A silicon micropowder screening device with dust removal function

Abstract

The present invention is applicable to the technical field of silicon micropowder screening, and provides a silicon micropowder screening device with a dust removal function, comprising: a base, an adjusting plate and a box assembly, the box assembly comprising a secondary box, a control box and a primary box which are sequentially installed on the adjusting plate; a filter plate slidably installed in the primary box, and a lifting assembly for driving the filter plate to slide is also provided in the control box; a stirring assembly, the stirring assembly is rotatably installed in the box assembly; a pneumatic assembly, the pneumatic assembly is arranged in the control box, and the pneumatic assembly is also connected to the stirring assembly; and a dust exhaust assembly located in the dust removal pipe, the dust exhaust assembly and the stirring assembly are connected through an intermittent assembly. The present invention avoids the problem that the existing silicon micropowder screening devices with dust removal function are generally more traditional and have a simple screening structure, resulting in poor screening effect and affecting the processing quality of the silicon micropowder through the coordinated arrangement of the lifting assembly, the stirring assembly and the dust exhaust assembly.

Description

Technical Field

[0001] The invention relates to the technical field of silicon micropowder screening, in particular to a silicon micropowder screening device with a dust removal function. Background Art

[0002] Silica powder generally refers to quartz powder. Quartz powder is made of pure quartz (natural quartz or fused quartz) through multiple processes such as crushing, sorting, cleaning, acid treatment, high-temperature melting, medium crushing, fine grinding, grading and iron removal. It is a powder that meets the use requirements. Its appearance is white powder, non-toxic, odorless and pollution-free. Silica powder has good temperature resistance, acid and alkali corrosion resistance, high thermal conductivity, high insulation, low expansion, stable chemical properties and high hardness. It is widely used in chemical, electronic, electrical, plastic, rubber and national defense fields.

[0003] During the use of silicon micropowder, the required particle size is also different. The silicon micropowder needs to be screened to extract the required particles. The existing silicon micropowder screening devices with dust removal function are generally more traditional, with a simple screening structure, resulting in poor screening effect and affecting the processing quality of silicon micropowder. Therefore, in view of the above situation, it is urgent to provide a silicon micropowder screening device with dust removal function to overcome the shortcomings in current practical applications. Summary of the invention

[0004] The object of the present invention is to provide a silicon micropowder screening device with a dust removal function, aiming to solve the problems in the above-mentioned background technology.

[0005] The present invention is implemented as follows: a silicon micropowder screening device with dust removal function, comprising:

[0006] A base, an adjustment plate and a box assembly, wherein a vertical plate is also arranged on the base, one end of the adjustment plate is rotatably mounted on the vertical plate, and a hydraulic cylinder for driving the adjustment plate to rotate on the vertical plate is also arranged on the end of the base away from the vertical plate, and the box assembly comprises a secondary box, a control box and a primary box which are sequentially mounted on the adjustment plate, and discharge holes are provided on the secondary box and the primary box, and a sealing plate is detachably mounted on the discharge hole, and a feed pipe and a dust removal pipe are also arranged on the primary box, and a sealing cover is provided on the feed pipe;

[0007] A filter plate is slidably mounted in the primary box, and a lifting assembly for driving the filter plate to slide is also provided in the control box;

[0008] A stirring assembly for stirring the material on the filter plate, wherein the stirring assembly is rotatably installed in the box assembly;

[0009] A pneumatic assembly for driving the lifting assembly to work, wherein the pneumatic assembly is arranged in the control box and is also connected to the stirring assembly;

[0010] And a dust exhaust component is located in the dust removal pipe, and the dust exhaust component is connected to the stirring component through an intermittent component.

[0011] As a further solution of the present invention: the stirring assembly comprises:

[0012] A second rotating tube, wherein the second rotating tube is rotatably mounted in the control box, and an end of the second rotating tube away from the primary box extends into the secondary box;

[0013] A plugging tube, which is fixedly mounted on the filter plate and rotatably cooperates with the second rotating tube, and one end of the plugging tube away from the filter plate extends into the secondary box, and a material guide hole is also provided on the plugging tube;

[0014] A driving member for driving the second rotating tube to rotate, wherein the driving member is arranged in the secondary box;

[0015] A first rotating tube, wherein the first rotating tube is rotatably installed in the secondary box, and one end of the first rotating tube away from the adjusting plate extends into the blocking tube, the first rotating tube can block the material guide hole, and the first rotating tube is connected to the first rotating tube through a linkage frame;

[0016] A rotating shaft, wherein the rotating shaft is rotatably mounted on the filter plate through a supporting frame, and an end of the rotating shaft is slidably connected to the first rotating tube, and the rotating shaft can rotate along with the first rotating tube;

[0017] And a stirring frame fixedly installed on the rotating shaft, wherein the stirring frame is provided in multiple groups.

