CN112033156A - A high-efficiency sealed NdFeB magnet melting device - Google Patents

Abstract

The invention discloses a high-efficiency sealed NdFeB magnet smelting device, comprising a smelting furnace and a stirring device. The stirring device is arranged in the inner cavity of the smelting furnace; The impact piece is equipped with a fixed block, an L-shaped hanger rod and a connecting rod to set a toggle rod and a turbo fan at both ends of the connecting rod. When the flux enters the discharge pipe, the turbo fan rotates under the impact, and the arc is driven by the connecting rod. The shaped toggle lever rotates and presses on the outer wall of each impact piece between the side walls of the fixed ring, the movable block of the impact piece is pressed and then squeezes the connecting spring. After the toggle lever rotates away, the connecting spring resets, and the connecting spring pushes the movable block The impact rod on the outer wall stabs and oscillates the flux to prevent the flux from clogging in the discharge pipe and ensure the smoothness of the flux delivery.

Description

A high-efficiency sealed NdFeB magnet melting device

technical field

The invention relates to the technical field of smelting equipment, in particular to an efficient sealed NdFeB magnet smelting device.

Background technique

Neodymium magnets, also known as NdFeB magnets, are tetragonal crystals formed of neodymium, iron, and boron (Nd ₂ Fe ₁₄ B). In 1982, Makoto Sagawa of Sumitomo Special Metals discovered neodymium magnets. The magnetic energy product of this magnet was that of the samarium cobalt magnet, which was the largest magnetic energy product in the world at that time. Later, Sumitomo Special Metals successfully developed the powder metallurgy method, and General Motors successfully developed the rotary jet melting method, which can prepare NdFeB magnets. This type of magnet is the second most magnetic permanent magnet after absolute zero holmium magnet today, and it is also the most commonly used rare earth magnet. NdFeB magnets are widely used in electronic products, such as hard drives, mobile phones, headphones, and battery-powered tools.

Melting is one of the casting production processes. The metal materials and other auxiliary materials are put into the heating furnace to be melted and quenched and tempered. The materials in the high temperature (1300-1600K) furnace undergo certain physical and chemical changes, and the pyrometallurgical process of producing crude metal or metal enrichment and slag. , In addition to concentrate, calcine, sinter, etc., it is sometimes necessary to add a flux to make the charge easy to melt, and to add a reducing agent for a certain reaction. However, the existing NdFeB magnet smelting device is easy to block the feeding pipe channel when adding flux for metal material smelting, causing obstacles to the use of the equipment; and the stirring device inside the existing NdFeB magnet smelting device is too simple, and the surface When the materials are in two forms: solid material before melting and fluid state during melting, the stirring device inside the existing NdFeB magnet smelting device cannot fully stir the materials in different forms, which delays the melting efficiency of the NdFeB magnet.

Therefore, we have introduced an efficient sealed NdFeB magnet melting device.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a high-efficiency sealed NdFeB magnet smelting device. By arranging an oscillating mechanism between the inner walls of the discharge pipe, using a fixed ring to evenly set the impact piece, and using a fixed block and an L-shaped hanger to cooperate to connect The rod is provided with a toggle rod and a turbo fan at both ends of the connecting rod, and a stirring mesh plate is set inside the furnace body by using a coupling, a stirring shaft, a mounting ring, a horizontal bar, a mounting slot and a fixed clip to cooperate with the drive motor drive shaft. , and on the outer wall of the fixed clip, a material-removing plate is arranged through a bracket, a screw and a swivel, so as to solve the problems raised in the above-mentioned background.

In order to achieve the above purpose, the present invention provides the following technical solutions: an efficient sealed NdFeB magnet smelting device, including a smelting furnace and a stirring device, the stirring device is arranged in the inner cavity of the smelting furnace, and the smelting furnace includes a furnace body, a discharge Pipe, feed pipe, top cover, air guide pipe, exhaust fan, purification mechanism and drive motor, the bottom of the furnace body is provided with a discharge pipe, and the inlet end of the discharge pipe is provided with a discharge valve, and the feed pipe is set in the furnace The outer wall on one side of the furnace body is close to its top port, and the outer wall of the top port of the furnace body is provided with a top cover through fixing bolts. The air guide pipe, the end of the air guide pipe away from the top cover is connected with the upper end of the feed pipe, and the inlet end of the air guide pipe is provided with an exhaust fan, the purification mechanism is arranged on the outer wall of the top cover away from the exhaust fan, and the drive motor is installed by fixing bolts At the middle of the upper end of the top cover, and the drive shaft of the output end of the bottom of the drive motor penetrates the top cover and extends downward to the inside of the furnace body, and the end of the drive motor drive shaft inside the furnace body is fixedly connected to the stirring device;

