Electromagnetic induction heated calcination rotary kiln device

Abstract

The application discloses a calcination rotary kiln device of electromagnetic induction heating, which comprises a base, the upper end of the base is provided with a kiln body, the upper end of the base is fixedly connected with two fixing seats, the kiln body is rotatably connected with the fixing seats through penetrating the fixing seats, a plurality of hard scattering assemblies and soft scattering assemblies are arranged in the kiln body, the left region of the kiln body is a preheating zone, the right region of the kiln body is a high-temperature zone, the hard scattering assemblies are arranged in the high-temperature zone, and the soft scattering assemblies are arranged in the preheating zone. The application solves the problems in the prior art by means of the differential scattering design in different regions, the pure mechanical self-driven reciprocating mechanism, the fully-closed anti-stuck slide rail structure and the forced synchronous rotating support system, and the operation reliability of the equipment, the calcination efficiency and the product quality are improved.

Description

Technical Field

[0001] This invention relates to the field of rotary kiln technology for calcination, and more particularly to a rotary kiln device for calcination using electromagnetic induction heating. Background Technology

[0002] Electromagnetic induction heating rotary kilns are advanced calcining equipment that utilizes the principle of electromagnetic induction to heat the kiln body non-contactly. They offer significant advantages such as rapid heating, high thermal efficiency, high temperature control precision, no open flame, and environmental friendliness. They are widely used in the calcination, sintering, drying, and roasting processes of high-end materials such as lithium battery cathode and anode materials, precision ceramic powders, metallurgical mineral powders, chemical catalysts, and rare earth materials. Their basic working principle is as follows: An alternating current is passed through an electromagnetic coil surrounding the outer wall of the kiln, generating an alternating magnetic field. This causes the metal kiln body to generate eddy currents and heat up, which is then transferred to the materials inside the kiln through heat conduction. Simultaneously, the kiln body slowly rotates around its own axis, causing the internal materials to continuously tumble, mix, and move axially, achieving continuous and uniform calcination.

[0003] However, existing electromagnetic induction heating rotary kilns still have the following technical shortcomings that urgently need to be addressed in practical industrial applications: 1. The single-structure dispersing method cannot adapt to the material characteristics of different calcination stages. The calcination process of materials in a rotary kiln is divided into three stages: preheating, high-temperature calcination, and cooling. The physical properties of materials vary greatly at different stages: the material in the preheating zone has a high moisture content and is prone to forming loose soft lumps, requiring a gentle dispersing method to avoid excessive crushing and the generation of a large amount of fine powder that will affect subsequent processes; the material in the high-temperature calcination zone undergoes a solid-phase reaction and is prone to forming hard sintered lumps, requiring a strong dispersing method to break them up. Most existing technologies use a uniform type of lifting plate or dispersing rod, which is either all rigid structures leading to excessive crushing of materials in the preheating zone, or all flexible structures that cannot effectively break up hard lumps in the high-temperature zone, ultimately resulting in uneven product particle size, incomplete calcination, and low yield.

[0004] 2. Adjustable disintegration structures are complex to drive, have poor reliability, and consume a lot of energy. To solve the problem of non-adjustable disintegration strength, some existing technologies use external independent drive mechanisms (such as motors, hydraulic cylinders, and pneumatic cylinders) to drive the movement of the internal disintegration structure. However, such solutions have drawbacks: First, they add an extra power source and electrical control system, significantly increasing equipment costs and operating energy consumption; second, under harsh working conditions such as high temperature, high dust, and strong electromagnetic interference, the electrical control system and drive components are easily damaged, resulting in a high failure rate, frequent maintenance, and seriously affecting production continuity.

[0005] 3. Poor material turning and conveying effect, resulting in heating blind spots. Traditional lifting plates can only lift and scatter materials along the kiln wall, failing to effectively disturb the material layer. This leads to heating blind spots where materials accumulate, resulting in uneven heating and poor calcination consistency. Furthermore, the residence time of materials in the kiln is difficult to control precisely, causing some materials to be discharged before full calcination, affecting product quality.

