Electromagnetic heating double-return rotary kiln

Abstract

The invention discloses an electromagnetic heating double-return-stroke rotary kiln, and relates to the technical field of rotary kilns, the rotary kiln comprises an inclined kiln body and a material disturbing mechanism, the outer side of the kiln body is provided with an electromagnetic heating assembly used for heating the kiln body, and the outer side of the kiln body is further provided with a large gear ring driving assembly used for driving the kiln body to rotate in the circumferential direction; the material disturbing mechanism comprises a material shoveling assembly, the material shoveling assembly comprises material shoveling plates, a traction rope and a gravity ball, the multiple material shoveling plates are fixedly arranged on the inner wall of the kiln body in the rotating direction of the kiln body, and the gravity ball is arranged on the material shoveling side of the material shoveling plates and installed on the kiln body through the traction rope; when the material shoveling plate rotates to the material shoveling position along with the kiln body, the gravity ball is located at the position abutting against the material shoveling plate and the inner wall of the kiln body. When the material shoveling plate rotates to a discharging position along with the kiln body, the gravity ball droops to the outside of the material shoveling plate due to gravity; according to the rotary kiln, materials can be shoveled, and the heat exchange effect of hot airflow in the kiln body is improved by means of the gravity balls.

Description

Technical Field

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

[0002] Rotary kilns are mainly used for drying, calcining and heating of ores, so as to process the mined raw ore materials and facilitate the subsequent extraction and separation of mineral components in the ore. Traditional rotary kiln heating methods mostly use coal and gas as heat sources. The coal combustion process under this method is complicated, the heat conversion efficiency is low, and the heating rate is slow. Moreover, it is difficult to achieve accurate temperature control during the coal combustion process. The temperature difference between different areas in the kiln is large, resulting in uneven heating of the material, which seriously affects the stability of product quality. What is more serious is that the coal combustion process will release a large amount of pollutants such as sulfur dioxide, nitrogen oxides and dust, which will cause serious damage to the atmospheric environment and do not meet the increasingly stringent environmental protection standards.

[0003] With the continuous advancement of science and technology and the increasing requirements for environmental protection, electromagnetic heating rotary kilns have emerged. Existing electromagnetic heating rotary kilns do not require the use of open flames and do not produce polluting gases and dust pollutants. However, when the electromagnetic heating rotary kiln is used to dry and heat the ore, due to the accumulation of ore in the kiln body and the slow rotation of the kiln body, the ore in the center of the kiln cavity cannot be fully heated, reducing the effect of ore drying and calcining. Summary of the invention

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

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

[0006] An electromagnetically heated double-return rotary kiln, comprising:

[0007] A kiln body is arranged obliquely, one end of the kiln body is mounted on the kiln head, and the other end of the kiln body is mounted on the kiln tail. An electromagnetic heating component is arranged on the outside of the kiln body, and the electromagnetic heating component is used to heat the kiln body. A large gear ring driving component is also arranged on the outside of the kiln body, and the large gear ring driving component is used to drive the kiln body to rotate circumferentially;

[0008] A material disturbing mechanism, the material disturbing mechanism is arranged in the kiln body, the material disturbing mechanism comprises a shoveling assembly, the shoveling assembly comprises a shoveling plate, a traction rope and a gravity ball, a plurality of the 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 shoveling side of the shoveling plate, and the gravity ball is installed on the kiln body through the traction rope;

[0009] When the shoveling plate rotates with the kiln body to the shoveling position, the gravity ball is located at a position abutting against the shoveling plate and the inner wall of the kiln body; when the shoveling plate rotates with the kiln body to the unloading position, the gravity ball hangs down to the outside of the shoveling plate due to gravity.

[0010] As a further optimization scheme of the present invention, the electromagnetic heating assembly includes an electromagnetic induction coil drum and a controller, the electromagnetic induction coil drum is sleeved outside the kiln body and rotates in contact with the kiln body, and the coil of the electromagnetic induction coil drum is electrically connected to the controller;

[0011] The kiln bodies are arranged in pairs, and the material disturbing mechanism is arranged corresponding to the kiln body, and the kiln tail of one kiln body is connected with the kiln head of the other kiln body through a material dropping pipe.

