WO2023202258A1

WO2023202258A1 - Material sorting system and method

Info

Publication number: WO2023202258A1
Application number: PCT/CN2023/080754
Authority: WO
Inventors: 李元景; 孙尚民; 宗春光; 张俊斌; 刘磊; 刘必成; 喻卫丰
Original assignee: 同方威视技术股份有限公司; 同方威视科技江苏有限公司
Priority date: 2022-04-19
Filing date: 2023-03-10
Publication date: 2023-10-26
Also published as: CN114798452A

Abstract

The present application provides a material sorting system and method. The material sorting system comprises: a material distribution device used for conveying materials; an identification device used for identifying material information of the materials on the material distribution device; a sorting device used for sorting the materials according to the material information, the sorting device comprising at least one spray valve located on below a mineral movement trajectory and used for blowing the materials; a material receiving device comprising at least two chutes and used for accommodating at least two types of materials after sorting; and an auxiliary sorting device which is arranged above the at least two chutes and is used for conveying materials falling on the auxiliary sorting device into the chute on the side distant from the material distribution device among the corresponding at least two chutes.

Description

Material sorting system and sorting method

Cross-references to related applications

This invention claims the priority of the Chinese patent application with the application number 202210413443.8 and the invention title "A material sorting system and sorting method" submitted to the State Intellectual Property Office of China on April 19, 2022, the entire content of which is incorporated by reference. incorporated in this application.

Technical field

This application generally relates to the technical field of material sorting, and specifically relates to a material sorting system and a sorting method.

Background technique

As dry coal separation receives more and more attention, intelligent dry separation technology has emerged. It is an intelligent automatic separation technology based on rays, spectral analysis or image recognition of coal gangue. Intelligent dry selection technology has the advantages of no water use, simple process, low investment and low production cost.

When the existing technology is sorting three products, such as high-grade minerals, medium-grade minerals and low-grade minerals, different types of minerals are sprayed through air nozzles with different blowing strengths for sorting. In order to improve the accuracy, the sprays need to be separated. The difference between the blowing force settings is obvious. The greater the blowing pressure, the farther the ore moves. The corresponding second and third product chutes need to be very wide, resulting in a large structure of the sorting chamber, an increase in the length of the whole machine, and an area of area. large area.

In the existing technology, for example, Chinese patent application 201710082748.4 discloses a three-product intelligent dry sorting machine. By using different injection energies to inject materials, different types of materials enter different chutes to achieve three-product sorting. . Among them, the difference in injection energy is caused by selecting large-sized high-frequency solenoid valves and air nozzles, increasing or decreasing the number of high-frequency solenoid valves and air nozzles, increasing or decreasing the time for opening high-frequency solenoid valves and air nozzles, This can be achieved by increasing or decreasing the injection pressure in one or more ways.

However, when sorting materials of the same category, if the materials with different shapes or different qualities are sorted entirely by controlling the injection intensity, the probability of incorrect selection will be very high. In addition, during sorting, it is also necessary to control the blowing intensity accurately. When the performance of the blowing mechanism decreases or the air supply pressure fluctuates, it is easy for the blown materials to enter other sorting areas or product chutes, causing the materials to be misplaced. select.

Contents of the invention

In view of the above-mentioned defects or deficiencies in the prior art, it is desired to provide a material sorting system and a sorting method that can improve the sorting accuracy and reduce the floor space.

In the first aspect, this application provides a material sorting system, including:

Distribution device, used to transport materials;

An identification device used to identify the material information of the material on the distribution device;

A sorting device is used to sort materials according to the material information, the sorting device includes at least one spray valve located on the lower side of the movement trajectory of the mineral for blowing the material;

A material receiving device, including at least two chutes, used to accommodate at least two categories of materials after sorting;

An auxiliary sorting device, arranged above the at least two chutes, is used to transport the materials falling on the auxiliary sorting device to the chute on the side of the corresponding at least two chutes away from the distribution device. Inside.

Optionally, the spray valve includes a first spray valve and a second spray valve for sorting the materials into three categories, and the first spray valve is disposed near the second spray valve near the cloth side of the device.

Optionally, the first spray valve includes a plurality of first nozzles arranged in an array along the width direction of the distribution device, and the second spray valve includes a plurality of second nozzles arranged in an array along the width direction of the distribution device. nozzle.

Optionally, the injection pressure of the first nozzle is 0.5MPa~0.75MPa; the injection pressure of the second nozzle is 0.5MPa~0.75MPa.

Optionally, the material receiving device includes a No. 1 chute on a side close to the distribution device, a No. 2 chute in the middle position, and a No. 3 chute on a side away from the distribution device.

