A hydrogen pulverizing device for rare earth magnetic materials

Abstract

The present invention provides a hydrogen pulverizing device for rare earth magnetic materials, including a furnace body, a material barrel, a first driving mechanism, a barrel cover mechanism, a furnace door mechanism, a material receiving trough and a material turning mechanism. The material barrel is rotatably arranged in the furnace body, the material barrel is provided with a first material port, and the circumferential side wall of the material barrel is provided with a plurality of through holes. The material receiving trough is used to receive materials dropped from the through hole or the first material port. The material turning mechanism is arranged in the furnace body, and the material turning mechanism is used to turn over the materials in the material receiving trough. By opening a plurality of through holes in the material barrel, hydrogen enters the interior of the material barrel through the through holes, so that the material in the material barrel can absorb hydrogen, thereby realizing the hydrogen pulverizing operation. At the same time, by designing the material barrel as a rotatable structure, the hydrogen absorption and dehydrogenation effects of the material can be improved, thereby shortening the processing time of the entire hydrogen pulverizing, and further improving the pulverizing processing efficiency of the material.

Description

Technical Field

[0001] The invention relates to the technical field of magnetic material processing equipment, and in particular to a hydrogen pulverizing device for rare earth magnetic materials. Background Art

[0002] With the advancement of science and technology and the development of industry, the demand for rare earth magnetic materials continues to grow, especially in the new energy industry and high-end manufacturing industry. 14 B) As a new generation of rare earth permanent magnet material, it has extremely high magnetic energy product and coercivity, and is widely used in computers, printers, mobile phones, home appliances, health care, aerospace and other industries.

[0003] The hydrogen pulverization (HD) method uses the chemical reaction between hydrogen and NdFeB alloy to achieve coarse pulverization of materials. The hydrogen pulverization process is mainly divided into three stages, namely hydrogen absorption-dehydrogenation-cooling. During the hydrogen absorption process, due to the different hydrogen absorption rates and expansion coefficients of the NdFeB phase (main phase) and the Nd-rich phase, the stress generated between the main phase and the Nd-rich phase leads to grain boundary fracture and perforation fracture, which pulverizes the alloy. The alloy powder crushed by the hydrogen pulverization method has fine particles, low oxidation degree, many single particles, and the powder is brittle, which is easy to be crushed in the subsequent air flow mill pulverization process, thereby saving time and reducing energy consumption. Therefore, the hydrogen pulverization method is one of the necessary means to prepare high-performance magnets.

[0004] At present, domestic research on NdFeB alloy crushing mainly focuses on the process, while there is less research on hydrogen crushing equipment. How to improve the hydrogen absorption and dehydrogenation effects of NdFeB alloy during the processing process, and then improve the crushing efficiency, is an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0005] In view of the defects in the prior art, the purpose of the present invention is to provide a hydrogen pulverization device for rare earth magnetic materials, so as to improve the hydrogen absorption and dehydrogenation effects of the materials during the processing, thereby improving the pulverization processing efficiency.

[0006] In order to achieve the above-mentioned purpose, the present invention provides a hydrogen pulverization device for rare earth magnetic materials, comprising a furnace body, provided with an exhaust pipe, a first air inlet pipe and a second air inlet pipe connected to the inner cavity thereof, a feeding mechanism being provided on the furnace top of the furnace body, and an opening being provided on the bottom of the furnace body; a material barrel being rotatably arranged in the furnace body, the material barrel being provided with a first material port, a circumferential side wall of the material barrel being provided with a plurality of through holes, the material barrel having a feeding position and a discharging position, when the material barrel is in the feeding position, the first material port is upward and can be aligned with the feeding mechanism, and when the material barrel is in the discharging position, the first material port is downward; a first driving mechanism is used to drive the material barrel to rotate, and can make the material barrel stay at the feeding position or the discharging position;

[0007] A barrel cover mechanism, used for sealing or opening the first material opening; a furnace door mechanism, including a furnace door body and a second driving mechanism, the second driving mechanism being used for driving the furnace door body to rise and fall so that the furnace door body seals or opens the opening; a material receiving trough, provided on the furnace door body, the material receiving trough being used for receiving materials dropped from the through hole or the first material opening; and a material turning mechanism, provided in the furnace body, the material turning mechanism being used for turning over the materials in the material receiving trough.

