A roller device of a raw coal impurity removing and screening machine

Abstract

The present application relates to the technical field of coal processing, in particular to a raw coal impurity removal and screening machine roller device, which comprises a screening box, a feeding port is arranged on one side of the screening box, and a first discharging frame and a second discharging frame are arranged on both sides of the bottom of the screening box. The present application screens out the light impurities in the raw coal by using the impurity removal assembly in the interior of the screening box, and cooperates with the filtering and recycling mechanism arranged on one side of the interior of the screening box to recycle and process the light impurities on the impurity removal assembly, effectively solves the problem of the blockage of the production system washing caused by the mixing of the light impurities into the raw coal, and realizes the automatic screening and recycling of the light impurities in the raw coal by the mutual cooperation of the multiple mechanical mechanisms. Compared with the manual sorting mode, the device can effectively improve the impurity removal efficiency of the raw coal, the light impurities in the raw coal are cleaned more thoroughly, and finally the raw coal can be screened and processed, improving the subsequent processing efficiency of the raw coal.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coal processing, in particular to a drum device of a raw coal impurity removal and screening machine. BACKGROUND

[0002] In the process of underground mining, a large amount of light impurities such as wood, rubber, hemp rope and woven bags and iron impurities such as anchor rods, metal nets and steel bars are often mixed. At present, most of the mines and plants use roller screens instead of vibrating screens, and light impurities are easily squeezed by the screen sheet and enter the mixed coal through the screen gap, and then enter the coal preparation plant. After these impurities enter the coal preparation plant, they will cause production system washing and selection blockage, and each system start-stop will cause a large amount of invalid cost, such as some reagent consumption, material consumption, power consumption, etc. Secondly, it will also affect the quality of clean coal products, and at the same time, it will increase the safety hazards of climbing and limited space operation when dealing with blockage. At present, there are many processing equipment and processes for iron impurities, which are relatively mature, but there are few special processing equipment for light impurities in coal, and some mines use manual sorting, which has high labor intensity, poor operation environment, low safety factor, and incomplete impurity treatment, which seriously affects the intelligent process of mines and coal preparation plants.

[0003] Therefore, we propose a drum device of a raw coal impurity removal and screening machine. SUMMARY

[0004] In view of the shortcomings of the prior art, the present application provides a drum device of a raw coal impurity removal and screening machine, which is used to automatically screen and recycle light impurities in raw coal and improve the impurity removal efficiency of raw coal.

[0005] To achieve the above purpose, the present application realizes the following technical scheme: a drum device of a raw coal impurity removal and screening machine, comprising a screening box, a feeding port is arranged on one side of the screening box, first and second discharge frames are arranged on both sides of the bottom of the screening box, a discharge port is further arranged on one side of the first discharge frame, a fixed frame is arranged in the interior of the screening box, a guide plate is arranged on one side of the fixed frame, a distribution frame is arranged on one side of the interior of the screening box, a distribution assembly is arranged in the interior of the distribution frame, an impurity removal assembly is arranged in the interior of the screening box, and a filtering and recycling mechanism is further arranged on one side of the interior of the screening box.

[0006] The impurity removal assembly comprises a first rotating rod and a tooth plate frame, the first rotating rod is rotatably arranged in the interior of the screening box, and the tooth plate frame is fixedly arranged on the surface of the first rotating rod, a guide frame is arranged below the interior of the screening box, the top of the guide frame is connected with the bottom of the fixed frame, a screen is arranged on one side of the interior of the fixed frame, a discharge plate is arranged on the other side of the interior of the fixed frame, and a second micro electric cylinder is arranged on one side of the discharge plate.

[0007] The filtering and recycling mechanism comprises a recycling frame, a second rotating rod is rotationally arranged on one side of the inside of the screening box, and a recycling frame is fixedly arranged on the surface of the second rotating rod, one side of the recycling frame is rotationally arranged in interlaced mode with the toothed plate frame, and a cleaning frame is also rotationally arranged on one side of the inside of the screening box, and a cleaning groove matched with the recycling frame is arranged on one side of the cleaning frame.

