Deslagging device for fluidized bed boiler

Abstract

The utility model belongs to the technical field of boiler slag removal, and particularly relates to a slag discharging device for a fluidized bed boiler, which comprises a recovery furnace, an anti-blocking mechanism is fixedly mounted at the top of the recovery furnace, the anti-blocking mechanism comprises a first motor, a half gear is fixedly mounted at the output end of the first motor, a cross rod is arranged in an inner cavity of the recovery furnace, and the cross rod is connected with the first motor. A top rod is fixedly installed at the top of the cross rod, a sliding rod is fixedly installed at the top of the cross rod, a toothed plate is fixedly installed on the surface of the sliding rod, and the toothed plate is used in cooperation with teeth of a half gear; the anti-blocking mechanism is arranged, the ejector rod moves upwards in the inner cavity of the connecting port of the recovery furnace so as to dredge residues, and when a half gear does not make contact with teeth of a toothed plate, the ejector rod can move downwards under the counter-acting force of a tension spring, so that vertical movement of the ejector rod is achieved, and continuous dredging work on the residues is achieved; and blockage of residues can be avoided, and normal work of the recovery furnace is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of boiler slag removal technology, specifically a slag removal device for fluidized bed boilers. Background Technology

[0002] Circulating fluidized bed combustion technology is a highly efficient and clean combustion technology that has developed rapidly in recent decades. This technology has been widely used in various fields such as power plant boilers, industrial boilers and waste treatment and utilization in various countries around the world. In particular, it has shown stronger competitiveness than other boilers in the combustion of low-quality coal and oil shale.

[0003] When a fluidized bed boiler is in use, a large amount of residue will accumulate at the bottom. Usually, the residue is collected by connecting to a recovery furnace. During the collection process, because the residue is of different sizes, the rate at which the residue is generated is also different. When large pieces of residue are generated rapidly, they may cause blockages in the process of being discharged into the inner cavity of the recovery furnace, reducing the discharge efficiency. Utility Model Content

[0004] To address the aforementioned problems, this utility model designs a slag removal device for fluidized bed boilers, which has a slag unblocking function to avoid blockage and reduced discharge efficiency when large pieces of slag are generated rapidly.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A slag removal device for a fluidized bed boiler includes a recovery furnace, wherein an anti-clogging mechanism is fixedly installed on the top of the recovery furnace;

[0007] The anti-blocking mechanism includes a first motor, a half gear fixedly installed at the output end of the first motor, a crossbar provided in the inner cavity of the recycling furnace, a top rod fixedly installed at the top of the crossbar, a sliding rod fixedly installed at the top of the crossbar, and a toothed plate fixedly installed on the surface of the sliding rod, the toothed plate engaging with the teeth of the half gear.

[0008] Preferably, a second motor is fixedly installed on one side of the recycling furnace, a rotating rod is fixedly installed at the output end of the second motor, an impact block is fixedly installed at one end of the rotating rod, a support block is fixedly installed on the inner wall of the recycling furnace, a spring is fixedly installed on the top of the support block, a screening plate is fixedly installed at one end of the spring, and the surface of the impact block cooperates with the bottom of the screening plate.

[0009] Preferably, a guide rod is fixedly installed on the top of the recycling furnace, and a guide ring is fixedly installed on one side of the sliding rod, with the inner cavity of the guide ring slidably connected to the surface of the guide rod.

[0010] Preferably, a telescopic rod is fixedly installed on the top of the support block, and the telescopic end of the telescopic rod is fixedly connected to the bottom of the screening plate.

[0011] Preferably, a tension spring is fitted onto the surface of the guide rod, one end of which is fixedly connected to the top of the recycling furnace, and the other end of which is fixedly connected to the bottom of the guide ring.

[0012] Preferably, a triangular block is fixedly installed on the surface of the top rod, and the number of the triangular blocks is several.

[0013] Preferably, a stop is fixedly installed on the top of the guide rod, and the bottom of the stop cooperates with the top of the guide ring.

