Anti-sticking slag falling down power plant slag extractor and boiler

Abstract

This invention discloses a coal slag removal machine and boiler for preventing coal slag from sticking and falling back into the coal ash. The coal slag removal machine includes a coal slag pool, a mounting plate, a rotating shaft, a conveyor belt, a drive motor, a shielding component, a slag scraping component, and a cleaning brush. A guide groove is provided on the inner side of the mounting plate near the drive motor. The shielding component can slide along the guide groove and move outward relative to the conveyor belt to avoid the slag scraping component. The slag scraping component is in contact with the outer wall of the conveyor belt. Together with the cleaning brush, it can thoroughly clean the coal slag adhering to the inner and outer walls of the conveyor belt, prevent the coal slag from falling back into the coal ash and improve the slag removal efficiency. The guide groove can eliminate the interference between the slag scraping component and the auxiliary structure, ensure continuous and stable slag scraping, effectively reduce equipment operating losses, and improve the operational reliability of the coal slag removal machine and the slag removal system.

Description

Technical Field

[0001] This invention belongs to the field of thermal power generation technology, specifically relating to a thermal power slag removal machine and boiler that prevents slag from sticking and falling back. Background Technology

[0002] Thermal power generation is the main power supply method in my country. When coal-fired boilers are working, they produce a large amount of coal slag. As the core equipment of the boiler slag removal system, the slag remover is mainly used to separate the ash and slag produced by the boiler from the liquid-solid mixture and transport it to the designated collection area. Its performance directly affects the continuous and stable operation of the thermal power generation system.

[0003] Existing slag removal machines mostly adopt an inclined conveyor belt structure. Although they have achieved large-scale application, significant technical shortcomings still exist in actual operation. During the conveyor belt transport of coal slag, coal slag particles easily adhere to both the inner and outer walls, which existing cleaning mechanisms cannot completely remove. The adhered coal slag will fall back into the coal slag pool as the conveyor belt rotates, forming a coal slag re-falling cycle, directly reducing the efficiency of slag removal operations. At the same time, traditional slag scraping components are prone to interference with auxiliary structures on the conveyor belt, making it impossible to achieve continuous and stable slag scraping. This leads to repeated slag adhesion problems, which not only increases equipment operating wear but also affects the reliability of the entire slag removal system. Summary of the Invention

[0004] The purpose of this invention is to provide a slag removal machine and boiler for thermal power generation that prevents slag from sticking and falling back, in order to solve the technical defects of existing slag removal machines, such as easy adhesion of coal slag to the conveyor belt, incomplete cleaning, resulting in coal slag falling back, low operating efficiency, and interference between the slag scraping parts and the equipment, which makes it impossible to achieve stable and continuous slag scraping, ultimately resulting in large equipment wear and insufficient operational reliability.

[0005] To achieve the above objectives, this application provides the following technical solution: The first aspect of this application provides a slag removal machine for thermal power plants that prevents slag from sticking and falling back, comprising: The slag pit has mounting plates symmetrically arranged on both sides. A pair of rotating shafts are rotatably and inclinedly mounted on the inner wall of the slag pit, and a conveyor belt is connected between the two rotating shafts. A drive motor is fixedly mounted on the outer wall of one of the mounting plates, and the output shaft of the drive motor is fixedly connected to one of the rotating shafts to drive the conveyor belt to rotate. Several shielding components are slidably disposed on the side wall of the conveyor belt; A slag scraper assembly is fixed to the inner wall of the mounting plate on the other side, and the slag scraper assembly slides in contact with the outer wall of the conveyor belt; Cleaning brush, fixed to the inner wall of the slag pit, is used to clean the inner wall of the conveyor belt; The mounting plate near the drive motor has a guide groove on its inner side. The shielding component moves with the conveyor belt and slides along the guide groove, and can be displaced outward relative to the conveyor belt to avoid the slag scraping component.