Optionally, the material receiving device includes a first partition for spacing the No. 1 chute and the No. 2 chute, and a second partition for spacing the No. 2 chute and the No. 3 chute. plate and a third partition located on one side of the No. 3 chute. The heights of the first partition, the second partition, and the third partition increase in sequence.

Optionally, the auxiliary sorting device is provided on the second partition, and the auxiliary sorting device is used to transport the materials falling on the auxiliary sorting device into the No. 3 chute, so The orthographic projection of the auxiliary sorting device on the horizontal plane partially overlaps the orthographic projection of the No. 2 chute on the horizontal plane.

Optionally, the auxiliary sorting device is a horizontally arranged conveyor belt, an inclined conveyor belt, One or a combination of multiple angled tilt skateboards.

Optionally, the auxiliary sorting device is arranged obliquely, and the auxiliary sorting device is inclined downward in a direction away from the distribution device.

In the second aspect, this application provides a material sorting method, using any of the systems described above, and the method includes:

During the material transportation process, the material information of the material on the distribution device is identified through the identification device;

When the material falls from the distribution device to the blowing position corresponding to the at least one spray valve, the sorting device controls the at least one spray valve to blow according to the material category corresponding to the material information. , sorting the materials into at least two categories.

The technical solutions provided by the embodiments of this application may include the following beneficial effects:

The mineral sorting system provided by the embodiment of the present application rationalizes the occupied area of each chute and rationalizes the structure of the sorting chamber by adding an auxiliary sorting device between the chutes and the chutes; the spray valve is arranged on the lower side of the mineral movement track to The minerals are sprayed so that the flight trajectory of the minerals first rises and then falls into the chute, thereby improving the sorting accuracy.

Description of the drawings

Other features, objects and advantages of the present application will become more apparent by reading the detailed description of the non-limiting embodiments with reference to the following drawings:

Figure 1 is a schematic structural diagram of a material sorting system provided by an embodiment of the present application;

Figure 2 is a top view of a material sorting system provided by an embodiment of the present application;

Figure 3 is a schematic diagram of the force exerted on the material when it is sprayed by the first spray valve and the second spray valve in the embodiment of the present application;

Figure 4 is a schematic structural diagram of a spray valve provided by an embodiment of the present application;

Figure 5 is a schematic structural diagram of another material sorting system provided by an embodiment of the present application;

Figure 6 is a flow chart of a material sorting method provided by an embodiment of the present application.

Detailed ways

The present application will be further described in detail below in conjunction with the accompanying drawings and examples. It can be understood that the specific embodiments described here are only used to explain the relevant invention, but not to limit the invention. It should also be noted that, for convenience of description, only the parts related to the invention are shown in the drawings.

It should be noted that, as long as there is no conflict, the embodiments and features in the embodiments of this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

Please see Figure 1-2 for details, a material sorting system including:

Distribution device 100 is used to transport materials;

The identification device 200 is used to identify the material information of the material on the distribution device;

The sorting device 300 is used to sort materials according to the material information. The sorting device includes at least one spray valve located on the lower side of the movement trajectory of the mineral for injecting the material;

The material receiving device 400 includes at least two chutes for accommodating at least two types of materials after sorting.

The auxiliary sorting device 500 is arranged above the at least two chutes and is used to transport the materials falling on the auxiliary sorting device to the corresponding at least two chutes on the side away from the distribution device. inside the chute.

In the embodiment of this application, the material sorting system can be used for mineral sorting, food sorting, garbage sorting, etc., and the material information of the materials to be sorted is identified through the identification device, and the materials are divided into multiple categories based on the material information. Different categories of materials are sorted through a sorting device; the sorting device in this application includes at least one spray valve, through which at least two categories of materials can be sorted. In this application, the elevation angle of the nozzle valve refers to the angle between the injection angle of the nozzle valve and the horizontal direction.

It should be noted that in the embodiment of the present application, materials can be divided into multiple categories based on material information. During specific classification, different categories may be divided according to different sorting requirements. Material categories can be classified according to shape and size, density, substance content, etc. This application is not limited to this.

For example, minerals can be divided into metallic minerals and non-metal minerals. Metal minerals include ferrous metals and non-ferrous metals; such as iron, manganese, chromium, etc.; non-ferrous metal ores such as copper, lead, zinc, aluminum, tin, molybdenum, and nickel. , antimony, tungsten, etc. Non-metallic minerals include most oxygen-containing salt minerals and some oxide and halide minerals, such as diamond, crystal, iceberg, boron, tourmaline, mica, topaz, corundum, graphite, gypsum, asbestos and fuel minerals, etc. .

