An automatic control device for sampling incoming coal in a thermal power plant

Abstract

The present invention relates to the technical field of coal sampling for incoming plants, and discloses an automatic control device for coal sampling for incoming plants of thermal power plants, comprising a first U-shaped plate and a second U-shaped plate, wherein the second U-shaped plate is arranged on the upper side of the ground U-shaped plate, the first U-shaped plate and the second U-shaped plate are arranged in a "cross" shape, a storage shell is fixedly arranged on the upper side of the second U-shaped plate, both ends of the storage shell are fixedly connected to the inner wall of the second U-shaped plate through a connecting plate, a plurality of partitions are fixedly arranged inside the storage shell, a sampling shell is arranged on the upper side of the storage shell, a spiral roller is arranged inside the sampling shell, one end of the spiral roller is rotatably connected to the inner wall of the sampling shell, and a feed port is opened on the side wall of one end of the sampling shell away from the storage shell. The automatic control device for coal sampling for incoming plants of thermal power plants can realize the automatic operation of the entire sampling process, cannot be manually held, is easy to operate, saves time and effort, can greatly improve work efficiency, and saves manpower.

Description

Technical Field

[0001] The present invention relates to the technical field of in-plant coal sampling, and particularly to an automatic control device for in-plant coal sampling in a thermal power plant. Background Art

[0002] A thermal power plant, abbreviated as a power plant, is a factory that uses combustibles (such as coal) as fuel to produce electric energy. When pulverized coal enters a thermal power plant, it is usually necessary to sample and detect the in-plant coal because the fineness of the pulverized coal is directly related to the combustion efficiency of the boiler in the thermal power plant. Currently, the sampling of pulverized coal in thermal power plants is mainly manual sampling. The existing manual sampling operation is cumbersome, takes a long time, and is not convenient to use; moreover, different sampling positions require different sample boxes for loading. The existing manual sampling is slow and has a low degree of automation, greatly reducing the sampling efficiency.

[0003] Among them, the patent with publication number CN213812992U discloses an automatic control device for in-plant coal sampling in a thermal power plant, including a mounting frame, a sampling pipe arranged on the mounting frame, an extraction structure arranged inside the sampling pipe, and an automatic collection structure arranged at the outlet end of the sampling pipe; a control lever is fixed on the side of the mounting frame, and the sampling pipe is of an L-shaped structure. There are still defects in this technical solution:

[0004] In this technical solution, every time the sampling position is changed, it is necessary to manually move the device from one place to another, which is cumbersome, time-consuming and laborious, and the degree of automation needs to be improved. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides an automatic control device for in-plant coal sampling in a thermal power plant, which has the advantages of being able to realize the automatic operation of the whole sampling process, being unable to be held manually, being convenient to operate, saving time and effort, being able to greatly improve work efficiency and save manpower, and solving the problem that every time the sampling position is changed in the existing automatic control device for in-plant coal sampling in a thermal power plant, it is necessary to manually move the device from one place to another, which is cumbersome, time-consuming and laborious, and the degree of automation needs to be improved.

[0006] To achieve the above object, the present invention provides the following technical solution: An automatic control device for sampling incoming coal in a thermal power plant, comprising a first U-shaped plate and a second U-shaped plate. The second U-shaped plate is arranged above the first U-shaped plate. The first U-shaped plate and the second U-shaped plate are arranged in a "cross" shape. A storage shell is fixedly arranged on the upper side of the second U-shaped plate. Both ends of the storage shell are fixedly connected to the inner wall of the second U-shaped plate through connecting plates. A plurality of partition plates are fixedly arranged inside the storage shell. A sampling shell is arranged on the upper side of the storage shell. A spiral roller is arranged inside the sampling shell. One end of the spiral roller is rotatably connected to the inner wall of the sampling shell. An inlet is formed in the side wall of the sampling shell away from the storage shell, and an outlet is formed in the sampling shell close to the storage shell. A first transmission mechanism for driving the second U-shaped plate to move back and forth is arranged on the upper side of the first U-shaped plate. A second transmission mechanism for driving the sampling shell to move back and forth is arranged at the rear side of the storage shell. A driving mechanism for driving the spiral roller to rotate is arranged at the rear side of the storage shell.

