Roller-type coal pulverizing device

Abstract

The utility model relates to a kind of pair of roller coal powder pulverizing device, including rack and the receiving hopper being set on rack, the inside of receiving hopper is provided with crushing assembly, and scattering assembly is provided on receiving hopper, scattering assembly is connected with crushing assembly by transmission structure, drive mechanism is set on rack, drive mechanism is connected with crushing assembly and boiler respectively, the utility model, by setting crushing assembly and scattering assembly inside receiving hopper, so that raw coal is first after entering crushing assembly scattering treatment, can effectively avoid raw coal caking, improve crushing effect, ensure the uniformity of coal powder;Drive mechanism not only drives crushing assembly to operate, but also can transport the high-temperature flue gas exhausted from boiler to crushing assembly, realize the further drying of raw coal, not only improve the utilization efficiency of energy, but also solve the problem of insufficient drying that traditional drying equipment can leave, ensure that raw coal can be completed drying synchronously in the crushing process.

Description

Technical Field

[0001] This utility model relates to the field of coal powder preparation technology, specifically a roller-type coal powder preparation device. Background Technology

[0002] In modern industrial production, pulverized coal preparation can significantly improve the efficiency of boilers, lime kilns, blast furnace injection systems, and coal chemical projects, thereby increasing production capacity and quality to adapt to today's rapidly developing society and economy. At the same time, pulverized coal preparation can also reduce the emission of various harmful gases and dust, achieving the goal of energy conservation and emission reduction.

[0003] Existing technologies for roller-type pulverized coal grinding plants have some shortcomings, particularly in the drying and grinding of raw coal. Traditional drying equipment may fail to dry raw coal sufficiently, resulting in some coal still containing high moisture content upon entering the grinding assembly. This not only increases the difficulty of grinding but may also cause coal powder agglomeration, affecting the uniformity and quality of the powder. Furthermore, if agglomeration exists before the raw coal enters the grinding assembly, it further reduces the grinding effect, leading to uneven particle size distribution and consequently impacting subsequent combustion efficiency and stability. Utility Model Content

[0004] The purpose of this invention is to provide a roller-type coal powder pulverizing device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A double-roller coal pulverizing device includes a frame and a receiving hopper mounted on the frame. The receiving hopper is equipped with a crushing component, which can grind raw coal when it is in operation.

[0007] The receiving hopper is equipped with a dispersing component, which is connected to the crushing component through a transmission structure. When the crushing component is running, the dispersing component will follow and the raw coal will fall into the crushing component after being processed by the dispersing component.

[0008] A drive mechanism is installed on the frame. The drive mechanism is connected to the crushing component and the boiler respectively. When the drive mechanism is running, it can transport the high-temperature flue gas discharged from the boiler to the crushing component and drive the crushing component to run, so that the raw coal missed by the drying equipment or dampened during the transportation process can be crushed and dried at the same time.

[0009] As a further embodiment of this utility model:

[0010] The crushing assembly includes a first crushing roller and a second crushing roller that are respectively horizontally rotatably mounted on the receiving hopper, and the first crushing roller and the second crushing roller mesh with each other;

[0011] One end of the first crushing roller is coaxially provided with a first gear, and one end of the second crushing roller is coaxially provided with a second gear that meshes with the first gear.

[0012] As a further improvement of this utility model:

[0013] The first crushing roller has an air duct inside, and the air duct runs through the first crushing roller along its length.

[0014] The second crushing roller has a second air duct inside, which runs through the second crushing roller along its length.

[0015] As a further improvement of this utility model:

[0016] The dispersing assembly includes a frame plate and a screen detachably disposed at the bottom of the frame plate, and the side wall of the frame plate is provided with a slider;

[0017] The receiving hopper has a vertically formed groove on its side wall, and a guide rod is vertically arranged in the groove. The slider is slidably sleeved on the outer wall of the guide rod, and a spring is sleeved on the outer wall of the guide rod. The two ends of the spring abut against the bottom of the slider and the bottom of the groove, respectively.

[0018] As a further improvement of this utility model:

[0019] The receiving hopper is equipped with a horizontally rotating shaft, and the outer wall of the frame plate is provided with a mating plate;

[0020] The outer wall of the rotating shaft is provided with a cam, which engages with the top of the mating plate.

[0021] As a further improvement of this utility model:

[0022] The transmission structure includes a first pulley and a second pulley, with the first pulley coaxially mounted on the rotating shaft.

