Method and device for recycling aluminum skimmings and crushed aluminum materials

Abstract

The invention relates to the technical field of aluminum scrap recovery, in particular to a method and device for recovering aluminum skimmings and crushed aluminum materials. The method comprises the following steps that S1, aluminum fragments are stored in a recycling box; s2, conveying the aluminum fragments into a melting furnace, and melting the aluminum fragments into molten aluminum; s3, in the working process of the melting furnace, infrared imaging pictures are obtained every set time, the controller carries out processing according to the infrared imaging pictures, and the areas occupied by the aluminum disintegrating slag in the first area, the second area, the third area and the fourth area are obtained; s4, a first area threshold value and a second area threshold value are set, and the area occupied by the aluminum disintegrating slag in the first area, the area occupied by the aluminum disintegrating slag in the second area, the area occupied by the aluminum disintegrating slag in the third area and the area occupied by the aluminum disintegrating slag in the fourth area are compared with the first area threshold value and the second area threshold value correspondingly; the movement of the pressing plate and the staying time of the pressing plate stretching into the aluminum water surface are controlled according to conditions; and it is guaranteed that aluminum skimmings and crushed aluminum materials with the small size are normally molten.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum waste recycling, and in particular to a method and device for recycling aluminum chips and aluminum scraps. Background Art

[0002] When aluminum castings are cut, the chips produced account for about 20%-30% of the mass of the aluminum castings. Therefore, recycling and reusing aluminum chips can greatly reduce production costs and have good economic benefits. The aluminum chip recycling and regeneration process is one of the focus issues of major companies and the domestic aluminum industry.

[0003] Prior art CN111014038B discloses a device for recycling aluminum scraps, aluminum foil, and aluminum scraps, comprising a housing, the back of which is connected to an L-shaped mounting block. A second motor is mounted on the L-shaped mounting block. The output end of the second motor is connected to a fourth rotating rod via a coupling. The fourth rotating rod is connected to a first gear. The first rotating rod is rotatably connected to the first rotating rod via a first bearing. The second motor, first gear, second gear, first rotating rod, connecting rod, scraper, curved plate, and blower are configured. The rotation of the second motor drives the rotation of the first gear. Because the first gear is a residual gear, each rotation of the first gear drives a half-turn of the second gear. This results in the scraper's output state being intermittent. When the scraper reaches its highest position, it stops, causing the material on the scraper to fall. This, in conjunction with the blower, separates the aluminum foil from the aluminum scraps.

[0004] At present, the general recycling of aluminum chips and aluminum scraps is to melt the aluminum chips and aluminum scraps into aluminum liquid. However, when the screened aluminum chips and aluminum scraps are added to the melting furnace for melting, the smaller aluminum chips and aluminum scraps will float on the surface of the aluminum liquid in the melting furnace, resulting in abnormal melting and affecting the recycling efficiency.

[0005] Therefore, there is an urgent need to provide a method and device for recycling aluminum chips and aluminum scraps, which, compared with the existing technology, can melt smaller aluminum chips and aluminum scraps normally and improve the recycling efficiency. Summary of the Invention

[0006] The present invention solves the technical problems existing in the prior art and provides a method and device for recycling aluminum chips and aluminum scraps.

[0007] To achieve the above object, the technical solution adopted by the present invention is as follows: The lower end of the recycling box is connected to the upper end of the conveyor belt through a recycling pipe, and the lower end of the conveyor belt is connected to the feeding port of the melting furnace through a transmission pipe. The melting furnace comprises a furnace body, a stirring shaft is arranged in the furnace body, the upper end of the stirring shaft is connected to a first motor, the lower end of the stirring shaft is provided with a stirring blade, and the upper end of the stirring shaft is provided with a plurality of infrared imagers. The top of the furnace body is movably connected to an electric push rod, and the lower end of the electric push rod is fixedly connected to a pressing plate; the controller is electrically connected to the infrared imager and the electric push rod respectively; aluminum liquid is placed in the melting furnace, and the upper surface of the aluminum liquid in the melting furnace is set as the aluminum liquid surface, and the aluminum liquid surface includes a first area, a second area, a third area and a fourth area. The infrared imager is used to take a picture of the aluminum liquid surface to obtain an infrared imaging picture, and the electric push rod and the pressing plate are combined to press the aluminum scraps in the first area, the second area, the third area and the fourth area into the aluminum liquid surface.