[0006] Therefore, it is necessary to design a rotary kiln device for calcination with electromagnetic induction heating to solve the above problems. Summary of the Invention

[0007] The purpose of this invention is to address the shortcomings of existing technologies by proposing an electromagnetic induction heating rotary kiln device. This invention systematically solves the problems of existing technologies through a zoned differentiated dispersing design, a purely mechanical self-driven reciprocating mechanism, a fully enclosed anti-jamming slide rail structure, and a forced synchronous rotation support system, thereby improving the operational reliability, calcination efficiency, and product quality of the equipment.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: A rotary kiln device for calcination using electromagnetic induction heating includes a base, with a kiln body mounted on the upper end of the base. Two fixed seats are fixedly connected to the upper end of the base, and the kiln body has corresponding fixed seats passing through and rotatably connected to both ends. The kiln body contains multiple hard dispersing components and soft dispersing components. The left side of the kiln body is a preheating zone, and the right side is a high-temperature zone. The hard dispersing components are located in the high-temperature zone, and the soft dispersing components are located in the preheating zone. Each hard dispersing component includes a central shaft, a second fixed ring, multiple enclosed slide rail assemblies, multiple round rods, two second positioning rings, and a second rotating ring. The second fixed ring is fixedly connected to the kiln body. On the inner wall, multiple closed slide rail assembly arrays are fixedly connected to the second fixed ring. One end of multiple round rods is hinged to the second rotating ring, and the other end is hinged to the closed slide rail assembly. During the reciprocating movement of the central shaft, the multiple round rods are in a reciprocating swing state, which disperses the material raised in the kiln. Two second positioning rings are fixedly connected to the central shaft. The second rotating ring is located between the two second positioning rings and sleeved on the central shaft. As the second fixed ring rotates with the kiln, the second rotating ring drives the multiple round rods to rotate. The two second positioning rings ensure that the second rotating ring can move laterally with the central shaft while rotating.

[0009] Preferably, the soft dispersing component includes a first fixed ring, multiple alloy elastic bent rods, two first positioning rings, and a first rotating ring. The first fixed ring is fixedly connected to the inner wall of the kiln body. One end of each of the multiple alloy elastic bent rods is fixedly connected to the first fixed ring, and the other end is fixedly connected to the first rotating ring. The first rotating ring is located between the two first positioning rings. The alloy elastic bent rods disperse the material during material preheating and also provide a restoring force for the return movement of the central shaft.

[0010] Preferably, multiple vertical rods are fixedly connected to the inner wall of the kiln body, and each of the multiple vertical rods is provided with a through circular hole. The central shaft passes through the multiple circular holes. An L-shaped rod is fixedly connected to the left side of the base located on the left side. A rectangular tube is fixedly connected to the lower end of the L-shaped rod. A rectangular rod is slidably connected inside the rectangular tube. The rectangular rod is elastically connected to the left inner wall of the rectangular tube by a spring. The rectangular rod is fixedly connected to the left side of the central shaft. The rectangular rod is used to restrict the rotation of the central shaft.

[0011] Preferably, a plurality of fixed rods are fixedly connected inside the kiln body, and a stop rod is fixedly connected to the right side of each of the plurality of fixed rods. The side of the stop rod away from the fixed rod has a round head. A circular plate is fixedly connected to the central shaft, and a plurality of triangular blocks are fixedly connected to the left side of the circular plate. The plurality of triangular blocks are distributed in a circular array.

[0012] Preferably, the enclosed slide rail assembly includes a mounting box, a slide rail is fixedly connected to the left inner wall of the mounting box, a slider is slidably connected to the slide rail, a hollow block is fixedly connected to the right side of the slider, pressure rollers are rotatably connected to both the upper and lower sides of the hollow block, multiple guide rollers are rotatably connected inside the hollow block, a steel strip is provided on the right side of the mounting box, the two ends of the steel strip are fixedly connected to the upper and lower sides of the mounting box, the steel strip passes sequentially over the upper pressure roller, multiple guide rollers and the lower pressure roller, a round rod is hinged to the right side of the hollow block, and two magnetic blocks are embedded in the right side of the mounting box.

