A pot type baking furnace for baking prebaked anodes for aluminum

Abstract

The present invention relates to the field of prebaked anodes. The present invention discloses a can type baking furnace for baking prebaked anodes for aluminum, comprising a furnace body, wherein the furnace body is provided with a plurality of furnace paths and a plurality of furnace chambers opened on both sides of the furnace paths, and both sides of each of the furnace chambers are provided with fire path walls, and the upper surface of the furnace paths is lower than the upper surface of the fire path walls, and a main shaft is installed on each of the furnace bodies through a rotating device, and a bearing plate matching the number of furnace chambers is installed on each of the main shafts, and two groups of clamping blocks and two groups of movable wheels controlled to rotate by a transmission device are installed on the bottom surface of the bearing plate. The present invention improves the matching degree between the carbon bowl sheet and the carbon holes of the prebaked anodes on the market, and when facing carbon holes of different calibers, it is not necessary to customize separately and avoid the falling off of the carbon bowl sheet when loading the furnace, which leads to the reduction of the quality of the prebaked anode, thereby improving the production quality.

Description

Technical Field

[0001] The invention relates to the technical field of prebaked anodes, in particular to a pot-type baking furnace for baking prebaked anodes for aluminum. Background Art

[0002] The production of prebaked anodes is the process of baking carbon blocks. The general process is to make a matching carbon bowl piece according to the pore size on the carbon block, and then manually place it in the carbon hole. Generally, there are three carbon holes on the surface of a prebaked anode. After placement, the carbon block is clamped by an overhead crane and then loaded into the furnace. At the same time, the furnace cavity is filled with materials and finally baked.

[0003] However, the process of making corresponding carbon bowl pieces according to different carbon pore diameters, manually installing them, and then filling them with materials will increase the economic and time costs. In addition, the carbon bowl pieces will fall off during the clamping and moving process, causing the carbon pores to collapse, resulting in a reduction in the quality of the prebaked anode. For every percentage point reduction, the cost of each ton of prebaked anode will be affected by about RMB 15-20. Summary of the invention

[0004] The purpose of the present invention is to reduce the time cost and economic cost of making prebaked anodes, while saving steps and improving the quality of prebaked anodes, and to propose a pot-type baking furnace for baking prebaked anodes for aluminum.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A pot-type roasting furnace for roasting prebaked anodes for aluminum, comprising a furnace body, wherein the furnace body is provided with a plurality of furnace paths and a plurality of furnace cavities opened on both sides of the furnace paths, both sides of each of the furnace cavities are provided with fire path walls, the upper surface of the furnace paths is lower than the upper surface of the fire path walls, each of the furnace bodies is provided with a main shaft through a rotating device, each of the main shafts is provided with a bearing plate matching the number of furnace cavities, two groups of clamping blocks and two groups of movable wheels controlled to rotate by a transmission device are provided on the bottom surface of the bearing plate, each of the clamping blocks is provided with equal intervals on the bearing plate and is located in the middle of the movable wheel, a transmission housing is provided on the upper surface of the bearing plate, the transmission device is located in the transmission housing, and there is a height difference H between the lowest point of the clamping block and the lowest point of the movable wheel;

[0007] The clamping block is columnar and hollow inside, a diaphragm is installed on the arc-shaped side wall of the clamping block, an insulating sphere is installed inside the clamping block and is close to the inner wall of the diaphragm, an insulating column is fixedly connected to the insulating sphere, one end of the insulating column slides and passes through the side wall of the clamping block, a second spring is installed between the insulating sphere and the side wall of the clamping block and is sleeved on the insulating column, one side of the clamping block is also provided with an equipment block installed on a bearing plate, and a second electromagnet is installed on the side of the equipment block close to the clamping block.

