Modularized underground coal mine wind power coal dressing equipment

Abstract

The utility model relates to the technical field of wind power coal dressing equipment, and discloses modularized coal mine underground wind power coal dressing equipment which comprises a collecting assembly, moving assemblies are fixedly connected to the two sides of the collecting assembly, a sorting assembly is arranged at the upper end of the collecting assembly, and the upper end of the sorting assembly is fixedly connected with one end of a sorting pipe. According to the modularized underground coal mine wind power coal separation equipment, the first separation hopper, the second separation hopper and the third separation hopper correspond to the first separation plate, the second separation plate and the third separation plate one by one, gangue and coal can be accurately classified and separated, wind power generated by the anti-explosion axial flow wind energy generator is blown out through the air blowing opening and penetrates through the air holes of the separation plate bodies, and therefore the separation efficiency is improved. Under the cooperation of wind power and vibration screening, raw coal is sequentially separated on a multi-group sorting plate, the coal product quality and the resource utilization rate are effectively improved, efficient sorting of coal and gangue is achieved, modular design is adopted for equipment, and equipment failures can be rapidly handled or components can be rapidly replaced in the underground limited space.

Description

Technical Field

[0001] This utility model relates to the technical field of wind-powered coal preparation equipment, specifically a modular underground wind-powered coal preparation equipment for coal mines. Background Technology

[0002] With the continuous development of coal mining technology, the requirements for underground coal preparation equipment are increasing. On the one hand, the equipment needs to be able to operate efficiently in a limited space and be easy to install, disassemble and move in order to adapt to the ever-changing underground working environment and mining layout. On the other hand, the coal preparation process should have higher precision and efficiency, effectively remove impurities such as gangue and nodules, improve the utilization rate of coal resources, reduce the impact on the environment, and reduce energy consumption and operating costs.

[0003] According to incomplete statistics, the average gangue content in freshly mined coal is as high as 15%, and in top-coal caving, it exceeds 20%. In traditional coal mining operations, mining and coal preparation are generally separated into two independent systems. Raw coal is not processed underground; instead, it is mixed together and directly transported and hoisted to the surface coal bunker, where a large amount of gangue is then washed and removed at the coal preparation plant. This has led to many drawbacks:

[0004] (1) It resulted in a large amount of ineffective transportation, which reduced the actual production capacity of coal mines. Transporting gangue mixed with raw coal from underground to the surface and then to the coal preparation plant for further processing is considered ineffective transportation. It directly wastes about 16% of electrical energy and causes damage to equipment and facilities, such as the tearing of belts, impact on belt supports, wear and tear on the scraper conveyor chute chain, coal mining machine drum, crusher and other equipment caused by gangue.

[0005] (2) It occupies a lot of space and damages the ecological environment. The gangue discharged from the surface coal preparation plant needs to occupy a lot of space for storage. Moreover, the sulfur and combustibles in the gangue are very easy to spontaneously combust, which further aggravates the damage to the ecological environment. At present, the national gangue stockpile is more than 6 billion tons, and an additional 600 to 800 million tons of gangue are added every year.

[0006] (3) A large amount of gangue was wasted and piled up into mountains; mining subsidence caused ground collapse and damage to farmland.

[0007] Therefore, developing underground coal preparation technology and equipment, constructing underground coal preparation processes and their supporting equipment systems, and developing the resource utilization of gangue underground can form a complete industrial chain, which is an urgent task for my country's coal industry to research, develop, and promote. Summary of the Invention

[0008] The technical problem to be solved by this utility model is to provide a modular underground coal mine pneumatic coal preparation equipment, which can effectively solve the problems that need to be solved in the prior art.

[0009] The technical solution adopted by this utility model is: a modular coal mine underground wind-powered coal preparation equipment, including a collection component, a movable component fixedly connected to both sides of the collection component, a sorting component set at the upper end of the collection component, one end of a sorting pipe fixedly connected to the upper end of the sorting component, and an explosion-proof axial flow wind power generator II fixedly connected to the other end of the sorting pipe. A pulse-type bag filter is set on the side of the collection component near the sorting pipe, and a coal powder transport vehicle is set at the dust outlet end of the pulse-type bag filter. A feeding conveyor belt is set at the end of the collection component away from the sorting pipe, and a guide port is rotatably connected to the end of the feeding conveyor belt near the collection component.

