A quick-change bar structure and operation method for multi-axis grinding mill without removing grinding balls

Abstract

This invention discloses a quick-change bar structure for a multi-axis grinding mill that eliminates the need for ball removal. It relates to the field of sand mills and aims to solve the problem of difficulty in replacing the bottom stirring bar in traditional sand mills. The key technical points include a barrel body, a first connecting hole located on the base opposite the heat dissipation shell, the first connecting hole penetrating both the heat dissipation shell and the base, a first guide cylinder fixedly installed within the first connecting hole, a first baffle plate located near the replacement bar within the first guide cylinder, a first replacement hole located on the baffle plate, the first replacement hole being directly opposite the replacement bar, and the height of the first replacement hole being the same as the rotation trajectory plane of the replacement bar, a first replacement cylinder located on the side of the first baffle plate away from the replacement bar, one end of the first replacement cylinder passing through the first replacement hole, the other end of the first replacement cylinder extending out of the heat dissipation shell, and a sealing device installed at the end of the first replacement cylinder extending out of the heat dissipation shell. This invention achieves the effect of facilitating the replacement of the bottom stirring bar by operators.

Description

Technical Field

[0001] This invention relates to the technical field of sand mills, and in particular to a quick-change bar structure for a multi-axis grinding mill that allows for the replacement of grinding balls without disassembling them. Background Technology

[0002] Currently, sand mills involve adding materials into a limited barrel space and grinding the materials using stirring rods and steel balls to further reduce the volume of the material inside the barrel until the material reaches the target particle size.

[0003] The existing multi-axis grinding machine includes a barrel containing numerous steel balls for grinding powder. One end of the barrel rests on a base. A heat dissipation shell is fitted onto the barrel and the base. Several stirring rods are installed inside the barrel, each with a stirring bar evenly distributed along its height. Each stirring bar includes a connecting rod threaded inside, and an impact rod made of ceramic material with a hardness greater than that of the steel balls is fitted over the connecting rod. A driven drive shaft that rotates the stirring rods is mounted on the base. A positioning sleeve is installed inside the base and encloses the driven drive shaft. A driven gear is fixedly fitted onto the end of the driven drive shaft away from the stirring rods. A drive device that drives the driven gear is located on the side of the base away from the barrel. The drive device includes a motor fixed to the base, a drive shaft rotatably mounted on the motor, and a drive gear fixedly fitted onto the drive shaft. The drive gear meshes with several driven gears. When the operator needs to rotate the stirring rods, they simply start the motor, which drives the drive gear through the drive shaft, and the drive gear drives the driven gears.

[0004] The existing technical solutions mentioned above have the following drawbacks: when the stirring rod inside the existing barrel is damaged, the entire barrel must be opened and the stirring rod inside the barrel must be removed before the damaged stirring rod can be repaired. Moreover, among the several stirring rods inside the existing sand mill barrel, the bottom stirring rod is subjected to the most pressure from the steel balls and is also the most prone to damage. This problem urgently needs to be solved. Summary of the Invention

[0005] The purpose of this invention is to provide a quick-change bar structure for a multi-axis grinding mill that allows for easy replacement of the bottom stirring bar inside the tank by the operator.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A quick-change bar structure for a multi-axis grinding mill includes a barrel body with a base on the bottom wall. A heat dissipation shell is fitted onto the base and the outer wall of the barrel body. A stirring rod is rotatably mounted inside the base. Several stirring bars are evenly distributed along the height of the outer wall of the stirring rod. The stirring bar closest to the base is a replacement bar. A first connecting hole is opened in the heat dissipation shell opposite the base, penetrating both the heat dissipation shell and the base. A first guide cylinder is fixedly mounted inside the first connecting hole. A first ball-blocking plate is mounted inside the first guide cylinder near the replacement bar. A first replacement hole is opened on the first ball-blocking plate, facing the replacement bar. The height of the first replacement hole is the same as the rotation trajectory plane of the replacement bar. A first replacement cylinder is mounted on the side of the first ball-blocking plate away from the replacement bar. One end of the first replacement cylinder passes through the first replacement hole, and the end of the first replacement cylinder away from the first replacement hole extends out of the heat dissipation shell. A sealing device is provided at the end of the first replacement cylinder extending out of the heat dissipation shell.