When dividing categories, material categories include classification based on the type of metal contained, grade, chemical composition, etc. In the following examples of this application, mineral sorting is used as an example. Minerals are divided into three categories based on specific metal content, including high-grade minerals (specific metal The highest content), medium-grade minerals (the specific metal content is in the middle) and low-grade minerals (the specific metal content is the lowest). Further, in the following embodiments of the present application, the material sorting system includes two spray valves (the first spray valve 10 and the second spray valve 20), and the mineral products are divided into three categories (such as high-grade minerals, (medium-grade minerals and low-grade minerals) are taken as an example to illustrate.

In addition, based on the types of materials to be sorted and the categories of materials to be sorted, the identification devices used may also be different. In addition, different identification devices can also be used in combination.

For example, when classifying materials based on different shapes and sizes, an image recognition system can be used to classify material categories by identifying the shape information of the materials; for example, based on different types of metals, an X-ray system can be used to identify the metal components in the materials. Divide material categories; of course, you can also use X-ray systems to identify the shape of materials, etc. As for the identification method of material information, various known methods can be used, which will not be described in detail in this application.

When applied, the distribution device 100 may be one or a combination of a horizontally arranged conveyor belt, an inclined conveyor belt, an angled inclined sliding plate. Materials of different types and sizes are distributed along the length and width directions on the distribution device 100. Since the conveyor belt has a certain running speed, different materials are scattered on the conveyor belt and are transported to the end position through the conveyor belt. The conveyor belt is thrown out for a flat throwing motion.

It should be noted that in this embodiment, a horizontally arranged conveyor belt is used as an example. Of course, in other embodiments, different forms of distribution devices can be selected according to different application scenarios.

The identification device 200 may include: an image identification system and/or an X-ray system. Wherein, the X-ray system may consist of an X-ray source and an X-ray detector. The image recognition system can consist of a camera and a light source. The X-ray system can be used to obtain the type of material, and the image recognition system can be used to obtain the size and shape of the material. Of course, in other embodiments, an X-ray system can also be used to obtain the particle size of the material, or other identification devices 200 can be used to obtain the shape characteristics of the material, and this application is not limited thereto.

In this embodiment, the identification device 200 uses an X-ray system as an example for explanation. The X-ray system is used to identify the metal components in minerals and classify minerals into high-grade minerals, medium-grade minerals and low-grade minerals based on the different contents of metal components. For example, according to the iron content of the three types of materials, iron ore includes siderite, hematite and magnetite. The density of siderite is 3.8~3.9g/cm ³ and the density of hematite is 3.4~4.4 g/cm ³ , the density of magnetite is 4.9-5.2 g/cm ³ , and one or both of the three can be identified according to the identification device 200 (for example, the gray value of the X-ray image).

The shape of the mineral can also be identified through the X-ray system, so that the sorting device 300 can control the opening number of the nozzles on the spray valve according to the shape, projected area, etc. of the mineral. Materials of the same category with different shapes or areas can also be better sorted to improve sorting accuracy.

The sorting device 300 in the embodiment of this application is located on the lower side of the material movement trajectory. The material movement trajectory in this application refers to the movement trajectory of the material after it is thrown from the distribution device, and the movement trajectory is generally in the shape of a flat throw line. In this embodiment, by arranging the sorting device on the lower side of the movement trajectory, a blowing force can be applied to the material in the direction of movement, thereby reducing energy consumption and improving the impact of different blowing positions on the sorting accuracy. Sorting accuracy.

The sorting device 300 at least includes a first spray valve 10 and a second spray valve 20 for sorting at least three products. For example, five spray valves can be used to sort six categories of materials. When sorting, the injection pressure received by the material during sorting is different depending on the shape of the material.

Correspondingly, the material receiving device 400 includes three chutes to accommodate three types of materials. For example, the material receiving device 400 includes the No. 1 chute 1 on the side close to the distribution device 100, the No. 2 chute 2 in the middle position, and the No. 3 chute 3 on the side far away from the distribution device 100; wherein, the No. 1 chute 1 and the No. 2 chute 2 and No. 3 chute 3 accommodate one kind of sorting target respectively. For example, Chute No. 1 is used to accommodate siderite (the first category of material), Chute No. 2 is used to accommodate hematite (the second category of material), and Chute No. 3 is used to accommodate magnetite. (Third category materials).

In this embodiment, the first spray valve 10 is disposed above the second spray valve 20 , that is, on the side close to the distribution device 100 . The first injection valve 10 corresponds to the first injection position P1 on the movement trajectory of the mineral, which is higher than the second injection valve 20 corresponding to the second injection position P2 on the movement trajectory of the mineral; the first injection valve 10 is used to perform the first injection on the mineral. Sorting, the second spray valve 20 is used to sort the minerals for the second time.

When sorting, the materials include first category materials (siderite), second category materials (hematite) and third category materials (magnetite); the first spray valve 10 is used to separate the third category materials The material is sprayed so that the third category material enters the No. 3 chute 3; the second spray valve 20 is used to spray the second category material so that the second category material enters the No. 2 chute 2; it is not sprayed by the second spray valve 20 The first category of materials enters chute 1.

