Wear-resistant surface structure of compression roller of ring die granulator

Abstract

The utility model relates to pellet machine pressure roller device technical field discloses a kind of wear-resistant type ring die pellet machine pressure roller surface structure, including roller body, the outer wall of roller body is provided with anti-blocking mechanism, the left and right ends of roller body are all threadedly connected with flange plate, the outer wall of flange plate is provided with compression resistance mechanism, the anti-blocking mechanism includes storage tank, the inner wall of storage tank is rotatably connected in the outer wall of roller body, the left and right ends of storage tank are all threadedly connected with limit sleeve, the adjacent side of two limit sleeves is threadedly connected with fixed plate. In the utility model, spiral shaft outer wall is threadedly connected with limit sleeve, when rotating, it can guide material by its own structure, cooperate with collecting groove to realize the preliminary collection of small particles, the conveying hole of fixed plate inner wall can guide the particles in collecting groove into storage tank, avoid the accumulation of particles on surface texture, avoid the clearance between edge and ring die to jam material, improve equipment running continuity and reliability.

Description

Technical Field

[0001] This utility model relates to the technical field of pellet mill pressure roller devices, and in particular to a wear-resistant ring die pellet mill pressure roller surface structure. Background Technology

[0002] Wear-resistant ring die pellet mill pressure rollers are the core transmission and pressing components of ring die pellet mills, widely used in feed processing, biomass energy, and organic fertilizer molding. Their core function is to work with the ring die to form an extrusion pair. Driven by a motor, the pressure rollers rotate around their own axis while making circumferential motion along the inner wall of the ring die, squeezing the loose material inside the ring die into the forming hole of the ring die, ultimately producing pellet products with uniform density and regular shape. As a key component that directly contacts the material and withstands extrusion friction, the wear resistance of the pressure roller surface structure, its material gripping ability, and its smooth discharge directly determine the pellet mill's pelleting efficiency, pellet forming quality, and overall equipment operation and maintenance costs. It is one of the core indicators for measuring the performance of a ring die pellet mill.

[0003] Early ring die pellet mills typically used simple structures with integral cylindrical steel rollers and smooth surfaces. These rollers consisted only of the roller body and a central shaft, lacking specialized wear-resistant or material-guiding designs. This structure presented two major problems: first, the smooth surface resulted in insufficient material gripping force, leading to slippage, reduced pelletizing efficiency, and insufficient friction preventing proper material compression, resulting in loose and broken pellets; second, ordinary steel has poor wear resistance, causing rapid wear of the roller surface after prolonged compression and friction, necessitating frequent roller replacements and high maintenance costs. To address these issues, existing rollers have gradually been improved to a composite structure of wear-resistant substrate and surface functional textures. Toothed grooves, trapezoidal grooves, or prismatic fish-scale patterns are machined onto the roller surface to increase surface roughness and improve material gripping force. Using wear-resistant steel or spraying tungsten carbide coating on the surface to enhance wear resistance effectively alleviates the problems of slippage and rapid wear. However, existing pressure rollers still have key defects. Their surface textures are mostly closed or fixed-spaced groove structures. When pressing wet or long-fiber materials, the material will adhere to the grooves and form material accumulation. As the pressure roller continues to rotate, the accumulated material will gradually accumulate towards the edge of the pressure roller and eventually get stuck in the gap between the edge of the pressure roller and the ring die. Although existing pressure rollers avoid direct material leakage through the extrusion fit between the texture and the ring die and achieve pellet forming, the lack of a reliable cleaning and guiding surface structure will also cause abrasive wear on the edge of the pressure roller and the inner wall of the ring die after the accumulated material hardens, shortening the service life of the pressure roller and the ring die and seriously affecting the continuity of production. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a wear-resistant ring die pellet mill pressure roller surface structure, which aims to improve the problem in the prior art where surface textures cause material accumulation, resulting in material jamming between the edge of the pressure roller and the ring die gap, and there is no reliable cleaning and guiding surface structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a wear-resistant ring die pellet mill pressure roller surface structure, including a roller body, an anti-blocking mechanism provided on the outer wall of the roller body, flanges threadedly connected to the left and right ends of the roller body, and an anti-pressure mechanism provided on the outer wall of the flanges; The anti-clogging mechanism includes a storage tank, the inner wall of which is rotatably connected to the outer wall of the roller. Limit sleeves are threadedly connected to both the left and right ends of the storage tank. A fixing plate is threadedly connected to the adjacent side of the two limit sleeves. Multiple conveying holes are provided on the inner wall of the fixing plate. A spiral shaft is threadedly connected to the outer wall of the limit sleeve. A collection groove is provided on the outer wall of the spiral shaft. Multiple retainers are fixedly connected to the opposite side of the two limit sleeves.