[0008] Preferably, a fixed plate is fixedly arranged on the surface of the toothed plate frame, and a scraping plate is arranged in the inside of the fixed plate through a third micro electric cylinder.

[0009] Preferably, a partition plate is arranged on one side of the bottom of the fixed frame, the bottom of the partition plate extends to the inside of the second discharging frame, a discharging cavity is arranged between one side of the partition plate and one side of the inner wall of the screening box, the bottom end of the discharging cavity extends to the bottom of the second discharging frame, small-particle-diameter raw coal discharging cavities and large-particle-diameter raw coal discharging cavities are formed between the two sides of the guide plate and the partition plate and the guide plate respectively, and the screen is located above the small-particle-diameter raw coal discharging cavities.

[0010] Preferably, the material distributing assembly comprises a rotating frame, a material distributing port is arranged on one side of the inner wall of the material distributing frame, and a rotating frame is rotationally arranged in the inside of the material distributing port, a plurality of material distributing plates are arranged on the surface of the rotating frame, and a material falling frame is further arranged in the inside of the material distributing frame, and a discharging plate is rotationally arranged in the inside of the material falling frame.

[0011] Preferably, one side of the discharging plate is rotationally connected with the inside of the material falling frame, first micro electric cylinders are arranged on the two sides of the bottom of the discharging plate, the driving end of the first micro electric cylinder is movably connected with the bottom of the discharging plate, and the other end of the first micro electric cylinder is movably connected with the inside of the material falling frame.

[0012] Preferably, a first servo cylinder is arranged on one side of the inner wall of the screening box, and a lifting frame is arranged on the driving end of the first servo cylinder, a second servo cylinder is arranged in the inside of the lifting frame, and a material returning frame is arranged on the driving end of the second servo cylinder.

[0013] Preferably, a servo motor is further arranged on the front of the screening box, one end of the first rotating rod and one end of the second rotating rod both extend to the front of the screening box through the screening box, a first belt pulley and a second belt pulley are arranged on one end of the first rotating rod and one end of the second rotating rod respectively, and the surface of the first belt pulley and the surface of the second belt pulley are drivingly connected through a belt.

[0014] Preferably, a transmission wheel is rotationally arranged in the inside of the second belt pulley, a driven wheel is fixedly arranged on the surface of the second rotating rod, the surface of the driven wheel is drivingly engaged with the surface of the transmission wheel, the surface of the transmission wheel is drivingly engaged with the inner wall of the second belt pulley, and one end of the output shaft of the servo motor is fixedly connected with the inside of the second belt pulley.

[0015] Compared with the prior art, the following beneficial effects are achieved:

[0016] 1. The raw coal is fed into the inside of the distribution frame through the feeding port, the raw coal of different particle sizes is sorted and treated by the distribution assembly in the inside of the distribution frame, the large raw coal is left in the inside of the distribution frame, so as to avoid the raw coal from entering the inside of the screening box and damaging the impurity removal assembly, and the impurity removal efficiency of the impurity removal assembly on the raw coal is improved; the large raw coal accumulated in the inside of the distribution frame is sent out through the second discharge frame, after the large raw coal is crushed, the large raw coal is sent into the inside of the distribution frame through the feeding port for distribution treatment, and the impurity removal efficiency on the raw coal is improved; the light impurities in the raw coal are screened out by the impurity removal assembly in the inside of the screening box, the light impurities on the impurity removal assembly are recycled by the filtering and recycling mechanism arranged on one side in the inside of the screening box, the recycled light impurities are sent out through the discharge port on one side of the first discharge frame, the light impurities in the raw coal are screened out and automatically recycled, the problem that the light impurities mixed in the raw coal cause blockage of the production system is effectively solved, the automatic screening and recycling of the light impurities in the raw coal are realized by the cooperation of the plurality of mechanical mechanisms, compared with the manual picking mode, the raw coal impurity screening and separating machine drum device can effectively improve the impurity removal efficiency of the raw coal, the light impurities in the raw coal are cleaned more thoroughly, and finally the raw coal can be screened and treated, the raw coal sent out from the drum can be directly applied to the coal preparation system, and the processing efficiency of the raw coal is improved.

