A dense medium cyclone for separating coal
By introducing components such as a classifying hydrocyclone and a densitometer into the interference bed separator, the problem of high ash and fine mud contamination in clean coal has been solved, achieving efficient separation and improved clean coal quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- SHANXI TIANDI WANGPO COAL IND CO LTD
- Filing Date
- 2024-05-31
- Publication Date
- 2026-07-31
AI Technical Summary
Existing interference bed separators still have high ash and fine mud contamination in the clean coal after separation, which affects the separation effect.
By introducing a classifying hydrocyclone, densitometer, tailings inlet and flushing inlet valves into the interference bed separator, combined with a feed sleeve, water inlet coil and shaft cleaning system, precise feeding, uniform moisture control and automatic adjustment are achieved, thereby improving the separation accuracy and desliming effect.
It effectively removes large particulate impurities, reduces high-ash fine mud pollution, improves the ash quality of sorted clean coal, enhances sorting accuracy and efficiency, simplifies desliming and dewatering processes, and increases clean coal yield.
Smart Images
Figure CN118320988B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of interference bed separator technology, specifically to an interference bed separator for coarse coal slime separation. Background Technology
[0002] The interference bed separator, as the earliest invented liquid-solid fluidized bed separator, is widely used in the coarse coal slime washing industry. During washing, the lower limit of the coal slime particle size is 0.15mm, and the upper limit is 2mm. Its working principle is based on fluidization technology, which can effectively separate particles according to differences in particle size or density, thereby achieving material grading or sorting. Specifically, coarse coal slime particles diffuse freely under the action of rising water flow, becoming a fluidized bed due to the density and particle size differences. When the fluidized bed stabilizes, particles with a density lower than the average density of the entire bed rise to the surface and enter the clean coal product through the overflow port at the top; particles with a density higher than the average density of the entire bed sink into the underflow and are discharged through the discharge port, thus achieving separation.
[0003] With the development of the times and the needs of society, the current coal market has increasingly strict requirements for the ash content of coal products. Directly using an interference bed separator to separate coal slime may result in serious pollution of the clean coal due to the characteristics of the working principle mentioned above. Even if a graded cyclone desliming device is used before feeding or after separation, including desliming devices such as hydrocyclones, high-frequency screens and coal slime centrifuges, a portion of high-ash fine mud will still exist in the final clean coal, affecting the separation effect. Summary of the Invention
[0004] This invention proposes a coarse coal slime separation machine using an interference bed separator, which solves the problem that high-ash fine mud still exists in the clean coal after separation, which is unavoidable in existing interference bed separator technologies.
[0005] The technical solution of the present invention is as follows: A coarse coal slime separation machine using an interference bed separator includes: The cylindrical body has a sorting chamber, which has a feed inlet, an overflow outlet, a tailings outlet, and a water inlet. A classifying hydrocyclone, wherein the classifying hydrocyclone is disposed on the cylinder and located at the feed inlet; A densitometer is mounted on the cylinder and located within the sorting chamber. The bottom of the cylinder also has a flushing port, which is located on one side of the tailings outlet. Both the tailings outlet and the flushing port are equipped with valves.
[0006] As a further technical solution, the classifying hydrocyclone has an inlet, an outlet, and a screening channel, the outlet being connected to the feed inlet, and the screening channel being connected to the overflow outlet.
[0007] As a further technical solution, it also includes: A feeding sleeve is disposed at the top of the cylinder and located inside the sorting chamber. The sorting chamber and the feeding sleeve are in communication with each other. The feeding sleeve has a connecting port. A connecting pipe, one end of which is connected to the connecting port, and the other end of which is connected to the feed port.
[0008] As a further technical solution, the feed sleeve is cylindrical, the top of the feed sleeve has the connecting port, and the axis of the connecting port passes through the central axis of the feed sleeve, and the connecting pipe is arc-shaped.