[0008] Preferably, the barrel cover mechanism includes: a cover plate, which is slidably fitted on the outer wall of the material barrel and can cover the first material opening, the cover plate is provided with a second material opening, and the second material opening can be aligned with the first material opening; two groups of elastic components, used to apply elastic resistance to the cover plate so that the cover plate covers the first material opening, the two groups of elastic components are respectively arranged at both ends of the material barrel, the elastic components include a first support, a second support and an elastic member, the first support is provided on the cover plate, the second support is provided on the end cover of the material barrel, and the elastic member is respectively connected to the first support and the second support; and a third driving mechanism, used to push the cover plate to move when the material barrel is in the feeding position or the discharging position so that the second material opening is aligned with the first material opening.

[0009] Preferably, the third driving mechanism includes a first push rod, a second push rod, a first telescopic driving member and a second telescopic driving member, the first push rod and the second push rod are both movably arranged on the furnace body and extend into the furnace body, and the first push rod and the second push rod are respectively arranged on both sides of the material barrel; the first telescopic driving member and the second telescopic driving member are both arranged outside the furnace body, the first telescopic driving member is used to drive the first push rod to perform a telescopic action, and the second telescopic driving member is used to drive the second push rod to perform a telescopic action; when the material barrel is in the feeding position, the first push rod can push the cover plate to move; when the material barrel is in the discharging position, the second push rod can push the cover plate to move.

[0010] Preferably, the two end covers of the material barrel are respectively provided with a limit seat, and the limit seat is provided with a limit groove on one side facing the other limit seat, and the cover plate slides in the two limit grooves; two groups of limit parts are provided on the cover plate, each group of limit parts corresponds to one limit seat, and the limit parts include a first limit block and a second limit block; when the cover plate covers the first material port, the first limit block abuts against the limit seat; when the second material port is aligned with the first material port, the second limit block abuts against the limit seat.

[0011] Preferably, two of the first material openings and two of the second material openings are provided, and the two first material openings extend along the length direction of the material barrel; a conical material guide portion is provided in the material barrel, and the conical material guide portion is provided between the two first material openings, and the conical material guide portion is provided with two first material guide slopes, and the inner side wall of the material barrel is provided with two second material guide slopes, and each first material guide slope corresponds to one first material opening.

[0012] Preferably, the material turning mechanism includes: a first guide shaft, which is arranged below the material barrel; a material turning rake, which is slidably and non-rotatably engaged on the first guide shaft, and the material turning rake is arranged in the material receiving trough; two fourth driving mechanisms, which are used to drive the first guide shaft to move in a direction parallel to the rotation axis of the material barrel, and the two fourth driving mechanisms are respectively arranged on both sides of the material receiving trough; and two fifth driving mechanisms, which are used to drive the material turning rake to move on the first guide shaft, and the two fifth driving mechanisms are respectively arranged on both sides of the material receiving trough.

[0013] Preferably, the fourth driving mechanism comprises a screw rod, a first motor and a nut seat, the screw rod is arranged in the furnace body, and both ends of the screw rod are respectively rotatably engaged with the side wall of the furnace body; the first motor is arranged outside the furnace body and is drivingly connected to the screw rod; the nut seat is threadedly engaged with the screw rod and is connected to the first guide shaft;

[0014] The fifth driving mechanism includes a second guide shaft, a second motor, a reel and a pull rope, the second guide shaft is arranged parallel to the screw, the second guide shaft is arranged in the furnace body, and the two ends of the second guide shaft are respectively rotatably engaged on the side walls of the furnace body; the second motor is arranged outside the furnace body and is transmission-connected to the second guide shaft; the reel slides and engages on the second guide shaft without relative rotation, one end of the pull rope is connected to the material turning rake, and the other end of the pull rope is wound around the reel; two third limit blocks are provided on the nut seat, the third limit blocks are provided with a clearance hole for the second guide shaft to pass through, and the two third limit blocks are respectively abutted against the two sides of the reel.

[0015] Preferably, it further comprises a discharge chamber, the furnace body is arranged above the discharge chamber, the second driving mechanism is arranged in the discharge chamber, and the furnace door body and the material receiving trough can be lowered into the discharge chamber.

[0016] Beneficial effects of the present invention:

[0017] The present invention discloses a hydrogen crushing device for rare earth magnetic materials, which opens a plurality of through holes on a material barrel, and hydrogen enters the material barrel through the through holes, so that the material in the material barrel can absorb hydrogen, thereby realizing the hydrogen crushing operation. At the same time, by designing the material barrel into a rotatable structure, the hydrogen absorption and dehydrogenation effects of the material can be improved, thereby shortening the entire hydrogen crushing processing time, and further improving the crushing processing efficiency of the material.