[0008] Furthermore, a slide groove and a storage groove are provided at the top of the furnace body. The slide groove is annular and is located inside the feed port. A chain is provided in the slide groove and a gear is provided in the storage groove. The gear is rotated by connecting to a second motor. The gear is engaged with the chain, and the lower end of the chain is fixedly connected to the electric push rod through a slider.

[0009] Furthermore, the aluminum water surface is evenly divided into the first area, the second area, the third area and the fourth area, and the end of the pressure plate close to the stirring shaft and the end close to the inner wall of the furnace body are provided with rubber strips, and the horizontal cross-sectional area of the combination of the pressure plate and the rubber strip is the same as the area of the first area.

[0010] Furthermore, the initial position of the pressing plate is the third area, and the feed port is set corresponding to the first area.

[0011] Furthermore, the pressure plate is provided with a working direction and a reset direction. The working direction of the pressure plate is the direction of movement along the third area-second area-first area-fourth area, and the reset direction of the pressure plate is the direction of movement along the fourth area-first area-second area-third area.

[0012] A method for recycling aluminum chips and scraps, comprising the following steps: S1. Preliminary crushing of aluminum chips and aluminum scraps to obtain aluminum fragments, which are then stored in a recycling bin; S2. Open the recovery valve and the transfer valve to transfer the aluminum fragments into the melting furnace and melt the aluminum fragments into molten aluminum; S3. During operation of the melting furnace, at set intervals, two infrared imagers are used to photograph the aluminum molten surface, and infrared images are obtained by stitching. The controller processes the infrared images to obtain the area occupied by the aluminum slag in the first region, the area occupied by the aluminum slag in the second region, the area occupied by the aluminum slag in the third region, and the area occupied by the aluminum slag in the fourth region; S4. Setting a first area threshold and a second area threshold, comparing the area occupied by the aluminum debris in the first region, the area occupied by the aluminum debris in the second region, the area occupied by the aluminum debris in the third region, and the area occupied by the aluminum debris in the fourth region with the first area threshold and the second area threshold, respectively, and controlling the movement of the pressing plate and the residence time of the pressing plate in the aluminum water surface according to the situation; S5. At the same time as step S4, a third area threshold is also set, and the area occupied by the aluminum slag in the first area, the area occupied by the aluminum slag in the second area, the area occupied by the aluminum slag in the third area, and the area occupied by the aluminum slag in the fourth area are compared with the first area threshold, the second area threshold, and the third area threshold, respectively, and the opening of the recovery valve and the transmission valve are controlled according to the situation.

[0013] Furthermore, in step S4, the movement of the pressing plate and the dwell time of the pressing plate in the aluminum water surface are controlled according to different situations. The specific method is as follows: (1) When 、 、 、 Are less than or equal to When the pressing plate is controlled, the aluminum slag in the third area, the second area, the first area, and the fourth area are pressed into the aluminum water surface in the working direction. The residence time of each pressing plate is ; (2) When 、 、 、 At least one of them is greater than and less than When and less than The area is set as the priority area. There is at least one priority area and at most three. The area occupied by the aluminum slag in the priority area is sorted from large to small. The pressure plate is controlled to press the aluminum slag in the corresponding area into the aluminum water surface in the order of the area occupied by the aluminum slag in the priority area from large to small. The residence time of the pressure plate in the priority area is ; For less than or equal to The pressing plate presses the aluminum slag in the area closest to the last priority area along the working direction into the aluminum water surface. For the remaining areas, the pressing plate presses the aluminum slag into the aluminum water surface in sequence according to the principle of moving along the working direction first and then along the reset direction. The dwell time of each pressing plate is ; (3) When 、 、 、 All are greater than When the pressing plate is controlled, the aluminum slag in the third area, the second area, the first area, and the fourth area are pressed into the aluminum water surface in the working direction. The residence time of each pressing plate is ; Indicates the area occupied by aluminum slag in the first zone, Indicates the area occupied by aluminum slag in the second area, Indicates the area occupied by aluminum slag in the third zone, Indicates the area occupied by aluminum debris in the fourth zone; Indicates the first time, Indicates the second time, Indicates the third time; represents the first area threshold, Indicates the second area threshold.

