Lining of stepped wet ball mill

Abstract

The utility model relates to the technical field of ball mills, in particular to a stepped wet-type ball mill lining which comprises a first-order lining plate arranged on the inner wall of a ball mill and located at one end, close to a feeding port, of the ball mill, and a second-order lining plate arranged on the inner wall of the ball mill and located at one end, away from the feeding port, of the first-order lining plate. The third-order lining plate is arranged on the inner wall of the ball mill and located at the end, away from the feeding port, of the second-order lining plate, the section thickness of the second-order lining plate is different from that of the first-order lining plate, and the section thickness of the third-order lining plate is different from that of the first-order lining plate and that of the second-order lining plate. The whole service life of the lining plate is effectively prolonged, and meanwhile partial replacement under the condition that partial lining plates need to be replaced is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to ball mill technical field especially relates to a ladder type wet ball mill lining. BACKGROUND

[0002] In actual production operation, the lining plate of the wet ball mill cylinder feeding end part wears the fastest, the lining plate of the middle part of the cylinder is the second, and the lining plate of the cylinder discharge end part wears the slowest. After long-term operation of the wet ball mill, the cylinder lining wear is inconsistent. In order to ensure the safe and stable operation of the wet ball mill, when the lining plate of the wet ball mill cylinder feeding end part is seriously worn, the cylinder lining is replaced as a whole, and the cylinder discharge end part lining plate that can still be used is discarded. The wet ball mill lining plate is composed of lifting strips and cylinder plates, and the design of the wet ball mill lining plate which is easy to install and maintain is crucial for the stable operation of the equipment and the extension of the service life.

[0003] Chinese patent publication No. CN106391223A discloses a wet ball mill lining plate structure, which comprises a rubber lining plate assembly arranged on the inner wall of a ball mill barrel of a ball mill and a plurality of lifting strips made of rubber and arranged axially and spaced apart on the inner wall side of the ball mill barrel. The rubber lining plate assembly comprises a plurality of rubber lining plates, and gaps are prearranged in the axial direction between the rubber lining plates. The lifting strips are located at the gaps and press the rubber lining plates on both sides of the gaps to seal the gaps. The inside of the lifting strips is provided with T-shaped holes in the axial direction of the lifting strips, and the lifting strips are connected and fixed to the ball mill barrel by connecting bolts arranged in the T-shaped holes.

[0004] Therefore, although the above scheme can lift the balls and materials in the ball mill barrel to the half-empty position in the barrel by using the lifting strips, the balls can hit the limestone in the barrel by free fall to achieve the effect of grinding the limestone, but the above scheme cannot effectively prolong the overall service life of the lining plate while realizing the partial replacement of the lining plate in the case of serious wear. UTILITY MODEL CONTENTS

[0005] Therefore, the utility model provides a ladder type wet ball mill lining to overcome the problem that the prior art cannot effectively prolong the overall service life of the lining plate while realizing the partial replacement of the lining plate in the case of serious wear.

[0006] To achieve the above purpose, the utility model provides a ladder type wet ball mill lining, which comprises:

[0007] A first lining plate is arranged on the inner wall of the ball mill and located at one end of the ball mill close to the feed inlet.

[0008] a second-order lining plate arranged on the inner wall of the ball mill and located at one end of the first-order lining plate away from the feed inlet; the cross-sectional thickness of the second-order lining plate is different from that of the first-order lining plate;

[0009] a third-order lining plate arranged on the inner wall of the ball mill and located at one end of the second-order lining plate away from the feed inlet; the cross-sectional thickness of the third-order lining plate is different from that of the first-order lining plate and the second-order lining plate.

[0010] Further, the interface thickness of the first-order lining plate is greater than that of the second-order lining plate, and the interface thickness of the second-order lining plate is greater than that of the third-order lining plate.

[0011] Further, the first-order lining plate comprises a plurality of first-order cylinder plates, the second-order lining plate comprises a plurality of second-order cylinder plates, and the third-order lining plate comprises a plurality of third-order cylinder plates.

