A tubular ball mill

Abstract

The utility model relates to a tubular ball mill, the cylinder wall lining of tubular ball mill is spliced by many lining plates, and lining plate arrangement constitutes multiple lining plate groups along the axial arrangement of grinding cylinder, and each lining plate group is by many lining plates that splice along the circumference order is formed, and defines that the two lining plates adjacent in the circumference in a same lining plate group are reference lining plate and circumferential adjacent lining plate respectively, the inner surface of circumferential adjacent lining plate is higher than the inner surface of reference lining plate, the lining plate located in the back side of reference lining plate is axial adjacent lining plate, and the inner surface of axial adjacent lining plate is higher than the inner surface of reference lining plate, and the corresponding reference lining plate in different lining plate groups forms the helical groove structure with the coaxial line arrangement of grinding cylinder. The utility model solves the technical problem that the material is easy to stay in the feeding end in the prior art and causes the end lining of feeding end to be easy to wear.

Description

Technical Field

[0001] This utility model relates to grinding equipment, and more particularly to a tubular ductile ink mill. Background Technology

[0002] A tubular ball mill is a grinding equipment used in industries such as mineral processing, cement, and refractory materials. It is mainly used for grinding ores, fossil raw materials, and other materials. Its structure includes a ball mill support frame, on which a horizontally placed grinding cylinder is rotatably mounted. The inner wall of the grinding cylinder is lined with a cylinder wall liner, and end liners are located on the inner walls of both ends of the grinding cylinder. The cylinder wall liner and end liners are typically made of lining bricks. One end of the grinding cylinder has a feed inlet, and the other end has a discharge outlet. The discharge outlet has a perforated grid plate; the perforations only allow finely ground material to pass through, while larger grinding media (grinding balls) and unground coarse particles remain inside the ball mill for further grinding.

[0003] During use, multiple grinding balls are installed inside the grinding cylinder. The material enters the grinding cylinder through the feed inlet. As the grinding cylinder rotates, the grinding balls impact and squeeze to complete the grinding of the material. The tubular ductile mill is a continuous production mode, that is, the material continuously enters the grinding cylinder of the ball mill through the feed inlet. Relying on the feeding pressure of the material, the material moves towards the discharge port during the grinding process, thereby realizing the discharge.

[0004] The existing tubular ball mill has the following problems: the material moves towards the discharge end entirely by the feed pressure at the feed end, the axial movement power of the material is insufficient, the material flow resistance is large, the material is prone to stagnation, and the material causes particularly severe wear on the end liner of the feed end, resulting in a limited service life of the end liner of the feed end. Utility Model Content

[0005] The purpose of this utility model is to provide a tubular ball mill to solve the technical problem in the prior art that materials are easily retained at the feed end, which leads to easy wear of the end lining of the feed end.

[0006] The technical solution of this utility model is as follows: A tubular ball mill includes a ball mill support frame. A horizontally arranged grinding cylinder is rotatably mounted on the ball mill support frame. The grinding cylinder has a feed inlet at its front end and a discharge outlet at its rear end. The grinding cylinder is driven to rotate by a grinding cylinder power mechanism. A cylinder wall liner is provided on the inner circumference of the grinding cylinder, and end liners are provided on the inner walls of both ends of the grinding cylinder. The cylinder wall liner is composed of multiple liner plates spliced ​​together. The liner plates are arranged to form multiple liner plate groups arranged along the axial direction of the grinding cylinder. Each liner plate group consists of multiple liner plates sequentially spliced ​​along the circumference. The circumferential direction within the same liner plate group is defined as... Two adjacent inner liner plates are a reference inner liner plate and a circumferentially adjacent inner liner plate, respectively. The inner surface of the circumferentially adjacent inner liner plate is higher than the inner surface of the reference inner liner plate. Along the axial direction of the grinding cylinder, two adjacent inner liner plate groups are a front inner liner plate group and a rear inner liner plate group, respectively. Each inner liner plate in the rear inner liner plate group is located behind the corresponding inner liner plate in the front inner liner plate group. The inner liner plate located behind the reference inner liner plate is an axially adjacent inner liner plate. The inner surface of the axially adjacent inner liner plate is higher than the inner surface of the reference inner liner plate. The corresponding reference inner liner plates in different inner liner plate groups form a spiral groove structure coaxial with the grinding cylinder.

