Blast furnace slag micro-powder compound vortex ultrafine separator

Abstract

The present application relates to the field of powder material classification, especially to a blast furnace slag powder compound vortex superfine sorting machine, which can avoid dust accumulation and ensure the powder sorting effect, comprising: a fixed frame, a sorting barrel is arranged on the inner side of the fixed frame, an air inlet bend is arranged in the middle of the sorting barrel; an air outlet barrel is arranged on the top of the sorting barrel; a feeding pipe is arranged on the top of the air outlet barrel, and the lower end of the feeding pipe extends into the sorting barrel through the air outlet barrel. The device avoids dust accumulation in the sorting barrel by setting vertical airflow and using a sorting wheel to filter the material, and through the synergistic effect of the pressure sensor, the controller and other components, when the powder in the airflow is precipitated due to high concentration and gravity, the material feed for air selection is limited and the airflow strength is ensured unchanged, so that the device can fully air select and classify the material and the separated powder, and ensure the sorting effect.

Description

Technical Field

[0001] This invention relates to the field of powder material classification, and more particularly to a blast furnace slag micro powder compound eddy current ultrafine separator. Background Technology

[0002] Blast furnace slag is a solid waste formed during the blast furnace metal smelting process from gangue in ore, ash in fuel, and non-volatile components in solvent. It can replace natural stone in highways, airports, foundation engineering, railway ballast, concrete aggregate, and asphalt pavement. In particular, waste blast furnace slag can be made into micro powder and directly mixed into cement instead of cement clinker, or used as a fine aggregate component in concrete. It can serve as an important means of resource utilization of solid waste, environmental pollution control, energy conservation, and cost reduction.

[0003] To achieve the desired effect, granulated blast furnace slag needs to be dried and ground to a certain fineness before it can be used as a raw material additive. Currently, micro powder separators are commonly used to screen slag micro powder.

[0004] The micro powder separator mainly uses a fan to create negative pressure in the separator chamber. Air enters the separator through the air inlet and forms a rotating airflow under the drive of the high-speed cage rotor. The fine particles entering the separator chamber from the feed inlet are subjected to a greater airflow drag force than centrifugal force, thus passing through the rotor blades and moving towards the center of the rotor. The suction force of the fan is used to make the fine particles fall into the fine powder collector.

[0005] However, when the concentration of powder in the material to be sorted is high per unit time, a large amount of powder is carried by the airflow as the air is blown. Some of the powder in the airflow settles out due to gravity and gradually accumulates at the bottom of the air classifier, especially near the side wall, forming dust accumulation. This not only fails to achieve the desired sorting effect, but also causes a large amount of dust to seriously encroach on and block the airflow channel, disrupt the airflow field, and reduce the air classification performance.

[0006] Therefore, it is necessary to design a blast furnace slag micro powder compound vortex ultrafine separator that can avoid dust accumulation during powder selection and ensure the powder selection effect. Summary of the Invention

[0007] To overcome the drawback that when the powder concentration of the input material to be separated is high, some powder in the airflow will settle out due to gravity and gradually accumulate at the bottom of the classifier chamber, especially near the side wall, forming ash, the technical problem is to provide a blast furnace slag micro powder duplex vortex ultrafine classifier that can avoid ash accumulation during powder selection and ensure the powder selection effect.

[0008] The technical solution of this invention is: a blast furnace slag micronized powder compound vortex ultrafine separator, comprising: a fixed frame and a sorting barrel, the sorting barrel being provided inside the fixed frame, and an air inlet bend being provided in the middle of the sorting barrel; an exhaust duct being provided at the top of the sorting barrel; a feed pipe being provided at the top of the exhaust duct, the lower end of the feed pipe extending through the exhaust duct into the sorting barrel; a flow guide ring being provided at the lower part of the inner side of the sorting barrel; an air separation component being provided between the sorting barrel and the exhaust duct to assist in the sorting of slag micronized powder; a discharge mechanism being provided at the bottom of the sorting barrel to facilitate sealing of the bottom of the sorting barrel and automatically discharge the screened material; and a flow limiting mechanism being provided on the sorting wheel to limit the flow of feed and screening.

