Aluminum alloy waste recycling and crushing device

Abstract

The present application discloses an aluminum alloy waste recycling and crushing device, which relates to the technical field of crushing devices, and includes: a casing, wherein the upper side of the casing is inclinedly structured with a feeding frame, and a material holding circular frame connected to the feeding frame is fixedly connected inside the casing; an extrusion crushing device, including a feeding frame fixedly connected to the top of the feeding frame, and two relatively rotating extrusion crushing wheels are rotatably installed inside the feeding frame; a hammer crushing device, including a main shaft that rotates through the casing and the material holding circular frame, and a hammer wheel located in the material holding circular frame is fixedly sleeved on the main shaft, and a screening mesh plate is installed at the bottom of the material holding circular frame. The present application firstly crushes the aluminum alloy waste by an extrusion crushing device, and then uses a hammer crushing device for secondary crushing, and hammers the plastic film on its surface to separate it, and finally uses a material separation component to achieve material separation without the need for additional screening equipment, thereby increasing the convenience of operation and reducing equipment costs.

Description

Technical Field

[0001] The present application relates to the field of crushing devices, and in particular to an aluminum alloy waste recycling and crushing device. Background Art

[0002] Aluminum alloy is the most widely used type of non-ferrous metal structural material in industry. Aluminum alloy has low density but relatively high strength, close to or exceeding that of high-quality steel, good plasticity, and can be processed into various profiles. It has excellent electrical conductivity, thermal conductivity and corrosion resistance. It is widely used in industry, and its usage is second only to steel. In order to reduce resource loss and protect the environment, waste aluminum alloy is generally recycled and can be used again after hot melt recasting.

[0003] In daily life, aluminum alloy is mostly used in doors and windows, and its surface is covered with a layer of plastic film. Before melting and casting, the aluminum alloy waste needs to be crushed to reduce the specifications of the aluminum alloy for subsequent melting operations. However, the existing aluminum alloy crushing devices mostly use a single crushing structure, which is unable to separate the plastic on the surface of the aluminum alloy. An additional screening equipment is required, which is more troublesome and increases the recycling cost.

[0004] The patent with the patent authorization announcement number CN117123346B discloses an adjustable alloy crushing device and crushing method, including: a housing and a first crushing assembly and a second crushing assembly with the same structure arranged in the housing, the first crushing assembly includes a crushing drum, a pushing assembly and a cutting assembly, a first driving assembly driving the crushing drum to rotate is arranged on the housing, the outer peripheral surface of the crushing drum is evenly spaced with first teeth, and a receiving groove is opened between two adjacent first teeth, a pad is arranged in the crushing drum, the pushing assembly is located below the crushing drum, and is used to push the alloy material in the receiving groove upward, and the cutting assembly uniformly cuts the alloy material pushed out; the adjustable alloy crushing device and crushing method of the present invention squeezes the alloy material into the receiving groove to form a long strip structure, which is convenient for the cutting assembly to cut it uniformly, which is conducive to controlling the particle size of the alloy particles and reducing the waste of the alloy material. The application has the following problems: it can only crush the aluminum alloy material, but cannot separate the plastic film attached to the surface of the material, and needs to be processed by an additional screening device before hot melt recasting can be performed, which is troublesome to operate and has a high processing cost.

[0005] Therefore, the present invention proposes an aluminum alloy waste recycling and crushing device. Summary of the invention

[0006] In order to solve the problems in the above-mentioned background technology, the present application provides an aluminum alloy waste recycling and crushing device.

[0007] The present application provides an aluminum alloy waste recycling and crushing device that adopts the following technical solution:

[0008] An aluminum alloy waste recycling and crushing device, comprising:

[0009] A casing, wherein a feeding frame is obliquely structured on the upper side of the casing, and a material-containing circular frame connected to the feeding frame is fixedly connected inside the casing;

[0010] The extrusion crushing device comprises a feeding frame fixedly connected to the top of the feeding frame, and two relatively rotating extrusion crushing wheels are rotatably installed in the feeding frame;