Specifically, when the material is moving, after passing the first blowing position P1, if it is recognized by the identification device 200 as a third category material, it will be sprayed by the first spray valve 10 and then enter the No. 3 chute 3, the third category. The material is sorted; if it is the remaining two types of minerals, it is not sprayed and sorted by the first injection valve 10. When it continues to fall to the second injection position P2, if it is recognized by the identification device 200, it is confirmed as the second Category materials are sprayed and sorted into the No. 2 chute 2 through the second spray valve 20. If it is the first type of material, it will not be sprayed by the second spray valve 20 and will fall into the No. 1 chute 1.

The second spray valve 20 is arranged on the lower side of the movement trajectory of the mineral, and sprays the mineral from bottom to top. After the second type of material is sprayed by the second spray valve 20, the second type of material is thrown up from bottom to top. Afterwards, the second category material continues to rise from the injection point to the highest point and then falls; when falling, the second category material can hit the back of the auxiliary sorting device 500 or directly fall into the No. 2 chute 2.

It should be noted that the auxiliary sorting device 500 in this application can be used to assist the sorting of the second category of materials, and can achieve control of the sorting accuracy of the second category of materials. For example, when the second category of materials is subjected to a blowing force When it is larger, the back of the auxiliary sorting device can be adjusted to intercept the flight of the second category material and improve the sorting accuracy of the second category material.

For example, the injection pressure of the first nozzle 11 is 0.5MPa˜0.75MPa; the injection pressure of the second nozzle 21 is 0.5MPa˜0.75MPa. The length of the No. 1 chute 1 is 1.2m~2m and the width is 0.8m~1.5m; the length of the No. 2 chute 2 is 1.2m~2m and the width is 0.8m~1.5m; the length of the No. 3 chute 3 is 1.2m~ 2m, width is 0.8m～1.5m.

It should be noted that in the embodiment of the present application, the first spray valve 10 is disposed on the side of the second spray valve 20 close to the distribution device 100 , and the spray position of the first spray valve 10 is higher than that of the second spray valve 20 . In the blowing position, the first spray valve 10 is used to blow the third category material into the No. 3 chute 3, and the second spray valve 20 is used to blow the second category material into the No. 2 chute 2; through this setting method, the mineral distribution can be When the density is high, it is prevented that the injection times of the first nozzle valve 10 and the second nozzle valve 20 are close, causing the flight paths of the second category material and the third category material to cross, thereby reducing the probability of mis-selection.

As shown in Figure 3, it is assumed that the second category material and the third category material have the same performance characteristics except the type, for example, the same weight and the same volume. When the first injection pressure F1 and the second injection pressure F2 are the same, the second category material receives an upward component force F1sinα1, and the third category material receives an upward component force F2sinα2. Here, α1 is the elevation angle of the second injection valve 20, α2 is the elevation angle of the first injection valve 10, and α1>α2. Since sinα1>sinα2, the upward component of the second category material is greater than the upward component of the third category material. The upward movement height of the second category material is greater than the upward movement height of the third category material; the second category material is subject to The component force of the lateral movement F1cosα1, the component force of the lateral movement of the third category material is F2cosα2, the component force of the forward movement of the third category material is greater than the component force of the forward movement of the second category material, the component force of the forward movement of the third category material is Material is thrown far.

In the embodiment of the present application, by setting the elevation angle of the second nozzle valve 20 to be greater than the elevation angle of the first nozzle valve 10, on the one hand, the elevation angle of the first nozzle valve 10 can be made smaller, so that the horizontal movement distance of the third category of materials can be reduced. Further, on the other hand, by increasing the elevation angle of the second spray valve 20, the vertical height of the second category material is blown higher, so that the movement trajectory of the second category material is in line with the second chute 2 away from the partition on the side of the distribution device ( Or the angle between the back side of the auxiliary sorting device 500 on the partition is reduced, and the opening of the No. 2 chute 2 is basically vertically incident, which can effectively reduce the distance in the horizontal direction of the No. 2 chute 2, that is, effectively The size of No. 2 chute 2 is reduced, and at the same time, the sorting accuracy of the second category of materials is increased.

