Device for filtering impurities in coal gangue

Abstract

The utility model provides a device for filtering impurities in coal gangue, and relates to the technical field of filtering devices.When the device is used, the coal gangue enters a feeding barrel through a uniform-speed feeding part and then enters a filtering box body, the coal gangue falls onto a first-stage vibration filtering part, and then the impurities in the coal gangue fall into a second-stage vibration filtering part; after one-layer vibration filtering of the first-stage vibration filtering part, filtered impurities fall onto the first-stage conveying impurity box, meanwhile, the impurities are conveyed out of the filtering box body through the first-stage conveying impurity box and then fall onto the second-stage washing filtering part, and the coal gangue is washed through the second-stage washing filtering part, so that the impurities adhering to the coal gangue are washed down; meanwhile, the secondary washing filter part is vibrated and filtered through the linkage rod, impurities are filtered to the secondary conveying impurity box, and the impurities are conveyed out of the filter box body through the secondary conveying impurity box, so that the filter device can work uninterruptedly, and the filter efficiency is greatly improved.

Description

Technical Field

[0001] This application relates to the field of filtration device technology, and more specifically, to a filtration device for impurities in coal gangue. Background Technology

[0002] Coal gangue is a rock composed of organic and inorganic compounds deposited along with coal during coal formation. It typically occurs in thin layers within or at the top and bottom of coal seams, and is a significant amount of solid waste generated during coal mine construction, mining, washing, and processing. Based on its main mineral content, coal gangue is classified into claystone, sandstone, carbonate, and aluminous rocks. According to its source and final state, coal gangue can be divided into three main categories: tunneling gangue, coal preparation gangue, and natural gangue.

[0003] Existing coal gangue filtration devices employ two-stage vibration filtration, which can remove most impurities from the coal gangue. However, during the filtration process, some highly adhesive impurities adhere to the coal gangue and are difficult to remove completely through vibration. Dust is easily generated during the filtration process, resulting in incomplete filtration, environmental pollution, and harm to workers' health. Furthermore, existing filtration devices process relatively small quantities of coal gangue at a time, and the filtered impurities are usually placed in an impurity collection box. When the collection box is full, the filtration device is stopped for unified processing. Because the device requires intermittent filtration operations, the filtration efficiency is low, thus exhibiting shortcomings. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a coal gangue impurity filtration device. Through multiple filtrations, it can filter out small particulate impurities as well as highly viscous impurities, thereby improving the purity of the coal gangue, reducing dust diffusion, improving environmental friendliness, and enabling continuous impurity discharge and filtration without stopping the machine, thus greatly improving filtration efficiency.

[0005] This application is implemented as follows:

[0006] A storage component, comprising a filter housing and a feed cylinder, wherein the feed cylinder is fixedly connected to the top of the filter housing and is provided with a uniform feed component;

[0007] A multi-stage filtration assembly includes a primary vibrating filter, a primary transport impurity box, a secondary washing filter, a secondary transport impurity box, a circulating suction component, and a linkage rod. The primary vibrating filter and the secondary washing filter are staggered from top to bottom within the filter housing. The primary transport impurity box is fixedly connected below the primary vibrating filter, and the secondary transport impurity box is fixedly connected below the secondary washing filter. The suction end of the circulating suction component is fixedly connected to the secondary transport impurity box, and the outlet end of the circulating suction component is fixedly connected to the top of the filter housing. Both ends of the linkage rod are fixedly connected to the primary vibrating filter and the secondary washing filter, respectively.

[0008] In one embodiment of this application, the primary vibration filter includes a primary filter plate and a vibration motor. One end of the primary filter plate is fixedly connected to the side wall of the filter box in an inclined manner. The vibration motor is fixedly connected to the lower part of the primary filter plate. The tail end of the primary filter plate is fixedly connected to one end of the linkage rod.

[0009] In one embodiment of this application, the primary transport impurity box includes a primary impurity box body, a primary impurity conveyor belt, and a primary impurity sealing plate. The primary impurity box body is fixedly connected to the lower part of the primary vibrating filter element. The primary impurity conveyor belt is disposed at the bottom end of the primary impurity box body. One side of the primary impurity conveyor belt extends out of the filter box body. A primary open opening is provided above the side wall of the filter box body through which the primary impurity conveyor belt passes. The primary impurity sealing plate is hinged to the primary open opening.

