Scraper slag salvaging machine with good stability

Abstract

The utility model relates to the field of boiler bottom ash treatment, in particular to a scraper slag conveyor with good stability, which comprises a triangular sprocket group, the tooth crest of the sprocket group is meshed with a conveying group for conveying slag, and the outer surface of the sprocket group is bolted with a chain scraping group for scraping the outer surface of the conveying group. The material scraping end of the chain material scraping set makes contact with the outer side of the conveying set, the outer side of the chain tooth set is connected with a back material scraping set for scraping materials on the inner surface of the conveying set, and the back material scraping set makes contact with the inner side of the conveying set. According to the invention, the scraper slag salvaging machine is in an inverted triangle state in a slag natural conveying state, and has a high meshing transmission effect in a severe and severe use environment.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of boiler bottom ash handling, in particular to a stable scraper slag conveyor. BACKGROUND

[0002] At present, in coal-fired power plants, a large amount of furnace bottom slag is generated due to the combustion of coal. If these slag materials are not removed in time, not only the thermal efficiency of the boiler will be affected, but also serious equipment damage may be caused. Although the traditional scraper slag conveyor can complete the slag cleaning work to a certain extent, it is prone to problems such as accelerated wear, high maintenance cost and low work efficiency under long-time operation. With the improvement of environmental protection standards and the progress of technology, there is an increasingly urgent need for more efficient, more stable and easier-to-maintain slag conveying equipment.

[0003] Common scraper slag conveyors mainly include chain type and belt type: the chain type scraper slag conveyor removes slag by moving the scraper through the chain. This design is simple and reliable, but long-term use can cause problems such as chain slackening and breaking, requiring frequent maintenance. The belt type scraper slag conveyor uses a conveyor belt to transport slag, which has high transportation efficiency, but is prone to belt damage due to material impact, resulting in high replacement cost. These two traditional designs have not been able to balance the durability and economy of the equipment well.

[0004] The existing scraper slag conveyors generally have problems such as fast wear, high failure rate and short service life in actual use, especially in high-strength and continuous working environments, the engagement stability and reliability of the equipment are difficult to meet the demand. In addition, the design of the traditional model makes daily maintenance more complex, increasing operating costs. CONTENT OF THE INVENTION

[0005] In order to make the scraper slag conveyor conform to the inverted triangular state of the natural slag conveying state, and have high engagement transmission in harsh and heavy use environments, the present application provides a scraper slag conveyor with good stability.

[0006] The scraper slag conveyor with good stability provided by the present application adopts the following technical solution: a scraper slag conveyor with good stability, comprising a triangular chain tooth group, the chain tooth group is engaged with a conveying group for transporting molten slag, a chain scraper group is bolted on the inner side of the chain tooth group and in contact with the outer surface of the conveying group, and a back scraping group is connected to the outer surface of the conveying group.

[0007] By adopting the above technical solution, the triangular chain tooth group divides the conveying group into a horizontal transportation section and an inclined rising section. The horizontal transportation section of the conveying group is used to collect molten slag from the smelting furnace and perform horizontal displacement, and the inclined rising section of the conveying group is used to raise the height of the molten slag from the smelting furnace, so that the molten slag after climbing enters the external conveying car. The chain scraper group is used to clean the molten slag on the outer surface of the conveying group, and the back scraping group is used to clean the molten slag on the inner surface of the conveying group.

[0008] Optionally, the conveying group comprises two conveying hinges engaged with the chain teeth and a vertical chain not in the same plane as the two conveying hinges, and a conveying belt is arranged between the two conveying hinges and the vertical chain for placing the molten slag, the vertical chain is fixed to the bottom of the conveying belt, and the two conveying hinges, the vertical chain and the conveying belt form an inverted triangular cross section of the conveying group.

