ROLLER AND PRESS APPARATUS INCLUDING THE SAME

Abstract

A roller comprising a roller body (2) on which a plurality of ribs (4) are arranged, wherein each of the ribs (4) are formed of a number of protrusions (5) which are disposed continually in a direction of the roller shaft, the protrusions (5) are made from materials having a high wear-resisting property. This arrangement not only improve the primary yield of finished products, but also increase the lifetime and wear-resisting property, thereby the primary yield of finished products in present invention is up to 22%-30%, and the lifetime of the roller is up to 15,000-20,000 hours, further the wear loss of the stud is only 2.5 mm per 2,100 hours.

Claims

1. A roller, comprising a roller body (2) on which a plurality of ribs (4) are arranged, wherein each rib of the plurality of ribs (4) is formed of a number of protrusions (5) which are disposed continually in a direction of the roller shaft, and wherein the number of protrusions (5) are made from materials having a high wear-resisting property.

2. The roller of claim 1, wherein the materials having a high wear-resisting property include a hard alloy.

3. The roller of claim 1, further comprising a plurality of grooves (6) set on the roller body (2), wherein the number of protrusions (5) are received by a respective groove of the plurality of grooves (6).

4. The roller of claim 3, wherein the number of protrusions (5) are received by the respective groove of the plurality of grooves (6) in the form of embedment.

5. The roller of claim 4, wherein the form of embedment is a clearance fit.

6. The roller of claim 5, wherein each of the number of protrusions (5) is fixed to the respective groove of the plurality of grooves (6) in the form of a clearance fit, using adhesive.

7. The roller of claim 3, wherein a bottom width (L4) of the number of protrusion (5) is equivalent to or larger than a width (L3) at an intersection plane of the number of protrusions (5) and a surface (3) of the roller body.

8. The roller of claim 1, wherein the a cross section of the number of protrusions (5) forms a trapezoid.

9. The roller of claim 1, wherein a height of a portion of a protrusion of the number of protrusions (5) that is configured to be securably attached within the roller body (2) is approximately 15%-30% of an entire height of the protrusion.

10. The roller of claim 1, wherein a height of a portion of a protrusion of the number of protrusions (5) that is configured to be securably attached within the roller body (2) is 4-7 mm from a surface (3) of the roller body.

11. The roller of claim 1, wherein the number of protrusions (5) form one rib (4) having an identical height from a surface (3) of the roller body.

12. The roller of claim 1, wherein the number of protrusions (5) are disposed as a straight strip to form a rib of the plurality of ribs (4) on a surface (3) of the roller body.

13. The roller of claim 1, further comprising a flange (7) provided on each side of the roller body.

14. The roller of claim 13, wherein each flange (7) is embedded between adjacent ribs (4).

15. The roller of claim 13, wherein each flange (7) has a height identical to a height of the plurality of ribs (4).

16. A roller press comprising a roller, the roller comprises a roller body (2) on which a plurality of ribs (4) are arranged, wherein each rib of the plurality of ribs (4) is formed of a number of protrusions (5) which are disposed continually in a direction of the roller shaft, and wherein the number of protrusions (5) are made from materials having a high wear-resisting property.

17. A vertical roller mill comprising a roller, the roller comprises a roller body (2) on which a plurality of ribs (4) are arranged, wherein each rib of the plurality of ribs (4) is formed of a number of protrusions (5) which are disposed continually in a direction of the roller shaft, and wherein the number of protrusions (5) are made from materials having a high wear-resisting property.

18. The roller of claim 3, wherein a cross section of the number of protrusions (5) forms a trapezoid.

19. The roller of claim 4, wherein a cross section of the number of protrusions (5) forms a trapezoid.

20. The roller of claim 14, wherein each flange (7) has a height identical to the height of the plurality of ribs (4).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other aspects, features and advantages of embodiments of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0020] FIG. 1 shows a structural schematic view of a roller according to embodiment of the present invention;

[0021] FIG. 2 shows a cross-section view of a trapezoidal protrusion according to embodiment of the present invention;

[0022] FIGS. 3(a) to 3(d) are views of various protrusion layouts on a surface of the roller according to embodiments of the present invention; and

[0023] FIGS. 4(a) to 4(e) are cross-sectional views of various protrusions according to embodiments of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0024] The present invention will be described hereinafter with reference to embodiments and figures, however, it will be understood that the present invention is not limited by the embodiments, instead any numerous additional modifications and variations could be made thereto without departing from the scope of the invention.

Embodiment 1

[0025] A roller shown in FIG. 1 comprises a roller shaft 1, and a roller body 2 on which a plurality of ribs 4 are arranged, each of the ribs 4 are formed of a number of protrusions 5 which are disposed continually in a direction of the roller shaft. Further, the protrusions 5 are made from materials having a high wear-resisting property. The roller is configured in a press apparatus such as a roller press, a vertical roller mill.

[0026] For this roller, a primary yield of finished products is improved to 22%, and its lifetime is improved to 15,000 hours, and the wear loss of the stud is decreased to 2.5 mm per 2,100 hours.

Embodiment 2

[0027] A roller shown in FIG. 1 comprises a roller shaft 1, and a roller body 2 on which a plurality of ribs 4 are arranged, each of the ribs 4 are formed of a number of protrusions 5 which are disposed continually in a direction of the roller shaft, and the protrusions 5 are made from hard alloy having a high wear-resisting property, wherein a height L1, a height of the protruded portion of the protrusions 5 from the surface 3 of the roller, is 7 mm.

