Auxiliary replacement device for scraper of coal mill

Abstract

The utility model discloses a coal mill scraper blade auxiliary replacing device which comprises a base, supporting plates, supporting rods, a rotating disc, a gear, a rack and the like, the two supporting plates are arranged on the base, each supporting plate is provided with a containing groove, the supporting rods are arranged in the containing grooves, rotating rods are rotationally installed on the supporting rods, the rotating disc and a circular plate are installed at the two ends of each rotating rod respectively, and the gear and the rack are arranged on the rotating disc. A handle is installed on the rotating disc, a large inner pipe and a small inner pipe are arranged on the base, the large inner pipe and the small inner pipe are sleeved with a large sleeve and a small sleeve respectively, and the tops of the large inner pipe and the small inner pipe are jointly connected with a replacement plate. The operation handle is pressed downwards to drive the rotating disc and the circular plate to rotate, the lifting assembly is matched for lifting, after the lifting assembly reaches a proper position, the limiting assembly fixes the lifting assembly, and replacement of the scraping plate is facilitated; after replacement is completed, other parts are recovered through the limiting assembly, and next replacement of the scraper blade is facilitated; replacement is assisted through the tool support, manual replacement of the scraper blade in a narrow area is avoided, the situation that an operator is strained is prevented, and safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of coal mill technology, and in particular to an auxiliary replacement device for coal mill scrapers. Background Technology

[0002] Coal mills are equipment used in thermal power plants and other industrial fields to grind coal powder into combustible materials. Their performance directly affects combustion efficiency and emission standards. Coal mills reduce the particle size of coal lumps to the required range through mechanical crushing to facilitate the subsequent combustion process. The interior of a coal mill is divided into several key components, among which the scraper is a very important part. It is responsible for scraping the ground coal powder off the surface of the grinding disc to ensure the normal operation and high efficiency of the mill.

[0003] As an important component of the coal mill, the scraper's main function is to maintain a uniform distribution of coal powder on the surface of the grinding disc and to remove coal powder from the grinding disc in a timely manner, so as to avoid a decrease in mill efficiency, an increase in energy consumption, or even failure due to coal powder accumulation. Therefore, the service life and replacement cycle of the scraper have a direct impact on the overall operating efficiency of the coal mill.

[0004] The space inside a coal mill is relatively narrow. If it is necessary to replace the coal mill scraper, the replacement work is relatively difficult to carry out due to the space limitation, and the operator's activities are greatly restricted. The scraper is usually made of wear-resistant materials and is relatively heavy. When the scraper is lifted and replaced by hand in the narrow space, it is easy to cause worker fatigue and injury. Moreover, the replacement operation is difficult and the work efficiency is low.

[0005] To address this issue, an auxiliary replacement device for coal mill scrapers is proposed to solve the problems existing in the prior art. Utility Model Content

[0006] The purpose of this utility model is to address the aforementioned problems by providing an auxiliary replacement device for coal mill scrapers. This utility model involves pressing down the operating handle to rotate the rotating disc and circular plate, which, in conjunction with the lifting assembly, are raised and lowered to the appropriate position. Once the desired position is reached, a limiting assembly secures the scraper, facilitating replacement. After replacement, the limiting assembly restores other components, making subsequent scraper replacements easier. The tool-assisted replacement effectively assists operators in lifting the scraper to its installation position within the confined space of the coal mill, avoiding manual scraper replacement, preventing operator fatigue, improving safety, and increasing work efficiency. To achieve the above-mentioned utility model objectives, the technical solution adopted is as follows:

[0007] According to one aspect of this utility model, a scraper auxiliary replacement device for a coal mill is provided, comprising a base, two support plates spaced apart on the base, each support plate having a placement groove, and a support rod being disposed in both placement grooves, a rotating rod being rotatably mounted on the support rod, a rotating disk and a circular plate being respectively mounted at both ends of the rotating rod, a handle being mounted on the outer circumference of the rotating disk, the handle being cylindrical, a large inner tube and a small inner tube spaced apart on the base, and a large sleeve and a small sleeve being respectively fitted over the large inner tube and the small inner tube, the top of the large sleeve and the small sleeve being connected to a replacement plate, a lifting assembly cooperating between the circular plate and the large sleeve, and a limiting assembly between the two support plates.

[0008] Preferably, the distance between the large inner tube and the small inner tube is less than the distance between the two support plates, the lifting assembly includes a plurality of gear teeth evenly arranged on the circular plate, the large sleeve is provided with a rack on the outer circumferential surface near the circular plate, and the plurality of gear teeth mesh with the rack.

[0009] Preferably, the limiting component includes a connecting rod disposed at the lower end between the two support plates, a round tube sleeved on the connecting rod, and a limiting plate disposed on the round tube, an inclined plate disposed on the base, and a limiting spring disposed between the inclined plate and the limiting plate.