[0010] The collection assembly includes an outer shell, an explosion-proof axial flow wind power generator, a gangue collection hopper, an air inlet, a gangue discharge pipe, an air supply pipe, a sorting hopper, a sorting hopper, a sorting hopper, a sorting hopper, a sorting hopper, a gangue discharge pipe, a clean coal discharge pipe, and a clean coal conveyor belt. The upper end of the outer shell is fixedly connected to the gangue collection hopper and the air inlet. The lower end of the gangue collection hopper is fixedly connected to the gangue discharge pipe. The lower end of the air inlet is fixedly connected to one end of the air supply pipe. The other end of the air supply pipe is fixedly connected to the explosion-proof axial flow wind power generator. The explosion-proof axial flow wind power generator, the gangue collection hopper, the air inlet, the gangue discharge pipe, and the air supply pipe together form the sorting hopper. The upper end of the outer shell is fixedly connected to the sorting hopper and the sorting hopper, the upper end of the outer shell and the sorting hopper, the upper end of the outer shell and the sorting hopper, the lower ...

[0011] The sorting assembly includes a sorting shell, a first sealing telescopic sleeve, a spring, a fixing tube, a first sorting plate, a second sorting plate, a third sorting plate, a feed inlet, a second sealing telescopic sleeve, a vibrating motor, a suction inlet, a third sealing telescopic sleeve, an inclined top, a sorting plate body, a gangue weir, and a clean coal weir. The lower end of the sorting shell is fixedly connected to the first sealing telescopic sleeve, and the lower end of the sorting shell is fixedly connected to the spring. The lower end of the spring is fixedly connected to the fixing tube. The sorting plate body is fixedly connected inside the sorting shell, and gangue is fixedly connected to the left side of the sorting plate body. The sorting plate body has a clean coal weir fixedly connected to its right side. The sorting plate body, the gangue weir, and the clean coal weir together form sorting plate one. Sorting plate two and sorting plate three are fixedly connected inside the sorting shell. A feed inlet is fixedly connected to the upper end of the sorting shell. A sealing telescopic sleeve two is fixedly connected to the upper end of the feed inlet. An inclined top is provided at the upper end of the sorting shell. A vibration motor is fixedly connected to the inclined part on the left side of the inclined top. An air suction port is fixedly connected to the upper end of the inclined top. A sealing telescopic sleeve three is fixedly connected to the upper end of the air suction port.

[0012] Preferably, the movable component includes a fixed base, a screw, a slide rod, a lifting base, a pulley seat, and an explosion-proof wheel. The screw is rotatably connected to the center of the fixed base, the slide rod is fixedly connected inside the fixed base, the lifting base is slidably connected inside the fixed base, the pulley seat is fixedly connected to the front end of the lifting base, and an explosion-proof wheel is rotatably connected to the lower end of the pulley seat. The lifting base and the screw are threadedly connected, and the lifting base and the slide rod are slidably connected.

[0013] The above technical solution allows for precise adjustment of the height of the lifting seat by rotating the screw, which in turn drives the explosion-proof wheel at the lower end of the pulley seat to rise and fall, facilitating the transportation of collected components and improving the adaptability and flexibility of the equipment.

[0014] Preferably, the collecting component further includes a first lifting lug, with the first lifting lug fixedly connected to the front and rear ends of the outer shell, and the sorting component further includes a second lifting lug, with the second lifting lug fixedly connected to the front end of the sorting shell.

[0015] The above technical solution facilitates the collection and sorting of components for hoisting and installation.

[0016] Preferably, the first sorting hopper has the same structure as the second and third sorting hoppers, the upper end of the air outlet is provided with a dustproof net, and the upper opening of the outer shell has an inclined structure with an inclination angle of 8° to 15°.

[0017] Through the above technical solution, the first sorting bucket, the second sorting bucket, and the third sorting bucket are inclined, which can accurately sort gangue and clean coal. The upper end of the air vent is equipped with a dustproof net to prevent gangue from clogging the air vent, and the gangue can fall stably into the gangue collection bucket for collection.

[0018] Preferably, the first sorting hopper, the second sorting hopper, and the third sorting hopper correspond one-to-one with the first sorting plate, the second sorting plate, and the third sorting plate, respectively, and the surface of the sorting plate body is provided with air vents.