[0011] The hammer crushing device comprises a main shaft that rotates and penetrates the casing and the material-containing circular frame, a hammer wheel located in the material-containing circular frame is fixedly sleeved on the main shaft, and a screening mesh plate is installed at the bottom of the material-containing circular frame;

[0012] A material discharge piece is horizontally arranged in the casing and is located directly below the screening mesh plate;

[0013] The material distribution component includes an L-shaped material distribution pipe fixedly connected to the top of the material holding circular frame and located at the lower side of the material passing frame, one end of the L-shaped material distribution pipe is connected to the material holding circular frame at an angle downward and the other end is fixedly connected to a suction pipe fitting, the other end of the suction pipe fitting is connected to the lower side of the screening mesh plate, the side of the L-shaped material distribution pipe is fixedly connected to a discharge frame arranged at an angle downward, and a separation mesh plate located between the discharge frame and the suction pipe fitting is installed in the L-shaped material distribution pipe.

[0014] Furthermore, a plurality of material blocking blocks are installed on the top of the material holding circular frame and are arranged horizontally opposite to the lower port of the material passing frame. The material blocking blocks are configured with bevels at the corners facing the port of the material passing frame, and the screening mesh plate is arranged directly below the material blocking blocks.

[0015] In any of the above schemes, preferably, the casing includes a frame, both ends of the frame are configured with operation ports, both ends of the frame are hinged with sealing doors for closing the operation ports, and the movable end of the sealing door is detachably connected to the frame through a locking bolt.

[0016] In any of the above schemes, it is preferred that the unloading part includes two rotating shafts rotatably installed in a frame, one of the rotating shafts is connected to the main shaft through a pulley transmission, a conveyor belt arranged under the screening mesh plate is sleeved between the two rotating shafts, and the frame is constructed with a discharge port for the conveyor belt to pass through.

[0017] In any of the above schemes, preferably, the material discharge member also includes a storage hopper slidably inserted in the discharge port, one end of the storage hopper is located below the screening mesh plate and the other end is configured with a sealing plate for closing the discharge port.

[0018] In any of the above schemes, preferably, the L-shaped material distribution pipe includes an upper inclined tube that is connected to the material holding circular frame at an angle downward, and the inner bottom of the upper inclined tube is arranged with a plurality of convex strips in an array along its length direction, and the other end of the upper inclined tube is connected to a lower inclined tube, and a rotating material blocking member for blocking the aluminum material is installed between the upper inclined tube and the lower inclined tube.

[0019] In any of the above schemes, preferably, the rotating material blocking member includes a cylindrical frame fixedly connected to the connection between the upper inclined tube and the lower inclined tube, and a moving fan blade is rotatably installed in the cylindrical frame.

[0020] In any of the above schemes, it is preferred that a feed opening is constructed at the bottom of the circular frame, and the screening mesh plate includes an arc-shaped upper frame and an arc-shaped lower frame fixedly connected in the feed opening, a plurality of feed pipes are connected through the arc-shaped upper frame and the arc-shaped lower frame, the arc-shaped upper frame is made of wire mesh, and the arc-shaped lower frame is made of steel plate.

[0021] In any of the above schemes, it is preferred that the air suction pipe comprises a tube frame fixedly connected to the bottom end of the lower inclined tube, an exhaust fan blade is rotatably installed in the tube frame, the exhaust fan blade is connected to the main shaft through a pulley transmission, and an arc-shaped through pipe is fixedly connected to the bottom of the tube frame, and the other end of the arc-shaped through pipe passes through the material holding circular frame and is connected between the arc-shaped upper frame and the arc-shaped lower frame.

[0022] In any of the above schemes, it is preferred that the separation screen plate includes a mesh plate installed obliquely downward in a lower inclined tube, one side of the lower inclined tube is provided with a discharge port connected to the discharge frame, one end of the mesh plate passes through the discharge port and the end portion is provided with an arc-shaped baffle with an inner concave surface arranged toward the discharge port.

