CN217468189U - Stirring device for rare earth permanent magnet grain boundary diffusion slurry - Google Patents

Abstract

The application discloses agitating unit of tombarthite permanent magnet grain boundary diffusion thick liquids, including holding mechanism, rabbling mechanism, gas circuit mechanism, heating mechanism and discharge mechanism. The containing mechanism is used for containing the heavy rare earth slurry. The stirring mechanism is used for stirring the heavy rare earth slurry in the containing mechanism. The gas path mechanism is used for filling gas into the accommodating mechanism to promote the discharge of the heavy rare earth slurry, and vacuumizing the accommodating mechanism to pump out bubbles in the heavy rare earth slurry. The heating mechanism is used for heating the heavy rare earth slurry in the containing mechanism. The discharge mechanism is used for discharging the heavy rare earth slurry in the containing mechanism. The stirring device solves the problems that the slurry contains bubbles, the slurry is easy to settle and the content difference of heavy rare earth on the surface of the magnet is large.

Description

Stirring device for rare earth permanent magnet grain boundary diffusion slurry

Technical Field

The application relates to the field of rare earth permanent magnet materials, in particular to a stirring device for rare earth permanent magnet grain boundary diffusion slurry.

Background

The grain boundary diffusion process is one of the important technologies for reducing the rare earth consumption of the Nd-Fe-B permanent magnet and improving the comprehensive magnetic performance. The main diffusion processes include coating, magnetron sputtering, spraying, evaporation, galvanic deposition and the like, wherein the coating and spraying processes are increasingly emphasized, and the technology is continuously improved. The heavy rare earth slurry of the coating and spraying process is prepared from an organic binder, a solvent and heavy rare earth compound powder, the slurry is combined with the surface of the magnet through spraying and coating, and the coercive force of the magnet is improved through high-temperature heat treatment. In actual use, a lot of bubbles are generated due to partial chemical reaction in the process of preparing the slurry, so that the bonding of the slurry containing the heavy rare earth compound and the surface of the magnet is influenced, and in addition, the heavy rare earth is settled in the slurry along with the prolonging of time, so that the quality of the heavy rare earth compound coated and sprayed on the magnet is different, and the consistency of the magnet is influenced.

SUMMERY OF THE UTILITY MODEL

The application provides a rare earth permanent magnet grain boundary diffusion thick liquids's agitating unit can solve and contain the bubble in the thick liquids, the thick liquids easily subsides, the big problem of the heavy tombarthite content difference in magnet surface.

The embodiment of the application provides a rare earth permanent magnet grain boundary diffusion thick liquids's agitating unit, including holding mechanism, rabbling mechanism, gas circuit mechanism, heating mechanism and discharge mechanism. The containing mechanism is used for containing the heavy rare earth slurry. The stirring mechanism is used for stirring the heavy rare earth slurry in the containing mechanism. The gas path mechanism is used for filling gas into the accommodating mechanism to promote the discharge of the heavy rare earth slurry, and vacuumizing the accommodating mechanism to pump out bubbles in the heavy rare earth slurry. The heating mechanism is used for heating the heavy rare earth slurry in the containing mechanism. The discharge mechanism is used for discharging the heavy rare earth slurry in the containing mechanism.

In some of these embodiments, the containment mechanism includes a bucket body and a lid body. The opening of the barrel body is upward. The cover seals the opening, and the cover has a charging port.

In some of these embodiments, the agitation mechanism includes a helical blade and a motor. The helical blade is positioned in the barrel body. The motor is connected with the helical blade.

In some of these embodiments, the motor is pressed against the cover.

In some of these embodiments, the pneumatic mechanism includes a pneumatic valve, a line changer, a gas line, and a vacuum line. The gas circuit valve is positioned on the cover body and communicated with the barrel body. The first port of the pipeline converter is communicated with the gas circuit valve. The gas line is in communication with the second port of the line switch. The vacuum line is in communication with the third port of the line switch.

In some embodiments, the air circuit mechanism further comprises a pressure gauge, and the pressure gauge is located in the air circuit.

In some embodiments, the heating mechanism comprises a heating body, and the heating body is arranged at the bottom of the barrel body in a cushioning mode.

In some of these embodiments, the vent mechanism includes a vent valve and a vent line. The discharge valve is positioned at the lower side of the barrel body and is communicated with the barrel body. The discharge pipeline is communicated with the discharge valve.

In some of these embodiments, the drain valve is located on the underside of the side of the bowl.

In some of these embodiments, the discharge mechanism further comprises a flow meter located at the discharge valve.

