Thermal power plant boiler slag conveying mechanism

Abstract

The utility model provides a boiler slag conveying mechanism for a thermal power plant. The boiler slag conveying mechanism comprises a coal slag storage tank, a conveying device is arranged at a discharge port below the coal slag storage tank, a rotating conveying belt is arranged in the conveying device, an air blower is arranged at one end of the conveying device, a filtering device is arranged at the top of the other end, and a crushing box is arranged at the bottom. Dust suppressant inlet pipes are arranged between the coal slag storage tank and the conveying device and between the conveying device and the crushing box, and the dust suppressant inlet pipes are communicated with a spray head in the conveying device and used for spraying a dust suppressant to the slag. The dust suppressant spraying system effectively suppresses generation and diffusion of dust, and the closed conveying system is matched with the efficient filtering device, so that dust in exhausted gas is effectively captured and filtered out. And due to the application of the cooling coil, the risk of high-temperature operation is reduced, and the safety of the working environment is improved.

Description

Technical Field

[0001] The utility model relates to the field of slag transportation, and particularly relates to a slag transportation mechanism for a thermal power plant boiler. Background Art

[0002] During the transportation, cooling and crushing of the slag after the combustion of the thermal power plant boiler, a large amount of high-temperature dust will be generated. These fine dust particles not only pose a threat to the health of on-site workers, but also drift with the wind, causing serious pollution to the surrounding environment. The presence of high temperature and dust exacerbates the wear of the transportation equipment, especially key components such as conveyor belts and crushers. Frequent maintenance and replacement not only increase the operating cost, but also affect the continuity and efficiency of production. Content of the Utility Model

[0003] The main purpose of the utility model is to provide a slag transportation mechanism for a thermal power plant boiler to solve the problems in the above background art.

[0004] To solve the above technical problems, the technical solution adopted by the utility model is: it includes a cinder storage tank. A conveying device is provided at the discharge port below the cinder storage tank. A rotating conveyor belt is arranged inside the conveying device. A blower is provided at one end of the conveying device, and a filtering device is provided at the top of the other end, and a crushing box is provided at the bottom;

[0005] Dust suppressant inlet pipes are respectively arranged between the cinder storage tank and the conveying device and between the conveying device and the crushing box. The dust suppressant inlet pipes are communicated with the nozzles inside the conveying device for spraying dust suppressant on the slag.

[0006] Preferably, the conical discharge port below the cinder storage tank is communicated with the feed port of the conveying device through a flap valve, and the dust suppressant inlet pipes are arranged on both sides of the feed port.

[0007] Preferably, an air inlet is provided at one end of the conveying device, an air outlet is provided at the top of the other end, a blanking port is provided at the bottom. The blower is communicated with the air inlet, the filtering device is fixed on the air outlet, and the top of the crushing box is connected with the blanking port.

[0008] Preferably, the conveyor belt is connected to the conveying device through multiple rollers. A first motor is provided at the end of the rotating shaft and is connected thereto. The first motor is fixed outside the conveying device.

[0009] Preferably, cooling coils are arranged inside the conveyor belt. One end of the cooling coil is provided with a water inlet pipe, and the other end is provided with a water return pipe. The water inlet pipe and the water return pipe are communicated with a circulation water tank.

[0010] Preferably, a rotating cleaning roller is provided at the bottom of one end of the conveyor belt. Both ends of the cleaning roller are rotatably abutted against the conveying device through bearings, and the cleaning roller abuts against the conveyor belt;

[0011] A second motor is provided at the end of the cleaning roller and is connected thereto. The second motor is fixed outside the conveying device.

[0012] Preferably, two crushing rollers that rotate relative to each other are provided in the crushing box. The dust suppressant inlet pipe is provided above the inlet of the crushing box, and the nozzle is directed at the space between the two crushing rollers.

[0013] Preferably, the two ends of the two crushing rollers are abutted against the crushing box through bearings and rotate. The ends of the two crushing rollers are driven by gear meshing;

[0014] A third motor is provided at the end of one of the crushing rollers and is connected thereto. The third motor is fixed outside the crushing box.

[0015] The present utility model provides a conveying mechanism for boiler slag in a thermal power plant, and the beneficial effects are as follows:

[0016] 1. The integrated dust suppressant spraying system effectively inhibits the generation and diffusion of dust, significantly reduces the dust concentration in the air, reduces environmental pollution, and meets strict environmental protection standards. The closed conveying system is equipped with an efficient filtering device, which effectively captures and filters the dust in the exhaust gas, ensures clean emissions, and protects the surrounding ecological environment.

[0017] 2. Reducing dust not only protects the atmospheric environment, but also significantly improves the air quality in the operation area, reduces the risk of occupational diseases, and protects the physical health of employees. The application of the temperature control measure of the cooling coil reduces the risk of high-temperature operations and improves the safety of the working environment.