[0010] Preferably, the inner tube and the sleeve are provided with a through hole at the same height, and a pin is provided in the through hole.

[0011] Preferably, an identification plate is provided between the circular plate and the rotating disk, and the identification plate has multiple identification holes.

[0012] Preferably, the base has a pressure-stabilizing area on the side away from the support plate.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0014] The present invention discloses a scraper replacement auxiliary device for a coal mill. By pressing down the operating handle, the rotating disk and circular plate are driven to rotate, and the lifting assembly is used to raise and lower them to a suitable position. After reaching the appropriate position, the limiting assembly fixes them in place, facilitating scraper replacement. After replacement, the limiting assembly restores other components, making it convenient for the next scraper replacement. With the tool support assisting in replacement, it can effectively help operators lift the scraper to the designated position in narrow areas, avoiding manual scraper replacement in narrow areas, preventing operator fatigue, and improving safety. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention;

[0016] Figure 2 This is a utility model Figure 1 Rear view;

[0017] Figure 3 This is a diagram showing the state of the utility model after it has been raised;

[0018] Figure 4 This is an exploded view of the present invention;

[0019] In the attached diagram: 1. Base; 2. Support plate; 3. Placement slot; 4. Support rod; 5. Rotating rod; 6. Rotating disk; 7. Circular plate; 8. Handle; 9. Large inner tube; 10. Small inner tube; 11. Large sleeve; 12. Small sleeve; 13. Replacement plate; 14. Gear tooth; 15. Rack; 16. Connecting rod; 17. Circular tube; 18. Limiting plate; 19. Inclined plate; 20. Limiting spring; 21. Through hole; 22. Pin; 23. Marking plate; 24. Marking hole; 25. Pressure stabilizing area. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many details listed in the specification are merely to provide the reader with a thorough understanding of one or more aspects of the utility model, and these aspects can be achieved even without these specific details.

[0021] Please see Figures 1 to 3 This utility model provides an auxiliary replacement device for coal mill scrapers, the technical solution of which is as follows:

[0022] The system includes a base 1, on which two support plates 2 are spaced apart. Each support plate 2 has a placement groove 3, and a support rod 4 is provided in both placement grooves 3. A rotating rod 5 is rotatably mounted on the support rod 4. A rotating disk 6 and a circular plate 7 are respectively installed at both ends of the rotating rod 5. A handle 8 is installed on the outer circumference of the rotating disk 6, and the handle 8 is cylindrical. A large inner tube 9 and a small inner tube 10 are spaced apart on the base 1, and a large sleeve 11 and a small sleeve 12 are respectively fitted over the large inner tube 9 and the small inner tube 10. A replacement plate 13 is connected to the top of the large sleeve 11 and the small sleeve 12. A lifting assembly is provided between the circular plate 7 and the large sleeve 11, and a limiting assembly is provided between the two support plates 2.

[0023] The scraper blades of the coal mill are heavy, and replacing them in the narrow space inside the mill is quite troublesome, greatly limiting the operator's capabilities. The entire auxiliary device is lightweight and movable. Before replacing the scraper blade, the auxiliary device is moved to the predetermined position. Then, the operator grasps the handle 8 and rotates it downwards. This rotates the disc 6 and the rod 5, causing the circular plate 7 to rotate. In conjunction with the lifting assembly, the large sleeve 11 and the small sleeve 12 are moved upwards, simultaneously moving the replacement plate 13 upwards to the appropriate position. After moving to the appropriate position, the limiting assembly restricts and fixes the replacement plate 13, facilitating the replacement of the scraper blade. After the replacement is completed, the limiting assembly is used to restore the other components, making it convenient for the next scraper blade replacement.

[0024] The distance between the large inner tube 9 and the small inner tube 10 is less than the distance between the two support plates 2, that is, the large inner tube 9 and the small inner tube 10 are located between the two support plates 2, ensuring that the rack 15 can mesh with the multiple gear teeth 14 on the circular plate 7; the lifting assembly includes multiple gear teeth 14 evenly arranged on the circular plate 7, and the large sleeve 11 is provided with a rack 15 on the outer circumferential surface near the circular plate 7, and the multiple gear teeth 14 mesh with the rack 15; the operator rotates the handle 8 downwards, which drives the circular plate 7 to rotate through the rotating disk 6 and the rotating rod 5, that is, the large sleeve 11 is driven to move upwards through the meshing of the multiple gear teeth 14 and the rack 15. After moving to the appropriate position, the handle 8 is released, and under the action of the limiting assembly, the multiple gear teeth 14 are locked, fixing the replacement plate 13 at the appropriate height, and then the scraper is replaced.

