Pulverized coal pneumatic conveying device

Abstract

The utility model relates to the field of activated carbon preparation, and discloses a pulverized coal pneumatic conveying device which comprises a stock bin and a protection box, a feeding box is fixedly arranged on one side of the center of the upper end face of the stock bin, a smashing box is fixedly arranged on the upper end face of the inner wall of the stock bin, and a filter screen is fixedly arranged at the position, close to the lower end, of the inner wall of the smashing box. A crushing wheel is rotatably arranged at the center of the upper end face of the filter screen, fixing plates are fixedly arranged at the positions, close to the lower ends, of the two sides of the inner wall of the stock bin, telescopic rods are fixedly arranged on the upper end faces of the two fixing plates, a screen plate is fixedly arranged on the upper end faces of the two telescopic rods, and a screen is fixedly arranged at the center of the screen plate; according to the pulverized coal crushing device, air sucked by the draught fan can be filtered through the filter plate, rapid replacement of the filter plate is achieved through the locking mechanism, and caked pulverized coal balls are crushed into powder again under the dual action of the crushing wheel and the filter screen.

Description

Technical Field

[0001] The utility model relates to the field of preparation of activated carbon, in particular to a coal powder pneumatic conveying device. Background Art

[0002] Activated carbon is a carbon adsorbent with selective adsorption properties. It can be made from inorganic or organic carbon-containing materials such as coal, fruit shells, sawdust, etc., through physical high-temperature activation or chemical activation. Commonly used activated carbon is mostly made from anthracite, and coal powder needs to be transported during the processing.

[0003] In the prior art, compressed air is usually used to blow coal powder for transportation. However, after long-term stacking, coal powder will form lumps, which increases the weight and is difficult to blow. Long-term transportation will cause pipeline blockage. When the outside air is sucked in by the fan, it is usually necessary to install a filter plate to filter the outside air. The filter plate is mostly fixed with screws, which makes disassembly and cleaning time-consuming and labor-intensive.

[0004] Therefore, the utility model provides a coal powder pneumatic conveying device to solve the problems raised in the above background technology. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art, and the proposed coal powder pneumatic conveying device can filter the air sucked in by the fan through the filter plate, and realize the rapid replacement of the filter plate through the locking mechanism, and utilize the dual effects of the crushing wheel and the filter screen to re-crush the agglomerated coal powder into powder.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A coal powder pneumatic conveying device comprises a silo and a protection box, a feeding box is fixedly arranged on one side of the center of the upper end surface of the silo, a crushing box is fixedly arranged on the upper end surface of the inner wall of the silo, a filter is fixedly arranged at the lower end of the inner wall of the crushing box, a crushing wheel is rotatably arranged at the center of the upper end surface of the filter, fixed plates are fixedly arranged at the lower ends of both sides of the inner wall of the silo, telescopic rods are fixedly arranged on the upper ends of the two fixed plates, sieve plates are fixedly arranged on the upper ends of the two telescopic rods, a sieve is fixedly arranged at the center of the sieve plate, a rotating shaft is fixedly arranged on the inner wall of the silo near the front and rear ends, a rotating block is fixedly sleeved at the center of the outer wall of the rotating shaft, and a feeding pipe is fixedly arranged at the center of the bottom end surface of the silo;

[0008] A feed pipe is fixedly provided on one side of the protection box, a fan is fixedly provided at the center of the bottom end surface of the inner wall of the protection box, a mounting bracket is fixedly provided on the other side of the protection box, a top plate and a filter plate are slidably connected on the inner wall of the mounting bracket, a No. 1 spring is fixedly provided near the four corners on one side of the top plate, positioning holes are provided at the center of the front and rear end surfaces of the filter plate near the upper and lower ends, a No. 1 through slot is provided at the center of the front and rear ends of the outer wall of the mounting bracket, a rebound slot is provided on one side of the inner wall of the two No. 1 through slots, a No. 2 through slot is provided at the center of the opposite side of the two rebound slots near the upper and lower ends, a locking mechanism is movably provided in the two rebound slots, and the two locking mechanisms include a handle and a connecting plate. Two No. 2 springs, a connecting rod and two positioning rods;

[0009] Through the above technical scheme, the agglomerated coal powder can be re-ground into powder, and screened through a screen to make the coal powder finer and easier to blow. At the same time, the external air sucked in by the fan can be filtered through the filter plate to make the coal powder concentration relatively controllable, and the locking mechanism and the top plate can be used to achieve rapid disassembly of the filter plate.

