Mineral powder vertical mill

Abstract

The utility model discloses a vertical mill for mineral powder. The vertical mill comprises an equipment rack, the fine grinding frame is fixed on the surface of the equipment rack; the fine grinding arc-shaped screen is fixed on the inner wall of the fine grinding frame; the first grinding roller is rotationally connected to the interior of the fine grinding frame; the first fixing frame is fixed on the outer wall of the first grinding roller; and the fine grinding blocks are fixed to the outer wall of the first fixing frame, the multiple sets of fine grinding blocks are arranged in an annular array mode, multiple sets of arc-shaped grinding strips are fixed to the surface of the fine grinding arc-shaped screen, and grinding grooves matched with the arc-shaped grinding strips are formed in the surfaces of the fine grinding blocks. According to the vertical mill for the mineral powder, a two-stage grinding structure combining coarse grinding and fine grinding is adopted, so that the grinding efficiency and precision of the mineral powder are greatly improved, the granularity of a finished product of the mineral powder is more uniform, and higher production requirements are met.

Description

vertical mill for mineral powder Technical Field

[0001] This utility model relates to the technical field of mineral powder processing, and in particular to a vertical mill for mineral powder. Background Technology

[0002] In the mineral powder processing, the discharge mechanism of a vertical roller mill plays a crucial role in the fineness of the mineral powder and production efficiency. Existing vertical roller mills suffer from numerous problems, including insufficient grinding precision, resulting in inconsistent quality of finished mineral powder; poor equipment stability, leading to frequent malfunctions that disrupt production schedules. These issues limit the further development and application of vertical roller mills in the mineral powder production industry. Summary of the Invention

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, the purpose of this utility model is to propose a vertical mill for mineral powder, which adopts a two-stage grinding structure that combines coarse grinding and fine grinding, greatly improving the grinding efficiency and precision of mineral powder, and making the finished mineral powder more uniform in particle size, thus meeting higher production requirements.

[0005] To achieve the above objectives, this utility model proposes a vertical mill for mineral powder, comprising:

[0006] Equipment rack;

[0007] A fine grinding frame, which is fixed to the surface of the equipment frame;

[0008] A finely ground arc-shaped screen is fixed to the inner wall of the fine grinding frame;

[0009] The first grinding roller is rotatably connected inside the fine grinding frame;

[0010] A first fixing frame is fixed to the outer wall of the first grinding roller;

[0011] Fine grinding blocks, the number of fine grinding blocks is multiple sets, the fine grinding blocks are fixed on the outer wall of the first fixed frame, the multiple sets of fine grinding blocks are arranged in a ring array, wherein, the surface of the fine grinding arc screen is fixed with multiple sets of arc grinding strips, and the surface of the fine grinding block is provided with grinding grooves adapted to the arc grinding strips;

[0012] A first drive mechanism is fixed on the equipment frame, and the output of the first drive mechanism is connected to one end of the first grinding roller.

[0013] The mineral powder vertical mill of this utility model adopts a two-stage grinding structure that combines coarse grinding and fine grinding, which greatly improves the grinding efficiency and precision of mineral powder, and makes the finished mineral powder more uniform in particle size, thus meeting higher production requirements.

[0014] In addition, the vertical mill for mineral powder proposed in the application may also have the following additional technical features:

[0015] Specifically, the two sides of the arc-shaped grinding strip are chamfered.

[0016] Specifically, it also includes a coarse grinding frame, which is fixed above the fine grinding frame. A coarse grinding arc screen is fixed to the inner wall of the coarse grinding frame. A second grinding roller is rotatably connected inside the coarse grinding frame. A second fixing frame is fixed to the outer wall of the second grinding roller. Multiple sets of coarse grinding blocks are fixed to the outer wall of the second fixing frame. A second driving mechanism is fixed on the equipment frame. The output of the second driving mechanism is connected to one end of the second grinding roller. The aperture of the coarse grinding arc screen is larger than that of the fine grinding arc screen.

[0017] Specifically, the sidewalls of both the fine grinding block and the coarse grinding block are chamfered.

[0018] Specifically, the method includes a discharge frame, which is fixed to the output port of the fine grinding frame.

[0019] Specifically, it also includes a feed hopper, which is fixed to the input port of the rough grinding frame.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0022] Figure 1 is a structural schematic diagram of the vertical mill for mineral powder of this utility model;

[0023] Figure 2 is a structural schematic diagram of the coarse grinding frame and fine grinding frame in the vertical mill for mineral powder of this utility model;

[0024] Figure 3 is a schematic diagram of the fine grinding frame in the vertical mill for mineral powder of this utility model;

[0025] Figure 4 is a structural schematic diagram of the first grinding roller and its connecting components in the vertical mill for mineral powder of this utility model.

