Sorting system

Abstract

The present invention provides a sorting system, which includes: a first sorting device, which is used to receive materials and remove iron and non-metals mixed in the materials, and output the remaining metal materials; a second sorting device, which is connected to the first sorting device, which is used to receive metal materials, and use the density of each metal in the metal materials to separate aluminum and other metals in the metal materials and then output them separately; a drying device, which is connected to the second sorting device, which is used to receive and dry the separated aluminum. In the present invention, the iron and non-metals in the materials are first removed, and the remaining metal materials use their own different densities to separate aluminum, which can effectively improve the sorting quality and ensure the purity of the sorted aluminum. In addition, aluminum can be sorted out by the first sorting device and the second sorting device, without manual sorting, which is simple and convenient, improves the sorting efficiency, and greatly reduces the labor intensity of the staff.

Description

Technical Field

[0001] The present invention relates to the technical field of material sorting, and in particular to a sorting system. Background Art

[0002] In industrial production, especially the metal industry, a large amount of waste is often generated during the production process. The waste is generally a mixture of metal and metal, or a mixture of metal and non-metal, or a mixture of metal and metal and non-metal. It is usually necessary to sort the waste so that the metal therein can be reused. Taking waste aluminum as an example, waste aluminum contains metals such as aluminum, iron, magnesium, lead and non-metals such as plastics, soil, rubber, and sawdust. Aluminum companies generally recycle and reuse the aluminum in waste aluminum. However, when recycling aluminum in waste aluminum, it is manually sorted. First, the soil and garbage are screened out, and then the non-metal and metal waste are sorted out. The sorted waste aluminum is mixed and will not be further subdivided. The tools used for sorting are magnets, steel files, hammers, pliers, screwdrivers, etc., and the staff relies on experience when sorting, which not only easily leads to low sorting efficiency and poor quality, but also has high labor intensity for the staff. Summary of the invention

[0003] In view of this, the present invention proposes a sorting system, aiming to solve the problem in the prior art that manual sorting of aluminum in scrap aluminum easily leads to low sorting efficiency, poor quality and high labor intensity.

[0004] The present invention proposes a sorting system, which includes: a first sorting device, used to receive materials and remove iron and non-metals contained in the materials, and output the remaining metal materials; a second sorting device, connected to the first sorting device, used to receive metal materials, and use the density of each metal in the metal materials to separate aluminum and other metals in the metal materials and then output them separately; a drying device, connected to the second sorting device, used to receive and dry the separated aluminum.

[0005] Furthermore, in the above-mentioned sorting system, the first sorting device includes: a screening device, used to receive materials and screen out materials with a preset particle size; a magnetic separation mechanism, connected to the screening device, used to remove iron from materials with a preset particle size; a sorting mechanism, connected to both the magnetic separation mechanism and the second sorting device, used to remove non-metals from the materials after removing iron, and transporting the remaining metal materials to the second sorting device.

[0006] Furthermore, in the above-mentioned sorting system, the magnetic separation mechanism includes: a first vibrating feeder, connected to the screening device, for evenly distributing materials of a preset particle size; a first magnetic separation device, connected to the first vibrating feeder, for separating iron and iron-with aluminum in materials of a preset particle size, and outputting the separated iron and iron-with aluminum; a second vibrating feeder, connected to the first magnetic separation device, for evenly distributing the materials after removing the iron and iron-with aluminum; a second magnetic separation device, connected to both the second vibrating feeder and the sorting mechanism, for separating aluminum-with iron in the materials after removing the iron and iron-with aluminum, and outputting the separated aluminum-with iron, and transporting the remaining materials to the sorting mechanism.

[0007] Furthermore, in the above-mentioned sorting system, the sorting mechanism includes: a third vibrating feeder, connected to the magnetic separation mechanism, and used to evenly distribute the material after iron removal; an eddy current separator, connected to both the third vibrating feeder and the second sorting device, and used to remove non-metals from the material after iron removal, and transport the remaining metal materials after non-metal removal to the second sorting device.

[0008] Furthermore, in the above-mentioned sorting system, there are two first sorting devices, and the two first sorting devices are arranged in parallel and are both connected to the second sorting device.

[0009] Furthermore, in the above-mentioned sorting system, the second sorting device includes: a desludging mechanism, connected to the first sorting device, for receiving metal materials and desludging the metal materials; a first heavy medium separator, connected to the desludging mechanism, in which a heavy medium suspension of a first preset density is stored, for separating metals less than the first preset density and metals greater than the first preset density in the desludged metal materials and outputting them separately; a second heavy medium separator, connected to the first heavy medium separator, in which a heavy medium suspension of a second preset density is stored, for receiving metals greater than the first preset density, and separating aluminum less than the second preset density and metals greater than the second preset density and outputting them separately; a drying device is connected to the second heavy medium separator to receive and dry the separated aluminum.

[0010] Furthermore, in the above-mentioned sorting system, the desludging mechanism includes: a desludging screen, connected to the first sorting device and the first heavy medium separator, for receiving metal materials, desludging the metal materials, and evenly distributing the metal materials, and conveying the desludged metal materials to the first heavy medium separator; a water washing device, connected to the desludging screen, for spraying water to clean the metal materials.

[0011] Furthermore, in the above-mentioned sorting system, a cleaning device is arranged between the first heavy medium separator and the second heavy medium separator to clean the separated metal with a density greater than the first preset density; and / or a cleaning device is arranged between the second heavy medium separator and the drying device to clean the separated aluminum.