[0009] By adopting the above technical scheme, the two conveying hinges are engaged with the chain teeth for transmission, thereby playing a role in transportation transmission, the two edges of the conveying belt are respectively connected with the two conveying hinges, the two conveying hinges drive the conveying belt to transport during movement, the middle part of the conveying belt is provided with the vertical chain, and the vertical chain causes the conveying belt to naturally sag in a natural state, the two conveying hinges, the vertical chain and the conveying belt form an inverted triangular cross section of the conveying group, and the molten slag in the cooling process mainly contacts the conveying belt and the vertical chain, so that the service life of the two conveying hinges is prolonged. Optionally, the upper surfaces of the two conveying belts are provided with a scraper group for preventing the molten slag from sliding upward, the scraper group comprises scrapers fixedly connected with the conveying belt, and a deformation baffle is arranged between the two scrapers, one side of the deformation baffle is fixedly connected with the left scraper, the other side of the deformation baffle is fixedly connected with the right scraper, and the deformed deformation baffle fills the gap between the two scrapers.

[0010] By adopting the above technical scheme, the scraper group causes the molten slag to be transported in the inclined upward section of the conveying group without sliding downward, the deformation baffle itself is flexible, and the deformation baffle is used to fill the gap between the two scrapers to prevent the molten slag from sliding from the gap between the two scrapers. Optionally, the deformation baffle comprises two connecting plates, a first connecting group is fixedly connected to the inner side of the connecting plate on the left side, a second connecting group is fixedly connected to the inner side of the connecting plate on the right side, and a plurality of connecting groups are hingedly connected between the first connecting group and the second connecting group. By adopting the above technical scheme, the connecting plate on the left side and the connecting plate on the right side play a role in fixed connection, and the plurality of connecting groups protrude to the side of the vertical chain when deformed, and the plurality of connecting groups after deformation contact the conveying belt, thereby playing a role in filling the gap between the two connecting plates.

[0011] Optionally, the connecting group comprises a first support plate on the inner side, a second support plate is hingedly connected to the first support plate, the second support plate is located on the outer side of the first support plate in the radial direction, and a third support plate is hingedly connected to the side away from the first support plate of the second support plate, and the third support plate is located on the outer side of the second support plate in the radial direction.

[0012] By adopting the above technical scheme, the top of the first support plate has a small deformation range in the circumferential direction, the root of the first support plate does not deform in the circumferential direction, the second support plate maintains the same horizontal line as the first support plate in the radial direction, the top of the second support plate has a large displacement distance in the circumferential direction, and the third support plate has a larger displacement distance than the second support plate.

[0013] Optionally, the first support plate comprises a first support plate for supporting the slag transportation and a mounting column arranged near the second support plate, the first support plate is in a strip shape, and the first support plate is provided with the mounting column on one side near the second support plate, and the first support plate is hinged to the second support plate through the mounting column.

[0014] By adopting the above technical scheme, the first support plate is in a strip shape, the first support plate in a strip shape is provided with the mounting column on one side as a support structure, the mounting column provides a mounting structure with the second support plate, and the second support plate can rotate relative to the first support plate around the mounting column, so as to fill the gap between adjacent first support plates and avoid slag leakage.

[0015] Optionally, the second support plate comprises a second support plate, a hinge hole is arranged in the middle of the second support plate, the hinge hole is matched with the mounting column for mounting, a movable guide groove is arranged on the second support plate near the third support plate, the movable guide groove is slidably connected to the root of the third support plate, and a clamping protrusion is further arranged on the top of the second support plate and buckled to the root of the third support plate.

[0016] By adopting the above technical scheme, the second support plate is provided with the hinge hole in the middle as a support structure, the hinge hole is matched with the mounting column for mounting, and the movable guide groove is used to provide a structure for slidingly guiding the third support plate relative to the second support plate, so that the third support plate after rotation fills the gap between the second support plate after rotation relative to the first support plate, and the clamping protrusion is buckled to the root of the third support plate to realize a second connection structure of the second support plate and the third support plate, thereby improving the support force on the slag.

