Coal storage device for thermal power plant

Abstract

The invention discloses a coal storage device for a thermal power plant, which comprises a drum-type coal bunker arranged on the ground, and further comprises a material taking bunker arranged below the drum-type coal bunker and used for taking out coal stored in the drum-type coal bunker; the top plate is arranged above the drum type coal bunker and used for protecting the drum type coal bunker; the feeding barrel is arranged on the outer wall of the barrel type coal bunker and used for discharging materials into the barrel type coal bunker; the screening unit is arranged at the feeding barrel and used for screening the coal conveyed to the barrel type coal bunker by the feeding barrel; according to the barrel type coal bunker, the coal materials are stored in the barrel type coal bunker, a traditional open-air stacking or simple coal shed storage mode is abandoned, the coal materials are accurately screened according to the particle size and conveyed into the corresponding barrel type coal bunker, the coal materials are conveyed into the barrel type coal bunker, and the coal materials are conveyed into the barrel type coal bunker. The multi-stage screening mode can effectively separate coal materials with different particle sizes, and the fine management level of coal material storage is improved.

Description

Technical Field

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

[0002] Thermal power plants are one of the main sources of electricity production in my country, relying on large quantities of coal as fuel. Coal storage is a critical step in the thermal power plant production process, directly impacting power generation efficiency, cost control, and environmental protection. However, traditional coal storage methods present numerous challenges and urgently require improvement and optimization.

[0003] Traditional coal storage primarily involves open-air stacking or simple coal sheds. Open-air stacking is susceptible to weathering, leading to moisture, weathering, and spontaneous combustion. This not only reduces the coal's calorific value but also increases coal loss. Furthermore, open-air stacking requires significant land resources and is inefficient in coal loading, unloading, and transportation.

[0004] The above content is only used to assist in understanding the technical solution of the present invention and does not mean that the above content is the closest prior art. Summary of the Invention

[0005] The present invention aims to provide a coal storage device for a thermal power plant to solve the problems raised in the above-mentioned background technology. To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a coal storage device for a thermal power plant, comprising a cylindrical coal bunker arranged on the ground, and further comprising: A take-out silo is provided below the cylindrical coal bunker and is used to take out the coal stored in the cylindrical coal bunker; A roof plate is provided above the cylindrical coal bunker to protect against rain; A feeding cylinder is provided on the outer wall of the cylindrical coal bunker and is used for feeding materials into the cylindrical coal bunker; A screening unit is provided at the feeding cylinder and is used for screening the coal delivered by the feeding cylinder to the cylindrical coal bunker; A ventilation mechanism is provided on the top of the cylindrical coal bunker and is used for ventilation inside the cylindrical coal bunker; an anti-oxidation mechanism, disposed inside the cylindrical coal bunker and used for delivering inert gas into the cylindrical coal bunker; Wherein, the screening unit comprises: A screening box is fixedly arranged on the outer wall of the cylindrical coal bunker, and the discharge of the feed cylinder is connected to the top of the screening box; A plurality of screening plates are movably connected to the inner wall of the screening box and move along the vertical direction of the screening box to screen out coal of different sizes; A plurality of coal conveying pipes are respectively connected to the outer wall of the screening box, one side of which is corresponding to the screening plate, and the other side is connected to the cylindrical coal bunker, for conveying coal of different sizes into the corresponding cylindrical coal bunker.

[0006] Preferably, the screening unit further comprises: A plurality of connecting blocks are provided on one side of the top of each of the sieve plates and are used to connect the sieve plates; A plurality of material guide blocks are symmetrically arranged on the other side of the top of the screening plate, and are used to guide the screened material into the coal conveying pipe; A base, connected to the bottom of the lowest screening plate, and provided with an electric vibrator at the bottom of the base, for vibrating the base to drive the screening plate to move vertically in the screening box; The two upper screening plates are respectively provided with a plurality of rectangular feed holes, and the upper rectangular feed holes are larger than the lower rectangular feed holes, and the rectangular feed holes are used to screen coal of different sizes; The movable mechanism is arranged on the screening plate and is used for protruding the screening plate when moving up and down on the screening plate to prevent small coal materials from following large coal materials into the coal conveying pipe.

