Flotation clean coal transferring scraper conveyor

Abstract

The invention relates to the technical field of coal washing and processing, in particular to a flotation clean coal transferring scraper conveyor which comprises a mounting box, a conveying assembly, a driving assembly, a cleaning assembly and a collecting assembly. The mounting box is horizontally arranged, the top end of the mounting box communicates with a feeding pipe, and a discharging opening is formed in one side of the mounting box; the conveying assembly is located on the mounting box and used for transferring the materials to the discharging opening. The driving assembly is located in the mounting box and used for driving the cleaning assembly to work; the cleaning assembly is located in the mounting box and used for cleaning materials attached to the surface of the conveying assembly. The material collecting assembly is located on one side of the mounting box and used for collecting the materials transferred to the discharging opening. The scraper blade has the effect that materials attached to the scraper blade are easy to clean.

Description

Technical Field

[0001] This application relates to the technical field of coal washing and processing, and in particular to a scraper conveyor for transferring flotation concentrate. Background Technology

[0002] The flotation clean coal transfer scraper conveyor is mainly used in the material transfer process between the flotation process and the subsequent clean coal dewatering and storage process in coal washing plants. Its core function is to transfer the water-containing clean coal produced by the flotation process to the next processing step.

[0003] Currently, existing flotation clean coal transfer scraper conveyors typically consist of a frame, a drive mechanism, a scraper chain assembly, and a conveying trough. In actual application, the operator starts the drive mechanism, which drives the scraper chain assembly to circulate within the conveying trough via sprocket transmission. The scrapers in the scraper chain assembly move synchronously with the chain, and the scrapers scrape the flotation clean coal received at the feed end of the conveying trough to the discharge end.

[0004] When scrapers are scraping materials, water-containing coking coal will adhere to the surface and edges of the scrapers. These adhered materials cannot be transported to the target location by the scrapers, and will gradually accumulate and thicken as the scrapers circulate, which increases the operating load of the scraper chain assembly and leads to a significant increase in the energy consumption of the drive mechanism. Summary of the Invention

[0005] In order to make it easy to clean the material adhering to the scraper, this application provides a scraper conveyor for transferring flotation clean coal.

[0006] This application provides a scraper conveyor for transferring flotation concentrate, which adopts the following technical solution: A scraper conveyor for transferring flotation concentrate includes an installation box, a conveying assembly, a driving assembly, a cleaning assembly, and a collecting assembly. The installation box is horizontally arranged, with a feed pipe connected to its top and a discharge port on one side. The conveying assembly is located on the installation box and is used to transfer materials to the discharge port. The driving assembly is located inside the installation box and is used to drive the cleaning assembly. The cleaning assembly is located inside the installation box and is used to clean materials adhering to the surface of the conveying assembly. The collecting assembly is located on one side of the installation box and is used to collect materials transferred to the discharge port.

[0007] By adopting the above technical solution, when it is necessary to transfer flotation clean coal, the conveying component will transfer the material entering the installation box through the feed pipe to the discharge port, and the driving component will drive the cleaning component to work synchronously. The cleaning component will clean the material attached to the surface of the conveying component, and the collecting component will collect the material at the discharge port and clean the fallen material, so that the material transfer and scraper cleaning are carried out simultaneously, thereby making it easy to clean the material attached to the scraper.

[0008] Optionally, the conveying assembly includes a drive motor, a first rotating shaft, a second rotating shaft, a chain, scrapers, and a top plate; the drive motor is installed on one side of the mounting box; the first rotating shaft is horizontally disposed inside the mounting box and rotatably connected to the mounting box, and a first sprocket is fixedly disposed on the first rotating shaft; the second rotating shaft is horizontally disposed inside the mounting box and rotatably connected to the mounting box, and a second sprocket is fixedly disposed on the second rotating shaft; the chain is sequentially wound around the first sprocket and the second sprocket, and a guide conveyor belt is fixedly disposed on the chain; the scrapers are fixedly disposed on the guide conveyor belt, and multiple scrapers are spaced apart along the annular path of the guide conveyor belt; the top plate is horizontally disposed inside the mounting box and fixedly connected to the mounting box.