[0012] Furthermore, in the above-mentioned sorting system, the second sorting device further comprises: two density control systems, which are respectively connected to the first heavy medium sorting machine and the second heavy medium sorting machine in a one-to-one correspondence, and are used to adjust the density of the heavy medium suspension.

[0013] Furthermore, in the above-mentioned sorting system, each density control system includes: a medium barrel, which is used to store heavy medium suspension, and the outlet of the medium barrel is connected to the corresponding heavy medium sorting machine through a first pipeline to transport the heavy medium suspension to the corresponding heavy medium sorting machine; a density control mechanism, which is arranged in the first pipeline, and is used to detect the density of the heavy medium suspension, and compare the detected density of the heavy medium suspension with a preset density range; an adjusting device, the outlet of the medium barrel is also connected to the adjusting device through a second pipeline, and the adjusting device is also connected to the inlet of the medium barrel and the density control mechanism, and the density control mechanism is also used to control the adjusting device to adjust the density of the heavy medium suspension according to the comparison result, and transport the adjusted heavy medium suspension to the medium barrel.

[0014] Furthermore, in the above-mentioned sorting system, the regulating device includes: a separation device, connected to the second pipeline, for separating the first density solution and the second density solution in the heavy medium suspension; the separation device is also connected to the inlet of the medium barrel to transport the separated first density solution to the medium barrel; wherein the heavy medium suspension has the first density solution and the second density solution; a regulating mechanism, connected to the separation device, the inlet of the medium barrel and the density control mechanism, for receiving the separated second density solution; the density control mechanism is also used to control the regulating mechanism to adjust the density of the second density solution according to the comparison result, and transport the adjusted solution to the medium barrel.

[0015] Furthermore, in the above-mentioned sorting system, the regulating mechanism includes: a diverter device, a first inlet of the diverter device is connected to the separation device to receive the second density solution; a first outlet of the diverter device is connected to the inlet of the medium barrel, and a density control mechanism is also connected to the diverter device, and is used to control the diverter device to transport the second density solution to the medium barrel when the density of the heavy medium suspension meets the preset density range; a concentrating mechanism, a second outlet of the diverter device is connected to the inlet of the medium barrel through the concentrating mechanism, and the density control mechanism is also used to control the diverter device to transport the second density solution to the concentrating mechanism when the density of the heavy medium suspension is less than the preset density range; the concentrating mechanism is used to concentrate the second density solution and transport the concentrated solution to the medium barrel; a clean water conveying device, a second inlet of the diverter device is connected to the clean water conveying device, and the clean water conveying device is connected to the density control mechanism, and the density control mechanism is used to control the clean water conveying device to transport clean water into the medium barrel through the diverter device when the density of the heavy medium suspension is greater than the preset density range.

[0016] In the present invention, iron and non-metal in the material are first removed, and the remaining metal material is used to separate aluminum by utilizing its own different density, which can effectively improve the sorting quality and ensure the purity of the sorted aluminum. In addition, the aluminum can be sorted out by the first sorting device and the second sorting device without manual sorting, which is simple and convenient, improves the sorting efficiency, greatly reduces the labor intensity of the staff, and solves the problem in the prior art that manual sorting of aluminum in scrap aluminum materials easily leads to low sorting efficiency, poor quality and high labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0018] Figure 1 A schematic diagram of the structure of a sorting system provided by an embodiment of the present invention;

[0019] Figure 2 A schematic structural diagram of a first sorting device in a sorting system provided in an embodiment of the present invention;

[0020] Figure 3 A structural schematic diagram of a magnetic separation mechanism in a separation system provided in an embodiment of the present invention;

[0021] Figure 4 A schematic structural diagram of a second sorting device in the sorting system provided in an embodiment of the present invention;

[0022] Figure 5A schematic structural diagram of a density control system in a sorting system provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0023] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to be able to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0024] See also Figure 1 , Figure 1 A schematic diagram of the structure of a sorting system provided for an embodiment of the present invention. As shown in the figure, the sorting system includes: a first sorting device 1, a second sorting device 2 and a drying device. Among them, the first sorting device 1 is used to receive materials and remove iron and non-metals mixed in the materials, and output the remaining metal materials. Specifically, the material can be scrap aluminum, and the purpose of the sorting system is to sort out the aluminum in the scrap aluminum. Scrap aluminum includes: aluminum, iron (pure iron parts, aluminum strip iron), magnesium (magnesium alloy), lead (lead alloy), copper (copper alloy), zinc (zinc alloy) and other metals and non-metals (sand, plastic, sponge, rubber, etc.). The first sorting device 1 removes iron and non-metals in the scrap aluminum, and the remaining materials are all metal materials.

[0025] The second sorting device 2 is connected to the first sorting device 1. The second sorting device 2 is used to receive metal materials, separate aluminum and other metals in the metal materials by using the different densities of each metal, and then output the separated aluminum and other metals respectively. The drying device is connected to the second sorting device 2. The drying device receives the separated aluminum and dries the aluminum to facilitate the subsequent secondary use of the aluminum. The second sorting device 2 can transport the separated other metals to other equipment for processing.

[0026] It can be seen that in this embodiment, the iron and non-metal in the material are first removed, and the remaining metal material uses its own different density to separate the aluminum, which can effectively improve the sorting quality and ensure the purity of the sorted aluminum. In addition, the aluminum can be sorted out by the first sorting device 1 and the second sorting device 2 without manual sorting, which is simple and convenient, improves the sorting efficiency, greatly reduces the labor intensity of the staff, and solves the problem in the prior art that manual sorting of aluminum in scrap aluminum materials easily leads to low sorting efficiency, poor quality and high labor intensity.

