An electromagnetic heating double-return rotary kiln

Abstract

The present invention discloses an electromagnetic heating double-return rotary kiln, which relates to the technical field of rotary kilns. The rotary kiln includes an inclined kiln body and a material disturbing mechanism. An electromagnetic heating assembly for heating the kiln body is arranged on the outer side of the kiln body, and a large gear ring driving assembly for driving the kiln body to rotate circumferentially is also arranged on the outer side of the kiln body; the material disturbing mechanism includes a material shoveling assembly, and the material shoveling assembly includes a material shoveling plate, a traction rope and a gravity ball. A plurality of material shoveling plates are fixedly arranged on the inner wall of the kiln body. Along the rotation direction of the kiln body, the gravity ball is arranged on the material shoveling side of the material shoveling plate, and the gravity ball is installed on the kiln body through the traction rope; when the material shoveling plate rotates with the kiln body to the material shoveling position, the gravity ball is located at the position where it abuts against the material shoveling plate and the inner wall of the kiln body; when the material shoveling plate rotates with the kiln body to the discharging position, the gravity ball hangs down by its own gravity outside the material shoveling plate; the rotary kiln can realize the shoveling of materials and improve the heat exchange effect of the hot air flow in the kiln body by means of the gravity ball.

Description

Technical Field

[0001] The present invention belongs to the technical field of rotary kilns, and particularly relates to an electromagnetic heating double-pass rotary kiln. Background Art

[0002] Rotary kilns are mainly used for drying and calcining heating of ores to process the mined raw ore materials, facilitating the extraction and separation of mineral components in the subsequent ores. The traditional heating methods of rotary kilns mostly use coal or gas as heat sources. In this way, the coal combustion process is complex, the heat conversion efficiency is low, and the heating rate is slow. Moreover, it is difficult to achieve precise temperature control during the coal combustion process, and there are large temperature differences in different areas of the kiln, resulting in uneven heating of the materials and seriously affecting the stability of product quality. More seriously, the coal combustion process will release a large amount of pollutants such as sulfur dioxide, nitrogen oxides, and dust, causing serious damage to the atmospheric environment and not meeting the increasingly strict environmental protection standards.

[0003] With the continuous progress of technology and the increasing environmental protection requirements, electromagnetic heating rotary kilns have emerged. The existing electromagnetic heating rotary kilns do not require the use of open flames and do not produce polluting gases and dust pollutants. However, when using an electromagnetic heating rotary kiln to dry and heat ores, due to the accumulation of ores in the kiln body and the slow rotation of the kiln body, the ores in the central part of the inner cavity of the kiln body cannot be fully heated, reducing the drying and calcining effects of the ores. Summary of the Invention

[0004] The purpose of the present invention is to provide an electromagnetic heating double-pass rotary kiln with a simple structure and reasonable design to solve the above problems.

[0005] The present invention achieves the above purpose through the following technical solutions:

[0006] An electromagnetic heating double-pass rotary kiln, comprising:

[0007] A kiln body disposed obliquely, one end of the kiln body is mounted on the kiln head, the other end of the kiln body is mounted on the kiln tail, an electromagnetic heating component is disposed outside the kiln body, and the electromagnetic heating component is used for heating the kiln body. A large gear ring driving component is further disposed outside the kiln body, and the large gear ring driving component is used for driving the kiln body to rotate circumferentially;

[0008] A material disturbing mechanism, the material disturbing mechanism is disposed in the kiln body, the material disturbing mechanism includes a material shoveling component, and the material shoveling component includes a material shoveling plate, a traction rope, and a gravity ball. A plurality of the material shoveling plates are fixedly disposed on the inner wall of the kiln body. Along the rotation direction of the kiln body, the gravity ball is disposed on the material shoveling side of the material shoveling plate, and the gravity ball is installed on the kiln body through the traction rope;

[0009] When the material shoveling plate rotates with the kiln body to the material shoveling position, the gravity ball is located at the position where it abuts against the material shoveling plate and the inner wall of the kiln body; when the material shoveling plate rotates with the kiln body to the discharging position, the gravity ball droops by its own gravity outside the material shoveling plate.

