Silicon powder classification processing device

Abstract

The present invention discloses a silicon micropowder grading and processing device, comprising a base, wherein the upper middle portion of the base is provided with a feeding conical shell, a material distributing conical shell and a material lifting conical shell in end-to-end contact from top to bottom, the middle portions of the feeding conical shell, the material distributing conical shell and the material lifting conical shell are provided with an auger cylinder, and a feeding auger is rotatably installed inside the auger cylinder, a lower rotating ring which can be fixedly connected to the material lifting conical shell is installed on the circumference of the auger cylinder, and an upper rotating ring which can be fixedly connected to the material distributing conical shell is installed on the circumference of the auger cylinder, and a speed reduction component is provided between the lower rotating ring and the upper rotating ring, the present invention provides the feeding conical shell, the material distributing conical shell and the material lifting conical shell, so that the material can be evenly spread first and then lifted up at high speed, so that the material falls downward in a dispersed state, and thus during air blast grading, light and heavy particles of different sizes can be completely separated, and since the material falls downward along the conical cone, there will be no situation where the material is stacked and cannot be exposed to the wind.

Description

Technical Field

[0001] The invention relates to the technical field of micro powder classification, in particular to a silicon micro powder classification processing device. Background Art

[0002] Silicon carbide, also known as corundum, is made from quartz sand, petroleum coke, sawdust and other raw materials through high-temperature smelting in a resistance furnace. Silicon carbide also exists in nature as the rare mineral moissanite. Silicon carbide, also known as carbon silicon stone, is the most widely used and economical of contemporary non-oxide high-tech refractory raw materials such as C, N, and B. It can be called diamond grit or refractory sand. Due to its stable chemical properties, high thermal conductivity, low thermal expansion coefficient, and good wear resistance, silicon carbide is often used as an abrasive and high-grade refractory material. It is also widely used in the production of silicon carbide rods for electric heating elements.

[0003] Silicon carbide micropowder needs to be graded during the production process to facilitate subsequent utilization. For this purpose, the patent with application number CN201820748501.1 proposes an "airflow-graded silicon carbide micropowder grading device". In this application document, silicon carbide micropowder is transported by an auger, and after being vibrated by a baffle, it slides down evenly in a waterfall shape, which is convenient for subsequent airflow classification. However, the material after the auger is discharged is vibrated, and particles will be stacked, making it difficult to completely form a waterfall-like downward drop, and thus it is difficult for the material discharged from the auger to be evenly exposed to the wind, resulting in incomplete separation of large and small particles. Summary of the Invention

[0004] The purpose of the present invention is to provide a silicon micropowder grading processing device to solve the problem in the prior art that after the material is discharged from the auger, the particles will be stacked up by vibration, making it difficult to completely form a waterfall-like downward drop, and further making it difficult to make the material discharged from the auger evenly exposed to the wind, resulting in incomplete separation of large and small particles.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a silicon micropowder grading processing device, comprising a base, wherein the upper middle part of the base is provided with a feeding conical shell, a material distributing conical shell and a material lifting conical shell in end-to-end contact from top to bottom in sequence, the middle parts of the feeding conical shell, the material distributing conical shell and the material lifting conical shell are provided with an auger barrel, and the lower end of the auger barrel is fixedly connected to the upper surface of the base in an open shape, and the upper end of the auger barrel is fixedly connected to the feeding conical shell, and a feeding auger is rotatably installed inside the auger barrel, a lower rotating ring capable of being fixed to the material lifting conical shell is installed on the outer circumference of the auger barrel, and an upper rotating ring capable of being fixed to the material distributing conical shell is installed on the outer circumference of the auger barrel, a speed reduction assembly is provided between the lower rotating ring and the upper rotating ring, and a first driving assembly capable of driving the material lifting conical shell to rotate is installed inside the base;

[0006] A cylindrical portion is installed at the lower end of the material-lifting cone shell, an opening portion is opened on the circumference of the cylindrical portion, and an air blowing component capable of blowing air outwards from the opening portion is installed inside the base.

