Mine air compressor heat energy recycling device

Abstract

The utility model relates to the technical field of mining machinery, in particular to a mine air compressor heat energy recycling device which comprises an air compressor, a heat exchange mechanism, a water storage tank, a first water pump, a second water pump and an industrial water container, the air compressor is provided with an air outlet pipe, and the air outlet pipe is connected with the heat exchange mechanism and blows hot air into the heat exchange mechanism for heat exchange. The heat exchange mechanism is connected with the water storage tank through a first water pump, the water storage tank is connected with the industrial water container through a second water pump, a hot air disperser is arranged in the heat exchange mechanism, a plurality of exhaust pipes are arranged at two ends of the heat exchange mechanism, the exhaust pipes are provided with heat energy recycling mechanisms, and the heat energy recycling mechanisms are also connected with the water storage tank through the first water pump. Most of heat energy of hot air output by the air outlet pipe of the air compressor can be recovered through the first heat exchange pipe, heat energy of air output by the exhaust pipe can be further recovered again through the second heat exchange pipe, and therefore the heat energy recovery efficiency of the mine air compressor can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of mining machinery technology, specifically to a device for recovering and reusing heat energy from a mining air compressor. Background Technology

[0002] The main purpose of a mining air compressor is to generate compressed air. In mining, coal mining, oil and gas extraction, it is also used in various applications such as crushing, drilling, and air supply. It is usually composed of a compressor, motor, high-pressure air tank, dryer, and filter. It is widely used in mines, construction sites, and other places. Mining air compressors have advantages such as lifting, transportation, low land rent, and easy maintenance, making them an indispensable piece of equipment in modern mining, metallurgy, and construction industries.

[0003] Mining air compressors generate a large amount of hot air during operation, primarily due to the heating of the air during compression. If this hot air is not effectively utilized, it not only wastes energy but is also directly released into the atmosphere, leading to further energy waste. Allowing the generated hot air to generate heat without waste heat recovery results in significant energy waste and increases operating costs for the enterprise. To achieve heat recovery, some patent documents on air compressor heat recovery have appeared in patent databases, most of which focus on recovering heat from the outer wall of the air outlet duct (e.g., CN220599963U). However, most of the heat from the air compressor is discharged through the hot air blown out of the outlet duct, so recovering heat only from the outer wall of the outlet duct is clearly insufficient. Therefore, it is necessary to conduct more in-depth research on heat recovery and utilization in mining air compressors. Summary of the Invention

[0004] In order to solve the existing technical problems described in the background art, the present invention discloses a device for recovering and reusing heat energy from a mining air compressor.

[0005] To achieve the above objectives, the technical solution of this invention is as follows:

[0006] A heat energy recovery and reuse device for a mining air compressor includes an air compressor, a heat exchange mechanism, a water storage tank, a first water pump, a second water pump, and an industrial water container. The air compressor is equipped with an air outlet pipe connected to the heat exchange mechanism, which blows hot air into the heat exchange mechanism for heat exchange. The heat exchange mechanism is connected to the water storage tank via the first water pump, and the water storage tank is connected to the industrial water container via the second water pump. The heat exchange mechanism is equipped with a hot air disperser, and several exhaust pipes are provided at both ends of the heat exchange mechanism. The exhaust pipes are equipped with a heat energy recovery mechanism, which is also connected to the water storage tank via the first water pump.

[0007] Preferably, the heat exchange mechanism includes a cylindrical insulated shell, with the end of the air outlet pipe penetrating through the insulated shell and communicating with the interior of the insulated shell. The inner wall of the insulated shell is provided with a heat exchange tube coiled in a "bow" shape around the axis. One end of the heat exchange tube penetrates through the outer wall of the insulated shell and is connected to the outlet of the first water pump through a first pipe. The inlet of the first water pump is connected to a water storage tank through a second pipe. The other end of the heat exchange tube penetrates through the outer wall of the insulated shell and is connected to the interior of the water storage tank through a third pipe.

[0008] Preferably, the hot air disperser includes a motor, a main shaft, and dispersing blades. The main shaft is rotatably connected to the axis of the insulation shell. One end of the main shaft passes through the insulation shell and is fixedly connected to the output shaft end of the motor, which is fixedly installed on the outer wall of the insulation shell. Several dispersing blades are evenly distributed around the axis of the main shaft. The dispersing blades are used in conjunction with the air outlet pipe entering the insulation shell to guide the hot air to the heat exchange tubes distributed on the side wall of the insulation shell.

[0009] Preferably, the bottom of the heat-insulating shell is fixedly connected to a base, the surface of the dispersing blade is provided with a heat-insulating material layer, and the cross-section of the dispersing blade is a U-shaped structure.

