Automatic control equipment for coal preparation plant

Abstract

The utility model discloses coal preparation plant automation control equipment in the technical field of coal mine screening, which comprises a supporting seat, a conveying belt is fixedly arranged at the top of the supporting seat, a supporting plate is fixedly mounted on the right side of the supporting seat, a connecting seat is fixedly mounted on the right side of the supporting seat, and two bidirectional lead screws are rotatably connected to an inner cavity of the left side of the connecting seat. Sliding blocks are movably connected to the front sections and the rear sections of the two bidirectional lead screws in a threaded mode, a screening roller is movably hinged to the position between the left side of each sliding block and the supporting plate, a first motor is arranged, the first motor is started to drive the bidirectional lead screws to rotate, the bidirectional lead screws rotate the sliding blocks to be close to each other, and the sliding blocks drive the screening rollers to move when moving; according to the coal mine screening device, the two screening rollers are arranged, so that the distance between the two screening rollers is adjusted, coal mines can fall off at different positions when sliding off from the two screening rollers according to the size, the coal mines of different sizes are screened, the screening standard can be rapidly adjusted, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine screening, in particular to an automatic control device for a coal preparation plant. Background Art

[0002] A coal preparation plant is a coal processing plant that sorts coal, removes mineral impurities in raw coal, and divides it into products of different specifications. The main products are clean coal and lump coal, and there are also by-products such as middlings and slime.

[0003] The existing patent with the publication number CN220425924U discloses an automatic control device for a coal preparation plant, including a first conveyor belt, a second conveyor belt and a screening device. The screening device is provided with a connecting plate, and a fine screen is fixedly connected to the middle of the connecting plate. The connecting plate is inclined, and the first conveyor belt and the second conveyor belt are respectively arranged on both sides of the screening device. When the utility model is used, during the transportation of raw coal, the raw coal is screened once to screen out small particles and powders in the raw coal, so as to avoid that gravel cannot be scanned by subsequent screening and scanning equipment, thereby avoiding small particle substances such as gravel being mixed in the screened coal, and also avoiding too much coal ash covering the screening and scanning area. The color of the screening and scanning area will not change too much, making the scanning more accurate.

[0004] The existing coal preparation plants need to classify coal mines according to their specifications when transporting coal mines, so as to supply different demand chains. However, the existing coal mine screening equipment has a low screening efficiency for coal mines and needs to be improved. For this reason, we propose an automatic control device for a coal preparation plant to solve the above-mentioned problems. Summary of the Utility Model

[0005] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract and the title of the utility model of the specification, to avoid obscuring the purpose of this part, the abstract of the specification and the title of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] Therefore, the purpose of the utility model is to provide an automatic control device for a coal preparation plant, which can solve the problem that the existing coal preparation plants need to classify coal mines according to their specifications when transporting coal mines, so as to supply different demand chains, but the existing coal mine screening equipment has a low screening efficiency for coal mines and needs to be improved.

[0007] To solve the above technical problems, the present utility model provides an automatic control device for a coal preparation plant, adopting the following technical solutions: It includes a support base, on the top of which a conveyor belt is fixedly arranged. On the right side of the support base, a support plate is fixedly installed, and a connecting seat is fixedly installed on the right side of the support base. Inside the left cavity of the connecting seat, two bidirectional lead screws are rotatably connected. On the front and rear sections of the two bidirectional lead screws, sliders are threadedly movable. Between the left side of each slider and the support plate, a screening roller is movably hinged. On the right side of the support base, two feeding shells are fixedly installed. At the bottom of each of the two feeding shells, a feeding port is opened, and the feeding port is directly above the adjacent two screening rollers.

[0008] Optionally, a partition plate is fixedly installed on the left side of the two feeding shells, and the partition plate is directly above the conveyor belt.

[0009] Optionally, on the front and rear sides of the two connecting seats, a first motor is fixedly installed respectively, and the output end of the first motor is fixedly connected to one end of the adjacent bidirectional lead screw.

[0010] Optionally, a feeding box is fixedly installed on the top of the connecting seat. On the surface of the feeding box, three feeding grooves are opened, and a discharge port is opened on the front side of each feeding groove.

[0011] Optionally, between the inner walls of the front and rear sides of the inner cavity of the feeding box, a first rotating shaft, a second rotating shaft, and a third rotating shaft are rotatably connected in sequence from left to right. The first screw, the second rotating shaft, and the third rotating shaft are respectively located inside the corresponding feeding grooves.

[0012] Optionally, on the surfaces of the first rotating shaft, the second rotating shaft, and the third rotating shaft, a feeding auger is fixedly installed respectively. At the rear ends of the first rotating shaft and the second rotating shaft, a first sprocket is fixedly installed respectively. Between the two first sprockets, a first chain is provided. At the rear ends of the second rotating shaft and the third rotating shaft, a second sprocket is fixedly installed respectively. Between the two second sprockets, a second chain is provided.