[0006] As a further description of the above technical solution: The anti-compression mechanism includes two fixed shafts. The adjacent sides of the two fixed shafts are threaded to the opposite sides of the two flanges. Connectors are fixedly connected to the opposite sides of the two fixed shafts. Partitions are rotatably connected to the outer walls of the two connectors. Angular contact ball bearings are rotatably connected to the opposite sides of the two partitions. Angular contact ball bearings are rotatably connected to the adjacent sides of the two partitions. Cylindrical roller bearings are rotatably connected to the outer walls of the two fixed shafts.

[0007] As a further description of the above technical solution: The inner walls of both flanges are threaded with multiple fixing screws, and the top left and right ends of the outer wall of the roller are provided with connecting blocks. The bottom of both connecting blocks are fixedly connected with stabilizing frames.

[0008] As a further description of the above technical solution: Both of the stabilizers are equipped with casters at the front and rear ends of their bottoms, and soft pads are fixedly connected to the left and right ends of the inner walls of the rollers.

[0009] As a further description of the above technical solution: Each of the two soft pads is provided with a telescopic rod on an adjacent side, and each of the two telescopic rods is provided with a spring on its outer wall.

[0010] As a further description of the above technical solution: Rollers are fixedly connected to adjacent sides of both telescopic rods, and the same buffer block is fixedly connected to adjacent sides of both rollers.

[0011] As a further description of the above technical solution: The outer wall of the roller is also provided with protective rings at both the left and right ends, and the inner wall of the limiting sleeve is also rotatably connected to the outer wall of the roller at both the left and right ends.

[0012] As a further description of the above technical solution: The first angular contact ball bearing and the second angular contact ball bearing are installed back to back, and the fixed shaft can be installed at both ends of the roller body through a flange.

[0013] This utility model has the following beneficial effects: 1. In this utility model, the outer wall of the spiral shaft is threadedly connected to the limiting sleeve. When it rotates, it can guide the material with its own structure. It works with the collection trough to achieve the initial collection of fine particles. The conveying hole on the inner wall of the fixed plate can guide the particles in the collection trough into the storage tank, avoiding the accumulation of particles on the surface texture. The threaded connection structure between the limiting sleeve, the storage tank, and the fixed plate reduces the diffusion of material to the edge of the pressure roller, thereby avoiding material jamming between the edge and the ring die gap, and improving the continuity and reliability of equipment operation.

[0014] 2. In this utility model, the fixed shaft is threadedly connected to the flange and forms a stable support frame with the connector. The angular contact ball bearing 1 and angular contact ball bearing 2 cooperate with the partition plate to efficiently bear the axial load, while the cylindrical roller bearing enhances the radial load bearing capacity. This allows for the separate matching of axial and radial loads, which can prevent structural deformation or disintegration due to overload when the equipment is over-operated, and significantly improves the overall compressive strength and operational reliability of the pressure roller. Attached Figure Description

