Safe deslagging device for thermal power plant boiler

Abstract

The invention discloses a safe deslagging device for a thermal power plant boiler, and relates to the technical field of safe deslagging of thermal power plant boilers. The scattering unit comprises a first motor, a rotating shaft, a driving assembly, a conveying assembly and a stirring assembly; the anti-leakage unit comprises a sliding door and a connecting rod. According to the device, the first motor drives deslagging, blocking prevention, stirring and cooling at the same time. And when deslagging begins, waste residues can be actively dredged and conveyed, the waste residues falling into the box bottom can be synchronously turned over and flattened, and the deslagging efficiency and the initial cooling efficiency are greatly improved. Through lifting motion of the stirring assembly, opening of the slag discharging opening and closing of the slag discharging pipe channel are automatically triggered. Therefore, during deslagging, the high-temperature reaction kettle is effectively isolated from the inside of the deslagging box, leakage of high-temperature or toxic gas is prevented, and heat loss of the boiler body is reduced.

Description

Technical Field

[0001] This invention relates to safe ash removal technology for thermal power plant boilers, and more particularly to a safe ash removal device for thermal power plant boilers. Background Technology

[0002] During operation, thermal power plant boilers generate a large amount of high-temperature slag. The timely, safe, and efficient removal of this slag is crucial for ensuring the stable operation of the boiler system. Traditional slag removal methods mostly rely on gravity flow or hydraulic flushing, which have many inherent drawbacks.

[0003] First, slag is highly susceptible to blockage in the slag discharge pipes during the discharge process. High-temperature slag has a certain stickiness, and especially when not cooled properly, it easily adheres to the pipe walls and accumulates, eventually leading to poor slag discharge or even complete blockage. This not only severely affects the normal operation of the boiler, but the unblocking operation is also a high-intensity and dangerous task with significant safety risks. Second, effectively isolating the boiler body (reactor) from the external environment during slag discharge is a critical safety issue. Traditional gate valves have limited sealing capabilities; when opened for slag discharge, high-temperature or toxic gases inside the boiler may leak, threatening the personal safety of operators and the workshop environment. Simultaneously, prolonged opening of the slag discharge port also leads to significant heat loss from the boiler body, reducing energy efficiency. Furthermore, if the discharged high-temperature waste slag is not cooled promptly and evenly in the collection container (such as the slag discharge box), it will form "hot spots" due to localized overheating. These hot spots not only damage the slag discharge box structure and shorten equipment lifespan, but the prolonged accumulation of high-temperature waste slag also poses a risk of burns or scalding, and is detrimental to subsequent transportation and processing. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is: the problem of easy blockage and heat accumulation during safe ash discharge from existing thermal power plant boilers.

[0005] The above-mentioned technical problems are solved by the following technical solution: The present invention proposes a safe ash discharge device for a thermal power plant boiler, which includes an ash discharge unit including an ash discharge box, a fixed frame fixedly installed on the top of the ash discharge box, and a reaction vessel fixedly installed on the top of the fixed frame; The slag discharge box is equipped with a dispersing unit and a leak prevention unit. The slag discharge box is equipped with a heat dissipation unit inside; The dispersing unit includes a first motor fixedly installed on the top of the slag discharge box, a rotating shaft fixedly installed on the output end of the first motor, a drive assembly fixedly installed on the bottom of the rotating shaft, a conveying assembly rotatably installed on the bottom of the reactor, and a stirring assembly fixedly installed on the bottom of the conveying assembly. The leak prevention unit includes a sliding door slidably installed on the upper end of the slag discharge box and a connecting rod fixedly installed on the side of the sliding door near the inside of the slag discharge box.

[0006] In a preferred embodiment of the safe ash discharge device for thermal power plant boilers according to the present invention: the conveying assembly includes a spiral plate hinged to the bottom axis of the reactor, and a rotating rod fixedly disposed inside the axis of the spiral plate.

[0007] In a preferred embodiment of the thermal power plant boiler safety ash removal device of the present invention: the driving component includes a first gear fixedly disposed at the bottom of the rotating shaft and a second gear fixedly disposed on the periphery of the rotating rod.

