Pulverized coal pneumatic conveying device

Abstract

The utility model discloses a pulverized coal pneumatic conveying device which comprises a stock bin, a cleaning mechanism is arranged in the stock bin, a dismounting mechanism is arranged on the side face of the stock bin, a feeding port is fixedly connected to the upper end of the stock bin, a conveying pipe is fixedly connected to the lower end of the stock bin, a first motor is fixedly connected to the side face of the conveying pipe, and a second motor is fixedly connected to the side face of the first motor. A fan is fixedly connected to the side face of an output shaft of the first motor, and a first filter screen is arranged in the conveying pipe. By means of the structure, the second motor is started, the first rotating column is driven to rotate, the first smashing roller and the second smashing roller are driven to rotate along with the first rotating column, and therefore pulverized coal is quickly scattered, then the pulverized coal quickly enters the conveying pipe through the second filter screen, and meanwhile the pulverized coal is conveyed into the conveying pipe through the third gear. Therefore, the scraper cleans the pulverized coal on the surface of the second filter screen in a reciprocating mode, the second filter screen is prevented from being blocked, efficient crushing of the pulverized coal and automatic cleaning of the filter screen are achieved, and manual intervention is reduced.

Description

Technical Field

[0001] This utility model relates to the field of pulverized coal conveying technology, and in particular to a pneumatic conveying device for pulverized coal. Background Technology

[0002] Pulverized coal is a powdered fuel formed by grinding coal into micron-sized particles. It has the characteristics of high combustion efficiency (up to 99% or more), fast reaction speed, and complete combustion.

[0003] Compared with existing technologies, conventional devices rely solely on pneumatic conveying without pre-treating the coal powder, resulting in uneven conveying and a tendency for "empty pipes" or "blockages." This necessitates frequent maintenance and cleaning of the equipment, consuming significant manpower and resources. Furthermore, commonly used filters are easily adhered to by fine powder, leading to decreased permeability after long-term operation, which in turn affects conveying efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a coal powder pneumatic conveying device that can achieve efficient coal powder crushing and automatic filter cleaning, reduce manual intervention, and facilitate observation and maintenance by staff.

[0005] To achieve the above objectives, a pulverized coal pneumatic conveying device is provided, including a silo, a cleaning mechanism inside the silo, a disassembly mechanism on the side of the silo, a feed inlet fixedly connected to the upper end of the silo, a conveying pipe fixedly connected to the lower end of the silo, a motor fixedly connected to the side of the conveying pipe, a fan fixedly connected to the side of the output shaft of the motor, and a filter screen inside the conveying pipe.

[0006] The cleaning mechanism includes a second motor, a first rotating column fixedly connected to the side of the output shaft of the second motor, a first crushing roller fixedly connected to the surface of the first rotating column, a first gear fixedly connected to the side of the first rotating column, a second rotating column rotatably connected inside the hopper, a second crushing roller fixedly connected to the surface of the second rotating column, a second gear fixedly connected to the side of the second rotating column, a double-threaded rod rotatably connected inside the hopper, a third rotating column fixedly connected to the side of the second double-threaded rod, a third gear fixedly connected to the side of the third rotating column, a scraper threadedly connected to the surface of the second double-threaded rod, a second filter screen installed inside the hopper, and a sliding groove opened inside the hopper.

[0007] According to the pulverized coal pneumatic conveying device, the disassembly mechanism includes a door panel, a fixed column is fixedly connected to the side of the door panel, a disc is fixedly connected to the side of the fixed column, a torsion spring rod is provided on the side of the hopper, and an inclined block is fixedly connected to the side of the torsion spring rod.

[0008] According to the pulverized coal pneumatic conveying device, the second gear is positioned on the side of the first gear, and the second gear meshes with the side of the first gear. Through the meshing of the second gear with the side of the first gear, the first gear drives the second gear to rotate.

[0009] According to the pulverized coal pneumatic conveying device, the third gear is positioned at the lower end of the second gear, and the third gear meshes with the lower end of the second gear. Through the meshing of the third gear with the lower end of the second gear, the second gear drives the third gear to rotate.

[0010] According to the pulverized coal pneumatic conveying device, the scraper is positioned inside the sliding groove and is slidably connected to the inside of the sliding groove. This slidable connection allows the scraper to move more stably left and right by being limited by the sliding groove.

[0011] According to the aforementioned pulverized coal pneumatic conveying device, the bidirectional threaded rod is positioned inside the hopper, and a baffle is provided at the upper end of the bidirectional threaded rod. The baffle at the upper end of the bidirectional threaded rod prevents pulverized coal from falling directly onto the surface of the bidirectional threaded rod.

