Slag discharging device of boiler slag bin

Abstract

The invention relates to the technical field of thermal power equipment, in particular to a boiler slag bin slag discharging device which comprises a pneumatic conveying slag discharging mechanism, a bag-type dust collector is arranged at the end of the pneumatic conveying slag discharging mechanism and comprises a shell and a dust collecting bag, and a sliding frame capable of moving in the length direction of the shell is arranged on the inner wall of the shell. The multiple sliding frames are arranged in a central symmetry mode relative to the center of the shell, dust collecting components are arranged on the sliding frames and comprise collecting boxes, movable feeding pipes are arranged on the collecting boxes, openings in one-to-one correspondence with the feeding pipes are formed in the collecting boxes, and the openings are communicated with the feeding pipes. The end, away from the collecting box, of each feeding pipe is provided with a scraper used for scraping dust on the dust removal bag, the adjacent scrapers are connected through a rotating shaft and a torsional spring, the collecting box is provided with an air bag connected with the feeding pipes, and the inner wall of the shell is provided with a pneumatic telescopic component used for driving the sliding frame to move. The dust removal efficiency of the bag-type dust remover can be improved when the slag bin of the boiler discharges slag.

Description

Technical Field

[0001] This application relates to the field of thermal power equipment technology, and in particular to a boiler slag bin ash discharge device. Background Technology

[0002] In the thermal power generation industry, the ash and slag generated by boiler operation need to be temporarily stored in slag bins before being discharged. Currently, the mainstream slag discharge method is pneumatic conveying, which uses high-pressure airflow to transport the ash and slag in the slag bin to designated processing equipment. This method has the advantages of high conveying efficiency and small footprint, but it generates a large amount of dust during the conveying process, which not only harms production equipment and safety, but also the health of workers. Therefore, the purification and treatment of dust urgently needs to be addressed. Summary of the Invention

[0003] In order to improve the dust removal efficiency of the bag filter during boiler slag discharge, this application provides a boiler slag discharge device.

[0004] This application provides a boiler slag bin ash discharge device, which adopts the following technical solution: It includes a pneumatic conveying ash discharge mechanism, with a bag filter at the end of the mechanism. The bag filter includes a shell, a dust collection bag, and a sliding frame movable along the length of the shell on the inner wall. Multiple sliding frames are arranged symmetrically about the center of the shell. A dust collection component is mounted on the sliding frame, including a collection box. Multiple movable feed pipes are evenly spaced along the length of the collection box. The box has openings corresponding to the feed pipes. Each feed pipe has a scraper at the end furthest from the collection box for scraping dust off the dust bag. Adjacent scrapers are connected by a pivot and a torsion spring. The collection box has an air bladder connected to the feed pipe. When the air bladder is inflated, the feed pipe will move the scraper closer to the dust bag. The inner wall of the outer shell has a pneumatic telescopic component for moving the slide. The outer shell has an openable door panel. The collection box has an openable and closable door. When the dust collection component enters the collection box through the door panel and the door, the dust inside the collection box will be sucked away.

[0005] Optionally, the scraper has a "U" shaped structure, and the two opposite sides of the scraper are provided with connecting ears for use with adjacent scrapers. The connecting ears are provided with connecting holes for the rotating shaft to pass through, and the end of the rotating shaft is provided with a torsion spring. When the torsion spring is in normal condition, each scraper will be arranged in a straight line.

[0006] Optionally, the feed pipe is inclined, and the inner wall of the collection box and the two opposite sides of each opening are provided with compression springs connected to the feed pipe. The inner wall of the collection box is provided with a positioning post for fixing one end of the compression spring. The end of the feed pipe away from the scraper is provided with a positioning edge around the feed pipe, and the positioning edge is provided with a positioning hole for fixing the compression spring.

[0007] Optionally, the feed pipe is provided with a top plate, each top plate is provided with a rotating roller, the end of the airbag is provided with a push belt, and the surfaces of the rotating roller and the push belt are provided with soft magnets that cooperate with each other.

[0008] Optionally, the collection box is provided with a horizontal plate, and the horizontal plate is provided with an air seat that communicates with the airbag. The slide is provided with a first air pump that communicates with the air seat through an air pipe. The airbag is covered with an elastic net, one end of which is connected to a push plate and the other end of which is connected to the slide.