[0010] Preferably, the front and rear walls of the heat-insulating shell are evenly distributed with multiple air outlets around the axis, and the outer ports of the air outlets are connected to exhaust pipes, which are made of thermally conductive metal materials.

[0011] Preferably, the heat energy recovery mechanism includes a spiral heat exchange tube II wound around the outer wall of the exhaust pipe, one end of which is connected to the first pipe and the other end of which is connected to the third pipe.

[0012] Preferably, the second pipe is provided with a branch pipe, the branch pipe is connected to a cold water source, and both the second pipe and the branch pipe are provided with a first solenoid valve and a second solenoid valve.

[0013] Preferably, the air outlet pipe is fitted with an insulation pipe, the outer wall of the air outlet pipe is equipped with a first temperature sensor, the upper part of the inner wall of the water storage tank is equipped with a first liquid level sensor and a second liquid level sensor from top to bottom, the outer wall of the water storage tank between the first liquid level sensor and the second liquid level sensor is connected to a water outlet pipe, the water outlet pipe is connected to the water inlet of the second water pump, and the water outlet of the second water pump is connected to an industrial water container for mining through a fourth pipe.

[0014] Preferably, the device also includes a controller, which is electrically connected to a power source and electrically connected to a motor, a first solenoid valve, a second solenoid valve, a first water pump, a second water pump, a first liquid level sensor, and a second liquid level sensor via wires.

[0015] The beneficial effects of this novel heat recovery and reuse device for mining air compressors are as follows:

[0016] This new type of air compressor can recover most of the heat energy of the hot air output from the air compressor outlet pipe through heat exchange tube one, and can further recover the heat energy of the air output from the exhaust pipe through heat exchange tube two, thereby effectively improving the heat energy recovery efficiency of the air compressor in the mine. Attached Figure Description

[0017] Figure 1 : A schematic cross-sectional view of the present invention;

[0018] Figure 2 : A front view schematic diagram of the structure of this novel invention;

[0019] Figure 3 Distribution diagram of the first type of heat exchanger tube;

[0020] Figure 4 Cross-sectional view of the novel dispersion blade;

[0021] Figure 5 : Schematic diagram of the heat exchange tubes on both sides of the new type of heat-insulating shell.

[0022] 1: Air compressor; 11: Air outlet pipe; 12: Insulation pipe; 2: Heat exchange mechanism; 21: Base; 22: Insulation shell; 23: Heat exchange tube one; 24: First pipeline; 25: First water pump; 26: Air outlet; 27: Dispersion blades; 28: Main shaft; 29: Motor; 3: Water storage tank; 31: First liquid level sensor; 32: Second liquid level sensor; 33: Second temperature sensor; 4: Second water pump; 5: Fourth pipeline; 6: Third pipeline; 7: Branch pipeline; 8: Second pipeline; 9: Exhaust pipe; 10: Heat exchange tube two; 101: One end of heat exchange tube two; 102: The other end of heat exchange tube two. Detailed Implementation

[0023] The following description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0024] A device for recovering and reusing heat energy from a mining air compressor, such as Figure 1-5As shown, the system includes an air compressor 1, a heat exchange mechanism 22, a water storage tank 33, a first water pump 25, a second water pump 4, and an industrial water container (not shown in the figure). The air compressor 1 is equipped with an air outlet pipe 11, which is connected to the heat exchange mechanism 2 and blows hot air into the heat exchange mechanism 2 for heat exchange. The heat exchange mechanism 2 is connected to the water storage tank 3 through the first water pump 25, and the water storage tank 3 is connected to the industrial water container through the second water pump 4. The heat exchange mechanism 2 is equipped with a hot air diffuser, and several exhaust pipes 9 are provided at both ends of the heat exchange mechanism 2. The exhaust pipes 9 are equipped with a heat energy recovery mechanism, which is also connected to the water storage tank 3 through the first water pump 25.

[0025] Furthermore, such as Figure 1-5 As shown, the heat exchange mechanism 2 includes a cylindrical insulation shell 22. The end of the air outlet pipe 11 passes through the insulation shell 22 and communicates with the interior of the insulation shell 22. The inner wall of the insulation shell 22 is distributed with heat exchange tubes 23 coiled in a "bow" shape around the axis. One end of the heat exchange tube 23 passes through the outer wall of the insulation shell 22 and is connected to the outlet end of the first water pump 25 through the first pipe 24. The inlet end of the first water pump 25 is connected to the water storage tank 3 through the second pipe 8. The other end of the heat exchange tube 23 passes through the outer wall of the insulation shell 22 and is connected to the interior of the water storage tank 3 through the third pipe 6.