[0008] By adopting the above technical solution, a first connecting hole is opened in the heat dissipation shell directly opposite the replacement rod. A first baffle plate is installed in the first connecting hole, and a first replacement hole is opened on the first baffle plate. A first replacement cylinder is inserted into the first replacement hole. When the replacement rod is damaged, the operator only needs to rotate the replacement rod to the position directly opposite the first replacement hole. The first baffle plate can block the steel ball in the base, and then the replacement rod can be taken out through the first replacement cylinder. It is not necessary to open the entire barrel, thus making it convenient for the operator to replace the replacement rod inside the barrel.

[0009] Furthermore, the first ball-blocking plate is slidably disposed inside the first guide cylinder, the first replacement cylinder is fixedly disposed on the first ball-blocking plate, a first holding plate is fixedly sleeved on one end of the first replacement cylinder extending out of the heat dissipation shell, the first holding plate covers the first guide cylinder, a first connecting plate is disposed on one end of the outer wall of the first guide cylinder extending out of the heat dissipation shell to abut against the first holding plate, and a fixing device for fixing the position of the first holding plate is disposed on the first connecting plate.

[0010] By adopting the above technical solution, when the operator needs to replace the steel balls in the base, he only needs to hold the first holding plate and take out the first ball-blocking plate through the first holding plate and the first replacement cylinder. Then the steel balls will flow out of the base along the first guide cylinder. After injecting new steel balls into the base, the first ball-blocking plate can be inserted into the first guide cylinder, and the first holding plate can be pressed against the end face of the first guide cylinder.

[0011] Furthermore, the fixing device includes a connecting hole on the first connecting plate, and a gripping hole is provided on the first gripping plate at the position corresponding to the connecting hole. A connecting bolt is telescopically disposed in the gripping hole, and the connecting bolt and the connecting hole are threadedly engaged.

[0012] By adopting the above technical solution, when the operator needs to fix the first holding plate on the first guide cylinder, he only needs to place the first holding plate against the first connecting plate, then align the connecting hole with the holding hole, and then thread the connecting bolt through the connecting bolt.

[0013] Furthermore, a placement groove is provided on the side of the first gripping plate near the first connecting plate, and a sealing gasket is provided in the placement groove.

[0014] By adopting the above technical solution, a sealing gasket is placed in the groove, and the sealing gasket is placed between the first holding plate and the first connecting plate, thereby improving the sealing performance of the connection between the first holding plate and the first guide cylinder.

[0015] Furthermore, a first grip handle is provided on the side of the first grip plate away from the first connecting plate.

[0016] By adopting the above technical solution, the first grip handle can provide a point of leverage for the first grip plate, thereby facilitating the operator to move the first grip plate.

[0017] Furthermore, the sealing device includes a first sealing hole formed on the first grip plate, the first sealing hole being positioned opposite the first replacement cylinder, a first connector being inserted through the first sealing hole, and a first sealing cap being threaded onto the first connector.

[0018] By adopting the above technical solution, when the first replacement cylinder is not in use, the first sealing cover can be placed on the first connector, and the first connector can be plugged into the first sealing hole, thereby blocking the first replacement cylinder.

[0019] Furthermore, a first contact plate is fixedly sleeved on the outer wall of the first connector to abut against the end face of the first sealing cover, and a sealing groove is opened at one end of the outer wall of the first connector near the contact plate, and a sealing ring is provided in the sealing groove.

[0020] By adopting the above technical solution, the first contact plate can further increase the contact area between the first connector and the first holding plate, thereby improving the sealing performance between the first sealing cover and the first holding plate.

[0021] Furthermore, a partition plate is provided on the inner side wall of the barrel, which divides the barrel into an upper ball-filling cavity and a lower ball-filling cavity. A second connecting hole is provided on the outer side of the heat dissipation shell, directly opposite the lower ball-filling cavity. The second connecting hole is located at one end of the barrel near the partition plate. A second guide cylinder passes through the second connecting hole. A second ball-bearing plate is provided at one end of the second guide cylinder near the stirring rod. A second replacement hole is provided on the second ball-bearing plate, directly opposite the stirring rod. The second replacement hole is at the same height as the rotation trajectory of the stirring rod. A second replacement cylinder passes through the second replacement hole. A second holding plate is fixedly provided at one end of the second replacement cylinder extending out of the heat dissipation shell, covering the second guide cylinder.