[0017] 2. The raw coal is sent above the fixed frame, the first rotating rod is controlled to rotate, the toothed plate frame is driven by the first rotating rod to rotate above the fixed frame, and the light impurities in the raw coal are screened out by the toothed plate frame, wherein the toothed plate frame adopts a parabolic toothed plate structure, the contact path and time of the raw coal and the toothed plate are effectively increased, the blocky and fibrous impurities can be effectively separated, and the raw coal with a particle size smaller than the screen hole of the screen is sent out through the small-particle-size raw coal discharge chamber arranged at the bottom of the fixed frame, after the screening and recycling of the light impurities in the raw coal are completed, one side of the discharge plate arranged at the bottom of the fixed frame is controlled to be flipped downward, then the scraping plate is controlled to extend from the inside of the fixed plate until one side of the scraping plate contacts the top of the fixed frame, and the raw coal left on the top of the fixed frame is sent out through the large-particle-size raw coal discharge chamber at the bottom of the discharge plate by the scraping plate, so that the automatic sorting of the raw coal with different particle sizes is realized.

[0018] 3. By setting the staggered rotation between the recycling frame and the toothed plate frame, the recycling frame can recycle the blocky, fibrous and other shaped impurities on the toothed plate frame. Under the action of gravity, the impurities fall from the surface of the recycling frame to the top of the guide plate. At the same time, the cleaning frame cleans the impurities wound on the recycling frame. Periodically control the downward rotation of the cleaning frame, and then drive the material returning frame to the side of the cleaning frame by the driving end of the second servo cylinder. Move the lifting frame downward by the driving end of the first servo cylinder to clean the impurities on the cleaning frame, ensure the cleanliness of the surface of the recycling frame and the cleaning frame, and improve the screening efficiency of the impurities in the raw coal. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic view of the structure of the drum device of the raw coal impurity removal and screening machine according to an embodiment of the present application.

[0020] Figure 2 It is a schematic view of the structure of the material screening box and the material distribution frame according to an embodiment of the present application.

[0021] Figure 3 It is a schematic view of the structure of the material distribution frame and the rotating frame according to an embodiment of the present application.

[0022] Figure 4 It is a schematic view of the internal structure of the material screening box according to an embodiment of the present application.

[0023] Figure 5 It is a schematic view of the structure of the material returning frame according to an embodiment of the present application.

[0024] Figure 6 It is a schematic view of the structure of the first pulley and the second pulley according to an embodiment of the present application.

[0025] In the figure, 1 is a material screening box, 2 is a feeding port, 3 is a first material returning frame, 4 is a second material returning frame, 5 is a discharging port, 6 is a fixed frame, 7 is a guide plate, 8 is a material distribution frame, 11 is a rotating frame, 12 is a material distribution port, 13 is a material falling frame, 14 is a material discharging plate, 15 is a partition plate, 21 is a first rotating rod, 22 is a toothed plate frame, 23 is a guide frame, 24 is a screen, 25 is a discharging plate, 26 is a fixed plate, 31 is a recycling frame, 32 is a second rotating rod, 33 is a cleaning frame, 34 is a first servo cylinder, 35 is a lifting frame, 36 is a second servo cylinder, 37 is a material returning frame, 41 is a servo motor, 42 is a first pulley, 43 is a second pulley, 44 is a transmission wheel, and 45 is a driven wheel. DETAILED DESCRIPTION

[0026] With reference to the accompanying drawings: clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of the present application.

