Dredging mechanism and anti-blocking device for coal bunker of thermal power plant

Abstract

The invention relates to the technical field of coal bunker blockage prevention, in particular to a dredging mechanism which comprises a coal bunker and a first dredging assembly, the first dredging assembly comprises a plurality of guide rails and sliding parts, the guide rails are fixedly arranged on the inner wall of the coal bunker, the sliding parts are slidably arranged along the guide rails, and a plurality of scraping parts are arranged on the sliding parts; the scraping part is used for scraping the inner wall of the coal bunker to improve the fluidity of coal; and the second dredging assembly comprises a transmission part, a rotating part and a stirring part. The coal bunker dredging device has the beneficial effect that dynamic cleaning of the inner wall of a coal bunker is achieved through an inner wall scraping system composed of the guide rail, the sliding piece and the scraping part in the first dredging assembly. The scraping part slides along the guide rail, coal attached to the inner wall can be efficiently removed, and the blocking risk caused by adhesion or accumulation is remarkably reduced. Compared with a traditional manual coal poking or rapping device, the mechanism reduces damage to the inner wall through mechanical sliding action, and meanwhile optimizes the fluidity of the coal.

Description

Technical Field

[0001] The present invention relates to the technical field of coal bunker anti-blocking, in particular to a dredging mechanism and a coal bunker anti-blocking device for a thermal power plant. Background Art

[0002] As core facilities for energy supply, coal bunkers in thermal power plants play a crucial role in the storage and transportation of fuel. However, in actual operation, coal bunker blockage is a common problem. This not only disrupts the coal supply and affects the stable operation of power plant units, but also increases equipment maintenance costs and can even cause safety accidents and threaten the lives of workers. Coal blockage is primarily caused by factors such as coal viscosity, moisture content, particle size distribution, and bunker structural design. Especially in high humidity or low temperature environments, coal is prone to agglomeration and sticking to the walls, resulting in poor transport.

[0003] In the prior art, the common coal bunker blockage prevention measures used in thermal power plants mainly include manual coal poking and mechanical vibrators. Manual coal poking usually involves workers using long-pole tools to clear the coal through inspection holes at the bottom or side of the coal bunker. This method has the following drawbacks: first, it is labor-intensive, inefficient, and difficult to quickly respond to large-scale blockages; second, it has poor operational safety, and workers may face serious safety risks due to falling coal blocks or mechanical injuries; in addition, manual coal poking cannot be automated, making it difficult to adapt to the requirements of efficient and continuous operation of modern thermal power plants. Another common anti-blockage measure is the use of a vibrator, which is a mechanical vibrating device installed on the outer wall of the coal bunker to loosen the coal through vibration. However, the vibration frequency and force of the vibrator are difficult to accurately control, and long-term use may cause fatigue damage to the coal bunker wall, or even cause deformation or cracking of the coal bunker structure, thereby increasing maintenance costs and the risk of equipment failure. In addition, the vibrator has limited effect on clearing blockages at the bottom of the coal bunker or in complex structures, making it difficult to completely solve the coal blockage problem. Summary of the Invention

[0004] Therefore, the technical problems to be solved by the present invention are: it is difficult to quickly deal with large-scale blockages; secondly, the operational safety is poor, and workers may face serious safety risks due to falling coal blocks or mechanical injuries.

[0005] The above technical problems are solved by the following technical solutions: The present invention proposes a dredging mechanism, which includes a coal bin, which is a hollow structure for storing and transporting coal; a first dredging component, which includes a plurality of guide rails and sliding parts, the guide rails are fixedly arranged on the inner wall of the coal bin, the sliding parts are slidably arranged along the guide rails, and the sliding parts are provided with a plurality of scraping parts, which are used to scrape the inner wall of the coal bin to improve the fluidity of the coal; a second dredging component, which includes a transmission part, a rotating part and a stirring part, the transmission part is arranged at the bottom end of the coal bin, the rotating part is rotatably connected to the transmission part, and the stirring part is fixed on the rotating part, which is used to stir the coal at the bottom of the coal bin to promote the flow of coal. Among them, the first dredging component slides up and down along the inner wall of the coal bin through the sliding part and the scraping part to prevent the coal from being blocked at the top; the second dredging component rotates and stirs the coal at the bottom of the coal bin through the stirring part to prevent accumulation and agglomeration.