[0019] The above technical solution involves fixing the collection component, sorting component, pulse-jet bag filter, and feeding conveyor belt together during use. The collection component is moved via a movable component, reducing transportation difficulty. The feeding conveyor belt is activated to transport the coal to be sorted through the guide port to the feed inlet of the sorting component. Explosion-proof axial flow wind generator one and explosion-proof axial flow wind generator two are activated, and coal of different weights and particle sizes falls onto sorting plate one, where it is blocked by the gangue weir and the clean coal weir. A layer of gangue forms on sorting plate one. Simultaneously, a vibrating motor is activated, forming a certain angle with the sorting plate. The motor generates excitation force, causing the sorting plate to vibrate regularly in the lower left and upper right directions. After being vibrated on sorting plate one, some of the gangue falls from the left side of sorting plate one into the gangue collection hopper, where larger particles are screened. The remaining gangue and clean coal fall from the right side of sorting plate one onto sorting plate two, where smaller particles are screened on the left side. After the same sorting process, the clean coal falls from the right side of the third sorting plate. The explosion-proof axial flow wind generators one and two are activated, generating airflow that is blown out through the air supply pipe and nozzles. The air passes through the filter screen of the nozzles and enters the sorting pipe through the suction port, forming an air duct. The airflow rises through the air vents of the sorting plate body. Under the action of the airflow, the less dense clean coal lumps and coal powder are separated. The coal powder, carried by the airflow, enters the pulse-jet bag filter dust collector through the sorting pipe. The three groups... The sorting plate and sorting bucket work together to separate gangue from clean coal. The sorted gangue flows through the gangue collection hopper and down the gangue discharge pipe into the gangue discharge pipe and is discharged from the collection assembly. The clean coal is discharged through the clean coal discharge pipe and falls into the clean coal conveyor belt and is discharged from the collection assembly. Some of the clean coal dust is separated by a pulse bag filter and can be collected by a coal powder transport vehicle to complete the wind-powered coal preparation operation. The gangue discharge pipe and the clean coal discharge pipe are integrated into the outer shell, which reduces the size of the equipment and is conducive to underground use.

[0020] Preferably, the gangue downpipe and the gangue discharge pipe are interconnected, the gangue discharge pipe has an inclined structure, and an inspection door is provided at the connection between the outer shell and the gangue discharge pipe on the side of the outer shell near the feeding conveyor belt. The clean coal conveyor belt corresponds to the clean coal discharge pipe.

[0021] With the above technical solution, an inspection door is provided at the connection between the outer shell and the gangue discharge pipe at the end near the feeding conveyor belt, which facilitates maintenance and prevents the discharge pipe from becoming blocked.

[0022] Preferably, the feed inlet and the second sealing telescopic sleeve are locked together by bolts, the sorting tube and the third sealing telescopic sleeve are locked together by bolts, the fixing tube is inserted into the outer shell and locked together by bolts, and the first sealing telescopic sleeve, the second sealing telescopic sleeve and the third sealing telescopic sleeve are all made of fluororubber.

[0023] Through the above technical solution, springs and fixed pipes are set up. The vibration motor generates excitation force to vibrate the sorting plate, which evenly distributes the coal on the sorting plate. The springs prevent the vibration from having a significant impact on the collection component, maintaining equipment stability. Sealing telescopic sleeves two and three provide a soft connection between the guide port, the sorting pipe and the sorting component, avoiding equipment instability caused by vibration. Sealing telescopic sleeves one, two and three are made of fluororubber, which has good sealing and wear resistance. The equipment adopts a modular design concept, with tight connections and clear division of labor among the components. The collection component, sorting component, moving component and pulse bag dust collector work together, making the assembly, disassembly and maintenance of the equipment more convenient and faster. It is easy to assemble and disassemble underground, reducing the maintenance cost and maintenance difficulty of the equipment, and improving the overall operating efficiency and stability of the equipment.

[0024] Compared with the prior art, this utility model provides a modular underground pneumatic coal preparation device for coal mines, which has the following beneficial effects:

[0025] 1. The modular underground coal mine pneumatic coal preparation equipment has an inclined structure in the collection components of sorting bucket one, sorting bucket two, and sorting bucket three, which correspond one-to-one with sorting plate one, sorting plate two, and sorting plate three. With the inclined angle design of the upper opening of the shell, it can accurately classify and sort gangue and clean coal. The wind generated by the explosion-proof axial flow wind generator one is blown out through the air supply pipe and air outlet, and passes through the air vents of the sorting plate body. Under the synergy of wind power and vibrating screen, the coal material is separated sequentially on the multi-group sorting plates, which effectively improves the quality of coal products and resource utilization rate, and realizes efficient sorting operation.