[0027] See also Figures 1 to 3In the above embodiment, the first sorting device 1 may include: a screening device 11, a magnetic separation mechanism 12 and a sorting mechanism 13. Among them, the screening device 11 is used to receive materials and screen out materials with preset particle sizes. Specifically, the screening device 11 can be connected to the storage device through a conveying device, and the materials stored in the storage device are transported to the screening device 11 through the conveying device. The screening device 11 screens the materials according to the particle size of the materials to obtain materials with preset particle sizes, and the materials with other particle sizes are output by the screening device 11 to other equipment for processing. In specific implementation, the preset particle size can be determined according to actual conditions, and this embodiment does not impose any restrictions on this.

[0028] In this embodiment, the screening device 11 can screen the material into four particle sizes of 0-5mm, 5-50mm, 50-110mm, and above 110mm. The screening device 11 can be connected to a shaking table to transport the 0-5mm material to the shaking table for sorting. The screening device 11 can output materials larger than 110mm, and subsequent equipment can perform secondary crushing on the materials larger than 110mm, or directly sort them manually. The materials of the two particle sizes of 5-50mm and 50-110mm are materials of preset particle sizes. This is because materials larger than 110mm are easily affected in the sorting efficiency when transported to the second sorting device 2, and manual sorting is more efficient; materials of 0-5mm are easily affected in the sorting effect when transported to the second sorting device 2, thereby reducing the sorting effect of the second sorting device 2.

[0029] Preferably, the screening device 11 is a cylindrical screen, which classifies the material through circular motion to remove small particles of sand and gravel, dust and large pieces of aluminum that can be directly put into the furnace.

[0030] The magnetic separation mechanism 12 is connected to the screening device 11, and is used to remove iron from the material of a preset particle size. The sorting mechanism 13 is connected to both the magnetic separation mechanism 12 and the second sorting device 2, and is used to remove non-metals from the material after iron is removed, and transport the metal flow after iron and non-metals are removed to the second sorting device 2.

[0031] See also Figures 1 to 3, the magnetic separation mechanism 12 may include: a first vibrating feeder, a first magnetic separation device 121, a second vibrating feeder and a second magnetic separation device 122. Among them, the first vibrating feeder is connected to the screening device 11, and the first vibrating feeder is used to evenly distribute the material of the preset particle size. The first magnetic separation device 121 is connected to the first vibrating feeder, and the first magnetic separation device 121 is used to separate the iron and iron-band aluminum in the material by using the magnetic field characteristics of the evenly distributed material, and output the separated iron and iron-band aluminum. Specifically, based on the characteristic that iron is easily attracted by the magnetic field, the first magnetic separation device 121 has a certain magnetic field strength, and uses the magnetic field to attract pure iron parts (such as: iron nails, screws, nuts, iron sheets) and iron-band aluminum, so that the iron and iron-band aluminum are separated from other substances in the material.

[0032] The second vibrating feeder is connected to the first magnetic separation device 121, and the second vibrating feeder is used to evenly distribute the material after the iron and iron-band aluminum are removed. The second magnetic separation device 122 is connected to both the second vibrating feeder and the sorting mechanism 13, and the second magnetic separation device 122 is used to separate the aluminum-band iron from the material after the iron and iron-band aluminum are removed by using the magnetic field characteristics, and output the separated aluminum-band iron, and transport the remaining material to the sorting mechanism 13. Specifically, the second magnetic separation device 122 has a certain magnetic field strength, and uses the magnetic field to attract the aluminum-band iron, so that the aluminum-band iron is separated from other substances in the material.

[0033] The magnetic field strength of the second magnetic separation device 122 is greater than that of the first magnetic separation device 121, so as to separate the aluminum strip iron in the material and ensure the separation quality of the iron. In specific implementation, the surface field of the first magnetic separation device 121 is 1500Gs, and the surface field of the second magnetic separation device 122 is 4500Gs.

[0034] Preferably, the first magnetic separation device 121 and the second magnetic separation device 122 are both permanent magnetic rollers.

[0035] The arrangement of the first vibrating feeder and the second vibrating feeder facilitates more effective separation of iron and iron-related metals from the material during magnetic separation; the arrangement of the first magnetic separation device 121 and the second magnetic separation device 122 can effectively remove iron from the material, thereby improving the separation efficiency and separation quality of aluminum in the material.

[0036] The sorting mechanism 13 may include: a third vibrating feeder and an eddy current separator 131. Among them, the third vibrating feeder is connected to the second magnetic separation device 122 in the magnetic separation mechanism 12, and the third vibrating feeder is used to make the material after the iron is removed uniformly distributed. The eddy current separator 131 is connected to both the third vibrating feeder and the second separation device 2, and the eddy current separator 131 is used to remove the non-metal in the material after the iron is removed, and to convey the remaining metal material after the non-metal is removed to the second separation device 2. The non-metal in the material includes: sponge, plastic, rubber, large-grained sand and gravel, etc. The metal materials sorted by the eddy current separator 131 include: magnesium, copper, zinc, lead, aluminum, and stainless steel. The non-metal in the material is removed by the eddy current separator 131, which is convenient for the sorting of aluminum and can effectively ensure the purity of the separated aluminum. In addition, the eddy current separator 131 can also remove a small amount of stainless steel.

