Coal gangue tunnel kiln

Abstract

The utility model discloses a coal gangue tunnel kiln which comprises a ground and a tunnel kiln body, the tunnel kiln body is arranged at the upper end of the ground, a hot air channel is installed at the upper end of the tunnel kiln body, a fan is installed at the upper end of the hot air channel, and a waste heat utilization mechanism is installed at one end of the fan and comprises a heat preservation water tank and a filtering mechanism. A temperature sensor is mounted on the inner wall of the heat preservation water tank; a filtering mechanism is mounted at the top in the heat preservation water tank; a spiral heat exchange pipe is mounted at the right end of the filtering mechanism; and one end of the spiral heat exchange pipe penetrates through the upper end of the heat preservation water tank. Hot air is filtered through the filtering area, heat exchange is conducted between the hot air and water in the heat preservation water tank through the blowing cover, the fixing cylinder, the connecting pipe and the spiral heat exchange pipe, the temperature of water in the heat preservation water tank is increased, waste heat is effectively utilized, resources are saved, meanwhile, the cleaning frequency of the filter screen is low, and time and labor are saved.

Description

Technical Field

[0001] The utility model relates to the field of coal gangue production, in particular to a coal gangue tunnel kiln. Background Art

[0002] When firing coal gangue sintered porous bricks in a tunnel kiln, a large amount of hot gas is generated within the tunnel kiln. To avoid waste, the heat in this gas is recovered and reused through a heat exchanger. However, this gas contains impurities generated by firing the sintered porous bricks. Directly entering the heat exchange tubes, the impurities are likely to remain on the inner walls of the heat exchange tubes, affecting the heat recovery efficiency of the heat exchange tubes. Therefore, those skilled in the art have provided a coal gangue tunnel kiln to address the problems raised in the above-mentioned background art. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a coal gangue tunnel kiln, comprising a ground and a tunnel kiln, wherein a tunnel kiln is arranged on the upper end of the ground, a hot air channel is installed on the upper end of the tunnel kiln, a fan is installed on the upper end of the hot air channel, a waste heat utilization mechanism is installed at one end of the fan, the waste heat utilization mechanism comprises an insulated water tank and a filtering mechanism, a water supply pipe is installed on the upper end of the insulated water tank, a drain pipe is installed on the right end of the insulated water tank, and the drain pipe is connected to a water storage tank, a valve is installed on the outer surface of the drain pipe, a temperature sensor is installed on the inner wall of the insulated water tank, a filtering mechanism is installed on the top of the insulated water tank, a spiral heat exchange tube is installed on the right end of the filtering mechanism, and one end of the spiral heat exchange tube passes through the upper end of the insulated water tank.

[0004] Preferably, the filtering mechanism includes a fixed cylinder and a fixed ring, the upper end of the fixed cylinder passes through the thermal insulation water tank, and the fixed cylinder and the upper end of the thermal insulation water tank are fixedly connected, and the fixed ring is installed at the bottom of the fixed cylinder.

[0005] Preferably, through holes are provided on the sides of the fixed cylinder and the fixed ring, a blow hood is installed at the position corresponding to the through hole on the side of the fixed cylinder, and the blow hood is connected to the fan, a connecting pipe is installed at the lower end of the fixed cylinder, and the connecting pipe is connected to the spiral heat exchange pipe.

[0006] Preferably, a rotating ring is provided inside the fixed cylinder, and the rotating ring is located between the fixed cylinder and the fixed ring. Several filtering areas are provided inside the rotating ring, and the size of the filtering areas is the same as the size of the through holes. A circular plate is installed on the upper end of the rotating ring.

[0007] Preferably, a rotating shaft is installed on the upper end of the circular plate, a bearing is installed on the outer surface of the rotating shaft, an L-shaped rod is symmetrically installed on the side of the bearing, a fastening bolt is installed inside the L-shaped rod, and a threaded groove is opened at the position of the fastening bolt at the upper end of the insulated water tank.

[0008] Preferably, an annular rack is installed on the side surface of the circular plate, the annular rack is meshed with the gear, a motor is installed on the upper end of the gear, and the motor is fixedly connected to the thermal insulation water tank.