[0013] Preferably, the outer wall of the kiln body is provided with an electromagnetic heating assembly, the electromagnetic heating assembly includes a plurality of fixed plates fixedly connected to the outer wall of the kiln body, a connecting plate is fixedly connected between every two cooperating fixed plates, an electromagnetic coil is installed between every two cooperating fixed plates, and the plurality of connecting plates are located outside the electromagnetic coil.

[0014] Preferably, a plurality of mounting seats are fixedly connected to the base, and two support rollers are installed on each mounting seat. A drive motor and a gearbox are fixedly connected to the upper end of the base. The output shaft of the drive motor is fixedly connected to the input shaft of the gearbox. A gear is installed on the output shaft of the gearbox. A toothed ring that meshes with the gear is fixedly connected to the outer wall of the kiln body. A plurality of lifting plates are fixedly connected to the inner wall of the kiln body.

[0015] The present invention has the following beneficial effects: Compared with existing technologies, the use of a zoned differentiated dispersing system, with soft dispersing components in the preheating zone and hard dispersing components in the high-temperature zone, precisely matches the material characteristics at different calcination stages: the alloy elastic bending rod in the preheating zone gently disperses loose soft lumps, avoiding excessive crushing and the generation of fine powder; the round rod in the high-temperature zone uses rigid oscillation to forcefully break up sintered hard lumps, thereby improving the uniformity of product particle size, significantly improving the calcination degree, and greatly increasing the yield.

[0016] 2. Compared with existing technologies, the pure mechanical self-driven reciprocating mechanism utilizes the kiln body's own rotational power and automatically drives the central shaft to complete axial reciprocating motion through the cooperation of fixed rods, push rods, triangular blocks, and springs. It eliminates the need for additional independent power sources such as motors and hydraulic cylinders, as well as electrical control systems, thus reducing equipment costs and operating energy consumption. At the same time, it avoids the damage to electrical control components in high-temperature, high-dust, and strong electromagnetic interference environments, resulting in a lower equipment failure rate and a significantly extended continuous operating cycle.

[0017] 3. Compared with existing technologies, a fully enclosed anti-jamming slide rail assembly has been designed. The slide rail opening is fully enclosed by a steel strip, and magnetic blocks are used for adsorption and sealing, which to a certain extent prevents high-temperature dust and fine powder from entering the slide rail. At the same time, the rolling transmission structure of pressure roller and guide roller is adopted, which has low frictional resistance and low wear. This solves the fatal defects of traditional slide rails that are prone to dust accumulation and jamming and require frequent cleaning and maintenance, thus extending the service life of the slide rail and improving the effective operating rate of the equipment.

[0018] 4. Compared with existing technologies, this invention employs a unique transmission structure where the central shaft is fixed and the rotating ring rotates synchronously with the kiln. The central shaft is restricted from rotation by the cooperation of a rectangular rod and a rectangular cylinder, and can only move axially back and forth. The rotating ring is connected to a fixed ring fixed to the inner wall of the kiln via a round rod / alloy elastic bent rod, and rotates synchronously with the kiln body. This structure eliminates the torsional shear stress of the central shaft to a certain extent, avoiding the risk of fatigue fracture of the shaft. At the same time, the dispersing rod rotates with the kiln body while superimposing radial oscillation, forming a three-dimensional composite disturbance trajectory, which can deeply penetrate and stir the material layer, reduce heating blind spots, improve the heating uniformity of the material, shorten the calcination time, and significantly improve production efficiency while ensuring product quality.

[0019] In summary, this invention, through the organic combination of several core technologies such as zoned differentiated dispersal, pure mechanical self-drive, fully enclosed anti-jamming slide rails, and "fixed-axis-rotary ring" composite transmission, systematically solves many technical defects of existing electromagnetic induction heating rotary kilns. It has significant advantages such as simple and reliable structure, low operating cost, good calcination quality, high production efficiency, and low maintenance workload, and has extremely high industrial application value and promotion prospects. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the external structure of a rotary kiln device for calcination using electromagnetic induction heating, as proposed in this invention. Figure 2 This is a schematic cross-sectional view of a rotary kiln device for calcination using electromagnetic induction heating, as proposed in this invention. Figure 3 This is a schematic diagram of the soft disintegration component; Figure 4 This is a schematic diagram of the hard disintegration component; Figure 5 for Figure 4 Mid-section structural schematic diagram; Figure 6 A schematic diagram of the structure of the abutment disk and multiple triangular blocks; Figure 7 for Figure 2 Enlarged structural diagram at point A; Figure 8 for Figure 5 A magnified structural diagram at point B in the middle.