[0010] Further, the two connecting rods are respectively fixedly arranged at the center of the opposite side of the two handles, the two connecting plates are respectively fixedly arranged at the opposite side of the two connecting rods, the four No. 2 springs are respectively fixedly arranged at the center of the two connecting plates away from each other and close to the upper and lower ends, and the four positioning rods are respectively fixedly arranged at the center of the opposite side of the two connecting plates and close to the upper and lower ends;

[0011] Through the above technical solution, the position of the filter plate can be locked and quickly unlocked, making it easy to replace the filter plate quickly and labor-savingly.

[0012] Further, the four positioning rods respectively penetrate the four No. 2 through slots and are respectively embedded in the four positioning holes, the two connecting rods respectively penetrate the two No. 1 through slots, the two connecting plates are respectively slidably arranged in the two rebound slots, and one end of the four No. 2 springs is respectively fixedly arranged on the inner walls of the two rebound slots away from the center of one side and close to the upper and lower ends;

[0013] Through the above technical solution, the position of the connecting rod in the positioning hole can be adjusted by pulling the handle, so that the position of the filter plate can be fixed by embedding the connecting rod in the positioning hole.

[0014] Furthermore, a No. 1 motor is fixedly arranged at the rear end of the lower end of the outer wall of the silo, a No. 2 motor is fixedly arranged at the center of the upper end surface of the silo, the rotating shaft is fixedly connected to the output end of the No. 1 motor, and the crushing wheel is fixedly connected to the output end of the No. 2 motor;

[0015] Through the above technical solution, the rotating shaft and the crushing wheel are driven by the No. 1 motor and the No. 2 motor, so that the agglomerated coal powder can be ground and screened out into finer powder through the screen.

[0016] Furthermore, the upper end surface of the filter screen is conical indented at the center, and the upper and lower end surfaces of the crushing wheel are conical protrusions, and the angle of the conical concave of the filter screen is greater than the angle of the conical protrusion of the crushing wheel;

[0017] Through the above technical solution, the agglomerated coal powder can be ground into powder through the gap between the filter screen and the crushing wheel that is continuously reduced from top to bottom.

[0018] Furthermore, the blower output end is fixedly connected to the material delivery pipe, and the feed pipe penetrates the outer wall of the material delivery pipe near the upper end;

[0019] The above technical solution makes it easy to compress the outside with the fan and then blow the coal powder to be transported and moved along the conveying pipe.

[0020] Furthermore, four brackets are fixedly provided on the bottom end surface of the silo, and a box door is hingedly provided on one side of the upper end surface of the feeding box;

[0021] Through the above technical solution, the bracket can make the silo higher than the feed pipe, so that the coal powder can fall freely into the feed pipe, and the box door can prevent dust from overflowing when the device is in operation.

[0022] The utility model has the following beneficial effects:

[0023] 1. The utility model proposes a pneumatic conveying device for pulverized coal. After pulverized coal is put into a feeding box, the box door is closed, and the No. 2 motor is started to drive the crushing wheel to rotate. The agglomerated pulverized coal can be re-grinded by the design that the gap between the crushing wheel and the filter is continuously reduced from top to bottom. The No. 1 motor and the rotating shaft drive the rotating block to rotate and continuously push the screen plate upward, so that the screen can screen the ground pulverized coal to make the pulverized coal finer, which can effectively prevent the pulverized coal from agglomerating and causing the weight to increase, making it inconvenient for pneumatic conveying.

