Intelligent dry separation-wet separation coupling process and system for full-size-fraction clean coal

Abstract

The invention discloses an intelligent dry separation-wet separation coupling process and system for full-size-fraction clean coal. The system comprises a separation platform, a dry separation module, a wet separation module and an intelligent control unit. The dry separation module comprises a feeding hopper, a vibration screening machine, a wind power sorting machine and a dry separation collecting box, and the wet separation module comprises a dense medium sorting machine, a flotation machine and a wet separation collecting box which are connected through a material conveying device. The system achieves efficient sorting and automatic cleaning through the driving assembly, the cleaning device and the positioning device, and the sorting precision and stability are improved. The problems of low efficiency and insufficient resource utilization rate caused by independent operation of a traditional sorting process can be solved, meanwhile, the intelligent level is improved, the production cost and energy consumption are reduced, the service life of equipment is prolonged, the maintenance frequency is reduced, and the system reliability and safety are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of coal separation and clean utilization, and particularly relates to an intelligent dry-wet separation coupling process and system for all-size clean coal. Background Art

[0002] In the existing coal separation processes, when dealing with all-size raw materials, dry separation and wet separation usually operate independently, resulting in limited separation efficiency, low resource utilization rate, insufficient intelligent level of the system, room for improvement in separation accuracy and stability, and increased production costs and energy consumption. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems that in the existing coal separation processes, when dealing with all-size raw materials, dry separation and wet separation usually operate independently, resulting in limited separation efficiency, low resource utilization rate, insufficient intelligent level of the system, room for improvement in separation accuracy and stability, and increased production costs and energy consumption, and to provide an intelligent dry-wet separation coupling process and system for all-size clean coal.

[0004] The present invention is realized as follows. An intelligent dry-wet separation coupling process and system for all-size clean coal includes a separation platform, a dry separation module, a wet separation module, and an intelligent control unit arranged on the separation platform. Among them, the dry separation module and the wet separation module are connected through a material conveying device. It is characterized in that an adjustment bracket is fixedly installed on the separation platform, a driving assembly is arranged on the adjustment bracket, a recovery pool is embedded on one side of the separation platform, and a positioning device is slidably installed in the recovery pool.

[0005] The dry separation module includes a feed hopper, a vibrating screen, a wind separator, and a dry separation collection box. The feed hopper, the vibrating screen, the wind separator, and the dry separation collection box are sequentially connected through a material conveying device. The wind separator is rotationally clamped with the positioning device.

[0006] The wind separator includes an outer cylinder, a separation cavity, and a top cover. The outer cylinder is rotationally clamped with the separation cavity, and the outer cylinder is rotationally clamped with the top cover. A guiding groove is formed on the inner wall of the outer cylinder. The relevant equipment in the wet separation module also includes an outer cylinder, a separation cavity, and a top cover.

[0007] The driving assembly includes a first gear disk that drives the wind separator to rotate. The first gear disk is fixedly connected to the outer side of the top cover. A second gear disk is meshed with one side of the first gear disk. One end of the adjustment bracket is fixedly installed with a driving motor, and the output shaft of the driving motor is fixedly connected to the second gear disk. A first gear disk is also fixedly connected to the outer side of the outer cylinder in the wet separation module, and the wind separator is meshed with the first gear disk in the wet separation module.

[0008] A cleaning device is arranged inside the outer cylinder. The cleaning device includes a support rod fixedly connected to the outer cylinder. A cleaning scraper is slidably sleeved on the outer surface of the support rod. A guide block is fixedly connected to the side end of the cleaning scraper. The guide block is slidably connected to a guide groove. When the driving motor drives the second gear disk to rotate, it drives the first gear disk to rotate the outer cylinder, so that the cleaning scraper moves in the guide groove to clean the outer surface of the sorting cavity.

[0009] As a further scheme of the present invention: The wet separation module includes a heavy medium separator, a flotation machine and a wet separation collection box. The recovery pool, the heavy medium separator, the flotation machine and the wet separation collection box are sequentially connected by a material conveying device. The feeding hopper, the vibrating screen, the air separator, the dry separation collection box, the heavy medium separator, the flotation machine and the wet separation collection box are sequentially connected by a material conveying device.