[0021] In the diagram: 1. Base, 2. Fixed seat, 3. Kiln body, 4. Mounting seat, 5. Support roller, 6. Drive motor, 7. Gearbox, 8. Gear, 9. Gear ring, 10. Fixed plate, 11. Connecting plate, 12. Electromagnetic coil, 13. L-shaped rod, 14. Rectangular cylinder, 15. Rectangular rod, 16. Central shaft rod, 17. Alloy elastic bent rod, 18. Fixed rod, 19. Support rod, 20. First fixed ring, 21. First positioning ring, 22. First rotating ring, 23. Mounting box, 24. Steel strip, 25. Round rod, 26. Round plate, 27. Triangular block, 28. Slide rail, 29. Slider, 30. Hollow block, 31. Pressure roller, 32. Guide roller, 33. Second fixed ring, 34. Second positioning ring, 35. Second rotating ring, 36. Spring, 37. Vertical rod, 38. Lifting plate. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0023] Reference Figures 1-8An electromagnetic induction heating rotary kiln device includes a base 1, a kiln body 3 at the upper end of the base 1, two fixed seats 2 fixedly connected to the upper end of the base 1, and the kiln body 3 is rotatably connected to the corresponding fixed seats 2 at both ends. The fixed seats 2 and the kiln body 3 are rotatably connected by high temperature self-aligning roller bearings. The outer side of the bearing is provided with a labyrinth dustproof sealing structure to prevent external dust from entering the bearing. The kiln body 3 is provided with multiple hard dispersing components and soft dispersing components. The left side of the kiln body 3 is the preheating zone, and the right side is the high temperature zone. Multiple hard dispersing components are located in the high temperature zone, and multiple soft dispersing components are located in the preheating zone. The length ratio of the preheating zone to the high temperature zone is set according to the requirements of the material calcination process, usually 1:2 to 1:3. The outer wall of the kiln body 3 is equipped with an electromagnetic heating assembly, which includes multiple fixing plates 10 fixedly connected to the outer wall of the kiln body 3. A connecting plate 11 is fixedly connected between every two mating fixing plates 10. An electromagnetic coil 12 is installed between every two mating fixing plates 10. The multiple connecting plates 11 are located outside the electromagnetic coil 12. The electromagnetic coil 12 adopts a segmented winding structure, which corresponds to the preheating zone and the high temperature zone of the kiln body 3 respectively. The power of each segment of the electromagnetic coil 12 can be independently controlled to achieve precise temperature control in each zone. The connecting plate 11 is made of non-magnetic stainless steel, which not only serves to fix the electromagnetic coil 12, but also reduces electromagnetic leakage and has a heat dissipation function. Multiple mounting seats 4 are fixedly connected to the base 1. Each mounting seat 4 is equipped with two support rollers 5. The outer circumferential surface of the support rollers 5 matches the raceway on the outer wall of the kiln body 3 to support the entire weight of the kiln body 3 and ensure that the kiln body 3 can rotate smoothly. A drive motor 6 and a gearbox 7 are fixedly connected to the upper end of the base 1. The output shaft of the drive motor 6 is fixedly connected to the input shaft of the gearbox 7. A gear 8 is installed on the output shaft of the gearbox 7. A gear ring 9 that meshes with the gear 8 is fixedly connected to the outer wall of the kiln body 3. The gear ring 9 is a large gear ring and is fastened to the outer wall of the kiln body 3 by bolts. The gear 8 is a small gear. The two form a reduction transmission pair to convert the high-speed rotation of the drive motor 6 into the low-speed rotation of the kiln body 3. Multiple lifting plates 38 are fixedly connected to the inner wall of the kiln body 3. The lifting plates 38 are evenly distributed along the axial and circumferential directions of the kiln body 3. Their inclination angle matches the inclination angle of the kiln body 3. They are used to lift the material and assist the material in axial conveying from left to right.