[0012] As a further optimization solution of the present invention, the scraping plate has a scraping portion at one end away from the inner wall of the kiln body, and the scraping portion is bent toward the rotation direction of the kiln body.

[0013] As a further optimization scheme of the present invention, a guide rod is slidably connected in the shoveling part, one end of the guide rod located in the shoveling part is sleeved with a first spring, and one end of the guide rod that passes through the shoveling part to the outside of the shoveling part is provided with an abutment block;

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

[0015] As a further optimization scheme of the present invention, the material disturbance mechanism also includes a main shaft, a first magnetic block and a driving assembly. The main shaft is rotatably connected in the kiln body, a first magnetic block is arranged on the circumferential side of the main shaft, and the input end of the main shaft is transmission-connected with the output end of the driving assembly. 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, and the other end of the second spring is fixedly connected to the plug plate, and the plug plate is slidingly connected to the gravity ball through the slot, wherein the end of the plug plate away from the second spring has a second magnetic block, and when the gravity ball hangs down to the outside of the shoveling plate due to gravity, the outer end of the plug plate slides to the outside of the gravity ball under the action of the magnetic attraction of the first magnetic block.

[0016] As a further optimization scheme of the present invention, the driving assembly is arranged in the kiln head, and the driving assembly includes a driving member, a second driving gear, a second driven gear and a transition shaft. The second driving gear is installed on the output shaft of the driving member, and the second driving gear is meshed with the second driven gear. The second driven gear is installed on the transition shaft, and one end of the main shaft passes through the inner cavity of the kiln head and is fixedly connected to the transition shaft.

[0017] As a further optimization scheme of the present invention, the drive assembly also includes a first driving gear, a first driven gear, a rocker rod, a shift plate and a slider, the first driving gear is also installed on the output shaft of the driving member, the first driving gear is meshed with the first driven gear, the output shaft of the first driven gear is fixedly connected with a rocker rod, the eccentric part of the rocker rod is fixedly connected with a limiting rod, a limiting groove is provided on the shift plate, the limiting rod is slidably connected to the shift plate through the limiting groove, the shift plate is slidably connected in the main shaft, the two ends of the shift plate are respectively fixedly connected with sliding rods, the slider is provided with a slide rail, the sliding rod is slidably connected to the slider through the slide rail, the slider is slidably connected to the main shaft through the slide groove, the first magnetic block is embedded in the side of the slider away from the main shaft, wherein the sliding direction of the slider and the main shaft is consistent with the axial centerline direction of the main shaft, and the slide rail is inclined.

[0018] As a further optimization solution of the present invention, the sliding directions of the sliding blocks arranged in pairs are opposite.

[0019] As a further optimization scheme of the present invention, along the sliding direction of the shift plate and the main shaft, the two ends of the shift plate are respectively fixedly connected with guide rods, the main shaft is provided with an opening, and the guide rod is slidably connected to 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, and a movable door is hinged on one side of the kiln head.

[0021] The present invention has at least the following beneficial effects: the electromagnetic heating double-return rotary kiln provided by the present invention is provided with an inclined kiln body and a material disturbing mechanism arranged in the kiln body, the material disturbing mechanism includes a shoveling plate, a traction rope and a gravity ball, and the plurality of shoveling plates rotate synchronously with the kiln body to shovel the material at the inner wall of the kiln body to the upper interface of the material, so that the ore near the center of the kiln body falls by gravity and contacts the inner wall of the kiln body at a close distance, thereby avoiding the situation in which the kiln body is piled up, the heating inside and outside is uneven, and the drying and calcining effects are affected. Moreover, after the gravity ball abuts against the inner wall of the kiln body to absorb heat, after the gravity ball droops by gravity to the outside of the shoveling plate, the distance between the gravity ball and the upper interface of the ore is reduced, and the shaking of the gravity ball drives the flow of hot gas around it, so that the convective heat exchange between the hot gas flow and the material is enhanced, so that the gravity ball volatilizes the absorbed heat and dissipates the heat, thereby improving the heat conduction to the ore at the upper interface;

