CN116336802A

CN116336802A - Waste aluminum product recovery device

Info

Publication number: CN116336802A
Application number: CN202310248840.9A
Authority: CN
Inventors: 王涛涛; 施海涛
Original assignee: Yangzhou Zhongzhiju Industrial Co ltd
Current assignee: Yangzhou Zhongzhiju Industrial Co ltd
Priority date: 2023-03-15
Filing date: 2023-03-15
Publication date: 2023-06-27

Abstract

The invention discloses a waste aluminum product recovery device, which comprises a melting furnace and an electromagnetic stirrer arranged below the melting furnace, wherein a round table-shaped shell is inserted into the middle of the melting furnace from the upper part, a conical auger main body is arranged in the round table-shaped shell, a hollowed-out cylinder is arranged below the round table-shaped shell, a dense exhaust hole is formed in the part of the round table-shaped shell, which is positioned in the melting furnace, a buffer air chamber is inserted above the melting furnace, the buffer air chamber is positioned outside the round table-shaped shell, and at least three heat recovery pipes are uniformly arranged between the upper part of the buffer air chamber and a feed hopper.

Description

Waste aluminum product recovery device

Technical Field

The invention relates to the technical field of waste aluminum recovery, in particular to a waste aluminum product recovery device.

Background

Aluminum is the most widely used metal among nonferrous metals, and has the advantages of light weight, strong durability, recyclability and the like, and the aluminum industry is a high energy consumption industry, so that the recycling of waste aluminum is particularly important.

The existing aluminum scraps are generally recovered by utilizing a permanent magnet stirrer, an electromagnetic pump, a mechanical pump or other devices to enable aluminum melt at an aluminum scraps feeding port of an aluminum melting furnace to generate vortex, and the aluminum scraps are put into the aluminum melt vortex and melted and taken away. However, when aluminum scraps are put into an aluminum melt, they float on the surface of the aluminum melt in the early stage, and when they come into contact with a high-temperature aluminum melt, they burn rapidly, so that burning loss of the aluminum scraps increases, and the yield is lowered.

The invention provides a scrap aluminum recovery system, wherein a material conveying pipe is arranged at a material feeding position of a smelting furnace, the lower end of the material conveying pipe is inserted into aluminum liquid, a material feeding opening is arranged at the upper end of the material conveying pipe, a mechanical driven longitudinal material feeding part is arranged in the material conveying pipe, when aluminum scraps are fed from the material feeding opening, the longitudinal material feeding part presses the fed aluminum scraps downwards through the material conveying pipe and extrudes the aluminum scraps from the bottom of the material conveying pipe, and the aluminum scraps are taken away by flowing aluminum liquid, so that the aluminum scraps are melted under the condition of not contacting air, so that the aluminum scraps are hardly combusted when melted, and the smelting real yield is improved; the aluminum scraps are directly pressed into the aluminum liquid layer, so that the aluminum liquid is not required to be formed into a vortex to turn over, and a vortex generation mechanical device is avoided.

However, the above device still has drawbacks: 1. the lower end of the conveying pipe is directly inserted into the vortex center of the aluminum liquid, and the waste aluminum pressed in from the upper part enters the aluminum liquid from the lower end of the conveying pipe, so that the discharging position is single, more waste aluminum exists at the instant position of the discharging position, and the waste aluminum cannot uniformly reach the inside of the aluminum liquid in the vertical height, so that the melting efficiency is reduced; 2. when the conveying pipe conveys waste aluminum downwards, external air is conveyed downwards, so that gas enters the aluminum liquid, bubbles are generated in the aluminum liquid, and the effect of a formed part of later-stage aluminum is affected.

Disclosure of Invention

The invention aims to provide a waste aluminum product recovery device, which solves the problems of uneven melting and bubble generation in aluminum liquid in the prior art.