[0015] Figure 1 This is a perspective view of the surface structure of a wear-resistant ring die pellet mill pressure roller proposed in this utility model; Figure 2 This is a front view of the surface structure of a wear-resistant ring die pellet mill pressure roller proposed in this utility model; Figure 3 This is a schematic diagram of the anti-clogging mechanism for the surface structure of the wear-resistant ring die pellet mill pressure roller proposed in this utility model; Figure 4 This is a structural exploded view of the anti-clogging mechanism of the wear-resistant ring die pellet mill pressure roller surface structure proposed in this utility model; Figure 5 This is a schematic diagram of the anti-compression mechanism of the wear-resistant ring die pellet mill pressure roller surface structure proposed in this utility model; Figure 6 This is a structural exploded view of the anti-compression mechanism of the wear-resistant ring die pellet mill pressure roller surface structure proposed in this utility model; Figure 7 This is a cross-sectional view of the roller body of a wear-resistant ring die pellet mill pressure roller surface structure proposed in this utility model; Figure 8 This is a structurally exploded view of the roller body of a wear-resistant ring die pellet mill pressure roller surface structure proposed in this utility model.

[0016] Legend: 1. Roller body; 2. Anti-clogging mechanism; 201. Spiral shaft; 202. Collection trough; 203. Fixing plate; 204. Conveying hole; 205. Limiting sleeve; 206. Fixer; 207. Storage tank; 3. Anti-pressure mechanism; 301. Fixing shaft; 302. Connector; 303. Partition; 304. Angular contact ball bearing one; 305. Angular contact ball bearing two; 306. Cylindrical roller bearing; 4. Flange; 5. Fixing screw; 6. Connecting block; 7. Stabilizing frame; 8. Caster wheel; 9. Soft pad; 10. Telescopic rod; 11. Spring; 12. Roller; 13. Buffer block; 14. Protective ring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Reference Figure 1 , Figure 3 and Figure 4 The present invention provides an embodiment of a wear-resistant ring die pellet mill pressure roller surface structure, comprising a roller body 1, which serves as the core load-bearing component of the pressure roller and is used to cooperate with the ring die to achieve material extrusion molding. The outer wall of the roller body 1 is provided with an anti-blocking mechanism 2, which is used to solve the problems of material accumulation on the surface of the pressure roller and material jamming at the edges. The left and right ends of the roller body 1 are threadedly connected with flanges 4, which are used to connect the roller body 1 and the anti-compression mechanism 3 and transmit the load. The outer wall of the flanges 4 is provided with an anti-compression mechanism 3, which is used to improve the compressive strength and load-bearing capacity of the pressure roller. The anti-clogging mechanism 2 includes a storage tank 207, which is used to store the collected fine particles and prevent them from accumulating. The inner wall of the storage tank 207 is rotatably connected to the outer wall of the roller body 1. This connection ensures that the storage tank 207 can rotate synchronously with the roller body 1 without affecting the normal operation of the roller body 1. The left and right ends of the storage tank 207 are threadedly connected to limit sleeves 205. The limit sleeves 205 are used to fix the relative position of the storage tank 207 and the fixing plate 203. The adjacent side of the two limit sleeves 205 is threadedly connected to the fixing plate 203. The fixing plate 203 is used to support the conveying hole 204 and separate the storage tank 207 from the screw shaft 201. The inner wall of the fixing plate 203 has multiple conveying holes 204, which are used to guide the fine particles in the collection tank 202 into the storage tank 207. The outer wall of the limit sleeve 205 is threaded... The roller 1 is connected to a spiral shaft 201, which guides the material towards the center to avoid accumulation at the edges. The outer wall of the spiral shaft 201 is provided with a collection groove 202, which is used to collect small particles generated during the material extrusion process. Multiple retainers 206 are fixedly connected to the opposite sides of the two limiting sleeves 205. The retainers 206 are used to enhance the connection stability between the limiting sleeves 205 and the roller 1 and prevent loosening. Multiple fixing screws 5 are threadedly connected to the inner walls of the two flanges 4. The fixing screws 5 are used to strengthen the connection strength between the flanges 4 and the roller 1. Connecting blocks 6 are provided at the top left and right ends of the outer wall of the roller 1. The connecting blocks 6 are used to connect the roller 1 and the stabilizer 7. The bottom of the two connecting blocks 6 is fixedly connected to the stabilizer 7. The stabilizer 7 is used to cooperate with the casters 8 to realize the convenient handling of the roller 1. Specifically, roller body 1 cooperates with the ring die, serving as the core load-bearing component to achieve material extrusion molding. Roller body 1 cooperates with anti-blocking mechanism 2, which is located on the outer wall of roller body 1 to solve the problems of material accumulation on the roller surface and material jamming at the edges. Roller body 1 cooperates with flange 4, which is threadedly connected to the left and right ends of roller body 1, connecting roller body 1 with anti-compression mechanism 3 and transmitting load. Flange 4 cooperates with anti-compression mechanism 3, which is located on the outer wall of flange 4 to improve the pressure resistance and load-bearing capacity of the roller. In anti-blocking mechanism 2, storage tank 207 cooperates with roller body 1. The inner wall of the storage tank 207 is rotatably connected to the outer wall of the roller body 1, ensuring that the storage tank 207 rotates synchronously with the roller body 1 without affecting the operation of the roller body 1. At the same time, the storage tank 207 stores the collected fine particles to prevent accumulation. The storage tank 207 cooperates with the limiting sleeve 205, which is threadedly connected to the left and right ends of the storage tank 207, fixing the relative position of the storage tank 207 and the fixing plate 203. The limiting sleeve 205 cooperates with the fixing plate 203, which is threadedly connected to the adjacent side of the two limiting sleeves 205, supporting the conveying hole 204 and separating the storage tank 207. 07 and the screw shaft 201, the fixed plate 203 and the conveying hole 204 are fitted together. The conveying hole 204 is opened on the inner wall of the fixed plate 203 to guide the fine particles in the collection tank 202 into the storage tank 207. The limiting sleeve 205 is fitted with the screw shaft 201. The screw shaft 201 is threaded to the outer wall of the limiting sleeve 205 to guide the material towards the center and avoid edge accumulation. The screw shaft 201 is fitted with the collection tank 202. The collection tank 202 is opened on the outer wall of the screw shaft 201 to collect the fine particles generated during the material extrusion process. The limiting sleeve 205 and the fixing device 20 6. Fixing device 206 is fixed to the two limiting sleeves 205 on opposite sides to enhance the connection stability between the limiting sleeves 205 and the roller body 1 and prevent loosening. Flange 4 is fitted with fixing screw 5. The fixing screw 5 is threaded to the inner wall of flange 4 to strengthen the connection strength between flange 4 and roller body 1. Roller body 1 is fitted with connecting block 6. Connecting block 6 is set at the top left and right ends of the outer wall of roller body 1 to connect roller body 1 and stabilizer 7. Connecting block 6 is fitted with stabilizer 7. Stabilizer 7 is fixed at the bottom of the two connecting blocks 6. With the help of caster wheel 8, roller body 1 can be easily transported.

