Kiln calcining device

Abstract

The invention discloses a kiln calcining device, which relates to the field of kiln equipment and comprises: a kiln main body and a sealing door hingedly assembled at the open end of the kiln main body, a sliding track is slidingly arranged inside the kiln main body, and a charging box body is fixedly mounted on the upper end surface of the sliding track, the charging box body is used to receive the material to be calcined, and the charging box body can slide laterally inside the kiln main body through the sliding track. The invention can completely separate the magnetic material and non-magnetic material in the NdFeB waste through the magnetic separation unit at the front end of the kiln main body, and can completely and quickly transfer the magnetic material into the charging box body, and finally send it into the interior of the kiln main body for calcination treatment, that is, there will be no part of the magnetic material that cannot be transferred to the charging box and remains in the sleeve, and the non-magnetic material is directly discharged from the magnetic separation unit through the waste discharge unit, thereby ensuring the purity of the NdFeB waste calcination product.

Description

Technical Field

[0001] The invention relates to the field of kiln equipment, in particular to a kiln calcining device. Background Art

[0002] Kilns can be divided into open flame kilns and electric kilns. The former calcines the materials in the kiln by flame combustion, while the latter calcines the materials in the kiln by resistance wire heating.

[0003] A high-temperature calcination kiln and method for NdFeB waste are described in a public technical document (CN118936068B). In the public scheme, a scraper 23 scrapes the surface of an electromagnetic roller 15 in a rotating state, so that the magnetic material magnetically adsorbed on the surface of the electromagnetic roller 15 can fall into a collection box, thereby separating the magnetic material and non-magnetic material in the NdFeB waste, that is, the purity of the calcined product of the NdFeB waste can be improved; However, in the public scheme, in order for the scraper to easily peel off the magnetic material magnetically attracted to the surface of the electromagnetic roller 15, the magnetic force of the electromagnetic roller must be relatively small. In this case, when the mixed waste is poured from top to bottom, the magnetic material in the mixed waste will be subjected to a reaction force greater than the magnetic force exerted by the electromagnetic roller due to the impact on the electromagnetic roller 15, and the magnetic material will bounce off the surface of the electromagnetic roller 15; if the magnetic force of the electromagnetic roller is relatively large, the magnetic material will be piled up together as the scraper moves the magnetic material adsorbed on the surface of the electromagnetic roller. At the same time, due to the mutual attraction of the magnetic force, it will be difficult for the scraper to peel off the magnetic material. Therefore, in the public scheme, the separation effect of the magnetic material in the NdFeB waste that needs to be calcined is not good, and the pre-treatment time of the NdFeB waste that needs to be put into the kiln for calcination is relatively long. Summary of the invention

[0004] The object of the present invention is to provide a kiln calcining device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a kiln calcining device, comprising: a kiln main body and a sealed door hingedly assembled at the open end of the kiln main body, a sliding track is slidably arranged inside the kiln main body, and a charging box is fixedly mounted on the upper end surface of the sliding track, the charging box is used to receive the calcined material, the charging box can slide laterally inside the kiln main body through the sliding track, the charging box can be completely accommodated in the interior of the kiln main body, and can also be completely extended from the interior of the kiln main body, a hanging plate is fixedly mounted on the top of the kiln main body, and a magnetic separation unit is hung at one end of the hanging plate away from the kiln main body, the magnetic separation unit is used to separate magnetic substances from non-magnetic substances in NdFeB waste, the magnetic separation unit is located in front of the open end of the kiln main body, and the magnetic separation unit will not hinder the opening and closing of the sealed door; The waste discharge unit is used to discharge the non-magnetic material in the magnetic separation unit, and the waste discharge unit is distributed outside the magnetic separation unit.

