Fused crystallized white corundum smelting furnace

Abstract

The present application relates to white corundum smelting furnace technical field, disclose a kind of smelting crystallization white corundum smelting furnace, comprising: furnace frame, the top plate opening of the furnace frame is flushly attached with the upper port of melting furnace, the top plate upper surface of the furnace frame is rotatably attached with rotating table, the outer edge of the rotating table is fixedly installed with furnace cover, the outer edge of the rotating table is fixedly installed with front furnace body module on the side away from furnace cover, the furnace cover is attached at the upper port of melting furnace, the middle part of the rotating table is fixedly installed with shell cover.The smelting crystallization white corundum smelting furnace, device can effectively utilize the heat in high-temperature flue gas to preheat white corundum raw material, so as to solve the pain point of high energy consumption and low heating efficiency of traditional equipment, and the device is provided with pressure accumulation type multi-station filter plate automatic switching cleaning structure, which can effectively reduce the risk of filter plate blockage, improve the flue gas filtration efficiency, reduce the downtime of manual maintenance of device.

Description

Technical Field

[0001] This invention relates to the field of white fused alumina smelting furnace technology, specifically a molten crystallization white fused alumina smelting furnace. Background Technology

[0002] The production of molten fused alumina relies on the high-temperature melting of alumina raw materials in an electric arc furnace. The smelting process generates high-temperature dusty flue gas. However, existing fused alumina smelting furnaces still have some problems:

[0003] 1. The high-temperature flue gas generated by traditional smelting furnaces is directly discharged, and the large amount of heat carried by the flue gas cannot be recovered and utilized; the raw materials are directly fed into the cold furnace and need to be continuously heated by the electrode arc with high power, which takes a long time to heat up, consumes a lot of electricity, and results in low melting efficiency of white fused alumina.

[0004] 2. The single-station filter plates of the melting furnace are prone to ash accumulation and blockage after long-term use, resulting in a continuous decline in filtration efficiency. Conventional filtration devices do not have automatic station switching and pulse cleaning structures. Manual disassembly and cleaning of the filter screen during shutdown will interrupt the smelting process and significantly reduce the continuous operation time of the production line.

[0005] To address the aforementioned issues, there is an urgent need for innovative design based on the existing white fused alumina smelting furnace. Summary of the Invention

[0006] The purpose of this invention is to provide a melting and crystallizing white fused alumina smelting furnace to solve the following problems of existing white fused alumina smelting furnaces mentioned in the background: the high-temperature flue gas generated by the traditional smelting furnace is directly discharged, and the large amount of heat carried by the flue gas cannot be recovered and utilized; the raw materials are directly put into the cold furnace and need to rely on the electrode arc for continuous high-power heating, which takes a long time to heat up, consumes a lot of electricity, and the white fused alumina melting efficiency is low; the single-station filter plate of the melting furnace is prone to dust accumulation and blockage after long-term use, and the filtration efficiency continues to decline; conventional filtration devices do not have automatic station switching and pulse cleaning structures, and manual disassembly and cleaning of the filter screen during shutdown will interrupt the smelting process and significantly reduce the continuous operation time of the production line.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a melting and crystallizing white corundum smelting furnace, comprising:

[0008] The furnace frame has an upper port of the melting furnace flush with the opening of its top plate. A rotating platform is rotatably fitted onto the upper surface of the top plate of the furnace frame. A furnace cover is fixedly installed on the outer edge of the rotating platform. A front furnace body module is fixedly installed on the side of the outer edge of the rotating platform away from the furnace cover. The furnace cover is fitted onto the upper port of the melting furnace. A shell is fixedly installed in the middle of the rotating platform.

[0009] The bottom of the shell is fixedly connected to a dual-chamber dust collection module, which connects the bottom of the shell to the side wall of the furnace cover.

[0010] The shell has a turntable that is coaxially and rotatably fitted inside, and a filter plate is detachably and fixedly installed in the through mounting groove of the turntable by screws. A recycling pipe is fixedly connected between the top of the shell and the preheating module.

[0011] A box is fixedly installed on the outer wall of the shell, and an inflation mechanism is rotatably installed inside the box.

[0012] A fixed angle switching mechanism is fixedly installed on the top of the turntable.

[0013] Preferably, the bottom end of the melting furnace is fitted with a top limiting sleeve of the car seat, and the bottom of the furnace frame is fixedly installed with symmetrically distributed thrust cylinders. The vertical plate of the moving end of the thrust cylinder is fitted into the side wall mounting groove of the car seat to form a transmission structure. The top plate of the furnace frame is fixedly embedded with a main motor, and the output shaft of the main motor rotates through the furnace frame. The output shaft end of the main motor is fixedly installed on the side of the rotating platform away from the furnace cover. The electrode rods of the electrode frame are inserted into the three through holes at the top of the furnace cover to perform electric arc heating. The moving end of the lifting cylinder is fixedly installed on the top side wall of the electrode frame, and the lifting cylinders are symmetrically fixed and through the furnace frame, so that the lifting cylinder can drive the electrode frame to move.

