Coal conveying device for thermal power plant

Abstract

The invention relates to the technical field of coal conveying, and discloses a coal conveying device for a thermal power plant, which comprises a frame body, a conveying belt is arranged between the inner walls of the two sides of the frame body, a plurality of supporting frames are fixed on the top of the frame body through bolts, and a liquid separation pipe is rotatably connected between the inner walls of the two sides of each supporting frame. A plurality of evenly-distributed atomizing nozzles are fixed to the bottom of the liquid distribution pipe through threads, a connecting pipe is fixed to the outer wall of one side of each supporting frame through a bolt and communicates with one end of the liquid distribution pipe, and a coal briquette position adjusting mechanism is arranged between the inner walls of the two sides of the bottom ends of the multiple supporting frames. According to the coal briquette smashing device, the liquid distribution pipe and the atomization nozzles are arranged, the atomization nozzles spray water, so that coal briquettes are wetted, the surfaces of the coal briquettes are wetted, the purpose of reducing dust is achieved, the coal briquettes are not prone to combustion due to the fact that the coal briquettes are wetted, the temperature rise of the coal briquettes is slow when the coal briquettes are smashed, and the safety of coal briquette smashing is improved.

Description

Technical Field

[0001] The invention relates to the technical field of coal transportation, in particular to a coal transportation device for a thermal power plant. Background Art

[0002] A thermal power plant is the abbreviation of a thermal power plant. It is a factory that uses combustibles as fuel to produce electricity. The commonly used combustible is coal.

[0003] At present, the coal used in thermal power plants is pulverized coal, which is formed by crushing coal blocks. Before the coal blocks are transported to the crushing site, they are transported by conveying equipment. However, dust is generated during the transportation of the coal blocks on the conveying equipment. At the same time, during the crushing process, the crushing of the coal blocks will generate mobile heat, which can easily make the temperature of the coal blocks too high, making the coal powder flammable, thus posing a fire hazard. Summary of the invention

[0004] Technical issues solved

[0005] In view of the shortcomings of the prior art, the present invention provides a coal conveying device for a thermal power plant, which is mainly used to solve the problem that dust is generated during the transportation of coal blocks on the conveying equipment. At the same time, during the crushing process, the crushing of the coal blocks will generate mobile heat, which can easily make the temperature of the coal blocks too high, resulting in flammable coal powder, thus posing a fire hazard.

[0006] Technical Solution

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A coal conveying device for a thermal power plant comprises a frame, a conveyor belt is arranged between the inner walls on both sides of the frame, a plurality of supports are fixed to the top of the frame by bolts, a liquid dispensing pipe is rotatably connected between the inner walls on both sides of the supports, a plurality of evenly distributed atomizing nozzles are fixed to the bottom of the liquid dispensing pipe by threads, a connecting pipe is fixed to the outer wall of one side of the frame by bolts, and the connecting pipe is connected to one end of the liquid dispensing pipe, a mechanism for adjusting and positioning coal blocks is arranged between the inner walls on both sides of the bottom ends of the plurality of supports, a screening mechanism for screening coal blocks is arranged at the unloading end of the frame, a speed reducing mechanism for slowly driving the positioning mechanism to operate is arranged on one side of one of the supports, the plurality of positioning mechanisms are connected by a transmission mechanism, and a knocking mechanism for crushing coal blocks is arranged on both sides of the plurality of liquid dispensing pipes.

[0009] Furthermore, the positioning mechanism includes a rotating frame, which is rotatably connected between the inner walls of both sides of the support frame. One end of the rotating frame passes through the support frame and is provided with a connecting mechanism that drives the liquid dispensing tube to rotate.

[0010] Based on the above scheme, the connecting mechanism includes an active disk, which is fixed to one side of the rotating frame by bolts. One side of the active disk is rotatably connected to a force arm, one end of the force arm is rotatably connected to a driven disk, and the driven disk is fixed to the liquid dispensing tube.