[0017] Optionally, the root of the third support plate is provided with a clamping hole for buckling with the clamping protrusion, guide grooves are arranged on both sides of the third support plate and staggered with adjacent third support plates, and a reinforcing rib is arranged on the side of the third support plate away from the second support plate.

[0018] By adopting the above technical scheme, the clamping hole provides a structure for buckling with the clamping protrusion, the staggered guide grooves are used to realize the rotation closure of two adjacent third support plates in the same plane, so as to avoid a too large gap, and the reinforcing rib is used to strengthen the strength of the third support plate to avoid breakage during use.

[0019] Optionally, the chain scraping group comprises a support rod connected with the chain teeth and a pointed end plate located on the side of the support rod away from the chain teeth, and the pointed end plate is hinged to the support rod.

[0020] By adopting the above technical scheme, the support rod body provides a structure for connecting with the chain teeth, so that the pointed end plate located on the side of the support rod away from the chain teeth is at the same height relative to the conveying hinge, the conveying hinge moves relative to the pointed end plate, so that the slag residues on the conveying hinge fall off, and the stability of the meshing of the conveying hinge and the chain teeth is improved.

[0021] Optionally, the back scraping group comprises a support plate hinged with the chain tooth and a cleaning roller hinged with the support plate, the cleaning roller being in contact with the inner side of the two conveying hinges.

[0022] By adopting the above technical scheme, the support plate provides a structure that is stationary relative to the ground, and the cleaning roller hinged with the support plate cleans the inner side of the conveying hinge.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. The triangular chain tooth group divides the conveying group into a horizontal transportation section and an inclined ascending section, the horizontal transportation section of the conveying group is used for collecting molten slag from the smelting furnace and performing horizontal displacement, the inclined ascending section of the conveying group is used for height climbing of the molten slag from the smelting furnace, so that the molten slag after climbing enters the external conveying vehicle, the chain scraping group is used for cleaning the molten slag on the outer surface of the conveying group, and the back scraping group is used for cleaning the molten slag on the inner surface of the conveying group.

[0025] 2. The two conveying hinges are engaged with the chain tooth to drive transmission, the two edges of the conveying belt are connected with the two conveying hinges respectively, the two conveying hinges drive the conveying belt to move during movement, the middle part of the conveying belt is provided with a vertical chain, in a natural state, the vertical chain makes the conveying belt naturally sag, the two conveying hinges, the vertical chain and the conveying belt form a conveying group with an inverted triangular cross section, and the molten slag in the cooling process mainly contacts the conveying belt and the vertical chain, so that the service life of the two conveying hinges is prolonged.

[0026] 3. The scraper group makes the molten slag in the inclined ascending section conveying group not slide downward, the deformed baffle is flexible, and the deformed baffle is used for filling the gap between the two scrapers to avoid the molten slag from sliding off from the gap between the two scrapers. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a perspective view of the present embodiment.

[0028] Figure 2 is a perspective view of the deformed baffle Figure 1 .

[0029] Figure 3 is a perspective view of the deformed baffle Figure 2 .

[0030] Explanation of reference numerals in the attached drawings: 1. Chain tooth assembly; 2. Conveying assembly; 21. Conveying hinge; 22. Vertical chain; 23. Conveyor belt; 24. Scraper assembly; 241. Scraper; 242. Deformation baffle; 2421. Connecting plate; 2422. First connecting assembly; 2423. Second connecting assembly; 2424. Connecting assembly; 24241. First support plate; 242411. First support plate; 242412. Mounting column; 24242. Second support plate; 242421, Second support plate; 242422, Hinge hole; 242423, Movable guide groove; 242424, Snap-fit ​​protrusion; 24243, Third support plate; 242431, Snap-fit ​​hole; 242432, Guide groove; 242433, Reinforcing rib; 3, Chain scraper assembly; 31, Support rod; 32, Tip plate; 4, Backward scraper assembly; 41, Support plate; 42, Cleaning roller. Detailed Implementation

[0031] The following is in conjunction with the appendix Figures 1-3 This application will be described in further detail.