[0009] Furthermore, the air separation assembly includes a first motor, which is located at the top of the inner side of the feed pipe; a rotating shaft, which is rotatably located inside the feed pipe and connected to the output shaft of the first motor via a coupling; a first gear, which is located at the bottom of the rotating shaft and has a rotating disk; a support, which is located inside the sorting barrel; a second gear, which has two horizontally symmetrical second gears at the top of the support and meshes with the first gear; a sorting wheel, which is rotatably located outside the rotating disk at the bottom of the rotating shaft, with four evenly spaced arc-shaped through holes at the bottom of the sorting wheel and a gear ring at the bottom of the sorting wheel that meshes with the second gear; and a windmill, which is located at the top of the inner side of the sorting barrel, with the bottom of the windmill connected to the top of the sorting wheel, and the feed pipe passing through the middle of the windmill and rotatably connected to the windmill.

[0010] Furthermore, the flow limiting mechanism includes: a first electric push rod, which is provided at the lower outer side of the feed pipe; an extension tube, which is slidably provided at the lower inner side of the feed pipe and connected to the telescopic rod of the first electric push rod; an arc-shaped baffle, which is slidably provided at even intervals at the lower part of the sorting wheel, and the four arc-shaped baffles respectively cover the four arc-shaped through holes of the sorting wheel; a second electric push rod, which is provided on both sides of the four arc-shaped baffles at the bottom of the sorting wheel, and the telescopic rod of the second electric push rod is connected to the arc-shaped baffle; and a pressure sensor, which is embedded in the top of the rotating disk of the rotating shaft.

[0011] Furthermore, the collection mechanism includes: a conical filter screen, with a conical filter screen provided inside the sorting barrel; eight fixed seats, evenly spaced at the center of the inner side of the sorting barrel; a rotating plate, with a rotating plate rotatably mounted on each fixed seat, and the eight rotating plates can be combined to form an annular plate; a transmission ring, slidably mounted in the center of the inner side of the sorting barrel, located below the rotating plate, and with eight arc-shaped grooves on the transmission ring; a top plate, with eight square grooves evenly spaced below the transmission ring in the center of the inner side of the sorting barrel, and a top plate slidably mounted within the square grooves, one end of the top plate contacting the bottom of the rotating plate, and a fixed post at the top of the top plate, the fixed post of the top plate slidingly engaging with the arc-shaped grooves of the transmission ring; a third motor, with a third motor located in the center of the outer side of the sorting barrel; and a third gear, with the output shaft of the third motor passing through the side wall of the sorting barrel, the output shaft of the third motor connected to the third gear via a coupling, and the transmission ring having multiple protruding teeth on the side near the third gear, the transmission ring meshing with the third gear through the protruding teeth.

[0012] Furthermore, the discharge mechanism includes: a housing, which is provided at the bottom of the sorting barrel; a discharge impeller, which is rotatably provided inside the housing; and a second motor, which is provided on the outside of the housing, with the output shaft of the second motor connected to the discharge impeller via a coupling.

[0013] Furthermore, it also includes: a material collection bin, which is located inside the sorting bin and directly below the material distribution wheel, with the discharge end of the material collection bin penetrating the side wall of the sorting bin; a filter screen, which is located at the bottom of the material collection bin; and a sealing plate, which is slidably installed inside the discharge end of the material collection bin.

[0014] Furthermore, it also includes: a first push plate, with multiple first push plates provided on the outer wall of the feed pipe, the first push plates contacting the bottom inner side of the impeller; and a second push plate, with multiple second push plates provided on the top of the impeller, the second push plates sliding in contact with the inside of the exhaust duct.

[0015] Furthermore, the top of the rotating disk of the rotating shaft is provided with multiple protrusions at even intervals.

[0016] The present invention has the following advantages: 1. In this device, by setting up vertical airflow classification and using a sorting wheel to filter the material, dust accumulation in the sorting barrel is avoided. At the same time, through the coordinated action of pressure sensor, controller and other components, when the powder in the airflow settles and precipitates due to gravity due to high concentration, the feed of the material to be classified is restricted and the airflow intensity is kept constant. In this way, the device can fully classify the material and the separated powder by air classification, ensuring the sorting effect.

[0017] 2. When powder settles out due to gravity in the airflow due to high concentration, a rotating plate is used to collect the settled powder to prevent the sorted powder from mixing with large particles again. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a cross-sectional view of the first partial three-dimensional structure of the present invention.

