A coal and gangue separating and conveying device in a mine

Abstract

This invention relates to the technical field of material conveying and discloses an underground coal and gangue separation and conveying device, including a first conveying component, a screening component, and a separation component. The first conveying component includes a first rotary drive and a first belt, with the first rotary drive connected to the first belt. The screening component includes a screening drive and a screening plate. The screening drive is used to drive the screening plate to move along a preset trajectory, and the first rotary drive can drive the first belt to move, so as to convey the load on the first belt to the screening plate. The separation component includes a first inclined track, a first monitoring component, and a force-applying drive. The first inclined track is located below the outlet of the screening plate. The first monitoring component is used to acquire an image of the load falling from the outlet of the first inclined track. The force-applying drive applies an external force to the gangue in the load according to the image to change the falling trajectory of the gangue, thereby realizing the separation of coal and gangue.

Description

Technical Field

[0001] This invention relates to the technical field of material conveying, and specifically to an underground coal and gangue separation and conveying device. Background Technology

[0002] In coal mining operations, coal and gangue are usually extracted together. Current technology commonly employs a method of transporting the mixture to the surface for sorting. This traditional method has several drawbacks: Firstly, the inefficient transport of gangue significantly increases transportation costs, and the surface sorting equipment, burdened by the need to process the entire mixture, suffers from extremely high loads, resulting in low sorting efficiency. Secondly, during mixed transport, the harder gangue causes severe friction with the conveying equipment, leading to significant wear and tear and a substantial reduction in equipment lifespan. Furthermore, the mixed materials are prone to generating coal dust pollution during transport and sorting, and gangue resources are not utilized effectively and promptly, resulting in resource waste. Summary of the Invention

[0003] In view of this, the present invention provides an underground coal gangue separation and conveying device to solve the problem that during the mixed transportation process, the high-hardness gangue will cause severe friction with the conveying equipment, resulting in serious wear and significantly shortening the service life of the equipment.

[0004] In a first aspect, this application provides an underground coal and gangue separation and conveying device, comprising: A first conveying assembly includes a first rotary drive and a first belt, wherein the first rotary drive is connected to the first belt; A screening assembly includes a screening drive and a screening plate. The screening drive is used to drive the screening plate to move along a preset trajectory. The first rotary drive can drive the first belt to move so as to transport the load on the first belt to the screening plate. The separation assembly includes a first inclined track, a first monitoring element, and a force-applying drive element. The first inclined track is located below the outlet of the screening plate. The first monitoring element is installed at the outlet of the first inclined track and is used to acquire an image of the load falling from the outlet of the first inclined track. The force-applying drive element applies an external force to the gangue in the load according to the image to change the falling trajectory of the gangue.

[0005] Beneficial Effects: The first conveying component stably transports the coal and gangue mixture underground to the screening component. The screening drive then moves the screening plate along a preset trajectory, performing preliminary screening to separate the powdery and lumpy mixtures. Subsequently, the material on the screening plate enters the first inclined track. The first monitoring device installed at the track outlet acquires images of the falling material, distinguishing coal from gangue. The force-applying drive applies external force to the gangue based on the image, altering its falling trajectory and thus achieving separation of coal and gangue. This device completes coal and gangue separation underground, reducing ineffective gangue transportation and lowering transportation costs. It also reduces the load on surface sorting equipment, improving overall sorting efficiency. Furthermore, pre-separating gangue underground reduces wear on subsequent conveying equipment, extending its service life.

[0006] In one alternative embodiment, the force-applying drive includes: The first motor is fixedly connected to the bottom of the first inclined track and is located near the outlet of the first inclined track; The first rotating disk is sleeved on the outer periphery of the output shaft of the first motor and is fixedly connected to the output shaft of the first motor; The first rod is hinged to the first rotating disk; The second rod is hinged to the first rod; The first block is fixed to the bottom of the first inclined track. The first block has a first through hole. One end of the second rod passes through the first through hole and extends out of the first through hole. The first motor is used to drive the second rod to extend out of the first through hole or retract into the first through hole. The second rod extending out of the first through hole applies external force to the load in its direction of movement.