[0012] Further, one end of each of the first-order cylinder plates along the circumference of the ball mill cylinder body is provided with a first protrusion, and the opposite end is provided with a first recess;

[0013] One end of each of the second-order cylinder plates along the circumference of the ball mill cylinder body is provided with a second protrusion, and the opposite end is provided with a second recess;

[0014] One end of each of the third-order cylinder plates along the circumference of the ball mill cylinder body is provided with a third protrusion, and the opposite end is provided with a third recess.

[0015] Further, the first protrusion and the first recess can be mutually embedded; the second protrusion and the second recess can be mutually embedded; and the third protrusion and the third recess can be mutually embedded.

[0016] Further, one end of each of the first-order cylinder plates close to the second-order lining plate is provided with a first boss.

[0017] Further, one end of each of the second-order cylinder plates close to the first-order lining plate is provided with a first recess, and one end of each of the second-order cylinder plates close to the third-order lining plate is provided with a second boss; the first recess and the first boss can be mutually embedded.

[0018] Further, one end of each of the third-order cylinder plates close to the second-order lining plate is provided with a second recess; the second recess and the second boss can be mutually embedded.

[0019] Further, each of the lifting strips can be arranged at the gap between the corresponding protrusion and recess, and at the gap between the corresponding boss and recess.

[0020] Further, the material of the first-order cylinder plate, the second-order cylinder plate, and the third-order cylinder plate is rubber.

[0021] Compared with the prior art, the beneficial effects of the utility model lie in that the utility model sets the first-order lining plate, the second-order lining plate and the third-order lining plate with different cross-sectional thicknesses on the inner wall of the ball mill, effectively avoids the situation that the lining plate needs to be replaced in whole when part of the lining plate needs to be replaced, and effectively realizes the partial replacement when part of the lining plate needs to be replaced.

[0022] Further, the interface thickness of the first-order lining plate is greater than that of the second-order lining plate, and the thickness of the second-order lining plate is greater than that of the third-order lining plate, which effectively enhances the degree of overall wear resistance of the lining plate during use under the condition that the lining plate is relatively seriously worn at the feed inlet part, and effectively improves the overall service life of the lining plate.

[0023] Further, the lining plates in the utility model are composed of corresponding cylinder plates, which is conducive to the operation state of the lining plates suitable for the ball mill part, further improves the overall service life of the lining plate, and further realizes the partial replacement when part of the lining plate needs to be replaced.

[0024] Further, the lining plates in the utility model are composed of corresponding cylinder plates, which is conducive to the operation state of the lining plates suitable for the ball mill part, further improves the overall service life of the lining plate, and further realizes the partial replacement when part of the lining plate needs to be replaced.

[0025] Further, the lining plates in the utility model are composed of corresponding cylinder plates, which is conducive to the operation state of the lining plates suitable for the ball mill part, further improves the overall service life of the lining plate, and further realizes the partial replacement when part of the lining plate needs to be replaced.

[0026] Further, the lining plates in the utility model are composed of corresponding cylinder plates, which is conducive to the operation state of the lining plates suitable for the ball mill part, further improves the overall service life of the lining plate, and further realizes the partial replacement when part of the lining plate needs to be replaced.

[0027] Further, the second protrusions and the second recesses can be mutually embedded, effectively ensuring good connection between the second lining plate and the third lining plate, effectively ensuring movement of the material at the second lining plate to the third lining plate, improving the operation efficiency of the ball mill, further improving the overall service life of the lining plate, and further realizing partial replacement of the lining plate of the cylinder part under the condition of needing replacement.

[0028] Further, the utility model discloses that the gap between corresponding protrusions and recesses and the gap between corresponding protrusions and recesses are further provided with lifting strips, the lifting strips can cover the gap of the embedded place of each lining plate and each lining plate, the lifting strips can effectively avoid the material from falling into the embedded gap of each lining plate and each lining plate when lifting the material, effectively avoiding noise and vibration in the use process of the ball mill, improving the operation efficiency and stability of the ball mill, and further improving the overall service life of the lining plate.

[0029] Further, the utility model discloses that the utility model discloses that the material quality of first lining plate, second lining plate and third lining plate is rubber, and the service life of rubber is long and can reduce noise and energy consumption in the use process of ball mill, and further improve the overall service life of the lining plate. ACCURACY OF DRAWINGS

[0030] Figure 1 It is the main view cross section drawing of the utility model embodiment step ladder type wet ball mill lining.

