A dry coal separation device and its usage method

Abstract

The present invention discloses a dry coal separation device and its usage method, relating to the technical field of coal separation devices. The dry coal separation device includes a main body of the coal separation device, on which a feed hopper and a mixing conveyor are provided. A sorting unit is installed on the main body of the coal separation device, a dust removal seat is provided on the main body of the coal separation device, and an intermittent cleaning mechanism is provided on the main body of the coal separation device. The dry coal separation device adopts active and passive defense methods for the dust inside the device. Among them, the passive method is to form a negative pressure in the bottom area of the dust removal seat through a dust suction groove, so as to form an air curtain around the photoelectric scanning imaging recognition device. The active method is to design an intermittent cleaning mechanism at the bottom of the photoelectric scanning imaging recognition device to automatically clean the bottom of the photoelectric scanning imaging recognition device. Therefore, during the use of the device, there is no need to regularly stop the device for operation, ensuring stable use of the device and saving time and effort in operation.

Description

Technical Field

[0001] The present invention relates to the technical field of coal preparation devices, and particularly to a dry coal preparation device and a using method thereof. Background Art

[0002] The working principle of a dry coal preparation device mainly utilizes the physical properties of coal and gangue under different conditions, such as gravity, buoyancy, and component differences. Under the action of mechanical vibration, air flow, or shaking, the materials will be stratified according to the interference settlement law of particles. The dry coal preparation technology mainly includes optoelectronic coal separation, air coal separation, air dense medium fluidized bed coal separation, and selective crushing coal separation. Among them, the mainly large-scale industrial applications are compound dry coal separation and optoelectronic coal separation.

[0003] During the optoelectronic coal separation process, it mainly includes a scanning and recognition stage and a separation stage. In the scanning and recognition stage, penetrating rays such as γ-rays or X-rays are used to scan the coal sample. After the rays penetrate the coal sample, they are received by a detector and converted into electrical signals. Using advanced imaging technology and artificial intelligence technology, the processed signals are intelligently recognized. By comparing the characteristic information of coal and gangue, such as reflectivity, absorption rate, etc., the distinction between coal and gangue is realized. The separation stage includes an actuator. According to the result of intelligent recognition, the actuator is controlled to separate coal and gangue. The actuator usually adopts the method of high-pressure air. During the operation process, since dust is easily generated during the internal feeding and conveying process of the dry coal preparation device, and the dust adheres to the lens or detector of the scanning device, it will reduce the imaging quality, making the scanned image blurred or distorted. The dust itself generates interference signals, and these signals will cover up the true signals of coal or gangue, resulting in inaccurate scanning results. The fine particles in the dust may also scatter or absorb part of the rays, affecting the transmittance of the transmitted sample electron beam, thereby reducing the penetration ability and signal intensity of the rays, and further affecting the imaging clarity and the accuracy of the scanning results. Therefore, during the use process, it is necessary to regularly stop the device and open the inspection plate to clean the position of the internal scanning device. Such operation is cumbersome, time-consuming and laborious, and affects the use of the device. Aiming at the deficiencies of the prior art, the present invention provides a dry coal preparation device and a using method thereof to solve the above problems. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the present invention provides a dry coal preparation device and a using method thereof, which adopt active and passive defense methods for the dust inside the device. Among them, the passive method is to form a negative pressure on the bottom area of the dust removal seat through a dust suction groove, so as to form an air curtain around the optoelectronic scanning imaging recognition device. The active method is to design an intermittent cleaning mechanism at the bottom of the optoelectronic scanning imaging recognition device to automatically clean the bottom of the optoelectronic scanning imaging recognition device. Therefore, during the use process of the device, it is not necessary to regularly stop the device, ensuring the stable use of the device, saving time and effort in operation, and meeting the use requirements.

