Coal mill with grinding disc convenient to replace

Abstract

The utility model provides a coal mill with a grinding disc convenient to replace, which relates to the technical field of coal mills and comprises a coal mill body, a support frame and a slide plate, the support frame is arranged on one side of the coal mill body, sliding blocks are arranged on two sides in the support frame in a sliding manner, and the sliding blocks are driven by a driving part to move. The upper end of the slide plate is hinged in front of the two groups of sliding blocks, and the upper end of the slide plate faces a maintenance opening of the coal mill body; elastic stretching rods are hinged to the lower portions of the two ends of one side of the supporting frame. The slide block moves downwards along the supporting frame, the slide plate can be driven to move downwards, the slide plate is inclined by being matched with the downward rotating and stretching effects of hinged connection of the elastic stretching rod, the upper end of the slide plate faces the maintenance opening of the coal mill body, sliding discharging is facilitated after a millstone topples over, use is convenient, manual direct carrying is not needed, and the labor intensity of workers is lowered. The injury probability of staff is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of coal mill technology, and in particular to a coal mill with a convenient grinding disc replacement. Background Technology

[0002] Medium-speed coal mills are coal processing equipment with operating speeds between 50 and 300 rpm. Their core function is to transform lumpy coal into fine powder through extrusion, grinding, and drying. They are widely used in power generation, metallurgy, building materials, and chemical industries. In coal-fired power generation, they serve as a key auxiliary machine, improving combustion efficiency and reducing emissions through high-efficiency grinding. The metallurgical industry relies on them to produce coke for smelting. In the building materials sector, they are used for pulverized coal preparation in cement production. The equipment crushes coal through the relative motion of the grinding disc and rollers, and achieves drying and fineness classification with a hot air system. It features a compact structure, low power consumption, low noise, and stable operation, making it particularly suitable for large-scale pulverization needs and a crucial piece of equipment for efficient coal utilization.

[0003] Medium-speed coal mills operate continuously for extended periods, constantly subjected to friction and compression from materials with high hardness. During grinding, these materials generate continuous friction and impact on the grinding disc. Inappropriate grinding pressure can increase the friction between the disc and the material, and insufficient wear resistance of the disc material itself ultimately leads to severe wear and replacement of the grinding disc. Currently, replacing the old grinding disc requires using appropriate lifting equipment to hoist it, and personnel then use a support frame to push it into the mill. Previously, manually removing the old disc was risky and could cause injury. Therefore, this invention proposes a coal mill with a convenient grinding disc replacement mechanism to address the problems in the existing technology. Utility Model Content

[0004] To address the aforementioned problems, this utility model proposes a coal mill with an easy-to-change grinding disc. This easy-to-change grinding disc coal mill is convenient to use, requires no manual handling, reduces the probability of employee injury, and improves work efficiency.

[0005] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a coal mill that facilitates the replacement of the grinding disc, including a coal mill body, a support frame and a slide plate. The support frame is provided on one side of the coal mill body. Sliding blocks are slidably provided on both sides inside the support frame, and the sliding blocks are driven to move by a drive unit. The upper end of the slide plate is hinged in front of the two sets of sliding blocks, and the upper end of the slide plate faces the maintenance port of the coal mill body.

[0006] Elastic tension rods are hinged to the lower ends of both sides of one side of the support frame, and one end of each set of elastic tension rods is hinged to the lower ends of both sides of the slide board.

[0007] A further improvement is that a connecting column is provided on the lower side of one side of the support frame, and the connecting column is connected to the coal mill body.

[0008] A further improvement is that the drive unit includes a threaded screw and a motor, and the support frame has inner grooves on both sides. The threaded screw is rotatably located inside the inner groove, the motor is located above the support frame, and the output end of the motor is connected to the threaded screw. The threaded screw passes through the slider and is threadedly adapted.

[0009] A further improvement is that: the inner side of both sets of sliders is provided with a hinge shaft, and the upper end of the slide plate is hinged to the two sets of hinge shafts.

[0010] A further improvement is that the elastic tension rod includes an outer tube and an inner rod, the inner rod is movably inserted inside the outer tube, and one end of the inner rod is provided with a limiting plate, and a tension spring is connected between the limiting plate and one end inside the outer tube.

[0011] A further improvement is that: a hinge plate is provided below both ends of one side of the support frame, one end of the outer sleeve is hinged to the hinge plate, and the end of the inner rod away from the outer sleeve is provided with a hinge joint, which is hinged to the slide plate.

[0012] A further improvement is that the surface of the slide board is covered with an grease film, and baffles are provided on both sides of the slide board.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This utility model uses a slider to move downward along the support frame, which can drive the slide plate downward. Combined with the hinged connection of the elastic tension rod, the slide plate rotates downward and has a tensioning effect, causing the slide plate to tilt. The upper end of the slide plate faces the maintenance port of the coal mill body, which facilitates the sliding and unloading of materials after the grinding disc is tilted. It is easy to use, does not require direct manual handling, reduces the probability of employee injury, and improves work efficiency.