[0037] In this embodiment, the screening device 11 screens out materials of a preset particle size, making the particle size of the material more concentrated, effectively improving the separation effect of the magnetic separation mechanism 12 on iron, and improving the sorting efficiency of the sorting mechanism 13 on non-metals, facilitating the separation of aluminum in the material, and improving the purity of the separated aluminum.

[0038] See also Figures 1 to 3 In the above embodiments, there are two first sorting devices 1, which are arranged in parallel, and both first sorting devices 1 are connected to the second sorting device 2. Specifically, the screening device 11, the magnetic separation mechanism 12 and the sorting mechanism 13 are two sets arranged in parallel, so that when one of the first sorting devices 1 fails or stops working, the other first sorting device 1 can continue to work, which can ensure the normal operation of the second sorting device 2.

[0039] In specific implementation, a cutting belt conveyor is provided between the two eddy current separators 131. When one of the eddy current separators 131 fails or stops working, the cutting belt conveyor transports the material in the failed eddy current separator 131 to the other eddy current separator 131.

[0040] See also Figure 1 and Figure 4 In the above embodiments, the second sorting device 2 may include: a desludging mechanism 21, a first heavy medium separator 22, and a second heavy medium separator 23. The desludging mechanism 21 is connected to the first sorting device 1, specifically, the desludging mechanism 21 is connected to the eddy current separator 131 in the sorting mechanism 13, and the desludging mechanism 21 is used to receive the metal material remaining after removing iron and non-metal from the first sorting device 1, and desludging the metal material.

[0041] The first heavy medium separator 22 is connected to the desludging mechanism 21. A heavy medium suspension having a first preset density is stored in the first heavy medium separator 22. The first heavy medium separator 22 is used to separate metals having a density less than the first preset density and metals having a density greater than the first preset density in the desludging metal material, and output the metals having a density less than the first preset density and the metals having a density greater than the first preset density, respectively. Specifically, the first heavy medium separator 22 separates metals by utilizing the difference in density between the heavy medium suspension and the metal material.

[0042] Heavy media refers to media larger than water (1g / cm 3 The process of separating mineral particles in a heavy medium is called heavy medium separation. The basic principle of heavy medium separation is Archimedes principle - particles with a density less than that of the heavy medium will float in the medium, and particles with a density greater than that of the heavy medium will sink in the medium.

[0043] In the first heavy medium separator 22, metals with a density greater than the first preset density of the heavy medium suspension sink, and metals with a density less than the first preset density of the heavy medium suspension float. An overflow port is provided at the top of the first heavy medium separator 22, and the floating metal flows out from the overflow port. A discharge port is provided at the bottom of the first heavy medium separator 22, and the sinking metal can be transported to the discharge port for output through a scraper. In specific implementation, the heavy medium and the first preset density can be determined according to actual conditions, and this embodiment does not impose any restrictions on this.

[0044] In this embodiment, the heavy medium is ferrosilicon powder, which is a smelted ferrosilicon alloy with the characteristics of oxidation resistance, high hardness, and strong magnetism. After use, it can be recycled after screening and magnetic separation. In this embodiment, the first preset density is 2.0-2.1g / cm 3 , magnesium and thin aluminum flakes float in the heavy medium suspension, while aluminum, copper, zinc, lead and stainless steel sink in the heavy medium suspension, so that magnesium and thin aluminum flakes are separated from aluminum, copper, zinc, lead and stainless steel and output them separately.

[0045] The second heavy medium separator 23 is connected to the first heavy medium separator 22. A heavy medium suspension having a second preset density is stored in the second heavy medium separator 23. The second heavy medium separator 23 is used to receive metals having a density greater than the first preset density, and to separate aluminum having a density less than the second preset density and metals having a density greater than the second preset density, and to output the separated aluminum and other metals respectively. The second heavy medium separator 23 is also connected to a drying device, which receives and dries the separated aluminum.

[0046] In the second heavy medium separator 23, metals with a density greater than the second preset density of the heavy medium suspension sink, and metals with a density less than the second preset density of the heavy medium suspension float. An overflow port is provided at the top of the second heavy medium separator 23, and the floating metal flows out from the overflow port. A discharge port is provided at the bottom of the second heavy medium separator 23, and the sinking metal can be transported to the discharge port by a scraper for output. In specific implementation, the second preset density can be determined according to actual conditions, and this embodiment does not impose any restrictions on this.

[0047] In this embodiment, the second preset density is 3.0-3.1 g / cm 3 The metals with a density greater than the first preset density separated by the first heavy medium separator 22 are aluminum, copper, zinc, lead, and stainless steel. Aluminum floats in the heavy medium suspension of the second heavy medium separator 23, while copper, zinc, lead, and stainless steel sink in the heavy medium suspension, thereby separating aluminum from copper, zinc, lead, and stainless steel and outputting them separately.

[0048] In this embodiment, the particle sizes of the ferrosilicon powder in the first heavy medium separator 22 and the second heavy medium separator 23 are different. The fine-grained ferrosilicon powder is used in the first heavy medium separator 22, and the fine-grained ferrosilicon powder has a small duty cycle, and the formed suspension is suitable for suspending flake materials, such as magnesium flakes and thin aluminum flakes. The coarse-grained ferrosilicon powder is used in the second heavy medium separator 23, and the coarse-grained ferrosilicon powder has a slightly larger duty cycle, and is suitable for suspending block materials, such as block, tubular, and strip aluminum.