[0011] Furthermore, the screening mechanism includes a mounting frame, which is fixed to the discharge end of the frame by bolts, and a filter plate is slidably connected between the inner walls on both sides of the mounting frame. A power component that drives the filter plate to reciprocate is provided on one side of the frame. A partition is fixed between the inner walls on both sides of the mounting frame by bolts, and the partition is located below the filter plate. A guide plate is provided at the discharge end of the frame below the conveyor belt.

[0012] On the basis of the above scheme, the power assembly includes a fixed frame, which is fixed to the inner wall of one side of the frame body by bolts, and a second motor is fixed to the top inner wall of the fixed frame by bolts, and the output shaft of the second motor passes through the fixed frame and is fixed to a turntable by bolts, and a fixed shaft is welded to the top of the turntable, and a connecting frame is welded to one side of the filter plate, a guide groove is opened on the top of the connecting frame, and the fixed shaft moves in the guide groove.

[0013] Furthermore, the reduction mechanism includes a first motor, which is fixed to one side of the support frame by bolts, and the output shaft of the first motor is fixed with a worm via a coupling, and one end of the positioning mechanism passes through the support frame and is fixed with a worm wheel by bolts, and the worm is meshed with the worm wheel.

[0014] Furthermore, the transmission mechanism includes a pulley, which is fixedly connected to one end of the positioning mechanism. The pulley is a sprocket, and a plurality of the pulleys are driven by a chain.

[0015] Furthermore, the knocking mechanism includes two connecting rods, both connecting rods are welded on one side of the liquid dispensing tube, and avoidance grooves are opened on the opposite sides of the two connecting rods, and connecting blocks are arranged in the avoidance grooves. A crushing roller is welded between the two connecting blocks, and a plurality of protrusions are welded on the circumferential outer side of the crushing roller. An elastic bushing is welded on the inner wall of one side of the two avoidance grooves, and the other end of the elastic bushing is fixed to the connecting block.

[0016] Beneficial Effects

[0017] Compared with the prior art, the present invention provides a coal conveying device for a thermal power plant, which has the following

[0018] Beneficial effects:

[0019] 1. The present invention is provided with a liquid distribution pipe and an atomizing nozzle. The atomizing nozzle sprays water to wet the coal block, making the surface of the coal block moist, thereby achieving the purpose of reducing dust. Since the coal block is wetted, it is not easy to burn, so that the temperature of the coal block rises slowly during crushing, thereby improving the safety of coal block crushing.

[0020] 2. The present invention is provided with a position adjustment mechanism. The rotation of the rotating frame will flip the coal blocks on the conveyor belt, so that the positions of the coal blocks on the bottom layer and the top layer are changed, thereby making the contact area between the coal blocks and water wider, thereby improving the wetting effect of the coal blocks.

[0021] 3. The present invention is provided with a connecting mechanism, and the diameter of the driven disk is much larger than the diameter of the driving disk, so that the driven disk can only swing back and forth, thereby making the liquid distribution pipe and the atomizing nozzle swing, thereby improving the spray range of the atomizing nozzle.

[0022] 4. The present invention is provided with a speed reduction mechanism, and the transmission of the worm gear belongs to a speed reduction transmission, so that the rotation speed of the rotating frame becomes lower, thereby preventing the coal blocks from being directly knocked off the conveyor belt, thereby improving the stability of coal block transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the left side three-dimensional structure of a coal conveying device for a thermal power plant proposed by the present invention;

[0024] Figure 2 This is a right-side three-dimensional structural schematic diagram of a coal conveying device for a thermal power plant proposed by the present invention;

[0025] Figure 3 This is an enlarged structural schematic diagram of a support frame for a coal conveying device for a thermal power plant proposed by the present invention;

[0026] Figure 4 This is a schematic cross-sectional structure diagram of a connecting rod of a coal conveying device for a thermal power plant proposed by the present invention;

[0027] Figure 5 This is a partially enlarged structural schematic diagram of a coal conveying device for a thermal power plant proposed by the present invention;

[0028] Figure 6 This is a schematic diagram of the partial exploded structure of a coal conveying device for a thermal power plant proposed by the present invention.