The stirring device includes a coupling, a stirring shaft, a mounting ring, a horizontal bar, a mounting slot, a stirring mesh plate and a fixed clip. One end of the coupling is fixedly sleeved on the outer wall of the end of the drive motor drive shaft inside the furnace body, and The lower end of the coupling is fixedly sleeved with the stirring shaft, the outer wall of the stirring shaft is uniformly fixed and sleeved with mounting rings, and the two outer walls of the mounting ring are symmetrically arranged with integral horizontal bars, and the adjacent horizontal bars are adjacent to each other. There are corresponding installation card slots on one side of the outer wall, and the stirring net plate is clamped and fixed between the installation card slots on the outer walls of the adjacent horizontal bars. On the outer wall of the horizontal strip, and the stirring mesh plate is fixed.

Further, the furnace body includes a heat-conducting inner lining plate, a constant-temperature heating coil, a heat-insulating plate and an outer casing. A constant-temperature heating coil is evenly wound on the outer wall of the heat-conducting inner lining plate, and a heat-insulating plate is wrapped on the outer wall of the constant-temperature heating coil. A hollow layer is formed between the heat insulating plate and the heat-conducting inner lining plate, and an outer shell is attached to the outer wall of the heat insulating plate, and the heat insulating plate and the outer shell are fixedly connected by sticking and pressing.

Further, one end of the constant temperature heating coil penetrates through the heat insulation plate and the side wall of the outer casing and extends to the outside thereof, and the end is connected to a power supply, and the outer wall of the thermally conductive inner lining plate is provided with a metal film, and the metal film is 309S type stainless steel material fabricated components.

Further, the purification mechanism includes an installation cylinder, a communication pipe, a bamboo fiber filter cotton, activated carbon, a voltage stabilizing plate and an exhaust valve, the bottom of the installation cylinder is provided with a communication pipe, and the installation cylinder is communicated with the top cover through the communication pipe, and the installation cylinder is connected with the top cover. The bottom is covered with bamboo fiber filter cotton, the upper end of the bamboo fiber filter cotton is provided with activated carbon, the stabilizer plate is arranged on the inner wall of the installation cylinder on the top of the activated carbon to limit the activated carbon, and the stabilizer plate is evenly opened with ventilation holes and exhaust valves. It is arranged on the upper end of the end cover of the installation cylinder and communicates with the installation cylinder.

Further, an oscillation mechanism is arranged between the inner wall of the discharge pipe near one end of the furnace body, and the oscillation mechanism includes an impact piece, a fixing ring, a fixing block, an L-shaped hanger, a connecting rod, a toggle rod and a turbo fan. There are fixed rings respectively, the impact pieces are evenly distributed between the side walls of the fixed rings in a ring shape, and the impact pieces are fixedly sleeved on the inner wall of the discharge pipe close to one end of the furnace body through the fixed ring, and the fixed blocks are arranged on the outer walls of the upper and lower ends. The L-shaped hanger is fixedly connected to the side wall of the fixing ring of the impact piece close to one end of the furnace body, and a connecting rod is arranged through the side wall of the fixed block, the connecting rod is parallel to the discharge pipe, and the connecting rod is close to the impact piece. A toggle rod is fixedly sleeved on the outer wall of one end, and the turbo fan is fixedly sleeved on the outer wall of one end of the connecting rod away from the toggle rod, and is suspended in the inner cavity of the discharge pipe.

Further, the toggle rod is of an arc structure, the toggle rod extends to the inner side of the fixing ring, and the outer wall of the toggle rod is arranged to fit the outer wall of the impact piece.

Further, the impact piece includes a base, an installation groove, a connection spring, a movable block and an impact rod. The bases are evenly arranged between the side walls of the fixing ring, and are integrated with the fixing ring, and the base is away from the side of the discharge pipe. There are installation grooves on the outer wall of the installation groove, and the inner wall of the corresponding port side of the installation groove is evenly provided with connection springs, and the end of the connection springs close to the port of the installation groove is fixedly connected with a movable block, and the movable block is movably engaged between the inner walls of the installation groove, and The end of the movable block away from the connection spring extends to the outside of the port of the installation slot, and the outer walls of the movable block outside the port of the installation slot are respectively uniformly provided with impact rods.

