Lining plate combined structure of ore grinding machine

Abstract

The utility model relates to a lining plate combined structure of an ore grinding machine, which is provided with a sleeve, a lining plate assembly formed by encircling a plurality of lining plate single bodies is arranged in the sleeve, the lining plate assembly is of an annular structure, the lining plate single bodies are arranged along the length direction of the sleeve, and the lining plate single bodies are attached to the inner cavity wall of the sleeve to form a circumference in a surrounding manner. The adjacent lining plate single bodies are mutually embedded and matched in the length direction of the sleeve, end buckling pieces are correspondingly arranged at the ends of the lining plate assemblies, the end buckling pieces buckle the ends of the lining plate assemblies to the inner cavity wall of the sleeve, a plurality of installation counter bores are formed in the annular inner sides of the end buckling pieces, the end buckling pieces are fixed to the inner cavity wall of the sleeve, and the installation counter bores are matched with the installation counter bores. An end cover plate of an annular structure is arranged on the outer side of the end buckling piece, the end cover plate limits the end buckling piece from the annular inner side position of the end buckling piece, and the end buckling piece and the end cover plate are fixedly connected. The anti-corrosion barrel has a good protection effect, and the characteristic of corrosion resistance in the barrel body can be improved.

Description

Technical Field

[0001] The utility model relates to the field of mineral processing equipment, in particular to a grinding mill lining plate combination structure. Background Art

[0002] Lithium is a vital mineral resource, playing an increasingly crucial role in the development of human civilization. Although known as a "rare metal," lithium's abundance in the Earth's crust is only 0.0065%, significantly greater than the reserves of more common metals like copper, lead, and zinc. Mills are widely used in the mineral processing industry. They are key equipment and the primary consumer of electricity and spare parts. Improving mill efficiency and reducing these consumptions are key challenges. The drum lining accounts for the vast majority of mill linings, so addressing drum lining wear is crucial. Mill linings are one of the primary consumable components of mills and require strong resistance to impact, corrosion, and wear. Mill linings have a short service life, making replacement labor-intensive, increasing downtime and reducing mill efficiency. Liners wear rapidly, especially in the middle and late stages of wear, when damage increases, necessitating timely replacement to prevent wear on the drum. Uneven lining wear impairs the effective operation of the grinding media, reducing grinding efficiency and increasing electricity consumption.

[0003] The inner wall of an existing grinding mill cylinder is assembled from multiple lining plates, with numerous joints between them. Over time, these plates can become loose due to impact, creating gaps between them. Crushed material can become trapped in these gaps, making it difficult to clean the remaining material. Existing grinding mill liners are numerous, and all require large rivets or fasteners to be installed within the mill body. These fasteners are easily damaged by erosion from the slurry during operation. Utility Model Content

[0004] The applicant has determined that the inner wall of the above-mentioned existing grinding mill cylinder is assembled by multiple lining plates, there are certain gaps between the grinding mill liners, the crushed materials will be stuck in the gaps, there are many fasteners, and they are easily damaged by erosion of the slurry. Therefore, a rationally structured grinding mill lining structure is provided, which adopts a design without exposed fasteners, can improve the corrosion resistance of the inside of the cylinder and better the overall force.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A grinding mill liner combination structure comprises a sleeve, wherein a liner assembly formed by a plurality of liner monomers is arranged inside the sleeve, the liner assembly is annular in structure, the liner monomers are arranged along the length direction of the sleeve, the liner monomers are abutted against the inner cavity wall of the sleeve to form a circumference, and adjacent liner monomers are interlocked and matched with each other along the length of the sleeve, and end fasteners are provided at the ends of the liner assembly, and the end fasteners fasten the ends of the liner assembly to the inner cavity wall of the sleeve, and a plurality of mounting countersunk holes are provided on the inner side of the ring of the end fasteners, and bolts in the mounting countersunk holes fix the end fasteners to the inner cavity wall of the sleeve, and an end cover plate of annular structure is provided on the outer side of the end fasteners, and the end cover plate limits the end fasteners from the inner side of the ring of the end fasteners, and the end fasteners and the end cover plate are fixedly connected.

