A device for continuously stabilizing the material layer of a vertical mill grinding table

Abstract

This utility model relates to the field of vertical mill technology, and in particular to a device for continuously stabilizing the material layer on a vertical mill disc. It includes a mill disc body and multiple grinding rollers disposed inside the mill disc body. A material-throwing device installed at the top of the mill disc body is provided between the multiple grinding rollers. The material-throwing device includes an outer ring fixedly connected to the top of the mill disc body. In this utility model, the material-throwing device, outer ring, inner ring, connecting plate, support ring, and support plate form a radially shaped partition extending from the center of the mill disc to the edge. This design can push the material, making the material move faster and more evenly towards the edge of the mill disc body. Compared with the traditional mill disc body structure, the material distribution on the mill disc body is more uniform, avoiding localized material accumulation or insufficient material, providing a more stable material layer foundation for subsequent grinding roller compaction. The stable material layer reduces abnormal wear between the grinding rollers and the mill disc, saving energy.

Description

Technical Field

[0001] This utility model relates to the field of vertical mill technology, specifically to a device for continuously stabilizing the material layer on the grinding disc of a vertical mill. Background Technology

[0002] In modern industrial production, vertical mills, as a highly efficient grinding equipment, are widely used in many industries such as cement, power, metallurgy, and chemical industry. The core structure of a vertical mill includes a rotating grinding disc, hydraulically driven grinding rollers, and a high-efficiency classifier. It achieves efficient crushing of materials through the principle of material layer grinding.

[0003] The working efficiency and product quality of a vertical mill largely depend on the stability of the material layer on the grinding disc. An unstable material layer will cause the grinding rollers to fluctuate frequently, which will not only reduce grinding efficiency, but also increase equipment wear and energy consumption. Therefore, a device for continuously stabilizing the material layer on the grinding disc of a vertical mill is proposed to address the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a device for continuously and stably maintaining the material layer on the grinding disc of a vertical mill, so as to solve the problem of unstable material layer in existing devices mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A device for continuously stabilizing the material layer on a vertical mill disc includes a mill disc body and multiple grinding rollers disposed inside the mill disc body. A material-throwing device is provided between the multiple grinding rollers and installed at the top of the mill disc body. The material-throwing device includes an outer ring fixedly connected to the top of the mill disc body, an inner ring fixedly connected to the top of the mill disc body inside the outer ring, and multiple connecting plates fixedly connected to the top of the mill disc body between the outer ring and the inner ring. A support ring is provided above the mill disc body, and multiple support plates are fixedly connected to the inner side of the support ring. A scraping device is installed on one side of the support plate.

[0006] Preferably, the scraping device includes a mounting bolt fixedly connected to one side of the support plate, a mounting nut threadedly connected to the outside of the mounting bolt, a limiting block fixedly connected to one side of the support plate symmetrically provided on the outside of the mounting bolt, a scraper provided on the outside of the limiting block, and multiple through grooves opened inside the scraper.

[0007] Preferably, the mounting nut is in close contact with the scraper on the side closest to the scraper, and the mounting bolt and the limiting block are located inside the multiple grooves respectively.

[0008] Preferably, the chute has symmetrical connecting holes on one side, which are opened inside the scraper and penetrate the scraper. A connecting rod is inserted into the inside of the connecting hole, and a threaded cylinder is fixedly connected between the two connecting rods. A positioning bolt is threadedly connected to the inside of the threaded cylinder.

[0009] Preferably, the inner side of the connecting hole and the outer side of the connecting rod are in contact with each other, and the bottom end of the positioning bolt is in contact with the top end of the support plate.

[0010] Compared with the prior art, the beneficial effects of this utility model are: 1. In this utility model, a radial partition is formed by setting a material throwing device, an outer ring, an inner ring, a connecting plate, a support ring, and a support plate, extending from the center of the grinding disc to the edge. This design can push the material, making the material move faster and more evenly towards the edge of the grinding disc body. Compared with the traditional grinding disc body structure, the material is more evenly distributed on the grinding disc body, avoiding local material accumulation or insufficient material, and providing a more stable material layer foundation for subsequent grinding roller crushing. The stable material layer reduces abnormal wear between the grinding roller and the grinding disc, saving energy. 2. In this utility model, through the setting of scraping device, mounting bolts, mounting nuts, limiting blocks, scrapers, grooves, connecting holes, connecting rods, threaded cylinders, and positioning bolts, when there is material that exceeds the material retaining ring, the rotating scraper can scrape this material that exceeds the material retaining ring to a position lower than the material retaining ring. In this way, it can not only replenish the area with less material on the grinding disc body, but also make the material height on the entire grinding disc body more uniform, thereby promoting the stability of the material layer on the grinding disc body, effectively reducing the frequency of the up and down undulation of the grinding roller, so that the grinding roller can apply pressure to the material on the grinding disc body more stably and improve the grinding efficiency. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the support plate and its connecting components of this utility model; Figure 3 This is a schematic diagram of the scraper installation structure of this utility model; Figure 4 This is a schematic diagram of the material throwing device of this utility model.