[0008] Preferably, the supporting plate is provided with a plurality of filling ports, each of which is slidably connected with a filling column, and each of the filling ports is also provided with a filling tube fixedly connected to the upper surface of the supporting plate, the filling column is located in the filling tube and can slide up and down, an installation cavity is provided on the inner side wall of the filling tube, a plurality of first springs are installed in the installation cavity, a fixing block is installed at the upper end of the first spring, a first electromagnet for adsorbing the fixing block is installed on the upper side wall of the installation cavity, the first electromagnet is controlled to start and stop by a control switch, the upper end of the filling column is connected with a bellows, and the lower end face of the filling column is arranged in an arc shape.

[0009] Preferably, the outer side wall of the arc-shaped surface of the clamping block is inwardly concave, and two ends of the concave surface are provided with spherical protrusions integrally formed therewith.

[0010] Preferably, an indicator light is also installed in the equipment block, and a conductive sheet for connecting the circuit is installed at one end of the insulating column away from the insulating sphere.

[0011] Preferably, a slot is formed at one end of the bearing plate away from the main shaft, a carbon bowl piece limiting block is clamped in the slot, and the length of the slot is greater than the length of the carbon bowl piece limiting block.

[0012] Preferably, the height difference H is 1-3 mm.

[0013] Preferably, the control switch is a circuit switch, the equipment block and the first electromagnet share a power supply, and a parallel circuit is formed between the two, a resistor is installed on the circuit connected to the first electromagnet, and a circuit breaker is provided on the circuit connected to the equipment block.

[0014] A carbon bowl sheet for a can type baking furnace used for baking prebaked anodes for aluminum comprises a ring-mounted carbon bowl sheet, one end of which is an insert end, and the other end of which is provided with a slot end matching the insert end.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The matching degree between the carbon bowl and the pre-baked anode carbon holes on the market is improved. When facing carbon holes of different diameters, there is no need for separate customization.

[0017] 2. Reduce economic and time costs and increase production profits.

[0018] 3. Avoid the falling off of carbon bowl sheets during furnace loading, which will reduce the quality of prebaked anodes and improve production quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the front structure of a pot-type baking furnace for baking prebaked anodes for aluminum proposed by the present invention;

[0020] Figure 2 It is a partial front structural schematic diagram of the load-bearing plate;

[0021] Figure 3 It is a schematic diagram of the local cross-sectional structure of the filling column;

[0022] Figure 4 It is a schematic diagram of the local bottom surface structure of the load-bearing plate;

[0023] Figure 5 for Figure 4 A is a partial enlarged schematic diagram;

[0024] Figure 6 It is a schematic diagram of the local cross-sectional structure of the clamping block;

[0025] Figure 7 It is a schematic diagram of the structure before and after the diameter of the ring-mounted carbon bowl is adjusted;

[0026] Figure 8 It is a schematic diagram of the local structure of the control switch circuit;

[0027] Fig. 9 It is a structural schematic diagram of the height difference between the clamping block and the movable wheel.

[0028] In the figure: 1 furnace body, 2 fire channel wall, 3 furnace cavity, 4 bearing plate, 5 main shaft, 6 carbon bowl piece limit block, 7 filling port, 8 clamping block, 9 ring-mounted carbon bowl piece, 10 movable wheel, 11 conductive sheet, 12 assembly block, 13 filling tube, 14 transmission housing, 15 bellows, 16 fixing block, 17 first spring, 18 dual-axis motor, 19 filling column, 20 first electromagnet, 21 insulating column, 22 diaphragm, 23 protrusion, 24 insulating sphere, 25 second spring, 91 plug end, 92 slot end. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] refer to Figure 7 A carbon bowl sheet for a can-type baking furnace used for baking prebaked aluminum anodes, comprising a ring-mounted carbon bowl sheet 9, one end of the ring-mounted carbon bowl sheet 9 being an insert end 91, and the other end of the ring-mounted carbon bowl sheet 9 being provided with a slot end 92 matching the insert end 91. By utilizing the position of the insert end 91 in the slot end 92, the diameter of the inside of the ring-mounted carbon bowl sheet 9 can be changed as required, thereby improving the matching degree between the carbon bowl sheet and the carbon holes of prebaked anodes on the market.

