A sorting device for scrap steel

Abstract

The present application relates to a sorting device for scrap steel, and relates to the technical field of sorting devices. The device comprises a first mounting platform, a first conveying portion, a material receiving assembly, and a sorting assembly. The first conveying portion comprises two first rollers located in the same horizontal plane and arranged with their axes parallel to each other, a first belt arranged between the two first rollers, a first driving member arranged on the first mounting platform and used to drive the first rollers to rotate, the first rollers being rotatably connected to the first mounting platform around their own axes, and the first belt being used to transport raw materials. The material receiving assembly is arranged at the discharge port of the first belt and is spaced apart from the first belt. The sorting assembly is used to transport non-metallic raw materials in the raw materials to the material receiving assembly, and is used to transport metallic raw materials in the raw materials below the first belt. The present application can improve the quality of smelted steel.

Description

Technical Field

[0001] The present application relates to the technical field of sorting devices, and in particular to a sorting device for scrap steel. Background Art

[0002] Scrap steel refers to the iron waste that does not become products during the production process of steel mills and the steel materials in scrapped equipment after use. Utilizing scrap steel resources is a measure to break through resource bottlenecks.

[0003] When recycling scrap steel resources, the scrap steel mixture is first crushed by a crusher. After the crushing is completed, the crushed mixture is evenly placed on a conveyor belt, so that the conveyor belt transports the mixture. During the transportation of the mixture, the non-metallic materials and iron-containing materials in the mixture are manually sorted, so that the conveyor belt transports the steel-containing materials to the conveyor belt discharge port, and the steel-containing materials are collected at the discharge port, and the collected steel-containing materials are melted into steel.

[0004] During the sorting process of the above-mentioned non-metallic materials, manual sorting is adopted, which makes the probability of non-metallic materials remaining in the mixture higher, and the steel-containing materials collected at the conveyor belt discharge port may contain more non-metallic impurities, resulting in low quality of the smelted steel. Summary of the Invention

[0005] In order to improve the quality of smelted steel, the present application provides a sorting device for scrap steel.

[0006] The present application provides a sorting device for scrap steel, which adopts the following technical solution:

[0007] A sorting device for scrap steel includes a first mounting platform, a first conveying part, a material receiving assembly, and a sorting assembly. The first conveying part includes two first rollers located in the same horizontal plane and with axes parallel to each other, a first belt arranged between the two first rollers, and a first driving member arranged on the first mounting platform and used to drive the first rollers to rotate. The first roller is rotatably connected to the first mounting platform around its own axis, and the first belt is used to transport raw materials; the material receiving assembly is arranged at the discharge port of the first belt and is spaced apart from the first belt; the sorting assembly is used to transport non-metallic raw materials in the raw materials to the material receiving assembly, and is used to transport metal raw materials in the raw materials to the bottom of the first belt.

[0008] By adopting the above technical solution, the mixed raw materials are placed at the discharge port of the first belt. Driven by the first driving member, the mixed raw materials move toward a position close to the discharge port of the first belt. When the mixed raw materials are located at the discharge port of the first belt, the sorting component transports the non-metallic raw materials with smaller weight to the receiving component. At the same time, the metal raw materials with larger weight fall below the first belt through the space between the receiving component and the first belt under the action of their own inertia and gravity, so that the metal raw materials in the mixed raw materials are separated from the separated metal raw materials, thereby reducing impurities in the raw materials and improving the quality of the smelted steel.

[0009] Optionally, the sorting component is arranged between the first belt and the material receiving component, and the sorting component includes an air inlet pipe vertically arranged at the discharge port of the first belt and connected to the first mounting platform, and a pump installed on the air inlet pipe; a distance is left between the air inlet pipe and the material receiving component in the horizontal direction; the material receiving component is located below the top surface of the first belt.