[0007] Preferably, the movable mechanism includes: A plurality of arc-shaped rods are fixedly connected to the inner wall of the screening box to block the coal; A plurality of movable grooves are provided on the upper surfaces of the two upper screening plates, and the arc-shaped rods move in the movable grooves and prevent the small coal from sliding down when extending out of the screening plate surface; A push block is provided in the rectangular feed hole and is used for squeezing the coal stuck in the rectangular feed hole to dredge the rectangular feed hole; A rectangular groove is provided on one side of the inner wall of the rectangular feeding hole, and the push block moves in the rectangular groove; A plurality of push rods are connected to one side of the push block close to the movable groove and movably extend through the movable groove to move.

[0008] Preferably, a reset spring is provided on the outer wall of the push rod to reset the push block to retract and move into the rectangular groove. The push rod is spherically arranged on the side away from the push block and fits with the outer wall of the arc rod. When the arc rod moves upward, the squeeze push rod pushes the push block out of the rectangular groove, which is used to squeeze the coal stuck in the rectangular feeding hole.

[0009] Preferably, the ventilation mechanism includes: A ventilation cylinder is provided on the top of the cylindrical coal bunker, and an opening is provided at the connection; A lower ventilation plate is fixedly arranged below the inner wall of the ventilation cylinder; The upper ventilation plate is movably arranged on the inner wall of the ventilation cylinder and cooperates with the lower ventilation plate to perform gas exchange inside the cylindrical coal bunker; A spring is provided between the lower ventilation plate and the upper ventilation plate, and is used to pull the bristles provided at the bottom of the upper ventilation plate downward to move toward the lower ventilation plate to unclog the lower ventilation plate; A rotating rod is rotatably connected to the axis of the lower ventilation plate and moves upward to penetrate the upper ventilation plate; a motor, fixedly connected to the bottom of the top plate, with an output end of the motor connected to the rotating rod, for driving the rotating rod to rotate; The fan blades are mounted on the outer wall of the rotating rod and rotate to drive the gas in the cylindrical coal bunker to flow outwards.

[0010] Preferably, the ventilation mechanism further comprises: An activated carbon adsorption block is provided above the upper ventilation plate and is used to adsorb dust in the cylindrical coal bunker; The limiting groove is provided on the outer wall of the rotating rod and is symmetrically arranged on the circumference with the same path at both ends; Two cylindrical sliders are symmetrically arranged on the inner wall of the upper ventilation plate and slide on the inner wall of the limiting groove.

[0011] Preferably, the antioxidant mechanism comprises: A plurality of air guide pipes are fixedly arranged on the inner wall of the cylindrical coal bunker, and the tops of the air guide pipes are fixedly passed through the upper part of the cylindrical coal bunker and extend outwards; an inert gas generator, installed on the top of the cylindrical coal bunker and connected to the extension of the air guide pipe, for inputting inert gas into the air guide pipe and releasing it into the cylindrical coal bunker; Support column, connected between the top plate and the inert gas generator.

[0012] Preferably, the antioxidant mechanism further comprises: A plurality of rotating shafts are rotatably connected to the interior of the air guide tube, and the outer wall thereof is connected to the outer wall via a pulley assembly; A brush is fixedly mounted on the outer wall of the rotating shaft, with the other side of the brush being in contact with the inner wall of the air duct, and is used to remove coal dust attached to the air holes of the air duct; The second pulley group is transmission-connected to one of the rotating shafts and the outer wall of the rotating rod.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention employs multiple screening plates and coal conveying pipes to precisely screen coal according to particle size and deliver it to the corresponding cylindrical coal bunker. This multi-stage screening method effectively separates coal of different particle sizes, improving the refined management of coal storage. The movable mechanism, through the coordination of curved rods and push blocks, automatically clears the rectangular feed holes on the screening plates, preventing coal blockage and ensuring the continuity and efficiency of the screening process. An electric vibrator drives the screening plates up and down, promoting rapid sliding of the coal across the plates and further improving screening efficiency.