[0014] Furthermore, 、 、 It is calculated by the following formula: ; ; ; In the above formula, Indicates the area occupied by aluminum slag in the priority area, j ranges from 1 to J, and J is 1, 2, or 3; It represents the average value of the area occupied by aluminum slag in the four regions.

[0015] Furthermore, in step S5, the opening of the recovery valve and the transmission valve is controlled according to different situations. The specific method is as follows: (1) When 、 、 、 Are less than or equal to When the opening of the recovery valve is controlled to be 80%-90%, the opening of the transmission valve is controlled to be 100%; (2) 、 、 、 Difference is made between any two of and less than ; or, when 、 、 、 The largest area is greater than or equal to and less than When: Control the opening of the recovery valve to 60%-40%, and control the opening of the transmission valve to 30%-40%; (3) 、 、 、 Difference is made between any two of and less than ,and 、 、 、 The largest area is equal to When: Control the opening of the recovery valve to 0% and the opening of the transmission valve to 10%-20%; (4) When 、 、 、 There are at least two areas equal to When the opening of the recovery valve and the transmission valve are controlled to be 0%.

[0016] Furthermore, 、 and The relationship is: ; ; in, Equal to one quarter of the area of the aluminum water surface.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention sets an infrared imager and a pressing plate in a melting furnace, uses the infrared imager to take pictures of the aluminum water surface at set intervals to obtain infrared imaging pictures, processes the infrared imaging pictures, obtains the areas occupied by the aluminum debris 37 in the first area, the second area, the third area, and the fourth area, compares the area occupied by the aluminum debris 37 in each area with the first area threshold, the second area threshold, and the third surface base threshold, accurately judges the movement of the pressing plate and the time the pressing plate stays in the aluminum water surface, and accurately controls the opening of the recovery valve and the transmission valve, so that the melting furnace can perform normal and rapid melting operations on the aluminum debris 37 floating on the aluminum water surface, avoids excessive floating of the aluminum debris 37 on the surface of the aluminum water surface, and causes adverse effects on the melting operation, which is conducive to improving the efficiency of the melting work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 2 It is a cross-sectional view of the melting furnace of the present invention along the vertical direction.

[0020] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0021] Figure 4 It is a cross-sectional view of the melting furnace of the present invention along the horizontal direction.

[0022] Description of reference numerals: 1. Recycling box; 11. Recycling discharge pipe; 12. Recycling valve; 2. Conveyor belt; 21. Conveying discharge pipe; 22. Conveying valve; 3. Melting furnace; 31. Furnace body; 32. Feeding port; 33. Discharging port; 34. First motor; 35. Stirring shaft; 36. Stirring blade; 37. Aluminum slag; 38. Aluminum liquid surface; 381. First area; 382. Second area; 383. Third area; 384. Fourth area; 39. Infrared imager; 310. Slide; 311. Electric push rod; 312. Press plate; 313. Rubber strip; 314. Chain; 315. Gear; 316. Second motor; 317. Fixed plate; 318. Storage trough. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be clearly described below in conjunction with the accompanying drawings. Obviously, the described embodiments are not all embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. It should be noted that the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", etc. is based on the orientation or position relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description. It does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