[0031] Figure 2 It is the structure schematic diagram of the utility model embodiment step ladder type wet ball mill lining first lining plate.

[0032] Figure 3 It is the structure schematic diagram of the utility model embodiment step ladder type wet ball mill lining second lining plate.

[0033] Figure 4 It is the structure schematic diagram of the utility model embodiment step ladder type wet ball mill lining third lining plate.

[0034] In the drawing: 1, first lining plate;2, second lining plate;3, third lining plate;4, first lining plate;5, second lining plate;6, third lining plate;7, first protrusion;8, first recess;9, second protrusion;10, second recess;11, third protrusion;12, third recess;13, first protrusion;14, first recess;15, second protrusion;16, second recess;17, lifting strip. CONCRETE IMPLEMENTATION

[0035] In order to make the purpose and advantages of the utility model more clearly and obviously, the utility model is further described below in combination with examples; it should be understood that the specific examples described herein are only used to explain the utility model and are not used to limit the utility model.

[0036] The preferred embodiments of the utility model are described below with reference to the drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the utility model and are not used to limit the protection scope of the utility model.

[0037] It should be noted that, in the description of the utility model, the terms "upper", "lower", "left", "right", "inner", "outer" and the like indicating the direction or position relationship are based on the direction or position relationship shown in the drawings, which is only for the convenience of description and is not indicative or suggestive of the device or element having a specific orientation, being constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0038] In addition, it should also be noted that, in the description of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. Those skilled in the art can understand the specific meaning of the above terms in the utility model according to the specific circumstances.

[0039] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 , which are respectively the main view cross-sectional view of the stepped wet ball mill liner embodiment of the utility model, the structure schematic view of the first cylinder plate, the structure schematic view of the second cylinder plate and the structure schematic view of the third cylinder plate. The stepped wet ball mill liner of the utility model comprises a first lining plate 1, a second lining plate 2, a third lining plate 3, a first cylinder plate 4, a second cylinder plate 5, a third cylinder plate 6, a first protrusion 7, a first groove 8, a second protrusion 9, a second groove 10, a third protrusion 11, a third groove 12, a first boss 13, a first recess 14, a second boss 15, a second recess 16 and a lifting strip 17.

[0040] The first-order cylinder plate 4 is connected by the first-order protrusion 7 and the first-order groove 8, and the gap between the first-order protrusion 7 and the first-order groove 8 of each first-order cylinder plate 4 is provided with a lifting strip 17, so as to form the first-order lining plate 1; the second-order cylinder plate 5 is connected by the second-order protrusion 9 and the second-order groove 10, and the gap between the second-order protrusion 9 and the second-order groove 10 of each second-order cylinder plate 5 is provided with a lifting strip 17, so as to form the second-order lining plate 2; the third-order cylinder plate 6 is connected by the third-order protrusion 11 and the third-order groove 12, and the gap between the third-order protrusion 11 and the third-order groove 12 of each third-order cylinder plate 6 is provided with a lifting strip 17, so as to form the third-order lining plate 3; the first-order lining plate 1 and the second-order lining plate 2 are connected by the first protrusion 13 arranged at one end of each first-order cylinder plate 4 close to the second-order lining plate 2 and the first recess 14 arranged at one end of each second-order cylinder plate 5 close to the first-order lining plate 1, and the gap between the first protrusion 13 and the first recess 14 is provided with a lifting strip 17, so as to move the material at the first-order lining plate 1 to the second-order lining plate 2 for grinding; the second-order lining plate 2 and the third-order lining plate 3 are connected by the second protrusion 15 arranged at one end of each second-order cylinder plate 5 close to the third-order lining plate 3 and the second recess 16 arranged at one end of each third-order cylinder plate 6 close to the second-order lining plate 2, and the gap between the second protrusion 15 and the second recess 16 is provided with a lifting strip 17, so as to move the material ground in the second-order lining plate 2 to the third-order lining plate 3 for discharging.