[0009] As a further technical solution, it also includes: A water inlet coil is installed on the inner wall of the cylinder, located inside the sorting chamber, and between the densitometer and the tailings inlet. One end of the water inlet coil is connected to the water inlet. The water inlet coil has several drain outlets, which are arranged at equal intervals along the cross-section of the cylinder.
[0010] As a further technical solution, the inner wall of the cylinder also has an annular groove, the annular groove communicating with the sorting cavity, and further includes: A plurality of rotating shafts are rotatably disposed on the inner wall of the cylinder, and the plurality of rotating shafts are all located within the annular groove. The plurality of rotating shafts are arranged along the circumference of the annular groove, and the axial direction of the rotating shafts is parallel to the axial direction of the annular groove. A cleaning plate is mounted on the rotating shaft.
[0011] As a further technical solution, after the rotating shaft rotates, a plurality of the cleaning plates form an annular inner wall, and after the rotating shaft rotates, the cleaning plates extend into or out of the annular groove.
[0012] As a further technical solution, the cylinder also has an annular inner cavity and further includes: A toothed ring is rotatably mounted on the cylinder and located within the annular inner cavity. A rotating shaft passes through the annular inner cavity, and several rotating shafts mesh with the toothed ring. When the toothed ring rotates, it drives the rotating shaft to rotate.
[0013] As a further technical solution, a gap exists between the rotating shaft and the inner wall of the annular groove, and the system further includes: A cleaning substrate, which is annular, is rotatably mounted on the cylinder and located within the gap. Several rotating shafts are located inside the cleaning substrate. The top and bottom of the cleaning substrate each have a toothed ring. The rotating shafts have teeth. The toothed rings at the top and bottom of the cleaning substrate mesh with the teeth. The rotation of the rotating shafts drives the cleaning substrate to rotate. A brush, the brush being disposed on the cleaning substrate.
[0014] As a further technical solution, the brush is radially movable on the cleaning substrate along the annular groove. The inner wall of the annular groove has a wavy part with a wavy groove. One end of the brush is slidably disposed in the wavy groove. After the cleaning substrate rotates, it drives the brush to move radially along the annular groove.
[0015] The working principle and beneficial effects of this invention are as follows: In this invention, the separation chamber inside the cylinder is equipped with a precise feed inlet, overflow outlet, tailings outlet, and water inlet. This layout ensures uniform input of coal slurry and moisture control, as well as orderly separation of products. The density meter accurately monitors the material density in the separation chamber, which can achieve a basically uniform bed density or separation density, realize automatic adjustment, and improve separation accuracy. At the same time, valves are installed at the bottom tailings outlet and flushing outlet, specifically bottom flow valves, which can also realize automatic control and improve the desliming effect.
[0016] Furthermore, the grading hydrocyclone installed at the feed inlet effectively removes large particulate impurities and performs preliminary concentration, reducing the burden on subsequent sorting processes, lowering the pollution from high-ash fine mud, simplifying the subsequent desliming and dewatering process, reducing the ash content of the clean coal after sorting, reducing the pollution of clean coal by high-ash fine mud, and improving the sorting effect.
[0017] During operation, materials such as coal slime are processed by the classifying hydrocyclone and then enter the separation chamber through the feed inlet. Water flows from bottom to top through the bottom inlet, forming a fluidized bed. Coal slime with a density lower than the average density of the bed will float and be discharged from the overflow outlet, while coal slime with a density higher than the average density of the bed will sink and be discharged from the tailings outlet. After adjustment by the densitometer, the classifying hydrocyclone and the valves in the tailings outlet and the additional flushing outlet work together to achieve high-precision separation at low density. The ash content of the clean coal is less contaminated by fine slime, and the ash content of the clean coal can be even lower. When the ash content of the feed is below 25%, the ash content of the clean coal after separation is comparable to or lower than that of gravity separation and flotation clean coal, and the clean coal yield is higher. In summary, this interference bed separator not only significantly improves the coal preparation accuracy and efficiency, but also demonstrates its design superiority in equipment maintenance, operational flexibility and cleaning convenience. Attached Figure Description
[0018] The preferred embodiments will now be described in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages, and implementation methods of the present invention.