[0012] According to the aforementioned pulverized coal pneumatic conveying device, the inclined block is positioned at the upper end of the fixed column, and the inclined block is engaged with the upper end of the fixed column. The device is thus fixed by engaging the inclined block with the upper end of the fixed column.

[0013] According to the pulverized coal pneumatic conveying device, the door panel is located inside the silo and is rotatably connected to the inside of the silo. This rotatable connection between the door panel and the inside of the silo allows the device to operate better.

[0014] This utility model has the following beneficial effects:

[0015] 1. Compared with the existing technology, by starting motor 2, the rotating column 1 is driven to rotate, and the crushing roller 1 and crushing roller 2 are driven to rotate, thereby quickly breaking up the coal powder. Then, through the setting of filter screen 2, the coal powder is quickly put into the conveying pipe. At the same time, through the setting of gear 3, the scraper reciprocates to clean the coal powder on the surface of filter screen 2, preventing filter screen 2 from clogging. This achieves efficient coal powder crushing and automatic filter screen cleaning, and reduces manual intervention.

[0016] 2. Compared with existing technologies, by rotating the inclined block, the inclined block is moved away from the fixed column, and then the disc fixedly connected to the side of the fixed column is pulled to open the door panel, which makes it easier for staff to observe and maintain the device, thus further enhancing its practicality. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a three-dimensional overall structural diagram of the pulverized coal pneumatic conveying device of this utility model;

[0019] Figure 2 This is a three-dimensional side sectional view of the pulverized coal pneumatic conveying device of this utility model;

[0020] Figure 3 This is a schematic diagram of the filter screen and its structure of the pulverized coal pneumatic conveying device of this utility model;

[0021] Figure 4 This utility model relates to a pneumatic conveying device for pulverized coal. Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0022] Legend:

[0023] 1. Hopper; 2. Cleaning mechanism; 3. Disassembly mechanism; 4. Feed inlet; 5. Motor 1; 6. Conveying pipe; 7. Fan; 8. Filter screen 1; 21. Motor 2; 22. Rotating column 1; 23. Crushing roller 1; 24. Gear 1; 25. Rotating column 2; 26. Gear 2; 27. Crushing roller 2; 28. Rotating column 3; 29. ​​Gear 3; 210. Bidirectional threaded rod; 211. Scraper; 212. Filter screen 2; 213. Sliding groove; 31. Door panel; 32. Fixed column; 33. Disc; 34. Torsion spring rod; 35. Inclined block. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] Reference Figure 1-4 The present invention relates to a coal powder pneumatic conveying device, which includes a silo 1, a cleaning mechanism 2 inside the silo 1, a disassembly mechanism 3 on the side of the silo 1, a feed inlet 4 fixedly connected to the upper end of the silo 1, a conveying pipe 6 fixedly connected to the lower end of the silo 1, a motor 5 fixedly connected to the side of the conveying pipe 6, a fan 7 fixedly connected to the side of the output shaft of the motor 5, and a filter screen 8 inside the conveying pipe 6.

[0026] The cleaning mechanism 2 includes a second motor 21. A rotating column 22 is fixedly connected to the side of the output shaft of the second motor 21. A crushing roller 23 is fixedly connected to the surface of the rotating column 22. A gear 24 is fixedly connected to the side of the rotating column 22. A second rotating column 25 is rotatably connected inside the hopper 1. A crushing roller 27 is fixedly connected to the surface of the second rotating column 25. A gear 26 is fixedly connected to the side of the second rotating column 25. The gear 26 is positioned on the side of the gear 24 and meshes with the side of the gear 24. A bidirectional threaded rod 210 is rotatably connected inside the hopper 1. The bidirectional threaded rod 210 is positioned on the side of the gear 24. Inside the hopper 1, a baffle is provided at the upper end of the bidirectional threaded rod 210. A rotating column 3 28 is fixedly connected to the side of the bidirectional threaded rod 210. A gear 3 29 is fixedly connected to the side of the rotating column 3 28. The gear 3 29 is located at the lower end of the gear 2 26. The gear 3 29 meshes with the lower end of the gear 2 26. A scraper 211 is threadedly connected to the surface of the bidirectional threaded rod 210. The scraper 211 is located inside the sliding groove 213. The scraper 211 is slidably connected to the inside of the sliding groove 213. A filter screen 212 is provided inside the hopper 1. The sliding groove 213 is opened inside the hopper 1.