[0020] Figure 3 This is a cross-sectional view of the second partial three-dimensional structure of the present invention.

[0021] Figure 4 This is a partial three-dimensional structural schematic diagram of the present invention.

[0022] Figure 5 This is a three-dimensional cross-sectional view of the flow limiting mechanism of the present invention.

[0023] Figure 6 This is a schematic diagram of the first partial three-dimensional structure of the current limiting mechanism of the present invention.

[0024] Figure 7 This is a schematic diagram of the second part of the flow limiting mechanism of the present invention.

[0025] Figure 8 This is a partial three-dimensional structural diagram of the collecting mechanism of the present invention.

[0026] Figure 9 This is a partial three-dimensional cross-sectional view of the collecting mechanism of the present invention.

[0027] Figure 10 This is a three-dimensional cross-sectional view of the material discharge mechanism of the present invention.

[0028] Figure 11 This is a three-dimensional structural diagram of the material collection bucket, filter screen, and sealing plate of the present invention.

[0029] Figure 12 This is a three-dimensional structural diagram of the impeller, the first pusher plate, and the second pusher plate of the present invention.

[0030] Figure 13 This is a three-dimensional structural diagram of the sorting barrel, discharge impeller, and outer shell of the present invention.

[0031] In the attached drawings: 1_fixed frame, 2_sorting barrel, 3_exhaust barrel, 4_feed pipe, 5_air separation assembly, 501_first motor, 6_rotating shaft, 601_first gear, 602_support, 603_second gear, 7_sorting wheel, 8_impeller, 9_draining ring, 10_discharge mechanism, 1001_outer shell, 1002_discharge impeller, 1003_second motor, 11_flow limiting mechanism, 1101_first electric push rod, 1102 _Extension tube, 1103_Arc-shaped baffle, 1104_Second electric push rod, 1105_Pressure sensor, 12_Collection mechanism, 1201_Conical filter screen, 1202_Fixed base, 1203_Rotating plate, 1204_Transmission ring, 1205_Top plate, 1206_Third motor, 1207_Third gear, 13_Collection bucket, 14_Filter screen, 15_Sealing plate, 16_First push plate, 17_Second push plate, 18_Protruding rod. Detailed Implementation

[0032] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0033] Example 1

[0034] like Figures 1 to 7 As shown, a blast furnace slag micronized powder compound vortex ultrafine separator specifically includes a fixed frame 1, a sorting barrel 2, an exhaust duct 3, a feed pipe 4, a flow guiding ring 9, an air separation component 5, a discharge mechanism 10, and a flow limiting mechanism 11. The sorting barrel 2 is located inside the fixed frame 1, and an air inlet bend is provided in the middle of the sorting barrel 2. An exhaust duct 3 is provided at the top of the sorting barrel 2 and communicates with it. The feed pipe 4 is located at the top of the exhaust duct 3, and the lower end of the feed pipe 4 extends through the exhaust duct 3 and into the sorting barrel 2. The lower inner side of the sorting barrel 2 is provided with a conical flow guide ring 9. The flow guide ring 9, together with the sorting barrel 2 and the air inlet bend of the sorting barrel 2, forms a cavity with a gap at the lower part of the flow guide ring 9. An air separation component 5 for assisting in the sorting of slag powder is provided between the sorting barrel 2 and the exhaust barrel 3. The bottom of the sorting barrel 2 is provided with a discharge mechanism 10 for convenient sealing of the bottom of the sorting barrel 2 and automatic discharge of screened material. The sorting wheel 7 is provided with a flow limiting mechanism 11 for limiting the flow of feed and screening.