[0006] In a preferred embodiment of the dredging mechanism of the present invention: the first dredging component also includes a fixed ring, a sliding ring and a second hydraulic rod, the fixed ring is fixedly sleeved on the upper end of the coal bin, the sliding ring is slidably sleeved on the upper end of the coal bin, the second hydraulic rod is installed on the upper end of the fixed ring, the upper end of the second hydraulic rod is connected to the bottom end of the sliding ring, and the upper end of the sliding part is connected to the upper end of the sliding ring; wherein, the second hydraulic rod drives the sliding ring to slide up and down along the outer wall of the coal bin through telescopic driving, driving the sliding part and the scraping part to move along the guide rail to scrape the inner wall of the coal bin.

[0007] In a preferred embodiment of the dredging mechanism of the present invention: the second dredging component also includes a ring gear, a gear, a reducer and a first servo motor, the ring gear is rotatably sleeved inside the transmission member, the top of the ring gear is connected to the bottom end of the rotating member, the gear is rotatably installed inside the transmission member and meshes with the ring gear, the reducer is installed on the bottom side of the transmission member, the output end of the reducer is transmission-connected to the gear, the first servo motor is installed on one side of the reducer, and its output end is transmission-connected to the input end of the reducer; wherein, the first servo motor drives the gear to rotate through the reducer, and the gear is meshed with the ring gear to drive the rotating member and the stirring part to rotate, thereby stirring the coal at the bottom of the coal bin.

[0008] In order to solve the above technical problems, the present invention also provides the following technical solutions: a coal bunker anti-blocking device for a thermal power plant, comprising a dredging mechanism, and a fixing part fixedly arranged at the bottom end of the coal bunker; a moving part movably arranged in the fixing part; a dispersing part arranged at the upper end of the moving part through a conductive slip ring, for dispersing the material at the bottom of the coal bunker; and a spiral part arranged on the outside of the dispersing part, for dredging the material at the bottom of the coal bunker through rotational motion.

[0009] In a preferred embodiment of the coal bunker anti-blocking device for a thermal power plant of the present invention: the moving part further includes a first hydraulic rod, a first movable seat and a second movable seat, the first movable seat is installed inside the fixed part, and the second movable seat is installed at the bottom end of the moving part.

[0010] In a preferred embodiment of the coal bunker anti-blocking device for a thermal power plant of the present invention: the first hydraulic rod is hinged between the first movable seat and the second movable seat through a pin shaft; wherein, the first hydraulic rod drives the movable part to slide up and down in the fixed part through the telescopic driving mechanism, thereby driving the dispersing part and the spiral part to move back and forth up and down, thereby dispersing the coal at the bottom of the coal bunker.

[0011] In a preferred embodiment of the coal bunker anti-blocking device for a thermal power plant of the present invention: the dispersion component also includes a second servo motor and a vibration motor, the second servo motor is installed inside the moving part, and its output end is transmission-connected to the rotating end of the conductive slip ring, and the vibration motor is embedded inside the dispersion component.

[0012] In a preferred embodiment of the coal bunker anti-blocking device for a thermal power plant of the present invention: the second servo motor drives the conductive slip ring to rotate, thereby driving the dispersion member and the spiral member to rotate, and the vibration motor generates vibration to loosen the coal particles at the bottom of the coal bunker.

[0013] In a preferred embodiment of the anti-blocking device for the coal bunker of a thermal power plant of the present invention: it also includes a screw conveyor, which is connected to the bottom end of the transmission member by bolts, and the input end of the screw conveyor is connected to the bottom end of the transmission member; wherein, the screw conveyor receives the coal loosened by the second dredging component and the third dredging component, and transports it out of the coal bunker.

