A quick-change mechanism for ball mill liners

Abstract

This application relates to the field of ball mill technology, specifically disclosing a quick-change mechanism for ball mill liners. The mechanism includes a ball mill cylinder, a liner body, and a wave crest block. A locking groove is formed on the inner wall of the ball mill cylinder along its own axis. Limiting grooves are formed on both side walls of the locking groove, and multiple positioning holes are spaced apart on the bottom wall of the locking groove. An insert block is provided on the outer side of the liner body, inserted into the locking groove. A positioning post is provided on the insert block, inserted into the positioning hole. A through hole is formed on the insert block, and two sliders are slidably connected within the through hole. A driving unit is provided on the liner body for synchronously driving the two sliders to move closer or further apart. The wave crest block is detachably connected to the inner side of the liner body. This application improves upon the problem in the prior art where the insert plate easily detaches from the anti-detachment groove under vibration, leading to the detachment of the liner body from the ball mill cylinder and poor stability.

Description

Technical Field

[0001] This application relates to the field of ball mill technology, and in particular to a quick-change mechanism for ball mill liners. Background Technology

[0002] Ball mill liners are protective devices installed on the inner wall of the ball mill cylinder. They are mainly used to buffer the impact and wear of grinding media and materials on the cylinder, and to improve grinding efficiency by optimizing the shape of the liner to adjust the movement trajectory of the grinding media. Currently, most liners are made of metal and are fixed to the cylinder wall by bolts, which makes disassembly and installation relatively complex.

[0003] A ball mill liner is proposed in the related technology, including a ball mill cylinder and a liner body. An installation groove is opened on the inner wall of the ball mill cylinder. A slide rail is provided on the outer side of the liner body and is locked in the installation groove. A slider is slidably connected in the slide rail. A spring is connected between the slider and the slide rail. A card is provided on the slider. An anti-detachment groove is opened in the installation groove. Under the action of the spring force, the slider can slide until the card on it is locked in the anti-detachment groove, thereby fixing the liner body to the ball mill cylinder.

[0004] Regarding the aforementioned technologies, the ball mill cylinder needs to rotate rapidly during use, resulting in significant vibration. Under vibration, the card is more likely to detach from the anti-detachment groove, leading to the separation of the liner body from the ball mill cylinder and poor stability. Utility Model Content

[0005] To address the issue that the card is prone to detaching from the anti-detachment groove under vibration, leading to the separation of the liner body from the ball mill cylinder and poor stability, this application provides a quick-change mechanism for ball mill liners.

[0006] The quick-change mechanism for ball mill liners provided in this application adopts the following technical solution:

[0007] A quick-change mechanism for a ball mill liner includes a ball mill cylinder, a liner body, and a wave crest block. The inner wall of the ball mill cylinder has a locking groove along its own axis, and limit grooves are formed on both side walls of the locking groove. Multiple positioning holes are spaced apart on the bottom wall of the locking groove. An insert block is provided on the outer side of the liner body, inserted into the locking groove. A positioning post is provided on the insert block, inserted into a positioning hole. A through hole is formed on the insert block, and two sliders are slidably connected within the through hole. A drive unit is provided on the liner body for synchronously driving the two sliders to move closer or further apart. The wave crest block is detachably connected to the inner side of the liner body.

[0008] By adopting the above technical solution, the insert block on the outer side of the liner body is inserted into the engaging groove on the inner wall of the ball mill cylinder. The positioning pin is inserted into the positioning hole for initial positioning. Then, the drive unit synchronously drives the two sliders in the through hole to move away from each other, so that the sliders are engaged in the limiting grooves on both sides of the engaging groove, completing the stable connection between the liner body and the ball mill cylinder. When the liner body needs to be replaced, the drive unit synchronously drives the two sliders to move closer to each other, so that they are disengaged from the limiting groove, and the insert block can be pulled out from the engaging groove, completing the disassembly of the liner body. This improves the problem in the prior art where the card is easily dislodged from the anti-disengagement groove under vibration, resulting in the liner body separating from the ball mill cylinder and poor stability. The wear of the liner body is mainly on the corrugated block. The corrugated block is detachably connected to the inner side of the liner body, which facilitates the replacement and maintenance of the corrugated block. It does not require the replacement of the entire ball mill liner, thus improving the replacement efficiency of the ball mill liner.