[0010] As a further optimized solution of the present invention, the electromagnetic heating component includes an electromagnetic induction coil cylinder and a controller. The electromagnetic induction coil cylinder is sleeved outside the kiln body and is rotationally attached to the kiln body, and the coil of the electromagnetic induction coil cylinder is electrically connected to the controller;

[0011] Among them, the kiln bodies are arranged in pairs, and the material disturbing mechanism is correspondingly arranged with the kiln bodies. The kiln tail of one kiln body is communicated with the kiln head of another kiln body through a blanking pipe.

[0012] As a further optimized solution of the present invention, one end of the material shoveling plate far from the inner wall of the kiln body has a material shoveling part, and the material shoveling part is bent toward the rotation direction of the kiln body.

[0013] As a further optimized solution of the present invention, a guide rod is slidably connected in the material shoveling part. A first spring is sleeved at one end of the guide rod located in the material shoveling part, and an abutting block is arranged at one end of the guide rod penetrating through the material shoveling part to the outside of the material shoveling part;

[0014] When the material shoveling plate is at the material shoveling position, the abutting block is at the initial position; when the material shoveling plate is at the discharging position, the traction rope abuts against the abutting block until the abutting block is at the initial position; when the material shoveling plate is at a position between the material shoveling position and the discharging position, the abutting block moves in a direction away from the material shoveling plate to the maximum displacement.

[0015] As a further optimized solution of the present invention, the material disturbing mechanism further includes a main shaft, a first magnetic attraction block and a driving component. The main shaft is rotatably connected in the kiln body. A first magnetic attraction block is arranged on the circumferential side of the main shaft, and the input end of the main shaft is in transmission connection with the output end of the driving component. A slot is opened in the gravity ball, a second spring is arranged in the slot, one end of the second spring is fixedly connected to the inner wall of the slot, the other end of the second spring is fixedly connected to a plug board, and the plug board is slidably connected to the gravity ball through the slot. Among them, one end of the plug board far from the second spring has a second magnetic attraction block. When the gravity ball droops by its own gravity outside the material shoveling plate, under the magnetic attraction of the first magnetic attraction block, the outer end of the plug board slides outside the gravity ball.

[0016] As a further optimized solution of the present invention, the driving component is arranged in the kiln head. The driving component includes a driving part, a second driving gear, a second driven gear and a transition shaft. A second driving gear is installed on the output shaft of the driving part, the second driving gear is in meshing transmission with a second driven gear, the second driven gear is installed on the transition shaft, and one end of the main shaft penetrating into the inner cavity of the kiln head is fixedly connected to the transition shaft.

[0017] As a further optimization solution of the present invention, the driving assembly further includes a first driving gear, a first driven gear, a swing rod, a displacement plate and a slider. A first driving gear is further installed on the output shaft of the driving member. The first driving gear is in meshing transmission with a first driven gear. A swing rod is fixedly connected to the output shaft of the first driven gear. A limiting rod is fixedly connected to the eccentric part of the swing rod. A limiting groove is formed on the displacement plate. The limiting rod is slidably connected with the displacement plate through the limiting groove. The displacement plate is slidably connected in the main shaft. Slide rods are fixedly connected to both ends of the displacement plate respectively. A slide rail is formed on the slider. The slide rods are slidably connected with the slider through the slide rail. The slider is slidably connected to the main shaft through a chute. The first magnetic attraction block is embedded on the side of the slider away from the main shaft. Among them, the sliding direction of the slider and the main shaft is consistent with the axial direction of the main shaft. The slide rail is inclined.

[0018] As a further optimization solution of the present invention, the sliding directions of the paired sliders are opposite.

[0019] As a further optimization solution of the present invention, along the sliding direction of the displacement plate and the main shaft, guide rods are fixedly connected to both ends of the displacement plate respectively. An opening is formed on the main shaft. The guide rods are slidably connected with the main shaft through the opening.

[0020] As a further optimization solution of the present invention, the driving member is arranged in the inner cavity of the kiln head. A movable box door is hinged to one side of the kiln head.

