Boiler feeding device

Abstract

The utility model relates to the technical field of boiler feeding devices, in particular to a boiler feeding device which comprises a feeding shell and a spiral feeder, the spiral feeder is fixedly connected to the lower side of the feeding shell, the end, away from the feeding shell, of the spiral feeder is fixedly connected with an external boiler, and the end, away from the feeding shell, of the spiral feeder is fixedly connected with the external boiler. A crank column is rotationally connected to the feeding shell, two block selecting discs are fixedly connected to the crank column, two block selecting grooves are formed in the feeding shell, the block selecting discs abut against the inner walls of the block selecting grooves, and the lower ends of the block selecting grooves are communicated with a spiral feeder. A powder discharging groove used for discharging crushed mineral aggregate powder is formed in the side, facing the feeding shell, of each block selecting groove, and a first motor is fixedly connected to the outer wall of the feeding shell. According to the technical scheme, the size of mineral aggregate fed into the boiler is more uniform, the mineral aggregate can be dried and dehydrated, the combustion stability of the boiler is guaranteed, the labor intensity of workers is reduced, and meanwhile the safety of surrounding workers during operation of the boiler is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of a boiler feeding device, and specifically, to a boiler feeding device. Background Art

[0002] The feeding system of a boiler refers to the process of supplying fuel or fuel to the boiler. This system usually includes equipment for fuel storage, transportation, pretreatment, and feeding into the combustion chamber. Different types of boilers (such as coal-fired boilers, gas boilers, biomass boilers) will have different feeding system designs to ensure that fuel can be effectively and safely supplied to the boiler combustion chamber to generate heat. In coal-fired boilers, a screw feeder is usually used to transport ore materials.

[0003] In the prior art, the surface of packaged ore materials is cut, and then the ore materials are fed into the feeding device. When the ore materials are transported to the boiler for combustion, due to the uneven sizes of the ore materials, the combustion time and combustion effect of a single batch of ore materials are unstable. Therefore, it is necessary for workers to regularly observe the combustion situation in the boiler, which increases the labor intensity of the workers. And some ore materials will adsorb moisture during transportation. These ore materials will generate a large amount of water vapor during combustion, which will increase the pressure in the boiler. Excessive pressure will cause instability at the connection between the feeding device and the boiler, thus affecting the safety of operating personnel. Content of the Utility Model

[0004] The utility model provides a boiler feeding device, which makes the sizes of the ore materials fed into the boiler more uniform, and can perform drying and dehydration treatment on the ore materials, ensuring the stability of boiler combustion, reducing the labor intensity of workers, and at the same time ensuring the safety of workers around the boiler during operation.

[0005] The technical solution of the utility model is as follows:

[0006] A boiler feeding device includes a feeding housing and a screw feeder. The screw feeder is fixedly connected to the lower side of the feeding housing, and the end of the screw feeder away from the feeding housing is fixedly connected to an external boiler. A crank column is rotatably connected to the feeding housing. Two selection disks are fixedly connected to the crank column. Two selection slots are formed in the feeding housing. Each selection disk abuts against the inner wall of each selection slot. The lower end of each selection slot communicates with the screw feeder. A powder discharge slot for discharging ore powder fragments is formed on one side of each selection slot facing the feeding housing. A first motor is fixedly connected to the outer wall of the feeding housing. The driving shaft of the first motor is fixedly connected to the crank column. A crushing and dehydrating assembly for dehydrating and crushing ore powder is connected to the upper side of the crank column.

[0007] Furthermore, the shredded material dehydration assembly includes a linkage plate, a protective block, and an air inflation pump. The linkage plate is rotatably connected to the crank column. One end of the linkage plate away from the crank column is hinged with a material guiding plate. Two turnover plates are hinged at both ends of the material guiding plate. Two coaxial turnover plates are hinged with a limiting plate at one end away from the material guiding plate. Each limiting plate is slidably connected to the feeding housing.