[0010] As a further scheme of the present invention: A limiting groove is opened at the lower end of the outer side of the outer cylinder, and an assembly groove is opened at the top end of the outer cylinder. A fixed cylinder is fixedly connected to the bottom end inside the outer cylinder. The fixed cylinder is rotationally clamped with the sorting cavity. The bottom end of the top cover is fixedly connected with an assembly block. The assembly block is rotationally clamped with the assembly groove. A circulation unit for controlling the inlet and outlet of materials is connected through the top cover.

[0011] As a further scheme of the present invention: A reset spring is fixedly connected to one end inside the recovery pool, and a push plate is fixedly connected to the other end of the reset spring. A guide groove is opened at the side end of the recovery pool. The positioning device is slidably connected to the guide groove.

[0012] As a further scheme of the present invention: A baffle is fixedly connected to the upper end of the guide groove, and a hydraulic cylinder is fixedly connected to the top end of the baffle. The movable end of the hydraulic cylinder penetrates through the baffle and is inserted into the guide groove. A switching block is arranged inside the recovery pool. A plug board is fixedly connected to the side end of the switching block. The plug board is inserted into the positioning device. A rotating groove is opened at the top end of the recovery pool. The switching block is rotatably connected to the rotating groove.

[0013] As a further scheme of the present invention: The positioning device includes a base slidably connected to the bottom end inside the recovery pool. A buffer spring is fixedly connected to the top end of the base. A support seat is fixedly connected to the top end of the buffer spring. A connecting piece is fixedly connected to the side end of the support seat. The connecting piece is adapted to the guide groove. A slot is opened at the side end of the support seat. The plug board is inserted into the slot. An installation ring is fixedly connected to the top end of the support seat. The outer cylinder is rotationally inserted into the installation ring. A limiting component is arranged at the side end of the installation ring.

[0014] As a further scheme of the present invention: The limiting component includes a shell fixedly connected to the installation ring. A limiting pin is slidably inserted into the shell. The limiting pin penetrates through the installation ring and is inserted into the limiting groove. A return spring is arranged between the limiting pin and the inner wall of the shell.

[0015] As a further solution of the present invention: a fixed column is rotatably connected to the outside of the top cover, the fixed column is fixedly connected to the adjusting bracket, the top cover is arranged inside the fixed column and is rotatably connected to the fixed column.

[0016] As a further solution of the present invention: it includes the following steps:

[0017] First, start the driving motor to drive the second gear disk to drive the first gear disk to rotate, so that the outer cylinders in the air separation machine and the wet separation module rotate. When the outer cylinders in the air separation machine and the wet separation module rotate, the limit pin is engaged with the limit groove. At this time, the outer cylinder stops rotating, and the top cover continues to rotate until the assembly block is disengaged from the assembly groove. Then start the hydraulic cylinder to press the connecting piece into the guide groove, release the restriction on the return spring, so that the return spring pushes the push plate to move, and at the same time push the positioning device to make the plug board inserted into the plug slot;

[0018] After that, push the switching block to rotate along the rotation groove, so that the used outer cylinder and the separation cavity in the air separation machine and the wet separation module on one side of the switching block are interchanged with the unused outer cylinder and the separation cavity in the air separation machine and the wet separation module on the other side of the switching block. Then, push the unused outer cylinder and the separation cavity in the air separation machine and the wet separation module until the connecting piece on the positioning device on the side of the unused air separation machine and wet separation module moves to the end of the guide groove, and under the action of the buffer spring, the assembly block is inserted into the assembly groove. Then, by starting the driving motor, the second gear disk drives the first gear disk to rotate, so that the top cover in the air separation machine and the wet separation module rotates in the reverse direction, and the assembly block is engaged with the assembly groove;