[0014] The advantages of this utility model of slag removal device for fluidized bed boilers are: it is equipped with an anti-clogging mechanism, in which the push rod moves upward in the inner cavity of the recovery furnace connection port to clear the residue. When the half gear is no longer in contact with the teeth of the toothed plate, the push rod can be moved downward under the reaction force of the tension spring, thereby realizing the up and down movement of the push rod and thus achieving continuous clearing of the residue, avoiding clogging by the residue and ensuring the normal operation of the recovery furnace. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the slag removal device for a fluidized bed boiler according to this utility model;

[0016] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0017] Figure 3 This is a cross-sectional view of the recycling furnace.

[0018] Figure 4 This is a schematic diagram of the sieve plate.

[0019] In the diagram: 1. Recycling furnace; 2. Anti-blocking mechanism; 201. First motor; 202. Half gear; 203. Crossbar; 204. Top rod; 205. Sliding rod; 206. Toothed plate; 3. Second motor; 4. Rotating rod; 5. Impact block; 6. Support block; 7. Spring; 8. Screening plate; 9. Guide rod; 10. Telescopic rod; 11. Tension spring; 12. Guide ring; 13. Triangular block; 14. Stop block. Detailed Implementation

[0020] The specific embodiments of this utility model will now be described in further detail with reference to the accompanying drawings.

[0021] Reference Figures 1 to 3 The slag removal device for fluidized bed boilers in this specific embodiment includes a recovery furnace 1, and an anti-blocking mechanism 2 is fixedly installed on the top of the recovery furnace 1.

[0022] The anti-blocking mechanism 2 includes a first motor 201, a half gear 202 is fixedly installed at the output end of the first motor 201, a crossbar 203 is provided in the inner cavity of the recycling furnace 1, a top rod 204 is fixedly installed at the top of the crossbar 203, a sliding rod 205 is fixedly installed at the top of the crossbar 203, a toothed plate 206 is fixedly installed on the surface of the sliding rod 205, and the toothed plate 206 is used in conjunction with the teeth of the half gear 202.

[0023] Reference Figure 3 and Figure 4 A second motor 3 is fixedly installed on one side of the recycling furnace 1. A rotating rod 4 is fixedly installed at the output end of the second motor 3. An impact block 5 is fixedly installed at one end of the rotating rod 4. A support block 6 is fixedly installed on the inner wall of the recycling furnace 1. A spring 7 is fixedly installed on the top of the support block 6. A screening plate 8 is fixedly installed at one end of the spring 7. The surface of the impact block 5 cooperates with the bottom of the screening plate 8. When the residue enters the recycling furnace 1, the second motor 3 is started by an external power source. The second motor 3 drives the rotating rod 4 to rotate, thereby driving the impact block 5 to rotate. At the same time, the impact block 5 can impact the bottom of the screening plate 8, thereby driving the screening plate 8 to move upward. At the same time, it drives the spring 7 to extend. When the impact block 5 no longer contacts the bottom of the screening plate 8, under the reaction force of the spring 7, it can drive the screening plate 8 to move downward, thereby realizing the up and down shaking of the screening plate 8, which can separate the larger residue from the smaller residue, making it easier for subsequent processing and utilization.

[0024] Reference Figure 2 A guide rod 9 is fixedly installed on the top of the recycling furnace 1, and a guide ring 12 is fixedly installed on one side of the sliding rod 205. The inner cavity of the guide ring 12 is slidably connected to the surface of the guide rod 9. Through the slidable connection between the guide rod 9 and the guide ring 12, the movement of the sliding rod 205 can be guided, so that the sliding rod 205 can move up and down while remaining vertical.

[0025] Reference Figure 4 A telescopic rod 10 is fixedly installed on the top of the support block 6. The telescopic end of the telescopic rod 10 is fixedly connected to the bottom of the screening plate 8. By setting the telescopic rod 10, the movement of the screening plate 8 can be guided, so that the screening plate 8 can be kept vertically shaking up and down.

[0026] Reference Figure 2 A tension spring 11 is fitted on the surface of the guide rod 9. One end of the tension spring 11 is fixedly connected to the top of the recycling furnace 1, and the other end of the tension spring 11 is fixedly connected to the bottom of the guide ring 12. By setting the tension spring 11, the tension spring 11 can be stretched during the upward movement of the sliding rod 205. When the half gear 202 and the tooth plate 206 are not in contact, the sliding rod 205 can be driven to move downward under the reaction force of the tension spring 11, so as to ensure the normal downward movement of the top rod 204.