[0014] 2. This invention uses a motor to drive the fan blades to rotate, generating negative pressure. This draws air outward from the cylindrical coal bunker, ensuring air circulation within the bunker and preventing coal from agglomerating or spontaneously combusting due to moisture. Activated carbon adsorption blocks absorb dust from the air, achieving centralized dust reduction, reducing environmental pollution from coal dust and protecting the equipment from erosion. The upward and downward movement of the upper ventilation plate drives the brush bristles to unclog the lower ventilation plate, preventing blockage and ensuring effective ventilation. Simultaneously, a vibration mechanism shakes dust off the surfaces of the adsorption blocks and ventilation plates, extending the service life of the equipment.

[0015] 3. The present invention introduces inert gas into the cylindrical coal bunker through an inert gas generator to replace the air, reduce the oxygen content, inhibit the oxidation reaction of the coal, reduce the risk of spontaneous combustion of the coal, and extend the storage period of the coal. At the same time, the rotating shaft drives the brush to rotate, brushing off the coal ash on the air holes of the air guide pipe to prevent the air holes from being blocked, ensuring that the inert gas can be evenly distributed in the cylindrical coal bunker. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the back structure of the present invention; Figure 3 This is a schematic diagram of the roof separation structure of a single cylindrical coal bunker according to the present invention; Figure 4 This is a cross-sectional view of a single cylindrical coal bunker of the present invention; Figure 5 Schematic diagram of the cross section of the antioxidant structure of the present invention; Figure 6 Schematic cross-sectional view of the ventilation mechanism of the present invention; Figure 7 Schematic diagram of the cross section of the screening box; Figure 8 This is the internal structure diagram of the screening box; Figure 9 It is a schematic diagram of the structure of the activity mechanism; Figure 10 This is a schematic diagram of the disassembled state of the sliding structure.

[0017] Figure numerals: 1. Cylindrical coal bunker; 2. Feeding bin; 3. Top plate; 4. Feeding barrel; 5. Screening unit; 51. Screening box; 52. Screening plate; 53. Coal conveying pipe; 54. Guide block; 55. Connecting block; 56. Base; 57. Movable mechanism; 571. Arc rod; 572. Movable groove; 573. Push block; 574. Rectangular groove; 575. Push rod; 6. Ventilation mechanism; 61. Ventilation cylinder; 62. Lower ventilation plate; 63. Upper ventilation plate; 64. Spring; 65. Bristles; 66. Cylindrical slider; 67. Rotating rod; 68. Motor; 69. Fan blades; 691. Activated carbon adsorption block; 692. Limiting groove; 7. Anti-oxidation mechanism; 71. Air guide pipe; 72. Rotating shaft; 73. Brush; 74. Inert gas generator; 75. Pillar. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0019] See also Figure 1-10 The present invention provides a technical solution: a coal storage device for a thermal power plant, comprising a cylindrical coal bunker 1 arranged on the ground, and further comprising: The take-out silo 2 is provided below the cylindrical coal bunker 1 and is used to take out the coal stored in the cylindrical coal bunker 1; A roof 3 is provided above the cylindrical coal bunker 1 to protect against rain; The feeding tube 4 is provided on the outer wall of the cylindrical coal bunker 1 and is used for unloading coal into the cylindrical coal bunker 1. A conveyor belt is provided in the feeding tube 4 and extends to the stockpile at an inclined angle. The coal temporarily unloaded and piled in the stockpile is then transported to the screening unit 5 for screening via the conveyor belt. The screening unit 5 is provided at the feeding drum 4 and is used for screening the coal delivered by the feeding drum 4 to the cylindrical coal bunker 1; The ventilation mechanism 6 is provided on the top of the cylindrical coal bunker 1 and is used for ventilation inside the cylindrical coal bunker 1; The anti-oxidation mechanism 7 is provided inside the cylindrical coal bunker 1 and is used to transport inert gas into the cylindrical coal bunker 1; Wherein, the screening unit 5 comprises: The screening box 51 is fixedly arranged on the outer wall of the cylindrical coal bunker 1, and the discharge of the feed cylinder 4 is connected to the top of the screening box 51; A plurality of screening plates 52 are movably connected to the inner wall of the screening box 51 and move vertically along the screening box 51 to screen out coal of different sizes; Multiple coal conveying pipes 53 are respectively connected to the outer wall of the screening box 51, one side is set corresponding to the screening plate 52, and the other side is connected to the cylindrical coal bunker 1, which is used to transport coal of different sizes into the corresponding cylindrical coal bunker 1. A conveyor belt can be set in the coal conveying pipe 53.