[0022] In addition, an abutment block is arranged at the shoveling end of the shoveling plate. After the gravity ball hangs down to the outside of the shoveling plate due to gravity, the abutment constraint of the abutment block by the traction rope makes the gravity ball swing back and forth, which is helpful for the flow and heat exchange of the hot air flow in the kiln body. Moreover, the magnetic attraction force of the first magnetic attraction block on the side of the main shaft in the kiln body to the second magnetic attraction block on the plug plate causes the plug plate to move outward, and the plug plate increases the disturbing contact surface of the gravity ball on the hot air flow in the kiln body, thereby improving the heat exchange efficiency of the hot air flow in the kiln body.

[0023] In addition, the side of the main shaft arranged in the kiln body is provided with a reciprocating slider and a reciprocating material guide rod, so that the ore materials adjacent to the main shaft are guided in multiple directions to avoid adhesion between the ore materials. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0025] Figure 2 The present invention Figure 1 A schematic diagram of the front structure of

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

[0027] Figure 4 It is a schematic cross-sectional view of the shoveling assembly in the kiln body of the present invention;

[0028] Figure 5 The present invention Figure 4 Enlarged view of point A in the middle;

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

[0030] Figure 7 It is a schematic cross-sectional view of the main shaft and material guide assembly of the present invention;

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

[0032] Fig. 9 It is a 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, support roller assembly; 23, electromagnetic induction coil cylinder; 231, controller; 24, large gear ring drive assembly; 25, kiln body; 26, kiln head; 261, feed pipe; 27, discharge pipe; 211, drop pipe; 3, material disturbance 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, drive member; 3 8. Spindle; 39. Sliding block; 310. Shovel plate; 311. Traction rope; 312. Gravity ball; 313. Abutment block; 314. First spring; 315. Guide rod; 316. Slot; 317. Second spring; 318. Insert plate; 319. First magnetic block; 320. Shift plate; 321. Limit rod; 322. Guide rod; 323. Opening; 324. Rocker; 325. Limit groove; 326. Slide rod; 327. Slide rail; 328. Slide groove. DETAILED DESCRIPTION

[0034] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0035] Embodiment 1

[0036] like Figure 1 , Figure 2 As shown, the present invention provides an electromagnetic heating double-return rotary kiln, comprising:

[0037] The kiln body 25 is tilted and mounted on the base 1. One end of the kiln body 25 is mounted on the kiln head 26, and the other end of the kiln body 25 is mounted on the kiln tail 21. An electromagnetic heating component is arranged on the outer side of the kiln body 25, and the electromagnetic heating component is used to heat the kiln body 25. A large gear ring driving component 24 is also arranged on the outer side of the kiln body 25, and the large gear ring driving component 24 is used to drive the kiln body 25 to rotate circumferentially.

[0038] The material disturbing mechanism 3 is arranged in the kiln body 25, and further reference is made to Figure 4 and Figure 5 The material disturbance mechanism 3 includes a shoveling assembly, which includes a shoveling plate 310, a traction rope 311 and a gravity ball 312. A plurality of 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 shoveling side of the shoveling plate 310, and the gravity ball 312 is installed on the kiln body 25 through the traction rope 311;

[0039] When the shoveling plate 310 rotates to the shoveling position with the kiln body 25, 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 to the unloading position with the kiln body 25, the gravity ball 312 hangs down to the outside of the shoveling plate 310 due to gravity.

