Air-cooled ash discharging hopper for boiler flue

Abstract

According to the air-cooled ash discharging hopper for the boiler flue, the air-cooled ash discharging hopper is applied to the field of boiler ash hoppers, through arrangement of a concentration plate and other devices, air blown out of an air nozzle is blown to the concentration plate, the concentration plate can be cooled, furnace ash falls to the top face of the concentration plate, is concentrated to the bottom end of an ash falling area and falls into an ash discharging groove, and therefore the ash discharging effect is improved. After long-time use, the furnace ash can be accumulated on the surface, close to the ash falling area, of the concentration plate, at the moment, the concentration plate is driven by the overturning shaft to rotate, the face, facing the ash falling area, of the concentration plate faces the cooling and cleaning area, and at the moment, air blown to the concentration plate by the branch air pipes can play a role in cleaning furnace slag accumulated on the surface of the concentration plate; the operation is repeated, so that the concentration plate can be cooled and cleaned at the same time, shutdown maintenance is not needed, the overall working efficiency of the boiler is improved, the cooling effect of the concentration plate is improved, and furnace ash can be better discharged.

Description

Technical Field

[0001] The present invention relates to an air-cooled ash hopper for a boiler flue, and particularly to an air-cooled ash hopper for a boiler flue applied to the field of boiler ash hoppers. Background Art

[0002] A cold ash hopper refers to a hopper-shaped furnace bottom structure formed by water-cooled walls at a certain inclination angle at the lower part of a pulverized coal boiler furnace, mainly used to cool and collect ash slag and discharge it in a solid state.

[0003] The water-cooled ash hopper has a high equipment cost, and after long-term use, the furnace ash accumulates on the inner wall of the furnace bottom, affecting the cooling effect of the furnace ash, and it is necessary to stop the machine to clean the furnace wall, which greatly reduces the working efficiency of the boiler. Therefore, further improvement is needed. Summary of the Invention

[0004] Aiming at the above-mentioned prior art, the technical problem to be solved by the present invention is the problem that the water-cooled ash hopper has a high cost and the working efficiency of the boiler is reduced due to the need for shutdown maintenance when cleaning the furnace wall.

[0005] To solve the above problems, the present invention provides an air-cooled ash hopper for a boiler flue, including a hopper body. A plurality of uniformly distributed turning shafts are rotatably connected to the inner wall of the bottom end of the hopper body. A plurality of concentrating plates are fixedly connected to the outer walls of the plurality of turning shafts. The plurality of concentrating plates are all arranged in an inclined shape and distributed in a W shape. The top surface of the hopper body where the concentrating plates are located is set as an ash falling area, and the bottom surface of the hopper body where the concentrating plates are located is set as a cooling and cleaning area. A dust discharging groove and a cleaning groove are fixedly connected to the bottom end of the hopper body. The dust discharging groove is located at the bottom end of the ash falling area, and the top end of the dust discharging groove is slidably connected to one end of the concentrating plate. The cleaning groove is located at the bottom end of the cooling and cleaning area. A guiding plate is fixedly connected between the adjacent dust discharging groove and the cleaning groove. The guiding plate is arranged in an inclined shape and in a V shape. A bronchus is fixedly connected to the inner wall of the hopper body in the cooling and cleaning area. A plurality of uniformly distributed air spray nozzles are fixedly connected to the outer wall of the bronchus, and the air spray nozzles face the concentrating plates.

[0006] As a further improvement of the present application, a caulking strip is fixedly connected to the inner wall of the hopper body. The caulking strip is located between the tops of the adjacent concentrating plates. The concentrating plates are slidably connected to the caulking strip, and the top end of the caulking strip is arranged in an inclined shape; through the above setting, the caulking strip can play a role in supplementing the gap between the tops of the adjacent concentrating plates and prevent the furnace ash from leaking through the gap.

[0007] As a further improvement of the present application, one end of the caulking strip close to the concentrating plate and one end of the dust discharging groove close to the concentrating plate are both arranged in an arc shape. Both ends of the concentrating plate are arranged in an arc shape and fixedly connected with a sealing strip; through the above setting, the interference of the dust discharging groove and the caulking strip to the rotation of the concentrating plate is avoided, and at the same time, the sealing effect between the concentrating plate and the dust discharging groove and between the concentrating plate and the caulking strip is improved.

