Stepped lining plate for ball mill and ball mill

Abstract

The utility model provides a step lining plate for a ball mill and the ball mill, and belongs to the technical field of mill equipment, the step lining plate comprises a bottom plate, a lining plate body, a lap joint part and a shielding part, the bottom plate is arranged on the inner wall of a cylinder of the ball mill and is fixedly connected with the cylinder; a screw hole is formed in the bottom plate; the lining plate body is mounted on the bottom plate in a matched manner, and mounting holes are formed in the lining plate body; a concave surface, a convex surface and a concave surface are arranged at the upper end of the lining plate body; the lap joint part is fixedly arranged on one side of the upper end face of the lining plate body, the shielding part is fixedly arranged on the other side of the upper end face of the lining plate body, and the shielding part is arranged in the length direction of the lining plate body; the lower end face of the shielding part and the upper end face of the lap joint part are installed in a matched mode, and the shielding part is used for shielding a gap between every two adjacent lining plate bodies. According to the stepped lining plate for the ball mill, provided by the utility model, the ball mill has a better grinding effect on ground materials, a cylinder cannot be damaged, and the stable and efficient work of the ball mill is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of mill equipment, and more specifically relates to a stepped lining plate for a ball mill and a ball mill. Background Art

[0002] A ball mill is a machine used to grind or mix various materials. It is mainly composed of a rotating cylinder, grinding media and a transmission device. It is widely used in mining, cement, chemical, building materials, ceramics, metallurgy and other industrial fields. The working principle of a ball mill is to achieve the purpose of grinding or mixing through the mutual collision and friction between the grinding media (such as steel balls, ceramic balls, etc.) in the cylinder and the grinding materials. The transmission device is responsible for controlling the rotation speed and direction of the cylinder. Usually, a liner is arranged on the inner wall of the cylinder. The main function of the liner is to protect the cylinder of the ball mill and use the friction between the liner and the grinding body to bring the grinding body to crush and grind the material. At present, there is a gap between two adjacent liner plates, which causes the grinding media to enter the gap, and the liner plate has insufficient force on the grinding material, resulting in poor grinding effect of the ball mill; and multiple replacement of the liner plate can easily cause irreversible deformation of the cylinder, etc., resulting in damage to the mill. Utility Model Content

[0003] The utility model aims to provide a stepped liner for a ball mill and a ball mill, so as to solve the technical problems in the prior art that the liner installation gap leads to poor grinding effect of the ball mill and that multiple replacement and installation of the liner easily causes damage to the mill.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a stepped liner for a ball mill, comprising:

[0005] The bottom plate is used to be mounted on the inner wall of the cylinder of the ball mill and is fixedly connected to the cylinder; the bottom plate is provided with screw holes;

[0006] The lining plate body is mounted on the bottom plate, and the lining plate body is provided with mounting holes corresponding to the screw holes; the upper end of the lining plate body is provided with a concave surface, a convex surface and a concave surface arranged in a stepped manner along the width direction;

[0007] The overlap portion is fixedly arranged on one side of the upper end surface of the lining plate body and arranged along the length direction of the lining plate body;

[0008] The shielding portion is fixedly arranged on the other side of the upper end surface of the lining body and extends outward in a direction away from the lining body; the shielding portion is arranged along the length direction of the lining body; the lower end surface of the shielding portion is cooperated with the upper end surface of the overlapping portion to shield the gap between two adjacent lining bodies.

[0009] In a possible implementation, the convex surface includes a gently extending section and a wave crest section connected to the gently extending section, and the two concave surfaces are respectively connected to the gently extending section and the wave crest section; and the mounting hole is provided on the gently extending section.

[0010] In a possible implementation manner, the concave surface is tangentially connected to the gently extending section, the gently extending section is tangentially connected to the wave crest section, and the wave crest section is tangentially connected to the concave surface.

[0011] In a possible implementation, the shielding portion is higher than the adjacent recessed surface, and the recessed surfaces are tangentially connected; the upper end surface of the shielding portion is an upwardly convex arc surface; the overlapping portion is lower than the adjacent recessed surface, and is tangentially connected to the recessed surface.

[0012] In a possible implementation, a limiting installation groove is provided on the bottom plate, and a limiting protrusion which is mounted in cooperation with the limiting installation groove is provided at the lower end of the lining plate body.

[0013] In a possible implementation, a boss is provided on the bottom plate, a groove matched with the boss is provided at the lower end of the lining plate body, and the screw hole is provided on the boss.

[0014] In a possible implementation, the width of the bottom plate is smaller than the width of the lining plate body, and both sides of the lining plate body are located outside the bottom plate.