[0006] In one optional embodiment, the upper end of the guide groove is integrally formed with a first inclined surface, and the lower end is integrally formed with a second inclined surface. The first inclined surface is used to guide the shielding component into the guide groove, and the second inclined surface is used to guide the shielding component out of the guide groove.

[0007] In one alternative embodiment, the slag scraper assembly includes: The mounting post is fixedly installed on the inner wall of the mounting plate on the side away from the drive motor; The scraper is fixedly connected to the circumferential side wall of the mounting column, and the working surface of the scraper slides against the outer side wall of the conveyor belt.

[0008] In one optional embodiment, a plurality of hollow inserts are fixedly provided on the side of the conveyor belt, and the shielding component is slidably fitted onto the hollow inserts.

[0009] In one alternative embodiment, the blocking assembly includes a slider and a baffle; The baffle is fixedly connected to the side wall of the sliding member facing the outside of the conveyor belt.

[0010] In one alternative embodiment, the slider includes: Slider, telescopic column, first spring and ball bearings; The slider has a mounting groove on one side, and the telescopic column is telescopically disposed in the mounting groove. The first spring is elastically supported between the telescopic column and the bottom of the mounting groove. The ball bearing is rotatably fitted into the outer end of the telescopic column.

[0011] In one optional embodiment, a slot is provided on the other side of the slider, a plug post is fixedly disposed in the slot, and a second spring is connected to the plug post.

[0012] In one optional embodiment, the side of the baffle that is in contact with the outer wall of the conveyor belt is provided with a third inclined surface, and the side of the sliding member that is in contact with the outer wall of the conveyor belt is provided with a fourth inclined surface.

[0013] In one alternative embodiment, a collection hopper is fixedly provided on the side of the slag pool, and the discharge end of the conveyor belt is suspended above the inlet of the collection hopper.

[0014] A second aspect of this application provides a boiler equipped with a thermal power slag remover as described above, wherein the slag pool of the slag remover is connected to the boiler slag discharge port.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The slag scraping assembly slides and fits against the outer wall of the conveyor belt. Combined with the cleaning brushes inside the slag pit, it can thoroughly clean the slag adhering to both the outer and inner walls of the conveyor belt, preventing the slag from falling back as the conveyor belt rotates, avoiding a re-falling cycle, and improving the efficiency of slag removal. The guide groove inside the mounting plate near the drive motor guides the shielding assembly to move outward, allowing it to smoothly avoid the slag scraping assembly, eliminating interference between the scraping components and auxiliary structures, ensuring a continuous and stable scraping process, achieving thorough cleaning of adhering slag, effectively preventing slag re-falling, reducing component interference and operating wear, and significantly improving the working stability of the slag remover and the operational reliability of the entire slag removal system.

[0016] 2. An inclined surface is set at the upper end of the guide groove and an inclined surface is set at the lower end. This can smoothly guide the movement of the shielding component in and out, effectively reduce the frictional resistance between the shielding component and the guide groove, avoid jamming, sticking and rigid impact, and make the shielding component's avoidance and resetting actions more stable and smooth.

[0017] 3. The slag scraping assembly is formed by mounting columns and scrapers. The mounting columns provide stable support for the scrapers, ensuring that the scrapers are installed in a precise position and are not easily loosened. The working surface of the scrapers is in close contact with the outer wall of the conveyor belt, which can stably scrape off the adhering coal slag particles.

[0018] 4. Hollow inserts are installed on the side of the conveyor belt so that the shielding component can be slidably fitted onto the hollow inserts. The hollow inserts provide linear sliding guidance for the shielding component, restricting the shielding component to only make radial sliding, avoiding deflection, shaking and misalignment, and ensuring motion accuracy.

[0019] 5. The baffle is fixed on the outside of the sliding part, which can effectively prevent coal slag from sliding down when the conveyor is tilted, thereby increasing the amount of slag removed in a single operation and the conveying efficiency.

