A conveying device of a coal gangue intelligent sorting machine

Abstract

The application relates to the technical field of intelligent sorting conveying equipment, and discloses a conveying device of a coal gangue intelligent sorting machine, which comprises a conveying belt fixedly installed on a rack, the conveying belt is driven to rotate by a motor, at least two isolation assemblies are arranged above the conveying belt, the isolation assemblies separate the upper part of the conveying belt into multiple independent conveying channels, a flow guide plate is arranged on the conveying belt and located at one end of the conveying channel, the width of the conveying channel gradually increases from one side of the gap to the other side, the ends of the conveying channels away from the gap are aligned, and the length of the conveying channel gradually decreases from one side of the gap to the other side. Small-particle coal gangue can pass through the smallest conveying channel, and large-particle coal gangue flows to the conveying channels with larger widths in sequence, so that in the process of conveying the coal gangue, the scanning imaging equipment is used to identify the gangue in the coal gangue, the high-pressure airflow sprayed by the air jet device is used to remove the gangue in the coal, and the accuracy of sorting during the conveying of the coal gangue is ensured.

Description

Technical Field

[0001] This application relates to the field of intelligent sorting and conveying equipment technology, and in particular to a conveying device for an intelligent coal gangue sorting machine. Background Technology

[0002] In the transportation process of coal mining, the efficient separation of coal gangue is a key step in improving the quality of raw coal. Traditional coal gangue sorting and conveying equipment usually uses belt conveyors to transport raw coal and gangue, and is combined with an identification system for differentiation. That is, the conveyor belt is used to transport coal gangue, and X-ray or optical technology is used to scan and image the coal and gangue on the conveyor belt to obtain material characteristics. Big data processing technology is used to perform deep learning on different coal qualities to automatically identify and classify coal and gangue in the coal gangue. Through automated control, the automatic gangue removal effect is achieved during the transportation process.

[0003] Chinese utility model patent application number 2024218090783 disclosed a coal conveying and screening device on July 22, 2025. The device conveys coal gangue through a conveyor belt assembly, and the ore identifier distinguishes between coal and gangue. The sorting screen is opened to remove gangue. However, when the gangue is large and the coal is small, the small coal is easily mixed in after the sorting screen is opened, resulting in poor performance.

[0004] Chinese invention patent application number 2020103030663 disclosed an intelligent coal gangue sorting machine on July 3, 2020. It also uses a conveyor belt to transport coal gangue and is equipped with an X-ray transmitting device and an X-ray receiving device to identify coal and gangue. It also links the nozzles to spray high-pressure airflow to selectively remove gangue from the coal gangue.

[0005] However, due to the different sizes of the coal gangue on the conveyor belt and the fact that the position of the coal gangue on the conveyor belt is not fixed, even after the gangue is identified, the airflow from the nozzle is difficult to be directed at the gangue. The gangue moves at an angle due to the high-pressure airflow and is prone to colliding with adjacent coal. This can also lead to the mixing of coal when the gangue is removed, affecting the accuracy of coal gangue sorting. Summary of the Invention

[0006] This application proposes a conveying device for an intelligent coal gangue sorting machine, which has the advantage of high sorting accuracy during coal gangue conveying. It solves the problem that in existing conveying equipment, coal is easily mixed into the gangue during gangue removal, resulting in low sorting accuracy.

[0007] To achieve the above objectives, this application adopts the following technical solution: a conveying device for an intelligent coal gangue sorting machine, comprising:

[0008] A conveyor belt is fixedly installed on a frame and driven by a motor. At least two isolation components are provided above the conveyor belt, which divide the area above the conveyor belt into multiple independent conveying channels. A guide plate is provided on the conveyor belt at one end of each conveying channel. The width of the conveying channel increases from one side of the gap to the other. The ends of each conveying channel away from the gap are aligned, and the length of the conveying channel decreases from one side of the gap to the other. Coal gangue on the conveyor belt passes through one end of the guide plate and first moves to the conveying channel with the smallest width value. The coal gangue is guided by the guide plate and moves to the conveying channel with the smallest width value after passing through the gap. Small-sized coal gangue can pass through the smallest conveying channel, while larger coal gangue particles flow to the conveying channels with larger width values ​​in sequence.