[0008] In a preferred embodiment of the safe ash removal device for thermal power plant boilers according to the present invention: the stirring assembly includes an electric telescopic rod fixedly installed at the bottom of the rotating rod, a connecting plate fixedly installed at the output end of the electric telescopic rod, a connecting rod fixedly installed at the bottom of the connecting plate, and a stirring rod fixedly installed on the circumferential surface of the connecting rod.

[0009] In a preferred embodiment of the safe slag discharge device for thermal power plant boilers of the present invention: a slag discharge pipe is fixedly installed between the slag discharge box and the reaction vessel; The first gear meshes with the second gear; The spiral plate is in contact with the inner wall of the slag discharge pipe.

[0010] In a preferred embodiment of the safe ash discharge device for thermal power plant boilers according to the present invention: the anti-leakage unit further includes an inclined rod fixedly installed on the side of the movable door near the inside of the ash discharge box, a slide rail fixedly installed on the top of the inner wall of the ash discharge box, a sealing plate slidably installed inside the slide rail, a through rod fixedly installed on the side of the sealing plate away from the rotating rod, and an inclined block fixedly installed on the end of the through rod away from the sealing plate.

[0011] In a preferred embodiment of the safe ash discharge device for thermal power plant boilers of the present invention: the end of the connecting rod away from the movable door is in contact with the top of the connecting plate; The sides of the inclined rod that are in contact with the inclined block are all set as inclined surfaces; A spring is provided between the movable door and the slag discharge box; A spring is also provided between the sealing plate and the slide rail.

[0012] In a preferred embodiment of the safe ash removal device for thermal power plant boilers according to the present invention: the heat dissipation unit includes a ventilation pipe fixedly installed on the right side of the ash removal box, a pair of rotating columns rotatably installed on the inner wall of the ash removal box, a transmission belt connected to each set of rotating columns, a transmission rod with one end fixedly installed on the surface of the movable door and the other end fixedly installed on the side of the transmission belt away from the ventilation pipe, and a sliding plate fixedly installed on the side of the transmission belt away from the transmission rod.

[0013] In a preferred embodiment of the safe ash removal device for thermal power plant boilers of the present invention: the heat dissipation unit 4 further includes a fixing plate fixedly installed inside the ventilation pipe, a second motor fixedly installed on the side of the fixing plate near the inside of the ash removal box, and fan blades fixedly installed at the output end of the second motor.

[0014] In a preferred embodiment of the safe ash discharge device for thermal power plant boilers described in this invention: the sliding plate contacts the inner wall of the ash discharge box; An air inlet is located on the left side of the slag discharge box.

[0015] The beneficial effects of this invention are as follows: This device enables the first motor to simultaneously drive slag discharge, prevent blockage, and stir for cooling. At the start of slag discharge, it not only actively clears and transports waste slag but also simultaneously tumbles and flattens the waste slag that has fallen to the bottom of the tank, greatly improving slag discharge efficiency and initial cooling efficiency. The lifting and lowering movement of the stirring assembly automatically triggers the opening of the slag discharge port and the closing of the slag discharge pipe channel. This ensures that during slag discharge, the high-temperature reactor and the interior of the slag discharge box are effectively isolated, preventing leakage of high-temperature or toxic gases, while also reducing heat loss from the boiler body.