[0024] like Figure 1As shown, the present invention provides an aluminum chip and aluminum scrap recycling device, comprising a recycling box 1, a conveyor belt 2, a melting furnace 3 and a controller. The top of the recycling box 1 is opened. After the aluminum chips and aluminum scraps are preliminarily crushed, aluminum fragments are obtained, and the aluminum fragments are stored in the recycling box 1. The lower part of the recycling box 1 is connected to a recycling discharge pipe 11, and the recycling discharge pipe 11 is connected to the inside of the recycling box 1. A recycling valve 12 is connected in series to the recycling discharge pipe 11. The recycling valve 12 controls the on and off of the recycling discharge pipe 11. The lower end of the recycling discharge pipe 11 is connected to the upper end of the conveyor belt 2. The conveyor belt 2 uses a three-stage conveyor belt 2. The lower end of the conveyor belt 2 is connected to the transmission discharge pipe 21. The transmission valve 22 is connected in series to the transmission discharge pipe 21. The lower end of the transmission discharge pipe 21 is connected to the melting furnace 3.

[0025] like Figure 2 As shown, the melting furnace 3 includes a furnace body 31, a first motor 34, a stirring shaft 35 and stirring blades 36. The first motor 34 is fixedly connected to the center position of the upper end of the furnace body 31, and the output end of the first motor 34 is fixedly connected to the upper end of the stirring shaft 35. The stirring shaft 35 is arranged through the upper wall of the furnace body 31 and extends into the interior of the furnace body 31. A plurality of stirring blades 36 are fixedly connected to the circumference of the lower end of the stirring shaft 35. The stirring blades 36 are arranged near the bottom of the furnace body 31. A feeding port 32 is provided at the upper end of the furnace body 31, and the feeding port 32 is arranged near the peripheral wall of the furnace body 31. A discharge port 33 is provided at the center position of the lower end of the furnace body 31, and a discharge valve (not shown in the figure) is connected in series to the discharge port 33.

[0026] Figure 2 、 Figure 4 As shown, a plurality of infrared imagers 39 are provided in the melting furnace 3, preferably two of them. Both infrared imagers 39 are fixed to the upper end of the side wall of the stirring shaft 35, and the two infrared imagers 39 are spaced apart. Molten aluminum is stored in the melting furnace 3, and the upper surface of the aluminum liquid is set as the aluminum liquid surface 38. The infrared imagers 39 are used to photograph the aluminum liquid surface 38. One infrared imager 39 photographs half of the aluminum liquid surface 38, and the other infrared imager 39 photographs the other half of the aluminum liquid surface 38. When aluminum slag 37 floats on the aluminum liquid surface 38, the picture taken by the infrared imager 39 contains the aluminum slag 37 floating on the aluminum liquid surface 38. The aluminum slag 37 referred to is smaller aluminum fragments (aluminum fragments that cannot sink below the aluminum liquid surface 38 by their own gravity).

[0027] like Figure 2 、 Figure 3As shown, a slide groove 310 is provided on the top of the furnace body 31. The slide groove 310 is annular and is located on the inner side of the discharge port 33. A chain 314 is provided in the slide groove 310. A storage groove 318 is also provided on the top of the furnace body 31. A gear 315 is installed in the storage groove 318. The gear 315 is meshed with the chain 314. The lower end of the chain 314 is fixedly connected to the slider. The lower end of the slider is fixedly connected to the electric push rod 311. The lower end of the storage groove 318 is covered with a fixed plate 317. The fixed plate 317 is detachably connected to the upper wall of the furnace body 31 and can be detachable with screws. The position where the storage groove 318 is set is also fixed. Plate 317, the fixed plate 317 here covers the lower ends of the slide 310 and the storage groove 318 at the same time, the lower end of the fixed plate 317 is fixedly connected to the second motor 316, the output end of the second motor 316 passes through the fixed plate 317 and is fixedly connected to the gear 315, the second motor 316 drives the gear 315 to rotate, and a movable giveway groove for the slider is provided on the fixed plate 317, the giveway groove is a three-quarter ring, the lower end of the electric push rod 311 is fixedly connected to the pressing plate 312, the pressing plate 312 is a quarter fan-shaped, and the end of the pressing plate 312 close to the stirring shaft 35 and the end close to the inner wall of the furnace body 31 are provided with rubber strips 313.