[0031] Reference Figure 1-Figure 6, a can-type roasting furnace for roasting prebaked anodes for aluminum, comprising a furnace body 1, wherein the furnace body 1 is provided with a plurality of furnace paths and a plurality of furnace chambers 3 opened on both sides of the furnace paths, and a fire path wall 2 is provided on both sides of each furnace chamber 3. The use area of ​​the roasting furnace used in the factory is at least several hundred square meters, and the mass of each prebaked anode is as high as one hundred kilograms. With a large number of prebaked anodes fired at the same time, the time cost will increase when loading carbon bowl sheets, and the upper surface of the furnace path is lower than the upper surface of the fire path wall 2. The plane of the furnace path is slightly higher than the height of the prebaked anode and lower than the upper surface of the fire path wall 2. This is to better match the position between the entire bearing plate 4 and the prebaked anode at startup. A main shaft 5 is installed on each furnace body 1 through a rotating device, and the rotating device can be driven by a servo motor or manually. A bearing plate 4 matching the number of furnace chambers 3 is installed on each main shaft 5, and two sets of clamping blocks 8 and two sets of movable wheels 10 controlled to rotate by a transmission device are installed on the bottom surface of the bearing plate 4. Each clamping block 8 is installed at equal intervals On the supporting plate 4 and in the middle of the movable wheel 10, a transmission housing 14 is installed on the upper surface of the supporting plate 4, and the transmission device is located in the transmission housing 14. The transmission device includes a transmission belt, a transmission gear, and a transmission shaft. The transmission shaft and the movable wheel 10 match each other. When the transmission shaft rotates, it drives the movable wheel 10 to rotate. The driving shaft on the dual-axis motor 18 and the first transmission shaft are meshed and connected by helical gears. When the driving shaft rotates, the helical gear is driven to rotate, thereby driving the first transmission shaft to rotate. The transmission gear on the first transmission shaft is used to drive the transmission belt to rotate, so that the movable wheels 10 on one side are rotated. The number of transmission belts, transmission gears, and transmission shafts is selected according to actual conditions, and the connection relationship between the movable wheel 10, the driving shaft, the transmission belt, the transmission gear, and the transmission shaft belongs to the prior art, and the transmission device produced by the combination can be purchased on the market. It belongs to the prior art and is not described in detail. There is a height difference H between the lowest point of the clamping block 8 and the lowest point of the movable wheel 10, reference Fig. 9, the height difference H is 1-3mm. Since the carbon bowl piece is made of cardboard, when the cardboard is bent into a ring shape, multiple creases will be generated. Although the cardboard has certain compressibility and resilience, the amplitude of the rebound when there are creases is mostly between millimeters and centimeters. The height difference H is between 1-3mm, which can ensure that the cardboard has better resilience when the diameter is expanded. The ring-mounted carbon bowl piece 9 is placed between the movable wheels 10. The distance between the two rows of movable wheels 10 is smaller than the diameter of the ring-mounted carbon bowl piece 9. The reaction force generated when the ring-mounted carbon bowl piece 9 is deformed is transmitted to the movable wheel 10. The friction force generated by such a force prevents the ring-mounted carbon bowl piece 9 from falling. When the movable wheel 10 rotates, it will drive the ring-mounted carbon bowl piece 9 to move. When it moves to the first clamping block 8, it will enter the arc surface on the clamping block 8. At this time, the ring-mounted carbon bowl piece 9 cannot move. The diaphragm 22 is tough. When the insulating sphere 24 is against the diaphragm 22, the extrusion force will be transmitted to the ring-mounted carbon The first ring-mounted carbon bowl piece 9 is moved to the upper and lower ends of the support plate 4, and the second ...