[0018] As a further solution of the present invention: the driving member includes a motor and a transmission member, the motor is fixedly installed in the control box, and the transmission member is used for connecting the output shaft of the motor and the second rotating tube; wherein the transmission member adopts a combination structure of a pulley and a transmission belt.

[0019] As a further solution of the present invention: the stirring frame includes three cross bars and one inclined bar, the three cross bars are fixedly mounted on the rotating shaft, the inclined bar is fixedly mounted on the three cross bars, and the inclined bar contacts the side wall of the filter plate.

[0020] As a further solution of the present invention: the linkage frame is an L-shaped structure.

[0021] As a further solution of the present invention: the lifting assembly comprises:

[0022] A push rod, wherein the push rod is slidably mounted on the primary box, and one end of the push rod is fixedly connected to the filter plate;

[0023] A lifting ring is connected to the pneumatic component, and the lifting ring is slidably matched with the ejector rod.

[0024] As a further solution of the present invention: the pneumatic component comprises:

[0025] A pneumatic box, wherein the pneumatic box is rotatably mounted in the control box, and a second gas cavity and a first gas cavity are provided in the pneumatic box, and the second gas cavity is connected to the first gas cavity through an air guide hole;

[0026] A second piston plate, wherein the second piston plate is slidably mounted in the second gas chamber, and the second piston plate is connected to the lifting ring via a push rod;

[0027] a first piston plate slidably mounted in the first gas chamber;

[0028] A push tube, the push tube is fixedly mounted on the second rotating tube, and a telescopic rod is slidably mounted on the push tube, and one end of the telescopic rod away from the push tube is fixedly connected to the first piston plate;

[0029] A driving block, wherein the driving block is slidably mounted in the first gas chamber and is fixedly connected to the telescopic rod;

[0030] And a spring sleeved on the push tube, one end of the spring is fixedly connected to the second rotating tube, and the other end of the spring is fixedly connected to the driving block.

[0031] As a further solution of the present invention: the dust exhaust component comprises:

[0032] A support shaft, the support shaft being rotatably mounted in the primary box;

[0033] The fan blades are located in the dust removal pipe, and the fan blades are fixedly mounted on the support shaft, and one end of the support shaft away from the fan blades is connected to the intermittent component.

[0034] As a further solution of the present invention: the intermittent component includes a driven block and an active block, the driven block is fixedly mounted on the support shaft, and has multiple groups of protrusions, the active block is fixedly mounted on the rotating shaft, and has multiple groups of recessed portions for accommodating the protrusions.

[0035] Compared with the prior art, the invention has the following beneficial effects: the material is introduced into the primary box through the feed pipe, the material entering the primary box will fall on the filter plate, the material is filtered through the filter plate, and the material filtered by the filter plate will fall into the cavity at the bottom of the primary box, the stirring component can improve the filtering effect by stirring the material on the filter plate, and at the same time, the stirring component drives the pneumatic component to work, so that the lifting component drives the filter plate to move back and forth in the vertical direction, which can drive the material on the filter plate to shake, further improving the screening effect, and the dust in the primary box can be discharged through the dust removal pipe through the dust removal component, wherein the dust removal pipe can be connected to the external dust collecting structure, and the dust collecting structure can adopt the existing public technology, and the hydraulic cylinder drives the adjustment plate to rotate on the vertical plate, so that the box body assembly is tilted to one side of the vertical plate, so as to facilitate the discharge of the screened material in the primary box; through the coordinated arrangement of the filter plate, the lifting assembly, the stirring assembly, the pneumatic assembly and the dust removal assembly, the existing silicon micropowder screening device with dust removal function is generally more traditional, the screening structure is simple, resulting in poor screening effect, affecting the processing quality of silicon micropowder. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 A schematic diagram of the three-dimensional structure of a silicon micropowder screening device with dust removal function provided in an embodiment of the present invention.

[0037] Figure 2 for Figure 3 Rear view cross-sectional structural diagram of .

[0038] Figure 3 A schematic cross-sectional structure diagram of a pneumatic component in a silicon micropowder screening device with a dust removal function provided in an embodiment of the present invention.