Further, the drive motor is a forward and reverse asynchronous motor, the drive motor is connected to an external power supply, and its model is 5RK60GU-CF, and the drive motor is electrically connected to the microcomputer controller installed on the outer wall of one side of the furnace body through wires.

Further, brackets are fixedly connected to the edges of the upper and lower ends of the outer wall on one side of the fixing clip away from the horizontal bar, respectively. The bracket and the fixing clip form an integrated structure, and screws are respectively provided between the side walls of the non-fixed ends of the brackets. The outer wall of the swivel ring is respectively threadedly sleeved with a swivel ring, and the side walls of the swivel ring are respectively provided with an integrated material-removing plate at uniform intervals.

Compared with the prior art, the beneficial effects of the present invention are as follows:

1. A high-efficiency sealed NdFeB magnet smelting device proposed by the present invention, an oscillation mechanism is arranged between the inner walls of the discharge pipe, the impact piece is evenly arranged by the fixing ring, and the fixing block and the L-shaped suspension rod are used to cooperate with the connecting rod. A toggle rod and a turbo fan are respectively set at both ends of the connecting rod. When the flux enters the discharge pipe, the turbo fan rotates under the impact, and the connecting rod drives the arc-shaped toggle rod to the impact parts between the side walls of the fixed ring. Rotate and press on the outer wall, the movable block of the impact piece is pressed and then squeezes the connecting spring, the toggle lever rotates away and the connecting spring resets, and the connecting spring pushes the impact rod on the outer wall of the movable block to stab the flux and oscillate to prevent the flux from oscillating. Blockage occurs in the discharge pipe to ensure the smoothness of flux delivery.

2. A high-efficiency sealed NdFeB magnet smelting device proposed by the present invention uses couplings, stirring shafts, mounting rings, horizontal bars, mounting slots and fixed clips inside the furnace body to cooperate with the drive motor drive shaft. Stir the mesh plate, and set up the feeding plate on the outer wall of the fixed clip through the bracket, the screw and the swivel ring. When the material is not melted, the stirring mesh plate is driven by the forward and reverse driving motor to rotate and stir the solid material. When the material is melted, the stirring mesh plate still has the ability to stir the fluid material. At the same time, under the intermittent forward and reverse operation of the drive motor, the material transfer plate is impacted by the material and moves up and down on the outer wall of the screw through the rotating ring, driving the fluid material. The up and down tossing enhances the stirring effect on boredom and promotes the improvement of the smelting efficiency of NdFeB magnets.

3. An efficient sealed NdFeB magnet smelting device proposed by the present invention is provided with an air guide pipe on the outer wall of the top cover close to the side of the feed pipe, and the end of the air guide pipe away from the top cover is communicated with the upper end of the feed pipe, And the inlet end of the air duct is provided with an exhaust fan, which can guide the heat flow during melting inside the furnace body to the feed pipe, preheat the added NdFeB magnet raw materials and flux, and improve the utilization efficiency of heat energy and Speed up the smelting efficiency of the equipment.

Description of drawings

Fig. 1 is the smelting furnace structure schematic diagram of a kind of high-efficiency sealed NdFeB magnet smelting device of the present invention;

Fig. 2 is the partial sectional view of the melting furnace of the high-efficiency sealed NdFeB magnet melting device of the present invention;

3 is a partial cross-sectional view of the furnace body of the efficient sealed NdFeB magnet smelting device of the present invention;

4 is a sectional view of the purification mechanism of the highly efficient sealed NdFeB magnet smelting device of the present invention;

Fig. 5 is the sectional view of the discharge pipe of the high-efficiency sealed NdFeB magnet smelting device of the present invention;

FIG. 6 is a three-dimensional schematic diagram of the impact member of the high-efficiency sealed NdFeB magnet smelting device of the present invention;

Fig. 7 is the sectional view of the impact part of the high-efficiency sealed NdFeB magnet smelting device of the present invention;

8 is a schematic structural diagram of a stirring device of an efficient sealed NdFeB magnet smelting device of the present invention;

9 is an exploded view of the stirring device of the high-efficiency sealed NdFeB magnet smelting device of the present invention.