[0032] The clamp block 8 is columnar and hollow inside. A diaphragm 22 is installed on the arc-shaped side wall of the clamp block 8. The height difference from the vertex of the arc-shaped surface of the diaphragm 22 to the lowest point of the protrusion 23 is greater than 3 mm. An insulating sphere 24 is installed inside the clamp block 8, which is close to the inner wall of the diaphragm 22. An insulating column 21 is fixedly connected to the insulating sphere 24. One end of the insulating column 21 slides and passes through the side wall of the clamp block 8. A second spring 25 sleeved on the insulating column 21 is installed between the insulating sphere 24 and the side wall of the clamp block 8. One side of the clamp block 8 is also provided with an equipment block 12 installed on the bearing plate 4. The equipment block 12 is close to one side of the clamp block 8. A second electromagnet is installed on the side. When the ring-mounted carbon bowl piece 9 is all in the predetermined position, the second electromagnet is energized to attract the conductive sheet 11. At this time, the insulating column 21 moves toward the position of the equipment block 12, and the insulating sphere 24 separates from the diaphragm 22. There is no squeezing pressure on the ring-mounted carbon bowl piece 9. At this time, the ring-mounted carbon bowl piece 9 will move downward under the action of gravity and enter the carbon hole. When the ring-mounted carbon bowl piece 9 is loaded for the second time, the power is cut off, and there is no magnetic attraction between the conductive sheet 11 and the second electromagnet. The second spring 25 rebounds and pushes the insulating sphere 24 back to its original position to hold the diaphragm 22.

[0033] A plurality of filling ports 7 are provided on the carrier plate 4, each of which is slidably connected with a filling column 19, and each of which is also provided with a filling tube 13 fixedly connected to the upper surface of the carrier plate 4, the filling column 19 is located in the filling tube 13 and can slide up and down, and an installation cavity is provided on the inner side wall of the filling tube 13, and a plurality of first springs 17 are installed in the installation cavity, and a fixing block 16 is installed on the upper end of the first spring 17, and a first electromagnet 20 for adsorbing the fixing block 16 is installed on the upper side wall of the installation cavity. In the initial state, the first electromagnet 20 is energized to adsorb the fixing block 16, and the first electromagnet 20 is controlled to start and stop by the control switch, and the filling column 19 is The upper end is connected with a bellows 15, and the lower end face of the filling column 19 is arranged in an arc shape. One end of the ring-mounted carbon bowl piece 9 is an insert end 91, and the other end of the ring-mounted carbon bowl piece 9 is provided with a slot end 92 matching the insert end 91. When the ring-mounted carbon bowl piece 9 falls into the carbon hole, the first electromagnet 20 is powered off, and the filling column 19 will slowly fall under the action of gravity. At this time, the first spring 17 is compressed, but not compressed to the limit state, and the feeding starts through the bellows 15 at the same time. One end of the bellows 15 is located in the filling silo through the pump. The bellows 15 is retractable and flexible, can be deformed, and can be installed and placed in a more suitable site and equipment position. When the pump starts to deliver the material, the speed and mass of the filling material entering the filling column 19 are constantly changing, and the change range is large. After a period of time, the speed and mass of the filling material entering the filling column 19 tend to be stable. When the change range is large, the energy impact on the filling column 19 will cause the filling column 19 to move downward and put the first spring 17 in an extreme compression state. When the speed and mass of the filling column 19 decrease, the first spring 17 will rebound a short distance. This motion state will continue for a period of time. During this period of time, the filling material enters the central area of ​​the carbon bowl in the carbon pore through the channel inside the filling column 19. As more and more filling material is added, the filling column 19 will enter the center of the filling material when it moves downward, so that the stacked filling material will diffuse to the surroundings, and as more and more filling material is added, the inside of the carbon bowl sheet will be filled up. In this process, when the filling column 19 enters the center of the filling material, the filling material diffuses outward and squeezes the ring-mounted carbon bowl sheet 9, allowing the ring-mounted carbon bowl sheet 9 to slowly expand its diameter until the expanded ring-mounted carbon bowl sheet 9 is attached to the inner wall of the carbon hole, and the filling material continues to be added. After overflowing, it falls from the side of the prebaked anode and enters the gap between the prebaked anode and the fire channel wall 2, gradually filling up until the prebaked anode is completely filled, and the entry of filling material is stopped.