[0005] To achieve the above object, the present invention is realized through the following technical solutions: A dry coal separation device includes a main body of the coal separation device, on which a feed hopper and a mixing conveyor are provided, and a sorting unit is installed on the main body of the coal separation device;

[0006] The sorting unit includes a photoelectric scanning imaging recognition device and a sorting execution device fixedly connected to the main body of the coal separation device. The photoelectric scanning imaging recognition device is arranged above the mixing conveyor, and the sorting execution device is arranged at the end of the mixing conveyor;

[0007] A dust removal seat is provided on the main body of the coal separation device. An installation seat for limiting the photoelectric scanning imaging recognition device is fixedly connected to the inner side of the dust removal seat. A dust suction groove is opened at the bottom of the dust removal seat, and a dust removal fan connecting pipe communicated with the dust suction groove is provided on the side of the dust removal seat;

[0008] An intermittent cleaning mechanism for cleaning the photoelectric scanning imaging recognition device is provided on the main body of the coal separation device. The intermittent cleaning mechanism includes a guide rail rod arranged on the dust removal seat and a first slider sleeved on the guide rail rod. A cleaning roller main body is rotatably connected to the first slider.

[0009] Preferably, a connecting frame is fixedly connected to the first slider, a movable rail is fixedly connected to the connecting frame, a second slider is slidably connected inside the movable rail. The intermittent cleaning mechanism further includes a first transmission wheel, a second transmission wheel and a third transmission wheel rotatably connected to the inner wall of the main body of the coal separation device. A first transmission belt is sleeved on the first transmission wheel, the second transmission wheel and the third transmission wheel. A limiting shaft is fixedly connected to the first transmission belt, and the limiting shaft is rotatably connected to the second slider. A driving component is provided on the first transmission wheel.

[0010] Preferably, the driving component includes a fourth transmission wheel fixedly connected to the driving shaft of the mixing conveyor and a fifth transmission wheel arranged on the rotating shaft of the first transmission wheel. A second transmission belt is sleeved on the fifth transmission wheel and the fourth transmission wheel.

[0011] Preferably, a cleaning roller cleaning component for cleaning the cleaning roller main body is provided inside the main body of the coal separation device. The cleaning roller cleaning component includes a cleaning roller brush rotatably connected to the main body of the coal separation device. A seventh transmission wheel is provided on the rotating shaft of the cleaning roller brush, a sixth transmission wheel is provided on the second transmission wheel, and a third transmission belt is sleeved on the sixth transmission wheel and the seventh transmission wheel.

[0012] Preferably, the cleaning roller cleaning component further includes a rubber strip fixedly connected to the bottom of the dust removal seat. The cleaning roller brush contacts the rubber strip when rotating.

[0013] Preferably, the sorting execution device is equipped with multi-point nozzles and a compressed gas delivery pipe. The compressed gas delivery pipe is used to deliver compressed gas and eject the gangue identified by the optoelectronic scanning imaging recognition device through the multi-point nozzles.

[0014] Preferably, a coal conveyor and a gangue conveyor are provided on the main body of the coal separation device. The coal conveyor and the gangue conveyor are arranged at the end of the mixing conveyor.

[0015] Preferably, positioning blocks are provided on both sides of the optoelectronic scanning imaging recognition device. A locking assembly for limiting the positioning blocks is provided on the top of the main body of the coal separation device. The locking assembly includes a fixed frame fixedly connected to the main body of the coal separation device. A locking rod is movably clamped on the fixed frame. A locking hole is formed on the positioning block, and the locking rod is movably clamped in the locking hole.

[0016] Preferably, a guiding frame is fixedly connected to the fixed frame. A lead screw is threadedly connected to the guiding frame. A pushing block is rotatably connected to the lead screw. The pushing block is slidably connected to the guiding frame. The pushing block is used to support the locking rod. A handle is provided on the positioning block.

[0017] In the second aspect of the present invention, a method for using a dry coal separation device is provided. The method for using includes the following steps. Step S1: Place the raw materials in the feed hopper and convey them through the mixing conveyor so that the raw materials are laid flat on the mixing conveyor.

[0018] Step S2: When the raw materials pass through the sorting unit, perform image scanning and recognition through the optoelectronic scanning imaging recognition device to locate the positions of coal and gangue.

[0019] Step S3: When the raw materials pass through the end of the mixing conveyor and fall, perform air jet blowing through the sorting execution device to apply air flow to the located gangue so that the gangue and coal are separated.