[0007] Preferably, a loading cavity is opened at a position corresponding to the auger barrel on the upper part of the interior of the base, and the lower end of the loading auger passes downward through the loading cavity. A horizontal feeding cavity is opened inside the base, and the feeding cavity is connected to the loading cavity, and a feeding auger is rotatably installed inside the feeding cavity.

[0008] Preferably, an extension box is provided on one side of the base close to the feeding auger, one end of the feeding auger is inserted into the interior of the extension box, and a raw material inlet is installed above the extension box.

[0009] Preferably, a feeding drive assembly capable of driving the loading auger and the feeding auger to rotate is provided at the lower inner part of the base, and the feeding drive assembly includes a second motor installed at the lower inner part of the base, a driving shaft laterally fixed to the power output end of the second motor, a belt transmission structure for transmitting and connecting the feeding auger and the driving shaft, a driven bevel gear fixed to the lower end of the loading auger, and a driving bevel gear fixed to the driving shaft and meshing with the driven bevel gear.

[0010] Preferably, the first drive assembly includes a large ring gear fixedly connected to the lower end of the cylindrical portion, an annular groove cooperating with the large ring gear is opened inside the base, and a first motor is installed on one side of the interior of the base, and the power output end of the first motor is fixedly connected to a driving gear meshing with the large ring gear, and an auxiliary gear is meshed on the other side of the base, and the lower surface of the large ring gear is rotatably connected to the bottom of the annular groove through a thrust bearing.

[0011] Preferably, the blower assembly includes a blower box fixed to the middle part of the upper surface of the base, a hollow chamber that can pass through the auger is provided in the middle of the blower box, and air outlets are evenly installed on the outside of the circumference of the blower box, a blower is installed on one side of the interior of the base, an air supply pipe is connected between the blower and the blower box, and the air inlet of the blower is connected to the outside.

[0012] Preferably, it also includes an outer shell installed above the base, and the material lifting conical shell, material distributing conical shell and material loading conical shell are all located inside the outer shell. A spacer ring is installed on the upper surface of the base, and the spacer ring divides the upper surface of the base into a first material cavity and a second material cavity.

[0013] Preferably, it also includes a discharge assembly, which includes a suction machine installed on one side of the base, a suction main pipe arranged at the inlet of the suction machine, two suction branches installed on the suction main pipe, an electromagnetic valve arranged on the suction branch pipe, and an annular tube fixed to one end of the suction branch pipe away from the suction main pipe, the two annular tubes are respectively located above the first material cavity and the second material cavity, and dense suction ports are installed on the lower surface of the annular tube.

[0014] Preferably, a first connecting frame is fixedly connected between the upper surface of the upper rotating ring and the material distributing conical shell, and the upper rotating ring is rotatably connected to the auger barrel through a bearing, and a second connecting frame is fixedly connected between the lower surface of the lower rotating ring and the material lifting conical shell, and the lower rotating ring is rotatably connected to the auger barrel through a bearing.

[0015] Preferably, the deceleration assembly includes: an outer surface of the lower rotating ring is provided with an external tooth portion, a lower surface of the upper rotating ring is provided with a groove, and the lower end of the upper rotating ring extends to be flush with the lower end of the lower rotating ring, the inner wall of the groove is provided with an internal tooth portion, and at least three traveling pinions are evenly meshed between the inner tooth portion and the outer tooth portion.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention is provided with a feeding cone shell, a material distribution cone shell and a lifting cone shell. After being transported to the top by the feeding auger, the material can fall down to the outer surface of the feeding cone shell, and then reach the material and then reach the material distribution cone shell. The slowly rotating material distribution cone shell can cast the material evenly and flatly. Finally, the evenly distributed material reaches the outer circumference of the high-speed rotating lifting cone shell. The high-speed rotating lifting cone shell can lift the material and make it fall downward in a dispersed state. Then, during the blast classification, the light and heavy particles can be completely separated. Since the material falls downward along the cone, the material will not be stacked and unable to be exposed to the wind.