[0014] Preferably, the dual-cavity dust collection module includes an extraction pipe fixedly embedded in the inner wall of the rotating platform. The top opening of the extraction pipe is fixedly installed through the bottom of the casing, and the middle opening of the extraction pipe is fixedly connected to the side wall of the furnace cover. The bottom opening of the extraction pipe is fixedly connected to the top of the sedimentation cylinder. The two ends of the middle section of the extraction pipe are arranged at different heights to facilitate particulate matter deposition. Corresponding filter plates are coaxially arranged between the top opening of the extraction pipe and the lower opening of the recovery pipe. Sedimentation cylinders are fixedly installed on both sides of the bottom protrusion of the rotating platform. Symmetrically distributed ash-discharging electric cylinders are fixedly installed at the top of the collecting cylinder and between the sedimentation cylinder and the collecting cylinder. Ash-discharging plates are fixedly installed on the bottom moving end face of the ash-discharging electric cylinders. The two ends of the ash-discharging plates are respectively inserted into the lower ports of the sedimentation cylinder and the collecting cylinder. The top of the side wall of the collecting cylinder is provided with ventilation filter holes. The top of the collecting cylinder is fixedly connected to the lower end of the collecting pipe. The collecting pipe is fixedly connected to the rotating platform. The upper port of the collecting pipe is fixedly connected to the bottom of the shell on the side away from the exhaust pipe, so that the ash-discharging electric cylinder can drive the ash-discharging plates to move.

[0015] Preferably, a fan for driving the circulation of hot air is rotatably installed in the middle of the recovery pipe. The fan blades are inside the recovery pipe, and the rotating shaft of the fan rotates through the recovery pipe and the housing. A drive motor is fixedly installed inside the housing, and a hexagonal protrusion on the output shaft of the drive motor fits into the bottom end of the rotating shaft of the fan to form a transmission structure. A large gear on the top of a reduction gear is meshed with the gear on the side of the output shaft of the drive motor. The reduction gear is rotatably embedded in the inner wall of the housing, so that the drive motor can drive the fan to rotate.

[0016] Preferably, the pre-furnace module includes a discharge pipe fixedly embedded in the rotating platform. The lower end of the discharge pipe is fitted to the upper surface of the top plate of the furnace frame to form a closed structure, and the lower end of the discharge pipe is located on the side of the upper end of the melting furnace. The upper end of the discharge pipe is fixedly connected to the discharge port of the preheating furnace, and the side wall of the preheating furnace is hollow to facilitate the flow of hot air. The inner side of the preheating furnace has heat exchange tubes evenly distributed from top to bottom, and both ends of the heat exchange tubes are fixedly connected to the inner wall of the preheating furnace. The preheating furnace is fixedly installed on the top of the rotating platform. An exhaust pipe is provided on the top of one side of the preheating furnace, and the lower end of a recovery pipe is fixedly connected to the bottom of one side of the preheating furnace, so that the hot air in the cavity of the side wall of the preheating furnace can enter the heat exchange tubes.

[0017] Preferably, a vertical accumulator is fixedly installed on the side wall of the housing, and the accumulator has a pressure resistance of 1.0 MPa and a working pressure range of 0.45-0.8 MPa. The top of the accumulator is fixedly connected to the bottom end of a pressure sensor. The upper part of the side wall of the accumulator is fixedly connected to the outlet of a one-way exhaust valve pipe. The bottom two sides of the accumulator are respectively fixedly connected to the inlets of a proportional solenoid valve pipe and an exhaust solenoid valve pipe. The outlet of the exhaust solenoid valve pipe is fixedly connected to the connecting pipe of the spray plate. The spray plate is detachably fixedly installed on the top of the housing by screws, and a corresponding filter plate is provided between the cleaning nozzle at the bottom of the spray plate and the upper port of the collection pipe. The two branch pipes of the proportional solenoid valve pipe are respectively fixedly connected to corresponding pressure cylinders, and the bottom of the pressure cylinder is fixedly installed on the top of the housing. The inner side of the pressure cylinder is slidably fitted with a lifting plug, so that the gas in the accumulator can enter the pressure cylinder through the proportional solenoid valve pipe.

[0018] Preferably, the inflation mechanism includes a rotating gear, the connecting shaft of which is rotatably embedded in the inner wall of the housing, and a small gear at the bottom of a reduction gear meshing with the side of the rotating gear. A cam is coaxially fixedly mounted on the bottom of the rotating gear. A horizontal transmission frame is slidably installed through the inner wall of the housing, and the end of the cam is attached to the inner wall of the transmission frame to form a reciprocating drive structure. The end of a pneumatic plug rod is fixedly mounted on the outer wall of the transmission frame away from the cam. A horizontal pneumatic cylinder is fixedly mounted on the external support of the housing. The plug of the pneumatic plug rod is inserted into the inside of the pneumatic cylinder, and the end of the pneumatic cylinder is fixedly connected to the outlet of a one-way inlet valve pipe and the inlet of a one-way exhaust valve pipe, so that the transmission frame can drive the pneumatic plug rod to move.

[0019] Preferably, the fixed angle switching mechanism includes a fixed sleeve, the bottom end of which is coaxially fixedly installed on the top of the housing, and the top of the inner wall of the fixed sleeve is rotatably fitted with a top protruding ring of a rotating rod. The bottom end of the rotating rod is coaxially fixedly connected to the upper surface of the turntable, and the rotating rod is rotatably fitted through the top of the housing. A counterweight outer cylinder and a rotating ring are slidably fitted on the outer side of the fixed sleeve. The outer wall of the rotating ring is rotatably embedded in the bottom inner wall of the counterweight outer cylinder. The top of the lifting plug rod is fixedly connected to the protrusions on both sides of the counterweight outer cylinder. A guide post of the top of a guide bracket is coaxially fitted on the top of the rotating rod, and the top of the counterweight outer cylinder is fitted on the outer side of the guide post of the guide bracket. The bottom of the guide bracket is fixedly installed on the top of the housing, so that the rotating rod can drive the turntable to rotate.

