A lattice liner for a ball mill
By introducing reinforcing ribs and interlocking block structures into the ball mill grate liner, combined with the anti-loosening design of pins and return springs, the wear and vibration problems caused by loose bolts in traditional grate liners are solved, achieving higher connection stability and extended equipment life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YIMEN JUZHU MINING CO LTD
- Filing Date
- 2025-07-23
- Publication Date
- 2026-06-26
AI Technical Summary
The grate liners of traditional ball mills are fixed with bolts, which causes wear and vibration, resulting in larger gaps, a large amount of steel balls being ejected, and a tendency for the sand pump to jam and the mill to wear out faster, thus shortening its service life.
The main body of the grid lining plate adopts a reinforced rib structure, which is connected by interlocking blocks and fastening bolts. Pins and return springs are used to prevent the bolts from loosening, and dust covers are used to protect the pins, thereby improving the connection firmness.
It enhances the strength and connection stability of the grid lining, reduces wear, extends service life, lowers production costs and maintenance frequency, and ensures the safe operation of the equipment.
Smart Images
Figure CN224405266U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of grid liner technology, and more specifically to a grid liner for a ball mill. Background Technology
[0002] Ball mills utilize steel balls as the crushing medium for grinding ore and are the most common and widely used grinding equipment in mineral processing and metallurgical industries. Ball mills are classified according to their discharge method into overflow ball mills, grate ball mills, and peripheral ball mills. Grate ball mills are mainly used in the primary grinding stage of mineral processing plants, characterized by forced discharge and achieving high processing capacity. Traditional grate ball mills feature a grate liner structure and a central disc liner design.
[0003] For example, a grid-type ball mill grid plate with the existing technology announcement number CN207187884U can avoid bolt hole and bolt wear, greatly reducing the replacement frequency. Only the grid plate needs to be replaced once every two or even three cylinder liner replacements. Not only is the service life of the grid plate more than doubled, but the risk of slurry entering the large gear ring is also reduced, which extends the service life of the entire ball mill liner and greatly reduces production costs.
[0004] However, the existing technology has the following problems when used: the grid liners of traditional ball mills are generally fixed with bolts. During operation, the grid liners not only wear down but also generate vibration. Due to wear and loosening of bolts, the gap between the liners will increase, resulting in a large amount of steel balls being ejected from the ball mill. It is also easy to cause accidents such as sand pump jamming and burning out of sand pump motor. At the same time, it will also lead to accelerated wear of the ball mill and shorten the service life of the ball mill. Based on this, the present invention provides a grid liner for ball mills with a firm connection. Utility Model Content
[0005] To overcome the aforementioned deficiencies of the prior art, this utility model provides a grid liner for a ball mill. The strength of the grid liner body is improved by reinforcing ribs, thereby enhancing the overall strength of the grid liner assembly. Adjacent grid liner bodies are fixed together by interlocking blocks and fastening bolts. The structure is simple, and installation and disassembly are very quick. Furthermore, pins are used to secure the fastening bolts, preventing loosening and ensuring a firm connection between the grid liner bodies, thus solving the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a grid liner for a ball mill, comprising a grid liner assembly used on a ball mill, the grid liner assembly comprising multiple grid liner bodies, each grid liner body having a reinforcing rib fixedly provided at its top, each grid liner body having a fitting groove on one outer wall, and each grid liner body having a fitting block fixedly provided on the other outer wall, two adjacent grid liner bodies being connected to each other via fitting blocks and fitting grooves, the grid liner bodies and fitting blocks being connected via a fixing assembly, each reinforcing rib having an anti-loosening component, the anti-loosening component comprising multiple hollow tubes fixedly passing through the reinforcing rib, each hollow tube having a pin inserted into the fixing assembly.
[0007] In a preferred embodiment, the fixing component includes a plurality of fastening bolts, and the grid liner body and the interlocking block are detachably connected by the plurality of fastening bolts, which facilitates quick assembly and disassembly of the two grid liner bodies by the installer.
[0008] In a preferred embodiment, each fastening bolt has a pin hole near the reinforcing rib that matches the pin rod. One end of the pin rod is inserted into the pin hole, and the other end of the pin rod extends through the outside of the hollow tube, making it convenient for installers to pull the pin rod to move.
