Mine crusher

Abstract

The invention relates to a mine crusher which comprises a rack, a main shaft is rotationally connected into the rack, an eccentric mechanism for driving the main shaft to do eccentric motion is arranged in the rack, a movable cone is arranged at the end of the main shaft, a sealing frame is arranged in the rack, the outer surface of the main shaft is sleeved with the sealing frame, and a sealing block is arranged on the sealing frame. Sealing parts are arranged on the two opposite sides of the sealing block, the sealing parts are obliquely arranged from bottom to top in the direction away from the main shaft, abutting parts in one-to-one correspondence with the sealing parts are arranged on the movable cone, and the abutting parts are attached to the surfaces of the sealing parts in a sliding mode. The crusher has the effect of prolonging the service life of the crusher.

Description

Technical Field

[0001] The present application relates to the technical field of crushing equipment, and in particular to a mining crusher. Background Art

[0002] During the mining process, stones, ores and other materials need to be crushed, that is, the materials are broken into smaller sizes to facilitate subsequent screening and sieving. The cone crusher is a mining machine used to crush stones. Its working principle is to drive the eccentric rotation of the moving cone main shaft group through the eccentric mechanism. The moving cone on the main shaft and the fixed cone plate on the frame cooperate with each other to crush the stone.

[0003] During the operation of the cone crusher, the motor drives the eccentric sleeve to rotate through the eccentric mechanism. The moving cone rotates and swings under the force of the eccentric sleeve. The section of the moving cone close to the fixed cone plate becomes the crushing chamber. The material is crushed by multiple squeezing and impacts of the moving cone and the static cone.

[0004] However, a large amount of dust and fine particles will be generated after the stone is squeezed and crushed. Since the moving cone will swing inside the crusher, during the process of the moving cone crushing the ore, the dust and fine particles can easily enter the main shaft along the gap between the moving cone and the main shaft. At this time, the dust and fine particles can easily mix into the lubricating oil and enter between the main shaft and the eccentric mechanism parts with the flow of the lubricating oil, thereby aggravating the wear of the main shaft and reducing the service life of the crusher. There are obvious shortcomings. Summary of the Invention

[0005] In order to increase the service life of the crusher, the present application provides a mining crusher.

[0006] The mining crusher provided in this application adopts the following technical solution: A mining crusher comprises a frame, a main shaft is rotatably connected inside the frame, an eccentric mechanism is provided in the frame for driving the main shaft to perform eccentric motion, a dynamic cone is provided at the end of the main shaft, a sealing frame is provided in the frame, the sealing frame is sleeved on the outer surface of the main shaft, a sealing block is provided on the sealing frame, and sealing parts are provided on opposite sides of the sealing block, the sealing parts are inclined from bottom to top in a direction away from the main shaft, and abutment parts corresponding to the sealing parts are provided on the dynamic cone, and the abutment parts slide and fit on the surface of the sealing part.

[0007] By adopting the above technical solution, when the mining crusher is working, the sealing block effectively fills the gap between the main shaft and the moving cone, and during the swing of the moving cone, the abutment part and the sealing part are always tightly fitted, further reducing the possibility of dust and fine particles entering the interior of the main shaft through the gap, thus forming an effective sealing structure, thereby reducing the degree of wear of the main shaft and the eccentric mechanism and increasing the service life of the crusher.

[0008] Optionally, the sealing block is detachably arranged on the sealing frame through a connecting assembly, and the connecting assembly includes a plurality of connecting columns arranged at the bottom of the sealing block, and the sealing frame is provided with connecting grooves corresponding to the plurality of connecting columns one by one, and each of the connecting columns is plugged into the corresponding connecting groove, and a movable groove is provided on the inner side wall of the connecting groove, and the movable groove is parallel to the radial direction of the main shaft, and a plug rod is slidably connected in the movable groove, and a plug groove is provided on the connecting column to be plugged into the plug rod, and the sealing frame is provided with a disassembly and assembly assembly for driving the plurality of plug columns to be synchronously inserted into or out of the plug groove.