[0009] A scanning imaging device, located above the conveyor belt, identifies gangue passing through the conveyor channel.

[0010] A jetting device is located at the other end of the conveyor belt. The jetting device blows out a high-pressure airflow to remove gangue from the coal.

[0011] The coal receiving box and the gangue receiving box are located on one side of the jetting device, with the coal receiving box located between the jetting device and the gangue receiving box. Coal falls from one end of the conveyor belt into the coal receiving box, and gangue is blown into the gangue receiving box by the high-pressure airflow.

[0012] Furthermore, a cover is fixedly installed on the frame above the conveyor belt. The top of the guide plate is fixedly connected to the top of the inner cavity of the cover. Two baffles are fixedly installed on the top of the frame, with the two baffles located on both sides of the conveyor belt. The two baffles act as a barrier on both sides of the conveyor belt to prevent coal gangue from falling off the conveyor belt. One end of the guide plate abuts against one of the baffles, and the other end of the guide plate forms a gap between the guide plate and the other baffle to allow coal gangue to pass through. Under the conveying action of the conveyor belt, the coal gangue, guided by the guide plate, passes through this gap. A guide rod is set between the two baffles at one end of the conveying channel. The guide rod is inclined relative to the top of the conveyor belt, and the distance between the guide rod and the top of the conveyor belt increases uniformly from one end of the guide plate gap to the other end. This allows the guide rod to intercept larger pieces of coal gangue at different points in the conveying channel, so that the coal gangue moves into the corresponding size conveying channel as the conveyor belt rotates and the guide rod moves.

[0013] Furthermore, the isolation assembly includes an isolation plate, with positioning blocks fixedly installed at both ends of the top of the isolation plate. Two positioning rods are fixedly installed between the two baffles, and the two positioning rods are movably sleeved with the positioning blocks at one end of the top of the isolation plate. Nuts located on both sides of the positioning blocks are threaded onto the positioning rods. The positioning blocks are limited by the two nuts, so that the positioning blocks and the isolation plate remain in a stable state, thereby ensuring the stability of each independent conveying channel and preventing the isolation plate from shifting due to the impact of coal gangue during the conveying process.

[0014] Furthermore, the isolation assembly includes a telescopic partition, which is composed of a sliding partition and a limiting partition. A first limiting block is fixedly installed on the top of the limiting partition, and a second limiting block is fixedly installed on the top of the sliding partition. A sliding groove is formed on the second limiting block. Limiting rods are movably fitted into the middle of the first limiting block and within the sliding groove, respectively. Nuts located on both sides of the first limiting block and the second limiting block are threaded onto the two limiting rods. The position of the telescopic partition can be fixed by the nuts on both sides of the first and second limiting blocks. One limiting rod limits the first limiting block at the top of the limiting partition, while the other limiting rod slides within the sliding groove of the second limiting block at the top of the sliding partition. This allows for easy adjustment of the distance between two adjacent telescopic partitions, and thus, the width of the conveying channel can be adjusted according to actual conditions. For example, when there are more small-sized particles in the coal gangue, several narrower conveying channels can be provided; when there are more large-sized particles in the coal gangue, several wider conveying channels can be provided. This improves the applicability of the conveying device and enables it to meet the actual needs of coal gangue sorting and conveying under different working conditions.

[0015] Furthermore, the jetting device includes a positioning frame plate fixedly mounted on the frame. The top of the positioning frame plate is designed with a slope, and one end of the positioning frame plate is close to the conveyor belt. A plurality of nozzles are fixedly arranged on the slope of the positioning frame plate, and the nozzles are arranged at equal intervals on the positioning frame plate. The bottom end of each nozzle is connected to an air guide hose, and each air guide hose is equipped with a solenoid valve. The bottom end of each air guide hose is connected to a main air guide pipe, and one end of the main air guide pipe is connected to an air inlet pipe. A first valve is fixedly installed on the air inlet pipe, and a high-pressure gas tank is connected to the end of the air inlet pipe away from the main gas guide pipe. After the scanning imaging equipment identifies the gangue in the coal gangue on the conveyor belt, when the gangue falls from above the nozzle at the corresponding position, the solenoid valve on the gas guide hose connected to the nozzle opens. The high-pressure gas in the high-pressure gas tank flows through the air inlet pipe, the main gas guide pipe, and the gas guide hose, and is finally sprayed out through the nozzle. The airflow blows the gangue above into the gangue receiving box, thereby realizing the separation of gangue and coal.

