Anti-blocking coal dropping pipe of coal mill

Abstract

The utility model discloses an anti-blocking coal dropping pipe of a coal mill, which relates to the technical field of coal dropping pipes and comprises a coal receiving pipe, a rotating mechanism for preventing coal block blockage is arranged on the surface of the coal receiving pipe, and the rotating mechanism comprises a rotating motor, a first rotating rod, a first gear, a second transmission rod, a second gear, a first gear ring, a second gear ring, a coal dropping pipe and a scraper. The output end of the rotating motor drives the first rotating rod to rotate, so that the first gear and the second gear are driven to rotate, the first gear ring and the second gear ring drive the coal falling pipe to rotate, and coal briquettes are prevented from falling to the same position of an inner cavity of the coal falling pipe through rotation of the coal falling pipe; and meanwhile, the coal slag and coal ash attached to the surface of the inner cavity of the coal falling pipe can be scraped by the scraping plate while the coal falling pipe rotates, the coal falling pipe is further prevented from being blocked, meanwhile, the interior of the coal falling pipe is conveniently cleaned in the later period, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of coal chutes technology, specifically a coal mill anti-clogging coal chute. Background Technology

[0002] The coal mill anti-clogging chute is a core device ensuring the efficient and stable operation of the coal milling system, widely used in industries such as power and chemical processing that rely on coal grinding. It acts as a "transportation bridge" between the raw coal bunker and the coal mill, bearing the crucial responsibility of accurately and smoothly guiding raw coal into the mill. Its pipe wall is made of special wear-resistant and anti-sticking materials to reduce raw coal adhesion. The ingeniously designed internal flow guiding structure directs the coal flow evenly and orderly, preventing accumulation, eliminating the risk of blockage, and continuously supplying raw coal to the coal mill, thus maintaining the smooth operation of the production process.

[0003] Patent publication number CN219943132U discloses a coal mill chute unblocking device, comprising multiple unblocking devices that can be detachably connected end to end; each unblocking device includes a support rod, a guide ring coaxially arranged with the support rod, a connecting rod for connecting the guide ring and the support rod, a clamping plate disposed on the side wall of the support rod, and a high-pressure water pipe; the clamping plate is used to clamp the high-pressure water pipe, and one of the support rods is hinged to the adjacent support rod.

[0004] To address the issue of needing to cut open the coal chute to clear blockages of coal dust, but which is difficult to restore after cutting due to the large size of the chute, resulting in a large amount of welding work, low efficiency, and difficulty in quickly restoring the coal mill to standby mode, existing technology involves inserting a drain cleaner into the chute. When the end of the support rod approaches or contacts the blockage, a high-pressure water jet is activated to spray high-pressure water through a high-pressure water pipe, continuously impacting the blockage and clearing it. However, this method still fails to effectively prevent coal accumulation, requiring work to be paused for clearing the blockage, leading to low work efficiency. Therefore, we propose an anti-blockage coal chute for coal mills. Utility Model Content

[0005] The purpose of this utility model is to provide a coal mill anti-clogging coal drop pipe to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a coal mill anti-blocking coal drop pipe, including a coal receiving pipe, wherein the surface of the coal receiving pipe is provided with a rotating mechanism for preventing coal blockage;

[0007] The rotating mechanism includes a rotating motor, a first rotating rod, a first gear, a second transmission rod, a second gear, a first gear ring, a second gear ring, a coal chuting pipe, and a scraper. The output end of the rotating motor is fixedly connected to the upper end of the first rotating rod. The lower end of the first rotating rod is fixedly connected to the top surface of the first gear. The bottom surface of the first gear is fixedly connected to the upper end of the second transmission rod. The lower end of the second transmission rod is fixedly connected to the top surface of the second gear. The surface of the first gear meshes with the surface of the first gear ring. The surface of the second gear meshes with the surface of the second gear ring. The inner ring surface of the first gear ring is fixedly connected to the surface of the coal chuting pipe. The inner ring surface of the second gear ring is fixedly connected to the surface of the coal chuting pipe. The inner cavity surface of the coal chuting pipe is movably connected to the surface of the scraper. The upper end of the coal chuting pipe is rotatably connected to the inner cavity surface of the coal receiving pipe.

[0008] As a further preferred embodiment of this technical solution, a fixing plate is fixedly connected to the surface of the coal receiving pipe, and the bottom surface of the fixing plate is fixedly connected to one end of the rotating motor.

[0009] As a further preferred embodiment of this technical solution, a snap-fit ​​plate is fixedly connected to the inner surface of the coal receiving pipe, and the surface of the snap-fit ​​plate is movably inserted into the surface of the scraper.

[0010] As a further preferred embodiment of this technical solution, the surface of the snap-fit ​​plate is threaded with a bolt, the surface of the bolt is threaded with the upper end of the scraper, and the lower end of the coal drop pipe is rotatably connected with a connecting mechanism.