[0013] Optionally, a second motor is fixedly installed on the rear side of the feeding box, and the output end of the second motor is fixedly connected to the rear end of the first rotating shaft.

[0014] In summary, the present utility model includes at least one of the following beneficial effects: 1. By setting the conveyor belt, the conveyor belt transports the coal mine through the partition plate to the surfaces of the corresponding two screening rollers to slide respectively through the two feeding shells. By setting the first motor, when the first motor starts, it drives the bidirectional lead screw to rotate. As the bidirectional lead screw rotates, the sliders move closer to each other. When the sliders move, they drive the screening rollers to move, so as to adjust the distance between the two screening rollers. When the coal mine slides on the two screening rollers according to its volume, it will fall at different positions, thus realizing the screening of coal mines with different volumes, and the screening standard can be quickly adjusted, with strong practicability.

[0015] 2. By setting the second motor, when the second motor starts, it drives the first rotating shaft to rotate. The rotation of the first rotating shaft drives the second rotating shaft to rotate through the first sprocket and the first chain. The rotation of the second rotating shaft drives the third rotating shaft to rotate through the second sprocket and the second chain. The rotation of the first rotating shaft, the second rotating shaft and the third rotating shaft drives the surface feeding auger to transport the coal in the feeding trough through the discharge port, achieving the rapid transportation of the coal after screening, which is convenient for collection. Brief Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the left side of the overall structure of the present invention;

[0019] Figure 3 For the present invention Figure 2 It is an enlarged schematic diagram of part A in

[0020] Figure 4 It is a schematic diagram of the rear side of the overall structure of the present invention.

[0021] Description of the reference numerals: 1. Support base; 2. Conveyor belt; 3. Support plate; 4. Connection seat; 5. Bi-directional lead screw; 6. Slide block; 7. Screening roller; 8. Feeding shell; 9. Feeding port; 10. Partition plate; 11. First motor; 12. Feeding box; 13. Feeding trough; 14. Discharge port; 15. First rotating shaft; 16. Second rotating shaft; 17. Third rotating shaft; 18. Feeding auger; 19. First sprocket; 20. First chain; 21. Second sprocket; 22. Second chain; 23. Second motor. Detailed Description of the Embodiments

[0022] The following will further describe the present invention in detail Figures 1-4 with reference to the attached drawings.

[0023] In Embodiment 1, referring to Figures 1-4 , in this embodiment, in order to solve the problem that in the existing coal preparation plant, when transporting coal, it is necessary to classify the coal according to the specifications and sizes and supply it to different demand chains, but the existing coal screening equipment has a low screening efficiency for coal and needs to be improved. The present invention discloses an automatic control device for a coal preparation plant.

[0024] It includes a support base 1, on the top of which a conveyor belt 2 is fixedly arranged. On the right side of the support base 1, a support plate 3 is fixedly installed. On the right side of the support base 1, a connecting seat 4 is fixedly installed. In the left inner cavity of the connecting seat 4, two bidirectional lead screws 5 are rotatably connected. On the front and rear sections of the two bidirectional lead screws 5, sliders 6 are threadedly and movably connected. Between the left side of each slider 6 and the support plate 3, a screening roller 7 is movably hinged. On the right side of the support base 1, two feeding shells 8 are fixedly installed. At the bottom of each of the two feeding shells 8, a feeding port 9 is opened, and the feeding port 9 is located directly above the adjacent two screening rollers 7.

[0025] On the left side of the two feeding shells 8, a partition plate 10 is fixedly installed, and the partition plate 10 is located directly above the conveyor belt 2.

[0026] On the front and rear sides of the two connecting seats 4, a first motor 11 is fixedly installed, and the output end of the first motor 11 is fixedly connected to one end of the adjacent bidirectional lead screw 5.

[0027] On the top of the connecting seat 4, a feeding box 12 is fixedly installed. On the surface of the feeding box 12, three feeding slots 13 are opened, and a discharge port 14 is opened on the front side of each feeding slot 13.

[0028] Between the front and rear inner side walls of the feeding box 12, a first rotating shaft 15, a second rotating shaft 16, and a third rotating shaft 17 are rotatably connected in sequence from left to right. The first rotating shaft 15, the second rotating shaft 16, and the third rotating shaft 17 are respectively located inside the corresponding feeding slots 13.

[0029] On the surfaces of the first rotating shaft 15, the second rotating shaft 16, and the third rotating shaft 17, feeding augers 18 are fixedly installed. At the rear ends of the first rotating shaft 15 and the second rotating shaft 16, first sprockets 19 are fixedly installed. Between the two first sprockets 19, a first chain 20 is provided. At the rear ends of the second rotating shaft 16 and the third rotating shaft 17, second sprockets 21 are fixedly installed. Between the two second sprockets 21, a second chain 22 is provided.