[0024] The hard dispersing component includes a central shaft 16, a second fixed ring 33, multiple closed slide rail assemblies, multiple round rods 25, two second positioning rings 34, and a second rotating ring 35. The second fixed ring 33 is fixedly connected to the inner wall of the kiln body 3. The multiple closed slide rail assemblies are arrayed and fixedly connected to the second fixed ring 33. The multiple closed slide rail assemblies are radially and evenly distributed along the inner circumference of the second fixed ring 33. One end of each round rod 25 is hinged to the second rotating ring 35, and the other end is hinged to the closed slide rail assembly. During the reciprocating movement of the central shaft 16, the multiple round rods 25 are in a reciprocating swinging state, dispersing the material thrown up inside the kiln body 3. The two second positioning rings 34 are fixedly connected to the central shaft 16. The second rotating ring 35 is located between the two second positioning rings 34 and sleeved on the central shaft 16. The second rotating ring 35 and the central shaft 16 are in clearance fit, and the two can rotate freely relative to each other. As the second fixed ring 33 rotates with the kiln body 3, the second rotating ring 35 drives the multiple round rods 25 to rotate. The two second positioning rings 34 ensure that the second rotating ring 35 can move laterally with the central shaft 16 while rotating. The two second positioning rings 34 are welded and fixed to the left and right sides of the central shaft 16 respectively. Their outer diameter is larger than the inner diameter of the second rotating ring 35. They are used to limit the axial movement of the second rotating ring 35 relative to the central shaft 16 and drive the second rotating ring 35 to move axially synchronously with the central shaft 16.

[0025] The soft dispersing component includes a first fixed ring 20, multiple alloy elastic bent rods 17, two first positioning rings 21, and a first rotating ring 22. The first fixed ring 20 is fixedly connected to the inner wall of the kiln body 3. One end of each of the multiple alloy elastic bent rods 17 is fixedly connected to the first fixed ring 20, and the other end is fixedly connected to the first rotating ring 22. The alloy elastic bent rods 17 are made of nickel-based high-temperature alloy material, which can maintain good elasticity and mechanical properties even at a high temperature of 800℃. The multiple alloy elastic bent rods 17 are evenly distributed along the circumference and are all inclined at a certain angle in the same direction. The first rotating ring 22 is located between the two first positioning rings 21. The first rotating ring 22 and the central shaft 16 are in clearance fit, and the two can rotate freely relative to each other. The alloy elastic bent rods 17 disperse the material during material preheating and also provide a restoring force for the return movement of the central shaft 16.

[0026] Multiple vertical rods 37 are fixedly connected to the inner wall of the kiln body 3. Each vertical rod 37 has a through hole. The central shaft 16 passes through the multiple holes. The diameter of the through hole is larger than the outer diameter of the central shaft 16. The two are clearance-fitted, allowing the central shaft 16 to move freely along the axial direction. At the same time, the vertical rods 37 provide radial support for the central shaft 16 to prevent radial shaking during operation. An L-shaped rod 13 is fixedly connected to the left side of the base 1 on the left side. A rectangular tube 14 is fixedly connected to the lower end of the L-shaped rod 13. A rectangular rod 15 is slidably connected inside the rectangular tube 14. The rectangular rod 15 is elastically connected to the left inner wall of the rectangular tube 14 by a spring 36. The rectangular rod 15 is fixedly connected to the left side of the central shaft 16. The rectangular rod 15 is used to restrict the rotation of the central shaft 16. The cross-section of the rectangular rod 15 is rectangular, which matches the shape of the inner cavity of the rectangular tube 14. It can only slide along the axial direction and cannot rotate, thereby achieving circumferential limitation of the central shaft 16.

