Dry coal preparation device and using method thereof

Abstract

The invention discloses a dry coal preparation device and a using method thereof, and relates to the technical field of coal preparation devices. The dry coal preparation device comprises a coal preparation device body, a feeding hopper and a mixing conveyor are arranged on the coal preparation device body, a separation unit is installed on the coal preparation device body, a dust removal base is arranged on the coal preparation device body, and an intermittent cleaning mechanism is arranged on the coal preparation device body. According to the dry coal preparation device, active and passive defense modes are adopted for dust in the device, the passive mode is that negative pressure is formed on the bottom area of a dust removal base through a dust collection groove, so that an air curtain is formed around photoelectric scanning imaging recognition equipment, and the active mode is that an intermittent cleaning mechanism is designed at the bottom of the photoelectric scanning imaging recognition equipment; the bottom of the photoelectric scanning imaging recognition equipment is automatically cleaned, so that the equipment does not need to be shut down regularly in the using process of the device, stable use of the equipment is guaranteed, and time and labor are saved during operation.

Description

Technical Field

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

[0002] The working principle of dry coal preparation equipment 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, airflow or shaking, the materials will be stratified according to the interference and sedimentation rules of the particles. Dry coal preparation technologies mainly include photoelectric coal preparation, wind coal preparation, air heavy medium fluidized bed coal preparation and selective crushing coal preparation. Among them, the main ones that have been applied on a large scale in industry are composite dry coal preparation and photoelectric coal preparation.

[0003] The photoelectric coal preparation process mainly includes the scanning and identification stage and the separation stage. In the scanning and identification stage, the coal sample is scanned by penetrating rays such as gamma rays or X-rays. After the rays penetrate the coal sample, they are received by the detector and converted into electrical signals. The processed signals are intelligently identified by using advanced imaging technology and artificial intelligence technology. By comparing the characteristic information of coal and gangue, such as reflectivity, absorption rate, etc., the coal and gangue can be distinguished. The separation stage includes an actuator. According to the results of intelligent identification, the actuator is controlled to separate coal and gangue. The actuator usually adopts high-pressure wind. During operation, dust is easily generated during the unloading and transportation process of the dry coal preparation device, and the dust adheres to the scanning equipment. The dust itself generates interference signals which mask the real signals of coal or gangue, resulting in inaccurate scanning results. The particles in the dust may also scatter or absorb part of the rays, affecting the transmittance of the electron beam through the sample, thereby reducing the penetration ability and signal strength of the rays, further affecting the imaging clarity and the accuracy of the scanning results. Therefore, during use, it is necessary to regularly shut down the equipment and open the maintenance panel to clean the internal scanning equipment position. This operation is cumbersome, time-consuming and labor-intensive, affecting the use of the equipment. In view of the shortcomings of the prior art, the present invention provides a dry coal preparation device and a method for using the same to solve the above problems. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a dry coal preparation device and a method for using the same, which adopts active and passive defense methods against dust inside the device. The passive method is to form a negative pressure on the bottom area of ​​the dust removal seat through a dust suction groove, so that an air curtain is formed 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 shut down the equipment regularly, thereby ensuring stable use of the equipment, saving time and effort in operation, and meeting use requirements.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A dry coal preparation device, comprising a coal preparation device body, the coal preparation device body is provided with a feed hopper and a mixing conveyor, and the coal preparation device body is installed with a separation unit;

[0006] The sorting unit comprises a photoelectric scanning imaging recognition device and a sorting execution device fixedly connected to the main body of the coal preparation 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] The main body of the coal preparation device is provided with a dust removal seat, the inner side of which is fixedly connected with a mounting seat for limiting the position of the photoelectric scanning imaging recognition device, the bottom of the dust removal seat is provided with a dust suction groove, and the side of the dust removal seat is provided with a dust removal fan connecting pipe connected to the dust suction groove;

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

[0009] Preferably, the first slider is fixedly connected to a connecting frame, the connecting frame is fixedly connected to a movable rail, the movable rail is slidably connected to the inside of the second slider, the intermittent cleaning mechanism also includes a first transmission wheel, a second transmission wheel and a third transmission wheel rotatably connected to the inner wall of the coal preparation device body, the first transmission wheel, the second transmission wheel and the third transmission wheel are sleeved with a first transmission belt, the first transmission belt is fixedly connected to a limiting shaft, the limiting shaft is rotatably connected to the second slider, and the first transmission wheel is provided with a driving assembly.

[0010] Preferably, the driving assembly 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, and the fifth transmission wheel and the fourth transmission wheel are sleeved with a second transmission belt.

