Small corrugated lining plate for two bins of ball mill

Abstract

The utility model provides a two-bin small corrugated lining plate of a ball mill, which belongs to the technical field of ball mills and comprises a plurality of groups of lining plate components axially arranged along a barrel of the ball mill. The lining plate assembly comprises a plurality of corrugated lining plates, a first wave crest and a second wave crest are arranged at the two ends, in the rotating direction of the ball mill barrel, of each corrugated lining plate respectively, the second wave crest extends backwards and is connected to the front side of the first wave crest of the other corrugated lining plate in a pressed mode, and the second wave crest is higher than the first wave crest. According to the small corrugated lining plate for the two bins of the ball mill, the second wave crest is crimped on the front side of the first wave crest of the other corrugated lining plate, and a height difference is formed between the second wave crest and the first wave crest; the impact force of materials is increased, sliding friction between the materials and the corrugated lining plate is reduced by lifting and then falling the materials, the abrasion degree of the corrugated lining plate in use is reduced, the service life of the corrugated lining plate is prolonged, and the working efficiency of the corrugated lining plate is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ball mills, and more specifically, relates to a small corrugated liner for the second bin of a ball mill. Background Art

[0002] The liner of a ball mill is used to protect the cylinder body of the ball mill, so that the cylinder body is not directly impacted and rubbed by grinding media and materials. At the same time, different forms of liners can be used to adjust the motion state of the grinding media, so as to enhance the crushing effect of the grinding media on the materials, help improve the grinding efficiency of the mill, increase the output, and reduce the metal consumption. When the existing liner in the ball mill is working, the liner will be repeatedly collided by the grinding media and materials, making the liner very easy to loosen or even damaged. Frequent replacement of the liner during the production process greatly affects the production efficiency, and if it is not discovered in time, it will also cause damage to the cylinder body of the ball mill. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a small corrugated liner for the second bin of a ball mill, aiming to solve the problem that the liner is easy to be damaged when the ball mill is working.

[0004] To achieve the above purpose, the technical solution adopted by the utility model is: to provide a small corrugated liner for the second bin of a ball mill, including a plurality of annular liner assemblies arranged along the axial direction of the cylinder body of the ball mill; each liner assembly includes a plurality of corrugated liners connected end to end, and both ends of each corrugated liner along the rotation direction of the cylinder body of the ball mill are respectively provided with a first wave crest and a second wave crest, the second wave crest extends backward and is pressed against the front side of the first wave crest of another corrugated liner, and the second wave crest is higher than the first wave crest.

[0005] As another embodiment of the present application, the corrugated liner includes a liner body and an installation cushion layer. A bolt hole is opened in the middle of the liner body, and the liner body is fixed on the cylinder body of the ball mill by means of a double-headed bolt; the installation cushion layer is located outside the liner body, and the installation cushion layer abuts against the cylinder body of the ball mill by means of the liner body.

[0006] As another embodiment of the present application, a fixing convex block is threadedly connected to the end of the double-headed bolt; an annular abutting surface is opened on the working surface of the liner body, and the abutting surface is located in the circumferential direction of the bolt hole; the end surface of the fixing convex block is attached to the abutting surface.

[0007] As another embodiment of the present application, the fixing convex block is hemispherical.

[0008] As another embodiment of the present application, a clamping groove and a clamping protrusion are respectively provided at the front and rear ends of the liner body, and the clamping protrusion is used for clamping in the clamping groove of the previous liner body.

[0009] As another embodiment of the present application, both the clamping protrusion and the clamping groove are provided at the bottom end of the lining plate.

[0010] As another embodiment of the present application, the lining plate body includes a first lining plate and a second lining plate, and the first lining plate and the second lining plate are alternately connected; the heights of both ends of the first lining plate along the axial direction are greater than the height of the middle part thereof.

[0011] As another embodiment of the present application, the height of the first lining plate gradually increases from the middle part to both sides, or the first lining plate includes a horizontal part and thickened parts at both ends, the thickened parts are higher than the horizontal part, and the thickened parts have parallel working surfaces parallel to the surface of the horizontal part and inclined working surfaces for connecting the parallel working surfaces and the horizontal part.

[0012] As another embodiment of the present application, when there are multiple lining plate assemblies along the axial direction of the ball mill cylinder body, two adjacent lining plate assemblies are arranged at an angle, and the included angle between two adjacent lining plate assemblies is 15°-60°.