[0022] By adopting the above technical solution, when the operator needs to remove the stirring rods below the partition plate (excluding the replacement rod), the operator only needs to rotate the stirring rod to the position facing the second replacement hole, then take out the stirring rod through the second replacement cylinder, and then gradually pull up the stirring rod from the top wall of the tank to remove the stirring rods one by one until the target damaged stirring rod is removed. It is not necessary to open the entire tank, thus making it convenient for the operator to replace the stirring rods under the partition plate inside the tank.

[0023] To achieve the above objectives, the present invention provides the following technical solution:

[0024] A method for operating a quick-change bar structure for a multi-axis grinding mill that requires no ball removal, the operation steps are as follows:

[0025] A1. Make a hollow cylindrical auxiliary tool, and then set a sliding plug inside the auxiliary tool;

[0026] A2. Rotate the stirring rod to align the replacement rod with the first replacement hole;

[0027] A3. Open the first sealing cover and insert the auxiliary tool into the first replacement cylinder. After the auxiliary tool is inserted into the cylinder, push the sliding plug to push a small amount of steel balls inside the auxiliary tool into the cylinder.

[0028] A4. Pull out the sliding plug inside the auxiliary tool, and at the same time put the auxiliary tool on the replacement rod. Then remove the replacement rod from the stirring rod inside the auxiliary tool.

[0029] A5. Finally, insert the new replacement tool into the auxiliary tool, and then operate the new replacement rod in the auxiliary tool. After the new replacement rod is screwed onto the stirring rod, pull out the auxiliary tool from the first replacement hole, and then screw on the first sealing cap.

[0030] By adopting the above technical solution, the operator can directly insert the auxiliary tool into the replacement rod. By placing the hollow cylindrical auxiliary tool on the replacement rod, the steel ball in the base and the replacement rod are separated. Then, the replacement rod can be removed in the first replacement cylinder. This allows the replacement rod to be replaced without the steel ball in the base flowing out, and the entire cylinder does not need to be disassembled.

[0031] Furthermore, the operating steps are as follows:

[0032] B1. Rotate the stirring rod to align the stirring rod of the highest layer under the partition plate with the second replacement hole;

[0033] B2. Remove the second ball-blocking plate from the second guide tube;

[0034] B3. The operator inserts their hand through the second guide tube into the tank to remove the stirring rod;

[0035] B4. Then, lift the stirring rod upwards from the top of the bucket to remove the stirring rod on the next layer of the partition plate until the stirring rod to be replaced is removed. After replacing the new stirring rod, gradually lower the stirring rod downwards and install the removed stirring rods one by one.

[0036] B5. Push the second ball-blocking plate back into the second guide tube.

[0037] By adopting the above technical solution, the partition plate stores the steel balls in the upper ball cavity and the lower ball cavity respectively. The stirring rod in the upper ball cavity can be easily removed by simply opening the top wall of the barrel. However, the stirring rod in the lower ball cavity requires disassembling the partition plate first, which is extremely inconvenient. Operators can remove the stirring rod in the lower ball cavity without disassembling the partition plate by using the second connecting hole and the second guide cylinder.

[0038] In summary, the beneficial technical effects of the present invention are as follows:

[0039] 1. The system incorporates a first connecting hole, a first guide cylinder, and a first replacement cylinder, thereby facilitating the replacement of the replacement rod inside the base.

[0040] 2. A first ball-blocking plate is used to prevent steel balls from flowing out of the replacement cylinder;

[0041] 3. A first gripping plate and a first gripping handle are used to achieve the effect of removing the ball-blocking plate from the guide tube. Attached Figure Description

[0042] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0043] Figure 2 This is a schematic diagram of the internal structure of the barrel in this invention;

[0044] Figure 3This is a schematic diagram of the structure of the base in this invention;

[0045] Figure 4 This is a schematic cross-sectional view of the guide cylinder in this invention;

[0046] Figure 5 for Figure 4 Enlarged structural diagram of section A in the middle;

[0047] Figure 6 for Figure 5 Enlarged structural diagram of section B in the middle;

[0048] Figure 7 for Figure 4 Enlarged structural diagram of section C.