[0018] During the processing, the material turning mechanism can continuously turn the material in the receiving trough. In this way, the problem of the lower layer of material in the receiving trough not being able to fully contact with the hydrogen due to the accumulation of material in the receiving trough is avoided. In this way, the contact area between the material in the receiving trough and the hydrogen is increased, the hydrogen absorption and dehydrogenation effect of the material is improved, and the hydrogen crushing effect is further improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0020] Figure 1 A schematic structural diagram of a hydrogen pulverization device for rare earth magnetic materials provided in one embodiment of the present invention;

[0021] Figure 2 It is a schematic diagram of the structure inside the furnace;

[0022] Figure 3 It is a structural schematic diagram of the material barrel and the cover plate;

[0023] Figure 4 It is a structural schematic diagram of a material barrel;

[0024] Figure 5 is a structural schematic diagram of the cover plate;

[0025] Figure 6 It is a structural schematic diagram of the first material port and the second material port being aligned;

[0026] Figure 7 It is a side view of the cover plate sealing the first material opening;

[0027] Figure 8 It is a side view of the cover plate when the first material opening is opened;

[0028] Fig. 9 for Figure 8 Schematic diagram of the cross section under the state;

[0029] Fig.10 It is a schematic diagram of the structure inside the material barrel;

[0030] Fig.11 It is a structural schematic diagram when the material barrel is in the feeding position;

[0031] Fig.12 It is a structural schematic diagram when the material barrel is in the discharge position;

[0032] Fig.13 It is a structural schematic diagram of the coordination between the material turning mechanism and the material receiving chute;

[0033] Fig.14 It is a partial schematic diagram of a material turning rake;

[0034] Fig.15 It is a schematic diagram of the structure in which the first guide shaft, the nut seat, the lead screw, the second guide shaft, the reel and the third limiting hole cooperate with each other;

[0035] Fig.16 It is a structural schematic diagram of the nut seat;

[0036] Fig.17 for Fig.13 Schematic diagram of the cross section under the state;

[0037] Fig.18 It is a structural schematic diagram of the furnace door body sealing opening;

[0038] Fig.19 It is a structural schematic diagram of the furnace door body and the material receiving chute descending to the discharge chamber;

[0039] Reference numerals:

[0040] 10. furnace body; 11. exhaust pipe; 12. first air inlet pipe; 13. second air inlet pipe; 14. feeding mechanism; 15. opening; 20. material barrel; 21. first material port; 22. through hole; 23. stopper seat; 231. stopper groove; 24. conical material guide portion; 241. first material guide slope; 25. second material guide slope; 30. Barrel cover mechanism; 31. Cover plate; 311. Second material port; 312. First limit block; 313. Second limit block; 32. Elastic component; 321. First support; 322. Second support; 323. Elastic member; 33. Third driving mechanism; 331. First push rod; 332. Second push rod; 40. Furnace door mechanism; 41. Furnace door body; 42. Second driving mechanism; 50. Material receiving trough; 60. Material turning mechanism; 61. First guide shaft; 62. Material turning rake; 63. Fourth driving mechanism; 631. Screw; 632. Nut seat; 633. Third limit block; 634. Make way hole; 64. Fifth driving mechanism; 641. Second guide shaft; 642. Reel; 643. Pull rope; 70. Discharging chamber. DETAILED DESCRIPTION

[0041] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0042] It should be noted that, unless otherwise specified, the technical terms or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0043] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0044] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present invention, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0045] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0047] like Figure 1-19 As shown, in one embodiment of the present invention, a hydrogen pulverizing device for rare earth magnetic materials is provided, including a furnace body 10, a material barrel 20, a first driving mechanism, a barrel cover mechanism 30, a furnace door mechanism 40, a material receiving trough 50 and a material turning mechanism 60.

[0048] The furnace body 10 is provided with an exhaust pipe 11, a first air inlet pipe 12 and a second air inlet pipe 13 connected to its inner cavity, and the exhaust pipe 11, the first air inlet pipe 12 and the second air inlet pipe 13 are all provided with valves. A feeding mechanism 14 is provided on the top of the furnace body 10, and an opening 15 is provided at the bottom of the furnace body 10. The feeding mechanism 14 can be a feeding port that can be opened or closed on the top of the furnace body 10, and the material barrel 20 is fed manually. The feeding mechanism 14 can also be an automatic feeding device that can be telescoped into the interior of the furnace body 10, and automatic feeding is achieved through program control. The feeding mechanism 14 is a prior art and will not be described in detail in this embodiment.