[0009] By adopting the above technical solution, when installing the sealing block, multiple connecting columns are aligned with the connecting grooves and inserted to fix the sealing block in the horizontal direction. Then, the multiple plug-in columns are driven to be inserted into the plug-in grooves synchronously by the disassembly and assembly components to fix the sealing block in the vertical direction. In this way, a stable connection between the sealing block and the sealing frame is achieved, effectively reducing the possibility of the sealing block loosening and shifting during the operation of the crusher, thereby ensuring a close fit between the abutment portion and the sealing portion. When disassembling the sealing block, the disassembly and assembly components drive multiple plug-in columns to disengage from the plug-in slots simultaneously, and then the workers take the sealing block out of the sealing rack. This makes it easy for workers to quickly replace worn or damaged sealing blocks, improving the convenience of workers' operations.

[0010] Optionally, the disassembly and assembly component includes an external gear ring threadedly connected to the end of the plug-in column, a rotation groove for the rotation of the external gear ring is provided on the sealing frame, a limiting ring is provided on the external gear ring, a limiting groove that rotates with the limiting ring is provided on the inner side wall of the rotation groove, a guide bar is provided on the outer surface of the plug-in rod, guide grooves that slide with the guide bar are provided on the movable groove and the inner side wall of the plug-in groove, a driving groove connected to multiple rotation grooves is provided on the sealing frame, and a gear ring that meshes with multiple external gear rings is rotatably connected in the driving groove.

[0011] By adopting the above technical solution, the worker rotates the gear ring, and under the restriction of the limiting ring and the limiting groove, the gear ring drives multiple outer gear rings to rotate in the rotating groove. Due to the restriction of the guide bar and the guide groove, the plug-in rod can only move along the length direction of the movable groove. When the outer gear ring rotates, it will drive the threaded plug-in rod to disengage or insert into the plug-in groove, thereby realizing the rapid disassembly and assembly of the sealing block. The setting of the disassembly and assembly assembly allows the worker to realize the synchronous movement of multiple plug-in rods only by rotating the gear ring. The staff can easily control the disassembly and assembly of the sealing block by rotating the gear ring, which greatly simplifies the operation process and reduces the difficulty of replacing the sealing block.

[0012] Optionally, an arc groove is provided on the inner side wall of the driving groove, and a moving block that slides with the arc groove is provided on the gear ring. When the moving block moves to the two ends of the arc groove, the plug-in rod is fully inserted into or disengaged from the plug-in groove. A threaded hole is provided in the sealing frame, and a tightening bolt is threadedly connected to the threaded hole. The tightening bolt presses the moving block against the end of the arc groove.

[0013] By adopting the above technical solution, the moving range of the gear ring is effectively limited by the length of the arc groove, so that the worker only needs to slide the moving block to the two ends of the slide groove to achieve complete insertion or disengagement of the connecting rod, which further simplifies the worker's operation. When the connecting rod is fully inserted into the connecting groove, the worker screws the tightening bolt into the threaded hole, and limits the rotation of the gear ring by limiting the moving block through the tightening bolt, thereby reducing the possibility of accidental rotation of the gear ring due to vibration and other factors during the operation of the crusher, thereby reducing the probability of the sealing block connection caused by loosening of the connecting rod, and improving the connection stability of the sealing block on the sealing frame, thereby ensuring the sealing performance of the sealing block and improving the reliability and service life of the mining crusher.

[0014] Optionally, the top end of the main shaft is threadedly connected with a nut, a sealing ring block is provided on the nut, and a sealing cylinder that is quickly plugged into the sealing ring is provided on the outer surface of the moving cone.

[0015] By adopting the above technical solution, during the process of connecting the nut and the main shaft, the sealing ring is quickly inserted into the sealing cylinder. The plug-in connection between the sealing ring and the sealing cylinder effectively extends the path for dust and fine particles to enter the main shaft, thereby reducing the possibility of dust and fine particles entering the main shaft through the gap between the moving cone and the nut, thereby further reducing the degree of main shaft wear and improving the service life of the crusher.

[0016] Optionally, an elastic airbag is provided at the bottom end of the sealing tube, the elastic airbag is filled with gas, an annular airbag is embedded in the inner wall of the sealing tube, the annular airbag is connected to the elastic airbag through an air tube, and when the annular airbag is inflated, the annular airbag abuts against the outer surface of the sealing ring block.

