A ceramic kiln waste heat utilization system

Abstract

This utility model discloses a waste heat utilization system for ceramic kilns, belonging to the field of ceramic production technology. It includes a drying chamber with a heating channel connected to one side and an air filter connected to one end of the heating channel. The system comprises a drying chamber, a heating channel, an air filter, a turntable, a mounting frame, guide rails, a placement plate, an air inlet pipe, an air outlet pipe, a spiral heat exchanger pipe, a drive assembly, and an air intake assembly. The glazed ceramic blank is placed on the placement plate. High-temperature flue gas from the ceramic kiln enters the spiral heat exchanger pipe through the air inlet pipe and then exits through the air outlet pipe. The drive assembly is activated, driving the air intake assembly to allow outside air to slowly enter the heating channel through the air filter. After being heated by the spiral heat exchanger pipe, the air enters the drying chamber. The drive assembly drives the turntable to rotate slowly, and the turntable, through the mounting frame and guide rails, drives the placement plate to rotate, ensuring that all parts of the blank are heated evenly.

Description

Technical Field

[0001] This utility model belongs to the field of ceramic production technology, specifically a ceramic kiln waste heat utilization system. Background Technology

[0002] Ceramic production uses clay, feldspar, and other materials as raw materials, and produces products through core processes such as batching, shaping, glazing, and firing. The firing process relies on ceramic kilns and requires a large amount of energy to maintain a high temperature of 800-1400℃. At the same time, it generates waste heat, which accounts for 30% to 50% of the total energy consumption, mainly from the high-temperature flue gas and heat dissipation from the kiln body. The preheating and drying of the glaze is a key link between the glazing process and the firing process. Its goal is to remove the physical water and some of the chemically bound water from the glaze layer on the surface of the glazed body after glazing, so as to avoid cracking of the glaze layer or the formation of pinholes and bubbles due to rapid evaporation of moisture after the body enters the kiln.

[0003] The waste heat from existing ceramic kilns is not being utilized efficiently, which increases the consumption of energy such as natural gas and electricity, drives up production costs, and the heat from high-temperature flue gas exacerbates environmental thermal pollution, affecting the ecological environment of the factory area and its surroundings, which does not meet environmental protection requirements. Utility Model Content

[0004] To overcome the above-mentioned defects, this utility model provides a ceramic kiln waste heat utilization system, which solves the problem of inefficient utilization of existing ceramic kiln waste heat.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a ceramic kiln waste heat utilization system, including a drying box, a heating channel connected to one side of the drying box, an air filter connected to one end of the heating channel, a protective cover fixedly connected to the top of the drying box and the top of the air filter, a driving assembly on the protective cover, a turntable inside the drying box, two mounting brackets fixedly connected to the bottom of the turntable, multiple pairs of placement guide rails fixedly connected to the two mounting brackets, a placement plate between each pair of guide rails, an air inlet pipe and an air outlet pipe fixedly connected to the heating channel, a spiral heat exchange tube connected to one end of the air inlet pipe, and an air inlet assembly inside the heating channel.

[0006] As a further embodiment of this utility model: the air intake assembly includes a pair of connecting rods, both of which are fixedly connected to the inner wall of the heating channel, and a housing is fixedly connected between the pair of connecting rods. A rotating shaft is rotatably connected to the housing, and a fan blade is coaxially fixedly connected to one end of the rotating shaft, while a first bevel gear is coaxially fixedly connected to the other end of the rotating shaft.

[0007] As a further embodiment of this utility model: the drive assembly includes a servo motor, a first drive shaft, and a second drive shaft. The servo motor is fixedly connected to one side of the protective cover. Both the first and second drive shafts are rotatably connected to the protective cover. The output end of the servo motor passes through the protective cover and is rotatably connected to it. A worm gear is coaxially fixedly connected to the output end of the servo motor. One end of the worm gear is rotatably connected to the protective cover. Worm wheels are coaxially fixedly connected to the tops of the first and second drive shafts, respectively. The worm wheels mesh with the worm gear. The bottom of the first drive shaft passes through the drying chamber and is rotatably connected to it. The bottom of the first drive shaft is coaxially fixedly connected to the turntable. The bottom of the second drive shaft passes through the heating channel and the housing, respectively, and is rotatably connected to them. A second bevel gear is coaxially fixedly connected to the bottom of the second drive shaft. The second bevel gear meshes with the first bevel gear.