[0012] In the diagram: 1. Grinding disc body; 2. Grinding roller; 3. Material throwing device; 31. Outer ring; 32. Inner ring; 33. Connecting plate; 4. Support ring; 5. Support plate; 6. Scraping device; 61. Mounting bolt; 62. Mounting nut; 63. Limiting block; 64. Scraper; 65. Slide groove; 7. Connecting hole; 8. Connecting rod; 9. Threaded cylinder; 10. Positioning bolt. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0015] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0016] Please see Figure 1-4 This utility model provides a technical solution: A device for continuously stabilizing the material layer on a vertical mill disc includes a mill disc body 1 and multiple grinding rollers 2 disposed inside the mill disc body 1. A material-throwing device 3 is installed at the top of the mill disc body 1 between the multiple grinding rollers 2. The material-throwing device 3 includes an outer ring 31 fixedly connected to the top of the mill disc body 1, an inner ring 32 fixedly connected to the top of the mill disc body 1 inside the outer ring 31, and multiple connecting plates 33 fixedly connected to the top of the mill disc body 1 between the outer ring 31 and the inner ring 32. A support ring 4 is provided above the mill disc body 1, and multiple support plates 5 are fixedly connected to the inner side of the support ring 4. A scraper is installed on one side of each support plate 5. The material feeding device 6, through the material throwing device 3, outer ring 31, inner ring 32, connecting plate 33, support ring 4 and support plate 5, forms a radial baffle extending from the center of the grinding disc to the edge. This design can push the material, making the material move faster and more evenly towards the edge of the grinding disc body 1. Compared with the traditional grinding disc body 1 structure, the material distribution on the grinding disc body 1 is more uniform, avoiding local material accumulation or insufficient material, and providing a more stable material layer foundation for the subsequent grinding roller 2. The stable material layer reduces abnormal wear between the grinding roller 2 and the grinding disc, saving energy consumption.

[0017] The scraping device 6 includes a mounting bolt 61 fixedly connected to one side of the support plate 5. A mounting nut 62 is threaded onto the outer side of the mounting bolt 61. A limiting block 63, symmetrically fixedly connected to one side of the support plate 5, is provided on the outer side of the mounting bolt 61. A scraper 64 is provided on the outer side of the limiting block 63. Multiple grooves 65 penetrating the scraper 64 are provided inside the scraper 64. The side of the mounting nut 62 closest to the scraper 64 is tightly fitted to the scraper 64. The mounting bolt 61 and the limiting block 63 are located inside the multiple grooves 65. A connecting hole 7, symmetrically provided on one side of the groove 65, is opened inside and penetrates the scraper 64. A connecting rod 8 is inserted into the connecting hole 7. A threaded cylinder 9 is fixedly connected between two connecting rods 8. A positioning bolt 10 is threaded onto the inner side of the threaded cylinder 9. The inner side of hole 7 and the outer side of connecting rod 8 are in contact with each other, and the bottom end of positioning bolt 10 is in contact with the top end of support plate 5. Through the set scraping device 6, mounting bolt 61, mounting nut 62, limit block 63, scraper 64, slide groove 65, connecting hole 7, connecting rod 8, threaded cylinder 9 and positioning bolt 10, when there is material that is higher than the baffle ring, the rotating scraper 64 can scrape these materials that are higher than the baffle ring to a position lower than the baffle ring. In this way, it can not only replenish the area with less material on the grinding disc body 1, but also make the material height on the entire grinding disc body 1 more uniform, thereby promoting the stability of the material layer on the grinding disc body 1, effectively reducing the frequency of up and down fluctuation of grinding roller 2, so that grinding roller 2 can apply pressure to the material on grinding disc body 1 more stably and improve grinding efficiency.