[0027] The kiln body 3 is fixedly connected with multiple fixed rods 18. Each fixed rod 18 is fixedly connected with a stop rod 19 on its right side. The side of the stop rod 19 away from the fixed rod 18 has a round head. A circular plate 26 is fixedly connected to the central shaft rod 16. Multiple triangular blocks 27 are fixedly connected to the left side of the circular plate 26. The multiple triangular blocks 27 are arranged in a circular array. The inclined surface of the triangular blocks 27 faces the rotation direction of the stop rod 19. The round head end of the stop rod 19 can slide smoothly along the inclined surface of the triangular blocks 27.

[0028] The enclosed slide rail assembly includes a mounting box 23. A slide rail 28 is fixedly connected to the left inner wall of the mounting box 23. A slider 29 is slidably connected to the slide rail 28. A hollow block 30 is fixedly connected to the right side of the slider 29. Pressure rollers 31 are rotatably connected to both the upper and lower sides of the hollow block 30. Multiple guide rollers 32 are rotatably connected inside the hollow block 30. A steel strip 24 is provided on the right side of the mounting box 23. The two ends of the steel strip 24 are fixedly connected to the upper and lower sides of the mounting box 23. The steel strip 24 passes sequentially over the upper pressure roller 31, the multiple guide rollers 32, and the lower... The pressure roller 31 and the steel strip 24 are made of high-temperature resistant stainless steel, which has good elasticity and tensile strength. The pressure roller 31 presses the steel strip 24 into the mounting box 23. Multiple guide rollers 32 are used to change the direction of the steel strip 24 so that the steel strip 24 forms a closed transmission circuit. The round rod 25 is hinged to the right side of the hollow block 30. Two magnetic blocks are embedded on the right side of the mounting box 23. The magnetic blocks are high-temperature resistant permanent magnets used to attract the steel strip 24 and make it stick tightly to the right side wall of the mounting box 23 to form a fully enclosed structure and prevent dust from entering the interior of the mounting box 23.

[0029] The functional principle of this invention can be explained by the following operation: Before the equipment is started, the material is fed into the feed port at the left end of the kiln body 3. The drive motor 6 is powered on and runs. Its output shaft drives the gear 8 to rotate after being reduced in speed and increased in torque through the gearbox 7. The gear 8 drives the kiln body 3 to rotate at a constant speed around its own axis under the support of two fixed seats 2 and multiple sets of support rollers 5 through meshing transmission with the gear ring 9. At the same time, the electromagnetic coil 12 surrounding the outer wall of the kiln body 3 is supplied with alternating current, generating an alternating magnetic field that causes the metal kiln body 3 to generate eddy current effect and heat up. The heat is transferred to the material in the kiln through heat conduction, and the material is heated and calcined.

[0030] During the rotation of the kiln body 3, the first fixing ring 20, the second fixing ring 33, the vertical rod 37, and the fixing rod 18, which are fixedly connected to its inner wall, rotate synchronously with the kiln body 3. For the soft dispersing component in the preheating zone: the first fixing ring 20 rotates with the kiln body 3, and the first rotating ring 22 rotates synchronously between the two first positioning rings 21 through multiple alloy elastic bent rods 17. For the hard dispersing component in the high-temperature zone: the second fixing ring 33 rotates with the kiln body 3, and the second rotating ring 35 rotates synchronously between the two second positioning rings 34 through multiple round rods 25. Since the left end of the central shaft rod 16 is restricted from rotation through the sliding fit between the rectangular rod 15 and the rectangular cylinder 14, it can only move axially. Therefore, the first rotating ring 22 and the second rotating ring 35 form a relative rotation with the central shaft rod 16, which eliminates the torsional shear stress of the central shaft rod 16 to a certain extent.

[0031] Meanwhile, the fixed rod 18 rotates with the kiln body 3, causing the abutment rod 19 at its end to make a circular motion. When the abutment rod 19 rotates to contact the triangular block 27 on the circular plate 26, the round end of the abutment rod 19 slides along the inclined surface of the triangular block 27, generating an axial thrust to push the circular plate 26 and the central shaft rod 16 to the left, while stretching the spring 36 inside the rectangular cylinder 14. When the abutment rod 19 slides past the highest point of the triangular block 27, the axial thrust disappears, the stretched spring 36 releases its elasticity, and pushes the rectangular rod 15 and the central shaft rod 16 to return to the right. As the kiln body 3 continues to rotate, the abutment rod 19 contacts and separates from the multiple triangular blocks 27 in the ring array in sequence, thereby driving the central shaft rod 16 to automatically complete continuous axial reciprocating motion without the need for an additional power source and electrical control system.