[0019] Finally, the driving motor continues to drive the top cover in the air separation machine and the wet separation module to rotate in the reverse direction. During the rotation, the limit pin abuts against the arc surface of the limit groove, and under the action of the buffer spring, the limit pin retracts into the shell, so that the outer cylinder rotates together with the top cover. At this time, the guide block moves up and down under the action of the guide groove on the inner wall of the outer cylinder, so that the cleaning scraper cleans the outer surface of the separation cavity.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] In the present invention, through the cooperation of the cleaning device and the driving motor, the cleaning operation can be automatically performed regularly, reducing the need for manual intervention and management, making the cleaning process convenient and efficient. Regular cleaning can prevent the accumulation of dirt on the surface of the separation cavity, reduce the decline in separation efficiency caused by dirt adhesion, extend the service life of the separation equipment, and reduce the frequency and cost of replacement and maintenance;

[0022] In the present invention, through the rotational snap connection between the outer cylinder and the top cover, the assembly and disassembly processes are ensured to be simple and convenient, which is beneficial to the operation efficiency during the maintenance and replacement of the sorting equipment. The recycling pool can effectively prevent the material leakage problem that may occur in the sorting system, improving the reliability and safety of the system. The return spring can automatically push the push plate, facilitating the system maintenance and repair by the operator when needed and reducing the downtime.

[0023] In the present invention, the buffer spring provides the necessary buffering and support to ensure the stable operation of the sorting equipment during operation, reducing vibration and noise. The connecting piece and the slot make the replacement and maintenance of the sorting equipment components more simple and efficient.

[0024] In the present invention, the limit pin ensures the correct position of the sorting equipment during rotation through the limit slot, avoiding damage to components due to misoperation or excessive rotation. The return spring helps the limit pin to automatically reset when needed, ensuring the normal operation when the system is restarted. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is the overall structural schematic diagram of the present invention, showing the layout relationship of the sorting platform, dry sorting module, wet sorting module and intelligent control unit, as well as the connection mode of the material conveying device.

[0026] Figure 2 is the cross-sectional structural schematic diagram of the air separator in the present invention, highlighting the rotational snap connection relationship between the outer cylinder, sorting cavity and top cover, as well as the working principle of the cleaning device.

[0027] The reference numerals are as follows: 1, sorting platform; 2, dry sorting module; 3, wet sorting module; 4, intelligent control unit; 5, material conveying device; 6, adjusting bracket; 7, driving component; 8, recycling pool; 9, positioning device; 10, air separator; 11, outer cylinder; 12, sorting cavity; 13, top cover; 14, cleaning device; 15, first gear disk; 16, second gear disk; 17, driving motor; 18, return spring; 19, push plate; 20, switching block; 21, limiting component; 22, limit pin; 23, return spring. DETAILED DESCRIPTION OF THE INVENTION

[0028] The present invention provides an intelligent dry-wet separation coupling process and system for full-grain clean coal, and its core components include a sorting platform 1, a dry sorting module 2, a wet sorting module 3, an intelligent control unit 4, a material conveying device 5, an adjusting bracket 6, a driving component 7, a recycling pool 8, a positioning device 9, an air separator 10, an outer cylinder 11, a sorting cavity 12, a top cover 13, a cleaning device 14, a first gear disk 15, a second gear disk 16, a driving motor 17, a return spring 18, a push plate 19, a switching block 20, a limiting component 21, a limit pin 22 and a return spring 23. The following will describe the specific embodiments of the present invention in detail with reference to the accompanying drawings.

[0029] As shown Figure 1 in the figure, the sorting platform 1 is the bearing foundation of the whole system, on which an adjusting bracket 6 is fixedly installed. The adjusting bracket 6 is used to support and adjust the position of the driving component 7 to drive the air separation machine 10 and the wet separation module 3. A recovery tank 8 is embedded on one side of the sorting platform 1. A positioning device 9 is slidably installed in the recovery tank 8. The positioning device 9 is connected with the guide groove in a matching manner and is used to accurately position and switch the materials during the sorting process. The material conveying device 5 penetrates through the dry separation module 2 and the wet separation module 3, connecting the feed hopper, the vibrating screen, the air separation machine 10, the dry separation collection box, the heavy medium separator, the flotation machine and the wet separation collection box in sequence to form a complete material flow path.