[0023] The second pulley is coaxially disposed at the other end of the second crushing roller, and the first pulley and the second pulley are connected by a first toothed belt.

[0024] As a further improvement of this utility model:

[0025] The drive mechanism includes a pump and a bellows. The pump is mounted on the frame, and the bellows is mounted on the receiving hopper. The other ends of the first and second crushing rollers are rotatably connected to the side wall of the bellows. The interior of the bellows is connected to the first and second air ducts. The air outlet of the pump and the bellows are connected by an air duct, and the air inlet of the pump is connected to the boiler by a pipe.

[0026] The pump output end has a No. 3 pulley coaxially mounted on its outer wall, and the No. 4 pulley is coaxially mounted on one end of the No. 1 crushing roller. The No. 3 pulley and the No. 4 pulley are connected by a second toothed belt.

[0027] Compared with the prior art, the beneficial effects of this utility model are:

[0028] By installing a crushing and dispersing component inside the receiving hopper and connecting the dispersing component to the crushing component, the raw coal is first dispersed before entering the crushing component, which effectively prevents the raw coal from clumping, improves the crushing effect, and ensures the uniformity of the coal powder. Secondly, the drive mechanism not only drives the crushing component, but also transports the high-temperature flue gas discharged from the boiler to the crushing component to achieve further drying of the raw coal. This not only improves energy utilization efficiency, but also solves the problem of insufficient drying that may remain in traditional drying equipment, ensuring that the raw coal can be dried simultaneously during the crushing process, improving the quality of the coal powder, reducing energy consumption, and enhancing the overall performance and practicality of the device. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of one embodiment of a roller-type coal pulverizing device.

[0030] Figure 2 This is a schematic diagram of a roller-type pulverized coal preparation device after the drive mechanism has been removed.

[0031] Figure 3 This is a schematic diagram showing the partial disintegration of a component in one embodiment of a roller-type pulverized coal grinding device.

[0032] Figure 4 This is a cross-sectional view of the bellows in one embodiment of a roller-type pulverized coal making device.

[0033] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0034] Figure 6 This is a schematic diagram of the overall structure from another perspective of one embodiment of a roller-type pulverized coal preparation device.

[0035] In the diagram: 1. Frame; 2. Feeding hopper; 201. Slide chute; 3. No. 1 crushing roller; 301. No. 1 air duct; 4. No. 2 crushing roller; 401. No. 2 air duct; 5. No. 1 gear; 6. No. 2 gear; 7. Frame plate; 701. Sliding block; 8. Screen; 9. Guide rod; 10. Spring; 11. Rotating shaft; 12. Mating plate; 13. Cam; 14. No. 1 pulley; 15. No. 2 pulley; 16. First toothed belt; 17. Pump; 18. Air box; 19. No. 3 pulley; 20. No. 4 pulley; 21. Second toothed belt; 22. Air duct. Detailed Implementation

[0036] 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.

[0037] Furthermore, the elements in this invention are referred to as being "fixed to" or "set on" another element, which may be directly on the other element or may also include an intervening element. When an element is considered to be "connected" to another element, it may be directly connected to the other element or may also include an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0038] Please see Figures 1-6 In this embodiment of the present invention, a double-roller coal powder grinding device includes a frame 1 and a receiving hopper 2 disposed on the frame 1. The receiving hopper 2 is provided with a crushing component inside, which can grind raw coal when the crushing component is running.

[0039] The receiving hopper 2 is equipped with a dispersing component, which is connected to the crushing component through a transmission structure. When the crushing component is running, the dispersing component will follow and the raw coal will fall into the crushing component after being processed by the dispersing component.

[0040] A drive mechanism is provided on the frame 1. The drive mechanism is connected to the crushing component and the boiler respectively. When the drive mechanism is running, it can transport the high-temperature flue gas discharged from the boiler to the crushing component and drive the crushing component to run, so that the raw coal missed by the drying equipment or dampened during the transportation process can be crushed and dried at the same time.

[0041] In this scheme, when the roller-type coal pulverizing device is running, the drive mechanism starts first, driving the crushing component to operate on one hand, and conveying the high-temperature flue gas discharged from the boiler to the crushing component on the other hand. At the same time, the crushing component drives the dispersing component connected to it to operate together. The raw coal first enters the receiving hopper 2, and after being processed by the dispersing component, the lumpy raw coal is fully dispersed and falls into the crushing component. During the grinding process of the raw coal by the crushing component, the high-temperature flue gas continuously acts on the raw coal, further drying it. This effectively solves the problem of insufficient drying caused by the raw coal being damp during transportation or by the leakage of drying equipment, realizing the drying of raw coal while crushing, and improving the quality and uniformity of coal powder.