[0021] The present invention has at least the following beneficial effects: For an electromagnetic heating double-pass rotary kiln provided by the present invention, by providing an inclined kiln body and a material disturbing mechanism arranged in the kiln body, the material disturbing mechanism includes a material shoveling plate, a traction rope and a gravity ball. Through the synchronous rotation of multiple material shoveling plates with the kiln body, the materials on the inner wall of the kiln body are shoveled to the upper interface of the materials, so that the ore near the center of the kiln body falls by its own gravity and closely contacts the inner wall of the kiln body, thereby avoiding the situation that the ore accumulates in the kiln body, resulting in uneven internal and external heat absorption and affecting the drying and calcination effects. Moreover, after the gravity ball abuts against the inner wall of the kiln body to absorb heat, when the gravity ball hangs down outside the material shoveling plate due to its own gravity, the distance between the gravity ball and the upper interface of the ore is reduced. The shaking of the gravity ball drives the flow of the hot gas around it, enhancing the convective heat transfer between the hot gas flow and the materials, enabling the gravity ball to volatilize and dissipate the absorbed heat, and improving the heat conduction to the ore at the upper interface position.

[0022] In addition, a contact block is provided at the material shoveling end of the material shoveling plate. After the gravity ball hangs vertically outside the material shoveling plate under its own gravity, the contact constraint of the traction rope on the contact block causes the gravity ball to swing back and forth, which helps the flow and heat exchange of the hot air flow in the kiln body. Moreover, the magnetic attraction of the first magnetic block on the side of the main shaft in the kiln body to the second magnetic block on the plug plate causes the plug plate to move outwards, increasing the disturbance contact surface of the gravity ball on the hot air flow in the kiln body through the plug plate and improving the heat exchange efficiency of the hot air flow in the kiln body;

[0023] Furthermore, on the side of the main shaft provided in the kiln body, a reciprocating moving slider and a reciprocating moving material guiding rod are respectively arranged to guide the ore materials adjacent to the main shaft in multiple directions, avoiding adhesion between the ore materials. Brief Description of the Drawings

[0024] Figure 1 is the overall structural schematic diagram of the present invention;

[0025] Figure 2 is of the present invention Figure 1 front structural schematic diagram;

[0026] Figure 3 is the partial sectional structural schematic diagram of the driving assembly of the kiln body, kiln head and main shaft of the present invention;

[0027] Figure 4 is the sectional structural schematic diagram of the material shoveling assembly in the kiln body of the present invention;

[0028] Figure 5 is of the present invention Figure 4 enlarged view at A in;

[0029] Figure 6 is the sectional structural schematic diagram of the gravity ball under the action of gravity of the present invention;

[0030] Figure 7 is the sectional structural schematic diagram of the main shaft and the material guiding assembly of the present invention;

[0031] Figure 8 is the partial three-dimensional structural schematic diagram of the material guiding assembly of the present invention;

[0032] Figure 9 is the partial three-dimensional structural schematic diagram of the main shaft, transition shaft and second driven gear of the present invention.

[0033] In the figure: 1, base; 21, kiln tail; 22, supporting assembly of carrying rollers; 23, electromagnetic induction coil cylinder; 231, controller; 24, large gear ring driving assembly; 25, kiln body; 26, kiln head; 261, feed pipe; 27, discharge pipe; 211, blanking pipe; 3, material disturbing mechanism; 31, movable box door; 32, first driving gear; 33, second driving gear; 34, second driven gear; 35, transition shaft; 36, first driven gear; 37, driving member; 38, main shaft; 39, slider; 310, material shoveling plate; 311, towing rope; 312, gravity ball; 313, abutting block; 314, first spring; 315, guide rod; 316, slot; 317, second spring; 318, inserting plate; 319, first magnetic attracting block; 320, shifting plate; 321, limiting rod; 322, material guiding rod; 323, opening; 324, swing rod; 325, limiting groove; 326, sliding rod; 327, slide rail; 328, sliding groove. Detailed implementation mode

[0034] The present application will be further described in detail below with reference to the accompanying drawings. It is necessary to point out here that the following specific implementation modes are only used to further illustrate the present application and cannot be construed as limiting the protection scope of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application according to the above application content.