[0008] The protective block is fixedly connected to the inner wall of the feeding housing. Two dehydration columns with a plurality of air holes on the column surfaces are rotatably connected to the protective block. A limiting sleeve is slidably connected to one side of each dehydration column facing the inner wall of the feeding housing. An air inlet block is rotatably connected to one end of each limiting sleeve away from the dehydration column. Each air inlet block is fixedly connected to the upper side of the adjacent limiting plate.

[0009] The air outlet pipes of the air inflation pump are respectively clamped with the two air inlet blocks.

[0010] Furthermore, first gears are fixedly connected to one ends of the two dehydration columns close to each other. A second gear is meshed between the two first gears. The second gear is coaxially connected with a second motor. The second motor is fixedly connected to the outer wall of the feeding housing. The driving shaft of the second motor is fixedly connected to the second gear. The second gear and the two first gears are all arranged inside the protective block.

[0011] Furthermore, a plurality of stirring blocks are fixedly connected to each of the limiting sleeves.

[0012] Furthermore, a protective plate is fixedly connected to the inner wall of the feeding housing. Two limiting plates are fixedly connected to the protective plate. A limiting groove is formed in each of the limiting plates. The material guiding plate abuts against the inner walls of the limiting grooves on both sides.

[0013] Furthermore, an extrusion block is fixedly connected to one side of each limiting plate away from the air inlet block. The lower side surface of the extrusion block is flush with the lower side surface of the protective block.

[0014] Furthermore, the upper side surface of the protective block is a conical surface.

[0015] The beneficial effects of the present utility model are as follows:

[0016] The ore powder in the ore is discharged through the powder discharge chute. The sizing disc evenly feeds and transports the ore with uniform size, ensuring that the ore fed into the boiler has a uniform size, separating the lumpy and powdery ore, ensuring the stability of the combustion effect and combustion time. The crushing and dewatering assembly stirs and jets the piled ore, crushing the larger lumpy ore, making the size of the ore fed into the boiler more uniform, ensuring the stability of the boiler combustion, enabling workers not to observe the boiler irregularly, reducing the labor intensity of workers, and being able to dehydrate some ore with moisture, enabling the ore to be dried before being fed into the boiler, further ensuring the stability of the boiler combustion, and also ensuring the safety of workers during boiler operation. Brief Description of the Drawings

[0017] The following further elaborates on the present utility model in conjunction with the drawings and specific embodiments.

[0018] Figure 1 Is the front-axis schematic diagram of the present utility model;

[0019] Figure 2 Is the front-axis semi-sectional schematic diagram of the present utility model;

[0020] Figure 3 Is Figure 2 The enlarged schematic diagram of A in

[0021] Figure 4 Is Figure 2 The enlarged schematic diagram of B in

[0022] Figure 5 Is the partial enlarged explosion schematic diagram of the present utility model;

[0023] Figure 6 Is the sectional front-axis schematic diagram of the present utility model;

[0024] Figure 7 Is the sectional enlarged schematic diagram of the present utility model.

[0025] In the figures: 11. Feeding housing; 111. Powder discharge chute; 12. Screw feeder; 13. Crank column; 14. Sizing disc; 141. Sizing groove; 15. Protective plate; 16. Limiting plate; 161. Limiting groove; 17. First motor; 2. Crushing and dewatering assembly; 21. Linking plate; 22. Guide plate; 23. Flipping plate; 24. Limiting plate; 241. Extrusion block; 25. Protective block; 26. Dewatering column; 261. First gear; 262. Second gear; 27. Limiting sleeve; 271. Stirring block; 28. Air inlet block; 29. Second motor; 210. Air inflation pump. Specific Embodiments