[0019] Figure 1 This is a first-view structural schematic diagram of a coarse coal slime separation and interference bed separator according to the present invention; Figure 2 This is a schematic diagram of the second perspective structure of a coarse coal slime separation and interference bed separator according to the present invention; Figure 3 This is a schematic diagram of the water inlet coil structure in this invention; Figure 4 This is a schematic diagram of the annular inner wall structure in this invention; Figure 5 This is a schematic diagram of the annular groove structure in this invention; Figure 6 This is a schematic diagram of the cleaning plate and cleaning substrate structure in this invention; Figure 7 This is a schematic diagram of the substrate structure for cleaning according to the present invention; Figure 8 For the present invention Figure 7 Enlarged view of section A in the middle; Figure 9 This is a schematic diagram of the wave section structure in this invention; Figure 10 This is a schematic diagram of the wave groove structure in this invention.
[0020] In the diagram: 1. Cylinder, 101. Separation chamber, 102. Feed inlet, 103. Overflow outlet, 104. Tailings outlet, 105. Water inlet, 106. Flushing outlet, 107. Circular groove, 108. Circular inner cavity, 109. Wave section, 1010. Wave chute, 2. Grading hydrocyclone, 201. Inlet, 202. Outlet, 203. Screening channel, 3. Densitometer, 4. Valve components, 5. Feed sleeve, 501. Connecting port, 6. Connecting pipe, 7. Water inlet coil, 701. Drain outlet, 8. Rotating shaft, 801. Tooth, 9. Cleaning plate, 10. Circular inner wall, 11. Toothed ring one, 12. Gap, 13. Cleaning substrate, 1301. Toothed ring two, 14. Brush. Detailed Implementation
[0021] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation methods of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.
[0022] To keep the drawings concise, each drawing only schematically shows the parts relevant to the invention; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0023] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.
[0024] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0025] Reference Figures 1-10 As the first embodiment of the present invention, a coarse coal slime separation machine with an interference bed is proposed, comprising: a cylinder 1, the cylinder 1 having a separation chamber 101, the separation chamber 101 having a feed inlet 102, an overflow outlet 103, a tailings outlet 104 and a water inlet 105; a classifying hydrocyclone 2, the classifying hydrocyclone 2 being disposed on the cylinder 1 and located at the feed inlet 102; a densitometer 3, the densitometer 3 being disposed on the cylinder 1 and located inside the separation chamber 101; wherein, the bottom of the cylinder 1 also has a flushing outlet 106, the flushing outlet 106 being located on one side of the tailings outlet 104, and valve components 4 being disposed in both the tailings outlet 104 and the flushing outlet 106.
[0026] In this embodiment, as Figures 1-3 As shown, the separation chamber 101 inside the cylinder 1 is equipped with a precise feed inlet 102, overflow outlet 103, tailings outlet 104, and water inlet 105. This layout ensures uniform input of coal slurry and control of moisture content, as well as orderly separation of products. The density meter 3 accurately monitors the density of materials in the separation chamber, which can achieve a basically uniform bed density or separation density, realize automatic adjustment, and improve separation accuracy. At the same time, the tailings outlet 104 and the flushing outlet 106 at the bottom are equipped with valves 4. Specifically, the valves 4 are underflow valves, which can also realize automatic control and improve the desliming effect.
[0027] Furthermore, the grading hydrocyclone 2 installed at the feed inlet 102 effectively removes large particulate impurities and performs preliminary concentration, reducing the burden on subsequent sorting processes, reducing high-ash fine mud pollution, simplifying subsequent desliming and dewatering processes, reducing the ash content of clean coal after sorting, reducing the pollution of clean coal by high-ash fine mud, and improving the sorting effect.