[0009] By adopting the above technical solution, when in use, the material falls onto the top plate through the feed pipe. The operator starts the drive motor, which drives the first rotating shaft to rotate. The first rotating shaft drives the first sprocket to rotate synchronously. The first sprocket drives the second sprocket and the second rotating shaft to rotate through the chain. The chain drives the guide conveyor belt to perform a cyclical motion. The scraper moves synchronously with the guide conveyor belt. The scraper scrapes the material on the top plate towards the discharge port, making it easy to transfer the material to the discharge port.

[0010] Optionally, the driving assembly includes a receiving block, a guide block, and a first spring; the receiving block is vertically arranged and fixedly connected to the inner bottom wall of the mounting box, and a receiving groove is formed on the receiving block; the guide block is located in the receiving groove and is slidably connected to the receiving block, and a guide slope is provided on the side of the guide block near the discharge port, and the guide block is used to drive the cleaning assembly to slide in the vertical direction; the first spring is located in the receiving groove, and its two ends are fixedly connected to the guide block and the receiving block respectively.

[0011] By adopting the above technical solution, when the scraper moves synchronously with the guide conveyor belt, the scraper presses against the guide slope on the guide block, the guide block slides downward, and the first spring is in a compressed state; when the scraper is disengaged from the guide block, the first spring resets, and the first spring drives the guide block to slide upward, and the guide block abuts against the side of the scraper near the discharge port, making it easy for the guide block to scrape off the attached material on the side of the scraper near the discharge port; through the reciprocating sliding of the guide block in the vertical direction, the cleaning component can easily slide synchronously in the vertical direction.

[0012] Optionally, the cleaning assembly includes a connecting block, a drive telescopic rod, a connecting rod, and a cleaning plate; the connecting block is fixedly disposed on one side of the guide block; the drive telescopic rod is horizontally disposed, and its fixed end is fixedly connected to the connecting block; a second spring is disposed in the rodless cavity of the drive telescopic rod, and the two ends of the second spring are fixedly connected to the movable end and the fixed end of the drive telescopic rod, respectively; the connecting rod is horizontally disposed and fixedly connected to the movable end of the drive telescopic rod; the cleaning plate is vertically disposed and fixedly connected to the connecting rod; a cleaning brush is fixedly disposed on the cleaning plate, and the cleaning brush abuts against one of the scrapers.

[0013] By adopting the above technical solution, when the guide block slides back and forth in the vertical direction, the guide block drives the fixed end of the drive telescopic rod to slide synchronously in the vertical direction through the connecting block; when the guide conveyor belt drives the scraper to move, the scraper that abuts against the cleaning brush squeezes the movable end of the drive telescopic rod, the movable end of the drive telescopic rod contracts, the second spring is in a compressed state, and at the same time the guide block drives the drive telescopic rod to slide back and forth in the vertical direction, making it easy for the cleaning brush to slide up and down, thereby making it easy for the scraper to clean.

[0014] Optionally, the cleaning assembly further includes a push plate, a synchronizing rod, a locking block, and a third spring; the push plate is fixedly mounted on the guide conveyor belt, and multiple push plates are spaced apart along the annular path of the guide conveyor belt, each corresponding to one of the multiple scrapers; the synchronizing rod is fixedly mounted on the connecting rod and abuts against one of the push plates; the connecting rod has a locking groove, the locking block is located in the locking groove and is slidably connected to the connecting rod, the side of the locking block near the discharge port has a guide slope, and the side of the locking block away from the discharge port abuts against one of the push plates; the third spring is located in the locking groove, and its two ends are fixedly connected to the connecting rod and the locking block, respectively.