[0026] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

[0027] As Figures 1 to 7 shown, this embodiment proposes a boiler feeding device, which includes a feeding housing 11 and a screw feeder 12. The screw feeder 12 is fixedly connected to the lower side of the feeding housing 11. One end of the screw feeder 12 away from the feeding housing 11 is fixedly connected to an external boiler. A crank column 13 is rotatably connected to the feeding housing 11. Two selection disks 14 are fixedly connected to the crank column 13. Two selection slots 141 are opened in the feeding housing 11. Each selection disk 14 abuts against the inner wall of each selection slot 141. The lower ends of each selection slot 141 communicate with the screw feeder 12 respectively, and a powder discharge groove 111 for discharging mineral powder is opened on the side of each selection slot 141 facing the feeding housing 11. The mineral powder in the ore is discharged through the powder discharge groove 111. The selection disk 14 transports the ore with uniform size for uniform feeding, ensuring that the ore fed into the boiler has a uniform size, separating the lumps and powders of the ore, ensuring the stability of the combustion effect and combustion time, so that workers do not need to observe the boiler irregularly, reducing the labor intensity of workers;

[0028] A crushing and dewatering assembly 2 for dehydrating and crushing the mineral powder is connected to the upper side of the crank column 13. The crushing and dewatering assembly 2 stirs and jets air on the piled ore, so that the larger lumped ore is crushed, making the size of the ore fed into the boiler more uniform, ensuring the stability of boiler combustion, and being able to dehydrate some of the ore with moisture, so that the ore can be dried before being fed into the boiler, further ensuring the stability of boiler combustion, and also ensuring the safety of workers during boiler operation.

[0029] As Figures 2 to 5 and Figure 7As shown in the figure, the crushed material dehydration assembly 2 includes a linkage plate 21, a protective block 25, and an air inflation pump 210. The linkage plate 21 is rotatably connected to the crank column 13. One end of the linkage plate 21 away from the crank column 13 is hinged to the guide plate 22. Two turning plates 23 are hinged to both ends of the guide plate 22. One end of two coaxial turning plates 23 away from the guide plate 22 is hinged to the limit plate 24. Each limit plate 24 is slidably connected to the feeding housing 11, so that the guide plate 22 moves up and down through the rotation of the crank column 13. When the guide plate 22 moves upward, it will push the limit plates 24 on both sides to both sides, increasing the gap between the limit plate 24 and the protective block 25, enabling more ore to fall on the guide plate 22 through this gap. Then, some fine ore powder will slide into the powder discharge groove 111 through the inclined surface of the guide plate 22. Some ore larger than the size of the powder discharge groove 111 will slide down along the inclined surface on one side of the powder discharge groove 111 and then move through the ore selection plate 14. When the guide plate 22 moves downward, it drives the limit plates 24 on both sides to move towards the protective block 25, reducing the gap between the limit plate 24 and the protective block 25, enabling some ore larger than the maximum gap between the limit plate 24 and the protective block 25 to be squeezed and crushed by this moving force, thereby ensuring that the size of the ore fed into the screw feeder 12 is more uniform and ensuring the stability of the combustion effect of the ore;

[0030] The protective block 25 is fixedly connected to the inner wall of the feeding housing 11. A dehydration column 26 with a plurality of air holes opened on two column surfaces is rotatably connected to the protective block 25. One side of the dehydration column 26 facing the inner wall of the feeding housing 11 is slidably connected to the limit sleeve 27, enabling the dehydration column 26 and the limit sleeve 27 to move relative to each other while ensuring synchronous rotation, ensuring the stability of gas transmission and not affecting the dehydration operation of the dehydration column 26 on the surrounding ore. One end of the limit sleeve 27 away from the dehydration column 26 is rotatably connected to the air inlet block 28. Each air inlet block 28 is fixedly connected to the upper side of the adjacent limit plate 24;

[0031] The outlet pipes of the air inflation pump 210 are respectively clamped to the two air inlet blocks 28, and air is sent into the dehydration column 26 through the air inflation pump 210.