[0009] In a preferred embodiment, a return spring is sleeved on the outer wall of the pin. One end of the return spring is fixed to the outer wall of the pin, and the other end of the return spring is fixed to the inner wall of the hollow tube. The return spring supports the pin and the pin hole, thereby preventing the pin from loosening.
[0010] In a preferred embodiment, each grid liner body has a detachable dust cover at its top. The dust cover is located on the side of the reinforcing rib away from the fastening bolts and is fitted over the outside of multiple pins to protect the pins and prevent them from being loosened by impact, thus affecting the connection firmness of the grid liner body.
[0011] In a preferred embodiment, each grid liner body has two square mounting holes at its top, both located on the side of the reinforcing rib away from the fastening bolt, for connecting the grid liner body to the ball mill.
[0012] The technical effects and advantages of this utility model are as follows:
[0013] 1. This utility model improves the strength of the grid liner body by reinforcing ribs, thereby improving the strength of the entire grid liner assembly. Adjacent grid liner bodies are fixed together by interlocking blocks and fastening bolts. The structure is simple and the installation and disassembly are very quick. Furthermore, the fastening bolts can be fixed by using pins to prevent the fastening bolts from loosening and affecting the connection between the grid liner bodies.
[0014] 2. A return spring connects the pin to the hollow tube. The return spring ensures that the pin is always inserted into the pin hole, thereby improving the firmness of the fastening bolts. This, in turn, improves the connection between the main bodies of two adjacent grid lining plates. Furthermore, a dust cover prevents the pin from being contaminated or impacted, so that the pin does not loosen when impacted, thus affecting the firmness of the fastening bolts. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a top view of the overall structure of this utility model;
[0017] Figure 3 This is a schematic diagram of the connection of the main body of the grid liner of this utility model;
[0018] Figure 4 This is a cross-sectional view of the grid liner body and the interlocking block of this utility model;
[0019] Figure 5 This is a cross-sectional view of the hollow tube of this utility model.
[0020] The attached figures are labeled as follows: 1. Grid backing plate assembly; 11. Grid backing plate body; 12. Reinforcing rib; 13. Fitting groove; 14. Fitting block;
[0021] 2. Fixing components; 21. Fastening bolts;
[0022] 3. Anti-loosening component; 31. Hollow tube; 32. Pin; 33. Pin hole; 34. Return spring; 4. Dust cover; 5. Square mounting hole. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Refer to the instruction manual appendix Figure 1-5 This utility model provides a grid liner for a ball mill, including a grid liner assembly 1 used on a ball mill. The grid liner assembly 1 includes multiple grid liner bodies 11. Each grid liner body 11 has a reinforcing rib 12 fixedly provided at its top end. Each grid liner body 11 has two square mounting holes 5 at its top end. The two square mounting holes 5 are both located on the side of the reinforcing rib 12 away from the fastening bolt 21.
[0025] Next, a fitting groove 13 is provided on one outer wall of each grid liner body 11, and a fitting block 14 is fixedly provided on the other outer wall of each grid liner body 11. Two adjacent grid liner bodies 11 are connected to the fitting groove 13 through the fitting block 14. The grid liner body 11 and the fitting block 14 are connected by a fixing component 2. Specifically, the fixing component 2 includes multiple fastening bolts 21, and the grid liner body 11 and the fitting block 14 are detachably connected by multiple fastening bolts 21.
[0026] Each reinforcing rib 12 is provided with an anti-loosening component 3. The anti-loosening component 3 includes multiple hollow tubes 31 fixedly passing through the reinforcing rib 12. Each hollow tube 31 has a pin 32 inserted into it and connected to the fixing component 2. Each fastening bolt 21 has a pin hole 33 that matches the pin 32 at one end near the reinforcing rib 12. One end of the pin 32 is inserted into the pin hole 33, and the other end of the pin 32 passes through the outside of the hollow tube 31.
[0027] Furthermore, a return spring 34 is sleeved on the outer wall of the pin 32. One end of the return spring 34 is fixed to the outer wall of the pin 32, and the other end of the return spring 34 is fixed to the inner wall of the hollow tube 31. When the installer pulls the pin 32 out of the pin hole 33, the return spring 34 between the pin 32 and the hollow tube 31 is compressed and contracts. After the pin 32 is released, the return spring 34 recovers and drives the pin 32 to move out of the hollow tube 31 again, so that the pin 32 is inserted into the pin hole 33, and the fastening bolt 21 can be fixed.