[0049] The material barrel 20 is rotatably arranged in the furnace body 10 through a rotating shaft. The material barrel 20 is provided with a first material port 21. The circumferential side wall of the material barrel 20 is provided with a plurality of through holes 22. The material barrel 20 has a feeding position and a discharging position. When the material barrel 20 is in the feeding position, the first material port 21 faces upward and can be aligned with the feeding mechanism 14. When the material barrel 20 is in the discharging position, the first material port 21 faces downward. The first driving mechanism is used to drive the material barrel 20 to rotate and can make the material barrel 20 stay at the feeding position or the discharging position. The barrel cover mechanism 30 is used to cover or open the first material port 21.

[0050] The furnace door mechanism 40 includes a furnace door body 41 and a second driving mechanism 42, and the second driving mechanism 42 is used to drive the furnace door body 41 to rise and fall, so that the furnace door body 41 covers or opens the opening 15. The material receiving trough 50 is provided on the furnace door body 41, and the material receiving trough 50 is used to receive the material dropped from the through hole 22 or the first material port 21. The material turning mechanism 60 is provided in the furnace body 10, and the material turning mechanism 60 is used to turn over the material in the material receiving trough 50.

[0051] The working process of hydrogen crushing using this device is as follows:

[0052] The first driving mechanism first drives the material barrel 20 to rotate to the feeding position, and then the barrel cover mechanism 30 opens the first material port 21, and the feeding mechanism 14 can feed the material to be crushed (rare earth magnetic alloy, generally in block structure) into the material barrel 20 through the first material port 21. After the feeding is completed, the barrel cover mechanism 30 re-seals the first material port 21, and at this time, the furnace door is in the state of covering the opening 15. Then, the furnace body 10 is first positively pressurized and then vacuumed to confirm the positive pressure and vacuum states.

[0053] Then, hydrogen is introduced into the furnace body 10 through the first air inlet pipe 12 to a positive pressure, and the first driving mechanism drives the material barrel 20 to rotate, and the hydrogen enters the material barrel 20 through the through hole 22, and the material absorbs hydrogen. During the crushing process, a portion of the crushed fine fragments and powder will fall from the through hole 22 into the receiving trough 50, at which time the turning mechanism 60 starts to start, and the turning mechanism 60 will continuously turn the material in the receiving trough 50.

[0054] After the crushing is completed, the first driving mechanism continues to drive the material barrel 20 to rotate, heat the material barrel 20 for dehydrogenation, and release hydrogen from the material. A heating mechanism (not shown) made of graphite or the like that is resistant to hydrogen is provided in the furnace body 10, and the heating mechanism is powered by a power source outside the furnace.

[0055] After dehydrogenation is completed, an inert gas (such as argon or nitrogen) is introduced into the furnace body 10 through the second air inlet pipe 13 to cool the material crushed by hydrogen. After cooling, the first drive mechanism drives the material barrel 20 to rotate to the discharge position, and then the barrel cover mechanism 30 opens the first material opening 21, so that the crushed material will fall from the first material opening 21 into the receiving trough 50. Finally, the second drive mechanism 42 drives the furnace door body 41 and the receiving trough 50 to descend as a whole, so that the crushed material can be sent to the subsequent process.

[0056] The present embodiment discloses a hydrogen pulverization device for rare earth magnetic materials, which opens a plurality of through holes 22 on a material barrel 20, and hydrogen enters the material barrel 20 through the through holes 22, so that the material in the material barrel 20 can absorb hydrogen, thereby realizing the hydrogen pulverization operation. At the same time, by designing the material barrel 20 as a rotatable structure, the hydrogen absorption and dehydrogenation effects of the material can be improved, thereby shortening the entire hydrogen pulverization processing time, and further improving the pulverization processing efficiency of the material.

[0057] During the processing, the material turning mechanism 60 can continuously turn the material in the receiving trough 50. In this way, the problem that the lower layer of material in the receiving trough 50 cannot fully contact with the hydrogen due to the accumulation of covering is avoided. In this way, the contact area between the material in the receiving trough 50 and the hydrogen is increased, the hydrogen absorption and dehydrogenation effect of the material is improved, and the hydrogen crushing effect is further improved.

