Anti-cracking model for lining plate of ball mill

Abstract

The utility model discloses a ball mill lining plate anti-cracking model which comprises lining plates and tie bars, the lining plates are arranged in an up-down staggered mode, and a corner is formed at the middle staggered position of the lining plates. And hollow parts are formed by the tie bars and the corners. According to the utility model, the arc-shaped lacing wire is arranged at the first round corner, the lacing wire is removed through cutting and polishing after a casting is demoulded and subjected to heat treatment, and the lacing wire which forms a hollow part with the first round corner is arranged, so that the first round corner can be prevented from cracking in the heat treatment process of production and demoulding; and meanwhile, when the lacing wire is taken out after heat treatment, the polishing amount during casting contact can be reduced, and the situation that the casting generates polishing cracks due to large heat generated by long-time polishing is avoided.

Description

Technical Field

[0001] The utility model relates to the field of ball mill liner crack prevention, in particular to a ball mill liner crack prevention model. Background Art

[0002] Large ball mill liners have a large area of ​​each liner. During the casting process, the casting will form a large stress when it changes from liquid to solid. During heat treatment, it needs to be quickly cooled from high temperature to the bottom temperature to achieve the required performance. However, in this process, greater stress will appear at the corners of the liner, causing cracks at the corners, making the casting scrapped and causing great losses. Utility Model Content

[0003] One purpose of the present utility model is to provide a ball mill liner anti-cracking model that can solve at least any aspect of the above-mentioned technical problems.

[0004] A further object of the present invention is to avoid stress at the corners of the lining plate.

[0005] Another further object of the present invention is to improve the quality of castings and prevent cracking of castings.

[0006] In particular, the utility model provides a ball mill liner anti-cracking model, including a liner and a tie bar, wherein the liner is staggered up and down, and the middle staggered part of the liner forms a corner; the tie bar and the corner form a hollow part.

[0007] Furthermore, the corner includes a first rounded corner and a second rounded corner, the first rounded corner is arranged toward the inside of the lining plate, and the radius of the first rounded corner is 20 cm-30 cm.

[0008] Furthermore, the reinforcement has a curvature.

[0009] Furthermore, the radius of the second rounded corner is 10 cm-25 cm.

[0010] Furthermore, the radius of the first rounded corner is 25 cm.

[0011] Furthermore, the radius of the second rounded corner is 15 cm.

[0012] The technical effects and advantages of this utility model are:

[0013] The utility model provides arc-shaped tie bars at the first fillet, and after the casting is demolded and heat treated, the tie bars are removed by cutting and grinding. By providing tie bars that are hollowed out with the first fillet, it can be ensured that the first fillet will not crack during production and demolding and heat treatment. At the same time, when the tie bars are taken out after heat treatment, the amount of grinding when the casting is in contact can be reduced, avoiding excessive grinding for too long to generate large heat and cause grinding cracks in the casting. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings:

[0015] Figure 1 This is a schematic diagram of the structure of the utility model.

[0016] Figure 2 for Figure 1 Schematic diagram of the locally enlarged structure of C in the middle.

[0017] Figure 3 for Figure 1 Schematic diagram of the cross-sectional structure in the BB direction.

[0018] In the figure: 1. lining plate, 101. corner, 1011. first rounded corner, 1012. second rounded corner, 2. tie rod, 3. fixing hole, 4. hanging ear. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] Example

[0021] The solution of this embodiment provides a ball mill liner anti-cracking model, including a liner 1 and a reinforcement 2, wherein the liner 1 is staggered and arranged as a whole. Figure 1 As shown in the figure, the middle part of the lining plate 1 is staggered to form a corner 101; the tie rod 2 and the corner 101 form a hollow portion, forming a hollow portion and an arc-shaped tie rod to increase the tension and reduce the contact points between the tie rod and the lining plate, avoiding too many contact points and affecting the subsequent removal and grinding; the Figure 1This is a model of the liner 1 after demoulding. During the casting process, the corner 101 and the liner 1 are an integrated structure. After the entire liner 1 is heat-treated and cooled, the ribs 2 are removed and the removed portion is polished to prevent the liner 1 from cracking.

[0022] It needs to be further explained that, Figure 2 As shown in , the corner 101 includes a first rounded corner 1011 and a second rounded corner 1012. The first rounded corner 1011 is arranged toward the inside of the lining plate 1, and the radius of the first rounded corner 1011 is 20cm-30cm. The radius of the first rounded corner 1011 is 25cm.

[0023] like Figure 3 As shown in the figure, the upper surface of the lining plate 1 is provided with protrusions of different heights, the middle part of the lining plate 1 is provided with a hanging ear 4, through which the lining plate 1 is moved and installed, and the fixing holes 3 are symmetrically arranged on the left and right, through which the lining plate 1 is fixed.

[0024] It should be further explained that the tie rod 2 has an arc, and the arc of the tie rod 2 is 80°.

[0025] It should be further explained that the radius of the second rounded corner 1012 is 10 cm-25 cm, and the radius of the second rounded corner 1012 is 15 cm. When the lining plate 1 is installed, different lining plates 1 can be assembled together.

[0026] Working principle of this utility model:

[0027] During use, an arc-shaped tie rod 2 is provided at the first fillet 1011. After the casting is demolded and heat treated, the tie rod 2 is removed by cutting and grinding. By providing a tie rod 2 that is hollowed out with the first fillet 1011, it can be ensured that the first fillet 1011 will not crack during production and demolding and heat treatment. At the same time, when the tie rod 2 is taken out after heat treatment, the amount of grinding when the casting is in contact can be reduced, avoiding excessive grinding to generate large heat and cause grinding cracks in the casting.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A ball mill liner anti-cracking model, characterized in that: include, Lining plates (1), the lining plates (1) are staggered up and down, and the staggered middle portions of the lining plates (1) form a corner (101); A tie rod (2), wherein the tie rod (2) and the corner (101) form a hollow portion.

2. A ball mill liner anti-cracking model according to claim 1, characterized in that: The corner (101) comprises a first rounded corner (1011) and a second rounded corner (1012), wherein the first rounded corner (1011) is arranged toward the interior of the lining plate (1), and the radius of the first rounded corner (1011) is 20 cm-30 cm.

3. The ball mill liner anti-cracking model according to claim 1, characterized in that: The tie rod (2) has a curvature.

4. A ball mill liner anti-cracking model according to claim 2, characterized in that: The radius of the second rounded corner (1012) is 10cm-25cm.

5. The ball mill liner anti-cracking model according to claim 2, characterized in that: The radius of the first rounded corner (1011) is 25 cm.

6. A ball mill liner anti-cracking model according to claim 4, characterized in that: The radius of the second rounded corner (1012) is 15 cm.

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