Mine shaft anti-freezing device based on mine return air waste heat recovery

Abstract

The application discloses a kind of based on mine return air waste heat recovery's shaft anti-freezing device, including mine ventilator, diffusion tower is equipped at the right side of mine ventilator, return air pipe is equipped on diffusion tower, heat absorption device for absorbing heat is installed in return air pipe, the spray water collecting tank for collecting water is equipped at the bottom of heat absorption device, air inlet pipe is equipped at the top of return air pipe, wellhead room is equipped at the right side of air inlet pipe, air inlet well is equipped in wellhead room, heat exchange heater is equipped in wellhead room, and heat exchange heater is communicated with spray water collecting tank.This application has the beneficial effects that: it can improve heat exchange efficiency, and save energy.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of return air waste heat recovery, and particularly relates to a mine shaft anti-freezing device based on mine return air waste heat recovery. BACKGROUND

[0002] When working in a mine, in order to ensure the temperature in the mine, the air in the mine is generally heated, in order to save energy, the return air of the mine is generally subjected to waste heat recovery for reheating fresh air, there are various principles for common waste heat recovery devices, among which the spray type heat extraction is to use water to absorb waste heat, and then reheat fresh air, the traditional spray type device mostly uses multiple spray heads to spray a large amount of water to absorb heat, but there are many problems in actual use, firstly, a large amount of water needs to be transported and a large amount of water needs to be sprayed, which requires a lot of energy, secondly, after the water is sprayed, a large amount of noise is generated due to the collision of the water with the pipe wall, and the traditional spray device has low heat absorption efficiency, which wastes a lot of heat, and the water sprayed together with the dust in the return air causes certain pollution, the water sprayed also has a certain resistance effect on the return air, so that an additional fan needs to be added to generate thrust to ensure the air flow in the pipeline, for this reason, people have been looking for a solution. SUMMARY

[0003] The application provides a mine shaft anti-freezing device based on mine return air waste heat recovery, which can improve heat exchange efficiency and save energy.

[0004] In order to solve the above technical problems, the application adopts the following technical scheme:

[0005] A mine shaft anti-freezing device based on mine return air waste heat recovery, comprising a mine ventilator, a diffusion tower is arranged on the right side of the mine ventilator, a return air pipe is arranged on the diffusion tower, a heat absorption device for absorbing heat is arranged in the return air pipe, a spray water collecting pool for collecting water is arranged at the bottom of the heat absorption device, an air inlet pipe is arranged at the top of the return air pipe, a shaft house is arranged on the right side of the air inlet pipe, an air inlet shaft is arranged in the shaft house, a heat exchange heater is arranged in the shaft house, and the heat exchange heater is in communication with the spray water collecting pool.

[0006] Further, a spray device is arranged at the top of the heat absorption device, and the spray device is in communication with the heat exchange heater.

[0007] Further, the heat absorption device comprises a plurality of heat collecting pipes, the heat collecting pipes are hollow cylindrical structures, the plurality of heat collecting pipes are arranged in gaps, the plurality of heat collecting pipes are arranged in an inclined manner, the windward direction is the low end, the leeward direction is the high end, the plurality of heat collecting pipes are fixedly connected with the return air pipe through a support frame, the spray water collecting pool is arranged at the low end of the bottom of the heat collecting pipe, and the spray device is arranged at the high end of the top of the heat collecting pipe.

[0008] Further, the heat collecting pipe comprises a steel pipe, a dust absorption layer is arranged outside the steel pipe, a heat absorption coating is arranged inside the steel pipe, and a water flow pipe is arranged at the bottom of the steel pipe, wherein the water flow pipe is a cylindrical pipe material, and the heat absorption coating, the steel pipe, the dust absorption layer and the water flow pipe are all provided with water flow through holes in the vertical direction.

[0009] Further, the inclination angle of the plurality of heat collecting pipes is matched with the diameter of the return air pipe.