[0029] In the figure: 1, frame; 2, support frame; 3, mounting frame; 4, conveyor belt; 5, rotating frame; 6, liquid dispensing tube; 7, lever arm; 8, driven disk; 9, driving disk; 10, connecting pipe; 11, atomizing nozzle; 12, connecting rod; 13, first motor; 14, worm; 15, worm wheel; 16, pulley; 17, avoidance groove; 18, crushing roller; 19, protrusion; 20, connecting block; 21, elastic bushing; 22, guide plate; 23, filter plate; 24, connecting frame; 25, fixed shaft; 26, second motor; 27, fixed frame; 28, turntable; 29, partition; 30, guide groove. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Reference Figure 1-Figure 6 A coal conveying device for a thermal power plant comprises a frame 1, a conveyor belt 4 is arranged between the inner walls on both sides of the frame 1, a plurality of brackets 2 are fixed on the top of the frame 1 by bolts, a liquid dispensing pipe 6 is rotatably connected between the inner walls on both sides of the bracket 2, a plurality of evenly distributed atomizing nozzles 11 are fixed to the bottom of the liquid dispensing pipe 6 by threads, a connecting pipe 10 is fixed to the outer wall of one side of the bracket 2 by bolts, and the connecting pipe 10 is connected to one end of the liquid dispensing pipe 6, and the connecting pipe 10 is connected to an external water supply pipe, a mechanism for adjusting and positioning coal blocks is arranged between the inner walls on both sides of the bottom ends of the plurality of brackets 2, a screening mechanism for screening coal blocks is arranged at the unloading end of the frame 1, a speed reducing mechanism for slowly driving the positioning mechanism to operate is arranged on one side of one of the brackets 2, the plurality of positioning mechanisms are connected by a transmission mechanism, and a plurality of liquid dispensing pipes 6 are arranged on both sides thereof to adjust and position the coal blocks. The coal blocks are crushed by a beating mechanism. When in use, the coal blocks are placed on the conveyor belt 4, and then the transmission belt is started. The reduction mechanism drives multiple adjustment mechanisms to operate through the transmission mechanism, so as to adjust the position of the coal blocks on the conveyor belt 4. At the same time, the external water pump is started, and water is transported to the liquid separation pipe 6 through the water supply pipe and sprayed out from the atomizing nozzle 11, so as to wet the coal blocks and make the surface of the coal blocks wet, thereby achieving the purpose of reducing dust. The beating mechanism is used to knock and crush the coal blocks, so that the wetted area of ​​the coal blocks becomes larger. When the coal blocks are transported to the screening mechanism, the coal blocks are screened so that qualified coal powder can be used directly, and unqualified coal blocks are transported to the crushing equipment to improve the separation effect of the device. Since the coal blocks are wetted, they are not easy to burn, so that the temperature of the coal blocks rises slowly during crushing, thereby improving the safety of coal block crushing.

[0032] Among them, the positioning mechanism includes a rotating frame 5, which is rotatably connected between the inner walls of both sides of the support frame 2. One end of the rotating frame 5 passes through the support frame 2 and is provided with a connecting mechanism that drives the liquid distribution tube 6 to rotate. The rotation of the rotating frame 5 will flip the coal blocks on the conveyor belt 4, so that the positions of the coal blocks on the bottom and top layers will change, thereby making the contact area between the coal blocks and the water wider, thereby improving the wetting effect of the coal blocks.

[0033] Among them, the connecting mechanism includes an active disk 9, which is fixed to one side of the rotating frame 5 by bolts. One side of the active disk 9 is rotatably connected to a force arm 7, and one end of the force arm 7 is rotatably connected to a driven disk 8, and the driven disk 8 is fixed to the liquid dispensing tube 6. The rotation of the rotating frame 5 will drive the active disk 9 to rotate, thereby driving one end of the force arm 7 to rotate, thereby driving the driven disk 8 to rotate, and then driving the liquid dispensing tube 6 to rotate. Since the diameter of the driven disk 8 is much larger than the diameter of the active disk 9, the driven disk 8 can only swing back and forth, thereby causing the liquid dispensing tube 6 and the atomizing nozzle 11 to swing, thereby increasing the spray range of the atomizing nozzle 11.