[0026] 2. This modular underground coal mine pneumatic coal preparation equipment features lifting lugs 1 for the collection component and 2 for the sorting component, facilitating lifting and installation. This allows for rapid deployment in specific underground locations. Adopting a modular design concept, the collection component, sorting component, moving component, and pulse-jet bag filter work collaboratively. Each component is tightly connected and has a clear division of labor, making assembly, disassembly, and maintenance convenient and quick. In the limited space and complex environment of underground mines, equipment malfunctions can be quickly addressed or components replaced, reducing maintenance costs and difficulty, improving overall equipment operating efficiency and stability, and ensuring continuous and efficient coal preparation operations in underground mines. An inspection door is provided at the end of the outer shell near the feeding conveyor belt where it connects to the gangue discharge pipe, facilitating maintenance and preventing blockage of the discharge pipe. When transporting the equipment underground, the collection component can be moved using the moving component; after deployment, the moving component can be removed, reducing transportation difficulty. The gangue discharge pipe and clean coal discharge pipe are integrated within the outer shell, reducing the equipment's size and facilitating underground use.

[0027] 3. The modular underground pneumatic coal preparation equipment for coal mines uses a sealed telescopic sleeve 1 connected to the outer shell with a spring and a fixed pipe. The spring buffers the vibration of the vibrating motor, avoiding significant impact on the collection components, maintaining stable equipment operation, reducing equipment failures and wear caused by vibration, and extending equipment service life. Sealed telescopic sleeves 1, 2, and 3 are made of fluororubber, providing excellent sealing and wear resistance, preventing material leakage and dust escape, ensuring a stable operating environment for the equipment, and reducing maintenance requirements. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ;

[0029] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ;

[0030] Figure 3 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 3 ;

[0031] Figure 4 This is a schematic diagram of the disassembled structure of this utility model;

[0032] Figure 5 This is an enlarged structural diagram of the collection and sorting components of this utility model;

[0033] Figure 6 This is a schematic diagram showing the disassembled structure of the collection and sorting components of this utility model;

[0034] Figure 7 This is a three-dimensional cross-sectional structural diagram of the collection and sorting components of this utility model;

[0035] Figure 8 This is a schematic diagram of the disassembled structure of the mobile component of this utility model.

[0036] The components include: 1. Collection assembly; 101. Outer shell; 102. Lifting lug 1; 103. Explosion-proof axial flow wind power generator 1; 104. Gangue collection hopper; 105. Air outlet; 106. Gangue discharge pipe; 107. Air supply pipe; 108. Sorting hopper 1; 109. Sorting hopper 2; 110. Sorting hopper 3; 111. Gangue discharge pipe; 112. Clean coal discharge pipe; 113. Clean coal conveyor belt; 2. Moving assembly; 201. Fixed base; 202. Screw; 203. Slide rod; 204. Lifting base; 205. Pulley base; 206. Explosion-proof wheel; 3. Sorting assembly; 301. 302. Shell; 303. Lifting lug 2; 304. Sealing telescopic sleeve 1; 305. Spring; 306. Fixing pipe; 307. Sorting plate 1; 308. Sorting plate 2; 309. Feed inlet; 310. Sealing telescopic sleeve 2; 311. Vibrating motor; 312. Air intake; 313. Sealing telescopic sleeve 3; 314. Inclined top; 315. Sorting plate body; 316. Gangue weir; 317. Clean coal weir; 4. Sorting pipe; 5. Explosion-proof axial flow wind power generator 2; 6. Pulse bag filter; 7. Coal powder transport vehicle; 9. Feeding conveyor belt; 10. Guide port. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Example 1: As Figures 1-8 As shown, this utility model provides a modular underground coal mine pneumatic coal preparation device. The collecting component 1 is fixedly connected to two sides of the moving component 2. The upper end of the collecting component 1 is provided with a sorting component 3. One end of the sorting pipe 4 is fixedly connected to the upper end of the sorting component 3. The other end of the sorting pipe 4 is fixedly connected to an explosion-proof axial flow wind power generator 5. A pulse bag dust collector 6 is provided on the side of the collecting component 1 near the sorting pipe 4. A coal powder transport vehicle 7 is provided at the dust outlet end of the pulse bag dust collector 6. A feeding conveyor belt 9 is provided at the end of the collecting component 1 away from the sorting pipe 4. A guide port 10 is rotatably connected to the end of the feeding conveyor belt 9 near the collecting component 1.