[0018] 2. The present invention is provided with a deceleration assembly. The high speed of the high-speed rotating material lifting cone shell can be decelerated by the deceleration assembly and then transmitted to the material distributing cone shell, so that the material distributing cone shell rotates slowly, so that a single drive assembly can solve the rotation of the two at different speeds.

[0019] 3. The present invention adopts a horizontal feeding auger and a vertical loading auger to convey the materials loaded on the bottom side to the loading cone shell, so that the raw material inlet can be set at a lower position, which is convenient for loading. In addition, the feeding auger and the loading auger can use the same drive component, which reflects the principle of economy.

[0020] 4. The present invention is provided with a discharging component, which can conveniently discharge materials of different particles separately through the suction machine, which is more convenient and the discharging is thorough. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0022] Figure 1 It is an overall diagram of the present invention;

[0023] Figure 2 It is an internal cutaway view of the present invention;

[0024] Figure 3 Schematic diagram of the internal structure of the present invention;

[0025] Figure 4 Schematic diagram of the structure of the first drive assembly of the present invention;

[0026] Figure 5 This is a cross-sectional view of the material lifting cone shell of the present invention;

[0027] Figure 6 This is a sectional view of the installation of the deceleration assembly of the present invention;

[0028] Figure 7 For the present invention Figure 6 A magnified view of the layout in ;

[0029] Figure 8 A cross-sectional view of the rotating ring of the present invention;

[0030] Figure 9 This is a top view of the installation of the wind outlet of the present invention;

[0031] Figure 10 It is a structural schematic diagram of the discharge assembly of the present invention.

[0032] In the figure: 1. Base; 2. Outer shell; 3. Material lifting cone shell; 31. Cylinder; 32. Opening; 4. Material distributing cone shell; 5. Material feeding cone shell; 6. Material feeding auger; 7. Auger tube; 8. Blower assembly; 81. Blower box; 811. Hollow chamber; 82. Air outlet; 83. Air supply pipe; 84. Blower; 9. First drive assembly; 91. Big gear ring; 92. Driving gear; 93. First motor; 94. Auxiliary gear; 95. Thrust bearing; 10. Discharge assembly; 101. Suction machine; 102. Suction main pipe; 103. Solenoid valve; 104. Suction branch pipe; 1 05. Annular tube; 106. Suction port; 11. Spacer ring; 12. First material chamber; 13. Second material chamber; 14. Raw material inlet; 15. Feeding auger; 16. Feeding chamber; 17. Loading chamber; 18. Feeding drive assembly; 181. Second motor; 182. Driving bevel gear; 183. Driven bevel gear; 184. Driving shaft; 185. Belt drive structure; 19. Lower rotating ring; 20. First connecting frame; 21. Upper rotating ring; 22. Speed ​​reduction assembly; 221. External gear; 222. Travel pinion; 223. Internal gear; 23. Second connecting frame; 24. Extension box. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] See also Figure 1 、 Figure 2 and Figure 3 As shown, in the embodiment of the present invention, a silicon micropowder grading processing device includes a base 1, an auger barrel 7 is fixedly connected to the middle part of the upper surface of the base 1, and the lower end of the auger barrel 7 is open, and a feeding auger 6 is rotatably installed inside the auger barrel 7, and then when the feeding auger 6 rotates, it can transport the material at the bottom upward, and a feeding cavity 17 is opened at a position corresponding to the auger barrel 7 above the interior of the base 1, and the lower end of the feeding auger 6 passes downward through the feeding cavity 17, and a transverse feeding cavity 16 is opened inside the base 1, and the feeding cavity 16 is connected to the feeding cavity 17, and a feeding auger 15 is rotatably installed inside the feeding cavity 16, and the external material can be transported laterally to the lower end of the feeding auger 6 by the rotation of the feeding auger 15, so that the feeding auger 6 can push the material upward;

[0035] Continue to refer to Figure 1 、 Figure 2 and Figure 3An extension box 24 is provided on one side of the base 1 near the feeding auger 15. One end of the feeding auger 15 is inserted into the extension box 24. A raw material inlet 14 is installed above the extension box 24. The raw material is fed through the raw material inlet 14 and transported horizontally by the feeding auger 15 until it reaches the bottom of the loading auger 6.