[0034] Among them, the screening mechanism includes a mounting frame 3, which is fixed to the discharge end of the frame 1 by bolts, and a filter plate 23 is slidably connected between the inner walls on both sides of the mounting frame 3. A power component for driving the filter plate 23 to reciprocate is provided on one side of the frame 1. A partition 29 is fixed between the inner walls on both sides of the mounting frame 3 by bolts, and the partition 29 is located below the filter plate 23. The partition 29 can prevent coal powder from falling on the tail of the mounting frame 3. The unloading end of the frame 1 is located below the conveyor belt 4 and is provided with a guide plate 22. The guide plate 22 guides the coal blocks so that all the coal blocks can fall on the filter plate 23. The filter plate 23 is driven by the power component to reciprocate horizontally, so that the coal blocks falling on the filter plate 23 are screened. The coal powder smaller than the aperture of the filter plate 23 leakage hole will fall to the bottom, so as to facilitate direct use, and the coal blocks larger than the aperture of the filter plate 23 leakage hole will move to the tail of the mounting frame 3 along the inclined filter plate 23, and be transported to the crushing equipment, thereby improving the screening effect of the device.

[0035] Among them, the power component includes a fixing frame 27, which is fixed to the inner wall of one side of the frame body 1 by bolts, and a second motor 26 is fixed to the top inner wall of the fixing frame 27 by bolts, and the output shaft of the second motor 26 passes through the fixing frame 27 and is fixed to a turntable 28 by bolts, and a fixed shaft 25 is welded to the top of the turntable 28, and a connecting frame 24 is welded to one side of the filter plate 23, and a guide groove 30 is opened on the top of the connecting frame 24, and the fixed shaft 25 moves in the guide groove 30, and the second motor 26 is started, and the second motor 26 drives the turntable 28 to rotate, thereby driving the fixed shaft 25 to move in the guide groove 30, and then squeezing the connecting frame 24 to drive the filter plate 23 to move horizontally in the mounting frame 3, which can quickly drive the filter plate 23 to perform horizontal reciprocating motion, thereby improving the filtering effect of the filter plate 23.

[0036] Among them, the reduction mechanism includes a first motor 13, which is fixed to one side of the support frame 2 by bolts. The output shaft of the first motor 13 is fixed with a worm 14 through a coupling. A section of the rotating frame 5 passes through the support frame 2 and is fixed with a worm wheel 15 by bolts, and the worm 14 is meshed with the worm wheel 15. When the first motor 13 is started, the first motor 13 drives the worm 14 to rotate, and then drives the worm wheel 15 to rotate, thereby driving the rotating frame 5 to rotate. The transmission of the worm wheel 15 and the worm 14 is a reduction transmission, which reduces the rotation speed of the rotating frame 5, thereby avoiding the coal blocks from being directly knocked off the conveyor belt 4, thereby improving the stability of coal block transportation.

[0037] Among them, the transmission mechanism includes a pulley 16, which is keyed to the circumferential outer wall of one end of the rotating frame 5. The pulley 16 is a sprocket. Multiple pulleys 16 are driven by chains. The rotation of the rotating frame 5 will drive the pulley 16 to rotate, and the remaining pulleys 16 will rotate through the chain, thereby driving the remaining rotating frames 5 to rotate synchronously.

