Ball mill liner structure facilitating installation and positioning

Abstract

The utility model relates to the field of ball mill lining plate, especially convenient to install and position's ball mill lining plate structure, including ball mill body, still including have lining plate no.

Description

Technical Field

[0001] This utility model relates to the field of ball mill liners, and more particularly to a ball mill liner structure that is easy to install and position. Background Technology

[0002] Ball mill liners are key components installed on the inner wall of the mill cylinder. They are typically made of wear-resistant materials such as high-manganese steel, alloy steel, or rubber. Their structural designs include various forms such as corrugated, stepped, strip, or categorized liners, designed to optimize grinding efficiency by increasing the friction between the steel balls and the material and the drop height. The liners are fixed by bolts or inlays, forming a protective layer to reduce cylinder wear. Their shape and arrangement can adjust the material flow trajectory and the movement of the steel balls, balancing impact resistance and service life. They are a crucial component affecting grinding efficiency and energy consumption.

[0003] Currently, ball mill liners are mainly fixed with bolts, requiring a large number of high-strength bolts for fastening. This not only makes the installation and disassembly process cumbersome and time-consuming, increasing maintenance costs, but also makes them prone to problems such as bolt loosening, breakage, or liner displacement during long-term operation, affecting equipment stability and service life. The presence of bolt holes may weaken the structural strength of the liner and lead to material blockage or corrosion risks. Therefore, there is an urgent need to optimize the design to reduce reliance on bolts and improve installation convenience and reliability.

[0004] Therefore, the ball mill liner mainly uses bolt fixing, which requires a large number of high-strength bolts for fastening. This not only makes the installation and disassembly process cumbersome and time-consuming, increasing maintenance costs, but also easily leads to problems such as bolt loosening, breakage, or liner displacement during long-term operation, affecting the stability and service life of the equipment. Therefore, a ball mill liner structure that is easy to install and position can be designed. Utility Model Content

[0005] To overcome the problem that ball mill liners are mainly fixed with bolts, a large number of high-strength bolts are required for fastening. This not only makes the installation and disassembly process cumbersome and time-consuming, increasing maintenance costs, but also makes the bolts prone to loosening, breaking, or liner displacement during long-term operation, affecting the stability and service life of the equipment.

[0006] The technical solution of this utility model is as follows: a ball mill liner structure that is easy to install and position, including a ball mill body; and a second liner. A first liner is located at the rear of the ball mill body. The front end of the first liner is movably connected to the second liner. The front end of the second liner is located to the third liner. Multiple mounting holes are provided on the outer surface of the ball mill body. A bolt is movably connected to the inside of the first liner, and the bolt is threaded to the ball mill body. Grooves are provided at the left ends of the first, second, and third liners. A slider is fixedly connected to the right ends of the first, second, and third liners. A connecting plate is fixedly connected to the front ends of the first, second, and third liners. A connecting groove is provided at the rear ends of the second and third liners, and the connecting plate is movably connected to the connecting groove.

[0007] Preferably, liner one is fixed to the ball mill body with bolts and mounting holes. Then, liner two is inserted into liner one through connecting plate and connecting groove. Next, liner three is inserted into liner two and fixed with bolts. Finally, another liner two is inserted into the front side of liner three, and another liner one is fixed with bolts to complete the installation. The grooves on the sides of liner one, liner two and liner three and the slider provide auxiliary fixation when installed on the left and right sides. This insert splicing structure reduces the reliance on a large number of high-strength bolts in the traditional pure bolt fixing method, simplifies the installation and disassembly process, reduces maintenance costs, and ensures the stability and reliability of the liner system.

[0008] Preferably, two circular grooves are formed inside the first, second, and third liner plates, and threaded short rods are installed inside the circular grooves.

[0009] Preferably, liner plate one, liner plate two and liner plate three are threadedly connected to the threaded short rod, and a square bar is fixedly connected to the top of the threaded short rod.

[0010] Preferably, the rear end of the ball mill body is movably connected with six side liners, and the inside of the side liners is movably connected with two bolts.

[0011] Preferably, bolt two is threadedly connected to the ball mill body, and the outer surface of the ball mill body is provided with a movable door.

[0012] Preferably, the surfaces of liner plate one, liner plate two, and liner plate three are wavy.

[0013] Preferably, the bottom of the threaded short rod is provided with balls.