[0027] Embodiment 1

[0028] Please refer to Figures 1 to 6 As shown in the figure, a raw coal impurity removal and screening machine roller device includes a screening box 1, the screening box 1 is provided with a feeding port 2 on one side, and the bottom of the screening box 1 is provided with a first discharge frame 3 and a second discharge frame 4 on both sides, respectively, the first discharge frame 3 is further provided with a discharge port 5 on one side, the inside of the screening box 1 is provided with a fixing frame 6, and the fixing frame 6 is provided with a guide plate 7 on one side, one side of the inside of the screening box 1 is provided with a distribution frame 8, and the inside of the distribution frame 8 is provided with a distribution assembly, the inside of the screening box 1 is provided with an impurity removal assembly, and one side of the inside of the screening box 1 is further provided with a filtering and recycling mechanism.

[0029] It should be noted that when the raw coal is subjected to impurity removal and screening treatment, the raw coal is passed into the inside of the distribution frame 8 through the feeding port 2, and the distribution assembly in the inside of the distribution frame 8 is used to sort and treat raw coal of different particle size specifications, so that large pieces of raw coal are left in the inside of the distribution frame 8, thereby avoiding the raw coal from entering the inside of the screening box 1 to damage the impurity removal assembly, and improving the impurity removal efficiency of the impurity removal assembly on the raw coal; the large pieces of raw coal accumulated in the inside of the distribution frame 8 are sent out through the second discharge frame 4, and after the large pieces of raw coal are crushed, they are sent into the inside of the distribution frame 8 through the feeding port 2 for distribution treatment, thereby improving the impurity removal efficiency of the raw coal; the light impurities in the raw coal are screened out by the impurity removal assembly in the inside of the screening box 1, and the light impurities on the impurity removal assembly are recycled by the filtering and recycling mechanism provided on one side of the inside of the screening box 1; the recycled light impurities are sent out through the discharge port 5 on one side of the first discharge frame 3, thereby realizing the screening and automatic recycling of the light impurities in the raw coal, effectively solving the problem of blockage of the production system caused by the mixing of light impurities in the raw coal, and realizing the automatic screening and recycling of the light impurities in the raw coal by the cooperation of multiple mechanical mechanisms. Compared with the manual sorting method, the raw coal impurity removal and screening machine roller device can effectively improve the impurity removal efficiency of the raw coal, and the light impurities in the raw coal can be cleaned more thoroughly. Finally, the raw coal can be subjected to screening treatment, and the raw coal sent out from the roller can be directly applied to the coal preparation system, thereby improving the processing efficiency of the raw coal.

[0030] Further, the distributing assembly comprises a rotating frame 11, one side of the inner wall of the distributing frame 8 is provided with a distributing port 12, and the rotating frame 11 is rotatably arranged in the distributing port 12, the surface of the rotating frame 11 is provided with a plurality of distributing plates, the lower part of the inside of the distributing frame 8 is further provided with a discharging frame 13, and the discharging frame 13 is rotatably arranged with a discharging plate 14, one side of the discharging plate 14 is rotatably connected with the inside of the discharging frame 13, and the bottom of the discharging plate 14 is provided with a first micro electric cylinder on both sides, the driving end of the first micro electric cylinder is movably connected with the bottom of the discharging plate 14, and the other end of the first micro electric cylinder is movably connected with the inside of the discharging frame 13, the driving end of the first micro electric cylinder drives one side of the discharging plate 14 to rotate downward in the inside of the discharging frame 13, so as to discharge the raw coal accumulated on the discharging frame 13, and avoid that the large amount of raw coal accumulated on the discharging frame 13 reduces the distributing efficiency of the raw coal; one side of the bottom of the fixed frame 6 is provided with a partition plate 15, and the bottom of the partition plate 15 extends to the inside of the second discharging frame 4, and a discharging cavity is arranged between one side of the partition plate 15 and one side of the inner wall of the screening box 1, and the bottom end of the discharging cavity extends to the bottom of the second discharging frame 4.