[0010] By adopting the above technical solution, when the first driving member is started, the pump is started, and the pump transports external gas from the bottom of the air inlet pipe to the top of the air inlet pipe, so that the flowing air blows the raw materials above the air inlet pipe upward, so that the non-metallic raw materials with smaller weight can move to the material receiving assembly under the action of the flowing air, its own gravity and inertia, and the flowing air has less effect on the metal raw materials with heavier weight, so that the metal raw materials with heavier weight fall below the non-metallic raw materials under the action of their own gravity and inertia, thereby realizing the separation of non-metallic raw materials and metal raw materials in the mixed raw materials.

[0011] Optionally, the material receiving assembly includes a horizontally arranged storage box, the top of which is an open structure; a second mounting platform is provided below the storage box, and the second mounting platform is fixedly connected to the storage box.

[0012] By adopting the above technical solution, non-metallic raw materials with relatively small weight enter the storage box under the action of upward air flow, their own inertia and their own gravity, thereby realizing the collection of non-metallic raw materials.

[0013] Optionally, a distance is left between the storage box and the second mounting platform; a second conveying part is arranged above the second mounting platform, the second conveying part includes two second rollers located in the same horizontal plane and with axes parallel to each other, a second belt arranged between the two second rollers, and a second driving member arranged on the second mounting platform and used to drive the second rollers to rotate, the second roller is rotatably connected to the second mounting platform around its own axis, and the second belt is used to receive metal raw materials; a sorting component is arranged above the second belt, the sorting component is used to detect the steel content of the metal raw materials on the second belt, and to distinguish between raw materials with a steel content exceeding a preset value and raw materials with a steel content not exceeding the preset value.

[0014] By adopting the above technical solution, the metal raw material falls downward to the second belt feed port, and under the drive of the second driving member, the second belt transports the metal raw material to the second belt discharge port. During the transportation of the metal raw material, the sorting component detects the steel content of the raw material on the second belt, and distinguishes the raw material with a steel content exceeding the preset value from the raw material with a steel content not exceeding the preset value, thereby further improving the quality of the smelted steel.

[0015] Optionally, the sorting component includes an analyzer located above the second belt and connected to the storage box, a controller fixedly mounted on the analyzer, and a vertically arranged electric telescopic plate, wherein the analyzer is used to detect the steel content in the metal raw material and transmit a corresponding detection signal; the fixed end of the electric telescopic plate is fixedly connected to the storage box, and the movable end of the electric telescopic plate can abut against the top surface of the second belt; the controller is connected to the analyzer and the electric telescopic plate, and the controller responds to the detection signal and controls the working state of the electric telescopic plate.

[0016] By adopting the above technical solution, during the process of the second belt transporting the raw materials, the analyzer detects the steel content of the raw materials. When the detection result changes, the analyzer transmits the corresponding detection signal to the controller, and the controller controls the electric telescopic plate to extend so that the movable end of the electric telescopic plate extends downward. When the movable end of the electric telescopic plate abuts against the top surface of the second belt, the movable end of the electric telescopic plate is exactly located between the raw materials with a steel content exceeding the preset value and the raw materials with a steel content not exceeding the preset value. When the movable end of the electric telescopic plate abuts against the second belt for a preset time, the controller controls the electric telescopic plate to contract so that the movable end of the electric telescopic plate moves upward, and a distance is left between the raw materials with a steel content exceeding the preset value and the raw materials with a steel content not exceeding the preset value, so that the staff can distinguish and receive raw materials with different detection results.

[0017] Optionally, the material receiving assembly also includes a horizontally arranged cylinder, a first material receiving box fixedly connected to the movable end of the cylinder, and a second material receiving box fixedly arranged on the side of the first material receiving box away from the cylinder. The top of the first material receiving box and the top of the second material receiving box are both open structures, and the first material receiving box and the second material receiving box can both be located directly below the second belt discharge port; the fixed end of the cylinder is fixedly connected to the second mounting platform.

[0018] By adopting the above technical solution, the first material receiving box is used to receive qualified raw materials (steel content exceeds a preset value), and the second material receiving box is used to receive unqualified raw materials. When the qualified raw materials are transported to the second belt discharge port, the cylinder is started, and the movable end of the cylinder drives the first material receiving box to be located directly below the second belt discharge port, so that the qualified raw materials can enter the first material receiving box; when the unqualified raw materials are transported to the second belt discharge port, the cylinder is started, and the movable end of the cylinder drives the second material receiving box to be located directly below the second belt discharge port, so that the unqualified raw materials can enter the second material receiving box, thereby realizing the differentiated reception of qualified raw materials and unqualified raw materials.