[0011] Preferably, a cleaning roller cleaning assembly for cleaning the cleaning roller body is provided inside the main body of the coal preparation device, and the cleaning roller cleaning assembly includes a cleaning roller brush rotatably connected to the main body of the coal preparation 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 provided on the sixth transmission wheel and the seventh transmission wheel.

[0012] Preferably, the sweeping roller cleaning assembly further comprises a rubber strip fixedly connected to the bottom of the dust removal seat, and the cleaning roller brush contacts the rubber strip when rotating.

[0013] Preferably, the sorting execution equipment includes a multi-point nozzle and a compressed gas delivery pipe, and the compressed gas delivery pipe is used to deliver compressed gas and spray the gangue identified by the photoelectric scanning imaging identification device through the multi-point nozzle.

[0014] Preferably, a coal conveyor and a gangue conveyor are provided on the main body of the coal preparation device, and 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 photoelectric scanning imaging recognition device, and a locking assembly for limiting the positioning block is provided on the top of the coal selection device body, and the locking assembly includes a fixed frame fixedly connected to the coal selection device body, a locking rod is movably connected to the fixed frame, a locking hole is opened on the positioning block, and the locking rod is movably connected in the locking hole.

[0016] Preferably, the fixed frame is fixedly connected to a guide frame, the guide frame is threadedly connected to a screw rod, the screw rod is rotatably connected to a push block, the push block is slidably connected to the guide frame, the push block is used to support the locking rod, and the positioning block is provided with a handle.

[0017] A second aspect of the present invention provides a method for using a dry coal preparation device, the method comprising the following steps: step S1, placing raw materials in a feed hopper and conveying them through a mixing conveyor so that the raw materials are spread flat on the mixing conveyor;

[0018] Step S2, when the raw materials pass through the sorting unit, the photoelectric scanning imaging recognition device performs image scanning and recognition 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, the airflow is sprayed through the sorting execution equipment to apply airflow to the positioned gangue, so that the gangue and coal are separated;

[0020] Step S4, during the image recognition process of the photoelectric scanning imaging recognition device, negative pressure is applied to the dust suction slot through the dust removal fan connecting pipe, so that an air curtain is formed around the bottom of the photoelectric scanning imaging recognition device to prevent dust from being adsorbed on the photoelectric scanning imaging recognition device;

[0021] Step S5, during the operation of the device, the surface of the photoelectric scanning imaging recognition device is cleaned synchronously through an intermittent cleaning mechanism to prevent dust from adhering, thereby ensuring that the photoelectric scanning imaging recognition device can image clearly and recognize accurately.

[0022] The present invention discloses a dry coal separation device and a method for using the same, which have the following beneficial effects:

[0023] 1. The dry coal preparation device adopts active and passive defense methods for the dust inside the device. The passive method is to form a negative pressure on the bottom area of ​​the dust removal seat through the dust suction groove, so that an air curtain is formed around the photoelectric scanning imaging recognition device. On the one hand, dust is removed inside the main body of the coal preparation device, and on the other hand, an air curtain is formed around the bottom of the photoelectric scanning imaging recognition device to prevent dust from being adsorbed 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 to ensure that the imaging of the photoelectric scanning imaging recognition device is clear. Therefore, during the use of the device, there is no need to shut down the equipment regularly, which ensures that the equipment is stable in use, and the operation is time-saving and labor-saving, meeting the use requirements.

[0024] 2. In the dry coal preparation device, the intermittent cleaning mechanism adopts a driving component to provide driving force. The driving component has a compact structure and provides 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 roller body in the intermittent cleaning mechanism can be cleaned to ensure that the surface of the cleaning roller body is clean, thereby achieving a good cleaning effect on the photoelectric scanning imaging recognition equipment. The cleaning roller cleaning component is also provided with driving force by the driving component. Finally, the cleaning roller brush is used to beat the cleaning roller body to ensure that the surface of the cleaning roller body is clean. The dust that falls off is absorbed by the vacuum trough and the dust removal fan connecting pipe under negative pressure. When the equipment is started, the various components work synchronously, making the device design and operation reasonable, practical, and stable.