[0020] 6. The sliding component consists of a slider, a telescopic column, a first spring, and ball bearings. The first spring provides a continuous clamping force to the telescopic column, ensuring that the ball bearings are always in contact with the mounting plate or guide groove. The ball bearings use a rolling fit to significantly reduce frictional resistance and avoid jamming and abnormal wear.

[0021] 7. An insertion slot, insertion post and second spring are set in the slider. The second spring provides a stable reset elastic force for the blocking component, so that the blocking component can quickly and accurately fit the conveyor belt and reset after completing the avoidance, ensuring that the blocking function is continuously effective.

[0022] 8. Inclined surfaces three and four are respectively set on the baffle and the sliding part, which can squeeze, cut and guide the residual coal slag during the reset process, avoid the coal slag getting stuck between the shielding component and the conveyor belt, and eliminate the dead angle of slag scraping.

[0023] 9. A collection hopper is installed next to the slag pit so that the discharge end of the conveyor belt is suspended above the collection hopper. The conveyed slag can fall directly into the collection hopper under the action of gravity for centralized collection. The collection position is accurate and there is no spillage, which facilitates subsequent unified transfer and treatment. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 and Figure 2 A three-dimensional schematic diagram of a thermal power plant slag removal machine for preventing slag from sticking and falling back, provided by the present invention; Figure 3 for Figure 2 Enlarged view at point A; Figure 4 This invention provides a schematic diagram of the installation of a cleaning brush in a thermal power plant slag remover to prevent slag from sticking and falling back into the soil; Figure 5 A schematic diagram of the disassembly of the conveyor belt and shielding components in a thermal power slag remover for preventing slag from sticking and falling back, provided by the present invention; Figure 6 for Figure 5 Enlarged view of point B in the middle; Figure 7 A schematic diagram of the disassembly of the shielding component in a thermal power slag remover to prevent slag from sticking and falling back, provided by the present invention; Figure 8 A schematic diagram of the inclined surface in a thermal power plant slag remover for preventing slag from sticking and falling back, provided by the present invention; Figure 9 This invention provides a schematic diagram of the inclined plane two in a thermal power plant slag remover to prevent slag from sticking and falling back into the ground. Figure 10 A schematic diagram of the distance between the middle plate and the mounting column of a thermal power slag remover for preventing slag from sticking and falling back, provided by the present invention; In the diagram: 1. Slag pit; 11. Pit body; 12. Support leg; 2. Mounting plate; 21. Plate body; 22. Guide groove; 23. Inclined surface one; 24. Inclined surface two; 3. Rotating shaft; 4. Conveyor belt; 41. Belt body; 42. Hollow insert rod; 5. Shielding assembly; 51. Sliding component; 511. Sliding block; 512. Mounting groove; 513. Insertion groove; 514. Telescopic column; 515. Ball bearing; 516. First spring; 517. Insertion column; 518. Second spring; 519. Inclined surface four; 52. Baffle; 521. Plate body; 522. Inclined surface three; 6. Drive motor; 7. Collection hopper; 8. Cleaning brush; 9. Slag scraping assembly; 91. Mounting column; 92. Scraper. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] To address the technical deficiencies mentioned in the background section, this embodiment provides a slag removal machine and boiler for thermal power generation that prevents slag from sticking and falling back into the soil.