[0007] Beneficial effects: By driving the first rotating disk to rotate through the first motor, the second rod can extend or retract through the first through hole, which can apply a stable external force to the gangue in the direction of movement and ensure the reliability of the change in the trajectory of the gangue falling.

[0008] In one alternative embodiment, a plurality of force-applying drive members are spaced apart along the width direction of the first inclined track.

[0009] Beneficial effects: Multiple force-applying drive components are distributed at intervals along the width of the first inclined track, which can cover the entire width range of the track outlet, ensuring that all the gangue falling from the track outlet can be force-applied, avoiding any missed separation, and further improving the coal and gangue separation effect.

[0010] In one optional embodiment, the screening component further includes: The first open-ended material collection cylinder is located below the outlet of the first inclined track. The second open-ended collecting cylinder is located below the outlet of the first inclined track, and the distance between the second open-ended collecting cylinder and the outlet of the first inclined track is greater than the distance between the first open-ended collecting cylinder and the outlet of the first inclined track.

[0011] Beneficial effects: By setting up a first open collection cylinder and a second open collection cylinder, with different distances between the two collection cylinders and the outlet of the first inclined track, the gangue whose trajectory is changed by the force-driven component and the coal that is not subjected to force can fall into the corresponding collection cylinders respectively, realizing the orderly collection of coal and gangue, avoiding the re-mixing of separated materials, and ensuring the effect of coal and gangue separation.

[0012] In one alternative embodiment, the screening drive includes: The second inclined track is located above and below the screening plate; The third rod is hinged at both ends to the screening plate and the second inclined track, respectively. The fourth rod is spaced apart from the third rod, and its two ends are respectively hinged to the screening plate and the second inclined track; The fifth rod is hinged at one end to the screening plate; The second rotating disk is hinged to the fifth rod. The second rotary drive component is connected to the second rotary disk and is used to drive the second rotary disk to rotate.

[0013] Beneficial effects: The rotary drive component drives the second rotary disk to rotate, which in turn drives the screening plate to move through the fifth rod. At the same time, the third and fourth rods are hinged to the screening plate and the second inclined track, respectively, which can stably drive the screening plate to move along the preset trajectory, improve the stability and regularity of the screening plate movement, and ensure the efficiency and effect of the preliminary screening of coal gangue mixture.

[0014] In one alternative embodiment, the second rotary drive includes: First shell, The second motor is fixedly connected to the inner wall of the first housing. The first worm gear is sleeved on the outer circumference of the output shaft of the second motor and is fixedly connected to the output shaft of the second motor; The worm gear is rotatably connected to the inner wall of the first housing, and the second rotating disk is coaxially fixed with the worm gear.

[0015] Beneficial effects: The second motor drives the first worm to rotate, which in turn drives the worm wheel to rotate. Since the worm gear transmission has the characteristics of stable transmission ratio and good self-locking, it can ensure the stability of the second rotating disk rotation and avoid the swaying or displacement deviation of the screening plate during the movement, thereby ensuring the screening effect of the screening component. At the same time, the transmission structure has low operating noise and low wear, which can extend the service life of the screening drive components.

[0016] In one alternative implementation, it further includes: The second housing has the first inclined track fixedly connected to the inner wall of the second housing, and both the screening assembly and the first conveying assembly are located inside the second housing. The second inclined track is fixedly connected to the inner wall of the second housing; The feeding hopper is funnel-shaped, and its outlet is connected to the bottom wall of the second housing. The first belt inlet is located below the feeding hopper outlet.

[0017] Beneficial effects: By setting up a second shell, the first inclined track, screening component, and first conveying component are integrated into the shell, which can protect the core components inside the device, prevent dust, gravel and other impurities in the mine from damaging the components, and extend the service life of the components; the funnel-shaped feed hopper can collect the coal and gangue mixture mined underground in a centralized manner, so that the material falls accurately into the first belt inlet, ensuring the continuity and stability of material conveying and avoiding material spillage and waste.

[0018] In one alternative embodiment, the first rotary drive includes: The third motor is fixedly connected to the inner wall of the second housing. The first pulley is sleeved on the outer circumference of the output shaft of the third motor and is fixedly connected to the output shaft of the third motor; The second pulley is rotatably connected to the inner wall of the second housing. The first belt is wound around the first pulley and the second pulley, and the first belt is inclined.

