A tenon-and-mortise fixing structure of a ball mill composite lining plate

Abstract

The utility model discloses a tenon and mortise fixing structure of ball mill composite lining plate, including ball mill shell, the both ends of casing are connected with the head through flange, the inside of casing is provided with the first lining plate and second lining plate of circumferential array, this first lining plate and second lining plate are staggered arrangement in circumferential direction between them, form a circle, the both ends are provided with the third lining plate in the inside of casing, and this third lining plate is located between the first lining plate and head, only need to lay in the below in the installation first lining plate and second lining plate in row, then directly utilize bolt and can carry out the quick combination fixing of two first lining plates and a second lining plate to it once, has improved the fixing speed of each lining plate, or will insert mortise pole inside and complete the quick combination connection of whole row lining plate, need not fix to it one by one, further improved the fixing speed of lining plate, can realize local disassembly simultaneously, simple and convenient, has saved maintenance time and maintenance cost.

Description

Technical Field

[0001] This utility model belongs to the field of ball mill assembly technology, specifically, it relates to a tenon and mortise fixing structure for a ball mill composite liner. Background Technology

[0002] A ball mill is a type of grinding mill that uses a certain number of steel balls (or other grinding media) as grinding media inside a cylinder. By rotating the cylinder, the grinding media and the material undergo impact, compression, and shearing within the cylinder, thereby achieving the crushing, grinding, and mixing of the material. Therefore, to avoid the impact of steel balls or other grinding media on the inner wall of the cylinder, replaceable liners need to be installed on the inner wall of the cylinder during use to absorb the impact force from the steel balls.

[0003] A Chinese patent with publication number CN219073121U discloses a ball mill liner anti-detachment device, which includes a housing, multiple liners, and a fixing device. The fixing device consists of bolts and related structures. When installing the liners, the bolts cooperate with the pre-drilled screw holes in the liners to fix the multiple liners one by one inside the housing.

[0004] Existing ball mill liners are installed by laying the liner inside the ball mill and then fixing it firmly to the inner wall of the ball mill with bolts.

[0005] In the above-disclosed technical solutions, bolts are used to fix each liner plate in sequence. However, since the liner plates have a large weight, the traditional liner plate fixing method is time-consuming and labor-intensive, and replacing the liner plates is very cumbersome. Utility Model Content

[0006] To address the problem that the existing technology of using bolts to fix each liner plate sequentially is time-consuming and labor-intensive, this utility model provides a tenon and mortise fixing structure for ball mill composite liners.

[0007] The objective of this utility model can be achieved through the following technical solutions:

[0008] A tenon and mortise fixing structure for a composite liner plate for a ball mill includes a ball mill shell; both ends of the shell are connected to end caps via flanges.

[0009] The shell is provided with a first liner plate and a second liner plate arranged in a circumferential array. The first liner plate and the second liner plate are staggered in the circumferential direction to form a circular structure. A third liner plate is provided at both ends of the shell, and the third liner plate is located between the first liner plate and the end cap.

[0010] The first liner has a T-shaped cut at its bottom; the second liner has a protrusion fixedly attached to its bottom; the first liner is located on the protrusions of two adjacent second liners, and the protrusions are used to fit the T-shaped cut and are individually fixed with bolts.

[0011] Furthermore, a mortise bar is provided at the position between adjacent second liners below the first liner; the mortise bar is fixed to two limiting parts on both sides, which are used to fix any row of the circular structure composed of the T-shaped cut, the protrusion and the two bolts.

[0012] Furthermore, cross-sectional observation reveals that the upper part of the first liner plate exhibits a semi-circular protruding structure, while the lower part has a T-shaped groove structure.

[0013] When viewed in cross-section, the upper part of the second liner also presents a semi-circular convex structure, while the lower part presents an inverted T-shaped structure.

[0014] The outer surface of the mortise fits into the T-shaped cut; the upper and lower surfaces of the mortise are respectively attached to the lower surface of the first liner and the inner wall of the shell.

[0015] Furthermore, the gap between the second liner plates is the width of the lower end of the T-shaped cut.

[0016] Furthermore, a fixing groove is provided inside the mortise bar, and the two ends of the fixing groove are fixed to the side wall of the ball mill housing by bolts, which is used to fix the position of the first liner and the second liner.

[0017] Furthermore, the side of the second liner closest to the inner wall of the housing is a fitted arc shape, and the sides of the first and second liners that are close to each other are fitted together.