[0009] Optionally, the driving unit includes a rotating disk and a rotating assembly. The positioning post is rotatably connected to the insert block around its own axis. The rotating disk is coaxially connected to the positioning post. A first end face thread is provided on the end face of the rotating disk. A second end face thread is provided on both sliders. The second end face thread is threadedly connected to the first end face thread. The rotating assembly is provided on the liner body for driving the positioning post to rotate.

[0010] By adopting the above technical solution, the rotating component drives the positioning column to rotate around its own axis, and the positioning column drives the coaxially connected rotating disk to rotate. Since the first end face thread on the end face of the rotating disk is threadedly connected to the second end face thread on the slider, the rotation of the rotating disk will cause the two sliders to move closer or further away from each other synchronously in the through hole, thereby realizing the adjustment of the slider position and facilitating the installation and disassembly of the liner body and the ball mill cylinder.

[0011] Optionally, the rotating assembly includes a worm gear, a worm, and a locking component. The worm gear is coaxially connected to the positioning post, the worm is rotatably connected to the liner body, the worm meshes with the worm gear, and the locking component is provided on the liner body for locking the worm.

[0012] By adopting the above technical solution, the worm gear is rotated. Since the worm gear meshes with the worm wheel coaxially connected to the positioning column, the rotation of the worm gear will drive the worm wheel to rotate, thereby causing the positioning column to rotate around its own axis. After the adjustment is completed, the worm gear is locked by the locking component to prevent the worm gear from rotating accidentally, and further ensure the stability of the connection between the liner body and the ball mill cylinder.

[0013] Optionally, the locking component includes a connecting rod and a locking rod, the connecting rod being vertically connected to the worm gear, and the locking rod passing through the connecting rod and threadedly connected to the liner body.

[0014] By adopting the above technical solution, when it is necessary to lock the worm, the locking rod passes through the connecting rod and is threadedly connected to the liner body, thus fixing the position of the connecting rod. Since the connecting rod is vertically connected to the worm, the rotation of the worm is restricted. When it is necessary to unlock, the locking rod is unscrewed, so that the locking rod is disengaged from the threaded connection with the liner body. At this time, the connecting rod is no longer restricted, and the worm can rotate freely, thus achieving flexible control over the rotation state of the worm.

[0015] Optionally, the inner side of the liner body is provided with a groove, and one side of the crest block is provided with a protrusion. The protrusion is engaged in the groove, and the liner body is provided with an anti-detachment component to prevent the protrusion from falling out.

[0016] By adopting the above technical solution, the protrusion on one side of the wave crest block is inserted into the groove opened on the inner side of the liner body, and then the anti-detachment component is used to restrict the protrusion from coming out of the groove, so as to achieve a stable connection between the wave crest block and the liner body, ensuring that the wave crest block will not easily fall off during the operation of the ball mill, thereby improving the stability and reliability of the ball mill liner quick-change mechanism.

[0017] Optionally, the anti-detachment component includes an anti-detachment locking block, an anti-detachment groove is provided on the side wall of the protrusion, the anti-detachment locking block is vertically connected to the positioning post, and the anti-detachment locking block is locked in the anti-detachment groove.

[0018] By adopting the above technical solution, when the positioning column rotates, the anti-detachment block connected to it rotates accordingly and gets into the anti-detachment groove opened on the side wall of the protrusion, thereby restricting the protrusion from coming out of the groove opened on the inner side of the liner body, effectively preventing the crest block from separating from the liner body. The structure is simple and easy to use.

[0019] Optionally, a buffer pad is provided between the crest block and the liner body.

[0020] By adopting the above technical solution, a buffer pad is set between the wave crest block and the liner body, which can buffer the impact force between the wave crest block and the liner body, reduce component wear, and extend service life.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. By using the combination of the locking slot, insert block, positioning post, positioning hole, limiting slot, slider and drive unit, the installation of the liner body is convenient, avoiding the cumbersome operation of bolt connection, improving the efficiency of liner replacement, and making the installation of the liner body and the ball mill cylinder more stable and reliable. It improves the problem in the prior art that the card is easy to fall out of the anti-detachment slot under vibration, which leads to the liner body separating from the ball mill cylinder and poor stability.