[0016] After the slag discharge operation is completed, this device can automatically start air cooling and self-clean the box. This process is automatically triggered by the closing action of the slag discharge port. The movement of the sliding plate opens the air outlet on one side of the ventilation pipe and the air inlet on the left side of the slag discharge box, forming a ventilation channel. At the same time or shortly thereafter, the second motor can be started via a limit switch, driving the fan blades to rotate and draw in external cold air to force-cool the empty slag discharge box, preparing it for the next operation. As the sliding plate moves in contact with the inner wall of the slag discharge box, it can scrape off the residual waste residue adhering to the box wall, achieving self-cleaning. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Wherein: Figure 1 A schematic diagram of the overall structure of the thermal power plant boiler safety ash removal device of the present invention is shown. Figure 2This invention illustrates a three-dimensional cross-sectional view of the safe ash removal device for thermal power plant boilers according to the present invention. Figure 3 A cross-sectional schematic diagram of the disintegration unit structure of the present invention is shown; Figure 4 A schematic diagram of the connection relationship between the enclosed plate and the slide rail of the present invention is shown; Figure 5 A cross-sectional schematic diagram of the heat dissipation device structure of the present invention is shown. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0019] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0020] Reference Figures 1-5 This embodiment provides a safe ash removal device for a thermal power plant boiler, including an ash removal unit 1 comprising an ash removal box 11, a fixing frame 12 fixedly installed on the top of the ash removal box 11, and a reaction vessel 13 fixedly installed on the top of the fixing frame 12. The slag discharge box 11 is equipped with a dispersing unit 2 and a leak prevention unit 3. The slag discharge box 11 is equipped with a heat dissipation unit 4 inside; The dispersing unit 2 includes a first motor 21 fixedly installed on the top of the slag discharge box 11, a rotating shaft 22 fixedly installed on the output end of the first motor 21, a drive assembly 23 fixedly installed on the bottom of the rotating shaft 22, a conveying assembly 24 rotatably installed on the bottom of the reactor 13, and a stirring assembly 25 fixedly installed on the bottom of the conveying assembly 24. The anti-leakage unit 3 includes a movable door 31 that is slidably installed on the upper end of the slag discharge box 11, and a connecting rod 32 that is fixedly installed on the side of the movable door 31 near the inside of the slag discharge box 11.

[0021] Furthermore, the conveying assembly 24 includes a spiral plate 241 hinged to the bottom axis of the reactor 13, and a rotating rod 242 fixedly disposed inside the axis of the spiral plate 241.

[0022] Furthermore, the drive assembly 23 includes a first gear 231 fixedly disposed at the bottom of the rotating shaft 22 and a second gear 232 fixedly disposed on the periphery of the rotating rod 242.

[0023] Furthermore, the stirring assembly 25 includes an electric telescopic rod 251 fixedly installed at the bottom of the rotating rod 242, a connecting plate 252 fixedly installed at the output end of the electric telescopic rod 251, a connecting rod 253 fixedly installed at the bottom of the connecting plate 252, and a stirring rod 254 fixedly installed on the circumferential surface of the connecting rod 253.

[0024] Furthermore, a slag discharge pipe 5 is fixedly installed between the slag discharge box 11 and the reaction vessel 13; The first gear 231 meshes with the second gear 232; Spiral plate 241 is in contact with the inner wall of slag discharge pipe 5.

[0025] In this embodiment, the slag discharge box 11 is a cubic or cylindrical welded box structure with an opening at the top and a slag discharge door on the lower part of one side wall. A portal frame 12, made of welded steel, is fixed to its top by welding or bolts, spanning the opening at the top of the box to form a stable support structure. The reactor 13 is a pressure vessel with a tapered neck at the bottom, fixed to the top beam of the portal frame 12 by flanges or welding, so that the axis of the reactor 13 roughly coincides with the axis of the slag discharge box 11. The slag discharge pipe 5 is a short, vertically arranged pipe, with its upper flange connected to the tapered outlet flange at the bottom of the reactor 13, and its lower flange connected to the slag inlet flange at the top of the slag discharge box 11.

[0026] Preferably, the first motor 21 is a vertically mounted geared motor, with its base bolted to the top panel of the slag discharge box 11, and its output shaft extending vertically downwards into the slag discharge box. The rotating shaft 22 is a solid long shaft, the top of which is coaxially fixedly connected to the output shaft of the first motor 21 via a coupling. This rotating shaft passes through the bearing seat at the top of the slag discharge box, relying on the bearing for radial support and smooth rotation.