[0015] By adopting the above technical solution, during use, the guide conveyor belt drives multiple push plates to move synchronously. When one of the push plates abuts against the guide slope of the card block, the push plate squeezes the card block, the third spring is in a compressed state, and the card block slides into the card slot. When one of the push plates is between the card block and the synchronizing rod, the card block disengages from the push plate, the third spring resets, and the card block abuts against one side of the push plate, making it easy for the cleaning component to work synchronously with the scraper, thereby making the scraper easy to clean.

[0016] Optionally, the first sprocket, the second sprocket, the chain, the guide conveyor belt, and the cleaning assembly are each provided in two sets, and are respectively located on both sides of the width direction of the mounting box.

[0017] By adopting the above technical solution, the two sets of cleaning components work synchronously during use, making the scraper surface easy to clean.

[0018] Optionally, the material collection assembly includes a material collection box and a collection funnel; the material collection box is vertically disposed below the mounting box and located on the side of the mounting box near the discharge port; the collection funnel is vertically disposed and connected to the material collection box, and the collection funnel is used to collect the material that slips down from the discharge port.

[0019] By adopting the above technical solution, when in use, the scraper transfers the material to the discharge port, and the material slides from the discharge port into the collection funnel. The collection funnel guides the material, making it easy to collect the material into the collection box.

[0020] Optionally, the material collection assembly further includes a guide pipe; the two ends of the guide pipe are respectively connected to the bottom of the mounting box and the collection funnel, and the guide pipe is used to collect the material that falls to the bottom of the mounting box.

[0021] By adopting the above technical solution, when in use, the guide pipe will transfer the material that falls to the bottom of the installation box to the collection funnel, making it easy to collect the material into the collection box.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up drive components and cleaning components, the material adhering to the scraper surface is made easier to clean; 2. By setting up a material collection component, the material can be easily collected. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of an embodiment of this application; Figure 2 This is a cross-sectional view of an embodiment of this application; Figure 3 This is a partial cross-sectional view of the cleaning component in this embodiment of the application; Figure 4 This is a cross-sectional view of the second sprocket in this embodiment of the application; Figure 5 yes Figure 2 A magnified view of a section at point A in the middle; Figure 6 yes Figure 4 A magnified view of a section at point B.

[0024] Explanation of reference numerals in the attached drawings: 1. Mounting box; 11. Feed pipe; 12. Discharge port; 13. Frame; 2. Conveying assembly; 21. Drive motor; 22. First rotating shaft; 221. First sprocket; 23. Second rotating shaft; 231. Second sprocket; 24. Chain; 241. Guide conveyor belt; 25. Scraper; 26. Top plate; 3. Drive assembly; 31. Receiving block; 311. Receiving groove; 312. Guide groove; 32. Guide block; 33. First spring; 4. Cleaning assembly; 41. Connecting block; 42. Drive telescopic rod; 421. Second spring; 43. Connecting rod; 431. Slot; 44. Cleaning plate; 441. Cleaning brush; 45. Push plate; 46. Synchronizing rod; 47. Locking block; 48. Third spring; 5. Collecting assembly; 51. Collecting box; 52. Collecting funnel; 53. Guide pipe. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0026] This application discloses a scraper conveyor for transferring flotation concentrate. (Refer to...) Figure 1 , Figure 2 and Figure 3 A scraper conveyor for transferring flotation concentrate includes an installation box 1, a conveying assembly 2, a drive assembly 3, a cleaning assembly 4, and a collecting assembly 5. The installation box 1 is horizontally arranged, with a feed pipe 11 connected to its top, and a discharge port 12 on one side. The conveying assembly 2 is located on the installation box 1 and is used to transfer materials to the discharge port 12. The drive assembly 3 is located inside the installation box 1 and is used to drive the cleaning assembly 4. The cleaning assembly 4 is located inside the installation box 1 and is used to clean the material adhering to the surface of the conveying assembly 2. The collecting assembly 5 is located on one side of the installation box 1 and is used to collect the material transferred to the discharge port 12.