[0035] Embodiment 1

[0036] As Figure 1 、 Figure 2 shown, the present invention provides an electromagnetic heating double-pass rotary kiln, including:

[0037] The inclined kiln body 25 is erected on the base 1. One end of the kiln body 25 is erected on the kiln head 26, and the other end of the kiln body 25 is erected on the kiln tail 21. An electromagnetic heating assembly is arranged on the outer side of the kiln body 25 for heating the kiln body 25. A large gear ring driving assembly 24 is also arranged on the outer side of the kiln body 25 for driving the kiln body 25 to rotate circumferentially;

[0038] The material disturbing mechanism 3 is arranged in the kiln body 25. Continuing to refer to Figure 4 and Figure 5 , the material disturbing mechanism 3 includes a material shoveling assembly. The material shoveling assembly includes a material shoveling plate 310, a towing rope 311 and a gravity ball 312. A plurality of material shoveling plates 310 are fixedly arranged on the inner wall of the kiln body 25. Along the rotation direction of the kiln body 25, the gravity ball 312 is arranged on the material shoveling side of the material shoveling plate 310, and the gravity ball 312 is installed on the kiln body 25 through the towing rope 311;

[0039] When the material shoveling plate 310 rotates with the kiln body 25 to the material shoveling position, the gravity ball 312 is located at the position where it abuts against the material shoveling plate 310 and the inner wall of the kiln body 25; when the material shoveling plate 310 rotates with the kiln body 25 to the discharging position, the gravity ball 312 droops by its own gravity outside the material shoveling plate 310.

[0040] In the above embodiment, the kiln body 25 is heated by the electromagnetic heating assembly, so as to heat the materials in the kiln body 25. The large gear ring driving assembly 24 drives the kiln body 25 to rotate. Exemplarily, the large gear ring driving assembly 24 includes a driving motor, a speed reducer, a large gear ring and a small gear ring. The output end of the driving motor is in transmission connection with the small gear ring through the speed reducer. A large gear ring is arranged outside the kiln body, and the small gear ring and the large gear ring are meshed and driven, so as to realize the slow rotation of the kiln body, so as to realize the rotation of the kiln body 25 to make the ore inside it turn over. Exemplarily, the supporting roller assembly 22 is arranged outside the kiln body 25 to assist in supporting the rotation of the kiln body 25;

[0041] During the rotation of the kiln body 25, as Figure 4 shown, the kiln body 25 rotates counterclockwise. The dotted line indicates the upper interface position of the ore in the kiln body 25. The material shoveling plate 310 rotates synchronously with the kiln body 25, so as to shovel the ore adjacent to the inner wall of the kiln body 25 towards the upper interface of the ore, so that the ore adjacent to the center of the kiln body 25 falls by its own gravity and is in close contact with the inner wall of the kiln body 25 at a short distance, so as to avoid uneven heating inside and outside the kiln body 25 due to ore accumulation, affecting the drying and calcination effects;

[0042] Moreover, the gravity ball 312 first abuts against the upper interface of the ore under the action of gravity. As the gravity ball 312 at the upper left corner position shown in Figure 4 , with the continuous counterclockwise rotation of the kiln body 25 until the material shoveling plate 310 is at the material shoveling position, that is, the position below the dotted line interface in Figure 4 , the gravity ball 312 is pushed to the corner position between the material shoveling plate 310 and the inner wall of the kiln body 25 under the extrusion of the ore, so as to realize the close contact between the gravity ball 312 and the inner wall of the kiln body 25 and absorb heat; with the continuous rotation of the material shoveling plate 310, the ore on the material shoveling plate 310 gradually drops, and the gravity ball 312 droops by its own gravity outside the material shoveling plate 310. At this time, the distance between the gravity ball 312 and the upper interface of the ore is reduced, so that the gravity ball 312 volatilizes and dissipates the absorbed heat, improving the heat conduction to the ore at the upper interface position. Moreover, the shaking of the gravity ball 312 drives the flow of the hot gas around it, enhancing the convective heat transfer between the hot gas flow and the material.

[0043] It should be noted that continue to refer to Figure 1 and Figure 2, the electromagnetic heating assembly includes an electromagnetic induction coil cylinder 23 and a controller 231. The electromagnetic induction coil cylinder 23 is sleeved outside the kiln body 25 and is in rotational contact with the kiln body 25, and the coil of the electromagnetic induction coil cylinder 23 is electrically connected to the controller 231; the controller 231 adjusts the current intensity of the electromagnetic induction coil cylinder 23, thereby controlling the temperature inside the kiln body 25;

[0044] Among them, the kiln bodies 25 are arranged in pairs, and the material disturbing mechanism 3 is correspondingly arranged with the kiln bodies 25. The kiln tail 21 corresponding to one kiln body 25 is communicated with the kiln head 26 corresponding to the other kiln body 25 through a blanking pipe 211, as Figure 2 shown, the paired kiln bodies 25 are stacked. Ore materials are fed through a feed pipe 261 on the kiln head 26 corresponding to the upper kiln body 25, so that a blanking pipe 211 is arranged below the kiln tail 21 corresponding to the upper kiln body 25, and a discharge pipe 27 is arranged at the position of the kiln tail 21 corresponding to the lower kiln body 25. Through the double-pass rotary kiln, different process treatments can be carried out on the ore respectively. For example, the upper kiln body 25 dries the ore in the kiln body 25, and the lower kiln body 25 calcines the ore in the kiln body 25. It only needs to control the temperature corresponding to different processes in the kiln body 25.