[0017] By adopting the above technical solution, as the nut is continuously screwed into the main shaft, the sealing ring block continuously squeezes the elastic airbag, prompting the gas in the elastic airbag to enter the annular airbag through the trachea, so that the annular airbag inflates and tightly abuts the outer surface of the sealing ring block, forming a dynamic adaptive sealing structure, further enhancing the sealing effect, and effectively filling the tiny gap that may exist between the sealing ring block and the sealing cylinder, preventing dust and fine particles from entering the inside of the main shaft from this part.

[0018] Optionally, a support ring is provided at the top of the frame, an adjustment sleeve is provided inside the support ring, the outer wall of the adjustment sleeve is threadedly engaged with the support ring, and a conical crushing sleeve is provided on the inner wall of the adjustment sleeve, and the crushing sleeve and the outer surface of the moving cone are enclosed to form a crushing chamber.

[0019] By adopting the above technical solution, before crushing, workers rotate the adjustment sleeve to change its position in the support ring, and then adjust the distance between the crushing sleeve and the outer surface of the moving cone, so that the size of the crushing chamber can be adjusted according to actual crushing needs, effectively improving the adaptability of the mining crusher to different crushing conditions.

[0020] Optionally, a plurality of reinforcing ribs are provided between the crushing sleeve and the adjusting sleeve, and the plurality of reinforcing ribs are evenly distributed circumferentially.

[0021] By adopting the above technical solution, the arrangement of the reinforcing ribs effectively improves the structural strength between the adjusting sleeve and the crushing sleeve, ensuring the smooth progress of the crushing process.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. In the embodiment of the present application, by providing a sealing frame, a sealing block, a sealing portion, and an abutting portion, when the mining crusher is in operation, the sealing block effectively fills the gap between the main shaft and the moving cone. Moreover, during the swinging of the moving cone, the abutting portion and the sealing portion always fit tightly together, further reducing the possibility of dust and fine particles entering the interior of the main shaft through the gap. This forms an effective sealing structure, thereby reducing the degree of wear on the main shaft and the eccentric mechanism and extending the service life of the crusher. 2. This application sets up a disassembly and assembly component and a connection component. The setting of the disassembly and assembly component allows workers to achieve synchronous movement of multiple plug-in rods by simply rotating the ring gear. The staff can easily control the disassembly and assembly of the sealing block by rotating the ring gear, which greatly simplifies the operation process and reduces the difficulty of replacing the sealing block. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of this application.

[0024] Figure 2 It is a cross-sectional view of the main shaft in the embodiment of the present application.

[0025] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0026] Figure 4 It is a cross-sectional view of the sealing frame in the embodiment of the present application.

[0027] Figure 5 yes Figure 2 Enlarged view of point B in the middle.

[0028] Explanation of the accompanying symbols: 01, frame; 02, main shaft; 021, moving cone; 1, support ring; 2, adjusting sleeve; 21, crushing sleeve; 22, crushing chamber; 23, reinforcing rib; 3, sealing frame; 31, connecting groove; 4, sealing block; 41, sealing part; 5, abutment part; 6, connecting assembly; 61, connecting column; 611, plug-in groove; 62, plug-in rod; 621, guide strip; 7, disassembly and assembly assembly; 71, outer gear ring; 72, limiting ring; 73, gear ring; 731, moving block; 8, moving groove; 81, guide groove; 9, rotating groove; 91, limiting groove; 10, driving groove; 1001, arc groove; 11, threaded hole; 12, tightening bolt; 13, nut; 14, sealing ring block; 15, sealing cylinder; 151, elastic airbag; 152, annular airbag. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-5 This application is described in further detail.

[0030] The embodiment of the present application discloses a mining crusher.

[0031] Reference Figure 1 A mining crusher includes a frame 01, a main shaft 02 is rotatably connected inside the frame 01, and an eccentric mechanism (not shown in the figure) is installed in the frame 01 to drive the main shaft 02 to perform eccentric motion. Driving the main shaft 02 to perform eccentric motion by the eccentric mechanism is a prior art and will not be repeated here. A dynamic cone 021 is installed on the outer surface of the top end of the main shaft 02.

