CN220738583U - Multi-material sorting system - Google Patents

Abstract

The utility model discloses a multi-material sorting system. Wherein, this multi-material sorting system includes: the conveying device is used for conveying the materials to be sorted to the spraying position in a single layer by adopting a preset conveying speed; the detection equipment is respectively connected with the first electromagnetic valve and the second electromagnetic valve, and is used for detecting materials to be sorted and sending a blowing signal to the blowing mechanism; and the blowing mechanism is used for responding to a blowing signal, opening the first electromagnetic valve and/or the second electromagnetic valve, and blowing the material to be separated through the first nozzle and/or the second nozzle, so that the material to be separated enters a corresponding chute included in the separation chute. The utility model solves the technical problem of non-ideal separation efficiency in the related technology.

Description

Multi-material sorting system

Technical Field

The utility model relates to the technical field of sorting, in particular to a multi-material sorting system.

Background

Because the size and shape of the materials to be sorted are different, the required blowing force is also different according to different granularity ranges of the materials, and the configuration of the blowing mechanism for blowing the materials is different. In the related art, the limitation of the nozzle setting mode is high, and the preset jetting parameters are not matched with the granularity of the materials to be sorted, so that the problem of easy sorting mismatch is caused.

In view of the above problems, no effective solution has been proposed at present.

Disclosure of Invention

The embodiment of the utility model provides a multi-material sorting system, which at least solves the technical problem of non-ideal sorting efficiency in the related technology.

According to one aspect of an embodiment of the present utility model, there is provided a multi-material sorting system comprising: -a conveying device (10), -a detection device (20), -a blowing mechanism (30), -a sorting chute (40), -the blowing mechanism (30) comprising a first nozzle (301), -a second nozzle (302), -a first solenoid valve (303) connected to the first nozzle (301), and-a second solenoid valve (304) connected to the second nozzle (302), -the flow parameters of the first solenoid valve (303) and the second solenoid valve (304) are respectively positively correlated to the upper limit of the particle size range of the material to be sorted, and-the flow parameters of the first solenoid valve (303) are larger than the flow parameters of the second solenoid valve (304), -the inner diameter of the first nozzle (301) is larger than the inner diameter of the second nozzle (302), wherein the conveying device (10) is adapted to convey the material to be sorted to a blowing position in a monolayer with a predetermined conveying speed, wherein the blowing position is arranged at the end of the conveying device (10) close to the sorting chute (40); the detection equipment (20) is arranged above the conveying equipment (10), is respectively connected with the first electromagnetic valve (303) and the second electromagnetic valve (304), and is used for detecting the materials to be sorted and sending a blowing signal to the blowing mechanism (30); the blowing mechanism (30) is arranged at the blowing position and is used for responding to the blowing signal, opening the first electromagnetic valve (303) and/or the second electromagnetic valve (304), and blowing the material to be separated through the first nozzle (301) and/or the second nozzle (302), so that the material to be separated enters a corresponding chute included in the separation chute (40).

Optionally, the sorting chute (40) includes a first chute (401), a second chute (402) and a third chute (403), the first chute (401) being a chute of the sorting chute (40) close to the blowing position, the third chute (403) being a chute of the sorting chute (40) distant from the blowing position, the second chute (402) being arranged between the first chute (401) and the third chute (403), the first chute (401) being for receiving material that is not blown, the second chute (402) being for receiving material that is blown by the second nozzle (302), the third chute (403) being for receiving material that is blown by the first nozzle (301) and the second nozzle (302).

Optionally, the particle size range of the material to be sorted is 50mm-300mm, the flow parameter setting range of the first electromagnetic valve (303) is 3.5-5, and the flow parameter setting range of the second electromagnetic valve (304) is 1-2.

Optionally, the particle size range of the materials to be sorted is 25mm-100mm, the flow parameter setting range of the first electromagnetic valve (303) is 1-2, and the flow parameter setting range of the second electromagnetic valve (304) is 0.4-0.7.