[0020] Step S4: During the process of image recognition by the optoelectronic scanning imaging recognition device, apply negative pressure to the position of the dust suction groove through the dust removal fan connection pipe so that an air curtain is formed around the bottom of the optoelectronic scanning imaging recognition device to prevent dust from adhering to the optoelectronic scanning imaging recognition device.

[0021] Step S5: During the operation of the device, synchronously clean the surface of the optoelectronic scanning imaging recognition device through the intermittent cleaning mechanism to prevent dust adhesion, ensure clear imaging and accurate recognition of the optoelectronic scanning imaging recognition device.

[0022] The present invention discloses a dry coal separation device and a method for using the same, and the beneficial effects thereof are as follows:

[0023] 1. The dry coal separation device adopts active and passive defense methods for the dust inside the device. Among them, the passive method is to form a negative pressure in the bottom area of the dust removal seat through the dust suction groove, so as to form an air curtain around the photoelectric scanning imaging recognition device. On the one hand, it removes dust inside the main body of the coal separation device, and on the other hand, it forms an air curtain around the lower part of the photoelectric scanning imaging recognition device to prevent dust from adsorbing on the photoelectric scanning imaging recognition device and affecting the imaging quality. The active method is to design an intermittent cleaning mechanism at the bottom of the photoelectric scanning imaging recognition device to automatically clean the bottom of the photoelectric scanning imaging recognition device, ensuring clear imaging of the photoelectric scanning imaging recognition device. Therefore, during the use of the device, there is no need to regularly stop the device for operation, ensuring stable use of the device, saving time and effort in operation, and meeting the use requirements.

[0024] 2. The dry coal separation device, the intermittent cleaning mechanism uses the driving component to provide driving force. The driving component has a compact structure and obtains power through the rotating shaft of the mixing conveyor. Therefore, the mixing conveyor not only provides material transportation but also drives the intermittent cleaning mechanism to operate. Through the design of the cleaning roller cleaning component, the cleaning of the cleaning roller main body in the intermittent cleaning mechanism is realized, ensuring the cleanliness of the surface of the cleaning roller main body, so as to have a good cleaning effect on the photoelectric scanning imaging recognition device. The cleaning roller cleaning component is also driven by the driving component. Finally, the cleaning roller brush pats the cleaning roller main body to ensure the cleanliness of the surface of the cleaning roller main body. The dust slapped off is negatively absorbed through the dust suction groove and the dust removal fan connecting pipe. When the device starts, all components work synchronously, making the device design reasonable in operation, with strong practicability and stable operation.

[0025] 3. The dry coal separation device, through the design of the handle and the positioning block, makes it convenient to take the photoelectric scanning imaging recognition device. Coupled with the design of the locking component, it makes the disassembly and assembly of the photoelectric scanning imaging recognition device convenient and the maintenance of the photoelectric scanning imaging recognition device convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 It is a sectional view of the overall device of the present invention;

[0029] Figure 3 For the present invention Figure 2 Enlarged view of part A;

[0030] Figure 4 Schematic structural diagram of the sorting execution device of the present invention;

[0031] Figure 5 Schematic diagram of the position of the dust suction groove of the present invention;

[0032] Figure 6 Schematic disassembled diagram of the photoelectric scanning imaging recognition device of the present invention;

[0033] Figure 7 Schematic structural diagram of the locking component of the present invention;

[0034] Figure 8 Schematic structural diagram of the intermittent cleaning mechanism of the present invention;

[0035] Figure 9 Schematic structural diagram of the connecting frame of the present invention;

[0036] Figure 10 Schematic structural diagram of the driving component and the cleaning roller cleaning component of the present invention.