[0019] Optionally, a buffer plate is provided on a side of the air inlet duct away from the first belt, and the buffer plate gradually approaches the analyzer from top to bottom.

[0020] By adopting the above technical solution, the heavier raw materials can slide on the buffer plate during the falling process, so that the falling speed of the raw materials is reduced, and the impact of the raw materials on the second belt is reduced, thereby protecting the second belt.

[0021] Optionally, the external cover of the analyzer is provided with a protection box, the bottom of the protection box is an open structure, and the protection box is fixedly connected to the storage box and the analyzer.

[0022] By adopting the above technical solution, the provision of the protection box can prevent the raw materials from coming into direct contact with the analyzer, thereby preventing the raw materials from hitting the analyzer during the falling process.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By providing a sorting assembly, a receiving assembly, and a first conveying section, the mixed raw materials are moved toward a position near the first belt outlet under the drive of the first driving member. When the mixed raw materials are at the first belt outlet, the sorting assembly transports the lighter non-metallic raw materials to the receiving assembly. At the same time, the heavier metal raw materials, under the action of their own inertia and gravity, pass through the space between the receiving assembly and the first belt and fall below the first belt. This separates the metal raw materials from the separated metal raw materials in the mixed raw materials, reduces impurities in the raw materials, and thus improves the quality of the smelted steel.

[0025] 2. By setting up a second conveying part and a sorting component, the metal raw material falls downward to the second belt feed port. Driven by the second driving member, the second belt transports the metal raw material to the second belt discharge port. During the transportation of the metal raw material, the sorting component detects the steel content of the raw material on the second belt, and distinguishes the raw material with a steel content exceeding the preset value from the raw material with a steel content not exceeding the preset value, thereby further improving the quality of the smelted steel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural diagram of an embodiment of the present application;

[0027] Figure 2 It is a cross-sectional view of an embodiment of the present application.

[0028] Description of reference numerals: 1, first mounting platform; 11, first mounting slot;

[0029] 2. Second mounting platform; 21. Second mounting slot; 22. Buffer plate;

[0030] 3. First conveying unit; 31. First belt; 32. First roller;

[0031] 4. Second conveying unit; 41. Second belt; 42. Second roller;

[0032] 5. Sorting components; 51. Air inlet pipe; 52. Pump;

[0033] 6. Sorting component; 61. Analyzer; 62. Controller; 63. Electric telescopic plate; 64. Protective box;

[0034] 7. Material receiving assembly; 71. Storage box; 72. Material receiving plate; 73. First material receiving box; 74. Second material receiving box; 75. Cylinder. DETAILED DESCRIPTION

[0035] The following is combined with Figure 1-2 This application is described in further detail.

[0036] The present application discloses a sorting device for scrap steel. Figure 1 and Figure 2 A sorting device for scrap steel includes a first mounting platform 1, a first conveying part 3, a material receiving component 7, and a sorting component 5. The first conveying part 3 is used to transport raw materials; the material receiving component 7 is used to receive non-metallic raw materials in the raw materials; the sorting component 5 is used to transport the non-metallic raw materials in the raw materials to the material receiving component 7, and is used to transport the metal raw materials in the raw materials to the bottom of the first conveying part 3.

[0037] When sorting the mixed raw materials of scrap steel, start the first conveyor part 3 and the sorting component 5, and then place the mixed raw materials at the feed port of the first conveyor part 3, so that the first conveyor part 3 transports the mixed raw materials to the discharge port of the first conveyor part 3. At this time, the sorting component 5 transports the non-metallic raw materials in the mixed raw materials at the discharge port of the first conveyor part 3 to the receiving component 7. At the same time, the metal raw materials in the mixed raw materials fall to the bottom of the first conveyor part 3 under the action of their own gravity and inertia, thereby realizing the separation of metal raw materials and non-metallic raw materials in the mixed raw materials.