In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a scrap aluminum product recovery unit, includes melting furnace and sets up the electromagnetic stirrer in melting furnace below, the middle part of melting furnace has inserted round platform shape shell from the top, the inside of round platform shape shell is equipped with the toper auger main part, the fretwork section of thick bamboo is installed to the below of round platform shape shell.

The part of the round table-shaped shell, which is positioned inside the melting furnace, is provided with dense exhaust holes, a buffer air chamber is inserted above the melting furnace, the buffer air chamber is positioned outside the round table-shaped shell, and at least three heat recovery pipes are uniformly arranged between the upper part of the buffer air chamber and the feed hopper.

Further, the below of feeder hopper is equipped with integrative toper fill, the lower extreme of toper fill and the upper end fixed communication of round platform shape shell, the inside crisscross baffle that is equipped with of feeder hopper, and offered intensive through-hole on the baffle, upwarp portion is installed to the inside one end of heat recovery pipe insertion feeder hopper.

Further, an installation groove is formed in one side, close to the inner wall of the feed hopper, of the baffle plate, a pin shaft is fixed in the installation groove, an installation seat is fixed on the inner wall of the feed hopper at a position corresponding to the installation groove, and a torsion spring is arranged between the pin shaft and the installation seat.

Further, the fretwork section of thick bamboo is including upper and lower ring side by side, and is equipped with the clearance between two adjacent rings, two adjacent be fixed with two at least connecting columns between the ring, and the guide plate of downward sloping is installed to the lateral surface of ring, the upper surface of guide plate is established to the upper shed, and the lower surface of guide plate is established to the lower shed.

Further, be equipped with the auger drive structure that can drive toper auger main part rotation above the buffer chamber, auger drive structure is including installing at the first motor of buffer chamber upper surface, fix the belt pulley and the belt that is used for driving two belt pulleys in first motor power take off end and toper auger main part upper end.

Further, the circular truncated cone-shaped shell is located the outside fixed ring that is fixed with of the position circumference of the inside top of buffer chamber, the outward appearance of fixed ring is installed through the bearing rotation and is installed the swivel ring, the surface top of swivel ring is fixed with the water conservancy diversion fan, inside one side of buffer chamber is equipped with the water conservancy diversion fan drive structure that can drive swivel ring pivoted.

Further, the flow guiding fan driving structure comprises a second motor arranged on one side in the buffer air chamber, a driving gear fixed at the power output end of the second motor and a driven gear fixed below the rotating ring, and the driving gear is meshed with the driven gear.

Further, the electromagnetic stirrer further comprises a base, and the electromagnetic stirrer is arranged above the base.

Further, a discharging pipe is arranged below one side of the melting furnace, and a stop valve is arranged on the discharging pipe.

Further, an inner container is arranged in the melting furnace, and a combustion chamber is arranged between the inner container and the melting furnace.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, the original integrated feeding cylinder is divided into the circular table-shaped shell and the hollow cylinder, so that when the aluminum scraps run downwards to reach the interior of the hollow cylinder, the aluminum scraps continuously move downwards in the interior of the hollow cylinder, and in the process of continuously moving downwards, part of the aluminum scraps are taken away by vortex, and the other part of the aluminum scraps continuously move downwards until reaching the lower part of the lowest circular ring for discharging, so that the aluminum scraps can uniformly reach the interior of the aluminum liquid in the height direction, and the melting uniformity of the aluminum scraps is ensured;

2. according to the invention, the guide disc is arranged, so that the waste aluminum taken away by the vortex can move along the guide disc, and the waste aluminum can be further ensured to uniformly reach the inside of the aluminum liquid in the height direction;

3. the lower side wall of the round table-shaped shell is provided with the vent hole, the buffer air chamber is inserted above the melting furnace, and then gas pressed down by the conical auger main body can reach the inside of the buffer air chamber through the vent hole, so that the condition that bubbles exist in the aluminum liquid caused by the fact that the gas reaches the inside of the aluminum liquid is avoided;

4. according to the invention, the heat recovery pipe is arranged between the buffer air chamber and the feeding hopper, and the temperature in the buffer air chamber is higher, so that the gases are in a heated state and become hot air flow, and the hot air flow can reach the inside of the feeding hopper through the heat recovery pipe to preheat initial aluminum scraps, so that the melting operation of the aluminum scraps after entering the inside of the liner can be promoted;

5. the invention is provided with the guide fan, and the guide fan can rapidly convey the gas exhausted from the exhaust hole to the inside of the heat recovery pipe, so that hot gas accumulation is avoided;

6. the invention installs the baffle plate which can shake in the feed hopper, and further prolongs the preheating time of the waste aluminum.