[0032] When the central shaft 16 reciprocates axially, it drives the first rotating ring 22 to move axially synchronously through the two first positioning rings 21. This causes the alloy elastic bent rod 17 connected between the first fixed ring 20 and the first rotating ring 22 to repeatedly bend and straighten, gently patting, shaking and breaking up the materials with high moisture content and easy agglomeration in the preheating zone, avoiding excessive crushing and the generation of fine powder. At the same time, the central shaft 16 drives the second rotating ring 35 to move axially synchronously through the two second positioning rings 34, pulling the inner end of the round rod 25 to move axially. The outer end of the round rod 25 drives the hollow block 30 to slide radially along the slide rail 28, causing multiple round rods 25 to simultaneously perform radial opening and closing reciprocating swings, powerfully piercing, tearing and breaking up the hard sintered lumps formed by solid-phase reaction in the high-temperature zone.

[0033] During the operation of the hard disintegration component, the mounting box 23 is a fully enclosed structure. The steel belt 24 is tensioned by the upper and lower pressure rollers 31 and multiple guide rollers 32, completely covering the opening of the slide rail 28. With the magnetic block adsorption and sealing on the right side of the mounting box 23, it can block the high-temperature dust in the kiln from entering the slide rail 28 to a certain extent. The hollow block 30 forms a rolling transmission with the steel belt 24 through the pressure rollers 31 and guide rollers 32. The frictional resistance is small and the wear is low, which solves the problem of traditional slide rails being prone to dust entry and jamming.

[0034] The lifting plates 38, which rotate with the kiln, continuously lift and drop the material. At the same time, the reciprocating alloy elastic bent rods 17 and round rods 25 deeply penetrate the material layer, causing three-dimensional disturbance, reducing the heating blind zone, and making the material more evenly heated. Under the combined action of the kiln body 3 tilt angle and the lifting plates 38, the material moves slowly axially from left to right, passing through the preheating zone and the high-temperature zone in sequence to complete the calcination process, and is finally discharged from the discharge port at the right end of the kiln body 3.

[0035] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A rotary kiln device for calcination using electromagnetic induction heating, characterized in that, include: The base (1) has a kiln body (3) at its upper end. Two fixed seats (2) are fixedly connected to the upper end of the base (1). The kiln body (3) has two fixed seats (2) through which the corresponding fixed seats (2) pass and are rotatably connected. The kiln body (3) has multiple hard dispersing components and soft dispersing components inside. The left side of the kiln body (3) is the preheating zone, and the right side is the high temperature zone. The multiple hard dispersing components are located in the high temperature zone, and the multiple soft dispersing components are located in the preheating zone. The hard disintegration assembly includes a central shaft (16), a second fixed ring (33), multiple closed slide rail assemblies, multiple round rods (25), two second positioning rings (34), and a second rotating ring (35). The second fixed ring (33) is fixedly connected to the inner wall of the kiln body (3). The multiple closed slide rail assemblies are arrayed and fixedly connected to the second fixed ring (33). One end of each of the multiple round rods (25) is hinged to the second rotating ring (35), and the other end is hinged to the closed slide rail assembly. During the reciprocating movement of the central shaft (16), the multiple round rods (25) 25) In a reciprocating swing state, the material raised in the kiln body (3) is dispersed. The two second positioning rings (34) are fixedly connected to the central shaft (16). The second rotating ring (35) is located between the two second positioning rings (34) and sleeved on the central shaft (16). During the rotation of the second fixed ring (33) with the kiln body (3), the second rotating ring (35) drives multiple round rods (25) to rotate. The two second positioning rings (34) ensure that the second rotating ring (35) can move laterally with the central shaft (16) while rotating.