[0032] Reference Figure 1 and Figure 2 A support ring 1 is installed at the top of the frame 01, and an adjusting sleeve 2 is arranged inside the support ring 1. The outer surface of the adjusting sleeve 2 is threadedly matched with the support ring 1. The inner wall of the adjusting sleeve 2 is fixedly connected with a conical crushing sleeve 21. The crushing sleeve 21 and the outer surface of the moving cone 021 enclose a crushing chamber 22. A plurality of reinforcing ribs 23 are installed between the crushing sleeve 21 and the adjusting sleeve 2, and the plurality of reinforcing ribs 23 are evenly distributed circumferentially.

[0033] Before crushing, the worker rotates the adjustment sleeve 2 to change its position in the support ring 1, and then adjusts the distance between the crushing sleeve 21 and the outer surface of the dynamic cone 021, so that the size of the crushing chamber 22 can be adjusted according to the actual crushing needs.

[0034] Reference Figure 1 and Figure 2 The frame 01 is detachably connected to a sealing frame 3 by bolts. The sealing frame 3 is bowl-shaped and sleeved on the outer surface of the main shaft 02. A sealing block 4 is installed on the sealing frame 3. The sealing block 4 is integrally formed with sealing parts 41 on both sides opposite to each other in the circumferential direction. The sealing part 41 is inclined from top to bottom in the direction away from the main shaft 02. The end of the moving cone 021 near the sealing block 4 is integrally formed with a butt joint 5 corresponding to the sealing part 41. The butt joint 5 is annular, and the inclination direction of the butt joint 5 is the same as that of the sealing part 41. In the process of the eccentric mechanism driving the main shaft 02 to perform eccentric movement, the butt joint 5 always slides and fits with the surface of the sealing part 41, thereby effectively filling the gap between the main shaft 02 and the moving cone 021, reducing the possibility of dust and fine particles entering the inside of the main shaft 02 through the gap, thereby forming an effective sealing structure, thereby reducing the wear of the main shaft 02 and the eccentric mechanism, and improving the service life of the crusher.

[0035] Reference Figure 2 and Figure 3 The sealing block 4 is detachably connected to the sealing frame 3 through a connecting assembly 6. The connecting assembly 6 includes a plurality of connecting columns 61 fixedly connected to the bottom of the sealing block 4. The outer end surface of the sealing frame 3 is provided with connecting grooves 31 corresponding to the plurality of connecting columns 61. Each connecting column 61 is plugged into the corresponding connecting groove 31. By inserting the connecting column 61 into the connecting groove 31, the sealing block 4 is initially fixed in the horizontal direction.

[0036] Reference Figure 2 and Figure 3 , each connecting groove 31 is provided with a movable groove 8 on the inner wall, and the movable groove 8 is parallel to the radial direction of the main shaft 02. A plug-in rod 62 is slidably connected inside the movable groove 8, and a plug-in groove 611 is provided on the connecting column 61 for plugging with the plug-in rod 62. A disassembly and assembly component 7 is provided on the sealing frame 3. When the connecting column 61 is inserted into the plug-in groove 611, the worker drives multiple plug-in columns to be synchronously inserted into the plug-in groove 611 through the disassembly and assembly component 7, thereby achieving vertical fixation on the sealing frame 3, thereby achieving a firm connection between the sealing block 4 and the sealing frame 3, effectively reducing the possibility of loosening and displacement of the sealing block 4 during the operation of the crusher, thereby ensuring a close fit between the abutment portion 5 and the sealing portion 41.

[0037] Reference Figure 2 and Figure 3The disassembly and assembly component 7 includes an outer gear ring 71 threadedly connected to the outer surface of the plug-in column. A rotation groove 9 is provided on the sealing frame 3 for the outer gear ring 71 to rotate. A limiting ring 72 is fixedly connected to the outer gear ring 71. A limiting groove 91 is provided on the inner side wall of the rotation groove 9 to cooperate with the limiting ring 72 for rotation. Under the restriction of the limiting ring 72 and the limiting groove 91, the outer gear ring 71 can only rotate around its own axis.

[0038] Reference Figure 2 and Figure 3 The outer surface of the plug-in rod 62 is fixedly connected to a guide bar 621, and the inner side walls of the movable groove 8 and the plug-in groove 611 are provided with a guide groove 81 that slides with the guide bar 621. Under the restriction of the guide bar 621 and the guide groove 81, the plug-in rod 62 can only move along the length direction of the movable groove 8.