[0015] In a possible implementation, the bottom plate is provided with a plurality of connection holes, and the lower end surface of the lining plate body is provided with a plurality of avoidance grooves corresponding to the connection holes.

[0016] In a possible implementation, the lining plate body, the overlapping portion and the shielding portion are integrally formed.

[0017] The utility model provides a step liner for a ball mill with the following beneficial effects: compared with the prior art, the utility model provides a step liner for a ball mill, in which a plurality of bottom plates are pre-installed on the inner wall of the cylinder before the liner body is installed, and the bottom plates are fixedly connected to the cylinder; the plurality of bottom plates correspond to the plurality of liner bodies one by one, the liner bodies are butt-mounted on the bottom plates, and the mounting holes on the liner bodies are coaxially aligned with the screw holes on the bottom plates, and then fasteners are used to pass through the mounting holes and connect with bolts to realize the fixed connection between the liner bodies and the cylinder; and two adjacent liner bodies are connected by means of the shielding part and the overlapping part, so that the two liner bodies are fixedly connected. The gaps between the plate bodies are blocked to prevent the grinding medium from entering the gaps; and with the help of the recessed surface, convex surface and recessed surface arranged in sequence on the upper end surface of the liner body, the movement state of the grinding medium and the grinding material is changed, thereby enhancing the crushing effect of the grinding medium on the grinding material and improving the grinding effect of the ball mill; and when the liner body needs to be replaced, the liner body is removed from the bottom plate without affecting or damaging the cylinder, thereby ensuring the efficient operation of the ball mill; in this way, the ball mill has a better grinding effect on the grinding material and will not damage the cylinder, thereby ensuring the stable and efficient operation of the ball mill.

[0018] Another object of the present utility model is to provide a ball mill, comprising any one of the above-mentioned stepped lining plates for the ball mill.

[0019] The ball mill provided by the utility model adopts a stepped liner for the ball mill, so that the ball mill has a better grinding effect on the grinding material and will not damage the cylinder, thereby ensuring that the ball mill works stably and efficiently. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0021] Figure 1 A schematic diagram of the structure of a stepped liner for a ball mill provided in an embodiment of the utility model;

[0022] Figure 2 A schematic structural diagram of multiple base plates and liner bodies installed in a cylinder provided in an embodiment of the utility model.

[0023] Among them, the reference numerals in the figure are:

[0024] 1. Bottom plate; 11. Screw hole; 12. Position-limiting mounting groove; 13. Boss; 14. Connecting hole; 2. Lining plate body; 21. Mounting hole; 22. Recessed surface; 23. Protruding surface; 24. Gentle extension section; 25. Wave crest section; 26. Position-limiting protrusion; 27. Groove; 28. Avoidance groove; 3. Overlapping portion; 4. Shielding portion; 5. Cylinder. DETAILED DESCRIPTION

[0025] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0026] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0027] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0029] See also Figure 1 and Figure 2Now, the stepped liner for the ball mill provided by the utility model is described. A stepped liner for a ball mill comprises a bottom plate 1, a liner body 2, an overlap portion 3 and a shielding portion 4, wherein the bottom plate 1 is used to be mounted on the inner wall of a cylinder 5 of the ball mill and is fixedly connected to the cylinder 5; a screw hole 11 is provided on the bottom plate 1; the liner body 2 is mounted on the bottom plate 1, and a mounting hole 21 corresponding to the screw hole 11 is provided on the liner body 2; a recessed surface 22, a protruding surface 23 and a recessed surface 22 arranged in a stepped manner along the width direction are provided at the upper end of the liner body 2; the overlap portion 3 is fixedly arranged on one side of the upper end surface of the liner body 2 and is arranged along the length direction of the liner body 2; the shielding portion 4 is fixedly arranged on the other side of the upper end surface of the liner body 2 and extends outward in a direction away from the liner body 2; the shielding portion 4 is arranged along the length direction of the liner body 2; the lower end surface of the shielding portion 4 is mounted in cooperation with the upper end surface of the overlap portion 3 to shield the gap between two adjacent liner bodies 2.