[0010] In one embodiment of this application, the secondary water washing filter includes a rinsing plate and a secondary filter plate. The rinsing plate is fixedly connected to the bottom of the primary transport impurity box. One end of the secondary filter plate is fixedly connected to the side wall of the filter box body at an incline. The secondary filter plate and the primary vibrating filter are staggered. The secondary filter plate and the primary vibrating filter have a drop opening. The rinsing plate and the secondary filter plate are vertically aligned. The secondary filter plate is fixedly connected to one end of the linkage rod.

[0011] In one embodiment of this application, the secondary transport impurity box includes a secondary impurity box body, a secondary impurity conveyor belt, and a secondary impurity sealing plate. The secondary impurity box body is fixedly connected to the lower part of the secondary water washing filter element. The secondary impurity conveyor belt is disposed at the bottom end of the secondary impurity box body. One side of the secondary impurity conveyor belt extends out of the filter box body. A secondary opening is provided above the side wall of the filter box body through which the secondary impurity conveyor belt passes. The secondary impurity sealing plate is hinged to the secondary opening.

[0012] In one embodiment of this application, the circulating suction component includes a suction port, a ventilation duct, an air outlet, a circulating fan, and a baffle plate. The suction port is fixedly connected to the side wall of the secondary transport impurity box, the air outlet is fixedly connected to the top of the filter box, the suction port and the air outlet are fixedly connected to the circulating fan through the ventilation duct, and the baffle plate is fixedly connected to the top wall of the filter box, and the baffle plate is located to the side of the material discharge point of the feed cylinder.

[0013] In one embodiment of this application, the uniform speed feeding component is configured as a feeding conveyor belt. The uniform speed feeding component includes a rotating motor, a main rotating column, an auxiliary rotating column, and a conveyor belt. The output end of the rotating motor is fixedly connected to the main rotating column, and the two ends of the conveyor belt are respectively sleeved on the main rotating column and the auxiliary rotating column.

[0014] In one embodiment of this application, flexible baffles are fixedly connected to both sides of the conveyor belt.

[0015] In one embodiment of this application, multiple uniform velocity feeders are arranged side by side, and all of them are inclined downwards, with the feed cylinder corresponding to the uniform velocity feeders.

[0016] The beneficial effects of this application are as follows: During use, coal gangue is fed into the feed cylinder via a uniform-speed feeder, and then into the filter box. The coal gangue falls onto the primary vibrating filter element. After one layer of vibration filtration, the filtered impurities fall onto the primary transport impurity box, which transports them outside the filter box. The impurities then fall onto the secondary washing filter element, where they are washed away, removing the impurities adhering to the coal gangue. Simultaneously, the vibration force of the primary vibrating filter element is transmitted to the secondary washing filter element via a linkage rod, causing it to vibrate and filter the impurities onto the secondary transport impurity box. The secondary transport impurity box then transports these impurities outside the filter box. At this point, regardless of… The filter removes both sticky impurities and those mixed in with coal gangue. By continuously transporting these impurities outside the filter box, the filtration device can operate uninterruptedly, greatly improving filtration efficiency. During the filtration process, when coal gangue falls onto the primary vibrating filter and the secondary water washing filter, the circulating suction device is continuously activated. This allows the dust raised during the fall to be drawn into the secondary transport impurity box. After being washed by the upper secondary water washing filter, the dust becomes wet and falls into the secondary transport impurity box, preventing dust from flying around and improving the environmental friendliness of the device. This solves the current technical problems of incomplete coal gangue filtration, low filtration efficiency, and easy dust flight, which lead to environmental pollution and harm to workers' health. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the structure of a coal gangue impurity filtration device provided in this application embodiment;

[0019] Figure 2 A schematic diagram of the structure of the multiple filtering components is provided for the embodiments of this application;

[0020] Figure 3 A structural schematic diagram of the primary transport impurity box is provided for the embodiments of this application;

[0021] Figure 4 A schematic diagram of the structure of the primary impurity sealing plate is provided for the embodiments of this application;

[0022] Figure 5 A schematic diagram of the structure of the circulating suction component is provided for the embodiments of this application;

[0023] Figure 6 A structural schematic diagram of the uniform velocity feeder is provided for the embodiments of this application;