[0014] In a preferred embodiment of the anti-blocking device for coal bunker of thermal power plant of the present invention, it further comprises a support frame, which is sleeved on the bottom end of the coal bunker and connected to the coal bunker; wherein the support frame provides support for the coal bunker and cooperates with the first dredging component, the second dredging component, the third dredging component and the screw conveyor to ensure stable operation of the coal bunker.

[0015] The beneficial effect of this invention lies in the fact that the inner wall scraping system, consisting of the guide rails, sliding members, and scraping parts in the first dredging assembly, achieves dynamic cleaning of the coal bunker inner wall. The scraping parts slide along the guide rails, efficiently removing coal adhering to the inner wall, significantly reducing the risk of blockage caused by adhesion or accumulation. Compared with traditional manual coal poking or vibrating devices, this mechanism reduces inner wall damage through mechanical sliding action while optimizing coal flowability.

[0016] The second dredging assembly achieves coal agitation at the bottom of the bunker through a transmission system consisting of a ring gear, gears, a speed reducer, and a first servo motor. The first servo motor, through the speed reducer, drives the gears to mesh with the ring gear, driving the rotating element and the agitator to rotate smoothly, avoiding the uncontrollable amplitude of traditional vibrators. The adjustable speed and increased torque design ensure an optimal match between agitation force and coal characteristics, significantly improving anti-clogging efficiency.

[0017] The synergistic action of the disperser and spiral element achieves integrated dispersion and extrusion of the bottom coal. The disperser is connected to the moving unit via a conductive slip ring. Combined with a second servo motor and a vibration motor, it rotates and vibrates while moving up and down, effectively dispersing the accumulated material at the bottom. The spiral element's rotation applies shearing and extrusion forces, further unblocking the material. This synergistic effect of multi-dimensional movement and vibration significantly improves anti-clogging effectiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Among them:

[0019] Figure 1 A perspective view of a first dredging component of the dredging mechanism is shown;

[0020] Figure 2 A partial enlarged view of the first dredging component of the dredging mechanism is shown;

[0021] Figure 3 Shows an exploded perspective view of the second dredging component of the dredging mechanism;

[0022] Figure 4 A schematic diagram of the third dredging component of the anti-blocking device for the coal bunker of a thermal power plant is shown;

[0023] Figure 5 A cross-sectional view of a third dredging assembly of a coal bunker anti-blocking device for a thermal power plant is shown;

[0024] Figure 6 Shows an overall stereoscopic view of a coal bunker anti-blocking device in a thermal power plant. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0026] The terms used in the present invention are those commonly used in the art in view of the functions of the present invention, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as the meanings of the terms and the overall description of the present invention.

[0027] Reference Figure 1-4This embodiment provides a dredging mechanism, including a coal bunker 1, which is a hollow structure for storing and transporting coal; a first dredging component 2, which includes a plurality of guide rails 21 and sliding members 22, the guide rails 21 are fixedly arranged on the inner wall of the coal bunker 1, the sliding members 22 are slidably arranged along the guide rails 21, and the sliding members 22 are provided with a plurality of scraping parts 23, which are used to scrape the inner wall of the coal bunker 1 to improve the fluidity of the coal; a second dredging component 3, which includes a transmission member 31, a rotating member 32 and a stirring member 33, the transmission member 31 is arranged at the bottom end of the coal bunker 1, the rotating member 32 is rotatably connected to the transmission member 31, and the stirring member 33 is fixedly arranged on the rotating member 32, for stirring the coal at the bottom of the coal bunker 1 to promote the flow of coal. Among them, the first dredging component 2 slides up and down along the inner wall of the coal bin 1 through the sliding part 22 and the scraping part 23305 to prevent the coal from being blocked at the top; the second dredging component 3 rotates and stirs the coal at the bottom of the coal bin 1 through the stirring part 33 to prevent accumulation and agglomeration.

[0028] In this embodiment, the coal bunker 1 is a hollow cylindrical structure with a space for storing coal formed inside. A feed port and a discharge port are provided at the top and bottom, which are connected to the upstream coal supply equipment and the downstream conveying equipment respectively.