Drawings

FIG. 1 is an overall view of a scrap aluminum product recycling apparatus of the present invention;

FIG. 2 is a schematic view showing the internal structure of a scrap aluminum recycling apparatus according to the present invention;

FIG. 3 is a schematic view showing the inside of a buffer chamber in the scrap aluminum recycling apparatus according to the present invention;

FIG. 4 is a schematic view of the structure of a truncated cone-shaped housing in the scrap aluminum product recycling device;

FIG. 5 is a cross-sectional view of the frustoconical enclosure of FIG. 4 of a scrap aluminum article receptacle in accordance with the present invention;

FIG. 6 is a schematic view of the non-installed ring of FIG. 5 of a scrap aluminum product recycling apparatus according to the present invention;

FIG. 7 is a first view of the baffle plate of the scrap aluminum recycling apparatus in accordance with the present invention;

FIG. 8 is a second view of the baffle plate of the scrap aluminum recycling apparatus in accordance with the present invention;

FIG. 9 is a schematic view of the installation of baffles in a scrap aluminum recovery device in accordance with the present invention;

FIG. 10 is a schematic view of the structure of a baffle plate in the scrap aluminum recovery device of the present invention;

fig. 11 is a schematic structural view of an upturned portion and a heat recovery tube in the waste aluminum product recovery device.

In the figure: 1. a base; 2. an electromagnetic stirrer; 3. a melting furnace; 4. a discharge pipe; 5. a buffer air chamber; 6. a feed hopper; 61. a conical hopper; 7. a heat recovery tube; 71. an upturned part; 8. a deflector disc; 81. an upper opening; 82. a lower opening; 9. a circular truncated cone-shaped housing; 10. a conical auger body; 11. a screw driving structure; 111. a first motor; 112. a belt pulley; 113. a belt; 12. a guide fan driving structure; 121. a second motor; 122. a drive gear; 123. a driven gear; 13. an exhaust hole; 14. a guide fan; 15. a rotating ring; 16. a fixing ring; 17. a circular ring; 18. connecting the upright posts; 19. a pin shaft; 20. a baffle plate; 201. a mounting groove; 202. a through hole; 21. a mounting base; 22. a torsion spring; 23. an inner container; 24. a combustion chamber.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 and 2, the present invention provides a technical solution for a recovery device for waste aluminum products: the utility model provides a waste aluminum product recovery unit, including melting furnace 3, be equipped with inner bag 23 in melting furnace 3's inside, establish to combustion chamber 24 between inner bag 23 and the melting furnace 3, combustion gas, for example natural gas can be let in to combustion chamber 24 inside, it needs to set up the hole on melting furnace 3, and the pipeline of natural gas is installed in the hole position, in order to carry natural gas into the inside of combustion chamber 24, and still need be equipped with the ignition structure in combustion chamber 24, so that natural gas is lighted (the ignition technology of natural gas is very mature, it is not described in detail here to take care that the melting furnace offers the air current hole), the heat that produces after the natural gas burns can reach on the waste aluminum through inner bag 23, make the waste aluminum high temperature melt, be equipped with discharging pipe 4 in melting furnace 3's one side below, be equipped with the stop valve on the discharging pipe 4, and then, make discharging pipe 4 close by means of the stop effect of stop valve, when discharging is required, can realize through opening of stop valve.