[0018] 3. By using the cleaning roller, the maintenance requirements and downtime of the conveyor belt are reduced, ensuring the continuous and stable operation of the conveying system. The precise crushing technology and transmission design improve the efficiency and quality of slag crushing, accelerate the material handling process, and improve the overall operation efficiency.

[0019] 4. Reducing equipment wear and maintenance frequency means lower repair and replacement costs, as well as a longer service life of the equipment. After the slag is effectively processed, it is more suitable for subsequent recycling and reuse, such as as a building material raw material, etc., promoting the circular economy of resources. Description of the Drawings

[0020] The following further describes the present utility model in conjunction with the drawings and embodiments:

[0021] Figure 1 is the front view of the overall structure of the present utility model;

[0022] Figure 2 is the front sectional view of the overall structure of the present utility model;

[0023] In the figure: cinder storage tank 1; slide valve 2; conveying device 3; feed inlet 301; air inlet 302; air outlet 303; blanking outlet 304; blower 4; filtering device 5; first motor 6; second motor 7; third motor 8; crushing box 9; water inlet pipe 10; water return pipe 11; dust suppressant inlet pipe 12; conveyor belt 13; cooling coil 14; cleaning roller 15; crushing roller 16. Detailed implementation mode

[0024] As Figures 1 - 2 shown, a conveying mechanism for boiler slag in a thermal power plant includes a cinder storage tank 1. A conveying device 3 is provided at the discharge port below the cinder storage tank 1. A rotating conveyor belt 13 is arranged inside the conveying device 3. A blower 4 is provided at one end of the conveying device 3, and a filtering device 5 is provided at the top of the other end, and a crushing box 9 is provided at the bottom.

[0025] Dust suppressant inlet pipes 12 are respectively arranged between the cinder storage tank 1 and the conveying device 3 and between the conveying device 3 and the crushing box 9. The dust suppressant inlet pipe 12 is communicated with a spray head inside the conveying device 3 for spraying dust suppressant on the slag. The cinder in the cinder storage tank 1 enters the conveying device 3 from the discharge port below and falls on the conveyor belt 13 and moves into the crushing box 9 for crushing. At the same time, the blower 4 is used to accelerate the air flow inside the conveying device 3, and the hot air is discharged through the filtering device 5 to avoid dust overflow. A spray head is arranged at the cinder feeding place, and spraying dust suppressant on the cinder can avoid the generation of dust.

[0026] The cinder storage tank 1 is used to store the hot cinder discharged from the boiler. The design of the storage tank needs to consider the high-temperature characteristics of the cinder to ensure safe storage.

[0027] The cinder falls from the discharge port of the storage tank 1 into the conveying device 3. The key component here is the rotating conveyor belt 13. The conveyor belt needs to be designed to be high-temperature resistant and wear-resistant to adapt to the physical characteristics of the cinder and ensure continuous and stable conveyance of the cinder to the next process.

[0028] The blower installed at one end of the conveying device mainly functions to increase the air flow speed inside the conveying device, which helps to cool down and promote air circulation, and reduce the dust-raising problem caused by high temperature inside. This not only improves the working environment but also helps to protect subsequent equipment from high-temperature damage.

[0029] The filtering device located at the top of the other end of the conveying device is mainly used to capture fine dust particles flowing with the air and prevent them from being discharged into the atmosphere, meeting the requirements of environmental protection. This usually adopts an efficient bag filter or other types of air purification technologies.

[0030] Located at the end of the conveying process, the cinder is further crushed here for subsequent transportation or reuse.

[0031] The dust suppressant is connected to the spray head inside the conveying device 3 through the dust suppressant inlet pipe 12, and sprays the slag during the conveying process, which can effectively inhibit the dust from flying.

[0032] Preferably, the lower conical discharge port of the coal slag storage tank 1 is communicated with the feed port 301 of the conveying device 3 through the slide valve 2, and the dust suppressant inlet pipes 12 are arranged on both sides of the feed port 301. Opening the slide valve 2 enables the coal slag in the coal slag storage tank 1 to fall from the feed port 301 onto the conveyor belt 13, and the dust suppressant is introduced through the dust suppressant inlet pipes 12 on both sides of the feed port 301 and sprayed out from the spray head, avoiding the generation of dust.

[0033] The cone of the coal slag storage tank 1 helps the material to slide smoothly, and the slide valve 2, as a controllable switching device, can effectively control the timing and flow rate of the coal slag flowing into the conveying device 3.

