High pressure grinding roller

Abstract

The utility model discloses a high pressure grinding roller, it belongs to high pressure roller mill roll face wear -resisting structure technical field, including the roller body, the roller body outer surface is in the circumference and is evenly distributed with several rows big mounting hole, and big mounting hole is set to big round hole, and the bottom of big round hole is set to spherical surface, and big mounting hole is installed with big stud, and big stud one end is set to cylinder section, and cylinder section end is set to spherical surface, and cylinder section can cooperate with mounting hole, and stud other end is set to right hexagonal prism section, and big mounting hole periphery is evenly distributed with six small mounting holes, and small mounting hole is installed with small stud. The above -mentioned structure can improve the wear resistance and deformation resistance of stud, and can also increase the contact area of stud and material layer, and enhance the stability of material layer.

Description

Technical Field

[0001] This utility model relates to the technical field of wear-resistant structure for high-pressure roller mill roller surfaces, specifically to a high-pressure grinding roller. Background Technology

[0002] High-pressure grinding rollers form a dense material layer with the material through roller surface studs, thus protecting the roller surface and studs. Traditional studs are mostly single cylindrical structures, which have the following drawbacks: Cylindrical pins have a small contact area with the material, resulting in insufficient clamping force for low-moisture materials and difficulty in forming a stable material layer. Unstable material layers are prone to detachment, leading to direct exposure of the roller surface to material impact and accelerated wear. Furthermore, cylindrical pins currently have weak bending resistance, making them prone to deformation or breakage after prolonged use.

[0003] In view of the problems existing in the prior art, this utility model designs and manufactures a high-pressure grinding roller to overcome the above defects. Summary of the Invention

[0004] To address the problems existing in the prior art, this utility model provides a high-pressure grinding roller that can improve the wear resistance and deformation resistance of the pins, while also increasing the contact area between the pins and the material layer, thereby enhancing the stability of the material layer.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a high-pressure grinding roller, including a roller body, wherein several rows of large mounting holes are evenly distributed on the outer surface of the roller body, the large mounting holes are configured as large circular holes, and the bottom of the large circular holes is configured as a spherical surface; A large stud is installed in the large mounting hole. One end of the large stud is a cylindrical segment with a spherical end. The cylindrical segment can fit into the mounting hole. The other end of the stud is a regular hexagonal prism segment. The large mounting hole is surrounded by six small mounting holes, each containing a small stud.

[0006] Preferably, after the large stud is installed in the large mounting hole, the positions of the six small studs correspond to the six sides of the regular hexagonal prism segment.

[0007] Preferably, the angles of the large column nails on the roller are consistent.

[0008] Preferably, the large pins in adjacent rows along the axial direction of the roller are staggered.

[0009] Preferably, both the large and small studs are made of wear-resistant metal materials.

[0010] Preferably, the large stud is fixed in the large mounting hole by a high-temperature resistant adhesive; The small pins are fixed in the small mounting holes using high-temperature resistant adhesive.

[0011] Preferably, the cylindrical segment has a diameter of D and a height of H; The circumcircle diameter of the regular hexagonal prism segment is 1.2-1.4D, and the height is 1 / 2H; The diameter of the small pin is 0.6D, and the height exposed on the surface of the roller is 1 / 2H.

[0012] Preferably, the diameter of the large mounting hole is 1.1D and the diameter of the small mounting hole is 0.7D.

[0013] Preferably, the distance between adjacent large mounting holes is 0.5-1D.

[0014] Preferably, the cylindrical segment and the regular hexagonal prism segment are connected by a circular arc transition, and the radius of the circular arc transition r is 0.1D.

[0015] The advantages of this utility model are: 1. The regular hexagonal prism structure of the large stud nail of this utility model can significantly increase the contact area with the material layer. Combined with the surrounding small stud nails to support the material, it can form a more stable material layer protection and effectively prevent the material layer from falling off.

[0016] 2. The multi-faceted design of the regular hexagonal prism section can enhance the clamping force on the material, and combined with the surrounding small pins, it is especially suitable for extrusion scenarios of low moisture materials.

[0017] 3. The six small pins of this utility model correspond to the six sides of the regular hexagonal prism segment, forming a plum blossom-like arrangement, which can balance the force distribution on the roller surface, reduce local wear, and improve the overall durability of the roller surface.

[0018] 4. The spherical fit structure between the bottom of the large circular hole and the end of the cylindrical section of this utility model can reduce the stress concentration on the roller body during the installation of the large column nail.

[0019] 5. The arc transition structure between the cylindrical segment and the regular hexagonal prism segment of this utility model can improve the overall bending strength of the large stud nail, reduce the risk of breakage of the large stud nail, and extend the service life of the large stud nail. Attached Figure Description

[0020] Figure 1 This is a partial front view of a high-pressure grinding roller; Figure 2 This is a partial front view of the roller body of this utility model; Figure 3 This is the front view of the large column nail of this utility model; Figure 4 This is a top view of the large column nail of this utility model; Figure 5 This is the front view of the small post nail of this utility model.

[0021] In the diagram: 1. Large stud; 2. Small stud; 3. Large mounting hole; 4. Small mounting hole; 11. Cylindrical segment; 12. Regular hexagonal prism segment. Detailed Implementation

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0023] like Figures 1 to 5 As shown, a high-pressure grinding roller includes a roller body. Several rows of large mounting holes 3 are evenly distributed around the outer surface of the roller body. Each row contains multiple large mounting holes 3, which are evenly spaced. The large mounting holes 3 are large circular holes, and the bottom of the large circular holes is a spherical surface.