[0020] The screening unit 5 also includes: A plurality of connecting blocks 55 are provided on one side of the top of each screening plate 52 and are used to connect the screening plates 52; A plurality of guide blocks 54 are symmetrically arranged on the other side of the top of the screening plate 52 to guide the screened material into the coal conveying pipe 53; A base 56 is connected to the bottom of the lowest screening plate 52, and an electric vibrator is provided at the bottom of the base 56 for vibrating the base 56 to drive the screening plate 52 to move vertically in the screening box 51; The two upper screening plates 52 are respectively provided with a plurality of rectangular feed holes, and the upper rectangular feed holes are larger than the lower rectangular feed holes. The rectangular feed holes are used to screen coals of different sizes. The movable mechanism 57 is provided on the screening plate 52 and is used to protrude from the screening plate 52 when the screening plate 52 moves up and down, thereby preventing small coal materials from following large coal materials into the coal conveying pipe 53.

[0021] In addition, the activity mechanism 57 includes: A plurality of arc-shaped rods 571 are fixedly connected to the inner wall of the screening box 51 to block the coal; A plurality of movable grooves 572 are provided on the upper surfaces of the two upper screening plates 52, and arc-shaped rods 571 move in the movable grooves 572, and when extending out of the surface of the screening plates 52, they prevent small coal from sliding down; The push block 573 is provided in the rectangular feed hole and is used to squeeze the coal stuck in the rectangular feed hole to clear the rectangular feed hole; A rectangular groove 574 is provided on one side of the inner wall of the rectangular blanking hole, and the push block 573 moves in the rectangular groove 574; A plurality of push rods 575 are connected to one side of the push block 573 close to the movable groove 572 and movably extend through the movable groove 572 to move.

[0022] A reset spring is provided on the outer wall of the push rod 575, which is used to reset the push block 573 to retract and move into the rectangular groove 574. The push rod 575 is spherically arranged on the side away from the push block 573 and fits with the outer wall of the arc rod 571. When the arc rod 571 moves upward, the push rod 575 is squeezed to push the push block 573 out of the rectangular groove 574, which is used to squeeze the coal stuck in the rectangular feeding hole.

[0023] In addition, the ventilation mechanism 6 includes: The ventilation cylinder 61 is provided on the top of the cylindrical coal bunker 1, and the connection is opened; The lower ventilation plate 62 is fixedly arranged below the inner wall of the ventilation cylinder 61; The upper ventilation plate 63 is movably mounted on the inner wall of the ventilation cylinder 61 and cooperates with the lower ventilation plate 62 to exchange gas inside the cylindrical coal bunker 1; The spring 64 is provided between the lower ventilation plate 62 and the upper ventilation plate 63 and is used to pull the bristles 65 provided at the bottom of the upper ventilation plate 63 downward to move toward the lower ventilation plate 63 to clear the lower ventilation plate 62; The rotating rod 67 is rotatably connected to the axis of the lower ventilation plate 62 and moves upward to penetrate the upper ventilation plate 62; The motor 68 is fixedly connected to the bottom of the top plate 3, and the output end of the motor 68 is connected to the rotating rod 67 for driving the rotating rod 67 to rotate; The fan blades 69 are mounted on the outer wall of the rotating rod 67 and rotate to drive the gas in the cylindrical coal bunker 1 to flow outward.