[0015] 2. When this utility model is not in use, the drive slider moves upward, causing the slide board to move upward. The elastic tension rod rotates upward and retracts and resets under its own elasticity, making the slide board tend to be vertical, thereby saving storage space. Attached Figure Description

[0016] Figure 1 This is the front view of the present invention;

[0017] Figure 2 This is a schematic diagram of the support frame structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the elastic tension rod of this utility model.

[0019] The components are: 1. Coal mill body; 2. Support frame; 3. Slide plate; 4. Slider; 5. Elastic tension rod; 6. Connecting column; 7. Threaded screw; 8. Motor; 9. Hinge shaft; 10. Outer tube; 11. Inner rod; 12. Limiting plate; 13. Tension spring; 14. Hinge plate; 15. Hinge joint; 16. Baffle. Detailed Implementation

[0020] To deepen the understanding of this utility model, the following detailed description will be provided in conjunction with embodiments. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0021] Example 1

[0022] according to Figure 1 , 2 As shown in Figure 3, this embodiment proposes a coal mill that facilitates the replacement of the grinding disc, including a coal mill body 1, a support frame 2, and a slide plate 3. The support frame 2 is located on one side of the coal mill body 1. Sliding blocks 4 are slidably provided on both sides inside the support frame 2, and the sliding blocks 4 are driven to move by a drive unit. The upper end of the slide plate 3 is hinged in front of the two sets of sliding blocks 4, and the upper end of the slide plate 3 faces the maintenance port of the coal mill body 1.

[0023] Elastic tension rods 5 are hinged to the lower ends of both sides of one side of the support frame 2, and one end of each set of elastic tension rods 5 is hinged to the lower ends of both sides of the slide plate 3. In use, the slider 4 moves downwards along the support frame 2, causing the slide plate 3 to move downwards. Combined with the hinged connection and downward rotation of the elastic tension rods 5, and the stretching action, the slide plate 3 tilts, with its upper end facing the maintenance opening of the coal mill body 1. This facilitates sliding and unloading of materials after the grinding disc is tilted, making it convenient to use without manual handling, reducing the probability of employee injury and improving work efficiency. When not in use, the slider 4 is driven upwards, causing the slide plate 3 to move upwards. The elastic tension rods 5 rotate upwards and retract under their own elasticity, causing the slide plate 3 to tend towards verticality, thus saving storage space.

[0024] A connecting column 6 is provided on the lower side of one side of the support frame 2, and the connecting column 6 is connected to the coal mill body 1. The relative positions of the support frame 2 and the coal mill body 1 are fixed by the connecting column 6.

[0025] The drive unit includes a threaded screw 7 and a motor 8. The support frame 2 has inner grooves on both sides. The threaded screw 7 is rotatably disposed within the inner groove, and the slider 4 slides synchronously within the inner groove. The motor 8 is located above the support frame 2, and its output end is connected to the threaded screw 7. The threaded screw 7 passes through the slider 4 and is threadedly fitted. Both sets of sliders 4 have hinge shafts 9 on their inner sides, and the upper end of the slide plate 3 is hinged to both sets of hinge shafts 9. In use, the motor 8 drives the threaded screw 7 to rotate, using the threaded action to drive the slider 4 to move along the inner groove, thereby changing the height of the slide plate 3. During the height change, the slide plate rotates and tilts based on the hinge shafts 9.

[0026] The elastic tension rod 5 includes an outer tube 10 and an inner rod 11. The inner rod 11 is movably inserted inside the outer tube 10, and one end of the inner rod 11 is provided with a limiting plate 12. A tension spring 13 is connected between the limiting plate 12 and one end inside the outer tube 10. Hinges 14 are provided below both ends of one side of the support frame 2. One end of the outer tube 10 is hinged to the hinge plate 14. The end of the inner rod 11 away from the outer tube 10 is provided with a hinge joint 15, which is hinged to the slide plate 3. In use, the inner rod 11 moves inside the outer sleeve 10 to achieve the purpose of extension and retraction. Through the action of the tension spring 13, the elastic tension rod 5 retracts and resets without external force. The slider 4 moves downward along the support frame 2, which can drive the slide plate 3 to move downward. In conjunction with the downward rotation and tension of the elastic tension rod 5 based on the hinge connection of the hinge plate 14 and the hinge connection of the hinge joint 15, the slide plate 3 is tilted, with the upper end of the slide plate 3 facing the maintenance port of the coal mill body 1, which facilitates the sliding and unloading of materials after the grinding disc is tilted. When not in use, the slider 4 is driven to move upward, which drives the slide plate 3 to move upward. The elastic tension rod 5 rotates upward and retracts and resets under its own elasticity, making the slide plate 3 tend to be vertical, thereby saving storage space.