[0007] Preferably, the driving mechanism includes a worm gear and a worm. Two fixing plates are fixedly arranged on the front side of the storage shell. A square rod is rotatably arranged between the two fixing plates. Two first side plates are fixedly arranged on the front side of the sampling shell. The worm is arranged between the two first side plates. A square groove is formed inside the worm. The worm is matched and sleeved with the square rod. Both ends of the worm are rotatably connected to the corresponding first side plates. A worm gear is meshed on the upper side of the worm. The worm gear is fixedly sleeved with the rear end of the spiral roller. A first motor is arranged outside one of the fixing plates. The output end of the first motor is fixedly connected to one end of the square rod.

[0008] Preferably, the first transmission mechanism includes a first lead screw and a first slide plate. The first lead screw is rotatably arranged inside the first U-shaped plate. The first slide plate is threadedly sleeved on the rod wall of the first lead screw. The upper end of the first slide plate is fixedly connected to the lower surface of the second U-shaped plate. A second motor is arranged on the front side of the first U-shaped plate. The output end of the second motor is fixedly connected to the front end of the first lead screw.

[0009] Preferably, the second transmission mechanism includes a second lead screw and a second slide plate. Second side plates are fixedly arranged at both ends of the rear side of the storage shell. The second lead screw is rotatably arranged between the two second side plates. The second slide plate is threadedly sleeved on the rod wall of the second lead screw. The upper side of the second slide plate is fixedly connected to the lower side wall of the sampling shell. A third motor is arranged outside one of the second side plates. The output end of the third motor is fixedly connected to one end of the second lead screw.

[0010] Preferably, a first limiting rod is arranged on one side of the first lead screw. Both ends of the first limiting rod are fixedly connected to the inner wall of the first U-shaped plate. One end of the first slide plate is movably sleeved on the rod wall of the first limiting rod.

[0011] Preferably, a second limiting rod is arranged on one side of the second lead screw. Both ends of the second limiting rod are fixedly connected to the corresponding second side plates. One end of the second sliding plate is movably sleeved on the rod wall of the second limiting rod.

[0012] Preferably, universal wheels are fixedly arranged on both sides of the lower surface of the first U-shaped plate.

[0013] Preferably, two vertical rods are movably sleeved on the lower side of the first U-shaped plate. Limiting plates are fixedly arranged at the bottom ends of the two vertical rods. A threaded rod is rotatably arranged on the upper side of the limiting plate. The upper end of the threaded rod is in threaded connection with the first U-shaped plate. A rotating wheel is fixedly sleeved at the lower end of the threaded rod.

[0014] Compared with the prior art, the present invention provides an automatic control device for sampling incoming coal in a thermal power plant, and has the following beneficial effects:

[0015] 1. For the automatic control device for sampling incoming coal in the thermal power plant, by driving the first lead screw to rotate with the first motor, the sampling shell can be driven into the coal pile. The second motor drives the square rod to rotate, the square rod drives the worm to rotate, and the worm drives the worm wheel to rotate, so that the spiral roller rotates for sampling. After sampling, the first motor reverses to drive the sampling shell to reset. The third motor drives the second lead screw to rotate, so that the sampling shell can move horizontally, and sampling can be carried out at different positions. That is, the whole sampling process has a high degree of automation, is convenient to operate, saves time and effort, and can greatly improve work efficiency.