[0030] The dry separation module 2 includes a feed hopper, a vibrating screen, an air separation machine 10 and a dry separation collection box. The feed hopper is connected with the vibrating screen through the material conveying device 5. The discharge end of the vibrating screen is connected with the air separation machine 10, and the discharge end of the air separation machine 10 is connected with the dry separation collection box. The structure of the air separation machine 10 is as Figure 2 shown in the figure. It includes an outer cylinder 11, a sorting cavity 12 and a top cover 13. The outer cylinder 11 is rotationally clamped with the sorting cavity 12, and the outer cylinder 11 is also connected with the top cover 13 in a rotationally clamped manner. Guide grooves are opened on the inner wall of the outer cylinder 11 to guide the cleaning scraper in the cleaning device 14 to move. A fitting block is fixedly connected to the bottom end of the top cover 13, and the fitting block is rotationally clamped with the fitting groove at the top end of the outer cylinder 11 to ensure the stable connection between the top cover 13 and the outer cylinder 11. A circulation unit is connected through the top cover 13 to control the entry and exit of materials.

[0031] The driving component 7 includes a first gear disk 15, a second gear disk 16 and a driving motor 17. The first gear disk 15 is fixedly connected to the outside of the top cover 13. A second gear disk 16 is meshed with one side of the first gear disk 15. One end of the adjusting bracket 6 is fixedly installed with a driving motor 17, and the output shaft of the driving motor 17 is fixedly connected with the second gear disk 16. When the driving motor 17 is started, the second gear disk 16 drives the first gear disk 15 to rotate, thereby driving the outer cylinder 11 in the air separation machine 10 and the wet separation module 3 to rotate. A first gear disk 15 is also fixedly connected to the outside of the outer cylinder 11 in the wet separation module 3, and the first gear disks 15 in the air separation machine 10 and the wet separation module 3 are meshed with each other to ensure that the two parts of equipment can operate synchronously.

[0032] The cleaning device 14 includes a support rod, a cleaning scraper, and a guide block. The support rod is fixedly connected to the outer cylinder 11. The cleaning scraper is slidably sleeved on the outer surface of the support rod. A guide block is fixedly connected to the side end of the cleaning scraper, and the guide block is slidably connected to the guide groove on the inner wall of the outer cylinder 11. When the driving motor 17 drives the second gear disk 16 to rotate, the first gear disk 15 drives the outer cylinder 11 to rotate, and the cleaning scraper moves in the guide groove to clean the outer surface of the sorting cavity 12 in the outer cylinder 11. This design ensures the timely removal of dirt on the surface of the sorting cavity 12 and avoids affecting the sorting efficiency due to dirt accumulation.

[0033] The wet separation module 3 includes a heavy medium separator, a flotation machine, and a wet separation collection box. The recovery tank 8, the heavy medium separator, the flotation machine, and the wet separation collection box are sequentially connected by a material conveying device 5. The relevant equipment in the wet separation module 3 also includes an outer cylinder 11, a sorting cavity 12, and a top cover 13, and its structure is the same as that of the air separation machine 10, ensuring the compatibility and coordination between the dry separation and the wet separation module 3.

[0034] The internal structure of the recovery tank 8 is as Figure 2 shown. One end inside it is fixedly connected with a return spring 18, and the other end of the return spring 18 is fixedly connected with a push plate 19. The push plate 19 can slide in the recovery tank 8. A guide groove is opened at the side end of the recovery tank 8, and the positioning device 9 is slidably connected with the guide groove. A baffle is fixedly connected to the upper end of the guide groove, and a hydraulic cylinder is fixedly connected to the top of the baffle. The movable end of the hydraulic cylinder penetrates the baffle and is inserted into the guide groove. A switching block 20 is arranged in the recovery tank 8. An insertion plate is fixedly connected to the side end of the switching block 20, and the insertion plate is inserted into the positioning device 9. A rotation groove is opened at the top of the recovery tank 8, and the switching block 20 is rotatably connected with the rotation groove for realizing the rapid switching of the sorting equipment.