[0029] The coal bunker 1 itself is a fixed structure, serving as a storage and transition carrier for the coal, and has a smooth inner wall to reduce coal adhesion.

[0030] The coal bunker 1 provides storage space for burning coal and cooperates with the first dredging component 2 through the inner wall to guide the coal to flow downstream; its bottom cooperates with the second dredging component 3 to ensure smooth discharge of the coal.

[0031] The first dredging assembly 2 consists of several guide rails 21 and sliders 22. The guide rails 21 are long metal structures, extending longitudinally along the inner wall of the coal bunker 1. They can be linear or grooved. The sliders 22 are movable block- or plate-shaped components that are slidably connected to the guide rails 21 and have multiple scraping elements 23 mounted on their surfaces. These scraping elements 23 can be hard scrapers or brushes.

[0032] The scraping portion 23 on the slider 22 scrapes away coal adhering to the inner wall of the coal bunker 1 through a sliding action, preventing coal from sticking or accumulating in the upper area and causing blockage. The stable fit between the slider 22 and the guide rail 21 ensures efficient scraping action, forming a dynamic cleaning mechanism with the inner wall of the coal bunker 1, and optimizing the flow of coal downstream.

[0033] The second dredging assembly 3 includes a transmission member 31, a rotating member 32, and a stirring unit 33. The transmission member 31 is a motor or a reducer 36 fixed to the outside of the bottom of the coal bunker 1. The rotating member 32 is a shaft-like structure connected to the transmission member 31 and extends into the bottom of the coal bunker 1. The stirring unit 33 is a paddle or spiral member fixed to the rotating member 32, which can be a single-layer paddle or multi-layer spiral blade.

[0034] The transmission member 31 drives the rotating member 32 to rotate around the axis, driving the stirring part 33 to perform a circular motion at the bottom of the coal bin 1. The rotation speed can be adjusted to adapt to different coal characteristics.

[0035] The stirring section 33 rotates and agitates the coal at the bottom of the coal bunker 1, breaking up any lumps or accumulations that may have formed and promoting the flow of coal toward the discharge port. The power transmission between the transmission element 31 and the rotating element 32 ensures a continuous and stable stirring action, which, in conjunction with the discharge port at the bottom of the coal bunker 1, ensures smooth discharge of the coal to downstream conveying equipment.

[0036] refer to Figure 1-2 In one embodiment provided in the present application, the first dredging component 2 also includes a fixed ring 24, a sliding ring 25 and a second hydraulic rod 26. The fixed ring 24 is fixedly mounted on the upper end of the coal bunker 1, the sliding ring 25 is slidably mounted on the upper end of the coal bunker 1, and the second hydraulic rod 26 is installed on the upper end of the fixed ring 24. The upper end of the second hydraulic rod 26 is connected to the bottom end of the sliding ring 25, and the upper end of the sliding member 22 is connected to the upper end of the sliding ring 25.

[0037] In this embodiment, the second hydraulic rod 26 drives the sliding ring 25 to slide up and down along the outer wall of the coal bunker 1 by telescoping, driving the sliding member 22 and the scraping part 23305 to move along the guide rail 21306 to scrape the inner wall of the coal bunker 1.

[0038] The second hydraulic rod 26 drives the sliding ring 25 to slide up and down, driving the sliding part 22 and the scraping part 23305 to move along the guide rail 21306, stably scraping the inner wall of the coal bunker 1, enhancing the fluidity of the coal, and preventing blockage at the top; the fixed ring 24 provides support to ensure the stable movement of the sliding ring 25, improve the dredging efficiency, and reduce the risk of damage to the wall of the coal bunker 1.

[0039] refer to Figure 2 As an optional embodiment, the second dredging component 3 also includes a ring gear 34, a gear 35, a reducer 36 and a first servo motor 37. The ring gear 34 is rotatably mounted inside the transmission member 31, and the top of the ring gear 34 is connected to the bottom end of the rotating member 32. The gear 35 is rotatably installed inside the transmission member 31 and meshes with the ring gear 34. The reducer 36 is installed on the bottom side of the transmission member 31, and the output end of the reducer 36 is transmission-connected to the gear 35. The first servo motor 37 is installed on one side of the reducer 36, and its output end is transmission-connected to the input end of the reducer 36.