2. The calcination rotary kiln device with electromagnetic induction heating according to claim 1, characterized in that: The soft dispersing component includes a first fixed ring (20), multiple alloy elastic bent rods (17), two first positioning rings (21) and a first rotating ring (22). The first fixed ring (20) is fixedly connected to the inner wall of the kiln body (3). One end of the multiple alloy elastic bent rods (17) is fixedly connected to the first fixed ring (20), and the other end is fixedly connected to the first rotating ring (22). The first rotating ring (22) is located between the two first positioning rings (21). The alloy elastic bent rods (17) disperse the material during material preheating and also provide a restoring force for the return of the central shaft (16).

3. The calcination rotary kiln device with electromagnetic induction heating according to claim 1, characterized in that: Multiple vertical rods (37) are fixedly connected to the inner wall of the kiln body (3). Each of the multiple vertical rods (37) is provided with a through round hole. The central shaft rod (16) passes through the multiple round holes. An L-shaped rod (13) is fixedly connected to the left side of the base (1) located on the left side. A rectangular tube (14) is fixedly connected to the lower end of the L-shaped rod (13). A rectangular rod (15) is slidably connected inside the rectangular tube (14). The rectangular rod (15) is elastically connected to the left inner wall of the rectangular tube (14) by a spring (36). The rectangular rod (15) is fixedly connected to the left side of the central shaft rod (16). The rectangular rod (15) is used to restrict the rotation of the central shaft rod (16).

4. The calcination rotary kiln device with electromagnetic induction heating according to claim 1, characterized in that: Multiple fixed rods (18) are fixedly connected inside the kiln body (3). Abutment rods (19) are fixedly connected to the right side of each of the multiple fixed rods (18). The side of the abutment rod (19) away from the fixed rod (18) has a round head. A circular plate (26) is fixedly connected to the central shaft rod (16). Multiple triangular blocks (27) are fixedly connected to the left side of the circular plate (26). The multiple triangular blocks (27) are arranged in a ring array.

5. The calcination rotary kiln device with electromagnetic induction heating according to claim 1, characterized in that: The enclosed slide rail assembly includes a mounting box (23). A slide rail (28) is fixedly connected to the inner left side of the mounting box (23). A slider (29) is slidably connected to the slide rail (28). A hollow block (30) is fixedly connected to the right side of the slider (29). Pressure rollers (31) are rotatably connected to both the upper and lower sides of the hollow block (30). Multiple guide rollers (32) are rotatably connected inside the hollow block (30). A steel strip (24) is provided on the right side of the mounting box (23). The two ends of the steel strip (24) are fixedly connected to the upper and lower sides of the mounting box (23). The steel strip (24) passes over the upper pressure roller (31), multiple guide rollers (32), and lower pressure roller (31) in sequence. A round rod (25) is hinged to the right side of the hollow block (30). Two magnetic blocks are embedded on the right side of the mounting box (23).

6. The calcining rotary kiln device with electromagnetic induction heating according to claim 1, characterized in that: The outer wall of the kiln body (3) is provided with an electromagnetic heating assembly. The electromagnetic heating assembly includes multiple fixed plates (10) fixedly connected to the outer wall of the kiln body (3). A connecting plate (11) is fixedly connected between every two cooperating fixed plates (10). An electromagnetic coil (12) is installed between every two cooperating fixed plates (10). The multiple connecting plates (11) are located outside the electromagnetic coil (12).

7. The calcination rotary kiln device with electromagnetic induction heating according to claim 1, characterized in that: Multiple mounting seats (4) are fixedly connected to the base (1). Two support rollers (5) are installed on each mounting seat (4). A drive motor (6) and a gearbox (7) are fixedly connected to the upper end of the base (1). The output shaft of the drive motor (6) is fixedly connected to the input shaft of the gearbox (7). A gear (8) is installed on the output shaft of the gearbox (7). A toothed ring (9) that meshes with the gear (8) is fixedly connected to the outer wall of the kiln body (3). Multiple lifting plates (38) are fixedly connected to the inner wall of the kiln body (3).

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