Coal gangue calcined kaolin one-time palletizing and burning tunnel kiln

Abstract

The tunnel kiln comprises a plugging assembly used for plugging, the two ends of the plugging assembly are fixedly communicated with a tunnel kiln and a drying kiln respectively, a suction fan and a driving motor are fixedly installed on the two sides of the top of the plugging assembly respectively, and the output end of the suction fan is fixedly communicated with an air outlet pipe. The top of an inner cavity of the drying kiln is fixedly connected with an air collecting box, the two sides of the air collecting box are fixedly communicated with a plurality of arc-shaped pipes at equal intervals, and the bottoms of the arc-shaped pipes are fixedly communicated with vertical pipes. Heat generated during calcining of the tunnel kiln is adsorbed to the arc-shaped pipe and the vertical pipe through the suction fan and the air inlet pipe and discharged from the holes formed in the surfaces of the arc-shaped pipe and the vertical pipe to dry a green body, drying through independent equipment is not needed, the equipment cost is saved, only one-time stacking is needed, operation is simpler and more convenient, and the efficiency is improved. And the waste heat in the inner cavity of the tunnel kiln is used for drying, so that the operation cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel kilns, in particular to a tunnel kiln for calcining kaolin with gangue and firing it once. Background Art

[0002] Coal gangue is solid waste discharged during the process of tunneling, mining and coal washing. It is a mixture of carbonaceous, muddy and sandy shales with low calorific value. It is a kind of black-gray rock with low carbon content and harder than coal that accompanies coal seams during the coal formation process. With the continuous development of industrial technology, people have discovered that coal gangue can be converted into a widely used kaolin material after calcination in a tunnel kiln.

[0003] When calcining existing coal gangue, the green bodies must first be stacked on a drying car, and then stacked on a kiln car to complete roasting after drying. This requires secondary stacking, which is not only complicated in process, but also requires additional drying equipment, which invisibly increases the cost of kaolin preparation. Utility Model Content

[0004] The utility model aims to provide a tunnel kiln for calcining kaolin with coal gangue and stacking once, so as to solve the problem in the above-mentioned background technology that when calcining existing coal gangue, the green bodies must first be stacked on a drying car, and then stacked on a kiln car to complete the roasting after drying, which requires secondary stacking, which not only has a complicated process, but also requires additional drying equipment, which invisibly increases the cost of kaolin preparation.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a coal gangue calcined kaolin single-stacked firing tunnel kiln, comprising a sealing component for sealing, the two ends of the sealing component are respectively fixedly connected with the tunnel kiln and the drying kiln, the two sides of the top of the sealing component are respectively fixedly installed with a suction fan and a driving motor, the output end of the suction fan is fixedly connected with an air inlet pipe, the bottom of the air inlet pipe is fixedly connected with the top of the tunnel kiln, the output end of the suction fan is fixedly connected with an air outlet pipe, the top of the inner cavity of the drying kiln is fixedly connected with an air collecting box, both sides of the air collecting box are equidistantly fixedly connected with a plurality of arc tubes, the bottom of the arc tube is fixedly connected with a vertical tube, and the bottom of the air outlet pipe penetrates into the inner cavity of the drying kiln and is fixedly connected with the top of the air collecting box.

[0006] Preferably, the blocking assembly includes a support frame, an upper slide groove is provided on the top of the support frame, the inner cavity of the upper slide groove is slidably connected with a blocking plate, guide grooves are provided on both sides of the inner cavity of the upper slide groove, and the upper slide groove is used for the up and down sliding of the blocking plate.

[0007] Preferably, a transmission groove is opened on one side of the guide groove, the inner cavity of the transmission groove is rotatably connected to a transmission screw, the surface of the transmission screw is threadedly connected to a screw nut, and the screw nut is driven to move by the rotation of the transmission screw.

[0008] Preferably, a guide block is fixedly connected to one side of the screw nut, and one end of the two guide blocks passes through the guide groove and is respectively fixedly connected to the two sides of the sealing plate. The movement of the screw nut drives the movement of the guide block, and the movement of the guide block drives the movement of the sealing plate.