[0041] When the stepped wet ball mill liner operates, the ball mill rotates at a certain speed through the driving device, the material is introduced into the first-order lining plate 1 of the cylinder inlet lining, the material in the first-order lining plate 1 spirally and uniformly enters the second-order lining plate 2 of the cylinder middle lining, the grinding medium in the cylinder middle lining generates a centrifugal force when rotating, so that a friction force is generated between the grinding medium and the second-order lining plate 2, the friction force makes the grinding medium rotate with the cylinder and reach a certain height, when the gravity of the grinding medium is greater than the centrifugal force, the grinding medium is thrown and falls off the cylinder, so that the material is hit and ground, and the material is moved to the third-order lining plate 3 of the cylinder outlet lining after being ground, and then discharged, the discharged material is classified to obtain qualified products, and the unqualified products are introduced into the first-order lining plate 1 of the cylinder inlet lining for the next round of grinding, until the grinding operation is completed.

[0042] When the stepped wet ball mill liner of the utility model is installed, firstly, the sundries and residues inside and outside the cylinder are removed to ensure the cleanliness and integrity of the inner wall of the cylinder, then the integrity and appearance of the lining plate are checked to ensure that there is no damage and deformation, the corresponding equipment and auxiliary tools are prepared, the position and direction of the lining plate are determined according to the size of the lining plate and the inner diameter of the cylinder, then the positioning and installation are marked on the inner wall of the cylinder, before the lining plate is placed, the rubber pad should be installed between the inner wall of the cylinder and the lining plate to reduce the wear between the lining plate and the cylinder, the corresponding equipment is used to place the first-stage cylinder plate 4 in the cylinder and push it from one side of the cylinder to the other end, while the corresponding auxiliary tools are used for positioning to ensure that the first-stage cylinder plate 4 is completely attached to the cylinder, the first-stage groove 7 of the other first-stage cylinder plate 4 and the first-stage protrusion 8 of the first-stage cylinder plate 4 are embeddedly installed, and the gap at the embedded mutual embedding is covered by the lifting strip 17, the position and direction of the first-stage cylinder plate 4 are paid attention to during the installation process to ensure that the installation position and angle are correct, after part of the first-stage cylinder plate 4 is installed, the cylinder is turned by a certain angle so that the installed part is directly below, and meanwhile, the anti-reversing measure is well done, and the first-stage cylinder plate 4 is embeddedly installed along the circumference of the ball mill cylinder to form the first-stage lining plate 1 after the embedding installation is completed;

[0043] The first recess 14 of the second-stage cylinder plate 5 and the first boss 13 of the first-stage cylinder plate 4 are embeddedly installed, and the gap of the embedded installation is covered by the lifting strip 17, the second-stage groove 10 of the other second-stage cylinder plate 5 and the second-stage protrusion 9 of the second-stage cylinder plate 5 are embeddedly installed, and the gap of the embedded installation is covered by the lifting strip 17, and the second-stage cylinder plate 5 is embeddedly installed along the circumference of the ball mill cylinder to form the second-stage lining plate 2 after the embedding installation is completed, the second boss 15 of the second-stage cylinder plate 5 and the second recess 16 of the third-stage cylinder plate 6 are embeddedly installed, and the gap of the embedded installation is covered by the lifting strip 17, the third-stage groove 12 of the other third-stage cylinder plate 6 and the third-stage protrusion 11 of the third-stage cylinder plate 6 are embeddedly installed, and the gap of the embedded installation is covered by the lifting strip 17, and the third-stage cylinder plate 6 is embeddedly installed along the circumference of the ball mill cylinder to form the third-stage lining plate 3 after the embedding installation is completed, and after the lining plates are completely installed, whether the edges and connecting portions of each lining plate are tightly attached to the cylinder is checked, and if loose and cracks exist, the lining plates should be repaired to avoid affecting the normal operation of the equipment.