[0009] Technical effects and advantages of this utility model:

[0010] The utility model filters the hot air through the filter area to prevent impurities from remaining on the inner wall of the heat exchange tube, and exchanges heat between the hot air and the water in the thermal insulation water tank through the blowing hood, the fixed cylinder, the connecting pipe and the spiral heat exchange tube, so that the water temperature in the thermal insulation water tank is increased, which effectively utilizes the waste heat and saves resources. At the same time, the filter screen has a low cleaning frequency, which saves time and effort. At the same time, the filter screen is also very convenient to clean. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of this application;

[0012] Figure 2 It is a structural diagram of the waste heat utilization mechanism of this application;

[0013] Figure 3 It is a structural diagram of the fixed cylinder of this application;

[0014] Figure 4 It is a structural diagram of the rotating ring of the present application;

[0015] In the picture:

[0016] 1. Ground; 2. Tunnel kiln; 3. Hot air channel; 4. Fan; 5. Waste heat utilization mechanism; 6. Insulated water tank; 7. Temperature sensor; 8. Water supply pipe; 9. Drain pipe;

[0017] 10. Filter mechanism; 11. Fixed cylinder; 12. Fixed ring; 13. Through hole; 14. Blowing hood; 15. Rotating ring; 16. Filtering area; 17. Circular plate; 18. Ring rack; 19. Rotating shaft;

[0018] 20. Bearing; 21. L-shaped rod; 22. Fastening bolts; 23. Gear; 24. Motor; 25. Connecting pipe; 26. Spiral heat exchange tube. DETAILED DESCRIPTION

[0019] The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

[0020] See also Figures 1 to 4In this embodiment, a coal gangue tunnel kiln is provided, including a ground 1 and a tunnel kiln 2, wherein the tunnel kiln 2 is arranged on the upper end of the ground 1, a hot air channel 3 is installed on the upper end of the tunnel kiln 2, a fan 4 is installed on the upper end of the hot air channel 3, a waste heat utilization mechanism 5 is installed at one end of the fan 4, the waste heat utilization mechanism 5 includes an insulated water tank 6 and a filtering mechanism 10, a water supply pipe 8 is installed on the upper end of the insulated water tank 6, a drain pipe 9 is installed on the right end of the insulated water tank 6, and the drain pipe 9 is connected to the water storage tank, a valve is installed on the outer surface of the drain pipe 9, a temperature sensor 7 is installed on the inner wall of the insulated water tank 6, a filtering mechanism 10 is installed on the top of the insulated water tank 6, the filtering mechanism 10 includes a fixed cylinder 11 and a fixed ring 12, the upper end of the fixed cylinder 11 passes through the insulated water tank 6, and the fixed cylinder 11 and the upper end of the insulated water tank 6 are fixedly connected, a fixing ring 12 is installed on the bottom of the fixed cylinder 11, and through holes 13 are provided on the side surfaces of the fixed cylinder 11 and the fixed ring 12, and a blowing hood 14 is installed on the side surface of the fixed cylinder 11 corresponding to the through hole 13, and The blower hood 14 is connected to the fan 4. The connecting pipe 25 is installed at the lower end of the fixed cylinder 11, and the connecting pipe 25 is connected to the spiral heat exchange tube 26. A rotating ring 15 is set inside the fixed cylinder 11, and the rotating ring 15 is located between the fixed cylinder 11 and the fixed ring 12. Several filter areas 16 are set inside the rotating ring 15, and the size of the filter area 16 is the same as the size of the through hole 13. A circular plate 17 is installed on the upper end of the rotating ring 15, and a rotating shaft 19 is installed on the upper end of the circular plate 17. The outer surface of the rotating shaft 19 is installed with a bearing 2 0, an L-shaped rod 21 is symmetrically installed on the side of the bearing 20, a fastening bolt 22 is installed inside the L-shaped rod 21, a threaded groove is provided on the upper end of the thermal insulation water tank 6 corresponding to the position of the fastening bolt 22, an annular rack 18 is installed on the side of the circular plate 17, the annular rack 18 is engaged with the gear 23, a motor 24 is installed on the upper end of the gear 23, and the motor 24 is fixedly connected to the thermal insulation water tank 6, a spiral heat exchange tube 26 is installed on the right end of the filtering mechanism 10, and one end of the spiral heat exchange tube 26 passes through the upper end of the thermal insulation water tank 6.

