Rotary kiln for magnetic powder presintering

Abstract

The utility model relates to the technical field of rotary kilns, and discloses a rotary kiln for magnetic powder presintering, which comprises a base station, two symmetrically arranged racks are mounted on the base station, two symmetrically arranged bases are mounted on the racks, the bases are U-shaped, first bearing seats are mounted on the bases, and second bearing seats are mounted on the first bearing seats. A roller is rotationally connected to the first bearing seat, a hearth is connected to the roller in a rolling mode, a guide wheel is connected to the side wall of the second pipe section of the hearth, and the guide wheel is matched with the roller; the second pipe section on one side is connected with a chain wheel, and the chain wheel is used for being connected with a driving motor; a track is installed on the base table, two symmetrically-arranged moving mechanisms are installed on the track, furnace covers are installed on the moving mechanisms, and the two furnace covers can cover a hearth after being buckled; the rotary kiln can improve hearth stability, sintering quality and operation efficiency, save energy and guarantee safety.

Description

TECHNICAL FIELD

[0001] The utility model relates to rotary kiln technical field, especially relates to a magnetic material powder pre-sintering rotary kiln. BACKGROUND

[0002] Rotary kiln is a kind of calcination, roasting or drying granular and powder material thermal equipment.It is the common unit equipment of powder material including catalyst, molecular sieve, kaolin and other mineral materials etc., and rotary kiln can increase the heating area of material and improve the firing efficiency of material during heat processing.

[0003] At present, the existing rotary kiln equipment is various, but its general purpose is to realize mass production, large or low-temperature heat processing.In the experimental stage of some materials, the quantity and heat processing requirement of materials placed in rotary kiln are not fixed, and the existing magnetic material powder pre-sintering rotary kiln has the technical problems that the hearth support is unstable, the structure layout is unreasonable, leading to easy shaking during operation, and the sealing of hearth two ends and the driving structure cooperation are not good, and the furnace cover cannot conveniently cover the hearth to ensure the sealing performance of sintering environment. SUMMARY

[0004] The utility model discloses a magnetic material powder pre-sintering rotary kiln, solves the problem in the above background art.

[0005] The utility model discloses the technical scheme as follows: a kind of magnetic material powder pre-sintering rotary kiln, including abutment, 2 two symmetrical arrangements of rack are installed on the abutment, 2 two symmetrical arrangements of pedestal are installed on the rack, the shape of the pedestal is U type, first bearing seat is installed on the pedestal, rotatingly connected with roller on the first bearing seat, the roller is rotatably connected with hearth on the roller, the hearth is composed of first pipe section, taper pipe section, second pipe section, the first pipe section is located in the middle, the two ends of the first pipe section are connected with taper pipe section, the other end of the taper pipe section is connected with second pipe section, the diameter of the second pipe section is less than the diameter of first pipe section;The sidewall of the second pipe section is connected with guide pulley, and the guide pulley is matched with the roller;Second pipe section of one side is connected with chain wheel, and the chain wheel is used to connect driving motor;Rail is installed on the abutment, 2 two symmetrical arrangements of moving mechanism are installed on the rail, furnace cover is installed on the moving mechanism, and 2 the furnace cover can cover hearth after buckling.

[0006] The utility model discloses a beneficial effect lies in: the magnetic material powder pre-sintering rotary kiln realizes the stable rotation of hearth through the cooperation of symmetrical frame, roller and guide, the base platform of cross -shaped channel steel welding and the rectangular frame of the steel sheet of top surface cover steel sheet enhances the overall structural strength, and the work type seat track cooperation wheel and the gear wheel guarantee that the mobile mechanism accurately drives the furnace cover to move, the furnace cover adopts arc refractory brick and semicircular lining to improve the heat insulation effect, and the asbestos strip in the cover plate wire slot, rubber air bag and first, second, third board cooperation and bolt base positioning bolt respectively from different dimensions strengthen sealing and fixed, the heating element of equiangular arrangement and extension in the lining realizes even supplementary heating and reduces the heat loss in combination with the outside heat shield, and the embodiment two replaces artificial installation positioning bolt through the cooperation of first, second plug -in board and semicircular cylinder, tension spring, second telescopic link, realizes the quick locking and opening of furnace cover, and the overall structure adapts the demand of magnetic material powder pre-sintering each stage, effectively improves the sintering quality, saves the energy, guarantees the operation safety and improves the operation efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 It is the three-dimensional structure schematic diagram of furnace cover opening of the utility model.