[0045] In one embodiment, continue to refer to Figure 4 and Figure 5 , one end of the material shoveling plate 310 away from the inner wall of the kiln body 25 has a material shoveling part, and the material shoveling part is bent towards the rotation direction of the kiln body 25, so that the material shoveling part of the material shoveling plate 310 shovels materials.

[0046] Continue to refer to Figure 5 , a guide rod 315 is slidably connected inside the material shoveling part. A first spring 314 is sleeved at one end of the guide rod 315 located inside the material shoveling part. An abutting block 313 is arranged at one end of the guide rod 315 passing through the material shoveling part to the outside of the material shoveling part;

[0047] When the material shoveling plate 310 is in the material shoveling position, as Figure 4As shown, under the extrusion of the ore, the abutting block 313 is in the initial position, that is, the abutting block 313 is stretched by the ore to stretch the first spring 314; as the shoveling plate 310 continues to rotate to a position above the upper interface of the ore, that is, when the shoveling plate 310 is between the shoveling position and the discharging position, under the reset action of the first spring 314, the abutting block 313 moves away from the shoveling plate 310 to the maximum displacement. At this time, the shoveled ore is supported, and as the shoveling plate 310 continues to rotate, when the shoveling plate 310 is in the discharging position, the gravity ball 312 hangs vertically by its own gravity outside the shoveling plate 310, the traction rope 311 is straightened, and the traction rope 311 abuts against the abutting block 313 until the abutting block 313 is in the initial position. And under the shaking of the gravity ball 312, the traction rope 311 dynamically abuts against the abutting block 313, causing the first spring 314 to reciprocally expand and contract, increasing the shaking period of the gravity ball 312, which helps the flow and heat exchange of the hot air flow in the kiln body 25.

[0048] Embodiment 2

[0049] Based on Embodiment 1, continue to refer to Figure 3 、 Figure 4 and Figure 6 Moreover, the material disturbing mechanism 3 further includes a main shaft 38, a first magnetic attracting block 319 and a driving assembly. The main shaft 38 is rotatably connected in the kiln body 25. A first magnetic attracting block 319 is arranged on the circumferential side of the main shaft 38, and the input end of the main shaft 38 is in transmission connection with the output end of the driving assembly. A slot 316 is provided in the gravity ball 312, and a second spring 317 is arranged in the slot 316. One end of the second spring 317 is fixedly connected to the inner wall of the slot 316, and the other end of the second spring 317 is fixedly connected to the insertion plate 318. The insertion plate 318 is slidably connected to the gravity ball 312 through the slot 316. Among them, the end of the insertion plate 318 away from the second spring 317 has a second magnetic attracting block. When the insertion plate 318 is in the initial position, the outer end of the insertion plate 318 does not protrude from the gravity ball 312. When the gravity ball 312 hangs vertically by its own gravity outside the shoveling plate 310, under the magnetic attraction of the first magnetic attracting block 319, the outer end of the insertion plate 318 slides outside the gravity ball 312, increasing the disturbance contact surface of the gravity ball 312 with the hot air flow in the kiln body 25 through the insertion plate 318, greatly improving the heat exchange efficiency of the hot air flow in the kiln body 25.

[0050] Exemplarily, continue to refer to Figure 3 and Figure 9, the driving component is arranged in the kiln head 26. The driving component includes a driving member 37, a second driving gear 33, a second driven gear 34 and a transition shaft 35. A second driving gear 33 is installed on the output shaft of the driving member 37. The second driving gear 33 is in meshing transmission with a second driven gear 34. The second driven gear 34 is installed on the transition shaft 35. One end of the main shaft 38 passing through to the inner cavity of the kiln head 26 is fixedly connected to the transition shaft 35, so as to realize the rotation of the main shaft 38. Among them, the rotation direction of the main shaft 38 is not limited.