[0009] Optionally, the pneumatic telescopic component includes a pneumatic telescopic rod connected to the second air pump, a fixing frame is provided on the inner wall of the outer shell, pneumatic telescopic rods are provided on both sides of the fixing frame, a dustproof bag is provided on the outside of the pneumatic telescopic rod, the pneumatic telescopic rod includes a base rod and an extension rod, one end of the dustproof bag is connected to the base rod and the other end is connected to the slide.

[0010] In summary, this application includes the following beneficial technical effects: 1. Slides and dust collection components are installed on the sides of the dust collector bags. By controlling the pneumatic telescopic components of each slide, the dust collector bags can be cleaned sequentially according to the set plan. The dust on the dust collector bags is cleaned while ensuring stable dust removal by the bag filter. The pneumatic conveying slag removal mechanism does not need to be stopped during the dust removal process. 2. The pneumatic telescopic component drives the slide to move along the length of the outer shell, so that the scraper can cover the entire length of the dust bag; the U-shaped scraper is adapted to the curvature of the dust bag, and with the elastic connection of the rotating shaft and torsion spring, it can adapt to slight offset or unevenness of the dust bag surface, avoiding dust removal omissions; 3. The dust scraped off by the scraper enters the collection box directly through the feed pipe. The movable connection between the feed pipe and the collection box makes it easy to adjust according to the rotation angle of the scraper. The collection box is sealed by the box door and cooperates with the upper door panel of the outer shell to clean the dust inside the collection box. 4. The dust bag outside the pneumatic telescopic rod can completely isolate external dust and prevent dust from entering the gap between the base rod and the extension rod; 5. The elastic net is used for limiting the airbag during storage, and the rotating roller on the top plate, together with the soft magnet on the push belt, reduces the friction between the feed tube and the scraper during movement. Attached Figure Description

[0011] Figure 1 This is a structural diagram of a bag filter dust collector for a boiler slag bin discharge device according to this application; Figure 2 This is an enlarged view of section A of the structural diagram of the bag filter dust collector for boiler slag bin discharge device of this application; Figure 3 This is a structural diagram of the collection box of a boiler slag bin slag discharge device according to this application; Figure 4This is an enlarged view of section B of the structural diagram of the boiler slag bin ash discharge device collection box in this application; Figure 5 This is a structural diagram of the pneumatic telescopic component of the slag discharge device for a boiler slag bin, as described in this application.

[0012] Reference numerals: 1. Outer shell, 2. Dust bag, 3. Slide, 4. Collection box, 5. Feed pipe, 6. Opening, 7. Scraper, 8. Rotary shaft, 9. Airbag, 10. Box door, 11. Connecting ear, 12. Compression spring, 14. Positioning post, 15. Positioning edge, 16. Positioning hole, 17. Top plate, 18. Rotating roller, 19. Push belt, 20. Air seat, 21. First air pump, 22. Fixing frame, 23. Extension rod, 24. Elastic net, 25. Horizontal plate, 26. Base rod, 27. Dust bag. Detailed Implementation