[0028] The aluminum water surface 38 is evenly divided into four areas, namely the first area 381, the second area 382, the third area 383 and the fourth area 384 of the same shape and area. The shape of the horizontal cross-sectional area after the pressure plate 312 and the rubber strip 313 are combined is the same as the area of the first area 381. The initial position of the pressure plate 312 is located in the third area 383, and the feed port 32 is set corresponding to the first area 381; the second motor 316 drives the gear 315 to rotate, thereby realizing the gear 315 driving the chain 314 to transmit the electric push rod 31 1 drives the pressing plate 312 to reciprocate from the third area 383 to the fourth area 384, that is, the electric push rod 311 can only drive the pressing plate 312 to move in the direction from the third area 383 to the second area 382 to the first area 381 to the fourth area 384, which is the working direction, or from the fourth area 384 to the first area 381 to the second area 382 to the third area 383, which is the reset direction. The pressing plate 312 cannot directly reach the third area 383 from the fourth area 384.

[0029] The maximum distance that the electric push rod 311 drives the pressing plate 312 to move downward is located at the upper end of the stirring blade 36; the controller is electrically connected to the two infrared imagers 39, the first motor 34 and the second motor 316 respectively.

[0030] The present invention also provides a method for recycling aluminum chips and aluminum scraps, comprising the following steps: S1. Preliminary crushing of aluminum chips and aluminum scraps to obtain aluminum fragments, which are then stored in a recycling box 1.

[0031] S2. Open the recovery valve 12 and the transfer valve 22 to transfer the aluminum fragments into the melting furnace 3 and melt the aluminum fragments into molten aluminum.

[0032] S3. During the operation of the melting furnace 3, the two infrared imagers 39 are used to photograph the aluminum molten surface 38 at set intervals. The pictures taken by the two infrared imagers 39 are spliced to obtain an infrared imaging picture of the entire aluminum molten surface 38. When aluminum slag 37 exists on the aluminum molten surface 38, the infrared imaging picture includes an image of the aluminum slag 37. The controller processes the infrared imaging picture to obtain the areas occupied by the aluminum slag 37 in the first area 381, the second area 382, the third area 383, and the fourth area 384, respectively.

[0033] S4. Based on the area occupied by the aluminum slag 37 in the first region 381, the area occupied by the aluminum slag 37 in the second region 382, the area occupied by the aluminum slag 37 in the third region 383, and the area occupied by the aluminum slag 37 in the fourth region 384, the controller controls the movement of the pressing plate 312 and the residence time of the pressing plate 312 in the aluminum water surface 38. The specific control method is as follows: Set the first area threshold and the second area threshold. Both the first area threshold and the second area threshold are smaller than one-quarter of the area of the aluminum surface, and the first area threshold is smaller than the second area threshold. Set the first area threshold to , the second area threshold is The areas occupied by the aluminum debris 37 in the first region, the second region, the third region, and the fourth region are compared with the first area threshold and the second area threshold, respectively, and the movement of the pressing plate and the dwell time of the pressing plate in the aluminum water surface are controlled according to the following conditions: (1) When 、 、 、 Are less than or equal to When the controller controls the second motor, the pressing plate presses the aluminum slag 37 in the third area, the second area, the first area, and the fourth area into the aluminum water surface in the working direction. The residence time of each pressing plate is .