[0038] Among them, the knocking mechanism includes two connecting rods 12, the two connecting rods 12 are welded on one side of the liquid dispensing tube 6, the opposite sides of the two connecting rods 12 are provided with avoidance grooves 17, and a connecting block 20 is arranged in the avoidance groove 17. A crushing roller 18 is welded between the two connecting blocks 20, and a plurality of protrusions 19 are welded on the circumferential outer side of the crushing roller 18. An elastic bushing 21 is welded on the inner wall of one side of the two avoidance grooves 17, and the other end of the elastic bushing 21 is fixed to the connecting block 20. During the swinging of the liquid dispensing tube 6, the liquid dispensing tube 6 will drive the connecting rod 12 to swing synchronously, and then drive the crushing roller 18 to knock and crush the coal blocks. During the knocking of the crushing roller 18, the crushing roller 18 will drive the connecting block 20 to move in the avoidance groove 17, and the elastic bushing 21 will keep the crushing roller 18 in the middle position, so that the contact between the crushing roller 18 and the connecting rod 12 is a soft connection, thereby avoiding damage caused by a hard connection and improving the protection effect of the device.

[0039] Working principle of this embodiment: when in use, the coal blocks are placed on the conveyor belt 4, the transmission belt and the external water pump are started, water is transported to the liquid dispensing tube 6 through the water supply pipe, and sprayed out from the atomizing nozzle 11, so as to wet the coal blocks and make the surface of the coal blocks moist, thereby achieving the purpose of reducing dust, and the first motor 13 is started, the first motor 13 drives the worm 14 to rotate, and then drives the worm wheel 15 to rotate, thereby driving the rotating frame 5 to rotate, the transmission of the worm wheel 15 and the worm 14 belongs to the reduction transmission, so that the rotation speed of the rotating frame 5 becomes lower, the rotation of the rotating frame 5 will flip the coal blocks on the conveyor belt 4, so that the positions of the coal blocks on the bottom and top layers are changed, thereby making the contact area between the coal blocks and the water wider, and at the same time, the rotation of the rotating frame 5 will drive the pulley 16 to rotate, and the remaining pulleys 16 are driven to rotate through the chain, thereby driving the remaining rotating frames 5 to rotate synchronously, and the rotation of the rotating frame 5 will drive the active disk 9 to rotate, thereby driving one end of the force arm 7 to rotate, thereby driving the driven disk 8 to rotate, and then driving the liquid dispensing tube 6 to rotate, due to The diameter of the driven disk 8 is much larger than that of the active disk 9, so that the driven disk 8 can only swing back and forth, so that the liquid dispensing tube 6 and the atomizing nozzle 11 swing, and the spray range of the atomizing nozzle 11 is improved. The liquid dispensing tube 6 drives the connecting rod 12 to swing synchronously, and then drives the crushing roller 18 to knock and crush the coal blocks, and the second motor 26 is started. The second motor 26 drives the rotating disk 28 to rotate, thereby driving the fixed shaft 25 to move in the guide groove 30, and then squeezes the connecting frame 24 to drive the filter plate 23 to install. The frame 3 moves horizontally, which can quickly drive the filter plate 23 to perform horizontal reciprocating motion, and screen the coal blocks that fall on the filter plate 23. The coal powder that is smaller than the leakage hole diameter of the filter plate 23 will fall to the bottom, so that it is convenient for direct use, and the coal blocks that are larger than the leakage hole diameter of the filter plate 23 will move along the inclined filter plate 23 to the tail of the mounting frame 3, and be transported to the crushing equipment. Since the coal blocks are wetted, they are not easy to burn, so that the temperature of the coal blocks rises slowly during crushing, thereby improving the safety of coal block crushing.