[0008] Figure 2 It is the main view structural schematic diagram of roller.

[0009] Figure 3 It is the three-dimensional structure schematic diagram of furnace cover closing of the utility model.

[0010] Figure 4 It is the side view structural schematic diagram of hearth.

[0011] Figure 5 It is the three-dimensional structure schematic diagram of base platform.

[0012] Figure 6 It is the three-dimensional structure schematic diagram of frame.

[0013] Figure 7 It is the three-dimensional structure schematic diagram of mobile mechanism.

[0014] Figure 8 It is the three-dimensional structure schematic diagram of gear surface.

[0015] Figure 9 It is the three-dimensional structure schematic diagram of furnace cover.

[0016] Figure 10 It is the main view sectional structure schematic diagram of heating element.

[0017] Figure 11 It is the three-dimensional structure schematic diagram of bolt base.

[0018] Figure 12 It is the three-dimensional structure schematic diagram of cover body.

[0019] Figure 13 This is a schematic diagram of the front view section structure of the second plate.

[0020] Figure 14 This is a schematic diagram of the three-dimensional structure with internal support.

[0021] Figure 15 This is a three-dimensional structural diagram of the first insert plate.

[0022] Figure 16 This is a top-view cross-sectional structural diagram of the second insert plate.

[0023] Figure 17 This is a schematic diagram of the three-dimensional structure of the first semi-cylinder.

[0024] Figure 18 This is a schematic diagram of the three-dimensional structure of the second semi-cylinder.

[0025] In the diagram: 1. Base; 2. Frame; 3. Base; 4. First bearing seat; 5. Roller; 6. Furnace chamber; 7. First pipe section; 8. Conical pipe section; 9. Second pipe section; 10. Guide wheel; 11. Sprocket; 12. Drive motor; 13. Track; 14. Moving mechanism; 15. Furnace cover; 16. Basic frame; 17. First steel plate; 18. Rectangular frame; 19. Second steel plate; 20. Toothed surface; 21. Chassis; 22. Carrier plate; 23. Wheel seat; 24. Wheel; 25. Toothed wheel; 26. First telescopic rod; 27. Cylinder seat; 28. Cover; 29. ​​Refractory brick; 30. Lining; 31. Cover plate; 32. Arc groove; 33. Heating element; 34. Isolation 35. Heat shield; 36. Cable tray; 37. Asbestos strip; 38. Bolt seat; 39. Positioning bolt; 40. First plate; 41. Rubber airbag; 42. Inner support; 43. Through groove; 44. Air nozzle; 45. Second plate; 46. Third plate; 47. Support; 48. First inclined surface; 49. First plane; 50. Second inclined surface; 51. First semi-circular groove; 52. First semi-cylinder; 53. Second plate; 54. Third inclined surface; 55. Second plane; 56. Fourth inclined surface; 57. Second semi-circular groove; 58. Second semi-cylinder; 59. Rotating plate; 60. Rectangular groove; 61. Tension spring; 62. Bracket; 63. Second telescopic rod. Detailed Implementation

[0026] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0027] In the description of the utility model, it is understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0028] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh", "eighth", "ninth", "tenth" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0029] In the description of the utility model, it should be explained that, unless otherwise expressly specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, and the specific meaning of the above terms in the utility model can be understood according to the specific circumstances for ordinary skilled persons in the art.