[0014] The beneficial effects of this utility model are:

[0015] Liner plate one is fixed to the ball mill body with bolts and mounting holes. Then, liner plate two is inserted into liner plate one through connecting plate and connecting groove. Next, liner plate three is inserted into liner plate two and fixed with bolts. Finally, another liner plate two is inserted into the front side of liner plate three, and another liner plate one is fixed with bolts to complete the installation. The grooves on the sides of liner plate one, liner plate two and liner plate three and the slider provide auxiliary fixation when installing left and right. This insert splicing structure reduces the reliance on a large number of high-strength bolts in the traditional pure bolt fixing method, simplifies the installation and disassembly process, reduces maintenance costs, and ensures the stability and reliability of the liner plate system. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic of this utility model;

[0017] Figure 2 The diagram shown is a three-dimensional top cross-sectional view of the present invention.

[0018] Figure 3 The diagram shown is a three-dimensional side sectional view of the present invention.

[0019] Figure 4 The diagram shown is a three-dimensional side sectional view of the liner of this utility model.

[0020] Figure 5 The diagram shown is a three-dimensional rear cross-sectional view of the present invention.

[0021] Explanation of reference numerals in the attached drawings: 1. Ball mill body; 2. Liner plate one; 3. Mounting hole; 4. Bolt one; 5. Groove; 6. Slider; 7. Connecting plate; 8. Connecting groove; 9. Liner plate two; 10. Liner plate three; 11. Circular groove; 12. Threaded short rod; 13. Square bar; 14. Side liner plate; 15. Bolt two; 16. Movable door. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figures 1-3This utility model provides an embodiment of a ball mill liner structure for easy installation and positioning, comprising a ball mill body 1 and a second liner 9. A first liner 2 is located at the rear of the ball mill body 1. The front end of the first liner 2 is movably connected to the second liner 9. A third liner 10 is located at the front end of the second liner 9. Multiple mounting holes 3 are provided on the outer surface of the ball mill body 1. A first bolt 4 is movably connected to the inside of the first liner 2, threadedly connected to the ball mill body 1. Grooves 5 are provided at the left ends of the first liner 2, the second liner 9, and the third liner 10. A slider 6 is fixedly connected to the right ends of the first liner 2, the second liner 9, and the third liner 10. A connecting plate 7 is fixedly connected to the front ends of the first liner 2, the second liner 9, and the third liner 10. The rear end of the 0 has a connecting groove 8, and the connecting plate 7 is movably connected to the connecting groove 8. The liner 1 2 is fixed to the ball mill body 1 by bolts and mounting holes 3. Then, the liner 2 9 is inserted into the liner 1 2 through the connecting plate 7 and the connecting groove 8. Then, the liner 3 10 is inserted into the liner 2 9 and fixed with bolts. Finally, another liner 2 9 is inserted into the front side of the liner 3 10, and another liner 1 2 is fixed with bolts to complete the installation. The grooves 5 on the sides of the liner 1 2, liner 2 9 and liner 3 10 and the slider 6 provide auxiliary fixation when installed on the left and right sides. This insert splicing structure reduces the reliance on a large number of high-strength bolts in the traditional pure bolt fixing method, simplifies the installation and disassembly process, reduces maintenance costs, and ensures the stability and reliability of the liner system.

[0024] Please see Figures 2-5 In this embodiment, two circular grooves 11 are formed inside the first liner 2, the second liner 9, and the third liner 10. Threaded short rods 12 are provided inside the circular grooves 11. The first liner 2, the second liner 9, and the third liner 10 are threadedly connected to the threaded short rods 12. A square bar 13 is fixedly connected to the top of the threaded short rod 12. During installation, the bottom of the threaded short rod 12 contacts the ground, and the ball bearings at the bottom of the threaded short rod 12 rotate on the surface of the ball mill body 1, facilitating the movement of the first liner 2, the second liner 9, and the third liner 10, reducing the physical effort required for handling during installation. When moved to the installation position, the threaded short rod 12 is rotated by the long bar to move it upwards until the threaded short rod 12 is completely inside the first liner 2, the second liner 9, and the third liner 10. Six side liners 14 are movably connected to the rear end of the ball mill body 1. Bolts 2 15 are movably connected inside the side liners 14, and the side liners 14 are fixed to the inner side of the ball mill body 1 by bolts.

[0025] Please see Figures 3-5In this embodiment, bolt 2 15 is threadedly connected to the ball mill body 1. The outer surface of the ball mill body 1 is provided with a movable door 16. During installation, the movable door 16 is opened to allow the liner 1 2, liner 2 9, and liner 3 10 to be hoisted into the ball mill body 1 by a crane for installation. The movable door 16 is located in the middle position for easy and quick transportation to the corresponding position. The surfaces of liner 1 2, liner 2 9, and liner 3 10 are wavy. The materials used for liner 1 2, liner 2 9, and liner 3 10 are alloy steel. The wavy surface of liner 1 2, liner 2 9, and liner 3 10 increases the throwing height of the grinding media and enhances the impact force. The alloy steel is enhanced in hardness and wear resistance by adding elements such as chromium and molybdenum, making it suitable for use in small and medium-sized mills or corrosive environments. The bottom of the threaded short rod 12 is provided with ball bearings.