[0023] 2. The matching arrangement of the rotating disk, the first end face thread, the second end face thread on the slider, and the rotating assembly enables the rotating assembly to drive the positioning pin to rotate around its own axis, thereby causing the rotating disk to rotate. This allows the two sliders to move closer or further apart synchronously within the through hole, achieving adjustment of the slider position. The slider movement is stable, reliable, and highly accurate.

[0024] 3. The anti-detachment component adopts an anti-detachment block that is vertically connected to the positioning column. The rotation of the positioning column drives the anti-detachment block into the anti-detachment groove opened on the side wall of the protrusion, thereby preventing the protrusion from detaching from the groove opened on the inner side of the liner body. No additional power source is required, the structure is relatively simple, and it is easy to use. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0027] Figure 2 This is a cross-sectional structural diagram of an embodiment of this application;

[0028] Figure 3 yes Figure 2 A magnified view of part A in the diagram.

[0029] Reference numerals in the attached drawings: 1. Ball mill cylinder; 11. Engaging groove; 12. Limiting groove; 13. Positioning hole; 2. Liner body; 21. Insert block; 22. Through hole; 23. Slider; 231. Second end face thread; 24. Groove; 3. Wave crest block; 31. Protrusion; 32. Anti-detachment groove; 4. Positioning pin; 41. Rotating disk; 42. First end face thread; 43. Worm gear; 44. Worm; 45. Connecting rod; 46. Locking rod; 5. Anti-detachment block. Detailed Implementation

[0030] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0031] This application discloses a quick-change mechanism for ball mill liners. (Refer to...) Figure 1-2The ball mill liner quick-change mechanism includes a ball mill cylinder 1, a liner body 2, and a wave crest block 3. Specifically, a locking groove 11 is formed on the inner wall of the ball mill cylinder 1 along its own axis. The locking groove 11 provides guidance and positioning for the installation of the liner body 2. Limiting grooves 12 are formed on both side walls of the locking groove 11, and multiple positioning holes 13 are spaced apart on the bottom wall of the locking groove 11.

[0032] The outer side of the liner body 2 is provided with an insert block 21. The shape of the insert block 21 is adapted to the engaging slot 11, and it is generally a rectangular block structure. The insert block 21 is inserted into the engaging slot 11, and the insert block 21 is provided with a positioning post 4, which is inserted into the positioning hole 13 to achieve the initial positioning of the liner body 2 and the ball mill cylinder 1. The insert block 21 has a through hole 22, and two sliders 23 are slidably connected to each other in the through hole 22. The sliders 23 can slide freely in the through hole 22. The liner body 2 is provided with a drive unit for synchronously driving the two sliders 23 to move closer or further apart. Two wave crest blocks 3 are detachably connected to the inner side of the liner body 2.

[0033] In use, the insert block 21 on the outside of the liner body 2 is inserted into the engaging groove 11 on the inner wall of the ball mill cylinder 1. The positioning pin 4 is inserted into the positioning hole 13 to achieve initial positioning. Then, the two sliders 23 in the through hole 22 are driven to move away from each other through the drive unit, so that the sliders 23 are engaged in the limiting grooves 12 on both sides of the engaging groove 11. This achieves stable fixation of the insert block 21 and the ball mill cylinder 1, thus completing the stable connection between the liner body 2 and the ball mill cylinder 1. When the liner body 2 needs to be replaced, the two sliders 23 are driven to move closer to each other through the drive unit, so that they are disengaged from the limiting groove 12. The insert block 21 can then be pulled out from the engaging groove 11, completing the disassembly of the liner body 2. This improves the problem in the prior art where the card is easily dislodged from the anti-dislodgement groove 32 under vibration, resulting in the liner body being separated from the ball mill cylinder 1 and having poor stability. Since the wear of the liner body 2 is mainly on the crest block 3, the crest block 3 can be detachably connected to the inside of the liner body 2, which makes it easy to replace and maintain the crest block 3. It does not require the entire ball mill liner to be replaced, thus improving the replacement efficiency of the ball mill liner.