[0018] Workflow: Before use, install the various components of the device. First, install the support ring 4 on the outside of the grinding disc body 1. Then, install the scraper 64, placing it outside the limiting block 63 and the mounting bolt 61. Move the scraper 64 so that the slide groove 65 slides relative to the limiting block 63 until the bottom of the scraper 64 is horizontally aligned with the top of the baffle ring on the outer side of the top of the grinding disc body 1. At this point, rotate the mounting nut 62 on the outside of the mounting bolt 61 to make the mounting nut 62 fit tightly against the baffle. Next, insert the connecting rod 8 into the connecting hole 7 and rotate the positioning bolt 10 on the inside of the threaded cylinder 9 to make the bottom of the positioning bolt 10 fit against the top of the support plate 5. This completes the scraping device installation. The vertical mill, consisting of a grinding disc body 1, grinding rollers 2, a baffle ring, a classifier, an air ring, and a pressurizing device, is mainly composed of these components. During operation, the main motor drives the grinding disc body 1 to rotate via a reducer. Material falls from the feed inlet to the center of the grinding disc body 1. The centrifugal force generated by the rotation of the grinding disc body 1 causes the material to disperse and flatten evenly outward, forming a material bed of a certain thickness. Simultaneously, the grinding rollers 2, under the action of the pressurizing device, crush the material on the material bed. Driven by centrifugal force, the crushed material moves towards the outer edge of the grinding disc body 1. Upon encountering the hot gas entering the grinding disc body 1 from the air ring, it is carried by the airflow to the classifier. In the classifier, materials meeting the fineness requirements are separated... The selected material is used as the finished product, while the coarse powder is returned to the grinding disc body 1 for re-grinding. When the grinding disc body 1 rotates at high speed, under the action of centrifugal force, the material moves towards the edge of the grinding disc body 1. The outer ring 31, inner ring 32, and connecting plate 33 welded to the grinding disc body 1 form a radial baffle extending from the center of the grinding disc to the edge. The material throwing device 3 can push the material, making the material move towards the edge of the grinding disc body 1 faster and more evenly. Compared with the traditional grinding disc body 1 structure, the material distribution on the grinding disc body 1 is more uniform, avoiding local material accumulation or insufficient material, providing a more stable material layer foundation for the subsequent grinding roller 2. A stable material layer reduces This reduces abnormal wear between the grinding roller 2 and the grinding disc, saving energy. During the rotation of the grinding disc body 1, the material height on the grinding disc body 1 may be uneven due to various factors. When material exceeds the baffle ring, the rotating scraper 64 can scrape this material below the baffle ring. This not only replenishes the areas with less material on the grinding disc body 1, but also makes the material height on the entire grinding disc body 1 more uniform, thereby promoting the stability of the material layer on the grinding disc body 1. In this way, the frequency of the up-and-down fluctuation of the grinding roller 2 is effectively reduced, allowing the grinding roller 2 to apply pressure to the material on the grinding disc body 1 more stably and improving grinding efficiency.

[0019] Contents not described in detail in this specification are existing technologies known to those skilled in the art. Standard parts used in this invention can all be purchased commercially, and irregularly shaped parts can be custom-made according to the description and drawings. The specific connection methods for each part all employ conventional methods such as bolts, rivets, and welding, which are already mature technologies. The machinery, parts, and equipment all use conventional models from the prior art, and the circuit connections also employ conventional connection methods from the prior art, which will not be detailed here.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for continuously stabilizing the material layer on a vertical mill disc, comprising a mill disc body (1) and a plurality of grinding rollers (2) disposed inside the mill disc body (1), characterized in that: A material-throwing device (3) is provided between the multiple grinding rollers (2) and installed at the top of the grinding disc body (1). The material-throwing device (3) includes an outer ring (31) fixedly connected to the top of the grinding disc body (1), and an inner ring (32) fixedly connected to the top of the grinding disc body (1) on the inner side of the outer ring (31). Multiple connecting plates (33) fixedly connected to the top of the grinding disc body (1) are fixedly connected between the outer ring (31) and the inner ring (32). A support ring (4) is provided above the grinding disc body (1). Multiple support plates (5) are fixedly connected to the inner side of the support ring (4). A scraping device (6) is installed on one side of the support plate (5).

2. The device for continuously stabilizing the material layer on a vertical mill disc according to claim 1, characterized in that: The scraping device (6) includes a mounting bolt (61) fixedly connected to one side of the support plate (5), a mounting nut (62) threadedly connected to the outside of the mounting bolt (61), a limiting block (63) fixedly connected to one side of the support plate (5) symmetrically provided on the outside of the mounting bolt (61), a scraper (64) provided on the outside of the limiting block (63), and a plurality of grooves (65) penetrating the scraper (64) are provided inside the scraper (64).

3. The device for continuously stabilizing the material layer on a vertical mill disc according to claim 2, characterized in that: The mounting nut (62) is in close contact with the scraper (64) on the side near the scraper (64), and the mounting bolt (61) and the limiting block (63) are located inside the multiple grooves (65) respectively.

4. A device for stabilizing a material layer on a grinding table of a roller mill according to claim 3, characterized in that: The chute (65) is symmetrically provided with connecting holes (7) inside the scraper (64) and through the scraper (64) on one side. A connecting rod (8) is inserted into the connecting hole (7). A threaded cylinder (9) is fixedly connected between the two connecting rods (8). A positioning bolt (10) is threadedly connected to the inside of the threaded cylinder (9).

5. The device for continuously stabilizing the material layer on a vertical mill disc according to claim 4, characterized in that: The inner side of the connecting hole (7) and the outer side of the connecting rod (8) are in contact with each other, and the bottom end of the positioning bolt (10) is in contact with the top end of the support plate (5).

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