[0008] As a further embodiment of this utility model, multiple baffles are fixedly connected to the inner wall of the heating channel.

[0009] As a further embodiment of this utility model: an air inlet is provided on one side of the drying box, and a honeycomb rectifier mesh is provided inside the air inlet.

[0010] As a further embodiment of this invention: the drying oven is provided with a door on the side away from the heating channel.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] This utility model includes a drying chamber, a heating channel, an air filter, a turntable, a mounting frame, a guide rail, a placement plate, an air inlet pipe, an air outlet pipe, a spiral heat exchanger tube, a drive assembly, and an air intake assembly. The glazed ceramic blank is placed on the placement plate. High-temperature flue gas from the ceramic kiln enters the spiral heat exchanger tube through the air inlet pipe and then exits through the air outlet pipe. Activating the drive assembly causes the air intake assembly to operate, allowing outside air to slowly enter the heating channel through the air filter. After being heated by the spiral heat exchanger tube, the air enters the drying chamber, significantly reducing energy consumption and costs. The drive assembly drives the turntable to rotate slowly, and the turntable, through the mounting frame and guide rail, rotates the placement plate, ensuring that all parts of the blank are heated, resulting in more uniform drying. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention. Figure 1 ;

[0014] Figure 2 This is a schematic diagram of the overall structure of the present invention. Figure 2 ;

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the drying oven, the protective cover, and the worm gear of this utility model. Figure 1;

[0016] Figure 4 This is a schematic diagram of the cross-sectional structure of the drying oven, the protective cover, and the worm gear of this utility model. Figure 2 ;

[0017] Figure 5 This is a schematic diagram of the heating channel structure of this utility model;

[0018] Figure 6 This is a schematic diagram of the cross-sectional structure of the shell of this utility model;

[0019] Figure 7 This is a schematic cross-sectional view of the protective cover of this utility model;

[0020] Figure 8 This is a schematic diagram of the structure of the air inlet pipe, air outlet pipe, spiral heat exchange pipe and baffle plate of this utility model.

[0021] In the diagram: 1. Drying oven; 2. Heating channel; 3. Air filter; 4. Protective cover; 5. Turntable; 6. Mounting bracket; 7. Guide rail; 8. Placement plate; 9. Air inlet pipe; 10. Air outlet pipe; 11. Spiral heat exchange tube; 12. Connecting rod; 13. Housing; 14. Fan blade; 15. First bevel gear; 16. Servo motor; 17. First drive shaft; 18. Second drive shaft; 19. Worm gear; 20. Worm wheel; 21. Second bevel gear; 22. Baffle plate; 23. Honeycomb rectifier mesh; 24. Chamber door. Detailed Implementation

[0022] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0023] like Figures 1-8 As shown, this utility model provides a technical solution:

[0024] A waste heat utilization system for ceramic kilns includes a drying box 1, a heating channel 2 connected to one side of the drying box 1, an air filter 3 connected to one end of the heating channel 2, a protective cover 4 fixedly connected to the top of the drying box 1 and the top of the air filter 3, a drive assembly on the protective cover 4, a turntable 5 inside the drying box 1, two mounting brackets 6 fixedly connected to the bottom of the turntable 5, multiple pairs of placement guide rails 7 fixedly connected to the two mounting brackets 6, a placement plate 8 between each pair of guide rails 7, an air inlet pipe 9 and an air outlet pipe 10 fixedly connected to the heating channel 2, a spiral heat exchange tube 11 connected to one end of the air inlet pipe 9, and an air outlet pipe 10 connected to one end of the spiral heat exchange tube 11, and an air inlet assembly inside the heating channel 2.