In the figure: 1. Smelting furnace; 11. Furnace body; 111. Thermal conductive lining plate; 112. Constant temperature heating coil; 113. Heat insulation plate; 114. Outer shell; Feeding pipe; 14. Top cover; 15. Air duct; 16. Exhaust fan; 17. Purification mechanism; 171. Installation cylinder; 172. Connecting pipe; 173. Bamboo fiber filter cotton; ; 176, exhaust valve; 18, drive motor; 19, oscillation mechanism; 191, impact piece; 1911, base; 1912, installation groove; 1913, connecting spring; 1914, movable block; 1915, impact rod; 192, fixing ring ; 193, fixed block; 194, L-shaped boom; 195, connecting rod; 196, toggle rod; 197, turbo fan; 110, microcomputer controller; 2, stirring device; 21, coupling; 22, stirring shaft 23, installation ring; 24, horizontal bar; 25, installation slot; 26, stirring mesh plate; 27, fixed clip; 28, bracket; 29, screw; 210, swivel;

Detailed ways

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. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Please refer to Fig. 1-2, an efficient sealed NdFeB magnet smelting device includes a smelting furnace 1 and a stirring device 2. The stirring device 2 is arranged in the inner cavity of the smelting furnace 1. The smelting furnace 1 includes a furnace body 11, an outlet Feed pipe 12, feed pipe 13, top cover 14, air guide pipe 15, exhaust fan 16, purification mechanism 17 and drive motor 18, the bottom of the furnace body 11 is provided with a discharge pipe 12, and the inlet end of the discharge pipe 12 is provided with There is a discharge valve, the feeding pipe 13 is arranged on the outer wall of the furnace body 11 near its top port, and the outer wall of the top port of the furnace body 11 is provided with a top cover 14 through fixing bolts, and the top cover 14 is opposite to the top of the furnace body 11. The port is sealed, the outer wall of the top cover 14 close to the feeding pipe 13 is provided with an air conduit 15, and the end of the air conduit 15 away from the top cover 14 is communicated with the upper end of the feeding pipe 13, and the inlet end of the air conduit 15 is provided with a The exhaust fan 16 can be used to guide the heat flow during smelting inside the furnace body 11 to the feed pipe 13, preheat the added NdFeB magnet raw materials and flux, improve the utilization efficiency of thermal energy and speed up the smelting of the equipment Efficiency, the purification mechanism 17 is arranged on the outer wall of the top cover 14 away from the exhaust fan 16, the drive motor 18 is installed at the middle of the upper end of the top cover 14 through fixing bolts, and the drive shaft of the output end of the bottom of the drive motor 18 penetrates the top cover 14 and Extending down to the inside of the furnace body 11, the drive motor 18 is a forward and reverse asynchronous motor, the drive motor 18 is connected to an external power supply, and its model is 5RK60GU-CF, and the drive motor 18 is connected to the outer wall of the furnace body 11 through wires. The microcomputer controller 110 is electrically connected, and the end of the drive shaft of the drive motor 18 inside the furnace body 11 is fixedly connected to the stirring device 2 .

Please refer to FIG. 3 , an efficient sealed NdFeB magnet smelting device. The furnace body 11 includes a thermally conductive inner lining plate 111 , a constant temperature heating coil 112 , a heat insulation plate 113 and an outer casing 114 . The constant temperature heating coil 112 is evenly wound, and the outer wall of the constant temperature heating coil 112 is wrapped with a heat insulating plate 113 , a hollow layer is formed between the heat insulating plate 113 and the thermally conductive inner lining plate 111 , and the outer wall of the heat insulating plate 113 is attached and arranged There is an outer casing 114, the heat insulating plate 113 and the outer casing 114 are fixedly connected by adhesive bonding, one end of the constant temperature heating coil 112 penetrates the heat insulating plate 113 and the side wall of the outer casing 114 and extends to the outside thereof, and the end is connected to an external power supply , a metal film 115 is provided on the outer wall of the thermally conductive lining plate 111, and the metal film 115 is a member made of a 309S type stainless steel material, and the metal film 115 made of a 309S type stainless steel material is resistant to high temperature and has a high surface smoothness. It is convenient to avoid the phenomenon of material hanging on the inner wall of the furnace body 11 when smelting materials, and at the same time, it can effectively protect the thermally conductive lining plate 111 to avoid damage to the thermally conductive lining plate 111 affecting the use of the equipment and prolong the service life of the equipment.