[0027] Preferably, the first motor 21 is fixedly installed on the top of the slag discharge box 11, the rotating shaft 22 is fixedly installed on the output end of the first motor 21, the first gear 231 is fixedly installed on the bottom of the rotating shaft 22, the rotating rod 242 is rotatably installed on the bottom of the reactor 13, the spiral plate 241 is fixedly installed on the circumferential surface of the rotating rod 242, the second gear 232 is fixedly installed on the circumferential surface of the rotating rod 242, the electric telescopic rod 251 is fixedly installed on the bottom of the rotating rod 242, the connecting plate 252 is fixedly installed on the output end of the electric telescopic rod 251, the connecting rod 253 is fixedly installed on the bottom of the connecting plate 252, and the stirring rod 254 is fixedly installed on the circumferential surface of the connecting rod 253. By rotating the spiral plate 241 continuously inside the slag discharge pipe 5, the waste residue and solid matter accumulated inside the reactor 13 can be effectively stirred and pushed into the slag discharge box 11, thereby improving the slag discharge efficiency, reducing the slag accumulation time, and effectively preventing the waste residue from clogging in the slag discharge pipe.

[0028] A slag discharge pipe 5 is fixedly installed between the slag discharge box 11 and the reactor 13. The first gear 231 and the second gear 232 mesh, and the spiral plate 241 contacts the inner wall of the slag discharge pipe 5. The meshing ensures that the first gear 231 can drive the second gear 232 to rotate while rotating, and the contact ensures that the spiral plate 241 can prevent blockage.

[0029] During operation: Simultaneously with the waste residue entering the slag discharge box 11 from inside the reactor 13 via the slag discharge pipe 5, the first motor 21 is started, causing the first motor 21 to drive the rotating shaft 22 to rotate. The rotation of the rotating shaft 22 drives the first gear 231 to rotate, which in turn drives the second gear 232 to rotate. The rotation of the second gear 232 drives the rotating rod 242 to rotate, which in turn drives the spiral plate 241 to rotate. The spiral plate 241 rotates continuously inside the slag discharge pipe 5, effectively stirring and pushing the accumulated waste residue and solid matter inside the reactor 13 into the slag discharge box 11, thereby improving slag discharge efficiency, reducing slag accumulation time, and effectively preventing blockage of the slag discharge pipe, ensuring the normal operation of the slag discharge system.

[0030] As the rotating rod 242 rotates, it drives the spiral plate 241 to rotate, which in turn drives the electric telescopic rod 251 to start rotating. While rotating, the electric telescopic rod 251 pushes the connecting plate 252 to start moving downward and rotating. The movement of the connecting plate 252 drives the connecting rod 253 to start moving downward and rotating. The movement of the connecting rod 253 drives the stirring rod 254 to start moving downward and rotating. When the stirring rod 254 moves downward and contacts the bottom of the inner wall of the slag discharge box 11, the electric telescopic rod 251 stops pushing the connecting plate 252. Then the stirring rod 254 continues to rotate and stir the waste residue or waste material inside the slag discharge box 11, which can make the waste residue more evenly distributed throughout the entire slag discharge box 11. This can increase the contact area between the waste residue and the cooling medium, thereby improving the heat transfer efficiency, accelerating the cooling of the waste residue, and preventing the waste residue in some areas from becoming too hot and causing hot spots.

[0031] In summary, this device achieves simultaneous drive of the first motor for slag discharge anti-clogging and stirring cooling. At the start of slag discharge, it not only actively clears and transports waste slag, but also simultaneously tumbles and flattens the waste slag that has fallen to the bottom of the tank, greatly improving slag discharge efficiency and initial cooling efficiency. The lifting and lowering movement of the stirring components automatically triggers the opening of the slag discharge port and the closing of the slag discharge pipe channel. During slag discharge, the high-temperature reactor and the interior of the slag discharge box are effectively isolated, preventing the leakage of high-temperature or toxic gases, while also reducing heat loss from the boiler body.

[0032] Reference Figures 1-5In a preferred embodiment, the anti-leakage unit 3 further includes an inclined rod 33 fixedly installed on the side of the movable door 31 near the interior of the slag discharge box 11, a slide rail 34 fixedly installed on the top of the inner wall of the slag discharge box 11, a sealing plate 35 slidably installed inside the slide rail 34, a through rod 36 fixedly installed on the side of the sealing plate 35 away from the rotating rod 242, and an inclined block 37 fixedly installed on the end of the through rod 36 away from the sealing plate 35.