[0049] In the diagram, 1. Barrel body; 11. Base; 12. Drive unit; 13. Motor; 14. Drive shaft; 15. Drive gear; 16. Driven shaft; 17. Positioning sleeve; 18. Driven gear; 19. Heat dissipation shell; 2. Stirring rod; 21. Stirring bar; 22. Replacement bar; 3. First connecting hole; 31. First guide cylinder; 32. First baffle plate; 33. First replacement hole; 34. First replacement cylinder; 4. Sealing device; 41. First sealing hole; 42. First connector; 43. First contact point 44. Sealing groove; 45. Sealing ring; 46. First sealing cover; 5. First holding plate; 51. First holding handle; 52. First connecting plate; 53. Placement groove; 54. Sealing gasket; 6. Fixing device; 61. Connecting hole; 62. Holding hole; 63. Connecting bolt; 7. Divider plate; 71. Upper ball loading cavity; 72. Lower ball loading cavity; 73. Second connecting hole; 74. Second guide cylinder; 75. Second ball baffle plate; 76. Second replacement hole; 77. Second replacement cylinder; 78. Second holding plate. Detailed Implementation Example

[0050] The present invention will be further described in detail below with reference to the accompanying drawings.

[0051] Reference Figure 1 and Figure 2 This invention discloses a multi-axis grinding mill with a quick-change ball-and-bar structure that eliminates the need for disassembly. It includes a base 11, on which sits a cylindrical, hollow barrel 1. The barrel 1 is constructed of two layers. Three stirring rods 2 are mounted on the base 11, forming an equilateral triangle. A drive device 12 is located on the side of the base 11 away from the stirring rods 2. The drive device 12 includes a motor 13 fixed to the base 11. The operator can indirectly control the rotation of the stirring rods 2 through the motor 13. When the operator needs to grind powder inside the barrel 1, they simply start the motor 13, which drives the stirring rods 2 to rotate, causing the stirring rods 2 to impact the powder particles inside the barrel 1.

[0052] Reference Figure 2 and Figure 3 A drive shaft 14 is rotatably mounted on the motor 13, and a drive gear 15 is fixedly mounted on the drive shaft 14. A driven drive shaft 16 is installed inside the base 11 corresponding to the position of the stirring rod 2. The end of the stirring rod 2 near the base 11 is fixed to the driven drive shaft 16. A driven gear 18 is mounted on the outer wall of the end of the driven drive shaft 16 away from the stirring rod 2, and the three driven gears 18 mesh with the drive gear 15 respectively. In order to fix the position of the driven drive shaft 16, a positioning sleeve 17 is fixedly mounted on the side of the base 11 away from the stirring rod 2. The positioning sleeve 17 is mounted on the driven drive shaft 16. When the operator needs to drive the stirring rod 2 to rotate, he only needs to start the motor 13. The motor 13 drives the drive gear 15 to rotate, the drive gear 15 drives the driven gear 18 to rotate, and the driven gear 18 drives the stirring rod 2 to rotate.

[0053] Reference Figure 4 and Figure 5 The heat dissipation shell 19 has three first connecting holes 3 at the position of the base 11. The connecting holes correspond to three stirring rods 2, and several stirring rods 21 are set on the stirring rods 2. In order to ensure that the material in the barrel 1 is ground thoroughly, a large number of steel balls are set in the barrel 1. Under the action of gravity, the steel balls tend to accumulate at the base 11. Therefore, the replacement rod 22 at the base 11 is subjected to the greatest pressure and is most prone to damage. The stirring rod 21 closest to the base 11 is the replacement rod 22. The height of the first connecting hole 3 is the same as that of the replacement rod 22. The first connecting hole 3 is set directly opposite the replacement rod 22. The first connecting hole 3 passes through the heat dissipation shell 19 and the base 11. A first guide cylinder 31 is fixedly inserted into the first connecting hole 3. A first ball-blocking plate 32 is provided at one end of the first guide cylinder 31 near the base 11. A first replacement hole 33 is provided on the first ball-blocking plate 32. A first replacement cylinder 34 is inserted into the first replacement hole 33. The end of the first replacement cylinder 34 away from the first ball-blocking plate 32 extends out of the heat dissipation shell 19. When the operator needs to remove the damaged replacement rod 22, he / she only needs to insert a cylindrical auxiliary tool into the first guide cylinder 31. Before that, the replacement rod 22 should be rotated to face the first guide cylinder 31. Then the auxiliary tool is put on the replacement rod 22. In this way, a large number of steel balls in the base 11 can be isolated, and the replacement rod 22 can be taken out from the first replacement cylinder 34 more easily.