Please refer to FIG. 2 and FIG. 4 , a high-efficiency sealed NdFeB magnet smelting device. The purification mechanism 17 includes an installation cylinder 171, a communication pipe 172, a bamboo fiber filter cotton 173, an activated carbon 174, a pressure stabilization plate 175 and an exhaust valve. 176, the bottom of the installation cylinder 171 is provided with a communication pipe 172, and the installation cylinder 171 communicates with the top cover 14 through the communication pipe 172, the bottom of the installation cylinder 171 is laid with bamboo fiber filter cotton 173, and the upper end of the bamboo fiber filter cotton 173 is provided with Activated carbon 174, a pressure-stabilizing plate 175 is arranged between the inner walls of the installation cylinder 171 on the top of the activated carbon 174 to limit the activated carbon 174, and the pressure-stabilizing plate 175 is evenly provided with ventilation holes, and the exhaust valve 176 is arranged on the upper end of the end cover of the installation cylinder 171 and The installation cylinder 171 is communicated, and the gas generated during the smelting is filtered and purified through the installation cylinder 171, the bamboo fiber filter cotton 173 and the activated carbon 174 arranged at the bottom, so as to prevent the toxic and harmful gases from escaping to the outside and polluting the environment.

Please refer to FIGS. 5-7 , an efficient sealed NdFeB magnet smelting device. An oscillation mechanism 19 is provided between the inner wall of the discharge pipe 12 near one end of the furnace body 11 . The oscillation mechanism 19 includes an impact piece 191 , a fixing ring 192 , The fixing block 193 , the L-shaped hanger 194 , the connecting rod 195 , the toggle rod 196 and the turbo fan 197 , the two ends of the impact piece 191 are respectively provided with fixing rings 192 , and the impact pieces 191 are uniformly distributed on the side wall of the fixing ring 192 in a ring shape. and the impact piece 191 is fixedly sleeved on the inner wall of the discharge pipe 12 close to one end of the furnace body 11 through the fixing ring 192, and the fixing block 193 is fixedly connected to the impact piece 191 close to the end of the impact piece 191 through the L-shaped hanger rods 194 arranged on the outer walls of the upper and lower ends. A connecting rod 195 is arranged on the side wall of the fixing ring 192 at one end of the furnace body 11 , and a connecting rod 195 is arranged through the side wall of the fixing block 193 . A toggle rod 196 is connected to the fixed sleeve. The toggle rod 196 has an arc-shaped structure. The toggle rod 196 extends to the inner side of the fixing ring 192 , and the outer wall of the toggle rod 196 is arranged in contact with the outer wall of the impact piece 191 . The toggle rod 196 The turbo fan 197 is fixedly sleeved on the outer wall of the end of the connecting rod 195 away from the toggle rod 196, and is suspended inside the discharge pipe 12. cavity.

The impact piece 191 includes a base 1911, an installation groove 1912, a connection spring 1913, a movable block 1914 and an impact rod 1915. The bases 1911 are evenly arranged between the side walls of the fixing ring 192, and are integrated with the fixing ring 192. The outer wall of the 1911 away from the discharge pipe 12 is provided with a mounting groove 1912. The inner wall of the mounting groove 1912 corresponding to the port side is evenly provided with a connecting spring 1913. The end of the connecting spring 1913 close to the port of the mounting groove 1912 is fixedly connected with a movable block 1914. , the movable block 1914 is movably engaged between the inner walls of the installation groove 1912, and the end of the movable block 1914 away from the connection spring 1913 extends to the outside of the port of the installation groove 1912, and the outer wall of the movable block 1914 outside the port of the installation groove 1912 is evenly provided with The impact rod 1915, when the flux enters the discharge pipe 12, the turbo fan 197 is impacted and rotated, and the arc-shaped toggle rod 196 is driven by the connecting rod 195 to rotate on the outer wall of each impact piece 191 between the side walls of the fixing ring 192. Press, the movable block 1914 of the impact piece 191 is pressed and then squeezes the connecting spring 1913. After the toggle lever 196 rotates away, the connecting spring 1913 resets. The connecting spring 1913 pushes the impact rod 1915 on the outer wall of the movable block 1914 to stab the flux and oscillate. , to prevent the flux from being blocked in the discharge pipe 12, and to ensure the smoothness of the flux delivery.