[0013] The beneficial effects of the small corrugated lining plate for the second bin of the ball mill provided by the present utility model are as follows: compared with the prior art, for the small corrugated lining plate for the second bin of the ball mill of the present utility model, the second wave crest presses against the front side of the first wave crest of another corrugated lining plate, and a height difference is formed between the two; during the ball milling process of the ball mill, the material moves from the first end of the previous corrugated lining plate to the second end, the height gradually increases and then drops from the second wave crest of the previous corrugated lining plate to the front side of the first wave crest of the subsequent corrugated lining plate, increasing the impact force of the material. By raising and then dropping the material, the sliding friction between the material and the corrugated lining plate is reduced, the wear degree of the corrugated lining plate during use is reduced, and thus the service life of the corrugated lining plate is prolonged and the working efficiency of the corrugated lining plate is improved. Description of the Drawings

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0015] Figure 1 It is a schematic structural diagram of the small corrugated lining plate for the second bin of the ball mill provided by the first embodiment of the present utility model;

[0016] Figure 2 It is a schematic structural diagram of the small corrugated lining plate for the second bin of the ball mill provided by the second embodiment of the present utility model;

[0017] Figure 3The transverse sectional view of the first block provided by the third embodiment of the present utility model;

[0018] Figure 4 The transverse sectional view of the first block provided by the fourth embodiment of the present utility model;

[0019] Figure 5 The transverse sectional view of the first block provided by the fifth embodiment of the present utility model.

[0020] In the figure: 1, installation cushion layer; 2, first lining plate; 3, second lining plate; 4, double-headed bolt; 5, fixing bump; 6, bolt hole; 7, first wave crest; 8, first buffer wave crest; 9, second buffer wave crest; 10, second wave crest; 11, clamping projection. Specific embodiments

[0021] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0022] Please refer to Figure 1 and Figure 2 , and now the small corrugated lining plate for the second bin of the ball mill provided by the present utility model will be described. The small corrugated lining plate for the second bin of the ball mill includes a plurality of groups of lining plate assemblies arranged along the axial direction of the ball mill cylinder; each lining plate assembly includes a plurality of corrugated lining plates. The two ends of the corrugated lining plate along the rotation direction of the ball mill cylinder are respectively provided with a first wave crest 7 and a second wave crest 10. The second wave crest 10 extends backward and is pressed against the front side of the first wave crest 7 of another corrugated lining plate, and the second wave crest 10 is higher than the first wave crest 7.

[0023] The small corrugated lining plate for the second bin of the ball mill provided by the present utility model, compared with the prior art, a plurality of corrugated lining plates are connected end to end to enclose an annular lining plate assembly; the corrugated lining plate has a first end and a second end in the circumferential direction of the ball mill cylinder, wherein the first end has a first wave crest 7 and the second end has a second wave crest 10; the second wave crest 10 is pressed against the front side of the first wave crest 7 of another corrugated lining plate, and a height difference is formed between the two; during the ball milling process of the ball mill, the material moves from the first end of the previous corrugated lining plate to the second end, the height gradually increases and then drops from the second wave crest 10 of the previous corrugated lining plate to the front side of the first wave crest 7 of the next corrugated lining plate, increasing the impact force of the material. By raising and then dropping the material, the sliding friction between the material and the corrugated lining plate is reduced, the wear degree of the corrugated lining plate during use is reduced, and thus the service life of the corrugated lining plate is prolonged and the working efficiency of the corrugated lining plate is improved.

[0024] In some possible embodiments, please refer to Figures 1 to 2, the corrugated liner includes a liner body and an installation cushion layer 1. A bolt hole 6 is provided in the middle of the liner body, and the liner body is fixed on the ball mill cylinder by means of a double-headed bolt 4; the installation cushion layer 1 is located outside the liner body, and the installation cushion layer 1 abuts against the ball mill cylinder by means of the liner body.

[0025] The outer side of the liner body fits the installation cushion layer 1. A bolt hole 6 is provided in the liner body along the thickness direction. The liner body is fixedly connected to the cylinder of the ball mill by means of bolts. An installation cushion layer 1 is arranged between the liner body and the cylinder. The installation cushion layer 1 can be made of silica gel or the like and is used to play a role in buffering and shock absorption. Through holes are provided in the installation cushion layer 1, and bolts penetrate through the through holes and connect the cylinder and the liner body.

[0026] A fixing convex block 5 is threadedly connected to the end of the double-headed bolt 4; an annular abutting surface is provided on the working surface of the liner body, and the abutting surface is located in the circumferential direction of the bolt hole 6; the end face of the fixing convex block 5 fits on the abutting surface.

[0027] The double-headed bolt 4 penetrates through the bolt hole 6. One end of it extends out of the outside of the cylinder and is fixed by means of a height nut, and the other end extends out of the liner body and is connected by means of the fixing convex block 5. The fixing convex block 5 is installed on the outside of the liner body. The fixing convex block 5 is tightened at the end of the double-headed bolt 4, and the end face of the fixing convex block 5 fits on the annular abutting surface, and the abutting surface is lower than the upper end face of the liner body. Or a bolt gasket is arranged between the abutting surface and the fixing convex block 5, and the bolt gasket is a metal gasket or a silica gel gasket.