[0037] In the figure: 1. Main body of coal separation device; 11. Feed hopper; 12. Mixing conveyor; 13. Coal conveyor; 14. Gangue conveyor; 2. Sorting unit; 21. Photoelectric scanning imaging recognition device; 211. Positioning block; 212. Locking hole; 213. Handle; 22. Sorting execution device; 221. Multi-point spray head; 222. Compressed gas delivery pipe; 3. Dust removal seat; 31. Dust suction groove; 32. Dust removal fan connecting pipe; 4. Mounting seat; 5. Intermittent cleaning mechanism; 51. Guide rail rod; 52. First slider; 53. Main body of cleaning roller; 54. Connecting frame; 55. Moving rail; 56. Second slider; 561. Limiting shaft; 57. First driving wheel; 571. First transmission belt; 58. Second driving wheel; 59. Third driving wheel; 6. Locking component; 61. Fixed frame; 62. Lock rod; 63. Guide frame; 64. Lead screw; 65. Pushing block; 7. Driving component; 71. Fourth driving wheel; 72. Fifth driving wheel; 73. Second transmission belt; 8. Cleaning roller cleaning component; 81. Sixth driving wheel; 82. Seventh driving wheel; 83. Third transmission belt; 84. Cleaning roller brush; 85. Rubber strip. Detailed implementation manners

[0038] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described below. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0039] Embodiments of the present application provide a dry coal separation device and a method for using the same, which solve the problem that dust is easily generated during the internal feeding and conveying process of the dry coal separation device. The dust adheres to the lens or detector of the scanning device, which will reduce the imaging quality, making the scanned image blurred or distorted. The dust itself generates interference signals, and these signals will cover up the true signals of coal or gangue, resulting in inaccurate scanning results. The fine particles in the dust may also scatter or absorb part of the rays, affecting the transmittance of the transmitted sample electron beam, thereby reducing the penetration ability and signal intensity of the rays, further affecting the imaging clarity and the accuracy of the scanning results. Therefore, during the use process, it is necessary to regularly stop the device and open the maintenance panel to clean the position of the internal scanning device. Such operations are cumbersome, time-consuming and laborious, and affect the use of the device.

[0040] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings of the specification and specific embodiments.

[0041] An embodiment of the present invention discloses a dry coal separation device, according to the attached Figure 1 to the attached Figure 10 As shown, it includes a coal separation device main body 1. An inlet hopper 11 and a mixing conveyor 12 are provided on the coal separation device main body 1. The inlet hopper 11 and the mixing conveyor 12 facilitate the feeding and conveying of raw materials. A sorting unit 2 is installed on the coal separation device main body 1. The sorting unit 2 is used to separate coal and gangue;

[0042] The sorting unit 2 includes a photoelectric scanning imaging and recognition device 21 and a sorting execution device 22 fixedly connected to the coal separation device main body 1. The photoelectric scanning imaging and recognition device 21 is arranged above the mixing conveyor 12, and the sorting execution device 22 is arranged at the end of the mixing conveyor 12;

[0043] A coal conveyor 13 and a gangue conveyor 14 are provided on the coal separation device main body 1. The coal conveyor 13 and the gangue conveyor 14 are arranged at the end of the mixing conveyor 12; The sorting execution device 22 includes a multi-point nozzle 221 and a compressed gas delivery pipe 222. The compressed gas delivery pipe 222 is used to deliver compressed gas and spray the gangue identified by the photoelectric scanning imaging and recognition device 21 through the multi-point nozzle 221. The multi-point nozzle 221 is connected to the compressed gas delivery pipe 222. Compressed gas is provided to the compressed gas delivery pipe 222 by an external air pressure device, and the computer precisely controls the multi-point nozzle 221 at the corresponding position to spray air flow, so that the air flow blows on each group of gangue, causing the gangue to move inside the gangue conveyor 14, while the coal naturally falls through movement and finally falls into the coal conveyor 13, realizing the rapid separation of coal and gangue.

[0044] The main body 1 of the coal preparation device is provided with a dust removal seat 3. Inside the dust removal seat 3, there is a fixedly connected mounting seat 4 for limiting the photoelectric scanning imaging recognition device 21. At the bottom of the dust removal seat 3, there is a dust suction groove 31. On the side of the dust removal seat 3, there is a dust removal fan connecting pipe 32 communicating with the dust suction groove 31. The dust removal fan connecting pipe 32 is connected to an external negative pressure fan. A negative pressure is formed in the bottom area of the dust removal seat 3 through the dust suction groove 31, so that an air curtain is formed around the photoelectric scanning imaging recognition device 21. On the one hand, it conducts dust removal inside the main body 1 of the coal preparation device. On the other hand, an air curtain is formed around the lower part of the photoelectric scanning imaging recognition device 21 to prevent dust from being adsorbed on the photoelectric scanning imaging recognition device 21 and affecting the imaging quality, ensuring the accurate scanning and recognition of gangue and coal, thereby improving the accuracy of subsequent separation and preventing the device from being affected by dust;