[0035] The positioning device 9 includes a base, a buffer spring, a support seat, a connecting piece, and an installation ring. The base is slidably connected to the inner bottom end of the recovery tank 8. A buffer spring is fixedly connected to the top of the base, and a support seat is fixedly connected to the top of the buffer spring. A connecting piece is fixedly connected to the side end of the support seat, and the connecting piece is adapted to the guide groove. A slot is opened at the side end of the support seat, and the insertion plate is inserted into the slot. An installation ring is fixedly connected to the top of the support seat, and the outer cylinder 11 is rotatably inserted into the installation ring. A limiting component 21 is arranged at the side end of the installation ring. The limiting component 21 includes a shell, a limiting pin 22, and a return spring 23. The shell is fixedly connected to the installation ring. The limiting pin 22 is slidably inserted into the shell. The limiting pin 22 penetrates the installation ring and is inserted into the limiting groove. A return spring 23 is arranged between the limiting pin 22 and the inner wall of the shell. The cooperation relationship between the limiting pin 22 and the limiting groove is as Figure 2 shown. The limiting pin 22 ensures the correct position of the sorting equipment during rotation through the limiting groove, avoiding damage to components due to misoperation or excessive rotation.

[0036] A fixed column is rotatably connected to the outside of the top cover 13. The fixed column is fixedly connected to the adjusting bracket 6. The top cover 13 is arranged inside the fixed column and is rotatably connected to the fixed column. This design ensures that the top cover 13 can rotate flexibly under the action of the driving motor 17 while maintaining a firm connection with the outer cylinder 11.

[0037] The working process of the present invention is as follows: First, start the driving motor 17 to drive the second gear disk 16 to drive the first gear disk 15 to rotate, thereby driving the outer cylinder 11 in the air separation machine 10 and the wet separation module 3 to rotate. When the outer cylinder 11 rotates until the limit pin 22 is engaged with the limit groove, the outer cylinder 11 stops rotating, and the top cover 13 continues to rotate until the assembly block is disengaged from the assembly groove. At this time, start the hydraulic cylinder to press the connecting piece into the guide groove, release the restriction on the return spring 18, so that the return spring 18 pushes the push plate 19 to move, and at the same time pushes the positioning device 9 to insert the plug board into the plug slot. Then push the switching block 20 to rotate along the rotation groove, so that the used outer cylinder 11 and the separation cavity 12 in the air separation machine 10 and the wet separation module 3 are interchanged with the unused outer cylinder 11 and the separation cavity 12. Then push the unused outer cylinder 11 and the separation cavity 12 until the connecting piece on the positioning device 9 on the unused side moves to the end of the guide groove, and under the action of the buffer spring, the assembly block is inserted into the assembly groove. Then start the driving motor 17 to drive the second gear disk 16 to drive the first gear disk 15 to rotate in the reverse direction, so that the top cover 13 rotates in the reverse direction until the assembly block is engaged with the assembly groove. Finally, the driving motor 17 continues to drive the top cover 13 to rotate in the reverse direction, the limit pin 22 abuts against the arc surface of the limit groove and retracts into the shell under the action of the buffer spring, so that the outer cylinder 11 rotates together with the top cover 13. At this time, the guide block moves up and down under the action of the guide groove on the inner wall of the outer cylinder 11, so that the cleaning scraper cleans the outer surface of the separation cavity 12.

[0038] In the above-mentioned embodiment, the connection relationship, position relationship and mutual cooperation relationship between the various components are precisely designed to ensure that the entire system can operate efficiently and stably. Through this system, the intelligent dry separation and wet separation coupling of all-grain clean coal is realized, significantly improving the separation efficiency and resource utilization rate, while reducing the production cost and energy consumption.

[0039] In order to better enable the relevant personnel in the technical field to fully understand and implement the present invention, the specific implementation principle of the present invention is further supplemented below in combination with a specific application scenario.

[0040] In the actual scenario of coal separation, first, the full-size raw materials to be separated are fed into the system through the feed hopper. The material conveying device 5 conveys the raw materials from the feed hopper to the vibrating screen. The vibrating screen conducts preliminary screening on the raw materials, separates coal particles of different particle sizes, and guides them into the air separator 10. At this time, the outer cylinder 11 in the air separator 10 is in a rotating and clamping state with the separation cavity 12. The top cover 13 is tightly connected to the assembly groove at the top of the outer cylinder 11 through the assembly block, ensuring the sealing and stability of the separation process.