[0028] The fixing convex block 5 is hemispherical. The upper end of the fixing convex block 5 protrudes from the upper end face of the liner body. The installation of the fixing convex block 5 makes this part higher than the upper end face of the liner body, thereby increasing the rolling friction of the material on the liner body.

[0029] The bolt hole 6 is located on the midline of the first end and the second end of the liner body, and multiple liner bodies can be arranged at intervals along the axial direction of the cylinder. When multiple bolt holes 6 are provided on the liner body, the multiple bolt holes 6 are arranged at equal intervals.

[0030] Optionally, an expansion sleeve with internal threads can be provided in the threaded hole, and the bolt extends into the threaded hole and is in threaded cooperation with the expansion sleeve.

[0031] In some possible embodiments, please refer to Figures 1 to 2 , there are four wave crests on the upper end face of the liner body. Except for the first wave crest 7 and the second wave crest 10 at both ends, the upper end face of the liner body also has a first buffer wave crest 8 and a second buffer wave crest 9; and the first buffer wave crest 8 and the second buffer wave crest 9 are located between the first wave crest 7 and the second wave crest 10. The position where the bolt hole 6 is opened is in the wave trough between the first buffer wave crest 8 and the second buffer wave crest 9.

[0032] Specifically, the heights of the four wave peaks are arranged from high to low as the second wave peak 10, the first wave peak 7, the second buffer wave peak 9, and the first buffer wave peak 8. Since the heights of the second buffer wave peak 9 and the first buffer wave peak 8 are lower than those of the first wave peak 7 and the second wave peak 10, a concave area is formed in the middle of the corrugated liner, and the fixing bump 5 is located in the middle of this concave area.

[0033] The heights of the first buffer wave peak 8 and the second buffer wave peak 9 in the concave area are relatively low, so that the material can be buffered when it falls into the concave area after passing through the first wave peak 7. When being buffered, the material successively passes through the first buffer wave peak 8 and the second buffer wave peak 9 with a small amplitude of undulation, and then rises to the highest point of the second wave peak 10 after being buffered by the second buffer wave peak 9, and then falls from the highest point to the front side of the first wave peak 7.

[0034] In some possible embodiments, please refer to Figures 1 to 2 , a clamping groove and a clamping protrusion 11 are respectively provided at the front and rear ends of the liner body. The clamping protrusion 11 is used to be clamped in the clamping groove of the previous liner body. Both the clamping protrusion 11 and the clamping groove are provided at the bottom end of the liner.

[0035] A clamping groove and a clamping protrusion 11 are respectively arranged at the front and rear ends of the liner body along its rotation direction. The clamping groove is opened on the side of the liner body close to the cylinder. The tail end of the second wave peak 10 is above the clamping groove. That is, the clamping protrusion 11 provided at the first end of the latter liner body extends into the clamping groove opened at the second end of the previous liner body.

[0036] Optionally, the cross-section of the clamping groove is rectangular or trapezoidal. One side of the clamping groove can extend to the end face of the liner body close to the cylinder, and the clamping groove forms a notch structure. After the previous liner body is installed, the cooperation between the liner body and the cylinder makes this notch structure form a groove body with an opening facing backward.

[0037] In some possible embodiments, please refer to Figures 2 to 5 , the liner body includes a first liner 2 and a second liner 3, and the first liner 2 and the second liner 3 are alternately connected; the heights of both ends of the first liner 2 along the axial direction are greater than the height of its middle part.

[0038] The first liner 2 gradually increases in height from the middle to both ends along the axial direction of the cylinder. While the material rotates with the cylinder, when passing through the first liner 2, the material is affected by the inclined surfaces at both ends of the first liner 2, and the material gathers towards the middle direction, increasing the movement and collision of the material along the axial direction. When passing through the second liner 3, after the material no longer receives the force of gathering towards the middle part, the material diffuses along the axial direction and then enters the first liner 2 again after diffusion. During the rotation process of the material, the above-mentioned movement and collision are continuously repeated, improving the collision frequency of the material and the ball milling efficiency of the material.

[0039] The height of the first lining plate 2 gradually increases from the middle to both sides, or the first lining plate 2 includes a horizontal part and thickened parts at both ends. The thickened parts are higher than the horizontal part, and the thickened parts have parallel working surfaces parallel to the surface of the horizontal part and inclined working surfaces for connecting the parallel working surfaces and the horizontal part.

[0040] When the upper end surface of the first lining plate 2 is an inclined surface, as Figure 3 shown, the height of the upper end surface of the first lining plate 2 is the lowest at the middle position and gradually increases from the middle position to both sides, and the upper end surface is a smooth inclined surface.