[0045] The main body 1 of the coal preparation device is provided with an intermittent cleaning mechanism 5 for cleaning the photoelectric scanning imaging recognition device 21. The intermittent cleaning mechanism 5 includes a guide rail rod 51 arranged on the dust removal seat 3 and a first slider 52 sleeved on the guide rail rod 51. A cleaning roller main body 53 is rotatably connected to the first slider 52. The intermittent cleaning mechanism 5 is used to clean the surface of the photoelectric scanning imaging recognition device 21 to ensure clear imaging of the photoelectric scanning imaging recognition device 21. The guide rail rod 51 provides a lower position for the first slider 52, and the first slider 52 provides a limit for the cleaning roller main body 53;

[0046] A connecting frame 54 is fixedly connected to the first slider 52. An activity rail 55 is fixedly connected to the connecting frame 54. A second slider 56 is slidably connected inside the activity rail 55. The intermittent cleaning mechanism 5 further includes a first transmission wheel 57, a second transmission wheel 58, and a third transmission wheel 59 rotatably connected to the inner wall of the main body 1 of the coal preparation device. A first transmission belt 571 is sleeved on the first transmission wheel 57, the second transmission wheel 58, and the third transmission wheel 59. A limit shaft 561 is fixedly connected to the first transmission belt 571. The limit shaft 561 is rotatably connected to the second slider 56. A driving component 7 is arranged on the first transmission wheel 57;

[0047] In the intermittent cleaning mechanism 5, power is provided by the drive assembly 7. The drive assembly 7 drives the first transmission wheel 57 to rotate. The first transmission wheel 57 drives the first transmission belt 571 to rotate. The first transmission belt 571 drives the second transmission wheel 58 and the third transmission wheel 59 to rotate. The first transmission belt 571 simultaneously drives the limit shaft 561 to move. The limit shaft 561 drives the second slider 56 to move. When the second slider 56 moves, it moves along the rotation trajectory of the first transmission belt 571. When the second slider 56 is at the leftmost position of the first transmission belt 571, the second slider 56 slides inside the movable track 55, and the body of the movable track 55 does not move. Therefore, at this stage, the connecting frame 54, the first slider 52, and the cleaning roller body 53 are stationary. When the second slider 56 disengages from the leftmost position of the first transmission belt 571, the second slider 56 drives the movable track 55 to move horizontally, and the moving process is a reciprocating motion. Therefore, at this stage, the movable track 55 drives the connecting frame 54, the first slider 52, and the cleaning roller body 53 to perform a reciprocating motion, so that the cleaning roller body 53 cleans the surface of the photoelectric scanning imaging recognition device 21.

[0048] The second aspect of the present invention provides a method for using a dry coal separation device. The method for using includes the following steps. Step S1, place the raw materials in the feed hopper 11 and convey them through the mixing conveyor 12 so that the raw materials are laid flat on the mixing conveyor 12.

[0049] Step S2, when the raw materials pass through the sorting unit 2, perform image scanning and recognition through the photoelectric scanning imaging recognition device 21 to locate the positions of coal and gangue.

[0050] Step S3, when the raw materials pass through the end of the mixing conveyor 12 and fall, perform air jet blowing through the sorting execution device 22 to apply air flow to the located gangue so that the gangue and coal are separated.

[0051] Step S4, during the process of the photoelectric scanning imaging recognition device 21 performing image recognition, apply negative pressure to the position of the dust suction groove 31 through the dust removal fan connecting pipe 32 so that an air curtain is formed around the bottom of the photoelectric scanning imaging recognition device 21 to prevent dust from adhering to the photoelectric scanning imaging recognition device 21.