[0013] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0014] This application discloses a boiler slag bin ash discharge device. For example... Figure 1-4As shown, the device includes a pneumatic conveying slag discharge mechanism. A bag filter is installed at the end of the pneumatic conveying slag discharge mechanism. The bag filter includes a housing 1 and a dust collection bag 2. This is prior art. A slide 3, movable along the length of the housing 1, is installed on the inner wall of the housing 1. Multiple slides 3 are arranged symmetrically about the center of the housing 1. A dust collection component is installed on the slide 3, including a collection box 4 bolted to the slide 3. A movable feed pipe 5 is installed on the collection box 4. Multiple feed pipes 5 are evenly spaced along the length of the collection box 4. The collection box 4 has openings 6 corresponding to the feed pipes 5. The feed pipes 5 are inclined. Compression springs 12, connected to the feed pipes 5, are installed on the inner wall of the collection box 4 on two opposite sides of each opening 6. Positioning posts 14, for fixing one end of the compression springs 12, are screwed to the inner wall of the collection box 4. Multiple positioning posts 14 are arranged in pairs. The end of the feed pipe 5 furthest from the scraper 7 is screwed with a positioning edge 15 that surrounds the feed pipe 5. The positioning edge 15 has a rectangular ring structure and positioning holes 16 for fixing the compression spring 12. There are two positioning holes 16, which are symmetrically arranged about the center line of the positioning edge 15. The end of each feed pipe 5 furthest from the collection box 4 is equipped with a scraper 7 for scraping dust off the dust collection bag 2. The scraper 7 has a "U" shaped structure. The two opposite sides of the scraper 7 are equipped with connecting ears 11 for cooperating with adjacent scrapers 7. Each connecting ear 11 is equipped with a connecting hole. A rotating shaft 8 for rotatably connecting adjacent scrapers 7 is set in the connecting hole. A torsion spring is set at the end of the rotating shaft 8. When the torsion spring is in the normal state, each scraper 7 will be aligned in a straight line. The collection box 4 is equipped with an air bladder 9 connected to the feed pipe 5. The air bladder 9 is prior art. When the air bladder 9 is inflated, the feed pipe 5 will drive the scraper 7 closer to the dust collection bag 2. The inner wall of the outer casing 1 is provided with a pneumatic telescopic component for moving the carriage 3. The outer casing 1 is provided with an openable door panel, which is existing technology. The collection box 4 is provided with an openable and closable box door 10. The box door 10 is provided with a notch for placing the box door 10. The box door 10 is provided with a horizontal shaft integrally formed with it. A torsion spring is provided at the end of the horizontal shaft. The box door 10 is provided with a horizontal hole that cooperates with the horizontal shaft. When the dust collection component enters the collection box 4 through the door panel and the box door 10, the dust in the collection box 4 will be sucked away.

[0015] In one embodiment, according to the appendix Figure 2As shown, a top plate 17 is provided on the feed pipe 5. A rotating roller 18 is rotatably connected to the end of each top plate 17 away from the scraper 7. A push belt 19, made of rubber, is glued to the end of the airbag 9. Soft magnets are provided on the surfaces of the rotating roller 18 and the push belt 19 for mutual cooperation. When the airbag 9 drives the push belt 19 to expand, the rotating roller 18 and the push belt 19 attract each other, and the rotating roller 18 rotates under the action of the push belt 19. A horizontal plate 25 is screwed onto the collection box 4. An air seat 20, communicating with the airbag 9, is glued onto the horizontal plate 25. The air seat 20 is existing technology. A first air pump 21, communicating with the air seat 20 via an air pipe, is screwed onto the slide 3. An elastic net 24, existing technology, is covered over the airbag 9. One end of the elastic net 24 is connected to the push plate, and the other end is connected to the slide 3. A spring-loaded rope mechanism is screwed onto the horizontal plate 25, and the rope of the spring-loaded rope mechanism is connected to the push belt 19.

[0016] In one embodiment, according to the appendix Figure 5 As shown, the pneumatic telescopic component includes a pneumatic telescopic rod connected to the second air pump. The pneumatic telescopic rod is existing technology. A fixing frame 22 is fixed to the inner wall of the outer shell 1 with screws. The pneumatic telescopic rod is fixed to both sides of the fixing frame 22 with bolts. A dustproof bag 27 is fitted on the outside of the pneumatic telescopic rod. The pneumatic telescopic rod includes a base rod 26 and an extension rod 23. One end of the dustproof bag 27 is connected to the base rod 26 and the other end is connected to the slide 3. The extension rod 23 is bolted to the slide 3.

[0017] The implementation principle of a boiler slag bin ash discharge device according to an embodiment of this application is as follows: Start the pneumatic conveying slag discharge mechanism. The dust generated during the conveying process enters the bag filter with the airflow and adheres to the outer surface of the dust collection bag 2. Start the first air pump 21 to inflate the air bag 9 through the air seat 20. The air bag 9 expands and pushes the push belt 19, which in turn pushes the top plate 17 on the feed pipe 5 to move. The feed pipe 5 and the scraper 7 move synchronously until the scraper 7 is in contact with the outer surface of the dust bag 2. When the air bag 9 drives the push belt 19 to expand, the rotating roller 18 rotates under the action of the push belt 19 to reduce the friction between the push belt 19 and the top plate 17. Start the second air pump to control the pneumatic telescopic rod to extend and drive the slide 3 to move along the slide rail. During the movement, the U-shaped scraper 7 scrapes off the dust on the surface of the dust bag 2. The dust falls into the collection box 4 through the feed pipe 5 under the action of gravity. If the dust bag 2 shifts slightly due to suspension deviation, the rotation angle between the adjacent scrapers 7 will change, so that the scrapers 7 always keep in contact with the surface of the dust bag 2 and avoid gaps. When the carriage 3 moves to the other end of the outer shell 1, the second air pump is turned off, and the pneumatic telescopic rod extension rod 23 is reset; the door panel of the outer shell 1 and the door 10 of the collection box 4 are opened, and the industrial vacuum cleaner suction pipe is inserted into the collection box 4 to perform dust adsorption and transfer.