[0019] Reference Figure 1 , Figure 5 and Figure 6The anti-compression mechanism 3 includes two fixed shafts 301. The fixed shafts 301 serve as the core support components of the anti-compression mechanism 3, bearing various loads generated during equipment operation. The adjacent sides of the two fixed shafts 301 are threaded to the opposite sides of two flanges 4. This threaded connection ensures the stability of the connection between the fixed shafts 301 and the flanges 4, and facilitates subsequent disassembly and maintenance. Connectors 302 are fixedly connected to the opposite sides of the two fixed shafts 301. Connectors 302 are used to connect the fixed shafts 301 to external equipment, ensuring the stability of power transmission and structural connection. Partitions 303 are rotatably connected to the outer walls of both connectors 302. Partitions 303 isolate and protect internal bearing components, preventing external dust and impurities from affecting bearing operation. Angular contact ball bearings 305 are rotatably connected to the opposite sides of the two partitions 303. 05 is used to cooperate with angular contact ball bearing 304 to jointly bear the axial load of the equipment. Angular contact ball bearing 304 is rotatably connected to the adjacent side of the two partitions 303. Angular contact ball bearing 304 and angular contact ball bearing 305 work together to improve the axial load bearing capacity. Cylindrical roller bearing 306 is rotatably connected to the outer wall of the two fixed shafts 301. Cylindrical roller bearing 306 is specially used to bear the radial load generated during the operation of the equipment and enhance the radial compressive strength of the pressure roller. Angular contact ball bearing 304 and angular contact ball bearing 305 are installed back to back. This installation method can optimize the bearing's effect on the axial load distribution and avoid local stress concentration that could lead to component damage. The fixed shaft 301 can be installed at both ends of the roller body 1 through flange 4. This installation path makes the compressive strength mechanism 3 and the roller body 1 form an integrated structure, further improving the overall compressive strength and operational reliability of the pressure roller. Specifically, the fixed shaft 301 mates with the flange 4, with the adjacent side of the fixed shaft 301 threadedly connected to the side of the flange 4 furthest away. This threaded connection ensures the stability of the connection between the fixed shaft 301 and the flange 4, while also facilitating subsequent disassembly and maintenance. Furthermore, the fixed shaft 301 is mounted at both ends of the roller body 1 via the flange 4, forming an integrated structure between the anti-compression mechanism 3 and the roller body 1, improving the overall compressive strength and operational reliability of the pressure roller. The fixed shaft 301 mates with the connector 302, which is fixed to the side of the fixed shaft 301 furthest away, enabling the connection between the fixed shaft 301 and external equipment, ensuring the stability of power transmission and structural connection. The connector 302 mates with the partition 303, which is rotatably connected to the connector 302. The outer wall isolates and protects the internal bearing components, preventing external dust and impurities from affecting the bearing operation. The partition 303 cooperates with angular contact ball bearing 304 and angular contact ball bearing 305. Angular contact ball bearing 304 is rotatably connected to the adjacent side of the partition 303, and angular contact ball bearing 305 is rotatably connected to the opposite side of the partition 303. The two work together to improve the axial load bearing capacity, and the back-to-back installation optimizes the distribution effect of axial load and avoids local stress concentration that could lead to component damage. The fixed shaft 301 cooperates with cylindrical roller bearing 306, which is rotatably connected to the outer wall of the fixed shaft 301. It is specifically designed to bear the radial load generated during equipment operation and enhance the radial compressive strength of the pressure roller.

