Drying device for neodymium-iron-boron magnet surface treatment

Abstract

The utility model discloses a drying device for neodymium-iron-boron magnet surface treatment, which comprises a drying bin, the bottom of the drying bin is provided with hot air equipment facing inwards, the top of the drying bin is provided with an air duct for air outlet, a drying frame is arranged in the drying bin and comprises a plurality of transverse rods arranged in an array, the transverse rods are covered with a layer of gauze, and the gauze is arranged in the drying bin. Neodymium-iron-boron magnets are supported through the gauze and the arrayed cross rods, the neodymium-iron-boron magnets can be evenly placed on the surface of the gauze to form a basic drying face, the hot air device enables hot air to flow upwards from the lower side of the gauze, the gauze has the soft and breathable material characteristics, and the neodymium-iron-boron magnets can be dried through supporting of the cross rods. The lower side of the neodymium-iron-boron magnet can be thoroughly dried under the condition that the basic supporting function of the neodymium-iron-boron magnet is guaranteed, and liquid residues are avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of magnetic material surface treatment, specifically relates to a kind of drying device for neodymium iron boron magnet surface treatment. BACKGROUND

[0002] As high-performance permanent magnet material, neodymium iron boron magnet is widely used in new energy vehicles, wind power generation, electronic equipment and other fields. In its production process, surface treatment is crucial to the corrosion resistance of magnet, plating adhesion and appearance quality. However, if the magnet is not completely dried after cleaning or pickling, residual moisture can cause hidden corrosion, low process efficiency, energy consumption and environmental pressure.

[0003] In the prior art, the patent with publication number CN210467570U uses a closed stirring barrel for heating and drying, which improves work efficiency, but the retention of water vapor prolongs the drying period. Another device uses a mesh belt to convey the magnet for ultrasonic cleaning and drying, but still has problems such as stacking of materials causing lamination marks and residual moisture in local areas. In addition, some drying devices use fixed hot air outlets, resulting in uneven temperature distribution, with magnets near the heat source easily overheating and insufficient drying in the edge area. SUMMARY

[0004] Therefore, the purpose of the utility model is to provide a drying device for neodymium iron boron magnet surface treatment, which is reasonable in structure, has uniform hot air distribution and can avoid magnet stacking, to improve the quality of neodymium iron boron magnet surface treatment and reduce the rework rate and energy consumption.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] The utility model includes a drying bin, the bottom of which is provided with a hot air equipment facing the inside, and the top is provided with an air duct for air outlet. The drying bin is provided with a drying rack inside. The drying rack includes a plurality of horizontal rods arranged in an array. A layer of gauze covers the horizontal rods.

[0007] Further, the drying rack further includes two bottom beams, and vertical rods are arranged on the two bottom beams. The vertical rods are fixed to the two ends of the horizontal rods.

[0008] Further, one upper sliding rail is fixed to each end of the bottom beam. Two lower sliding rails are fixed inside the drying bin and cooperate with the upper sliding rails. An opening is provided on the side of the drying bin for the sliding of the drying rack. A bin door is fixed to the side of the drying bin.

[0009] Further, the hot air equipment rotates the rotating drum arranged in the middle of the drying bin bottom, the rotating drum is driven by the motor fixed on the side of the drying bin bottom, the fan is fixed on the lower end of the rotating drum, the electric heating net is arranged in the middle of the rotating drum, and the bending pipe extending transversely is arranged on the upper end of the rotating drum.

[0010] Further, the air ducts are arranged on the top of the drying bin, the air ducts extend upwards from the side of the drying bin top and are bent downwards, and the two ends of the air ducts are exposed from the side of the drying bin.

[0011] The beneficial effects of the utility model lie in:

[0012] The utility model discloses a drying device for neodymium iron boron magnet, which comprises a drying bin, a hot air equipment and a plurality of neodymium iron boron magnets, wherein the drying bin is arranged in the hot air equipment, the hot air equipment is arranged on the top of the drying bin, and the plurality of neodymium iron boron magnets are arranged in the drying bin.

[0013] The other advantages, objects and features of the utility model will be described in the following description, and are obvious to those skilled in the art to some extent, or those skilled in the art can be taught from the practice of the utility model. The objects and other advantages of the utility model can be realized and obtained through the following description. DRAWINGS

[0014] In order to make the purpose, technical scheme and beneficial effects of the utility model more clear, the utility model provides the following drawings for description:

[0015] Fig. 1 It is whole schematic view of drying device for the utility model embodiment;

[0016] Fig. 2 It is drying bin sectional view for the utility model embodiment;

[0017] Fig. 3 The utility model discloses an oven drying frame structure schematic diagram.