[0016] Furthermore, the end of the high-pressure gas tank away from the air inlet pipe is connected to an air supply pipe, and a second valve is fixedly installed on the air supply pipe. The air supply pipe replenishes and pressurizes the inside of the high-pressure gas tank to ensure that the intensity of the ejected airflow is sufficient to blow the fallen gangue into the gangue receiving box.

[0017] Furthermore, the top height of the positioning frame plate does not exceed the middle height of the conveyor belt, ensuring that coal and gangue falling from one end of the conveyor belt can pass above the inclined surface of the positioning frame plate, and then the gangue is removed by the high-pressure airflow blown out by the nozzle.

[0018] Furthermore, the jetting device includes a positioning frame plate fixedly mounted on the frame. The top of the positioning frame plate is designed with an incline, and the positioning frame plate is located near one end of the conveyor belt. Several nozzles are arranged on the incline of the positioning frame plate, and the center of each nozzle is located on one side of the center line of the conveying channel. The bottom end of each nozzle is connected to a flexible air guide hose. Each flexible air guide hose is equipped with a solenoid valve. The bottom end of each flexible air guide hose is connected to a main air guide pipe. One end of the main air guide pipe is connected to an air inlet pipe. A first valve is fixedly installed on the air inlet pipe, and the end of the air inlet pipe away from the main air guide pipe is connected to a high-pressure air tank.

[0019] Furthermore, a first groove is formed on the inclined surface of the positioning frame plate, and several nozzles are slidably connected in the first groove. A second groove is formed on both sides of the first groove on the inclined surface of the positioning frame plate. A limiting slider located inside the positioning frame plate is fixedly installed on the nozzle. Two limiting pins are fixedly connected to the limiting slider. The two limiting pins pass through the second groove and are threaded with nuts, so that the nozzle can move along the first groove on the inclined surface of the positioning frame plate. This fixes the nozzle on one side of the center line of the conveying channel, so that when the gangue conveyed by the conveying channel passes over the corresponding nozzle, the high-pressure airflow sprayed by the nozzle is close to the center of the gangue, ensuring that the gangue is stably blown into the gangue receiving box. Moreover, through the flexible design of the nozzle position, two or more nozzles can be set in a relatively wide conveying channel to simultaneously spray airflow onto larger-sized gangue, further ensuring that the gangue can be accurately blown into the gangue receiving box and separated from the coal.

[0020] Furthermore, the scanning imaging equipment includes an X-ray imaging detection module, which is electrically connected to a PLC control module, a big data intelligent sorting module, and a sorting execution module. The X-ray imaging detection module acquires image data, and the big data intelligent sorting module performs real-time processing and feature extraction on the transmission image data to identify the type and contour coordinates of the target gangue. It also calculates the precise blowing sequence of the target gangue to the jetting device based on the real-time speed of the conveyor belt and feeds back the signal to the PLC controller. The PLC controller receives the precise blowing sequence and converts it into a low-level drive signal. When the target gangue reaches the top of the corresponding jetting device, the PLC controller controls the jetting device to spray high-pressure airflow to remove the gangue.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. This application provides a conveying device for an intelligent coal gangue sorting machine. By setting an isolation component above the conveyor belt, the upper part of the conveyor belt is divided into multiple independent conveying channels. With the guidance of the guide plate set on the conveyor belt, small coal gangue particles can pass through the smallest conveying channel first, while larger coal gangue particles move to the wider conveying channel as the conveyor belt moves. During the conveying process, a scanning imaging device is used to identify the gangue in the coal gangue, and a high-pressure airflow from a jetting device removes the gangue from the coal. Compared with existing coal gangue conveying equipment, this device can accurately separate coal and gangue during coal gangue conveying, avoiding the problem of mutual interference and errors caused by the close proximity of coal and gangue during the high-pressure airflow separation in existing equipment. This ensures the accuracy of sorting during coal gangue conveying.

