Roller for roller press and roller press

Abstract

The roller comprises a roller body, a plurality of grooves are formed in the outer edges of the two end faces of the roller body in the circumferential direction, protection blocks are embedded in the grooves, the outer ring faces of the protection blocks are flush with the roller face of the roller, and the outer end faces of the protection blocks are flush with the end face of the roller body. The protection blocks are detachably and fixedly connected with the roller body through the threaded fasteners, the multiple protection blocks form an annular protection structure in the annular direction, and the roller overcomes the defects of an existing roller outer edge protection mode.

Description

Technical Field

[0001] The utility model relates to the technical field of roller presses, and particularly relates to a roller for a roller press and a roller press. Background Art

[0002] The statements herein only provide background art related to the utility model and do not necessarily constitute prior art.

[0003] A roller press, also known as an extrusion mill or roller press mill, is a new type of energy-saving cement grinding equipment that can replace the high-energy-consuming and low-efficiency ball mill pre-grinding system. During the use of the roller press, the roller surface of the roller will inevitably be worn, and the outer edge of the roller surface is worn most severely, and even phenomena such as edge chipping occur, seriously restricting the service life of the roller. At present, the main methods for protecting the outer edge of the roller surface are wear-resistant armor on the roller surface and surfacing of wear-resistant materials. The wear-resistant armor process is complex and the cost is relatively high; the surfacing process has relatively poor reliability and is prone to thermal deformation. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and provide a roller for a roller press and a roller press, which overcome the defects of using wear-resistant armor and surfacing of wear-resistant materials to protect the outer edge of the roller surface of the roller.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] In a first aspect, an embodiment of the utility model provides a roller for a roller press, which includes a roller body. A plurality of grooves are circumferentially arranged at the outer edge positions of the two end faces of the roller body, and protective blocks are embedded in the grooves. The outer ring surface of the protective block is flush with the roller surface of the roller, and the outer end face of the protective block is flush with the end face of the roller body. The protective block is detachably and fixedly connected to the roller body through threaded fasteners, and the plurality of protective blocks form an annular protection structure circumferentially.

[0007] Optionally, the groove is a T-shaped groove, which includes a first groove portion arranged radially along the roller body and a second groove portion arranged circumferentially along the roller body. Correspondingly, the protective block is a T-shaped block.

[0008] Optionally, a plurality of through holes are arranged on the protective block along the axis direction of the roller body, and threaded holes matching the through holes are arranged on the groove surface perpendicular to the axis of the roller body. After the threaded fastener passes through the through hole, it is threadedly connected to the roller body through the threaded hole to realize the fixation of the protective block and the roller body.

[0009] Optionally, the through hole is a stepped hole, including a first hole portion and a second hole portion. One end of the first hole portion extends to the outer end face of the protective body, and the other end communicates with one end of the second hole portion. The other end of the second hole portion extends to the inner end face of the protective body. The diameter of the first hole portion is greater than that of the second hole portion, and the length of the first hole portion is greater than the thickness of the head of the threaded fastener.

[0010] In a second aspect, an embodiment of the present invention provides a roller for a roller press, including a roller body. Annular grooves are provided at the outer edges of both end faces of the roller body. Annular protrusions coaxial with the annular grooves are provided on the groove surfaces of the annular grooves perpendicular to the axis of the roller body. A plurality of protective blocks distributed circumferentially along the roller body are provided in the annular grooves. The protective blocks are detachably connected to the roller body through threaded fasteners. The plurality of protective blocks together form an annular protective structure. A slot is provided on the inner end face of the protective block, and the annular protrusion is inserted into the slot. The outer end face of the protective block is flush with the end face of the roller body, and the outer ring face of the protective block is flush with the roller surface of the roller.

[0011] Optionally, the inner ring face of the annular protrusion forms a set acute angle with the groove surface of the annular groove perpendicular to the axis of the roller body, and the diameter of the inner edge of the inner ring face is smaller than that of the outer edge.

[0012] Optionally, a plurality of threaded holes are provided on the outer end face of the annular protrusion, through holes corresponding to the threaded holes are provided on the protective block, and the threaded fasteners pass through the protective block through the through holes and are threadedly connected to the roller body through the threaded holes to realize the detachable fixation of the protective block and the roller body.

[0013] Optionally, the through hole is a stepped hole, including a third hole portion and a fourth hole portion. One end of the third hole portion extends to the outer end face of the protective body, and the other end communicates with one end of the fourth hole portion. The other end of the fourth hole portion extends to the groove surface of the slot. The diameter of the first hole portion is greater than that of the second hole portion, and the length of the first hole portion is greater than the thickness of the head of the threaded fastener.

[0014] Optionally, a plurality of stud holes are provided on the outer ring face of the protective block, and studs are connected through the stud holes.