[0026] As shown in the figure: 1. Equipment frame; 2. Fine grinding frame; 3. Fine grinding arc screen; 4. First grinding roller; 5. First fixed frame; 6. Fine grinding block; 7. Arc grinding strip; 8. Grinding groove; 9. First drive mechanism; 10. Coarse grinding frame; 11. Second drive mechanism; 12. Coarse grinding block; 13. Discharge frame; 14. Feed hopper. Detailed Implementation

[0027] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Rather, the embodiments of the present invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0028] The following describes an embodiment of the vertical mill for mineral powder with reference to the accompanying drawings.

[0029] As shown in Figures 1-4, the vertical mill for mineral powder according to this utility model embodiment may include:

[0030] Equipment frame 1: Serves as the main support for the entire mechanism, providing the mounting base for other components.

[0031] Fine grinding frame 2: Fixed on the surface of the equipment frame 1, it is the main space for fine grinding operations.

[0032] Fine grinding arc screen 3: Fixed on the inner wall of fine grinding frame 2, used to screen finely ground mineral powder.

[0033] First grinding roller 4: Rotatably connected inside the fine grinding frame 2, it grinds mineral powder by rotating.

[0034] First fixing frame 5: fixed to the outer wall of the first grinding roller 4, used to install fine grinding block 6.

[0035] Fine grinding blocks 6: Multiple sets are fixed to the outer wall of the first fixed frame 5 in a circular array. The surface of each fine grinding block 6 has grinding grooves 8 that match the arc-shaped grinding strips 7. When the first grinding roller 4 rotates, the fine grinding blocks 6 interact with the arc-shaped grinding strips 7 to finely grind the mineral powder. The surface of the fine grinding arc-shaped screen 3 is fixed with multiple sets of arc-shaped grinding strips 7, and the surface of the fine grinding blocks 6 has grinding grooves 8 that match the arc-shaped grinding strips 7. The interaction between the arc-shaped grinding strips 7 and the grinding grooves 8 of the fine grinding blocks 6 improves the grinding effect.

[0036] First drive mechanism 9: Fixed on the equipment frame 1, its output end is connected to one end of the first grinding roller 4, providing power for the rotation of the first grinding roller 4.

[0037] In addition, this utility model has the following improved design:

[0038] In an optional embodiment, the two sides of the arc-shaped grinding strip 7 are chamfered. This design can reduce the jamming of mineral powder during the grinding process and improve the smoothness and efficiency of grinding.

[0039] In an optional embodiment, a coarse grinding frame 10 is further included, which is fixed above the fine grinding frame 2. A coarse grinding arc-shaped screen is fixed to the inner wall of the coarse grinding frame 10, and a second grinding roller is rotatably connected inside the coarse grinding frame 10. A second fixing frame is fixed to the outer wall of the second grinding roller, and multiple sets of coarse grinding blocks 12 are fixed to the outer wall of the second fixing frame. A second drive mechanism 11 is fixed on the equipment frame 1, and the output of the second drive mechanism 11 is connected to one end of the second grinding roller. The aperture of the coarse grinding arc-shaped screen is larger than that of the fine grinding arc-shaped screen 3. The mineral powder is first initially ground by the coarse grinding frame 10, and then enters the fine grinding frame 2 for fine grinding, thus improving the overall grinding efficiency and accuracy.

[0040] In an optional embodiment, the sidewalls of both the fine grinding block 6 and the coarse grinding block 12 are chamfered.

[0041] In an optional embodiment, a discharge frame 13 is also included, which is fixed to the output port of the fine grinding frame 2 to facilitate the collection of ground mineral powder.

[0042] In an optional embodiment, a feed hopper 14 is also included, which is fixed to the input port of the coarse grinding frame 10 to facilitate the feeding of the mineral powder to be ground into the equipment.

[0043] It should be noted that the first drive mechanism 9 includes a motor, a reducer, and a transmission belt. The motor is fixedly mounted on the equipment frame 1, serving as a power source and outputting high-speed rotational power. The reducer is connected to the output shaft of the motor, and its function is to reduce the high speed output by the motor to a speed suitable for the operation of the first grinding roller 4, while increasing the torque to ensure that the first grinding roller 4 can rotate stably and powerfully. The transmission belt is sleeved on the output shaft of the reducer and one end of the first grinding roller 4, transmitting the power output by the reducer to the first grinding roller 4 through belt drive, driving the first grinding roller 4 to rotate and achieve fine grinding of the mineral powder.

[0044] The second drive mechanism 11 also includes a motor, a reducer, and a coupling. The motor is securely mounted on the equipment frame 1, providing initial power for the entire drive. The reducer is connected to the output shaft of the motor and, through an internal gear transmission structure, converts the high speed output by the motor into a low speed suitable for the operation of the second grinding roller, while also increasing torque to provide sufficient grinding power for the second grinding roller. The coupling tightly connects the output shaft of the reducer to one end of the second grinding roller, achieving a rigid connection between the two. This ensures that power can be efficiently and stably transmitted from the reducer to the second grinding roller, driving the second grinding roller to rotate at high speed, thereby enabling the coarse grinding block 12 to perform preliminary grinding of the mineral powder entering the coarse grinding frame 10.