Optionally, the particle size range of the material to be sorted is 10mm-50mm, the flow parameter setting range of the first electromagnetic valve (303) is 0.4-0.7, and the flow parameter setting range of the second electromagnetic valve (304) is 0.1-0.2.

Optionally, the blowing mechanism (30) further comprises a first air supply system (307) and a second air supply system (308), the first nozzle (301) sequentially passes through the first electromagnetic valve (303), a first pressure reducing valve (305) is connected with the first air supply system (307), the second nozzle (302) sequentially passes through the second electromagnetic valve (304), a second pressure reducing valve (306) is connected with the second air supply system (308), wherein the first pressure reducing valve (305) is used for controlling the air supply pressure supported by the first air supply system (307) so that the adjustable pressure range of the first nozzle (301) is 0.8-1.0 MPa; the second pressure reducing valve (306) is used for controlling the air supply pressure supported by the second air supply system (308) so that the adjustable pressure of the second nozzle (302) ranges from 0.5MPa to 0.8MPa.

Optionally, the conveying device (10) is a conveyor belt, and the adjustable speed of the belt speed of the conveyor belt is in the range of 1.5m/s-3.0m/s.

Optionally, the blowing mechanism (30) is disposed below the conveying device at the blowing position, and the first nozzle (301) and the second nozzle (302) included in the blowing mechanism (30) are blown upward at predetermined inclination angles, respectively.

Optionally, the first nozzles (301) are multiple, the second nozzles (302) are multiple, the first nozzles (301) respectively correspond to the first electromagnetic valves (303), the second nozzles (302) respectively correspond to the second electromagnetic valves (304), the first nozzles (301) are arranged side by side, and the second nozzles (302) are arranged side by side.

Optionally, the detection device (20) is at least any one of: an X-ray detector, a color selector and a laser scanner.

In the embodiment of the utility model, the aim of reducing sorting mismatch by using the arrangement combination of the nozzle and the electromagnetic valve is achieved, so that the technical effect of improving the efficiency of the sorting machine is realized, and the technical problem of non-ideal sorting efficiency in the related technology is solved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

FIG. 1 is a schematic diagram of an alternative multi-material sorting system according to an embodiment of the present utility model;

FIG. 2 is a schematic illustration of an alternative blowing mechanism of a multiple material sorting system according to an embodiment of the present utility model;

FIG. 3 is a top view of an alternative multiple material sorting system according to an embodiment of the present utility model; the method comprises the steps of,

FIG. 4 is a schematic diagram of another alternative multiple material sorting system according to an embodiment of the present utility model.

Detailed Description

In order that those skilled in the art will better understand the present utility model, a technical solution in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs unless otherwise indicated.

In the present utility model, unless otherwise indicated, terms of orientation such as "upper, lower, top, bottom" are used generally with respect to the orientation shown in the drawings or with respect to the component itself in the vertical, upright or gravitational direction; also, for ease of understanding and description, "inner and outer" refers to inner and outer relative to the profile of each component itself, but the above-mentioned orientation terms are not intended to limit the present utility model.

FIG. 1 is an alternative multiple material sorting system according to an embodiment of the present utility model, as shown in FIG. 1, comprising: the conveying device 10, the detecting device 20, the blowing mechanism 30 and the sorting chute 40, wherein the blowing mechanism 30 comprises a first nozzle 301, a second nozzle 302, a first electromagnetic valve 303 connected with the first nozzle 301 and a second electromagnetic valve 304 connected with the second nozzle 302, flow parameters of the first electromagnetic valve 303 and the second electromagnetic valve 304 are respectively positively correlated with the upper limit of the grain size range of the materials to be sorted, the flow parameters of the first electromagnetic valve 303 are larger than those of the second electromagnetic valve 304, the inner diameter of the first nozzle 301 is larger than that of the second nozzle 302,

the conveying device 10 is configured to convey the material to be sorted to a blowing position by using a single layer at a predetermined conveying speed, where the blowing position is disposed at an end of the conveying device 10 near the sorting chute 40;

the detecting device 20 is disposed above the conveying device 10, connected to the first electromagnetic valve 303 and the second electromagnetic valve 304, and configured to detect the materials to be sorted, and send a blowing signal to the blowing mechanism 30;

the blowing mechanism 30 is disposed at the blowing position, and is configured to respond to the blowing signal, open the first electromagnetic valve 303 and/or the second electromagnetic valve 304, and perform blowing treatment on the material to be sorted through the first nozzle 301 and/or the second nozzle 302, so that the material to be sorted enters a corresponding chute included in the sorting chute 40.