[0024] In the diagram: 100 - Storage component; 110 - Filter housing; 120 - Feed cylinder; 130 - Uniform speed feed component; 131 - Rotary motor; 132 - Main rotating column; 133 - Auxiliary rotating column; 134 - Conveyor belt; 135 - Flexible baffle; 200 - Multiple filtration components; 210 - Primary vibrating filter element; 211 - Primary filter plate; 212 - Vibrating motor; 220 - Primary transport impurity box; 221 - Primary impurity box body; 222 - Primary impurity conveyor belt; 223 - Primary impurity... Sealing plate; 224-Primary open port; 230-Secondary water washing filter element; 231-Shower plate; 232-Secondary filter plate; 233-Fall outlet; 240-Secondary transport impurity box; 241-Secondary impurity box body; 242-Secondary impurity conveyor belt; 243-Secondary impurity sealing plate; 244-Secondary open port; 250-Circulating suction element; 251-Suction port; 252-Ventilation duct; 253-Air outlet; 254-Circulating fan; 255-Wind baffle; 260-Linkage rod; Detailed Implementation

[0025] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0026] like Figures 1-5 As shown, a coal gangue impurity filtration device according to an embodiment of this application includes:

[0027] Storage component 100 includes filter box 110 and feed cylinder 120. Feed cylinder 120 is fixedly connected to the top of filter box 110 and a uniform feed component 130 is provided on feed cylinder 120.

[0028] The multi-stage filtration assembly 200 includes a primary vibrating filter element 210, a primary transport impurity box 220, a secondary washing filter element 230, a secondary transport impurity box 240, a circulating suction element 250, and a linkage rod 260. The primary vibrating filter element 210 and the secondary washing filter element 230 are staggered from top to bottom within the filter housing 110. The primary transport impurity box 220 is fixedly connected below the primary vibrating filter element 210, and the secondary transport impurity box 240 is fixedly connected below the secondary washing filter element 230. The suction end of the circulating suction element 250 is fixedly connected to the secondary transport impurity box 240, and the outlet end of the circulating suction element 250 is fixedly connected to the top of the filter housing 110. The two ends of the linkage rod 260 are fixedly connected to the primary vibrating filter element 210 and the secondary washing filter element 230, respectively. In operation, coal gangue is fed into the feed cylinder 120 via the uniform feed device 130, and then into the filter box 110. The coal gangue falls onto the primary vibrating filter element 210. After one layer of vibration filtration by the primary vibrating filter element 210, the filtered impurities fall onto the primary transport impurity box 220. Simultaneously, the primary transport impurity box 220 transports the impurities outside the filter box 110, where they fall onto the secondary washing filter element 230. The secondary washing filter element 230 washes the coal gangue, removing the impurities adhering to it. Simultaneously, the vibration force of the primary vibrating filter element 210 is transmitted to the secondary washing filter element 230 via the linkage rod 260, causing the secondary washing filter element 230 to vibrate and filter the impurities onto the secondary transport impurity box 240. The secondary transport impurity box 240 then transports these impurities to the filter box. Outside the filter housing 110, both highly viscous impurities and impurities mixed in with coal gangue are filtered out. By continuously transporting the impurities outside the filter housing 110, the filtration device can operate continuously, greatly improving filtration efficiency. During the filtration process, when coal gangue falls onto the primary vibrating filter element 210 and the secondary water washing filter element 230, the circulating suction element 250 is continuously activated. This allows the dust raised during the fall to fall into the secondary transport impurity box 240 through the circulating suction element 250. After being washed by the upper secondary water washing filter element 230, the dust becomes wet and falls into the secondary transport impurity box 240, preventing dust from flying around and improving the environmental friendliness of the device. This solves the problems of incomplete coal gangue filtration, low filtration efficiency, and easy dust flying in current technologies, which lead to environmental pollution and harm to workers' health.

[0029] like Figure 3As shown, the primary vibrating filter element 210 includes a primary filter plate 211 and a vibration motor 212. One end of the primary filter plate 211 is fixedly connected to the side wall of the filter housing 110 at an incline. The vibration motor 212 is fixedly connected below the primary filter plate 211, and the tail end of the primary filter plate 211 is fixedly connected to one end of the linkage rod 260. When coal gangue falls onto the primary filter plate 211, the vibration motor 212 is activated to drive the primary filter plate 211 to vibrate, thereby causing the coal gangue to vibrate and filter while slowly descending.