[0024] A large stud 1 is installed in the large mounting hole 3. One end of the large stud 1 is a cylindrical section 11 with a spherical end. The cylindrical section 11 fits into the mounting hole. The spherical fit between the bottom of the large hole and the end of the cylindrical section 11 reduces stress concentration on the roller body during installation. The other end of the stud is a regular hexagonal prism section 12, which protrudes from the outer surface of the roller body. The cylindrical section 11 and the regular hexagonal prism section 12 are connected by a rounded transition, which ensures the bending strength of the large stud 1, reduces the risk of breakage, and extends its service life.

[0025] In addition, six small mounting holes 4 are evenly distributed around the large mounting hole 3, and small studs 2 are installed in the small mounting holes 4.

[0026] The hexagonal prism segment 12 of the large stud 1 of this invention can significantly increase the contact area with the material layer. Combined with the surrounding small studs 2 to support the material, it can form a more stable material layer protection and effectively prevent the material layer from falling off. Moreover, the multi-faceted design of the hexagonal prism segment 12 can enhance the clamping force on the material. Combined with the surrounding small studs 2, it is especially suitable for extrusion scenarios of low moisture materials.

[0027] After the large pin 1 is installed in the large mounting hole 3, the positions of the six small pins 2 correspond to the six sides of the regular hexagonal prism segment 12, forming a plum blossom-like arrangement, which can balance the force distribution on the roller surface, reduce local wear, and improve the overall durability of the roller surface.

[0028] The large pins 1 of this invention are arranged at the same angle on the roller body, and the adjacent rows of large pins 1 are staggered along the axial direction of the roller body. This structure is more conducive to balancing the force distribution of the regular hexagonal prism segment 12.

[0029] Both the large stud 1 and the small stud 2 are made of wear-resistant metal materials. The large stud 1 is preferably made of cemented carbide, and the small stud 2 is preferably made of high-chromium cast iron. The large stud 1 is fixed in the large mounting hole 3 by a high-temperature resistant adhesive, and the small stud 2 is fixed in the small mounting hole 4 by a high-temperature resistant adhesive. The installation is convenient and stable. The high-temperature resistant adhesive is preferably made of epoxy resin.

[0030] Specifically, the cylindrical segment 11 has a diameter of D and a height of H. The circumscribed circle diameter of the regular hexagonal prism segment 12 is 1.2-1.4D, preferably 1.3D, with a height of 1 / 2H and an arc transition radius r of 0.1D. The diameter of the small pin 2 is 0.6D, and its height exposed on the roller surface is also 1 / 2H. Correspondingly, the diameter of the large mounting hole 3 is 1.1D, the diameter of the small mounting hole 4 is 0.7D, and the distance between adjacent large mounting holes 3 is 0.5-1D to ensure sufficient space for the small mounting hole 4.

[0031] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. Furthermore, it should be understood that after reading the technical description of this utility model, those skilled in the art can make various alterations, modifications, and / or variations to this utility model, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. A high-pressure grinding roller, characterized in that, Includes a roller body, on the outer surface of the roller body, several rows of large mounting holes (3) are evenly distributed around the circumference, the large mounting holes (3) are large circular holes, and the bottom of the large circular holes is a spherical surface; A large stud (1) is installed in the large mounting hole (3). One end of the large stud (1) is a cylindrical section (11), and the end of the cylindrical section (11) is a spherical surface. The cylindrical section (11) can cooperate with the mounting hole. The other end of the stud is a regular hexagonal prism section (12). The large mounting hole (3) is surrounded by six small mounting holes (4) on its circumference, and small studs (2) are installed in the small mounting holes (4).

2. The high-pressure grinding roller according to claim 1, characterized in that, After the large stud (1) is installed in the large mounting hole (3), the positions of the six small studs (2) correspond to the six sides of the regular hexagonal prism segment (12).

3. A high-pressure grinding roller according to claim 1, characterized in that, The angles of the large pins (1) are consistent on the roller body.

4. A high-pressure grinding roller according to claim 3, characterized in that, The large pins (1) in adjacent rows along the axial direction of the roller are staggered.

5. A high-pressure grinding roller according to claim 1, characterized in that, Both the large stud (1) and the small stud (2) are made of wear-resistant metal materials.

6. A high-pressure grinding roller according to claim 1, characterized in that, The large column nail (1) is fixed in the large mounting hole (3) by a high-temperature resistant adhesive; The small pin (2) is fixed in the small mounting hole (4) by a high-temperature resistant adhesive.

7. A high-pressure grinding roller according to claim 1, characterized in that, The cylindrical segment (11) has a diameter of D and a height of H; The circumscribed circle diameter of the regular hexagonal prism segment (12) is 1.2-1.4D, and the height is 1 / 2H; The diameter of the small pin (2) is 0.6D, and the height exposed on the surface of the roller is 1 / 2H.

8. A high-pressure grinding roller according to claim 7, characterized in that, The diameter of the large mounting hole (3) is 1.1D, and the diameter of the small mounting hole (4) is 0.7D.

9. A high-pressure grinding roller according to claim 8, characterized in that, The distance between adjacent large mounting holes (3) is 0.5-1D.

10. A high-pressure grinding roller according to claim 7, characterized in that, The cylindrical segment (11) and the regular hexagonal prism segment (12) are connected by a circular arc transition, and the radius of the circular arc transition r is 0.1D.

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