[0028] Further as shown in FIG. 1, the protrusions 5, which form one rib 4, have identical height from the surface 3 of the roller. This roller is configured in a press apparatus such as a roller press, a vertical roller mill.

[0029] For this roller, a primary of finished products is improved to 25%, and its lifetime is improved to 16,500 hours, and the wear loss of the stud is decreased to 2.5 mm per 2,100 hours.

Embodiment 3

[0030] A roller shown in FIG. 1 comprises a roller shaft 1, and a roller body 2 on which a plurality of ribs 4 are arranged, each of the ribs 4 are formed of a number of protrusions 5 which are disposed continually in a direction of the roller shaft, further the protrusions 5 are made from hard alloy having a high wear-resisting property. The protrusions 5 are connected to the roller body 2 through grooves 6 which are set on the roller body 2, and the protrusions 5 are embedded in the grooves 6.

[0031] As shown in FIG. 2, a bottom width L4 of the protrusion 5 is equivalent to or larger than a width L3 at an intersection plane of the protrusion 5 and the surface 3 of the roller, a height L1, a height of the protruded portion of the protrusion 5 from the surface 3 of the roller body, is 7 mm, and a height L of entire protrusion 5 is 47 mm.

[0032] The protrusions 5, which form one rib 4, have identical height from the surface 3 of the roller. As shown in FIG. 3(a), the protrusions 5 are square ribs in shape and are disposed in straight strip-shaped to form the rib 4 on surface 3 of the roller body. The roller is configured in a press apparatus such as a roller press, a vertical roller mill. As shown in FIG. 3(b), the protrusions 5 can be disposed in an M-shape. As shown in FIG. 3(c), the protrusions 5 can be disposed in an inverted V shape.

[0033] As shown in FIG. 3(d), the protrusions 5 can be disposed in an arc shape.

[0034] For this roller, a primary yield of finished products is improved to 27%, and its lifetime is improved to 18,000 hours, and the wear loss of the stud is decreased to 2.5 mm per 2,100 hours.

Embodiment 4

[0035] A roller shown in FIG. 1 comprises a roller shaft 1, and a roller body 2 on which a plurality of ribs 4 are arranged, each of the ribs 4 are formed of a number of protrusions 5 which are disposed continually in a direction of the roller shaft, and the protrusions 5 are made from hard alloy having a high wear-resisting property. The protrusions 5 are connected to the roller body 2 through grooves 6 which are set on the roller body 2, while the protrusions 5 are embedded in the grooves 6, and the embedment therebetween is in the form of a clearance fit plus adhesive.

[0036] As shown in FIG. 2, a bottom width L4 of the protrusion 5 is equivalent to or larger than a width L3 at an intersection plane of the protrusion 5 and the surface 3 of the roller body, and the cross section of the protrusions 5 is a trapezoid. A height L1, a height of the protruded portion of the protrusion 5 from the surface 3 of the roller body, is 4 mm, and a height L of entire protrusion 5 is 14 mm.

[0037] As shown in FIG. 1, the protrusions 5, which form one rib 4, have identical height from the surface 3 of the roller, and the protrusions 5 are disposed in straight strip-shaped to form the rib 4 on the surface 3 of the roller body. The roller is configured in a press apparatus such as a roller press, a vertical roller mill.

[0038] For this roller, a primary yield of finished products is improved to 28%, and its lifetime is improved to 19,000 hours, and the wear loss of the stud is decreased to 2.5 mm per 2,100 hours.

Embodiment 5

[0039] A roller shown in FIG. 1 comprises a roller shaft 1, and a roller body 2 on which a plurality of ribs 4 are arranged, each of the ribs 4 are formed of a number of protrusions 5 which are disposed continually in a direction of the roller shaft, and the protrusions 5 are made from hard alloy having a high wear-resisting property. The protrusions 5 are connected to the roller body 2 through grooves 6 which are set on the roller body 2, while the protrusions 5 are embedded in the grooves 6, and the embedment therebetween is in the form of a clearance fit plus adhesive.

[0040] As shown in FIG. 2, a bottom width L4 of the protrusion 5 is equivalent to or larger than a width L3 at an intersection plane of the protrusion 5 and the surface 3 of the roller body, and the cross section of the protrusions 5 is a trapezoid. A height L1, a height of the protruded portion of the protrusions 5 from the surface 3 of the roller body, is 5 mm, and a height L of entire protrusion 5 is 30 mm, with L2 being 25 mm.

[0041] FIGS. 4(a) to 4(e) are cross-sectional views of various protrusions according to embodiments of the present invention. FIG. 4(a) illustrates a rectangle shaped protrusion. FIG. 4(b) illustrates a trapezoid shaped protrusion. FIG. 4(c) illustrates an L-shaped protrusion. FIG. 4(d) illustrates a T-shaped protrusion. FIG. 4(e) illustrates a convex shaped protrusion.

[0042] As shown in FIG. 1, the protrusions 5, which form one rib 4, have identical height from the surface 3 of the roller, and the protrusions 5 are disposed in straight strip-shaped to form the rib 4 on the surface 3 of the roller body. Flanges 7 are provided on either side of the roller body, and the flanges 7 have a height identical to the height of the ribs 4. The roller is configured in a press apparatus such as a roller press, a vertical roller mill.

[0043] For this roller, a primary yield of finished products is improved to 30%, and its lifetime is improved to 20,000 hours, and the wear loss of the stud is decreased to 2.5 mm per 2,100 hours.

[0044] While the present invention has been particularly shown and described with reference to certain embodiments thereof, various changes in form and detail may be made therein without departing from the spirit and scope of the present disclosure as defined by the following claims and their equivalents.