[0049] The metals output from the overflow port and the discharge port of the first heavy medium separator 22 are all with heavy medium suspension, which needs to be cleaned. Therefore, a cleaning device 24 is provided between the first heavy medium separator 22 and the second heavy medium separator 23. The cleaning device 24 is used to clean the separated metals greater than the first preset density and the metals less than the first preset density. Specifically, the cleaning device 24 is a de-medium screen. The overflow port and the discharge port of the first heavy medium separator 22 correspond to the first ends of the two chutes one by one, respectively, and the second ends of the two chutes correspond to the left and right channels of the de-medium screen one by one. The metals less than the first preset density output from the overflow port of the first heavy medium separator 22 are transported to the de-medium screen through the chute for cleaning, and the cleaned heavy medium is transported to the magnetic separator for recycling. The metals less than the first preset density, such as magnesium and thin aluminum sheets, are transported to the silo after cleaning and then transferred to the manual picking platform. The metals greater than the first preset density, such as aluminum, copper, zinc, lead, and stainless steel, are transported to the second heavy medium separator 23 after cleaning.

[0050] The metals output from the overflow and discharge port of the second heavy medium separator 23 are all with heavy medium suspension, which needs to be cleaned. Therefore, a cleaning device 24 is provided between the second heavy medium separator 23 and the drying device. The cleaning device 24 is used to clean the separated aluminum and metals with a density greater than the second preset density. Specifically, the cleaning device 24 is a de-medium screen. The overflow and discharge port of the second heavy medium separator 23 correspond to the first ends of the two chutes, respectively, and the second ends of the two chutes correspond to the left and right channels of the de-medium screen. The aluminum with a density less than the second preset density output from the overflow port of the second heavy medium separator 23 is transported to the de-medium screen through the chute for cleaning. The cleaned heavy medium is transported to the magnetic separator for recycling. The metals with a density greater than the second preset density, such as copper, zinc, lead, and stainless steel, are transported to the silo after cleaning and then transferred to the manual picking platform. The aluminum is transported to the drying device after cleaning.

[0051] Preferably, a cleaning device 24 is provided between the first heavy medium separator 22 and the second heavy medium separator 23 to clean the separated metal having a density greater than the first preset density; and / or, a cleaning device 24 is provided between the second heavy medium separator 23 and the drying device to clean the separated aluminum.

[0052] In a specific implementation, both the first heavy medium separator 22 and the second heavy medium separator 23 are provided with automatic detection and alarm devices, and when material blockage occurs, the automatic detection and alarm devices will sound an alarm.

[0053] It can be seen that in this embodiment, the metal material is desludged by the desludging mechanism 21, which facilitates the separation of the metal material in the heavy medium suspension, improves the separation efficiency, and avoids the influence of mud and sand on the density of the heavy medium suspension. The first heavy medium separator 22 and the second heavy medium separator 23 both separate the metals in the metal material according to the density of each metal, effectively improving the separation quality and ensuring the purity of the separated aluminum.

[0054] In the above embodiments, the desludging mechanism 21 may include: a desludging screen 211 and a water washing device. The desludging screen 211 is connected to the first sorting device 1, that is, the desludging screen 211 is connected to the eddy current separator 131, and the desludging screen 211 is used to receive the metal material, desludging the metal material, and evenly distribute the metal material. The desludging screen 211 is also connected to the first heavy medium separator 22 to transport the desludging metal material to the first heavy medium separator 22. The water washing device is connected to the desludging screen 211, and the water washing device is used to spray water to wash the evenly distributed metal material.

[0055] In specific implementation, the desludging screen 211 can be a linear vibrating screen, which uses high-frequency oscillation to separate the mud and sand on the metal material, and spreads the metal material on the screen surface to better contact with water, thereby improving the cleaning effect. The water washing device can be connected to the water treatment system to receive water provided by the water treatment system. The water pressure of the water spray can be determined according to actual conditions, and this embodiment does not impose any restrictions on this. In this embodiment, the water treatment system is connected to the nozzle, and water is sprayed through the nozzle, and the nozzle water pressure is 0.6-0.8Mpa.

[0056] It can be seen that in this embodiment, the metal material is cleaned by the desludging screen 211 and the water washing device, which effectively removes the mud and sand of the metal material, prevents the mud and sand from entering the heavy medium separator and affecting the density of the heavy medium suspension, and effectively ensures the stability of the heavy medium suspension. In addition, the desludging screen 211 can make the metal material evenly distributed, increase the contact area between the metal material and water, facilitate water spray cleaning, and improve the cleaning effect.

[0057] See also Figure 5 In the above embodiments, the second sorting device 2 may further include: two density control systems, wherein the two density control systems are respectively connected to the first heavy medium sorting machine 22 and the second heavy medium sorting machine 23 in a one-to-one correspondence, that is, the first heavy medium sorting machine 22 is connected to one of the density control systems, and the second heavy medium sorting machine 23 is connected to the other density control system, and each density control system is used to adjust the density of the heavy medium suspension in the corresponding heavy medium sorting machine so that the density of the heavy medium suspension is automatically controlled to a preset density.

[0058] Each density control system may include: a medium barrel 3, a density control mechanism 4 and an adjusting device 5. The medium barrel 3 is used to store a heavy medium suspension. The outlet of the medium barrel 3 is connected to the corresponding heavy medium separator through a first pipeline, and the medium barrel 3 conveys the heavy medium suspension to the corresponding heavy medium separator through the first pipeline. The density control mechanism 4 is arranged in the first pipeline, and the density control mechanism 4 is used to detect the density of the heavy medium suspension and compare the detected density of the heavy medium suspension with a preset density range.