[0016] 2. For the automatic control device for sampling incoming coal in the thermal power plant, through the setting of the universal wheels at the bottom of the first U-shaped plate, the device can be conveniently pushed in a time-saving and labor-saving manner. At the same time, rotating the threaded rod can drive the limiting plate to move downward. When the limiting plate moves to contact the ground, the device can be limited, so that the device can be stably used. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a top view structural schematic diagram of an automatic control device for sampling incoming coal in a thermal power plant proposed by the present invention;

[0018] Figure 2 is Figure 1 the front view structural schematic diagram of

[0019] Figure 3 is Figure 1 the enlarged view of part A structure of

[0020] Figure 4 is Figure 2 the enlarged view of part B structure of

[0021] Description of the reference numerals:

[0022] 1. First U-shaped plate, 2. Second U-shaped plate, 3. Storage shell, 4. Connecting plate, 5. Partition board, 6. Second side plate, 7. Sampling shell, 8. Screw roller, 9. Fixed plate, 10. Square rod, 11. First motor, 12. Worm gear, 13. First side plate, 14. Worm, 15. First sliding plate, 16. Second sliding plate, 17. First lead screw, 18. First limiting rod, 19. Second motor, 20. Second lead screw, 21. Second limiting rod, 22. Third motor, 23. Universal wheel, 24. Limiting plate, 25. Vertical rod, 26. Threaded rod, 27. Runner. Detailed implementation manner

[0023] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0024] Please refer to Figures 1-4 , an automatic control device for sampling incoming coal in a thermal power plant, 1. including a first U-shaped plate 1 and a second U-shaped plate 2, the second U-shaped plate 2 is arranged on the upper side of the ground U-shaped plate, the first U-shaped plate 1 and the second U-shaped plate 2 are arranged in a "cross" shape, a storage shell 3 is fixedly arranged on the upper side of the second U-shaped plate 2, both ends of the storage shell 3 are fixedly connected with the inner wall of the second U-shaped plate 2 through a connecting plate 4, a plurality of partition boards 5 are fixedly arranged inside the storage shell 3, a sampling shell 7 is arranged on the upper side of the storage shell 3, a screw roller 8 is arranged inside the sampling shell 7, one end of the screw roller 8 is rotatably connected with the inner wall of the sampling shell 7, a feed port is opened on the side wall of the end of the sampling shell 7 far from the storage shell 3, and a discharge port is opened at the end of the sampling shell 7 close to the storage shell 3. A first transmission mechanism for driving the second U-shaped plate 2 to move back and forth is arranged on the upper side of the first U-shaped plate 1, a second transmission mechanism for driving the sampling shell 7 to move back and forth is arranged at the rear side of the storage shell 3, and a driving mechanism for driving the screw roller 8 to rotate is arranged at the rear side of the storage shell 3.

[0025] The driving mechanism includes a worm gear 12 and a worm 14. Two fixed plates 9 are fixedly arranged on the front side of the storage shell 3. A square rod 10 is rotatably arranged between the two fixed plates 9. Two first side plates 13 are fixedly arranged on the front side of the sampling shell 7. The worm 14 is arranged between the two first side plates 13. A square groove is opened inside the worm 14. The worm 14 is matched and sleeved with the square rod 10. Both ends of the worm 14 are rotatably connected with the corresponding first side plates 13. A worm gear 12 is meshed on the upper side of the worm 14. The worm gear 12 is fixedly sleeved with the rear end of the screw roller 8. A first motor 11 is arranged outside one of the fixed plates 9. The output end of the first motor 11 is fixedly connected with one end of the square rod 10.

[0026] The first transmission mechanism includes a first lead screw 17 and a first sliding plate 15. The first lead screw 17 is rotatably arranged inside the first U-shaped plate 1. The first sliding plate 15 is threadedly sleeved on the rod wall of the first lead screw 17. The upper end of the first sliding plate 15 is fixedly connected to the lower surface of the second U-shaped plate 2. A second motor 19 is arranged on the front side of the first U-shaped plate 1, and the output end of the second motor 19 is fixedly connected to the front end of the first lead screw 17.