Please refer to FIGS. 8 and 9 , an efficient sealed NdFeB magnet smelting device. The stirring device 2 includes a coupling 21, a stirring shaft 22, an installation ring 23, a horizontal bar 24, an installation slot 25, and a stirring mesh disk. 26 and the fixed clamp 27, one end of the coupling 21 is fixedly sleeved on the outer wall of the end of the drive shaft of the drive motor 18 inside the furnace body 11, and the lower end of the coupling 21 is fixedly sleeved with the stirring shaft 22. Mounting rings 23 are uniformly fixed and sleeved on the outer wall, and integral horizontal bars 24 are symmetrically arranged on the outer walls of the two sides of the mounting ring 23 respectively. Install the card slot 25, the stirring mesh plate 26 is snapped and fixed between the installation card slots 25 on the outer wall of the adjacent horizontal bars 24, and the fixing clip 27 is installed on the outer wall of the horizontal bar 24 at the port of the installation card slot 25 by fixing screws. , and the stirring mesh plate 26 is fixed, and the brackets 28 are respectively fixedly connected to the upper and lower ends of the outer wall on the side of the fixed clip 27 away from the horizontal bar 24. The bracket 28 and the fixed clip 27 form an integrated structure, and the bracket 28 Screws 29 are respectively arranged between the side walls of the non-fixed ends, the outer walls of the screws 29 are respectively threaded and sleeved with swivel rings 210, and the side walls of the swivel rings 210 are respectively provided with an integrated feeding plate 211 at uniform intervals, and the material is not melted When the stirring mesh disk 26 is driven by the forward and reverse driving motor 18, the solid material is rotated and stirred. When the material is melted, the stirring mesh disk 26 still has the ability to stir the fluid material. Under the reverse operation, the feeding plate 211 is impacted by the material and moves up and down on the outer wall of the screw 29 through the swivel ring 210, which drives the fluid material to churn up and down, strengthens the stirring effect of boring, and promotes the improvement of the melting efficiency of NdFeB magnets.

To sum up, a high-efficiency sealed NdFeB magnet smelting device proposed by the present invention is provided with an oscillating mechanism 19 between the inner walls of the discharge pipe 12 , the impact member 191 is evenly arranged by the fixing ring 192 , and the fixing block 193 is used. , L-shaped hanger 194 cooperates with connecting rod 195 to set a toggle rod 196 and a turbo fan 197 at both ends of the connecting rod 195. When the flux enters the discharge pipe 12, the turbo fan 197 is impacted and rotated, and is driven by the connecting rod 195. The arc-shaped toggle lever 196 rotates and presses on the outer walls of each impact piece 191 between the side walls of the fixing ring 192 , the movable block 1914 of the impact piece 191 is pressed and then squeezes the connecting spring 1913 , and the toggle lever 196 rotates away and then connects The spring 1913 is reset, and the connecting spring 1913 pushes the impact rod 1915 on the outer wall of the movable block 1914 to stab the flux and oscillate to prevent the flux from being blocked in the discharge pipe 12, so as to ensure the smoothness of the flux delivery; the coupling is used inside the furnace body 11. The device 21, the stirring shaft 22, the mounting ring 23, the horizontal bar 24, the mounting slot 25 and the fixed clip 27 cooperate with the drive motor 18 to set the stirring mesh plate 26, and the outer wall of the fixed clip 27 passes through the brackets 28, The screw 29 cooperates with the swivel ring 210 to set the material-removing plate 211. When the material is not melted, the stirring mesh disc 26 is driven by the forward and reverse driving motor 18 to rotate and stir the solid material. When the material is melted, the stirring mesh disc 26 is still in the fluid state. At the same time, under the intermittent forward and reverse operation of the drive motor 18, the feeding plate 211 is impacted by the material and moves up and down on the outer wall of the screw 29 through the swivel ring 210, driving the fluid material to tumbling up and down, strengthening the The boring stirring effect promotes the improvement of the smelting efficiency of NdFeB magnets; an air duct 15 is provided on the outer wall of the top cover 14 close to the side of the feeding pipe 13, and the end of the air duct 15 away from the top cover 14 is communicated with the upper end of the feeding pipe 13 , and the inlet end of the air guide pipe 15 is provided with an exhaust fan 16, and the exhaust fan 16 can be used to guide the heat flow during melting inside the furnace body 11 to the feed pipe 13, to preheat the added NdFeB magnet raw materials and flux, Improve the utilization efficiency of thermal energy and speed up the melting efficiency of equipment.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, and substitutions can be made in these embodiments without departing from the principle and spirit of the invention and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (9)