[0020] Preferably, the side wall of the fixed sleeve has a through guide opening, and the upper and lower sides of the guide opening are parallel and inclined to each other. A thrust rod is fitted to the bottom of the guide opening, and the end of the thrust rod is fixedly installed on the inner wall of the rotating ring. A parallel locking rod is provided directly above the thrust rod, and the end of the locking rod is fixedly installed through the upper part of the side wall of the counterweight outer cylinder. The top convex ring of the rotating rod has upper and lower insert plates that are equally distributed at angles fixedly installed on its upper and lower sides, respectively. The length of the lower insert plate is greater than the length of the upper insert plate. The diameter of the locking rod is equal to the diameter of the thrust rod. The upper insert plates are provided on both sides of the locking rod to form a locking structure. The top of the thrust rod faces the guide space between the lower insert plates. The movable angle of the thrust rod in the guide opening is 60°, so that the counterweight outer cylinder can drive the locking rod to move.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: This molten crystallization white fused alumina smelting furnace can effectively utilize the heat in high-temperature flue gas to preheat the white fused alumina raw material, thereby solving the pain points of high energy consumption and low heating efficiency of traditional equipment. Furthermore, the device is equipped with a pressure-accumulating multi-station automatic filter plate switching and cleaning structure, which can effectively reduce the risk of filter plate clogging, improve flue gas filtration efficiency, and reduce downtime for manual maintenance. The specific details are as follows:

[0022] 1. The pre-heater module includes a discharge pipe fixedly embedded in the rotating platform. The lower end of the discharge pipe is fitted to the upper surface of the furnace frame to form a closed structure. The lower end of the discharge pipe is located on the side of the upper end of the melting furnace. The upper end of the discharge pipe is fixedly connected to the discharge port of the preheating furnace. The side wall of the preheating furnace is hollow to facilitate the flow of hot gas. Heat exchange tubes are evenly distributed from top to bottom on the inner side of the preheating furnace. Both ends of the heat exchange tubes are fixedly connected to the inner wall of the preheating furnace. The preheating furnace is fixedly installed on the top of the rotating platform. An exhaust pipe is set on the top of one side of the preheating furnace. The lower end of a recovery pipe is fixedly connected to the bottom of one side of the preheating furnace. The high-temperature dusty flue gas generated by the melting furnace is filtered, and the pure high-temperature gas flow is introduced into the hollow cavity of the preheating furnace and the internal heat exchange tubes through the recovery pipe. The waste heat of the flue gas is used to preheat the alumina raw material to be added in the preheating furnace in advance. There is no need for continuous high-power cold material heating by the electrode frame arc, which effectively shortens the melting time of the raw material and reduces the power consumption.

[0023] 2. The fixed angle switching mechanism includes a fixed sleeve, the bottom end of which is coaxially fixedly installed on the top of the housing. The bottom end of the rotating rod is coaxially fixedly connected to the upper surface of the turntable. A counterweight outer cylinder and a rotating ring are slidably mounted on the outer side of the fixed sleeve. The outer wall of the rotating ring is rotatably embedded in the bottom inner wall of the counterweight outer cylinder. A through guide opening is formed on the side wall of the fixed sleeve. The upper and lower sides of the guide opening are parallel and inclined to each other. A thrust rod is fitted at the bottom of the guide opening. The end of the thrust rod is fixedly installed on the inner wall of the rotating ring. A parallel locking rod is set directly above the thrust rod. The end of the locking rod is fixedly installed through the upper part of the side wall of the counterweight outer cylinder. Upper and lower insert plates with equal angles are fixedly installed on the upper and lower sides of the top protruding ring of the rotating rod. The length of the lower insert plate is greater than that of the upper insert plate. The length of the locking rod is equal to the diameter of the push rod. Upper insert plates are set on both sides of the locking rod to form a locking structure. The top of the push rod faces the guide space between the lower insert plates. The push rod can move at a 60° angle in the guide port. The lifting plug rod in the pressure cylinder pushes the outer cylinder of the counterweight to rise and fall, releasing the locking rod from locking the upper insert plate. The push rod pushes the lower insert plate, causing the rotating rod to rotate precisely 60°. The turntable switches the filter plate position synchronously. The guide port and insert plate limiting structure limit the rotation angle. After each position change, the filter plate can be precisely aligned with the flue gas channel and the cleaning nozzle, avoiding the defects of filtration failure and incomplete cleaning caused by the angle deviation of ordinary rotating structures. Multiple filter plates are rotated in a cycle. When a single filter screen is blocked, it automatically switches to a backup position, which greatly extends the continuous operation time. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall external structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the rotating platform mounting structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the preheating furnace installation structure of the present invention;

[0027] Figure 4 This is a schematic diagram of the heat exchanger tube installation structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the deposition cylinder installation structure of the present invention;

[0029] Figure 6 This is a schematic diagram of the air extraction pipe installation structure of the present invention;

[0030] Figure 7 This is a schematic diagram of the housing mounting structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the pressure cylinder mounting structure of the present invention;

[0032] Figure 9 This is a schematic diagram of the filter plate installation structure of the present invention;

[0033] Figure 10 This is a schematic diagram of the installation structure of the recycling pipe of the present invention;

[0034] Figure 11 This is a schematic diagram of the accumulator cylinder installation structure of the present invention;

[0035] Figure 12 This is a schematic diagram of the mounting structure of the fixing sleeve of the present invention;

[0036] Figure 13 This is a schematic diagram of the rotating ring mounting structure of the present invention;

[0037] Figure 14 This is a schematic diagram of the thrust rod installation structure of the present invention;

[0038] Figure 15 This is a schematic diagram of the pneumatic plug rod installation structure of the present invention.