[0034] For example, refer to Figure 2-3The drive unit includes a rotating disk 41 and a rotating assembly. The positioning pin 4 is rotatably connected to the insert block 21 around its own axis. The rotating disk 41 is coaxially fixedly connected to the positioning pin 4. A first end face thread 42 is provided on the end face of the rotating disk 41, and a second end face thread 231 is provided on both sliders 23. The second end face thread 231 is threadedly connected to the first end face thread 42. The rotating assembly is provided on the liner body 2 and is used to drive the positioning pin 4 to rotate. When the rotating disk 41 rotates, the threaded engagement of the first end face thread 42 and the second end face thread 231 allows the sliders 23 to tend to rotate with the rotating disk 41. Since the sliders 23 are slidably locked in the through hole 22 and cannot rotate, the two sliders 23 can be driven to move closer or further apart, thereby adjusting the position of the sliders 23 and facilitating the installation and disassembly of the liner body 2 and the ball mill cylinder 1.

[0035] For example, the rotating assembly includes a worm gear 43, a worm 44, and a locking component. The worm gear 43 is coaxially connected to the positioning post 4 and can be fixed to the positioning post 4 by means of a key connection or other means. The worm 44 is rotatably connected to the liner body 2 and meshes with the worm gear 43. An internal hexagonal nut head for rotating the worm 44 is welded to the end of the worm 44. Rotating the worm 44 can drive the worm gear 43 to rotate, thereby driving the positioning post 4 to rotate. The self-locking property of the worm gear 43 and worm 44 connection ensures the accuracy and stability of the rotation of the worm gear 43. The locking component is provided on the liner body 2 to lock the worm 44 and prevent the worm 44 from rotating on its own during the operation of the ball mill.

[0036] Specifically, refer to Figure 1 The locking component includes a connecting rod 45 and a locking rod 46. The connecting rod 45 is vertically connected to the worm gear 44, and the locking rod 46 passes through the connecting rod 45 and is threadedly connected to the liner body 2. When it is necessary to lock the worm gear 44, the locking rod 46 passes through the connecting rod 45 and is threadedly connected to the liner body 2, fixing the position of the connecting rod 45. Since the connecting rod 45 is vertically connected to the worm gear 44, the rotation of the worm gear 44 is restricted. When it is necessary to unlock, the locking rod 46 is unscrewed, disengaging the locking rod 46 from the threaded connection with the liner body 2. At this time, the connecting rod 45 is no longer restricted, and the worm gear 44 can rotate freely, achieving flexible control over the rotation state of the worm gear 44.

[0037] For example, refer to Figure 3The inner side of the liner body 2 has two grooves 24, located on both sides of the positioning post 4. A protrusion 31 is welded to one side of the wave crest block 3. The protrusion 31 is adapted to the inner wall of the groove 24. The protrusions 31 on the two wave crest blocks 3 are respectively engaged in one of the grooves 24. The liner body 2 is provided with an anti-detachment component to prevent the protrusions 31 from falling out. The protrusions 31 on one side of the wave crest block 3 are engaged in the grooves 24 on the inner side of the liner body 2, and then the anti-detachment component is used to prevent the protrusions 31 from falling out of the grooves 24, thus achieving a stable connection between the wave crest block 3 and the liner body 2. When the wave crest block 3 needs to be replaced, the restriction on the protrusions 31 can be released by the anti-detachment component. In addition, a buffer pad is provided between the wave crest block 3 and the liner body 2. The buffer pad can buffer the pressure of the wave crest block 3 on the liner body 2, reduce component wear, and extend service life.

[0038] Specifically, the anti-detachment component includes an anti-detachment block 5. An anti-detachment groove 32 is provided on the side wall of the protrusion 31. The anti-detachment block 5 is vertically connected to the positioning post 4 and is engaged within the anti-detachment groove 32, thus preventing the protrusion 31 from detaching. When the wave crest block 3 needs to be replaced, simply rotate the positioning post 4 to move the anti-detachment block 5 away from the anti-detachment groove 32 on the side wall of the protrusion 31, releasing the restriction on the protrusion 31, allowing the protrusion 31 to be pulled out. The structure is simple and easy to use.