[0034] The outer side wall of the arcuate surface of the clamping block 8 is concave inwardly, and both ends of the concave surface are provided with spherical protrusions 23 integrally formed therewith. The concave arcuate surface is more compatible with the ring-mounted carbon bowl piece 9, and the protrusion 23 plays a limiting role. The direction of the force of the contact part between the protrusion 23 and the ring-mounted carbon bowl piece 9 is inward, so that the ring-mounted carbon bowl piece 9 will not deviate during the falling process and will fall in the central area of ​​the carbon hole as much as possible.

[0035] The equipment block 12 is also equipped with an indicator light. The end of the insulating column 21 away from the insulating sphere 24 is equipped with a conductive sheet 11 for connecting the circuit. The control switch is a circuit switch. Figure 8 , the equipment block 12 and the first electromagnet 20 share a power supply, and the two are in a parallel circuit. A resistor is installed on the circuit connected to the first electromagnet 20, and a circuit breaker is provided on the circuit connected to the equipment block 12. The circuit breaker is set between the conductive sheet 11 and the second electromagnet, which is equivalent to a knife switch and belongs to the prior art. The working principle is not described in detail. When the conductive sheet 11 is not adsorbed, the first electromagnet 20 is energized, the indicator light is off, and the fixed block 16 is in an adsorbed state. When the conductive sheet 11 is adsorbed, since the circuit of the indicator light is not equipped with a resistor, the current will pass through the circuit of the conductive sheet 11, the indicator light is on, and the first electromagnet 20 is powered off, and the filling column 19 moves downward to complete the subsequent process flow. The circuit parts installation and circuit design involved in the above part belong to conventional existing designs, which are widely used and belong to the prior art. The working principle and connection method are not described in detail.

[0036] The whole process is as follows:

[0037] Before loading the furnace, the movable wheel 10 is driven by a transmission device, and multiple ring-mounted carbon bowl pieces 9 are placed in the middle of the movable wheel 10 in order, and the ring-mounted carbon bowl pieces 9 are placed between the movable wheels 10. The distance between the two rows of movable wheels 10 is smaller than the diameter of the ring-mounted carbon bowl pieces 9. The reaction force generated when the ring-mounted carbon bowl pieces 9 are deformed is transmitted to the movable wheel 10. The friction force generated by such a force prevents the ring-mounted carbon bowl pieces 9 from falling. When the movable wheel 10 rotates, it drives the ring-mounted carbon bowl pieces 9 to move. When it moves to the first clamping block 8, it enters the arc surface on the clamping block 8. At this time, the ring-mounted carbon bowl piece 9 cannot move. The diaphragm 22 is tough. When the insulating ball When the body 24 is against the diaphragm 22, the extrusion force will be transmitted to the ring-mounted carbon bowl piece 9, thereby clamping the ring-mounted carbon bowl piece 9 and preventing it from moving downward. At this time, there is no contact between the ring-mounted carbon bowl piece 9 and the movable wheel 10. When the second ring-mounted carbon bowl piece 9 moves, it will slowly squeeze the front ring-mounted carbon bowl piece 9, and squeeze the front ring-mounted carbon bowl piece 9 out of the arc surface of the clamping block 8 and continue to contact with the rear movable wheel 10, so that the ring-mounted carbon bowl piece 9 continues to move to the next clamping block 8, and the rear ring-mounted carbon bowl piece 9 will move to the position of the previous ring-mounted carbon bowl piece 9 and stop until the first one contacts the carbon bowl piece limit block 6, thereby completing the filling of the ring-mounted carbon bowl piece 9.