[0031] It should be noted that when the raw coal is distributed, the rotating frame 11 is controlled to rotate, the rotating frame 11 is driven by a motor, the raw coal with a particle size greater than the distributing port 12 is left in the inside of the distributing frame 8 by cooperation of the rotating frame 11 and the distributing port 12, and the raw coal smaller than the distributing port 12 passes through the distributing port 12 and falls on the fixed frame 6, so that the automatic distribution of the raw coal is realized, the impurity removal efficiency of the raw coal is effectively improved, and finally the driving end of the first micro electric cylinder drives one side of the discharging plate 14 to rotate downward in the inside of the discharging frame 13, so that the raw coal accumulated on the discharging frame 13 is discharged from the inside of the second discharging frame 4 through the discharging cavity.

[0032] Further, the impurity removal assembly comprises a first rotating rod 21 and a toothed plate frame 22, the inside of the screening box 1 is rotatably provided with the first rotating rod 21, and the surface of the first rotating rod 21 is fixedly provided with the toothed plate frame 22, the lower part of the inside of the screening box 1 is provided with a guide frame 23, and the top of the guide frame 23 is connected with the bottom of the fixed frame 6, the two sides of the guide frame 23 form a small-particle-size raw coal discharging cavity and a large-particle-size raw coal discharging cavity between the partition plate 15 and the guide plate 7, one side of the inside of the fixed frame 6 is provided with a screen 24, and the screen 24 is located above the small-particle-size raw coal discharging cavity, the other side of the inside of the fixed frame 6 is provided with a discharging plate 25, and one side of the discharging plate 25 is provided with a second micro electric cylinder, one side of the discharging plate 25 is rotatably connected with the inside of the fixed frame 6, the driving end of the second micro electric cylinder is movably connected with the bottom of the discharging plate 25, and the other end of the second micro electric cylinder is movably connected with the bottom of the fixed frame 6.

[0033] The surface of the toothed plate frame 22 is fixedly provided with a fixed plate 26, and the inside of the fixed plate 26 is provided with a scraping plate through a third micro electric cylinder. After the light impurities in the raw coal are screened out, the one side of the discharge plate 25 arranged at the bottom of the fixed frame 6 is controlled to be flipped downward, then the scraping plate is controlled to be stretched out from the inside of the fixed plate 26 until the one side of the scraping plate contacts with the top of the fixed frame 6, and the raw coal left on the top of the fixed frame 6 is sent out through the large-particle-size raw coal discharge cavity at the bottom of the discharge plate 25 by the scraping plate, so that the automatic sorting treatment of raw coal with different particle sizes is realized.

[0034] It should be noted that when the light impurities in the raw coal are screened out, the raw coal is sent to the upper side of the fixed frame 6, the first rotating rod 21 is controlled to rotate, the toothed plate frame 22 is driven to rotate above the fixed frame 6 by the first rotating rod 21, and the light impurities in the raw coal are screened out by the toothed plate frame 22. The toothed plate frame 22 adopts a parabolic toothed plate structure, which effectively increases the contact path and time of the raw coal with the toothed plate, and can effectively separate block-shaped and fibrous impurities. In addition, the screen 24 arranged at the bottom of the fixed frame 6 is used to send out the raw coal with a particle size smaller than the screen hole of the screen 24 through the small-particle-size raw coal discharge cavity. After the light impurities in the raw coal are screened out, the one side of the discharge plate 25 arranged at the bottom of the fixed frame 6 is controlled to be flipped downward, then the scraping plate is controlled to be stretched out from the inside of the fixed plate 26 until the one side of the scraping plate contacts with the top of the fixed frame 6, and the raw coal left on the top of the fixed frame 6 is sent out through the large-particle-size raw coal discharge cavity at the bottom of the discharge plate 25 by the scraping plate, so that the automatic sorting treatment of raw coal with different particle sizes is realized.