[0030] Compared with the prior art, the step liner for ball mill provided by the utility model has the following characteristics: before installing the liner body 2, a plurality of bottom plates 1 are pre-installed on the inner wall of the cylinder 5, and the bottom plates 1 are fixedly connected to the cylinder 5; the plurality of bottom plates 1 correspond to the plurality of liner bodies 2 one by one, the liner bodies 2 are butt-mounted on the bottom plates 1, and the mounting holes 21 on the liner bodies 2 are coaxially aligned with the screw holes 11 on the bottom plates 1, and then fasteners are used to pass through the mounting holes 21 and connect with bolts to realize the fixed connection between the liner bodies 2 and the cylinder 5; and two adjacent liner bodies 2 are connected by means of the shielding portion 4 and the overlapping portion 3, so that the space between the two liner bodies 2 is not large enough. The gap is blocked to prevent the grinding medium from entering the gap; and with the help of the recessed surface 22, the convex surface 23 and the recessed surface 22 arranged in sequence on the upper end surface of the liner body 2, the movement state of the grinding medium and the grinding material is changed, the grinding effect of the grinding medium on the grinding material is enhanced, and the grinding effect of the ball mill is improved; and when the liner body 2 needs to be replaced, the liner body 2 is removed from the bottom plate 1, which will not affect or damage the cylinder 5, ensuring the efficient operation of the ball mill; in this way, the ball mill has a better grinding effect on the grinding material, and will not damage the cylinder 5, ensuring the stable and efficient operation of the ball mill.

[0031] The bottom plate 1 is fixed to the cylinder 5 by bolts, and the liner body 2 is fixed to the bottom plate 1 by bolts. The mounting hole 21 is set as a countersunk hole.

[0032] See also Figure 1 and Figure 2As a specific embodiment of the stepped liner for a ball mill provided by the utility model, the convex surface 23 includes a gentle extension section 24 and a wave crest section 25 connected to the gentle extension section 24, and the two concave surfaces 22 are respectively connected to the gentle extension section 24 and the wave crest section 25; the mounting hole 21 is opened on the gentle extension section 24; with the help of the gentle extension section 24 and the concave surface 22, a good connection and transition is formed, thereby improving the movement speed of the grinding medium and the grinding material; at the same time, the wave crest section 25 is set, so that the movement state of the grinding material and the grinding medium changes dramatically, so that the grinding effect of the grinding material is more uniform and faster. The gentle extension section 24 is set at the center of the liner body 2, and the mounting hole 21 is opened on the gentle extension section 24.

[0033] See also Figure 1 and Figure 2 As a specific embodiment of the stepped liner for a ball mill provided by the utility model, the recessed surface 22 is tangentially connected to the flat extension section 24, the flat extension section 24 is tangentially connected to the wave crest section 25, and the wave crest section 25 is tangentially connected to the recessed surface 22; that is, the recessed surface 22, the flat extension section 24, the wave crest section 25, and the recessed surface 22 are all tangentially connected, so that the upper end surface of the liner body 2 is smoother; in this way, the grinding material is more in contact with the grinding medium to produce a grinding effect, without causing strong impact damage to the liner body 2.

[0034] See also Figure 1 and Figure 2 As a specific embodiment of the step liner for a ball mill provided by the utility model, the shielding portion 4 is higher than the adjacent concave surface 22, and the concave surface 22 is tangentially connected; the upper end surface of the shielding portion 4 is an upwardly convex arc surface; the overlapping portion 3 is lower than the adjacent concave surface 22, and is tangentially connected to the concave surface 22; by setting the shielding portion 4 higher than the concave surface 22, and the overlapping portion 3 lower than the concave surface 22, the shielding portion 4 and the overlapping portion 3 are installed to form a step-like structure, so that the two adjacent liner bodies 2 also have the function of changing the movement direction of the grinding material and the grinding medium. At the same time, the upper end surface of the shielding portion 4 is set to be an arc surface, so that the connection between the two adjacent liner bodies 2 is smooth.

[0035] See also Figure 1 As a specific embodiment of the stepped liner for a ball mill provided by the utility model, a limiting installation groove 12 is provided on the bottom plate 1, and a limiting protrusion 26 which is installed in cooperation with the limiting installation groove 12 is provided at the lower end of the liner body 2; both sides of the liner body 2 are located on the outside of the bottom plate 1; therefore, when the liner body 2 is installed on the bottom plate 1, the installation of the liner body 2 is more stable and accurate by means of the matching installation of the limiting protrusion 26 and the limiting installation groove 12.

[0036] See also Figure 1As a specific embodiment of the step liner for a ball mill provided by the utility model, a boss 13 is provided on the bottom plate 1, a groove 27 matching the boss 13 is provided at the lower end of the liner body 2, and a screw hole 11 is provided on the boss 13; the bottom plate 1 is provided with a boss 13, and the lower end of the liner body 2 is provided with a groove 27, the liner body 2 is installed on the bottom plate 1, the groove 27 is installed together with the boss 13, and the connection between the liner body 2 and the bottom plate 1 is more secure by means of the boss 13; at the same time, the length of the screw hole 11 is made longer by the boss 13, so that the mass of the bottom plate 1 is reduced. The boss 13 is provided to be integrally formed with the bottom plate 1.