[0059] Specifically, the density control mechanism 4 may include: a weighing tube 41, a density sensor 42 and a controller 43. The weighing tube 41 is arranged in the first pipeline and placed between the medium barrel 3 and the heavy medium separator. The density sensor 42 is arranged in the weighing tube 41 to detect the density of the heavy medium suspension. The controller 43 is connected to the density sensor 42, and the controller 43 is used to receive the density of the heavy medium suspension detected by the density sensor 42, and compare the detected density with a preset density range.

[0060] The outlet of the medium barrel 3 is also connected to the inlet of the regulating device 5 through the second pipeline, and the outlet of the regulating device 5 is connected to the inlet of the medium barrel 3. The regulating device 5 is used to receive the heavy medium suspension output by the medium barrel 3, and adjust the density of the heavy medium suspension, and transport the adjusted heavy medium suspension to the medium barrel 3. The regulating device 5 is connected to the density control mechanism 4, specifically, the regulating device 5 is connected to the controller 43, and the controller 43 is used to control the regulating device 5 to adjust the density of the heavy medium suspension according to the comparison result, and transport the adjusted heavy medium suspension to the medium barrel 3.

[0061] It can be seen that in this embodiment, the heavy medium suspension output from the medium barrel 3 is divided into two routes for transportation, one of which is transported to the corresponding heavy medium separator through the density control mechanism 4, in which the density control mechanism 4 detects and monitors the density of the heavy medium suspension; the other route is transported to the regulating device 5, which adjusts the density of the heavy medium suspension according to the comparison result of the density control mechanism 4 and then transports it to the medium barrel 3. In this way, the density of the heavy medium suspension can be accurately controlled, thereby ensuring the separation effect of the corresponding heavy medium separator on the metal material, improving the separation quality and purity of the separated aluminum. In addition, each density control system is monitored in real time, so that the heavy medium solution is always kept in a dynamic balance with small fluctuations.

[0062] See also Figure 5 In the above embodiment, the regulating device 5 may include: a separation device 51 and a regulating mechanism. The inlet of the separation device 51 is connected to the second pipeline, and the separation device 51 is used to receive a heavy medium suspension. The heavy medium suspension has a first density solution and a second density solution. The separation device 51 separates the first density solution and the second density solution. Specifically, the separation device 51 is a cyclone, the first density solution is a high-density solution, and the second density solution is a low-density solution. In specific implementation, the densities of the first density solution and the second density solution can be determined according to actual conditions, and this embodiment does not impose any restrictions on this.

[0063] The first outlet of the separation device 51 is connected to the inlet of the medium barrel 3, and the first outlet of the separation device 51 is used to deliver the separated first density solution to the medium barrel 3. The second outlet of the separation device 51 is connected to the regulating mechanism, and the regulating mechanism is used to receive the separated second density solution. The regulating mechanism is also connected to the inlet of the medium barrel 3 and the density control mechanism 4, and the density control mechanism 4 is also used to control the regulating mechanism to adjust the density of the second density solution according to the comparison result, and deliver the adjusted solution to the medium barrel 3.

[0064] Specifically, the first outlet of the cyclone is placed at the lower part of the cyclone, and the second outlet is placed at the upper part of the cyclone, i.e., the overflow port of the cyclone. The cyclone separates the heavy medium suspension into a high-density solution and a low-density solution through cyclone flow. The high-density solution is at the lower part of the cyclone and is transported to the medium barrel 3 through the first outlet. The low-density solution is at the upper part of the cyclone and is transported to the regulating mechanism through the second outlet through overflow.

[0065] The regulating mechanism may include: a diverter 52, a concentrating mechanism 53 and a clean water conveying device 54. The first inlet of the diverter 52 is connected to the second outlet of the separation device 51 to receive the second density solution. The first outlet of the diverter 52 is connected to the inlet of the medium barrel 3, and the diverter 52 is also connected to the density control mechanism 4, which is used to control the diverter 52 to convey the second density solution to the medium barrel 3 when the density of the heavy medium suspension meets the preset density range.

[0066] The second outlet of the flow dividing device 52 is connected to the inlet of the medium barrel 3 through the concentrating mechanism 53. The density control mechanism 4 is also used to control the flow dividing device 52 to convey the second density solution to the concentrating mechanism 53 when the density of the heavy medium suspension is less than the preset density range. The concentrating mechanism 53 concentrates the second density solution and conveys the concentrated solution to the medium barrel 3. Specifically, the concentrating mechanism 53 includes: a magnetic separator 531 and a demagnetizer 532 connected in series, the magnetic separator 531 is connected to the second outlet of the flow dividing device 52, and the demagnetizer 532 is connected to the inlet of the medium barrel 3. The magnetic separator 531 concentrates the second density solution, and the excess water generated after the concentration enters the circulating water through the tail liquid.

[0067] The second inlet of the diverter device 52 is connected to the clean water delivery device 54, and the clean water delivery device 54 is connected to the density control mechanism 4. The density control mechanism 4 is used to control the clean water delivery device 54 to deliver clean water to the medium barrel 3 through the diverter device 52 when the density of the heavy medium suspension is greater than the preset density range. Specifically, the clean water delivery device 54 delivers clean water to the diverter device 52, and the clean water is delivered to the medium barrel 3 through the first outlet of the diverter device 52.