[0035] Further, the filtering and recycling mechanism includes a recycling frame 31, a second rotating rod 32 is rotatably arranged at one side in the sieve box 1, and the surface of the second rotating rod 32 is fixedly provided with the recycling frame 31. One side of the recycling frame 31 is rotatably arranged with the toothed plate frame 22. One side in the sieve box 1 is also rotatably provided with a cleaning frame 33, and one side of the cleaning frame 33 is provided with a cleaning groove matched with the recycling frame 31. One side of the inner wall of the sieve box 1 is provided with a first servo cylinder 34, and the driving end of the first servo cylinder 34 is provided with a lifting frame 35. The inside of the lifting frame 35 is provided with a second servo cylinder 36, and the driving end of the second servo cylinder 36 is provided with a material returning frame 37.

[0036] It should be noted that after the toothed plate frame 22 is used to screen out the blocky, fibrous and other shaped impurities in the raw coal, the blocky, fibrous and other shaped impurities are left on the toothed plate frame 22, at this time, the staggered rotation is arranged between the recycling frame 31 and the toothed plate frame 22, the recycling frame 31 is used to recycle the blocky, fibrous and other shaped impurities on the toothed plate frame 22, under the action of gravity, the impurities fall from the surface of the recycling frame 31 to the upper side of the guide plate 7, and the impurities wound on the recycling frame 31 are cleaned by the cleaning frame 33, the cleaning frame 33 is periodically controlled to rotate downward, the material withdrawal frame 37 is driven to move close to one side of the cleaning frame 33 by the driving end of the second servo cylinder 36, the lifting frame 35 is driven to move downward by the driving end of the first servo cylinder 34, the impurities on the cleaning frame 33 are cleaned by the material withdrawal frame 37, the surface of the recycling frame 31 and the cleaning frame 33 is ensured to be clean, and thus the screening efficiency of the impurities in the raw coal is improved.

[0037] Further, the front surface of the screening box 1 is also provided with a servo motor 41, one end of the first rotating rod 21 and the second rotating rod 32 penetrates the screening box 1 and extends to the front surface of the screening box 1, and the one end of the first rotating rod 21 and the second rotating rod 32 is respectively provided with a first pulley 42 and a second pulley 43, the surfaces of the first pulley 42 and the second pulley 43 are connected by a belt transmission, a transmission wheel 44 is rotatably arranged in the second pulley 43, and a driven wheel 45 is fixedly arranged on the surface of the second rotating rod 32, the surface of the driven wheel 45 is in meshing transmission with the surface of the transmission wheel 44, and the surface of the transmission wheel 44 is in meshing transmission with the inner wall of the second pulley 43, and the inside of the second pulley 43 is fixedly connected with one end of the output shaft of the servo motor 41.

[0038] It should be noted that when the impurities in the raw coal are screened out, the second pulley 43 is driven to rotate clockwise by the output shaft of the servo motor 41, the second pulley 43 drives the first pulley 42 to rotate synchronously by the belt, so that the second rotating rod 32 rotates clockwise in the inside of the screening box 1, at the same time, the transmission wheel 44 in the second pulley 43 drives the driven wheel 45 to rotate counterclockwise, so that the first rotating rod 21 rotates counterclockwise in the inside of the screening box 1, the toothed plate frame 22 and the recycling frame 31 are respectively rotated in different directions in the inside of the screening box 1, and thus the recycling efficiency of the recycling frame 31 to the impurities on the toothed plate frame 22 is improved.