[0034] The dust suppressant inlet pipes 12 are arranged on both sides of the feed port. Such a layout is conducive to the dust suppressant covering the falling coal slag evenly, minimizing the generation of dust at the dust generation points. The dust suppressant is introduced through the dust suppressant inlet pipes 12 on both sides of the feed port 301 and sprayed precisely onto the surface of the coal slag from the spray head.

[0035] Preferably, one end of the conveying device 3 is provided with an air inlet 302, the other end is provided with an air outlet 303 at the top, and a discharge port 304 is provided at the bottom. The blower 4 is communicated with the air inlet 302, the filtering device 5 is fixed on the air outlet 303, and the top of the crushing box 9 is connected to the discharge port 304. The blower 4 can accelerate the air circulation inside the conveying device 3, and the hot air is discharged from the filtering device 5, filtering the dust to avoid pollution.

[0036] The blower 4 sends air into the conveying device through the air inlet 302, increasing the internal air flow velocity. The air outlet 303 provided at the top of the other end of the conveying device 3 is connected to the filtering device 5. As the blower promotes the air circulation, the hot air carrying the coal slag dust will be extracted and pass through the filtering device. The filtering device is responsible for capturing the dust particles in the air, purifying the discharged gas, preventing environmental pollution, and ensuring compliance with environmental protection standards.

[0037] The discharge port 304 at the bottom of the conveying device 3 is directly connected to the top inlet of the crushing box 9, and the coal slag will fall into the crushing box through the discharge port for further processing, such as crushing and screening, for subsequent utilization or storage.

[0038] Preferably, the conveyor belt 13 is connected to the conveying device 3 through a plurality of rollers, and the end of the rotating shaft is provided with a first motor 6 connected thereto. The first motor 6 is fixed outside the conveying device 3. The first motor 6 is used to drive the rollers to rotate, thereby driving the movement of the conveyor belt 13.

[0039] Preferably, a cooling coil 14 is provided inside the conveyor belt 13. One end of the cooling coil 14 is provided with a water inlet pipe 10, and the other end is provided with a water return pipe 11. The water inlet pipe 10 and the water return pipe 11 are communicated with the circulation water tank.

[0040] Since the slag falling from the cinder storage tank 1 has a relatively high temperature, if not cooled, it may damage the conveyor belt material, increase the fire risk, or overheat the surrounding environment. The cooling coil is built into the conveyor belt, which can effectively absorb and carry away the heat transferred from the slag to the conveyor belt, maintain a suitable working temperature, extend the equipment life and ensure the operation safety.

[0041] The water inlet pipe 10 introduces cooling water from the circulation water tank into the cooling coil 14. The cold water circulates inside the coil, absorbs heat and becomes warm water, and then returns to the circulation water tank via the water return pipe 11. In the water tank, the warm water can be cooled again through natural cooling or with the help of external cooling equipment, and then pumped back into the cooling coil to form a closed circulating cooling system. Such a design is both energy-saving and efficient, ensuring continuous cooling effect.

[0042] Preferably, a rotating cleaning roller 15 is provided at the bottom of one end of the conveyor belt 13. Both ends of the cleaning roller 15 are rotatably abutted against the conveying device 3 through bearings, and the cleaning roller 15 abuts against the conveyor belt 13;

[0043] A second motor 7 is provided at the end of the cleaning roller 15 and is connected thereto. The second motor 7 is fixed outside the conveying device 3. The second motor 7 drives the cleaning roller 15 to abut against the conveyor belt 13, thereby cleaning it and preventing cinder from adhering to the conveyor belt 13.

[0044] The cleaning roller is installed at the bottom of one end of the conveyor belt 13, supported by bearings and allowed to rotate freely. Its position is designed such that the cleaning roller contacts the conveyor belt surface closely but without damage, physically scraping or brushing off the cinder residues, dust and other impurities adhering to the conveyor belt. This not only keeps the conveyor belt clean, reduces the wear of the conveyor belt, but also helps to avoid problems such as conveyor belt deviation or blockage caused by material accumulation.

[0045] Preferably, two relatively rotating crushing rollers 16 are provided inside the crushing box 9. The dust suppressant inlet pipe 12 is provided above the inlet of the crushing box 9, and the nozzle is facing the space between the two crushing rollers 16.

[0046] The two relatively rotating crushing rollers 16 configured inside the crushing box 9 are used to crush the slag. When the slag falls from the discharge opening 304 of the conveying device 3 into the crushing box, it will be effectively crushed into smaller particles or powders through the extrusion and shearing actions between the two crushing rollers. This design can greatly improve the crushing efficiency and is also convenient for subsequent processing or transportation.

[0047] The arrangement of the dust suppressant inlet pipe 12 above the inlet of the crushing box 9, and the spray head facing the space between the two crushing rollers 16, ensure that the dust suppressant can directly act on the slag crushing process, which is the most likely link to generate a large amount of dust. The precise positioning of the spray head helps to minimize the amount of dust generated during the crushing process, effectively control the air quality of the working environment, protect the health of the operators, and reduce the pollution to the external environment.