In the embodiment of the present application, the difference between the elevation angle of the second injection valve 20 and the elevation angle of the first injection valve 10 ranges from 5° to 30°. Preferably, the elevation angle of the second injection valve 20 is 40°-60°; the elevation angle of the first injection valve 10 is 20°-40°. More preferably, the elevation angle of the second injection valve 20 is 45°, and the elevation angle of the first injection valve 10 is 37°. It should be noted that in the embodiment of the present application, the separation of the third category and the second category of materials is improved by making the elevation angles of the first nozzle valve 10 and the second nozzle valve 20 different. Therefore, the first nozzle valve 10 and the second nozzle valve 20 are separated. The second spray valve 20 can use an air nozzle of the same specifications and model and be matched with a high-frequency solenoid valve of the same specifications and models. It is also not necessary to control the blowing intensity of the first spray valve 10 and the second spray valve 20, thus significantly reducing the installation cost. costs and control costs.

In the embodiment of the present application, by controlling the elevation angles of the first spray valve 10 and the second spray valve 20, materials sprayed by different spray valves enter different chutes. Compared with controlling the injection intensity, by controlling the elevation angle, the occupied area of each chute is rationalized, the structure of the sorting chamber is reasonable, the injection accuracy is high, and the sorting accuracy is improved. The blowing pressure is rationalized to avoid the impact force between the material and the chute and avoid losses.

It is well known in the art that the greater the blowing pressure of the nozzle valve, the farther the material is blown. However, during the blowing process, the farther the blowing distance is, the more uncontrollable factors there are in the movement of the material, such as , wind resistance, impact force with the chute, etc. In the embodiment of the present application, the structural design of the spray valve is improved without increasing the injection pressure per unit area, so that the sorting effect of different materials can be improved by spraying from different angles of the spray valve.

Optionally, as shown in FIG. 4 , the first spray valve 10 includes a plurality of first nozzles 11 arranged in an array along the width direction of the distribution device 100 , and the second spray valve 20 includes a plurality of first nozzles 11 arranged in an array along the width direction of the distribution device 100 . A second nozzle 21.

The sorting device 300 may be provided with a gas outlet connected to the air supply equipment (not shown) corresponding to each spray valve. Solenoid valve, the type of solenoid valve can be a high-frequency solenoid valve. Each spray valve is connected to the air supply equipment through a solenoid valve. The air supply equipment is equipped with compressed gas to provide a gas source for the nozzle to spray different types of materials.

In the embodiment of the present application, through the plurality of first nozzles 11 and the plurality of second nozzles 21, when corresponding to materials of different shapes (such as size or particle size), the first nozzles 11 and the second nozzles can also be adjusted. The number of 21 enables control of the injection pressure. For example, when the area of the material is large, a larger number of nozzles can be used to blow the surface of the material. When the area of the material is small, a smaller number of nozzles can be used to blow the surface of the material. Different volumes can be sprayed on the surface of the material. The blowing distance (horizontal movement distance) of materials of different weights is maintained within a certain range.

In the embodiment of the present application, the first nozzle and the second nozzle are independent of each other, and the directions of the gases from the nozzles do not interfere with each other, so that different materials can receive the blowing from the corresponding nozzles without being affected by The blowing of other nozzles affects its movement trajectory and thus affects the final sorting result. When blowing, the number of nozzles used for blowing each material may also be different depending on the shape of each material.

In addition, during installation, as shown in Figure 5, the material receiving device 400 includes a first partition 31 for forming the first chute 1 and the second chute 2 at intervals, and a first partition 31 for forming the second chute 2 and the third chute 3 at intervals. The second partition 32 and the third partition 33 located on the side of the No. 3 chute 3, the heights of the first partition 31, the second partition 32, and the third partition 33 increase in sequence.

The higher the size of the chute, the higher the degree of interception of materials. However, combined with the first spray valve 10 with a smaller elevation angle in this application, the materials are sorted into the farthest No. 3 chute 3. The movement trajectory of the material is higher than that of the second spray valve. The movement trajectory of the material injection by the valve 20 is determined. Therefore, the height of the partition between each chute is set to increase sequentially along the direction of the material movement trajectory.

By adjusting the height of the partition of the chute, the sorting accuracy can be controlled. For example, for the second category of materials and the No. 2 chute 2 corresponding to the second category of materials, when the particle size of the second category becomes smaller, the sorting accuracy can be controlled by Adjust the height of the chute's partition to intercept the flight of the second category of materials and improve the sorting accuracy of the second category of materials. In the embodiment of this application, the applicable material particle size range is 30 mm to 350 mm. In different embodiments, by adjusting the height of the partition, materials of different particle sizes can be sorted.

In the embodiment of the present application, the auxiliary sorting device 500 is one or a combination of a horizontally arranged conveyor belt, an inclined conveyor belt, an angled inclined sliding plate. According to different sorting effects As a result, different types of auxiliary sorting devices 500 can be used. When set up, the sorting effect of the auxiliary sorting device 500 arranged obliquely is better than that of the auxiliary sorting device 500 arranged horizontally.