In the embodiment of the utility model, the material to be sorted is conveyed to the blowing position by the conveying device 10 in a single-layer uniform speed mode at a preset conveying speed, and the detecting device 20 detects the material to be sorted from above the conveying device 10 towards the conveying device 10 in the conveying process and sends a blowing signal to the blowing mechanism 30. The blowing mechanism 30 includes a first nozzle 301, a second nozzle 302, a first electromagnetic valve 303, and a second electromagnetic valve 304, and in response to a received blowing signal, the blowing mechanism 30 opens the first electromagnetic valve 303 and/or the second electromagnetic valve 304, and since the first electromagnetic valve 303 and the second electromagnetic valve 304 are set to have the particle size ranges of the materials to be sorted up to be the positive relevant flow parameters, the configuration of the blowing mechanism 30 has good matching with the materials to be sorted, and the materials to be sorted are sorted to the corresponding chute included in the sorting chute 40 through the blowing treatment of the first nozzle 301 and/or the second nozzle 302.

It should be noted that, the manner in which the detection device 20 generates the injection signal is in the prior art, which is not the protection focus of the present utility model, the first electromagnetic valve 303, the second electromagnetic valve 304 in the injection mechanism 30 are electrically connected to the detection device 20, the opening and closing of the electromagnetic valves are directly triggered by the injection signal,

as shown in fig. 1, according to an embodiment of the present utility model, the classifying chute 40 includes a first chute 401, a second chute 402, and a third chute 403, wherein the first chute 401 is a chute of the classifying chute 40 near the blowing position, the third chute 403 is a chute of the classifying chute 40 far from the blowing position, the second chute 402 is disposed between the first chute 401 and the third chute 403, the first chute 401 is for receiving material that is not blown, the second chute 402 is for receiving material that is blown by the second nozzle 302, and the third chute 403 is for receiving material that is blown by the first nozzle 301 and the second nozzle 302.

In embodiments of the present utility model, the sort chute 40 may comprise a plurality of chutes, it being understood that the material to be sorted may be of a plurality of categories, different categories requiring entry into different chutes for sorting, the material to be sorted may comprise cleaned coal material, middlings, gangue material, etc. The first chute 401 may be considered to be the chute of the sort chute 40 closest to the blowing location for receiving non-blown material that would fall directly from the conveyor 10 into the first chute 401. The second chute 402 may be considered an intermediate chute of the sort chute 40 for receiving material blown by the second nozzle 302. The third chute 403 is the chute furthest from the blowing location for receiving material blown by the first and second nozzles 301, 302. By the arrangement, the multi-material system can realize that three types of materials can be separated through the first chute 401, the second chute 402 and the third chute 403.

Alternatively, the first chute 401 and the second chute 402 may be divided by a first dividing plate, and the second chute 402 and the third chute 403 may be divided by a second dividing plate.

As shown in fig. 1, according to the embodiment of the present utility model, the particle size of the material to be sorted ranges from 50mm to 300mm, the flow parameter setting range of the first electromagnetic valve 303 ranges from 3.5 to 5, and the flow parameter setting range of the second electromagnetic valve 304 ranges from 1 to 2.

In the embodiment of the utility model, according to the grain size range of the materials to be sorted being 50mm-300mm (millimeters), the upper limit of the grain size range is 300mm, the first electromagnetic valve 303 and the second electromagnetic valve 304 in the blowing mechanism are arranged in a matched mode, the flow parameter setting range of the first electromagnetic valve 303 is preferably 3.5-5, and the flow parameter setting range of the second electromagnetic valve 304 is preferably 1-2.