[0039] Reference Figure 2 and Figure 3 The outer surface of the sealing frame 3 is provided with a driving groove 10 connected to multiple rotating grooves 9. The rotating roller in the driving groove 10 is connected to a gear ring 73 engaged with multiple outer gear rings 71. The outer peripheral side of the gear ring 73 is provided with multiple concave ridges to facilitate workers to move the gear ring 73. An arc groove 1001 is provided on the inner side wall of the driving groove 10. The bottom surface of the gear ring 73 is fixedly connected to a moving block 731 that slides with the arc groove 1001. When the moving block 731 moves to the two ends of the arc groove 1001, the plug-in rod 62 is fully inserted into or disengaged from the plug-in groove 611.

[0040] Reference Figure 3 and Figure 4 A threaded hole 11 is provided in the sealing frame 3, and the threaded hole 11 is connected to the arc groove 1001. A tightening bolt 12 is threadedly connected to the inside of the threaded hole 11. When the tightening bolt 12 presses the moving block 731 against the end of the arc groove 1001, the plug-in rod 62 is fully inserted into the plug-in groove 611.

[0041] When locking cam 751 with locking cam 711 from moving direction, the locking cam 711 is in the locked state, and the locking cam 712 is in the locked state. When removing the sealing block 4, the worker first screws the end of the tightening bolt 12 into the threaded hole 11, and then drives the ring gear 73 to rotate in the opposite direction. The ring gear 73 drives multiple plug-in rods 62 to synchronously move away from the plug-in groove 611. When the plug-in rod 62 is completely out of the plug-in groove 611, the fixing effect of the plug-in rod 62 on the connecting column 61 disappears, and the worker pulls the connecting column 61 out of the connecting groove 31 to separate the sealing block 4 from the sealing frame 3. The entire disassembly process only requires rotating the ring gear 73 to achieve the synchronous movement of multiple plug-in rods 62. The staff can easily control the disassembly and assembly of the sealing block 4 by rotating the ring gear 73, which greatly simplifies the operation process and reduces the difficulty of replacing the sealing block 4.

[0042] Reference Figure 2 and Figure 5 The end of the main shaft 02 is threadedly connected with a nut 13, and a sealing ring block 14 is fixedly installed on the outer surface of the nut 13. The outer surface of the moving cone 021 is fixedly connected with a sealing tube 15 that is plugged into the sealing ring block 14. The bottom of the sealing tube 15 is fixedly connected with an elastic airbag 151. The elastic airbag 151 is filled with gas. The inner side wall of the sealing tube 15 is fixedly embedded with an annular airbag 152. The annular airbag 152 is connected to the elastic airbag 151 through multiple air tubes. When the sealing ring block 14 squeezes the elastic airbag 151 to the maximum extent, the annular airbag 152 abuts against the outer surface of the sealing ring block 14.

[0043] As the nut 13 is continuously screwed into the main shaft 02, the sealing ring block 14 continuously squeezes the elastic airbag 151, prompting the gas in the elastic airbag 151 to enter the annular airbag 152 through the trachea, so that the annular airbag 152 is inflated and tightly abuts against the outer surface of the sealing ring block 14, thereby effectively extending the path for dust and fine particles to enter the interior of the main shaft 02, thereby reducing the possibility of dust and fine particles entering the interior of the main shaft 02 through the gap between the moving cone 021 and the nut 13, thereby further reducing the degree of wear of the main shaft 02 and improving the service life of the crusher.

[0044] The implementation principle of a mining crusher in an embodiment of the present application is as follows: when the mining crusher is working, the sealing block 4 effectively fills the gap between the main shaft 02 and the moving cone 021, and during the swinging of the moving cone 021, the abutment portion 5 and the sealing portion 41 are always tightly fitted, further reducing the possibility of dust and fine particles entering the interior of the main shaft 02 through the gap, thereby forming an effective sealing structure, thereby reducing the degree of wear of the main shaft 02 and the eccentric mechanism, and increasing the service life of the crusher.