[0023] In summary, the present application includes at least one of the following beneficial technical effects of an aluminum alloy waste recycling and crushing device: the present application first performs preliminary crushing of the aluminum alloy waste through an extrusion crushing device to crush it into block materials, and then uses the hammer wheel in the hammer crushing device to quickly hit the material to generate heat and bend it inside, thereby further breaking the block aluminum alloy waste into particles, and the plastic film on its surface will be separated from the aluminum alloy due to the hitting, and finally, the suction pipe in the dividing assembly is used to form an annular airflow in the material holding circular frame and the L-shaped dividing pipe, so as to absorb and separate the lighter plastic sheets, without the need for subsequent use of additional screening equipment to separate the materials, and the crushing device is used to perform crushing and separation operations simultaneously, thereby increasing convenience and reducing equipment costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional structural diagram of this application;

[0025] Figure 2 It is a partial three-dimensional structural diagram of this application;

[0026] Figure 3 This application Figure 2 Half-section of the three-dimensional structure;

[0027] Figure 4 This is another three-dimensional structural diagram of the present application;

[0028] Figure 5 This application Figure 4 Half-section of the three-dimensional structure;

[0029] Figure 6 It is another partial three-dimensional structure diagram of the present application;

[0030] Figure 7 This application Figure 6 Half-section of the three-dimensional structure;

[0031] Figure 8 This is a half-section diagram of the three-dimensional structure of the material separation component of the present application;

[0032] Fig. 9 This is a three-dimensional structural diagram of the screening mesh plate of the present application;

[0033] Figure numerals: 1, casing; 101, feeding frame; 102, frame; 1021, discharge port; 103, operation port; 104, sealing door; 105, bolt; 2, material holding round frame; 201, material stop block; 2011, bevel; 202, discharge port; 3, extrusion crushing device; 301, feeding frame; 302, extrusion crushing wheel; 4, hammer crushing device; 401, main shaft; 402, hammer wheel; 403, screening mesh plate; 4031, arc upper frame; 4032, arc lower frame; 4033, discharge pipe; 5, discharge piece ; 501, rotating shaft; 502, conveyor belt; 503, storage hopper; 504, sealing plate; 6, material distribution assembly; 601, L-shaped material distribution pipe; 6011, upper inclined pipe; 6012, convex strip; 6013, lower inclined pipe; 60131, discharge port; 602, suction pipe fittings; 6021, pipe frame; 6022, exhaust fan blades; 6023, arc-shaped through pipe; 603, discharge frame; 604, separation mesh plate; 6041, mesh plate; 6042, arc-shaped baffle; 7, rotating material baffle; 701, cylindrical frame; 702, moving fan blades. DETAILED DESCRIPTION

[0034] In order to make the technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0035] In order to better understand the above technical solution, Figure 1-Figure 9 This application is described in further detail.

[0036] like Figure 1-Figure 6 As shown, an aluminum alloy waste recycling and crushing device proposed in one embodiment of the present application includes:

[0037] A casing 1, wherein a material passing frame 101 is arranged on an inclined upper side of the casing 1, and a material holding circular frame 2 which is in communication with the material passing frame 101 is fixedly connected to the casing 1;

[0038] The extrusion crushing device 3 comprises a feed frame 301 fixedly connected to the top of the feed frame 101, two relatively rotating extrusion crushing wheels 302 are rotatably installed in the feed frame 301, the feed frame 301 has the same inclination direction as the feed frame 101 and a funnel frame is constructed on the top thereof for receiving aluminum alloy waste, the extrusion crushing wheel 302 adopts the crushing wheel structure inside the existing crusher, the two crushing wheels realize synchronous reverse rotation through gear transmission, and thus can extrusion crush the material entering the feed frame 301, and the structure uses extrusion shear force to separate the material into larger block structures;

[0039] The hammer crushing device 4 includes a main shaft 401 that rotates and passes through the casing 1 and the material holding circular frame 2. A hammer wheel 402 located in the material holding circular frame 2 is fixedly sleeved on the main shaft 401. A screening mesh plate 403 is installed at the bottom of the material holding circular frame 2. It should be noted that the main shaft 401 is driven to rotate by a motor, and one end of the main shaft 401 is connected to a pulley, which can be used to connect with the extrusion crushing wheel 302. When the main shaft 401 rotates, it will drive the hammer wheel 402 to rotate at a high speed in the material holding circular frame 2, so that the pendulum on the hammer wheel 402 can quickly hit the fallen block aluminum alloy. When it contacts the aluminum alloy, on the one hand, it can tear the aluminum alloy and generate heat inside. On the other hand, it can use the heat generated inside the aluminum alloy to soften the plastic film on its surface, and use the striking force to separate the plastic film, so as to achieve further crushing of the aluminum alloy waste and also perform the film separation operation, so as to obtain purer aluminum alloy particles, which is convenient for subsequent melting processing;