[0018] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A boiler slag bin slag discharge device, comprising a pneumatic conveying slag discharge mechanism, wherein a bag filter is provided at the end of the pneumatic conveying slag discharge mechanism, the bag filter comprising a shell (1) and a dust collection bag (2), characterized in that... The inner wall of the outer shell (1) is provided with a slide (3) that can move along the length of the outer shell (1). There are multiple slides (3) and they are arranged symmetrically about the center of the outer shell (1). A dust collection component is provided on the slide (3). The dust collection component includes a collection box (4). A movable feed pipe (5) is provided on the collection box (4). There are multiple feed pipes (5) and they are evenly spaced along the length of the collection box (4). The collection box (4) is provided with an opening (6) that corresponds to each feed pipe (5). The end of each feed pipe (5) away from the collection box (4) is provided with a scraping dust removal tool. The dust scraper (7) on the bag (2) is connected to the torsion spring through the rotating shaft (8) between adjacent scrapers (7). The collection box (4) is provided with an air bag (9) connected to the feed pipe (5). When the air bag (9) is inflated, the feed pipe (5) will drive the scraper (7) to approach the dust bag (2). The inner wall of the outer shell (1) is provided with a pneumatic telescopic component for moving the slide (3). The outer shell (1) is provided with an openable door panel. The collection box (4) is provided with an openable and closable box door (10). When the dust suction component enters the collection box (4) through the door panel and the box door (10), the dust in the collection box (4) will be sucked away.

2. The boiler slag bin ash discharge device according to claim 1, characterized in that... The scraper (7) has a "U" shaped structure. The two opposite sides of the scraper (7) are provided with connecting ears (11) for use with adjacent scrapers (7). The connecting ears (11) are provided with connecting holes for the rotating shaft (8) to pass through. The end of the rotating shaft (8) is provided with a torsion spring. When the torsion spring is in normal condition, each scraper (7) will be arranged in a straight line.

3. A boiler slag bin ash discharge device according to claim 1, characterized in that... The feed pipe (5) is inclined. The inner wall of the collection box (4) and the two opposite sides of each opening (6) are provided with compression springs (12) connected to the feed pipe (5). The inner wall of the collection box (4) is provided with a positioning post (14) for fixing one end of the compression spring (12). The end of the feed pipe (5) away from the scraper (7) is provided with a positioning edge (15) around the feed pipe (5). The positioning edge (15) is provided with a positioning hole (16) for fixing the compression spring (12).

4. A boiler slag bin ash discharge device according to claim 1, characterized in that... The feed pipe (5) is provided with a top plate (17), and each top plate (17) is provided with a rotating roller (18). The end of the airbag (9) is provided with a push belt (19). The rotating roller (18) and the push belt (19) are provided with soft magnets that cooperate with each other.

5. A boiler slag bin ash discharge device according to claim 4, characterized in that... The collection box (4) is provided with a horizontal plate (25), and the horizontal plate (25) is provided with an air seat (20) that communicates with the airbag (9). The slide (3) is provided with a first air pump (21) that communicates with the air seat (20) through an air pipe. The airbag (9) is covered with an elastic net (24), one end of the elastic net (24) is connected to the push plate and the other end is connected to the slide (3).

6. A boiler slag bin ash discharge device according to claim 1, characterized in that... The pneumatic telescopic component includes a pneumatic telescopic rod connected to the second air pump. A fixing frame (22) is provided on the inner wall of the outer shell (1). Pneumatic telescopic rods are provided on both sides of the fixing frame (22). A dustproof bag (27) is provided on the outside of the pneumatic telescopic rod. The pneumatic telescopic rod includes a base rod (26) and an extension rod (23). One end of the dustproof bag (27) is connected to the base rod (26) and the other end is connected to the slide (3).

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