A slag recovery device for a thermal power boiler

Abstract

A kind of fire power boiler slag recovery device.Currently, existing fire power plant boiler slag recovery device is short of crushing treatment when in use, since the slag itself is in block form, thus there is gap after piling, and it occupies storage space.The utility model discloses a hopper, the inner ring of the hopper is installed with a group of atomizing spray head in middle part, hopper is connected with water tank and pre-pulverizing mechanism respectively, pre-pulverizing mechanism is installed with auger conveying pipe at bottom, the end of auger conveying pipe is provided with recovery mechanism;The recovery mechanism includes recovery tank, the inner wall of both sides and rear end of recovery tank is provided with clamping groove, the inside of clamping groove has cover plate, the rear end of cover plate is centrally provided with sealing pipe groove, the same discharge slot is provided in the lower position of both sides and front end of recovery tank, the inside of discharge slot is provided with discharge sealing plate.The utility model is applied to fire power boiler.

Description

Technical Field

[0001] This utility model relates to a slag recovery device for thermal power boilers. Background Technology

[0002] Currently, existing thermal power boiler slag recycling devices directly pour the slag into the recycling bin. Since the slag is poured out of the combustion furnace along with a large amount of ash, direct dumping causes the ash to spread into the air, polluting the environment and affecting the health of operators. Furthermore, existing thermal power plant boiler slag recycling devices lack crushing processing. Because the slag itself exists in lumps, gaps exist after stacking, occupying storage space and impacting practical use. Summary of the Invention

[0003] The purpose of this invention is to solve the aforementioned technical problems and provide a slag recovery device for thermal power boilers.

[0004] The above objectives are achieved through the following technical solutions: A slag recycling device for thermal power boilers comprises: a feeding hopper, wherein a set of atomizing nozzles is installed in the middle of the inner ring of the feeding hopper, the feeding hopper is connected to a water tank and a pre-crushing mechanism respectively, an auger conveying pipe is installed at the bottom of the pre-crushing mechanism, and a recycling mechanism is provided at the end of the auger conveying pipe. The recycling mechanism includes a recycling bin, with slots on the inner walls of the bin's sides and rear end. The inner side of the slots has a cover plate, and a sealing groove is centrally located at the rear end of the cover plate. The same material discharge trough is located on the lower front side and side of the recycling bin, and a material discharge sealing plate is installed inside the material discharge trough.

[0005] The hopper wall has a cavity inside, corresponding to a set of atomizing nozzles, and the cavity is connected to the inside of the water tank through a water supply pipe.

[0006] The aforementioned thermal power boiler slag recycling device includes a pre-crushing mechanism comprising a crushing box, a housing mounted on the front of the crushing box, two crushing rollers mounted inside the crushing box, a gear mounted on one end of the outer ring of the roller shaft of the crushing rollers and located inside the housing, and a motor mounted on one end of the roller shaft of one of the crushing rollers and located inside the housing.

[0007] The aforementioned thermal power boiler slag recycling device includes a cover plate that is connected to the recycling box via a slot, a discharge sealing plate that is connected to the recycling box via a discharge trough, and a through groove with a diameter equal to the outer diameter of the end of the auger conveying pipe formed between the sealing pipe clamp and the sealing pipe groove. Beneficial effects

[0008] 1. This utility model, by setting up atomizing nozzles, supplies water from the water tank to the atomizing nozzles when the slag is fed into the hopper. The water vapor spray generated by the atomizing nozzles adheres to the slag and ash, causing the slag and ash to fall into the pre-crushing mechanism, thus preventing the slag and ash from spreading outward, causing environmental pollution, and affecting the health of the operators. After the slag enters the pre-crushing mechanism, the motor drives one of the crushing rollers to rotate, and in conjunction with two gears, drives two crushing rollers to crush the slag simultaneously, thereby reducing the voids after the slag accumulates and thus reducing the volume occupied by the slag accumulation.

[0009] 2. When the slag is conveyed to the recycling box of the recycling mechanism through the auger conveying pipe, the sealing pipe clamp and the sealing pipe groove seal the outer ring of the end of the auger conveying pipe. The opening of the recycling box is sealed by the cover plate to ensure that the slag does not come into direct contact with the outside after being crushed. The water vapor spray formed by the atomizing nozzle enhances the cohesion between the slag after crushing, and prevents the crushed slag from spreading to the outside. At the same time, the bottom of the recycling box is inclined to facilitate the discharge process after the discharge sealing plate is pulled out. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a structural breakdown diagram of the recycling facility; Figure 3 This is a top view of the internal structure of the pre-crushing mechanism; In the diagram: 1. Feed hopper; 2. Atomizing nozzle; 3. Water tank; 4. Pre-crushing mechanism; 5. Screw conveyor pipe; 6. Recycling mechanism; 7. Recycling box; 8. Slot; 9. Sealing pipe clamp; 10. Cover plate; 11. Sealing pipe groove; 12. Discharge chute; 13. Discharge sealing plate; 14. Crushing box; 15. Machine casing; 16. Crushing roller; 17. Gear; 18. Motor. Detailed Implementation

