CN117831927A

CN117831927A - Heat treatment device for rare earth permanent magnet material

Info

Publication number: CN117831927A
Application number: CN202310265121.8A
Authority: CN
Inventors: 朱丹
Original assignee: Ganzhou Jinhai Rare Earth Co ltd
Current assignee: Ganzhou Jinhai Rare Earth Co ltd
Priority date: 2023-03-18
Filing date: 2023-03-18
Publication date: 2024-04-05

Abstract

The invention discloses a heat treatment device for rare earth permanent magnet materials, which relates to the field of heat treatment devices for permanent magnet materials and comprises a box body, wherein a heat storage box is arranged at the top end of the box body, a heat pipe for guiding heat in the box body to the heat storage box is arranged between the heat storage box and the box body, a plurality of radiation water pipes are vertically arranged in the box body, the top ends of the radiation water pipes are connected with a converging water pipe, the bottom ends of the radiation water pipes are connected with a return water pipe, a water tank is arranged outside the box body, the return water pipe penetrates out of the box body and is connected with a water tank, and the converging water pipe is connected with a steam generator set through a pipeline. According to the invention, the heat storage box is arranged at the top end of the box body, the water circulation pipelines communicated with the box body and the interior of the heat storage box are arranged at the two sides of the box body, and the steam generator set is arranged at the top end of the box body, so that the energy which is supposed to be emitted to the outside in the box body is effectively utilized, and meanwhile, the energy consumption of the subsequent process is also saved.

Description

Heat treatment device for rare earth permanent magnet material

Technical Field

The invention relates to the field of heat treatment devices for permanent magnet materials, in particular to a heat treatment device for rare earth permanent magnet materials.

Background

The rare earth permanent magnet material, namely the permanent magnet material contains rare earth metal as an alloy element, the external magnetic field is removed after magnetization to keep stronger magnetism for a long time, and in order to enable the rare earth permanent magnet material to obtain better product performance, the rare earth permanent magnet material is often subjected to heat treatment in the production process.

Most of the existing heat treatment devices for rare earth permanent magnet materials are box-type vacuum heat treatment furnaces, heating sources are arranged in the vacuum heat treatment furnaces, after the air in the furnaces is pumped out to enable the vacuum degree in the furnaces to meet the heat treatment requirement, the heat treatment of the rare earth permanent magnet materials is finished mostly by firstly treating the rare earth permanent magnet materials in the furnaces for 24-48 hours at high temperature (800-1000 ℃) and then cooling the furnaces, so that the rare earth permanent magnet materials are cooled (40-50 ℃) along with the furnaces, then tempering at medium temperature (500-600 ℃) and then treating for 18-30 hours again.

When the existing heat treatment device for the rare earth permanent magnet material is used for heat treatment, energy is consumed to heat the interior of the furnace, the rare earth permanent magnet material in the furnace is cooled after heat treatment, heat in the furnace is always directly discharged in the cooling process, and after the cooling process is finished, the energy is consumed to heat the interior of the furnace so as to carry out the next process, a large amount of heat energy is wasted in the cooling process in the furnace, and a large amount of energy is consumed to heat the interior of the furnace during tempering.

In summary, the existing permanent magnet material heat treatment device is easy to waste a large amount of heat energy in the process of cooling in the furnace.

Disclosure of Invention

Based on the above, the invention aims to provide a heat treatment device for rare earth permanent magnet materials, so as to solve the technical problem that a large amount of heat energy is easily wasted in the cooling process of the existing heat treatment device for the permanent magnet materials in a furnace.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a heat treatment device for rare earth permanent magnet material, includes the box, the top of box is provided with the heat storage box, be provided with the heat pipe that is used for leading the heat in the box to the heat storage box between heat storage box and the box, the box top is provided with the collecting box, be connected through the collecting pipe between collecting box and the heat pipe, the collecting box is used for collecting and keeping in the evaporation medium in the heat pipe, the vertical many radiation water pipes that are provided with in the box, the top of radiation water pipe is connected with the water converging pipe, and the bottom is connected with the wet return, vertically pass in the heat storage box and have many heat absorbing water pipes, the top of heat absorbing water pipe is worn out the heat storage box and is connected with the shunt pipe, and the bottom is worn to penetrate the box and be connected with the water converging pipe, the box is provided with the water tank outward, the wet return is worn out the box and is connected with the water tank, be connected with the water pump on the water tank, the water outlet of water pump has first solenoid valve through the pipe connection, two exports of first solenoid valve connect the shunt pipe respectively with the water converging pipe, one side of water converging pipe top is connected with many steam branch pipes, many steam pipe, and the steam generating set is all connected with the steam generator set in the box.