[0030] The present invention will now be described in further detail with reference to the accompanying drawings: like Figures 1-10As shown, in a first aspect of the present invention, a slag removal machine for thermal power generation that prevents slag from sticking and falling back is provided, comprising a slag pool 1 with mounting plates 2 symmetrically arranged on both sides; a pair of rotating shafts 3 rotatably mounted on the inner wall of the slag pool 1, with a conveyor belt 4 drivingly connected between the two rotating shafts 3; a drive motor 6 fixedly mounted on the outer wall of one of the mounting plates 2, and the output shaft of the drive motor 6 fixedly connected to one of the rotating shafts 3 to drive the conveyor belt 4 to rotate; a plurality of shielding components 5 slidably mounted on the side wall of the conveyor belt 4; a slag scraping component 9 fixedly mounted on the inner wall of the other mounting plate 2, and the slag scraping component 9 slidingly contacting the outer wall of the conveyor belt 4; and a cleaning brush 8 fixedly mounted on the inner wall of the slag pool 1 for cleaning the inner wall of the conveyor belt 4; wherein, a guide groove 22 is provided on the inner side of the mounting plate 2 near the drive motor 6, and the shielding components 5 move with the conveyor belt 4 and slide along the guide groove 22, and can be displaced outward relative to the conveyor belt 4 to avoid the slag scraping component 9.

[0031] In this embodiment, the slag pool 1 includes a pool body 11 and support legs 12. The pool body 11 adopts a trough-shaped structure with an open top, and the interior is used to contain the liquid-solid mixture formed by slag and water, providing a working space for slag removal operations. The support legs 12 are fixedly connected to the bottom of the pool body 11 to stably support the pool body 11 on the working ground, ensuring that the equipment does not shake, shift or tilt during operation, and improving the overall structural stability.

[0032] The slag pool 1 is symmetrically equipped with mounting plates 2 on both sides. The mounting plates 2 are arranged vertically and are fixedly connected to the bottom of the pool body 11 to form a stable support frame. The mounting plates 2 are used to provide the mounting foundation for the rotating shaft 3, drive motor 6, slag scraper assembly 9 and guide groove 22 to ensure the coaxiality and positional accuracy of the internal moving parts.

[0033] Furthermore, a pair of rotating shafts 3 are rotatably installed on the inner wall of the slag pool 1. The two rotating shafts 3 are located at the upper and lower ends of the slag pool 1, respectively, and their axes are parallel to each other. The two rotating shafts 3 are connected to a conveyor belt 4 for transmission. The conveyor belt 4 realizes cyclic rotation under the drive of the rotating shafts 3, and completes the continuous conveying of slag from low to high position.

[0034] One of the mounting plates 2 has a drive motor 6 fixed on its outer wall. The output shaft of the drive motor 6 is fixedly connected to one of the rotating shafts 3. When the drive motor 6 is running, it drives the rotating shaft 3 to rotate, thereby driving the conveyor belt 4 to run continuously. The drive motor 6 provides power for the entire slag remover, ensuring that the conveying action is stable, continuous and reliable.

[0035] A number of shielding components 5 are slidably arranged on the side wall of the conveyor belt 4. The shielding components 5 are evenly distributed along the length of the conveyor belt 4 and move synchronously with the conveyor belt 4. At the same time, they can slide radially relative to the conveyor belt 4 to achieve avoidance and cooperation with the slag scraping component 9 and avoid motion interference.

[0036] On the other side, a scraper assembly 9 is fixed to the inner wall of the mounting plate 2. The scraper assembly 9 slides in contact with the outer wall of the conveyor belt 4 and continuously scrapes the coal slag particles adhering to the outer wall during the movement of the conveyor belt 4, preventing the coal slag from falling back into the coal slag pool 1 as the conveyor belt 4 rotates.

[0037] In this embodiment, a cleaning brush 8 is also fixedly installed on the inner wall of the slag pool 1. The cleaning brush 8 contacts the inner wall of the conveyor belt 4 and is used to continuously clean the slag adhering to the inner wall, so as to achieve comprehensive cleaning of the inner and outer walls of the conveyor belt 4 and solve the problem of slag residue and re-falling from the root.

[0038] Among them, the inner side of the mounting plate 2 near the drive motor 6 is provided with a guide groove 22. When the shielding component 5 moves to the position of the guide groove 22 with the conveyor belt 4, it slides along the guide groove 22 and moves outward relative to the conveyor belt 4, so as to avoid the scraping component 9, ensuring that the scraping operation and the conveying movement do not interfere with each other, and the equipment operates more smoothly.