The flow rate parameter is a CV value (Coefficient of Flow Value) and is a dimensionless parameter. The flow parameter is calculated according to the flow and the pressure difference under the standard test condition and is used for describing the flow characteristic of the electromagnetic valve. The larger the CV value, the greater the flow capacity of the corresponding solenoid valve.

As shown in fig. 1, according to the embodiment of the present utility model, the particle size of the material to be sorted ranges from 25mm to 100mm, the flow parameter setting range of the first electromagnetic valve 303 ranges from 1 to 2, and the flow parameter setting range of the second electromagnetic valve 304 ranges from 0.4 to 0.7.

In the embodiment of the present utility model, according to the particle size range of the material to be sorted being 25mm-100mm, it can be understood that the upper limit of the particle size range is 100mm, the flow parameter setting range of the first electromagnetic valve 303 is preferably 1-2, and the flow parameter setting range of the second electromagnetic valve 304 is preferably 0.4-0.7.

As shown in fig. 1, according to the embodiment of the present utility model, the particle size of the material to be sorted ranges from 10mm to 50mm, the flow parameter setting range of the first electromagnetic valve 303 ranges from 0.4 to 0.7, and the flow parameter setting range of the second electromagnetic valve 304 ranges from 0.1 to 0.2.

In the embodiment of the present utility model, according to the particle size range of the material to be sorted being 10mm-50mm, it can be understood that the upper limit of the particle size range is 50mm, the flow parameter setting range of the first electromagnetic valve 303 is preferably 0.4-0.7, and the flow parameter setting range of the second electromagnetic valve 304 is preferably 0.1-0.2.

Fig. 2 is a schematic diagram of a blowing mechanism of an alternative multi-material sorting system according to an embodiment of the present utility model, as shown in fig. 2, the blowing mechanism 30 further includes a first air supply system 307 and a second air supply system 308, the first nozzle 301 sequentially passes through the first solenoid valve 303, a first pressure reducing valve 305 is connected to the first air supply system 307, the second nozzle 302 sequentially passes through the second solenoid valve 304, and a second pressure reducing valve 306 is connected to the second air supply system 308, wherein the first pressure reducing valve 305 is used for controlling an air supply pressure supported by the first air supply system 307 such that an adjustable pressure range of the first nozzle 301 is 0.8MPa to 1.0MPa; the second pressure reducing valve 306 is used to control the air supply pressure supported by the second air supply system 308 such that the adjustable pressure of the second nozzle 302 ranges from 0.5MPa to 0.8MPa.

In the embodiment of the present utility model, the blowing mechanism 30 further includes a first air supply system 305 and a second air supply system 306, and the electromagnetic valve performs an opening and closing function, and the pressure reducing valve is a device for controlling the pressure of the fluid, so that the high-pressure fluid can be reduced to a required low-pressure level through the pressure reducing valve to meet the requirements of the system. The first nozzle 301 sequentially passes through the first electromagnetic valve 303, the first pressure reducing valve 307 is connected with the first air supply system 305, and the first nozzle 301 and the first electromagnetic valve 303 can be effectively protected by the first pressure reducing valve 307 to avoid being damaged by excessive pressure in the first air supply system 305. Similarly, the second nozzle 302 is connected to a second air supply system 306 via a second solenoid valve 304 and a second pressure reducing valve 308. The first nozzle 301 and the second nozzle 302 are respectively and independently supplied with air, the first nozzle 301 preferably has an adjustable pressure ranging from 0.8MPa to 1.0MPa, and the second nozzle 302 preferably has an adjustable pressure ranging from 0.5MPa to 8MPa.

Optionally, the pressure relief valve is comprised of an adjustable valve element and a spring. When fluid flows through the pressure reducing valve, the valve core can adjust the opening degree of the valve according to the set pressure value, so that the pressure of the fluid passing through the valve is kept within a preset range. When the fluid pressure exceeds the set pressure value, the pressure reducing valve is automatically opened to release the redundant pressure, so that the stable operation of the system is maintained. Pressure reducing valves are widely used in various industrial fields for controlling fluid pressure, protecting equipment from high pressure, and providing stable working environment and fluid flow.