1. an efficient sealed NdFeB magnet smelting device, comprising a smelting furnace (1) and a stirring device (2), and the stirring device (2) is arranged in the inner cavity of the smelting furnace (1), it is characterized in that: the smelting furnace (1) Including a furnace body (11), a discharge pipe (12), a feed pipe (13), a top cover (14), an air duct (15), an exhaust fan (16), a purification mechanism (17) and a drive motor (18), the bottom of the furnace body (11) is provided with a discharge pipe (12), and the inlet end of the discharge pipe (12) is provided with a discharge valve, and the feed pipe (13) is provided on the first side of the furnace body (11). On the outer wall of the side near its top port, a top cover (14) is provided on the outer wall of the top port of the furnace body (11) through fixing bolts, and the top cover (14) seals the top port of the furnace body (11), and the top cover ( 14) An air duct (15) is provided on the outer wall of the side close to the feeding pipe (13), and the end of the air duct (15) away from the top cover (14) is communicated with the upper end of the feeding pipe (13), and the air duct ( The inlet end of 15) is provided with an exhaust fan (16), the purification mechanism (17) is arranged on the outer wall of the top cover (14) away from the side of the exhaust fan (16), and the drive motor (18) is installed on the top cover (18) through fixing bolts. 14) in the middle of the upper end, and the drive shaft of the bottom output end of the drive motor (18) penetrates the top cover (14) and extends downward to the interior of the furnace body (11), and the drive motor (18) inside the furnace body (11) The end of the transmission shaft is fixedly connected to the stirring device (2); The stirring device (2) comprises a coupling (21), a stirring shaft (22), a mounting ring (23), a horizontal bar (24), a mounting slot (25), a stirring mesh plate (26) and a fixing clip (27) ), one end of the coupling (21) is fixedly sleeved on the outer wall of the drive shaft end of the drive motor (18) inside the furnace body (11), and the lower end of the coupling (21) is fixedly sleeved with the stirring shaft (22) , the outer walls of the stirring shaft (22) are respectively uniformly sleeved with mounting rings (23), and integral horizontal bars (24) are symmetrically arranged on the outer walls of both sides of the mounting ring (23). 24) A corresponding installation slot (25) is respectively opened on the outer wall of the adjacent side, and the stirring mesh plate (26) is snapped and fixed to the installation slot (25) on the outer wall of the adjacent horizontal bars (24). During this time, the fixing clip (27) is installed on the outer wall of the horizontal bar (24) at the port of the installation slot (25) through the fixing screw, and fixes the stirring mesh plate (26). 2. A high-efficiency sealed NdFeB magnet smelting device according to claim 1, characterized in that: the furnace body (11) comprises a thermally conductive lining plate (111), a constant temperature heating coil (112), a heat insulation plate (113) and an outer casing (114), a constant temperature heating coil (112) is evenly wound on the outer wall of the thermally conductive inner lining plate (111), and an insulating plate (113) is wrapped on the outer wall of the constant temperature heating coil (112), A hollow layer is formed between the heat insulating plate (113) and the heat-conducting inner lining plate (111), and an outer casing (114) is fitted on the outer wall of the heat insulating plate (113), and the heat insulating plate (113) and the outer casing (114) ) are fixedly connected by sticking and pressing. 3. A high-efficiency sealed NdFeB magnet smelting device as claimed in claim 2, characterized in that: one end of the constant temperature heating coil (112) penetrates through the heat insulation plate (113) and the side wall of the outer casing (114) The outer wall of the thermally conductive lining plate (111) is provided with a metal film (115), and the metal film (115) is a member made of 309S stainless steel material. 4. a kind of high-efficiency sealed NdFeB magnet smelting device as claimed in claim 1 is characterized in that: purification mechanism (17) comprises installation cylinder (171), communication pipe (172), bamboo fiber filter cotton (173) ), activated carbon (174), stabilizer plate (175) and exhaust valve (176), the bottom of the installation cylinder (171) is provided with a communication pipe (172), and the installation cylinder (171) communicates with the top through the communication pipe (172). The cover (14) is communicated with each other, the bottom of the installation cylinder (171) is laid with bamboo fiber filter cotton (173), the upper end of the bamboo fiber filter cotton (173) is provided with activated carbon (174), and the voltage stabilization plate (175) is provided on the activated carbon (175). 