[0033] Furthermore, the end of the connecting rod 32 away from the sliding door 31 contacts the top of the connecting plate 252; The surfaces of the inclined rod 33 and the inclined block 37 that come into contact with each other are both set as inclined surfaces; A spring is installed between the sliding door 31 and the slag discharge box 11; A spring is also provided between the enclosed plate 35 and the slide rail 34.

[0034] Furthermore, the heat dissipation unit 4 includes a ventilation pipe 41 fixedly installed on the right side of the slag discharge box 11, a pair of rotating columns 42 rotatably installed on the inner wall of the slag discharge box 11, a transmission belt 43 connected to each set of rotating columns 42, a transmission rod 44 with one end fixedly installed on the surface of the movable door 31 and the other end fixedly installed on the side of the transmission belt 43 away from the ventilation pipe 41, and a sliding plate 45 fixedly installed on the side of the transmission belt 43 away from the transmission rod 44.

[0035] Furthermore, the heat dissipation unit 4 also includes a fixing plate 46 fixedly installed inside the ventilation pipe 41, a second motor 47 fixedly installed on the side of the fixing plate 46 near the inside of the slag discharge box 11, and a fan blade 48 fixedly installed at the output end of the second motor 47.

[0036] Furthermore, the sliding plate 45 contacts the inner wall of the slag discharge box 11; An air inlet is provided on the left side of the slag discharge box 11.

[0037] In this embodiment, the end of the connecting rod 32 away from the moving door 31 contacts the top of the connecting plate 252. The sides of the inclined rod 33 and the inclined block 37 that contact each other are both set as inclined surfaces. A spring is provided between the moving door 31 and the slag discharge box 11, and a spring is provided between the sealing plate 35 and the slide rail 34. The contact ensures that the connecting plate 252 can drive the connecting rod 32 when it moves. The inclined surface ensures that the inclined rod 33 can smoothly push the inclined block 37 when it moves. The spring provided here ensures that the moving door 31 can achieve self-reset. The spring provided here ensures that the sealing plate 35 can achieve self-reset.

[0038] Preferably, the ventilation pipe 41 is fixedly installed on the right side of the slag discharge box 11, and two rotating columns 42 are rotatably installed on the inner wall of the slag discharge box 11. The two rotating columns 42 are connected by a transmission belt 43. One end of the transmission rod 44 is fixedly installed on the surface of the inclined rod 33, and the other end of the transmission rod 44 is fixedly installed on the side of the transmission belt 43 away from the ventilation pipe 41. The sliding plate 45 is fixedly installed on the side of the transmission belt 43 away from the transmission rod 44. By moving the sliding plate 45 upward, the air outlet between the ventilation pipe 41 and the slag discharge box 11 and the air inlet on the other side of the slag discharge box 11 are opened. This can promote air flow, accelerate heat dissipation, and the entry of cold air can take away more heat, making the waste slag cool down faster. At the same time, it increases the flow of surrounding air and reduces the overall temperature of the waste slag to meet the requirements of slag discharge and subsequent treatment.

[0039] Preferably, the fixing plate 46 is fixedly installed inside the ventilation pipe 41, the second motor 47 is fixedly installed on the side of the fixing plate 46 near the inside of the slag discharge box 11, and the fan blade 48 is fixedly installed at the output end of the second motor 47. The rotation of the fan blade 48 starts to blow air outward through the ventilation pipe 41, accelerating the air circulation inside the slag discharge box 11, promoting rapid heat conduction and dissipation, improving the heat dissipation efficiency of the waste slag, and effectively reducing the concentration of potentially harmful gases in the waste slag, providing a safer working environment and reducing health risks to operators. The sliding plate 45 contacts the inner wall of the slag discharge box 11, and an air inlet is provided on the left side of the slag discharge box 11. Contact ensures that the sliding plate 45 can control the opening and closing of the air outlet, and the air inlet ensures normal ventilation.