[0030] As Figures 1-4As shown, embodiment one, a magnetic powder pre-sintering rotary kiln, comprising a base 1, two symmetrically arranged racks 2 are installed on the base 1, two symmetrically arranged bases 3 are installed on the rack 2, the shape of the base 3 is U-shaped, a first bearing seat 4 is installed on the base 3, a roller 5 is rotatably connected to the first bearing seat 4, a hearth 6 is rollingly connected to the roller 5, the hearth 6 is composed of a first pipe section 7, a tapered pipe section 8 and a second pipe section 9, the first pipe section 7 is located in the middle, the two ports of the first pipe section 7 are connected with the tapered pipe section 8, the other port of the tapered pipe section 8 is connected with the second pipe section 9, the diameter of the second pipe section 9 is smaller than that of the first pipe section 7; a guide wheel 10 is connected to the side wall of the second pipe section 9, the guide wheel 10 is matched with the roller 5; the second pipe section 9 on one side is connected with a chain wheel 11, the chain wheel 11 is used to connect a driving motor 12; a track 13 is installed on the base 1, two symmetrically arranged moving mechanisms 14 are installed on the track 13, a furnace cover 15 is installed on the moving mechanism 14, and the two furnace covers 15 can cover the hearth 6 after being buckled. The technical problems that can be solved: the existing magnetic powder pre-sintering rotary kiln has the problems of unstable support of the hearth 6, unreasonable structure layout leading to easy shaking during operation, poor cooperation between the sealing of the two ends of the hearth 6 and the driving structure, and the furnace cover 15 cannot conveniently cover the hearth 6 to ensure the sealing performance of the sintering environment. Movement process: the driving motor 12 drives the second pipe section 9 connected thereto to rotate through the chain wheel 11, the second pipe section 9 drives the hearth 6 composed of the tapered pipe section 8 and the first pipe section 7 to rotate as a whole, the hearth 6 rolls on the roller 5 on the first bearing seat 4, the guide wheel 10 on the side wall of the second pipe section 9 is matched with the roller 5 to assist the stable rotation of the hearth 6; when the hearth 6 needs to be sealed, the two moving mechanisms 14 on the track 13 drive the respective connected furnace covers 15 to move close to each other until the two furnace covers 15 are buckled to cover the hearth 6. Advantageous effects: the use of two symmetric racks 2 and bases 3 for support, combined with the double support and guidance of the hearth 6 by the roller 5 and the guide wheel 10, improves the rotation stability of the hearth 6 and avoids shaking during operation; the hearth 6 is composed of pipe sections with different diameters to meet the processing requirements at different stages of the magnetic powder pre-sintering process; the furnace cover 15 can be conveniently buckled through the moving mechanism 14 to ensure the sealing performance of the sintering environment of the hearth 6, which is beneficial to improving the quality of magnetic powder pre-sintering.

[0031] As Figure 5As shown, as an optimization of Embodiment 1, the base 1 includes a base frame 16 and a first steel plate 17. The base frame 16 is composed of welded channel steel and is cross-shaped. The top and bottom surfaces of the base frame 16 are welded with the first steel plate 17. Technical problem solved: Existing rotary kiln bases 1 mostly adopt a single structure, resulting in insufficient overall strength. After long-term operation bearing heavy loads such as the furnace chamber 6, deformation easily occurs, affecting the overall operational stability of the rotary kiln. Beneficial effects: The base frame 16 is made of welded channel steel and is cross-shaped. The cross-shaped structure can distribute the force, and the channel steel material increases the frame strength. The welded first steel plate 17 on the top and bottom surfaces of the base frame 16 further enhances the overall structural strength and rigidity of the base 1, preventing deformation of the base 1 under long-term load and ensuring the overall operational stability of the rotary kiln.

[0032] like Figure 6 As shown, as an optimization of Embodiment 1, the frame 2 includes a rectangular frame 18 and a second steel plate 19. The rectangular frame 18 is welded from channel steel, and the second steel plate 19 is welded to the top surface of the rectangular frame 18. Technical problem solved: The existing rotary kiln frame 2 has a simple structure, but the flatness of the top bearing surface is insufficient, leading to unstable installation of the base 3, which in turn affects the stability of the subsequent furnace 6 support. Beneficial effects: The rectangular frame 18 is welded from channel steel, improving the overall strength of the frame 2; the second steel plate 19 welded to the top surface of the rectangular frame 18 ensures the flatness of the top bearing surface of the frame 2, facilitating stable installation of the base 3, indirectly improving the support stability of the furnace 6, and ensuring reliable operation of the rotary kiln.