[0023] 2. Multiple independent conveying channels, each with its corresponding width, transport coal gangue of different sizes. A jetting device is used to spray air onto the corresponding conveying channels, ensuring the high-pressure airflow is close to the center of the gangue. This guarantees the gangue is stably blown into the gangue receiving box, avoiding the problem in existing equipment where high-pressure airflow is insufficient to remove gangue from coal due to significant positional deviations. Furthermore, the flexible nozzle design allows for the installation of two or more nozzles within a wider conveying channel to simultaneously spray airflow onto larger gangue, further ensuring precise delivery of the gangue into the receiving box for separation from the coal. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort:

[0025] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0026] Figure 2 for Figure 1 A schematic diagram of the structure after removing the engine cover and housing.

[0027] Figure 3 for Figure 2 Top view;

[0028] Figure 4 for Figure 2 The left view;

[0029] Figure 5 for Figure 2 A schematic diagram of the jet propulsion system;

[0030] Figure 6 for Figure 3 Schematic diagram of the structure of the intermediate isolation component;

[0031] Figure 7 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0032] Figure 8 for Figure 7 A schematic diagram of the structure after removing the engine cover and housing.

[0033] Figure 9 for Figure 8 Top view;

[0034] Figure 10 for Figure 8 The left view;

[0035] Figure 11 for Figure 8 Schematic diagram of the structure of the intermediate isolation component;

[0036] Figure 12 This is a schematic diagram of the jet device in Embodiment 3 of the present invention;

[0037] Figure 13 for Figure 12 A magnified schematic diagram of the structure at point B;

[0038] Figure 14 for Figure 12 The right view.

[0039] In the diagram: 1. Frame; 2. Conveyor belt; 3. Motor; 4. Machine cover; 5. Scanning imaging equipment; 6. Jet jet device; 601. Positioning frame plate; 6011. First chute; 6012. Second chute; 602. Nozzle; 603. Air guide hose; 604. Solenoid valve; 605. Main air guide pipe; 606. Air inlet pipe; 607. First valve; 608. High-pressure air tank; 609. Air supply pipe; 610. Second valve; 611, limiting slider; 612, limiting pin; 7, housing; 8, coal receiving box; 9, gangue receiving box; 10, discharge chute; 11, baffle; 12, guide plate; 13, isolation plate; 14, positioning block; 15, positioning rod; 16, guide rod; 17, sliding partition; 18, limiting partition; 19, first limiting block; 20, second limiting block; 201, sliding groove; 21, limiting rod. Detailed Implementation

[0040] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0041] Example 1

[0042] like Figures 1-3 A conveying device for an intelligent coal gangue sorting machine includes a frame 1, a conveyor belt 2 mounted on top of the frame 1, and the conveyor belt 2 being driven by a motor 3 mounted on the frame 1 to convey coal gangue. A cover 4 is fixedly mounted on the frame 1 above the conveyor belt 2, and a scanning imaging device 5 is fixedly mounted on top of the cover 4. The scanning imaging device 5 includes an X-ray transmitting device mounted above the conveyor belt 2 and an X-ray receiving device mounted directly below the X-ray transmitting device, with the X-ray receiving device located inside the conveyor belt 2. When conveyor belt 2 transports coal gangue, scanning imaging device 5 emits X-rays that penetrate the coal gangue. Through X-ray imaging technology, it obtains the different components of the coal gangue on the conveyor belt 2 below. Using big data processing technology, it performs deep learning on different coal qualities to automatically identify coal and gangue in the coal gangue. A jetting device 6 is fixedly installed on the frame 1 at one end of the conveyor belt 2. After the scanning imaging device 5 identifies coal and gangue in the coal gangue, the jetting device 6 sprays high-pressure gas to automatically remove gangue and impurities, realizing intelligent sorting of coal and gangue during transportation.