[0015] In a third aspect, an embodiment of the present invention provides a roller press provided with the roller for a roller press according to the first aspect or the second aspect.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. The roller for a roller press of the present utility model has grooves or annular grooves provided at the end faces of the roller body. Protective bodies can be placed in both the grooves and the annular grooves. The protective bodies and the roller body are detachably and fixedly connected by threaded fasteners. The annular protective structure formed by the protective bodies is assembled on the roller body through threaded fasteners. Compared with setting wear-resistant armors on the roller, the process is simpler and the cost is lower. Compared with surfacing, the connection by threaded fasteners has high reliability and will not cause thermal deformation. Therefore, the protective structure formed by the protective bodies overcomes the defects of the existing protection methods using wear-resistant armors and surfacing wear-resistant materials.

[0018] 2. For the roller of the present utility model, the protective bodies and the roller body are detachably connected by threaded fasteners, which facilitates the replacement of the protective bodies, shortens the shutdown and maintenance time, and ensures the production progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The schematic drawings of the specification forming a part of this application are used to provide a further understanding of this application. The schematic embodiments and descriptions thereof of this application are used to explain this application and do not constitute a limitation to this application.

[0020] Figure 1 is the schematic diagram of the overall structure of Embodiment 1 of the present utility model;

[0021] Figure 2 is the schematic diagram of the structure of the roller body of Embodiment 1 of the present utility model;

[0022] Figure 3 is the schematic diagram of the structure of the protection block of Embodiment 1 of the present utility model;

[0023] Figure 4 is the schematic diagram of the distribution of the stud holes on the protection block of Embodiment 1 of the present utility model;

[0024] Figure 5 is the schematic diagram of the overall structure of Embodiment 2 of the present utility model;

[0025] Figure 6 is the schematic diagram of the structure of the roller body of Embodiment 2 of the present utility model;

[0026] Figure 7 is the schematic diagram of the structure of the protection block of Embodiment 2 of the present utility model;

[0027] Figure 8 is the schematic diagram of the distribution of the stud holes on the protection block of Embodiment 2 of the present utility model;

[0028] Figure 9 is the sectional view of the insertion of the annular protrusion and the slot of Embodiment 2 of the present utility model;

[0029] Among them, 1. roller body, 2. first groove portion, 3. second groove portion, 4. first protection portion, 5. second protection portion, 6. fastening bolt, 7. threaded hole, 8. through hole, 9. stud hole, 10. annular groove, 11. annular protrusion, 12. protection block, 13. slot, 14. fastening bolt, 15. threaded hole, 16. through hole, 17. stud hole. Detailed implementation manner

[0030] Embodiment 1

[0031] This embodiment provides a roller for a roller press, as Figure 1 shown, including a roller body 1. The roller body 1 can adopt the structure of the existing roller for a roller press. A plurality of grooves are provided on the outer edges of the two end faces of the roller body 1, and the plurality of grooves are distributed circumferentially along the roller body. A protective body is embedded in the groove, and the protective body is detachably connected to the roller body through a threaded fastener. The plurality of protective bodies together form an annular protective structure. The outer ring surface of the protective body is flush with the roller surface of the roller body, and the outer end surface is flush with the end surface of the roller body.

[0032] In this embodiment, as Figure 2 described, the groove adopts a T-shaped groove, including a first groove portion 2 and a second groove portion 3. The first groove portion 2 is arranged circumferentially along the outer edge of the roller body 1, and the second groove portion 3 communicates with the middle of the first groove portion 2 and is arranged radially along the end surface of the roller body 1.

[0033] The first groove portions 2 of adjacent grooves communicate with each other.

[0034] Correspondingly, as Figure 3 shown, the protection block also adopts a T-shaped structure, including a first protection portion 4 embedded in the first groove portion 2 and a second protection portion 5 embedded in the second groove portion 3.

[0035] The end faces of the first protection portions 4 of the plurality of protection blocks are mutually attached to form an annular protection structure.

[0036] The outer ring surface of the protection block is flush with the roller surface of the roller body 1, and the outer end surface of the protection body is flush with the end surface of the roller body 1.

[0037] The protection block is detachably and fixedly connected to the roller body through a plurality of threaded fasteners.

[0038] In this embodiment, the threaded fastener adopts a fastening bolt 6.

[0039] Two fastening bolts 6 are provided on the first protection portion 4, and one fastening bolt 6 is provided on the second protection portion 5.

[0040] Correspondingly, three threaded holes 7 are provided on the groove surface of each groove perpendicular to the axis of the roller body. Through holes 8 for fastening bolts to pass through are provided on the first protection part 5 and the second protection part 6, and the through holes 8 are matched with the corresponding threaded holes 7.