[0020] Reference Figure 2 , Figure 7 and Figure 8Both stabilizers 7 are equipped with casters 8 at their front and rear ends. These casters 8 allow for flexible movement of the stabilizers 7, facilitating easy transfer of the rollers 1 and reducing the difficulty of manual handling. Soft pads 9 are fixedly connected to the left and right ends of the inner wall of the rollers 1. These pads cushion and protect the connection between the inner wall of the rollers 1 and the telescopic rods 10, preventing wear from hard contact. Telescopic rods 10 are located on adjacent sides of the two soft pads 9. These rods, in conjunction with springs 11, allow for telescopic adjustment to meet different buffering needs under varying operating conditions. Springs 11 are installed on the outer walls of both telescopic rods 10. These springs absorb vibrations generated during roller operation through their elastic deformation, improving equipment stability. Rollers 12 are fixedly connected to adjacent sides of the telescopic rod 10. The rollers 12 are used to connect the telescopic rod 10 to the buffer block 13. At the same time, they can reduce the frictional resistance during the buffering process by rotating themselves. The same buffer block 13 is fixedly connected to adjacent sides of the two rollers 12. The buffer block 13 is used to concentrate the impact force inside the roller body 1 and further enhance the overall buffering effect. Protective rings 14 are also provided on the left and right ends of the outer wall of the roller body 1. The protective rings 14 are used to protect the structure of the left and right ends of the outer wall of the roller body 1 and prevent materials or external debris from scratching and damaging the edge of the roller body 1. The inner wall of the limiting sleeve 205 is also rotatably connected to the left and right ends of the outer wall of the roller body 1 to ensure the coaxiality of the anti-blocking mechanism 2 and the roller body 1 and ensure the stable operation of the anti-blocking function. Specifically, the stabilizer 7 works in conjunction with the casters 8. The casters 8, located at the front and rear ends of the bottom of the stabilizer 7, allow for flexible movement of the stabilizer 7, thereby facilitating the transfer of the roller 1 and reducing the difficulty of manual handling. The roller 1, soft pad 9, and telescopic rod 10 work together. The soft pad 9 is fixed to the left and right ends of the inner wall of the roller 1, providing cushioning protection at the connection between the inner wall of the roller 1 and the telescopic rod 10, preventing hard contact and wear on components. Simultaneously, the telescopic rod 10 is located on the side adjacent to the soft pad 9, providing an installation base for subsequent cushioning structures. The telescopic rod 10 and spring 11 work together. The spring 11 is sleeved on the outer wall of the telescopic rod 10, allowing for telescopic adjustment to adapt to different working conditions. The spring 11 absorbs the vibration generated by the roller 1 during operation through its own elastic deformation, jointly improving the operational stability of the equipment. The shaft 12 cooperates with the buffer block 13. The roller 12 is fixed on the adjacent side of the telescopic rod 10, connecting the telescopic rod 10 and the buffer block 13. At the same time, the roller 12 reduces the frictional resistance during the buffering process by rotating on its own. The buffer block 13 is fixed on the adjacent side of the two rollers 12, which concentrates the impact force inside the roller body 1 and further enhances the overall buffering effect. The roller body 1 cooperates with the protective ring 14. The protective ring 14 is set on the left and right ends of the outer wall of the roller body 1 to protect the left and right ends of the outer wall of the roller body 1 and prevent materials or external debris from scratching and damaging the edge of the roller body 1. The roller body 1 and the limiting sleeve 205 cooperate. The inner wall of the limiting sleeve 205 is rotatably connected to the left and right ends of the outer wall of the roller body 1 to ensure that the limiting sleeve 205 rotates synchronously with the roller body 1. At the same time, it ensures the coaxiality of the anti-blocking mechanism 2 and the roller body 1, and ensures the stable operation of the anti-blocking function.