[0008] As a further improvement of the present application, a branch water pipe is fixedly connected to the inner wall of the bucket body close to the bronchus, and a plurality of uniformly distributed atomizing nozzles are fixedly connected to the outer wall of the branch water pipe; through the above settings, when the air nozzle blows ash, the atomizing nozzles spray water mist outwards, enabling the furnace ash to fall better into the interior of the cleaning tank.

[0009] As another improvement of the present application, a ventilation pipe is fixedly connected to the side wall of the bucket body close to the cooling and cleaning area, and a filter screen is fixedly connected to the inner wall of the ventilation pipe.

[0010] As a supplement to another improvement of the present application, one end of the ash discharge tank and the cleaning tank both extends to the outside of the bucket body, and spiral conveyor rods are rotatably connected to the inner walls of the ash discharge tank and the cleaning tank. Ash discharge ports are provided at one end of the ash discharge tank and the cleaning tank located outside the bucket body; through the above settings, the spiral conveyor rods can transport the furnace ash collected inside the ash discharge tank and the cleaning tank outwards when rotating.

[0011] As a supplement to another improvement of the present application, an air supply pipe and a water supply pipe are provided on the outer wall of the bucket body. One end of a plurality of air supply pipes is communicated with the bronchus, and one end of a plurality of branch water pipes is communicated with the water supply pipe.

[0012] As another improvement of the present application, a stepping motor and a driving motor are fixedly connected to the outer side wall of one end of the bucket body. One end of the turning shaft is fixedly connected to the output end of the stepping motor, and one end of the spiral conveyor rod is fixedly connected to the output end of the driving motor.

[0013] In summary, through the setting of devices such as the concentrating plate, the wind blown by the air nozzle blows towards the concentrating plate, which can play a role in cooling the concentrating plate. The furnace ash falls onto the top surface of the concentrating plate and accumulates at the bottom of the ash falling area and then drops into the interior of the ash discharge tank, and the furnace ash is transported outwards. After long-term use, the surface of the concentrating plate close to the ash falling area will accumulate furnace ash. At this time, the concentrating plate is rotated by a certain degree through the turning shaft, so that the side of the concentrating plate facing the ash falling area faces the cooling and cleaning area. At this time, the wind blown by the bronchus towards the concentrating plate can play a role in cleaning the slag accumulated on the surface of the concentrating plate. By repeating the above operation, it is possible to clean the concentrating plate while achieving a cooling effect on it, without the need for shutdown maintenance, improving the overall working efficiency of the boiler, and at the same time improving the cooling effect of the concentrating plate, enabling the furnace ash to be discharged better. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the top-down perspective view of the whole in the first embodiment of the present application;

[0015] Figure 2 is the sectional perspective view of the bucket body in the first embodiment of the present application;

[0016] Figure 3 is the front sectional view of the bucket body in the first embodiment of the present application;

[0017] Figure 4 These are the flow trajectory diagrams of the furnace ash in the first and second embodiments of this application;

[0018] Figure 5 These are the state diagrams when the concentration plate rotates in the first and second embodiments of this application;

[0019] Figure 6 These are the left - view three - dimensional diagrams of the bucket body in the second embodiment of this application;

[0020] Figure 7 These are the right - view three - dimensional diagrams of the bucket body in the second embodiment of this application;

[0021] Figure 8 These are the three - dimensional diagrams of the ash discharge chute in the second embodiment of this application;

[0022] Figure 9 These are the three - dimensional diagrams of the concentration plate in the second embodiment of this application.

[0023] Explanation of the reference numerals in the figure:

[0024] 1. Bucket body; 2. Tipping shaft; 3. Concentration plate; 301. Sealing strip; 4. Ash - falling area; 5. Cooling and cleaning area; 6. Ash discharge chute; 7. Bronchus; 701. Air nozzle; 8. Cleaning tank; 9. Guide plate; 10. Caulking strip; 11. Branch water pipe; 1101. Atomizing nozzle; 12. Ventilation pipe; 1201. Filter screen; 13. Screw conveyor rod; 14. Air supply pipe; 15. Water supply pipe; 16. Stepper motor; 17. Driving motor; 18. Ash discharge port. Specific embodiments

[0025] The following will describe the two embodiments of this application in detail with reference to the accompanying drawings.