[0011] like Figure 1-3As shown, a slag recycling device for thermal power boilers includes a feeding hopper 1. Several atomizing nozzles 2 are installed in the middle of the inner ring of the feeding hopper 1. A water tank 3 is installed on one side of the feeding hopper 1. A pre-crushing mechanism 4 is installed at the bottom of the feeding hopper 1. An auger conveying pipe 5 is installed at the bottom of the pre-crushing mechanism 4. A recycling mechanism 6 is provided at the end of the auger conveying pipe 5. The recycling mechanism 6 includes a recycling box 7. Interconnected slots 8 are provided through the inner walls of both sides and the rear end of the recycling box 7 and near the top. A cover plate 10 is provided inside the slots 8. A sealing groove 11 is provided in the center of the rear end of the cover plate 10. The same discharge trough 12 is provided through the lower front end of both sides of the recycling box 7. A discharge sealing plate 13 is provided inside the discharge trough 12. To crush slag and reduce its volume after accumulation, a pre-crushing mechanism 4 is provided. The pre-crushing mechanism 4 includes a crushing box 14, a housing 15 is installed on the front of the crushing box 14, and two crushing rollers 16 are installed inside the crushing box 14. A gear 17 is installed at one end of the outer ring of the roller shaft of the crushing roller 16 and inside the housing 15. A motor 18 is installed at one end of the roller shaft of one of the crushing rollers 16 and inside the housing 15.

[0012] A slag recovery device for thermal power boilers comprises a hopper 1, a pre-crushing mechanism 4, and an auger conveying pipe 5 connected sequentially from top to bottom to streamline the slag feeding, crushing, and conveying process. To reduce slag and ash diffusion, cavities are formed inside the hopper wall of the hopper 1, corresponding to several atomizing nozzles 2. These cavities are connected to the interior of a water tank 3 via a water supply pipe. A water pump is installed inside the water tank 3 at the end of the water supply pipe. The atomizing nozzles 2 are arranged in a ring at equal intervals. For convenient sealed storage of the recovered slag, a cover plate 10 is engaged with the recovery box 7 via a slot 8, a discharge sealing plate 13 is engaged with the recovery box 7 via a discharge trough 12, and a through groove with a diameter equal to the outer diameter of the end of the auger conveying pipe 5 is formed between the sealing pipe clamp 9 and the sealing pipe groove 11. To facilitate the simultaneous crushing of two crushing rollers 16 by a single motor 18, the two gears 17 are meshed together. Bearings are installed at the connection between the roller shaft of the crushing roller 16 and the box body of the crushing box 14. The bottom surface of the inner side of the recycling box 7 is inclined towards the front.

[0013] In use, firstly, the water pump in the water tank 3 is started to supply water to the atomizing nozzle 2 in conjunction with the water supply pipe. As the slag passes through the hopper 1, the water vapor sprayed from the atomizing nozzle 2 adheres to the slag and ash, causing the slag and ash to fall into the pre-crushing mechanism 4. At the same time, the pre-crushing mechanism 4 crushes the slag. After that, the crushed slag, along with the slag and ash with attached water vapor, falls into the auger conveying pipe 5, and is then transported to the recycling box 7 of the recycling mechanism 6 via the auger conveying pipe 5. When retrieving the material, the discharge sealing plate 13 located in the discharge chute 12 is pulled out, and the slag stored in the recycling box 7 is discharged through the discharge chute 12.

Claims

1. A slag recovery device for thermal power boilers, comprising: The feeding hopper is characterized by the following features: a set of atomizing nozzles is installed in the middle of the inner ring of the feeding hopper; the feeding hopper is connected to a water tank and a pre-crushing mechanism; a screw conveyor pipe is installed at the bottom of the pre-crushing mechanism; a recycling mechanism is provided at the end of the screw conveyor pipe; the recycling mechanism includes a recycling box; slots are provided on the inner walls of the recycling box on both sides and the rear end; a cover plate is provided on the inner side of the slots; a sealing groove is provided in the center of the rear end of the cover plate; the same discharge trough is provided on both sides and the lower front end of the recycling box; a discharge sealing plate is provided inside the discharge trough; a cavity is provided inside the hopper wall corresponding to the position of the set of atomizing nozzles; the cavity is connected to the interior of the water tank through a water supply pipe.

2. The slag recovery device for thermal power boilers according to claim 1, characterized in that: The pre-crushing mechanism includes a crushing box, with a housing mounted on the front of the crushing box. Two crushing rollers are installed inside the crushing box. A gear is installed on one end of the outer ring of the roller shaft of the crushing roller and inside the housing. A motor is installed on one end of the roller shaft of one of the crushing rollers and inside the housing.

3. The slag recovery device for thermal power boilers according to claim 2, characterized in that: The cover plate of the recycling bin is connected to the recycling bin via a slot, the discharge sealing plate is connected to the recycling bin via a discharge groove, and a through groove with a diameter equal to the outer diameter of the end of the auger conveying pipe is formed between the sealing pipe clamp and the sealing pipe groove.

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