[0041] When the upper end surface of the first lining plate 2 includes a horizontal part and thickened parts at both ends, as Figure 4 shown. In the axial direction of the cylinder body of the first lining plate 2, a horizontal part is left in the middle, and there is no inclination in this horizontal part. Thickened parts are only provided at both ends, and part of the material acts through the thickened parts at both ends. The parallel working surfaces of the thickened parts and the end faces of the horizontal part are connected by inclined working surfaces.

[0042] As Figure 5 shown, the thickened parts on both sides can be set in a stepped shape. The end faces of the two layers of steps are connected by an inclined surface.

[0043] In some possible embodiments, when there are multiple lining plate assemblies in the axial direction of the ball mill cylinder body, two adjacent lining plate assemblies are arranged at an angle, and the included angle between two adjacent lining plate assemblies is 15° - 60°.

[0044] When there are multiple lining plate assemblies in the axial direction of the ball mill cylinder body, there is an included angle between two adjacent lining plate assemblies. The lining plate assembly includes a first lining plate 2 and a second lining plate 3, and the end of the first lining plate 2 along the axis is correspondingly connected to the second lining plate 3.

[0045] Optionally, the lining plate assembly includes six lining plates connected end to end. The six lining plates include three first lining plates 2 and three second lining plates 3. The included angle between the first lining plate 2 and the second lining plate 3 is 30°. Therefore, in this embodiment, the rotation included angle between two adjacent groups of lining plate assemblies is 30°, so that the first lining plate 2 of the first lining plate assembly is connected to the second lining plate 3 of the second lining plate assembly.

[0046] The angled arrangement of the lining plate assembly can improve the mixing degree of the material and increase the rolling friction effect of the material.

[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. The small corrugated lining plate of the second bin of the ball mill is characterized by: The invention comprises a plurality of annular liner assemblies arranged along the axial direction of the ball mill cylinder; the liner assembly comprises a plurality of corrugated liner plates connected end to end, the corrugated liner plates are respectively provided with a first wave crest (7) and a second wave crest (10) at both ends along the rotation direction of the ball mill cylinder, the second wave crest (10) extends backwards and is pressed against the front side of the first wave crest (7) of another corrugated liner plate, and the second wave crest (10) is higher than the first wave crest (7).

2. The small corrugated lining plate for the second bin of the ball mill according to claim 1, characterized in that: The corrugated lining comprises a lining body and a mounting cushion layer (1); a bolt hole (6) is provided in the middle of the lining body, and the lining body is fixed to the ball mill cylinder by means of stud bolts (4); the mounting cushion layer (1) is located on the outside of the lining body, and the mounting cushion layer (1) is abutted against the ball mill cylinder by means of the lining body.

3. The small corrugated lining plate for the second bin of the ball mill according to claim 2, characterized in that: The end of the stud bolt (4) is threadedly connected with a fixing protrusion (5); an annular abutment surface is provided on the working surface of the liner body, and the abutment surface is located in the circumferential direction of the bolt hole (6); the end face of the fixing protrusion (5) is in contact with the abutment surface.

4. The small corrugated lining plate for the second bin of a ball mill as claimed in claim 3, characterized in that: The fixing protrusion (5) is hemispherical.

5. The small corrugated lining plate for the second bin of a ball mill as claimed in claim 2, characterized in that: The front and rear ends of the lining body are respectively provided with a clamping groove and a clamping protrusion (11), and the clamping protrusion (11) is used to be clamped in the clamping groove of the previous lining body.

6. The small corrugated lining plate for the second bin of a ball mill as claimed in claim 5, characterized in that: The clamping protrusion (11) and the clamping groove are both arranged at the bottom end of the lining plate.

7. The small corrugated lining plate for the second bin of a ball mill as claimed in claim 2, characterized in that: The lining plate body comprises a first lining plate (2) and a second lining plate (3), wherein the first lining plate (2) and the second lining plate (3) are alternately connected; the height of the first lining plate (2) at both ends along the axial direction is greater than the height of the middle part.

8. The small corrugated lining plate for the second bin of a ball mill as claimed in claim 7, characterized in that: The height of the first lining plate (2) gradually increases from the middle to both sides, or the first lining plate (2) includes a horizontal portion and thickened portions at both ends, the thickened portion is higher than the horizontal portion, and the thickened portion has a parallel working surface parallel to the surface of the horizontal portion and an inclined working surface for connecting the parallel working surface and the horizontal portion.

9. The small corrugated lining plate for the second bin of a ball mill according to claim 7, characterized in that: When there are a plurality of liner assemblies along the axial direction of the ball mill barrel, two adjacent liner assemblies are arranged at an angle, and the angle between the two adjacent liner assemblies is 15°-60°.

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