[0018] The beneficial effects of this utility model are:

[0019] This utility model achieves the riveting and fixing of the first, second, and third liner plates through the cooperation of the end cap and the mortise bar. During installation, only the first and second liner plates need to be laid in a row below, and then two first liner plates and one second liner plate can be quickly combined and fixed at one time using bolts, which improves the fixing speed of each liner plate. Alternatively, the mortise bar can be inserted inside to complete the quick combination and connection of the entire row of liner plates without fixing them one by one, further improving the fixing speed of the liner plates. At the same time, partial disassembly can be achieved, which is simple and convenient, saving maintenance time and maintenance costs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a cross-sectional view of the present invention;

[0023] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0024] Figure 4 This is a schematic diagram of the T-shaped cut in this utility model;

[0025] Figure 5 This is a schematic diagram of the mortise rod in this utility model;

[0026] Figure 6 This is a schematic diagram of the limiting component in this utility model;

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. Shell; 2. End cap; 3. First liner; 4. Second liner; 5. Third liner; 6. T-shaped cut; 7. Protrusion; 8. Tenon; 9. Limiting part; 10. Fixing groove. Detailed Implementation

[0029] 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.

[0030] Please see Figure 1 - Figure 3 As shown, a tenon and mortise fixing structure for a ball mill composite liner includes a ball mill housing 1; end caps 2 are connected to both ends of the housing 1 via flanges.

[0031] The housing 1 has a first liner 3 and a second liner 4 arranged in a circular array inside. The first liner 3 and the second liner 4 are staggered in the circumferential direction to form a circle and are made of rubber composite material. The housing 1 has a third liner 5 at both ends inside. The third liner 5 is located between the first liner 3 and the end cap 2.

[0032] Please refer to it again. Figures 3-4 As shown, a T-shaped cutout 6 is provided at the bottom of the first liner 3. When viewed through the cross-section, the upper part of the first liner 3 presents a semi-circular protruding structure, and the lower part presents a T-shaped groove structure.

[0033] The second liner 4 has a protrusion 7 fixedly attached to its lower part. When viewed in cross-section, the upper part of the second liner 4 also presents a semi-circular protrusion structure, and the lower part presents an inverted T-shaped structure.

[0034] The first liner 3 is located on the protrusions 7 of two adjacent second liners 4, and the gap between the second liners 4 is the width of the lower end of the T-shaped cut 6.

[0035] Please refer to it again. Figure 3 and Figure 5 As shown, a mortise bar 8 is provided at the position between the adjacent second liner 4 and below the first liner 3. The two sides of the mortise bar 8 are fixed with limiting parts 9, and the outer periphery of the mortise bar 8 fits with the T-shaped cutout 6. The upper and lower surfaces of the mortise bar 8 are respectively attached to the lower surface of the first liner 3 and the inner wall of the shell 1.

[0036] The inner part of the mortise bar 8 is provided with a fixing groove 10. The two ends of the fixing groove 10 are fixed to the side wall of the ball mill housing by bolts, which is used to fix the position of the first liner 3 and the second liner 4.

[0037] Please refer to it again. Figure 4 As shown, the side of the second liner 4 closest to the inner wall of the housing 1 is a fitted arc shape, and the sides of the first liner 3 and the second liner 4 that are close to each other are fitted together.

[0038] During installation:

[0039] First, fix one of the end caps 2 to one end of the housing 1, and then install the third liner 5 on the end cap 2;

[0040] The second step is to lay rows of first liner plates 3 and second liner plates 4 directly below the shell 1, and insert the mortise rod 8 between the first liner plates 3 and second liner plates 4, and then fix the mortise rod 8 to the inner wall of the shell 1 with bolts.

[0041] Third step, rotate housing 1 so that the position where the first liner 3 and the second liner 4 are not laid is directly below housing 1;

[0042] The fourth step is to lay the unfixed first liner 3 and second liner 4 next to the already fixed first liner 3 and second liner 4, and then use a mortise bar 8 and bolts to fix them together again.

[0043] Fifth, repeat the process of the third and fourth steps until all the first liner plates 3 and the second liner plates 4 are combined to form a circular structure connected end to end;

[0044] The sixth step is to fix the remaining third liner 5 and end cap 2 to the other end of the housing 1, thus completing the installation of all the first liners 3, second liners 4 and third liners 5.