[0041] The through hole 8 is a stepped hole, including a coaxial first hole part and a second hole part. The diameter of the first hole part is larger than that of the second hole part. One end of the first hole part extends to the outer end face of the protection body, and the other end is communicated with one end of the second hole part. The other end of the second hole part extends to the inner end face of the protection body and is communicated with the corresponding threaded hole 7. After the fastening bolt 6 passes through the through hole 8, it is threadedly connected to the roller body 1 through the threaded hole 7. The head of the fastening bolt 7 is pressed against the step surface formed between the first hole part and the second hole part, thereby realizing the detachable fixation of the protection block and the roller body 1.

[0042] The length of the first hole part is greater than the thickness of the head of the fastening bolt 6 so that the head of the fastening bolt 6 does not protrude from the outer end face of the protection body.

[0043] As Figure 4 shown, multiple rows of stud holes 9 are provided on the outer ring surface of the first protection part 5. The multiple rows of stud holes are distributed along the axis direction of the roller body, and the stud holes in adjacent rows are arranged staggeredly.

[0044] In this embodiment, along the axis direction of the roller body 1, the diameters of the two rows of stud holes 9 at both ends are smaller than those of the other rows of stud holes 9.

[0045] Corresponding specification studs are installed in the stud holes 9, and the connection method between the studs and the stud holes can adopt the existing technology and will not be described in detail here.

[0046] The remaining structure of the roller can adopt the existing technology and will not be described in detail here.

[0047] Embodiment 2

[0048] This embodiment provides a roller for a roller press. As Figure 5 shown, it includes a roller body 1. The roller body 1 can adopt the structure of the existing roller for a roller press. Annular grooves 10 are provided at the outer edges of the two end faces of the roller body. As Figure 6 shown, annular protrusions 11 are provided on the groove surface of the annular groove 10 perpendicular to the axis of the roller body. The outer end face of the annular protrusion 11 is perpendicular to the axis of the roller body 1.

[0049] A plurality of protection blocks 12 are arranged along the circumferential direction of the roller body in the annular groove 10. The protection blocks 12 adopt an arc structure, and adjacent protection blocks 12 are attached to form an annular protection structure.

[0050] The outer circumferential surface of the protection block 12 is flush with the roller surface of the roller body 1, and the outer end surface of the protection block 12 is flush with the end surface of the roller body 1.

[0051] As Figure 7 shown, a slot 13 is provided on the inner end surface of the protection block 12, and the circumferential protrusion 11 is embedded in the slot 13 so that the protection block 12 is plugged and connected with the circumferential protrusion 11.

[0052] The protection block 12 is detachably and fixedly connected to the roller body through a plurality of threaded fasteners.

[0053] In this embodiment, the threaded fastener is a fastening bolt 14. Preferably, the protection block 12 is detachably and fixedly connected to the roller body 1 through two fastening bolts 14.

[0054] A plurality of threaded holes 15 are provided on the outer end surface of the annular protrusion 11, and through holes 16 matching the threaded holes are provided on the protection block 12. The through holes 16 are stepped holes, including a third hole portion and a fourth hole portion arranged coaxially. One end of the third hole portion extends to the outer end surface of the protection body 12, and the other end is communicated with one end of the fourth hole portion. The other end of the fourth hole portion extends to the groove surface of the slot 13 for fitting with the outer end surface of the annular protrusion 11 and matches the corresponding threaded hole 15. The diameter of the third hole portion is larger than that of the fourth hole portion and the length of the third hole portion is greater than the thickness of the head portion of the fastening bolt 14.

[0055] The rod portion of the fastening bolt 14 passes through the protection block 12 through the through hole 16 and is threadedly connected to the roller body 1 through the threaded hole 15. The head of the fastening bolt 14 is pressed on the step surface formed by the third hole portion and the fourth hole portion, realizing the detachable and fixed connection between the protection block 12 and the roller body 1.

[0056] To facilitate the plug-in connection between the annular protrusion 11 and the protection block 12, as Figure 9 shown, the inner circumferential surface 11-1 of the annular protrusion 11 and the groove surface of the annular groove 10 perpendicular to the axis of the roller body 1 are arranged at a set acute angle. Preferably, the set acute angle is 80°-85°.

[0057] Correspondingly, the side groove surface of the slot 13 for matching the inner circumferential surface of the annular protrusion 11 and the bottom groove surface of the slot perpendicular to the axis of the roller body 1 are arranged at a set acute angle so that the side groove surface can fit with the inner circumferential surface of the annular protrusion 11.

[0058] As Figure 8 shown, a plurality of stud holes 17 are provided on the outer circumferential surface of the protection block 12, and studs are installed at the stud holes. The setting method of the stud holes and the studs is the same as that in Embodiment 1 and will not be repeated here.