As shown in fig. 1 and 2, a base 1 is provided below a melting furnace 3, an electromagnetic stirrer 2 is provided between the base 1 and the melting furnace 3, and when the electromagnetic stirrer 2 is operated, the aluminum melt in an inner container 23 can generate a vortex, and when aluminum scraps reach the vortex center position of the aluminum melt vortex, the aluminum scraps can be taken away by the aluminum solution.

In order to enable the aluminum scraps to accurately reach the vortex center position of the aluminum liquid vortex, and to avoid the aluminum scraps from floating on the upper surface of the aluminum liquid, a round table-shaped shell 9 is inserted from the upper part of the middle of the melting furnace 3, a conical auger main body 10 is arranged in the round table-shaped shell 9, and then the aluminum scraps can be gradually conveyed downwards in the rotating process of the conical auger main body 10, and the diameters of the conical auger main body 10 and the round table-shaped shell 9 are gradually reduced, so that the aluminum scraps can be slightly compressed in the downward moving process, the density (weight increase) of the compressed waste blocks is increased, and the aluminum scraps can be more rapidly taken away by the aluminum liquid.

As shown in fig. 4, in order to realize the rotation of the conical auger body 10, an auger driving structure 11 capable of driving the conical auger body 10 to rotate is arranged above the buffer air chamber 5, further, in this embodiment, the auger driving structure 11 comprises a first motor 111 installed on the upper surface of the buffer air chamber 5, a belt pulley 112 fixed on the power output end of the first motor 111 and the upper end of the conical auger body 10, and a belt 113 for driving the two belt pulleys 112, namely, the belt pulley 112 on the first motor 111 is rotated by the power driving action of the first motor 111, and the conical auger body 10 is rotated by the action of the belt pulley 112 and the belt 113 on the upper end of the conical auger body 10, so that the waste aluminum can be pushed downwards.

In order to further avoid the burning loss caused by the floating of the aluminum scraps on the aluminum liquid, and to make the aluminum scraps uniformly reach the vertical vortex center in the vertical direction, the lower end of the conical auger body 10 is extended downwards, the circular rings 17 which are arranged side by side up and down are arranged below the circular table-shaped shell 9, at least two connecting upright posts 18 are fixed between the two adjacent circular rings 17, the two circular rings 17 which are arranged side by side up and down are integrated together by virtue of the action of the connecting upright posts 18, a gap (the circular rings 17 which are arranged side by side up and down, the connecting upright posts 18 and the gap) is arranged between the two adjacent circular rings 17, the three forms a hollow cylinder body, and then after the aluminum scraps run downwards and are discharged from the lower end of the circular table-shaped shell 9, the hollow cylinder body continuously moves downwards, so that the aluminum scraps continuously move downwards in the vortex center, in the process of continuing downwards, part of the aluminum scraps can be carried away by the vortex (the aluminum scraps can pass through the gap to enter the aluminum liquid for melting), and the other part of the aluminum scraps continuously moves downwards until the aluminum scraps reaches the circular ring 17 to the inside the circular ring which is completely discharged from the lower part, so that the aluminum scraps continuously reaches the lower part of the circular ring 17 is discharged.

Further, as shown in fig. 3, 7 and 8, in order to ensure that each vortex is carried away from the gap between the two rings 17 and that this part of the aluminium scrap can be melted at the initial height of the carried away (in this way, in order to ensure that each level of the aluminium liquid can melt the aluminium scrap, the melting is uniform), a downwardly inclined baffle disc 8 is mounted on the outer side surface of the rings 17, so that the aluminium scrap carried away by the vortex can move along the baffle disc 8, ensuring that the melting is uniform, the upper surface of the baffle disc 8 is provided with an upper opening 81, and the lower surface of the baffle disc 8 is provided with a lower opening 82.