[0051] It should be noted that, continue to refer to Figure 3 , the driving member 37 is a motor. The motor is arranged in the inner cavity of the kiln head 26. A movable box door 31 is hinged on one side of the kiln head 26, so that it is convenient for the staff to open the movable box door 31 to repair the driving component in the kiln head 26.

[0052] Continue to refer to Figure 3 , Figure 7 , Figure 8 and Figure 9 , the driving component further includes a first driving gear 32, a first driven gear 36, a swing rod 324, a displacement plate 320 and a slider 39. A first driving gear 32 is further installed on the output shaft of the driving member 37. The first driving gear 32 is in meshing transmission with a first driven gear 36. A swing rod 324 is fixedly connected to the output shaft of the first driven gear 36. A limiting rod 321 is fixedly connected to the eccentric part of the swing rod 324. A limiting groove 325 is formed on the displacement plate 320. The limiting rod 321 is slidably connected to the displacement plate 320 through the limiting groove 325. The displacement plate 320 is slidably connected in the main shaft 38. Slide rods 326 are respectively fixedly connected to both ends of the displacement plate 320. A slide rail 327 is formed on the slider 39. The slide rods 326 are slidably connected to the slider 39 through the slide rail 327. The slider 39 is slidably connected to the main shaft 38 through a chute 328. A first magnetic attraction block 319 is embedded on the side of the slider 39 away from the main shaft 38. Among them, the sliding direction of the slider 39 and the main shaft 38 is the same as the axial direction of the main shaft 38, and the slide rail 327 is inclined.

[0053] In the above embodiment, the meshing transmission between the first driving gear 32 and the first driven gear 36 enables the swing rod 324 to drive the displacement plate 320 to reciprocate left and right (taking the Figure 7 shown orientation as an example), so as to further realize the reciprocating sliding of the slider 39 along the chute 328 by means of the transmission between the slide rod 326 and the slide rail 327. Moreover, the outer surface of the slider 39 protrudes from the main shaft 38. When the slider 39 reciprocates, the ore materials adjacent to the main shaft 38 are rubbed, so as to avoid adhesion between the ore materials.

[0054] It should be noted that the meshing transmission ratio of the first driving gear 32 and the first driven gear 36 is greater than 1, and the meshing transmission ratio of the second driving gear 33 and the second driven gear 34 is less than 1, so that the rotation speed of the main shaft 38 is less than the rotation speed of the swing rod 324, realizing that within the time of one rotation of the main shaft 38, the slider 39 makes at least one reciprocating slide.

[0055] Exemplarily, the sliding directions of the paired sliders 39 are opposite, and the inclination directions of the slide rails 327 provided on the paired sliders 39 intersect.

[0056] Exemplarily, continue to refer to Figure 7 、 Figure 8 and Figure 9 As shown in, along the sliding direction of the shifting plate 320 and the main shaft 38, guide rods 322 are fixedly connected to both ends of the shifting plate 320 respectively. An opening 323 is provided on the main shaft 38, and the guide rods 322 are slidably connected to the main shaft 38 through the opening 323. Among them, as Figure 8 shown, a plurality of guide rods 322 are provided, and they are arranged in an array along the axis direction of the main shaft 38. Through the reciprocating movement of the shifting plate 320, the guide rods 322 slide reciprocally along the opening 323, realizing the guiding of the ore materials adjacent to the main shaft 38 by the guide rods 322, and promoting the movement of the ore materials in the radial direction of the main shaft 38.

[0057] It should be noted that when this electromagnetic heating double - return rotary kiln is in use, the kiln body 25 is heated by the electromagnetic heating component, and the paired kiln bodies 25 are temperature - controlled according to the heating process conditions of the corresponding materials, and further, the kiln body 25 is driven to rotate by the large gear ring driving component 24 to turn the materials inside it. Among them, the ore materials to be processed are put into the upper kiln body 25 through the feed pipe 261;