[0033] like Figure 7 and Figure 8 As shown, as an optimization of Embodiment 1, there are two tracks 13, each shaped like an I-beam, with one track 13 having a toothed surface 20 on its top surface. The technical problem solved is that existing rotary kiln tracks 13 are mostly of a single structure, and the moving mechanism 14 is prone to deviation when moving on the track 13, failing to accurately move the furnace cover 15 and affecting the locking accuracy of the furnace cover 15. Beneficial effects: Setting two I-beam track 13s enhances the load-bearing capacity of the track 13 itself; the toothed surface 20 on the top surface of one track 13 is adapted to the toothed wheel 25 of the moving mechanism 14, and in conjunction with the adaptation of the wheel 24 to the other track 13, achieves precise guiding movement of the moving mechanism 14 on the track 13, avoiding deviation and ensuring the locking accuracy of the furnace cover 15.

[0034] like Figure 7As shown, as the optimization of embodiment one, the moving mechanism 14 comprises a frame 21, the top surface of the frame 21 is welded with a load plate 22, the shape of the load plate 22 is arc-shaped, the load plate 22 is matched with the furnace cover 15; the bottom surface of the frame 21 is connected with a wheel seat 23, the number of the wheel seat 23 is four, two wheel seats 23 are a group, one group of wheel seats 23 is rotatably connected with a wheel 24, the wheel 24 is matched with the track 13 without the tooth surface 20, the other group of wheel seats 23 is rotatably connected with a toothed wheel 25, the toothed wheel 25 is matched with the track 13 with the tooth surface 20; the frame 21 is connected with a first telescopic rod 26, the end of the first telescopic rod 26 is connected with a cylinder seat 27, the cylinder seat 27 is connected with the base 1. The technical problem that can be solved: the existing rotary kiln moving mechanism 14 drives the furnace cover 15 to move, the moving stability is poor, and the technical problem that the furnace cover 15 cannot be accurately and stably moved cannot be solved. Movement process: when the furnace cover 15 needs to be moved, the first telescopic rod 26 drives the frame 21 to move on the track 13, when the frame 21 moves, the wheel 24 on one group of wheel seats 23 rolls on the track 13 without the tooth surface 20, the toothed wheel 25 on the other group of wheel seats 23 rolls on the track 13 with the tooth surface 20, the frame 21 drives the arc-shaped load plate 22 welded on the top surface to move, and the load plate 22 drives the furnace cover 15 to move synchronously. Advantageous effects: the frame 21 is welded with the arc-shaped load plate 22 on the top surface, the arc-shaped structure is matched with the furnace cover 15, the installation stability of the furnace cover 15 is improved, and the furnace cover 15 is prevented from falling off; the wheels 24 and the toothed wheels 25 are used to move on different tracks 13, combined with the driving of the first telescopic rod 26, the moving mechanism 14 drives the furnace cover 15 to move accurately and stably, and provides protection for the accurate clamping of the furnace cover 15.

[0035] As Figure 9As shown in the embodiment, as the optimization of the first embodiment, the cover 15 comprises a cover body 28, the cover body 28 is semicircular, the cover body 28 is provided with a refractory brick 29, the refractory brick 29 is arc-shaped, the inner arc surface of the refractory brick 29 is provided with an inner lining 30, the inner lining 30 is semicircular, the cover body 28 is provided with a cover plate 31 limiting the refractory brick 29 and the inner lining 30, the cover plate 31 is U-shaped, two cover plates 31 are symmetrically arranged, the center of the cover body 28 is provided with an arc groove 32 matched with the second pipe section 9. The technical problems that can be solved: the existing rotary kiln cover 15 has poor heat insulation effect, heat is easily lost during the sintering process, and the sealing of the cover 15 and the second pipe section 9 of the furnace chamber 6 is poor, and the refractory brick 29 and the inner lining 30 are easily loose and fall off in the cover 15. Beneficial effects: The arc-shaped refractory brick 29 and the semicircular inner lining 30 are installed in the cover body 28, the double heat insulation structure improves the heat insulation effect of the cover 15, reduces the heat loss during the sintering process, and saves energy; the cover plate 31 limits the position of the refractory brick 29 and the inner lining 30, avoiding loose and falling off, prolonging the service life of the cover 15; the center arc groove 32 of the cover body 28 is matched with the second pipe section 9 in a gap, ensuring the basic sealing of the cover 15 and the second pipe section 9, which is beneficial to maintaining the stability of the sintering environment in the furnace chamber 6.