[0039] A collection hopper 7 is fixedly installed next to the slag pool 1. The discharge end of the conveyor belt 4 is suspended above the inlet of the collection hopper 7. The slag conveyed to the top by the conveyor belt 4 falls into the collection hopper 7 under the action of gravity, realizing centralized collection and facilitating subsequent transfer and treatment.

[0040] like Figure 3 , Figure 8 and Figure 9 As shown, the mounting plate 2 includes a plate body 21, which is a rigid plate structure. The inner side is used to arrange the guide groove 22 and install the scraper assembly 9, and the outer side is used to install the drive motor 6. The guide groove 22 is opened on the inner side of the plate body 21 near the drive motor 6. The guide groove 22 is a curved groove, and its trajectory matches the movement path of the shielding assembly 5, which is used to guide the shielding assembly 5 to slide outward and reset.

[0041] In this embodiment, the upper end of the guide groove 22 is integrally formed with a first inclined surface 23, and the lower end is integrally formed with a second inclined surface 24. Both the first inclined surface 23 and the second inclined surface 24 are smooth transition structures, which are used to reduce the resistance when the shielding component 5 enters and exits the guide groove 22, and avoid jamming, sticking or impact.

[0042] Inclined surface 23 is used to guide the shielding component 5 smoothly into the guide groove 22. When the shielding component 5 moves with the conveyor belt 4 to the position of inclined surface 23, the inclined surface 23 forms a guide for the end of the shielding component 5, so that it gradually slides into the interior of the guide groove 22, realizing the initial action of outward displacement.

[0043] Inclined surface 24 is used to guide the shielding component 5 to smoothly exit the guide groove 22. When the shielding component 5 completes the avoidance action and moves to the position of inclined surface 24, inclined surface 24 gradually separates it from the guide groove 22 and resets it under the action of elasticity, and re-fits with the outer wall of the conveyor belt 4 to ensure that the shielding function continues to be effective.

[0044] The arrangement of inclined plane 1 23 and inclined plane 24 makes the movement of the shielding component 5 smoother, reduces component wear, and improves the reliability of movement and the overall service life of the equipment.

[0045] like Figure 3 and Figure 10 As shown, the slag scraping assembly 9 includes a mounting post 91 and a scraper 92. The mounting post 91 is fixedly installed on the inner wall of the mounting plate 2 on the side away from the drive motor 6 and extends horizontally to provide stable support for the scraper 92. The mounting post 91 and the mounting plate 2 are fixedly connected to ensure that there is no loosening or displacement during the slag scraping process.

[0046] The scraper 92 is fixedly connected to the circumferential side wall of the mounting column 91. The working surface of the scraper 92 slides against the outer side wall of the conveyor belt 4. The contact pressure is uniform and moderate, which can ensure the effect of scraping off the adhering coal slag without causing excessive wear to the conveyor belt 4.

[0047] During the continuous rotation of the conveyor belt 4, the scraper 92 remains fixed and forms a continuous relative sliding with the outer wall of the conveyor belt 4, scraping off the coal slag particles adhering to the outer wall layer by layer. The scraped-off coal slag falls directly into the collection hopper 7 under the action of gravity and will not return to the coal slag pool 1 with the conveyor belt 4, thereby avoiding the coal slag from falling back and circulating, and improving the efficiency of slag removal.

[0048] The slag scraping assembly 9 has a simple overall structure and stable operation. It does not require additional power and can achieve continuous slag scraping by relying on the movement of the conveyor belt 4 itself, thereby reducing energy consumption and equipment failure rate.

[0049] like Figure 5 and Figure 6 As shown, the conveyor belt 4 includes a belt body 41 and a hollow insert rod 42. The belt body 41 is a flexible and wear-resistant structure, and is connected between two rotating shafts 3 to realize cyclic conveying. The surface of the belt body 41 has a certain coefficient of friction, which can stably bear coal slag and reduce slippage.