[0007] As a further improvement of the above technical solution:

[0008] The mating surfaces of adjacent lining plate units are provided with triangular wave grooves or wavy grooves that can be used for embedding.

[0009] The end fasteners are annular in structure and are attached to the outer sides of the corresponding ends of the liner assembly.

[0010] An annular fastening step is provided on the outer periphery of the surface of the end fastener facing the liner assembly. The fastening step is on the end of the liner assembly, closing the end of the liner assembly from the front and forming a limiting fit from the inside of the liner assembly.

[0011] A sealing ring is provided at a position on the buckling step that cooperates with the lining plate assembly.

[0012] An annular vertical rib is provided on the inner surface of the end cover plate facing the end fastener, and the vertical rib is inserted into the inner side of the ring of the end fastener to limit the end fastener from the inner side of the ring of the end fastener, and at the same time the end cover plate is sealed on the outer side of the end fastener.

[0013] A sealing ring is provided on the portion of the end cover plate that cooperates with the end fastening piece.

[0014] A plurality of cover plate countersunk holes are provided on the outer surface of the end cover plate, and bolts are used in the cover plate countersunk holes to firmly fix the end cover plate on the outer surface of the end fastening piece.

[0015] A filler sheet is provided inside the liner sheet unit along the longitudinal direction.

[0016] A circular passage opening is provided in the center of the end cover.

[0017] The beneficial effects of the utility model are as follows:

[0018] The utility model uses end fasteners to seal and limit the ends of the liner monomers, and uses end covers to seal and limit the end fasteners, especially to seal the bolt parts on the end fasteners, so that no assembled parts are directly exposed to the ore slurry, effectively protecting the various structural parts of the sleeve from corrosion.

[0019] The utility model adopts a structural design without exposed fasteners, which has a good protective effect and can improve the corrosion resistance of the cylinder body. No nails are exposed in the slurry, which reduces the number of installed fasteners, facilitates installation, and improves installation efficiency. The liner units are embedded in each other in the length direction, the number of units is smaller, the overall force is applied, and the strain performance is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the disassembly of the present utility model.

[0021] Figure 2 It is a cross-sectional schematic diagram of the present invention.

[0022] Figure 3 This is a schematic diagram of the liner assembly of the utility model.

[0023] Figure 4 Schematic diagram of the end fastener of the present invention.

[0024] Figure 5 This is a schematic diagram of the end cover of the present invention.

[0025] Explanation of the marks in the figure: 1. Sleeve; 2. Liner unit; 3. Liner assembly; 4. End fastener; 5. End cover; 6. Mounting countersunk hole; 7. Fastening step; 8. Cover countersunk hole; 9. Vertical rib. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0027] The present invention is described more fully below with reference to the accompanying drawings, which illustrate various aspects of the present invention. The present invention may be implemented in various forms and should not be construed as limited to the various aspects of the present invention presented in this implementation section. Unless otherwise defined, all terms used herein (including industry terms) have the same meanings as commonly understood by persons of ordinary skill in the art to which the present invention pertains.

[0028] Various aspects of the present invention will be described below with reference to the accompanying drawings, which are schematic illustrations of idealized configurations of the present invention. As such, variations in the shapes of these illustrations are to be expected, for example, as a result of manufacturing techniques and / or tolerances. The various aspects of the present invention shown in the drawings may not necessarily be drawn to scale. Furthermore, some of the drawings have been simplified for the sake of clarity. Consequently, the drawings may not depict all of the various components of a given apparatus (e.g., device) or method. Therefore, the components shown in the drawings are schematic in nature, and their shapes are not intended to illustrate the precise shape of the components and are not intended to limit the scope of the present invention.