[0054] Reference Figure 5 and Figure 6The first ball-blocking plate 32 is slidably disposed inside the first guide cylinder 31, with its periphery fitting against the inner wall of the first guide cylinder 31. A first holding plate 5 is fixedly sleeved on the end of the first replacement cylinder 34 away from the first ball-blocking plate 32, covering the end face of the first guide cylinder 31. To facilitate the movement of the first holding plate 5, a first holding handle 51 is provided on the side of the first holding plate 5 away from the first guide cylinder 31. A first connecting plate 52, fitting against the first holding plate 5, is provided on the end of the first guide cylinder 31 away from the first ball-blocking plate 32. The first connecting plate 52 is provided with a fixing device 6 for fixing the position of the first holding plate 5. The fixing device 6 includes a connecting hole 61 on the first connecting plate 52 and a holding hole 62 on the first holding plate 5 at the position corresponding to the connecting hole 61. A connecting bolt 63 is threaded into the holding hole 62 and the connecting hole 61. When the first holding plate 5 needs to be fixed on the first connecting plate 52, the holding hole 62 should be aligned with the connecting hole 61, and then the connecting bolt 63 should be inserted into the holding hole 62 and the connecting hole 61. In order to improve the sealing between the first holding plate 5 and the first connecting plate 52, a placement groove 53 is opened on the side of the first holding plate 5 close to the first connecting plate 52, and a rubber sealing gasket 54 is placed in the placement groove 53.

[0055] Reference Figure 5 and Figure 6 A sealing device 4 is provided at the end of the first replacement cylinder 34 away from the base 11. The sealing device 4 includes a first sealing hole 41 opened on the first holding plate 5. The first sealing hole 41 is sleeved on the first replacement cylinder 34. A first connector 42 is plugged at the end of the first sealing hole 41 away from the first replacement cylinder 34. A first sealing cover 46 is threaded on the first connector 42. In order to improve the sealing performance of the first sealing cover 46 and the first connector 42, a first abutment plate 43 is provided on the outer side wall of the first connector 42. An annular sealing groove 44 is opened at the end of the outer side wall of the first connector 42 near the first abutment plate 43. A rubber sealing ring 45 is provided in the sealing groove 44. When the first sealing cover 46 is closed on the first connector 42, the end face of the first sealing cover 46 abuts against the first abutment plate 43. In order to facilitate the rotation of the first sealing cover 46, an anti-slip protrusion is provided on the outer side wall of the first sealing cover 46.

[0056] Reference Figure 4 and Figure 7A partition plate 7 is provided on the inner side wall of the barrel 1, which divides the barrel 1 into an upper ball-filling cavity 71 and a lower ball-filling cavity 72 along the height direction. The heat dissipation shell 19 has a second connecting hole 73 corresponding to the stirring rod 21 of the highest layer in the lower ball-filling cavity 72. The second connecting hole 73 is provided with three holes, each corresponding to one of the three stirring rods 2. The second connecting hole 73 penetrates the side wall of the barrel 1. A second guide cylinder 74 is inserted into the second connecting hole 73. A second ball-blocking plate 75 is provided at the end of the second guide cylinder 74 near the stirring rod 2. The second ball-blocking rod is slidably disposed in the second guide cylinder 74. A second replacement hole 76 is provided on the second ball-blocking plate 75. A second replacement cylinder 77 is fixedly inserted into the second replacement hole 76. The end of the second replacement cylinder 77 away from the second ball-blocking plate 75 extends out of the heat dissipation shell 19. A second holding plate 78 is fixedly covered on the second guide cylinder 74 at the end of the second replacement cylinder 77 away from the second ball-blocking plate 75. Example

[0057] A method for operating a quick-change bar structure for a multi-axis grinding mill that requires no ball removal, the operation steps are as follows:

[0058] A1. Make a hollow cylindrical auxiliary tool, and then set a sliding plug inside the auxiliary tool;

[0059] A2. Rotate the stirring rod 2 to align the replacement rod 22 with the first replacement hole 33;

[0060] A3. Open the first sealing cover 46 and insert the auxiliary tool into the first replacement cylinder 34. After the auxiliary tool is inserted into the barrel 1, push the sliding plug to push a small amount of steel balls in the auxiliary tool into the barrel 1.