In actual operation, as shown in fig. 1, 2 and 3, since the conical auger body 10 presses the external gas into the waste aluminum together in the process of conveying the waste aluminum downward, a large amount of bubbles are formed in the aluminum liquid, which affects the formation of the aluminum liquid at a later stage, dense exhaust holes 13 are formed in the part of the conical auger body 9 located in the melting furnace 3, and further, in the process of conveying the waste aluminum downward by the conical auger body 10, a large amount of gas conveyed downward can be discharged outward through the exhaust holes 13, in order to discharge the gas discharged from the exhaust holes 13 from the melting furnace 3, a buffer air chamber 5 is inserted above the melting furnace 3, the buffer air chamber 5 is located outside the conical auger body 9, the gas discharged from the exhaust holes 13 can reach the inside of the buffer air chamber 5, and the gas is in a heated state due to the high temperature inside the buffer air chamber 5, at this time, at least three heat recovery pipes 7 are uniformly installed between the upper part of the buffer air chamber 5 and the feed hopper 6, and the inside of the feed hopper 6 can reach the inside of the feed hopper 6, and the waste aluminum can be preheated into the inside of the feed hopper 6, and the waste aluminum can be further heated into the feed hopper 23 when the waste aluminum is heated inside the feed hopper 23.

As shown in fig. 1 and 11, in the present embodiment, the end of the heat recovery tube 7 inserted into the feed hopper 6 should be provided with an upturned portion 71, which can convey the hot air flow upward to preheat more scrap aluminum, on the one hand, and can avoid the bubble phenomenon caused by the hot air flow flowing downward into the lower aluminum liquid.

As shown in fig. 2, 9 and 10, an integral conical hopper 61 is arranged below the feed hopper 6, the lower end of the conical hopper 61 is fixedly communicated with the upper end of the circular truncated cone-shaped shell 9, so that waste aluminum can reach the inside of the circular truncated cone-shaped shell 9, in order to prolong the time of the waste aluminum in the feed hopper 6 and strengthen the preheating effect of the waste aluminum, baffle plates 20 are arranged in the feed hopper 6 in a staggered manner, the waste aluminum entering the feed hopper 6 can run along the baffle plates 20, the time of the waste aluminum in the feed hopper 6 is prolonged, and in order to enable the hot air flow for heat recovery to reach any position in the feed hopper 6, dense through holes 202 are formed in the baffle plates 20, and then the recovered hot air flow can reach the waste aluminum to be preheated through the through holes 202.

In order to accelerate the hot air flow discharge, the air inside the circular truncated cone-shaped shell 9 can be rapidly discharged, a fixing ring 16 is fixed outside the circumference of the circular truncated cone-shaped shell 9, which is positioned above the inside of the buffer air chamber 5, a rotating ring 15 is rotatably mounted outside the fixing ring 16 through a bearing, a guide fan 14 is fixed above the outer surface of the rotating ring 15, a guide fan driving structure 12 capable of driving the rotating ring 15 to rotate is arranged on one side of the inside of the buffer air chamber 5, and the rotating ring 15 can drive the guide fan 14 to rotate under the action of the guide fan driving structure 12, so that the hot air inside the buffer air chamber 5 can be rapidly conveyed to the inside of the heat recovery tube 7 when the guide fan 14 rotates.

As shown in fig. 3, in the preferred embodiment, the driving structure 12 of the air guiding fan includes a second motor 121 installed at one side of the inside of the buffer air chamber 5, a driving gear 122 fixed at the power output end of the second motor 121, and a driven gear 123 fixed below the rotating ring 15, where the driving gear 122 is meshed with the driven gear 123, and the driving gear 122 can drive the driven gear 123 to rotate under the action of the second motor 121, so as to realize that the rotating ring 15 drives the air guiding fan 14 to rotate.