[0027] The disassembly mechanism 3 includes a door panel 31, which is located inside the hopper 1 and is rotatably connected to the inside of the hopper 1. A fixing post 32 is fixedly connected to the side of the door panel 31, and a disc 33 is fixedly connected to the side of the fixing post 32. A torsion spring rod 34 is provided on the side of the hopper 1, and a inclined block 35 is fixedly connected to the side of the torsion spring rod 34. The inclined block 35 is located at the upper end of the fixing post 32 and is engaged with the upper end of the fixing post 32.

[0028] Working Principle: In operation, motor 21 is first started, simultaneously rotating the rotating column 22. This causes the crushing roller 23, fixedly connected to the surface of the rotating column 22, to rotate as well. Gear 24 also rotates. Gear 26 then drives the crushing roller 27 to rotate, rapidly breaking up the coal powder. The coal powder then passes through the filter screen 212, quickly entering the conveying pipe 6. Gear 3 29 drives the bidirectional threaded rod 210 to rotate. The sliding groove 213 limits the movement of the scraper 211, which reciprocates to clean the coal powder from the surface of the filter screen 212, preventing clogging and achieving efficient coal powder crushing and automatic filter cleaning, reducing manual intervention. When cleaning and maintenance are required, the inclined block 35 is rotated away from the fixed column 32. Then, the disc 33 fixedly connected to the side of the fixed column 32 is pulled, opening the door panel 31 for easy observation and maintenance, further enhancing the device's practicality.

[0029] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A pneumatic conveying device for pulverized coal, characterized in that, Includes a hopper (1), the hopper (1) is equipped with a cleaning mechanism (2) inside, the hopper (1) is equipped with a disassembly mechanism (3) on the side, the hopper (1) is fixedly connected to an inlet (4) at the upper end, the hopper (1) is fixedly connected to a conveying pipe (6) at the lower end, a motor (5) is fixedly connected to the side of the conveying pipe (6), a fan (7) is fixedly connected to the side of the output shaft of the motor (5), and a filter screen (8) is provided inside the conveying pipe (6). The cleaning mechanism (2) includes a second motor (21), a rotating column (22) is fixedly connected to the side of the output shaft of the second motor (21), a crushing roller (23) is fixedly connected to the surface of the rotating column (22), a gear (24) is fixedly connected to the side of the rotating column (22), a rotating column (25) is rotatably connected inside the hopper (1), a crushing roller (27) is fixedly connected to the surface of the rotating column (25), a gear (26) is fixedly connected to the side of the rotating column (25), a bidirectional threaded rod (210) is rotatably connected inside the hopper (1), a rotating column (28) is fixedly connected to the side of the bidirectional threaded rod (210), a gear (29) is fixedly connected to the side of the rotating column (28), a scraper (211) is threadedly connected to the surface of the bidirectional threaded rod (210), a filter screen (212) is provided inside the hopper (1), and a sliding groove (213) is opened inside the hopper (1).

2. The pulverized coal pneumatic conveying device according to claim 1, characterized in that, The disassembly mechanism (3) includes a door panel (31), a fixing column (32) is fixedly connected to the side of the door panel (31), a disc (33) is fixedly connected to the side of the fixing column (32), a torsion spring rod (34) is provided on the side of the hopper (1), and a slope block (35) is fixedly connected to the side of the torsion spring rod (34).

3. The pulverized coal pneumatic conveying device according to claim 2, characterized in that, The second gear (26) is positioned on the side of the first gear (24), and the second gear (26) meshes with the side of the first gear (24).

4. The pulverized coal pneumatic conveying device according to claim 3, characterized in that, The third gear (29) is positioned at the lower end of the second gear (26), and the third gear (29) meshes with the lower end of the second gear (26).

5. The pulverized coal pneumatic conveying device according to claim 4, characterized in that, The scraper (211) is positioned inside the sliding groove (213), and the scraper (211) is slidably connected to the inside of the sliding groove (213).

6. The pulverized coal pneumatic conveying device according to claim 5, characterized in that, The bidirectional threaded rod (210) is located inside the hopper (1), and a baffle is provided at the upper end of the bidirectional threaded rod (210).

7. The pulverized coal pneumatic conveying device according to claim 6, characterized in that, The inclined block (35) is positioned at the upper end of the fixed column (32), and the inclined block (35) is engaged with the upper end of the fixed column (32).

8. The pulverized coal pneumatic conveying device according to claim 7, characterized in that, The door panel (31) is located inside the hopper (1), and the door panel (31) is rotatably connected to the inside of the hopper (1).

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