[0052] Step S5, during the operation of the device, synchronously clean the surface of the photoelectric scanning imaging recognition device 21 through the intermittent cleaning mechanism 5 to prevent dust from adhering, ensure clear imaging and accurate recognition of the photoelectric scanning imaging recognition device 21. To prevent the cleaning roller body 53 on the intermittent cleaning mechanism 5 from affecting the photoelectric scanning imaging recognition device 21, a dual-station design can be provided for the sensors and probes inside the photoelectric scanning imaging recognition device 21. When the cleaning roller body 53 moves to the first station, start the sensors and probes at the second station. When the cleaning roller body 53 moves to the second station, start the sensors and probes at the first station.

[0053] The driving assembly 7 includes a fourth transmission wheel 71 fixedly connected to the driving shaft of the mixing conveyor 12 and a fifth transmission wheel 72 arranged on the rotating shaft of the first transmission wheel 57. A second transmission belt 73 is sleeved on the fifth transmission wheel 72 and the fourth transmission wheel 71. The structure of the driving assembly 7 in this device is simple. In the driving assembly 7, power is provided by the rotating shaft of the mixing conveyor 12. The motor inside the mixing conveyor 12 drives the mixing conveyor 12 to operate, and at the same time drives the fourth transmission wheel 71 to rotate. The fourth transmission wheel 71 drives the second transmission belt 73 to rotate, and the second transmission belt 73 drives the fifth transmission wheel 72 to rotate. Since the fifth transmission wheel 72 and the first transmission wheel 57 rotate, the first transmission wheel 57 is driven to rotate, thereby driving the intermittent cleaning mechanism 5 to work.

[0054] Inside the main body 1 of the coal preparation device, there is a cleaning roller cleaning assembly 8 for cleaning the cleaning roller main body 53. The cleaning roller cleaning assembly 8 includes a cleaning roller brush 84 rotatably connected to the main body 1 of the coal preparation device. A seventh transmission wheel 82 is arranged on the rotating shaft of the cleaning roller brush 84, and a sixth transmission wheel 81 is arranged on the second transmission wheel 58. A third transmission belt 83 is sleeved on the sixth transmission wheel 81 and the seventh transmission wheel 82. Through the design of the cleaning roller cleaning assembly 8 in this device, the cleaning roller main body 53 in the intermittent cleaning mechanism 5 is cleaned, ensuring the surface cleanliness of the cleaning roller main body 53, so as to achieve a good cleaning effect on the photoelectric scanning imaging recognition device 21;

[0055] When the second slider 56 is at the leftmost position of the first transmission belt 571, at this time the second slider 56 slides along the inside of the movable rail 55, and the movable rail 55 body does not move. Therefore, at this stage, the connecting frame 54, the first slider 52 and the cleaning roller main body 53 are in the initial position, and the cleaning roller main body 53 is below the cleaning roller brush 84. Since the driving assembly 7 drives the first transmission wheel 57, the first transmission belt 571, the second transmission wheel 58 and the third transmission wheel 59 to rotate, the second transmission wheel 58 drives the sixth transmission wheel 81 to rotate at this time, the sixth transmission wheel 81 drives the third transmission belt 83 to rotate, the third transmission belt 83 drives the seventh transmission wheel 82 to rotate, and the seventh transmission wheel 82 drives the cleaning roller brush 84 to rotate. Therefore, the cleaning roller brush 84 pats the cleaning roller main body 53 to ensure the surface cleanliness of the cleaning roller main body 53. The dust slapped off is negatively absorbed through the dust suction groove 31 and the dust removal fan connecting pipe 32.

[0056] The cleaning roller cleaning assembly 8 also includes a rubber strip 85 fixedly connected to the bottom of the dust removal seat 3. The cleaning roller brush 84 contacts the rubber strip 85 when it rotates. The cleaning roller cleaning assembly 8 is designed with the rubber strip 85. When the cleaning roller brush 84 rotates, the cleaning roller brush 84 itself slaps and rubs against the rubber strip 85, thereby removing dust from the cleaning roller brush 84 and the rubber strip 85. The fallen dust is negatively absorbed by the dust suction groove 31 and the dust removal fan connecting pipe 32, thereby ensuring that the cleaning roller cleaning assembly 8 has a good cleaning effect on the cleaning roller body 53 of the intermittent cleaning mechanism 5, and preventing dust from caking on the cleaning roller body 53 and affecting the cleaning work of the photoelectric scanning imaging recognition device 21.