[0039] Example 2

[0040] In this embodiment, a method for using the drum device of the raw coal impurity removal and screening machine is also disclosed, which specifically includes the following steps:

[0041] The rotating frame 11 is controlled to rotate, and the rotating frame 11 is driven by a motor. The rotating frame 11 and the distribution port 12 are matched to allow the raw coal with a particle size greater than the distribution port 12 to remain inside the distribution frame 8, and the raw coal smaller than the distribution port 12 passes through the distribution port 12 and falls on the fixed frame 6, thereby realizing automatic distribution of the raw coal;

[0042] Finally, one side of the discharging plate 14 is driven by the driving end of the first micro electric cylinder to rotate downward inside the material falling frame 13, thereby discharging the raw coal accumulated on the material falling frame 13 through the discharging cavity from the inside of the second discharging frame 4;

[0043] The raw coal is sent to the top of the fixed frame 6. The output shaft of the servo motor 41 drives the second pulley 43 to rotate clockwise. The second pulley 43 drives the first pulley 42 to rotate synchronously through the belt, thereby allowing the second rotating rod 32 to rotate clockwise inside the screening box 1. Meanwhile, the transmission wheel 44 inside the second pulley 43 drives the driven wheel 45 to rotate counterclockwise, thereby allowing the first rotating rod 21 to rotate counterclockwise inside the screening box 1. The toothed plate frame 22 and the recovery frame 31 rotate in different directions inside the screening box 1. The first rotating rod 21 drives the toothed plate frame 22 to rotate above the fixed frame 6, and the toothed plate frame 22 screens out the light impurities in the raw coal.

[0044] The screen 24 arranged at the bottom of the fixed frame 6 is used to discharge the raw coal with a particle size smaller than the screen hole of the screen 24 through the small-particle-size raw coal discharging cavity. After the screening of the light impurities in the raw coal is completed, one side of the discharging plate 25 arranged at the bottom of the fixed frame 6 is controlled to flip downward. Then the scraping plate is controlled to extend from the inside of the fixed plate 26 until one side of the scraping plate contacts the top of the fixed frame 6. The raw coal left on the top of the fixed frame 6 is discharged through the large-particle-size raw coal discharging cavity at the bottom of the discharging plate 25.

[0045] After the blocky, fibrous, and other shaped impurities in the raw coal are screened out by the toothed plate frame 22, the blocky, fibrous, and other shaped impurities remain on the toothed plate frame 22. At this time, the recovery frame 31 is arranged to rotate alternately with the toothed plate frame 22, so that the recovery frame 31 recovers the blocky, fibrous, and other shaped impurities on the toothed plate frame 22. Under the action of gravity, the impurities fall from the surface of the recovery frame 31 to the top of the guide plate 7. Meanwhile, the impurities wound on the recovery frame 31 are cleaned by the cleaning frame 33. Periodically, the cleaning frame 33 is controlled to rotate downward. Then the material withdrawal frame 37 is driven by the driving end of the second servo cylinder 36 to approach the side of the cleaning frame 33. The material withdrawal frame 37 cleans the impurities on the cleaning frame 33 by moving downward under the driving of the driving end of the first servo cylinder 34.

[0046] Meanwhile, the contents not described in detail in the specification all belong to the existing technology known to those skilled in the art.