[0006] Preferably, the magnetic separation unit includes a mounting rod fixedly arranged below the end of the hanging plate away from the kiln body, the outer surface of the mounting rod is sleeved with two symmetrically distributed limit plates, and each of the limit plates is fixedly arranged with a fixing ring at one end away from the mounting rod, a turntable is rotatably arranged in the fixing ring, and a sleeve is fixedly arranged between the two turntables, the sleeve and the turntable are coaxially arranged, the cross-section of the turntable is stepped, and the inner diameter of the turntable is smaller than the inner diameter of the sleeve, and a plurality of circumferentially equidistantly distributed assembly rods are distributed on the outside of the sleeve, and sliding blocks are fixedly sleeved at both ends of the assembly rod, and the two sliding blocks are respectively It is radially slidably assembled inside the two turntables, and a first spring is fixedly arranged between the end of each sliding block away from the axis of the turntable and the turntable. A plurality of magnetic blocks equidistantly distributed in a straight line are fixedly sleeved on the outer surface of each assembly rod, and the magnetic block slides in contact with the sleeve. The end surface of the magnetic block close to the sleeve is an arc surface, and the diameter of the arc surface is consistent with the outer diameter of the sleeve. An arc-edge protrusion is also fixedly arranged on the outer surface of each fixing ring, and the arc-edge protrusion is located at the top of the fixing ring. The arc-edge protrusion slides in contact with the turntable, and a driving component is also arranged on the outside of the turntable, and a receiving component is also arranged on the inside of the sleeve.

[0007] Preferably, there are two mounting rods, and the two limit plates are slidably assembled on the outer surfaces of the two mounting rods at the same time, the driving component includes a rotating column rotatably mounted between the two limit plates, the outer surface of at least one of the turntables is fixedly provided with a plurality of teeth equidistantly distributed around the circumference, the outer surface of the rotating column is fixedly sleeved with a driving gear, and the driving gear is meshed with the turntable through the teeth, the external fixed frame of one of the limit plates is provided with a motor, the motor is located on one end surface of the two limit plates away from each other, the output end of the motor is fixedly assembled with one end of the rotating column through a coupling, and the other end of the rotating column is also provided with a toggle assembly.

[0008] Preferably, the toggle assembly includes a connecting disk fixedly arranged on an end portion of the rotating column away from the motor, and the connecting disk and the rotating column are coaxially arranged, a plurality of arc-shaped triangular blocks equidistantly distributed in a circle are fixedly arranged on the end of the connecting disk away from the rotating column, an extension rod is fixedly mounted on one end of the two mounting rods close to the connecting disk, the connecting disk is located between the extension rod and the limit plate, and a dome column is fixedly arranged on one end of the extension rod close to the connecting disk, the exposed end of the dome column is slidably arranged with the inclined surface of the arc-shaped triangular block, a baffle is also fixedly arranged between the two mounting rods, and the baffle is located between the two limit plates, and a second spring is also fixedly arranged between the baffle and the limit plate.

[0009] Preferably, the length of the assembly rod is greater than the distance between the two arc-edge protrusions, so as to ensure that when the assembly rod rotates with the turntable, the end of the assembly rod can be lifted by the arc-edge protrusion.

[0010] Preferably, the receiving component includes a receiving box body located inside the sleeve, and the top of the receiving box body is open, the receiving box body is used to receive magnetic materials, and a connecting rod is fixedly provided at one end of the receiving box body away from the kiln body, the connecting rod has axial movement and rotation functions, the moving trajectory of the connecting rod coincides with the axis of the sleeve, and the rotation angle of the connecting rod is greater than ninety degrees and not more than one hundred and eighty degrees.

[0011] Preferably, the waste discharge unit includes at least one interlocking plate movably mounted on the outside of the sleeve, the inner and outer diameters of the interlocking plate are consistent with the inner and outer diameters of the sleeve, a rotating cylinder is distributed on the outside of each of the interlocking plates, and both ends of the rotating cylinder are rotatably embedded in the interior of the turntable, and at least one connecting frame is fixedly arranged between the rotating cylinder and the interlocking plate, the connecting frame and the rotating cylinder are distributed on the outside of the sleeve, and an elastic limiting component is also arranged inside each of the rotating cylinders, and the elastic limiting component is used to limit the rotating cylinder from self-rotation.

[0012] Preferably, the elastic limiting component includes a sliding rod slidably mounted on an end of the rotating drum away from the kiln body, a third spring is provided at the end of the sliding rod extending into the interior of the rotating drum, the third spring is compressed between the sliding rod and the rotating drum, and the third spring is not compressed to the maximum value, a latch is fixedly provided on the outer surface of the end of the sliding rod extending into the interior of the rotating drum, and an oblique arc groove slidably mounted with the latch is provided on the outer surface of the rotating drum, there are multiple oblique arc grooves and latches, and the multiple oblique arc grooves and latches are equidistantly distributed around the circumference, a sliding ring is fixedly provided on the exposed ends of several sliding rods, and the sliding ring is slidably mounted on the outside of the fixed ring, and a pushing assembly is provided between the connecting rod and the sliding ring.