[0027] When it is necessary to transfer flotation clean coal, the conveying component 2 transfers the material entering the installation box 1 through the feed pipe 11 to the discharge port 12. The driving component 3 drives the cleaning component 4 to work synchronously. The cleaning component 4 cleans the material attached to the surface of the conveying component 2, and the collecting component 5 collects the material at the discharge port 12.

[0028] Reference Figure 1 The mounting box 1 is rectangular, the feed pipe 11 is vertical and circular, and the discharge port 12 is rectangular. A frame 13 is fixedly mounted on the mounting box 1 and placed on the ground.

[0029] Reference Figure 1 and Figure 2The conveying assembly 2 includes a drive motor 21, a first rotating shaft 22, a second rotating shaft 23, a chain 24, a scraper 25, and a top plate 26. The drive motor 21 is horizontally mounted on one side of the mounting box 1. The first rotating shaft 22 is horizontally disposed inside the mounting box 1 and rotatably connected to the mounting box 1. The first rotating shaft 22 is in the shape of a circular rod. A first sprocket 221 is fixedly disposed on the first rotating shaft 22. The first sprocket 221 is vertically disposed, and two sets of the first sprocket 221 are disposed on opposite sides of the length direction of the first rotating shaft 22.

[0030] Reference Figure 2 and Figure 4 The second rotating shaft 23 is horizontally mounted inside the mounting box 1 and rotatably connected to it. The second rotating shaft 23 is in the shape of a circular rod. A second sprocket 231 is fixedly mounted on the second rotating shaft 23. The second sprocket 231 is vertically mounted, and there are two sets of second sprockets 231, located on opposite sides of the length of the second rotating shaft 23. Two sets of chains 24 are provided, corresponding one-to-one with the two sets of first sprockets 221. The chains 24 are sequentially wound around the first sprockets 221 and the second sprockets 231. A guide conveyor belt 241 is fixedly mounted on each set of chains 24.

[0031] Reference Figure 2 The scraper 25 is rectangular and its two ends are fixedly connected to two sets of guide conveyor belts 241 respectively. Multiple scraper 25s are arranged at intervals along the annular path of the guide conveyor belts 241. The top plate 26 is horizontally arranged inside the mounting box 1 and is rectangular. The top plate 26 is fixedly connected to the mounting box 1.

[0032] In use, the material falls onto the top plate 26 through the feed pipe 11. The operator starts the drive motor 21, which drives the first rotating shaft 22 to rotate. The first rotating shaft 22 drives the first sprocket 221 to rotate synchronously. The first sprocket 221 drives the second sprocket 231 and the second rotating shaft 23 to rotate through the chain 24. The chain 24 drives the guide conveyor belt 241 to perform a cyclical motion. The scraper 25 moves synchronously with the guide conveyor belt 241 and scrapes the material on the top plate 26 toward the discharge port 12.

[0033] Reference Figure 2 and Figure 5 The drive assembly 3 includes a receiving block 31, a guide block 32, and a first spring 33. The receiving block 31 is vertically arranged and is rectangular in shape, and is fixedly connected to the inner bottom wall of the mounting box 1. A receiving groove 311 is provided on the receiving block 31, and the receiving groove 311 is rectangular in shape.

[0034] Reference Figure 5 and Figure 6A guide groove 312, which is rectangular in shape, is provided on one side of the receiving block 31. A guide block 32, also rectangular in shape, is vertically disposed within the receiving groove 311. The guide block 32 and the receiving block 31 are slidably connected vertically. A guide slope is provided on the side of the guide block 32 near the discharge port 12, and this slope is inclined downwards from the side away from the discharge port 12 to the side near the discharge port 12. A first spring 33 is vertically disposed within the receiving groove 311, and its two ends are fixedly connected to the guide block 32 and the receiving block 31, respectively. Multiple first springs 33 are spaced apart along the length of the guide block 32.