[0043] A housing 7 is fixedly installed on the frame 1 at one end of the cover 4. Inside the housing 7, a coal receiving box 8 and a gangue receiving box 9 are fixedly installed, located diagonally below the conveyor belt 2. The interiors of the coal receiving box 8 and the gangue receiving box 9 are sloped, and a discharge chute 10 is provided at the lowest point inside the coal receiving box 8 and the gangue receiving box 9. The coal conveyed by the conveyor belt 2 falls into the coal receiving box 8, while the gangue that is blown by the spray is blown into the gangue receiving box 9 by high-pressure gas. Conveyor belts (existing known conveyor structures, such as the conveyor belt 2 in this invention, are not shown in the figure and will not be described in detail) are respectively provided below the two discharge chute 10 to transport the sorted coal and gangue.

[0044] like Figures 2-5 The jetting device 6 includes a positioning frame plate 601 fixedly mounted on the frame 1. The top of the positioning frame plate 601 is designed with an incline, and the positioning frame plate 601 is close to one end of the conveyor belt 2. The top height of the positioning frame plate 601 does not exceed the middle height of the conveyor belt 2, ensuring that coal and gangue falling from one end of the conveyor belt 2 can pass over the incline of the positioning frame plate 601. Several nozzles 602 are fixedly installed on the incline of the positioning frame plate 601, and the nozzles 602 are equidistantly arranged on the positioning frame plate 601. The bottom end of the nozzles 602 is connected to a gas guide hose 603. Each gas guide hose 603 is equipped with a solenoid valve 604. The bottom end of the gas guide hose 603 is connected to a main gas guide pipe 605. One end of the main gas guide pipe 605 is connected to an air inlet pipe 606. A first valve 607 is fixedly installed on the air inlet pipe 606. 6. A high-pressure gas tank 608 is connected to the end of the main gas pipe 605 away from the gas supply pipe 605. After the scanning imaging device 5 identifies the gangue in the coal gangue on the conveyor belt 2, when the gangue falls from above the nozzle 602 at the corresponding position, the solenoid valve 604 on the gas supply hose 603 connected to the nozzle 602 opens. The high-pressure gas in the high-pressure gas tank 608 flows through the inlet pipe 606, the main gas pipe 605, and the gas supply hose 603, and finally through the nozzle 608. The nozzle 602 sprays out airflow, which blows the gangue above into the gangue receiving box 9, thereby achieving the separation of gangue and coal. The end of the high-pressure gas tank 608 away from the air inlet pipe 606 is connected to the air supply pipe 609, and a second valve 610 is fixedly installed on the air supply pipe 609. The air supply pipe 609 replenishes and pressurizes the inside of the high-pressure gas tank 608 to ensure that the intensity of the sprayed airflow is sufficient to blow the falling gangue into the gangue receiving box 9.

[0045] Please see Figures 2-4The top of the frame 1 is fixedly installed with baffles 11 on both sides of the conveyor belt 2. The baffles 11 block and limit the movement of coal and gangue on the conveyor belt 2 to prevent them from falling off one side of the conveyor belt 2 during the conveying process. Inside the cover 4, a guide plate 12 is fixedly installed at the end of the conveyor belt 2 away from the jet device 6. One end of the guide plate 12 abuts against one of the baffles 11, and a gap is reserved between the other end of the guide plate 12 and the other baffle 11 for the passage of coal and gangue. When the coal and gangue start to be conveyed at one end of the top of the conveyor belt 2, it is guided by the guide plate 12 to pass through the gap.

[0046] Several isolation components are fixedly installed between the two baffles 11 and between the guide plate 12 and the jet device 6. There are at least two isolation components, located directly above the conveyor belt 2. Each isolation component includes an isolation plate 13. These isolation plates 13 divide the space above the conveyor belt 2 into multiple independent conveying channels. The width of each conveying channel increases sequentially from the notch at one end of the guide plate 12 to the side furthest from the notch, while the length of each conveying channel decreases sequentially from the notch at one end of the guide plate 12 to the side furthest from the notch. After the coal gangue passes through the notch, it first moves with the conveyor belt 2 to the conveying channel with the smallest width. Small coal gangue particles... Larger coal gangue particles can pass through the smallest conveying channel, while larger particles flow sequentially to the wider conveying channels. This allows coal gangue of different sizes to move through conveying channels of corresponding widths. Positioning blocks 14 are fixedly installed at both ends of the top of the partition plate 13. Two positioning rods 15 are fixedly installed between the two baffles 11. The two positioning rods 15 are movably connected to the positioning blocks 14 at one end of the top of the partition plate 13. Nuts located on both sides of the positioning blocks 14 are threaded onto the positioning rods 15. The nuts limit the positioning blocks 14, keeping the positioning blocks 14 and the partition plate 13 stable, thereby ensuring the stability of each conveying channel.