[0061] A4. Pull out the sliding plug inside the auxiliary tool, and at the same time put the auxiliary tool on the replacement rod 22. Then remove the replacement rod 22 from the stirring rod 2 inside the auxiliary tool.

[0062] A5. Finally, insert the new replacement tool into the auxiliary tool, and then operate the new replacement rod 22 in the auxiliary tool. After the new replacement rod 22 is screwed onto the stirring rod 2, pull out the auxiliary tool from the first replacement hole 33, and then screw on the first sealing cap 46.

[0063] The disassembly steps for stirring rod 2 are as follows:

[0064] B1. Rotate the stirring rod 2 so that the stirring rod 21 of the highest layer under the partition plate 7 is aligned with the second replacement hole 76.

[0065] B2. Remove the second ball-blocking plate 75 from the second guide tube 74;

[0066] B3. The operator reaches into the barrel 1 through the second guide tube 74 to remove the stirring rod 21;

[0067] B4. Then, lift the stirring rod 2 from the top of the bucket 1 and remove the stirring rod 21 of the next layer of the partition plate 7 until the target stirring rod 21 is removed. After replacing the new stirring rod 21, gradually lower the stirring rod 2 and install the removed stirring rods 21 one by one.

[0068] B5. Insert the second ball-blocking plate 75 back into the second guide tube 74.

[0069] The auxiliary tool in this solution is a cylindrical metal rod with a hollow center. When the metal rod is inserted into the first replacement cylinder 34, the outer wall of the metal rod fits against the inner wall of the first replacement cylinder 34. The second replacement cylinder 77 and the first replacement cylinder 34 have the same aperture. The sliding plug in the hollow position of the metal rod is made of a circular rubber plate, and one side of the sliding plug is provided with a metal steel strip for the operator to hold.

[0070] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A quick-change bar structure for a multi-axis grinding mill without disassembling balls, comprising a barrel (1), a base (11) provided on the bottom wall of the barrel (1), a heat dissipation shell (19) sleeved on the outer side wall of the base (11) and the barrel (1), a stirring rod (2) rotatably disposed inside the base (11), a plurality of stirring bars (21) evenly distributed along the height direction on the outer side wall of the stirring rod (2), the stirring bar (21) closest to the base (11) being a replacement bar (22), characterized in that: The heat dissipation shell (19) has a first connecting hole (3) at the position opposite to the base (11). The first connecting hole (3) passes through the heat dissipation shell (19) and the base (11). A first guide cylinder (31) is fixedly installed in the first connecting hole (3). A first baffle plate (32) is installed at the end of the first guide cylinder (31) near the replacement rod (22). A first replacement hole (33) is opened on the first baffle plate (32). The first replacement hole (33) is set opposite to the replacement rod (22). The height of the first replacement hole (33) is the same as the plane of the rotation trajectory of the replacement rod (22). A first replacement cylinder (34) is installed on the side of the first baffle plate (32) away from the replacement rod (22). One end of the first replacement cylinder (34) passes through the first replacement hole (33). The end of the first replacement cylinder (34) away from the first replacement hole (33) extends out of the heat dissipation shell (19). A sealing device (4) is installed at the end of the first replacement cylinder (34) extending out of the heat dissipation shell (19). The sealing device (4) includes a first sealing hole (41) opened on the first holding plate (5), the first sealing hole (41) is set opposite to the first replacement cylinder (34), a first connector (42) is provided inside the first sealing hole (41), and a first sealing cap (46) is threaded on the first connector (42). The outer wall of the first connector (42) is fixedly fitted with a first contact plate (43) that abuts against the end face of the first sealing cover (46). A sealing groove (44) is opened at one end of the outer wall of the first connector (42) near the contact plate. A sealing ring (45) is provided in the sealing groove (44). The inner wall of the barrel (1) is provided with a partition plate (7), which divides the barrel (1) into an upper ball-filling cavity (71) and a lower ball-filling cavity (72). A second connecting hole (73) is provided on the outer side of the heat dissipation shell (19) directly opposite the lower ball-filling cavity (72). The second connecting hole (73) is located at one end of the barrel (1) near the partition plate (7). A second guide cylinder (74) is inserted into the second connecting hole (73). The second guide cylinder (74) is close to the stirring rod (21). A second baffle plate (75) is provided at one end of the stirring rod (21). A second replacement hole (76) is provided on the second baffle plate (75). The second replacement hole (76) is positioned directly opposite the stirring rod (21). The second replacement hole (76) and the stirring rod (21) are at the same height along their rotation trajectory. A second replacement cylinder (77) is inserted through the second replacement hole (76). A second holding plate (78) is fixedly provided at one end of the second replacement cylinder (77) that extends out of the heat sink shell and covers the second guide cylinder (74).