[0009] Preferably, a synchronous transverse groove is opened at the top of the upper slide groove, a synchronous wheel is sleeved on the top of the transmission screw, and the two synchronous wheels are connected by a synchronous belt transmission, and the output end of the drive motor is fixedly connected to the top of one of the transmission screws, and the two transmission screws are driven to rotate synchronously through the synchronous wheel and the synchronous belt.

[0010] Preferably, a through groove is provided at the bottom of the inner cavity of the upper slide groove, and the bottom of the blocking plate is engaged with the inner cavity of the through groove, and the through groove is blocked by descending the blocking plate.

[0011] Preferably, a controller is fixedly installed on one side of the drying kiln, and the suction fan and the drive motor are electrically connected to an external power supply through the controller to control the switching of the electrical equipment.

[0012] Preferably, one end of the drying kiln away from the blocking assembly and one end of the tunnel kiln away from the blocking assembly are both hinged with sealing doors for shielding the drying kiln and the tunnel kiln.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. The heat generated during calcination in the tunnel kiln is adsorbed to the inner cavity of the air outlet pipe through the suction fan and the air inlet pipe, and then transported to the inner cavity of the air collecting box through the air outlet pipe. The hot air is transported to the arc pipe and the vertical pipe through the air collecting box, and discharged from the holes on the surface of the arc pipe and the vertical pipe. At this time, the hot air is evenly sprayed on the surface of the green body to dry the green body. There is no need to dry it through a separate equipment, which saves equipment costs. Only one stacking is required, which makes the operation simpler. Drying through the residual heat in the cavity of the tunnel kiln also saves operating costs.

[0015] 2. The driving motor drives the transmission screw to rotate, the rotation of the transmission screw drives the movement of the screw nut, and the movement of the screw nut drives the movement of the guide block, so that the sealing plate descends and engages with the inner cavity of the through groove, thereby sealing the tunnel kiln and the drying kiln to prevent the heat loss in the tunnel kiln cavity from affecting the calcination quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a cross-sectional view of the drying kiln of the utility model;

[0018] Figure 3 It is an enlarged view of part A of the utility model;

[0019] Figure 4 It is a cross-sectional view of the plugging component of the utility model.

[0020] In the figure: 1. sealing assembly; 2. tunnel kiln; 3. drying kiln; 4. suction fan; 5. air inlet pipe; 6. air outlet pipe; 7. air collecting box; 8. arc pipe; 9. vertical pipe; 10. support frame; 11. upper slide groove; 12. guide groove; 13. transmission groove; 14. transmission screw; 15. screw nut; 16. guide block; 17. sealing plate; 18. synchronous transverse groove; 19. synchronous wheel; 20. synchronous belt; 21. driving motor; 22. controller; 23. sealing door; 24. through groove. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4The utility model provides a tunnel kiln for calcining kaolin with coal gangue, comprising a plugging component 1 for plugging, the two ends of the plugging component 1 are respectively fixedly connected with a tunnel kiln 2 and a drying kiln 3, a suction fan 4 and a driving motor 21 are respectively fixedly installed on both sides of the top of the plugging component 1, the output end of the suction fan 4 is fixedly connected with an air inlet pipe 5, the bottom of the air inlet pipe 5 is fixedly connected with the top of the tunnel kiln 2, the output end of the suction fan 4 is fixedly connected with an air outlet pipe 6, and the top of the inner cavity of the drying kiln 3 is fixedly connected with an air collecting box 7, both sides of the air collecting box 7 are evenly and fixedly connected with a plurality of arc tubes 8, the bottom of the arc tubes 8 is fixedly connected with a vertical tube 9, the bottom of the air outlet pipe 6 penetrates into the inner cavity of the drying kiln 3 and is fixedly connected with the top of the air collecting box 7; the dried green bodies are stacked on the kiln car and pushed into the inner cavity of the tunnel kiln 2, the undried green bodies are stacked on the kiln car and then pushed into the inner cavity of the drying kiln 3, and then the driving motor 21 drives one of the transmission screws 14 to rotate, and the two transmission screws 14 are driven by the screw nuts 15 The two transmission screws 14 are connected, thereby realizing synchronous rotation. The rotation of the transmission screw 14 drives the movement of the screw nut 15. The movement of the screw nut 15 drives the movement of the guide block 16, so that the blocking plate 17 descends and engages with the inner cavity of the through groove 24, thereby blocking the tunnel kiln 2 and the drying kiln 3 to prevent the heat loss in the inner cavity of the tunnel kiln 2 from affecting the calcination quality; the dried green body is calcined by the tunnel kiln 2. During the calcination process, the hot smoke in the inner cavity of the tunnel kiln 2 is discharged through the suction fan 4. The hot air is adsorbed to the inner cavity of the air outlet pipe 6 through the air outlet pipe 6, and then transported to the inner cavity of the air collecting box 7 through the air collecting box 7. The hot air is transported to the arc tube 8 and the vertical tube 9, and discharged from the holes opened on the surface of the arc tube 8 and the vertical tube 9. At this time, the hot air is evenly sprayed on the surface of the green body to dry the green body. There is no need to dry it through a separate equipment, which saves equipment cost. It only needs to be stacked once, which makes the operation simpler. Drying through the waste heat in the inner cavity of the tunnel kiln 2 also saves operating costs.