[0057] Positioning blocks 211 are provided on both sides of the photoelectric scanning imaging identification device 21, and a locking assembly 6 for limiting the positioning block 211 is provided on the top of the coal preparation device body 1. The locking assembly 6 includes a fixed frame 61 fixedly connected to the coal preparation device body 1, and a locking rod 62 is movably connected to the fixed frame 61. A locking hole 212 is opened on the positioning block 211, and the locking rod 62 is movably connected in the locking hole 212. A guide frame 63 is fixedly connected to the fixed frame 61, and a screw rod 64 is threadedly connected to the guide frame 63. A push block 65 is rotatably connected to the screw rod 64, and the push block 65 is slidably connected to the guide frame 63. The push block 65 is used to support the locking rod 62, and a handle 213 is provided on the positioning block 211. The design of the handle 213 and the positioning block 211 makes it easy to take the photoelectric scanning imaging identification device 21. Combined with the design of the locking assembly 6, the photoelectric scanning imaging identification device 21 is easy to disassemble and assemble, and the photoelectric scanning imaging identification device 21 is easy to maintain.

[0058] The locking assembly 6 makes it easy to disassemble and assemble the photoelectric scanning imaging recognition device 21. When the photoelectric scanning imaging recognition device 21 needs to be installed, first align the photoelectric scanning imaging recognition device 21 with the inside of the mounting seat 4 and snap it in. After it is fully snapped in, the photoelectric scanning imaging recognition device 21 drives the positioning block 211 to be placed between the two sets of fixing frames 61. At this time, the screw rod 64 is rotated to make the screw rod 64 spirally rotate and push the push block 65 to move, and the push block 65 drives the locking rod 62 to move. When the locking rod 62 is controlled to be inserted into the locking hole 212, the positioning block 211 and the photoelectric scanning imaging recognition device 21 are quickly locked in position. The installation of the photoelectric scanning imaging recognition device 21 is convenient, and the subsequent disassembly can be the opposite of the above-mentioned installation process. No external tools are required for disassembly and assembly. During installation, multiple sets of locking rods 62 can be inserted into the locking holes 212 at the same time, so as to achieve rapid fixation and convenient operation, thereby meeting the requirements of rapid maintenance.

[0059] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0060] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will also have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. A dry coal separation device, comprising a main body (1) of the coal separation device, wherein a feed hopper (11) and a mixing conveyor (12) are arranged on the main body (1) of the coal separation device, characterized in that, A separation unit (2) is installed on the main body (1) of the coal preparation device; The separation unit (2) includes a photoelectric scanning imaging recognition device (21) and a separation execution device (22) fixedly connected to the main body (1) of the coal preparation device. The photoelectric scanning imaging recognition device (21) is arranged above the mixing conveyor (12), and the separation execution device (22) is arranged at the end of the mixing conveyor (12); A dust removal seat (3) is provided on the main body (1) of the coal preparation device. An installation seat (4) for limiting the photoelectric scanning imaging recognition device (21) is fixedly connected to the inner side of the dust removal seat (3). A dust suction groove (31) is formed at the bottom of the dust removal seat (3), and a dust removal fan connecting pipe (32) communicating with the dust suction groove (31) is arranged on the side of the dust removal seat (3); An intermittent cleaning mechanism (5) for cleaning the photoelectric scanning imaging recognition device (21) is provided on the main body (1) of the coal preparation device. The intermittent cleaning mechanism (5) includes a guide rail rod (51) arranged on the dust removal seat (3) and a first slider (52) sleeved on the guide rail rod (51). A cleaning roller main body (53) is rotatably connected to the first slider (52); A connecting frame (54) is fixedly connected to the first slider (52). A movable rail (55) is fixedly connected to the connecting frame (54). A second slider (56) is slidably connected inside the movable rail (55). The intermittent cleaning mechanism (5) further includes a first driving wheel (57), a second driving wheel (58), and a third driving wheel (59) rotatably connected to the inner wall of the main body (1) of the coal preparation device. A first transmission belt (571) is sleeved on the first driving wheel (57), the second driving wheel (58), and the third driving wheel (59). A limiting shaft (561) is fixedly connected to the first transmission belt (571). The limiting shaft (561) is rotatably connected to the second slider (56). A driving component (7) is arranged on the first driving wheel (57); A cleaning roller cleaning component (8) for cleaning the cleaning roller main body (53) is arranged inside the main body (1) of the coal preparation device. The cleaning roller cleaning component (8) includes a cleaning roller brush (84) rotatably connected to the main body (1) of the coal preparation device. A seventh driving wheel (82) is arranged on the rotating shaft of the cleaning roller brush (84). A sixth driving wheel (81) is arranged on the second driving wheel (58). A third transmission belt (83) is sleeved on the sixth driving wheel (81) and the seventh driving wheel (82).