[0040] In the above embodiment, the kiln body 25 is heated by the electromagnetic heating assembly, thereby heating the material in the kiln body 25, and 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 reducer, a large gear ring and a small gear ring. The output end of the driving motor is connected to the small gear ring through the reducer. The large gear ring is arranged outside the kiln body, and the small gear ring and the large gear ring are meshed for transmission, so as to realize the slow rotation of the kiln body, thereby realizing the rotation of the kiln body 25 to turn over the ore inside. Exemplarily, the support roller support assembly 22 is arranged outside the kiln body 25 to provide auxiliary support for the rotation of the kiln body 25;

[0041] During the rotation of the kiln body 25, Figure 4 As shown, the kiln body 25 rotates counterclockwise, and the dotted line indicates the upper interface position of the ore in the kiln body 25. The shovel plate 310 rotates synchronously with the kiln body 25, thereby shoveling the ore near the inner wall of the kiln body 25 to move toward the upper interface of the ore, so that the ore near the center of the kiln body 25 falls by gravity and contacts the inner wall of the kiln body 25 at a close distance, thereby avoiding the accumulation of ore in the kiln body 25, resulting in uneven heating inside and outside, and affecting the drying and calcining effect;

[0042] Moreover, the gravity ball 312 first contacts the upper interface of the ore under the action of gravity. Figure 4 The gravity ball 312 at the upper left corner shown in the figure continues to rotate counterclockwise until the scraping plate 310 is at the scraping position, that is, Figure 4 At the position below the middle dotted line interface, the gravity ball 312 is squeezed by the ore to the corner position between the shoveling plate 310 and the inner wall of the kiln body 25, so that the gravity ball 312 is in close contact with the inner wall of the kiln body 25 and absorbs heat; as the shoveling plate 310 continues to rotate, the ore on the shoveling plate 310 gradually falls, and the gravity ball 312 droops to the outside of the shoveling plate 310 due to gravity. 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 the absorbed heat to dissipate heat, thereby improving the heat conduction to the ore at the upper interface position, and the shaking of the gravity ball 312 drives the flow of hot gas around it, thereby enhancing the convective heat exchange between the hot air flow and the material.

[0043] It should be noted that, please continue to refer to Figure 1 and Figure 2The electromagnetic heating assembly includes 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 rotates and fits with the kiln body 25. The coil of the electromagnetic induction coil drum 23 is electrically connected to the controller 231. The current intensity of the electromagnetic induction coil drum 23 is adjusted by the controller 231, so as to control the temperature in the kiln body 25.

[0044] The kiln bodies 25 are arranged in pairs, and the material disturbing mechanism 3 is arranged corresponding to the kiln body 25. The kiln tail 21 corresponding to one kiln body 25 is connected to the kiln head 26 corresponding to the other kiln body 25 through the material dropping pipe 211. Figure 2 As shown, the kiln bodies 25 arranged in pairs are stacked, and the ore material is fed through the feeding pipe 261 on the kiln head 26 corresponding to the upper kiln body 25, so that a drop pipe 211 is set below the kiln tail 21 corresponding to the upper kiln body 25, and a discharge pipe 27 is set at the kiln tail 21 corresponding to the lower kiln body 25. Through the double-return rotary kiln, different process treatments can be performed on the ore. For example, the kiln body 25 located at the upper side dries the ore in the kiln body 25, and the kiln body 25 located at the lower side calcines the ore in the kiln body 25. It only needs to control the temperature corresponding to the different processes in the kiln body 25.

[0045] In one embodiment, continue to refer to Figure 4 and Figure 5 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, so that the scraping portion of the scraping plate 310 scrapes materials.