[0038] After the overhead crane loads the prebaked anode into the furnace, the carbon hole is facing upwards, and the main shaft 5 is rotated by the driving device until the bearing plate 4 is in a horizontal state and the rotation of the main shaft 5 is stopped. At this time, the ring-mounted carbon bowl piece 9 is located directly above the carbon hole, and the second electromagnet is energized to adsorb the conductive sheet 11. Then the insulating column 21 moves toward the position of the equipment block 12, and the insulating sphere 24 separates from the diaphragm 22. There is no squeezing pressure on the ring-mounted carbon bowl piece 9. At this time, the ring-mounted carbon bowl piece 9 will move downward under the action of gravity and enter the carbon hole.

[0039] At the same time, when the conductive sheet 11 is adsorbed, the indicator light comes on, indicating that everything is normal.

[0040] At this time, the first electromagnet 20 is powered off and has no adsorption force on the fixed block 16. Under the action of gravity, the filling column 19 will slowly fall. At this time, the first spring 17 is compressed, but not compressed to the limit state. At the same time, feeding begins through the bellows 15. One end of the bellows 15 is located in the filling silo through the pump. The bellows 15 is retractable and flexible, and can be deformed. It can be installed and placed according to the site and equipment position. When the pump just starts to feed, the speed and mass of the filling material entering the filling column 19 are constantly changing, and the change range is large. After a period of time, the speed and mass of the filling material entering the filling column 19 tend to be stable. When the change range is large, the energy impact on the filling column 19 will cause the filling column 19 to move downward and put the first spring 17 in the limit compression state. When the speed and mass of the filling column 19 become smaller , the first spring 17 will rebound a short distance, and this movement state will continue for a period of time. During this period of time, the filler enters the central area of ​​the carbon bowl sheet in the carbon hole through the channel inside the filling column 19. As the filler increases, the filling column 19 will enter the center of the filler when it moves downward, so that the stacked filler will diffuse to the surroundings. As the filler increases, the inside of the carbon bowl sheet will be filled. In this process, when the filling column 19 enters the center of the filler, the filler diffuses outward and squeezes the ring-mounted carbon bowl sheet 9, allowing the ring-mounted carbon bowl sheet 9 to slowly expand its diameter until the expanded ring-mounted carbon bowl sheet 9 is attached to the inner wall of the carbon hole, and the filler continues to be added. After overflowing, it falls from the side of the prebaked anode and enters the gap between the prebaked anode and the fire channel wall 2, gradually filling it up until the prebaked anode is completely filled, and the entry of the filler is stopped.

[0041] When the circuit of the second electromagnet is disconnected, the second spring 25 will reset and squeeze the insulating ball 24 against the diaphragm 22 again, waiting for the next filling of the ring-mounted carbon bowl sheet 9. When the second electromagnet is powered off, the corresponding circuit resistance is infinite, and the circuit will pass through the circuit of the first electromagnet 20. After the first electromagnet 20 is powered on, it will adsorb the fixed block 16, waiting for the second filling, and then reversely drive the main shaft 5 to return the bearing plate 4 to its original position.

[0042] In the project, the staff only needs to stand in place to complete the installation of carbon bowl pieces in multiple carbon holes on a prebaked anode. Moreover, the carbon bowl pieces can adapt to the diameter of the carbon holes on the prepared anode with signals. There is no need to manufacture carbon bowl pieces with different apertures multiple times, which greatly saves time costs and improves work efficiency.

[0043] At the same time, since the carbon bowl piece is installed after the furnace is loaded, it can avoid the carbon bowl piece falling off during the process of clamping the prebaked anode by the overhead crane, which leads to cracking and collapse inside the carbon pores, thereby improving the qualified rate of the prebaked anode and further improving production profits.

[0044] In addition, the installation of the carbon bowl pieces does not require manual pressing one by one into the carbon holes and fitting them into the holes, which further improves production efficiency.