[0040] The material discharge member 5 is horizontally arranged in the housing 1 and is located directly below the screening mesh plate 403, and is used to receive material particles;

[0041] The material distribution component 6 includes an L-shaped material distribution pipe 601 fixedly connected to the top of the material holding circular frame 2 and located at the lower side of the material passing frame 101. One end of the L-shaped material distribution pipe 601 is connected to the material holding circular frame 2 at an angle downward and the other end is fixedly connected to a suction pipe 602. The other end of the suction pipe 602 is connected to the lower side of the screening mesh plate 403. The side of the L-shaped material distribution pipe 601 is fixedly connected to a discharge frame 603 set at an angle downward. A device located between the discharge frame 603 and the suction pipe 602 is installed in the L-shaped material distribution pipe 601. The separation mesh plate 604 between the pipe fittings 602, the suction pipe fittings 602 in the structure as the power unit, can draw the airflow from the material holding circular frame 2 into the lower side of the screening mesh plate 403 through the L-shaped material distribution pipe 601, and then blow it back into the material holding circular frame 2 through the screening mesh plate 403, so as to form an annular circulating airflow in between, so as to carry the lighter plastic film into the L-shaped material distribution pipe 601, while the heavier aluminum alloy particles will still fall from the screening mesh plate 403. After the plastic film enters the L-shaped distribution pipe 601, it will be blocked by the separation mesh plate 604 and slide into the discharge frame 603. It should be noted that a gauze bag can be detachably mounted at the port of the discharge frame 603 to collect waste plastic. The circulating airflow can not only separate the plastic film, but also suck some of the smaller aluminum alloy particles after crushing into the L-shaped distribution pipe 601. These particles will directly enter the suction pipe 602 from the separation mesh plate 604 because of their weight greater than the plastic film, and then re-enter the material holding circular frame 2 from the screening mesh plate 403. When there are a large number of small aluminum alloy particles stored in the material holding circular frame 2, the hammer wheel 402 will hit the small particles and cause them to collide with each other on the surface of the large aluminum alloy material, thereby forming a shot blasting operation, which further facilitates the separation of the plastic film on the surface of the aluminum alloy and increases the purity of the crushed aluminum alloy material. No additional screening equipment is required, which increases the convenience of the device and saves equipment costs.

[0042] like Figure 3 and Figure 7 As shown, in some embodiments, a plurality of baffle blocks 201 are installed on the top of the material holding circular frame 2 and are arranged horizontally opposite to the lower port of the material passing frame 101. The baffle blocks 201 are configured with bevel angles 2011 at the corners facing the port of the material passing frame 101. The screening mesh plate 403 is arranged directly below the baffle blocks 201. Since the hammer wheel 402 rotates in a high-speed cycle in the material holding circular frame 2, it may drive the material back to the opening of the material passing frame 101 when it rotates, affecting the subsequent entry. The baffle blocks 201 can block this part of the refluxed material, causing collisions therebetween, thereby further accelerating the crushing efficiency. The bevel angle 2011 can facilitate the crushed particles to slide down, so that they can directly fall onto the screening mesh plate 403, facilitating the unloading of materials.

[0043] like Figure 1 - Figure 2As shown, in some embodiments, the housing 1 includes a frame 102, both ends of the frame 102 are constructed with operation ports 103, both ends of the frame 102 are hinged with sealing doors 104 for closing the operation ports 103, the movable end of the sealing door 104 is detachably connected to the frame 102 through a locking bolt 105, and the sealing doors 104 are arranged at both ends of the frame 102, which can facilitate personnel to operate and maintain the unloading part 5 and the discharge frame 603, thereby increasing the convenience of the device.