[0032] As Figure 2 and Figures 4 to 5As shown, one end of two dehydration columns 26 close to each other is fixedly connected to a first gear 261. A second gear 262 is engaged between the two first gears 261. The second gear 262 is coaxially connected to a second motor 29. The second motor 29 is fixedly connected to the outer wall of the feeding housing 11. The drive shaft of the second motor 29 is fixedly connected to the second gear 262. The second gear 262 and the two first gears 261 are both arranged inside a protective block 25. The second motor 29 drives the dehydration columns 26 on both sides to rotate synchronously, enabling the two dehydration columns 26 to blow air at the surrounding ore through air holes in a rotary manner, thereby dehydrating some ore adhering with moisture, making this part of water vapor move upward and discharged, ensuring the dryness of the ore fed into the boiler, and further ensuring the stability of the boiler combustion.

[0033] As Figure 2 and Figures 4 to 5 shown, a number of stirring blocks 271 are fixedly connected to a limiting sleeve 27, causing the stirring blocks 271 to rotate as the limiting sleeve 27 rotates, thereby stirring and impacting the ore around the limiting sleeve 27, enabling the water vapor in the ore to be more easily discharged, and crushing some larger ore, ensuring the average size of the ore and making the combustion of the ore fed into the boiler more uniform.

[0034] As Figure 2 ~and Figure 3 shown, a protective plate 15 is fixedly connected to the inner wall of the feeding housing 11. Two limiting plates 16 are fixedly connected to the protective plate 15. A limiting groove 161 is formed on the limiting plate 16. A guiding plate 22 abuts against the inner walls of the limiting grooves 161 on both sides, restricting the upward movement of the guiding plate 22 by the inner walls of the limiting grooves 161 on both sides and enabling the up and down movement of the guiding plate 22 to be stable.

[0035] As Figures 2 to 4 shown, one side of each limiting plate 24 away from the air inlet block 28 is fixedly connected to an extrusion block 241. The lower side surface of the extrusion block 241 is flush with the lower side surface of the protective block 25. When the two extrusion blocks 241 move towards each other, the extrusion blocks 241 will extrude the ore between the extrusion blocks 241 and the protective block 25, crushing some ore larger than the rest of the ore by this extrusion force.

[0036] As Figure 2 and Figure 4 shown, the upper side surface of the protective block 25 is a conical surface, preventing the ore falling into the feeding housing 11 from accumulating on the protective block 25 and preventing the ore from staying on the protective block 25.

[0037] The principle of this embodiment is:

[0038] Feed the piled ore materials into the feeding housing 11. Ore materials of different sizes fall on the protective blocks 25, then along the conical surfaces on the protective blocks 25, fall on both sides of the protective blocks 25, and then fall on the limiting plates 24. Drive the second motor 29 to drive the limiting sleeves 27 on both sides to rotate, so that the dehydration columns 26 on both sides jet air at the surrounding ore materials in a spiral manner, drying and dehydrating some of the ore materials with moisture. Then, the rotation of the dehydration columns 26 will drive the stirring blocks 271. The stirring blocks 271 can stir the surrounding ore materials, increasing the gaps between the ore materials, making it easier for water vapor to pass through these gaps, and thus completing the drying and dehydration work of the ore materials. Drive the first motor 17 to drive the crank column 13 to rotate, so that the guide plate 22 moves up and down along with the rotation of the crank column 13;

[0039] When the guide plate 22 moves upward, it will push the limiting plates 24 on both sides to both sides, increasing the gap between the limiting plates 24 and the protective blocks 25, enabling more ore materials to pass through this gap and fall on the guide plate 22. And the limiting sleeves 27 will also slide along the dehydration columns 26 to both sides, exposing more air holes on the dehydration columns 26, increasing the dehydration area for the surrounding ore materials. Then, some fine ore powders will slide into the powder discharge groove 111 through the inclined surface of the guide plate 22, and some ore materials larger than the size of the powder discharge groove 111 will slide down along the inclined surface on one side of the powder discharge groove 111 and then move through the sorting block plate 14;

[0040] When the guide plate 22 moves downward, it drives the limiting plates 24 on both sides to move towards the protective blocks 25, and the limiting sleeves 27 will also slide towards each other along the dehydration columns 26, reducing the leakage of air holes on the dehydration columns 26, thereby increasing the air flow pressure of the starting jet, and then separating the crushed ore materials into ore powder and ore materials, making it easier for the ore powder and ore materials to fall into the powder discharge groove 111 and the sorting groove 141 in subsequent operations. At the same time, it reduces the gap between the limiting plates 24 and the protective blocks 25, enabling some ore materials larger than the maximum gap between the limiting plates 24 and the protective blocks 25 to be squeezed and crushed by this moving force, thus ensuring that the size of the ore materials fed into the screw feeder 12 is more uniform and ensuring the stability of the combustion effect of the ore materials.