[0068] Preferably, the flow dividing device 52 may include: a flow dividing box 521, a flow divider and a driving motor 522. The flow dividing box 521 is hollow inside and open at the top. A partition is arranged inside the flow dividing box 521, and the partition divides the flow dividing box 521 into two cavities. An outlet is provided at the bottom wall of the flow dividing box 521 corresponding to one of the cavities, i.e., the first outlet of the flow dividing box 521, and the first outlet of the flow dividing box 521 is connected to the inlet of the medium barrel 3; an outlet is also provided at the bottom wall of the flow dividing box 521 corresponding to the other cavity, i.e., the second outlet of the flow dividing box 521, and the second outlet of the flow dividing box 521 is connected to the magnetic separator 531 in the concentration mechanism 53. The flow divider is rotatably arranged at the top of the flow dividing box 521, and the liquid inlet end of the flow dividing box is connected to the second outlet of the separation device 51, and the liquid outlet end of the flow dividing box can selectively correspond to the first outlet or the second outlet of the flow dividing box 521. The diverter is connected to the driving motor 522, which drives the diverter to rotate, thereby controlling whether the solution in the diverter box 521 is output from the first outlet or the second outlet. The driving motor 522 is connected to the controller 43 to drive the diverter to move under the control of the controller 43.

[0069] Preferably, the clean water delivery device 54 may include: a clean water delivery pipe 541 and a clean water solenoid valve 542. The first end of the clean water delivery pipe 541 is connected to the second inlet of the diverter device 52, the second end of the clean water delivery pipe 541 may be connected to the water supply device, the clean water solenoid valve 542 is arranged on the clean water delivery pipe 541, the controller 43 is connected to the clean water solenoid valve 542, and the controller 43 controls whether the clean water is delivered by controlling the opening and closing of the clean water solenoid valve 542.

[0070] When the sizes of the pipeline valves of the separation device 51, the valves of the weighing tube 41, and the valves of the pipeline connected to the flushing tube inside the heavy medium separator are changed or the pumps and valves are changed, the density detected by the density control mechanism 4 may deviate greatly from the actual value. When the density value detected by the density control mechanism 4 deviates greatly from the actual density value, the density display in the density control mechanism 4 needs to be calibrated so that the density control system can make correct adjustments to the density.

[0071] It can be seen that in this embodiment, the adjusting device 5 adjusts the density of the heavy medium suspension according to the result of comparing the density of the heavy medium suspension detected by the density control mechanism 4 with the preset density range, and transports the adjusted heavy medium suspension to the medium barrel 3, and the adjusting device 5 and the density control mechanism 4 are both real-time detection and real-time adjustment, which effectively ensures that the density of the heavy medium suspension in the heavy medium separator can meet the requirements in real time, thereby effectively ensuring the separation of metal materials and improving the sorting efficiency and quality of aluminum.

[0072] In specific implementation, the sorting system can be equipped with a central control room to facilitate the control of material sorting. In particular, the density control system can be automatically controlled by the central control room to ensure continuous and stable production. Each device in the sorting system can be controlled on-site or remotely. A touch screen control system can be installed in the central control room for easy operation.

[0073] In specific implementation, when the medium barrel 3 is supplied to the corresponding heavy medium separator, the heavy medium suspension therein is extracted through the qualified medium pump. In order to ensure an effective production cycle and stable production, two qualified medium pumps are set, with one main and one backup.

[0074] During specific implementation, the sorting system can be installed with an on-site actual production imaging system according to actual conditions. In addition, alarm switches are installed on-site and in the central control room to achieve safe production.

[0075] During specific implementation, the sorting system uses a three-phase grid voltage of 380VAC and a total system power of 350KW.

[0076] To sum up, in this embodiment, the iron and non-metal in the material are first removed, and the remaining metal material is used to separate the aluminum by utilizing its own different density, which can effectively improve the sorting quality and ensure the purity of the sorted aluminum. In addition, the aluminum can be sorted out by the first sorting device 1 and the second sorting device 2 without manual sorting, which is simple and convenient, improves the sorting efficiency, and greatly reduces the labor intensity of the staff.

[0077] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A sorting system, characterized in that: include: A first sorting device (1) is used to receive the material and remove the iron and non-metal contained in the material, and output the remaining metal material; A second sorting device (2) is connected to the first sorting device (1), and is used to receive the metal material, and use the density of each metal in the metal material to separate the aluminum and other metals in the metal material and output them separately; a drying device, connected to the second separation device (2), for receiving and drying the separated aluminum; The first sorting device (1) comprises: A screening device (11), used for receiving the material and screening out material with a preset particle size; A magnetic separation mechanism (12), connected to the screening device (11), for removing iron from materials with a preset particle size; A separation mechanism (13) connected to both the magnetic separation mechanism (12) and the second separation device (2), and used to remove non-metallic materials from the material after iron is removed, and to transport the remaining metal materials to the second separation device (2); The second sorting device (2) comprises: A desludging mechanism (21), connected to the first sorting device (1), and used for receiving the metal material and desludging the metal material; A first heavy medium separator (22) is connected to the desludging mechanism (21), wherein a heavy medium suspension of a first preset density is stored therein, and is used to separate metals less than the first preset density and metals greater than the first preset density in the desludging metal material by utilizing the difference in density between the heavy medium suspension of the first preset density and each metal in the metal material, and to separate and output the metals respectively; in the first heavy medium separator (22), metals greater than the first preset density of the heavy medium suspension sink, and metals less than the first preset density of the heavy medium suspension float; A second heavy medium separator (23) is connected to the first heavy medium separator (22), wherein a heavy medium suspension of a second preset density is stored therein, and is used to receive metals greater than the first preset density, separate the metals by utilizing the difference in density between the heavy medium suspension of the second preset density and the metals, and separate aluminum less than the second preset density and metals greater than the second preset density and output them separately; in the second heavy medium separator (23), metals greater than the second preset density of the heavy medium suspension sink, and aluminum less than the second preset density of the heavy medium suspension floats; The drying device is connected to the second heavy medium separator (23) to receive and dry the separated aluminum; A cleaning device (24) is provided between the first heavy medium separator (22) and the second heavy medium separator (23) to clean the separated metal having a density greater than a first preset density; and / or, A cleaning device (24) is provided between the second heavy medium separator (23) and the drying device to clean the separated aluminum.