[0023] See also Figure 1-4Further, the blocking component 1 includes a support frame 10, an upper slide groove 11 is provided on the top of the support frame 10, and a blocking plate 17 is slidably connected to the inner cavity of the upper slide groove 11, guide grooves 12 are provided on both sides of the inner cavity of the upper slide groove 11, and a transmission groove 13 is provided on one side of the guide groove 12. A transmission screw 14 is rotatably connected to the inner cavity of the transmission groove 13, and a screw nut 15 is threadedly connected to the surface of the transmission screw 14, and a guide block 16 is fixedly connected to one side of the screw nut 15. One end of the two guide blocks 16 passes through the guide groove 12 and is fixedly connected to the two sides of the blocking plate 17 respectively. A synchronous transverse groove 18 is provided on the top of the upper slide groove 11, and a synchronous wheel 19 is sleeved on the top of the transmission screw 14, and the two synchronous wheels 19 are transmitted through a synchronous belt 20. The output end of the driving motor 21 is fixedly connected to the top of one of the transmission screws 14, a through groove 24 is provided at the bottom of the inner cavity of the upper slide groove 11, and the bottom of the blocking plate 17 is engaged with the inner cavity of the through groove 24. The operation of the driving motor 21 drives one of the transmission screws 14 to rotate, and the two transmission screws 14 are connected by the screw nut 15, thereby realizing the synchronous rotation of the two transmission screws 14, the rotation of the transmission screw 14 drives the movement of the screw nut 15, and the movement of the screw nut 15 drives the movement of the guide block 16, so that the blocking plate 17 descends and engages with the inner cavity of the through groove 24, thereby blocking the tunnel kiln 2 and the drying kiln 3, preventing the heat loss in the inner cavity of the tunnel kiln 2 from affecting the quality of calcination.

[0024] See also Figure 1-4 Furthermore, a controller 22 is fixedly installed on one side of the drying kiln 3, and the suction fan 4 and the driving motor 21 are electrically connected to an external power supply through the controller 22 to control the switching of the electrical equipment.

[0025] See also Figure 1-4 Furthermore, one end of the drying kiln 3 away from the blocking component 1 and one end of the tunnel kiln 2 away from the blocking component 1 are both hinged with a sealing door 23 to block the drying kiln 3 and the tunnel kiln 2.

[0026] During specific use, the dried green bodies are first stacked on the kiln car and pushed into the inner cavity of the tunnel kiln 2, and the undried green bodies are stacked on the kiln car and pushed into the inner cavity of the drying kiln 3, and then the driving motor 21 drives one of the transmission screws 14 to rotate, and the two transmission screws 14 are connected by the screw nut 15, so as to realize the synchronous rotation of the two transmission screws 14, and the rotation of the transmission screw 14 drives the movement of the screw nut 15, and the movement of the screw nut 15 drives the movement of the guide block 16, so that the blocking plate 17 descends and engages with the inner cavity of the through groove 24, thereby blocking the tunnel kiln 2 and the drying kiln 3, preventing the heat loss in the inner cavity of the tunnel kiln 2 from affecting the calcination quality; the dried green bodies are calcined in the tunnel kiln 2, and during the calcination process, the inner cavity of the tunnel kiln 2 carries hot smoke. The air is adsorbed to the inner cavity of the air outlet pipe 6 through the suction fan 4 and the air inlet pipe 5, and then transported to the inner cavity of the air collecting box 7 through the air outlet pipe 6. The hot air is transported to the arc tube 8 and the vertical tube 9 through the air collecting box 7, and discharged from the holes opened on the surface of the arc tube 8 and the vertical tube 9. At this time, the hot air is evenly sprayed on the surface of the blank to dry the blank. There is no need to dry it through a separate equipment, which saves equipment cost. Only one stacking is required, and the operation is simpler. Drying through the waste heat of the inner cavity of the tunnel kiln 2 also saves operating costs. When the tunnel kiln 2 is calcined for the first time, the undried blanks are first stacked and placed in the inner cavity of the drying kiln 3, and then the empty burning of the tunnel kiln 2 is controlled. On the one hand, the inner cavity of the tunnel kiln 2 is preheated, and on the other hand, the hot air enters the inner cavity of the drying kiln 3 to dry the first batch of blanks.