[0058] See also Figures 3 to 10 In one embodiment, the barrel cover mechanism 30 includes a cover plate 31, two sets of elastic components 32 and a third driving mechanism 33. The cover plate 31 is slidably fitted on the outer side wall of the material barrel 20 and can cover the first material opening 21. The cover plate 31 is provided with a second material opening 311, and the second material opening 311 can be aligned with the first material opening 21. The two sets of elastic components 32 are used to apply elastic resistance to the cover plate 31 so that the cover plate 31 covers the first material opening 21. The two sets of elastic components 32 are arranged at both ends of the material barrel 20 respectively. The elastic component 32 includes a first support 321, a second support 322 and an elastic member 323. The first support 321 is arranged on the cover plate 31, and the second support 322 is arranged on the end cover of the material barrel 20. The elastic member 323 is selected from a high temperature resistant spring, and the elastic member 323 is respectively connected to the first support 321 and the second support 322.

[0059] The third driving mechanism 33 is used to push the cover plate 31 to move when the material barrel 20 is in the feeding position or the discharging position, so that the second material opening 311 is aligned with the first material opening 21. Specifically, the third driving mechanism 33 includes a first push rod 331, a second push rod 332, a first telescopic driving member and a second telescopic driving member (not shown in the figure), the first push rod 331 and the second push rod 332 are both movably arranged on the furnace body 10 and extend into the furnace body 10, and the first push rod 331 and the second push rod 332 are respectively arranged on both sides of the material barrel 20. The first telescopic driving member and the second telescopic driving member are both arranged outside the furnace body 10, the first telescopic driving member is used to drive the first push rod 331 to perform a telescopic action, and the second telescopic driving member is used to drive the second push rod 332 to perform a telescopic action.

[0060] See also Fig.11When the material barrel 20 is in the feeding position, the first telescopic driving member can drive the first push rod 331 to extend, and the first push rod 331 will push the cover plate 31 to move, so that the second material opening 311 is gradually aligned with the first material opening 21. During the movement of the cover plate 31, the first support 321 will further compress the elastic member 323. After the material barrel 20 is loaded with materials, the first telescopic driving member drives the first push rod 331 to retract, and the two elastic members 323 work together to push the two first supports 321 on the cover plate 31, so that the cover plate 31 will re-seal the first material opening 21. During the rotation of the material barrel 20, the newly added material will not fall out from the first material opening 21 and the second material opening 311, ensuring the normal progress of the hydrogen crushing process.

[0061] See also Fig.12 When the material barrel 20 is in the discharge position, the second telescopic driving member can drive the second push rod 332 to extend, and the second push rod 332 will push the cover plate 31 to move, so that the second material opening 311 is gradually aligned with the first material opening 21, and the material in the material barrel 20 will fall into the receiving trough 50. After the discharge is completed, the second telescopic driving member drives the second push rod 332 to retract, and the two elastic members 323 work together to push the two first supports 321 on the cover plate 31, so that the cover plate 31 will re-seal the first material opening 21.

[0062] Furthermore, the two end covers of the material barrel 20 are respectively provided with a limit seat 23, and the limit seat 23 is provided with a limit groove 231 on one side facing the other limit seat 23, and the cover plate 31 is slidably fitted in the two limit grooves 231. Two groups of limit parts are provided on the cover plate 31, each group of limit parts corresponds to a limit seat 23, and the limit parts include a first limit block 312 and a second limit block 313. When the cover plate 31 covers the first material opening 21, the first limit block 312 abuts against the limit seat 23. When the second material opening 311 is aligned with the first material opening 21, the second limit block 313 abuts against the limit seat 23.

[0063] Under the limiting action of the two limiting seats 23, the cover plate 31 can be stably limited to the outer wall of the material barrel 20, and the sliding effect of the cover plate 31 is ensured. At the same time, by designing two sets of limiting parts, the first limiting block 312 and the second limiting block 313 can limit the moving position of the cover plate 31, thereby ensuring the sealing effect of the cover plate 31 on the first material opening 21, and ensuring that the first material opening 21 and the second material opening 311 can be accurately aligned, so that the feeding or discharging process is smoother.

[0064] In one embodiment, two first material ports 21 and two second material ports 311 are provided, and the two first material ports 21 extend along the length direction of the material barrel 20. A conical material guide portion 24 is provided in the material barrel 20, and the conical material guide portion 24 is provided between the two first material ports 21. The conical material guide portion 24 is provided with two first material guide slopes 241, and the inner side wall of the material barrel 20 is provided with two second material guide slopes 25, and each first material guide slope 241 and each second material guide slope 25 correspond to one first material port 21.