[0059] For the rollers of the roller press in Embodiment 1 and Embodiment 2, the annular protection structure formed by the protection body is assembled on the roller body through threaded fasteners. Compared with setting wear-resistant armor on the roller, the process is simpler and the cost is lower. Compared with surfacing, the use of fastening bolts for connection has high reliability and will not cause thermal deformation. Therefore, the protection structure formed by the protection body overcomes the defects of the existing protection methods using wear-resistant armor and surfacing wear-resistant materials. Moreover, the protection body and the roller body are detachably connected by fastening bolts, which facilitates the replacement of the protection body, shortens the downtime for maintenance, and ensures the production progress.

[0060] Embodiment 3

[0061] This embodiment provides a roller press, which is provided with the roller for the roller press described in Embodiment 1 or Embodiment 2. The remaining structures of the roller press can adopt the existing technologies and will not be described in detail herein.

[0062] Although the specific embodiments of the present invention have been described above in conjunction with the accompanying drawings, it is not a limitation to the protection scope of the present invention. Those skilled in the art should understand that, based on the technical solutions of the present invention, various modifications or deformations that can be made without creative efforts by those skilled in the art are still within the protection scope of the present invention.

Claims

1. A roller for a roller press, comprising a roller body, characterized in that, A plurality of grooves are circumferentially arranged at the outer edge positions of the two end faces of the roller body. Protection blocks are embedded in the grooves. The outer ring surface of the protection block is flush with the roller surface of the roller, and the outer end face of the protection block is flush with the end face of the roller body. The protection block is detachably and fixedly connected to the roller body through a threaded fastener, and the plurality of protection blocks form an annular protection structure along the circumference.

2. The roller for a roller press according to claim 1, characterized in that, The groove is a T-shaped groove, including a first groove portion arranged along the radial direction of the roller body and a second groove portion arranged along the circumferential direction of the roller body. Correspondingly, the protection block is a T-shaped block.

3. A roller for a roller press according to claim 1, characterized in that, A plurality of through holes are arranged on the protection block along the axial direction of the roller body. Threaded holes matching the through holes are arranged on the groove surface perpendicular to the axis of the roller body. After the threaded fastener passes through the through hole, it is threadedly connected to the roller body through the threaded hole to realize the fixation of the protection block and the roller body.

4. The roller for a roller press according to claim 3, characterized in that, The through hole is a stepped hole, including a first hole portion and a second hole portion. One end of the first hole portion extends to the outer end face of the protection body, and the other end is communicated with one end of the second hole portion. The other end of the second hole portion extends to the inner end face of the protection body. The diameter of the first hole portion is larger than that of the second hole portion, and the length of the first hole portion is larger than the thickness of the head of the threaded fastener.

5. A roller for a roller press, comprising a roller body, characterized in that, Annular grooves are provided at the outer edges of the two end faces of the roller body. Annular protrusions coaxial with the annular grooves are provided on the groove surfaces perpendicular to the axis of the roller body. A plurality of protection blocks distributed along the circumferential direction of the roller body are arranged in the annular grooves. The protection blocks are detachably connected to the roller body through threaded fasteners. The plurality of protection blocks jointly form an annular protection structure. Slots are provided on the inner end faces of the protection blocks, and the annular protrusions are inserted into the slots. The outer end faces of the protection blocks are flush with the end faces of the roller body, and the outer ring surfaces of the protection blocks are flush with the roller surfaces of the roller.

6. The roller for a roller press according to claim 5, wherein, The inner ring surface of the annular protrusion forms a set acute angle with the groove surface perpendicular to the axis of the roller body, and the diameter of the inner edge of the inner ring surface is smaller than that of the outer edge.

7. A roller for a roller press according to claim 5, characterized in that, Threaded holes are provided on the outer end face of the annular protrusion. Through holes corresponding to the threaded holes are provided on the protection block. The threaded fastener passes through the protection block through the through hole and is threadedly connected to the roller body through the threaded hole to realize the detachable fixation of the protection block and the roller body.

8. A roller for a roller press according to claim 7, characterized in that, The through hole is a stepped hole, including a third hole portion and a fourth hole portion. One end of the third hole portion extends to the outer end face of the protection body, and the other end is communicated with one end of the fourth hole portion. The other end of the fourth hole portion extends to the groove surface of the slot. The diameter of the first hole portion is larger than that of the second hole portion, and the length of the first hole portion is larger than the thickness of the head of the threaded fastener.

9. A roller for a roller press according to claim 1 or 5, characterized in that, A plurality of stud holes are formed on the outer ring surface of the protection block, and studs are connected through the stud holes.

10. A roller press, characterized in that, There is provided a roller for a roller press as claimed in claim 1 or claim 5.

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