174) The activated carbon (174) is limited between the inner walls of the installation cylinder (171) at the top, and the pressure stabilization plate (175) is evenly provided with ventilation holes, and the exhaust valve (176) is arranged on the upper end of the end cover of the installation cylinder (171). And communicate with the installation cylinder (171). 5. A high-efficiency sealed NdFeB magnet smelting device as claimed in claim 1, characterized in that: an oscillation mechanism (19) is provided between the inner walls of the discharge pipe (12) near one end of the furnace body (11), The oscillating mechanism (19) includes an impact piece (191), a fixing ring (192), a fixing block (193), an L-shaped boom (194), a connecting rod (195), a toggle lever (196) and a turbo fan (197) , the two ends of the impact piece (191) are respectively provided with a fixing ring (192), the impact piece (191) is evenly distributed between the side walls of the fixing ring (192) in a ring shape, and the impact piece (191) passes through the fixing ring (192) The fixing block (193) is fixedly connected to the impact piece (191) close to the impact piece (191) through the L-shaped hanger rods (194) arranged on the outer walls of the upper and lower ends. A connecting rod (195) is arranged on the side wall of the fixing ring (192) at one end of the furnace body (11), and a connecting rod (195) is arranged through the side wall of the fixing block (193), and the connecting rod (195) is parallel to the discharge pipe (12), And a toggle rod (196) is fixedly sleeved on the outer wall of one end of the connecting rod (195) close to the impact piece (191), and the turbo fan (197) is fixedly sleeved on the end of the connecting rod (195) away from the toggle rod (196). on the outer wall and suspended in the inner cavity of the discharge pipe (12). 6. A high-efficiency sealed NdFeB magnet smelting device according to claim 5, characterized in that: the toggle rod (196) is an arc structure, and the toggle rod (196) extends to the fixing ring (192) and the outer wall of the toggle lever (196) is arranged to fit the outer wall of the impact piece (191). 7. A high-efficiency sealed NdFeB magnet melting device according to claim 5, characterized in that: the impact piece (191) comprises a base (1911), an installation groove (1912), a connection spring (1913), a movable The block (1914), the impact rod (1915), the base (1911) are evenly arranged between the side walls of the fixing ring (192), and are integrated with the fixing ring (192), and the base (1911) is far away from the discharge A mounting groove (1912) is formed on the outer wall of one side of the tube (12), and connecting springs (1913) are evenly arranged on the inner wall of the side corresponding to the port of the mounting groove (1912), and the connecting spring (1913) is close to the port of the mounting groove (1912) A movable block (1914) is fixedly connected to one end of the movable block (1914), the movable block (1914) is movably engaged between the inner walls of the installation groove (1912), and the end of the movable block (1914) away from the connecting spring (1913) extends to the installation groove (1912) Impact rods (1915) are evenly arranged on the outer wall of the movable block (1914) outside the port of the installation slot (1912) and the outside of the port of the installation slot (1912). 8. a kind of high-efficiency sealed NdFeB magnet smelting device as claimed in claim 1 is characterized in that: the drive motor (18) is a forward and reverse asynchronous motor, and the drive motor (18) is an external power supply, and its model is 5RK60GU -CF, and the driving motor (18) is electrically connected with the microcomputer controller (110) installed on the outer wall of one side of the furnace body (11) through wires. 9. A kind of high-efficiency sealed NdFeB magnet smelting device as claimed in claim 1, characterized in that: the upper and lower end edges on the outer wall of the side bar (24) away from the fixing clip (27) are respectively fixed A bracket (28) is connected, and an integrated structure is formed between the bracket (28) and the fixing clip (27), and a screw (29) is respectively provided between the side walls of the non-fixed end of the bracket (28), and the outer wall of the screw (29) The swivel rings (210) are respectively threadedly sleeved, and the side walls of the swivel rings (210) are respectively provided with integral material-removing plates (211) at uniform intervals.

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