[0047] A guide rod 16 is provided between the two baffles 11 at one end of the conveying channel, such as... Figure 4 As shown, the guide rod 16 is inclined relative to the top of the conveyor belt 2. The distance between the guide rod 16 and the top of the conveyor belt 2 increases uniformly from one end of the notch of the guide plate 12 to the other end, so that the guide rod 16 can intercept larger coal gangue at different conveying channels, and the coal gangue can be moved into the corresponding size conveying channel as the conveyor belt 2 rotates and the guide rod 16 is guided.

[0048] In use, the PLC control module is electrically connected to the big data intelligent sorting module, the X-ray imaging detection module, and the sorting execution module. The conveyor belt 2 transports the coal gangue, and different types of coal gangue are separated into conveyor channels of appropriate width by isolation components. After passing through the scanning imaging device 5, each piece of coal gangue is scanned using X-rays emitted by the device. The X-ray imaging detection module acquires image data, and the big data intelligent sorting module, which is communicatively connected to the X-ray imaging detection module, performs real-time processing of the transmission image data. Feature extraction identifies the type and contour coordinates of the target gangue, and calculates the precise spraying timing of the target gangue reaching the jetting device 6 in conjunction with the real-time speed of the conveyor belt 2. The signal is then fed back to the PLC controller, which receives the precise spraying timing and converts it into a low-level drive signal. When the target gangue reaches above the corresponding nozzle 602, the PLC controller controls the solenoid valve 604 on the air guide hose 603 connected to the nozzle 602 to open, and high-pressure gas is sprayed from the nozzle 602 to blow the target gangue into the gangue receiving box 9.

[0049] Example 2

[0050] like Figures 7-11 Based on Embodiment 1, the difference lies in the structural composition of the isolation component. The isolation component includes telescopic partitions, which divide the space above the conveyor belt 2 into multiple conveying channels. The width of the conveying channels increases sequentially from the notch at one end of the guide plate 12 to the side away from the notch, and the length of the conveying channels decreases sequentially from the notch at one end of the guide plate 12 to the side away from the notch. The telescopic partitions are assembled from sliding partitions 17 and limiting partitions 18. A first limiting block 19 is fixedly installed on the top of the limiting partition 18, and a second limiting block 20 is fixedly installed on the top of the sliding partition 17. A sliding groove 201 is provided on the second limiting block 20. Limiting rods 21 are movably fitted in the middle of the first limiting block 19 and in the sliding groove 201, respectively. Nuts located on both sides of the first limiting block 19 and the second limiting block 20 are threaded onto the two limiting rods 21 respectively. The position of the telescopic partition can be fixed by the nuts on both sides of the first limiting block 19 and the second limiting block 20. The first limiting block 19 is limited by one of the limiting rods 21 at the top of the limiting partition 18, and the other limiting rod 21 is slidably set in the sliding groove 201 of the second limiting block 20 at the top of the sliding partition 17. This allows for easy adjustment of the distance between two adjacent telescopic partitions, and thus the width of the conveying channel can be adjusted according to the actual situation. For example, when there are more small-sized particles in the coal gangue, more narrow conveying channels can be set up, and when there are more large-sized particles in the coal gangue, more wide conveying channels can be set up.