[0035] Reference Figure 3 The cleaning assembly 4 consists of two sets, located on opposite sides of the mounting box 1 in the width direction. The cleaning assembly 4 includes a connecting block 41, a drive telescopic rod 42, a connecting rod 43, a cleaning plate 44, a push plate 45, a synchronizing rod 46, a locking block 47, and a third spring 48. The connecting block 41 is fixedly mounted on one side of the guide block 32 and is rectangular in shape. The drive telescopic rod 42 is horizontally positioned, and its fixed end is fixedly connected to the connecting block 41.

[0036] Reference Figure 3 and Figure 6 A second spring 421 is horizontally arranged inside the rodless cavity of the drive telescopic rod 42. The two ends of the second spring 421 are fixedly connected to the movable end and the fixed end of the drive telescopic rod 42, respectively. A connecting rod 43 is horizontally arranged and rectangular in shape, and is fixedly connected to the movable end of the drive telescopic rod 42. A slot 431, rectangular in shape, is provided on the connecting rod 43. A cleaning plate 44 is vertically arranged and rectangular in shape, fixedly connected to the connecting rod 43, and a cleaning brush 441 is fixedly mounted on the cleaning plate 44.

[0037] A push plate 45 is fixedly mounted on the guide conveyor belt 241 and is rectangular in shape. Multiple push plates 45 are spaced apart along the annular path of the guide conveyor belt 241, each corresponding to a scraper 25. A synchronizing rod 46 is horizontally mounted and rectangular in shape, fixedly mounted on the connecting rod 43, and abuts against one of the push plates 45. A locking block 47 is located within the locking groove 431 and is rectangular in shape. The locking block 47 and the connecting rod 43 are slidably connected along the width of the mounting box 1. The side of the locking block 47 away from the discharge port 12 abuts against one of the push plates 45. A guide slope is provided on the side of the locking block 47 near the discharge port 12, and the guide slope is inclined from the side near the discharge port 12 towards the side away from the discharge port 12, moving away from the connecting rod 43. A third spring 48 is horizontally mounted within the locking groove 431, and its two ends are fixedly connected to the connecting rod 43 and the locking block 47, respectively.

[0038] When the scraper 25 moves synchronously with the guide conveyor belt 241, the scraper 25 presses against the guide slope on the guide block 32, the guide block 32 slides downward, and the first spring 33 is in a compressed state; when the scraper 25 is disengaged from the guide block 32, the first spring 33 returns to its original position, the first spring 33 drives the guide block 32 to slide upward, the guide block 32 abuts against the side of the scraper 25 near the discharge port 12, and the guide block 32 scrapes off the attached material on the side of the scraper 25 near the discharge port 12.

[0039] When the guide block 32 slides back and forth in the vertical direction, the guide block 32 drives the fixed end of the drive telescopic rod 42 to slide synchronously in the vertical direction through the connecting block 41. When the guide conveyor belt 241 drives the scraper 25 to move, the scraper 25, which abuts against the cleaning brush 441, squeezes the movable end of the drive telescopic rod 42, causing the movable end of the drive telescopic rod 42 to retract, and the second spring 421 to be in a compressed state. At the same time, the guide block 32 drives the cleaning brush 441 to slide back and forth synchronously through the drive telescopic rod 42.

[0040] Reference Figure 1 The material collection assembly 5 includes a collection box 51, a collection funnel 52, and a guide pipe 53. The collection box 51 is vertically positioned below the mounting box 1 and is rectangular in shape, located on the side of the mounting box 1 closest to the discharge port 12. The collection funnel 52 is vertically positioned and connected to the collection box 51, and is used to collect material that slips down from the discharge port 12. The two ends of the guide pipe 53 are connected to the bottom of the mounting box 1 and the collection funnel 52, respectively, and are used to collect material that falls to the bottom of the mounting box 1.