[0007] Furthermore, there are multiple spiral grooves, which are arranged at intervals along the circumference of the grinding cylinder.

[0008] Furthermore, the inner wall of the grinding cylinder is provided with T-shaped tracks corresponding to the inner liner plate assembly, and the bottom of each inner liner plate is provided with a T-shaped groove adapted to the T-shaped track. The T-shaped grooves of each inner liner plate in the same inner liner plate assembly are guided and moved in conjunction with the same T-shaped track.

[0009] Furthermore, the inner wall of the grinding cylinder is provided with hydraulic cylinders corresponding to the number of inner liner plates. The hydraulic cylinders have piston rods with their axes extending in the front-rear direction. Locking wedges are fixed on the piston rods, and the outer periphery of the inner liner plates has wedge-shaped surfaces that cooperate with the locking wedges.

[0010] Furthermore, the inner lining plates are symmetrically arranged on the front and rear sides of the outer end of each inner lining plate. The two inner lining plate wedge surfaces between the reference inner lining plate and the axially adjacent inner lining plate form an installation area that is larger on the outside and smaller on the inside. The hydraulic cylinder is set in the corresponding installation area.

[0011] Furthermore, each T-shaped track is composed of multiple arc-shaped track segments sequentially assembled along the circumference of the grinding cylinder, and each arc-shaped track segment is fixed to the inner wall of the grinding cylinder by bolts.

[0012] The beneficial effects of this technical solution are as follows: In this utility model, for the same liner plate group, the inner surface of the circumferentially adjacent liner plates is higher than the inner surface of the reference liner plate, thus the height of the reference liner plate is lower; while for two adjacent liner plate groups, the inner surface of the axially adjacent liner plates is higher than the reference liner plate. That is to say, the corresponding reference liner plates in different liner plate groups form a spiral groove structure coaxial with the grinding cylinder. When grinding materials, due to the guidance of the spiral groove, the materials have the power to move along the axial direction of the grinding cylinder towards the discharge port, avoiding the technical problem of material accumulation at the end liner of the feed end, which would cause easy wear of the end liner. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a specific embodiment of a tubular ball mill according to the present invention; Figure 2 for Figure 1 Diagram showing the fit of several adjacent inner lining plates along the central axis. Figure 3 for Figure 2 A schematic diagram showing the fit between adjacent inner lining plates in the circumferential direction of several corresponding inner lining plates. Figure 4 yes Figure 1 A schematic diagram showing the fit between several adjacent inner lining plates in the middle circumference upwards; In the diagram: 1. Front support leg; 2. Rear support leg; 3. Support roller; 4. Gear ring; 5. Inner liner plate; 6. Discharge port; 7. Inlet port; 8. Reference inner liner plate; 9. Circumferential adjacent inner liner plates; 10. Axial adjacent inner liner plates; 11. Grinding cylinder; 12. T-shaped track; 13. Hydraulic cylinder; 14. Locking wedge block; 15. Bolt; 16. Wedge-shaped surface of inner liner plate; 17. Installation area; 18. Arc-shaped track section; 19. End liner. Detailed Implementation

[0014] To make the objectives, technical solutions, and advantages of this utility model clearer, 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 for explaining the present utility model and are not intended to limit the present utility model; that is, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The components of the embodiments of the present utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0015] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0016] It should be noted that relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0017] The features and performance of this utility model will be further described in detail below with reference to the embodiments.

[0018] A specific embodiment of the tubular ball mill in this utility model is as follows: Figures 1-4 As shown: The tubular ductile mill in this embodiment is a continuous tubular ball mill.

[0019] The ball mill includes a ball mill support, on which a horizontally arranged grinding cylinder 11 is mounted on a rotating turntable. In this embodiment, the axis of the grinding cylinder 11 extends along the front-to-back direction. The ball mill support includes a front support leg 1 and a rear support leg 2. The front end of the grinding cylinder 11 is rotatably mounted on the front support leg 1, and the rear end of the grinding cylinder 11 is rotatably mounted on the rear support leg 2. The front end of the grinding cylinder is provided with a feed inlet 7, and the rear end of the grinding cylinder is provided with a discharge outlet 6. The grinding cylinder is driven to rotate by a grinding cylinder power mechanism. In this embodiment, the grinding cylinder power mechanism includes a geared motor (not shown in the figure), and a gear ring is fixed on the outer periphery of the grinding cylinder. The power output end of the geared motor is provided with a transmission gear that is connected to the gear ring 4.