[0028] During operation, materials such as coal slime are processed by the classifying hydrocyclone 2 and then enter the separation chamber 101 through the feed inlet 102. Water flows from bottom to top through the bottom water inlet 105, thus forming a fluidized bed. Coal slime with a density lower than the average density of the bed will float and be discharged from the overflow outlet 103, while coal slime with a density higher than the average density of the bed will sink and be discharged from the tailings outlet 104. After adjustment by the densitometer 3, the classifying hydrocyclone 2 and the valves 4 in the tailings outlet 104 and the additional flushing outlet 106 work together to achieve high-precision separation at low density. The ash content of clean coal is less contaminated by fine slime, and the ash content of clean coal can be even lower. When the ash content of the feed is below 25%, the ash content of the clean coal after separation is comparable to or lower than that of gravity separation and flotation clean coal, and the clean coal yield is higher. In summary, this interference bed separator not only significantly improves the coal preparation accuracy and efficiency, but also demonstrates its design superiority in equipment maintenance, operational flexibility, and cleaning convenience.
[0029] Furthermore, the classifying hydrocyclone 2 has an inlet 201, an outlet 202, and a screening channel 203. The outlet 202 is connected to the feed inlet 102, and the screening channel 203 is connected to the overflow outlet 103.
[0030] In this embodiment, as Figure 1 As shown, the specific defined grading hydrocyclone 2 has an inlet 201, an outlet 202, and a screening channel 203. The coal slime material is tangentially fed into the hydrocyclone at a certain speed from the inlet 201. The separated coal slime is discharged from the outlet 202 into the separation chamber 101, while the separated high-ash fine mud flows from the screening channel 203 through the overflow port 103 and is discharged. This prevents it from entering the separation system, reduces the impact of fine mud on the separation effect, and plays a role in buffering the incoming material, uniform feeding, initially reducing the ash content of the coarse coal slime, and increasing the feed concentration and processing capacity.
[0031] Furthermore, it also includes: a feed sleeve 5, which is disposed at the top of the cylinder 1 and located in the sorting chamber 101. The sorting chamber 101 and the feed sleeve 5 are interconnected. The feed sleeve 5 has a connecting port 501; and a connecting pipe 6, one end of which is connected to the connecting port 501 and the other end of which is connected to the feed inlet 102.
[0032] Furthermore, the feed sleeve 5 is cylindrical, and the top of the feed sleeve 5 has a connecting port 501, with the axis of the connecting port 501 passing through the central axis of the feed sleeve 5, and the connecting pipe 6 is arc-shaped.
[0033] In this embodiment, as Figure 1As shown, in order to ensure the rapid and stable formation of a fluidized bed and to prevent the coal slurry flowing out from the feed inlet 102 from directly impacting the upward-flowing water in a free-falling manner, which would cause the entire flow to become turbulent, a feed sleeve 5 is installed at the top of the cylinder 1. The separated coal slurry is then tangentially fed into the feed sleeve 5 through the connecting pipe 6 from the connecting port 501, and then slowly comes into contact with the incoming water in a spiral motion to stabilize and form a fluidized bed, which facilitates subsequent rapid sorting operations.
[0034] Furthermore, it also includes: a water inlet coil 7, which is installed on the inner wall of the cylinder 1, located in the sorting chamber 101, and between the density meter 3 and the tailings inlet 104. One end of the water inlet coil 7 is connected to the water inlet 105. The water inlet coil 7 has several drain outlets 701, which are arranged at equal intervals along the cross-section of the cylinder 1.
[0035] In this embodiment, as Figure 3 As shown, similarly, in order to stabilize the formation of the fluidized bed, the incoming water needs to rise steadily. Therefore, a water inlet coil 7 with several drain outlets 701 arranged at equal intervals in the cross-section of the cylinder 1 is used. After the water inlet coil 7 installed on the inner wall receives the water flow from the water inlet 105, the drain outlet 701 will drain water into the sorting chamber 101 in a more uniform manner, instead of just entering water from a fixed position, making it easier to form a stable fluidized bed.