[0018] The marks in the drawing are as follows: 1, oven drying bin, 11, air duct, 12, bin door, 2, hot air equipment, 21, rotating drum, 22, fan, 23, electric heating net, 24, bent pipe, 3, oven drying frame, 31, cross bar, 32, gauze, 33, bottom beam, 34, upper slide rail, 35, lower slide rail. Specific implementation

[0019] As Figs. 1-3 The utility model discloses an oven drying device for neodymium iron boron magnet surface treatment, including oven drying bin 1, the oven drying bin 1 is the bin -like structure of inside, and the inside can be provided with the heat insulating layer, as Fig. 2 The oven drying bin 1 bottom sets up support leg, and the oven drying bin 1 bottom is equipped with the hot air equipment 2 towards inside, and the top is equipped with the air duct 11 of air outlet, the oven drying bin 1 is equipped with the oven drying frame 3 in, and the hot air equipment 2 blows through the oven drying frame 3 from below to top, and the oven drying frame 3 on neodymium iron boron magnet is dried, and reference Fig. 3 , the oven drying frame 3 includes the cross bar 31 of array arrangement, the cross bar 31 is covered with a layer of gauze 32, and the gauze 32 is slightly concave between adjacent cross bar 31, and forms the article area, the oven drying frame 3 still includes two bottom beams 33, and the vertical pole is arranged on the two bottom beams 33, and the vertical pole is fixed to the both ends of the cross bar 31, and one upper slide rail 34 is fixed to the both ends of the bottom beam 33 respectively, and the oven drying bin 1 inside is fixed with two lower slide rails 35 matched with the upper slide rail 34, and the oven drying bin 1 side is equipped with the opening of the oven drying frame 3 sliding out, and the bin door 12 is fixed to the oven drying bin 1 side, to facilitate the oven drying frame 3 from the oven drying bin 1 side sliding out, and the neodymium iron boron magnet is conveniently replaced and taken. The rotating drum 21 of the hot air equipment 2 rotation is arranged in the bottom middle part of the oven drying bin 1, and the rotating drum 21 is driven through the motor fixed to the bottom side of the oven drying bin 1, and the fan 22 is fixed to the lower end of the rotating drum 21, and the electric heating net 23 is equipped in the middle part of the rotating drum 21, and air flows through the electric heating net 23 through the fan 22, and forms hot air, and the bent pipe 24 of transverse extension is equipped to the upper end of the rotating drum 21, and the end opening of the bent pipe 24 is upwards, the air duct 11 has several and is arranged in the top of the oven drying bin 1, and the air duct 11 extends upwards from the top side of the oven drying bin 1 and bends downwards, and the air duct 11 end two ends expose from the oven drying bin 1 side.

[0020] The device supports the Nd-Fe-B magnets by arranging the gauze 32 and the horizontally arranged horizontal rods 31, can place several Nd-Fe-B magnets on the surface of the gauze 32 evenly, form a basic drying surface, the hot air equipment 2 flows the hot air from the lower side of the gauze 32 upwards, the gauze 32 has the characteristics of soft and breathable material, through the support of the horizontal rods 31, can completely dry the lower side of the Nd-Fe-B magnet under the guarantee of the basic support function of the Nd-Fe-B magnet, avoid liquid residue; the hot air accumulates at the top of the drying bin 1, finally the humid air flows out through the air duct 11, guarantees the dryness of the Nd-Fe-B magnet; the device sets several curved air ducts 11, temporarily accumulates the hot air in the inside of the drying bin 1, makes the temperature of the inside of the drying bin 1 rise, provides an effective drying area, the device also sets the rotating bending pipe 24, can output the air of the gauze 32 area on the drying rack 3 in a circular path, guarantees the uniform distribution of the hot air of the bottom side of the gauze 32, avoids the temperature of a single position being too high, the device dries completely, avoids the hidden corrosion points caused by the retention of water on the surface of the Nd-Fe-B magnet, causes the plating layer to bubble, peel off or even accelerate the corrosion of the base material, is convenient for subsequent inspection, sorting, packaging and other processes, reduces the product rework rate.

[0021] Finally, it should be pointed out that the above preferred embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present application.

Claims

1. A drying device for surface treatment of a neodymium-iron-boron magnet, characterized by: The application relates to a drying bin (1) which is provided with a hot air device (2) at the bottom and air outlets (11) at the top, and is internally provided with a drying rack (3) which comprises a plurality of horizontal rods (31) arranged in an array and covered with a layer of gauze (32).

2. The drying apparatus for surface treatment of neodymium-iron-boron magnets according to claim 1, characterized in that The drying rack (3) further comprises two bottom beams (33) which are provided with vertical rods arranged and distributed thereon, and the vertical rods are fixed to the two ends of the horizontal rods (31).

3. The drying apparatus for surface treatment of neodymium-iron-boron magnets according to claim 2, characterized in that The bottom beams (33) are respectively fixed with upper sliding rails (34) at the two ends, the drying bin (1) is internally fixed with two lower sliding rails (35) matched with the upper sliding rails (34), the drying bin (1) is provided with an opening at the side for the sliding-out of the drying rack (3), and the drying bin (1) is fixed with a bin door (12) at the side.

4. The drying apparatus for surface treatment of neodymium-iron-boron magnets according to claim 3, characterized in that The hot air device (2) is rotatably arranged in a rotating drum (21) arranged in the middle of the bottom of the drying bin (1), the rotating drum (21) is driven by a motor fixed at the side of the bottom of the drying bin (1), the rotating drum (21) is fixed with a fan (22) at the lower end, the rotating drum (21) is internally provided with an electric heating net (23), the rotating drum (21) is provided with a transversely-extending bent pipe (24) at the upper end, and the bent pipe (24) is provided with an upwardly-open end.

5. The drying apparatus for surface treatment of neodymium-iron-boron magnets according to claim 4, characterized in that The air outlets (11) are arranged in an array at the top of the drying bin (1), the air outlets (11) extend upwards from the top side of the drying bin (1) and are bent downwards, and the air outlets (11) are exposed from the side of the drying bin (1) at the two ends.

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