[0036] As shown in the embodiment, Figure 10 As the optimization of the first embodiment, the side wall of the cover body 28 is connected with a heating element 33, the heating element 33 is arranged at equal angles, and the heating element 33 extends into the inner lining 30; the outer side wall of the cover body 28 is connected with a heat shield 34 protecting the heating element 33. Beneficial effects: The heating element 33 arranged at equal angles is installed on the side wall of the cover 15, and the heating element 33 extends into the inner lining 30, which can uniformly heat the local area in the furnace chamber 6, meeting the temperature requirements of different areas during the pre-sintering process of the magnetic powder; the heat shield 34 on the outer side wall can not only protect the heating element 33 from external damage, but also reduce the heat loss of the heating element 33, improve the heating efficiency, and save energy.

[0037] As shown in the embodiment, Figure 10 As shown in the embodiment, as the optimization of the first embodiment, the cover plate 31 is connected with a wire groove 35, and the wire groove 35 is provided with an asbestos strip 36, which can improve the sealing performance of the cover 15. The technical problems that can be solved: the sealing performance of the cover plate 31 of the existing rotary kiln cover 15 is poor, the hot gas in the furnace chamber 6 is easily leaked from the gap between the cover plates 31 during the sintering process, affecting the stability of the sintering environment in the furnace chamber 6, and the cold air from the outside is easily introduced into the furnace chamber 6. Beneficial effects: The asbestos strip 36 is installed in the wire groove 35, which has good sealing performance and can effectively fill the gap between the cover plates 31, preventing the hot gas in the furnace chamber 6 from leaking and the cold air from the outside from entering, maintaining the stability of the sintering environment in the furnace chamber 6, and improving the pre-sintering quality of the magnetic powder.

[0038] As shown in the embodiment, Figure 11As shown, as the optimization of embodiment one, the end surface of the cover body 28 is connected with a bolt seat 37, the bolt seats 37 on both sides are fixed through positioning bolts 38, to ensure the safety of the buckling of the furnace cover 15. The technical problem that can be solved: the existing rotary kiln 2 furnace covers 15 lack reliable fixing structure after buckling, and the furnace cover 15 is easy to separate due to vibration during the operation of the rotary kiln, which exists the technical problem of safety hidden trouble. Beneficial effects: the end surface of the cover body 28 is provided with a bolt seat 37, the bolt seats 37 on both sides are fixed through positioning bolts 38, to provide a reliable fixing structure for the buckled furnace cover 15, prevent the furnace cover 15 from separating during the vibration of the rotary kiln, ensure the safety of the buckling of the furnace cover 15, and avoid safety accidents and sintering quality problems caused by the separation of the furnace cover 15.