[0048] Preferably, both ends of the two crushing rollers 16 are rotatably abutted against the crushing box 9 through bearings, and the ends of the two crushing rollers 16 are driven by gear meshing;

[0049] One end of one of the crushing rollers 16 is provided with a third motor 8 connected thereto, and the third motor 8 is fixed outside the crushing box 9.

[0050] The two crushing rollers 16 are installed inside the crushing box 9 through bearings at both ends to ensure their smooth rotation. The two crushing rollers are meshed with each other through the gears at the ends, forming a closed transmission chain. This means that when one of the crushing rollers is driven to rotate by the motor, the other crushing roller will rotate in the same direction through the meshing force of the gears, ensuring the synchronous operation between the two rollers, and improving the crushing efficiency and stability.

[0051] A third motor 8 is connected to one end of one of the crushing rollers, and this motor is fixed outside the crushing box. The introduction of the third motor as a power source directly drives the rotation of the crushing roller connected thereto, and then makes the other crushing roller work synchronously through gear transmission. This design simplifies the transmission structure, improves the reliability and maintenance convenience of the system, and at the same time facilitates the individual control and power adjustment of the motor to meet the crushing requirements under different working conditions.

[0052] The above embodiments are only the preferred technical solutions of the present invention and should not be regarded as limitations on the present invention. The protection scope of the present invention should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, the equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A slag conveying mechanism for a thermal power plant boiler, characterized by: The invention comprises a coal slag storage tank (1), wherein a conveying device (3) is provided at a discharge port below the coal slag storage tank (1), a rotating conveying belt (13) is provided inside the conveying device (3), a blower (4) is provided at one end of the conveying device (3), a filtering device (5) is provided at the top of the other end, and a crushing box (9) is provided at the bottom; A dust suppressant inlet pipe (12) is provided between the slag storage tank (1) and the conveying device (3) and between the conveying device (3) and the crushing box (9). The dust suppressant inlet pipe (12) is connected to a nozzle inside the conveying device (3) for spraying the dust suppressant on the slag.

2. A thermal power plant boiler slag conveying mechanism according to claim 1, characterized in that: The conical discharge port at the bottom of the coal ash storage tank (1) is connected to the feed port (301) of the conveying device (3) through a gate valve (2), and dust suppressant inlet pipes (12) are arranged on both sides of the feed port (301).

3. The slag conveying mechanism for a thermal power plant boiler according to claim 1 is characterized by: The conveying device (3) is provided with an air inlet (302) at one end, an air outlet (303) at the top of the other end, and a material discharge port (304) at the bottom. The blower (4) is connected to the air inlet (302), the filter device (5) is fixed on the air outlet (303), and the top of the crushing box (9) is connected to the material discharge port (304).

4. The slag conveying mechanism for a thermal power plant boiler according to claim 1, characterized in that: The conveyor belt (13) is connected to the conveying device (3) via a plurality of rollers, and a first motor (6) connected thereto is provided at the end of the rotating shaft, and the first motor (6) is fixed outside the conveying device (3).

5. The slag conveying mechanism for a thermal power plant boiler according to claim 1 is characterized by: A cooling coil (14) is provided inside the conveyor belt (13); a water inlet pipe (10) is provided at one end of the cooling coil (14) and a water return pipe (11) is provided at the other end; the water inlet pipe (10) and the water return pipe (11) are connected to a circulating water tank.

6. The slag conveying mechanism for a thermal power plant boiler according to claim 1, characterized in that: A rotatable cleaning roller (15) is provided at the bottom of one end of the conveyor belt (13); both ends of the cleaning roller (15) are supported on the conveying device (3) through bearings for rotation, and the cleaning roller (15) is supported on the conveyor belt (13); A second motor (7) connected to the end of the cleaning roller (15) is provided, and the second motor (7) is fixed outside the conveying device (3).

7. The slag conveying mechanism for a thermal power plant boiler according to claim 1, characterized in that: Two crushing rollers (16) that rotate relative to each other are arranged in the crushing box (9), and a dust suppressant inlet pipe (12) is arranged above the inlet of the crushing box (9), with a nozzle facing directly between the two crushing rollers (16).

8. The slag conveying mechanism for a thermal power plant boiler according to claim 7, characterized in that: The two ends of the two crushing rollers (16) are supported on the crushing box (9) through bearings for rotation, and the ends of the two crushing rollers (16) are driven by gear meshing; A third motor (8) connected to one of the crushing rollers (16) is provided at the end thereof, and the third motor (8) is fixed outside the crushing box (9).

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