[0026] The first embodiment:

[0027] Figures 1-5An air-cooled ash hopper for a boiler flue is shown, which includes a hopper body 1. The inner wall at the bottom end of the hopper body 1 is rotatably connected with a plurality of uniformly distributed turning shafts 2. A concentrating plate 3 is fixedly connected to the outer wall of each of the plurality of turning shafts 2. The plurality of concentrating plates 3 are all arranged in an inclined shape and are distributed in a W shape. The top surface of the hopper body 1 where the concentrating plates 3 are located is set as an ash-falling area 4, and the bottom surface of the hopper body 1 where the concentrating plates 3 are located is set as a cooling and cleaning area 5. A dust discharge chute 6 and a cleaning chute 8 are fixedly connected to the bottom end of the hopper body 1. The dust discharge chute 6 is located at the bottom end of the ash-falling area 4, and the top end of the dust discharge chute 6 is slidably connected to one end of the concentrating plate 3. The cleaning chute 8 is located at the bottom end of the cooling and cleaning area 5. A guiding plate 9 is fixedly connected between the adjacent dust discharge chute 6 and cleaning chute 8. The guiding plate 9 is arranged in an inclined shape and is in a V shape. An air duct 7 is fixedly connected to the inner wall of the hopper body 1 inside the cooling and cleaning area 5. A plurality of uniformly distributed air nozzles 701 are fixedly connected to the outer wall of the air duct 7, and the air nozzles 701 face the concentrating plate 3; the air blown out by the air nozzles 701 blows towards the concentrating plate 3, which can play a role in cooling the concentrating plate 3. The furnace ash falls onto the top surface of the concentrating plate 3 and accumulates at the bottom end of the ash-falling area 4 and then falls into the interior of the dust discharge chute 6, and the furnace ash is transported outwards. After long-term use, the surface of the concentrating plate 3 close to the ash-falling area 4 will accumulate furnace ash. At this time, the concentrating plate 3 is driven by the turning shaft 2 to rotate 180 degrees, so that the side of the concentrating plate 3 facing the ash-falling area 4 faces the cooling and cleaning area 5. At this time, the air blown by the air duct 7 towards the concentrating plate 3 can play a role in cleaning the slag accumulated on the surface of the concentrating plate 3. Repeating the above operation can cool and clean the concentrating plate 3 at the same time, not only without shutdown maintenance, but also improving the cooling effect of the concentrating plate 3.

[0028] The second embodiment:

[0029] Figures 4-8 An air-cooled ash hopper for a boiler flue is shown. Different from the first embodiment, a caulking strip 10 is fixedly connected to the inner wall of the hopper body 1. The caulking strip 10 is located between the tops of the adjacent concentrating plates 3. The concentrating plate 3 is slidably connected to the caulking strip 10. The top end of the caulking strip 10 is arranged in an inclined shape; through the above setting, the caulking strip 10 can play a role in supplementing the gap between the tops of the adjacent concentrating plates 3 to prevent the furnace ash from leaking through the gap. The end of the caulking strip 10 close to the concentrating plate 3 and the end of the dust discharge chute 6 close to the concentrating plate 3 are both arranged in an arc shape. Both ends of the concentrating plate 3 are arranged in an arc shape and are fixedly connected with a sealing strip 301; through the above setting, the interference of the dust discharge chute 6 and the caulking strip 10 to the rotation of the concentrating plate 3 is avoided, and at the same time, the sealing effect between the concentrating plate 3 and the dust discharge chute 6 and between the concentrating plate 3 and the caulking strip 10 is improved.

[0030] A water support pipe 11 is fixedly connected to the inner wall of the bucket body 1 close to the bronchus 7, and a plurality of uniformly distributed atomizing nozzles 1101 are fixedly connected to the outer wall of the water support pipe 11; through the above settings, when the air nozzle 701 blows ash, the atomizing nozzles 1101 spray water mist outwards, enabling the furnace ash to better fall into the interior of the cleaning tank 8. A ventilation pipe 12 is fixedly connected to the side wall of the bucket body 1 close to the cooling and cleaning area 5, and a filter screen 1201 is fixedly connected to the inner wall of the ventilation pipe 12.

[0031] One end of the ash discharge chute 6 and the cleaning tank 8 extends to the outside of the bucket body 1, and spiral conveyor rods 13 are rotatably connected to the inner walls of the ash discharge chute 6 and the cleaning tank 8. Ash discharge ports 18 are provided at one ends of the ash discharge chute 6 and the cleaning tank 8 located outside the bucket body 1; through the above settings, when the spiral conveyor rods 13 rotate, they can transport the furnace ash collected inside the ash discharge chute 6 and the cleaning tank 8 outwards. An air supply pipe 14 and a water supply pipe 15 are provided on the outer wall of the bucket body 1. One ends of a plurality of air supply pipes 14 are communicated with the bronchus 7, and one ends of a plurality of water support pipes 11 are communicated with the water supply pipe 15. A stepping motor 16 and a driving motor 17 are fixedly connected to the outer side wall of one end of the bucket body 1. One end of the turning shaft 2 is fixedly connected to the output end of the stepping motor 16, and one end of the spiral conveyor rod 13 is fixedly connected to the output end of the driving motor 17.