[0035] The air separation assembly 5 includes a first motor 501, a rotating shaft 6, a first gear 601, a bracket 602, a second gear 603, a sorting wheel 7, and a fan wheel 8. The first motor 501 is located at the top inner side of the feed pipe 4, and the rotating shaft 6 is rotatably mounted inside the feed pipe 4. The upper end of the rotating shaft 6 is connected to the output shaft of the first motor 501 via a coupling. A rotating disk is located at the lower end of the rotating shaft 6, and the first gear 601 is located at the bottom of the rotating disk. The bracket 602 is bolted inside the sorting barrel 2. Two second gears 603 are symmetrically rotated at the top of the 602. The second gears 603 mesh with the first gear 601. A sorting wheel 7 is rotatably mounted on the outer side of the rotating disk at the bottom of the rotating shaft 6. Four arc-shaped through holes are evenly spaced at the bottom of the sorting wheel 7. A toothed ring with teeth facing inward is mounted at the bottom of the sorting wheel 7. The toothed ring meshes with the second gear 603. A rotating impeller 8 is mounted on the top of the inner side of the sorting barrel 2. The bottom of the impeller 8 is connected to the top of the sorting wheel 7. The feed pipe 4 passes through the middle of the impeller 8 and is rotatably connected to the impeller 8.

[0036] The flow limiting mechanism 11 includes a first electric push rod 1101, an extension tube 1102, an arc-shaped baffle 1103, a second electric push rod 1104, and a pressure sensor 1105. The first electric push rod 1101 is vertically downward-facing and connected to the lower outer side of the feed pipe 4 by bolts. The extension tube 1102 is slidably provided on the lower inner side of the feed pipe 4. The extension tube 1102 is connected to the telescopic rod of the first electric push rod 1101. Four arc-shaped baffles 1103 are slidably provided at even intervals on the lower part of the sorting wheel 7. The four arc-shaped baffles 1103 respectively cover and block the four arc-shaped through holes of the sorting wheel 7. The second electric push rod 1104 is horizontally oriented on both sides of the four arc-shaped baffles 1103 at the bottom of the sorting wheel 7. The telescopic rods of the second electric push rods 1104 are all connected to the arc-shaped baffles 1103. The pressure sensor 1105 is embedded in the top of the rotating disk of the rotating shaft 6.

[0037] In operation, first connect an air pump to the air inlet bend at the bottom of the sorting barrel 2, then start the first motor 501. The first motor 501 drives the sorting wheel 7 and the impeller 8 to rotate via the rotating shaft 6, the first gear 601, and the second gear 603. Under the combined action of the air inlet bend and the impeller, the airflow enters the sorting barrel 2. Due to the obstruction of the guide ring 9, the airflow can only enter the sorting barrel 2 through the gap between the guide ring 9 and the sorting barrel 2. Furthermore, due to the high-speed rotation of the impeller, a negative pressure zone is formed at its bottom, causing the airflow to have partial velocities in both the axial and circumferential directions, forming a spiraling upward air column. Subsequently, the material to be air-sorted is fed into the feed pipe 4 from the top. The material falls directly onto the top of the rotating disk of the rotating shaft 6. As the rotating shaft 6 drives the rotating disk to rotate continuously, the material is subjected to centrifugal force. Under the action of the air column, the particles are thrown against the side wall of the sorting wheel 7, achieving the effect of filtering and classifying particles. Then, under the action of the air column, small particles that can be blown up by the air column are carried by the air column through the impeller 8 and the exhaust hopper 3 and collected. The larger materials fall out of the sorting wheel 7 through the arc-shaped through hole and are finally collected by the discharge device of the discharge mechanism 10. This straight up and down structure can largely avoid dust accumulation in the sorting hopper 2. At the same time, the pressure sensor 1105 on the rotating disk monitors the weight of the material to be air-sorted entering the device. When the powder content of the material to be air-sorted entering the device is high, with the airflow and rotation, the material with high powder content is more easily carried away from the interior of the sorting wheel 7. The pressure sensor 1105 receives the weight of the material. The pressure signal changes significantly. When the change exceeds a certain value per unit time, the controller electrically connected to the pressure sensor 1105 can control the changes of the first electric push rod 1101 and the second electric push rod 1104. The telescopic rod of the first electric push rod 1101 is initially retracted, but extends under the action of the controller, causing the extension tube 1102 to move downwards towards the rotating disk of the rotating shaft 6. This reduces the material feeding space from the feed pipe 4 to the sorting wheel 7, thus reducing the material feeding amount. The telescopic rod of the second electric push rod 1104 is initially extended, but retracts under the action of the controller. The arc-shaped baffle 1103 moves towards the center of the sorting wheel 7 under the action of the second electric push rod 1104, eventually completely blocking the sorting wheel 7. The arc-shaped through-hole prevents large particles from being discharged from the sorting wheel 7, causing them to gradually accumulate inside. The material accumulating below the feed pipe 4 blocks new material from entering the sorting wheel 7 through the feed pipe 4. Thus, under the action of the first electric push rod 1101, the second electric push rod 1104, and other components, the amount of material to be air-separated is limited. After the airflow blows away the fine powder that meets the specifications, when the pressure change monitored by the pressure sensor 1105 is much smaller than the preset value, the controller controls the first electric push rod 1101 and the second electric push rod 1104 to return to their initial state. The material in the sorting wheel 7 then re-enters the sorting barrel 2 along the arc-shaped through-hole. The device repeats the steps, achieving fully automated operation and ensuring the air-separation effect of the material.

