A composite liner for a bauxite ball mill

Abstract

This utility model discloses a composite liner for a bauxite ball mill, relating to the field of ball mill technology. It includes an outer connecting ring, with a mounting plate connected to the inner wall of the outer connecting ring. A buffer mechanism is provided between the outer connecting ring and the mounting plate. A modular system is provided on the side of the mounting plate away from the outer connecting ring. The modular system includes multiple ceramic liner plates that adhere to the surface of the mounting plate away from the outer connecting ring. All ceramic liner plates have an arc-shaped structure, and staggered protrusions are provided at both ends of each ceramic liner plate. A fastening mechanism is provided inside the outer connecting ring, the mounting plate, and the ceramic liner plates, and an expansion component is provided at the connection between the fastening mechanism and the ceramic liner plates. This utility model, through a series of structures, forms a multi-layered composite structure, which enhances the overall wear resistance, buffering, and noise reduction performance, facilitates individual replacement of worn areas, and prevents the overall installation from loosening.

Description

Technical Field

[0001] This utility model relates to the field of ball mill technology, specifically a composite liner for a bauxite ball mill. Background Technology

[0002] Ball mills are a type of grinding equipment widely used in industries such as mining, building materials, and chemicals. They are mainly used to crush materials to the required fineness. Ball mills are also needed after bauxite mining.

[0003] Because the ore continuously impacts the inner wall of the ball mill during the crushing process, causing damage to the inside of the ball mill, a liner is installed inside the ball mill for protection. However, when the surface of the current protective liner wears down due to long-term use, the entire liner needs to be replaced, which is costly. In addition, the liner can become loose due to the impact of the ore. Therefore, a composite liner for bauxite ball mills is proposed. Utility Model Content

[0004] The purpose of this invention is to provide a composite liner for a bauxite ball mill to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a composite liner for a bauxite ball mill, comprising an outer connecting ring, an mounting plate connected to the inner wall of the outer connecting ring, and a buffer mechanism provided between the outer connecting ring and the mounting plate. A modular system is provided on the side of the mounting plate away from the outer connecting ring. The modular system includes multiple ceramic liner plates that are attached to the surface of the mounting plate away from the outer connecting ring. All of the multiple ceramic liner plates have an arc-shaped structure, and both ends of the ceramic liner plates are provided with staggered protrusions. A fastening mechanism is provided inside the outer connecting ring, the mounting plate, and the ceramic liner plates, and an expansion component is provided at the connection between the fastening mechanism and the ceramic liner plates.

[0006] Preferably, the outer connecting ring includes an alloy steel layer, a sound-absorbing cotton layer, and a polyurethane layer, wherein the alloy steel layer and the polyurethane layer are located on the side away from and the side close to the mounting plate, respectively, and the sound-absorbing cotton layer is located between the alloy steel layer and the polyurethane layer.

[0007] Preferably, multiple mounting plates are provided at equal angles on the inner wall of the outer connecting ring, and each mounting plate has a quarter-circle structure, with the center of the circular structure formed by the multiple mounting plates coinciding with the center of the outer connecting ring.

[0008] Preferably, the buffer mechanism includes notches and rubber pads. Multiple notches are formed at equal angles on the inner wall of the outer connecting ring. Each of the multiple notches is connected to a rubber pad. The surface of the multiple rubber pads away from the notches is connected to the multiple mounting plates one by one.

[0009] Preferably, the fastening mechanism includes a first threaded through groove, a first threaded fixing rod, a second threaded through groove, and a second threaded fixing rod. The first threaded through groove is opened inside the outer connecting ring and the plurality of mounting plates. The first threaded fixing rod is connected to the interior of the plurality of first threaded through grooves. The second threaded through groove is opened inside the plurality of ceramic inner lining plates. The second threaded fixing rod is connected to the interior of the plurality of second threaded through grooves. The end of the second threaded fixing rod near the outer connecting ring is threaded to the interior of the first threaded fixing rod.

[0010] Preferably, the inner wall threads of the first and second threaded through grooves are in opposite directions, and the surface threads of the first and second threaded fixing rods are in the same direction.

