one said longitudinal grate element.

23. A discharge grate component in accordance with claim 20 wherein the discharge grate component has at least one longitudinal support beam to resist bending and deflection of the overall discharge grate component, and the at least one said longitudinal support beam is secured to a portion of each of the plurality of transverse grate elements.

24. A discharge grate component in accordance with claim 22 wherein the at least one said longitudinal support beam defines at least a portion of the at least one said stop.

25. A discharge grate component in accordance with claim 20 wherein the at least one said stop is an integral part of the at least one said longitudinal grate element.

26. A discharge grate component in accordance with claim 22 wherein the at least one said stop is an integral part of the at least one sai

Assignees

• Esco Corp
• Esco Group Llc

Inventors

• Meeuwsen Kyle J
• Springer Casey E
• Weeks Michael R

Classifications

• B02C13/284 Primary

  Built-in screens · CPC title

• B02C13/04

  with beaters hinged to the rotor; Hammer mills · CPC title