[0065] When the material barrel 20 is in the discharge position and the first material opening 21 is aligned with the second material opening 311, the crushed material in the material barrel 20 is discharged along the first material guide slope 241 and the second material guide slope 25, and then falls into the receiving trough 50. By designing the conical material guide portion 24, the first material guide slope 241 and the second material guide slope 25, the material in the material barrel 20 can be easily dropped out without human intervention.

[0066] See also Figures 13 to 17 In one embodiment, the material turning mechanism 60 includes a first guide shaft 61, a material turning rake 62, two fourth drive mechanisms 63 and two fifth drive mechanisms 64. The first guide shaft 61 is arranged below the material barrel 20, and the material turning rake 62 is slidably and non-rotatably engaged on the first guide shaft 61, and the material turning rake 62 is arranged in the material receiving trough 50. The two fourth drive mechanisms 63 are used to drive the first guide shaft 61 to move in a direction parallel to the rotation axis of the material barrel 20, and the two fourth drive mechanisms 63 are respectively arranged on both sides of the material receiving trough 50. The two fifth drive mechanisms 64 are used to drive the material turning rake 62 to move on the first guide shaft 61, and the two fifth drive mechanisms 64 are respectively arranged on both sides of the material receiving trough 50.

[0067] Specifically, the fourth driving mechanism 63 includes a screw rod 631, a first motor (not shown in the figure) and a nut seat 632. The screw rod 631 is arranged in the furnace body 10, and the two ends of the screw rod 631 are respectively rotatably matched on the side wall of the furnace body 10. The first motor is arranged outside the furnace body 10 and is transmission-connected to the screw rod 631. The nut seat 632 is threadedly matched on the screw rod 631 and connected to the first guide shaft 61.

[0068] The fifth driving mechanism 64 includes a second guide shaft 641, a second motor (not shown in the figure), a reel 642 and a pull rope 643. The second guide shaft 641 is arranged in parallel with the screw rod 631. The second guide shaft 641 is arranged in the furnace body 10. The two ends of the second guide shaft 641 are respectively rotatably matched on the side wall of the furnace body 10. The outer side walls of the first guide shaft 61 and the second guide shaft 641 are both provided with a stop protrusion. The second motor is arranged outside the furnace body 10 and is in transmission connection with the second guide shaft 641. The reel 642 is slidably matched on the second guide shaft 641 without relative rotation. One end of the pull rope 643 is connected to the material turning rake 62, and the other end of the pull rope 643 is wound on the reel 642. Two third limit blocks 633 are provided on the nut seat 632. The third limit blocks 633 are provided with a clearance hole 634 for the second guide shaft 641 to pass through. The two third limit blocks 633 are respectively abutted on both sides of the reel 642.

[0069] When the material in the docking trough 50 is turned over, the two first motors are started at the same time, thereby driving the two screw rods 631 to rotate respectively. Driven by the two nut seats 632, the first guide shaft 61 and the turning rake 62 are moved in the material receiving trough 50, so that the material accumulated in the docking trough 50 can be turned over.

[0070] If the turning rake 62 cannot move along the axial direction of the first guide shaft 61, the moving path of the turning rake 62 in the material receiving trough 50 is constant, so that only the materials on the constant path can be turned. Therefore, by designing two fifth driving mechanisms 64, the turning rake 62 can be driven to move along the axial direction of the first guide shaft 61.

[0071] In order to explain in detail the working principle of the material turning rake 62 moving on the first guide shaft 61, the two fourth drive mechanisms 63 are respectively recorded as the fourth drive mechanism 63a and the fourth drive mechanism 63b, and the two fifth drive mechanisms 64 are respectively recorded as the fifth drive mechanism 64a and the fifth drive mechanism 64b. The fourth drive mechanism 63a and the fifth drive mechanism 64a are located on the same side, and the fourth drive mechanism 63b and the fifth drive mechanism 64b are located on the same side.

[0072] For example, when it is necessary to drive the material turning rake 62 to move toward the screw rod 631a, the second motor a and the second motor b are started at the same time, so that the second guide shaft 641a and the second guide shaft 641b will rotate synchronously, then the reel 642a will perform a winding action, and the reel 642b will perform an unwinding action, so that the pull rope 643a and the pull rope 643b cooperate with each other, thereby pulling the material turning rake 62 on the first guide shaft 61 toward the screw rod 631a, so that the position of the material turning rake 62 is adjusted.

[0073] When it is necessary to turn the material in the receiving trough 50, the two first motors a are started at the same time, thereby driving the screw rod 631a and the screw rod 631b to rotate respectively. Driven by the nut seat 632a and the nut seat 632b, the first guide shaft 61 and the turning rake 62 will move in the receiving trough 50 along the direction parallel to the axial direction of the screw rod 631a.