[0032] This application discloses a scraper slag remover with good stability. (Refer to...) Figure 1 A stable scraper slag remover includes a chain tooth assembly 1, which is triangular in shape. A chain scraper assembly 3 is bolted to the inner side of the chain tooth assembly 1. The chain scraper assembly 3 contacts the outer surface of the conveying assembly 2, cleaning the molten slag from its outer surface. A back-facing scraper assembly 4 is connected to the outer side of the chain tooth assembly 1, contacting the outer surface of the conveying assembly 2 to clean the molten slag from the inner surface of the chain scraper assembly 3. (Refer to...) Figure 1 The conveying assembly 2 includes two conveying hinges 21 and a vertical chain 22. The two conveying hinges 21 mesh with the chain tooth assembly 1 to achieve meshing transmission. The vertical chain 22 is not on the same plane as the two conveying hinges 21. A conveyor belt 23 for placing molten slag is provided between the vertical chain 22 and the two conveying hinges 21. The bottom of the conveyor belt 23 is fixed to the vertical chain 22. The two conveying hinges 21, the vertical chain 22, and the conveyor belt 23 form the conveying assembly 2, which has an inverted triangular cross-section. The inverted triangular structure means that the molten slag on the conveyor belt 23 is mainly supported by the vertical chain 22. (Refer to...) Figure 2 and Figure 3 Scraper assemblies 24 are installed on the upper surfaces of the two conveyor belts 23. The scraper assemblies 24 allow molten slag to rise on the conveyor belts 23 and prevent it from sliding to the bottom. Each scraper assembly 24 includes scrapers 241, which are fixedly connected to the upper surface of the conveyor belts 23. A deformation baffle 242 is installed between the two scrapers 241. One side of the deformation baffle 242 is fixedly connected to the left scraper 241, and the other side is fixedly connected to the right scraper 241. The deformed deformation baffle 242 fills the gap between the two scrapers 241, improving the overall stability of the equipment. (Refer to...) Figure 2 and Figure 3, the deformation baffle 242 includes two connecting plates 2421, the inner side of the connecting plate 2421 located on the left side is fixedly connected with a first connecting group 2422, and the inner side of the connecting plate 2421 located on the right side is fixedly connected with a second connecting group 2423; the angle between the first connecting group 2422 and the second connecting group 2423 changes with the angle between the two conveying hinges 21 and the vertical chain 22; a plurality of connecting groups 2424 are hinged between the first connecting group 2422 and the second connecting group 2423; the change between adjacent connecting groups 2424 makes the baffle an integral whole, avoiding slag falling. Refer to Figure 2 and Figure 3 , the connecting group 2424 includes a first supporting plate 24241 located on the inner side, a second supporting plate 24242 hinged on the first supporting plate 24241, the second supporting plate 24242 located in the middle, and a third supporting plate 24243 hinged on the second supporting plate 24242 away from the first supporting plate 24241, the third supporting plate 24243 located on the outermost side; the first supporting plate 24241, the second supporting plate 24242 and the third supporting plate 24243 form a sector that can change with the angle between the two conveying hinges 21 and the vertical chain 22. Refer to Figure 2 and Figure 3 , the first supporting plate 24241 includes a first supporting plate 242411 which plays a role of slag transportation support, and a mounting column 242412 provided near the second supporting plate 24242, the mounting column 242412 plays a role of rotation support for the second supporting plate 24242; the supporting plate 41 is in a strip shape, the mounting column 242412 is located on the side of the first supporting plate 242411 close to the second supporting plate 24242, the first supporting plate 242411 is hinged with the second supporting plate 24242 through the second mounting column 242412, and the second supporting plate 24242 can relatively rotate around the first supporting plate 242411 after being hinged, so as to fill the gap formed after the first supporting plate 242411 rotates. Refer to Figure 2 and Figure 3 , the second supporting plate 24242 includes a second supporting plate 242421, a hinged hole 242422 is provided in the middle of the second supporting plate 242421, the hinged hole 242422 