[0039] The collection assembly 1 includes a housing 101, an explosion-proof axial flow wind generator 103, a gangue collection hopper 104, an air outlet 105, a gangue discharge pipe 106, an air supply pipe 107, a sorting hopper 108, a sorting hopper 2 109, a sorting hopper 3 110, a gangue discharge pipe 111, a clean coal discharge pipe 112, and a clean coal conveyor belt 113. The upper end of the housing 101 is fixedly connected to the gangue collection hopper 104 and the air outlet 105. The lower end of the gangue collection hopper 104 is fixedly connected to the gangue discharge pipe 106. The lower end of the air outlet 105 is fixedly connected to one end of the air supply pipe 107. At one end, an explosion-proof axial flow wind power generator 103 is fixedly connected to the other end of the air supply pipe 107. The explosion-proof axial flow wind power generator 103, the gangue collection hopper 104, the air outlet 105, the gangue downpipe 106, and the air supply pipe 107 together form a sorting hopper 108. A sorting hopper 2 109 and a sorting hopper 3 110 are fixedly connected to the upper end of the outer shell 101. A gangue discharge pipe 111 is fixedly connected inside the outer shell 101. A clean coal discharge pipe 112 is fixedly connected to the upper end of the outer shell 101. A clean coal conveyor belt 113 is provided inside the outer shell 101.

[0040] The sorting assembly 3 includes a sorting shell 301, a first sealing telescopic sleeve 303, a spring 304, a fixing pipe 305, a first sorting plate 306, a second sorting plate 307, a third sorting plate 308, a feed inlet 309, a second sealing telescopic sleeve 310, a vibration motor 311, an air intake 312, a third sealing telescopic sleeve 313, an inclined top 314, a sorting plate body 315, a gangue weir 316, and a clean coal weir 317. The first sealing telescopic sleeve 303 is fixedly connected to the lower end of the sorting shell 301. The spring 304 is fixedly connected to the lower end of the sorting shell 301. The fixing pipe 305 is fixedly connected to the lower end of the spring 304. The sorting plate body 315 is fixedly connected inside the sorting shell 301. The left side of the sorting plate body 315 is fixed. A gangue weir 316 is connected to the sorting plate body 315. A clean coal weir 317 is fixedly connected to the right side of the sorting plate body 315. The sorting plate body 315, gangue weir 316, and clean coal weir 317 together form a sorting plate one 306. A sorting plate two 307 and a sorting plate three 308 are fixedly connected inside the sorting shell 301. A feed inlet 309 is fixedly connected to the upper end of the sorting shell 301. A sealing telescopic sleeve two 310 is fixedly connected to the upper end of the feed inlet 309. An inclined top 314 is provided at the upper end of the sorting shell 301. A vibration motor 311 is fixedly connected to the inclined part on the left side of the inclined top 314. An air suction port 312 is fixedly connected to the upper end of the inclined top 314. A sealing telescopic sleeve three 313 is fixedly connected to the upper end of the air suction port 312.

[0041] Specifically, the mobile component 2 includes a fixed base 201, a screw 202, a slide bar 203, a lifting seat 204, a pulley seat 205, and an explosion-proof wheel 206. The fixed base 201 is rotatably connected to the center of the screw 202. The slide bar 203 is fixedly connected inside the fixed base 201. The lifting seat 204 is slidably connected inside the fixed base 201. The pulley seat 205 is fixedly connected to the front end of the lifting seat 204. The explosion-proof wheel 206 is rotatably connected to the lower end of the pulley seat 205. The lifting seat 204 and the screw 202 are threaded together, and the lifting seat 204 and the slide bar 203 are slidably connected. The advantage is that the height of the lifting seat 204 can be precisely adjusted by rotating the screw 202, thereby driving the explosion-proof wheel 206 at the lower end of the pulley seat 205 to rise and fall. This facilitates the movement and positioning of the equipment in locations requiring different heights, improving the adaptability and flexibility of the equipment.

[0042] Specifically, the collection component 1 further includes a lifting lug 102, which is fixedly connected to the front and rear ends of the outer shell 101. The sorting component 3 further includes a lifting lug 302, which is fixedly connected to the front end of the sorting shell 301. The advantage is that the lifting lugs 102 and 302 facilitate the hoisting and installation of the collection component 1 and the sorting component 3.

[0043] Example 2: Figures 2-8 As shown, this is an improvement on the previous embodiment.

[0044] Specifically, the structure of sorting bucket 108 is the same as that of sorting bucket 2 109 and sorting bucket 3 110. A dustproof net is provided at the upper end of the air inlet 105, and the upper opening of the outer shell 101 has an inclined structure with an inclination angle of 8° to 15°. The advantage is that the inclined structure of sorting buckets 108, 109, and 110 allows for precise sorting of gangue and clean coal.