[0021] The working principle of the utility model is as follows: the hot air enters the heat preservation water tank 6 through the water supply pipe 8, and is transferred to the blowing cover 14 through the hot air channel 3 by the fan 4. The hot air passes through the filter area 16 through the through hole 13, and the hot air is filtered by the filter area 16. Then, the filtered hot air enters the spiral heat exchange tube 26 through the connecting pipe 25. When the hot air begins to enter the blowing cover 14, the hot air and the water in the heat preservation water tank 6 are heat exchanged through the blowing cover 14, the fixed cylinder 11, the connecting pipe 25 and the spiral heat exchange tube 26, so that the heat preservation water tank 6, the water temperature rises, and the water temperature is sensed by the temperature sensor 7. When the water temperature reaches the required temperature, the valve of the drain pipe 9 is opened, and the hot water in the insulated water tank 6 enters the water storage tank for storage. When the filter area 16 needs to be replaced, the motor 24 drives the circular plate 17 and the rotating ring 15 to rotate intermittently through the engagement of the gear 23 and the annular rack 18, so that the new filter area 16 is transferred to the position of the through hole 13 for filtering. When the rotating ring 15 needs to be cleaned, the fastening bolt 22 is unscrewed out of the threaded groove, and the rotating ring 15 is taken out to clean all the filter areas 16.

[0022] Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without making any creative efforts should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in this utility model shall be implemented in accordance with conventional means in the field unless otherwise specified or limited.

Claims

1. A gangue tunnel kiln, comprising a ground surface (1) and a tunnel kiln (2), characterized in that: A tunnel kiln (2) is provided at the upper end of the ground (1), a hot air channel (3) is installed at the upper end of the tunnel kiln (2), a fan (4) is installed at the upper end of the hot air channel (3), a waste heat utilization mechanism (5) is installed at one end of the fan (4), the waste heat utilization mechanism (5) comprises a heat preservation water tank (6) and a filter mechanism (10), a water supply pipe (8) is installed at the upper end of the heat preservation water tank (6), a drainage pipe (9) is installed at the right end of the heat preservation water tank (6), and the drainage pipe (9) is connected to the water storage tank, a valve is installed on the outer surface of the drainage pipe (9), a temperature sensor (7) is installed on the inner wall of the heat preservation water tank (6), a filter mechanism (10) is installed at the top of the heat preservation water tank (6), a spiral heat exchange pipe (26) is installed at the right end of the filter mechanism (10), and one end of the spiral heat exchange pipe (26) passes through the upper end of the heat preservation water tank (6).

2. A gangue tunnel kiln according to claim 1, characterized in that: The filtering mechanism (10) comprises a fixed cylinder (11) and a fixed ring (12); the upper end of the fixed cylinder (11) passes through the thermal insulation water tank (6), and the fixed cylinder (11) and the upper end of the thermal insulation water tank (6) are fixedly connected; the fixed ring (12) is installed at the bottom of the fixed cylinder (11).

3. A gangue tunnel kiln according to claim 2, characterized in that: Through holes (13) are provided on the side of the fixed cylinder (11) and the side of the fixed ring (12); a blow hood (14) is installed on the side of the fixed cylinder (11) at a position corresponding to the through hole (13); and the blow hood (14) is connected to the fan (4); a connecting pipe (25) is installed at the lower end of the fixed cylinder (11), and the connecting pipe (25) is connected to the spiral heat exchange pipe (26).

4. A gangue tunnel kiln according to claim 2, characterized in that: A rotating ring (15) is provided inside the fixed cylinder (11), and the rotating ring (15) is located between the fixed cylinder (11) and the fixed ring (12). A plurality of filtering areas (16) are provided inside the rotating ring (15), and the size of the filtering areas (16) is the same as the size of the through hole (13). A circular plate (17) is installed on the upper end of the rotating ring (15).

5. A gangue tunnel kiln according to claim 4, characterized in that: A rotating shaft (19) is installed on the upper end of the circular plate (17), a bearing (20) is installed on the outer surface of the rotating shaft (19), an L-shaped rod (21) is symmetrically installed on the side of the bearing (20), a fastening bolt (22) is installed inside the L-shaped rod (21), and a threaded groove is provided at the position of the fastening bolt (22) corresponding to the upper end of the thermal insulation water tank (6).

6. A gangue tunnel kiln according to claim 4, characterized in that: An annular rack (18) is installed on the side of the circular plate (17), the annular rack (18) is meshed with a gear (23), a motor (24) is installed on the upper end of the gear (23), and the motor (24) is fixedly connected to the thermal insulation water tank (6).

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