2. The sorting system according to claim 1, characterized in that: The magnetic separation mechanism (12) comprises: a first vibrating feeder connected to the screening device and used to evenly distribute materials of a preset particle size; A first magnetic separation device (121), connected to the first vibrating feeder, is used to separate iron and iron-attached aluminum from materials with a preset particle size, and output the separated iron and iron-attached aluminum; a second vibrating feeder connected to the first magnetic separation device (121) and used to evenly distribute the material after the iron and iron-band aluminum are removed; The second magnetic separation device (122) is connected to the second vibrating feeder and the sorting mechanism (13), and is used to separate the aluminum-iron strip from the material after the iron and iron-iron strip are removed, output the separated aluminum-iron strip, and transport the remaining material to the sorting mechanism (13).

3. The sorting system according to claim 1, characterized in that: The sorting mechanism (13) comprises: a third vibrating feeder connected to the magnetic separation mechanism and used to evenly distribute the material after iron removal; The eddy current separator (131) is connected to the third vibrating feeder and the second separator (2), and is used to remove non-metals from the material after iron is removed, and to transport the remaining metal material after the non-metals are removed to the second separator (2).

4. The sorting system according to any one of claims 1 to 3, characterized in that: There are two first sorting devices (1), and the two first sorting devices (1) are arranged in parallel and are both connected to the second sorting device (1).

5. The sorting system according to claim 1, characterized in that: The desludging mechanism (21) comprises: a desliming screen (211), connected to the first separation device (1) and the first heavy medium separator (22), and used for receiving the metal material, desliming the metal material, evenly distributing the metal material, and conveying the deslimed metal material to the first heavy medium separator (22); A water washing device is connected to the desludging screen (211) and is used to spray water to wash the metal material.

6. The sorting system according to claim 1 or 5, characterized in that: The second sorting device (2) further comprises: Two density control systems are respectively connected to the first heavy medium separator (22) and the second heavy medium separator (23) in a one-to-one correspondence, and are used to adjust the density of the heavy medium suspension.

7. The sorting system according to claim 6, characterized in that: Each of the density control systems comprises: A medium barrel (3) for storing a heavy medium suspension, wherein an outlet of the medium barrel (3) is connected to a corresponding heavy medium separator via a first pipeline so as to transport the heavy medium suspension to the corresponding heavy medium separator; A density control mechanism (4) is arranged on the first pipeline and is used to detect the density of the heavy medium suspension and compare the detected density of the heavy medium suspension with a preset density range; The regulating device (5) is connected to the regulating device (5) through a second pipe at the outlet of the medium barrel (3). The regulating device (5) is also connected to the inlet of the medium barrel (3) and the density control mechanism (4). The density control mechanism (4) is also used to control the regulating device (5) to adjust the density of the heavy medium suspension according to the comparison result, and to transport the adjusted heavy medium suspension to the medium barrel (3).

8. The sorting system according to claim 7, characterized in that: The regulating device (5) comprises: A separation device (51) is connected to the second pipeline and is used to separate the first density solution and the second density solution in the heavy medium suspension; the separation device (51) is also connected to the inlet of the medium barrel (3) to transport the separated first density solution to the medium barrel (3); wherein the heavy medium suspension comprises the first density solution and the second density solution; The regulating mechanism is connected to the separation device (51), the inlet of the medium barrel (3) and the density control mechanism (4), and is used to receive the separated second density solution; the density control mechanism (4) is also used to control the regulating mechanism to adjust the density of the second density solution according to the comparison result, and to transport the adjusted solution to the medium barrel (3).

9. The sorting system according to claim 8, characterized in that: The regulating mechanism comprises: A flow dividing device (52), wherein a first inlet of the flow dividing device (52) is connected to the separation device (51) to receive the second density solution; a first outlet of the flow dividing device (52) is connected to the inlet of the medium barrel (3); the density control mechanism (4) is also connected to the flow dividing device (52) and is used to control the flow dividing device (52) to transport the second density solution to the medium barrel (3) when the density of the heavy medium suspension meets a preset density range; The second outlet of the diverter device (52) is connected to the inlet of the medium barrel (3) through the diverter device (53); the density control mechanism (4) is further used to control the diverter device (52) to transport the second density solution to the diverter device (53) when the density of the heavy medium suspension is less than a preset density range; the diverter device (53) is used to concentrate the second density solution and transport the concentrated solution to the medium barrel (3); A clean water delivery device (54), wherein the second inlet of the diverter device (52) is connected to the clean water delivery device (54), and the clean water delivery device (54) is connected to the density control mechanism (4). The density control mechanism (4) is used to control the clean water delivery device (54) to deliver clean water to the medium barrel (3) through the diverter device (52) when the density of the heavy medium suspension is greater than a preset density range.

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