[0025] The limiting component includes a connecting rod 16 disposed at the lower end between the two support plates 2, a round tube 17 sleeved on the connecting rod 16, and a limiting plate 18 disposed on the round tube 17. An inclined plate 19 is disposed on the base 1, and a limiting spring 20 is disposed between the inclined plate 19 and the limiting plate 18.

[0026] The limiting plate 18 is restricted by the inclined plate 19 and the limiting spring 20. Combined with the tilt direction of the limiting plate 18, it acts as a pawl. When the operator grips the handle 8 and rotates it downwards, the circular plate 7 drives multiple gear teeth 14 to rotate. The limiting plate 18 does not interfere with this process. However, after the circular plate 7 stops rotating, the limiting plate 18 is locked between two adjacent gear teeth 14, preventing the circular plate 7 from rotating back, thus achieving a restrictive and fixing effect. When resetting is required, the limiting plate 18 is manually pressed, squeezing the limiting spring 20 and disengaging the limiting plate 18 from the gear teeth 14. Then, under the combined action of the rack 15 and gravity, multiple gear teeth 14 and the circular plate 7 rotate in the opposite direction, restoring the original state and preparing for the next lifting operation. This improves the stability and convenience of the entire auxiliary lifting mechanism.

[0027] The small inner tube 10 and the small sleeve 12 are provided with through holes 21 at the same height, and a pin 22 is provided in the through hole 21. In order to prevent someone from accidentally touching the handle 8 and operating the auxiliary device when not in use, the through hole 21 and the pin 22 are provided. When in use, the pin 22 is pulled out. When not in use, the auxiliary device is restored to its original state and the pin 22 is inserted into the two through holes 21 to avoid the above situation and improve safety.

[0028] A marker plate 23 is provided between the circular plate 7 and the rotating disk 6, and multiple marker holes 24 are provided on the marker plate 23. The marker plate 23 and the marker holes 24 are used to indicate the distance and height. For example, each marker hole 24 represents 1 cm. Starting from the initial state of the marker plate 23, by observing how many marker holes 24 have been passed, it is possible to know how much the height has increased, which is convenient for operators to judge and improves accuracy.

[0029] The base 1 has a pressure stabilizing area 25 on the side away from the support plate 2. Before the operator performs the lifting operation, the operator can apply force to the pressure stabilizing area 25 by using a heavy object or stepping on it to increase the stability of the auxiliary device and prevent the entire device from shaking during operation, thereby improving stability.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A scraper auxiliary replacement device for a coal mill, characterized in that, include: The base (1) has two support plates (2) spaced apart. Each support plate (2) has a placement slot (3) and a support rod (4) is provided in both placement slots (3). A rotating rod (5) is rotatably installed on the support rod (4). A rotating disk (6) and a circular plate (7) are respectively installed at both ends of the rotating rod (5). A handle (8) is installed on the outer circumference of the rotating disk (6) and the handle (8) is cylindrical. A large inner tube (9) and a small inner tube (10) are spaced apart on the base (1). A large sleeve (11) and a small sleeve (12) are respectively fitted on the outside of the large inner tube (9) and the small inner tube (10). A replacement plate (13) is connected to the top of the large sleeve (11) and the small sleeve (12). A lifting component is provided between the circular plate (7) and the large sleeve (11). A limiting component is provided between the two support plates (2).

2. The auxiliary replacement device for a coal mill scraper according to claim 1, characterized in that: The distance between the large inner tube (9) and the small inner tube (10) is less than the distance between the two support plates (2). The lifting assembly includes a plurality of gear teeth (14) evenly arranged on the circular plate (7). The large sleeve (11) is provided with a rack (15) on the outer circumferential surface near the circular plate (7), and the plurality of gear teeth (14) mesh with the rack (15).

3. The auxiliary replacement device for a coal mill scraper according to claim 1, characterized in that: The limiting component includes a connecting rod (16) disposed at the lower end between two support plates (2), a round tube (17) sleeved on the connecting rod (16), and a limiting plate (18) disposed on the round tube (17). An inclined plate (19) is disposed on the base (1), and a limiting spring (20) is disposed between the inclined plate (19) and the limiting plate (18).

4. The auxiliary replacement device for a coal mill scraper according to claim 1, characterized in that: The small inner tube (10) and the small sleeve (12) are provided with through holes (21) at the same height, and a pin (22) is provided in the through hole (21).

5. The auxiliary replacement device for a coal mill scraper according to claim 2, characterized in that: A marking plate (23) is provided between the circular plate (7) and the rotating disk (6), and a plurality of marking holes (24) are provided on the marking plate (23).

6. The auxiliary replacement device for a coal mill scraper according to claim 1, characterized in that: The base (1) has a pressure stabilizing area (25) on the side away from the support plate (2).

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