Through adopting above-mentioned technical scheme, through set up the heat pipe structure of many L shapes in the both sides of box structure, set up the heat storage box on the top of box, set up the horizontal part of heat pipe in the heat storage box, make the vertical part of heat pipe stretch into in the box simultaneously, after the thermal treatment is accomplished, the heat pipe can be with the efficient leading-in heat storage box of heat storage, simultaneously, set up the hydrologic cycle pipeline that communicates box and heat storage box are inside in the both sides of box, set up steam generator set on the top of box, according to the different processes in the box, make the water in the hydrologic cycle pipeline can evaporate the heat absorption back electricity generation in the in-process of circulation, can bring the heat in the heat storage box to the box again, the effectual energy that should give off to the external world in the box that has utilized, the while also saved the energy consumption of follow-up process.

The heat storage box is further arranged on two sides of the top end of the box body, the heat storage box is filled with heat storage media, the heat pipes comprise horizontal parts and vertical parts, the horizontal parts of the heat pipes are positioned in the heat storage box, the vertical parts penetrate into the box body, the total number of the heat pipes is four, the positions of the four heat pipes penetrating into the box body are respectively positioned at four corners in the box body, and each heat storage box comprises the horizontal parts of two heat pipes.

Through adopting above-mentioned technical scheme, can be when needs heat-retaining efficient heat in the box with the heat-retaining heat-pipe of box through distributing in the box four corners department in.

The invention is further arranged that the horizontal parts of the two heat pipes in the heat storage box are parallel to each other, and the plurality of heat absorption water pipes are parallel to the heat pipes in the heat storage box and are positioned between the two heat pipes.

Through adopting above-mentioned technical scheme, make the interior water of heat absorption water pipe can be efficient take away the heat of heat storage incasement to the box when in the heat storage incasement.

The invention is further characterized in that reflecting plates are arranged on two sides of the inner wall of the box body, reflecting plates with opposite inclination angles are arranged on two sides of the reflecting plates, the reflecting plates on the reflecting plates are perpendicular to the ground, and the reflecting plates are used for reflecting part of radiation in the box body to two sides of the reflecting plates.

By adopting the technical scheme, the radiation intensity at four corners in the box body can be effectively enhanced by the reflecting plate, so that the heat pipe can exchange heat more efficiently.

The invention is further arranged that the inner walls of the radiation water pipes close to the two sides of the box body are all provided.

By adopting the technical scheme, the radiation water pipe is utilized to absorb or release the thermal radiation in the vacuum box body, and the temperature in the box body is reduced or heated.

The invention is further arranged that the converging water pipe and the return water pipe are connected to the inner wall of the box body through the fixing support.

Through adopting above-mentioned technical scheme, make water converging pipe and wet return all can be stable set up in the box, effectively avoid in the box rivers to influence the stability of water converging pipe and wet return.

The invention is further characterized in that two guide rails are arranged at the bottom end in the box body, and a heating net is arranged between the two guide rails.

By adopting the technical scheme, the guide rail plays a role in guiding the carrier loaded with the rare earth permanent magnet material, so that the carrier can stably slide into the box body.

The invention is further arranged that the top end of one side of the water tank is connected with a water supplementing pipe.

By adopting the technical scheme, the water supplementing pipe is used for supplementing water into the box body and supplementing water consumed by evaporation of the pipeline in the box body.