[0024] The ventilation mechanism 6 further includes: The activated carbon adsorption block 691 is provided above the upper ventilation plate 63 and is used to adsorb dust in the cylindrical coal bunker 1; The limiting groove 692 is provided on the outer wall of the rotating rod 67 and is symmetrically arranged on the circumference with the same path at both ends; The two cylindrical sliders 66 are symmetrically arranged on the inner wall of the upper ventilation plate 63 and slide on the inner wall of the limiting groove 692.

[0025] Finally, antioxidant mechanisms 7 include: A plurality of air guide pipes 71 are fixedly mounted on the inner wall of the cylindrical coal bunker 1, and the tops thereof are fixedly passed through the upper portion of the cylindrical coal bunker 1 and extend outwards; The inert gas generator 74 is installed on the top of the cylindrical coal bunker 1 and is connected to the extension of the air guide pipe 71. It is used to input inert gas into the air guide pipe 71 and release it into the cylindrical coal bunker 1. The support 75 is connected between the top plate 3 and the inert gas generator 74 .

[0026] Antioxidant mechanism 7 also includes: A plurality of rotating shafts 72 are rotatably connected to the interior of the air guide tube 71, and the outer wall thereof is connected to the air guide tube 71 through a pulley assembly. The brush 73 is fixedly mounted on the outer wall of the rotating shaft 72 and has its other side in contact with the inner wall of the air duct 71, and is used to remove soot adhering to the air holes of the air duct 71; The second pulley set is transmission-connected between one of the rotating shafts 72 and the outer wall of the rotating rod 67 .

[0027] Working principle: When coal is stored, the coal is conveyed along the feed drum 4 to its discharge port through a conveyor belt and enters the screening box 51. The electric vibrator at the bottom of the base 56 is started, and at the same time, the screening plate 52, the guide block 54 and the connecting block 55 are driven to vibrate up and down in the screening box 51. The coal is screened on the screening plate 52 according to the particle size. The coal with larger particle size enters the corresponding cylindrical coal bunker 1 through the coal conveying pipe 53, while the coal with smaller particle size enters the lower screening plate 52 through the rectangular discharge hole on the screening plate 52 for further screening and enters the corresponding cylindrical coal bunker 1. The curved rod 571 intermittently extends from the surface of the screening plate 52 to prevent small-sized coal from sliding into the coal conveying pipe 53 along with large-sized coal, thereby achieving precise screening. During the screening process, when the screening plate 52 moves up and down, the push rod 575 contacts and displaces the curved rod 571, pushing the push block 573 out of the rectangular slot 574, shrinking the rectangular feed hole and crushing the coal stuck in the hole to prevent the feed hole from being blocked. At the same time, when the screening plate 52 moves down, the squeezing of the push rod 575 by the curved rod 571 disappears, and under the action of the reset spring, the push block 573 returns to the rectangular slot 574. This process is repeated to ensure the continuity and efficiency of the screening process. During the coal storage process, the motor 68 is started to drive the rotating rod 67 to rotate, which drives the fan blades 69 to rotate to generate negative pressure. The gas inside the cylindrical coal bunker 1 is extracted outward through the ventilation cylinder 61, and the activated carbon adsorption block 691 adsorbs dust in the gas to achieve centralized dust reduction. At the same time, the rotation of the rotating rod 67 drives the limiting groove 692 to rotate, and the cylindrical slider 66 slides in the limiting groove 692, pulling the upper ventilation plate 63 up and down. Under the action of the spring 64, the upper ventilation plate 63 falls quickly, vibrating the activated carbon adsorption block 691 and the upper ventilation plate 63 to shake off the attached dust and improve the adsorption effect. In addition, the up and down movement of the upper ventilation plate 63 drives the brush bristles 65 to dredge the lower ventilation plate 62 to avoid blockage, thereby ensuring the ventilation effect. When the rotating rod 67 rotates, the rotating shaft 72 connected to it is driven to rotate through the pulley group 2, and then the three rotating shafts 72 are synchronously driven to rotate through the pulley group 1, thereby driving the brush 73 to rotate, brushing off the coal dust on the air holes of the air guide pipe 71 to prevent blockage. The inert gas generator 74 is started regularly to introduce inert gas into the cylindrical coal bunker 1 through the air guide pipe 71 to replace the air, reduce the oxygen content, inhibit the oxidation reaction of the coal, reduce the risk of spontaneous combustion of the coal, and extend the storage period of the coal.