[0039] In the diagram: 1. Furnace frame; 2. Thrust cylinder; 3. Car seat; 4. Melting furnace; 5. Electrode frame; 6. Lifting cylinder; 7. Rotary table; 8. Furnace cover; 9. Main motor; 10. Evacuation pipe; 11. Sedimentation cylinder; 12. Ash discharge plate; 13. Ash discharge cylinder; 14. Collection cylinder; 15. Collection pipe; 16. Shell; 17. Turntable; 18. Filter plate; 19. Recovery pipe; 20. Preheating furnace; 21. Heat exchange tube; 22. Discharge pipe; 23. Fan component; 24. Drive motor; 25. Housing; 26. Reduction gear; 27. Gas charging mechanism; 2701. Rotating gear; 2702. Cam; 270 3. Transmission frame; 2704. Pneumatic cylinder; 2705. Pneumatic piston rod; 2706. One-way inlet valve pipe; 28. One-way exhaust valve pipe; 29. ​​Accumulator cylinder; 30. Pneumatic sensor; 31. Proportional solenoid valve pipe; 32. Exhaust solenoid valve pipe; 33. Spray plate; 34. Pressure cylinder; 35. Lifting piston rod; 36. Fixed angle switching mechanism; 3601. Fixing sleeve; 3602. Guide port; 3603. Counterweight outer cylinder; 3604. Rotating ring; 3605. Thrust rod; 3606. Locking rod; 3607. Rotating rod; 3608. Lower insert plate; 3609. Upper insert plate; 37. Guide bracket. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Please see Figures 1-15 The present invention provides a technical solution: a melting and crystallizing white corundum smelting furnace, comprising:

[0042] The furnace frame 1 has an upper port of the melting furnace 4 flush with the opening of the top plate of the furnace frame 1. A rotating platform 7 is rotatably attached to the upper surface of the top plate of the furnace frame 1. A furnace cover 8 is fixedly installed at the outer edge of the rotating platform 7. A front furnace body module is fixedly installed on the side of the outer edge of the rotating platform 7 away from the furnace cover 8. The furnace cover 8 is attached to the upper port of the melting furnace 4. A shell cover 16 is fixedly installed in the middle of the rotating platform 7.

[0043] A dual-chamber dust collection module is fixedly connected to the bottom of the shell cover 16, and the dual-chamber dust collection module connects the bottom of the shell cover 16 and the side wall of the furnace cover 8.

[0044] Inside the housing 16, a turntable 17 is coaxially and rotatably mounted, and a filter plate 18 is detachably and fixedly mounted in the through mounting groove of the turntable 17 by screws. A recovery pipe 19 is fixedly connected between the top of the housing 16 and the preheating module.

[0045] A box 25 is fixedly installed on the outer wall of the shell 16, and an inflation mechanism 27 is rotatably installed inside the box 25;

[0046] A fixed angle switching mechanism 36 is fixedly installed on the top of the turntable 17.

[0047] A fan component 23 for driving the circulation of hot air is rotatably mounted in the middle of the recovery pipe 19. The fan blades of the fan component 23 are located inside the recovery pipe 19, and the rotating shaft of the fan component 23 rotates through the recovery pipe 19 and the housing 25. A drive motor 24 is fixedly installed inside the housing 25, and a hexagonal protrusion on the output shaft of the drive motor 24 is fitted and inserted into the bottom end of the rotating shaft of the fan component 23 to form a transmission structure. Furthermore, a large gear on the top of a reduction gear 26 is meshed with the gear on the side of the output shaft of the drive motor 24. The reduction gear 26 is rotatably embedded in the inner wall of the housing 25, enabling the fan component 23 to drive the circulation of hot air. The hot gas in the dynamic recovery pipe 19 flows into the cavity of the side wall of the preheating furnace 20. The front furnace module includes a discharge pipe 22 fixedly embedded in the rotating table 7. The lower end of the discharge pipe 22 is attached to the upper surface of the top plate of the furnace frame 1 to form a closed structure. The lower end of the discharge pipe 22 is located on the side of the upper end of the melting furnace 4. The upper end of the discharge pipe 22 is fixedly connected to the discharge port of the preheating furnace 20. The side wall of the preheating furnace 20 is hollow to facilitate the flow of hot gas. Heat exchange pipes 21 are evenly distributed from top to bottom on the inner side of the preheating furnace 20. Both ends of the heat exchange pipes 21 are fixedly connected to the preheating furnace. On the inner wall of the preheating furnace 20, the preheating furnace 20 is fixedly installed on the top of the rotating platform 7. An exhaust pipe is provided on the top side of the preheating furnace 20, and the bottom side of the preheating furnace 20 is fixedly connected to the lower port of the recovery pipe 19. The hot gas in the cavity of the preheating furnace 20 can flow into the heat exchange tube 21. At this time, the white corundum raw material in the preheating furnace 20 can be preheated. The bottom end of the melting furnace 4 is fitted with the top limiting sleeve of the car seat 3. The bottom of the furnace frame 1 is fixedly installed with symmetrically distributed thrust cylinders 2. The vertical plate of the moving end of the thrust cylinder 2 is fitted into the mounting groove on the side wall of the car seat 3 to form a transmission structure. The top plate of the furnace frame 1 is fixedly installed with... A main motor 9 is fixedly installed, and the output shaft of the main motor 9 rotates through the furnace frame 1. The output shaft end of the main motor 9 is fixedly installed on the side of the rotating table 7 away from the furnace cover 8. Electrode rods of electrode frames 5 are inserted into the three through holes at the top of the furnace cover 8 to perform electric arc heating. The moving end of the lifting cylinder 6 is fixedly installed on the top side wall of the electrode frame 5. The lifting cylinder 6 is symmetrically fixed and installed through the furnace frame 1. The lifting cylinder 6 can drive the electrode frame 5 to move out of the furnace cover 8. The rotating table 7 drives the lower port of the discharge pipe 22 at the bottom of the preheating furnace 20 to move to the upper port of the melting furnace 4 for feeding.