[0041] After starting the driving motor 17, the second gear disk 16 drives the first gear disk 15 to rotate, thereby driving the outer cylinder 11 in the air separator 10 and the wet separation module 3 to rotate synchronously. When the outer cylinder 11 rotates until the limit pin 22 is engaged with the limit groove, the outer cylinder 11 stops rotating, while the top cover 13 continues to rotate until the assembly block is disengaged from the assembly groove. During this process, the cooperation between the limit pin 22 and the limit groove ensures the precise positioning of the outer cylinder 11 during rotation, avoiding equipment damage caused by excessive rotation. At the same time, the hydraulic cylinder is activated and presses the connecting piece into the guide groove, releasing the restriction on the return spring 18, causing the return spring 18 to push the push plate 19 to move, and then pushing the positioning device 9, so that the insertion plate is inserted into the insertion slot. This design realizes the rapid positioning and stable operation of the separation equipment during the switching process.

[0042] Subsequently, the switching block 20 is pushed to rotate along the rotating groove to complete the switching of the outer cylinder 11 and the separation cavity 12 in the used air separator 10 and the wet separation module 3. After the switching is completed, the unused outer cylinder 11 and the separation cavity 12 are pushed to the working position until the connecting piece on the positioning device 9 on the unused side moves to the end of the guide groove, and under the action of the buffer spring, the assembly block is reinserted into the assembly groove. The design of the buffer spring not only provides the necessary supporting force but also effectively reduces the vibration and impact during the equipment switching process, ensuring the smooth operation of the system.

[0043] Then, start the driving motor 17 to make the second gear disk 16 drive the first gear disk 15 to rotate in the reverse direction, so that the top cover 13 rotates in the reverse direction until the assembly block is engaged with the assembly groove. Finally, the driving motor 17 continues to drive the top cover 13 to rotate in the reverse direction, the limit pin 22 abuts against the arc surface of the limit groove and retracts into the housing under the action of the return spring 23, causing the outer cylinder 11 to rotate together with the top cover 13. During this process, the cleaning scraper in the cleaning device 14 moves up and down in the guide groove to clean the outer surface of the separation cavity 12 in the outer cylinder 11. The moving path of the cleaning scraper is precisely guided by the guide groove, ensuring that the dirt on the surface of the separation cavity 12 can be thoroughly removed, thereby avoiding the influence of dirt accumulation on the separation efficiency.

[0044] The materials after dry separation are fed into the wet separation module 3 through the material conveying device 5. In the wet separation module 3, the heavy medium separator and the flotation machine sequentially further separate the materials, and finally collect the clean coal into the wet separation collection box. During the whole separation process, the intelligent control unit 4 monitors the operation status of each module in real time and adjusts the rotation speed of the drive motor 17 and the actions of the hydraulic cylinders as needed to ensure the intelligence and high efficiency of the separation process.

[0045] In the above steps, the synergistic effect among various components significantly improves the separation efficiency and resource utilization rate. For example, the synchronous operation of the air separation machine 10 and the wet separation module 3 reduces the time loss of independent operation of dry separation and wet separation in the traditional process; the automatic cleaning function of the cleaning device 14 reduces the need for manual intervention and prolongs the service life of the equipment at the same time; the design of the recovery pool 8 effectively prevents the problem of material leakage and improves the reliability and safety of the system.

[0046] Through the implementation of the above specific application scenarios, the present invention realizes the intelligent coupling of dry separation and wet separation of clean coal with all particle sizes, solves the problems of limited separation efficiency, low resource utilization rate and insufficient intelligence level in the prior art, and significantly reduces the production cost and energy consumption at the same time.

[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent dry-wet separation coupling process and system for all-size clean coal, comprising a separation platform (1), a dry separation module (2), a wet separation module (3) and an intelligent control unit (4) arranged on the separation platform (1), wherein the dry separation module (2) is connected to the wet separation module (3) through a material conveying device (5), characterized in that, An adjustment bracket (6) is fixedly installed on the sorting platform (1). A driving assembly (7) is arranged on the adjustment bracket (6). A recovery tank (8) is embedded on one side of the sorting platform (1). A positioning device (9) is slidably installed in the recovery tank (8).