[0040] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0041] In the description of this article, it should be noted that relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A coal conveying device for a thermal power plant, comprising a frame (1), a conveyor belt (4) being arranged between the inner walls on both sides of the frame (1), characterized in that: A plurality of supports (2) are fixedly connected to the top of the frame (1), a liquid dispensing tube (6) is rotatably connected between the inner walls on both sides of the supports (2), a plurality of evenly distributed atomizing nozzles (11) are fixedly connected to the bottom of the liquid dispensing tube (6) by means of threads, a connecting tube (10) is fixedly connected to the outer wall on one side of the support (2), and the connecting tube (10) is connected to one end of the liquid dispensing tube (6), a mechanism for adjusting and positioning coal blocks is provided between the inner walls on both sides of the bottom ends of the plurality of supports (2), a screening mechanism for screening coal blocks is provided at the unloading end of the frame (1), a speed reducing mechanism for slowly driving the positioning mechanism to operate is provided on one side of one of the supports (2), the plurality of positioning mechanisms are connected by means of a transmission mechanism, and a knocking mechanism for crushing coal blocks is provided on both sides of the plurality of liquid dispensing tubes (6).

2. A coal conveying device for a thermal power plant according to claim 1, characterized in that: The positioning mechanism comprises a rotating frame (5), the rotating frame (5) is rotatably connected between the inner walls of both sides of the support frame (2), and one end of the rotating frame (5) passes through the support frame (2) and is provided with a connecting mechanism for driving the liquid dispensing tube (6) to rotate.

3. A coal conveying device for a thermal power plant according to claim 2, characterized in that: The connection mechanism comprises an active disk (9), the active disk (9) being fixedly connected to one side of the rotating frame (5), one side of the active disk (9) being rotatably connected to a force arm (7), one end of the force arm (7) being rotatably connected to a driven disk (8), and the driven disk (8) being fixed to the liquid dispensing tube (6).

4. A coal conveying device for a thermal power plant according to claim 1, characterized in that: The screening mechanism comprises a mounting frame (3), the mounting frame (3) being fixedly connected to the discharge end of the frame body (1), a filter plate (23) being slidably connected between the inner walls on both sides of the mounting frame (3), a power assembly for driving the filter plate (23) to reciprocate is provided on one side of the frame body (1), a partition plate (29) is fixedly connected between the inner walls on both sides of the mounting frame (3), and the partition plate (29) is located below the filter plate (23), and a guide plate (22) is provided at the discharge end of the frame body (1) located below the conveyor belt (4).

5. A coal conveying device for a thermal power plant according to claim 4, characterized in that: The power assembly comprises a fixed frame (27), the fixed frame (27) is fixedly connected to an inner wall of one side of the frame body (1), a second motor (26) is fixedly connected to the inner wall of the top of the fixed frame (27), an output shaft of the second motor (26) passes through the fixed frame (27) and is fixedly connected to a turntable (28), a fixed shaft (25) is fixedly connected to the top of the turntable (28), one side of the filter plate (23) is fixedly connected to a connecting frame (24), a guide groove (30) is provided on the top of the connecting frame (24), and the fixed shaft (25) moves in the guide groove (30).

6. The coal conveying device for a thermal power plant according to claim 1, characterized in that: The speed reduction mechanism comprises a first motor (13), the first motor (13) is fixedly connected to one side of the support frame (2), the output shaft of the first motor (13) is fixedly connected to a worm (14), one end of the positioning mechanism passes through the support frame (2) and is fixedly connected to a worm wheel (15), and the worm (14) is meshed with the worm wheel (15).

7. The coal conveying device for a thermal power plant according to claim 1, characterized in that: The transmission mechanism comprises a pulley (16), the pulley (16) is fixedly connected to one end of the positioning mechanism, the pulley (16) is a sprocket, and a plurality of the pulleys (16) are driven by a chain.

8. The coal conveying device for a thermal power plant according to claim 1, characterized in that: The knocking mechanism comprises two connecting rods (12), the two connecting rods (12) are fixedly connected to one side of the liquid dispensing tube (6), the opposite sides of the two connecting rods (12) are provided with avoidance grooves (17), a connecting block (20) is provided in the avoidance grooves (17), a crushing roller (18) is fixedly connected between the two connecting blocks (20), a plurality of protrusions (19) are fixedly connected to the outer circumference of the crushing roller (18), an elastic bushing (21) is fixedly connected to the inner wall of one side of the two avoidance grooves (17), and the other end of the elastic bushing (21) is fixed to the connecting block (20).

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