[0030] Furthermore, the secondary water washing filter element 230 includes a shower plate 231 and a secondary filter plate 232. The shower plate 231 is fixedly connected to the bottom of the primary transport impurity box 220. One end of the secondary filter plate 232 is fixedly connected to the side wall of the filter box 110 at an incline. The secondary filter plate 232 and the primary vibrating filter element 210 are staggered. The secondary filter plate 232 and the primary vibrating filter element 210 have a drop opening 233. The shower plate 231 and the secondary filter plate 232 are vertically aligned. The secondary filter plate 232 is fixedly connected to one end of the linkage rod 260. When the coal gangue falls onto the secondary filter plate 232 through the drop outlet 233, the flushing plate 231 is activated, causing the water to form a linear flow that continuously washes the coal gangue on the secondary filter plate 232, thereby separating the more viscous impurities from the coal gangue. At the same time, when the vibration motor 212 is activated, the primary filter plate 211 vibrates, causing the linkage rod 260 to vibrate, which in turn causes the secondary filter plate 232 to vibrate continuously, thereby filtering the more viscous impurities and the remaining impurities mixed in the coal gangue into the secondary transport impurity box 240.

[0031] like Figure 3 and Figure 4As shown, the primary impurity transport box 220 includes a primary impurity box body 221, a primary impurity conveyor belt 222, and a primary impurity sealing plate 223. The primary impurity box body 221 is fixedly connected to the lower part of the primary vibrating filter element 210. The primary impurity conveyor belt 222 is located at the bottom end of the primary impurity box body 221, with one side of the primary impurity conveyor belt 222 extending out of the filter box 110. A primary opening 224 is provided above the side wall of the filter box 110 through which the primary impurity conveyor belt 222 passes. The primary impurity sealing plate 223 is hinged to the primary opening 224. When the impurities filtered out by the primary filter plate 211 fall onto the primary impurity conveyor belt 222, the primary impurity sealing plate 223 is opened, and the primary impurity conveyor belt 222 is started, so that the impurities filtered out by the primary filter plate 211 are continuously transported to the outside of the filter box 110, thereby ensuring that the primary impurity box body 221 is always not full, thus allowing for uninterrupted filtration operations. The secondary impurity transport box 240 includes a secondary impurity box body 241, a secondary impurity conveyor belt 242, and a secondary impurity sealing plate 243. The secondary impurity box body 241 is fixedly connected to the lower part of the secondary water washing filter element 230. The secondary impurity conveyor belt 242 is located at the bottom end of the secondary impurity box body 241, with one side extending out of the filter box 110. A secondary opening 244 is provided above the side wall of the filter box 110 through which the secondary impurity conveyor belt 242 passes. The secondary impurity sealing plate 243 is hinged to the secondary opening 244. Highly viscous impurities and residual impurities mixed in with coal gangue fall onto the secondary impurity conveyor belt 242. By opening the secondary impurity sealing plate 243, the secondary impurity conveyor belt 242 is activated, continuously conveying these impurities to the outside of the filter box 110, thus ensuring that the secondary impurity box body 241 is always not full, allowing for uninterrupted filtration.

[0032] Furthermore, multiple uniform velocity feeders 130 are arranged side by side, all of which are inclined downwards, and the feed cylinder 120 corresponds to the uniform velocity feeders 130. By setting multiple uniform velocity feeders 130, a large amount of coal gangue can be transported into the filter box 110 at a uniform speed at one time, thereby increasing the amount of coal gangue filtered at one time and thus improving the filtration efficiency.

[0033] like Figure 5As shown, the circulating suction component 250 includes a suction port 251, a ventilation duct 252, an air outlet 253, a circulating fan 254, and a baffle plate 255. The suction port 251 is fixedly connected to the side wall of the secondary transport impurity box 240, and the air outlet 253 is fixedly connected to the top of the filter box 110. The suction port 251 and the air outlet 253 are fixedly connected to the circulating fan 254 through the ventilation duct 252. The baffle plate 255 is fixedly connected to the top wall of the filter box 110, and the baffle plate 255 is located on the side of the material discharge point of the feed cylinder 120. When coal gangue falls from the feed cylinder 120 onto the primary filter plate 211, it easily causes dust to fly around. By starting the circulating fan 254, air is drawn in through the suction port 251 and discharged through the outlet 253, forming an air duct. The air velocity at the outlet 253 is relatively high, and the air pressure at the outlet 253 is relatively low. This allows the dust from the coal gangue falling onto the primary filter plate 211 to enter the air duct instead of flying around randomly. At the same time, the baffle plate 255 is used to help block the airflow and avoid affecting the air velocity at the outlet 253, thus preventing dust from flying around.