[0039] The implementation principle of the quick-change mechanism for ball mill liners in this application embodiment is as follows: When in use, the insert block 21 on the outer side of the liner body 2 is inserted into the engaging groove 11 on the inner wall of the ball mill cylinder 1, and the positioning pin 4 is inserted into the positioning hole 13 to achieve initial positioning. Next, rotating the worm gear 44 drives the worm wheel 43 to rotate, which in turn drives the rotating disk 41 to rotate. This drives the two sliders 23 in the through hole 22 to move away from each other, so that the sliders 23 are engaged in the limiting grooves 12 on both sides of the engaging groove 11. This achieves stable fixing of the insert 21 to the ball mill cylinder 1, thus completing the stable connection between the liner body 2 and the ball mill cylinder 1. When it is necessary to replace the liner body 2, simply rotate the worm gear 44 in the opposite direction to drive the two sliders 23 to move closer to each other, so that they are disengaged from the limiting groove 12. This allows the insert 21 to be pulled out from the engaging groove 11, completing the disassembly of the liner body 2. This improves the problem in the prior art where the card is easily dislodged from the anti-dislodgement groove 32 under vibration, resulting in the liner body being separated from the ball mill cylinder 1 and having poor stability. Furthermore, when fixing the wave crest block 3, simply insert the protrusion 31 on the wave crest block 3 into the corresponding groove 24, then rotate the worm gear 44 appropriately to drive the worm wheel 43 to rotate, which in turn drives the positioning post 4 to rotate. This then drives the anti-detachment locking block 5 on the positioning post 4 to rotate into the anti-detachment groove 32 of the protrusion 31. The wave crest block 3 is detachably connected to the inner side of the liner body 2, facilitating the replacement and maintenance of the wave crest block 3. This eliminates the need to replace the entire ball mill liner, improving the replacement efficiency of the ball mill liner.

[0040] The above are all optional embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A quick change mechanism for a ball mill liner panel, characterized by: The device includes a ball mill cylinder, a liner body, and a wave crest block. The inner wall of the ball mill cylinder has a locking groove along its own axis, and limit grooves are formed on both side walls of the locking groove. Multiple positioning holes are spaced apart on the bottom wall of the locking groove. An insert block is provided on the outer side of the liner body, inserted into the locking groove. A positioning post is provided on the insert block, and the positioning post is inserted into a positioning hole. A through hole is formed on the insert block, and two sliders are slidably connected within the through hole. A drive unit is provided on the liner body for synchronously driving the two sliders to move closer or further apart. The wave crest block is detachably connected to the inner side of the liner body.

2. A quick change mechanism for a ball mill liner plate as claimed in claim 1, wherein: The driving unit includes a rotating disk and a rotating assembly. The positioning post is rotatably connected to the insert block around its own axis. The rotating disk is coaxially connected to the positioning post. A first end face thread is provided on the end face of the rotating disk. A second end face thread is provided on both sliders. The second end face thread is threadedly connected to the first end face thread. The rotating assembly is provided on the liner body and is used to drive the positioning post to rotate.

3. A quick change mechanism for a ball mill liner panel according to claim 2, characterised in that: The rotating assembly includes a worm gear, a worm, and a locking component. The worm gear is coaxially connected to the positioning post, the worm is rotatably connected to the liner body, and the worm meshes with the worm gear. The locking component is provided on the liner body for locking the worm.

4. A quick change mechanism for a ball mill liner plate as claimed in claim 3, wherein: The locking component includes a connecting rod and a locking rod. The connecting rod is vertically connected to the worm gear, and the locking rod passes through the connecting rod and is threadedly connected to the liner body.

5. A quick change mechanism for a ball mill liner plate as claimed in claim 2, wherein: The inner side of the liner body is provided with a groove, and one side of the crest block is provided with a protrusion. The protrusion is locked in the groove, and the liner body is provided with an anti-detachment component to prevent the protrusion from falling out.

6. The quick-change mechanism for ball mill liners according to claim 5, characterized in that: The anti-detachment component includes an anti-detachment locking block, an anti-detachment groove is provided on the side wall of the protrusion, the anti-detachment locking block is vertically connected to the positioning post, and the anti-detachment locking block is locked in the anti-detachment groove.

7. A quick change mechanism for a ball mill liner plate as claimed in claim 1, wherein: A buffer pad is provided between the crest block and the liner body.

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