[0045] During disassembly:

[0046] The first step is to remove one of the end caps 2 on the housing 1, along with the third liner 5 at that location, from the flange;

[0047] The second step is to rotate the cylinder until the damaged first liner 3 or the second liner 4 is directly below the shell 1;

[0048] The third step is to use tools to remove the damaged first liner 3 or second liner 4 along with the bolts, and then replace and install it.

[0049] It is worth noting that when assembling the first liner 3 or the second liner 4, the mortise bar 8 can be omitted. The T-shaped cut 6 on the first liner 3 can be pressed down directly using bolts to achieve the pressing and fixing of each first liner 3. Since the protrusion 7 on the second liner 4 is pressed down by the first liner 3, the second liner 4 can be fixed by fixing only the first liner 3. This also achieves quick installation and removal of the first liner 3 and the second liner 4.

[0050] In the existing technology, the lining plates are individual units and all are identical, so each lining plate needs to be fixed individually. By using the end cap 2 and the mortise rod 8, the first lining plate 3, the second lining plate 4, and the third lining plate 5 can be riveted and fixed. During installation, the first lining plate 3 and the second lining plate 4 only need to be laid in a row below, and then two first lining plates 3 and one second lining plate 4 can be quickly combined and fixed at one time using bolts, which improves the fixing speed of each lining plate. Alternatively, the mortise rod 8 can be inserted inside to complete the quick combination connection of the entire row of lining plates without fixing them one by one, further improving the fixing speed of the lining plates. At the same time, partial disassembly can be achieved, which is simple and convenient, saving maintenance time and maintenance costs.

[0051] The first liner 3, the second liner 4, and the third liner 5 made of rubber composite material not only reduce its weight, making transportation and installation easier, but also reduce vibration and noise pollution.

[0052] In the description of this specification, the references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0053] The above description is merely an example and illustration of the structure of this utility model. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, all of which should fall within the protection scope of this utility model.

Claims

1. A tenon and mortise fixing structure for a ball mill composite liner, characterized in that: Includes a ball mill housing (1); both ends of the housing (1) are connected to end caps (2) via flanges; The shell (1) is provided with a first liner (3) and a second liner (4) arranged in a circular array. The first liner (3) and the second liner (4) are arranged alternately in the circumferential direction to form a circular structure. The shell (1) is provided with a third liner (5) at both ends. The third liner (5) is located between the first liner (3) and the end cap (2). The first liner (3) has a T-shaped cut (6) below it; the second liner (4) has a protrusion (7) fixedly attached to its lower part; the first liner (3) is located on the protrusion (7) of the two adjacent second liners (4), and the protrusion (7) is used to cooperate with the T-shaped cut (6) and is individually fixed with bolts.

2. The tenon and mortise fixing structure for a ball mill composite liner according to claim 1, characterized in that: Corresponding to the position below the first liner (3), a mortise bar (8) is provided between the adjacent second liner (4); the two sides of the mortise bar (8) are fixed with limiting parts (9), which are used to cooperate with the T-shaped cut (6), the protrusion (7) and the two bolts to fix any row of the circular structure.

3. The tenon and mortise fixing structure for a ball mill composite liner according to claim 2, characterized in that: The upper cross section of the first liner (3) is a semi-circular protrusion structure, and the lower part is a T-shaped groove structure; The upper cross section of the second liner (4) also presents a semi-circular protruding structure, and the lower part presents an inverted T-shaped structure; The outer surface of the mortise rod (8) fits into the T-shaped cut (6); the upper and lower surfaces of the mortise rod (8) are respectively attached to the lower surface of the first liner (3) and the inner wall of the shell (1).

4. The tenon and mortise fixing structure for a ball mill composite liner according to claim 1, characterized in that: The gap between the second liner plates (4) is the width of the lower end of the T-shaped cut (6).

5. The tenon and mortise fixing structure for a ball mill composite liner according to claim 2, characterized in that: The mortise bar (8) has a fixing groove (10) inside. The two ends of the fixing groove (10) are fixed to the side wall of the ball mill housing (1) by bolts, which is used to fix the position of the first liner (3) and the second liner (4).

6. The tenon and mortise fixing structure for a ball mill composite liner according to claim 1, characterized in that: The side of the second liner (4) closest to the inner wall of the shell (1) is an arc shape, and the sides of the first liner (3) and the second liner (4) that are close to each other are in contact with each other.

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