[0048] The dual-chamber dust collection module includes an extraction pipe 10 fixedly embedded in the inner wall of the rotating platform 7. The top opening of the extraction pipe 10 is fixedly installed through the bottom of the shell 16, and the middle opening of the extraction pipe 10 is fixedly connected to the side wall of the furnace cover 8. The bottom opening of the extraction pipe 10 is fixedly connected to the top of the sedimentation cylinder 11. The two ends of the middle section of the extraction pipe 10 are set at different heights to facilitate particulate matter deposition. A corresponding filter plate 18 is coaxially arranged between the top opening of the extraction pipe 10 and the lower opening of the recovery pipe 19. The tops of the sedimentation cylinder 11 and the collection cylinder 14 are fixedly installed on both sides of the bottom protrusion of the rotating platform 7, and the sedimentation cylinder 11 and the collection cylinder 14 are fixedly connected. The ash discharge cylinders 13 are symmetrically distributed and are fixedly installed on the bottom moving end face of the ash discharge cylinders 13. The two ends of the ash discharge cylinders 12 are respectively attached to the lower ports of the sedimentation cylinder 11 and the collection cylinder 14. The top of the side wall of the collection cylinder 14 is provided with ventilation filter holes, and the bottom of the collection pipe 15 is fixedly connected to the top of the collection cylinder 14. The collection pipe 15 is fixedly connected to the rotating table 7, and the upper port of the collection pipe 15 is fixedly connected to the bottom of the shell 16 away from the exhaust pipe 10, so that the flue gas particles intercepted by the filter plate 18 can fall into the sedimentation cylinder 11, and the flue gas particles in the collection pipe 15 can fall into the collection cylinder 14.

[0049] The inflation mechanism 27 includes a rotating gear 2701. The connecting shaft of the rotating gear 2701 is rotatably embedded in the inner wall of the housing 25. A small gear at the bottom of a reduction gear 26 is meshed with the side of the rotating gear 2701. A cam 2702 is coaxially fixedly mounted on the bottom of the rotating gear 2701. A horizontal transmission frame 2703 is slidably passed through the inner wall of the housing 25. The end of the cam 2702 is attached to the inner wall of the transmission frame 2703 to form a reciprocating drive structure. An air pressure plug is fixedly mounted on the outer wall of the transmission frame 2703 away from the cam 2702. At the end of the rod 2705, a horizontal pneumatic cylinder 2704 is fixedly installed on the external support of the housing 25. The plug of the pneumatic plug rod 2705 is inserted into the pneumatic cylinder 2704, and the end of the pneumatic cylinder 2704 is fixedly connected to the outlet of the one-way inlet valve pipe 2706 and the inlet of the one-way exhaust valve pipe 28, so that the drive motor 24 can drive the rotating gear 2701 and the cam 2702 to rotate through the reduction gear 26. At this time, the cam 2702 will drive the transmission frame 2703 and the pneumatic plug rod 2705 to reciprocate. The pneumatic plug rod 2705 will... The gas in the pressure cylinder 2704 is fed into the pressure accumulator 29. A vertical pressure accumulator 29 is fixedly installed on the side wall of the housing 25. The pressure resistance of the pressure accumulator 29 is 1.0 MPa, and its working pressure range is 0.45-0.8 MPa. The top of the pressure accumulator 29 is fixedly connected to the bottom end of the pressure sensor 30. The upper part of the side wall of the pressure accumulator 29 is fixedly connected to the outlet of the one-way exhaust valve pipe 28. The bottom sides of the pressure accumulator 29 are respectively fixedly connected to the inlets of the proportional solenoid valve pipe 31 and the exhaust solenoid valve pipe 32. The exhaust solenoid valve pipe 32... The outlet and the nozzle 33 are connected by a fixed pipe. The nozzle 33 is detachably fixed to the top of the housing 16 by screws. A corresponding filter plate 18 is provided between the cleaning nozzle at the bottom of the nozzle 33 and the upper port of the collection pipe 15. The two branch ports of the proportional solenoid valve pipe 31 are respectively fixedly connected to the corresponding pressure cylinders 34. The bottom of the pressure cylinder 34 is fixedly installed on the top of the housing 16. The inner side of the pressure cylinder 34 is slidably fitted with the plug of the lifting plug rod 35. The gas in the accumulator 29 can enter the pressure cylinder 34 through the proportional solenoid valve pipe 31.

[0050] The fixed angle switching mechanism 36 includes a fixed sleeve 3601. The bottom end of the fixed sleeve 3601 is coaxially fixedly installed on the top of the housing 16. The top of the inner wall of the fixed sleeve 3601 is rotatably fitted with the top protruding ring of the rotating rod 3607. The bottom end of the rotating rod 3607 is coaxially fixedly connected to the upper surface of the turntable 17. The rotating rod 3607 is rotatably fitted through the top of the housing 16. The outer side of the fixed sleeve 3601 is slidably fitted with a counterweight outer cylinder 3603 and a rotating ring 3604. The outer wall of the rotating ring 3604 is rotatably embedded in the counterweight outer cylinder 3603. On the bottom inner wall, the top of the lifting piston rod 35 is fixedly connected to the protrusions on both sides of the outer counterweight cylinder 3603. The top of the rotating rod 3607 is coaxially fitted with the guide post of the top of the guide bracket 37, and the top of the outer counterweight cylinder 3603 is sleeved on the outside of the guide post of the guide bracket 37. The bottom of the guide bracket 37 is fixedly installed on the top of the housing 16, so that the lifting piston rod 35 can drive the rotating ring 3604 to move upward through the outer counterweight cylinder 3603. The side wall of the fixed sleeve 3601 has a through guide opening 3602, and the guide opening 3602... The top and bottom sides of the guide 3602 are arranged parallel and inclined to each other. A thrust rod 3605 is attached to the bottom of the guide port 3602, and the end of the thrust rod 3605 is fixedly installed on the inner wall of the rotating ring 3604. A parallel locking rod 3606 is arranged directly above the thrust rod 3605. The end of the locking rod 3606 is fixedly installed through the upper side wall of the counterweight outer cylinder 3603. The top convex ring of the rotating rod 3607 has an upper insert plate 3609 and a lower insert plate 3608 that are equally angled and fixedly installed on its upper and lower sides, respectively. The length of the lower insert plate 3608 is greater than that of the upper insert plate 3609. The length of plate 3609, the diameter of locking rod 3606, and the diameter of thrust rod 3605 are equal. Upper insert plates 3609 are provided on both sides of locking rod 3606 to form a locking structure. The top of thrust rod 3605 faces the guide space between lower insert plates 3608. The movable angle of thrust rod 3605 in guide port 3602 is 60°. Locking rod 3606 at the top of counterweight outer cylinder 3603 first disengages from upper insert plate 3609 to release the lock. Then, thrust rod 3605 drives rotating rod 3607 to rotate through lower insert plate 3608.