is matched with the mounting column 242412 for installation, so that the second supporting plate 242421 relatively rotates relative to the first supporting plate 242411, the second supporting plate 24242 is provided with a movable guide groove 242423, the movable guide groove 242423 is located close to the third supporting plate 24243, the movable guide groove 242423 is slidably connected with the root of the third supporting plate 24243, so that the third supporting plate 24243 can rotate around the second supporting plate 242421, and the second supporting plate 24242 is further provided with a clamping protrusion 242424, the clamping protrusion 242424 is buckled with a second connecting point at the root of the third supporting plate 24243. Refer to Figure 2 andFigure 3 The third support plate 24243 has a snap-fit ​​hole 242431 at its base for engaging with the snap-fit ​​protrusion 242424. Guide grooves 242432 are provided on both sides of the third support plate 24243, and these grooves are staggered. The third support plate 24243 has reinforcing ribs 242433 located on the side of the third support plate 24243 away from the second support plate 24242. During unfolding, the snap-fit ​​hole 242431 engages with the snap-fit ​​protrusion 242424 to form a second connection point, enhancing support strength. The guide grooves 242432 provide stacking space for adjacent third support plates 24243. The reinforcing ribs 242433 provide strength support for the third support plate 24243, preventing breakage during use. (Reference) Figure 2 The chain scraper assembly 3 includes a support rod 31 and a tip plate 32. The support rod 31 is connected to the chain teeth, and the tip plate 32 is located on the side of the support rod 31 away from the chain teeth. The tip plate 32 is fixedly connected to the support rod 31. The end of the tip plate 32 is used to clean slag residue on the conveyor hinge 21 to prevent skipping of teeth during engagement between the conveyor hinge 21 and the chain teeth. (Reference) Figure 3 Figure 1 Figure 1 The back-facing scraper assembly 4 includes a support plate 41 and a cleaning roller 42. The support plate 41 is hinged to the chain teeth, and the cleaning roller 42 is hinged to the support plate 41. The cleaning roller 42 contacts the inner side of the conveying hinge 21, thereby avoiding tooth skipping during meshing and improving the stability during operation. The implementation principle of a scraper slag remover with good stability according to this application embodiment is as follows: When the operator starts the equipment, the chain tooth assembly 1 drives the inverted triangular structure formed by the conveying hinge 21, the vertical chain 22, and the conveyor belt 23 to move. The scraper assembly 24 located on the conveyor belt 23 deforms to match the inverted triangular structure. Specifically, the scraper 241 is at a specified angle, such as 150°. The positions of the two connecting plates 2421 fixed to the ends of the scraper 241 change accordingly. The connecting group 2424 in the deformation baffle 242 undergoes a fan-shaped structural change relative to the first connecting group 2422 and the second connecting group 2423. Specifically, the first support plate 24... The outer end of 2411 rotates relative to the inner end. The root of the second support plate 242421 fills the gap generated at the end of the adjacent first support plate 242411, and the root of the third support plate 24243 fills the gap generated at the end of the adjacent second support plate 242421. The adjacent guide grooves 242432 fill each other, so that the deformation baffle 242 will not have large gaps, thus ensuring the stability of slag transportation. During operation, the tip plate 32 cleans the outer surface of the conveying hinge 21, and the cleaning roller 42 cleans the inner surface of the conveying hinge 21 to avoid tooth skipping during meshing, thereby improving operational stability. 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 according to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A scraper slag remover with good stability, characterized in that: It includes a triangular chain tooth assembly (1), which meshes with a conveyor assembly (2) for transporting molten slag. A chain scraper assembly (3) that contacts the outer surface of the conveyor assembly (2) is bolted to the inner side of the chain tooth assembly (1), and a back-facing scraper assembly (4) that contacts the outer surface of the conveyor assembly (2) is connected to the outer side of the chain tooth assembly (1).