[0024] 2. The pulverized coal pneumatic conveying device proposed by the utility model drives the positioning rod to move forward and backward by pulling the handles on both sides, so that the positioning rod is disengaged from the positioning holes at the front and rear ends of the filter plate to unlock the position of the filter plate. Then, the top plate pushes the filter plate to move outward under the action of spring No. 1, so that the filter plate is disengaged from the mounting frame, which is convenient for cleaning and replacing the filter plate, and solves the problem of inconvenience in disassembly and cleaning caused by fixing the position of the filter plate with bolts in the traditional fixing method. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an overall axonometric schematic diagram of the utility model;

[0026] Figure 2 It is a front cross-sectional schematic diagram of the utility model;

[0027] Figure 3 This is a schematic diagram of the internal structure combination of the protection box of the utility model;

[0028] Figure 4 This is an axonometric diagram of the locking mechanism of the utility model;

[0029] Figure 5 It is a partial side cross-sectional schematic diagram of the protection box of the utility model;

[0030] Figure 6 For the utility model Figure 2 Enlarged schematic diagram at point A in the middle.

[0031] Legend:

[0032] 1. Silo; 2. No. 1 motor; 3. Feed pipe; 4. Bracket; 5. Feed pipe; 6. Protection box; 7. Mounting frame; 8. Filter plate; 9. Feed box; 10. Box door; 11. No. 2 motor; 12. Crushing box; 13. Crushing wheel; 14. Filter screen; 15. Screen; 16. Telescopic rod; 17. Screen plate; 18. Fixed plate; 19. Fan; 20. Positioning hole; 21. Top plate; 22. No. 1 spring; 23. Locking mechanism; 24. No. 1 through slot; 25. No. 2 through slot; 26. Rebound slot; 27. Rotating block; 28. Rotating shaft; 2301. Handle; 2302. Connecting plate; 2303. No. 2 spring; 2304. Connecting rod; 2305. Positioning rod. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0034] Reference Figure 1-6, the utility model provides an embodiment: a coal powder pneumatic conveying device, including a silo 1 and a protection box 6, a feeding box 9 is fixedly arranged on one side of the center of the upper end surface of the silo 1, a crushing box 12 is fixedly arranged on the upper end surface of the inner wall of the silo 1, a filter screen 14 is fixedly arranged at the lower end of the inner wall of the crushing box 12, a crushing wheel 13 is rotatably arranged at the center of the upper end surface of the filter screen 14, and can cooperate with the filter screen 14 to realize the re-grinding of agglomerated coal powder agglomerates, fixed plates 18 are fixedly arranged at the lower ends of both sides of the inner wall of the silo 1, telescopic rods 16 are fixedly arranged on the upper end surfaces of the two fixed plates 18, sieve plates 17 are fixedly arranged on the upper end surfaces of the two telescopic rods 16, and a sieve 15 is fixedly arranged at the center of the sieve plate 17, a rotating shaft 28 is fixedly arranged on the inner wall of the silo 1 near the front and rear ends, a rotating block 27 is fixedly sleeved at the center of the outer wall of the rotating shaft 28, and a feeding pipe 5 is fixedly arranged at the center of the bottom end surface of the silo 1;

[0035] A feed pipe 3 is fixedly provided on one side of the protection box 6, a fan 19 is fixedly provided at the center of the bottom end surface of the inner wall of the protection box 6, a mounting frame 7 is fixedly provided on the other side of the protection box 6, a top plate 21 and a filter plate 8 are slidably connected on the inner wall of the mounting frame 7, a No. 1 spring 22 is fixedly provided near the four corners on one side of the top plate 21, a positioning hole 20 is provided at the center of the front and rear end surfaces of the filter plate 8 near the upper and lower ends, a No. 1 through groove 24 is provided at the center of the front and rear ends of the outer wall of the mounting frame 7, a rebound groove 26 is provided on one side of the inner wall of the two No. 1 through grooves 24, a No. 2 through groove 25 is provided through the center of the opposite side of the two rebound grooves 26 near the upper and lower ends, a locking mechanism 23 is movably provided in the two rebound grooves 26, which can cooperate with the top plate 21 and the No. 1 spring 22 to realize the rapid replacement of the filter plate 8, and the two locking mechanisms 23 each include a handle 2301 and a connecting plate 2302. Two No. 2 springs 2303, a connecting rod 2304 and two positioning rods 2305, four brackets 4 are fixedly arranged on the bottom end surface of the silo 1, and a box door 10 is hingedly arranged on one side of the upper end surface of the feeding box 9;