[0044] like Figure 1 - Figure 2 As shown, in some embodiments, the unloading member 5 includes two rotating shafts 501 rotatably installed in the frame 102, one of the rotating shafts 501 is connected to the main shaft 401 through a pulley transmission, and a conveyor belt 502 arranged below the screening mesh plate 403 is sleeved between the two rotating shafts 501, and a discharge port 1021 for the conveyor belt 502 to move through is constructed on the frame 102. The main shaft 401 and the pulley transmission are used to drive the rotating shaft 501 to rotate, so as to realize the continuous movement of the conveyor belt 502, and then continuously transport the crushed material, thereby increasing the convenience of the device, eliminating the need for additional power, and saving energy.

[0045] like Figure 4-Figure 5 As shown, in some embodiments, the unloading member 5 also includes a storage hopper 503 slidably inserted in the discharge port 1021, one end of the storage hopper 503 is located below the screening mesh plate 403 and the other end is constructed with a sealing plate 504 for closing the discharge port 1021. It should be noted that the device has two discharge states. One is the structure of the conveyor belt 502 when a large amount of material is processed, which can quickly unload the material. The other is the structure of the storage hopper 503 when a small amount of material is processed. When a certain amount of material is stored in the storage hopper 503, it is replaced and transported. The advantage of this is that dust leakage can be reduced. Compared with the open structure outlet of the traditional crushing device, the casing 1 in the present application is a closed structure as a whole, and the only remaining operating port 103 will also be blocked by the sealing door 104. The discharge port 1021 is sealed with the sealing plate 504 of the storage hopper 503 to reduce dust leakage and increase safety.

[0046] like Figure 6-Figure 8As shown, in some embodiments, the L-shaped material distribution pipe 601 includes an upper inclined tube 6011 that is connected to the material holding circular frame 2 at an angle downward. The upward inclined structure of the upper inclined tube 6011 can reduce the entry of large pieces of aluminum alloy materials and increase safety. A plurality of convex strips 6012 are arranged in an array along the length direction of the inner bottom of the upper inclined tube 6011. The other end of the upper inclined tube 6011 is connected to a lower inclined tube 6013. A rotating material blocking member 7 for blocking aluminum material is installed between the upper inclined tube 6011 and the lower inclined tube 6013. When the device is running, an annular circulating airflow is formed, and plastic film and dust will directly enter the lower inclined tube 6013 from the upper inclined tube 6011 with the airflow, and the convex strips 6012 are mainly used to retain a portion of small particles and dust so that they can enter the circulation, thereby forming a shot blasting operation in the material holding circular frame 2 and further improving the plastic film detachment effect.

[0047] like Figure 8 As shown, in some embodiments, the rotating material blocking member 7 includes a cylindrical frame 701 fixedly connected to the connection between the upper inclined tube 6011 and the lower inclined tube 6013, and a shifting fan blade 702 is rotatably installed in the cylindrical frame 701. The cylindrical frame 701 is provided to allow the airflow to be smoothly diverted to reduce energy loss. At the same time, the airflow will drive the shifting fan blade 702 to rotate. When the shifting fan blade 702 rotates, it will hit large pieces of aluminum alloy fragments that accidentally enter, causing them to slide back into the material holding circular frame 2, thereby preventing large pieces of aluminum alloy from entering with the plastic film and increasing safety. It should be noted that the convex strip 6012 is made of metal iron material with a smooth surface, which will not hinder the sliding of large pieces of aluminum alloy.