[0036] like Figure 2 The feeding auger 15 is driven by the driving shaft 184 and the driving shaft 184 is connected to the driving shaft 183 of the feeding auger 15, thereby driving the feeding auger 15 to rotate.

[0037] Combine Figure 2 and Figure 5 As shown, a shell 2 is installed above the base 1, and a feeding cone shell 5, a material distribution cone shell 4 and a lifting cone shell 3 are arranged in sequence from top to bottom in the upper middle part of the base 1. The lifting cone shell 3, the material distribution cone shell 4 and the feeding cone shell 5 are all located inside the shell 2. The auger cylinder 7 here is located in the middle of the bottom feeding cone shell 5, the material distribution cone shell 4 and the lifting cone shell 3, and the upper end of the auger cylinder 7 is fixedly connected to the feeding cone shell 5. After the feeding auger 6 pushes the material upward, the material reaches the top At the end, the material may fall downward due to the action of gravity, and the material may first reach the feeding frustum shell 5. Since the material reaching the feeding frustum shell 5 is not uniform, when the material reaches the material leveling frustum shell 4, the material leveling frustum shell 4 rotates slowly, so that the material can be evenly spread on the material leveling frustum shell 4. In order to further make the material rise, so as to separate the materials of different sizes, the high-speed rotating material raising frustum shell 3 can lift the material and increase the gap between each particle, so as to facilitate the classification process.

[0038] Combine Figure 2 and Figure 4As shown, in order to facilitate the high-speed rotation of the material-lifting cone shell 3, a first driving assembly 9 capable of driving the material-lifting cone shell 3 to rotate is installed inside the base 1. The preferred first driving assembly 9 includes a large gear ring 91 fixed to the lower end of the cylindrical portion 31, and an annular groove that cooperates with the large gear ring 91 is opened inside the base 1. A first motor 93 is installed on one side of the interior of the base 1. The power output end of the first motor 93 is fixedly connected to a driving gear 92 that meshes with the large gear ring 91, and an auxiliary gear 94 is meshed on the other side of the base 1. When the motor 93 is working, it can drive the driving gear 92 to rotate. The rotation of the driving gear 92 can drive the large ring gear 91 to rotate. The auxiliary gear 94 can assist the large ring gear 91 to rotate more stably. When the large ring gear 91 rotates, it can drive the lifting cone shell 3 to rotate, so as to facilitate its high-speed rotation (here it is necessary to debug the speed of the first motor 93 to avoid the situation where the lifting cone shell 3 is excessively lifted due to the high speed of the first motor 93. The speed of the lifting cone shell 3 only needs to lift the material until it is separated from the outer surface of the lifting cone shell 3);

[0039] like Figure 4 Preferably, the lower surface of the large gear ring 91 is rotatably connected to the bottom of the annular groove through a thrust bearing 95 to reduce the wear between the bottom surface of the large gear ring 91 and the bottom surface of the annular groove. A bearing can also be installed on the inner wall of the large gear ring 91 to reduce the wear between it and the inner wall of the annular groove. In order to prevent the large gear ring 91 from falling off from the base 1 during rotation, a T-shaped limit slider (not shown in the figure) can be further provided at the bottom of the large gear ring 91 to limit its falling off.

[0040] Reference Figure 3 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8 The lifting ring 3 is connected to the lifting ring 3 and the lifting ring 3 is connected to the lifting ring 3.