[0019] Beneficial effects: The third motor can provide continuous and uniform power for the movement of the first belt, ensuring the stability of the coal and gangue mixture transportation; the pulley and belt matching structure is simple and easy to maintain, reducing the later maintenance cost of the device.

[0020] In one alternative embodiment, a second conveying assembly is further included, the second conveying assembly comprising: The fourth motor is fixedly connected to the inner wall of the second housing; The third pulley is sleeved on the outer circumference of the output shaft of the fourth motor and is fixedly connected to the output shaft of the fourth motor; The fourth pulley is rotatably connected to the inner wall of the second housing; The second belt is wound around the third and fourth pulleys, and is located below the outlet of the second inclined track. The second belt is inclined.

[0021] Beneficial effects: The inclined second belt is located below the outlet of the second inclined track, which can carry out secondary conveying of the material after screening by the screening component, ensuring the continuity of material conveying; at the same time, the component is integrated into the second housing, which further optimizes the spatial layout of the device and makes the underground coal and gangue separation and conveying process smoother.

[0022] In one alternative embodiment, the second conveying assembly further includes a third open collecting cylinder located below the second belt outlet.

[0023] Beneficial effects: The third open collection cylinder can collect the material conveyed by the second belt, ensuring the classified storage of the separated material and further improving the efficiency of coal and gangue separation and transfer of the device. Attached Figure Description

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

[0025] Figure 1 A schematic diagram of the structure of an underground coal and gangue separation and conveying device provided in this application embodiment; Figure 2 A cross-sectional view of an underground coal and gangue separation and conveying device provided in an embodiment of this application; Figure 3 A schematic diagram of the structure of an underground coal and gangue separation and conveying device provided in this application, with the second housing and the second rotary drive component removed; Figure 4 A schematic diagram of the structure of an underground coal and gangue separation and conveying device provided in this application embodiment, with the second housing and the second rotary drive component removed, from another perspective; Figure 5 This is a schematic diagram of the structure of a separation component in an underground coal and gangue separation and conveying device provided in an embodiment of this application.

[0026] Explanation of reference numerals in the attached figures: 101. First belt; 102. Third motor; 103. First pulley; 104. Second pulley; 201. Screening plate; 202. First open collecting cylinder; 203. Second open collecting cylinder; 204. Second inclined track; 205. Third rod; 206. Fourth rod; 207. Fifth rod; 208. Second rotating disk; 209. First housing; 301. First inclined track; 302. First monitoring component; 303. First motor; 304. First rotating disk; 305. First rod; 306. Second rod; 307. First block; 401. Second housing; 402. Feeding bin; 501. Fourth motor; 502. Third pulley; 503. Fourth pulley; 504. Second belt; 505. Third open collection cylinder. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0028] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0030] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0031] The technical solutions in the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. The described embodiments are only possible technical implementations of the present invention, but are not limited thereto. Other embodiments obtained by those skilled in the art in conjunction with the embodiments of the present invention without creative effort are also within the protection scope of the present invention.

[0032] This application mainly adopts underground coal and gangue separation and transportation to reduce ineffective transportation, thereby achieving the effects of reducing transportation costs, improving sorting efficiency, and reducing equipment wear. The following is a further detailed description of this application.

[0033] The underground coal and gangue separation and conveying device provided in the embodiments of this application, such as... Figures 1 to 5 As shown, the system includes a first conveying component, a screening component, and a separation component. The first conveying component works in conjunction with the screening component to convey the coal-gangue mixture to the screening component for preliminary screening. The screening component works in conjunction with the separation component to convey the pre-screened material to the separation component for final coal-gangue separation. This achieves coal-gangue separation underground, reducing transportation costs, improving sorting efficiency, and reducing equipment wear. This is because separating gangue underground in advance reduces ineffective transportation of gangue, lowers the transportation load, and also reduces wear on subsequent conveying equipment caused by gangue.