[0038] Example 2

[0039] like Figure 8 and Figure 9 As shown, based on Embodiment 1, the collection mechanism 12 includes a tangible filter screen, a fixed base 1202, a rotating plate 1203, a transmission ring 1204, a top plate 1205, a third motor 1206, and a third gear 1207. A conical filter screen 1201 is bolted to the inner side of the sorting barrel 2. An annular protrusion is located in the center of the inner side of the sorting barrel 2. Eight fixed bases 1202 are evenly spaced at the bottom of the annular protrusion. Each fixed base 1202 has a rotating arc-shaped plate 1203. The eight arc-shaped rotating plates 1203 can be combined to form an annular plate. A transmission ring 1204 is slidably located in the center of the inner side of the sorting barrel 2. The transmission ring 1204 is located below the rotating plate 1203 and has a... Eight arc-shaped slids are provided. Eight square slids are evenly spaced on the lower side of the transmission ring 1204 in the middle of the inner side of the sorting barrel 2. A top plate 1205 is slidably installed in the square slids. One end of the top plate 1205 contacts the bottom of the rotating plate 1203. A fixed column is provided on the top of the top plate 1205. The fixed column of the top plate 1205 is slidably engaged with the arc-shaped slids of the transmission ring 1204. A third motor 1206 is provided in the middle of the outer side of the sorting barrel 2. The output shaft of the third motor 1206 passes through the side wall of the sorting barrel 2. The output shaft of the third motor 1206 is connected to a third gear 1207 through a coupling. The transmission ring 1204 has multiple protruding teeth on the side near the third gear 1207. The transmission ring 1204 meshes with the third gear 1207 through the protruding teeth.

[0040] Initially, the rotating plate 1203 is vertically downward under the influence of gravity. When the material to be air-sorted entering the device has a high powder content, the controller activates the first electric push rod 1101 and the second electric push rod 1104 simultaneously. At the same time, the controller controls the third motor 1206 to rotate. The third motor 1206 drives the third gear 1207 to rotate a certain distance, which in turn drives the transmission ring 1204 to rotate a certain distance. The rotating ring 1204, through its rotating push rod arc-shaped groove, causes the top plate 1205 to gradually approach and lift the rotating plate 1203, ultimately raising the rotating plate 1203. When the 203 is lifted to a horizontal position, the eight rotating plates 1203 are combined into a ring. When the pressure sensor 1105 detects a large change in pressure, and the controller completes the process of reducing the amount of material to be air-sorted, a considerable portion of the material with a high powder content will still enter. Some of the powder will settle out due to gravity due to its high concentration. The rotating plates 1203 that are lifted can collect this part of the material. At the same time, the conical filter screen 1201 prevents large particles from mixing with it. When the concentration of fine powder in the airflow is low, it can be blown away by the airflow again.

[0041] like Figure 10 and Figure 13As shown, based on Embodiment 1, the discharge mechanism 10 includes a housing 1001, a discharge impeller 1002, and a second motor 1003. The bottom of the sorting barrel 2 is provided with the housing 1001, the discharge impeller 1002 is rotatably provided inside the housing 1001, and the second motor 1003 is provided on the outside of the housing 1001 by means of bolt connection. The output shaft of the second motor 1003 is connected to the discharge impeller 1002 through a coupling.