[0036] When in use, first open the box door 10 to pour the coal powder into the crushing box 12 along the feeding box 9, then close the box door 10 to prevent the coal powder from escaping to the outside, start the No. 2 motor 11 to drive the crushing wheel 13 to rotate, and the design that the gap between the conical protrusion on the crushing wheel 13 and the conical depression on the filter screen 14 is continuously reduced from top to bottom allows the crushing wheel 13 to press the agglomerated coal powder on the filter screen 14 during the rotation process to continuously rub it, which has the effect of re-grinding the coal powder into powder so that the ground coal powder falls onto the screen 15, and then start the No. 1 motor 2, and use the No. 1 motor 2 to drive the rotating block 27 to rotate through the rotating shaft 28, so that the irregular rotating block 27 continuously pushes the screen plate 17 upward;

[0037] At the same time, two telescopic rods 16 fixed on two fixed plates 18 support the sieve plate 17 to prevent the sieve plate 17 from turning over. The sieve plate 17 is continuously moved up and down to accelerate the sieving effect of the screen 15 on the coal powder, making the coal powder finer. The sieved coal powder enters the conveying pipe 3 along the discharge pipe 5, and then the fan 19 is started to compress the external air after filtering through the filter plate 8, and blow the coal powder along the conveying pipe 3 for transportation;

[0038] When the filter plate 8 is clogged after long-term use, the handles 2301 are pulled to both sides to make the connecting rod 2304 move in the No. 1 through groove 24, and at the same time drive the connecting plate 2302 to move in the rebound groove 26, so that the No. 2 spring 2303 contracts and makes the positioning rod 2305 escape from the positioning hole 20 to unlock the position of the filter plate 8. At this time, the contracted No. 1 spring 22 drives the top plate 21 to move to one side through the elastic force, and pushes the filter plate 8 out of the mounting frame 7 through the top plate 21, so as to realize the rapid disassembly of the filter plate 8. When the filter plate 8 is cleaned and replaced, the filter plate 8 is embedded in the mounting frame 7 again. When the positioning hole 20 and the positioning rod 2305 are on the same horizontal line, the handle 2301 is released. At this time, the connecting plate 2302, under the action of the No. 2 spring 2303, pushes the positioning rod 2305 to embed into the positioning hole 20 to lock the position of the filter plate 8, so as to realize the rapid installation and fixation of the filter plate 8.

[0039] Working principle: The locking mechanism 23 is designed to realize the rapid locking and unlocking of the filter plate 8. At the same time, the top plate 21 and the No. 1 spring 22 are used to push the filter plate 8 out of the mounting frame 7, so as to realize the rapid and labor-saving installation and removal of the filter plate 8. At the same time, the agglomerated coal powder is re-grinded into powder by the crushing wheel 13 and the filter screen 14, and the finer coal powder is screened out for a second time through the screen 15 to prevent the weight of the coal powder from increasing after agglomeration and affecting pneumatic conveying.