[0027] Reference Figure 3 Triangular blocks 13 are fixedly installed on the surface of the top rod 204. There are several triangular blocks 13. By setting the triangular blocks 13, the ash and slag can be crushed, and the anti-clogging effect can be further improved.

[0028] Reference Figure 2 A stop 14 is fixedly installed on the top of the guide rod 9. The bottom of the stop 14 cooperates with the top of the guide ring 12. By setting the stop 14, the upward movement distance of the sliding rod 205 can be limited, thus preventing the guide ring 12 from separating from the guide rod 9.

[0029] Working Principle: After the fluidized bed boiler completes the reaction, a large amount of residue accumulates at the bottom of the boiler. The bottom of the boiler has holes that connect to the recovery furnace 1, allowing the slag to be discharged into the recovery furnace 1. During the slag discharge process, the user starts the first motor 201 via an external power supply. The first motor 201 drives the half-gear 202 to rotate. When the teeth of the half-gear 202 contact the toothed plate 206, it moves the toothed plate 206 upwards. Through the connection of the crossbar 203, the top rod 204 moves upwards within the inner cavity of the connection port of the recovery furnace 1, thus clearing the residue. When the half-gear 202 is no longer in contact with the teeth of the toothed plate 206, the reaction force of the tension spring 11 causes the top rod 204 to move downwards, thus achieving the up-and-down movement of the top rod 204. This continuous clearing of the residue prevents blockage and ensures the normal operation of the recovery furnace 1.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A slagging device for a fluidized bed boiler, characterized in that: Including the recovery furnace (1), the top of recovery furnace (1) is fixedly installed with anti-blocking mechanism (2); The anti-blocking mechanism (2) comprises a first motor (201), and the output end of the first motor (201) is fixedly installed with a half gear (202); the inner cavity of the recovery furnace (1) is provided with a cross rod (203), the top of the cross rod (203) is fixedly installed with a top rod (204), the top of the cross rod (203) is fixedly installed with a sliding rod (205), the surface of the sliding rod (205) is fixedly installed with a toothed plate (206), and the toothed plate (206) is used in cooperation with the teeth of the half gear (202).

2. A slagging device for a fluidized bed boiler according to claim 1, characterized in that The recovery furnace (1) is fixedly installed with a second motor (3) on one side, the output end of the second motor (3) is fixedly installed with a rotating rod (4), one end of the rotating rod (4) is fixedly installed with an impact block (5), the inner wall of the recovery furnace (1) is fixedly installed with a supporting block (6), the top of the supporting block (6) is fixedly installed with a spring (7), one end of the spring (7) is fixedly installed with a screening plate (8), and the surface of the impact block (5) is used in cooperation with the bottom of the screening plate (8).

3. A slagging device for a fluidized bed boiler according to claim 1, characterized in that The top of the recovery furnace (1) is fixedly installed with a guide rod (9), one side of the sliding rod (205) is fixedly installed with a guide ring (12), and the inner cavity of the guide ring (12) is in sliding connection with the surface of the guide rod (9).

4. A slagging device for a fluidized bed boiler according to claim 2, characterized in that The top of the supporting block (6) is fixedly installed with a telescopic rod (10), and the telescopic end of the telescopic rod (10) is fixedly connected with the bottom of the screening plate (8).

5. A slagging device for a fluidized bed boiler according to claim 3, characterized in that The surface of the guide rod (9) is provided with a tension spring (11), one end of the tension spring (11) is fixedly connected with the top of the recovery furnace (1), and the other end of the tension spring (11) is fixedly connected with the bottom of the guide ring (12).

6. A slagging device for a fluidized bed boiler according to claim 1, characterized in that The surface of the top rod (204) is fixedly installed with a triangular block (13), and the number of the triangular block (13) is several.

7. A slagging device for a fluidized bed boiler according to claim 3, characterized in that The top of the guide rod (9) is fixedly installed with a stop block (14), and the bottom of the stop block (14) is used in cooperation with the top of the guide ring (12).

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