Claims

1. A coal storage device for a thermal power plant, comprising a cylindrical coal bunker (1) arranged on the ground, characterized in that: Also includes: A material taking bin (2) is provided below the cylindrical coal bunker (1) and is used for taking out coal stored in the cylindrical coal bunker (1); A top plate (3) is provided above the cylindrical coal bunker (1) and is used for protecting the cylindrical coal bunker (1); A feeding cylinder (4) is provided on the outer wall of the cylindrical coal bunker (1) and is used for feeding materials into the cylindrical coal bunker (1); A screening unit (5) is provided at the feeding cylinder (4) and is used for screening the coal delivered by the feeding cylinder (4) to the cylindrical coal bunker (1); A ventilation mechanism (6) is provided on the top of the cylindrical coal bunker (1) and is used for ventilation inside the cylindrical coal bunker (1); an anti-oxidation mechanism (7) disposed inside the cylindrical coal bunker (1) and used for conveying inert gas into the cylindrical coal bunker (1); Wherein, the screening unit (5) comprises: A screening box (51) is fixedly arranged on the outer wall of the cylindrical coal bunker (1), and the discharge point of the feeding cylinder (4) is connected to the upper part of the screening box (51); A plurality of screening plates (52) are movably connected to the inner wall of the screening box (51) and move vertically along the screening box (51) to screen out coal materials of different sizes; A plurality of coal conveying pipes (53) are respectively connected to the outer wall of the screening box (51), one side of which is corresponding to the screening plate (52) and the other side is connected to the cylindrical coal bunker (1), and is used to convey coal materials of different sizes into the corresponding cylindrical coal bunker (1).

2. A coal storage device for a thermal power plant according to claim 1, characterized in that: The screening unit (5) further comprises: A connecting block (55) is provided on one side of the top of each screening plate (52) for connecting the screening plates (52); A plurality of material guide blocks (54) are symmetrically arranged on the other side of the top of the screening plate (52) and are used to guide the screened material into the coal conveying pipe (53); A base (56) is connected to the bottom of the lowest screening plate (52), and an electric vibrator is provided at the bottom of the base (56) for vibrating the base (56) to drive the screening plate (52) to move vertically in the screening box (51); A plurality of rectangular feed holes are respectively provided on the two upper screening plates (52), and the upper rectangular feed holes are larger than the lower rectangular feed holes, and the rectangular feed holes are used to screen coals of different sizes; The movable mechanism (57) is arranged on the screening plate (52) and is used to protrude from the screening plate (52) when the screening plate (52) moves up and down, so that coal materials with different diameters enter the corresponding coal conveying pipe (53).

3. A coal storage device for a thermal power plant according to claim 2, characterized in that: Coal of different sizes includes: small coal, medium coal and large coal. Among them, coal with a diameter less than 25mm is small coal, coal with a diameter of 25-50mm is medium coal, and coal with a diameter of more than 50mm is large coal. The diameter of the upper rectangular blanking hole is 50 mm, and the diameter of the lower rectangular blanking hole is 25 mm.