[0025] Specifically, guide grooves are provided on the guide rail 7, and the two sides of the placement plate 8 can slide along the corresponding guide grooves on the guide rail 7, so that the placement plate 8 can be removed to facilitate the loading and unloading of the blank. The glazed blank is placed on the placement plate 8, and the high-temperature flue gas from the ceramic kiln enters the spiral heat exchange tube 11 through the air inlet pipe 9 and then exits through the air outlet pipe 10. The drive component is started, and the drive component drives the air inlet component to work, so that the outside air slowly enters the heating channel 2 through the air filter 3, and enters the drying chamber 1 after being heated by the spiral heat exchange tube 11, which greatly reduces energy consumption and cost. The drive component drives the turntable 5 to rotate slowly, and the turntable 5 drives the placement plate 8 to rotate through the mounting bracket 6 and the guide rail 7, so that all parts of the blank are heated, making the drying more uniform.

[0026] The air intake assembly includes a pair of connecting rods 12, both of which are fixedly connected to the inner wall of the heating channel 2. A housing 13 is fixedly connected between the pair of connecting rods 12. A rotating shaft is rotatably connected to the housing 13. A fan blade 14 is coaxially fixedly connected to one end of the rotating shaft, and a first bevel gear 15 is coaxially fixedly connected to the other end of the rotating shaft.

[0027] Specifically, the drive component drives the first bevel gear 15 to rotate, and the first bevel gear 15 rotates the fan blade 14 through the rotating shaft;

[0028] The drive assembly includes a servo motor 16, a first drive shaft 17, and a second drive shaft 18. The servo motor 16 is fixedly connected to one side of the protective cover 4. The first drive shaft 17 and the second drive shaft 18 are both rotatably connected to the protective cover 4. The output end of the servo motor 16 passes through the protective cover 4 and is rotatably connected to it. A worm gear 19 is coaxially fixedly connected to the output end of the servo motor 16. One end of the worm gear 19 is rotatably connected to the protective cover 4. Worm wheels 20 are coaxially fixedly connected to the tops of the first drive shaft 17 and the second drive shaft 18, respectively. The worm wheels 20 mesh with the worm gear 19. The bottom of the first drive shaft 17 passes through the drying chamber 1 and is rotatably connected to it. The bottom of the first drive shaft 17 is coaxially fixedly connected to the turntable 5. The bottom of the second drive shaft 18 passes through the heating channel 2 and the housing 13, respectively, and is rotatably connected to them. A second bevel gear 21 is coaxially fixedly connected to the bottom of the second drive shaft 18. The second bevel gear 21 meshes with the first bevel gear 15.

[0029] Specifically, the worm 19 is provided with a pair of helical teeth that mesh with the worm gear 20. When the servo motor 16 is started, the output end of the servo motor 16 drives the worm 19 to rotate, the worm 19 drives the pair of worm gears 20 to rotate, the worm gears 20 respectively drive the first drive shaft 17 and the second drive shaft 18 to rotate, the first drive shaft 17 drives the turntable 5 to rotate, the second drive shaft 18 drives the second bevel gear 21 to rotate, and the second bevel gear 21 drives the first bevel gear 15 to rotate.

[0030] Multiple baffles 22 are fixedly connected to the inner wall of the heating channel 2;

[0031] Specifically, the baffle 22 can change the airflow direction, prolong the residence time of the outside air in the heating channel 2, and make it fully contact the spiral heat exchange tube 11 to improve the heat exchange efficiency.

[0032] The drying oven 1 has an air inlet on one side, and a honeycomb rectifier mesh 23 is installed inside the air inlet;

[0033] Specifically, the drying chamber 1 is connected to the heating channel 2 through the air inlet. The honeycomb rectifier mesh 23 can use the honeycomb structure to sort out the airflow heated by the heating channel 2, break up the eddies in the airflow, and make the airflow enter the drying chamber 1 in a uniform and parallel state.

[0034] The drying oven 1 is provided with a door 24 on the side away from the heating channel 2;

[0035] Specifically, the door 24 can be rotated to open and close on one side of the drying oven 1.

[0036] The working principle of this utility model is as follows:

[0037] After glazing, the blank is placed on the placement plate 8. The high-temperature flue gas from the ceramic kiln enters the spiral heat exchange tube 11 through the air inlet pipe 9 and then exits through the air outlet pipe 10.