[0038] Reference Figure 1 and Figure 2, a first mounting groove 11 is opened on the top surface of the first mounting platform 1, the length direction of the first mounting groove 11 is the same as the width direction of the first mounting platform 1, and the first mounting groove 11 passes through the first mounting platform 1 along its own length direction; the first conveying part 3 includes two first rollers 32, a first belt 31, and a first driving member, wherein the two first rollers 32 are arranged in parallel in the first mounting groove 11, and are respectively located at the two ends of the length direction of the first mounting groove 11, the first roller 32 is arranged horizontally, and the length direction of the first roller 32 is the same as the width direction of the first mounting groove 11, the first There is a distance between the roller 32 and the bottom surface of the first mounting groove 11, and it is rotatably connected to the first mounting platform 1 around its own axis; the first belt 31 is wound between the two first rollers 32 and is used in conjunction with the first roller 32; the first driving member is a first motor, the first motor is embedded in the first mounting platform 1, and the output shaft of the first motor is coaxially arranged with the first roller 32 near the discharge port of the first belt 31, and is fixedly connected to the roller near itself, the first motor is fixedly connected to the first mounting platform 1, and the output shaft of the first motor is rotatably connected to the first mounting platform 1 around its own axis.

[0039] Reference Figure 1 and Figure 2 The sorting component 5 includes an air inlet pipe 51 and a pump 52, wherein the air inlet pipe 51 is vertically arranged at the discharge port of the first belt 31, the top of the air inlet pipe 51 is expanded from bottom to top, and the width of the top of the air inlet pipe 51 is the same as the width of the first belt 31, and the air inlet pipe 51 is fixedly connected to the first mounting platform 1; the pump 52 is installed at the bottom of the air inlet pipe 51.

[0040] Reference Figure 1 and Figure 2 The second mounting platform 2 is horizontally provided on the side of the first mounting platform 1 close to the air inlet duct 51; the material receiving assembly 7 includes a storage box 71 and a material receiving plate 72, wherein the storage box 71 is horizontally arranged on the side of the air inlet duct 51 away from the first belt 31, and is located between the flared structure at the top of the air inlet duct 51 and the second mounting platform 2, the length direction of the storage box 71 is the same as the width direction of the first belt 31, and the length of the storage box 71 is the same as the width of the first belt 31, the top of the storage box 71 is an opening structure, and the storage box 71 is fixedly connected to the second mounting platform 2; the material receiving plate 72 is fixedly provided at the top opening of the storage box 71, the material receiving plate 72 is located on the side of the storage box 71 close to the first belt 31, the material receiving plate 72 gradually approaches the air inlet duct 51 from bottom to top, and a distance is left between the material receiving plate 72 and the air inlet duct 51 in the horizontal direction, and the top of the material receiving plate 72 is located below the top surface of the first belt 31.

[0041] When sorting the mixed raw materials, start the first motor and the pump 52, the output shaft of the first motor drives the first roller 32 to rotate, and the first roller 32 drives the first belt 31 to start rotating, and then the mixed raw materials are placed at the feed port of the first belt 31, and the first belt 31 transports the mixed raw materials to the discharge port of the first belt 31, and then the mixed raw materials slide downward by their own gravity and inertia.

[0042] When the mixed raw materials slide down to just above the air inlet pipe 51, the pump 52 transports the outside air to the top of the air inlet pipe 51 through the bottom of the air inlet pipe 51, so that an upward airflow is formed at the top of the air inlet pipe 51, and the airflow blows the mixed raw materials upward; the airflow has a greater impact on the non-metallic raw materials with smaller weight in the mixed raw materials, so that the non-metallic raw materials move to the receiving plate 72 under the action of their own gravity, inertia and airflow, and slide into the storage box 71 through the receiving plate 72; the airflow has a greater impact on the metal raw materials with heavier weight in the mixed raw materials, so that the metal raw materials move to the bottom of the receiving plate 72 through the space between the receiving plate 72 and the air inlet pipe 51 under the action of their own gravity and inertia; the setting of the receiving plate 72 facilitates the non-metallic raw materials to enter the storage box 71.