[0034] (2) When 、 、 、 At least one of them is greater than and less than When and less than The area is set as the priority area. There is at least one priority area and at most three priority areas. The areas occupied by the aluminum slag 37 in the priority areas are sorted from large to small. The controller controls the second motor to make the pressing plate press the aluminum slag 37 into the aluminum water surface in the order of the areas occupied by the aluminum slag 37 in the priority areas from large to small. The residence time of the pressing plate in the priority area is ; For less than or equal to For the area of the priority area, the pressing plate presses the aluminum slag 37 into the aluminum water surface in the area closest to the last priority area along the working direction. For the remaining areas, the pressing plate presses the aluminum slag 37 into the aluminum water surface in sequence according to the principle of moving along the working direction first and then along the reset direction. The dwell time of each pressing plate is .

[0035] (3) When 、 、 、 All are greater than When the controller controls the second motor, the pressing plate presses the aluminum slag 37 in the third area, the second area, the first area, and the fourth area into the aluminum water surface in the working direction. The residence time of each pressing plate is .

[0036] in, represents the area occupied by the aluminum debris 37 in the first region, represents the area occupied by the aluminum debris 37 in the second region, represents the area occupied by the aluminum debris 37 in the third region, The area occupied by the aluminum debris 37 in the fourth region is shown.

[0037] 、 、 It is calculated by the following formula: ; In the above formula, Indicates the first time, It represents the area occupied by the aluminum debris 37 in the i-th region, where i is 1, 2, 3 or 4.

[0038] ; Indicates the second time, It represents the area occupied by the aluminum debris 37 in the priority area, j ranges from 1 to J, and J can be 1, 2 or 3.

[0039] ; In the above formula, Indicates the third time, It represents the average value of the area occupied by the aluminum debris 37 in the four regions.

[0040] The pressing plate presses the aluminum slag 37 in each area into the aluminum water surface. The pressing plate is extended by an electric push rod, and the pressing plate drives the aluminum slag 37 in the area to be pressed into the aluminum water surface.

[0041] S5. The controller performs this step simultaneously with step S4. The controller controls the opening of the recovery valve and the transfer valve according to the area occupied by the aluminum slag 37 in the first region, the area occupied by the aluminum slag 37 in the second region, the area occupied by the aluminum slag 37 in the third region, and the area occupied by the aluminum slag 37 in the fourth region. The specific control method is as follows: A third area threshold is set, which is equal to one-quarter of the area of the aluminum water surface. The areas occupied by the aluminum debris 37 in the first region, the second region, the third region, and the fourth region are compared with the first, second, and third area thresholds, respectively. Analyses are conducted in the following situations: (1) When 、 、 、 Are less than or equal to When the recovery valve is opened, the opening degree of the recovery valve is controlled to be 80%-90%, and the opening degree of the transmission valve is controlled to be 100%.

[0042] (2) 、 、 、 Difference is made between any two of and less than ; or, when 、 、 、 The largest area is greater than or equal to and less than At this time, control the opening of the recovery valve to 60%-40%, and control the opening of the transmission valve to 30%-40%.

[0043] (3) 、 、 、 Difference is made between any two of and less than ,and 、 、 、 The largest area is equal to When: Control the opening of the recovery valve to 0% and the opening of the transmission valve to 10%-20%.

[0044] (4) When 、 、 、 There are at least two areas equal to When the opening of the recovery valve and the transmission valve are controlled to be 0%.

[0045] in, 、 and The relationship is: ; .