[0038] The servo motor 16 is started, and the output of the servo motor 16 drives the worm gear 19 to rotate. The worm gear 19 drives a pair of worm wheels 20 to rotate. The worm wheels 20 drive the first drive shaft 17 and the second drive shaft 18 to rotate respectively. The second drive shaft 18 drives the second bevel gear 21 to rotate. The second bevel gear 21 drives the first bevel gear 15 to rotate. The first bevel gear 15 rotates the fan blades 14 through the rotating shaft, so that the outside air slowly enters the heating channel 2 through the air filter 3. After being heated by the spiral heat exchange tube 11, it enters the drying oven 1, which greatly reduces energy consumption and cost.

[0039] The first drive shaft 17 drives the turntable 5 to rotate, and the turntable 5 drives the placement plate 8 to rotate through the mounting frame 6 and guide rail 7, so that all parts of the blank are heated, making the drying more uniform.

[0040] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A ceramic kiln waste heat utilization system, comprising a drying oven (1), characterized in that: A heating channel (2) is connected to one side of the drying box (1), and an air filter (3) is connected to one end of the heating channel (2). A protective cover (4) is fixedly connected to the top of the drying box (1) and the top of the air filter (3). A drive assembly is provided on the protective cover (4). A turntable (5) is provided inside the drying box (1). Two mounting brackets (6) are fixedly connected to the bottom of the turntable (5). Multiple pairs of placement guide rails (7) are fixedly connected to the two mounting brackets (6). A placement plate (8) is provided between each pair of guide rails (7). An air inlet pipe (9) and an air outlet pipe (10) are fixedly connected to the heating channel (2). A spiral heat exchange tube (11) is connected to one end of the air inlet pipe (9). One end of the spiral heat exchange tube (11) is connected to the air outlet pipe (10). An air inlet assembly is provided inside the heating channel (2).

2. The ceramic kiln waste heat utilization system according to claim 1, characterized in that: The air intake assembly includes a pair of connecting rods (12), both of which are fixedly connected to the inner wall of the heating channel (2). A housing (13) is fixedly connected between the pair of connecting rods (12). A rotating shaft is rotatably connected to the housing (13). A fan blade (14) is coaxially fixedly connected to one end of the rotating shaft, and a first bevel gear (15) is coaxially fixedly connected to the other end of the rotating shaft.

3. The ceramic kiln waste heat utilization system according to claim 2, characterized in that: The drive assembly includes a servo motor (16), a first drive shaft (17), and a second drive shaft (18). The servo motor (16) is fixedly connected to one side of the protective cover (4). The first drive shaft (17) and the second drive shaft (18) are both rotatably connected to the protective cover (4). The output end of the servo motor (16) passes through the protective cover (4) and is rotatably connected to it. A worm gear (19) is coaxially fixedly connected to the output end of the servo motor (16). One end of the worm gear (19) is rotatably connected to the protective cover (4). The first drive shaft (17) and the second drive shaft... (18) A worm gear (20) is coaxially fixedly connected to the top of the first drive shaft (17), which meshes with the worm (19). The bottom of the first drive shaft (17) passes through the drying box (1) and is rotatably connected to it. The bottom of the first drive shaft (17) is coaxially fixedly connected to the turntable (5). The bottom of the second drive shaft (18) passes through the heating channel (2) and the housing (13) and is rotatably connected to them. The bottom of the second drive shaft (18) is coaxially fixedly connected to the second bevel gear (21), which meshes with the first bevel gear (15).

4. The ceramic kiln waste heat utilization system according to claim 1, characterized in that: Multiple baffles (22) are fixedly connected to the inner wall of the heating channel (2).

5. A ceramic kiln waste heat utilization system according to claim 1, characterized in that: The drying box (1) has an air inlet on one side, and a honeycomb rectifier mesh (23) is installed inside the air inlet.

6. A ceramic kiln waste heat utilization system according to claim 5, characterized in that: The drying oven (1) has a door (24) on the side away from the heating channel (2).

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