[0028] In actual use, the installer first fits the two grid liner bodies 11 together, and then tightens the fastening bolts 21. Multiple grid liner bodies 11 form a grid liner assembly 1 for the ball mill, and the strength of the grid liner bodies 11 is improved by using reinforcing ribs 12, thereby improving the strength of the entire grid liner assembly 1. After each fastening bolt 21 is tightened, the installer inserts the pin 32 into the pin hole 33. The pin 32 can prevent the fastening bolts 21 from loosening and affecting the connection firmness of the grid liner bodies 11. When it is necessary to disassemble the grid liner bodies 11, the installer pulls the pin 32 out of the pin hole 33 and then loosens the fastening bolts 21. The structure is simple and the installation and disassembly are very quick.
[0029] Furthermore, in actual manufacturing, the grid liner body 11 is extended by 30mm to ensure that the gaps between the grid liner bodies 11 are within the specified range. This reduces the wear of the grid liner body 11, extends its service life, reduces maintenance workload, and, more importantly, completely eliminates the need for forced shutdowns for maintenance due to the grid liner body 11 being knocked off, thus ensuring safe and normal production operation.
[0030] Refer to the instruction manual appendix Figure 1-5Each grid liner body 11 has a dust cover 4 detachably connected to its top. The dust cover 4 is located on the side of the reinforcing rib 12 away from the fastening bolt 21, and the dust cover 4 is fitted over the outside of multiple pins 32 to protect the pins 32.
[0031] By setting a dust cover 4 on the reinforcing rib 12, the dust cover 4 can cover the outside of multiple pins 32, which can prevent the pins 32 from being contaminated and collided, so as to prevent the pins 32 from loosening when collided and affecting the fixing firmness of the fastening bolts 21.
[0032] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A grid liner for a ball mill, characterized in that: Including a grid liner assembly (1) used on a ball mill, the grid liner assembly (1) includes a plurality of grid liner bodies (11), and each grid liner body (11) has a reinforcing rib (12) fixedly provided at its top. Each grid liner body (11) has a fitting groove (13) on one side of its outer wall, and a fitting block (14) is fixedly provided on the other side of its outer wall. Two adjacent grid liner bodies (11) are connected to each other through the fitting block (14) and the fitting groove (13). The grid liner body (11) and the fitting block (14) are connected through a fixing component (2). Each reinforcing rib (12) is provided with an anti-loosening component (3), which includes multiple hollow tubes (31) fixedly inserted inside the reinforcing rib (12), and each hollow tube (31) has a pin (32) inserted into the fixing component (2).
2. The grid liner for a ball mill according to claim 1, characterized in that: The fixing component (2) includes a plurality of fastening bolts (21), and the grid liner body (11) and the fitting block (14) are detachably connected by the plurality of fastening bolts (21).
3. A grid liner for a ball mill according to claim 2, characterized in that: Each fastening bolt (21) has a pin hole (33) near the reinforcing rib (12) that matches the pin rod (32). One end of the pin rod (32) is inserted into the pin hole (33), and the other end of the pin rod (32) passes through the outside of the hollow tube (31).
4. A grid liner for a ball mill according to claim 1, characterized in that: A return spring (34) is sleeved on the outer wall of the pin (32). One end of the return spring (34) is fixed to the outer wall of the pin (32), and the other end of the return spring (34) is fixed to the inner wall of the hollow tube (31).
5. A grid liner for a ball mill according to claim 2, characterized in that: Each grid liner body (11) has a detachable dust cover (4) at its top. The dust cover (4) is located on the side of the reinforcing rib (12) away from the fastening bolt (21), and the dust cover (4) is fitted over the outside of multiple pins (32) to protect the pins (32).
6. A grid liner for a ball mill according to claim 2, characterized in that: Each grid liner body (11) has two square mounting holes (5) at its top. The two square mounting holes (5) are located on the side of the reinforcing rib (12) away from the fastening bolt (21).