[0041] Continue to refer to Figure 3 、 Figure 5、 Figure 6 、 Figure 7 and Figure 8 Furthermore, in this embodiment, the deceleration assembly 22 includes: an outer surface of the lower rotating ring 19 is provided with an outer tooth portion 221, a lower surface of the upper rotating ring 21 is provided with a groove, and the lower end of the upper rotating ring 21 extends to be flush with the lower end of the lower rotating ring 19, and the inner wall of the groove is provided with an inner tooth portion 223, and at least three traveling pinions 222 are evenly meshed between the inner tooth portion 223 and the outer tooth portion 221, that is, when the lower rotating ring 19 rotates, the outer tooth portion 221 cooperates with the inner tooth portion 223 to drive the traveling pinion 222 to rotate while rotating, and its revolution can drive the upper rotating ring 21 to rotate at a reduced speed, so as to facilitate the upper rotating ring 21 to drive the material-leveling cone shell 4 to rotate slowly to perform the material-leveling operation;

[0042] like Figure 2 The hopper 32 is provided with an air blasting assembly 8 which can blow air outwards from the opening 32, and the hopper 32 is provided with an air blasting assembly 8 which can blow air outwards from the opening 32 when the hopper 3 is working. The hopper 32 is provided with an air blasting assembly 8 which can blow air outwards from the opening 32, and the hopper 32 is provided with an air blasting assembly 8 which can blow air outwards from the opening 32, so that the hopper 3 can blow air outwards to the hopper 3 so that the hopper 3 can blow air outwards.

[0043] Combine Figure 2 、 Figure 5 and Figure 9 As shown, further, in this embodiment, the blast assembly 8 preferably includes a blast box 81 fixed to the middle of the upper surface of the base 1, and a hollow chamber 811 is provided in the middle of the blast box 81, which can pass through the auger 7, and air outlet heads 82 are evenly installed on the outer circumference of the blast box 81. A blower 84 is installed on one side of the interior of the base 1, and an air supply pipe 83 is connected between the blower 84 and the blast box 81, and the air inlet of the blower 84 is connected to the outside, that is, when the blower 84 is working, the outside air can be sent into the interior of the blast box 81 through the air supply pipe 83, and then the air is sent to the material to be classified through the air outlet head 82;

[0044] Combine Figure 2 and Figure 10As shown, after the grading is completed, in order to more conveniently discharge the graded materials, a discharging assembly 10 is provided here, which includes a suction machine 101 installed on one side of the base 1, a suction main pipe 102 provided at the inlet of the suction machine 101, two suction branches 104 installed on the suction main pipe 102, a solenoid valve 103 provided on the suction branch pipe 104, and an annular pipe 105 fixed to one end of the suction branch pipe 104 away from the suction main pipe 102. The two annular pipes 105 are respectively located above the first material chamber 12 and the second material chamber 13. , and the lower surface of the annular tube 105 is equipped with dense suction ports 106, that is, when the suction machine 101 is working, the material can be sucked into the inside of the annular tube 105 through the suction port 106, and then reach the inside of the suction branch pipe 104, and then reach the inside of the suction main pipe 102, and finally be discharged from the discharge port of the suction machine 101. Here, the solenoid valves 103 are respectively installed on the two suction branches 104 to discharge the two materials after classification separately, that is, when one of the solenoid valves 103 is opened, the other solenoid valve 103 is closed, so as to realize the separate discharge of the two materials.