[0074] Since two third limit blocks 633a are provided on the nut seat 632a, and two third limit blocks 633b are provided on the nut seat 632b, taking the nut seat 632a as an example, when the nut seat 632a moves, the two third limit blocks 633a will push the reel 642a to move on the second guide shaft 641a, so that the reel 642a moves synchronously with the material turning rake 62. When the second guide shaft 641a rotates, there will be no interference between the second guide shaft 641a and the nut seat 632a and the two third limit blocks 633a, so the rotation of the second guide shaft 641a will only drive the reel 642a to rotate.

[0075] Therefore, with the cooperation of the two fourth driving mechanisms 63 and the fifth driving mechanism 64, the position of the material turning rake 62 on the first guide shaft 61 can be adjusted. In this way, the problem that the lower layer of materials in the receiving trough 50 cannot fully contact with the hydrogen due to covering and accumulation is avoided. In this way, the contact area between the material in the receiving trough 50 and the hydrogen is increased, so that the material in the receiving trough 50 can continue to dehydrogenate and absorb hydrogen, further improving the hydrogen crushing effect.

[0076] See also Fig.18 and Fig.19 In one embodiment, the hydrogen pulverizing device further includes a discharge chamber 70, the furnace body 10 is disposed above the discharge chamber 70, the second driving mechanism 42 is disposed in the discharge chamber 70, and the furnace door body 41 and the receiving trough 50 can be lowered into the discharge chamber 70. Before the second driving mechanism 42 drives the furnace door and the receiving trough 50 to descend, the discharge chamber 70 is first filled with an inert gas, so that when the furnace door body 41 and the receiving trough 50 are lowered into the discharge chamber 70, the material in the receiving trough 50 is prevented from contacting the atmosphere, thereby effectively preventing the material from being oxidized and generating heat.

[0077] In the description of the present invention, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0078] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A hydrogen pulverization device for rare earth magnetic materials, characterized in that: include: A furnace body (10) is provided with an exhaust pipe (11), a first air intake pipe (12) and a second air intake pipe (13) which are communicated with the inner cavity thereof; a charging mechanism (14) is provided at the top of the furnace body (10); and an opening (15) is provided at the bottom of the furnace body (10); A material barrel (20) is rotatably disposed in the furnace body (10), the material barrel (20) is provided with a first material opening (21), a circumferential side wall of the material barrel (20) is provided with a plurality of through holes (22), the material barrel (20) has a feeding position and a discharging position, when the material barrel (20) is in the feeding position, the first material opening (21) faces upward and can be aligned with the feeding mechanism (14), when the material barrel (20) is in the discharging position, the first material opening (21) faces downward; A first driving mechanism, used for driving the material barrel (20) to rotate, and enabling the material barrel (20) to stay at the feeding position or the discharging position; A barrel cover mechanism (30) used for sealing or opening the first material opening (21); A furnace door mechanism (40) comprising a furnace door body (41) and a second driving mechanism (42), wherein the second driving mechanism (42) is used to drive the furnace door body (41) to rise and fall, so that the furnace door body (41) covers or opens the opening (15); a material receiving trough (50) provided on the furnace door body (41), the material receiving trough (50) being used to receive materials dropped from the through hole (22) or the first material opening (21); as well as a material turning mechanism (60) disposed in the furnace body (10), the material turning mechanism (60) being used to turn over materials in the material receiving trough (50); Wherein, the material turning mechanism (60) comprises: A first guide shaft (61) is disposed below the material barrel (20); a material turning rake (62) which is slidably engaged with the first guide shaft (61) without relative rotation, and the material turning rake (62) is arranged in the material receiving trough (50); Two fourth driving mechanisms (63) for driving the first guide shaft (61) to move in a direction parallel to the rotation axis of the material barrel (20), the two fourth driving mechanisms (63) being arranged on both sides of the material receiving trough (50) respectively; and Two fifth driving mechanisms (64) for driving the material turning rake (62) to move on the first guide shaft (61), the two fifth driving mechanisms (64) being arranged on both sides of the material receiving trough (50) respectively; The fourth driving mechanism (63) comprises a screw rod (631), a first motor and a nut seat (632); the screw rod (631) is arranged in the furnace body (10), and two ends of the screw rod (631) are respectively rotatably engaged with the side wall of the furnace body (10); the first motor is arranged outside the furnace body (10) and is drivingly connected to the screw rod (631); the nut seat (632) is threadedly engaged with the screw rod (631) and is connected to the first guide shaft (61); The fifth driving mechanism (64) comprises a second guide shaft (641), a second motor, a reel (642) and a pull rope (643); the second guide shaft (641) is arranged in parallel with the screw rod (631); the second guide shaft (641) is arranged in the furnace body (10); two ends of the second guide shaft (641) are respectively rotatably engaged with the side walls of the furnace body (10); the second motor is arranged outside the furnace body (10) and is transmission-connected to the second guide shaft (641); the reel (642) is slidably engaged with the second guide shaft (641) without relative rotation; one end of the pull rope (643) is connected to the material turning rake (62), and the other end of the pull rope (643) is wound around the reel (642); Two third limit blocks (633) are provided on the nut seat (632), and the third limit blocks (633) are provided with a clearance hole (634) for the second guide shaft (641) to pass through, and the two third limit blocks (633) are respectively abutted against two sides of the reel (642).