[0010] Compared with the prior art, the present application has the following beneficial effects:

[0011] In the present application, the heat absorption device is arranged in a hollow long pipe type, the hot air is in contact with the outer wall and the inner wall of the heat collecting pipe for a long distance, and then heat exchange is carried out, so that the heat exchange time is as long as possible, and the heat absorption efficiency is higher; the dust absorption layer and the heat absorption coating are arranged, the heat absorption coating is used to absorb the heat in the hot air, and the dust absorption layer is used to absorb the dust in the air, and the heat absorption coating also has a heat absorption and heat preservation effect, so that the heat in the air can be absorbed to the maximum extent; the heat collecting pipe is arranged in an inclined manner, so that the flowing water can cover the surface of the heat collecting pipe by gravity, and then fall into the inside of the heat collecting pipe through the holes on the heat collecting pipe, and flow to the low end in the inside, so that the water and the heat collecting pipe are in contact for a long time during the flowing process, and the heat of the heat collecting pipe can be fully absorbed; and the inclination of the heat collecting pipe changes the direction of the wind to upward, guides the wind direction, and enables the wind of the return air pipe to enter the air inlet pipe with smaller resistance, thereby increasing the heat exchange efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the present application;

[0013] Figure 2 It is a structural schematic diagram of the heat absorption device;

[0014] Figure 3 It is a sectional view of the heat collecting pipe.

[0015] In the drawings: 1. mine ventilator, 2. diffusion tower, 3. return air pipe, 4. air inlet pipe, 5. shaft house, 6. air inlet shaft, 7. heat absorption device, 8. spraying device, 9. heat collecting pipe, 10. support frame, 11. spraying water collecting pool, 12. water conveying pipe, 13. heat exchange heater, 14. dust absorption layer, 15. steel pipe, 16. heat absorption coating, 17. water flow pipe. DETAILED DESCRIPTION

[0016] Embodiment: as Figure 1 , Figure 2 , Figure 3As shown, including mine fan 1, mine fan 1 right side is equipped with diffusion tower 2, diffusion tower 2 is equipped with return air pipe 3, return air pipe 3 inside is mounted with heat absorption device 7 for absorbing heat, heat absorption device 7 bottom is equipped with spray water collecting tank 11 for collecting water, return air pipe 3 top is equipped with air inlet pipe 4, air inlet pipe 4 right side is equipped with shaft house 5, shaft house 5 is equipped with air inlet shaft 6, shaft house 5 is equipped with heat exchange heater 13, heat exchange heater 13 is communicated with spray water collecting tank 11. Heat absorption device 7 top is equipped with spray device 8, spray device 8 and heat exchange heater 13 are communicated with each other, heat absorption device 7 includes multiple heat collecting pipes 9, heat collecting pipe 9 is hollow cylindrical structure, multiple heat collecting pipes 9 are arranged with gaps, multiple heat collecting pipes 9 are arranged obliquely, the direction of windward is low end, the direction of leeward is high end, multiple heat collecting pipes 9 are fixedly connected with return air pipe 3 through support frame 10, heat collecting pipe 9 low end bottom position is equipped with spray water collecting tank 11, heat collecting pipe 9 high end top position is equipped with spray device 8, heat collecting pipe 9 includes steel pipe 15, steel pipe 15 outside is equipped with dust absorption layer 14, steel pipe 15 inside is equipped with heat absorption coating 16, steel pipe 15 bottom is equipped with water flow pipe 17, water flow pipe 17 is cylindrical pipe material, heat absorption coating 16, steel pipe 15, dust absorption layer 14 and water flow pipe 17 are all provided with water flow through holes in vertical direction, the inclination angle of multiple heat collecting pipes 9 is adapted to the diameter of return air pipe 3.