[0029] Reference Figures 1 to 5 As shown, the grinding mill liner assembly structure described in the present invention comprises a sleeve 1, the interior of which is a hollow cavity. A liner assembly 3 composed of a plurality of liner units 2 is disposed within the sleeve 1. The liner assembly 3 is an annular structure. The liner units 2 are disposed along the length of the sleeve 1, resting against the inner cavity wall of the sleeve 1 to form a circumference. Adjacent liner units 2 engage with each other along the length of the sleeve 1. Preferably, triangular wave grooves or wavy grooves are provided on the mating surfaces of the adjacent liner units 2 for engagement.

[0030] An end fastener 4 is provided at the end of the liner assembly 3. The end fastener 4 adopts an annular structure and is abutted against the outer side of the corresponding end of the liner assembly 3. An annular fastening step 7 is provided on the surface of the end fastener 4 facing the liner assembly 3. As seen from the annular cross-section of the end fastener 4, the fastening step 7 forms a right-angled step. The fastening step 7 is on the end of the liner assembly 3, closing the end of the liner assembly 3 from the front and forming a limiting fit from the inside of the liner assembly 3. The end fastener 4 fastens the end of the liner assembly 3 to the inner cavity wall of the sleeve 1. Preferably, a sealing ring is provided on the fastening step 7 at the position that cooperates with the liner assembly 3.

[0031] A plurality of mounting countersunk holes 6 are provided on the inner side of the ring of the end fastener 4 , and corresponding bolts are installed in the mounting countersunk holes 6 . After the bolts pass through the end fastener 4 , the end fastener 4 is firmly fixed to the inner cavity wall of the sleeve 1 .

[0032] An annular end cover plate 5 is provided on the outside of the end fastener 4. A circular passage opening is provided in the center of the end cover plate 5. An annular vertical rib 9 is provided on the inner surface of the end cover plate 5 facing the end fastener 4. When the end cover plate 5 and the end fastener 4 engage with each other, the vertical rib 9 inserts into the inner side of the ring of the end fastener 4, limiting the end fastener 4 from the inner side of the ring. At the same time, the end cover plate 5 seals against the outer side of the end fastener 4, sealing the end fastener 4. Preferably, a sealing ring is provided on the portion of the end cover plate 5 that engages with the end fastener 4.

[0033] A number of cover plate countersunk holes 8 are provided on the outer surface of the end cover plate 5, and corresponding bolts are installed in the cover plate countersunk holes 8. After the bolts pass through the end cover plate 5, the end cover plate 5 is firmly fixed to the outer surface of the end fastener 4, so that the end fastener 4 and the end cover plate 5 are fixedly connected.

[0034] A filler plate is provided along the length of the liner unit 2. The filler plate can be made of higher hardness steel to improve the overall stability of the liner unit 2. For specific applications, the filler plate can also be made of strong magnetic materials to meet the performance requirements of the liner.

[0035] During implementation, a liner assembly 3, formed by a plurality of liner units 2, is disposed within a sleeve 1. The liner units 2 are arranged along the length of the sleeve 1, resting against the inner wall of the sleeve 1 to form a circle. Adjacent liner units 2 engage with each other along the length of the sleeve 1, forming a ring-shaped liner assembly 3.

[0036] End fasteners 4 are provided at the corresponding ends of the liner assembly 3. These annular fasteners 4 rest against the outer sides of the corresponding ends of the liner assembly 3. A fastening step 7 is provided on the ends of the liner assembly 3, sealing the ends from the front and providing a position-limiting fit from the inside. The end fasteners 4 fasten the ends of the liner assembly 3 to the inner wall of the sleeve 1.

[0037] A plurality of mounting countersunk holes 6 are provided on the inner side of the ring of the end fastener 4 , and corresponding bolts are installed in the mounting countersunk holes 6 . After the bolts pass through the end fastener 4 , the end fastener 4 is firmly fixed to the inner cavity wall of the sleeve 1 .

[0038] An annular end cap 5 is provided on the outside of the end fastener 4. A circular hole is provided in the center of the end cap 5. An annular vertical rib 9 is provided on the inner surface of the end cap 5 facing the end fastener 4. When the end cap 5 and the end fastener 4 are engaged, the vertical rib 9 inserts into the inner side of the end fastener 4 ring, securing the end fastener 4 from the inner side of the ring. Simultaneously, the end cap 5 seals against the outer side of the end fastener 4, sealing the end fastener 4.