[0013] Preferably, the pushing assembly includes a frame rod vertically fixedly mounted on the outside of the connecting rod, and the other end of the frame rod is fixedly provided with a push block for pushing the sliding ring. When the connecting rod drives the receiving box body to completely leave the interior of the sleeve, the connecting rod continues to move, allowing the push block to push the sliding ring.

[0014] Preferably, the diameter of the inscribed circle of several of the rotating drums is larger than the diameter of the circumscribed circle of the arc-edge protrusion.

[0015] Preferably, the diameters of several of the inscribed circles are larger than the diameter of the circumscribed circle.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention can completely separate the magnetic material and non-magnetic material in the NdFeB waste through the magnetic separation unit at the front end of the kiln main body, and can completely and quickly transfer the magnetic material to the charging box, and finally send it into the interior of the kiln main body for calcination treatment, that is, there will be no part of the magnetic material that cannot be transferred to the charging box and remains in the sleeve, and the non-magnetic material is directly discharged from the magnetic separation unit through the waste discharge unit, thereby ensuring the purity of the NdFeB waste calcination product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the position distribution structure of the sleeve and the receiving box body of the present invention; Figure 3 It is a schematic diagram of the structure of the fixing ring and the arc edge convex block of the present invention; Figure 4 It is a cross-sectional view of the rotating disk and the sleeve of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle; Figure 6 This is a schematic diagram of the second spring and baffle structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of point B in the middle; Figure 8 It is a schematic diagram of the structure of the rotating drum, the connecting frame and the interlocking plate of the present invention; Fig. 9 It is a schematic diagram of the structure of the sliding rod and the sliding sleeve ring of the present invention; Fig.10 It is a schematic diagram of the structure of the oblique arc groove, the latch pin and the third spring of the present invention.

[0018] In the figure: 1. kiln body; 2. sealing door; 3. sliding track; 4. charging box body; 5. lifting plate; 6. mounting rod; 7. limit plate; 8. fixing ring; 9. sleeve; 10. turntable; 11. meshing teeth; 12. rotating column; 13. driving gear; 14. motor; 15. assembly rod; 16. magnetic block; 17. arc edge protrusion; 18. sliding block; 19. first spring; 20. receiving box body; 21. connecting rod; 22. frame rod; 23. push block; 24. extension rod; 25. connecting plate; 26. arc triangle block; 27. dome column; 28. second spring; 29. ​​baffle; 30. interlocking plate; 31. connecting frame; 32. rotating drum; 33. sliding sleeve ring; 34. sliding rod; 35. oblique arc groove; 36. latch; 37. third spring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example 1: Please refer to Figure 1-Figure 6 A kiln calcining device shown in the figure includes: a kiln main body 1 and a sealing door 2 hingedly assembled at the open end of the kiln main body 1, a sliding track 3 is slidably arranged inside the kiln main body 1, and a charging box 4 is fixedly mounted on the upper end surface of the sliding track 3, and the charging box 4 is used to receive the calcined material, and the charging box 4 can slide laterally inside the kiln main body 1 through the sliding track 3, and the charging box 4 can be completely accommodated in the interior of the kiln main body 1, and can also be completely extended from the interior of the kiln main body 1, a hanging plate 5 is fixedly mounted on the top of the kiln main body 1, and a magnetic separation unit is hung on the end of the hanging plate 5 away from the kiln main body 1, and the magnetic separation unit is used to separate the magnetic substance and the non-magnetic substance in the NdFeB waste, and the magnetic separation unit is located in front of the open end of the kiln main body 1, and the magnetic separation unit will not hinder the opening and closing of the sealing door 2.