[0042] The third motor 1206 of the discharge mechanism 10 operates independently. During the operation of the device, the third motor 1206 drives the discharge impeller 1002 to rotate slowly. The discharge impeller 1002 and the outer shell 1001 form a closed space. The material that has been air-separated will enter from the top of the outer shell 1001 and then be discharged from the device as the discharge impeller 1002 rotates. This not only seals the bottom of the sorting barrel 2 to prevent the airflow from being discharged downward, but also controls the discharge amount by controlling the rotation speed of the discharge impeller 1002 and the distance between the blades.

[0043] like Figure 2 and Figure 11 As shown, based on Embodiment 1, it further includes a material collection bin 13, a filter screen 14, and a sealing plate 15. The material collection bin 13 is provided inside the sorting bin 2. The material collection bin 13 is located directly below the material distribution wheel. The discharge end of the material collection bin 13 penetrates through the side wall of the sorting bin 2. The bottom of the material collection bin 13 is provided with a filter screen 14. The discharge end of the material collection bin 13 is slidably provided with a sealing plate 15 inside.

[0044] The material collection bucket 13 and the sealing plate 15 can form a closed shell 1001 and provide a filter screen 14 to perform secondary filtration and collection of materials from the sorting wheel 7. In addition, when powder settles out due to high concentration, it can reduce the degree of mixing between large particles and powder.

[0045] like Figure 12 and Figure 13 As shown, based on embodiment 1, it further includes a first push plate 16 and a second push plate 17. Multiple first push plates 16 are provided on the outer wall of the feed pipe 4. The first push plates 16 are in contact with the bottom inner side of the impeller 8. Multiple second push plates 17 are provided on the top of the impeller 8. The second push plates 17 are in sliding contact with the inside of the exhaust duct 3.

[0046] When the impeller 8 rotates, the second push plate 17 can be driven to rotate, scraping and pushing out the accumulated dust inside the exhaust duct 3, so that the airflow can carry it away. The first push plate 16 is fixed on the feed pipe 4. When the impeller 8 rotates and the feed pipe 4 does not move, the accumulated dust at the bottom inside the impeller 8 will also be scraped, so that the airflow can carry it away.

[0047] like Figure 6 As shown, the top of the rotating disk of the rotating shaft 6 is provided with a plurality of protrusions 18 evenly spaced.

[0048] The protruding rod 18 can increase the unevenness of the upper surface of the rotating disk of the rotating shaft 6, increase the friction between the rotating disk and the material to be air-sorted, and make it easier for the rotating disk to drive the material to rotate.

[0049] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A blast furnace slag micro-powder compound eddy current ultrafine separator, characterized in that, include: A fixed frame (1) and a sorting barrel (2) are provided inside the fixed frame (1), and an air inlet bend is provided in the middle of the sorting barrel (2). The top of the sorting bin (2) is equipped with an exhaust duct (3); The feed pipe (4) is provided at the top of the exhaust pipe (3), and the lower end of the feed pipe (4) extends through the exhaust pipe (3) into the sorting barrel (2); A conical drainage ring (9) is provided on the lower inner side of the sorting barrel (2). Air classifier (5): An air classifier (5) is provided between the sorting barrel (2) and the exhaust barrel (3) to assist in the sorting of slag powder. The bottom of the sorting barrel (2) is provided with a discharge mechanism (10) that facilitates sealing the bottom of the sorting barrel (2) and automatically discharges the screened material. The flow limiting mechanism (11) is provided on the sorting wheel (7) to limit the flow of feed and screening. The wind separation component (5) includes: The first motor (501) is provided on the top of the inner side of the feed pipe (4); Rotating shaft (6), the inner side of the feed pipe (4) is provided with rotating shaft (6), and the rotating shaft (6) is connected to the output shaft of the first motor (501) through a coupling; The first gear (601) is provided at the lower end of the rotating shaft (6), and the first gear (601) is provided at the bottom of the rotating shaft (6). The bracket (602) is provided inside the sorting barrel (2); the second gear (603) is provided horizontally and symmetrically on the top of the bracket (602), and the second gear (603) meshes with the first gear (601); The sorting wheel (7) is rotatably provided on the outer side of the rotating disk at the bottom of the rotating shaft (6). The bottom of the sorting wheel (7) is provided with four arc-shaped through holes evenly spaced. The bottom of the sorting wheel (7) is provided with a toothed ring, which meshes with the second gear (603). The impeller (8) is located on the top of the inner side of the sorting barrel (2). The bottom of the impeller (8) is connected to the top of the sorting wheel (7). The feed pipe (4) passes through the middle of the impeller (8) and is rotatably connected to the impeller (8).