[0026] During installation, the movable door 16 is opened to hoist liner 2, liner 9, and liner 3 10 into the ball mill body 1 using a crane. The movable door 16 is located in the middle for easy and quick transport to the corresponding positions. During installation, the bottom of the threaded short rod 12 contacts the ground, and the ball bearings at the bottom of the threaded short rod 12 rotate on the surface of the ball mill body 1, facilitating the movement of liner 2, liner 9, and liner 3 10 and reducing the physical effort required for handling during installation. When moved to the installation position, the threaded short rod 12 is rotated upwards using a long rod until it is completely inside liner 2, liner 9, and liner 3 10. Then, liner 2 is first installed and secured using bolt 4 and mounting hole 3. Then, liner 29 is inserted onto liner 12 via connecting plate 7 and connecting groove 8. Next, liner 310 is inserted onto liner 29. Liner 310 is simultaneously fixed with bolt 4. Another liner 29 is inserted into the front side of liner 310. Finally, another liner 12 is fixed to the ball mill body 1 with bolt 4. The grooves 5 and sliders 6 on the sides of liner 12, liner 29 and liner 310 provide fixation for left and right installation. Side liner 14 is fixed to the inner side of the ball mill body 1 with bolts. The surfaces of liner 12, liner 29 and liner 310 are wavy, which increases the throwing height of the grinding media and enhances the impact force. The alloy steel has increased hardness and wear resistance by adding elements such as chromium and molybdenum, making it suitable for use in small and medium-sized mills or corrosive environments.

[0027] Through the above steps, liner 12 is installed and fixed using bolt 14 and mounting hole 3. Then, liner 29 is inserted onto liner 12 using connecting plate 7 and connecting groove 8. Next, liner 30 is inserted onto liner 29 and fixed using bolt 14. Another liner 29 is inserted into the front side of liner 30. Finally, another liner 12 is fixed onto the ball mill body 1 using bolt 14. The grooves 5 and sliders 6 on the sides of liner 12, liner 29, and liner 30 provide fixation for left and right installation. By setting an insert-type splicing between different liners, the use of bolts is reduced, which solves the problem that ball mill liners are mainly fixed by bolts, requiring a large number of high-strength bolts for fastening, which not only makes the installation and disassembly process cumbersome and time-consuming, but also increases maintenance costs.

Claims

1. A ball mill liner structure that facilitates installation and positioning, comprising a ball mill body (1); characterized in that: It also includes a second liner (9), a first liner (2) is provided at the rear of the ball mill body (1), the front end of the first liner (2) is movably connected to the second liner (9), the front end of the second liner (9) is provided to the third liner (10), the outer surface of the ball mill body (1) is provided with multiple mounting holes (3), the interior of the first liner (2) is movably connected to a bolt (4), the bolt (4) is threadedly connected to the ball mill body (1), the left end of the first liner (2), the second liner (9) and the third liner (10) are provided with grooves (5), the right end of the first liner (2), the second liner (9) and the third liner (10) are fixedly connected to a slider (6), the front end of the first liner (2), the second liner (9) and the third liner (10) are fixedly connected to a connecting plate (7), the rear end of the second liner (9) and the third liner (10) are provided with connecting grooves (8), and the connecting plate (7) is movably connected to the connecting grooves (8).

2. The ball mill liner structure for easy installation and positioning according to claim 1, characterized in that: The interior of liner 1 (2), liner 2 (9) and liner 3 (10) has two circular grooves (11), and a threaded short rod (12) is provided inside the circular groove (11).

3. The ball mill liner structure for easy installation and positioning according to claim 2, characterized in that: Liner plate 1 (2), liner plate 2 (9) and liner plate 3 (10) are threadedly connected to threaded short rod (12), and a square bar (13) is fixedly connected to the top of threaded short rod (12).

4. The ball mill liner structure for easy installation and positioning according to claim 1, characterized in that: The rear end of the ball mill body (1) is movably connected to six side liners (14), and the inside of the side liners (14) is movably connected to two bolts (15).

5. The ball mill liner structure for easy installation and positioning according to claim 4, characterized in that: Bolt 2 (15) is threadedly connected to the ball mill body (1), and the outer surface of the ball mill body (1) is provided with a movable door (16).

6. The ball mill liner structure for easy installation and positioning according to claim 3, characterized in that: The surfaces of liner 1 (2), liner 2 (9) and liner 3 (10) are wavy.

7. The ball mill liner structure for easy installation and positioning according to claim 6, characterized in that: The bottom of the threaded short rod (12) is provided with balls.

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