[0050] Several hollow rods 42 are fixedly arranged on the side of the belt body 41. The hollow rods 42 are evenly distributed along the length of the belt body 41 and the axis extends along the width of the conveyor belt 4. One end of the hollow rod 42 is fixedly connected to the belt body 41, and the other end is a free end, which is used to form a sliding fit with the shielding component 5.

[0051] The shielding component 5 is slidably mounted on the hollow insert rod 42. The hollow insert rod 42 provides a sliding guide for the shielding component 5, ensuring that the shielding component 5 can only slide in a straight line and will not deflect, shake or misalign, thereby improving the motion accuracy and fit stability.

[0052] The hollow insert 42 and the blocking component 5 are in clearance fit, with low sliding resistance, which allows the blocking component 5 to move smoothly under the guidance of the guide groove 22 and return to its original position quickly under the elastic reset action.

[0053] like Figure 5 and Figure 7 As shown, the shielding assembly 5 includes a sliding member 51 and a baffle 52. The baffle 52 is fixedly connected to the side wall of the sliding member 51 facing the outside of the conveyor belt 4. The baffle 52 is arranged in a vertical direction and is used to prevent the coal slag from sliding down during the inclined conveying process, thereby increasing the single conveying capacity and improving the slag removal efficiency.

[0054] The slider 51 serves as the main moving part of the shielding component 5. It slides with the hollow insert rod 42 and rolls with the guide groove 22 to achieve the avoidance action. The slider 51 has a compact overall structure, flexible movement, and can maintain stable operation under high-speed continuous operation.

[0055] like Figure 7 As shown, the sliding member 51 includes a slider 511, a telescopic column 514, a first spring 516, and a ball bearing 515. The slider 511 is a block-shaped main body with a mounting groove 512 on one side. The mounting groove 512 is a cylindrical groove used to accommodate the telescopic column 514 and the first spring 516.

[0056] The telescopic column 514 is telescopically disposed in the mounting groove 512. The first spring 516 is elastically supported between the telescopic column 514 and the bottom of the mounting groove 512, providing a pre-tightening force for the telescopic column 514 to extend outward. In the non-working state, the telescopic column 514 remains extended under the action of the first spring 516, so that the ball 515 is always in contact with the inner wall of the mounting plate 2 or the inner wall of the guide groove 22.

[0057] In this embodiment, the ball bearing 515 is rotatably embedded in the outer end of the telescopic column 514. The ball bearing 515 forms a rolling fit with the inner wall of the guide groove 22, which greatly reduces sliding friction, avoids jamming, noise and component wear, and makes the movement of the shielding component 5 smoother.

[0058] A slot 513 is provided on the other side of the slider 511. A plug-in post 517 is fixedly installed in the slot 513. The plug-in post 517 can slide into the hollow plug rod 42 to form a nested sliding structure. A second spring 518 is connected to the plug-in post 517. The second spring 518 provides a reset elastic force for the shielding component 5. When the shielding component 5 is disengaged from the guide groove 22, it quickly resets to the direction of the conveyor belt 4 under the action of the second spring 518 and re-fits the outer wall of the conveyor belt 4.

[0059] The first spring 516 and the second spring 518 work together to respectively realize the ejection of the telescopic column 514 and the overall reset of the blocking assembly 5, so that the entire movement process is continuous, stable and reliable.

[0060] like Figure 3 , Figure 5 and Figure 9As shown, the side of the baffle 52 that is in contact with the outer wall of the conveyor belt 4 is provided with inclined surface three 522, and the side of the sliding member 51 that is in contact with the outer wall of the conveyor belt 4 is provided with inclined surface four 519. Both inclined surface three 522 and inclined surface four 519 are smooth inclined surfaces, which can squeeze, cut and guide any residual coal slag particles during the resetting process of the shielding component 5, so as to avoid coal slag getting stuck between the shielding component 5 and the conveyor belt 4 and forming a gap.