[0058] Under the slow rotation of the kiln body 25, a plurality of shoveling plates 310 provided on the inner wall of the kiln body 25 rotate synchronously with the kiln body 25, thus shoveling the ore adjacent to the inner wall of the kiln body 25 towards the upper interface of the ore, so that the ore near the center of the kiln body 25 falls by its own gravity and contacts the inner wall of the kiln body 25 at a short distance. Moreover, the gravity ball 312 first abuts against the upper interface of the ore under the action of gravity, such as the gravity ball 312 at the upper - left corner position as Figure 4 shown. As the kiln body 25 continues to rotate counter - clockwise until the shoveling plate 310 is in the shoveling position, that is Figure 4At the position below the dotted line interface, under the extrusion of the ore, the gravity ball 312 is pushed to the corner position between the shoveling plate 310 and the inner wall of the kiln body 25, so as to realize the close contact between the gravity ball 312 and the inner wall of the kiln body 25 and absorb heat. As the shoveling plate 310 continues to rotate, the ore on the shoveling plate 310 gradually drops, and the gravity ball 312 hangs down by its own gravity outside the shoveling plate 310 and shakes. At this time, the distance between the gravity ball 312 and the upper interface of the ore is reduced.

[0059] Moreover, by means of the magnetic attraction of the first magnetic attraction block 319 on one side of the main shaft 38 to the second magnetic attraction block on the insertion plate 318, the insertion plate 318 extends out of the gravity ball 312, so as to increase the contact area of the gravity ball 312 with the hot air flow in the kiln body 25 when shaking, and improve the heat exchange efficiency of the hot air flow in the kiln body 25.

[0060] In addition, driven by the driving part 37, the meshing transmission of the first driving gear 32 and the first driven gear 36 realizes the rotation of the main shaft 38, and the meshing transmission of the second driving gear 33 and the second driven gear 34 realizes the reciprocating movement of the swing rod 324 driving the displacement plate 320 through the limiting rod 321. Thus, through the transmission of the sliding rod 326 on the displacement plate 320 and the slide rail 327, the reciprocating movement of the slider 39 along the axis line direction of the main shaft 38 is realized, and the rubbing of the material near the main shaft 38 along the axis line direction of the main shaft 38 is carried out. And through the displacement plate 320 driving the guide rod 322 to reciprocate along the opening 323 direction, the guiding of the material at the main shaft 38 along the radial direction of the main shaft 38 is realized, so as to avoid the adhesion between the ore materials.

[0061] The above embodiments only represent several implementation manners of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the patent of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. An electromagnetic heating double-pass rotary kiln, characterized in that: include: A kiln body (25) is arranged at an angle, one end of the kiln body (25) is mounted on a kiln head (26), and the other end of the kiln body (25) is mounted on a kiln tail (21). An electromagnetic heating assembly is arranged on the outside of the kiln body (25), and the electromagnetic heating assembly is used to heat the kiln body (25). A large gear ring driving assembly (24) is also arranged on the outside of the kiln body (25), and the large gear ring driving assembly (24) is used to drive the kiln body (25) to rotate in a circumferential direction. A material disturbance mechanism (3), the material disturbance mechanism (3) being arranged in the kiln body (25), the material disturbance mechanism (3) comprising a material shoveling assembly, the material shoveling assembly comprising a material shoveling plate (310), a traction rope (311) and a gravity ball (312), a plurality of the material shoveling plates (310) being fixedly arranged on the inner wall of the kiln body (25), the gravity ball (312) being arranged on the material shoveling side of the material shoveling plate (310) along the rotation direction of the kiln body (25), and the gravity ball (312) being mounted on the kiln body (25) via the traction rope (311); When the shoveling plate (310) rotates with the kiln body (25) to a shoveling position, the gravity ball (312) is located at a position abutting against the shoveling plate (310) and the inner wall of the kiln body (25); when the shoveling plate (310) rotates with the kiln body (25) to a discharge position, the gravity ball (312) hangs down to the outside of the shoveling plate (310) due to gravity; The scraping plate (310) has a scraping portion at one end away from the inner wall of the kiln body (25), and the scraping portion is bent toward the rotation direction of the kiln body (25); A guide rod (315) is slidably connected in the shoveling part, one end of the guide rod (315) located in the shoveling part is sleeved with a first spring (314), and one end of the guide rod (315) that passes through the shoveling part to the outside of the shoveling part is provided with an abutment block (313); When the shoveling plate (310) is located at the shoveling position, the abutment block (313) is located at the initial position; when the shoveling plate (310) is located at the unloading position, the traction rope (311) abuts against the abutment block (313) until the abutment block (313) is located at the initial position; when the shoveling plate (310) is located at a position between the shoveling position and the unloading position, the abutment block (313) moves in a direction away from the shoveling plate (310) to a maximum displacement.