[0011] Preferably, the expansion assembly includes an expansion groove and an aluminum alloy connecting block. The expansion groove is connected to the end of the second threaded fixing rod away from the mounting plate. The aluminum alloy connecting block is disposed inside the expansion groove and is connected to the second threaded fixing rod.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. The composite liner used in bauxite ball mills is designed with a modular system consisting of multiple ceramic liner plates. This allows for individual replacement of each ceramic liner plate when wear occurs, saving costs.

[0014] 2. The composite liner used in the ball mill for bauxite ore has a fastening mechanism. The fastening mechanism includes a first threaded groove, a first threaded fixing rod, a second threaded groove, and a second threaded fixing rod. By utilizing the connection between the first and second threaded fixing rods, when one threaded fixing rod is loosened by external force, its rotation and loosening direction are the same as the rotation and fixing direction of the other threaded fixing rod, thus restricting its rotation and limiting its loosening.

[0015] 3. The composite liner used in the ball mill for bauxite ore is equipped with an expansion component, which includes an expansion groove and an aluminum alloy connecting block. The large amount of heat generated during the operation of the ball mill can be used to expand the aluminum alloy connecting block to reinforce the fastening mechanism. At the same time, protrusions are formed on the surface of the ceramic liner plate to help crush the ore.

[0016] 4. The composite liner used in bauxite ball mills is composed of an outer connecting ring, a mounting plate, and a ceramic liner plate to form a multi-layer composite structure, which enhances the overall wear resistance, buffering and noise reduction performance, and facilitates the individual replacement of worn parts. At the same time, the overall installation is not easy to loosen. Attached Figure Description

[0017] Figure 1 This is a front view structural diagram of the present utility model;

[0018] Figure 2 This is a frontal sectional view of the present invention.

[0019] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0020] Figure 4 This is a schematic diagram of the aluminum alloy connecting block of this utility model in its expanded state.

[0021] Figure 5 This is a schematic diagram of the composite structure of the outer connecting ring of this utility model.

[0022] In the diagram: 1. Outer connecting ring; 101. Alloy steel layer; 102. Sound-absorbing cotton layer; 103. Polyurethane layer; 2. Mounting plate; 3. Ceramic inner lining plate; 4. Recess; 5. Rubber pad; 6. First threaded slot; 7. First threaded fixing rod; 8. Second threaded slot; 9. Second threaded fixing rod; 10. Expansion slot; 11. Aluminum alloy connecting block. 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] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] like Figures 1 to 5As shown, this embodiment uses a composite liner for a bauxite ball mill, including an outer connecting ring 1. The outer connecting ring 1 is connected to the inner wall of the ball mill, and the outer connecting ring 1 has a composite structure. An mounting plate 2 is connected to the inner wall of the outer connecting ring 1, and a buffer mechanism is provided between the outer connecting ring 1 and the mounting plate 2. When the ball mill is working, the buffer mechanism can absorb the impact energy of the ore, reducing the transmission of instantaneous peak stress to the outer connecting ring 1 or the inner wall of the ball mill. A modular system is provided on the side of the mounting plate 2 away from the outer connecting ring 1. The modular system is connected to the outer connecting ring 1 through the mounting plate 2 for easy assembly and disassembly. The modular system includes multiple ceramic liner plates 3 attached to the surface of the mounting plate 2 away from the outer connecting ring 1. Eight ceramic liner plates 3 are provided. By setting multiple ceramic liner plates 3... Each ceramic liner plate 3 can be replaced individually, saving costs. Multiple ceramic liner plates 3 are all arc-shaped, and both ends of the ceramic liner plates 3 are provided with staggered protrusions. The arc-shaped structure allows the ceramic liner plates 3 to fit tightly against the surface of the mounting plate 2. The staggered protrusions ensure that adjacent ceramic liner plates 3 can be stably connected and not easily separated. The outer connecting ring 1, the mounting plate 2, and the ceramic liner plates 3 are all provided with a fastening mechanism. An expansion component is provided at the connection between the fastening mechanism and the ceramic liner plates 3. The fastening mechanism can fix the ceramic liner plates 3 to the mounting plate 2 and the connection point is not easy to loosen. At the same time, the expansion component can expand when heated during operation, which strengthens the stability of the connection. The protrusions generated by the expansion can assist the ball mill in crushing the ore.