[0042] As a further embodiment of this utility model, the crushing assembly includes a first crushing roller 3 and a second crushing roller 4 that are respectively horizontally rotatably mounted on the receiving hopper 2, and the first crushing roller 3 and the second crushing roller 4 mesh with each other;

[0043] One end of the first crushing roller 3 is coaxially provided with a first gear 5, and one end of the second crushing roller 4 is coaxially provided with a second gear 6 that meshes with the first gear 5.

[0044] The first crushing roller 3 has a first air duct 301 inside, and the first air duct 301 is arranged to penetrate along the length direction of the first crushing roller 3.

[0045] The second crushing roller 4 has a second air duct 401 inside, which runs through the second crushing roller 4 along its length.

[0046] In this embodiment, when the crushing assembly is running, the first crushing roller 3 and the second crushing roller 4 mesh and rotate with each other. The first crushing roller 3 drives the first gear 5 to rotate. The first gear 5 meshes with the second gear 6, driving the second crushing roller 4 to rotate relative to the first crushing roller 3. After the raw coal enters the receiving hopper 2, it is processed by the dispersing assembly and falls evenly onto the crushing assembly. The first crushing roller 3 and the second crushing roller 4 squeeze and grind the raw coal with each other, crushing it into coal powder. When hot air is introduced into the first air duct 301 and the second air duct 401, the first crushing roller 3 and the second crushing roller 4 are heated, which helps to dry the raw coal during the crushing process.

[0047] As a further embodiment of this utility model, the dispersing component includes a frame plate 7 and a screen 8 detachably disposed at the bottom of the frame plate 7, and a slider 701 is provided on the side wall of the frame plate 7.

[0048] The receiving hopper 2 has a vertically formed groove 201 on its side wall. A guide rod 9 is vertically arranged in the groove 201. The slider 701 is slidably sleeved on the outer wall of the guide rod 9. A spring 10 is sleeved on the outer wall of the guide rod 9. The two ends of the spring 10 abut against the bottom of the slider 701 and the bottom of the groove 201, respectively.

[0049] The receiving hopper 2 is horizontally rotatably provided with a rotating shaft 11, and the outer wall of the frame plate 7 is provided with a mating plate 12;

[0050] The outer wall of the rotating shaft 11 is provided with a cam 13, which engages with the top of the mating plate 12.

[0051] In this embodiment, when raw coal enters the receiving hopper 2, it first falls onto the screen 8 fixed at the bottom of the frame plate 7. The frame plate 7 slides along the guide rod 9 via the slider 701, and the spring 10 provides elastic support for the frame plate 7. When the rotating shaft 11 rotates horizontally, it will drive the cam 13 to rotate. The cam 13 periodically pushes the frame plate 7 downward through the mating plate 12, causing the frame plate 7 and the screen 8 to vibrate. The vibrating screen 8 breaks up and screens the raw coal, so that the raw coal falls evenly onto the crushing component for subsequent crushing.

[0052] As a further embodiment of this utility model, the transmission structure includes a first pulley 14 and a second pulley 15, wherein the first pulley 14 is coaxially arranged on the rotating shaft 11;

[0053] The second pulley 15 is coaxially disposed at the other end of the second crushing roller 4, and the first pulley 14 and the second pulley 15 are connected by the first toothed belt 16.

[0054] In this embodiment, since the first pulley 14 fixed on the rotating shaft 11 and the second pulley 15 fixed on the second crushing roller 4 are connected by the first toothed belt 16, the rotating shaft 11 will rotate when the second crushing roller 4 rotates.

[0055] As a further embodiment of this utility model, the driving mechanism includes a pump 17 and a bellows 18. The pump 17 is mounted on the frame 1, and the bellows 18 is mounted on the receiving hopper 2. The other ends of the first crushing roller 3 and the second crushing roller 4 are rotatably connected to the side wall of the bellows 18. The interior of the bellows 18 is connected to the first air duct 301 and the second air duct 401. The air outlet of the pump 17 and the bellows 18 are connected through an air duct 22. The air inlet of the pump 17 is connected to the boiler through a pipe.