According to this application embodiment provide a agitating unit of tombarthite permanent magnet grain boundary diffusion thick liquids, including holding mechanism, rabbling mechanism, gas circuit mechanism, heating mechanism and discharge mechanism. The containing mechanism is used for containing the heavy rare earth slurry. The stirring mechanism is used for stirring the heavy rare earth slurry in the containing mechanism. The gas path mechanism is used for filling gas into the accommodating mechanism to promote the discharge of the heavy rare earth slurry, and vacuumizing the accommodating mechanism to pump out bubbles in the heavy rare earth slurry. The heating mechanism is used for heating the heavy rare earth slurry in the containing mechanism. The discharge mechanism is used for discharging the heavy rare earth slurry in the containing mechanism. The utility model provides an agitating unit can drive helical blade constantly through the motor and stir diffusion thick liquids under the vacuum, discharges the bubble in the thick liquids through the evacuation, also can accelerate this exhaust process to the thick liquids heating simultaneously. After the bubbles are discharged, nitrogen is filled into the barrel body, the slurry is discharged through a discharge pipeline, the surface coating or spraying of the permanent magnet in the next procedure is carried out, meanwhile, the heavy rare earth compound in the slurry is not settled through continuous stirring, the viscosity of the slurry is controlled through adjusting the heating temperature, and the requirements of different coating or spraying process parameters are met.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of a stirring device in an embodiment of the present application;

FIG. 2 is a schematic view of the gas flow direction during the evacuation of the stirring apparatus in the embodiment of the present application;

FIG. 3 is a schematic view of the gas flow direction during the slurry discharge of the stirring device in the embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

Referring to fig. 1-3, the embodiment of the present application provides a stirring apparatus 1 for rare earth permanent magnet grain boundary diffusion slurry, which is used for preparing slurry for neodymium iron boron magnet grain boundary diffusion. The stirring device 1 includes a containing mechanism 10, a stirring mechanism 11, an air path mechanism 12, a heating mechanism 13, and a discharge mechanism 14.

The accommodating mechanism 10 is for accommodating the heavy rare earth slurry 2. The accommodating mechanism 10 includes a tub 100 and a cover 101.

The tub 100 is opened upward. The inner wall surface of the tub 100 is a cylindrical surface.

The lid body 101 seals the opening, and the lid body 101 has a charging port 1010 thereon to charge the prepared heavy rare earth slurry 2 into the tub body 100 through the charging port 1010.

The stirring mechanism 11 is used for stirring the heavy rare earth slurry 2 in the containing mechanism 10. The stirring mechanism 11 may include a helical blade 110 and a motor 111.

The helical blade 110 is located in the tub 100. The center line of the helical blade 110 may coincide with the center line of the tub 100.

The motor 111 is connected to the spiral blade 110 and controls the rotation speed of the spiral blade 110. The motor 111 may be pressed on the cover 101.

The gas path mechanism 12 is used for charging gas into the containing mechanism 10 to promote the discharge of the heavy rare earth slurry 2, and vacuumizing the containing mechanism 10 to extract the bubbles 3 in the heavy rare earth slurry 2. The pneumatic mechanism 12 may include a pneumatic valve 120, a line changer 121, a gas line 122, and a vacuum line 123.

The air valve 120 may be located on the cover 101 and communicate with the barrel 100.

The pipeline converter 121 may be a three-way structure, and a first port of the pipeline converter 121 is communicated with the air passage valve 120.

The gas line 122 may communicate with a second port of the line converter 121. Gas line 122 may be used to inflate nitrogen into containment mechanism 10.

The vacuum line 123 may be in communication with a third port of the line switch 121.

The pneumatic mechanism 12 may further include a pressure gauge 124, and the pressure gauge 124 may be located on the gas line 122 and may indicate the inflation gas pressure.

The heating mechanism 13 is used for heating the heavy rare earth slurry 2 in the accommodating mechanism 10, so that the temperature of the heavy rare earth slurry 2 in the accommodating mechanism 10 is increased, which is beneficial to discharging the bubbles 3 therein, and meanwhile, the viscosity of the heavy rare earth slurry 2 can be adjusted through temperature increase. The heating mechanism 13 may include a heating body 130.

The heating body 130 may be padded at the bottom of the tub 100. The heating body 130 may have a sheet structure.

The discharge mechanism 14 is for discharging the heavy rare earth slurry 2 in the containing mechanism 10. The discharge mechanism 14 may include a discharge valve 140 and a discharge line 141.

The discharge valve 140 is located at a lower side of the tub 100, such as a lower side of a side of the tub 100, and communicates with the tub 100.

The discharge line 141 communicates with the discharge valve 140.

The discharge mechanism 14 may further include a flow meter 142, and the flow meter 142 may be located on the discharge valve 140. The flow rate of the nitrogen gas fed in is adjusted according to the process requirements by detecting the flow rate of the discharged slurry 2.