[0034] Specifically, such as Figure 3 and Figure 4 As shown, the first conveying assembly includes a first rotary drive and a first belt 101. The first rotary drive includes a third motor 102, a first pulley 103, and a second pulley 104. The third motor 102 is typically a three-phase asynchronous motor, characterized by its simple structure, reliable operation, and convenient maintenance. It is bolted to the inner wall of the second housing 401 to ensure the stability of the motor during operation. The first pulley 103 is fitted around the outer circumference of the output shaft of the third motor 102 and is fixedly connected to the output shaft via a key. When the third motor 102 rotates, it drives the first pulley 103 to rotate synchronously. The second pulley 104 is rotatably connected to the inner wall of the second housing 401 via bearings, allowing for flexible rotation. The first belt 101 is wound around the first pulley 103 and the second pulley 104. The first belt 101 is inclined, and the inclination angle can be adjusted according to the actual downhole space and conveying requirements. The first belt 101 is generally made of rubber, which has good wear resistance and flexibility, and can adapt to the complex working environment downhole. The first pulley 103 rotates under the drive of the third motor 102, and drives the first belt 101 to move through friction, thereby realizing the function of conveying the load on the first belt 101.

[0035] Specifically, such as Figure 3 and Figure 4As shown, the screening assembly includes a screening drive component and a screening plate 201. The screening drive component includes a second inclined rail 204, a third rod 205, a fourth rod 206, a fifth rod 207, a second rotating disk 208, and a second rotary drive component. The second inclined rail 204 is located above and below the screening plate 201 and is fixedly connected to the inner wall of the second housing 401. It is typically made of channel steel and has high strength and stability. The third rod 205 and the fourth rod 206 are spaced apart, and their two ends are respectively hinged to the screening plate 201 and the second inclined rail 204 via hinge shafts. This hinge method allows the rods to rotate flexibly. One end of the fifth rod 207 is hinged to the screening plate 201, and the other end is hinged to the second rotating disk 208. The second rotating disk 208 is connected to the second rotary drive component and is used to drive its rotation. The second rotary drive component includes a first housing 209, a second motor, a first worm gear, and a worm wheel. The first housing 209 serves to protect the internal components and is generally made of welded steel plates. The second motor is fixedly connected to the inner wall of the first housing 209, and can also be a three-phase asynchronous motor. The first worm gear is sleeved on the outer circumference of the output shaft of the second motor and fixedly connected to the output shaft by a key. When the second motor rotates, it drives the first worm gear to rotate. The worm wheel is rotatably connected to the inner wall of the first housing 209 by a bearing, and the second rotating disk 208 is coaxially fixed with the worm wheel. Since the worm gear transmission has the characteristics of stable transmission ratio and good self-locking, the second motor drives the first worm gear to rotate, which in turn drives the worm wheel and the second rotating disk 208 to rotate. The fifth rod 207 drives the screening plate 201 to move. At the same time, the third rod 205 and the fourth rod 206 are hinged to the screening plate 201 and the second inclined track 204, respectively, which can stably drive the screening plate 201 to move along the preset trajectory, realizing the preliminary screening of the coal gangue mixture and separating the powdery mixture from the lumpy mixture.

[0036] Specifically, such as Figure 2 , Figure 3 and Figure 5As shown, the separation assembly includes a first inclined track 301, a first monitoring element 302, and a force-applying drive element. The first inclined track 301 is located below the outlet of the screening plate 201 and is fixedly connected to the inner wall of the second housing 401. It is typically made of steel plate with a smooth surface to facilitate material sliding. The first monitoring element 302 is installed at the outlet of the first inclined track 301 and can be a high-definition camera to capture images of the load falling from the outlet of the first inclined track 301. The force-applying drive element includes a first motor 303, a first rotating disk 304, a first rod 305, a second rod 306, and a first block 307. The first motor 303 is fixedly connected to the bottom of the first inclined track 301 and is located near the outlet of the first inclined track 301. It can be a stepper motor, which can precisely control the rotation angle. The first rotating disk 304 is sleeved on the outer circumference of the output shaft of the first motor 303 and is fixedly connected to the output shaft. When the first motor 303 rotates, it drives the first rotating disk 304 to rotate. The first rod 305 is hinged to the first rotating disk 304, and the second rod 306 is hinged to the first rod 305. A first block 307 is fixed to the bottom of the first inclined track 301, and a first through hole is formed on the first block 307. One end of the second rod 306 passes through the first through hole and extends out of it. The first motor 303 drives the first rotating disk 304 to rotate, which in turn drives the second rod 306 to extend or retract into the first through hole. The second rod 306 extending out of the first through hole can apply external force to the load in its direction of movement. Multiple force-applying drive components are spaced apart along the width direction of the first inclined track 301, covering the entire width range of the track exit, ensuring that all the gangue falling from the track exit can be subjected to force. The screening assembly also includes a first open collecting cylinder 202 and a second open collecting cylinder 203, both located below the outlet of the first inclined track 301. The distance between the second open collecting cylinder 203 and the outlet of the first inclined track 301 is greater than the distance between the first open collecting cylinder 202 and the outlet of the first inclined track 301. Gangue whose trajectory has been altered by the force-applying drive and coal that has not been subjected to force can fall into their respective collecting cylinders, achieving orderly collection of coal and gangue.