In summary, the invention has the following advantages:

according to the invention, the L-shaped heat pipe structures are arranged on two sides of the box body structure, the heat storage box is arranged at the top end of the box body, the horizontal part of the heat pipe is arranged in the heat storage box, the vertical part of the heat pipe extends into the box body, after the heat treatment is finished, the heat pipe can efficiently guide heat into the heat storage box for storage, meanwhile, the water circulation pipelines communicated with the box body and the interior of the heat storage box are arranged on two sides of the box body, the steam generator set is arranged at the top end of the box body, and according to different procedures in the box body, water in the water circulation pipeline can be evaporated and absorbed to generate electricity in the circulation process, and the heat in the heat storage box can be brought into the box body, so that the energy which should be emitted to the outside in the box body is effectively utilized, and meanwhile, the energy consumption of subsequent procedures is also saved;

according to the invention, by designing the heat pipe heat storage structure, the heat pipe heat storage structure is firstly used for high-efficiency heat conduction under the condition of higher temperature in the box body, so that heat is stored, then under the condition of reduced temperature in the box body and reduced heat conduction efficiency, the water circulation pipeline is matched with the steam generator set, so that the heat in the box body is used for heating water to generate steam for generating electricity, and the energy which is originally emitted to the outside in the box body is recycled in a grading manner, so that the energy recycling efficiency is effectively improved;

according to the invention, the collecting box is arranged at the top end of the box body, so that the evaporating medium in the heat pipe is collected when the heat pipe is not required to conduct heat in the box body, the condition that the heat pipe continuously conducts heat to the heat storage box when the heat treatment process is normally carried out in the box body is avoided, and the heat storage medium in the heat storage box does not absorb heat as much as possible when the temperature is not required to rise, so that the high-efficiency heat storage performance can be maintained when the heat absorption is required;

according to the invention, the circulating water can bring heat in the heat storage box back into the box body in the flowing process by arranging the plurality of water pipes penetrating through the heat storage box and penetrating into the box body, so that the energy consumption required by heating can be effectively saved when a tempering process is performed.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is another perspective view of the present invention;

FIG. 3 is an inside perspective view of the present invention;

FIG. 4 is another perspective view of the present invention from the inside;

FIG. 5 is a top, interior view of the collection box of the present invention;

fig. 6 is a top inner view of the reflection plate of the present invention.

In the figure: 1. a case; 2. a heat storage tank; 3. a water tank; 4. a heat pipe; 5. a water pump; 6. a water supply pipe; 7. a first electromagnetic valve; 8. a confluence water pipe; 9. a water return pipe; 10. a water diversion pipe; 11. a heat absorbing water pipe; 12. a radiant water pipe; 13. a steam branch pipe; 14. a steam main pipe; 15. a steam generator set; 16. a steam outlet pipe; 17. a collection pipe; 18. a collection box; 19. a second electromagnetic valve; 20. a condenser; 21. a liquid storage tank; 22. a micropump; 23. a reflection plate; 24. a guide rail; 25. a heating net; 26. a vacuum unit; 27. a door; 28. and a water supplementing pipe.

Description of the embodiments

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the invention.

Hereinafter, an embodiment of the present invention will be described in accordance with its entire structure.