[0045] Specifically, the sorting buckets 108, 109, and 110 correspond one-to-one with the sorting plates 306, 307, and 308, respectively, and the surface of the sorting plate body 315 is provided with ventilation holes. The advantage is that during use, the coal to be sorted is conveyed to the feed inlet 309 of the sorting assembly 3 through the feed inlet 10. The explosion-proof axial flow wind generators 103 and 5 are activated, and coal of different weights and particle sizes falls onto the sorting plate 306. Blocked by the gangue weir 316 and the clean coal weir 317, a gangue layer is formed on the sorting plate 306. Simultaneously, the vibration motor 311 is activated, and the vibration motor 311 forms a certain clamping force with the sorting plate. At the angle, the vibrating motor 311 generates an excitation force that drives the sorting plate to vibrate regularly in the lower left and upper right directions. After being vibrated on the first sorting plate 306, part of the gangue falls from the left side of the first sorting plate 306 into the gangue collection hopper 104, where larger-sized gangue is screened out. The other part of the gangue and clean coal falls from the right side of the first sorting plate 306 onto the second sorting plate 307, where smaller-sized gangue is screened out on the left side. The same sorting process is repeated. Afterwards, the clean coal falls from the right side of the sorting plate 308. The explosion-proof axial flow wind generator 103 and the explosion-proof axial flow wind generator 25, which are activated, generate airflow that is blown out through the air supply pipe 107 and the air outlet 105. The air passes through the filter screen of the air outlet 105 and enters the sorting pipe 4 through the air intake 312, forming an air duct. The airflow passes upward through the air vents of the sorting plate body 315. Under the action of the airflow, the less dense clean coal lumps and coal powder are separated. The coal powder is carried by the airflow through the sorting plate body 308. The sorting pipe 4 enters the pulse bag dust collector 6. The three sorting plates and sorting buckets work together to separate the gangue from the clean coal. The sorted gangue flows through the gangue collection hopper 104 and through the gangue discharge pipe 106 into the gangue discharge pipe 111 and is discharged from the collection component 1. The clean coal is discharged through the clean coal discharge pipe 112 and falls into the clean coal conveyor belt 113 and is discharged from the collection component 1. Some of the clean coal dust can be collected by the coal powder transport vehicle 7 after being sorted by the pulse bag dust collector 6.

[0046] Specifically, the gangue discharge pipe 106 is interconnected with the gangue discharge pipe 111, which has an inclined structure. An inspection door is provided at the connection point between the outer casing 101 and the gangue discharge pipe 111 near the feeding conveyor belt 9. The clean coal conveyor belt 113 corresponds to the clean coal discharge pipe 112. The advantage is that the inspection door at the connection point between the outer casing 101 and the gangue discharge pipe 111 near the feeding conveyor belt 9 facilitates maintenance and prevents blockage of the discharge pipe.

[0047] Specifically, the feed inlet 10 is locked and fixed to the sealing telescopic sleeve 2 310 by bolts, the sorting tube 4 is locked and fixed to the sealing telescopic sleeve 313 by bolts, the fixing tube 305 is inserted and connected to the outer shell 101 and locked and fixed by bolts, and the sealing telescopic sleeve 1 303, sealing telescopic sleeve 2 310 and sealing telescopic sleeve 313 are all made of fluororubber. The advantages are that the spring 304 and the fixed pipe 305 are set up, the vibration motor 311 generates excitation force to make the sorting plate vibrate and distribute the coal evenly on the sorting plate. The spring 304 ensures that the vibration will not have a significant impact on the collection component 1, keeping the equipment stable. The sealing telescopic sleeve 2 310 and sealing telescopic sleeve 313 make the guide port 10, the sorting pipe 4 and the sorting component 3 softly connected, avoiding the instability of the equipment caused by vibration. The sealing telescopic sleeve 1 303, sealing telescopic sleeve 2 310 and sealing telescopic sleeve 313 are made of fluororubber, which has good sealing and wear resistance. The equipment adopts a modular design concept, with tight connections and clear division of labor between the components. The collection component 1, the sorting component 3, the moving component 2 and the pulse bag dust collector 6 work together, making the assembly, disassembly and maintenance of the equipment more convenient and faster. It is convenient for underground assembly and disassembly, reduces the maintenance cost and maintenance difficulty of the equipment, and improves the overall operating efficiency and stability of the equipment.