[0017] Working process: hot air recovered from the mine, through return air pipe 3 blows to heat collecting pipe 9, hot air enters from heat collecting pipe 9 low end, then blows out from heat collecting pipe 9 high end, hot air and the outer wall and inner wall of heat collecting pipe 9 produce long distance contact, then heat exchange, heat absorption coating 16 is used to absorb the heat in hot air, dust absorption layer 14 is used to absorb dust in air, at the same time, heat absorption coating 16 absorbs heat and has heat preservation effect, so that the heat in air can be absorbed to the greatest extent; at this time, spray device 8 sprays a small amount of water, water falls on heat collecting pipe 9 high end, flows to low end through weight, at the same time, through the hole on heat collecting pipe 9, falls into heat collecting pipe 9 inside, flows to low end inside, in the whole flow process, water and heat collecting pipe 9 produce long time contact, can fully absorb the heat of heat collecting pipe 9, water absorbing heat will flow into water flow pipe 17, because of the oblique arrangement of heat collecting pipe 9, the entrance is blocked by heat collecting pipe 9, so the air volume entering is less, dust is less, relatively cleaner, compared with the same type of spray device, the contact area and contact time of water and dust are smaller, water quality is cleaner, the liquid flowing out of upper heat collecting pipe 9 falls on lower heat collecting pipe 9, continues to absorb heat, finally, water absorbing enough heat is collected into spray water collecting tank 11, the water of spray water collecting tank 11 finally enters heat exchange heater 13 for heating fresh air.

Claims

1. A mine shaft anti-freezing device based on mine return air waste heat recovery, characterized in that: The utility model relates to a mine ventilation fan (1), the right side of mine ventilation fan (1) is equipped with diffusion tower (2), diffusion tower (2) is equipped with return air pipe (3), return air pipe (3) is installed with heat absorption device (7) for absorbing heat in the inside, heat absorption device (7) bottom is equipped with the spray water collecting tank (11) for collecting water, return air pipe (3) top is equipped with air inlet pipe (4), air inlet pipe (4) right side is equipped with the shaft station (5), the shaft station (5) is equipped with air inlet shaft (6) in, the shaft station (5) is equipped with heat exchange heater (13) in, heat exchange heater (13) is linked with spray water collecting tank (11) intercommunication, heat absorption device (7) includes a plurality of heat collecting pipes (9), heat collecting pipe (9) is hollow cylindrical structure, a plurality of heat collecting pipes (9) gap setting, a plurality of heat collecting pipes (9) are arranged obliquely, the direction of windward is low end, and the direction of leeward is high end, heat collecting pipe (9) includes steel pipe (15), steel pipe (15) outside is equipped with dust absorption layer (14), steel pipe (15) inside is equipped with heat absorption coating (16), steel pipe (15) bottom is equipped with water flow pipe (17), water flow pipe (17) is cylindrical pipe material, heat absorption coating (16), steel pipe (15), dust absorption layer (14) and water flow pipe (17) are all equipped with water flow through -hole in vertical direction.

2. The mine shaft anti-freezing device based on mine return air waste heat recovery according to claim 1, characterized in that: Heat absorption device (7) top is equipped with spray device (8), and spray device (8) and heat exchange heater (13) intercommunication.

3. The mine shaft anti-freezing device based on mine return air waste heat recovery according to claim 1, characterized in that: A plurality of heat collecting pipes (9) are fixedly connected with return air pipe (3) through support frame (10), heat collecting pipe (9) low end bottom position is equipped with spray water collecting tank (11), and heat collecting pipe (9) high end top position is equipped with spray device (8).

4. The mine shaft anti-freezing device based on mine return air waste heat recovery according to claim 1, characterized in that: The inclination angle of a plurality of heat collecting pipes (9) is adapted to the diameter of return air pipe (3).

5. The mine shaft anti-freezing device based on mine return air waste heat recovery according to claim 1, characterized in that: The position of heat exchange heater (13) corresponds to the position of air inlet pipe (4) outlet.

6. The mine shaft anti-freezing device based on mine return air waste heat recovery according to claim 1, characterized in that: Air inlet pipe (4) left end is connected with external connection intercommunication.

Images