[0037] like Figure 1 and Figure 2 As shown, this embodiment also includes a second housing 401 and a feeding bin 402. The second housing 401 integrates the first inclined track 301, the screening assembly, and the first conveying assembly, protecting the core components inside the device from damage caused by dust, gravel, and other impurities from underground. The feeding bin 402 is funnel-shaped, with its outlet connected to the bottom wall of the second housing 401. The inlet of the first belt conveyor 101 is located below the outlet of the feeding bin 402, enabling centralized collection of the coal and gangue mixture mined underground, ensuring that the material falls precisely into the inlet of the first belt conveyor 101, and guaranteeing the continuity and stability of material conveying.

[0038] In this embodiment, as Figure 4 As shown, the second conveying assembly includes a fourth motor 501, a third pulley 502, a fourth pulley 503, a second belt 504, and a third open collecting cylinder 505. The fourth motor 501 is fixedly connected to the inner wall of the second housing 401. The third pulley 502 is sleeved on the outer circumference of the output shaft of the fourth motor 501 and fixedly connected to the output shaft. The fourth pulley 503 is rotatably connected to the inner wall of the second housing 401. The second belt 504 is wound around the third pulley 502 and the fourth pulley 503, located below the outlet of the second inclined track 204 and inclined, allowing for secondary conveying of the material after screening by the screening assembly. The third open collecting cylinder 505 is located below the outlet of the second belt 504 and collects the material conveyed by the second belt 504, ensuring the classified storage of the separated material.

[0039] In this embodiment, the device achieves effective separation and transportation of coal and gangue underground through the coordinated operation of its components. The first conveying component stably transports the coal and gangue mixture to the screening component, which performs preliminary screening, separating the powdery and lumpy mixture. The pre-screened material enters the separation component, where the first monitoring element 302 distinguishes between coal and gangue. The force-applying drive element applies external force to the gangue to change its falling trajectory, thus achieving separation of coal and gangue. The second conveying component performs secondary transportation and collection of the separated material. The entire process is completed underground, reducing ineffective gangue transportation, lowering transportation costs, reducing the load on surface sorting equipment, improving overall sorting efficiency, reducing wear on equipment from gangue, extending equipment lifespan, and allowing the gangue to be used for underground roadway backfilling, achieving effective resource utilization.

[0040] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. An underground coal and gangue separation and conveying device, characterized in that, include: The first conveying assembly includes a first rotary drive and a first belt (101), wherein the first rotary drive is connected to the first belt (101); The screening assembly includes a screening drive and a screening plate (201). The screening drive is used to drive the screening plate (201) to move along a preset trajectory. The first rotary drive can drive the first belt (101) to move so as to transport the load on the first belt (101) to the screening plate (201). The separation assembly includes a first inclined track (301), a first monitoring element (302), and a force-applying drive element. The first inclined track (301) is located below the outlet of the screening plate (201). The first monitoring element (302) is installed at the outlet of the first inclined track (301). The first monitoring element (302) is used to acquire an image of the load falling from the outlet of the first inclined track (301). The force-applying drive element applies an external force to the gangue in the load according to the image to change the falling trajectory of the gangue.