[0048] like Figure 7 and Fig. 9 As shown, in some embodiments, a feeding port 202 is configured at the bottom of the material holding circular frame 2, and the screening mesh plate 403 includes an arc-shaped upper frame 4031 and an arc-shaped lower frame 4032 fixedly connected in the feeding port 202, and a plurality of feeding pipes 4033 are connected through the arc-shaped upper frame 4031 and the arc-shaped lower frame 4032, and the arc-shaped upper frame 4031 is made of a steel wire mesh material, and the arc-shaped lower frame 4032 is made of a steel plate material. It should be noted that the arc-shaped upper frame 4031 and the arc-shaped lower frame 4032 are arranged in parallel up and down, and an arc-shaped space is configured therebetween. The cavity is used to communicate with the suction pipe 602. The arc-shaped lower frame 4032 is a closed structure and is connected with the material holding circular frame 2 only through the discharge pipe 4033 that penetrates the arc-shaped upper frame 4031. Therefore, when the suction pipe 602 is working, the airflow will flow toward the arc-shaped cavity and flow toward the material holding circular frame 2 at the mesh structure of the arc-shaped upper frame 4031. This part of the airflow will blow the plastic film that falls here upwards to prevent it from falling into the discharge pipe 4033 together with the aluminum alloy fragments, thereby ensuring the separation effect.

[0049] like Figure 7-Figure 8As shown, in some embodiments, the air suction duct 602 includes a tube frame 6021 fixedly connected to the bottom end of the lower inclined tube 6013, and an exhaust fan blade 6022 is rotatably installed in the tube frame 6021. The exhaust fan blade 6022 is connected to the main shaft 401 through a pulley transmission. An arc-shaped through-tube 6023 is fixedly connected to the bottom of the tube frame 6021, and the other end of the arc-shaped through-tube 6023 passes through the material holding circular frame 2 and is connected between the arc-shaped upper frame 4031 and the arc-shaped lower frame 4032. It should be noted that the exhaust fan blade 6022 includes a rotating rod rotatably installed in the tube frame 6021, and one end of the rotating rod is connected to the main shaft 401 through a pulley transmission, without the need for additional driving force, saving energy, and a plurality of arc-shaped long pieces are connected along the circumference of the rotating rod, which are used to move the airflow and particles falling into the tube frame 6021, so that the airflow and particles are accelerated to flow toward the arc-shaped upper frame 4031, reducing the risk of blockage.

[0050] like Figure 8 As shown, in some embodiments, the separation mesh plate 604 includes a mesh plate 6041 installed in a downwardly inclined lower tube 6013, a discharge port 60131 connected to the discharge frame 603 is configured on one side of the lower inclined tube 6013, one end of the mesh plate 6041 passes through the discharge port 60131 and an arc-shaped baffle 6042 with an inner concave surface facing the discharge port 60131 is configured on the end. It should be noted that when the aluminum alloy particles enter the lower inclined tube 6013 together with the plastic film, the particles with different weights will directly fall toward the inclined separation mesh plate 604 and roll on the separation mesh plate 604 to enter its mesh and fall into the suction pipe 602 below. The arc-shaped baffle 6042 provided on the separation mesh plate 604 is mainly used to block the aluminum alloy particles that accidentally fail to pass through the separation mesh plate 604, so that they can continue to fall at the arc-shaped baffle 6042, so as to ensure the separation effect. When the airflow contacts the separation mesh plate 604, it will produce a collision, thereby forming a part of the downward airflow and a part of the airflow along the inclined direction of the separation mesh plate 604. The plastic film will always move with the airflow due to its light weight. Therefore, when the plastic film contacts the inclined separation mesh plate 604, it will slide downward with this part of the airflow, and pass over the arc-shaped baffle 6042, thereby entering the discharge frame 603. Such a structure can effectively increase the separation effect and improve safety.