For example, the auxiliary sorting device 500 is arranged obliquely. When the auxiliary sorting device 500 is disposed on the partition between the chute and the chute, the auxiliary sorting device 500 tilts downward in a direction away from the distribution device 100 . For the auxiliary sorting device 500 disposed between the No. 2 chute 2 and the No. 3 chute 3 , the auxiliary sorting device 500 is used to transport the third category of materials falling on the auxiliary sorting device 500 to the auxiliary sorting device 500 In the No. 3 chute 3 at the lower end, the upper end of the auxiliary sorting device 500 is used to prevent the second category of materials from entering the No. 3 chute 3. In this embodiment, the orthographic projection of the auxiliary sorting device 500 on the horizontal plane partially overlaps with the orthographic projection of the No. 2 chute 2 on the horizontal plane, and also partially overlaps with the orthographic projection of the No. 3 chute 3 on the horizontal plane.

By such an inclined arrangement, for the chute close to the distribution device 100, it is equivalent to increasing the height of the partition between the chute and the chute. The overlapping projected back surface can block the material. For the chute far away from the distribution device 100, It is said that it is equivalent to increasing the size of the chute, effectively reducing the area occupied by the chute, while reducing the blowing intensity and increasing the sorting accuracy.

In the embodiment of the present application, the auxiliary sorting device 500 is preferably disposed between the No. 2 chute 2 and the No. 3 chute 3, so that the No. 3 chute can be improved without changing the dimensions of the No. 2 chute 2 and the No. 3 chute 3. 3 effective area. In addition, by setting up the auxiliary sorting device 500, the probability of mis-selection caused by sorting through different injection pressures in the prior art can be reduced. Due to the irregular shape of minerals, when two minerals of the same mass and composition have different irregular shapes, their blowing forces are different when they are blown by the same high-pressure gas. Therefore, they will produce With different flight paths, the probability of minerals being mistakenly selected increases.

When the auxiliary sorting device 500 is arranged in an inclined manner, the inclination direction is from high to low in the direction from the No. 2 chute 2 to the No. 3 chute 3. When the third category of materials falls on the auxiliary sorting device 500, it can be on the inclined plane. It rolls down into the No. 3 chute 3 under the action of , as shown in Figure 5. In addition, the auxiliary sorting device 500 above the No. 2 chute 2 can prevent the second category materials that want to enter the No. 2 chute 2 from being mistakenly sorted into the No. 3 chute 3 through the inclined back.

In addition, in the embodiments of the present application, the size of the auxiliary sorting device 500 is not limited. In some embodiments, the orthographic projection of the auxiliary sorting device 500 on the horizontal plane is equal to the orthographic projection of the No. 2 chute 2 on the horizontal plane. The overlapping area is larger than the overlapping area of the orthographic projection of the auxiliary sorting device 500 on the horizontal plane and the orthographic projection of the No. 3 chute 3 on the horizontal plane, where the auxiliary sorting device 500 is located on the second The part above the No. 3 chute 2 is used to block the second category of materials from entering the No. 3 chute 3; the front side of the auxiliary sorting device 500 is used to assist the third category of materials from entering the No. 3 chute 3; when setting, according to the sorting granules The length, inclination angle, the size of the above-mentioned overlapping area, etc. of the auxiliary sorting device 500 are adjusted according to the level and injection pressure.

Since in the embodiment of the present application, an auxiliary sorting device 500 is provided above the partition corresponding to the No. 2 chute 2 and the No. 3 chute 3, the first nozzle valve 10 is disposed on the lower side of the movement trajectory of the mineral to automatically classify the mineral. Injection is carried out from bottom to top, and the third category material is blown by the first spray valve 10. After being thrown up from bottom to top, it continues to rise from the injection point to the highest point and then falls; when falling, the third category material can After falling on the auxiliary sorting device 500, it can also fall directly into the No. 3 chute 3. Similarly, in other embodiments, an auxiliary sorting device 500 may be further provided above the partition between the No. 1 chute 1 and the No. 2 chute 2 .

After passing through the position of the first nozzle valve 10, the third category of materials is sorted, and the remaining two types of minerals are not sorted. When they fall to the position of the second nozzle valve 20, they pass through the second nozzle valve 20 for sorting. . The second spray valve 20 is arranged on the lower side of the movement trajectory of the mineral to realize the bottom-up spraying of the mineral. After the second category of material is sprayed by the second spray valve 20, it is thrown up from the bottom up and automatically The injection point continues to rise to the highest point and then falls; when falling, the second category of materials can hit the side of the auxiliary sorting device 500, or directly fall into the No. 2 chute 2.