[0027] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A tunnel kiln for calcining kaolin with coal gangue and firing once, comprising a plugging assembly (1) for plugging, characterized in that: The two ends of the blocking component (1) are respectively fixedly connected to the tunnel kiln (2) and the drying kiln (3); the two sides of the top of the blocking component (1) are respectively fixedly installed with a suction fan (4) and a drive motor (21); the output end of the suction fan (4) is fixedly connected to an air inlet pipe (5); the bottom of the air inlet pipe (5) is fixedly connected to the top of the tunnel kiln (2); the output end of the suction fan (4) is fixedly connected to an air outlet pipe (6); the top of the inner cavity of the drying kiln (3) is fixedly connected to an air collecting box (7); both sides of the air collecting box (7) are fixedly connected to a plurality of arc-shaped tubes (8) at equal distances; the bottom of the arc-shaped tube (8) is fixedly connected to a vertical tube (9); the bottom of the air outlet pipe (6) penetrates into the inner cavity of the drying kiln (3) and is fixedly connected to the top of the air collecting box (7).

2. The gangue calcined kaolin one-time stacking tunnel kiln according to claim 1, characterized in that: The blocking component (1) comprises a support frame (10), an upper slide groove (11) is provided on the top of the support frame (10), a blocking plate (17) is slidably connected to the inner cavity of the upper slide groove (11), and guide grooves (12) are provided on both sides of the inner cavity of the upper slide groove (11).

3. The gangue calcined kaolin one-time stacking tunnel kiln according to claim 2, characterized in that: A transmission groove (13) is provided on one side of the guide groove (12); a transmission screw rod (14) is rotatably connected to the inner cavity of the transmission groove (13); and a screw nut (15) is threadedly connected to the surface of the transmission screw rod (14).

4. The gangue calcined kaolin one-stage stacking tunnel kiln according to claim 3, characterized in that: A guide block (16) is fixedly connected to one side of the screw nut (15), and one end of the two guide blocks (16) passes through the guide groove (12) and is respectively fixedly connected to two sides of the blocking plate (17).

5. The one-step stacking tunnel kiln for calcining kaolin with coal gangue according to claim 3, characterized in that: The top of the upper slide groove (11) is provided with a synchronous transverse groove (18), the top of the transmission screw (14) is sleeved with a synchronous wheel (19), and the two synchronous wheels (19) are connected by a synchronous belt (20), and the output end of the drive motor (21) is fixedly connected to the top of one of the transmission screws (14).

6. The gangue calcined kaolin one-stage stacking tunnel kiln according to claim 2, characterized in that: A through groove (24) is provided at the bottom of the inner cavity of the upper slide groove (11), and the bottom of the blocking plate (17) is snap-fitted to the inner cavity of the through groove (24).

7. The one-step stacking tunnel kiln for calcining kaolin with gangue according to claim 1, characterized in that: A controller (22) is fixedly mounted on one side of the drying kiln (3), and the suction fan (4) and the drive motor (21) are both electrically connected to an external power supply through the controller (22).

8. The gangue calcined kaolin one-stage stacking tunnel kiln according to claim 1, characterized in that: One end of the drying kiln (3) away from the blocking component (1) and one end of the tunnel kiln (2) away from the blocking component (1) are both hingedly connected with a sealing door (23).

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