1-6, the heat treatment device for rare earth permanent magnet material comprises a box body 1, wherein one end of the box body 1 is provided with a box door 27, a sealing structure is arranged between the box door 27 and the box body 1, the top end of the box body 1 is also provided with a vacuum unit 26, and a vacuum pump is arranged in the vacuum unit and used for keeping the vacuum degree in the box body 1 at 10 ^-3 Near pa, the top of the box body 1 is provided with a heat storage box 2, a heat pipe 4 for guiding heat in the box body 1 to the heat storage box 2 is arranged between the heat storage box 2 and the box body 1, the heat pipe 4 is a high-temperature heat pipe, the temperature suitable for working is above 500 ℃, the top of the box body 1 is provided with a collecting box 18, the collecting box 18 is connected with the heat pipe 4 through a collecting pipe 17, the collecting box 18 is used for collecting and temporarily storing evaporating medium in the heat pipe 4, and the collecting box 18 is used for collecting and temporarily storing evaporating medium in the heat pipe 4The header 17 is connected with a second electromagnetic valve 19 in the collecting box 18, the second electromagnetic valve 19 is specifically a two-position three-way electromagnetic valve, two outlets of the second electromagnetic valve 19 are respectively connected with a condenser 20 and a micropump 22 through pipelines, the condenser 20 is connected with a liquid storage tank 21, the bottom end of the liquid storage tank 21 is connected with the micropump 22 through a pipeline, specifically, when the efficient heat conduction of the heat pipe 4 is not needed, the second electromagnetic valve 19 is communicated with a flow path between the collecting pipe 17 and the condenser 20, the vapor evaporated in the heat pipe 4 is condensed by the condenser 20 and then is collected into the liquid storage tank 21 for storage, and because the evaporating medium is not liquefied and flows back to the vertical part of the heat pipe 4, the evaporating medium in the heat pipe 4 is finally liquefied and then remains in the liquid storage tank 21, at this moment, the heat conductivity of the heat pipe 4 can be greatly reduced, the heat conduction of the heat pipe 4 to the heat storage tank 2 is avoided when the heat conduction capability of the heat pipe 4 is wanted to be recovered, the second electromagnetic valve 19 is communicated with a passage between the collecting pipe 17 and the micropump 22 to discharge the liquid evaporating medium in the liquid storage tank 21 to the heat returning pipe 4, at this time, the heat pipe 4 recovers heat conducting performance, a plurality of radiation water pipes 12 are vertically arranged in the tank body 1, the inner walls of the radiation water pipes 12 close to two sides of the tank body 1 are all provided, the radiation water pipes 12 are utilized to absorb or emit heat radiation in the vacuum tank body 1 to cool or heat the tank body 1, the top end of the radiation water pipe 12 is connected with a converging water pipe 8, the bottom end is connected with a return water pipe 9, a plurality of heat absorbing water pipes 11 vertically penetrate in the heat storage tank 2, the top end of the heat absorbing water pipe 11 penetrates out of the heat storage tank 2 to be connected with a water dividing pipe 10, the bottom end penetrates into the tank body 1 to be connected with the converging water pipe 8, a water tank 3 is arranged outside the tank body 1, the return water pipe 9 penetrates out of the tank body 1 to be connected with the water tank 3, the water pump 5 is connected with the water pump 3, the water outlet end of the water pump 5 is connected with a first electromagnetic valve 7 through a pipeline, a vertical water supply pipe 6 is connected to an outlet of the water pump 5, the top end of the water supply pipe 6 is connected with an inlet of the first electromagnetic valve 7, the first electromagnetic valve 7 is a two-position three-way electromagnetic valve, two outlets of the first electromagnetic valve 7 are respectively connected with a water diversion pipe 10 and a converging water pipe 8, one side of the top end of the converging water pipe 8 is connected with a plurality of steam branch pipes 13, the plurality of steam branch pipes 13 are connected to a steam main pipe 14 in a box body 1, the top end of the box body 1 is provided with a steam generator set 15, the steam generator set 15 is a small-sized steam generator set common in the prior art, the top end of the steam generator set is also provided with a steam outlet pipe 16, and a steam generator set is arranged at the top end of the converging water pipe 8The electric energy emitted by the motor group 15 can be integrated into the power grid of a factory after treatment or stored for subsequent heating energy consumption, the steam main pipe 14 penetrates out of the box body 1 to be connected with the steam generator group 15, specifically, when the temperature in the box body 1 needs to be reduced and cooled after the high-temperature treatment of heat treatment is finished, the collecting box 18 firstly discharges evaporating medium into the heat return pipe 4, the heat pipe 4 guides heat into the heat storage box 2 with high efficiency, when the temperature in the heat storage box 2 is not increased any more, the collecting box 18 starts to collect the evaporating medium in the heat pipe 4, the evaporating medium in the heat pipe 4 is stored in the liquid storage tank 21, the water pump 5 works, water in the water tank 3 flows circularly according to the water tank 3, the water pump 5, the water supply pipe 6, the first electromagnetic valve 7, the converging water pipe 8, the radiation water pipe 12, the water return pipe 9 and the water tank 3 in sequence, and the water in the flowing process, when the temperature in the box body 1 is reduced to the time when the energy generated by power generation is less than that of the water pump 5, the water pump 5 stops working, the water in the radiation water pipe 12 and the water return pipe 9 finally flows back into the water tank 3, the effect of reasonably and efficiently utilizing the waste heat in the box body 1 is achieved, when the temperature in the box body 1 needs to be raised and tempered, the first electromagnetic valve 7 is switched to the passage from the water supply pipe 6 to the water distribution pipe 10, the water pump 5 pumps the water in the water tank 3, and the water in the water tank 3, the water pump 5, the water supply pipe 6, the first electromagnetic valve 7, the water distribution pipe 10, the heat absorption water pipe 11, the confluence water pipe 8, the radiation water pipe 12, the water return pipe 9 and the water tank 3 sequentially circularly flow, the heat in the heat storage tank 2 is absorbed by water when passing through the heat absorption water pipe 11, and after the water absorbs heat and heats, the heat can be radiated into the tank body 1 when passing through the radiation water pipe 12, and the stored heat is fed back into the tank body 1, so that the waste heat in the tank body 1 is effectively utilized, and the energy consumption in the tempering process is saved.