[0026] Furthermore, such as Figure 1-5 As shown, the hot air disperser includes a motor 29, a main shaft 28, and dispersing blades. The main shaft 28 is rotatably connected to the axis of the insulation shell 22. One end of the main shaft 28 passes through the insulation shell 22 and is fixedly connected to the output shaft end of the motor 29, which is fixedly installed on the outer wall of the insulation shell 22. Several dispersing blades 27 are evenly distributed around the axis on the outer wall of the main shaft 28. The dispersing blades 27 are used in conjunction with the air outlet pipe 11 entering the insulation shell and are used to guide the hot air to the heat exchange pipes 23 distributed on the side wall of the insulation shell.

[0027] Furthermore, such as Figure 1-5 As shown, the bottom of the heat-insulating shell 22 is fixedly connected to the base 21, the surface of the dispersing blade 27 is provided with a heat-insulating material layer (not shown in the figure), and the cross-section of the dispersing blade 27 is a U-shaped structure.

[0028] Furthermore, such as Figure 1-5 As shown, the front and rear walls of the heat-insulating shell 22 are evenly distributed with multiple air outlets 26 around the axis. The outer ports of the air outlets 26 are connected to exhaust pipes 9, which are made of thermally conductive metal material.

[0029] Furthermore, such as Figure 1-5As shown, the heat energy recovery mechanism includes a spiral heat exchange tube 20 wound around the outer wall of the exhaust pipe 9. One end of the heat exchange tube 20 is connected to the first pipe 24 (not shown in the figure), and the other end is connected to the third pipe 6 (not shown in the figure).

[0030] Furthermore, such as Figure 1-5 As shown, the second pipe 8 is provided with a branch pipe 7, which is connected to a cold water source. Both the second pipe 8 and the branch pipe 7 are provided with a first solenoid valve (not marked in the figure) and a second solenoid valve (not marked in the figure).

[0031] Furthermore, such as Figure 1-5 As shown, the air outlet pipe 11 is covered with an insulation pipe 12, and the outer wall of the air outlet pipe 11 is equipped with a first temperature sensor (not shown in the figure). The upper part of the inner wall of the water storage tank 3 is equipped with a first liquid level sensor 31 and a second liquid level sensor 32 from top to bottom. The outer wall of the water storage tank 3 between the first liquid level sensor 31 and the second liquid level sensor 32 is connected to a water outlet pipe. The water outlet pipe is connected to the water inlet of the second water pump 4, and the water outlet of the second water pump 4 is connected to the industrial water container used in the mine through a fourth pipe 5.

[0032] Furthermore, such as Figure 1-5 As shown, it also includes a controller (not shown in the figure), which is electrically connected to the power supply and is electrically connected to the motor 29, the first solenoid valve, the second solenoid valve, the first water pump 25, the second water pump 4, the first liquid level sensor 31 and the second liquid level sensor 32 through wires respectively.

[0033] The working principle of this new type:

[0034] Conventional heat recovery methods typically involve connecting heat exchange tubes to the outer wall of the air outlet duct 11, resulting in low heat exchange efficiency because most of the heat energy is exhausted through hot air. This novel design introduces hot air into the insulation shell. Driven by a motor, dispersing blades continuously rotate, guiding the hot air to heat exchange tube one on the inner surface of the insulation shell's side wall. Heat exchange tube one recovers most of the heat from the hot air, while the remaining hot air is exhausted through the exhaust duct 9. A second heat exchange tube is wound around the exhaust duct 9 for further heat recovery. The dispersing blades have a U-shaped structure, effectively guiding the hot air output from the air outlet duct. An insulation tube 12 is fitted over the air outlet duct 11 to prevent heat loss from the duct, making heat recovery more concentrated. A first temperature sensor is also installed on the outer wall of the air outlet duct. When an excessively high temperature is detected, a first solenoid valve closes, and a second solenoid valve opens, allowing cold water to be introduced into heat exchange tube one for rapid cooling of the hot air. After heat exchange, the cold water enters a water storage tank, replenishing the water level in the tank. When the water level in the storage tank reaches the height detected by the first liquid level sensor and the temperature reaches the industrial water temperature (a second temperature sensor 33 is installed on the inner wall of the storage tank), the second water pump 4 is activated to output industrial water. If the water level is lower than the height detected by the second liquid level sensor, water can be added through a branch pipe as needed. The outer walls of the first to fourth pipes are all lined with insulation material to prevent heat loss during circulation. An overflow pipe is installed at the top of the storage tank to prevent the water volume from exceeding its capacity.

Claims

1. 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