[0025] 3. The dry coal preparation device makes it easy to take the photoelectric scanning imaging recognition device through the design of the handle and the positioning block. Combined with the design of the locking component, the photoelectric scanning imaging recognition device is easy to disassemble and assemble, and the photoelectric scanning imaging recognition device is easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

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

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

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

[0030] Figure 4 It is a structural schematic diagram of the sorting execution device of the present invention;

[0031] Figure 5 It is a schematic diagram of the position of the dust collection slot of the present invention;

[0032] Figure 6 This is a disassembly diagram of the photoelectric scanning imaging recognition device of the present invention;

[0033] Figure 7 It is a structural schematic diagram of the locking assembly of the present invention;

[0034] Figure 8 It is a structural schematic diagram of the intermittent cleaning mechanism of the present invention;

[0035] Fig. 9 It is a structural schematic diagram of the connecting frame of the present invention;

[0036] Fig.10 It is a schematic diagram of the structure of the driving assembly and the cleaning roller cleaning assembly of the present invention.

[0037] In the figure: 1. Coal preparation device body; 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. Grip; 22. Sorting execution device; 221. Multi-point nozzle; 222. Compressed gas delivery pipe; 3. Dust removal seat; 31. Dust suction slot; 32. Dust removal fan connecting pipe; 4. Mounting seat; 5. Intermittent cleaning mechanism; 51. Guide rail; 52. First slider; 53. Cleaning roller body; 54. Connecting frame; 55, movable rail; 56, second slider; 561, limiting shaft; 57, first transmission wheel; 571, first transmission belt; 58, second transmission wheel; 59, third transmission wheel; 6, locking assembly; 61, fixing frame; 62, locking rod; 63, guide frame; 64, screw rod; 65, push block; 7, driving assembly; 71, fourth transmission wheel; 72, fifth transmission wheel; 73, second transmission belt; 8, cleaning roller cleaning assembly; 81, sixth transmission wheel; 82, seventh transmission wheel; 83, third transmission belt; 84, cleaning roller brush; 85, rubber strip. DETAILED DESCRIPTION

[0038] In order to make the purpose, 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. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] The embodiment of the present application solves the problem that dust is easily generated during the unloading and transportation process inside the dry coal preparation device by providing a dry coal preparation device and a method for using the same. The dust adheres to the lens or detector of the scanning device, which will reduce the imaging quality and make the scanned image blurred or distorted. The dust itself generates interference signals, which will mask the real signals of the coal or gangue, resulting in inaccurate scanning results. The particles in the dust may also scatter or absorb part of the rays, affecting the transmittance of the electron beam transmitted through the sample, thereby reducing the penetration ability and signal strength of the rays, further affecting the imaging clarity and the accuracy of the scanning results. Therefore, during use, it is necessary to shut down the equipment regularly and open the maintenance panel to clean the internal scanning equipment position. This operation is cumbersome, time-consuming and labor-intensive, and affects the use of the equipment.

[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 and specific implementation methods.

[0041] The embodiment of the present invention discloses a dry coal separation device. Figure 1 To Attachment Fig.10 As shown, the coal preparation device body 1 includes a feed hopper 11 and a mixing conveyor 12, which are provided on the coal preparation device body 1. The feed hopper 11 and the mixing conveyor 12 facilitate the feeding and conveying of raw materials. The coal preparation device body 1 is equipped with a sorting unit 2, which is used to separate coal and gangue;

[0042] The sorting unit 2 includes a photoelectric scanning imaging recognition device 21 and a sorting 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 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 main body 1 of the coal preparation device, and the coal conveyor 13 and the gangue conveyor 14 are arranged at the end of the mixed conveyor 12; the sorting execution equipment 22 includes a multi-point nozzle 221 and a compressed gas delivery pipe 222, and the compressed gas delivery pipe 222 is used to transport compressed gas and spray the gangue identified by the photoelectric scanning imaging recognition device 21 through the multi-point nozzle 221. The multi-point nozzle 221 and the compressed gas delivery pipe 222 are connected, and compressed gas is provided to the compressed gas delivery pipe 222 through an external air pressure device. The multi-point nozzle 221 at the corresponding position is precisely controlled by a computer to spray airflow, so that the airflow blows on each group of gangue, so that the gangue moves inside the gangue conveyor 14, and the coal falls naturally after the movement, and finally falls into the coal conveyor 13, so as to realize the rapid separation of coal and gangue.

[0044] A dust removal seat 3 is provided on the main body 1 of the coal preparation device. A mounting seat 4 for limiting the position of 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 provided at the bottom of the dust removal seat 3. A dust removal fan connecting pipe 32 connected to the dust suction groove 31 is provided on the side of the dust removal seat 3. The dust removal fan connecting pipe 32 is connected to an external negative pressure fan. Negative pressure is formed on 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, dust is removed from the inside of 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, thereby ensuring accurate scanning and recognition of gangue and coal, thereby improving the accuracy of subsequent sorting and preventing the equipment 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 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 that the imaging of the photoelectric scanning imaging recognition device 21 is clear. The guide rail rod 51 provides a lower position for the first slider 52, and the first slider 52 provides a limit position for the cleaning roller body 53.