[0046] The present invention sets an infrared imager and a pressing plate in a melting furnace, uses the infrared imager to take pictures of the aluminum water surface at set intervals to obtain infrared imaging pictures, processes the infrared imaging pictures, obtains the areas occupied by the aluminum debris 37 in the first area, the second area, the third area, and the fourth area, compares the area occupied by the aluminum debris 37 in each area with the first area threshold, the second area threshold, and the third surface base threshold, accurately judges the movement of the pressing plate and the time the pressing plate stays in the aluminum water surface, and accurately controls the opening of the recovery valve and the transmission valve, so that the melting furnace can perform normal and rapid melting operations on the aluminum debris 37 floating on the aluminum water surface, avoids excessive floating of the aluminum debris 37 on the surface of the aluminum water surface, and causes adverse effects on the melting operation, which is conducive to improving the efficiency of the melting work.

[0047] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. A device for recovering aluminum chips and aluminum scraps, characterized in that: The invention comprises a recycling box, a conveyor belt, a melting furnace and a controller, wherein the lower end of the recycling box is connected to the upper end of the conveyor belt through a recycling pipe, and the lower end of the conveyor belt is connected to the feeding port of the melting furnace through a conveying pipe. The melting furnace comprises a furnace body, a stirring shaft is passed through the furnace body, the upper end of the stirring shaft is connected to a first motor, the lower end of the stirring shaft is provided with a stirring blade, and the upper end of the stirring shaft is provided with a plurality of infrared imagers. An electric push rod is movably connected to the top of the furnace body, and the lower end of the electric push rod is fixedly connected to a pressing plate; the controller is electrically connected to the infrared imager and the electric push rod respectively; aluminum liquid is placed in the melting furnace, and the upper surface of the aluminum liquid in the melting furnace is set as the aluminum liquid surface, and the aluminum liquid surface includes a first area, a second area, a third area and a fourth area. The infrared imager is used to take pictures of the aluminum liquid surface to obtain infrared imaging pictures, and the electric push rod and the pressing plate are combined to press the aluminum slag in the first area, the second area, the third area and the fourth area into the aluminum liquid surface.

2. The aluminum chips and aluminum scrap recovery device according to claim 1, characterized in that: A chute and a storage groove are provided on the top of the furnace body. The chute is annular and is located inside the feed port. A chain is provided in the chute and a gear is provided in the storage groove. The gear is rotated by connecting to a second motor. The gear is engaged with the chain, and the lower end of the chain is fixedly connected to the electric push rod through a slider.

3. The aluminum chips and aluminum scrap recovery device according to claim 1, characterized in that: The aluminum liquid surface is evenly divided into the first area, the second area, the third area and the fourth area. The end of the pressure plate close to the stirring shaft and the end close to the inner wall of the furnace body are both provided with rubber strips. The horizontal cross-sectional area of the combination of the pressure plate and the rubber strip is the same as the area of the first area.

4. The aluminum chips and aluminum scrap recovery device according to claim 2, characterized in that: The initial position of the pressing plate is the third area, and the feed port is set corresponding to the first area.

5. The aluminum chips and aluminum scrap recovery device according to claim 1, characterized in that: The pressing plate is provided with a working direction and a reset direction. The working direction of the pressing plate is the direction of movement along the third area-second area-first area-fourth area. The reset direction of the pressing plate is the direction of movement along the fourth area-first area-second area-third area.

6. A method for recycling aluminum chips and aluminum scraps, characterized in that: The method is carried out using an aluminum chip and aluminum scrap recovery device according to any one of claims 1 to 5, comprising the following steps: S1. Preliminary crushing of aluminum chips and aluminum scraps to obtain aluminum fragments, which are then stored in a recycling bin; S2. Open the recovery valve and the transfer valve to transfer the aluminum fragments into the melting furnace and melt the aluminum fragments into molten aluminum; S3. During operation of the melting furnace, at set intervals, two infrared imagers are used to photograph the aluminum molten surface, and infrared images are obtained by stitching. The controller processes the infrared images to obtain the area occupied by the aluminum slag in the first region, the area occupied by the aluminum slag in the second region, the area occupied by the aluminum slag in the third region, and the area occupied by the aluminum slag in the fourth region; S4. Setting a first area threshold and a second area threshold, comparing the area occupied by the aluminum debris in the first region, the area occupied by the aluminum debris in the second region, the area occupied by the aluminum debris in the third region, and the area occupied by the aluminum debris in the fourth region with the first area threshold and the second area threshold, respectively, and controlling the movement of the pressing plate and the residence time of the pressing plate in the aluminum water surface according to the situation; S5. At the same time as step S4, a third area threshold is also set, and the area occupied by the aluminum slag in the first area, the area occupied by the aluminum slag in the second area, the area occupied by the aluminum slag in the third area, and the area occupied by the aluminum slag in the fourth area are compared with the first area threshold, the second area threshold, and the third area threshold, respectively, and the opening of the recovery valve and the transmission valve are controlled according to the situation.