[0027] The second transmission mechanism includes a second lead screw 20 and a second sliding plate 16. Second side plates 6 are fixedly arranged at both ends of the rear side of the storage shell 3. The second lead screw 20 is rotatably arranged between the two second side plates 6. The second sliding plate 16 is threadedly sleeved on the rod wall of the second lead screw 20. The upper side of the second sliding plate 16 is fixedly connected to the lower side wall of the sampling shell 7. A third motor 22 is arranged outside one of the second side plates 6, and the output end of the third motor 22 is fixedly connected to one end of the second lead screw 20.

[0028] A first limiting rod 18 is arranged on one side of the first lead screw 17. Both ends of the first limiting rod 18 are fixedly connected to the inner wall of the first U-shaped plate 1. One end of the first sliding plate 15 is movably sleeved on the rod wall of the first limiting rod 18, so that the first sliding plate 15 cannot rotate, that is, it can slide stably.

[0029] A second limiting rod 21 is arranged on one side of the second lead screw 20. Both ends of the second limiting rod 21 are fixedly connected to the corresponding second side plates 6. One end of the second sliding plate 16 is movably sleeved on the rod wall of the second limiting rod 21, so that the second sliding plate 16 cannot rotate, that is, it can slide stably.

[0030] Universal wheels 23 are fixedly arranged on both sides of the lower surface of the first U-shaped plate 1, which facilitates the movement of the device.

[0031] Two vertical rods 25 are movably sleeved on the lower side of the first U-shaped plate 1. A limiting plate 24 is fixedly arranged at the bottom ends of the two vertical rods 25. A threaded rod 26 is rotatably arranged on the upper side of the limiting plate 24. The upper end of the threaded rod 26 is threadedly connected to the first U-shaped plate 1. A runner 27 is fixedly sleeved on the lower end of the threaded rod 26, which facilitates the fixation of the device.

[0032] In summary, when the automatic control device for sampling incoming coal of the thermal power plant is in use, the first motor 11 drives the first lead screw 17 to rotate, which can drive the sampling shell 7 into the coal pile. The second motor 19 drives the square rod 10 to rotate, the square rod 10 drives the worm 14 to rotate, and the worm 14 drives the worm wheel 12 to rotate, so that the spiral roller 8 rotates for sampling. After sampling, the first motor 11 rotates in reverse to drive the sampling shell 7 to reset. The third motor 22 drives the second lead screw 20 to rotate, which can drive the sampling shell 7 to move horizontally, so that sampling can be carried out at different positions. That is, the entire sampling process has a high degree of automation, is convenient to operate, saves time and effort, and can greatly improve work efficiency. At the same time, due to the setting of the universal wheels 23 at the bottom of the first U-shaped plate 1, the device is convenient to push in a time-saving and labor-saving manner. At the same time, rotating the threaded rod 26 can drive the limiting plate 24 to move downward. When the limiting plate 24 moves to contact the ground, the device can be limited, so that the device can be used stably.

[0033] It should be noted that the term "comprising" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic control device for sampling incoming coal in a thermal power plant, characterized in that: The invention comprises a first U-shaped plate (1) and a second U-shaped plate (2), wherein the second U-shaped plate (2) is arranged on the upper side of the ground U-shaped plate, the first U-shaped plate (1) and the second U-shaped plate (2) are arranged in a "cross" shape, a material storage shell (3) is fixedly arranged on the upper side of the second U-shaped plate (2), both ends of the material storage shell (3) are fixedly connected to the inner wall of the second U-shaped plate (2) through a connecting plate (4), a plurality of partitions (5) are fixedly arranged inside the material storage shell (3), a sampling shell (7) is arranged on the upper side of the material storage shell (3), and a sampling shell (7) is arranged inside the sampling shell (7) A spiral roller (8) is provided, one end of the spiral roller (8) is rotatably connected to the inner wall of the sampling shell (7), a feed port is provided on the side wall of the sampling shell (7) at one end away from the material storage shell (3), and a discharge port is provided on the end of the sampling shell (7) close to the material storage shell (3). A first transmission mechanism for driving the second U-shaped plate (2) to move forward and backward is provided on the upper side of the first U-shaped plate (1), a second transmission mechanism for driving the sampling shell (7) to move forward and backward is provided on the rear side of the material storage shell (3), and a driving mechanism for driving the spiral roller (8) to rotate is provided on the rear side of the material storage shell (3).