[0046] Continue reading Figure 5 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;

[0047] When the scraping plate 310 is at the scraping position, Figure 4As shown, under the pressure of the ore, the abutment block 313 is located in the initial position, that is, the abutment block 313 is squeezed by the ore to stretch the first spring 314; as the shovel plate 310 continues to rotate to a position above the upper interface of the ore, that is, when the shovel plate 310 is located between the shoveling position and the unloading position, under the reset action of the first spring 314, the abutment block 313 moves in the direction away from the shovel plate 310 to the maximum displacement, at this time, the shoveled ore is supported and supported as the shovel plate 310 continues to rotate, and when the shoveling plate 310 is located at the unloading position, the gravity ball 312 hangs down to the outside of the shoveling plate 310 due to gravity, the traction rope 311 is straightened, and the traction rope 311 abuts against the abutment block 313 until the abutment block 313 is located at the initial position, and under the shaking of the gravity ball 312, the traction rope 311 dynamically abuts against the abutment block 313, so that the first spring 314 reciprocates and expands, thereby increasing the shaking period of the gravity ball 312, which is conducive to the flow and heat exchange of the hot air flow in the kiln body 25.

[0048] Embodiment 2

[0049] Based on Example 1, continue to refer to Figure 3 , Figure 4 and Figure 6 The material disturbance mechanism 3 also includes 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, and the input end of the main shaft 38 is transmission-connected with the output end of the driving assembly. A slot 316 is provided in the gravity ball 312, and a second spring 317 is provided 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 plug board 318. The plug board 318 is connected to the gravity ball through the slot 316. 312 sliding connection, wherein the plug plate 318 has a second magnetic block at one end away from the second spring 317. When the plug plate 318 is in the initial position, the outer end of the plug plate 318 does not protrude from the gravity ball 312. When the gravity ball 312 hangs down to the outside of the shovel 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 magnetic attraction of the first magnetic block 319. The plug plate 318 increases the disturbing contact surface of the gravity ball 312 on the hot air flow in the kiln body 25, thereby greatly improving the heat exchange efficiency of the hot air flow in the kiln body 25.

[0050] For example, see Figure 3 and Fig. 9The driving assembly is arranged in the kiln head 26, and the driving assembly includes 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 installed on the output shaft of the driving member 37, and the second driving gear 33 is meshed with the second driven gear 34. The second driven gear 34 is installed on the transition shaft 35. The main shaft 38 passes through one end of the inner cavity of the kiln head 26 and is fixedly connected to the transition shaft 35, so as to realize the rotation of the main shaft 38, wherein the rotation direction of the main shaft 38 is not limited.

[0051] It should be noted that, please continue to refer to Figure 3 The driving member 37 is a motor, which is placed in the inner cavity of the kiln head 26. A movable door 31 is hinged on one side of the kiln head 26, so that the staff can open the movable door 31 to inspect the driving components in the kiln head 26.

[0052] Continue reading Figure 3 , Figure 7 , Figure 8 and Fig. 9 The driving assembly also includes 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 also installed 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 with a swing rod 324. The eccentric part of the swing rod 324 is fixedly connected with a limiting rod 321. A limiting groove 325 is provided on the shift plate 320. The limiting rod 321 is connected to the shift plate 320 through the limiting groove 325. 20 sliding connection, the shift plate 320 is slidably connected in the main shaft 38, the two ends of the shift plate 320 are respectively fixedly connected with sliding rods 326, the slider 39 is provided with a sliding rail 327, the sliding rod 326 is slidably connected to the slider 39 through the sliding rail 327, the slider 39 is slidably connected to the main shaft 38 through the sliding groove 328, the first magnetic block 319 is embedded in the side of the slider 39 away from the main shaft 38, wherein the sliding direction of the slider 39 and the main shaft 38 is consistent with the axial centerline direction of the main shaft 38, and the sliding rail 327 is inclined.

[0053] In the above embodiment, the meshing transmission of the first driving gear 32 and the first driven gear 36 causes the swing rod 324 to drive the shift plate 320 to move left and right (by Figure 7 The slider 39 is driven by the slide bar 326 and the slide rail 327 to slide back and forth along the slide groove 328, and the outer surface of the slider 39 protrudes from the main shaft 38, so that when the slider 39 slides back and forth, the ore material adjacent to the main shaft 38 is rubbed 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 rocker arm 324, so that the slider 39 can slide back and forth at least once within the time it takes for the main shaft 38 to rotate one circle.