[0051] Working principle: When using this molten crystallization white corundum smelting furnace, first refer to... Figures 1-15The electric arc generated by the electrode rod on the electrode holder 5 heats and melts the white corundum raw material in the melting furnace 4, generating high-temperature flue gas. The device controls the start of the drive motor 24, and the output shaft of the drive motor 24 drives the fan 23 to rotate in the recovery pipe 19, generating a suction negative pressure in the recovery pipe 19. At this time, the high-temperature flue gas in the melting furnace 4 flows through the exhaust pipe 10 to the filter plate 18 in the working position inside the shell 16. The impurities and particles trapped by the filter plate 18 will pass through the filter plate 18. The gas settles into the deposition cylinder 11 through the lower port of the exhaust pipe 10. The pure high-temperature gas flow filtered by the filter plate 18 will enter the recovery pipe 19, and the high-temperature gas flow in the recovery pipe 19 will enter the preheating furnace 20. The hollow side wall of the preheating furnace 20 and the heat exchange tube 21 will be filled with gas flow, so that the white fused alumina raw material in the preheating furnace 20 is heated, thereby achieving preheating before subsequent feeding, reducing the heating energy consumption of the electrode frame 5, and increasing the melting speed of the white fused alumina raw material. An exhaust pipe is provided on the side wall of the preheating furnace 20.

[0052] During the above process, the proportional solenoid valve pipe 31 and the exhaust solenoid valve pipe 32 are in the closed state. The gear on the output shaft of the drive motor 24 drives the rotating gear 2701 to rotate through the reduction gear 26. The cam 2702 at the bottom of the rotating gear 2701 drives the pneumatic piston rod 2705 to reciprocate through the transmission frame 2703. The pneumatic piston rod 2705 moves synchronously inside the pneumatic cylinder 2704. At this time, the outside gas enters the pneumatic cylinder 2704 through the one-way intake valve pipe 2706, and the gas in the pneumatic cylinder 2704 enters the accumulator 29 through the one-way exhaust valve pipe 28. At this time, the air pressure in the accumulator 29 will slowly increase. When the air pressure sensor 30 detects the accumulator pressure... When the gas pressure in cylinder 29 reaches 0.45-0.5 MPa, the device controls the proportional solenoid valve tube 31 to slowly open. At this time, the high-pressure gas in the accumulator cylinder 29 can slowly enter the pressure cylinder 34 through the proportional solenoid valve tube 31. The lifting plug rod 35 in the pressure cylinder 34 can push the outer counterweight cylinder 3603 to move upward. At this time, the outer counterweight cylinder 3603 will drive the rotating ring 3604 to move synchronously. The locking rod 3606 at the top of the outer counterweight cylinder 3603 will first leave the upper insert plate 3609 to release the locking relationship. The rotating ring 3604 will drive the thrust rod 3605 to enter between the two lower insert plates 3608. When the thrust rod 3605 presses against the inclined surface at the top of the guide port 3602... The thrust rod 3605 will drive the rotating ring 3604 and the lower insert plate 3608 to rotate 60°. At this time, the lower insert plate 3608 will drive the rotating rod 3607 and the upper insert plate 3609 to rotate synchronously. The rotating rod 3607 will drive the turntable 17 to rotate 60°. At this time, the filter plates 18 on the turntable 17 will rotate synchronously, thereby realizing the switching of the six filter plates 18. When the air pressure in the accumulator 29 reaches 0.75-0.8MPa, the exhaust solenoid valve pipe 32 will periodically open and close. At this time, the nozzle at the bottom of the spray plate 33 will generate pulse airflow, using high-speed airflow to backwash and clean the filter plates 18. At this time, the impurities in the filter plates 18 will enter through the collection pipe 15. In the collecting cylinder 14, when the air pressure in the accumulator cylinder 29 reaches below 0.3MPa, the exhaust solenoid valve pipe 32 is fully opened, and the exhaust solenoid valve pipe 32 continuously discharges the high-pressure gas in the accumulator cylinder 29. During this process, the air pressure in the pressure cylinder 34 will continue to decrease. At this time, the counterweight outer cylinder 3603 and the lifting plug rod 35 will move downward. The counterweight outer cylinder 3603 drives the rotating ring 3604 to move downward through its weight. The rotating ring 3604 will drive the thrust rod 3605 to reset. When the air pressure in the accumulator cylinder 29 reaches below the set value of 0.1MPa, the proportional solenoid valve pipe 31 and the exhaust solenoid valve pipe 32 are in the closed state to facilitate the entry into the next cycle. The pressure is gauge pressure.