[0026] Specifically, the outer connecting ring 1 includes an alloy steel layer 101, a sound-absorbing cotton layer 102, and a polyurethane layer 103. The alloy steel layer 101 and the polyurethane layer 103 are located on the side away from and the side closer to the mounting plate 2, respectively. The sound-absorbing cotton layer 102 is located between the alloy steel layer 101 and the polyurethane layer 103. The alloy steel layer 101 increases the overall structural strength of the outer connecting ring 1. The sound-absorbing cotton layer 102 can absorb the noise generated when the ball mill is working. The polyurethane layer 103 further reduces the impact transmission and extends the service life.

[0027] Furthermore, multiple mounting plates 2 are provided at equal angles on the inner wall of the outer connecting ring 1, and each mounting plate 2 has a quarter-circle structure. The center of the circular structure formed by the multiple mounting plates 2 coincides with the center of the outer connecting ring 1, thus ensuring that the mounting plates 2 can fit tightly against the inner wall of the outer connecting ring 1. Each mounting plate 2 connects two ceramic inner lining plates 3.

[0028] Furthermore, the buffer mechanism includes a notch 4 and a rubber pad 5. Multiple notches 4 are opened at equal angles on the inner wall of the outer connecting ring 1. Each of the multiple notches 4 is connected to a rubber pad 5. The surface of the multiple rubber pads 5 away from the notch 4 is connected to multiple mounting plates 2 one by one. When an impact occurs, the rubber pads 5 can absorb the impact energy, thereby extending the overall service life.

[0029] Furthermore, the fastening mechanism includes a first threaded through groove 6, a first threaded fixing rod 7, a second threaded through groove 8, and a second threaded fixing rod 9. The first threaded through groove 6 is opened inside the outer connecting ring 1 and multiple mounting plates 2. The first threaded fixing rod 7 is connected to the interior of each of the multiple first threaded through grooves 6. The second threaded through groove 8 is opened inside the interior of each of the multiple ceramic inner lining plates 3. The second threaded fixing rod 9 is connected to the interior of each of the multiple second threaded through grooves 8. The end of the second threaded fixing rod 9 closest to the outer connecting ring 1 is threaded to the interior of the first threaded fixing rod 7. By threading the first threaded fixing rod 7 into the interior of the first threaded through groove 6, the mounting plate 2 is fixedly connected to the outer connecting ring 1. During connection, care should be taken to align the first threaded through groove 6 and the second threaded through groove 8. Then, the second threaded fixing rod 9 is connected into the interior of the second threaded through groove 8, and the second threaded fixing rod 9 is simultaneously connected to the first threaded fixing rod 7. This allows the ceramic inner lining plate 3 to be fixedly connected to the mounting plate 2. The existence of multiple connection and fixing points enhances the stability of the connection.

[0030] Furthermore, the inner wall threads of the first threaded through groove 6 and the second threaded through groove 8 are opposite in direction, while the surface threads of the first threaded fixing rod 7 and the second threaded fixing rod 9 are in the same direction. With this arrangement, after the first threaded fixing rod 7 and the second threaded fixing rod 9 are connected, when the first threaded fixing rod 7 is loosened by external force, its rotation and loosening direction is exactly the same as the rotation and fixing direction of the second threaded fixing rod 9, thus restricting its rotation and limiting its loosening. Conversely, even if the external force can cause the first threaded fixing rod 7 and the second threaded fixing rod 9 to separate, it still has a significant improvement effect compared to the traditional single thread fixing.

[0031] Furthermore, the expansion assembly includes an expansion groove 10 and an aluminum alloy connecting block 11. The expansion groove 10 is connected to the end of the second threaded fixing rod 9 away from the mounting plate 2. The aluminum alloy connecting block 11 is provided inside the expansion groove 10 and is connected to the second threaded fixing rod 9. When the ball mill is working, the surface of the ceramic inner liner plate 3 is continuously impacted and ground by the ore, and heat is generated on its surface. When the heat is transferred to the aluminum alloy connecting block 11, it will expand to further deepen the connection with the expansion groove 10, thereby strengthening the fastening mechanism. At the same time, the surface of the aluminum alloy connecting block 11 will bulge due to the expansion, which will cooperate with the ceramic inner liner plate 3 to crush the ore.