[0043] It should be noted that the inventors do not believe that the weight of metal materials must be greater than the weight of non-metallic materials; rather, in the mixed raw materials of scrap steel, the weight of non-metallic raw materials is less than the weight of metallic raw materials.

[0044] Reference Figure 1 and Figure 2 A second mounting groove 21 is provided on the top surface of the second mounting platform 2. The length direction of the second mounting groove 21 is the same as the length direction of the first mounting groove 11. The second mounting groove 21 passes through the second mounting platform 2 along its own length direction; the second conveying part 4 includes two second rollers 42, a second belt 41, and a second driving member, wherein the two second rollers 42 are arranged in parallel in the second mounting groove 21 and are respectively located at the two ends of the length direction of the second mounting groove 21. The second rollers 42 are arranged horizontally, and the length direction of the second rollers 42 is the same as the width direction of the second mounting groove 21. There is a distance between the two rollers 42 and the bottom surface of the second mounting groove 21, and they are rotatably connected to the second mounting platform 2 around their own axes; the second belt 41 is wound between the two second rollers 42 and is used in conjunction with the second roller 42; the second driving member is a second motor, the second motor is embedded in the second mounting platform 2, and the output shaft of the second motor is coaxially arranged with the second roller 42 near the discharge port of the second belt 41, and is fixedly connected to the roller near itself, the second motor is fixedly connected to the second mounting platform 2, and the output shaft of the second motor is rotatably connected to the second mounting platform 2 around its own axis.

[0045] Reference Figure 1 and Figure 2A buffer plate 22 is provided above the second mounting platform 2. The buffer plate 22 is located on the side of the air inlet pipe close to the receiving plate 72. The buffer plate 22 is arranged in an arc shape, and the buffer plate 22 gradually moves from top to bottom to the first mounting platform 1. The top end of the buffer plate 22 is fixedly connected to the top of the air inlet pipe. There is a distance between the bottom end of the buffer plate 22 and the top surface of the second belt 41, and it is fixedly connected to the top surface of the second mounting platform 2.

[0046] The metal raw material falls downward onto the buffer plate 22 and slides downward on the buffer plate 22. The buffer plate 22 can buffer the metal raw material, thereby reducing the impact of the metal raw material on the second belt 41. The second motor, analyzer 61 and pump 52 are started at the same time, and when the metal raw material moves through the buffer plate 22 to the feed port of the second belt 41, the second motor output shaft drives the second roller 42 and the second belt 41 to rotate, so that the second belt 41 transports the metal raw material to the discharge port of the second belt 41.

[0047] Reference Figure 1 and Figure 2 A sorting component 6 is provided between the second mounting platform 2 and the storage box 71, and the sorting component 6 includes an analyzer 61, a protective box 64, an electric telescopic plate 63, and a controller 62, wherein the bottom of the protective box 64 is an open structure, the protective box 64 is arranged horizontally, and the length direction of the protective box 64 is the same as the width direction of the second belt 41, and the protective box 64 is fixedly connected to the bottom surface of the storage box 71; the analyzer 61 is fixedly arranged in the protective box 64, and the analyzer 61 is used to detect the steel content in the metal raw material and transmit the corresponding detection signal; the electric telescopic plate 63 is vertically arranged on the side of the protective box 64 away from the first mounting platform 1, the fixed end of the electric telescopic plate 63 is fixedly connected to the bottom surface of the storage box 71, and the movable end of the electric telescopic plate 63 can abut against the top surface of the second belt 41; the controller 62 is fixedly arranged on the top surface of the protection box 64, and the controller 62 is electrically connected to the electric telescopic plate 63 and the analyzer 61. The controller 62 responds to the detection signal and controls the working state of the electric telescopic plate 63.