2. The multi-axis grinding mill quick-change bar structure without ball removal according to claim 1, characterized in that: The first ball baffle (32) is slidably disposed inside the first guide cylinder (31), and the first replacement cylinder (34) is fixedly disposed on the first ball baffle (32). The first replacement cylinder (34) is fixedly sleeved with a first holding plate (5) at one end extending out of the heat dissipation shell (19). The first holding plate (5) covers the first guide cylinder (31). The outer wall of the first guide cylinder (31) is provided with a first connecting plate (52) that abuts against the first holding plate (5) at one end extending out of the heat dissipation shell (19). The first connecting plate (52) is provided with a fixing device (6) for fixing the position of the first holding plate (5).

3. The multi-axis grinding mill quick-change bar structure without ball removal according to claim 2, characterized in that: The fixing device (6) includes a connecting hole (61) on the first connecting plate (52), and a gripping hole (62) is provided on the first gripping plate (5) at the position corresponding to the connecting hole (61). A connecting bolt (63) is telescopically provided in the gripping hole (62), and the connecting bolt (63) and the connecting hole (61) are threaded together.

4. The multi-axis grinding mill quick-change bar structure without ball removal according to claim 3, characterized in that: The first gripping plate (5) has a placement groove (53) on the side near the first connecting plate (52), and a sealing gasket (54) is provided in the placement groove (53).

5. The multi-axis grinding mill quick-change bar structure without ball removal according to claim 4, characterized in that: The first grip plate (5) is provided with a first grip handle (51) on the side away from the first connecting plate (52).

6. The operation method of the multi-axis grinding mill's quick-change-bar structure without ball removal according to any one of claims 1-5, characterized in that, The operation steps are as follows: A1. Make a hollow cylindrical auxiliary tool, and then set a sliding plug inside the auxiliary tool; A2. Rotate the stirring rod (2) to align the replacement rod (22) with the first replacement hole (33); A3. Open the first sealing cover (46) and insert the auxiliary tool into the first replacement cylinder (34). When the auxiliary tool is inserted into the barrel (1), push the sliding plug to push a small amount of steel ball in the auxiliary tool into the barrel (1). A4. Pull out the sliding plug inside the auxiliary tool, and at the same time put the auxiliary tool on the replacement rod (22). Then remove the replacement rod (22) from the stirring rod (2) inside the auxiliary tool. A5. Finally, insert the new replacement tool into the auxiliary tool, and then operate the new replacement rod (22) in the auxiliary tool. After the new replacement rod (22) is screwed onto the stirring rod (2), pull out the auxiliary tool from the first replacement hole (33) and screw on the first sealing cap (46).

7. The operation method of the multi-axis grinding mill's quick-change bar structure without ball removal according to claim 6, characterized in that, The disassembly steps for the stirring rod (2) are as follows: B1. Rotate the stirring rod (2) so that the stirring rod (21) of the highest layer under the partition plate (7) is aligned with the second replacement hole (76); B2. Pull out the second ball-blocking plate (75) inside the second guide tube (74); B3. The operator inserts his hand into the barrel (1) through the second guide tube (74) to disassemble the stirring rod (21); B4. Then, lift the stirring rod (2) from the top of the barrel (1) and remove the stirring rod (21) of the next layer of the partition plate (7) until the target stirring rod (21) is removed. After replacing the new stirring rod (21), gradually lower the stirring rod (2) and install the removed stirring rod (21) one by one. B5. Insert the second ball-blocking plate (75) back into the second guide tube (74).

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