[0040] In this embodiment, the first servo motor 37 drives the gear 35 to rotate via the reducer 36 . The gear 35 engages with the ring gear 34 to drive the rotating member 32 and the stirring portion 33 to rotate, thereby stirring the coal at the bottom of the coal bunker 1 .

[0041] The first servo motor 37 reduces the rotation speed and increases the torque through the reducer 36, and the drive gear 35 engages with the ring gear 34, driving the rotating member 32 and the stirring part 33 to rotate smoothly, evenly stirring the coal at the bottom of the coal bunker 1 to prevent accumulation and agglomeration; the reducer 36 ensures that the stirring force is controllable, improves the anti-blocking efficiency, and protects the structure of the coal bunker 1.

[0042] Reference Figure 1 and Figure 4-5 This embodiment provides a coal bunker anti-blocking device for a thermal power plant, comprising a fixed member 41 fixedly mounted at the bottom of the coal bunker 1; a movable portion 42 movably mounted within the fixed member 41; a dispersing member 43 mounted on the upper end of the movable portion 42 via a conductive slip ring 431, for dispersing material at the bottom of the coal bunker 1; and a spiral member 44 disposed outside the dispersing member 43 for unblocking material at the bottom of the coal bunker 1 through rotation. The dispersing member 43 and spiral member 44 reciprocate upward and downward and rotate, thereby vibrating and dispersing the coal at the bottom.

[0043] In this embodiment, the fixing member 41 is a rigid supporting structure, which is firmly installed at the bottom end of the coal bunker 1 .

[0044] The fixing part 41 provides a stable sliding or guiding space for the moving part 42, ensuring that the moving part 42 does not deviate when moving up and down inside the fixing part 41; it is tightly connected to the bottom of the coal bunker 1 to bear the load of materials and the operation of the device.

[0045] The moving part 42 is a movable component installed inside the fixed part 41 and usually adopts a slider, a slide cylinder, a slide rod or similar structures to achieve linear motion.

[0046] It moves up and down reciprocatingly in the vertical direction within the fixing member 41 .

[0047] The moving part 42 serves as a carrier for the dispersion part 43 and the spiral part 44, driving the two to move synchronously by moving up and down; forming a stable sliding fit with the fixed part 41 to ensure the accuracy of the movement trajectory; and connecting with the dispersion part 43 through the conductive slip ring 431 to transmit motion and force.

[0048] The dispersion member 43 is a conical or similar geometrically shaped component, fixed to the upper end of the moving portion 42 via a conductive slip ring 431 , and includes structures such as a conical surface, protrusions, or dispersion grooves to enhance the dispersion effect.

[0049] It moves up and down along with the moving part 42 and can rotate around its own axis at the same time.

[0050] The dispersing member 43 disperses the materials accumulated at the bottom of the coal bunker 1 to the surrounding areas through its geometric shape and rotational motion, breaking up the accumulation of the materials; cooperates with the moving part 42 to ensure the consistency of movement; and cooperates with the spiral member 44 to act on the materials together to enhance the dredging effect.

[0051] The spiral member 44 is a member in a spiral shape or with spiral blades, and is disposed around the outside of the dispersion member 43 , and includes a single spiral blade, multiple spiral blades, or a spiral groove.

[0052] It moves up and down with the moving part 42 and rotates around its own axis.

[0053] The spiral member 44 exerts shearing and pushing forces on the material at the bottom of the coal bunker 1 through rotational motion, thereby clearing the accumulated material; cooperating with the disperser 43, after the disperser 43 breaks up the accumulated material, the spiral member 44 further pushes the material outward; cooperating with the movement of the moving part 42 and the fixed part 41, the stable operation of the entire device at the bottom of the coal bunker 1 is ensured.