[0034] like Figure 6 As shown, the uniform velocity feeder 130 is configured as a feed conveyor belt. The uniform velocity feeder 130 includes a rotary motor 131, a main rotating column 132, an auxiliary rotating column 133, and a conveyor belt 134. The output end of the rotary motor 131 is fixedly connected to the main rotating column 132, and both ends of the conveyor belt 134 are respectively sleeved on the main rotating column 132 and the auxiliary rotating column 133. By starting the rotary motor 131, the main rotating column 132 is driven to rotate, thereby driving the conveyor belt 134 to rotate, and the auxiliary rotating column 133 to rotate, thus forming a conveying component to transport the coal gangue into the feed cylinder 120. Flexible baffles 135 are fixedly connected to both sides of the conveyor belt 134. The flexible baffles 135 prevent the coal gangue from detaching from the conveyor belt 134.

[0035] In summary, the working principle of the coal gangue impurity filtration device according to this utility model embodiment is as follows: During use, the rotating motor 131 drives the main rotating column 132 to rotate, thereby driving the conveyor belt 134 to rotate, and the auxiliary rotating column 133 to rotate, thus forming a conveying component. This transports the coal gangue into the feed cylinder 120, and then into the filter box 110. After the coal gangue falls onto the primary filter plate 211, the vibration motor 212 is started to drive the primary filter plate 211 to vibrate, causing the coal gangue to vibrate and filter while slowly descending. The filtered impurities fall onto the primary impurity conveyor belt 222. Then, the primary impurity sealing plate 223 is opened, and the primary impurity conveyor belt is activated. The conveyor belt 222 continuously transports the impurities filtered by the primary filter plate 211 to the outside of the filter box 110, ensuring that the primary impurity box 221 is always not full. When the impurities fall onto the secondary filter plate 232, the flushing plate 231 is activated, causing the water to form a linear flow that continuously washes the coal gangue on the secondary filter plate 232, thus separating the more viscous impurities from the coal gangue. At the same time, by activating the vibration motor 212, the vibration of the primary filter plate 211 drives the linkage rod 260 to vibrate, which in turn drives the secondary filter plate 232 to vibrate continuously, thus filtering the more viscous impurities and residual impurities mixed in with the coal gangue to the secondary filter. Inside the transport impurity box 240, by opening the secondary impurity sealing plate 243 and starting the secondary impurity conveyor belt 242, these impurities are continuously transported to the outside of the filter box 110, thus ensuring that the secondary impurity box 241 is always not full. By continuously transporting impurities to the outside of the filter box 110, both the primary impurity box 221 and the secondary impurity box 241 are kept in a state of not being full during the filtration process, allowing for uninterrupted filtration. At this time, both highly viscous impurities and impurities mixed in with coal gangue are filtered out, and by continuously transporting impurities to the outside of the filter box 110, it is unnecessary to... The machine is stopped, impurities are removed from the filter box, and the device is restarted for filtration, which greatly improves the filtration efficiency. During the filtration process, when coal gangue falls from the feed cylinder 120 onto the primary filter plate 211, dust is easily generated. By starting the circulating fan 254, air is drawn in through the suction port 251 and discharged through the outlet 253, forming an air duct. The air velocity at the outlet 253 is relatively high, and the air pressure at the outlet 253 is relatively low, so that the dust scattered by the coal gangue falling onto the primary filter plate 211 enters the air duct and does not fly around randomly. At the same time, the baffle plate 255 is used to help block the airflow and avoid affecting the air velocity at the outlet 253, thus preventing dust from flying around.

[0036] The above are merely embodiments of this application and are not intended to limit the scope of protection of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

Claims

1. A coal gangue impurity filtering device, characterized in that, include: Storage component (100), the storage component (100) includes a filter box (110) and a feed cylinder (120), the feed cylinder (120) is fixedly connected to the top of the filter box (110), and a uniform feed component (130) is provided on the feed cylinder (120). A multi-stage filtration assembly (200) includes a primary vibrating filter element (210), a primary transport impurity box (220), a secondary washing filter element (230), a secondary transport impurity box (240), a circulating suction element (250), and a linkage rod (260). The primary vibrating filter element (210) and the secondary washing filter element (230) are staggered from top to bottom within the filter housing (110). The primary transport impurity box (220) is fixedly connected to the primary vibrating filter element (210). Below the primary vibration filter element (210), the secondary transport impurity box (240) is fixedly connected to the secondary water washing filter element (230). The suction end of the circulating suction element (250) is fixedly connected to the secondary transport impurity box (240), and the outlet end of the circulating suction element (250) is fixedly connected to the top of the filter box body (110). The two ends of the linkage rod (260) are respectively fixedly connected to the primary vibration filter element (210) and the secondary water washing filter element (230).