[0044] When the stepped wet ball mill liner of the utility model is replaced, the part of the liner plate which needs to be replaced due to serious wear or other reasons is confirmed, the ball mill is ensured to be in a shutdown state before the liner plate is replaced, the feeding end and the discharging end of the ball mill are closed to ensure safety during replacement, the residual material is cleaned, the old liner plate which needs to be replaced is disassembled by using corresponding equipment and auxiliary tools, attention is paid to not damaging other parts, the disassembly is performed according to the installation order of the first-order cylinder plate 4, the second-order cylinder plate 5 and the third-order cylinder plate 6, for example, when the first-order liner plate 1 needs to be replaced, the last first-order cylinder plate 4 and the lifting strip 17 which are embedded and installed along the circumference of the ball mill cylinder are disassembled, other first-order cylinder plates 4 and other lifting strips 17 along the circumference of the cylinder are disassembled from the gap where the last first-order cylinder plate 4 is disassembled, finally, the lifting strip 17 which is embedded and installed at the first recess 14 of the second-order cylinder plate 5 and the first boss 13 of the first-order cylinder plate 4 is disassembled, the new liner plate is cleaned, the oil stains and dust and other sundries on the new liner plate are removed, the new liner plate is ensured to be clean and complete, the new liner plate is installed in the ball mill according to the disassembly order and is fixed, after installation, the liner plate gap and flatness are adjusted, and the replacement of the stepped wet ball mill liner is completed.

[0045] The technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but it is easy for those skilled in the art to understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to related technical features without departing from the principles of the utility model, and the technical scheme after the changes or replacements will fall within the protection scope of the utility model.

[0046] The above description is only preferred embodiments of the utility model and is not used for limiting the utility model; for those skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A stepped wet ball mill liner characterized by, The application relates to a ball mill liner, which comprises: a first-stage liner plate arranged on the inner wall of the ball mill and located at one end of the ball mill close to a feed inlet; a second-stage liner plate arranged on the inner wall of the ball mill and located at one end of the first-stage liner plate away from the feed inlet; the cross-sectional thickness of the second-stage liner plate is different from that of the first-stage liner plate; a third-stage liner plate arranged on the inner wall of the ball mill and located at one end of the second-stage liner plate away from the feed inlet; the cross-sectional thickness of the third-stage liner plate is different from that of the first-stage liner plate and the second-stage liner plate.

2. The stepped wet ball mill liner of claim 1, wherein, The interface thickness of the first-stage liner plate is greater than that of the second-stage liner plate, and the interface thickness of the second-stage liner plate is greater than that of the third-stage liner plate.

3. The stepped wet ball mill liner of claim 1, wherein, The first-stage liner plate comprises a plurality of first-stage cylinder plates, the second-stage liner plate comprises a plurality of second-stage cylinder plates, and the third-stage liner plate comprises a plurality of third-stage cylinder plates.

4. The stepped wet ball mill liner of claim 3, wherein, Each of the first-stage cylinder plates is provided with a first protrusion at one end in the circumferential direction of the cylinder body of the ball mill and a first recess at the other end opposite to the first protrusion; each of the second-stage cylinder plates is provided with a second protrusion at one end in the circumferential direction of the cylinder body of the ball mill and a second recess at the other end opposite to the second protrusion; each of the third-stage cylinder plates is provided with a third protrusion at one end in the circumferential direction of the cylinder body of the ball mill and a third recess at the other end opposite to the third protrusion.

5. The stepped wet ball mill liner of claim 4, wherein, The first protrusion and the first recess can be mutually embedded, the second protrusion and the second recess can be mutually embedded, and the third protrusion and the third recess can be mutually embedded.

6. The stepped wet ball mill liner of claim 5, wherein, Each of the first-stage cylinder plates is provided with a first boss at one end close to the second-stage liner plate.

7. The stepped wet ball mill liner of claim 6, wherein, Each of the second-stage cylinder plates is provided with a first recess at one end close to the first-stage liner plate and a second boss at one end close to the third-stage liner plate; the first recess and the first boss can be mutually embedded.

8. The stepped wet ball mill liner of claim 7, wherein, Each of the third-stage cylinder plates is provided with a second recess at one end close to the second-stage liner plate; the second recess and the second boss can be mutually embedded.

9. The stepped wet ball mill liner of claim 8, wherein, Each of the lifting strips can be arranged at the gap between the corresponding protrusion and recess and at the gap between the corresponding boss and recess.

10. The stepped wet ball mill liner of claim 3, wherein, The first-stage cylinder plates, the second-stage cylinder plates and the third-stage cylinder plates are made of rubber.

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