[0037] See also Figure 1 and Figure 2 As a specific implementation of the stepped liner for a ball mill provided by the utility model, the width of the bottom plate 1 is smaller than the width of the liner body 2, and both sides of the liner body 2 are located on the outside of the bottom plate 1; in this way, the bottom plate 1 is completely located below the liner body 2, and when two adjacent liner bodies 2 are installed in coordination, there will be no mutual interference between the two bottom plates 1.

[0038] See also Figure 1 As a specific embodiment of the step liner for a ball mill provided by the utility model, the bottom plate 1 is provided with a plurality of connection holes 14, and the lower end surface of the liner body 2 is provided with a plurality of avoidance grooves 28 corresponding to the connection holes 14; the cylinder 5 is provided with through holes, and when the bottom plate 1 is installed on the inner wall of the cylinder 5, the connection holes 14 on the bottom plate 1 are aligned with the through holes, and then bolts are passed through the connection holes 14 and the through holes, and nuts are used to lock and fix. An avoidance groove 28 is provided on the lower end surface of the liner body 2, so that the head of the bolt is located in the avoidance groove 28. At the same time, the weight of the liner body 2 is also reduced by means of the avoidance groove 28.

[0039] See also Figure 1 and Figure 2 As a specific implementation of the stepped liner for the ball mill provided by the utility model, the liner body 2, the overlapping portion 3 and the shielding portion 4 are integrally formed; the connection strength between the liner body 2, the overlapping portion 3 and the shielding portion 4 is improved, and the connection between the shielding portion 4 and the overlapping portion 3 is made more reliable and stable.

[0040] See also Figure 1 and Figure 2 The embodiment of the utility model further provides a ball mill, which includes any one of the above-mentioned stepped lining plates for the ball mill.

[0041] The ball mill provided by the utility model adopts the above-mentioned stepped liner for the ball mill, so that the ball mill has a better grinding effect on the grinding material and will not cause damage to the cylinder 5, thereby ensuring that the ball mill works stably and efficiently.

[0042] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A step liner for a ball mill, characterized in that: include: The bottom plate is used to be mounted on the inner wall of the cylinder of the ball mill and is fixedly connected to the cylinder; the bottom plate is provided with screw holes; The lining plate body is mounted on the bottom plate, and the lining plate body is provided with mounting holes corresponding to the screw holes; the upper end of the lining plate body is provided with a concave surface, a convex surface and a concave surface arranged in a stepped manner along the width direction; The overlap portion is fixedly arranged on one side of the upper end surface of the lining plate body and arranged along the length direction of the lining plate body; The shielding portion is fixedly arranged on the other side of the upper end surface of the lining plate body and extends outward in a direction away from the lining plate body; the shielding portion is arranged along the length direction of the lining plate body; the lower end surface of the shielding portion is matched and installed with the upper end surface of the overlapping portion to shield the gap between two adjacent lining plate bodies; The bottom plate is provided with a boss, the lower end of the lining plate body is provided with a groove matched with the boss, and the screw hole is provided on the boss; The bottom plate is provided with a plurality of connection holes, and the lower end surface of the lining plate body is provided with a plurality of avoidance grooves corresponding to the connection holes.

2. The step liner for a ball mill according to claim 1, characterized in that: The convex surface includes a gently extending section and a wave crest section connected to the gently extending section, and the two concave surfaces are respectively connected to the gently extending section and the wave crest section; the mounting hole is provided on the gently extending section.

3. The step liner for a ball mill according to claim 2, characterized in that: The concave surface is tangentially connected to the gently extending section, the gently extending section is tangentially connected to the wave crest section, and the wave crest section is tangentially connected to the concave surface.

4. The step liner for a ball mill according to claim 2, characterized in that: The shielding portion is higher than the adjacent recessed surface, and the recessed surfaces are tangentially connected; the upper end surface of the shielding portion is an upwardly convex arc surface; the overlapping portion is lower than the adjacent recessed surface, and is tangentially connected to the recessed surface.

5. The step liner for a ball mill according to claim 1, characterized in that: The bottom plate is provided with a limit installation groove, and the lower end of the lining plate body is provided with a limit protrusion which is installed in cooperation with the limit installation groove.

6. The step liner for a ball mill according to claim 5, characterized in that: The width of the bottom plate is smaller than the width of the lining plate body, and both sides of the lining plate body are located outside the bottom plate.

7. The step liner for a ball mill according to claim 1, characterized in that: The lining plate body, the overlapping portion and the shielding portion are integrally formed.

8. A ball mill, characterized in that: It comprises a stepped liner for a ball mill as described in any one of claims 1 to 7.

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