[0039] As Figures 12-14As shown, as the optimization of Embodiment One, the side wall of one cover body 28 is connected with a first plate 39, the first plate 39 is shaped as a U shape, a rubber air bag 40 is connected on the first plate 39, equidistantly arranged inner supports 41 are connected on the inner wall of the rubber air bag 40, the inner supports 41 are shaped as a U shape, through grooves 42 are opened on the side wall of the inner supports 41, the through grooves 42 penetrate the arc segments of the inner supports 41; a gas injection nozzle 43 is connected on the rubber air bag 40; another cover body 28 is connected with a second plate 44, the gap between the first plate 39 and the second plate 44 is used to accommodate the rubber air bag 40; the height of the second plate 44 is greater than the height of the first plate 39; a third plate 45 is connected on the second plate 44, the third plate 45 is perpendicular to the second plate 44, and the third plate 45 is used to cover the gap between the first plate 39 and the second plate 44, and the openings of the inner supports 41 face the third plate 45. The technical problem that can be solved: after the existing rotary kiln cover 15 is buckled, only the positioning bolt 38 is fixed, the sealing performance is still insufficient, the gap between the cover 15 is easy to cause hot gas leakage, and the technical problem that lacks auxiliary sealing structure to further improve the sealing effect. Movement process: when the two covers 15 are buckled, the first plate 39 moves with the one side cover body 28, the second plate 44 moves with the other side cover body 28, the rubber air bag 40 on the first plate 39 enters the gap between the second plate 44 and the first plate 39, and the third plate 45 covers the gap; the rubber air bag 40 is injected with gas through the gas injection nozzle 43, the rubber air bag 40 expands, the inner supports 41 support inside the rubber air bag 40, the rubber air bag 40 fills the gap between the first plate 39 and the second plate 44, and auxiliary sealing is realized; when deflated, the rubber air bag 40 contracts, and the cover 15 can be separated. Advantageous effects: the cooperation of the rubber air bag 40, the first plate 39, the second plate 44 and the third plate 45 is set, the rubber air bag 40 expands after being injected with gas, which can effectively fill the gap between the covers 15, the inner supports 41 enhance the structural stability of the rubber air bag 40 after expansion, and prevent the rubber air bag 40 from being deformed too much; the third plate 45 covers the gap, further blocks the leakage of hot gas, significantly improves the sealing performance of the buckled cover 15, and maintains the stable sintering environment in the hearth 6; the sealing mode of the rubber air bag 40 is flexible, and the opening and closing operation of the cover 15 is convenient.

[0040] As Figures 15-18As shown, embodiment two, and embodiment one different is, considering the positioning bolt 38 need manual installation, operation is cumbersome, the cover 28 is connected with the support 46, one of the support 46 is connected with the first plugboard 47, the first plugboard 47 has the first inclined plane 48, the first plane 49, the second inclined plane 50 from left to right, the first plane 49 has the first semicircular groove 51, the first semicircular groove 51 is rotatably connected with the first semicircular column 52, the first semicircular column 52 is flush with the first plane 49; another support 46 is connected with the second plugboard 53, the second plugboard 53 has the third inclined plane 54, the second plane 55, the fourth inclined plane 56 from right to left, the third inclined plane 54, the second plane 55, the fourth inclined plane 56 are inserted with the first plugboard 47, the second plane 55 has the second semicircular groove 57, the second semicircular groove 57 is rotatably connected with the second semicircular column 58, the second semicircular column 58 is connected with the rotating plate 59, the second plugboard 53 has the rectangular groove 60 communicated with the second semicircular groove 57, the rotating plate 59 is located in the rectangular groove 60, the tension spring 61 is installed between the rotating plate 59 and the rectangular groove 60; the second plugboard 53 is connected with the support 62, the second telescopic rod 63 is installed on the support 62, the second telescopic rod 63 is used for driving the rotating plate 59 to rotate; the initial state of the second semicircular column 58 protrudes from the second semicircular groove 57 through the tension spring 61; when inserting, the inclined plane guide makes the first semicircular column 52 and the second semicircular column 58 coincide, and the second semicircular column 58 is clamped into the first semicircular groove 51, realizing the quick locking of the furnace cover 15, and the first plugboard 47 and the second plugboard 53 can be opened by driving the rotating plate 59 to rotate through the second telescopic rod 63. The technical problem that the furnace cover 15 in embodiment one is fixed by the positioning bolt 38, the positioning bolt 38 needs manual installation and disassembly, the operation is cumbersome, time-consuming and labor-consuming, and the opening and closing efficiency of the furnace cover 15 is affected. Movement process: when the two furnace covers 15 are buckled, the first plugboard 47 of one side support 46 and the second plugboard 53 of the other side support 46 are inserted with each other, the first inclined plane 48 and the second inclined plane 50 of the first plugboard 47 and the third inclined plane 54 and the fourth inclined plane 56 of the second plugboard 53 guide each other, so that the first semicircular column 52 and the second semicircular column 58 coincide, and the second semicircular column 58 protrudes from the second semicircular groove 57 in the initial state under the action of the tension spring 61, the second semicircular column 58 is clamped into the first semicircular groove 51 in the inserting process, realizing the quick locking of the furnace cover 15; when the furnace cover 15 needs to be opened, the second telescopic rod 63 on the support 62 is elongated, driving the rotating plate 59 to rotate in the rectangular groove 60, the rotating plate 59 drives the second semicircular column 58 to rotate, so that the second semicircular column 58 is separated from the first semicircular groove 51, the first plugboard 47 and the second plugboard 53 are separated, and the furnace cover 15 is opened.Beneficial effects: the cooperation structure of the first plug-in plate 47, the second plug-in plate 53, the semi-cylinder, the tension spring 61 and the second telescopic rod 63, without manual installation and disassembly of bolts, through plug-in plate plug-in and semi-cylinder clamping, the furnace cover 15 is quickly locked, the second telescopic rod 63 drives the rotating plate 59 to open the furnace cover 15, the operation is simple and convenient, the opening and closing efficiency of the furnace cover 15 is significantly improved, and the labor and time cost are saved, the tension spring 61 guarantees the protrusion of the initial state of the second semi-cylinder 58, ensures reliable clamping during plug-in, and improves the stability and reliability of locking.