2. The intelligent dry-wet separation coupling system for all-size clean coal according to claim 1, wherein The dry separation module (2) includes a feed hopper, a vibrating screen, a pneumatic separator (10) and a dry separation collection box. The feed hopper, the vibrating screen, the pneumatic separator (10) and the dry separation collection box are sequentially connected through a material conveying device (5). The pneumatic separator (10) is rotationally and detachably connected to the positioning device (9).

3. The intelligent dry-wet separation coupling system for all-size clean coal according to claim 2, wherein The pneumatic separator (10) includes an outer cylinder (11), a separation cavity (12) and a top cover (13). The outer cylinder (11) is rotationally and detachably connected to the separation cavity (12). The outer cylinder (11) is rotationally and detachably connected to the top cover (13). Guide grooves are formed on the inner wall of the outer cylinder (11). The related devices in the wet separation module (3) also include an outer cylinder (11), a separation cavity (12) and a top cover (13).

4. The full-grain clean coal intelligent dry-wet separation coupling system according to claim 3, wherein The driving assembly (7) includes a first gear disk (15) that drives the pneumatic separator (10) to rotate. The first gear disk (15) is fixedly connected to the outer side of the top cover (13). A second gear disk (16) is meshed and connected to one side of the first gear disk (15). One end of the adjustment bracket (6) is fixedly installed with a driving motor (17). The output shaft of the driving motor (17) is fixedly connected to the second gear disk (16). The outer side of the outer cylinder (11) in the wet separation module (3) is also fixedly connected with a first gear disk (15). The pneumatic separator (10) is meshed and connected to the first gear disk (15) in the wet separation module (3).

5. The intelligent dry-wet separation coupling system for all-grain clean coal according to claim 4, characterized in that, A cleaning device (14) is arranged in the outer cylinder (11). The cleaning device (14) includes a support rod fixedly connected to the outer cylinder (11). A cleaning scraper is slidably sleeved on the outer surface of the support rod. A guide block is fixedly connected to the side end of the cleaning scraper. The guide block is slidably connected to the guide groove. When the driving motor (17) drives the second gear disk (16) to rotate, it drives the first gear disk (15) to rotate the outer cylinder (11), so that the cleaning scraper moves in the guide groove to clean the outer surface of the separation cavity (12).

6. The intelligent dry-wet coupled coal separation system for all-size clean coal according to claim 1, characterized in that The wet separation module (3) includes a heavy medium separator, a flotation machine and a wet separation collection box. The recovery tank (8), the heavy medium separator, the flotation machine and the wet separation collection box are sequentially connected through a material conveying device (5). The feed hopper, the vibrating screen, the pneumatic separator (10), the dry separation collection box, the heavy medium separator, the flotation machine and the wet separation collection box are sequentially connected through a material conveying device (5).

7. The intelligent dry-wet separation coupling system for all-size clean coal according to claim 1, characterized in that, The positioning device (9) includes a base slidably connected to the inner bottom end of the recovery tank (8). A buffer spring is fixedly connected to the top end of the base. A support seat is fixedly connected to the top end of the buffer spring. A connecting piece is fixedly connected to the side end of the support seat. The connecting piece is adapted to the guide groove. A slot is formed in the side end of the support seat. The insertion plate is inserted into the slot. An installation ring is fixedly connected to the top end of the support seat. The outer cylinder (11) is rotationally inserted into the installation ring. A limiting assembly (21) is arranged at the side end of the installation ring.

8. The intelligent dry-wet separation coupling system for all-size clean coal according to claim 7, wherein The limiting component (21) includes a housing fixedly connected to the mounting ring. A limiting pin (22) is slidably inserted into the housing. The limiting pin (22) penetrates through the mounting ring and is inserted into the limiting groove. A return spring (23) is arranged between the limiting pin (22) and the inner wall of the housing.

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