[0045] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A pot-type roasting furnace for roasting prebaked anodes for aluminum, comprising a furnace body (1), wherein the furnace body (1) is provided with a plurality of furnace paths and a plurality of furnace chambers (3) opened on both sides of the furnace paths, and each of the furnace chambers (3) is provided with a fire path wall (2) on both sides, characterized in that: The upper surface of the furnace channel is lower than the upper surface of the fire channel wall (2); a main shaft (5) is installed on each of the furnace bodies (1) via a rotating device; a supporting plate (4) matching the number of furnace chambers (3) is installed on each of the main shafts (5); two groups of clamping blocks (8) and two groups of movable wheels (10) controlled to rotate by a transmission device are installed on the bottom surface of the supporting plate (4); each of the clamping blocks (8) is installed on the supporting plate (4) at equal intervals and is located in the middle of the movable wheel (10); a transmission housing (14) is installed on the upper surface of the supporting plate (4); the transmission device is located in the transmission housing (14); and a height difference H exists between the lowest point of the clamping block (8) and the lowest point of the movable wheel (10); The clamping block (8) is columnar and hollow inside. A diaphragm (22) is installed on the arc-shaped side wall of the clamping block (8). An insulating sphere (24) is installed inside the clamping block (8) and is in close contact with the inner wall of the diaphragm (22). An insulating column (21) is fixedly connected to the insulating sphere (24). One end of the insulating column (21) slides and passes through the side wall of the clamping block (8). A second spring (25) sleeved on the insulating column (21) is installed between the insulating sphere (24) and the side wall of the clamping block (8). One side of the clamping block (8) is also provided with an equipment block (12) installed on the bearing plate (4). A second electromagnet is installed on the side of the equipment block (12) close to the clamping block (8).

2. A pot type roasting furnace for roasting prebaked anodes for aluminum according to claim 1, characterized in that The carrier plate (4) is provided with a plurality of filling ports (7), each of which is slidably connected with a filling column (19), and each of which is also provided with a filling tube (13) fixedly connected to the upper surface of the carrier plate (4). The filling column (19) is located in the filling tube (13) and can slide up and down. An installation cavity is provided on the inner side wall of the filling tube (13), and a plurality of first springs (17) are installed in the installation cavity. A fixing block (16) is installed at the upper end of the first spring (17). A first electromagnet (20) for adsorbing the fixing block (16) is installed on the upper side wall of the installation cavity. The first electromagnet (20) is controlled to start and stop by a control switch. The upper end of the filling column (19) is connected with a bellows (15), and the lower end surface of the filling column (19) is arranged in an arc shape.

3. A pot type roasting furnace for roasting prebaked anodes for aluminum according to claim 2, characterized in that The outer side wall of the arc-shaped surface of the clamping block (8) is recessed inwardly, and both ends of the recessed surface are provided with spherical protrusions (23) integrally formed therewith.

4. A pot type roasting furnace for roasting prebaked anodes for aluminum according to claim 3, characterized in that: An indicator light is also installed in the equipment block (12), and a conductive sheet (11) for connecting a circuit is installed at one end of the insulating column (21) facing away from the insulating sphere (24).

5. A pot type roasting furnace for roasting prebaked anodes for aluminum according to claim 1, characterized in that: A slot is provided at one end of the carrier plate (4) away from the main shaft (5), a carbon bowl piece limit block (6) is clamped in the slot, and the length of the slot is greater than the length of the carbon bowl piece limit block (6).

6. A pot type roasting furnace for roasting prebaked anodes for aluminum according to claim 4, characterized in that: The height difference H is 1-3 mm.

7. A pot type roasting furnace for roasting prebaked anodes for aluminum according to claim 6, characterized in that: The control switch is a circuit switch, the equipment block (12) and the first electromagnet (20) share a power supply, and a parallel circuit is formed between the two. A resistor is installed on the circuit connected to the first electromagnet (20), and a circuit breaker is provided on the circuit connected to the equipment block (12).

8. A carbon bowl sheet for use in a can type roasting furnace for roasting prebaked anodes for aluminum as claimed in any one of claims 1 to 7, comprising a ring-mounted carbon bowl sheet (9), characterized in that: One end of the ring-mounted carbon bowl piece (9) is an insert end (91), and the other end of the ring-mounted carbon bowl piece (9) is provided with a slot end (92) matching the insert end (91).

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