[0051] The above are only preferred embodiments of the present application and are not intended to limit the present application. Although the present application is described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A device for recycling and crushing aluminum alloy waste, It is characterized in that include: A casing (1), wherein a feeding frame (101) is tiltedly arranged on the upper side of the casing (1), and a material holding circular frame (2) connected to the feeding frame (101) is fixedly connected inside the casing (1); an extrusion crushing device (3), comprising a feeding frame (301) fixedly connected to the top of the feeding frame (101), and two relatively rotatable extrusion crushing wheels (302) are rotatably mounted inside the feeding frame (301); a hammer crushing device (4), comprising a main shaft (401) rotatably penetrating the casing (1) and the material holding circular frame (2), a hammer wheel (402) located in the material holding circular frame (2) is fixedly sleeved on the main shaft (401), and a screening mesh plate (403) is mounted on the bottom of the material holding circular frame (2); a material discharge member (5) horizontally penetrating the casing and arranged (1) and located directly below the screening mesh plate (403); a material distribution component (6), comprising an L-shaped material distribution pipe (601) fixedly connected to the top of the material holding circular frame (2) and located below the material passing frame (101); one end of the L-shaped material distribution pipe (601) is connected to the material holding circular frame (2) at an angle downward and the other end is fixedly connected to a suction pipe (602); the other end of the suction pipe (602) is connected to the below of the screening mesh plate (403); a side of the L-shaped material distribution pipe (601) is fixedly connected to a discharge frame (603) arranged at an angle downward; a separation mesh plate (604) is installed in the L-shaped material distribution pipe (601) and is located between the discharge frame (603) and the suction pipe (602); the separation mesh plate (604) comprises a downwardly inclined A mesh plate (6041) is installed in a lower inclined tube (6013), one side of the lower inclined tube (6013) is configured with a discharge port (60131) connected to a discharge frame (603), one end of the mesh plate (6041) passes through the discharge port (60131) and the end is configured with an arc-shaped baffle (6042) with an inner concave surface facing the discharge port (60131); a plurality of baffle blocks (201) are installed at the top of the inner part of the material holding circular frame (2) and are arranged horizontally opposite to the lower port of the material passing frame (101), the baffle blocks (201) are configured with an oblique angle (2011) at the corner facing the port of the material passing frame (101), and the screening mesh plate (403) is arranged directly below the baffle block (201); the casing (1) comprises a frame body (101); 2), both ends of the frame (102) are configured with operation ports (103), both ends of the frame (102) are hinged with sealing doors (104) for closing the operation ports (103), and the movable ends of the sealing doors (104) are detachably connected to the frame (102) via locking bolts (105); the unloading member (5) comprises two rotating shafts (501) rotatably mounted in the frame (102), one of the rotating shafts (501) is connected to the main shaft (401) via a pulley transmission, a conveyor belt (502) arranged below the screening mesh plate (403) is sleeved between the two rotating shafts (501), and the frame (102) is configured with a discharge port (1021) for the conveyor belt (502) to movably pass through;The material discharge member (5) further comprises a material storage hopper (503) slidably inserted into the material discharge port (1021), one end of the material storage hopper (503) being located below the screening mesh plate (403) and the other end of the material storage hopper being provided with a sealing plate (504) for closing the material discharge port (1021); the L-shaped material distribution pipe (601) comprises an upper inclined pipe (6011) which is connected to the material holding circular frame (2) in an inclined manner downward, and the inner bottom of the upper inclined pipe (6011) is provided with a plurality of convex strips ( 6012), the other end of the upper inclined tube (6011) is connected to the lower inclined tube (6013), and a rotating material blocking member (7) for blocking aluminum material is installed between the upper inclined tube (6011) and the lower inclined tube (6013); the rotating material blocking member (7) comprises a cylindrical frame (701) fixedly connected to the connection between the upper inclined tube (6011) and the lower inclined tube (6013), and a toggling fan blade (702) is rotatably installed in the cylindrical frame (701); the bottom of the material holding circular frame (2) is The upper structure of the screen mesh plate (403) is provided with a feed opening (202); the screening screen plate (403) comprises an arc-shaped upper frame (4031) and an arc-shaped lower frame (4032) fixedly connected in the feed opening (202); a plurality of feed pipes (4033) are connected through the arc-shaped upper frame (4031) and the arc-shaped lower frame (4032); the arc-shaped upper frame (4031) is made of a steel mesh material, and the arc-shaped lower frame (4032) is made of a steel plate; the air suction pipe (602) comprises a fixedly connected A tube frame (6021) is provided at the bottom end of the lower inclined tube (6013), wherein an exhaust fan blade (6022) is rotatably mounted in the tube frame (6021), wherein the exhaust fan blade (6022) is connected to the main shaft (401) via a belt pulley transmission, and an arc-shaped through pipe (6023) is fixedly connected to the bottom of the tube frame (6021), wherein the other end of the arc-shaped through pipe (6023) passes through the material holding circular frame (2) and is connected between the arc-shaped upper frame (4031) and the arc-shaped lower frame (4032). ;

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