[0040] During operation: After the waste residue cools down, the stirring rod 254 stops stirring, and then the electric telescopic rod 27 starts, driving the connecting plate 252 to move upward. The movement of the connecting plate 252 drives the connecting rod 253 to move upward, which in turn drives the stirring rod 254 to move upward. Simultaneously, the connecting plate 252 contacts and drives the connecting rod 32 to move upward. The movement of the connecting rod 32 drives the moving door 31 to move upward, opening the slag discharge port at the front of the slag discharge box 11. At this time, the operator opens the slag discharge box 11 to discharge the waste residue. Slag discharge is carried out only after the waste residue has completely cooled down, reducing the potential danger of high-temperature materials to operators, avoiding burns and other safety accidents, and improving the safety of the working environment. Meanwhile, the waste residue... Complete cooling before ash removal helps protect the boiler and its components, extending equipment lifespan. As the sliding door 31 moves upward to open the ash removal port, it simultaneously moves the inclined rod 33 upward. The inclined rod 33 then contacts and pushes the inclined block 37 to move. The inclined block 37 then moves the through rod 34, which in turn moves the closing plate 35. The movement of the closing plates 35 on both sides closes the channel between the ash removal box 11 and the ash removal pipe 5, effectively isolating the high-temperature gas inside the boiler and preventing gas leakage during ash removal. This improves operational safety, reduces danger to operators, and effectively reduces heat loss from the boiler, maintaining a relatively stable temperature during ash removal and improving energy efficiency.

[0041] After the cooled waste residue is cleaned up, the sliding door 31 moves back to its original position under the action of the spring, causing the inclined rod 33 to move downward. Simultaneously, the inclined rod 33 moves downward, causing the transmission rod 44 to begin moving downward. The movement of the transmission rod 44 causes the transmission belt 43 to begin rotating around the rotating column 42. The rotation of the transmission belt 43 causes the sliding plate 45 to begin moving upward. The upward movement of the sliding plate 45 opens the air outlet between the ventilation pipe 41 and the slag discharge box 11, as well as the air inlet on the other side of the slag discharge box 11. This promotes airflow and accelerates heat dissipation. The entry of cold air can remove more heat, making the waste residue more... The system rapidly cools the waste residue while increasing airflow to lower the overall temperature, thus meeting the requirements for slag discharge and subsequent processing. As the slide plate 45 moves upward to open the ventilation opening, the second motor 47 starts, driving the fan blades 48 to rotate. The rotating fan blades 48 then blow air outward through the ventilation pipe 41, accelerating airflow inside the slag discharge box 11, promoting rapid heat conduction and dissipation, improving the heat dissipation efficiency of the waste residue, and cooling it down faster. At the same time, it effectively reduces the concentration of potentially harmful gases in the waste residue, providing a safer working environment and reducing health risks for operators.

[0042] In summary, after the slag discharge operation is completed, this device can automatically start air cooling and perform self-cleaning of the box. This process is automatically triggered by the closing action of the slag discharge port. The movement of the sliding plate opens the air outlet on one side of the ventilation pipe and the air inlet on the left side of the slag discharge box, forming a ventilation channel. At the same time or shortly thereafter, the second motor can be started via a limit switch, driving the fan blades to rotate and drawing in external cold air to force-cool the empty slag discharge box, preparing it for the next operation. As the sliding plate moves in contact with the inner wall of the slag discharge box, it can scrape off the residual waste residue adhering to the box wall, achieving self-cleaning.