[0047] It has to be noted that, in the present document, the terms "first", "second", etc. merely serve to identify different entities or actions from each other, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprising", "containing", or any other similar term are intended to encompass non-exclusive inclusions, such that a process, method, article, or apparatus that comprises a list of elements does not necessarily include only those elements, but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0048] While embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, changes, and alterations can be made by those skilled in the art without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A raw coal impurity removal and screening machine roller device, comprising a screening box (1), one side of the screening box (1) is provided with a feeding port (2), and the bottom of the screening box (1) is provided with a first discharging frame (3) and a second discharging frame (4) on both sides respectively, characterized in that: The first discharge rack (3) is also provided with a discharge port (5) on one side. The screen box (1) is provided with a fixed frame (6) inside, and a guide plate (7) is provided on one side of the fixed frame (6). The screen box (1) is provided with a material distribution rack (8) on one side inside, and a material distribution component is provided inside the material distribution rack (8). The screen box (1) is provided with a cleaning component inside, and a filter recovery mechanism is provided on one side inside the screen box (1). The material distribution assembly includes a rotating frame (11), a material distribution port (12) is provided on one side of the inner wall of the material distribution frame (8), and the rotating frame (11) is rotatably arranged inside the material distribution port (12). Several material distribution plates are provided on the surface of the rotating frame (11). A material dropping frame (13) is also provided below the inside of the material distribution frame (8), and a material discharge plate (14) is rotatably arranged inside the material dropping frame (13). One side of the material discharge plate (14) is rotatably connected to the inside of the material dropping frame (13), and a first micro electric cylinder is provided on both sides of the bottom of the material discharge plate (14). The driving end of the first micro electric cylinder is movably connected to the bottom of the material discharge plate (14), and the other end of the first micro electric cylinder is movably connected to the inside of the material dropping frame (13). The impurity removal assembly includes a first rotating rod (21) and a toothed plate frame (22). The first rotating rod (21) is rotatably arranged inside the screening box (1), and the toothed plate frame (22) is fixedly arranged on the surface of the first rotating rod (21). A guide frame (23) is arranged at the bottom inside the screening box (1), and the top of the guide frame (23) is connected to the bottom of the fixed frame (6). A screen (24) is arranged on one side inside the fixed frame (6), and a discharge plate (25) is arranged on the other side inside the fixed frame (6). A second micro electric cylinder is arranged on one side of the discharge plate (25). A fixed plate (26) is fixedly arranged on the surface of the toothed plate frame (22), and a scraper is arranged inside the fixed plate (26) through a third micro electric cylinder. A partition (15) is provided on one side of the bottom of the fixed frame (6), and the bottom of the partition (15) extends into the interior of the second discharge frame (4). A discharge cavity is provided between one side of the partition (15) and one side of the inner wall of the screen box (1), and the bottom end of the discharge cavity extends into the bottom of the second discharge frame (4). The two sides of the guide frame (23) form a small-diameter raw coal discharge cavity and a large-diameter raw coal discharge cavity between the partition (15) and the guide plate (7), respectively. The screen (24) is located above the small-diameter raw coal discharge cavity. The filtration and recycling mechanism includes a recycling frame (31). A second rotating rod (32) is rotatably arranged on one side inside the screening box (1), and the recycling frame (31) is fixedly arranged on the surface of the second rotating rod (32). One side of the recycling frame (31) is rotatably arranged with the toothed plate frame (22). A cleaning frame (33) is also rotatably arranged on one side inside the screening box (1), and a cleaning groove that cooperates with the recycling frame (31) is provided on one side of the cleaning frame (33). A first servo electric cylinder (34) is provided on one side of the inner wall of the screening box (1), and a lifting frame (35) is provided at the drive end of the first servo electric cylinder (34). A second servo electric cylinder (36) is provided inside the lifting frame (35), and a material ejection frame (37) is provided at the drive end of the second servo electric cylinder (36).

2. A drum apparatus for a raw coal impurity removal and sizing machine according to claim 1, characterized in that: A servo motor (41) is also provided on the front of the screening box (1). One end of the first rotating rod (21) and the second rotating rod (32) both pass through the screening box (1) and extend to the front of the screening box (1). One end of the first rotating rod (21) and the second rotating rod (32) are respectively provided with a first pulley (42) and a second pulley (43). The surfaces of the first pulley (42) and the second pulley (43) are connected by belt drive.

3. The raw coal impurity removal screening drum device according to claim 2, characterized in that: The second pulley (43) has a drive wheel (44) rotatably mounted inside, and a driven wheel (45) is fixedly mounted on the surface of the second rotating rod (32). The surface of the driven wheel (45) meshes with the surface of the drive wheel (44) for transmission, and the surface of the drive wheel (44) meshes with the inner wall of the second pulley (43) for transmission. The interior of the second pulley (43) is fixedly connected to one end of the output shaft of the servo motor (41).

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