[0032] The usage method of this embodiment is as follows: First, connect the outer connecting ring 1 to multiple mounting plates 2, and then connect them as a whole to the inner wall of the ball mill. At this time, connect multiple ceramic inner liner plates 3 to the mounting plates 2 in sequence. When connecting the ceramic inner liner plates 3 for the first time, pay attention to aligning the first threaded through groove 6 and the second threaded through groove 8 so as to fix the ceramic inner liner plates 3 through the fastening mechanism. Since the surface of the ceramic inner liner plates 3 is provided with protruding structures, the subsequent ceramic inner liner plates 3 can be directly inserted and fixed. At this time, the overall installation is completed, and the ball mill can be used for ore crushing.

[0033] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A composite liner for a ball mill for bauxite ore, comprising an outer connecting ring (1), characterized in that: The inner wall of the outer connecting ring (1) is connected to the mounting plate (2), and a buffer mechanism is provided between the outer connecting ring (1) and the mounting plate (2). A modular system is provided on the side of the mounting plate (2) away from the outer connecting ring (1). The modular system includes multiple ceramic inner lining plates (3) that are attached to the surface of the mounting plate (2) away from the outer connecting ring (1). The multiple ceramic inner lining plates (3) are all arc-shaped, and both ends of the ceramic inner lining plates (3) are provided with staggered protrusions. The outer connecting ring (1), the mounting plate (2) and the ceramic inner lining plates (3) are all provided with a fastening mechanism, and an expansion component is provided at the connection between the fastening mechanism and the ceramic inner lining plate (3).

2. The composite liner for a bauxite ball mill according to claim 1, characterized in that: The outer connecting ring (1) includes an alloy steel layer (101), a sound-absorbing cotton layer (102), and a polyurethane layer (103). The alloy steel layer (101) and the polyurethane layer (103) are located on the side away from and close to the mounting plate (2), respectively, and the sound-absorbing cotton layer (102) is located between the alloy steel layer (101) and the polyurethane layer (103).

3. The composite liner for a bauxite ball mill according to claim 1, characterized in that: The mounting plate (2) is provided at equal angles on the inner wall of the outer connecting ring (1), and the multiple mounting plates (2) are all in a quarter-circle structure. The center of the circular structure formed by the multiple mounting plates (2) coincides with the center of the outer connecting ring (1).

4. The composite liner for a bauxite ball mill according to claim 1, characterized in that: The buffer mechanism includes a notch (4) and a rubber pad (5). Multiple notches (4) are opened at equal angles on the inner wall of the outer connecting ring (1). A rubber pad (5) is connected inside each of the multiple notches (4). The end surface of the multiple rubber pads (5) away from the notch (4) is connected to the multiple mounting plates (2) one by one.

5. The composite liner for a bauxite ball mill according to claim 1, characterized in that: The fastening mechanism includes a first threaded through groove (6), a first threaded fixing rod (7), a second threaded through groove (8), and a second threaded fixing rod (9). The first threaded through groove (6) is opened inside the outer connecting ring (1) and the plurality of mounting plates (2). The first threaded fixing rod (7) is connected inside the plurality of first threaded through grooves (6). The second threaded through groove (8) is opened inside the plurality of ceramic inner lining plates (3). The second threaded fixing rod (9) is connected inside the plurality of second threaded through grooves (8). The end of the second threaded fixing rod (9) near the outer connecting ring (1) is threaded to the inside of the first threaded fixing rod (7).

6. The composite liner for a bauxite ball mill according to claim 5, characterized in that: The inner wall threads of the first threaded through groove (6) and the second threaded through groove (8) are opposite in direction, while the surface threads of the first threaded fixing rod (7) and the second threaded fixing rod (9) are in the same direction.

7. The composite liner for a bauxite ball mill according to claim 1, characterized in that: The expansion assembly includes an expansion slot (10) and an aluminum alloy connecting block (11). The expansion slot (10) is connected to the end of the second threaded fixing rod (9) away from the mounting plate (2). The aluminum alloy connecting block (11) is provided inside the expansion slot (10) and is connected to the second threaded fixing rod (9).

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