[0030] On the rear side of the feeding box 12, a second motor 23 is fixedly installed, and the output end of the second motor 23 is fixedly connected to the rear end of the first rotating shaft 15.

[0031] The specific working principle is as follows: By setting the conveyor belt 2, the conveyor belt 2 transports coal mines through the partition plate 10 to the surfaces of the corresponding two screening rollers 7 for sliding through two feeding shells 8 respectively. By setting the first motor 11, when the first motor 11 starts, it drives the bidirectional lead screw 5 to rotate. As the bidirectional lead screw 5 rotates, the sliders 6 move closer to each other. When the sliders 6 move, they drive the screening rollers 7 to move, so as to adjust the distance between the two screening rollers 7. When the coal mines slide down on the two screening rollers 7 according to their volumes, they will fall at different positions, thus realizing the screening of coal mines with different volumes. By setting the second motor 23, when the second motor 23 starts, it drives the first rotating shaft 15 to rotate. The rotation of the first rotating shaft 15 drives the second rotating shaft 16 to rotate through the first sprocket 19 and the first sprocket 19. The rotation of the second rotating shaft 16 drives the third rotating shaft 17 to rotate through the second sprocket 21 and the second chain 22. The rotation of the first rotating shaft 15, the second rotating shaft 16 and the third rotating shaft 17 drives the surface material conveying auger 18 to transport the coal mines in the feeding trough 13 through the discharge port 14, achieving the rapid transportation of the coal mines after screening, which is convenient for collection.

[0032] The wiring diagram of the motor in the present utility model belongs to the common knowledge in the field. Its working principle is already a known technology, and its model is selected according to actual use. Therefore, the control method and wiring layout of the motor will not be explained in detail.

[0033] The above are all the preferred embodiments of the present utility model, and the protection scope of the present utility model is not limited hereby. Therefore, all equivalent changes made according to the structure, shape and principle of the present utility model shall be covered within the protection scope of the present utility model.

Claims

1. An automatic control device for a coal preparation plant, comprising a support base (1), characterized in that: A conveyor belt (2) is fixedly arranged at the top of the support base (1). A support plate (3) is fixedly installed on the right side of the support base (1). A connecting seat (4) is fixedly installed on the right side of the support base (1). Two bidirectional lead screws (5) are rotatably connected to the inner cavity on the left side of the connecting seat (4). The front and rear sections of the two bidirectional lead screws (5) are both threadedly movably connected with sliders (6). A screening roller (7) is movably hinged between the left side of each slider (6) and the support plate (3). Two feeding shells (8) are fixedly installed on the right side of the support base (1). Feeding ports (9) are opened at the bottoms of the two feeding shells (8). The feeding ports (9) are located directly above the adjacent two screening rollers (7).

2. The automatic control equipment for a coal preparation plant according to claim 1, characterized in that: A partition plate (10) is fixedly installed on the left sides of the two feeding shells (8). The partition plate (10) is located directly above the conveyor belt (2).

3. The automatic control equipment for a coal preparation plant according to claim 1, characterized in that: First motors (11) are fixedly installed on the front and rear sides of the two connecting seats (4). The output ends of the first motors (11) are fixedly connected to one ends of the adjacent bidirectional lead screws (5).

4. The automatic control equipment for a coal preparation plant according to claim 1, wherein: A feeding box (12) is fixedly installed on the top of the connecting seat (4). Three feeding slots (13) are opened on the surface of the feeding box (12). A discharge port (14) is opened on the front side of each feeding slot (13).

5. The automated control equipment for a coal preparation plant according to claim 4, characterized in that: A first rotating shaft (15), a second rotating shaft (16) and a third rotating shaft (17) are rotatably connected between the inner wall on the front and rear sides of the inner cavity of the feeding box (12) from left to right in sequence. The first rotating shaft (15), the second rotating shaft (16) and the third rotating shaft (17) are respectively located inside the corresponding feeding slots (13).

6. The automatic control equipment for a coal preparation plant according to claim 5, characterized in that: Feeding augers (18) are fixedly installed on the surfaces of the first rotating shaft (15), the second rotating shaft (16) and the third rotating shaft (17). First sprockets (19) are fixedly installed at the rear ends of the first rotating shaft (15) and the second rotating shaft (16). A first chain (20) is arranged between the two first sprockets (19). Second sprockets (21) are fixedly installed at the rear ends of the second rotating shaft (16) and the third rotating shaft (17). A second chain (22) is arranged between the two second sprockets (21).

7. The automated control equipment for a coal preparation plant according to claim 6, characterized in that: A second motor (23) is fixedly installed on the rear side of the feeding box (12). The output end of the second motor (23) is fixedly connected to the rear end of the first rotating shaft (15).

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