[0039] The outer surface of the end cover plate 5 is provided with a plurality of cover plate counterbores 8, into which corresponding bolts are fitted. The bolts pass through the end cover plate 5 and securely fasten the end cover plate 5 to the outer surface of the end fastener 4, thereby securely connecting the end fastener 4 and the end cover plate 5. The cover plate counterbores 8 of the end cover plate 5 and the mounting counterbores 6 of the end fastener 4 are staggered so as not to interfere with each other.

[0040] The utility model uses the end fastener 4 to seal and limit the end of the liner monomer 2, and uses the end cover 5 to seal and limit the end fastener 4, especially to seal the bolt part on the end fastener 4, so that no assembly parts are directly exposed to the slurry, effectively protecting the various structural parts of the sleeve 1 from corrosion.

[0041] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not limiting. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A grinding mill liner assembly structure, characterized in that: The invention has a sleeve (1), and a liner assembly (3) formed by enclosing a plurality of liner monomers (2) is arranged inside the sleeve (1). The liner assembly (3) is an annular structure. The liner monomers (2) are arranged along the length direction of the sleeve (1). The liner monomers (2) are attached to the inner cavity wall of the sleeve (1) to form a circumference. Adjacent liner monomers (2) are engaged with each other along the length of the sleeve (1). End fasteners (4) are correspondingly provided at the ends of the liner assembly (3). The end fasteners (4) fasten the liner The end of the component (3) is fastened to the inner wall of the sleeve (1), and a plurality of mounting countersunk holes (6) are provided on the inner side of the ring of the end fastener (4). Bolts in the mounting countersunk holes (6) fix the end fastener (4) to the inner wall of the sleeve (1). An end cover plate (5) with an annular structure is provided on the outer side of the end fastener (4). The end cover plate (5) limits the end fastener (4) from the inner side of the ring of the end fastener (4), and the end fastener (4) and the end cover plate (5) are fixedly connected.

2. The grinding mill liner assembly structure according to claim 1, characterized in that: The mating surfaces of adjacent lining plate units (2) are provided with triangular wave grooves or wavy grooves for embedding.

3. The grinding mill liner assembly structure according to claim 1, characterized in that: The end fastening piece (4) adopts an annular structure and is abutted against the outer side of the corresponding end of the lining plate assembly (3).

4. The grinding mill liner assembly structure according to claim 1, characterized in that: An annular fastening step (7) is provided on the outer periphery of the surface of the end fastening member (4) facing the lining assembly (3); the fastening step (7) is located on the end of the lining assembly (3), closes the end of the lining assembly (3) from the front, and forms a limited fit from the inside of the lining assembly (3).

5. The grinding mill liner assembly structure according to claim 4, characterized in that: A sealing ring is provided at a portion of the buckling step (7) that cooperates with the lining plate assembly (3).

6. The grinding mill liner assembly structure according to claim 1, characterized in that: An annular vertical rib (9) is provided on the inner surface of the end cover plate (5) facing the end fastener (4). The vertical rib (9) is inserted into the inner side of the ring of the end fastener (4) to limit the end fastener (4) from the inner side of the ring of the end fastener (4). At the same time, the end cover plate (5) is sealed on the outer side of the end fastener (4).

7. The grinding mill liner assembly structure according to claim 6, characterized in that: A sealing ring is provided on the end cover plate (5) at a location that cooperates with the end fastening piece (4).

8. The grinding mill liner assembly structure according to claim 1, characterized in that: A plurality of cover plate countersunk holes (8) are provided on the outer surface of the end cover plate (5), and bolts in the cover plate countersunk holes (8) firmly fix the end cover plate (5) on the outer surface of the end fastening member (4).

9. The grinding mill liner assembly structure according to claim 1, characterized in that: A filling material plate is provided inside the lining plate unit (2) along the length direction.

10. The grinding mill liner assembly structure according to claim 1, characterized in that: A circular passage opening is provided in the center of the end cover plate (5).

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