[0048] Working principle: Before use, the collecting component 1, sorting component 3, pulse bag dust collector 6, and feeding conveyor belt 9 are assembled and fixed. The collecting component 1 is moved by the moving component 2, reducing the difficulty of transportation. The feeding conveyor belt 9 is started, and the coal to be sorted is transported to the feed inlet 309 of the sorting component 3 through the guide port 10. The explosion-proof axial flow wind power generator 103 and the explosion-proof axial flow wind power generator 5 are started. Coal of different weights and particle sizes fall on the sorting plate 306. It is blocked by the gangue weir 316 and the clean coal weir 317, forming a gangue layer on the sorting plate 306. At the same time, the vibration motor 311 is started. The vibrating motor 311 forms a certain angle with the sorting plate. The vibrating motor 311 generates an excitation force that drives the sorting plate to vibrate regularly in the lower left and upper right directions. After being vibrated on the first sorting plate 306, part of the gangue falls from the left side of the first sorting plate 306 into the gangue collection hopper 104, where larger-sized gangue is screened. The other part of the gangue and clean coal falls from the right side of the first sorting plate 306 onto the second sorting plate 307. The left side of the second sorting plate 307 screens smaller-sized gangue. After the same sorting, the clean coal falls from the right side of the third sorting plate 308. The explosion-proof axial flow wind generator 103 and the explosion-proof axial flow wind generator are activated. The second generator 5 generates airflow that is blown out through the air supply pipe 107 and the air outlet 105. The air passes through the filter screen of the air outlet 105 and enters the sorting pipe 4 through the suction port 312, forming an air duct. The airflow passes upward through the air vents of the sorting plate body 315. Under the action of the airflow, the less dense clean coal lumps and coal powder are separated. The coal powder is carried by the airflow through the sorting pipe 4 into the pulse-jet bag filter 6. The three sets of sorting plates and sorting hoppers work together to separate the gangue from the clean coal. The separated gangue flows through the gangue collection hopper 104, through the gangue discharge pipe 106, into the gangue discharge pipe 111, and is discharged from the collection assembly 1. The clean coal flows through the clean coal discharge pipe 11... 2. The coal dust falls into the clean coal conveyor belt 113 and is discharged into the collection component 1. Some clean coal dust is separated by the pulse bag dust collector 6 and can be collected by the coal powder transport vehicle 7 to complete the wind-powered coal preparation operation. The sealing telescopic sleeve 303, together with the spring 304 and the fixed pipe 305, is connected to the outer shell 101. The spring 304 buffers the vibration of the vibration motor 311 to avoid a large impact on the collection component 1, maintain stable operation of the equipment, reduce equipment failure and wear caused by vibration, and extend the service life of the equipment. The gangue discharge pipe 111 and the clean coal discharge pipe 112 are integrated into the outer shell 101, which reduces the size of the equipment and is conducive to underground use.