[0032] Combined with the current actual requirements, the above-described implementation manner adopted in this application, the scope of protection is not limited thereto. Within the scope of knowledge possessed by those skilled in the art, various changes made without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. An air-cooled ash hopper for a boiler flue, comprising a hopper body (1), characterized in that: The inner wall at the bottom end of the bucket body (1) is rotatably connected to a plurality of evenly distributed turning shafts (2), the outer walls of the plurality of turning shafts (2) are fixedly connected to a centralizing plate (3), the plurality of centralizing plates (3) are arranged in an inclined state and are distributed in a W shape, the top surface of the bucket body (1) located on the centralizing plate (3) is arranged as an ash falling area (4), the bottom surface of the bucket body (1) located on the centralizing plate (3) is arranged as a cooling and cleaning area (5), the bottom end of the bucket body (1) is fixedly connected to an ash discharge trough (6) and a cleaning trough (8), the ash discharge trough (6) being located at the ash falling area (4) The top end of the ash discharge groove (6) is slidably connected to one end of the concentrating plate (3); the cleaning groove (8) is located at the bottom end of the cooling and cleaning zone (5); a guide plate (9) is fixedly connected between the adjacent ash discharge grooves (6) and cleaning grooves (8); the guide plate (9) is arranged to be inclined and V-shaped; the inner wall of the bucket body (1) located inside the cooling and cleaning zone (5) is fixedly connected to a bronchus (7); the outer wall of the bronchus (7) is fixedly connected to a plurality of evenly distributed air nozzles (701), and the air nozzles (701) face the concentrating plate (3).

2. The air-cooled lower ash hopper for a boiler flue according to claim 1, characterized in that: A caulking strip (10) is fixedly connected to the inner wall of the bucket body (1), the caulking strip (10) is located between the top ends of adjacent concentrating plates (3), the concentrating plates (3) are slidably connected to the caulking strip (10), and the top end of the caulking strip (10) is arranged in an inclined shape.

3. The air-cooled lower ash hopper for a boiler flue according to claim 2, characterized in that: One end of the caulking strip (10) close to the centralizing plate (3) and one end of the ash discharge slot (6) close to the centralizing plate (3) are both arranged in an arc shape, and both ends of the centralizing plate (3) are arranged in an arc shape and are fixedly connected with a sealing strip (301).

4. The air-cooled lower ash hopper for a boiler flue according to claim 1, characterized in that: The inner wall of the bucket body (1) close to the bronchial tube (7) is fixedly connected to a branch water pipe (11), and the outer wall of the branch water pipe (11) is fixedly connected to a plurality of evenly distributed atomizing nozzles (1101).

5. The air-cooled lower ash hopper for a boiler flue according to claim 1, characterized in that: A ventilation pipe (12) is fixedly connected to the side wall of the bucket body (1) close to the cooling and cleaning area (5), and a filter screen (1201) is fixedly connected to the inner wall of the ventilation pipe (12).

6. The air-cooled lower ash hopper for a boiler flue according to claim 1, characterized in that: One end of the ash discharge trough (6) and the cleaning trough (8) both extend to the outside of the bucket body (1), and the inner walls of the ash discharge trough (6) and the cleaning trough (8) are rotatably connected to a spiral conveying rod (13), and one end of the ash discharge trough (6) and the cleaning trough (8) located outside the bucket body (1) is provided with an ash discharge port (18).

7. The air-cooled lower ash hopper for a boiler flue according to claim 4, characterized in that: An air supply pipe (14) and a water supply pipe (15) are provided on the outer wall of the bucket body (1); one end of the plurality of air supply pipes (14) is connected to the bronchial pipe (7); one end of the plurality of branch water pipes (11) is connected to the water supply pipe (15).

8. The air-cooled lower ash hopper for a boiler flue according to claim 4, characterized in that: The outer side wall at one end of the bucket body (1) is fixedly connected to a stepping motor (16) and a driving motor (17), one end of the flip shaft (2) is fixedly connected to the output end of the stepping motor (16), and one end of the spiral conveying rod (13) is fixedly connected to the output end of the driving motor (17).

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