[0061] The installation of inclined planes 3 (522) and 4 (519) effectively eliminates dead angles in slag scraping, prevents slag accumulation and jamming, and ensures that the shielding component 5 is always in close contact with the conveyor belt 4, thus improving the shielding effect without affecting the normal operation of the slag scraping component 9. At the same time, the inclined structure reduces the contact area and lowers the movement resistance, making the movement of the shielding component 5 more flexible.

[0062] like Figure 4 As shown, the cleaning brush 8 is fixed to the inner wall of the slag pool 1, and its position corresponds to the rotation path of the inner side wall of the conveyor belt 4. The working end of the cleaning brush 8 is in close contact with the inner side wall of the conveyor belt 4. During the continuous rotation of the conveyor belt 4, the cleaning brush 8 continuously cleans the inner side wall and removes the adhering fine slag particles.

[0063] The cleaning brush 8 and the slag scraper assembly 9 form a coordinated internal and external cleaning structure, cleaning the inner and outer walls of the conveyor belt 4 respectively, achieving all-round, no-dead-angle slag removal and thoroughly solving the problems of coal slag adhesion, residue, and re-falling. The cleaning brush 8 is made of wear-resistant and flexible material, which will not damage the conveyor belt 4, and at the same time, the cleaning effect is stable and not prone to failure with long-term use.

[0064] The coal slag that has been cleaned and detached by the cleaning brush 8 falls back into the coal slag pool 1 and can be picked up and transported again by the conveyor belt 4, thus avoiding ineffective circulation and further improving the thoroughness of slag removal.

[0065] like Figures 1-10 As shown, the overall working process of the slag removal machine is as follows: after the equipment is started, the drive motor 6 drives the rotating shaft 3 to rotate, and the rotating shaft 3 drives the conveyor belt 4 to rotate in a cycle. The slag in the slag pool 1 is carried up by the conveyor belt 4. During the inclined upward process, the baffle 52 of the shielding component 5 prevents the slag from sliding down, so that the slag is stably transported to the upper discharge end, and then falls into the collection hopper 7 to complete the collection.

[0066] During the movement of the conveyor belt 4, the scraper 92 of the slag scraping assembly 9 continuously scrapes off the coal slag adhering to the outer wall of the conveyor belt 4, and the cleaning brush 8 continuously cleans the residual coal slag on the inner wall, achieving simultaneous cleaning inside and outside and preventing coal slag from falling back down.

[0067] When the shielding assembly 5 moves with the conveyor belt 4 to the guide groove 22 inside the mounting plate 2, the ball 515 at the end of the telescopic column 514 slides into the guide groove 22 along the inclined surface 23. Under the guidance of the guide groove 22, the sliding member 51 drives the baffle 52 to move outward relative to the conveyor belt 4, and the second spring 518 is stretched. At this time, the shielding assembly 5 moves outward as a whole, and can smoothly pass over the slag scraping assembly 9 without interfering with the scraper 92 or the mounting column 91, ensuring that the slag scraping action is continuous and stable.

[0068] When the shielding component 5 moves to the lower end of the guide groove 22, the ball 515 slides out of the guide groove 22 along the inclined plane 24, the telescopic column 514 retracts under the action of the first spring 516, and the second spring 518 pulls the sliding member 51 and the baffle 52 to quickly reset and re-fit against the outer wall of the conveyor belt 4.

[0069] During the reset process, inclined plane 3 522 and inclined plane 4 519 squeeze and remove any remaining coal slag to prevent jamming. After the shielding component 5 completes the reset, it continues to move with the conveyor belt 4 and enters the next working cycle.