2. The electromagnetic heating double-pass rotary kiln according to claim 1, characterized in that: The electromagnetic heating assembly comprises an electromagnetic induction coil drum (23) and a controller (231); the electromagnetic induction coil drum (23) is sleeved on the outside of the kiln body (25) and is rotationally fitted with the kiln body (25); and the coil of the electromagnetic induction coil drum (23) is electrically connected to the controller (231); The kiln bodies (25) are arranged in pairs, and the material disturbing mechanism (3) is arranged corresponding to the kiln body (25), and the kiln tail (21) of one kiln body (25) is connected to the kiln head (26) of the other kiln body (25) through a material dropping pipe (211).

3. The electromagnetic heating double-pass rotary kiln according to claim 2, characterized in that: The material disturbance mechanism (3) further comprises a main shaft (38), a first magnetic block (319) and a driving assembly. The main shaft (38) is rotatably connected in the kiln body (25). The first magnetic block (319) is provided on the circumferential side of the main shaft (38). The input end of the main shaft (38) is transmission-connected to the output end of the driving assembly. A slot (316) is provided in the gravity ball (312). A second spring (317) is provided in the slot (316). One end of the second spring (317) is connected to the slot (316). The inner wall is fixedly connected, the other end of the second spring (317) is fixedly connected to the plug plate (318), and the plug plate (318) is slidably connected to the gravity ball (312) through the slot (316), wherein the end of the plug plate (318) away from the second spring (317) has a second magnetic block, and when the gravity ball (312) hangs down to the outside of the shoveling plate (310) due to gravity, the second magnetic block slides the outer end of the plug plate (318) to the outside of the gravity ball (312) under the action of the magnetic attraction of the first magnetic block (319).

4. The electromagnetic heating double-pass rotary kiln according to claim 3, characterized in that: The driving assembly is arranged in the kiln head (26), and comprises a driving member (37), a second driving gear (33), a second driven gear (34) and a transition shaft (35). The second driving gear (33) is mounted on the output shaft of the driving member (37), the second driving gear (33) is meshed with the second driven gear (34), the second driven gear (34) is mounted on the transition shaft (35), and one end of the main shaft (38) passes through the inner cavity of the kiln head (26) and is fixedly connected to the transition shaft (35).

5. The electromagnetic heating double-pass rotary kiln according to claim 4, characterized in that: The driving assembly further comprises a first driving gear (32), a first driven gear (36), a swing rod (324), a shift plate (320) and a slider (39); the first driving gear (32) is further mounted on the output shaft of the driving member (37); the first driving gear (32) is meshed with the first driven gear (36); the output shaft of the first driven gear (36) is fixedly connected to the swing rod (324); the eccentric portion of the swing rod (324) is fixedly connected to a limiting rod (321); a limiting groove (325) is provided on the shift plate (320); the limiting rod (321) is slidably connected to the shift plate (320) via the limiting groove (325); The shift plate (320) is slidably connected to the main shaft (38), and the two ends of the shift plate (320) are respectively fixedly connected with a slide rod (326). The slide block (39) is provided with a slide rail (327). The slide rod (326) is slidably connected to the slide block (39) through the slide rail (327). The slide block (39) is slidably connected to the main shaft (38) through a slide groove (328). The first magnetic block (319) is embedded on a side of the slide block (39) away from the main shaft (38), wherein the sliding direction of the slide block (39) and the main shaft (38) is consistent with the axial centerline direction of the main shaft (38), and the slide rail (327) is inclined.

6. The electromagnetic heating double-pass rotary kiln according to claim 5, characterized in that: The sliding directions of the sliding blocks (39) arranged in pairs are opposite.

7. The electromagnetic heating double-pass rotary kiln according to claim 6, characterized in that: Along the sliding direction of the shift plate (320) and the main shaft (38), the two ends of the shift plate (320) are respectively fixedly connected with guide rods (322), the main shaft (38) is provided with an opening (323), and the guide rod (322) is slidably connected to the main shaft (38) through the opening (323).

8. The electromagnetic heating double-pass rotary kiln according to claim 7, characterized in that: The driving member (37) is arranged in the inner cavity of the kiln head (26), and a movable box door (31) is hinged on one side of the kiln head (26).

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