2. The stable scraper slag remover according to claim 1, characterized in that: The conveying group (2) includes two conveying hinges (21) that mesh with the chain tooth group (1) and a vertical chain (22) that is not on the same plane as the two conveying hinges (21). A conveyor belt (23) for placing molten slag is provided between the vertical chain (22) and the two conveying hinges (21). The vertical chain (22) is fixed to the bottom of the conveyor belt (23). The two conveying hinges (21), the vertical chain (22) and the conveyor belt (23) together form the conveying group (2), which has an inverted triangular cross-section.

3. The stable scraper slag remover according to claim 2, characterized in that: The upper surfaces of the two conveyor belts (23) are equipped with scraper sets (24) for preventing molten slag from slipping as it rises. Each scraper set (24) includes a scraper (241) fixedly connected to the conveyor belt (23). A deformation baffle (242) is installed between the two scrapers (241). One side of the deformation baffle (242) is fixedly connected to the left scraper (241), and the other side of the deformation baffle (242) is fixedly connected to the right scraper (241). The deformed deformation baffle (242) fills the gap between the two scrapers (241).

4. The stable scraper slag remover according to claim 3, characterized in that: The deformation baffle (242) includes two connecting plates (2421). A first connecting group (2422) is fixedly connected to the inner side of the connecting plate (2421) on the left side, and a second connecting group (2423) is fixedly connected to the inner side of the connecting plate (2421) on the right side. A plurality of connecting groups (2424) are hinged between the first connecting group (2422) and the second connecting group (2423).

5. The scraper slag remover with good stability according to claim 4, characterized in that: The connecting assembly (2424) includes a first support plate (24241) located on the inner side, a second support plate (24242) hinged to the first support plate (24241), the second support plate (24242) being located radially outside the first support plate (24241), and a third support plate (24243) hinged to the second support plate (24242) away from the first support plate (24241), the third support plate (24243) being located radially outside the second support plate (24242).

6. The stable scraper slag remover according to claim 5, characterized in that: The first support plate (24241) includes a first support plate (242411) for supporting molten slag transportation and an mounting column (242412) provided near the second support plate (24242). The support plate (41) is strip-shaped. The mounting column (242412) is provided on the side of the first support plate (242411) near the second support plate (24242). The first support plate (242411) and the second support plate (24242) are hinged through the mounting column (242412).

7. The stable scraper slag remover according to claim 6, characterized in that: The second support plate (24242) includes a second support plate (242421). A hinge hole (242422) is provided in the middle of the second support plate (242421). The hinge hole (242422) is installed in conjunction with the mounting post (242412). A movable guide groove (242423) is provided near the third support plate (24243) of the second support plate (24242). The movable guide groove (242423) is slidably connected to the root of the third support plate (24243). A snap-fit ​​protrusion (242424) is also provided on the top of the second support plate (24242). The snap-fit ​​protrusion (242424) is fastened to the root of the third support plate (24243).

8. The scraper slag remover with good stability according to claim 7, characterized in that: The third support plate (24243) has a snap-fit ​​hole (242431) at its root for engaging with the snap-fit ​​protrusion (242424). The third support plate (24243) has guide grooves (242432) on both sides that intersect with the adjacent third support plate (24243). The third support plate (24243) has a reinforcing rib (242433) on the side away from the second support plate (24242).

9. The stable scraper slag remover according to claim 8, characterized in that: The chain scraper assembly (3) includes a support rod (31) connected to the chain teeth and a tip plate (32) located on the side of the support rod (31) away from the chain teeth, the tip plate (32) being fixedly connected to the support rod (31).

10. The stable scraper slag remover according to claim 9, characterized in that: The back-facing scraping assembly (4) includes a support plate (41) hinged to the chain teeth and a cleaning roller (42) hinged to the support plate (41), the cleaning roller (42) being in contact with the inner sides of the two conveying hinges (21).

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