[0021] The magnetic separation unit includes a mounting rod 6 fixedly arranged below the end of the lifting plate 5 away from the kiln body 1, the outer surface of the mounting rod 6 is sleeved with two symmetrically distributed limit plates 7, and each limit plate 7 is fixedly provided with a fixing ring 8 at one end away from the mounting rod 6, a turntable 10 is rotatably arranged in the fixing ring 8, and a sleeve 9 is fixedly arranged between the two turntables 10, the sleeve 9 and the turntable 10 are coaxially arranged, the cross section of the turntable 10 is stepped, and the inner diameter of the turntable 10 is smaller than the inner diameter of the sleeve 9, and a plurality of circumferentially equidistantly distributed assembly rods 15 are distributed outside the sleeve 9, and sliding blocks 18 are fixedly sleeved at both ends of the assembly rod 15, and the two sliding blocks 18 are radially The sliding assembly is inside the two turntables 10, and a first spring 19 is fixedly arranged between the end of each sliding block 18 away from the axis of the turntable 10 and the turntable 10. The outer surface of each assembly rod 15 is fixedly sleeved with a plurality of magnetic blocks 16 distributed equidistantly in a straight line. The magnetic block 16 slides in fit with the sleeve 9. The end surface of the magnetic block 16 close to the sleeve 9 is an arc surface, and the diameter of the arc surface is consistent with the outer diameter of the sleeve 9. An arc-edge protrusion 17 is also fixedly arranged on the outer surface of each fixed ring 8, and the arc-edge protrusion 17 is located at the top of the fixed ring 8. The arc-edge protrusion 17 slides in fit with the turntable 10. A driving component is also arranged on the outside of the turntable 10, and a receiving component is also arranged on the inside of the sleeve 9.

[0022] There are two mounting rods 6, and two limit plates 7 are slidably assembled on the outer surfaces of the two mounting rods 6 at the same time. The driving component includes a rotating column 12 rotatably mounted between the two limit plates 7. The outer surface of at least one turntable 10 is fixedly provided with a plurality of circumferentially equidistantly distributed teeth 11. The outer surface of the rotating column 12 is fixedly sleeved with a driving gear 13, and the driving gear 13 is meshed with the turntable 10 through the teeth 11. The external fixed frame of one of the limit plates 7 is provided with a motor 14, and the motor 14 is located on one end surface of the two limit plates 7 away from each other. The output end of the motor 14 is fixedly assembled with one end of the rotating column 12 through a coupling, and a toggle assembly is also provided at the other end of the rotating column 12.

[0023] The length of the assembly rod 15 is greater than the distance between the two arc-edge protrusions 17, thereby ensuring that when the assembly rod 15 rotates with the turntable 10, its end can be lifted by the arc-edge protrusion 17. If the assembly rod 15 cannot contact the arc-edge protrusion 17, the assembly rod 15 moved to the highest point and the magnetic block 16 on its surface cannot move away from the sleeve 9, and the magnetic attraction of the magnetic material cannot be cancelled.

[0024] The receiving component includes a receiving box body 20 located inside the sleeve 9, and the top of the receiving box body 20 is open. The receiving box body 20 is used to receive magnetic materials. A connecting rod 21 is fixedly arranged at one end of the receiving box body 20 away from the kiln body 1. The connecting rod 21 has axial movement and rotation functions. The moving trajectory of the connecting rod 21 coincides with the axis of the sleeve 9. The rotation angle of the connecting rod 21 is greater than ninety degrees and does not exceed one hundred and eighty degrees. A motor is arranged at the end of the connecting rod 21 away from the kiln body 1, and the output end of the motor is fixed to the connecting rod 21. A long-range cylinder is fixedly mounted on the top of the lifting plate 5, and the output end of the long-range cylinder is assembled with the fixed part of the motor through a frame plate.

[0025] Example 2: Please refer to the attached Figure 6 and Figure 7 This embodiment is a further implementation of the above embodiment 1. The toggle assembly includes a connecting disk 25 fixedly arranged at one end of the rotating column 12 away from the motor 14, and the connecting disk 25 and the rotating column 12 are coaxially arranged. The end of the connecting disk 25 away from the rotating column 12 is fixedly provided with a plurality of arc-shaped triangular blocks 26 equidistantly distributed around the circumference. The arc-shaped triangular blocks 26 are in the shape of a right-angled triangle, and the inclined surface is an inclined arc surface. The ends of the two mounting rods 6 close to the connecting disk 25 are jointly fixed with an extension rod 24. The connecting disk 25 is located between the extension rod 24 and the limiting plate 7, and the end of the extension rod 24 close to the connecting disk 25 A dome column 27 is fixedly arranged, and the exposed end of the dome column 27 is slidably arranged with the inclined surface of the arc-shaped triangular block 26. A baffle plate 29 is also fixedly arranged between the two mounting rods 6, and the baffle plate 29 is located between the two limit plates 7. A second spring 28 is also fixedly arranged between the baffle plate 29 and the limit plate 7. There are two second springs 28, which are respectively sleeved on the outside of the two mounting rods 6. There are two dome columns 27, and the number of arc-shaped triangular blocks 26 is a multiple of the dome columns 27. The simultaneous restriction of several arc-shaped triangular blocks 26 by two dome columns 27 can ensure the balance of force on the connecting disk 25.