[0041] Although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement to part of the technical features, and any modification, equivalent replacement, improvement, etc. within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A rotary kiln for pre-sintering of magnetic powders, characterized in that, The utility model provides a kind of furnace, including base (1), the base (1) is equipped with 2 racks (2) of symmetrical arrangement, the rack (2) is equipped with 2 bases (3) of symmetrical arrangement, the shape of the base (3) is U type, the base (3) is equipped with first bearing seat (4), the first bearing seat (4) is rotatably connected with roller (5), the roller (5) is rotatably connected with hearth (6), the hearth (6) is composed of first pipe section (7), taper pipe section (8), second pipe section (9), the first pipe section (7) is located in middle, the first pipe section (7) is connected with taper pipe section (8) at both ends, the other end of taper pipe section (8) is connected with second pipe section (9), the diameter of second pipe section (9) is less than the diameter of first pipe section (7);The sidewall of second pipe section (9) is connected with guide wheel (10), the guide wheel (10) is adapted with roller (5);Second pipe section (9) of one side is connected with sprocket (11), and the sprocket (11) is used to connect driving motor (12);The base (1) is equipped with track (13), the track (13) is equipped with 2 mobile mechanisms (14) of symmetrical arrangement, the mobile mechanism (14) is equipped with furnace cover (15), and two furnace covers (15) can cover hearth (6) after buckling.

2. The magnetic powder pre-sintering rotary kiln according to claim 1, characterized by, The base (1) includes a base frame (16) and a first steel plate (17), the base frame (16) is composed of channel steel welding, the base frame (16) is cross-shaped, and the top and bottom surfaces of the base frame (16) are welded with the first steel plate (17).

3. The magnetic powder pre-sintering rotary kiln according to claim 1, characterized by, The rack (2) includes a rectangular frame (18) and a second steel plate (19), the rectangular frame (18) is composed of channel steel welding, and the top surface of the rectangular frame (18) is welded with the second steel plate (19).

4. The magnetic powder pre-sintering rotary kiln according to claim 1, wherein The number of the track (13) is two, and the shape of the track (13) is a work-type seat, wherein one track (13) is provided with a tooth surface (20) on the top surface.

5. The magnetic powder pre-sintering rotary kiln according to claim 4, wherein The mobile mechanism (14) includes a vehicle frame (21), the top surface of the vehicle frame (21) is welded with a load plate (22), the load plate (22) is arc-shaped and matched with the furnace cover (15); the bottom surface of the vehicle frame (21) is connected with a wheel seat (23), the number of the wheel seat (23) is four, two wheel seats (23) form a group, one group of wheel seats (23) is rotatably connected with a wheel (24), the wheel (24) is matched with the track (13) without the tooth surface (20), the other group of wheel seats (23) is rotatably connected with a toothed wheel (25), and the toothed wheel (25) is matched with the track (13) with the tooth surface (20); the vehicle frame (21) is connected with a first telescopic rod (26), the end of the first telescopic rod (26) is connected with a cylinder seat (27), and the cylinder seat (27) is connected with the base (1).