[0055] Exemplarily, the sliding directions of the sliders 39 arranged in pairs are opposite, and the inclined directions of the slide rails 327 provided on the sliders 39 arranged in pairs intersect.

[0056] For example, see Figure 7 , Figure 8 and Fig. 9 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, and 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. Figure 8 As shown, a plurality of guide rods 322 are provided, and the guide rods 322 are distributed in an array along the axial direction of the main shaft 38. Through the reciprocating movement of the shift plate 320, the guide rods 322 slide back and forth along the opening 323, so that the guide rods 322 guide the ore material adjacent to the main shaft 38, thereby promoting the movement of the ore material in the radial direction of the main shaft 38.

[0057] It should be noted that, when the electromagnetic heating double-return rotary kiln is in use, the kiln body 25 is heated by the electromagnetic heating assembly, and the kiln bodies 25 arranged in pairs 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 assembly 24, so that the materials inside are turned over, wherein the ore materials to be processed are fed into the kiln body 25 located at the top through the feed pipe 261;

[0058] As the kiln body 25 rotates slowly, a plurality of shovel plates 310 disposed on the inner wall of the kiln body 25 rotate synchronously with the kiln body 25, thereby shoveling the ore near the inner wall of the kiln body 25 toward the upper interface of the ore, so that the ore near the center of the kiln body 25 falls by gravity and contacts the inner wall of the kiln body 25 at a close distance. Moreover, the gravity ball 312 first contacts the upper interface of the ore under the action of gravity. Figure 4 The gravity ball 312 at the upper left corner shown in the figure continues to rotate counterclockwise until the scraping plate 310 is at the scraping position, that is, Figure 4At the position below the middle dotted line interface, the gravity ball 312 is squeezed by the ore to the corner position between the shoveling plate 310 and the inner wall of the kiln body 25, so that the gravity ball 312 is in close contact with the inner wall of the kiln body 25 and absorbs heat; as the shoveling plate 310 continues to rotate, the ore on the shoveling plate 310 gradually falls, and the gravity ball 312 droops to the outside of the shoveling plate 310 due to gravity 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 block 319 on one side of the main shaft 38 to the second magnetic block on the plug board 318, the plug board 318 is extended out of the gravity ball 312, thereby increasing the contact area of ​​the gravity ball 312 with the hot air flow in the kiln body 25 when it swings, thereby improving the heat exchange efficiency of the hot air flow in the kiln body 25;

[0060] In addition, under the drive of the driving member 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 rocker arm 324 through the limit rod 321 to drive the shift plate 320, so that the sliding bar 326 and the sliding rail 327 on the shift plate 320 can realize the reciprocating movement of the slider 39 along the axial center line direction of the main shaft 38, and the material near the main shaft 38 can be rubbed along the axial center line direction of the main shaft 38, and the guide rod 322 can be driven to reciprocate in the direction of the opening 323 through the shift plate 320, so as to guide the material at the main shaft 38 in the radial direction of the main shaft 38, thereby avoiding adhesion between ore materials.

[0061] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which 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 due to gravity to the outside of the shoveling plate (310).

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: One end of the scraping plate (310) away from the inner wall of the kiln body (25) has a scraping portion, and the scraping portion is bent toward the rotation direction of the kiln body (25).

4. The electromagnetic heating double-pass rotary kiln according to claim 3, characterized in that: 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.

5. The electromagnetic heating double-pass rotary kiln according to claim 4, 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).

6. The electromagnetic heating double-pass rotary kiln according to claim 5, 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).

7. The electromagnetic heating double-pass rotary kiln according to claim 6, 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.

8. The electromagnetic heating double-pass rotary kiln according to claim 7, characterized in that: The sliding directions of the sliding blocks (39) arranged in pairs are opposite.

9. The electromagnetic heating double-pass rotary kiln according to claim 8, 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).

10. The electromagnetic heating double-pass rotary kiln according to claim 9, 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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