[0011] As a further preferred embodiment of this technical solution, the connecting mechanism includes a discharge pipe, a sealing strip, and a fixing component. The inner surface of the discharge pipe is rotatably connected to the lower end of the coal chutes, and a sealing strip is provided in the groove on the surface of the discharge pipe.

[0012] As a further preferred embodiment of this technical solution, the surface of the discharge pipe is fixedly connected to a fixing member, and the upper end of the coal drop pipe is rotatably connected to the inner surface of the coal receiving pipe.

[0013] This utility model provides an anti-clogging coal chute for a coal mill, which has the following beneficial effects:

[0014] In this invention, coal blocks slide into the coal chutes through the coal receiving pipe. The output of the rotating motor drives the first rotating rod to rotate, which in turn drives the first and second gears to rotate. This, in turn, drives the coal chutes through the first and second gear rings to rotate. The rotation of the coal chutes prevents the coal blocks from falling to the same position inside the chutes after they have fallen, effectively reducing the risk of blockage. At the same time, as the coal chutes rotate, the scraper can remove coal slag and ash adhering to the surface of the inner cavity of the coal chutes, further preventing blockage and facilitating subsequent cleaning of the inside of the coal chutes, thus improving work efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the three-dimensional structure of this utility model from another perspective;

[0017] Figure 3 This is a schematic diagram of the rotating mechanism structure of this utility model;

[0018] Figure 4 This is a schematic diagram of the connection mechanism structure of this utility model.

[0019] In the diagram: 1. Coal receiving pipe; 2. Rotating mechanism; 21. Fixed plate; 22. Rotating motor; 23. First rotating rod; 24. First gear; 25. Second transmission rod; 26. Second gear; 27. First gear ring; 28. Second gear ring; 29. ​​Coal drop pipe; 201. Clip plate; 202. Scraper; 203. Bolt; 3. Connecting mechanism; 31. Discharge pipe; 32. Sealing strip; 33. Fixing component. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to embodiments:

[0021] Example 1

[0022] like Figure 1-4As shown, this utility model provides a coal mill anti-clogging coal drop pipe, a coal receiving pipe 1, and a rotating mechanism 2 for preventing coal blockage on the surface of the coal receiving pipe 1. The rotating mechanism 2 includes a rotating motor 22, a first rotating rod 23, a first gear 24, a second transmission rod 25, a second gear 26, a first gear ring 27, a second gear ring 28, a coal drop pipe 29, and a scraper 202. The output end of the rotating motor 22 is fixedly connected to the upper end of the first rotating rod 23, the lower end of the first rotating rod 23 is fixedly connected to the top surface of the first gear 24, the bottom surface of the first gear 24 is fixedly connected to the upper end of the second transmission rod 25, the lower end of the second transmission rod 25 is fixedly connected to the top surface of the second gear 26, the surface of the first gear 24 meshes with the surface of the first gear ring 27, and the surface of the second gear 26 meshes with the surface of the first gear ring 27. The surface of the second toothed ring 28 is engaged with the surface of the first toothed ring 27, which is fixedly connected to the surface of the coal drop pipe 29. The inner surface of the second toothed ring 28 is fixedly connected to the surface of the coal drop pipe 29. The inner surface of the coal drop pipe 29 is movably connected to the surface of the scraper 202. The upper end of the coal drop pipe 29 is rotatably connected to the inner surface of the coal receiving pipe 1. A fixing plate 21 is fixedly connected to the surface of the coal receiving pipe 1. The bottom surface of the fixing plate 21 is fixedly connected to one end of the rotating motor 22. A snap-fit ​​plate 201 is fixedly connected to the inner surface of the coal receiving pipe 1. The surface of the snap-fit ​​plate 201 is movably inserted into the surface of the scraper 202. A bolt 203 is threadedly connected to the surface of the snap-fit ​​plate 201. The surface of the bolt 203 is threadedly connected to the upper end of the scraper 202. A connecting mechanism 3 is rotatably connected to the lower end of the coal drop pipe 29.

[0023] In this embodiment, coal blocks slide into the coal drop pipe 29 through the coal receiving pipe 1. The output end of the rotating motor 22 drives the first rotating rod 23 to rotate, which in turn drives the first gear 24 and the second gear 26 to rotate. The rotation of the first gear 24 and the second gear 26 drives the first gear ring 27 and the second gear ring 28 to rotate, which in turn drives the coal drop pipe 29 to rotate. The rotation of the coal drop pipe 29 causes the coal blocks to fall to different positions in the inner cavity of the coal drop pipe 29 after falling, effectively reducing the risk of coal blockage. While the coal drop pipe 29 is rotating, the scraper 202 can scrape off the coal slag and ash attached to the inner surface of the coal drop pipe 29, further preventing the coal drop pipe 29 from getting blocked and facilitating the cleaning of the inside of the coal drop pipe 29 later, thus improving work efficiency. When the scraper 202 becomes worn and cannot be used, it can be pulled out and replaced by removing the bolt 203, which is convenient for use.