Alternatively, the first air supply system 305 and the second air supply system 306 may be air supply lines, respectively, and are connected to other air supply systems outside the blowing mechanism 30.

As shown in fig. 1, the conveying apparatus 10 is a conveyor belt, and the belt speed of the conveyor belt can be adjusted to a speed in the range of 1.5m/s to 3.0m/s.

In the embodiment of the present utility model, the conveying device 10 may be a conveyor belt, and the speed of the conveyor belt is set in cooperation with the flow parameters of the first electromagnetic valve 303 and the flow parameters of the second electromagnetic valve 304, because the belt speed of the conveyor belt determines the retention time of the materials to be sorted conveyed at the blowing position, which affects the blowing stress time, and the belt speed may be preferably set to 1.5m/s-3.0m/s (meters per second).

As shown in fig. 1, according to an embodiment of the present utility model, the blowing mechanism 30 is disposed below the conveying apparatus at the blowing position, and the first nozzle 301 and the second nozzle 302 included in the blowing mechanism 30 are blown upward at predetermined inclinations, respectively.

In the embodiment of the present utility model, the blowing mechanism 30 is provided with a lower nozzle, and the first nozzle 301 and the second nozzle 302 included in the lower nozzle are blown upward from below the conveying device at the blowing position with a predetermined inclination angle. Because the horizontal displacement time length and the vertical displacement time length of the materials to be sorted are equal, the adoption of the lower nozzle can enable the sprayed materials to be sorted to travel farther in the horizontal direction, and the separation degree between different types of materials is increased.

Fig. 3 is a top view of an alternative multi-material sorting system according to an embodiment of the present utility model, as shown in fig. 3, the first nozzles 301 are plural, the second nozzles 302 are plural, the first nozzles 301 respectively correspond to the first solenoid valves 303, the second nozzles 302 respectively correspond to the second solenoid valves 304, the first nozzles 301 are arranged side by side, and the second nozzles 302 are arranged side by side.

In the embodiment of the present utility model, each first nozzle 301 corresponds to a respective first solenoid valve 303, each second nozzle 302 corresponds to a respective second solenoid valve 304, and the plurality of first nozzles 301 are arranged side by side, and the plurality of second nozzles 302 are also arranged side by side, which means that the row spacing between the two rows of nozzles is small, and the difference in blowing angle is negligible. By adopting the arrangement mode, the uniform forced blowing treatment on the materials to be sorted can be ensured, so that the blowing effect is not affected by the distribution of the materials to be sorted on the conveying equipment 10.

According to an embodiment of the present utility model, the detection device 20 is at least any one of the following: an X-ray detector, a color selector and a laser scanner.

In the embodiment of the present utility model, the detection device 20 may be one or more of an X-ray detector, a color sorter, and a laser scanner, so as to improve the sorting efficiency and accuracy of the materials to be sorted. The X-ray detector can be used for detecting density and composition differences of materials to be sorted through X-ray scanning, so that whether non-combustion substances such as ores and stones are contained in the objects to be sorted or not can be judged. The color selector can utilize photoelectric sensors and computer vision technology to identify and sort the colors and shapes of the materials to be sorted, and separate the materials with specific colors or shapes, such as gangue. The laser scanner can scan the materials to be sorted through the laser beam, measure the geometric shape and the size of the materials, and sort the materials according to preset parameters.

Alternatively, the above-mentioned detecting device 20 may also be a camera and an image processing system, which are used to take a photograph of the objects to be sorted in real time by the camera, and analyze and process the image by the image processing system, so as to identify the impurities therein, such as stones, mud blocks, etc.

From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects: the purpose of utilizing the setting combination of the nozzle and the electromagnetic valve to further reduce sorting mismatch is achieved, so that the technical effect of improving the efficiency of the sorting machine is achieved, and the technical problem of non-ideal sorting efficiency in the related technology is solved.