With continued reference to fig. 2, 9 and 10, in the above structure, the phenomenon that the scrap aluminum may be jammed on the baffle 20 may occur, in order to solve the problem, an installation groove 201 is provided on a side of the baffle 20 near the inner wall of the feed hopper 6, a pin 19 is fixed in the installation groove 201, an installation seat 21 is fixed on the inner wall of the feed hopper 6 at a position corresponding to the installation groove 201, a torsion spring 22 is provided between the pin 19 and the installation seat 21, the baffle 20 may be supported by the torsion spring 22 and the pin 19 to be in a state shown in fig. 9, when the scrap aluminum is located on the baffle 20, the baffle 20 may be pressed down (rotated by a certain angle along the pin 19) under the action of the weight of the scrap aluminum, and in addition, because the amount of the scrap aluminum above the baffle 20 is in a state of continuously changing during feeding, the state that the weight of the baffle 20 is continuously changing, the continuous shaking of the baffle 20 may be realized, and the situation that the scrap aluminum is jammed on the baffle 20 is avoided.

The working principle of the invention is as follows: when the device is used, aluminum scraps are fed from the inside of the feed hopper 6, can reach the inside of the round table-shaped shell 9 through the conical hopper 61, can be pushed downwards by the conical auger main body 10 under the action of the auger driving structure 11, and can be slightly compressed in the downward movement process because the diameters of the conical auger main body 10 and the round table-shaped shell 9 are gradually reduced, so that the density of the compressed aluminum scraps (the weight is increased, and aluminum liquid can further rapidly take away the waste scraps) is increased, the aluminum scraps downwards run to be discharged from the lower end of the round table-shaped shell 9, can reach the inside of a hollowed-out cylinder body formed by the round rings 17, the connecting upright posts 18 and the gaps which are arranged side by side up and down, continuously moves downwards along the inside of the hollowed-out cylinder body, so that it moves vertically downwards in the centre of the vortex and during its downwards movement a part of the aluminium scrap is carried away by the vortex (at this time it can pass through the gap and enter the interior of the aluminium liquid to melt) and can spread outwards along the deflector disc 8, thus ensuring that this part of aluminium scrap can be melted at the initial level of the carried away (so as to ensure that each level of aluminium liquid can melt aluminium scrap and make it melt uniformly), ensuring that it melts uniformly, while another part of aluminium scrap continues to move downwards until reaching the discharge from the underside of the lowermost ring 17, so that the whole process of aluminium scrap being involved in the interior of the aluminium liquid is completed and after the aluminium scrap has been melted, the discharge from the discharge pipe 4 can be carried out by opening the shut-off valve.

In the process that the waste aluminum is conveyed downwards by the conical auger main body 10, the conical auger main body 10 can downwards press external air together, the air can be discharged outwards through the exhaust hole 13 in the process that the conical auger main body 10 downwards compresses and conveys the waste aluminum to reach the inside of the buffer air chamber 5, the guide fan 14 is driven to rotate by the action of the guide fan driving structure 12, hot air in the buffer air chamber 5 can be conveyed to the inside of the heat recovery pipe 7 quickly when the guide fan 14 rotates, heat in the heat recovery pipe 7 can reach the inside of the feed hopper 6 to preheat the waste aluminum (one end of the heat recovery pipe 7, inserted into the inside of the feed hopper 6, is provided with the upwarping part 71, on one hand, hot air can be conveyed upwards to preheat more waste aluminum, on the other hand, the phenomenon that the hot air flows downwards to enter the inside of aluminum liquid below can be avoided, when the waste aluminum is continuously fed, the waste aluminum is heated by the baffle 20, the preheating time of the waste aluminum is prolonged, and the baffle 20 is subjected to the action of the weight of the waste aluminum, and the baffle 20 can be pressed downwards (rotated by a certain angle along the pin 19), and the baffle 20 is continuously in a state that the weight of the baffle 20 is continuously changed, and the baffle 20 is in a state that the state of being continuously broken, and the change of the weight of the baffle 20 is avoided.

Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.