2. The automatic control device for sampling incoming coal in a thermal power plant according to claim 1, characterized in that: The driving mechanism comprises a worm wheel (12) and a worm (14); two fixed plates (9) are fixedly arranged on the front side of the material storage shell (3); a square rod (10) is rotatably arranged between the two fixed plates (9); two first side plates (13) are fixedly arranged on the front side of the sampling shell (7); the worm (14) is arranged between the two first side plates (13); a square groove is provided inside the worm (14); the worm (14) is matched and sleeved with the square rod (10); both ends of the worm (14) are rotatably connected with the corresponding first side plates (13); a worm wheel (12) is meshedly arranged on the upper side of the worm (14); the worm wheel (12) is fixedly sleeved with the rear end of the spiral roller (8); a first motor (11) is arranged on the outer side of one side of the fixed plate (9); and an output end of the first motor (11) is fixedly connected with one end of the square rod (10).

3. The automatic control device for sampling incoming coal in a thermal power plant according to claim 1, characterized in that: The first transmission mechanism comprises a first screw rod (17) and a first slide plate (15); the first screw rod (17) is rotatably arranged inside the first U-shaped plate (1); the first slide plate (15) is threadedly sleeved on the rod wall of the first screw rod (17); the upper end of the first slide plate (15) is fixedly connected to the lower surface of the second U-shaped plate (2); a second motor (19) is arranged on the front side of the first U-shaped plate (1); and the output end of the second motor (19) is fixedly connected to the front end of the first screw rod (17).

4. The automatic control device for sampling incoming coal in a thermal power plant according to claim 3 is characterized in that: A first limiting rod (18) is provided on one side of the first screw rod (17), both ends of the first limiting rod (18) are fixedly connected to the inner wall of the first U-shaped plate (1), and one end of the first sliding plate (15) is movably sleeved with the rod wall of the first limiting rod (18).

5. The automatic control device for sampling incoming coal in a thermal power plant according to claim 1, characterized in that: The second transmission mechanism comprises a second screw rod (20) and a second slide plate (16); second side plates (6) are fixedly arranged at both ends of the rear side of the material storage shell (3); the second screw rod (20) is rotatably arranged between the two second side plates (6); the second slide plate (16) is threadedly sleeved on the rod wall of the second screw rod (20); the upper side of the second slide plate (16) is fixedly connected to the lower side wall of the sampling shell (7); a third motor (22) is arranged on the outer side of one side of the second side plate (6); and the output end of the third motor (22) is fixedly connected to one end of the second screw rod (20).

6. The automatic control device for sampling incoming coal in a thermal power plant according to claim 5, characterized in that: A second limiting rod (21) is provided on one side of the second screw rod (20), both ends of the second limiting rod (21) are fixedly connected to the corresponding second side plate (6), and one end of the second sliding plate (16) is movably sleeved with the rod wall of the second limiting rod (21).

7. The automatic control device for sampling incoming coal in a thermal power plant according to claim 1, characterized in that: Universal wheels (23) are fixedly arranged on both sides of the lower surface of the first U-shaped plate (1).

8. The automatic control device for sampling incoming coal in a thermal power plant according to claim 1, characterized in that: Two vertical rods (25) are movably sleeved on the lower side of the first U-shaped plate (1), and limiting plates (24) are fixedly arranged at the bottom ends of the two vertical rods (25).

9. The automatic control device for sampling incoming coal in a thermal power plant according to claim 8, characterized in that: A threaded rod (26) is rotatably provided on the upper side of the limiting plate (24), and the upper end of the threaded rod (26) is threadedly connected to the first U-shaped plate (1).

10. The automatic control device for sampling incoming coal in a thermal power plant according to claim 9, characterized in that: A rotating wheel (27) is fixedly sleeved on the lower end of the threaded rod (26).

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