[0046] The first slider 52 is fixedly connected to a connecting frame 54, the connecting frame 54 is fixedly connected to a movable rail 55, the movable rail 55 is slidably connected to a second slider 56, the intermittent cleaning mechanism 5 also includes a first transmission wheel 57, a second transmission wheel 58 and a third transmission wheel 59 which are rotatably connected to the inner wall of the coal preparation device body 1, the first transmission wheel 57, the second transmission wheel 58 and the third transmission wheel 59 are sleeved with a first transmission belt 571, the first transmission belt 571 is fixedly connected to a limiting shaft 561, the limiting shaft 561 is rotatably connected to the second slider 56, and the first transmission wheel 57 is provided with a driving assembly 7;

[0047] In the intermittent cleaning mechanism 5, the driving assembly 7 provides power, the driving 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 drives the limiting shaft 561 to move at the same time, the limiting shaft 561 drives the second slider 56 to move, when the second slider 56 moves, it moves along the rotation track 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 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 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 rail 55 to move laterally. The moving process is a reciprocating motion. Therefore, at this stage, the movable rail 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 preparation device, the method comprising the following steps: step S1, placing raw materials in a feed hopper 11, and conveying the raw materials through a mixing conveyor 12, so that the raw materials are spread flat on the mixing conveyor 12;

[0049] Step S2, when the raw materials pass through the sorting unit 2, the photoelectric scanning imaging recognition device 21 performs image scanning and recognition 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, the airflow is sprayed through the sorting execution device 22 to apply airflow to the positioned gangue, so that the gangue and coal are separated;

[0051] Step S4, during the image recognition process of the photoelectric scanning imaging recognition device 21, negative pressure is applied to the dust suction slot 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 being adsorbed on the photoelectric scanning imaging recognition device 21;

[0052] Step S5, during the operation of the equipment, the intermittent cleaning mechanism 5 is used to simultaneously clean the surface of the photoelectric scanning imaging recognition device 21 to avoid dust adhesion, thereby ensuring that the photoelectric scanning imaging recognition device 21 has clear imaging and accurate recognition. In order to avoid 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, the second-station sensor and probe are started; when the cleaning roller body 53 moves to the second station, the first-station sensor and probe are started.

[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. The fifth transmission wheel 72 and the fourth transmission wheel 71 are sleeved with a second transmission belt 73. The driving assembly 7 in the device has a simple structure. The driving assembly 7 is powered by the rotating shaft of the mixing conveyor 12. The motor inside the mixing conveyor 12 drives the mixing conveyor 12 to operate and also drives the fourth transmission wheel 71 to rotate. The fourth transmission wheel 71 drives the second transmission belt 73 to rotate. 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] A cleaning roller cleaning assembly 8 for cleaning the cleaning roller body 53 is provided inside the coal preparation device body 1. The cleaning roller cleaning assembly 8 includes a cleaning roller brush 84 rotatably connected to the coal preparation device body 1. A seventh transmission wheel 82 is provided on the rotating shaft of the cleaning roller brush 84. A sixth transmission wheel 81 is provided 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. The device realizes cleaning of the cleaning roller body 53 in the intermittent cleaning mechanism 5 through the design of the cleaning roller cleaning assembly 8, ensuring that the surface of the cleaning roller body 53 is clean, thereby achieving 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, 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 body 53 are in the initial position, and the cleaning roller 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, 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 beats the cleaning roller body 53 to ensure that the surface of the cleaning roller body 53 is clean, and the dust beaten off is absorbed by negative pressure 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 article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0060] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A dry coal preparation device, comprising a coal preparation device body (1), wherein the coal preparation device body (1) is provided with a feed hopper (11) and a mixing conveyor (12), characterized in that: A separation unit (2) is installed on the main body (1) of the coal separation device; The sorting unit (2) comprises a photoelectric scanning imaging recognition device (21) and a sorting execution device (22) fixedly connected to the main body (1) of the coal preparation device, wherein the photoelectric scanning imaging 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); The coal preparation device body (1) is provided with a dust removal seat (3), the inner side of which is fixedly connected with a mounting seat (4) for limiting the position of a photoelectric scanning imaging recognition device (21), the bottom of the dust removal seat (3) is provided with a dust suction groove (31), and the side of the dust removal seat (3) is provided with a dust removal fan connecting pipe (32) connected to the dust suction groove (31); The coal preparation device body (1) is provided with an intermittent cleaning mechanism (5) for cleaning the photoelectric scanning imaging identification device (21), the intermittent cleaning mechanism (5) comprising a guide rail rod (51) arranged on the dust removal seat (3) and a first slider (52) sleeved on the guide rail rod (51), the first slider (52) being rotatably connected with a cleaning roller body (53).