[0054] With the fixed member 41 providing a stable mounting base, the movable portion 42 reciprocates up and down within the fixed member 41, driving the synchronized movement of the disperser 43 and the spiral member 44. The disperser 43, through its geometric shape and rotational motion, disperses the material at the bottom of the coal bunker 1, breaking up any accumulation. The spiral member 44, through its rotation and up and down movement, exerts shearing and pushing forces, further unblocking the material. These components work together to form a continuous "dispersing-pushing-unblocking" process, effectively preventing material blockage at the bottom of the coal bunker 1.

[0055] refer to Figure 4-5 As an optional embodiment, the movable portion 42 further includes a first hydraulic rod 421, a first movable seat 422, and a second movable seat 423. The first movable seat 422 is installed inside the fixed member 41, and the second movable seat 423 is installed at the bottom end of the movable portion 42. The first hydraulic rod 421 is hinged between the first movable seat 422 and the second movable seat 423 via a pin;

[0056] In this embodiment, the first hydraulic rod 421 drives the moving part 42 to slide up and down in the fixing part 41 through telescopic movement, driving the dispersing part 43 and the spiral part 44 to move back and forth up and down, thereby dispersing the coal at the bottom of the coal bunker 1.

[0057] The first hydraulic rod 421 adjusts the height of the movable part 42 by telescoping, driving the dispersion member 43 and the spiral member 44 to move up and down, thereby enhancing the dispersion effect of the bottom coal; the first movable seat 422 and the second movable seat 423 ensure the stable movement of the hydraulic rod, improve the dredging efficiency, and reduce coal accumulation and blockage.

[0058] refer to Figure 5 As an optional embodiment, the dispersion component 43 further includes a second servo motor 432 and a vibration motor 433. The second servo motor 432 is installed inside the moving part 42, and its output end is transmission-connected to the rotating end of the conductive slip ring 431. The vibration motor 433 is embedded inside the dispersion component 43.

[0059] In this embodiment, the second servo motor 432 drives the conductive slip ring 431 to rotate, thereby driving the dispersion member 43 and the spiral member 44 to rotate, and the vibration motor 433 generates vibration to loosen the coal particles at the bottom of the coal bunker 1.

[0060] The second servo motor 432 drives the dispersion element 43 and the spiral element 44 to rotate, dispersing the coal at the bottom; the vibration motor 433 generates vibration to loosen the coal particles and reduce friction and adhesion; the conductive slip ring 431 ensures stable power supply to the vibration motor 433, synergistically improving the anti-blocking effect and promoting smooth transportation of coal.

[0061] refer to Figure 1 and Figure 6 As an optional embodiment, it further includes a screw conveyor 5, which is connected to the bottom end of the transmission member 31 by bolts, and the input end of the screw conveyor 5 is connected to the bottom end of the transmission member 31;

[0062] In this embodiment, the screw conveyor 5 receives the coal loosened by the second dredging assembly 3 and the third dredging assembly 4 and conveys it out of the coal bunker 1.

[0063] The screw conveyor 5 is connected to the transmission part 31 to promptly transport the coal loosened by the stirring part 33, the dispersion part 43 and the spiral part 44 to avoid residual accumulation at the bottom; it cooperates with the first dredging component 2, the second dredging component 3 and the third dredging component 4 to form a complete anti-blocking and coal transportation process to ensure the continuity of coal supply.

[0064] refer to Figure 6 As an optional embodiment, it further includes a support frame 6, which is mounted on the bottom end of the coal bunker 1 and connected to the coal bunker 1;

[0065] In this embodiment, the support frame 6 provides support for the coal bunker 1, and cooperates with the first dredging component 2, the second dredging component 3, the third dredging component 4 and the screw conveyor 5 to ensure stable operation of the coal bunker 1.

[0066] The support frame 6 provides stable support for the coal bunker 1, ensuring the stable operation of the first dredging component 2, the second dredging component 3, the third dredging component 4 and the screw conveyor 5, cooperating to prevent coal blockage, ensuring the continuity and stability of coal supply in the coal bunker 1, and extending the service life of the equipment.

[0067] Finally, it should be pointed out 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 without departing from the scope of the present invention.