It should be noted that the specific configuration of the multi-material sorting system shown in fig. 1 to 3 in the present application is merely illustrative, and the multi-material sorting system in the present application may have more or less configurations than the multi-material sorting system shown in fig. 1 to 3 in the specific application.

According to the present utility model, a preferred embodiment is provided. Fig. 4 is a schematic diagram of another alternative multi-material sorting system according to an embodiment of the present utility model, as shown in fig. 4, the conveyor apparatus 10, the detection apparatus 20, the blowing mechanism 30, the first nozzle 301, the first solenoid valve 303, the first pressure reducing valve 305, the first air supply system 307, the second nozzle 302, the second solenoid valve 304, the second pressure reducing valve 306, the second air supply system 308, the sorting chute 40, the first chute 401, the second chute 402, and the third chute 403.

The materials to be sorted are marked in a solid circle in fig. 4, the particle size of the materials is in the range of 50-300mm, and the materials comprise various different materials such as clean coal, middling coal, gangue and the like, and the materials need to be correspondingly sorted into a first chute 401, a second chute 402 and a third chute 403. The conveying speed can be controlled between 1.5m/s and 3.0m/s by the conveying device 10, the material to be sorted is moved towards one end of the blowing position at a constant speed by a single layer, and the detecting device 20 detects the material to be sorted and sends a blowing signal to the blowing mechanism 30 when the material to be sorted moves to the area below the detecting device 20.

The blowing mechanism 30 includes a first nozzle 301, a first solenoid valve 303, a first pressure reducing valve 305, a first air supply system 307, and a second nozzle 302, a second solenoid valve 304, a second pressure reducing valve 306, and a second air supply system 308, which are sequentially connected. The flow parameter Cv of the first electromagnetic valve 303 is set to be 3.5-5, the flow parameter Cv of the second electromagnetic valve 304 is set to be 1-2, the adjustable air supply pressure of the first nozzle 301 is set to be 0.8MPa-1.0MPa through adjustment of the first pressure reducing valve 305, and the adjustable air supply pressure of the second nozzle 302 is set to be 0.5MPa-0.8MPa through adjustment of the second pressure reducing valve 306. The blowing mechanism 30 responds to the blowing signal to open the first electromagnetic valve 303 and/or the second electromagnetic valve 304, and the first air supply system 307 and the second air supply system 308 supply air to output, so that the first nozzle 301 and/or the second nozzle 302 blow the material to be sorted reaching the blowing position, and the material to be sorted enters the sorting chute 40. The first chute 401 is used for receiving the material which is not sprayed and processed, the second chute 402 is used for receiving the material sprayed by the second nozzle 302, and the third chute 403 is used for receiving the material sprayed by the first nozzle 301 and the second nozzle 302 at the same time.

According to the preferred embodiment provided by the utility model, the combined configuration of the nozzle, the electromagnetic valve, the pressure reducing valve and the air supply system which are included in the blowing mechanism 30 can be realized, so that the sorting accuracy of the materials to be sorted is improved.

The foregoing embodiment numbers of the present utility model are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.

In the foregoing embodiments of the present utility model, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.

While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the utility model, and such changes and modifications are intended to be included within the scope of the utility model.

Claims (10)

1. A multiple material sorting system, comprising: a conveying device (10), a detection device (20), a blowing mechanism (30) and a sorting chute (40), wherein the blowing mechanism (30) comprises a first nozzle (301), a second nozzle (302), a first electromagnetic valve (303) connected with the first nozzle (301) and a second electromagnetic valve (304) connected with the second nozzle (302), flow parameters of the first electromagnetic valve (303) and the second electromagnetic valve (304) are respectively positively correlated with the upper limit of the grain size range of materials to be sorted, the flow parameters of the first electromagnetic valve (303) are larger than the flow parameters of the second electromagnetic valve (304), the inner diameter of the first nozzle (301) is larger than the inner diameter of the second nozzle (302), wherein,