[0026] Example 3: Please refer to the attached Figure 8-Figure 10 This embodiment is a further explanation of the first embodiment. The waste discharge unit includes at least one embedded plate 30 movably mounted on the outside of the sleeve 9. The inner and outer diameters of the embedded plate 30 are consistent with the inner and outer diameters of the sleeve 9. A rotating cylinder 32 is distributed on the outside of each embedded plate 30, and both ends of the rotating cylinder 32 are rotatably embedded in the inside of the turntable 10. At least one connecting frame 31 is fixedly arranged between the rotating cylinder 32 and the embedded plate 30. The connecting frame 31 and the rotating cylinder 32 are distributed on the outside of the sleeve 9. An elastic limiting component is also arranged inside each rotating cylinder 32. The elastic limiting component is used to limit the rotating cylinder 32 from self-rotation.

[0027] The elastic limiting component includes a sliding rod 34 slidably mounted on an end of the rotating drum 32 away from the kiln body 1, and a third spring 37 is arranged at one end of the sliding rod 34 extending into the rotating drum 32. The third spring 37 is compressed between the sliding rod 34 and the rotating drum 32, and the third spring 37 is not compressed to the maximum value. A latch 36 is fixedly arranged on the outer surface of one end of the sliding rod 34 extending into the rotating drum 32, and an oblique arc groove 35 slidably mounted with the latch 36 is opened on the outer surface of the rotating drum 32. There are multiple oblique arc grooves 35 and latches 36, and the multiple oblique arc grooves 35 and latches 36 are equidistantly distributed around the circumference. The design of multiple oblique arc grooves 35 and latches 36 can increase the sliding rod 34 in the rotating drum. In order to ensure the stability of the movement inside the cylinder 32, the exposed ends of several sliding rods 34 are fixedly provided with a sliding ring 33, and the sliding ring 33 is slidably sleeved on the outside of the fixed ring 8. When several sliding rods 34 are pushed at the same time by the sliding ring 33, since the sliding rods 34 cannot rotate inside the rotating cylinder 32, the sliding rods 34 can continue to compress the third spring 37 at this time, and through the sliding engagement of the pin 36 and the oblique arc groove 35, the rotating cylinder 32 can also swing a certain angle with the engaging plate 30 through the connecting frame 31, so that the engaging plate 30 is separated from the sleeve 9, thereby allowing an opening to appear on the surface of the sleeve 9, and a pushing assembly is provided between the connecting rod 21 and the sliding ring 33.

[0028] The pushing assembly includes a frame rod 22 which is vertically fixed on the outside of the connecting rod 21, and a push block 23 which pushes the sliding ring 33 is fixedly provided at the other end of the frame rod 22. When the connecting rod 21 drives the receiving box body 20 to completely leave the interior of the sleeve 9, the connecting rod 21 continues to move, and the push block 23 pushes the sliding ring 33 to transfer the magnetic material inside the sleeve 9 to the interior of the loading box body 4. During the continuous movement of the connecting rod 21, the sliding ring 33 can be triggered to separate the engaging plate 30 from the sleeve 9.

[0029] The diameter of the inscribed circle of the plurality of rotating drums 32 is larger than the diameter of the circumscribed circle of the arc-edge protrusion 17 , so as to prevent the rotating drums 32 from being blocked by the arc-edge protrusion 17 when rotating along with the turntable 10 .