2. The blast furnace slag micro powder compound eddy current ultrafine separator according to claim 1, characterized in that, The flow limiting mechanism (11) includes: The first electric push rod (1101) is provided on the lower part of the outer side of the feed pipe (4). An extension tube (1102) is slidably provided on the lower inner side of the feed tube (4), and the extension tube (1102) is connected to the telescopic rod of the first electric push rod (1101); Arc-shaped baffles (1103): Four arc-shaped baffles (1103) are evenly spaced and slidably provided at the bottom of the sorting wheel (7). The four arc-shaped baffles (1103) cover the four arc-shaped through holes of the sorting wheel (7) respectively. The second electric push rod (1104) is provided on both sides of the four arc-shaped baffles (1103) at the bottom of the sorting wheel (7). The telescopic rods of the second electric push rod (1104) are connected to the arc-shaped baffles (1103). Pressure sensor (1105) is embedded in the top of the rotating disk of the rotating shaft (6).

3. The blast furnace slag micro powder compound eddy current ultrafine separator according to claim 2, characterized in that, It also includes a collection mechanism, said collection mechanism (12) comprising: Conical filter screen (1201), a conical filter screen (1201) is provided on the inner side of the sorting barrel (2); Fixed seat (1202), eight fixed seats (1202) are evenly spaced in the middle of the inner side of the sorting barrel (2); Rotating plates (1203) are rotatably provided on both the rotating plate (1203) and the fixed base (1202). Eight rotating plates (1203) can be combined to form a ring plate. The transmission ring (1204) is slidably provided in the middle of the inner side of the sorting barrel (2). The transmission ring (1204) is located below the rotating plate (1203). The transmission ring (1204) is provided with eight arc-shaped grooves. The top plate (1205) has eight square grooves evenly spaced on the lower side of the transmission ring (1204) in the middle of the inner side of the sorting barrel (2). The top plate (1205) is slidably installed in the square grooves. One end of the top plate (1205) is in contact with the bottom of the rotating plate (1203). The top of the top plate (1205) is provided with a fixed column. The fixed column of the top plate (1205) is slidably engaged with the arc-shaped groove of the transmission ring (1204). The third motor (1206) is provided in the middle of the outer side of the sorting barrel (2). The output shaft of the third gear (1207) and the third motor (1206) pass through the side wall of the sorting barrel (2). The output shaft of the third motor (1206) is connected to the third gear (1207) through a coupling. The transmission ring (1204) has multiple protruding teeth on the side near the third gear (1207). The transmission ring (1204) meshes with the third gear (1207) through the protruding teeth.

4. The blast furnace slag micro powder compound eddy current ultrafine separator according to claim 3, characterized in that, The discharge mechanism (10) includes: The bottom of the sorting barrel (2) is provided with a shell (1001); The discharge impeller (1002) is rotatably installed inside the outer casing (1001). The second motor (1003) is located on the outside of the housing (1001). The output shaft of the second motor (1003) is connected to the discharge impeller (1002) through a coupling.

5. A blast furnace slag micro-powder compound eddy current ultrafine separator according to claim 4, characterized in that, Also includes: The material collection bin (13) is provided inside the sorting bin (2). The material collection bin (13) is located directly below the sorting wheel (7). The discharge end of the material collection bin (13) passes through the side wall of the sorting bin (2). A filter screen (14) is provided at the bottom of the material collection bucket (13). A sealing plate (15) is slidably provided inside the discharge end of the material collection tank (13).

6. A blast furnace slag micro-powder compound eddy current ultrafine separator according to claim 5, characterized in that, Also includes: First push plate (16), multiple first push plates (16) are provided on the outer wall of the feed pipe (4), and the first push plate (16) contacts the bottom of the inner side of the impeller (8); The second push plate (17) is provided on the top of the wind turbine (8). The second push plate (17) slides in contact with the inside of the exhaust duct (3).

7. A blast furnace slag micro-powder compound eddy current ultrafine separator according to claim 6, characterized in that, The rotating shaft (6) has multiple protrusions (18) evenly spaced on the top of the rotating disk.

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