[0045] The working principle and use process of the present invention are as follows: When using this device, the raw material is fed into the feeding cavity 16 from the raw material inlet 14, and the second motor 181 drives the driving shaft 184 to rotate, and then the feeding auger 15 can work to transport the material to the left due to the action of the belt transmission structure 185, until it reaches the bottom of the feeding auger 6. At the same time, the driving shaft 184 can also drive the driving bevel gear 182 to rotate, and then drive the driven bevel gear 183 to rotate, and finally realize the feeding auger 6 to work, pushing the material below it upward until the material reaches the top and falls off downward to the surface of the feeding cone shell 5. The material then reaches the slowly rotating material-leveling cone shell 4, which spreads the material evenly, and then the evenly distributed material reaches the outer circumference of the high-speed rotating material-raising cone shell 3, which can lift the material (when the first motor 93 is working, it can drive the driving gear 92 to rotate, and the driving gear 92 can drive the large gear ring 91 to rotate, and the auxiliary gear 94 can assist the large gear ring 91 to rotate more stably, and when the large gear ring 91 rotates, it can drive the material-raising cone shell 3 to rotate, which is convenient for its high-speed rotation. When the material-raising cone shell 3 rotates, it can drive the lower rotating ring 1 9 rotates, and when the lower rotating ring 19 rotates, the outer tooth portion 221 cooperates with the inner tooth portion 223 to drive the traveling pinion 222 to rotate while rotating, and its revolution can drive the upper rotating ring 21 to rotate at a reduced speed, so as to facilitate the upper rotating ring 21 to drive the material-leveling frustum shell 4 to rotate slowly to perform the material-leveling operation). After the material is lifted up, it falls downward in a dispersed manner. During the falling process, the blower 84 can send the outside air into the interior of the blower box 81 through the air supply pipe 83, and then blow the air flow to the dispersed material falling downward through the air outlet 82. After receiving the air flow, the light small particles have a large stroke, and the heavy particles have a large stroke. The light and small particles fall into the second material chamber 13, and the heavy particles fall into the first material chamber 12, and finally the material classification is realized. After the classification is completed, by closing one of the solenoid valves 103 and opening the other solenoid valve 103, the suction machine 101 is driven to work, and the corresponding material can be sucked into the interior of the annular tube 105 through the suction port 106, and then reach the interior of the suction branch pipe 104, and then reach the interior of the suction main pipe 102, and finally discharged from the discharge port of the suction machine 101, and then the opening and closing of the two solenoid valves 103 are exchanged to discharge the other part of the material, so as to realize the separate discharge of two materials.

[0046] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A silicon micropowder classification processing device, comprising a base (1), characterized in that: The upper middle part of the base (1) is provided with a feeding cone shell (5), a material distribution cone shell (4) and a lifting cone shell (3) in order from top to bottom. The feeding cone shell (5), the material distribution cone shell (4) and the lifting cone shell (3) are provided with an auger cylinder (7) in the middle part. The lower end of the auger cylinder (7) is fixed to the upper surface of the base (1) in an open shape. The upper end of the auger cylinder (7) is fixed to the feeding cone shell (5). The auger cylinder (7) is rotatably installed inside. A feeding auger (6) is provided, a lower rotating ring (19) capable of being fixedly connected to a material lifting cone shell (3) is installed on the outer circumference of the auger cylinder (7), and an upper rotating ring (21) capable of being fixedly connected to a material leveling cone shell (4) is installed on the outer circumference of the auger cylinder (7), a speed reduction assembly (22) is provided between the lower rotating ring (19) and the upper rotating ring (21), and a first driving assembly (9) capable of driving the material lifting cone shell (3) to rotate is installed inside the base (1); A cylindrical portion (31) is installed at the lower end of the material lifting cone shell (3), an opening portion (32) is opened on the circumference of the cylindrical portion (31), and a blast assembly (8) capable of blasting air outward from the opening portion (32) is installed inside the base (1); A first connecting frame (20) is fixedly connected between the upper surface of the upper rotating ring (21) and the material-distributing conical shell (4), and the upper rotating ring (21) is rotatably connected to the auger cylinder (7) through a bearing, and a second connecting frame (23) is fixedly connected between the lower surface of the lower rotating ring (19) and the material-lifting conical shell (3), and the lower rotating ring (19) is rotatably connected to the auger cylinder (7) through a bearing; the speed reduction assembly (22) comprises: an outer surface of the lower rotating ring (19) is provided with an outer tooth portion (221), a lower surface of the upper rotating ring (21) is provided with a groove, and the lower end of the upper rotating ring (21) extends to be flush with the lower end of the lower rotating ring (19), the inner wall of the groove is provided with an inner tooth portion (223), and at least three traveling pinions (222) are evenly meshed between the inner tooth portion (223) and the outer tooth portion (221).