Referring to fig. 3, heat storage tanks 2 are disposed on two sides of a top end of a tank body 1, the heat storage tanks 2 are filled with heat storage media, specifically, the heat storage media in the heat storage tanks 2 are magnesia bricks, the heat pipes 4 include horizontal portions and vertical portions, evaporation media for phase change heat conduction are filled in the heat pipes 4, the horizontal portions of the heat pipes 4 are located in the heat storage tanks 2, the vertical portions penetrate into the tank body 1, the heat pipes 4 are four in total, the positions of the four heat pipes 4 penetrating into the tank body 1 are located at four corners in the tank body 1 respectively, each heat storage tank 2 contains horizontal portions of two heat pipes 4, heat in the tank body 1 can be efficiently guided into the heat storage tank 2 when heat storage is needed through the heat pipes distributed at the four corners in the tank body 1, the horizontal portions of the two heat pipes 4 are parallel to each other, and a plurality of heat absorption water pipes 11 are all parallel to the heat pipes 4 in the tank 2 and located between the two heat pipes 4, so that water in the heat absorption water pipes 11 can efficiently take away heat in the heat storage tank 2 into the tank body 1 when passing through the heat storage tank 2.

Referring to fig. 6, reflecting plates 23 are disposed on two sides of the inner wall of the case 1, since the case 1 is in a vacuum environment, most of heat is transferred in the case 1, the heat in the case is radiated on the reflecting plates, and is radiated to four corners in the case 1 by reflection of the reflecting plates 23, specifically, the reflecting plates are covered with high-temperature resistant metal plates with high smoothness, two sides of the reflecting plates 23 are provided with reflecting plates with opposite inclination angles, specifically, the reflecting plates are bounded by the middle of the reflecting plates 23, two sides are inclined towards the adjacent heat pipes 4 respectively, the reflecting plates on the reflecting plates 23 are perpendicular to the ground, the reflecting plates 23 are used for reflecting part of the radiation in the case 1 to two sides of the reflecting plates 23, and the reflecting plates 23 can effectively enhance radiation intensity at the four corners in the case 1, so that the heat pipes 4 can exchange heat more efficiently.

Referring to fig. 2, a water replenishing pipe 28 is connected to the top end of one side of the water tank 3, and the water replenishing pipe 28 is used for replenishing water into the tank 1 to replenish water consumed by evaporation in the tank 1.

Referring to fig. 3, two guide rails 24 are disposed at the bottom end in the box 1, a heating net 25 is disposed between the two guide rails 24, the guide rails 24 guide the carrier loaded with the rare earth permanent magnet material, so that the carrier can stably slide into the box 1, the carrier vehicle loaded with the rare earth permanent magnet material is effectively prevented from impacting the radiation water pipes 12 at two sides, the water converging pipe 8 and the water returning pipe 9 are connected on the inner wall of the box 1 through fixing brackets, and the water converging pipe 8 and the water returning pipe 9 are stably disposed in the box 1, so that the stability of the water converging pipe 8 and the water returning pipe 9 is effectively prevented from being influenced by water flow in the box 1.