[0036] Furthermore, the inner wall of the cylinder 1 also has an annular groove 107, which connects to the sorting chamber 101, and also includes: a plurality of rotating shafts 8, which are rotatably disposed on the inner wall of the cylinder 1, and are all located within the annular groove 107. The plurality of rotating shafts 8 are arranged around the circumference of the annular groove 107, and the axial direction of the rotating shafts 8 is parallel to the axial direction of the annular groove 107; and a cleaning plate 9, which is disposed on the rotating shafts 8.
[0037] Furthermore, after the rotating shaft 8 rotates, several cleaning plates 9 form an annular inner wall 10, and after the rotating shaft 8 rotates, the cleaning plates 9 extend into or out of the annular groove 107.
[0038] In this embodiment, as Figure 4 , 5As shown, after the interference bed separator has been working for a period of time, stubborn coal sludge usually remains on its inner wall, which needs to be cleaned in time. During cleaning, cleaning water is added to the cylinder 1. In order to further remove the coal sludge from the inner wall, an annular groove 107 is first opened on the inner wall. Several rotating shafts 8 are arranged in a circular pattern and rotated in the annular groove 107. The cleaning plates 9 follow the rotation. Thus, when the cylinder 1 is filled with cleaning water, since there is coal sludge on the inner wall of the cylinder 1 and the inner wall of the annular groove 107, the cleaning plates 9 rotate back and forth at a certain angle. On the one hand, they can stir the cleaning water back and forth. The turbulent water flow can clean up some of the coal sludge and remove it from the inner wall. On the other hand, the annular inner wall 10 formed by the rotation of several circumferentially arranged cleaning plates 9 can fill the entire annular groove 107 and have a certain blocking effect on the coal sludge in the sorting process, so that as little coal sludge as possible adheres to the annular groove 107. At the same time, the cleaning plates 9 will also have a certain collision and knocking effect on the annular groove 107 and adjacent cleaning plates 9, further improving the effect of cleaning coal sludge.
[0039] Furthermore, the cylinder 1 also has an annular inner cavity 108, and further includes: a toothed ring 11, which is rotatably mounted on the cylinder 1 and located in the annular inner cavity 108. A rotating shaft 8 passes through the annular inner cavity 108, and several rotating shafts 8 are engaged with the toothed ring 11. After the toothed ring 11 rotates, it drives the rotating shaft 8 to rotate.
[0040] In this embodiment, as Figure 6 As shown, in order to facilitate the simultaneous rotation of several circumferentially arranged rotating shafts 8, a closed annular cavity 108 is opened in the inner wall of the cylinder 1. Within this cavity, a power source such as an electric motor drives a gear ring 11 to rotate. The gear ring 11 is in the form of an internal gear ring. Since several rotating shafts 8 are located inside the gear ring 11 and all penetrate into the annular cavity 108, teeth 801 are added to one end of the rotating shaft 8 to mesh with the gear ring 11, thereby enabling the rotation of the gear ring 11 to drive the rotation of several rotating shafts 8.
[0041] Furthermore, there is a gap 12 between the rotating shaft 8 and the inner wall of the annular groove 107, and it also includes: a cleaning substrate 13, which is annular and rotatably mounted on the cylinder 1, located within the gap 12. Several rotating shafts 8 are located inside the cleaning substrate 13. The top and bottom of the cleaning substrate 13 are both equipped with toothed rings 1301, and the rotating shafts 8 are equipped with teeth 801. The toothed rings 1301 at the top and bottom of the cleaning substrate 13 mesh with the teeth 801. The rotation of the rotating shafts 8 drives the cleaning substrate 13 to rotate; and a brush 14, which is mounted on the cleaning substrate 13.