[0048] Reference Figure 1 and Figure 2The material receiving assembly 7 also includes a cylinder 75, a first material receiving box 73, and a second material receiving box 74, wherein the cylinder 75 is horizontally arranged on the side of the second mounting platform 2 away from the first mounting platform 1, the length direction of the cylinder 75 is the same as the width direction of the second belt 41, and the fixed end of the cylinder 75 is fixedly connected to the second mounting platform 2; the cylinder 75 is electrically connected to the controller 62, and the controller 62 responds to the detection signal and controls the working state of the cylinder 75; the first material receiving box 73 is horizontally arranged at one end of the cylinder 75, and the top of the first material receiving box 73 is an open structure. The length direction of the first material receiving box 73 is the same as the length direction of the cylinder 75, and the length of the first material receiving box 73 is the same as the length direction of the second belt 41 The width is the same, the first material receiving box 73 is fixedly connected to the movable end of the cylinder 75, and the first material receiving box 73 can be located directly below the discharge port of the second belt 41, and the first material receiving box 73 is used to receive qualified raw materials; the second material receiving box 74 is horizontally arranged on the side of the first material receiving box 73 away from the cylinder 75, and the top of the second material receiving box 74 is an open structure, the length direction of the second material receiving box 74 is the same as the length direction of the cylinder 75, and the length of the second material receiving box 74 is the same as the width of the second belt 41, the second material receiving box 74 is fixedly connected to the first material receiving box 73, and the second material receiving box 74 can be located directly below the discharge port of the second belt 41, and the second material receiving box 74 is used to receive unqualified raw materials.

[0049] During the transportation of the metal raw materials on the second belt 41, the analyzer 61 detects the steel content of the metal raw materials located directly below it. The raw materials whose steel content exceeds the preset value are qualified raw materials, and the raw materials whose steel content does not exceed the preset value are unqualified raw materials. When the detection result of the analyzer 61 changes, the analyzer 61 transmits the corresponding detection signal to the controller 62, and the controller 62 controls the movable end of the electric telescopic plate 63 to extend downward so that the movable end of the electric telescopic plate 63 abuts against the top surface of the second belt 41; and when the movable end of the electric telescopic plate 63 abuts against the top surface of the second belt 41, the movable end of the electric telescopic plate 63 is exactly between the qualified raw materials and the unqualified raw materials, and when the abutment time of the movable end of the electric telescopic plate 63 with the second belt 41 reaches the preset time, the controller 62 controls the movable end of the electric telescopic plate 63 to move upward, and leave a distance between the qualified raw materials and the unqualified raw materials; so that the material receiving component 7 can distinguish and receive qualified raw materials from unqualified raw materials.

[0050] When the analyzer 61 detects that the raw materials are qualified raw materials and the qualified raw materials are located at the discharge port of the second belt 41, the movable end of the cylinder 75 drives the first material receiving box 73 to be located directly below the discharge port of the second belt 41, so that the qualified raw materials enter the first material receiving box 73 under the action of their own gravity and inertia; when the analyzer 61 detects that the raw materials are unqualified raw materials, the movable end of the cylinder 75 drives the second material receiving box 74 to be located directly below the discharge port of the second belt 41, so that the unqualified raw materials enter the second material receiving box 74 under the action of their own gravity and inertia.

[0051] The implementation principle of a sorting device for scrap steel in an embodiment of the present application is as follows: when sorting mixed raw materials, the first belt 31 transports the mixed raw materials to the discharge port of the first belt 31, and then the mixed raw materials slide downward by their own gravity and inertia.

[0052] When the mixed raw materials slide down to just above the air inlet pipe 51, the pump 52 transports the outside air through the bottom of the air inlet pipe 51 to the top of the air inlet pipe 51, so that an upward airflow is formed on the top of the air inlet pipe 51, and the airflow blows the mixed raw materials upward; the non-metallic raw materials move to the receiving plate 72 under the action of their own gravity, inertia and airflow, and slide into the storage box 71 through the receiving plate 72; and the metal raw materials move to the feed port of the second belt 41 through the space between the receiving plate 72 and the air inlet pipe 51 under the action of their own gravity and inertia, and the second belt 41 transports the metal raw materials to the discharge port of the second belt 41.