In this application, drive helical blade 110 through motor 111 and rotate the stirring, utilize vacuum line 123 to take out the bubble 3 in with thick liquids 2, be favorable to heavy tombarthite thick liquids 2 to coat well in the magnet surface and combine closely. After the bubbles 3 are discharged, the helical blades 110 continue to stir, so that the slurry 2 is uniformly mixed and the heavy rare earth compounds are not settled, nitrogen is filled into the barrel 100 through the gas pipeline 122, the slurry 2 is discharged from the discharge pipeline 141, and the delivery flow rate of the slurry 2 is adjusted through controlling the flow meter 142.

Specifically, when the stirring device 1 of the rare earth permanent magnet grain boundary diffusion slurry 2 is used, the valve is opened, the valve is closed, after the heavy rare earth compound, the binder and the solvent are prepared into the heavy rare earth slurry 2 according to a certain proportion, the heavy rare earth slurry 2 is loaded into the barrel body 100 through the loading port 1010, the motor 111 drives the helical blade 110 to rotate, the bottom slurry 2 is brought to the upper part to be stirred up and down, the pipeline converter 121 is connected into the vacuum pipeline 123 to be vacuumized, and in order to accelerate the reaction of the discharged slurry 2, the heating body 130 is opened to heat the slurry 2. After the gas is discharged, the pipeline converter 121 is connected to the gas pipeline 122, the gas circuit valve 120 is opened, nitrogen is filled into the barrel body 100 through the gas pipeline 122, the slurry 2 in the barrel body 100 is conveyed to the next process through the discharge pipeline 141 under the action of high-pressure gas, the flow meter 142 monitors the flow rate of the slurry 2, the nitrogen pressure is adjusted according to the pressure gauge 124, the temperature of the heating body 130 is controlled, the viscosity of the slurry 2 is changed, and the flow rate stability of the conveyed slurry 2 is kept.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limitations of the present patent, and those skilled in the art can understand the specific meaning of the above terms according to their specific circumstances.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. The utility model provides a rare earth permanent magnet grain boundary diffusion thick liquids's agitating unit which characterized in that includes:

the accommodating mechanism is used for accommodating the heavy rare earth slurry;

the stirring mechanism is used for stirring the heavy rare earth slurry in the containing mechanism;

the gas path mechanism is used for filling gas into the accommodating mechanism to promote the discharge of the heavy rare earth slurry, and vacuumizing the accommodating mechanism to pump out bubbles in the heavy rare earth slurry;

the heating mechanism is used for heating the heavy rare earth slurry in the containing mechanism; and

and the discharging mechanism is used for discharging the heavy rare earth slurry in the containing mechanism.

2. The stirring apparatus for rare earth permanent magnet grain boundary diffusion slurry according to claim 1, wherein said accommodating mechanism comprises:

a barrel body with an upward opening; and

a lid body sealing the opening, the lid body having a charging port.

3. The stirring apparatus for rare earth permanent magnet grain boundary diffusion slurry according to claim 2, wherein said stirring mechanism comprises:

the helical blade is positioned in the barrel body; and

and the motor is connected with the spiral blade.

4. The stirring apparatus for a rare earth permanent magnet grain boundary diffusion slurry according to claim 3,

the motor is arranged on the cover body in a pressing mode.

5. The stirring device for rare earth permanent magnet grain boundary diffusion slurry according to claim 2, wherein the gas path mechanism includes:

the gas path valve is positioned on the cover body and communicated with the barrel body;

the first port of the pipeline converter is communicated with the gas circuit valve;

a gas line in communication with a second port of the line switch; and

a vacuum line in communication with the third port of the line switch.

6. The stirring apparatus for a rare earth permanent magnet grain boundary diffusion slurry according to claim 5,

the gas circuit mechanism further comprises:

and the pressure gauge is positioned on the gas pipeline.

7. The stirring apparatus for a rare earth permanent magnet grain boundary diffusion slurry according to claim 2,

the heating mechanism includes:

and the heating body is padded at the bottom of the barrel body.

8. The stirring apparatus for a rare earth permanent magnet grain boundary diffusion slurry according to claim 2,

the discharge mechanism includes:

the discharge valve is positioned at the lower side of the barrel body and is communicated with the barrel body; and

and the discharge pipeline is communicated with the discharge valve.

9. The stirring apparatus for a rare earth permanent magnet grain boundary diffusion slurry according to claim 8,

the discharge valve is positioned at the lower side of the side part of the barrel body.

10. The stirring apparatus for rare earth permanent magnet grain boundary diffusion slurry according to claim 8, wherein said discharge mechanism further comprises:

a flow meter located at the discharge valve.

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