[0041] The above is only the preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A boiler feeding device, comprising a feeding housing (11) and a screw feeder (12), the screw feeder (12) is fixedly connected to the lower side of the feeding housing (11), and one end of the screw feeder (12) far from the feeding housing (11) is fixedly connected to an external boiler, characterized in that, A crank column (13) is rotatably connected to the feeding housing (11). Two selection disc (14) are fixedly connected to the crank column (13). Two selection slots (141) are formed in the feeding housing (11). Each selection disc (14) abuts against the inner wall of each selection slot (141). The lower end of each selection slot (141) communicates with the screw feeder (12). A powder discharge groove (111) for discharging the crushed ore powder is formed on one side of each selection slot (141) facing the feeding housing (11). A first motor (17) is fixedly connected to the outer wall of the feeding housing (11). The drive shaft of the first motor (17) is fixedly connected to the crank column (13). A crushing and dewatering assembly (2) for dewatering and crushing the ore powder is connected above the crank column (13).

2. The boiler feeding device according to claim 1, wherein The crushing and dewatering assembly (2) includes a linkage plate (21), a protective block (25) and an air pump (210). The linkage plate (21) is rotatably connected to the crank column (13). A guide plate (22) is hinged to one end of the linkage plate (21) away from the crank column (13). Two turning plates (23) are hinged to both ends of the guide plate (22). A limiting plate (24) is hinged to one end of the two coaxial turning plates (23) away from the guide plate (22). Each limiting plate (24) is slidably connected to the feeding housing (11). The protective block (25) is fixedly connected to the inner wall of the feeding housing (11). Two dewatering columns (26) with a plurality of air holes formed on the column surface are rotatably connected to the protective block (25). A limiting sleeve (27) is slidably connected to one side of each dewatering column (26) facing the inner wall of the feeding housing (11). An air inlet block (28) is rotatably connected to one end of the limiting sleeve (27) away from the dewatering column (26). Each air inlet block (28) is fixedly connected to the upper side of the adjacent limiting plate (24). The air outlet pipes of the air pump (210) are respectively clamped to the two air inlet blocks (28).

3. The boiler feeding device according to claim 2, wherein, First gears (261) are fixedly connected to the adjacent ends of the two dewatering columns (26). A second gear (262) is meshed between the two first gears (261). The second gear (262) is coaxially connected to a second motor (29). The second motor (29) is fixedly connected to the outer wall of the feeding housing (11). The drive shaft of the second motor (29) is fixedly connected to the second gear (262). The second gear (262) and the two first gears (261) are both arranged inside the protective block (25).

4. The boiler feeding device according to claim 3, characterized in that, A plurality of stirring blocks (271) are fixedly connected to each of the limiting sleeves (27).

5. The boiler feeding device according to claim 2, characterized in that, A protective plate (15) is fixedly connected to the inner wall of the feeding housing (11). Two limiting plates (16) are fixedly connected to the protective plate (15). A limiting groove (161) is formed on each of the limiting plates (16). The guide plate (22) abuts against the inner walls of the limiting grooves (161) on both sides.

6. The boiler feeding device according to claim 2, characterized in that, An extrusion block (241) is fixedly connected to one side of each limiting plate (24) away from the air inlet block (28). The lower side of the extrusion block (241) is flush with the lower side of the protective block (25).

7. The boiler feeding device according to claim 2, characterized in that The upper side of the protective block (25) is a conical surface.

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