2. The underground coal and gangue separation and conveying device according to claim 1, characterized in that, The force-applying driving component includes: The first motor (303) is fixedly connected to the bottom of the first inclined rail (301) and is located near the outlet of the first inclined rail (301); The first rotating disk (304) is sleeved on the outer periphery of the output shaft of the first motor (303) and is fixedly connected to the output shaft of the first motor (303); The first rod (305) is hinged to the first rotating disk (304); The second rod (306) is hinged to the first rod (305); The first block (307) is fixed to the bottom of the first inclined track (301). The first block (307) has a first through hole. One end of the second rod (306) passes through the first through hole and extends out of the first through hole. The first motor (303) is used to drive the second rod (306) to extend out of the first through hole or retract into the first through hole. The second rod (306) extends out of the first through hole to apply external force to the load in its moving direction.

3. The underground coal and gangue separation and conveying device according to claim 2, characterized in that, Multiple force-applying drive components are spaced apart along the width direction of the first inclined track (301).

4. The underground coal and gangue separation and conveying device according to claim 3, characterized in that, The screening component further includes: The first open-ended collecting cylinder (202) is located below the outlet of the first inclined track (301); The second open collecting cylinder (203) is located below the outlet of the first inclined track (301), and the distance between the second open collecting cylinder (203) and the outlet of the first inclined track (301) is greater than the distance between the first open collecting cylinder (202) and the outlet of the first inclined track (301).

5. The underground coal and gangue separation and conveying device according to any one of claims 1-4, characterized in that, The screening drive component includes: The second inclined track (204) is located above and below the screening plate (201); The third rod (205) is hinged at both ends to the sieve plate (201) and the second inclined track (204), respectively; The fourth rod (206) is spaced apart from the third rod (205), and its two ends are respectively hinged to the screening plate (201) and the second inclined track (204); The fifth rod (207) is hinged at one end to the sieve plate (201); The second rotating disk (208) is hinged to the fifth rod (207); The second rotary drive is hinged to the second rotary disk (208) and is used to drive the second rotary disk (208) to rotate.

6. The underground coal and gangue separation and conveying device according to claim 5, characterized in that, The second rotary drive includes: First shell (209); The second motor is fixedly connected to the inner wall of the first housing (209); The first worm gear is sleeved on the outer circumference of the output shaft of the second motor and is fixedly connected to the output shaft of the second motor; The worm gear is rotatably connected to the inner wall of the first housing (209), and the second rotating disk (208) is coaxially fixed with the worm gear.

7. The underground coal and gangue separation and conveying device according to claim 6, characterized in that, Also includes: The second housing (401) is fixedly connected to the inner wall of the first inclined track (301), and the screening assembly and the first conveying assembly are both located inside the second housing (401). The second inclined track (204) is fixedly connected to the inner wall of the second housing (401); The feeding bin (402) is funnel-shaped, and the outlet of the feeding bin (402) is connected to the bottom wall of the second housing (401). The inlet of the first belt (101) is located below the outlet of the feeding bin (402).

8. The underground coal and gangue separation and conveying device according to claim 7, characterized in that, The first rotary drive includes: The third motor (102) is fixedly connected to the inner wall of the second housing (401); The first pulley (103) is sleeved on the outer periphery of the output shaft of the third motor (102) and is fixedly connected to the output shaft of the third motor (102); The second pulley (104) is rotatably connected to the inner wall of the second housing (401); The first belt (101) is wound around the first pulley (103) and the second pulley (104), and the first belt (101) is inclined.

9. The underground coal and gangue separation and conveying device according to claim 8, characterized in that, It also includes a second conveying assembly, the second conveying assembly comprising: The fourth motor (501) is fixedly connected to the inner wall of the second housing (401); The third pulley (502) is sleeved on the outer periphery of the output shaft of the fourth motor (501) and is fixedly connected to the output shaft of the fourth motor (501); The fourth pulley (503) is rotatably connected to the inner wall of the second housing (401); The second belt (504) is wound around the third pulley (502) and the fourth pulley (503). The second belt (504) is located below the outlet of the second inclined track (204) and is inclined.

10. The underground coal and gangue separation and conveying device according to claim 9, characterized in that, The second conveying assembly further includes a third open collecting cylinder (505) located below the outlet of the second belt (504).

Images