[0040] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pulverized coal pneumatic conveying device, comprising a silo (1) and a protection box (6), characterized in that: A feeding box (9) is fixedly provided on one side of the center of the upper end surface of the silo (1); a crushing box (12) is fixedly provided on the upper end surface of the inner wall of the silo (1); a filter screen (14) is fixedly provided on the inner wall of the crushing box (12) near the lower end; a crushing wheel (13) is rotatably provided at the center of the upper end surface of the filter screen (14); fixed plates (18) are fixedly provided on both sides of the inner wall of the silo (1) near the lower end; telescopic rods (16) are fixedly provided on the upper end surfaces of the two fixed plates (18); sieve plates (17) are fixedly provided on the upper end surfaces of the two telescopic rods (16); a sieve screen (15) is fixedly provided at the center of the sieve plate (17); a rotating shaft (28) is fixedly provided on the inner wall of the silo (1) near the front and rear ends; a rotating block (27) is fixedly sleeved at the center of the outer wall of the rotating shaft (28); and a feeding pipe (5) is fixedly provided at the center of the bottom end surface of the silo (1); A conveying pipe (3) is fixedly arranged on one side of the protection box (6), a fan (19) is fixedly arranged at the center of the bottom end surface of the inner wall of the protection box (6), and a mounting frame (7) is fixedly arranged on the other side of the protection box (6). A top plate (21) and a filter plate (8) are slidably connected to the inner wall of the mounting frame (7), and a No. 1 spring (22) is fixedly arranged near the four corners on one side of the top plate (21). Positioning holes (20) are opened at the center of the front and rear end surfaces of the filter plate (8) near the upper and lower ends. The front and rear ends of the outer wall of the mounting frame (7) are A No. 1 through slot (24) is provided at the center, a rebound slot (26) is provided on one side of the inner wall of the two No. 1 through slots (24), a No. 2 through slot (25) is provided through the center of the opposite side of the two rebound slots (26) near the upper and lower ends, and a locking mechanism (23) is movably provided in the two rebound slots (26), and the two locking mechanisms (23) include a handle (2301), a connecting plate (2302), two No. 2 springs (2303), a connecting rod (2304) and two positioning rods (2305).

2. The coal powder pneumatic conveying device according to claim 1, characterized in that: The two connecting rods (2304) are respectively fixedly arranged at the center of the opposite side of the two handles (2301), the two connecting plates (2302) are respectively fixedly arranged at the opposite side of the two connecting rods (2304), the four No. 2 springs (2303) are respectively fixedly arranged at the center of the one side away from the two connecting plates (2302) close to the upper and lower ends, and the four positioning rods (2305) are respectively fixedly arranged at the center of the opposite side of the two connecting plates (2302) close to the upper and lower ends.

3. The coal powder pneumatic conveying device according to claim 1, characterized in that: The four positioning rods (2305) respectively penetrate the four No. 2 through grooves (25) and are respectively embedded in the four positioning holes (20); the two connecting rods (2304) respectively penetrate the two No. 1 through grooves (24); the two connecting plates (2302) are respectively slidably arranged in the two rebound grooves (26); and one end of the four No. 2 springs (2303) is respectively fixedly arranged on the inner walls of the two rebound grooves (26) away from the center of one side and close to the upper and lower ends.

4. The coal powder pneumatic conveying device according to claim 1, characterized in that: A first motor (2) is fixedly arranged at the rear end of the lower end of the outer wall of the silo (1), a second motor (11) is fixedly arranged at the center of the upper end surface of the silo (1), the rotating shaft (28) is fixedly connected to the output end of the first motor (2), and the crushing wheel (13) is fixedly connected to the output end of the second motor (11).

5. The coal powder pneumatic conveying device according to claim 1, characterized in that: The upper end surface of the filter screen (14) is conical and concave toward the center, and the upper and lower end surfaces of the crushing wheel (13) are both conical and convex, and the angle of the conical concave of the filter screen (14) is greater than the angle of the conical convex of the crushing wheel (13).

6. The coal powder pneumatic conveying device according to claim 1, characterized in that: The output end of the fan (19) is fixedly connected to the material conveying pipe (3), and the feed discharge pipe (5) passes through the outer wall of the material conveying pipe (3) near the upper end.

7. The coal powder pneumatic conveying device according to claim 1, characterized in that: Four brackets (4) are fixedly provided on the bottom end surface of the silo (1), and a box door (10) is hingedly provided on one side of the upper end surface of the feeding box (9).

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