the conveying equipment (10) is used for conveying the materials to be sorted to a blowing position in a single layer at a preset conveying speed, wherein the blowing position is arranged at one end, close to the sorting chute (40), of the conveying equipment (10);

the detection equipment (20) is arranged above the conveying equipment (10), is respectively connected with the first electromagnetic valve (303) and the second electromagnetic valve (304), and is used for detecting the materials to be sorted and sending a blowing signal to the blowing mechanism (30);

the blowing mechanism (30) is arranged at the blowing position and is used for responding to the blowing signal, opening the first electromagnetic valve (303) and/or the second electromagnetic valve (304), and blowing the material to be separated through the first nozzle (301) and/or the second nozzle (302), so that the material to be separated enters a corresponding chute included in the separation chute (40).

2. The multiple material sorting system according to claim 1, characterized in that the sorting channels (40) comprise a first channel (401), a second channel (402) and a third channel (403), the first channel (401) being a channel of the sorting channels (40) close to the blowing position, the third channel (403) being a channel of the sorting channels (40) remote from the blowing position, the second channel (402) being arranged between the first channel (401) and the third channel (403), the first channel (401) being adapted to receive material that is not blown, the second channel (402) being adapted to receive material that is blown by the second nozzle (302), the third channel (403) being adapted to receive material that is blown by the first nozzle (301) and the second nozzle (302).

3. A multiple material sorting system according to claim 1, characterized in that the particle size of the material to be sorted is in the range of 50-300mm, the flow parameter setting of the first solenoid valve (303) is in the range of 3.5-5, and the flow parameter setting of the flow parameter of the second solenoid valve (304) is in the range of 1-2.

4. A multiple material sorting system according to claim 1, characterized in that the particle size of the material to be sorted is in the range of 25-100 mm, the flow parameter setting of the first solenoid valve (303) is in the range of 1-2, and the flow parameter setting of the flow parameter of the second solenoid valve (304) is in the range of 0.4-0.7.

5. A multiple material sorting system according to claim 1, characterized in that the particle size of the material to be sorted is in the range of 10mm-50mm, the flow parameter setting of the first solenoid valve (303) is in the range of 0.4-0.7, and the flow parameter setting of the flow parameter of the second solenoid valve (304) is in the range of 0.1-0.2.

6. The multiple material sorting system according to claim 1, wherein the blowing mechanism (30) further comprises a first air supply system (307) and a second air supply system (308), the first nozzle (301) is connected to the first air supply system (307) sequentially through the first solenoid valve (303), a first pressure reducing valve (305), the second nozzle (302) is connected to the second air supply system (308) sequentially through the second solenoid valve (304), wherein,

the first pressure reducing valve (305) is used for controlling the air supply pressure supported by the first air supply system (307) so that the adjustable pressure of the first nozzle (301) ranges from 0.8MPa to 1.0MPa;

the second pressure reducing valve (306) is used for controlling the air supply pressure supported by the second air supply system (308) so that the adjustable pressure of the second nozzle (302) ranges from 0.5MPa to 0.8MPa.

7. A multiple material sorting system according to claim 1, characterized in that the conveying device (10) is a conveyor belt, the belt speed of which is adjustable in the speed range of 1.5m/s-3.0m/s.

8. The multiple material sorting system according to any one of claims 1 to 7, wherein the blowing mechanism (30) is disposed below the conveying apparatus at the blowing position, the blowing mechanism (30) including the first nozzle (301) and the second nozzle (302) that blow upward at predetermined inclinations, respectively.

9. The multiple material sorting system as claimed in any one of claims 1 to 7, wherein the first nozzles (301) are plural, the second nozzles (302) are plural, the plural first nozzles (301) correspond to the first solenoid valves (303) respectively, the plural second nozzles (302) correspond to the second solenoid valves (304) respectively, the plural first nozzles (301) are arranged side by side, and the plural second nozzles (302) are arranged side by side.

10. The multiple material sorting system according to any one of claims 1 to 7, characterized in that the detection device (20) is at least any one of: an X-ray detector, a color selector and a laser scanner.