[0024] Example 2

[0025] like Figure 1-4As shown, based on Embodiment 1, this utility model provides a technical solution: preferably, the connecting mechanism 3 includes a discharge pipe 31, a sealing strip 32, and a fixing member 33. The inner surface of the discharge pipe 31 is rotatably connected to the lower end of the coal drop pipe 29. The surface groove of the discharge pipe 31 is provided with a sealing strip 32, and the surface of the discharge pipe 31 is fixedly connected with a fixing member 33.

[0026] In this embodiment, the discharge pipe 31 is fixed to the coal block docking device by using external bolts and nuts of the fastener 33, and the sealing strip 32 is used to enhance the tightness of the connection, thereby reducing the exposure of coal ash.

[0027] The working principle of the anti-clogging coal drop pipe of the coal mill will be explained in detail below.

[0028] like Figure 1-4 As shown, by inserting the scraper 202 into the snap-fit ​​plate 201 and then fixing the scraper 202 with bolts 203, the coal blocks slide into the coal drop pipe 29 through the coal receiving pipe 1. The motor 22 is started and rotated. The output end of the rotating motor 22 drives the first rotating rod 23 to rotate, thereby driving the first gear 24 and the second gear 26 to rotate. The rotation of the first gear 24 and the second gear 26 drives the first gear ring 27 and the second gear ring 28 to rotate, which in turn drives the coal drop pipe 29 to rotate. After falling, the coal blocks fall to different positions in the inner cavity of the coal drop pipe 29. While the coal drop pipe 29 rotates, the scraper 202 scrapes off the coal slag and ash attached to the inner surface of the coal drop pipe 29. The falling coal blocks are discharged through the discharge pipe 31. When the scraper 202 becomes worn and unusable, it can be removed and replaced by removing the bolts 203.

[0029] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A mill anti-bridging coal pipe comprising a coal receiving pipe (1) characterised in that: The surface of the coal receiving pipe (1) is provided with a rotating mechanism (2) to prevent coal blockage; The rotating mechanism (2) includes a rotating motor (22), a first rotating rod (23), a first gear (24), a second transmission rod (25), a second gear (26), a first gear ring (27), a second gear ring (28), a coal chute (29), and a scraper (202). The output end of the rotating motor (22) is fixedly connected to the upper end of the first rotating rod (23), the lower end of the first rotating rod (23) is fixedly connected to the top surface of the first gear (24), the bottom surface of the first gear (24) is fixedly connected to the upper end of the second transmission rod (25), and the lower end of the second transmission rod (25) is fixedly connected to the top surface of the first gear (24). The end is fixedly connected to the top surface of the second gear (26), the surface of the first gear (24) meshes with the surface of the first gear ring (27), the surface of the second gear (26) meshes with the surface of the second gear ring (28), the inner ring surface of the first gear ring (27) is fixedly connected to the surface of the coal drop pipe (29), the inner ring surface of the second gear ring (28) is fixedly connected to the surface of the coal drop pipe (29), the inner cavity surface of the coal drop pipe (29) is movably connected to the surface of the scraper (202), and the upper end of the coal drop pipe (29) is rotatably connected to the inner cavity surface of the coal receiving pipe (1).

2. A mill anti-jamming coal pipe according to claim 1, characterised in that: A fixing plate (21) is fixedly connected to the surface of the coal receiving pipe (1), and the bottom surface of the fixing plate (21) is fixedly connected to one end of the rotating motor (22).

3. A mill anti-jamming coal pipe according to claim 2, characterised in that: The inner surface of the coal receiving pipe (1) is fixedly connected to a snap-fit ​​plate (201), and the surface of the snap-fit ​​plate (201) is movably inserted into the surface of the scraper (202).

4. The anti-blocking coal chutes for a coal mill according to claim 3, characterized in that: The surface of the snap-fit ​​plate (201) is threaded with a bolt (203), the surface of the bolt (203) is threaded with the upper end of the scraper (202), and the lower end of the coal drop pipe (29) is rotatably connected with a connecting mechanism (3).

5. A mill anti-jamming coal pipe according to claim 4, characterised in that: The connecting mechanism (3) includes a discharge pipe (31), a sealing strip (32), and a fixing member (33). The inner surface of the discharge pipe (31) is rotatably connected to the lower end of the coal drop pipe (29). The surface groove of the discharge pipe (31) is provided with a sealing strip (32).

6. A mill anti-jamming coal pipe according to claim 5, characterised in that: The surface of the discharge pipe (31) is fixedly connected to a fastener (33).

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