[0027] Example 2

[0028] according to Figure 1 , 2 As shown in Figure 3, this embodiment proposes a coal mill that facilitates the replacement of the grinding disc, including a coal mill body 1, a support frame 2, and a slide plate 3. The support frame 2 is located on one side of the coal mill body 1. Sliding blocks 4 are slidably provided on both sides inside the support frame 2, and the sliding blocks 4 are driven to move by a drive unit. The upper end of the slide plate 3 is hinged in front of the two sets of sliding blocks 4, and the upper end of the slide plate 3 faces the maintenance port of the coal mill body 1.

[0029] Elastic tension rods 5 are hinged to the lower ends of both sides of one side of the support frame 2, and one end of each set of elastic tension rods 5 is hinged to the lower ends of both sides of the slide plate 3. In use, the slider 4 moves downwards along the support frame 2, causing the slide plate 3 to move downwards. Combined with the hinged connection and downward rotation of the elastic tension rods 5, and the stretching action, the slide plate 3 tilts, with its upper end facing the maintenance opening of the coal mill body 1. This facilitates sliding and unloading of materials after the grinding disc is tilted, making it convenient to use without manual handling, reducing the probability of employee injury and improving work efficiency. When not in use, the slider 4 is driven upwards, causing the slide plate 3 to move upwards. The elastic tension rods 5 rotate upwards and retract under their own elasticity, causing the slide plate 3 to tend towards verticality, thus saving storage space.

[0030] A connecting column 6 is provided on the lower side of one side of the support frame 2, and the connecting column 6 is connected to the coal mill body 1. The relative positions of the support frame 2 and the coal mill body 1 are fixed by the connecting column 6.

[0031] The surface of the slide plate 3 is covered with an oil film, which reduces friction during the sliding process after the grinding disc tilts and the material is fed. Both sides of the slide plate 3 are provided with baffles 16 to limit the sliding grinding disc and prevent it from deviating.

[0032] This coal mill, which facilitates grinding disc replacement, uses a slider 4 to move downwards along the support frame 2, which in turn moves the slide plate 3 downwards. Combined with the hinged connection of the elastic tension rod 5, the downward rotation and tensioning action cause the slide plate 3 to tilt, with its upper end facing the maintenance port of the coal mill body 1. This facilitates material unloading after the grinding disc is tilted, making it convenient to use without manual handling, reducing the probability of employee injury and improving work efficiency. When not in use, driving the slider 4 upwards moves the slide plate 3 upwards, and the elastic tension rod 5 rotates upwards and retracts under its own elasticity, causing the slide plate 3 to tend towards verticality, thus saving storage space.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A coal mill with a convenient grinding disc replacement, comprising a mill body (1), a support frame (2), and a slide plate (3), characterized in that: The support frame (2) is located on one side of the coal mill body (1). Sliding blocks (4) are slidably provided on both sides inside the support frame (2). The sliding blocks (4) are driven to move by the drive unit. The upper end of the slide plate (3) is hinged in front of the two sets of sliding blocks (4), and the upper end of the slide plate (3) faces the maintenance port of the coal mill body (1). Elastic tension rods (5) are hinged to the lower ends of both sides of the support frame (2), and one end of each set of elastic tension rods (5) is hinged to the lower ends of both sides of the slide plate (3).

2. A coal mill with a convenient grinding disc replacement according to claim 1, characterized in that: A connecting column (6) is provided on the lower side of one side of the support frame (2), and the connecting column (6) is connected to the coal mill body (1).

3. A coal mill with a convenient grinding disc replacement according to claim 1, characterized in that: The drive unit includes a threaded screw (7) and a motor (8). The support frame (2) has inner grooves on both sides. The threaded screw (7) is rotatably located inside the inner groove. The motor (8) is located above the support frame (2), and the output end of the motor (8) is connected to the threaded screw (7). The threaded screw (7) passes through the slider (4) and is threadedly adapted.

4. A coal mill with a convenient grinding disc replacement according to claim 1, characterized in that: The inner sides of both sets of sliders (4) are provided with hinge shafts (9), and the upper end of the slide plate (3) is hinged to the two sets of hinge shafts (9).

5. A coal mill with a convenient grinding disc replacement according to claim 1, characterized in that: The elastic tension rod (5) includes an outer tube (10) and an inner rod (11). The inner rod (11) is movably inserted inside the outer tube (10), and a limiting plate (12) is provided at one end of the inner rod (11). A tension spring (13) is connected between the limiting plate (12) and one end inside the outer tube (10).

6. A coal mill with a convenient grinding disc replacement according to claim 5, characterized in that: The support frame (2) has hinge plates (14) at both ends on one side. One end of the outer tube (10) is hinged to the hinge plate (14). The inner rod (11) has a hinge joint (15) at the end away from the outer tube (10), and the hinge joint (15) is hinged to the slide plate (3).

7. A coal mill with a convenient grinding disc replacement according to any one of claims 1-6, characterized in that: The surface of the slide board (3) is covered with an oil film, and baffles (16) are provided on both sides of the slide board (3).

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