[0053] After the white fused alumina raw material in the melting furnace 4 is priced, the lifting cylinder 6 lifts the electrode frame 5 out of the furnace cover 8. Then, the thrust cylinder 2 pushes the carriage 3 and the melting furnace 4 out of the furnace frame 1. The melting furnace 4 is then hoisted by external equipment. The ash discharge cylinder 13 pushes the ash discharge plate 12 downward, allowing the particulate dust in the sedimentation cylinder 11 and the collection cylinder 14 to be discharged. The ash discharge cylinder 13 is then reset. After that, the empty melting furnace 4 is placed into the carriage 3. The thrust cylinder 2 drives the melting furnace 4 to reset. Then, the main motor 9 drives the rotating table 7 to rotate, so that the rotating table 7 drives the lower end of the discharge pipe 22 into the upper part of the melting furnace 4. The rotating table 7 swings slightly. At this time, the white fused alumina raw material preheated in the preheating furnace 20 will enter the melting furnace 4 through the inclined discharge pipe 22. Finally, the rotating table 7 drives the discharge pipe 22 and the furnace cover 8 to reset.

[0054] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0055] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0056] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A melting and crystallizing white corundum smelting furnace, comprising: The furnace frame (1) is characterized in that: the upper port of the melting furnace (4) is flush with the opening of the top plate of the furnace frame (1); a rotating platform (7) is rotatably attached to the upper surface of the top plate of the furnace frame (1); a furnace cover (8) is fixedly installed at the outer edge of the rotating platform (7); a front furnace body module is fixedly installed on the side of the outer edge of the rotating platform (7) away from the furnace cover (8); the furnace cover (8) is attached to the upper port of the melting furnace (4); and a shell cover (16) is fixedly installed in the middle of the rotating platform (7). The bottom of the shell (16) is fixedly connected to a dual-chamber dust collection module, which connects the bottom of the shell (16) and the side wall of the furnace cover (8). The inside of the shell (16) is coaxially and rotatably fitted with a turntable (17), and a filter plate (18) is detachably and fixedly installed in the through mounting groove of the turntable (17) by screws. A recycling pipe (19) is fixedly connected between the top of the shell (16) and the preheating module. A box (25) is fixedly installed on the outer wall of the shell (16), and an inflation mechanism (27) is rotatably installed inside the box (25). A fixed angle switching mechanism (36) is fixedly installed on the top of the turntable (17).

2. The molten crystallization white corundum smelting furnace according to claim 1, characterized in that: The bottom end of the melting furnace (4) is fitted with the top limiting sleeve of the seat (3). The bottom of the furnace frame (1) is fixedly installed with symmetrically distributed thrust cylinders (2). The vertical plate of the moving end of the thrust cylinder (2) is fitted into the side wall mounting groove of the seat (3) to form a transmission structure. The top plate of the furnace frame (1) is fixedly embedded with the main motor (9). The output shaft of the main motor (9) rotates through the furnace frame (1). The output shaft end of the main motor (9) is fixedly installed on the side of the rotating table (7) away from the furnace cover (8). The electrode rods of the electrode frame (5) are inserted into the three through holes at the top of the furnace cover (8) to play the role of electric arc heating. The moving end of the lifting cylinder (6) is fixedly installed on the top side wall of the electrode frame (5). The lifting cylinders (6) are symmetrically fixedly installed through the furnace frame (1).

3. The molten crystallization white corundum smelting furnace according to claim 1, characterized in that: The dual-cavity dust collection module includes an extraction pipe (10) fixedly embedded in the inner wall of the rotating platform (7). The top opening of the extraction pipe (10) is fixedly installed through the bottom of the shell (16), and the middle opening of the extraction pipe (10) is fixedly connected to the side wall of the furnace cover (8). The bottom opening of the extraction pipe (10) is fixedly connected to the top of the sedimentation cylinder (11). The two ends of the middle section of the extraction pipe (10) are set at different heights to facilitate particle deposition. A corresponding filter plate (18) is coaxially arranged between the top opening of the extraction pipe (10) and the lower port of the recovery pipe (19). The sedimentation cylinder (11) and the recovery cylinder (19) are fixedly installed on both sides of the bottom protrusion of the rotating platform (7). At the top of the collecting cylinder (14), and between the sedimentation cylinder (11) and the collecting cylinder (14), symmetrically distributed ash discharge cylinders (13) are fixedly installed, and a ash discharge plate (12) is fixedly installed on the bottom moving end face of the ash discharge cylinder (13). The two ends of the ash discharge plate (12) are respectively attached to the lower ports of the sedimentation cylinder (11) and the collecting cylinder (14). The top of the side wall of the collecting cylinder (14) is provided with a ventilation filter hole, and the top of the collecting cylinder (14) is fixedly connected to the lower end of the collecting pipe (15). The collecting pipe (15) is fixedly connected to the rotating table (7), and the upper port of the collecting pipe (15) is fixedly connected to the bottom of the shell (16) away from the exhaust pipe (10).

4. The molten crystallization white corundum smelting furnace according to claim 1, characterized in that: A fan component (23) for driving the flow of hot air is rotatably installed in the middle of the recovery pipe (19). The fan blades of the fan component (23) are inside the recovery pipe (19), and the rotating shaft of the fan component (23) is rotatably connected through the recovery pipe (19) and the housing (25). A drive motor (24) is fixedly installed inside the housing (25), and a hexagonal protrusion on the output shaft of the drive motor (24) is fitted and inserted into the bottom end of the rotating shaft of the fan component (23) to form a transmission structure. A large gear on the top of a reduction gear (26) is meshed on the side of the gear on the output shaft of the drive motor (24), and the reduction gear (26) is rotatably embedded in the inner wall of the housing (25).