[0021] Working principle: When the drive roller 1 is started, the spiral shaft 201 that cooperates with the roller 1 rotates synchronously. Because the outer wall of the spiral shaft 201 adopts a symmetrical thread structure with right-handed rotation on the left and left-handed rotation on the right, it generates a guiding force that converges towards the center during operation. This guides the material entering the gap between the pressure roller and the ring die towards the center of the spiral shaft 201, preventing material accumulation in the grooves on the surface of the roller 1 and preventing the material from spreading to the edge of the roller 1, thus avoiding the generation of fine particles or powder. These particles or powder will fall into the collection trough 202 below due to the guiding action of the spiral shaft 201. The collection trough 202 is connected to the fixed plate 203 through the conveying hole 204 at the bottom. Fine particles can naturally slide down along the conveying hole 204 to the fixed plate 203. In the storage tank 207 below 03, fine particles are collected in a directional manner to prevent them from accumulating on the surface of the roller 1 and entering the edge gap. When it is necessary to clean the stored fine particles, the operator rotates the fixing device 206 to release the limiting sleeve 205 from the fixing constraint on the outer wall of the roller 1, and pulls the storage tank 207 out from under the fixing plate 203 to complete the cleaning. When the roller 1 needs to be moved, the stabilizing frame 7 with universal wheels 8 is fixed to both ends of the roller 1 by the connecting block 6. With the flexible movement characteristics of the universal wheels 8, the transfer of the roller 1 can be easily completed, reducing the difficulty of manual handling and indirectly reducing the structural damage of the roller 1 caused by improper handling, and further ensuring the stable performance of the material guiding and anti-accumulation functions. Furthermore, the fixed shaft 301 is securely installed at both ends of the roller body 1 by fixing screws 5 and connecting blocks 6. A partition plate 303 is installed on the outside of the fixed shaft 301, which can provide physical protection for the back-to-back angular contact ball bearings 304 and 305 inside. The angular contact ball bearings 304 and 305 work together to efficiently bear the axial load generated during the operation of the roller body 1, avoiding deformation of the components due to axial force. The cylindrical roller bearing 306 is specifically enhanced to bear the radial load, cope with the radial pressure on the roller body 1 during material extrusion, and prevent bearing damage or roller body 1 displacement caused by overload operation. Through the separate bearing of axial and radial loads and component protection, the reliability of equipment operation is significantly improved, and the risk of disintegration caused by excessive operation is avoided.