2. The coal gangue impurity filtering device according to claim 1, characterized in that, The primary vibration filter element (210) includes a primary filter plate (211) and a vibration motor (212). One end of the primary filter plate (211) is fixedly connected to the side wall of the filter box (110) at an incline. The vibration motor (212) is fixedly connected below the primary filter plate (211). The tail end of the primary filter plate (211) is fixedly connected to one end of the linkage rod (260).

3. The coal gangue impurity filtering device according to claim 1, characterized in that, The primary transport impurity box (220) includes a primary impurity box body (221), a primary impurity conveyor belt (222), and a primary impurity sealing plate (223). The primary impurity box body (221) is fixedly connected to the lower part of the primary vibration filter (210). The primary impurity conveyor belt (222) is located at the bottom end of the primary impurity box body (221). One side of the primary impurity conveyor belt (222) extends out of the filter box (110). A primary opening (224) is provided above the side wall of the filter box (110) through which the primary impurity conveyor belt (222) passes. The primary impurity sealing plate (223) is hinged to the primary opening (224).

4. The coal gangue impurity filtering device according to claim 1, characterized in that, The secondary water washing filter element (230) includes a shower plate (231) and a secondary filter plate (232). The shower plate (231) is fixedly connected to the bottom of the primary transport impurity box (220). One end of the secondary filter plate (232) is fixedly connected to the side wall of the filter box body (110) at an incline. The secondary filter plate (232) and the primary vibration filter element (210) are staggered. The secondary filter plate (232) and the primary vibration filter element (210) have a drop opening (233). The shower plate (231) and the secondary filter plate (232) are vertically aligned. The secondary filter plate (232) is fixedly connected to one end of the linkage rod (260).

5. The coal gangue impurity filtering device according to claim 1, characterized in that, The secondary transport impurity box (240) includes a secondary impurity box body (241), a secondary impurity conveyor belt (242), and a secondary impurity sealing plate (243). The secondary impurity box body (241) is fixedly connected to the lower part of the secondary water washing filter element (230). The secondary impurity conveyor belt (242) is located at the bottom end of the secondary impurity box body (241). One side of the secondary impurity conveyor belt (242) extends out of the filter box body (110). A secondary opening (244) is provided above the side wall of the filter box body (110) through which the secondary impurity conveyor belt (242) passes. The secondary impurity sealing plate (243) is hinged to the secondary opening (244).

6. The coal gangue impurity filtering device according to claim 1, characterized in that, The circulating suction component (250) includes a suction port (251), a ventilation duct (252), an air outlet (253), a circulating fan (254), and a baffle plate (255). The suction port (251) is fixedly connected to the side wall of the secondary transport impurity box (240), and the air outlet (253) is fixedly connected to the top of the filter box (110). The suction port (251) and the air outlet (253) are fixedly connected to the circulating fan (254) through the ventilation duct (252). The baffle plate (255) is fixedly connected to the top wall of the filter box (110), and the baffle plate (255) is located on the side of the material discharge point of the feed cylinder (120).

7. The coal gangue impurity filtering device according to claim 1, characterized in that, The uniform speed feeding component (130) is configured as a feeding conveyor belt. The uniform speed feeding component (130) includes a rotating motor (131), a main rotating column (132), an auxiliary rotating column (133), and a conveyor belt (134). The output end of the rotating motor (131) is fixedly connected to the main rotating column (132), and the two ends of the conveyor belt (134) are respectively sleeved on the main rotating column (132) and the auxiliary rotating column (133).

8. The coal gangue impurity filtering device according to claim 7, characterized in that, Flexible baffles (135) are fixedly connected to both sides of the conveyor belt (134).

9. A coal gangue impurity filtration device according to claim 1, characterized in that, Multiple uniform speed feeders (130) are arranged side by side and are all inclined downwards. The feed cylinder (120) corresponds to the uniform speed feeder (130).

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