[0056] The pump 17 has a No. 3 pulley 19 coaxially mounted on the outer wall of its output end, and a No. 4 pulley 20 coaxially mounted on one end of the No. 1 crushing roller 3. The No. 3 pulley 19 and the No. 4 pulley 20 are connected by a second toothed belt 21.

[0057] In this embodiment, when the drive mechanism is running, the pump 17 starts, draws in high-temperature flue gas from the boiler through the pipeline, and transports the flue gas to the air box 18 through the air duct 22. Then, it is introduced into the first crushing roller 3 and the second crushing roller 4 through the first air duct 301 and the second air duct 401 to dry the raw coal. At the same time, the third pulley 19 at the output end of the pump 17 drives the fourth pulley 20 to rotate through the second toothed belt 21, thereby driving the first crushing roller 3 to rotate and crush the raw coal.

[0058] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0059] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A roller-type pulverized coal grinding device, comprising a frame (1) and a receiving hopper (2) disposed on the frame (1), characterized in that, The receiving hopper (2) is equipped with a crushing component inside, which can grind the raw coal when the crushing component is running; The receiving hopper (2) is equipped with a dispersing component. The dispersing component is connected to the crushing component through a transmission structure. When the crushing component is running, the dispersing component will follow. The raw coal falls into the crushing component after being processed by the dispersing component. A drive mechanism is provided on the frame (1). The drive mechanism is connected to the crushing component and the boiler respectively. When the drive mechanism is running, it can transport the high-temperature flue gas discharged from the boiler to the crushing component and drive the crushing component to run, so that the raw coal missed by the drying equipment or damp during the transportation process can be crushed and dried at the same time.

2. The roller-type pulverized coal grinding device according to claim 1, characterized in that, The crushing assembly includes a first crushing roller (3) and a second crushing roller (4) that are respectively horizontally rotated on the receiving hopper (2), and the first crushing roller (3) and the second crushing roller (4) mesh with each other; One end of the first crushing roller (3) is coaxially provided with a first gear (5), and one end of the second crushing roller (4) is coaxially provided with a second gear (6) that meshes with the first gear (5).

3. The roller-type coal pulverizing device according to claim 2, characterized in that, The first crushing roller (3) has a first air duct (301) inside, and the first air duct (301) is arranged through the length of the first crushing roller (3); The second crushing roller (4) has a second air duct (401) inside, which runs through the second crushing roller (4) along its length.

4. The roller-type coal pulverizing device according to claim 3, characterized in that, The dispersing component includes a frame plate (7) and a screen (8) detachably disposed at the bottom of the frame plate (7), and a slider (701) is provided on the side wall of the frame plate (7). The receiving hopper (2) has a vertically formed groove (201) on its side wall. A guide rod (9) is vertically arranged in the groove (201). The slider (701) is slidably sleeved on the outer wall of the guide rod (9). A spring (10) is sleeved on the outer wall of the guide rod (9). The two ends of the spring (10) abut against the bottom of the slider (701) and the bottom of the groove (201), respectively.

5. A roller-type coal pulverizing device according to claim 4, characterized in that, The receiving hopper (2) is provided with a rotating shaft (11) that rotates horizontally, and the outer wall of the frame plate (7) is provided with a mating plate (12). The outer wall of the rotating shaft (11) is provided with a cam (13), which engages with the top of the mating plate (12).

6. A roller-type coal pulverizing device according to claim 5, characterized in that, The transmission structure includes a first pulley (14) and a second pulley (15), with the first pulley (14) coaxially mounted on the rotating shaft (11); The second pulley (15) is coaxially arranged at the other end of the second crushing roller (4), and the first pulley (14) and the second pulley (15) are connected by a first toothed belt (16).

7. A roller-type pulverized coal grinding device according to claim 3, characterized in that, The driving mechanism includes a pump (17) and a bellows (18). The pump (17) is mounted on the frame (1), and the bellows (18) is mounted on the receiving hopper (2). The other ends of the first crushing roller (3) and the second crushing roller (4) are rotatably connected to the side wall of the bellows (18). The interior of the bellows (18) is connected to the first air duct (301) and the second air duct (401). The air outlet of the pump (17) and the bellows (18) are connected by an air duct (22). The air inlet of the pump (17) is connected to the boiler by a pipe. The pump (17) has a No. 3 pulley (19) coaxially mounted on the outer wall of the output end, and a No. 4 pulley (20) coaxially mounted on one end of the No. 1 crushing roller (3). The No. 3 pulley (19) and the No. 4 pulley (20) are connected by a second toothed belt (21).

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