It should be noted that in the embodiment of the present application, combined with the arrangement of the first injection valve 10 and the second injection valve 20 in the application, the injection position of the first injection valve 10 is higher than that of the second injection valve 20 . The blowing position and the first spray valve 10 is used to sort the No. 3 chute 3 away from the distribution device 100. The movement trajectory of the third category material after being blown by the first spray valve 10 is first thrown up and then dropped, and the second category material The movement trajectory of the material after being sprayed by the second spray valve 20 is also that it is first thrown up and then dropped. Through this arrangement, the collision angle between the third category material and the auxiliary sorting device 500 is reduced, and the second ejection of the third category material on the auxiliary sorting device 500 is reduced, thereby reducing the probability of mis-selection.

In addition, the elevation angle of the second nozzle valve 20 is greater than the elevation angle of the first nozzle valve 10, allowing the second nozzle valve 20 to blow the second category material to a higher vertical height. For the flight trajectory of the second category material, due to the auxiliary The sorting device 500 may cover a part of the No. 2 chute 2, so that the effective area of the No. 2 chute 2 can be further reduced on the basis of achieving the preset sorting accuracy. In the embodiment of the present application, by setting the flight trajectory of the second category material to first rise and then fall, the incident angle between its movement trajectory and the No. 2 chute 2 (the angle between the horizontal direction) increases, and the incident angle between the movement trajectory and the second chute 2 increases. increase The method of incident angle can make the second category of materials to be sprayed more concentratedly enter the No. 2 chute 2, reducing the probability of mis-selection.

As shown in Figure 6, this application also provides a material sorting method, using any of the above systems, the method includes:

S02. During the material transportation process, the identification device 200 is used to identify the material information on the distribution device 100; for example, during the material transportation process, the identification device 200 is used to identify the material category on the distribution device 100. The materials include first category materials, Second category materials and third category materials.

S04. When the material falls from the distribution device 100 to the blowing position corresponding to at least one spray valve, the sorting device 300 controls at least one spray valve to spray according to the material category corresponding to the material information, and sorts the material into at least two types. Category.

It should be noted that, for example, the image information of the material detected by the recognition device 200 is sent to the control device (not shown). The control device calculates the shape information of the corresponding material and the shape information of the corresponding material after the mineral is thrown from the conveyor belt through the image information. movement trajectory. The control device can adopt the image recognition algorithm in the existing technology (the algorithm for identifying shape, position, and type information can use different algorithms and then load it on the corresponding hardware), and can quickly identify the shape and position of each material in the image. , type information, the identification time is a few milliseconds to a few seconds, which is less than the time for the material to reach the sorting device 300 from the identification device 200.

In S04, the sorting of three types of materials is taken as an example for illustrative explanation, in which the sorting device 300 includes a first spray valve 10 and a second spray valve 20, and the following spraying method can be used for sorting:

When the third category material falls from the distribution device 100 to the first blowing position P1 corresponding to the first spray valve 10, the third category material is sprayed through the first spray valve 10, so that the third category material enters the No. 3 chute. 3.

When the second category material falls from the distribution device 100 to the second blowing position P2 corresponding to the second spray valve 20, the second category material is sprayed through the second spray valve 20, so that the second category material enters the No. 2 chute. 2.

The first category of materials falls from the top and bottom of the distribution device 100 into the No. 1 chute 1 and is not sprayed by the first spray valve 10 and the second spray valve 20 .

It should be noted that in the embodiment of the present application, the control device is also used to calculate the coordinate position of the material and the time to reach the first nozzle valve 10 and the second nozzle valve 20, and send the material to the first nozzle valve 10 and the second nozzle valve 20. 20 sends the time to start the injection. The control device is also used to calculate the particle size of the material or The overall size controls the number of opening nozzles on the spray valve.

During calculation, the control device obtains the position of the material on the conveyor belt based on the material image information obtained by the identification device 200, including the lateral position and longitudinal position of the conveyor belt. The lateral position obtained according to the calculation can be used to control the opening of the nozzle at the corresponding position and the number of nozzles; according to the longitudinal position, the time to reach the blowing position can be obtained to control the nozzle corresponding to the material to blow the material.

As shown in Figure 2, the circle represents the first category material, the triangle represents the second category material, and the rectangle represents the third category material. The first category material, the second category material, and the third category material are on the conveyor belt. When the materials reach the edge of the conveyor belt, they fly out in the horizontal direction at the same initial speed as the conveyor belt.

When the material reaches the blowing position of the first spray valve 10, if there is a third category of material in the material, the control device controls to start the first spray valve 10. When the third category of material is subject to the blowing force of the first spray valve 10, Follow the upward and then downward flight path to reach the No. 3 chute 3; or reach the auxiliary sorting device 500, and reach the No. 3 chute 3 through the action of the auxiliary sorting device 500. After passing through the first spray valve 10, the sorting of the third category material is completed.