Claims

1. The utility model provides a scrap aluminum product recovery unit, includes melting furnace (3) and sets up electromagnetic stirrer (2) in melting furnace (3) below, its characterized in that: the middle part of the melting furnace (3) is inserted with a round table-shaped shell (9) from the upper part, a conical auger main body (10) is arranged in the round table-shaped shell (9), and a hollow cylinder is arranged below the round table-shaped shell (9);

the part of the round table-shaped shell (9) positioned in the melting furnace (3) is provided with dense exhaust holes (13), a buffer air chamber (5) is inserted above the melting furnace (3), the buffer air chamber (5) is positioned outside the round table-shaped shell (9), and at least three heat recovery pipes (7) are uniformly arranged between the upper part of the buffer air chamber (5) and the feed hopper (6).

2. The scrap aluminum product recycling apparatus according to claim 1, wherein: the lower part of feeder hopper (6) is equipped with integrative toper fill (61), the lower extreme of toper fill (61) is fixed to be linked together with the upper end of round platform shape shell (9), the inside of feeder hopper (6) is crisscross to be equipped with baffle (20), and has seted up intensive through-hole (202) on baffle (20), upwarp portion (71) are installed to the inside one end of heat recovery pipe (7) insertion feeder hopper (6).

3. The scrap aluminum product recycling apparatus according to claim 2, wherein: one side of the baffle plate (20) close to the inner wall of the feed hopper (6) is provided with a mounting groove (201), a pin shaft (19) is fixed in the mounting groove (201), a mounting seat (21) is fixed on the inner wall of the feed hopper (6) at a position corresponding to the mounting groove (201), and a torsion spring (22) is arranged between the pin shaft (19) and the mounting seat (21).

4. The scrap aluminum product recycling apparatus according to claim 1, wherein: the hollow cylinder comprises rings (17) which are arranged side by side up and down, a gap is formed between every two adjacent rings (17), at least two connecting upright posts (18) are fixed between every two adjacent rings (17), a downward-inclined guide disc (8) is arranged on the outer side surface of each ring (17), an upper opening (81) is formed in the upper surface of each guide disc (8), and a lower opening (82) is formed in the lower surface of each guide disc (8).

5. The scrap aluminum product recycling apparatus according to claim 4, wherein: the screw conveyer driving structure (11) capable of driving the conical screw conveyer main body (10) to rotate is arranged above the buffer air chamber (5), and the screw conveyer driving structure (11) comprises a first motor (111) arranged on the upper surface of the buffer air chamber (5), a belt pulley (112) fixed at the power output end of the first motor (111) and the upper end of the conical screw conveyer main body (10) and a belt (113) used for driving the two belt pulleys (112).

6. The scrap aluminum product recycling apparatus according to claim 1, wherein: the circular truncated cone-shaped shell (9) is located at the periphery of the position above the inside of the buffer air chamber (5), a fixing ring (16) is fixed outside the circular truncated cone-shaped shell, a rotating ring (15) is rotatably installed outside the fixing ring (16) through a bearing, a guide fan (14) is fixed above the outer surface of the rotating ring (15), and a guide fan driving structure (12) capable of driving the rotating ring (15) to rotate is arranged on one side of the inside of the buffer air chamber (5).

7. The scrap aluminum product recycling apparatus in accordance with claim 6, wherein: the guide fan driving structure (12) comprises a second motor (121) arranged on one side inside the buffer air chamber (5), a driving gear (122) fixed at the power output end of the second motor (121) and a driven gear (123) fixed below the rotating ring (15), wherein the driving gear (122) is meshed with the driven gear (123).

8. The scrap aluminum product recycling apparatus according to claim 1, wherein: the electromagnetic stirrer is characterized by further comprising a base (1), and the electromagnetic stirrer (2) is arranged above the base (1).

9. The scrap aluminum product recycling apparatus according to claim 8, wherein: a discharging pipe (4) is arranged below one side of the melting furnace (3), and a stop valve is arranged on the discharging pipe (4).

10. The scrap aluminum product recycling apparatus according to any one of claims 1 to 8, wherein: an inner container (23) is arranged in the melting furnace (3), and a combustion chamber (24) is arranged between the inner container (23) and the melting furnace (3).