[0045] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A mining crusher, comprising a frame (01), wherein a main shaft (02) is rotatably connected to the frame (01), an eccentric mechanism for driving the main shaft (02) to perform eccentric motion is provided in the frame (01), and a moving cone (021) is provided at the end of the main shaft (02), characterized in that: A sealing frame (3) is provided in the frame (01), and the sealing frame (3) is sleeved on the outer surface of the main shaft (02). A sealing block (4) is provided on the sealing frame (3), and sealing portions (41) are provided on opposite sides of the sealing block (4). The sealing portions (41) are inclined from bottom to top in a direction away from the main shaft (02). Abutment portions (5) corresponding to the sealing portions (41) are provided on the movable cone (021), and the abutment portions (5) are slidably fitted on the surface of the sealing portion (41).

2. A mining crusher according to claim 1, characterized in that: The sealing block (4) is detachably arranged on the sealing frame (3) through a connecting assembly (6), the connecting assembly (6) includes a plurality of connecting columns (61) arranged at the bottom of the sealing block (4), the sealing frame (3) is provided with connecting grooves (31) corresponding to the plurality of connecting columns (61), each of the connecting columns (61) is plugged into the corresponding connecting groove (31), the inner side wall of the connecting groove (31) is provided with a movable groove (8), the movable groove (8) is parallel to the radial direction of the main shaft (02), a plug rod (62) is slidably connected in the movable groove (8), the connecting column (61) is provided with a plug groove (611) plugged into the plug rod (62), and the sealing frame (3) is provided with a disassembly assembly (7) for driving the plurality of plug columns to be synchronously inserted into or out of the plug groove (611).

3. A mining crusher according to claim 2, characterized in that: The disassembly and assembly component (7) includes an outer toothed ring (71) threadedly connected to the end of the plug-in column, a rotation groove (9) for the outer toothed ring (71) to rotate is provided on the sealing frame (3), a limiting ring (72) is provided on the outer toothed ring (71), a limiting groove (91) is provided on the inner side wall of the rotation groove (9) for rotationally cooperating with the limiting ring (72), a guide bar (621) is provided on the outer surface of the plug-in rod (62), a guide groove (81) is provided on the inner side wall of the movable groove (8) and the plug-in groove (611) for slidingly cooperating with the guide bar (621), a driving groove (10) connected to multiple rotation grooves (9) is provided on the sealing frame (3), and a gear ring (73) meshing with multiple outer toothed rings (71) is rotatably connected in the driving groove (10).

4. A mining crusher according to claim 3, characterized in that: An arc groove (1001) is provided on the inner wall of the driving groove (10), and a moving block (731) that slides with the arc groove (1001) is provided on the gear ring (73). When the moving block (731) moves to the two ends of the arc groove (1001), the plug-in rod (62) is completely inserted into or disengaged from the plug-in groove (611). A threaded hole (11) is provided in the sealing frame (3), and a tightening bolt (12) is connected to the threaded inner surface of the threaded hole (11). The tightening bolt (12) presses the moving block (731) against the end of the arc groove (1001).

5. A mining crusher according to claim 1, characterized in that: The top end of the main shaft (02) is threadedly connected with a nut (13), a sealing ring block (14) is provided on the nut (13), and a sealing cylinder (15) is provided on the outer surface of the movable cone (021) for quick plug-in cooperation with the sealing ring.

6. A mining crusher according to claim 5, characterized in that: An elastic airbag (151) is provided at the bottom end of the sealing tube (15), and the interior of the elastic airbag (151) is filled with gas. An annular airbag (152) is embedded in the inner wall of the sealing tube (15), and the annular airbag (152) is connected to the elastic airbag (151) through an air tube. When the annular airbag (152) is inflated, the annular airbag (152) abuts against the outer surface of the sealing ring block (14).

7. A mining crusher according to claim 1, characterized in that: A support ring (1) is provided at the top of the frame (01), an adjustment sleeve (2) is provided inside the support ring (1), the outer wall of the adjustment sleeve (2) is threadedly engaged with the support ring (1), and a conical crushing sleeve (21) is provided on the inner wall of the adjustment sleeve (2), and the crushing sleeve (21) and the outer surface of the moving cone (021) are enclosed to form a crushing chamber (22).

8. A mining crusher according to claim 7, characterized in that: A plurality of reinforcing ribs (23) are provided between the crushing sleeve (21) and the adjusting sleeve (2), and the plurality of reinforcing ribs (23) are evenly distributed in the circumferential direction.

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