[0022] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wear-resistant surface structure for a ring die pellet mill pressure roller, comprising a roller body (1), characterized in that: The outer wall of the roller body (1) is provided with an anti-blocking mechanism (2), and the left and right ends of the roller body (1) are threadedly connected with flanges (4). The outer wall of the flanges (4) is provided with an anti-pressure mechanism (3). The anti-blocking mechanism (2) includes a storage tank (207). The inner wall of the storage tank (207) is rotatably connected to the outer wall of the roller (1). The left and right ends of the storage tank (207) are threaded with limit sleeves (205). A fixing plate (203) is threaded on the adjacent side of the two limit sleeves (205). The inner wall of the fixing plate (203) is provided with multiple conveying holes (204). The outer wall of the limit sleeve (205) is threaded with a spiral shaft (201). The outer wall of the spiral shaft (201) is provided with a collection groove (202). Multiple retainers (206) are fixedly connected on the opposite side of the two limit sleeves (205).

2. The wear-resistant ring die pellet mill pressure roller surface structure according to claim 1, characterized in that: The anti-compression mechanism (3) includes two fixed shafts (301). The adjacent sides of the two fixed shafts (301) are threaded to the opposite sides of the two flanges (4). The opposite sides of the two fixed shafts (301) are fixedly connected to connectors (302). The outer walls of the two connectors (302) are rotatably connected to partitions (303). The opposite sides of the two partitions (303) are rotatably connected to angular contact ball bearings (305). The adjacent sides of the two partitions (303) are rotatably connected to angular contact ball bearings (304). The outer walls of the two fixed shafts (301) are rotatably connected to cylindrical roller bearings (306).

3. The wear-resistant ring die pellet mill pressure roller surface structure according to claim 1, characterized in that: The inner walls of the two flanges (4) are threaded with multiple fixing screws (5), and the top left and right ends of the outer wall of the roller (1) are provided with connecting blocks (6), and the bottom of the two connecting blocks (6) are fixedly connected with stabilizing frames (7).

4. The wear-resistant ring die pellet mill pressure roller surface structure according to claim 3, characterized in that: Both of the two stabilizers (7) are equipped with casters (8) at the front and rear ends of the bottom, and soft pads (9) are fixedly connected to the left and right ends of the inner wall of the roller (1).

5. The wear-resistant ring die pellet mill pressure roller surface structure according to claim 4, characterized in that: Each of the two soft pads (9) is provided with a telescopic rod (10) on an adjacent side, and each of the two telescopic rods (10) is provided with a spring (11) on its outer wall.

6. The wear-resistant ring die pellet mill pressure roller surface structure according to claim 5, characterized in that: Rollers (12) are fixedly connected to adjacent sides of the two telescopic rods (10), and the same buffer block (13) is fixedly connected to adjacent sides of the two rollers (12).

7. The wear-resistant ring die pellet mill pressure roller surface structure according to claim 1, characterized in that: The outer wall of the roller (1) is also provided with protective rings (14) on both the left and right ends, and the inner wall of the limiting sleeve (205) is also rotatably connected to the outer wall of the roller (1) on both the left and right ends.

8. The wear-resistant ring die pellet mill pressure roller surface structure according to claim 2, characterized in that: The first angular contact ball bearing (304) and the second angular contact ball bearing (305) are installed back to back, and the fixed shaft (301) can be installed at both ends of the roller body (1) through the flange (4).

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