2. A dry coal separation device according to claim 1, characterized in that: The first slider (52) is fixedly connected to a connecting frame (54), the connecting frame (54) is fixedly connected to a movable rail (55), the movable rail (55) is slidably connected to a second slider (56) inside, the intermittent cleaning mechanism (5) further comprises a first transmission wheel (57), a second transmission wheel (58) and a third transmission wheel (59) rotatably connected to the inner wall of the coal preparation device body (1), the first transmission wheel (57), the second transmission wheel (58) and the third transmission wheel (59) are sleeved with a first transmission belt (571), the first transmission belt (571) is fixedly connected to a limiting shaft (561), the limiting shaft (561) is rotatably connected to the second slider (56), and the first transmission wheel (57) is provided with a driving assembly (7).

3. A dry coal separation device according to claim 2, characterized in that: The driving assembly (7) comprises 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), and a second transmission belt (73) is sleeved on the fifth transmission wheel (72) and the fourth transmission wheel (71).

4. A dry coal separation device according to claim 2, characterized in that: A cleaning roller cleaning assembly (8) for cleaning a cleaning roller body (53) is provided inside the main body (1) of the coal preparation device. The cleaning roller cleaning assembly (8) comprises a cleaning roller brush (84) rotatably connected to the main body (1) of the coal preparation device. A seventh transmission wheel (82) is provided on the rotating shaft of the cleaning roller brush (84). A sixth transmission wheel (81) is provided 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).

5. A dry coal separation device according to claim 4, characterized in that: The sweeping roller cleaning assembly (8) also includes a rubber strip (85) fixedly connected to the bottom of the dust removal seat (3), and the cleaning roller brush (84) contacts the rubber strip (85) when rotating.

6. A dry coal separation device according to claim 5, characterized in that: The sorting execution device (22) comprises a multi-point nozzle (221) and a compressed gas delivery pipe (222), wherein the compressed gas delivery pipe (222) is used to deliver compressed gas and spray the gangue identified by the photoelectric scanning imaging identification device (21) through the multi-point nozzle (221).

7. A dry coal separation device according to claim 6, characterized in that: The coal preparation device body (1) is provided with a coal conveyor (13) and a gangue conveyor (14), and the coal conveyor (13) and the gangue conveyor (14) are arranged at the end of the mixing conveyor (12).

8. A dry coal separation device according to claim 1, characterized in that: Positioning blocks (211) are provided on both sides of the photoelectric scanning imaging identification device (21); 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) comprises a fixing frame (61) fixedly connected to the coal preparation device body (1); a locking rod (62) is movably engaged with the fixing frame (61); a locking hole (212) is provided on the positioning block (211); and the locking rod (62) is movably engaged with the locking hole (212).

9. A dry coal separation device according to claim 8, characterized in that: The fixing frame (61) is fixedly connected to a guide frame (63), the guide frame (63) is threadedly connected to a screw rod (64), the screw rod (64) is rotatably connected to a push block (65), 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 the positioning block (211) is provided with a handle (213).

10. A method for using a dry coal separation device according to any one of claims 1 to 9, characterized in that: The method of use comprises the following steps: step S1, placing raw materials in a feed hopper (11), and conveying the raw materials through a mixing conveyor (12), so that the raw materials are spread flat on the mixing conveyor (12); Step S2, when the raw materials pass through the sorting unit (2), the photoelectric scanning imaging recognition device (21) performs image scanning and recognition 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, the airflow is sprayed through the sorting execution device (22), and the airflow is applied to the positioned gangue, so that the gangue and coal are separated; Step S4, during the image recognition process of the photoelectric scanning imaging recognition device (21), negative pressure is applied to 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 being adsorbed on the photoelectric scanning imaging recognition device (21); Step S5, during the operation of the device, the surface of the photoelectric scanning imaging recognition device (21) is cleaned synchronously through the intermittent cleaning mechanism (5) to prevent dust from adhering, thereby ensuring that the photoelectric scanning imaging recognition device (21) can image clearly and recognize accurately.

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