2. The hydrogen pulverization device for rare earth magnetic materials according to claim 1, characterized in that: The barrel cover mechanism (30) comprises: a cover plate (31) slidably fitted on the outer side wall of the material barrel (20) and capable of covering the first material opening (21); the cover plate (31) is provided with a second material opening (311), and the second material opening (311) can be aligned with the first material opening (21); Two groups of elastic components (32) are used to apply elastic resistance to the cover plate (31) so that the cover plate (31) covers the first material opening (21); the two groups of elastic components (32) are respectively arranged at two ends of the material barrel (20); the elastic components (32) include a first support (321), a second support (322) and an elastic member (323); the first support (321) is arranged on the cover plate (31); the second support (322) is arranged on an end cover of the material barrel (20); and the elastic member (323) is respectively connected to the first support (321) and the second support (322); and The third driving mechanism (33) is used to push the cover plate (31) to move when the material barrel (20) is in the feeding position or the discharging position, so as to align the second material opening (311) with the first material opening (21).

3. The hydrogen pulverization device for rare earth magnetic materials according to claim 2, characterized in that: The third driving mechanism (33) comprises a first push rod (331), a second push rod (332), a first telescopic driving member and a second telescopic driving member, the first push rod (331) and the second push rod (332) are both movably arranged on the furnace body (10) and extend into the furnace body (10), the first push rod (331) and the second push rod (332) are respectively arranged on both sides of the material barrel (20); the first telescopic driving member and the second telescopic driving member are both arranged outside the furnace body (10), the first telescopic driving member is used to drive the first push rod (331) to perform a telescopic action, and the second telescopic driving member is used to drive the second push rod (332) to perform a telescopic action; When the material barrel (20) is in the feeding position, the first push rod (331) can push the cover plate (31) to move; when the material barrel (20) is in the discharging position, the second push rod (332) can push the cover plate (31) to move.

4. The hydrogen pulverization device for rare earth magnetic materials according to claim 2, characterized in that: The two end covers of the material barrel (20) are respectively provided with a limiting seat (23), and a limiting groove (231) is provided on one side of the limiting seat (23) facing the other limiting seat (23), and the cover plate (31) is slidably fitted in the two limiting grooves (231); two groups of limiting parts are provided on the cover plate (31), each group of limiting parts corresponds to one limiting seat (23), and the limiting parts include a first limiting block (312) and a second limiting block (313); When the cover plate (31) covers the first material opening (21), the first limit block (312) abuts against the limit seat (23); when the second material opening (311) is aligned with the first material opening (21), the second limit block (313) abuts against the limit seat (23).

5. The hydrogen pulverization device for rare earth magnetic materials according to claim 4, characterized in that: Two of the first material openings (21) and two of the second material openings (311) are provided, and the two first material openings (21) extend along the length direction of the material barrel (20); A conical material guide portion (24) is provided inside the material barrel (20), the conical material guide portion (24) is provided between the two first material openings (21), the conical material guide portion (24) is provided with two first material guide inclined surfaces (241), and the inner side wall of the material barrel (20) is provided with two second material guide inclined surfaces (25), and each of the first material guide inclined surfaces (241) and each of the second material guide inclined surfaces (25) corresponds to one of the first material openings (21).

6. The hydrogen pulverization device for rare earth magnetic materials according to claim 1, characterized in that: It also includes a discharge chamber (70), the furnace body (10) is arranged above the discharge chamber (70), the second drive mechanism (42) is arranged in the discharge chamber (70), and the furnace door body (41) and the material receiving trough (50) can be lowered into the discharge chamber (70).

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