[0070] In a second aspect, this invention provides a boiler equipped with a thermal power slag remover as described above, which prevents slag from sticking and falling back into the boiler. The slag pool 1 of the slag remover is connected to the boiler slag discharge port. The slag produced by the boiler combustion is directly discharged into the slag pool 1 through the slag discharge port. The slag remover continuously removes, transports, and collects the slag, realizing integrated slag discharge and slag removal operations. Furthermore, the speed of the drive motor 6 can be adjusted according to the boiler slag discharge volume, and the conveying speed of the conveyor belt 4 can be controlled to ensure smooth slag discharge without accumulation.

[0071] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A slag removal machine for thermal power plants to prevent slag from sticking and falling back, characterized in that, include: The slag pit has mounting plates symmetrically arranged on both sides. A pair of rotating shafts are rotatably and inclinedly mounted on the inner wall of the slag pit, and a conveyor belt is connected between the two rotating shafts. A drive motor is fixedly mounted on the outer wall of one of the mounting plates, and the output shaft of the drive motor is fixedly connected to one of the rotating shafts to drive the conveyor belt to rotate. Several shielding components are slidably disposed on the side wall of the conveyor belt; A slag scraper assembly is fixed to the inner wall of the mounting plate on the other side, and the slag scraper assembly slides in contact with the outer wall of the conveyor belt; Cleaning brush, fixed to the inner wall of the slag pit, is used to clean the inner wall of the conveyor belt; The mounting plate near the drive motor has a guide groove on its inner side. The shielding component moves with the conveyor belt and slides along the guide groove, and can be displaced outward relative to the conveyor belt to avoid the slag scraping component.

2. The slag removal machine for thermal power generation to prevent slag from sticking and falling back as described in claim 1, characterized in that, The upper end of the guide groove is integrally formed with a first inclined surface, and the lower end is integrally formed with a second inclined surface. The first inclined surface is used to guide the shielding component into the guide groove, and the second inclined surface is used to guide the shielding component out of the guide groove.

3. The slag removal machine for thermal power generation to prevent slag from sticking and falling back as described in claim 1, characterized in that, The slag scraping assembly includes: The mounting column is fixedly installed on the inner wall of the mounting plate on the side away from the drive motor; The scraper is fixedly connected to the circumferential side wall of the mounting column, and the working surface of the scraper slides against the outer side wall of the conveyor belt.

4. The slag removal machine for thermal power generation to prevent slag from sticking and falling back as described in claim 1, characterized in that, Several hollow rods are fixedly provided on the side of the conveyor belt, and the shielding component is slidably fitted onto the hollow rods.

5. The slag removal machine for thermal power generation according to claim 4, characterized in that, The shielding assembly includes a slider and a baffle; The baffle is fixedly connected to the side wall of the sliding member facing the outside of the conveyor belt.

6. The slag removal machine for thermal power generation to prevent slag from sticking and falling back as described in claim 5, characterized in that, The slider includes: Slider, telescopic column, first spring and ball bearings; The slider has a mounting groove on one side, and the telescopic column is telescopically disposed in the mounting groove. The first spring is elastically supported between the telescopic column and the bottom of the mounting groove. The ball bearing is rotatably fitted into the outer end of the telescopic column.

7. The slag removal machine for thermal power generation according to claim 6, characterized in that, A slot is provided on the other side of the slider, and a plug post is fixedly installed in the slot. A second spring is connected to the plug post.

8. The slag removal machine for thermal power generation to prevent slag from sticking and falling back as described in claim 5, characterized in that, The side of the baffle that is in contact with the outer wall of the conveyor belt is provided with a third inclined surface, and the side of the sliding member that is in contact with the outer wall of the conveyor belt is provided with a fourth inclined surface.

9. The slag removal machine for thermal power generation to prevent slag from sticking and falling back as described in claim 1, characterized in that, A collection hopper is fixedly installed on the side of the slag pit, and the discharge end of the conveyor belt is suspended above the inlet of the collection hopper.

10. A boiler, characterized in that, The boiler is equipped with a thermal power slag remover for preventing slag from sticking and falling back as described in any one of claims 1-9, wherein the slag pool of the slag remover is connected to the boiler slag discharge port.

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