[0053] During the transportation of the metal raw materials on the second belt 41, the analyzer 61 detects the steel content of the metal raw materials directly below it. When the detection result of the analyzer 61 changes, the controller 62 controls the movable end of the electric telescopic plate 63 to extend downward, so that the movable end of the electric telescopic plate 63 abuts against the top surface of the second belt 41; and when the movable end of the electric telescopic plate 63 abuts against the top surface of the second belt 41, the movable end of the electric telescopic plate 63 is just located between the qualified raw materials and the unqualified raw materials, so that there is a distance between the qualified raw materials and the unqualified raw materials; it is convenient for the material receiving component 7 to distinguish and receive qualified raw materials from unqualified raw materials.

[0054] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A sorting device for scrap steel, characterized by: The invention comprises a first mounting platform, a first conveying part, a material receiving assembly, and a sorting assembly. The first conveying part comprises two first rollers located in the same horizontal plane and having axes parallel to each other, a first belt arranged between the two first rollers, and a first driving member arranged on the first mounting platform and used to drive the first rollers to rotate. The first rollers are rotatably connected to the first mounting platform around their own axes. The first belt is used to transport raw materials. The material receiving assembly is arranged at the discharge port of the first belt and is spaced apart from the first belt. The sorting assembly is used to transport non-metallic raw materials among the raw materials to the material receiving assembly and to transport metal raw materials among the raw materials to the bottom of the first belt. The sorting assembly is arranged between the first belt and the receiving assembly, and includes an air inlet pipe vertically arranged at the outlet of the first belt and connected to the first mounting platform, and a pump installed on the air inlet pipe; the air inlet pipe is horizontally spaced from the receiving assembly; the receiving assembly is located below the top surface of the first belt; The material receiving assembly includes a horizontally arranged storage box with an open top; a second mounting platform is provided below the storage box and is fixedly connected to the storage box; A distance is left between the storage box and the second mounting platform; a second conveying portion is provided above the second mounting platform, the second conveying portion comprising two second rollers located in the same horizontal plane and having axes parallel to each other, a second belt provided between the two second rollers, a second driving member provided on the second mounting platform and used to drive the second rollers to rotate, the second rollers being rotatably connected to the second mounting platform around their own axes, and the second belt being used to receive the metal raw material; A sorting assembly is provided above the second belt, and the sorting assembly includes an analyzer located above the second belt and connected to the storage box, a controller fixedly arranged on the analyzer, and a vertically arranged electric telescopic plate. The analyzer is used to detect the steel content in the metal raw material and transmit a corresponding detection signal; the fixed end of the electric telescopic plate is fixedly connected to the storage box, and the movable end of the electric telescopic plate can abut against the top surface of the second belt; the controller is connected to both the analyzer and the electric telescopic plate, and the controller responds to the detection signal and controls the working state of the electric telescopic plate; when the detection result of the analyzer changes, the analyzer transmits the corresponding detection signal to the controller, and the controller controls the movable end of the electric telescopic plate to extend downward so that the movable end of the electric telescopic plate abuts against the top surface of the second belt; and when the abutment time between the movable end of the electric telescopic plate and the second belt reaches a preset time, the controller controls the movable end of the electric telescopic plate to move upward; The material receiving assembly also includes a horizontally arranged cylinder, a first material receiving box fixedly connected to the movable end of the cylinder, and a second material receiving box fixedly arranged on the side of the first material receiving box away from the cylinder. The top of the first material receiving box and the top of the second material receiving box are both open structures. The first material receiving box and the second material receiving box can both be located directly below the second belt discharge port; the fixed end of the cylinder is fixedly connected to the second mounting platform.

2. The device for sorting scrap iron and steel according to claim 1, characterized in that: A buffer plate is provided on a side of the air inlet pipe away from the first belt, and the buffer plate gradually approaches the analyzer from top to bottom.

3. The device for sorting scrap iron and steel according to claim 1, characterized in that: The outer cover of the analyzer is provided with a protection box, the bottom of which is an open structure, and the protection box is fixedly connected to the storage box and the analyzer.

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