[0020] The grinding cylinder has a circumferential inner wall liner and end liners on the inner walls at both ends. These are all existing technologies and will not be described in detail here.

[0021] The inner lining of the cylinder wall is composed of multiple inner lining plates 5 spliced ​​together. The inner lining plates are arranged to form multiple inner lining plate groups arranged sequentially along the axial direction of the grinding cylinder. Each inner lining plate group is a ring structure arranged coaxially with the grinding cylinder. Each inner lining plate group is composed of multiple inner lining plates spliced ​​sequentially along the circumference of the grinding cylinder.

[0022] In the same liner plate group, two circumferentially adjacent liner plates are defined as the reference liner plate 8 and the circumferentially adjacent liner plate 9. The inner surface of the circumferentially adjacent liner plate 9 is higher than the inner surface of the reference liner plate 8. That is to say, the inner surface of the circumferentially connected liner plates is closer to the axis of the grinding cylinder than the inner surface of the reference liner plate. Along the axis of the grinding cylinder, two adjacent liner plate groups are defined as the front liner plate group and the rear liner plate group. Each liner plate in the rear liner plate group is located behind the corresponding liner plate in the front liner plate group. The liner plate located behind the reference liner plate is the axially adjacent liner plate 10. The inner surface of the axially adjacent liner plate is higher than the inner surface of the reference liner plate. The corresponding reference liner plates in different liner plate groups form a spiral groove structure coaxial with the grinding cylinder.

[0023] In summary, the inner lining plate in this invention comes in two models, such as... Figure 2 As shown, all inner lining plates marked with "B" are of the same model, and all inner lining plates marked with "A" are of the same model. The height of the inner lining plates marked with "A" is lower than that of the inner lining plates marked with "B". Therefore, the inner lining plates marked with "A" form a spiral groove structure. During the rotation of the grinding cylinder, the grinding balls inside the cylinder grind the material, and the grinding will proceed along... Figure 1 The arrow in the image indicates the direction of the spiral groove structure, which moves along the axial direction of the grinding cylinder towards the discharge end to prevent material from accumulating at the feed end and causing excessive wear on the end liner of the feed end.

[0024] In this embodiment, there are multiple spiral grooves, which are arranged at intervals along the circumference of the grinding cylinder.

[0025] The inner lining is fixed in the following way: The inner wall of the grinding cylinder is provided with T-shaped rails 12 corresponding to the inner liner plate group. The bottom of each inner liner plate is provided with a T-shaped groove adapted to the T-shaped rail 12. The T-shaped grooves of each inner liner plate in the same inner liner plate group are guided and moved in cooperation with the same T-shaped rail 12. The radial position of the corresponding inner liner plate relative to the grinding cylinder is limited by the cooperation between the T-shaped rail 12 and the T-shaped groove.

[0026] Each T-shaped track is composed of multiple arc-shaped track segments 18 sequentially assembled along the circumference of the grinding cylinder. The circumferential length of each arc-shaped track segment 18 corresponds to the circumferential length of one or more inner lining plates. Each arc-shaped track segment 18 is fixed to the inner wall of the grinding cylinder 11 by bolts 15, the axis of which extends radially along the grinding cylinder 11. The torque input end, i.e., the torsion end, of the bolt is located on the outer side of the grinding cylinder 11. This allows for convenient maintenance and replacement of individual inner lining plates.

[0027] Hydraulic cylinders 13, corresponding to the number of inner liner plates, are installed on the inner wall of the grinding cylinder. Each hydraulic cylinder 13 has a piston rod whose axis extends in the front-rear direction. A locking wedge block 14 is fixed on the piston rod. The outer periphery of each inner liner plate has a wedge-shaped surface 16 that mates with the locking wedge block. The wedge-shaped surfaces of the inner liner plates are symmetrically arranged on the front and rear sides of the outer ends of each inner liner plate. The two wedge-shaped surfaces of the inner liner plates between the reference inner liner plate and the axially adjacent inner liner plate form an installation area that is larger on the outside and smaller on the inside. The hydraulic cylinders 13 are located in the corresponding installation area 17. That is to say, one function of the wedge-shaped surface 16 of the inner liner plate is to cooperate with the locking wedge block 14 to fix the inner liner plate, and another function is to form an installation area to facilitate the installation of the hydraulic cylinder.