2. A silicon powder classification processing device according to claim 1, characterized in that: A loading chamber (17) is provided at a position corresponding to the auger tube (7) inside the base (1), and the lower end of the loading auger (6) passes downward through the loading chamber (17). A transverse feeding chamber (16) is provided inside the base (1), and the feeding chamber (16) is connected to the loading chamber (17). A feeding auger (15) is rotatably installed inside the feeding chamber (16).

3. A silicon powder classification processing device according to claim 2, characterized in that: An extension box (24) is provided on one side of the base (1) close to the feeding auger (15), one end of the feeding auger (15) is inserted into the extension box (24), and a raw material inlet (14) is installed above the extension box (24).

4. A silicon powder classification processing device according to claim 3, characterized in that: A feeding drive assembly (18) capable of driving the loading auger (6) and the feeding auger (15) to rotate is provided at the lower part of the base (1), and the feeding drive assembly (18) comprises a second motor (181) installed at the lower part of the base (1), a driving shaft (184) laterally fixed to the power output end of the second motor (181), a belt transmission structure (185) for connecting the feeding auger (15) and the driving shaft (184), a driven bevel gear (183) fixed to the lower end of the loading auger (6), and a driving bevel gear (182) fixed to the driving shaft (184) and meshing with the driven bevel gear (183).

5. The silicon micropowder classification processing device according to claim 1, characterized in that: The first drive assembly (9) includes a large gear ring (91) fixedly connected to the lower end of the cylindrical portion (31); an annular groove cooperating with the large gear ring (91) is provided inside the base (1); a first motor (93) is installed on one side of the base (1); a driving gear (92) meshing with the large gear ring (91) is fixedly connected to the power output end of the first motor (93); an auxiliary gear (94) is meshed with the other side of the base (1); and the lower surface of the large gear ring (91) is rotatably connected to the bottom of the annular groove through a thrust bearing (95).

6. The silicon micropowder classification processing device according to claim 1, characterized in that: The blower assembly (8) includes a blower box (81) fixed to the middle of the upper surface of the base (1), a hollow chamber (811) capable of passing the auger cylinder (7) is provided in the middle of the blower box (81), and air outlets (82) are evenly installed on the outer circumference of the blower box (81), a blower (84) is installed on one side of the interior of the base (1), an air supply pipe (83) is connected between the blower (84) and the blower box (81), and the air inlet of the blower (84) is connected to the outside.

7. The silicon micropowder classification processing device according to claim 1, characterized in that: The invention also includes a shell (2) installed above the base (1), wherein the material lifting cone shell (3), the material distributing cone shell (4) and the material loading cone shell (5) are all located inside the shell (2), and a spacer ring (11) is installed on the upper surface of the base (1), and the spacer ring (11) divides the upper surface of the base (1) into a first material cavity (12) and a second material cavity (13).

8. The silicon micropowder classification processing device according to claim 7, characterized in that: The invention also includes a discharge assembly (10), wherein the discharge assembly (10) includes a suction machine (101) installed on one side of the base (1), a suction main pipe (102) arranged at the inlet of the suction machine (101), two suction branches (104) installed on the suction main pipe (102), a solenoid valve (103) arranged on the suction branch pipe (104), and an annular pipe (105) fixed to one end of the suction branch pipe (104) away from the suction main pipe (102), wherein the two annular pipes (105) are respectively located above the first material cavity (12) and the second material cavity (13), and the lower surface of the annular pipe (105) is provided with dense suction ports (106).

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