6. The magnetic powder pre-sintering rotary kiln according to claim 1, wherein The furnace cover (15) comprises a cover body (28), the cover body (28) is semicircular, a refractory brick (29) is arranged in the cover body (28), the refractory brick (29) is arc-shaped, an inner lining (30) is arranged on the inner arc surface of the refractory brick (29), the inner lining (30) is semicircular, the cover body (28) is provided with a cover plate (31) for limiting the refractory brick (29) and the inner lining (30), the cover plate (31) is U-shaped, two cover plates (31) are symmetrically arranged, and the center of the cover body (28) is provided with an arc groove (32) matched with the second pipe section (9).

7. The magnetic powder pre-sintering rotary kiln according to claim 6, characterized by The side wall of the cover body (28) is connected with a heating element (33), the heating element (33) is arranged at equal angles, and the heating element (33) extends into the inner lining (30); and the outer side wall of the cover body (28) is connected with a heat shield (34) for protecting the heating element (33).

8. The magnetic powder pre-sintering rotary kiln according to claim 6, wherein The cover plate (31) is connected with a wire slot (35), the wire slot (35) is provided with an asbestos strip (36); the end surface of the cover body (28) is connected with a bolt seat (37), and the bolt seats (37) on the two sides are fixed through positioning bolts (38).

9. The magnetic powder pre-sintering rotary kiln according to claim 6, wherein The side wall of one cover body (28) is connected with a first strip (39), the first strip (39) is U-shaped, the first strip (39) is connected with a rubber air bag (40), the inner wall of the rubber air bag (40) is connected with inner supports (41) arranged at equal intervals, the inner supports (41) are U-shaped, the side wall of the inner support (41) is provided with a through groove (42) penetrating the arc-shaped section of the inner support (41); the rubber air bag (40) is connected with a gas injection nozzle (43); the other cover body (28) is connected with a second strip (44), the gap between the second strip (44) and the first strip (39) is used for accommodating the rubber air bag (40); the height of the second strip (44) is greater than that of the first strip (39); the second strip (44) is connected with a third strip (45), the third strip (45) is perpendicular to the second strip (44), and the third strip (45) is used for covering the gap between the first strip (39) and the second strip (44), and the opening of the inner support (41) faces the third strip (45).

10. The magnetic powder pre-sintering rotary kiln according to claim 9, characterized by The cover (28) is connected with support (46), one of the support (46) is connected with the first plugboard (47), the first plugboard (47) has from left to right first inclined plane (48), first plane (49), second inclined plane (50), the first plane (49) has first semicircular groove (51), the first semicircular groove (51) is rotatably connected with first semicircular cylinder (52), the first semicircular cylinder (52) straight section is flush with first plane (49);Another support (46) is connected with the second plugboard (53), the second plugboard (53) has from right to left third inclined plane (54), second plane (55), fourth inclined plane (56), the third inclined plane (54), second plane (55), fourth inclined plane (56) and first plugboard (47) plug-in adaptation, the second plane (55) has second semicircular groove (57), the second semicircular groove (57) is rotatably connected with second semicircular cylinder (58), the second semicircular cylinder (58) is connected with the rotating plate (59), the second plugboard (53) has the rectangular slot (60) that communicates with second semicircular groove (57), the rotating plate (59) is located in rectangular slot (60), the rotating plate (59) and rectangular slot (60) between installation pull spring (61);The second plugboard (53) is connected with support (62), the support (62) is installed with second telescopic rod (63), the second telescopic rod (63) is used for driving rotating plate (59) rotation;Through pull spring (61) makes the initial state of second semicircular cylinder (58) protrude second semicircular groove (57).

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