[0028] The T-shaped track and the T-shaped groove on the inner liner plate achieve radial positioning of the inner liner plate relative to the grinding cylinder. The piston rod of the hydraulic cylinder extends, and the wedge surface of the locking wedge block pushes against the wedge surface of the inner liner plate, thus fixing the position of the inner liner plate.

[0029] For the same liner plate group, the inner surface of the circumferentially adjacent liner plates is higher than the inner surface of the reference liner plate, thus the reference liner plate has a lower height. However, for two adjacent liner plate groups, the inner surface of the axially adjacent liner plates is higher than the reference liner plate. In other words, the corresponding reference liner plates in different liner plate groups form a spiral groove structure coaxial with the grinding cylinder. During material grinding, the spiral groove guides the material, giving it the power to move along the axial direction of the grinding cylinder towards the discharge port. This avoids the technical problem of material accumulation at the end liner of the feed end, which would cause easy wear of the end liner.

[0030] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. The patent protection scope of the present utility model shall be determined by the claims. Similarly, any equivalent structural changes made based on the description and drawings of the present utility model shall also be included within the protection scope of the present utility model.

Claims

1. A tubular ball mill, comprising a ball mill support, on which a horizontally arranged grinding cylinder is rotatably mounted, a feed inlet is provided at the front end of the grinding cylinder, a discharge outlet is provided at the rear end of the grinding cylinder, the grinding cylinder is driven to rotate by a grinding cylinder power mechanism, a cylinder wall liner is provided on the inner circumference of the grinding cylinder, and end liners are provided on the inner walls of both ends of the grinding cylinder, characterized in that: The inner lining of the cylinder wall is composed of multiple inner lining plates spliced ​​together. The inner lining plates are arranged to form multiple inner lining plate groups arranged along the axial direction of the grinding cylinder. Each inner lining plate group consists of multiple inner lining plates spliced ​​together in a circumferential direction. Two inner lining plates that are adjacent in the circumferential direction in the same inner lining plate group are defined as the reference inner lining plate and the circumferentially adjacent inner lining plate. The inner surface of the circumferentially adjacent inner lining plate is higher than the inner surface of the reference inner lining plate. Along the axial direction of the grinding cylinder, two adjacent inner lining plate groups are defined as the front inner lining plate group and the rear inner lining plate group. Each inner lining plate in the rear inner lining plate group is located behind the corresponding inner lining plate in the front inner lining plate group. The inner lining plate located behind the reference inner lining plate is the axially adjacent inner lining plate. The inner surface of the axially adjacent inner lining plate is higher than the inner surface of the reference inner lining plate. The corresponding reference inner lining plates in different inner lining plate groups form a spiral groove structure that is coaxial with the grinding cylinder.

2. The tubular ball mill according to claim 1, characterized in that: There are multiple spiral grooves, which are arranged at intervals along the circumference of the grinding cylinder.

3. The tubular ball mill according to claim 1 or 2, characterized in that: The inner wall of the grinding cylinder is provided with T-shaped tracks corresponding to the inner liner plate assembly. The bottom of each inner liner plate is provided with a T-shaped groove that fits the T-shaped track. The T-shaped grooves of each inner liner plate in the same inner liner plate assembly are guided and moved in conjunction with the same T-shaped track.

4. The tubular ball mill according to claim 3, characterized in that: The inner wall of the grinding cylinder is equipped with hydraulic cylinders corresponding to the number of inner liner plates. The hydraulic cylinders have piston rods whose axes extend in the front-back direction. Locking wedges are fixed on the piston rods. The outer periphery of the inner liner plates has wedge-shaped surfaces that cooperate with the locking wedges.

5. The tubular ball mill according to claim 4, characterized in that: The inner lining plate has symmetrical wedge-shaped surfaces on the front and rear sides of the outer end of each inner lining plate. The two wedge-shaped surfaces of the inner lining plate between the reference inner lining plate and the axially adjacent inner lining plate form an installation area that is larger on the outside and smaller on the inside. The hydraulic cylinder is set in the corresponding installation area.

6. The tubular ball mill according to claim 3, characterized in that: Each T-shaped track is composed of multiple arc-shaped track segments sequentially assembled along the circumference of the grinding cylinder, and each arc-shaped track segment is fixed to the inner wall of the grinding cylinder by bolts.

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