[0045] Specifically, in actual implementation, the vertical grinding mill of this invention is installed in a standard mineral powder production workshop environment. After the equipment is started, the iron ore to be ground is conveyed to the coarse grinding frame 10 through the feed hopper 14. At this time, the second drive mechanism 11 starts working, and its output shaft drives the second grinding roller to rotate. Multiple sets of coarse grinding blocks 12, fixed on the second fixed frame on the outer wall of the second grinding roller, rotate accordingly. These coarse grinding blocks 12 perform preliminary grinding on the iron ore entering the coarse grinding frame 10. During the grinding process, because the sidewalls of the coarse grinding blocks 12 are chamfered, the frictional resistance with the ore is reduced, making the grinding process smoother. After preliminary grinding, the ore, under the action of gravity and the force generated during the coarse grinding process, is screened through the coarse grinding arc screen. Mineral powder meeting certain particle size requirements falls into the fine grinding frame 2 below.

[0046] Immediately afterwards, the first drive mechanism 9 starts, and its output end drives the first grinding roller 4 to rotate. The first fixed frame 5 and the multiple sets of fine grinding blocks 6 fixed on it also begin to rotate. The grinding grooves 8 on the surface of the fine grinding blocks 6 cooperate with the arc-shaped grinding strips 7 on the arc-shaped screen 3 to finely grind the mineral powder falling into the fine grinding frame 2. Because the two sides of the arc-shaped grinding strips 7 are chamfered, the mineral powder is less likely to get stuck during the fine grinding process, and the grinding efficiency is further improved. After fine grinding, the mineral powder is screened through the arc-shaped screen 3 and finally collected from the discharge frame 13 at the output port of the fine grinding frame 2, completing the entire mineral powder grinding and discharge process.

[0047] In summary, compared with the prior art, the vertical mill for mineral powder according to the embodiments of this utility model has significant advantages:

[0048] The two-stage grinding structure, which combines coarse and fine grinding, greatly improves the grinding efficiency and precision of mineral powder, resulting in more uniform particle size in the finished mineral powder and meeting higher production requirements.

[0049] The special design of the arc-shaped grinding strips 7 and the fine grinding blocks 6, as well as the chamfered setting of the coarse grinding blocks 12, reduces the resistance of mineral powder during the grinding process, improving the stability and service life of the equipment. This also reduces maintenance costs and downtime.

[0050] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0052] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A vertical mill for mineral powder, characterized in that, include: Equipment frame (1); fine grinding frame (2), the fine grinding frame (2) is fixed to the surface of the equipment frame (1); fine grinding arc screen (3), the fine grinding arc screen (3) is fixed to the inner wall of the fine grinding frame (2); first grinding roller (4), the first grinding roller (4) is rotatably connected to the inside of the fine grinding frame (2); first fixing frame (5), the first fixing frame (5) is fixed to the outer wall of the first grinding roller (4); fine grinding blocks (6), the number of fine grinding blocks (6) is multiple sets, the... Fine grinding blocks (6) are fixed on the outer wall of the first fixed frame (5). Multiple sets of fine grinding blocks (6) are arranged in a ring array. Multiple sets of arc-shaped grinding strips (7) are fixed on the surface of the fine grinding arc screen (3). Grinding grooves (8) adapted to the arc-shaped grinding strips (7) are opened on the surface of the fine grinding blocks (6). A first driving mechanism (9) is fixed on the equipment frame (1). The output of the first driving mechanism (9) is connected to one end of the first grinding roller (4).

2. The vertical mill for mineral powder according to claim 1, characterized in that, The two sides of the arc-shaped grinding strip (7) are chamfered.

3. The vertical mill for mineral powder according to claim 1, characterized in that, It also includes a coarse grinding frame (10), which is fixed above the fine grinding frame (2). The inner wall of the coarse grinding frame (10) is fixed with a coarse grinding arc screen. The interior of the coarse grinding frame (10) is rotatably connected with a second grinding roller. The outer wall of the second grinding roller is fixed with a second fixing frame. The outer wall of the second fixing frame is fixed with multiple sets of coarse grinding blocks (12). The equipment frame (1) is fixed with a second driving mechanism (11). The output of the second driving mechanism (11) is connected to one end of the second grinding roller. The aperture of the coarse grinding arc screen is larger than the aperture of the fine grinding arc screen (3).

4. The vertical mill for mineral powder according to claim 3, characterized in that, The sidewalls of both the fine grinding block (6) and the coarse grinding block (12) are chamfered.

5. The vertical mill for mineral powder according to claim 3, characterized in that, It also includes a discharge frame (13), which is fixed to the output port of the fine grinding frame (2).

6. The vertical mill for mineral powder according to claim 3, characterized in that, It also includes a feed hopper (14), which is fixed to the input port of the coarse grinding frame (10).

Images