Although embodiments of the invention have been shown and described, the detailed description is to be construed as exemplary only and is not limiting of the invention as the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples, and modifications, substitutions, variations, etc. may be made in the embodiments as desired by those skilled in the art without departing from the principles and spirit of the invention, provided that such modifications are within the scope of the appended claims.

Claims

1. The heat treatment device for the rare earth permanent magnet material comprises a box body (1), and is characterized in that: the utility model discloses a water pump, including box (1) and water pump, heat storage box (2) are provided with on the top of box (1), be provided with between heat storage box (2) and box (1) and be used for heat pipe (4) with heat storage box (2) in heat storage box (1), box (1) top is provided with collecting box (18), be connected through collecting pipe (17) between collecting box (18) and heat pipe (4), collecting box (18) are used for collecting and temporarily storing the evaporating medium in heat pipe (4), vertical being provided with many radiation water pipes (12) in box (1), the top of radiation water pipe (12) is connected with water collecting pipe (8), and the bottom is connected with water return pipe (9), vertical passing in heat storage box (2) has many heat absorption water pipes (11), the top of heat absorption water pipe (11) is worn out heat storage box (2) and is connected with water distributing pipe (10), and the bottom is worn out box (1) and is connected with water pipe (8), box (1) is provided with water tank (3) outward, water return pipe (9) are worn out box (1) and are connected with water pump (5) through water pump (7), two outlets of the first electromagnetic valve (7) are respectively connected with a water diversion pipe (10) and a converging water pipe (8), one side of the top end of the converging water pipe (8) is connected with a plurality of steam branch pipes (13), the steam branch pipes (13) are connected to a steam main pipe (14) in the box body (1), a steam generator set (15) is arranged at the top end of the box body (1), and the steam main pipe (14) penetrates out of the box body (1) to be connected with the steam generator set (15).

2. The heat treatment device for rare earth permanent magnet material according to claim 1, wherein: the utility model discloses a heat storage box, including box (1), heat storage box (2), heat pipe (4) are located box (2), and vertical portion penetrates box (1), four heat pipe (4) penetrate the position of box (1) respectively in four corners in box (1), every all contain the horizontal part of two heat pipes (4) in heat storage box (2), heat pipe (4) both sides on box (1) top all are provided with heat storage box (2), heat storage box (2) are filled with heat storage medium, heat pipe (4) are located horizontal part and vertical portion.

3. The heat treatment device for rare earth permanent magnet material according to claim 2, wherein: the horizontal parts of the two heat pipes (4) in the heat storage box (2) are parallel to each other, and the plurality of heat absorption water pipes (11) are parallel to the heat pipes (4) in the heat storage box (2) and are positioned between the two heat pipes (4).

4. The heat treatment device for rare earth permanent magnet material according to claim 1, wherein: the novel solar cell is characterized in that reflecting plates (23) are arranged on two sides of the inner wall of the box body (1), reflecting plates with opposite inclination angles are arranged on two sides of the reflecting plates (23), the reflecting plates on the reflecting plates (23) are perpendicular to the ground, and the reflecting plates (23) are used for reflecting partial radiation in the box body (1) to two sides of the reflecting plates (23).

5. The heat treatment device for rare earth permanent magnet material according to claim 1, wherein: the inner walls of the radiation water pipes (12) close to the two sides of the box body (1) are respectively provided.

6. The heat treatment device for rare earth permanent magnet material according to claim 1, wherein: the converging water pipe (8) and the return water pipe (9) are connected to the inner wall of the box body (1) through a fixed support.

7. The heat treatment device for rare earth permanent magnet material according to claim 1, wherein: two guide rails (24) are arranged at the bottom end in the box body (1), and a heating net (25) is arranged between the two guide rails (24).

8. The heat treatment device for rare earth permanent magnet material according to claim 1, wherein: the top of one side of the water tank (3) is connected with a water supplementing pipe (28).