4. A coal storage device for a thermal power plant according to claim 3, characterized in that: The movable mechanism (57) comprises: A plurality of arc-shaped rods (571) are fixedly connected to the inner wall of the screening box (51) and are used to block coal; A plurality of movable grooves (572) are provided on the upper surfaces of the two upper screening plates (52), and the arc-shaped rods (571) are movable in the movable grooves (572) and prevent small coal materials from sliding down when extending out of the surfaces of the screening plates (52); A push block (573) is arranged in the rectangular feed hole and is used to squeeze the coal stuck in the rectangular feed hole to clear the rectangular feed hole; A rectangular groove (574) is provided on one side of the inner wall of the rectangular feed hole, and the push block (573) moves in the rectangular groove (574); A plurality of push rods (575) are connected to one side of the push block (573) close to the movable groove (572), and extend through and into the movable groove (572) to move.

5. A coal storage device for a thermal power plant according to claim 4, characterized in that: The outer wall of the push rod (575) is provided with a reset spring for resetting the push block (573) to shrink and move into the rectangular groove (574). The push rod (575) is spherically arranged on one side away from the push block (573) and fits with the outer wall of the arc rod (571). When the arc rod (571) moves upward, the push rod (575) is squeezed to push the push block (573) out of the rectangular groove (574) to squeeze the coal stuck in the rectangular feeding hole.

6. A coal storage device for a thermal power plant according to claim 5, characterized in that: The ventilation mechanism (6) comprises: A ventilation cylinder (61) is provided on the top of the cylindrical coal bunker (1), and an opening is provided at the connection; A lower ventilation plate (62) is fixedly arranged below the inner wall of the ventilation cylinder (61); An upper ventilation plate (63) is movably arranged on the inner wall of the ventilation cylinder (61) and cooperates with the lower ventilation plate (62) to perform gas exchange inside the cylindrical coal bunker (1); A spring (64) is provided between the lower ventilation plate (62) and the upper ventilation plate (63) and is used to pull the bristles (65) provided on the bottom of the upper ventilation plate (63) downward to move toward the lower ventilation plate (63) to clear the lower ventilation plate (62); A rotating rod (67) is rotatably connected to the axis of the lower ventilation plate (62) and moves upward to penetrate the upper ventilation plate (62); a motor (68) fixedly connected to the bottom of the top plate (3), and an output end of the motor (68) connected to the rotating rod (67) for driving the rotating rod (67) to rotate; The fan blades (69) are mounted on the outer wall of the rotating rod (67) and rotate to drive the gas in the cylindrical coal bunker (1) to flow outward.

7. A coal storage device for a thermal power plant according to claim 6, characterized in that: The ventilation mechanism (6) further comprises: An activated carbon adsorption block (691) is arranged above the upper ventilation plate (63) and is used to adsorb dust in the cylindrical coal bunker (1); The limiting groove (692) is provided on the outer wall of the rotating rod (67) and is symmetrically arranged on the circumference with the same path at both ends; Two cylindrical sliders (66) are symmetrically arranged on the inner wall of the upper ventilation plate (63) and slide on the inner wall of the limiting groove (692).

8. A coal storage device for a thermal power plant according to claim 7, characterized in that: The antioxidant mechanism (7) comprises: A plurality of air guide pipes (71) are fixedly arranged on the inner wall of the cylindrical coal bunker (1), and the tops thereof are fixedly passed through the upper part of the cylindrical coal bunker (1) and extend outwards; an inert gas generator (74), installed on the top of the cylindrical coal bunker (1) and connected to the extension of the air guide pipe (71), for inputting inert gas into the air guide pipe (71) and releasing it into the cylindrical coal bunker (1); The support (75) is connected between the top plate (3) and the inert gas generator (74).

9. A coal storage device for a thermal power plant according to claim 8, characterized in that: The anti-oxidation mechanism (7) further comprises: A plurality of rotating shafts (72) are rotatably connected to the interior of the air guide tube (71), and the outer wall thereof is connected to the air guide tube (71) through a belt pulley assembly; A brush (73) is fixedly mounted on the outer wall of the rotating shaft (72), and the other side of the brush is in contact with the inner wall of the air guide tube (71), and is used to brush away the soot attached to the air holes of the air guide tube (71); The second pulley group is transmission-connected to one of the rotating shafts (72) and the outer wall of the rotating rod (67).

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