Non-forged hammermill hammer
View Patent ↗Improved free-swinging hammermill hammer configurations are disclosed and described for comminution of materials such as grain and refuse. The hammer configurations of the present disclosure are adaptable to most hammer mill or grinders having free-swinging systems. The configurations as disclosed and claimed are non-forged and incorporate a saddle or hammer mouth. The merging of a hammer and saddle improves strength to reduce or maintain the weight of the hammer while increasing the amount of force delivered to the material to be comminuted. The improved configurations incorporate comminution edges having increased hardness for longer operational run times. The improved configurations improve installing, removing, and cleaning hammer components within the hammermill. The improved configurations may incorporate hammermill rod hole of varying shapes and sizes and saddles of varying shapes and sizes or the use of non-planar hammer bodies that have a recessed or protruding surface.
1. An improved, non-forged hammer for use in a rotatable hammermill assembly comprising:
a hammer body comprising:
a hammer body front surface;
a first end; and
a second end for contact and delivery of momentum to material to be comminuted,
wherein said second end has a weld hardened edge;
a saddle secured to the hammer body, the saddle comprising:
a saddle bottom surface;
a saddle front surface;
a first fender extending upwardly from the saddle bottom surface to a first top fender edge, the first top fender edge being parallel to the saddle bottom surface; and
a second fender extending upwardly from the saddle bottom surface to a second top fender edge, the second top fender edge being parallel to the saddle bottom surface; and
a rod hole passing through the hammer body and the saddle.
2. The non-forged hammer of claim 1 wherein the hammer body further comprises a hammer body bottom surface flush with the saddle bottom surface.
3. The non-forged hammer of claim 1 further comprising a u-shaped edge including the first and second fenders.
4. The non-forged hammer of claim 1 wherein the hammer body further comprises a hammer body bottom surface, the hammer body bottom surface lies in a first plane parallel to a second plane, the saddle bottom surface lying in the second plane.
5. The non-forged hammer of claim 1 wherein the front surface of the saddle is puzzle-piece shaped.
6. The non-forged hammer of claim 1 wherein the front surface is buckle shaped.
7. The non-forged hammer of claim 1 wherein the first rod hole is circular and centered in the first end of the hammer body and positioned at the top of the front surface of the saddle.
8. The non-forged hammer of claim 1 wherein the weld hardened edge is welded to the periphery of the second end and comprises:
two side contact edges opposite one another that partially cover the first and second hammer body edges;
a top contact edge; and
tungsten carbide for increased hardness.
9. The non-forged hammer of claim 8 wherein the two side contact edges are stepped.
10. The non-forged hammer of claim 8 wherein the hammer body is symmetrical across the hammer body front surface such that either of the side contact edges may be the leading edge during operation of the rotatable hammermill assembly.
11. The non-forged hammer of claim 1 wherein the hammer bodies are heat-treated hammer bodies.
12. The non-forged hammer of claim 1 further comprising hammer body holes within the hammer body.
13. The non-forged hammer of claim 1 wherein the rod hole is u-shaped.
14. The non-forged hammer of claim 1 wherein the rod hole is tear-drop shaped.
15. The non-forged hammer of claim 1 wherein the rod hole is oval shaped.
16. The non-forged hammer of claim 1 wherein the hammer body further comprises first and second hammer body edges that run from the first end to the second end.
17. The non-forged hammer of claim 1 wherein the hammer body is a non-planar hammer body, the non-planar hammer body further comprising:
a recessed surface and
a protruding surface located opposite the recessed surface.
18. The non-forged hammer of claim 17 further comprising:
two side contact edges opposite one another that partially cover the first and second hammer body edges;
recessed edges between the recessed surface and the hammer body front surface and at least one other hammer body front surface; and
protruding edges between the protruding surface and at least two rear surfaces;
wherein the recessed edges are located below the side contact edges and the protruding edges are located above the rod hole.
19. The non-forged hammer of claim 18 wherein the recessed edges and protruding edges recess and protrude at an angle of 45°.
20. The non-forged hammer of claim 18 wherein the recessed edge is symmetrically located on the non-forged hammer body such that the recessed edge is located an equal distance away from the first end and the second end.
21. The non-forged hammer of claim 17 wherein the recessed surface recesses at a depth that is approximately identical to the width the first and second ends.
22. The non-forged hammer of claim 17 wherein the recessed surface is in the same plane as a rear surface located opposite the front surface.