[0042] In this embodiment, as Figure 7 , 8As shown, further consideration is that some coal sludge may still remain in the annular groove 107, which is not convenient to clean. To solve this problem, the position of the rotating shaft 8 is adjusted, and a gap 12 is designed between the rotating shaft 8 and the inner wall of the annular groove 107. A cleaning substrate 13 is rotated within the gap 12, and a brush 14 is on the cleaning substrate 13. When the cleaning substrate 13 rotates, it drives the brush 14 to rotate, which can clean the coal sludge remaining in the annular groove 107 or the gap 12.
[0043] To facilitate the rotation of the cleaning substrate 13 without adding an additional power source, the same principle of the gear ring 11 is used. The upper and lower ends of the annular cleaning substrate 13 are provided with gear rings 1301. The rotating shaft 8 is equipped with teeth 801 that mesh with it. Thus, the rotation of the rotating shaft 8 can realize the reciprocating rotation of the cleaning substrate 13 within the gap 12 of the annular groove 107. The brush 14 performs the cleaning operation by reciprocating. The gear rings 1301 are set at the ends to avoid most of the parts that need to be cleaned. Most of the coal sludge remaining between the two gear rings 1301 is cleaned away, which greatly saves costs. At the same time, the gear meshing drive method is more stable. The brush 14 is soft and can perform a good cleaning effect when it reciprocates through the gap 12. It can also have a certain contact cleaning effect on the surface of the cleaning plate 9.
[0044] Furthermore, the brush 14 is radially moved along the annular groove 107 and disposed on the cleaning substrate 13. The inner wall of the annular groove 107 has a wave portion 109, and the wave portion 109 has a wave groove 1010. One end of the brush 14 is slidably disposed in the wave groove 1010. After the cleaning substrate 13 rotates, it drives the brush 14 to move radially along the annular groove 107.
[0045] In this embodiment, as Figure 9 , 10 As shown, it is necessary to remove the coal sludge from the surface of the cleaning substrate 13 because the cleaning effect caused by the reciprocating rotation of the cleaning plate 9 and other components is poor. Therefore, several spaced brushes 14 on the cleaning substrate 13 are designed to move radially along the annular groove 107, i.e., to reciprocate and extend. On the one hand, this can prevent the holes for reciprocation from being blocked by coal sludge. On the other hand, when the cleaning plate 9 rotates and makes simple contact with the surface of the cleaning substrate 13, the reciprocating and extending brushes 14 can deform, thereby better and more efficiently removing the coal sludge from both surfaces. The brushes 14 can also act on the surface of the cleaning substrate 13 and the surface of the cleaning plate 9, and work together with the turbulent water flow, thereby greatly improving the cleaning quality.
[0046] To achieve the reciprocating extension and retraction of each brush 14, the wavy portion 109 on the inner wall of the annular groove 107 is used. The end of the brush 14 is stuck in the wavy groove 1010 of the wavy portion 109, allowing the brush 14 to slide within the wavy groove 1010. When the cleaning substrate 13 rotates, causing the brush 14 to rotate axially along the annular groove 107, the brush 14 will reciprocate along the path of the wavy portion 109 in the radial direction of the annular groove 107. No elastic element is needed to provide a reset capability. It is precisely because the end of the brush 14 is stuck in the wavy groove 1010 of the wavy portion 109 using a T-shaped structure that the cleaning substrate 13 also has a certain cleaning effect on the surface of the brush 14 when the brush 14 retracts that the cleaning quality of the entire interference bed sorting machine is guaranteed.
[0047] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.