5. The molten crystallization white corundum smelting furnace according to claim 1, characterized in that: The pre-furnace module includes a discharge pipe (22) fixedly embedded in the rotating table (7). The lower end of the discharge pipe (22) is attached to the upper surface of the top plate of the furnace frame (1) to form a closed structure. The lower end of the discharge pipe (22) is located on the side of the upper end of the melting furnace (4). The upper end of the discharge pipe (22) is fixedly connected to the outlet of the preheating furnace (20). The side wall of the preheating furnace (20) is hollow to facilitate the flow of hot air. The inner side of the preheating furnace (20) is provided with heat exchange pipes (21) evenly distributed from top to bottom. Both ends of the heat exchange pipes (21) are fixedly connected to the inner wall of the preheating furnace (20). The preheating furnace (20) is fixedly installed on the top of the rotating table (7). An exhaust pipe is provided on the top of one side of the preheating furnace (20). The lower end of the recovery pipe (19) is fixedly connected to the bottom of one side of the preheating furnace (20).

6. The molten crystallization white corundum smelting furnace according to claim 1, characterized in that: A vertical accumulator cylinder (29) is fixedly installed on the side wall of the housing (25), and the pressure resistance of the accumulator cylinder (29) is 1.0 MPa, and the working pressure range of the accumulator cylinder (29) is 0.45-0.8 MPa. The top of the accumulator cylinder (29) is fixedly connected to the bottom end of the pressure sensor (30), and the upper part of the side wall of the accumulator cylinder (29) is fixedly connected to the outlet of the one-way exhaust valve pipe (28). The bottom sides of the accumulator cylinder (29) are respectively fixedly connected to the inlets of the proportional solenoid valve pipe (31) and the exhaust solenoid valve pipe (32). The outlet of the valve pipe (32) and the connecting pipe of the spray plate (33) are fixedly connected. The spray plate (33) is detachably fixedly installed on the top of the housing (16) by screws. A corresponding filter plate (18) is provided between the cleaning nozzle at the bottom of the spray plate (33) and the upper port of the collection pipe (15). The two branch ports of the proportional solenoid valve pipe (31) are respectively fixedly connected to the corresponding pressure cylinders (34). The bottom of the pressure cylinder (34) is fixedly installed on the top of the housing (16). The inner side of the pressure cylinder (34) is slidably fitted with the plug of the lifting plug rod (35).

7. The molten crystallization white corundum smelting furnace according to claim 1, characterized in that: The inflation mechanism (27) includes a rotating gear (2701), the connecting shaft of which is rotatably embedded in the inner wall of the housing (25), and a small gear at the bottom of a reduction gear (26) meshing with the side of the rotating gear (2701). A cam (2702) is coaxially fixedly mounted on the bottom of the rotating gear (2701). A horizontal transmission frame (2703) is slidably passed through the inner wall of the housing (25), and a cam (2702) is fitted onto the inner wall of the transmission frame (2703). The end of the transmission frame (2703) forms a reciprocating drive structure. The end of the rod of the pneumatic plug rod (2705) is fixedly installed on the outer wall of the transmission frame (2703) away from the cam (2702). A horizontal pneumatic cylinder (2704) is fixedly installed on the external bracket of the housing (25). The plug of the pneumatic plug rod (2705) is inserted into the inside of the pneumatic cylinder (2704), and the end of the pneumatic cylinder (2704) is fixedly connected to the outlet of the one-way inlet valve pipe (2706) and the inlet of the one-way exhaust valve pipe (28).

8. The molten crystallization white corundum smelting furnace according to claim 1, characterized in that: The fixed angle switching mechanism (36) includes a fixed sleeve (3601). The bottom end of the fixed sleeve (3601) is coaxially fixedly installed on the top of the housing (16). The top of the inner wall of the fixed sleeve (3601) is rotatably fitted with the top protruding ring of the rotating rod (3607). The bottom end of the rotating rod (3607) is coaxially fixedly connected to the upper surface of the turntable (17). The rotating rod (3607) is rotatably fitted through the top of the housing (16). The outer side of the fixed sleeve (3601) is slidably fitted with a counterweight outer cylinder (36). 03) and the rotating ring (3604), the outer wall of the rotating ring (3604) is rotatably embedded on the bottom inner wall of the counterweight outer cylinder (3603), the top of the lifting plug rod (35) is fixedly connected to the protrusions on both sides of the counterweight outer cylinder (3603), the top of the rotating rod (3607) is coaxially fitted with the guide post of the top of the guide bracket (37), and the top of the counterweight outer cylinder (3603) is sleeved on the outside of the guide post of the guide bracket (37), and the bottom of the guide bracket (37) is fixedly installed on the top of the shell (16).

9. The molten crystallization white corundum smelting furnace according to claim 8, characterized in that: The fixed sleeve (3601) has a through guide opening (3602) on its side wall, and the upper and lower sides of the guide opening (3602) are parallel and inclined to each other. A thrust rod (3605) is attached to the bottom of the guide opening (3602), and the end of the thrust rod (3605) is fixedly installed on the inner wall of the rotating ring (3604). A parallel locking rod (3606) is provided directly above the thrust rod (3605), and the end of the locking rod (3606) is fixedly installed through the upper part of the side wall of the counterweight outer cylinder (3603). The top of the rotating rod (3607) The upper and lower insert plates (3609) and lower insert plates (3608) are fixedly installed on the upper and lower surfaces of the convex ring, respectively, with the lower insert plate (3608) being longer than the upper insert plate (3609). The diameter of the locking rod (3606) is equal to the diameter of the push rod (3605). The upper insert plates (3609) are provided on both sides of the locking rod (3606) to form a locking structure. The top of the push rod (3605) faces the guide space between the lower insert plates (3608). The movable angle of the push rod (3605) within the guide opening (3602) is 60°.

Images