[0041] In use, scraper 25 transfers the material to discharge port 12, and the material slides from discharge port 12 into collection funnel 52. Guide pipe 53 transfers the material that falls to the bottom of installation box 1 into collection funnel 52, and collection funnel 52 transfers the material into collection box 51.

[0042] The implementation principle of a flotation concentrate transfer scraper conveyor according to an embodiment of this application is as follows: When it is necessary to transfer the flotation concentrate, the operator pours the material into the feed pipe 11, and the material falls onto the top plate 26 through the feed pipe 11. When the material falls onto the top plate 26, the operator starts the drive motor 21, which drives the first rotating shaft 22 to rotate. The first rotating shaft 22 drives the first sprocket 221 to rotate synchronously. The first sprocket 221 drives the second sprocket 231 and the second rotating shaft 23 to rotate through the chain 24. The chain 24 drives the guide conveyor belt 241 to perform a cyclical motion. The scraper 25 and the pusher 45 move synchronously with the guide conveyor belt 241. The scraper 25 scrapes the material on the top plate 26 towards the discharge port 12.

[0043] When the scraper 25 moves synchronously with the guide conveyor belt 241, the scraper 25 presses against the guide slope on the guide block 32, the guide block 32 slides downward, and the first spring 33 is in a compressed state; when the scraper 25 is disengaged from the guide block 32, the first spring 33 returns to its original position, the first spring 33 drives the guide block 32 to slide upward, the guide block 32 abuts against the side of the scraper 25 near the discharge port 12, and the guide block 32 scrapes off the attached material on the side of the scraper 25 near the discharge port 12.

[0044] When the guide block 32 slides back and forth in the vertical direction, the guide block 32 drives the fixed end of the drive telescopic rod 42 to slide synchronously in the vertical direction through the connecting block 41. When the guide conveyor belt 241 drives the scraper 25 to move, the scraper 25, which abuts against the cleaning brush 441, squeezes the movable end of the drive telescopic rod 42, causing the movable end of the drive telescopic rod 42 to retract, and the second spring 421 to be in a compressed state. At the same time, the guide block 32 drives the cleaning brush 441 to slide back and forth synchronously through the drive telescopic rod 42. The cleaning brush 441 sweeps away the material attached to the side of the scraper 25 away from the discharge port 12. The guide pipe 53 transfers the material that falls off the cleaning scraper 25 to the collection funnel 52. The collection funnel 52 transfers the material at the discharge port 12 to the collection box 51.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A floatation clean coal transfer flight bar conveyor characterized by: The utility model provides a kind of material conveying device, including installation box (1), conveying component (2), drive component (3), cleaning component (4) and material collecting component (5);The installation box (1) is horizontally arranged, the top end of the installation box (1) is communicated with feed pipe (11), and the side of the installation box (1) is provided with discharge port (12);The conveying component (2) is located on the installation box (1), and is used to transport material to the discharge port (12);The drive component (3) is located in the installation box (1), and is used to drive the cleaning component (4) to work;The cleaning component (4) is located in the installation box (1), and is used to clean the material adhered to the surface of the conveying component (2);The material collecting component (5) is located on the side of the installation box (1), and is used to collect the material transported to the discharge port (12).

2. A clean coal flotation transfer flight bar conveyor according to claim 1, characterised in that: The conveying component (2) includes drive motor (21), first rotating shaft (22), second rotating shaft (23), chain (24), scraper (25) and top plate (26);The drive motor (21) is installed on the side of the installation box (1);The first rotating shaft (22) is horizontally arranged in the installation box (1), and is rotatably connected with the installation box (1), and the first rotating shaft (22) is fixedly provided with first sprocket (221);The second rotating shaft (23) is horizontally arranged in the installation box (1), and is rotatably connected with the installation box (1), and the second rotating shaft (23) is fixedly provided with second sprocket (231);The chain (24) is sequentially arranged on the first sprocket (221) and the second sprocket (231), and the chain (24) is fixedly provided with guide conveyor belt (241);The scraper (25) is fixedly arranged on the guide conveyor belt (241), and a plurality of scrapers (25) are arranged along the annular path of the guide conveyor belt (241) at intervals;The top plate (26) is horizontally arranged in the installation box (1), and is fixedly connected with the installation box (1).