Claims
1. A teeter bed separator for coarse slime separation, characterized in that, include: The cylindrical body (1) has a sorting chamber (101), which has a feed inlet (102), an overflow outlet (103), a tailings outlet (104) and a water inlet (105). A classifying hydrocyclone (2) is disposed on the cylinder (1) and located at the feed inlet (102); Densitometer (3), the densitometer (3) is disposed on the cylinder (1) and located inside the sorting chamber (101); The bottom of the cylinder (1) is also provided with a flushing port (106), which is located on one side of the tailings port (104). Both the tailings port (104) and the flushing port (106) are provided with valve components (4). The inner wall of the cylinder (1) also has an annular groove (107), which connects to the sorting cavity (101), and further includes: A plurality of rotating shafts (8) are rotatably disposed on the inner wall of the cylinder (1), and the plurality of rotating shafts (8) are located in the annular groove (107). The plurality of rotating shafts (8) are arranged around the circumference of the annular groove (107), and the axial direction of the rotating shafts (8) is parallel to the axial direction of the annular groove (107). Cleaning plate (9), the cleaning plate (9) is disposed on the rotating shaft (8); There is a gap (12) between the rotating shaft (8) and the inner wall of the annular groove (107), and it also includes: The cleaning substrate (13) is annular and is rotatably mounted on the cylinder (1) within the gap (12). Several rotating shafts (8) are located inside the cleaning substrate (13). The top and bottom of the cleaning substrate (13) are equipped with toothed rings (1301). The rotating shafts (8) are equipped with teeth (801). The toothed rings (1301) at the top and bottom of the cleaning substrate (13) mesh with the teeth (801). The rotating shafts (8) rotate to drive the cleaning substrate (13) to rotate. A brush (14) is disposed on the cleaning substrate (13).
2. The coarse coal slime separation and interference bed separator according to claim 1, characterized in that, The grading hydrocyclone (2) has an inlet (201), an outlet (202) and a screening channel (203), the outlet (202) being connected to the feed inlet (102) and the screening channel (203) being connected to the overflow outlet (103).
3. The coarse coal slime separation and interference bed separator according to claim 1, characterized in that, Also includes: Feed sleeve (5) is disposed at the top of the cylinder (1) and located in the sorting cavity (101). The sorting cavity (101) and the feed sleeve (5) are interconnected. The feed sleeve (5) has a connecting port (501). Connecting pipe (6), one end of which is connected to the connecting port (501) and the other end is connected to the feed port (102).
4. The coarse coal slime separation and interference bed separator according to claim 3, characterized in that, The feed sleeve (5) is cylindrical, and the top of the feed sleeve (5) has the connecting port (501), and the axis of the connecting port (501) passes through the central axis of the feed sleeve (5). The connecting pipe (6) is arc-shaped.
5. The coarse coal slime separation and interference bed separator according to claim 1, characterized in that, Also includes: Water inlet coil (7) is installed on the inner wall of the cylinder (1), located in the sorting chamber (101), and between the densitometer (3) and the tailings inlet (104). One end of the water inlet coil (7) is connected to the water inlet (105). The water inlet coil (7) has several drain outlets (701), which are arranged at equal intervals along the cross-section of the cylinder (1).
6. The coarse coal slime separation and interference bed separator according to claim 1, characterized in that, After the rotating shaft (8) rotates, a plurality of cleaning plates (9) form an annular inner wall (10), and after the rotating shaft (8) rotates, the cleaning plates (9) extend into or out of the annular groove (107).
7. The coarse coal slime separation and interference bed separator according to claim 1, characterized in that, The cylinder (1) also has an annular inner cavity (108), and further includes: A toothed ring (11) is rotatably mounted on the cylinder (1) and located in the annular inner cavity (108). A rotating shaft (8) passes through the annular inner cavity (108). Several rotating shafts (8) mesh with the toothed ring (11). After the toothed ring (11) rotates, it drives the rotating shaft (8) to rotate.
8. The coarse coal slime separation and interference bed separator according to claim 1, characterized in that, The brush (14) is radially moved along the annular groove (107) and disposed on the cleaning substrate (13). The inner wall of the annular groove (107) has a wave part (109) and the wave part (109) has a wave groove (1010). One end of the brush (14) is slidably disposed in the wave groove (1010). After the cleaning substrate (13) rotates, it drives the brush (14) to move radially along the annular groove (107).