[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A modular underground pneumatic coal preparation device for coal mines, comprising a collection component (1), characterized in that: The collecting component (1) is fixedly connected to two sides of a moving component (2). A sorting component (3) is provided at the upper end of the collecting component (1). One end of a sorting pipe (4) is fixedly connected to the upper end of the sorting component (3). An explosion-proof axial flow wind power generator (5) is fixedly connected to the other end of the sorting pipe (4). A pulse bag dust collector (6) is provided on the side of the collecting component (1) close to the sorting pipe (4). A coal powder transport vehicle (7) is provided at the dust outlet end of the pulse bag dust collector (6). A feeding conveyor belt (9) is provided at the end of the collecting component (1) away from the sorting pipe (4). A guide port (10) is rotatably connected to the end of the feeding conveyor belt (9) close to the collecting component (1). The collection assembly (1) includes a shell (101), an explosion-proof axial flow wind generator (103), a gangue collection hopper (104), an air inlet (105), a gangue discharge pipe (106), an air supply pipe (107), a sorting hopper (108), a sorting hopper (109), a sorting hopper (110), a gangue discharge pipe (111), a clean coal discharge pipe (112), and a clean coal conveyor belt (113). The upper end of the shell (101) is fixedly connected to the gangue collection hopper (104) and the air inlet (105). The lower end of the gangue collection hopper (104) is fixedly connected to the gangue discharge pipe (106), and the lower end of the air inlet (105) is fixedly connected to the air supply pipe (107). At one end of the air supply pipe (107), an explosion-proof axial flow wind power generator (103) is fixedly connected to the other end of the air supply pipe (107). The explosion-proof axial flow wind power generator (103), gangue collection hopper (104), air outlet (105), gangue downpipe (106) and air supply pipe (107) together form a sorting hopper (108). A sorting hopper (109) and a sorting hopper (110) are fixedly connected to the upper end of the outer shell (101). A gangue discharge pipe (111) is fixedly connected inside the outer shell (101). A clean coal discharge pipe (112) is fixedly connected to the upper end of the outer shell (101). A clean coal conveyor belt (113) is installed inside the outer shell (101). The sorting assembly (3) includes a sorting shell (301), a sealing telescopic sleeve one (303), a spring (304), a fixing pipe (305), a sorting plate one (306), a sorting plate two (307), a sorting plate three (308), a feed inlet (309), a sealing telescopic sleeve two (310), a vibration motor (311), an air intake (312), a sealing telescopic sleeve three (313), an inclined top (314), a sorting plate body (315), a gangue weir (316), and a clean coal weir (317). The lower end of the sorting shell (301) is fixedly connected to the sealing telescopic sleeve one (303). The lower end of the sorting shell (301) is fixedly connected to the spring (304). The lower end of the spring (304) is fixedly connected to the fixing pipe (305). The sorting plate body (315) is fixedly connected inside the sorting shell (301). A gangue weir (316) is fixedly connected to the left side, and a clean coal weir (317) is fixedly connected to the right side of the sorting plate body (315). The sorting plate body (315), gangue weir (316), and clean coal weir (317) together form sorting plate one (306). Sorting plate two (307) and sorting plate three (308) are fixedly connected inside the sorting shell (301). An inlet is fixedly connected to the upper end of the sorting shell (301). The feed inlet (309) is fixedly connected to a sealing telescopic sleeve two (310) at its upper end. The sorting shell (301) is provided with an inclined top (314) at its upper end. A vibration motor (311) is fixedly connected to the inclined part on the left side of the inclined top (314). An air intake (312) is fixedly connected to the upper end of the inclined top (314). A sealing telescopic sleeve three (313) is fixedly connected to the upper end of the air intake (312).

2. The modular underground pneumatic coal preparation equipment according to claim 1, characterized in that: The movable component (2) includes a fixed base (201), a screw (202), a slide rod (203), a lifting base (204), a pulley seat (205), and an explosion-proof wheel (206). The screw (202) is rotatably connected to the center of the fixed base (201). The slide rod (203) is fixedly connected inside the fixed base (201). The lifting base (204) is slidably connected inside the fixed base (201). The pulley seat (205) is fixedly connected to the front end of the lifting base (204). The explosion-proof wheel (206) is rotatably connected to the lower end of the pulley seat (205). The lifting base (204) and the screw (202) are threadedly connected, and the lifting base (204) and the slide rod (203) are slidably connected.

3. The modular underground pneumatic coal preparation equipment according to claim 1, characterized in that: The collecting component (1) also includes a first lifting lug (102), and the front and rear ends of the outer shell (101) are fixedly connected to the first lifting lug (102). The sorting component (3) also includes a second lifting lug (302), and the front end of the sorting shell (301) is fixedly connected to the second lifting lug (302).

4. A modular underground pneumatic coal preparation device according to claim 1, characterized in that: The first sorting hopper (108) has the same structure as the second sorting hopper (109) and the third sorting hopper (110). The upper end of the air outlet (105) is provided with a dustproof net. The upper opening of the outer shell (101) has an inclined structure with an inclination angle of 8° to 15°.

5. A modular underground pneumatic coal preparation device according to claim 1, characterized in that: The sorting buckets 1 (108), 2 (109) and 3 (110) correspond one to one of the sorting plates 1 (306), 2 (307) and 3 (308), respectively, and the surface of the sorting plate body (315) is provided with ventilation holes.

6. A modular underground pneumatic coal preparation device according to claim 5, characterized in that: The gangue downpipe (106) and the gangue discharge pipe (111) are interconnected. The gangue discharge pipe (111) has an inclined structure. An inspection door is provided at the connection between the outer shell (101) and the gangue discharge pipe (111) on the side of the outer shell (101) near the feeding conveyor belt (9). The clean coal conveyor belt (113) corresponds to the clean coal discharge pipe (112).

7. A modular underground pneumatic coal preparation device according to claim 1, characterized in that: The feed inlet (10) and the sealing telescopic sleeve two (310) are locked and fixed by bolts. The sorting tube (4) and the sealing telescopic sleeve three (313) are locked and fixed by bolts. The fixing tube (305) is inserted and connected to the outer shell (101) and locked and fixed by bolts. The sealing telescopic sleeve one (303), the sealing telescopic sleeve two (310) and the sealing telescopic sleeve three (313) are all made of fluororubber.

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