[0051] Example 3

[0052] like Figures 12-14Based on Embodiment 2, the difference lies in the structure of the jet device 6. The jet device 6 includes a positioning frame plate 601 fixedly mounted on the frame 1. The top of the positioning frame plate 601 is designed with an inclined surface, and the positioning frame plate 601 is close to one end of the conveyor belt 2. The height of the top of the positioning frame plate 601 does not exceed the height of the middle part of the conveyor belt 2. A first groove 6011 is formed on the inclined surface of the positioning frame plate 601, and a plurality of nozzles 602 are slidably connected in the first groove 6011. A second groove 6012 located on both sides of the first groove 6011 is formed on the inclined surface of the positioning frame plate 601. A limiting slider 611 located inside the positioning frame plate 601 is fixedly mounted on the nozzle 602. Two limiting pins 612 are fixedly connected to the limiting slider 611. Each nozzle 602 is threaded through the second chute 6012 and threaded with a nut, allowing the nozzle 602 to move along the first chute 6011 on the inclined surface of the positioning frame plate 601. This fixes the nozzle 602 to one side of the center of the conveying channel, ensuring that when the gangue conveyed through the conveying channel passes above the corresponding nozzle 602, the high-pressure airflow from the nozzle 602 is close to the center of the gangue, ensuring that the gangue is stably blown into the gangue receiving box 9. Furthermore, through the flexible design of the nozzle 602's position, two or more nozzles 602 can be set within a relatively wide conveying channel to simultaneously blow airflow onto larger-sized gangue, further ensuring that the gangue is accurately blown into the gangue receiving box 9 and separated from the coal.

[0053] The bottom end of nozzle 602 is connected to a gas guide hose 603. Each gas guide hose 603 is equipped with a solenoid valve 604. The bottom end of the gas guide hose 603 is connected to a main gas guide pipe 605. One end of the main gas guide pipe 605 is connected to an air inlet pipe 606. A first valve 607 is fixedly installed on the air inlet pipe 606, and the end of the air inlet pipe 606 away from the main gas guide pipe 605 is connected to a high-pressure gas tank 608. After the scanning imaging device 5 identifies the gangue on the conveyor belt 2, when the gangue falls from above the nozzle 602 at the corresponding position, the solenoid valve on the gas guide hose 603 connected to that nozzle 602 is activated. When the solenoid valve 604 is opened, the high-pressure gas in the high-pressure gas tank 608 flows through the inlet pipe 606, the main gas pipe 605, and the gas hose 603, and is finally ejected through the nozzle 602. The airflow blows the gangue above into the gangue receiving box 9, thereby achieving the separation of gangue and coal. The end of the high-pressure gas tank 608 away from the inlet pipe 606 is connected to the gas supply pipe 609, and a second valve 610 is fixedly installed on the gas supply pipe 609. The gas supply pipe 609 replenishes and pressurizes the inside of the high-pressure gas tank 608 to ensure that the ejected airflow is strong enough to blow the falling gangue into the gangue receiving box 9.

[0054] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A conveying device for an intelligent coal gangue sorting machine, characterized in that, include: A conveyor belt is fixedly installed on the frame and driven by a motor. At least two isolation components are provided above the conveyor belt, which divide the area above the conveyor belt into multiple independent conveying channels. A guide plate is provided on the conveyor belt at one end of the conveying channel. The width of the conveying channel increases from one side of the gap to the other side. The ends of each conveying channel away from the gap are aligned, and the length of the conveying channel decreases from one side of the gap to the other side. Coal gangue on the conveyor belt passes through one end of the guide plate and moves first to the conveying channel with the smallest width. A scanning imaging device, located above the conveyor belt, identifies gangue passing through the conveyor channel; A jetting device is located at the other end of the conveyor belt. The jetting device blows out a high-pressure airflow to remove gangue from the coal. The coal receiving box and the gangue receiving box are located on one side of the jetting device, with the coal receiving box located between the jetting device and the gangue receiving box. Coal falls from one end of the conveyor belt into the coal receiving box, and gangue is blown into the gangue receiving box by the high-pressure airflow. Two baffles are fixedly installed on the top of the frame, and the two baffles are respectively located on both sides of the conveyor belt. One end of the guide plate abuts against one of the baffles, and the other end of the guide plate forms a gap between the guide plate and the other baffle to allow coal gangue to pass through. A guide rod is provided between the two baffles at one end of the conveying channel. The guide rod is inclined relative to the top of the conveyor belt, and the distance between the guide rod and the top of the conveyor belt increases uniformly from one end of the guide plate gap to the other end.

2. The conveying device of the intelligent coal gangue sorting machine according to claim 1, characterized in that, A cover is fixedly installed on the frame above the conveyor belt, and the top of the guide plate is fixedly connected to the top of the inner cavity of the cover.