When the material falls to the blowing position of the second spray valve 20, if there is a second type of material in the material, the control device controls to start the second spray valve 20, and the second type of material is affected by the blowing force of the second spray valve 20. When, it reaches the No. 2 chute 2 along the flight path of first upward and then downward; or reaches the No. 2 chute 2 through the obstruction on the back of the auxiliary sorting device 500 of the No. 2 chute 2. After passing through the second spray valve 20, the sorting of the second category material is completed, and the first category material that has not been sprayed reaches the No. 1 chute 1.

When two of the materials (such as the second category and the third category of materials) are located in the same width direction of the conveyor belt, when the second category of materials and the third category of materials arrive at the blowing position at the same time, due to the first spray valve 10 and The second spray valve 20 is also arranged along the width direction of the conveyor belt. Therefore, when the blowing position is reached, the second nozzle 21 and the first nozzle 11 corresponding to the second category material and the third category material are activated.

It should be understood that the terms "length", "width", "top", "bottom", "front", "back", "left", "right", "vertical", "horizontal", "top" The orientations or positional relationships indicated by "bottom", "inside", "outer", etc. are based on the orientations or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the device referred to. Or elements must have a specific orientation, be constructed and operate in a specific orientation and therefore are not to be construed as limitations on the invention.

In addition, the terms “first” and “second” are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Therefore, features defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present invention, "plurality" means two or more than two, unless otherwise explicitly and specifically limited.

Unless otherwise defined, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention relates. The terminology used herein is for the purpose of describing specific implementations only and is not intended to limit the invention. Terms such as "arranged" when used herein may mean that one component is directly attached to another component or that one component is attached to another component through intermediaries. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features, unless the feature is inapplicable in that other embodiment or otherwise stated.

The present invention has been described through the above-mentioned embodiments, but it should be understood that the above-mentioned embodiments are only for the purpose of illustration and illustration, and are not intended to limit the present invention to the scope of the described embodiments. Those skilled in the art can understand that more variations and modifications can be made based on the teachings of the present invention, and these variations and modifications all fall within the scope of protection claimed by the present invention.

Claims

A material sorting system, characterized by including:

Distribution device, used to transport materials;

An identification device used to identify the material information of the material on the distribution device;

A sorting device is used to sort materials according to the material information, the sorting device includes at least one spray valve located on the lower side of the movement trajectory of the mineral for blowing the material;

A material receiving device, including at least two chutes, used to accommodate at least two categories of materials after sorting;

An auxiliary sorting device, arranged above the at least two chutes, is used to transport the materials falling on the auxiliary sorting device to the chute on the side of the corresponding at least two chutes away from the distribution device. Inside.
The system according to claim 1, wherein the spray valve includes a first spray valve and a second spray valve for sorting the materials into three categories, and the first spray valve is disposed at the The second spray valve is close to the side of the distribution device.
The system according to claim 2, wherein the first spray valve includes a plurality of first nozzles arranged in an array along the width direction of the distribution device, and the second spray valve includes a plurality of first nozzles arranged along the width direction of the distribution device. A plurality of second nozzles arranged in an array in the width direction.
The system according to claim 3, characterized in that the injection pressure of the first nozzle is 0.5MPa～0.75MPa; the injection pressure of the second nozzle is 0.5MPa～0.75MPa.
The system according to claim 2, characterized in that the material receiving device includes a No. 1 chute on a side close to the distribution device, a No. 2 chute in the middle position, and a No. 3 chute on a side away from the distribution device.
The system according to claim 5, characterized in that the material receiving device includes a first partition for forming the No. 1 chute and the No. 2 chute at intervals, a first partition for forming the No. 2 chute and the No. 2 chute at intervals. The second partition of the No. 3 chute and the third partition located on one side of the No. 3 chute, so The heights of the first partition, the second partition and the third partition increase in sequence.
The system according to claim 6, characterized in that the auxiliary sorting device is arranged on the second partition, and the auxiliary sorting device is used to transport materials falling on the auxiliary sorting device. In the No. 3 chute, the orthographic projection of the auxiliary sorting device on the horizontal plane partially overlaps with the orthographic projection of the No. 2 chute on the horizontal plane.
The system according to claim 1, wherein the auxiliary sorting device is one or a combination of a horizontally arranged conveyor belt, an inclined conveyor belt, an angled inclined sliding plate.
The system according to claim 1, characterized in that the auxiliary sorting device is arranged obliquely, and the auxiliary sorting device is inclined downward in a direction away from the distribution device.
A material sorting method, characterized in that the system according to any one of claims 1 to 9 is used, and the method includes:

During the material transportation process, the material information of the material on the distribution device is identified through the identification device;

When the material falls from the distribution device to the blowing position corresponding to the at least one spray valve, the sorting device controls the at least one spray valve to blow according to the material category corresponding to the material information. , sorting the materials into at least two categories.