[0043] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A safety ash discharge device for a thermal power plant boiler, characterized in that: include, The slag discharge unit (1) includes a slag discharge box (11), a fixed frame (12) fixedly installed on the top of the slag discharge box (11), and a reaction vessel (13) fixedly installed on the top of the fixed frame (12). The slag discharge box (11) is equipped with a dispersing unit (2) and a leak prevention unit (3). The slag discharge box (11) is equipped with a heat dissipation unit (4). The dispersing unit (2) includes a first motor (21) fixedly installed on the top of the slag discharge box (11), a rotating shaft (22) fixedly installed on the output end of the first motor (21), a drive assembly (23) fixedly installed on the bottom of the rotating shaft (22), a conveying assembly (24) rotatably installed on the bottom of the reactor (13), and a stirring assembly (25) fixedly installed on the bottom of the conveying assembly (24). The anti-leakage unit (3) includes a movable door (31) slidably installed on the upper end of the slag discharge box (11) and a connecting rod (32) fixedly installed on the side of the movable door (31) near the inside of the slag discharge box (11).

2. The safe ash discharge device for thermal power plant boilers according to claim 1, characterized in that: The conveying assembly (24) includes a spiral plate (241) hinged to the bottom axis of the reactor (13) and a rotating rod (242) fixedly disposed inside the axis of the spiral plate (241).

3. The safe ash discharge device for thermal power plant boilers according to claim 2, characterized in that: The drive assembly (23) includes a first gear (231) fixedly disposed at the bottom of the rotating shaft (22) and a second gear (232) fixedly disposed on the periphery of the rotating rod (242).

4. The safe ash discharge device for thermal power plant boilers according to claim 3, characterized in that: The stirring assembly (25) includes an electric telescopic rod (251) fixedly installed at the bottom of the rotating rod (242), a connecting plate (252) fixedly installed at the output end of the electric telescopic rod (251), a connecting rod (253) fixedly installed at the bottom of the connecting plate (252), and a stirring rod (254) fixedly installed on the circumference of the connecting rod (253).

5. The safe ash discharge device for thermal power plant boilers according to claim 4, characterized in that: A slag discharge pipe (5) is fixedly installed between the slag discharge box (11) and the reaction vessel (13). The first gear (231) meshes with the second gear (232); The spiral plate (241) is in contact with the inner wall of the slag discharge pipe (5).

6. The safe ash discharge device for thermal power plant boilers according to claim 5, characterized in that: The anti-leakage unit (3) further includes a sloping rod (33) fixedly installed on the side of the movable door (31) near the inside of the slag discharge box (11), a slide rail (34) fixedly installed on the top of the inner wall of the slag discharge box (11), a sealing plate (35) slidably installed inside the slide rail (34), a through rod (36) fixedly installed on the side of the sealing plate (35) away from the rotating rod (242), and a sloping block (37) fixedly installed on one end of the through rod (36) away from the sealing plate (35).

7. The safe ash discharge device for thermal power plant boilers according to claim 6, characterized in that: The end of the connecting rod (32) away from the movable door (31) contacts the top of the connecting plate (252); The sides of the inclined rod (33) and the inclined block (37) that are in contact with each other are both set as inclined surfaces; A spring is provided between the movable door (31) and the slag discharge box (11); A spring is also provided between the sealing plate (35) and the slide rail (34).

8. The safety ash discharge device for thermal power plant boilers according to claim 7, characterized in that: The heat dissipation unit (4) includes a ventilation pipe (41) fixedly installed on the right side of the slag discharge box (11), a pair of rotating columns (42) rotatably installed on the inner wall of the slag discharge box (11), a transmission belt (43) connected to each set of rotating columns (42), a transmission rod (44) with one end fixedly installed on the surface of the movable door (31) and the other end fixedly installed on the side of the transmission belt (43) away from the ventilation pipe (41), and a sliding plate (45) fixedly installed on the side of the transmission belt (43) away from the transmission rod (44).

9. The safe ash discharge device for thermal power plant boilers according to claim 8, characterized in that: The heat dissipation unit 4 also includes a fixing plate (46) fixedly installed inside the ventilation pipe (41), a second motor (47) fixedly installed on the side of the fixing plate (46) near the inside of the slag discharge box (11), and a fan blade (48) fixedly installed at the output end of the second motor (47).

10. The safe ash discharge device for thermal power plant boilers according to claim 9, characterized in that: The sliding plate (45) contacts the inner wall of the slag discharge box (11); An air inlet is provided on the left side of the slag discharge box (11).

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