3. The conveying device of the intelligent coal gangue sorting machine according to claim 2, characterized in that, The isolation assembly includes an isolation plate, with positioning blocks fixedly installed at both ends of the top of the isolation plate. Two positioning rods are fixedly installed between the two baffles. The two positioning rods are movably sleeved with the positioning blocks at one end of the top of the isolation plate, and nuts located on both sides of the positioning blocks are threaded onto the positioning rods.

4. The conveying device of the intelligent coal gangue sorting machine according to claim 2, characterized in that, The isolation assembly includes a telescopic partition, which is composed of a sliding partition and a limiting partition. A first limiting block is fixedly installed on the top of the limiting partition, and a second limiting block is fixedly installed on the top of the sliding partition. A sliding groove is provided on the second limiting block. A limiting rod is movably fitted in the middle of the first limiting block and in the sliding groove, and nuts located on both sides of the first limiting block and the second limiting block are threaded onto the two limiting rods, respectively.

5. The conveying device of the intelligent coal gangue sorting machine according to any one of claims 3-4, characterized in that, The jetting device includes a positioning frame plate fixedly mounted on the frame. The top of the positioning frame plate is designed with a slope, and the end of the positioning frame plate is close to the conveyor belt. Several nozzles are fixedly arranged on the slope of the positioning frame plate, and the nozzles are arranged at equal intervals on the positioning frame plate. The bottom end of each nozzle is connected to a flexible air guide hose. Each flexible air guide hose is equipped with a solenoid valve. The bottom end of each flexible air guide hose is connected to a main air guide pipe. One end of the main air guide pipe is connected to an air inlet pipe. A first valve is fixedly installed on the air inlet pipe, and the end of the air inlet pipe away from the main air guide pipe is connected to a high-pressure air tank.

6. The conveying device of the intelligent coal gangue sorting machine according to claim 5, characterized in that, The high-pressure gas tank is connected to a gas supply pipe at the end away from the gas inlet pipe, and a second valve is fixedly installed on the gas supply pipe.

7. The conveying device of the intelligent coal gangue sorting machine according to claim 5, characterized in that, The top height of the positioning frame plate shall not exceed the middle height of the conveyor belt.

8. The conveying device of the intelligent coal gangue sorting machine according to any one of claims 3-4, characterized in that, The jetting device includes a positioning frame plate fixedly mounted on the frame. The top of the positioning frame plate is designed with a slope, and the positioning frame plate is located near one end of the conveyor belt. Several nozzles are arranged on the slope of the positioning frame plate, and the center of each nozzle is located on one side of the center line of the conveying channel. The bottom end of each nozzle is connected to a flexible air guide hose. Each flexible air guide hose is equipped with a solenoid valve. The bottom end of each flexible air guide hose is connected to a main air guide pipe. One end of the main air guide pipe is connected to an air inlet pipe. A first valve is fixedly installed on the air inlet pipe, and the end of the air inlet pipe away from the main air guide pipe is connected to a high-pressure air tank.

9. The conveying device of the intelligent coal gangue sorting machine according to claim 8, characterized in that, The positioning frame plate has a first sliding groove on its inclined surface, and a plurality of nozzles are slidably connected in the first sliding groove. The positioning frame plate has a second sliding groove on both sides of the first sliding groove. A limiting slider located inside the positioning frame plate is fixedly installed on the nozzle, and two limiting pins are fixedly connected to the limiting slider.

10. The conveying device of the intelligent coal gangue sorting machine according to claim 1, characterized in that, The scanning imaging equipment includes an X-ray imaging detection module, which is electrically connected to a PLC control module, a big data intelligent sorting module, and a sorting execution module. The X-ray imaging detection module acquires image data, and the big data intelligent sorting module performs real-time processing and feature extraction on the transmission image data to identify the type and contour coordinates of the target gangue. It also calculates the precise blowing sequence of the target gangue to the jetting device based on the real-time speed of the conveyor belt and feeds back the signal to the PLC controller. The PLC controller receives the precise blowing sequence and converts it into a low-level drive signal. When the target gangue reaches the top of the corresponding jetting device, the PLC controller controls the jetting device to spray high-pressure airflow to remove the gangue.

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