7. The aluminum chips and aluminum scrap recovery device according to claim 6, characterized in that: In step S4, the movement of the pressing plate and the dwell time of the pressing plate in the aluminum water surface are controlled according to different situations. The specific method is as follows: (1) When 、 、 、 Are less than or equal to When the pressing plate is controlled, the aluminum slag in the third area, the second area, the first area, and the fourth area are pressed into the aluminum water surface in the working direction. The residence time of each pressing plate is ; (2) When 、 、 、 At least one of them is greater than and less than When and less than The area is set as the priority area. There is at least one priority area and at most three. The area occupied by the aluminum slag in the priority area is sorted from large to small. The pressure plate is controlled to press the aluminum slag in the corresponding area into the aluminum water surface in the order of the area occupied by the aluminum slag in the priority area from large to small. The residence time of the pressure plate in the priority area is ; For less than or equal to The pressing plate presses the aluminum slag in the area closest to the last priority area along the working direction into the aluminum water surface. For the remaining areas, the pressing plate presses the aluminum slag into the aluminum water surface in sequence according to the principle of moving along the working direction first and then along the reset direction. The dwell time of each pressing plate is ; (3) When 、 、 、 All are greater than When the pressing plate is controlled, the aluminum slag in the third area, the second area, the first area, and the fourth area are pressed into the aluminum water surface in the working direction. The residence time of each pressing plate is ; Indicates the area occupied by aluminum slag in the first zone, Indicates the area occupied by aluminum slag in the second area, Indicates the area occupied by aluminum slag in the third zone, Indicates the area occupied by aluminum debris in the fourth zone; Indicates the first time, Indicates the second time, Indicates the third time; represents the first area threshold, Indicates the second area threshold.

8. The method for recycling aluminum chips and aluminum scraps according to claim 7, characterized in that: 、 、 It is calculated by the following formula: ； ； ； In the above formula, Indicates the area occupied by aluminum slag in the priority area, j ranges from 1 to J, and J is 1, 2, or 3; It represents the average value of the area occupied by aluminum slag in the four regions.

9. The method for recycling aluminum chips and aluminum scraps according to claim 7, characterized in that: In step S5, the opening of the recovery valve and the transmission valve is controlled according to the situation. The specific method is as follows: (1) When 、 、 、 Are less than or equal to When the opening of the recovery valve is controlled to be 80%-90%, the opening of the transmission valve is controlled to be 100%; (2) 、 、 、 Difference is made between any two of and less than ; or, when 、 、 、 The largest area is greater than or equal to and less than When: Control the opening of the recovery valve to 60%-40%, and control the opening of the transmission valve to 30%-40%; (3) 、 、 、 Difference is made between any two of and less than ,and 、 、 、 The largest area is equal to When: Control the opening of the recovery valve to 0% and the opening of the transmission valve to 10%-20%; (4) When 、 、 、 There are at least two areas equal to When the opening of the recovery valve and the transmission valve are controlled to be 0%.

10. The method for recycling aluminum chips and aluminum scraps according to claim 9, characterized in that: 、 and The relationship is: ； ； in, Equal to one quarter of the area of the aluminum water surface.

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