3. A clean coal flotation transfer flight bar conveyor according to claim 2, characterised in that: The drive component (3) includes accommodating block (31), guide block (32) and first spring (33);The accommodating block (31) is vertically arranged, and is fixedly connected with the inner bottom wall of the installation box (1), and the accommodating block (31) is provided with accommodating groove (311);The guide block (32) is located in the accommodating groove (311), and is slidably connected with the accommodating block (31), and the side of the guide block (32) close to the discharge port (12) is provided with guide inclined surface, and the guide block (32) is used to drive the cleaning component (4) to slide along vertical direction;The first spring (33) is located in the accommodating groove (311), and both ends are fixedly connected with the guide block (32) and the accommodating block (31) respectively.

4. A clean coal flotation transfer flight bar conveyor according to claim 3, characterised in that: The cleaning assembly (4) comprises a connecting block (41), a driving telescopic rod (42), a connecting rod (43) and a cleaning plate (44); the connecting block (41) is fixedly arranged on one side of the guide block (32); the driving telescopic rod (42) is horizontally arranged, and a fixed end is fixedly connected with the connecting block (41); a second spring (421) is arranged in a rodless cavity of the driving telescopic rod (42); two ends of the second spring (421) are fixedly connected with a movable end of the driving telescopic rod (42) and the fixed end of the driving telescopic rod (42) respectively; the connecting rod (43) is horizontally arranged, and a movable end is fixedly connected with the movable end of the driving telescopic rod (42); the cleaning plate (44) is vertically arranged, and is fixedly connected with the connecting rod (43); a cleaning brush (441) is fixedly arranged on the cleaning plate (44).

5. A clean coal transfer flight conveyor according to claim 4, characterised in that: The cleaning assembly (4) further comprises a push plate (45), a synchronous rod (46), a clamping block (47) and a third spring (48); the push plate (45) is fixedly arranged on the guide conveying belt (241); a plurality of push plates (45) are arranged at intervals along the annular path of the guide conveying belt (241), and correspond to a plurality of the scraping plates (25) one by one; the synchronous rod (46) is fixedly arranged on the connecting rod (43), and abuts against one of the push plates (45); a clamping groove (431) is formed in the connecting rod (43); the clamping block (47) is located in the clamping groove (431), and is slidably connected with the connecting rod (43); a guide inclined surface is arranged on one side of the clamping block (47) close to the discharge port (12); one side of the clamping block (47) away from the discharge port (12) abuts against one of the push plates (45); the third spring (48) is located in the clamping groove (431), and two ends thereof are fixedly connected with the connecting rod (43) and the clamping block (47) respectively.

6. A clean coal transfer flight conveyor according to claim 5, characterised in that: The first chain wheel (221), the second chain wheel (231), the chain (24), the guide conveying belt (241) and the cleaning assembly (4) are provided with two groups, and are located on two sides of the installation box (1) in the width direction respectively.

7. A clean coal transfer flight conveyor as claimed in claim 4 wherein: The material collecting assembly (5) comprises a material collecting box (51) and a collecting funnel (52); the material collecting box (51) is vertically arranged below the installation box (1), and is located on one side of the installation box (1) close to the discharge port (12); the collecting funnel (52) is vertically arranged, and is in communication with the material collecting box (51); the collecting funnel (52) is used for collecting materials falling off at the discharge port (12).

8. A clean coal transfer flight conveyor according to claim 7, characterised in that: The material collecting assembly (5) further comprises a material guide pipe (53); two ends of the material guide pipe (53) are in communication with the bottom of the installation box (1) and the collecting funnel (52) respectively; the material guide pipe (53) is used for collecting materials falling off on the bottom of the installation box (1).

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