[0030] Working principle: Before feeding the NdFeB waste into the loading box 4 for calcination, it is necessary to first pour the NdFeB waste into the inside of the sleeve 9. Since the turntable 10 has a certain blocking effect on the two ends of the sleeve 9, the NdFeB waste will not leak from the inside of the sleeve 9. At the same time, the receiving box 20 is kept in the center of the sleeve 9, and then the motor 14 is started. The motor 14 can make the two turntables 10 rotate with the sleeve 9 between the two fixed rings 8 through the engagement of the driving gear 13 and the meshing teeth 11. The fixed ring 8, sleeve 9, and turntable 10 are all made of plastic material. When several assembly rods 15 rotate with the magnetic blocks 16 on their surfaces, since the magnetic blocks 16 are in contact with the outer wall of the sleeve 9, under the action of magnetic attraction, the NdFeB can be passed through the sleeve 9. The magnetic material in the NdFeB waste is attracted and can move with the magnetic block 16, and the magnetic block 16 can move toward the top of the receiving box body 20 with the magnetic material. When the assembly rod 15 is about to move to the highest point with the magnetic block 16, the assembly rod 15 will be lifted by the arc edge protrusion 17, so that the magnetic block 16 is away from the sleeve 9. At this time, the magnetic material transferred to the high point will be less and less affected by the magnetic block 16, causing the magnetic material to fall freely under the action of gravity, and the magnetic material can be transferred to the inside of the receiving box body 20. In this way, all the magnetic materials in the NdFeB waste can be accurately transferred to the inside of the receiving box body 20, and there will be no part of the magnetic material left in the sleeve 9, thereby ensuring the accuracy and effectiveness of the separation; In the above scheme, since the magnetic block 16 on the assembly rod 15 is of a separated design, the magnetic block 16 will not attract a large amount of magnetic material to accumulate, resulting in non-magnetic material mixed in the magnetic material, thereby preventing the non-magnetic material from entering the receiving box body 20. In addition, during the rotation of the rotating column 12, the arc-shaped triangular block 26 can frequently push the dome column 27. At the same time, under the action of the baffle 29 and the second spring 28, the limit plate 7 that has been pushed a certain distance can be instantly elastically reset, so that all structures installed between the two limit plates 7 can be frequently elastically shaken. Through the influence of shaking, when the magnetic block 16 rises with the magnetic material, due to inertia, the non-magnetic impurities mixed in the magnetic material can be further shaken out.

[0031] After all the magnetic materials are transferred to the interior of the receiving box body 20, the receiving box body 20 is moved out of the sleeve 9 by driving the connecting rod 21 to advance and rotate, and the magnetic materials in the receiving box body 20 are poured into the interior of the charging box body 4. At this time, the connecting rod 21 can continue to advance, and push the sliding ring 33 through the push block 23, so that the multiple sliding rods 34 extend into the interior of the rotating drum 32. The inclined arc groove 35 is restricted by the latch 36, so that the rotating drum 32 deflects a certain angle with the embedded plate 30, and the embedded plate 30 is separated from the sleeve 9. In this way, when the turntable 10 rotates with the sleeve 9, the non-magnetic materials in the sleeve 9 can be completely poured out through the opening formed by the separation of the embedded plate 30 and the sleeve 9. It should be noted that the engaging plate 30 and the sleeve 9 are made of the same material.

[0032] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A kiln calcining device, characterized in that: include: A kiln body (1) and a sealing door (2) hingedly mounted on an open end of the kiln body (1); a sliding track (3) is slidably arranged inside the kiln body (1); a charging box (4) is fixedly mounted on the upper end surface of the sliding track (3); the charging box (4) is used to receive materials to be calcined; a hanging plate (5) is fixedly mounted on the top of the kiln body (1); and a magnetic separation unit is hung on one end of the hanging plate (5) away from the kiln body (1); the magnetic separation unit is used to separate magnetic substances from non-magnetic substances in NdFeB waste; The waste discharge unit is used to discharge the non-magnetic material in the magnetic separation unit, and the waste discharge unit is distributed outside the magnetic separation unit.

2. A kiln calcining device according to claim 1, characterized in that: The magnetic separation unit comprises a mounting rod (6) fixedly arranged below the hanging plate (5); the outer surface of the mounting rod (6) is sleeved with two symmetrically distributed limiting plates (7); and each limiting plate (7) is fixedly provided with a fixing ring (8) at one end away from the mounting rod (6); a rotating disk (10) is rotatably arranged inside the fixing ring (8); and a sleeve (9) is fixedly arranged between the two rotating disks (10); and a plurality of circumferentially equidistantly distributed assembly rods (15) are distributed outside the sleeve (9); and sliding blocks (18) are fixedly sleeved at both ends of the assembly rod (15), and the two sliding blocks (18) are respectively The rotating disk (10) is radially slidably assembled inside the two rotating disks (10); a first spring (19) is fixedly arranged between the end of each sliding block (18) away from the axis of the rotating disk (10) and the rotating disk (10); a plurality of magnetic blocks (16) are fixedly sleeved on the outer surface of each assembly rod (15); the magnetic blocks (16) are slidably fitted with the sleeve (9); an arc-edge protrusion (17) is fixedly arranged on the outer surface of each fixing ring (8); and the arc-edge protrusion (17) is located on the top of the fixing ring (8); a driving component is also arranged outside the rotating disk (10); and a receiving component is also arranged inside the sleeve (9).