Claims

1. A dredging mechanism, characterized in that: include, coal bunker (1); A first dredging assembly (2), the first dredging assembly (2) comprising a plurality of guide rails (21) and a sliding member (22), the guide rails (21) being fixedly arranged on the inner wall of the coal bunker (1), the sliding member (22) being slidably arranged along the guide rails (21), and the sliding member (22) being provided with a plurality of scraping portions (23); A second dredging assembly (3), the second dredging assembly (3) includes a transmission member (31), a rotating member (32) and a stirring portion (33), the transmission member (31) is arranged at the bottom end of the coal bin (1), the rotating member (32) is rotatably connected to the transmission member (31), and the stirring portion (33) is fixedly arranged on the rotating member (32).

2. The dredging mechanism according to claim 1, characterized in that: The first dredging assembly (2) further comprises a fixed ring (24), a sliding ring (25) and a second hydraulic rod (26), wherein the fixed ring (24) is sleeved on the upper end of the coal bunker (1), the sliding ring (25) is slidably sleeved on the upper end of the coal bunker (1), the second hydraulic rod (26) is mounted on the upper end of the fixed ring (24), the upper end of the second hydraulic rod (26) is connected to the bottom end of the sliding ring (25), and the upper end of the sliding member (22) is connected to the upper end of the sliding ring (25).

3. The dredging mechanism according to claim 2, characterized in that: The second dredging component (3) further comprises a ring gear (34), a gear (35), a reducer (36) and a first servo motor (37), wherein the ring gear (34) is rotatably sleeved inside the transmission member (31), the top end of the ring gear (34) is connected to the bottom end of the rotating member (32), the gear (35) is rotatably mounted inside the transmission member (31) and meshes with the ring gear (34), the reducer (36) is mounted on the bottom side of the transmission member (31), the output end of the reducer (36) is transmission-connected to the gear (35), and the first servo motor (37) is mounted on one side of the reducer (36), the output end of which is transmission-connected to the input end of the reducer (36).

4. A coal bunker anti-blocking device for a thermal power plant, characterized by: The device comprises the dredging mechanism according to any one of claims 1 to 3, and The third dredging component (4) includes, A fixing member (41) is fixedly arranged at the bottom end of the coal bunker (1); a movable portion (42) movably disposed in the fixing member (41); A dispersion member (43) includes a conductive slip ring (431) and is arranged on the upper end of the moving part (42) through the conductive slip ring (431); The spiral member (44) is arranged on the outside of the dispersion member (43).

5. The anti-blocking device for coal bunker in thermal power plant according to claim 4, characterized in that: The movable portion (42) further comprises a first hydraulic rod (421), a first movable seat (422) and a second movable seat (423), wherein the first movable seat (422) is installed inside the fixing member (41), and the second movable seat (423) is installed at the bottom end of the movable portion (42).

6. The anti-blocking device for coal bunker in thermal power plant according to claim 5, characterized in that: The first hydraulic rod (421) is hinged between the first movable seat (422) and the second movable seat (423) via a pin shaft.

7. The anti-blocking device for coal bunker in thermal power plant according to claim 6, characterized in that: The dispersion member (43) further includes a second servo motor (432) and a vibration motor (433); the second servo motor (432) is installed inside the moving part (42); the second servo motor (432) is transmission-connected to the rotating end of the conductive slip ring (431); and the vibration motor (433) is embedded inside the dispersion member (43).

8. The anti-blocking device for coal bunker in thermal power plant according to claim 7, characterized in that: The second servo motor (432) drives the conductive slip ring (431) to rotate, thereby driving the dispersion member (43) and the spiral member (44) to rotate.

9. The anti-blocking device for coal bunker in a thermal power plant according to claim 8, characterized in that: It also includes a screw conveyor (5), which is connected to the bottom end of the transmission member (31) through bolts, and the input end of the screw conveyor (5) is communicated with the bottom end of the transmission member (31).

10. The anti-blocking device for coal bunker in a thermal power plant according to any one of claims 5 to 9, characterized in that: It also includes a support frame (6), which is mounted on the bottom end of the coal bunker (1) and connected to the coal bunker (1).

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