2. The dry coal separation device according to claim 1, characterized in that, The driving component (7) includes a fourth driving wheel (71) fixedly connected to the driving shaft of the mixing conveyor (12) and a fifth driving wheel (72) arranged on the rotating shaft of the first driving wheel (57). A second transmission belt (73) is sleeved on the fifth driving wheel (72) and the fourth driving wheel (71).

3. The dry coal separation device according to claim 2, characterized in that, The cleaning roller cleaning component (8) further includes a rubber strip (85) fixedly connected to the bottom of the dust removal seat (3). The cleaning roller brush (84) contacts the rubber strip (85) when rotating.

4. The dry coal separation device according to claim 3, characterized in that The sorting execution device (22) is provided with a multi-point nozzle (221) and a compressed gas delivery pipe (222). The compressed gas delivery pipe (222) is used to deliver compressed gas and eject the gangue identified by the photoelectric scanning imaging recognition device (21) through the multi-point nozzle (221).

5. The dry coal separation device according to claim 4, characterized in that, A coal conveyor (13) and a gangue conveyor (14) are provided on the main body (1) of the coal separation device. The coal conveyor (13) and the gangue conveyor (14) are arranged at the end of the mixing conveyor (12).

6. The dry coal separation device according to claim 5, wherein, Positioning blocks (211) are provided on both sides of the photoelectric scanning imaging recognition device (21). A locking assembly (6) for limiting the positioning blocks (211) is provided on the top of the main body (1) of the coal separation device. The locking assembly (6) includes a fixed frame (61) fixedly connected to the main body (1) of the coal separation device. A locking rod (62) is movably clamped on the fixed frame (61). A locking hole (212) is formed in the positioning block (211), and the locking rod (62) is movably clamped in the locking hole (212).

7. The dry coal separation device according to claim 6, characterized in that, A guide frame (63) is fixedly connected to the fixed frame (61). A lead screw (64) is threadedly connected to the guide frame (63). A push block (65) is rotatably connected to the lead screw (64). The push block (65) is slidably connected to the guide frame (63). The push block (65) is used to support the locking rod (62). A handle (213) is provided on the positioning block (211).

8. The usage method of a dry coal separation device according to claim 7, characterized in that, The usage method includes the following steps. Step S1: Place the raw materials in the feed hopper (11) and convey them through the mixing conveyor (12) so that the raw materials are laid flat on the mixing conveyor (12). Step S2: When the raw materials pass through the sorting unit (2), perform image scanning and recognition through the photoelectric scanning imaging recognition device (21) to locate the positions of coal and gangue. Step S3: When the raw materials pass through the end of the mixing conveyor (12) and fall, perform air blowing through the sorting execution device (22) to apply air flow to the located gangue so that the gangue and coal are separated. Step S4: During the image recognition process of the photoelectric scanning imaging recognition device (21), apply negative pressure to the position of the dust suction groove (31) through the dust removal fan connecting pipe (32) so that an air curtain is formed around the bottom of the photoelectric scanning imaging recognition device (21) to prevent dust from adhering to the photoelectric scanning imaging recognition device (21). Step S5: During the operation of the device, synchronously clean the surface of the photoelectric scanning imaging recognition device (21) through the intermittent cleaning mechanism (5) to prevent dust from adhering, ensure that the imaging of the photoelectric scanning imaging recognition device (21) is clear, and the recognition is accurate.

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