3. A kiln calcining device according to claim 2, characterized in that: The number of the mounting rods (6) is two, and the two limit plates (7) are slidably mounted on the outer surfaces of the two mounting rods (6) at the same time. The driving component comprises a rotating column (12) rotatably mounted between the two limit plates (7). The outer surface of at least one of the turntables (10) is fixedly provided with a plurality of teeth (11) equidistantly distributed in a circumference. The outer surface of the rotating column (12) is fixedly sleeved with a driving gear (13), and the driving gear (13) is meshedly assembled with the turntable (10) through the teeth (11). An electric motor (14) is fixedly mounted on the outside of one of the limit plates (7), and the output end of the electric motor (14) is fixedly assembled with one end of the rotating column (12), and a toggle assembly is also arranged at the other end of the rotating column (12).

4. A kiln calcining device according to claim 3, characterized in that: The toggle assembly comprises a connecting disk (25) fixedly arranged at an end of the rotating column (12) away from the motor (14); a plurality of arc-shaped triangular blocks (26) equidistantly distributed in a circumference are fixedly arranged at one end of the connecting disk (25) away from the rotating column (12); an extension rod (24) is fixedly mounted on one end of the two mounting rods (6) close to the connecting disk (25); a dome column (27) is fixedly arranged on one end of the extension rod (24) close to the connecting disk (25); an exposed end of the dome column (27) is slidably arranged with an inclined surface of the arc-shaped triangular block (26); a baffle plate (29) is fixedly arranged between the two mounting rods (6); and a second spring (28) is fixedly arranged between the baffle plate (29) and the limit plate (7).

5. A kiln calcining device according to claim 2, characterized in that: The length of the assembly rod (15) is greater than the distance between the two arc-edge protrusions (17).

6. A kiln calcining device according to claim 2, characterized in that: The receiving component comprises a receiving box body (20) located inside the sleeve (9), and the top of the receiving box body (20) is open. A connecting rod (21) is fixedly provided at one end of the receiving box body (20) away from the kiln body (1), and the connecting rod (21) has axial movement and rotation functions.

7. A kiln calcining device according to claim 6, characterized in that: The waste discharge unit comprises at least one engaging plate (30) movably mounted on the outside of the sleeve (9), a rotating drum (32) is distributed on the outside of each of the engaging plates (30), and both ends of the rotating drum (32) are rotatably embedded in the interior of the turntable (10), a connecting frame (31) is fixedly arranged between the rotating drum (32) and the engaging plate (30), and an elastic limiting component is also arranged inside each of the rotating drums (32), and the elastic limiting component is used to limit the rotating drum (32) from self-rotation.

8. A kiln calcining device according to claim 7, characterized in that: The elastic limiting component comprises a sliding rod (34) slidably mounted on an end of the rotating drum (32) away from the kiln body (1); a third spring (37) is arranged at one end of the sliding rod (34) extending into the interior of the rotating drum (32); a latch (36) is fixedly arranged on the outer surface of the end of the sliding rod (34) extending into the interior of the rotating drum (32); and an oblique arc groove (35) slidably mounted with the latch (36) is provided on the outer surface of the rotating drum (32); a plurality of exposed ends of the sliding rods (34) are fixedly mounted with a sliding ring (33), and the sliding ring (33) is slidably mounted on the outside of the fixed ring (8); and a push assembly is arranged between the connecting rod (21) and the sliding ring (33).

9. A kiln calcining device according to claim 8, characterized in that: The pushing assembly comprises a frame rod (22) vertically fixedly mounted outside the connecting rod (21), and a push block (23) for pushing the sliding sleeve ring (33) is fixedly arranged at the other end of the frame rod (22).

10. The kiln calcining device according to claim 8, characterized in that: The diameter of the inscribed circle of a plurality of the rotating drums (32) is greater than the diameter of the circumscribed circle of the arc-edge protrusion (17).

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