[0039] Figure 4 A partial structural schematic diagram of a stirring assembly in a silicon micropowder screening device with a dust removal function provided in an embodiment of the present invention.

[0040] Figure 5 for Figure 2 Schematic diagram of the enlarged structure at point A in the middle.

[0041] Figure 6 for Figure 4 Schematic diagram of the enlarged structure at point B in the middle.

[0042] In the accompanying drawings: 1-base, 2-adjusting plate, 3-sealing plate, 4-vertical plate, 5-secondary box, 6-control box, 7-primary box, 8-feeding pipe, 9-dust removal pipe, 10-top rod, 11-filter plate, 12-support frame, 13-stirring frame, 14-rotating shaft, 15-sealing pipe, 16-first rotating pipe, 17-pneumatic box, 18-motor, 19-transmission part, 20-linkage frame, 21-push rod, 22-lifting ring, 23-push pipe, 24-spring, 25-driving block, 26-second piston plate, 27-air guide hole, 28-first piston plate, 29-telescopic rod, 30-first gas chamber, 31-second gas chamber, 32-second rotating pipe, 33-driven block, 34-support shaft, 35-fan blade, 36-active block, 37-material guide hole. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention. The specific implementation of the present invention is described in detail below in combination with specific embodiments.

[0044] See also Figure 1-Figure 6 , an embodiment of the present invention provides a silicon micropowder screening device with a dust removal function, the silicon micropowder screening device with a dust removal function comprises:

[0045] A base 1, an adjustment plate 2 and a box assembly, wherein the base 1 is further provided with a vertical plate 4, one end of the adjustment plate 2 is rotatably mounted on the vertical plate 4, and a hydraulic cylinder for driving the adjustment plate 2 to rotate on the vertical plate 4 is further provided on the end of the base 1 away from the vertical plate 4, and the box assembly comprises a secondary box 5, a control box 6 and a primary box 7 which are sequentially mounted on the adjustment plate 2, the secondary box 5 and the primary box 7 are both provided with a discharge hole, and a sealing plate 3 is detachably mounted on the discharge hole, the primary box 7 is further provided with a feed pipe 8 and a dust removal pipe 9, and the feed pipe 8 is equipped with a sealing cover;

[0046] A filter plate 11 is slidably mounted in the primary box 7, and a lifting assembly for driving the filter plate 11 to slide is also provided in the control box 6;

[0047] A stirring assembly for stirring the material on the filter plate 11, wherein the stirring assembly is rotatably installed in the box assembly;

[0048] A pneumatic assembly for driving the lifting assembly to work, wherein the pneumatic assembly is arranged in the control box 6 and is also connected to the stirring assembly;

[0049] And a dust exhaust component is located in the dust removal pipe 9, and the dust exhaust component is connected to the stirring component through an intermittent component.

[0050] In the embodiment of the present invention, the discharge hole and the vertical plate 4 are located on the same side; when in use, the material is introduced into the primary box 7 through the feed pipe 8, and the material entering the primary box 7 will fall on the filter plate 11, and the material will be filtered by the filter plate 11. The material filtered by the filter plate 11 will fall into the cavity at the bottom of the primary box 7, and the stirring component can improve the filtering effect by stirring the material on the filter plate 11. At the same time, the stirring component drives the pneumatic component to work, so that the lifting component drives the filter plate 11 to move back and forth in the vertical direction, which can drive the material on the filter plate 11 to shake, thereby further improving the screening effect. The dust removal component can discharge the dust in the primary box 7 through the dust removal pipe 9, wherein the dust removal pipe 9 can be connected to an external dust collecting structure, and the dust collecting structure can adopt the existing public technology, and the hydraulic cylinder drives the adjustment plate 2 to rotate on the vertical plate 4, so that the box body component is tilted to the side of the vertical plate 4, so as to facilitate the discharge of the screened material in the primary box 7; compared with the prior art, the present invention avoids the problem that the existing silicon micropowder screening device with dust removal function is generally more traditional and has a simple screening structure, resulting in poor screening effect and affecting the processing quality of silicon micropowder through the coordinated arrangement of the filter plate 11, the lifting assembly, the stirring assembly, the pneumatic assembly and the dust removal assembly.

[0051] In one embodiment of the present invention, see Figure 2 , Figure 4 and Figure 6 , the stirring assembly comprises:

[0052] A second rotating tube 32, wherein the second rotating tube 32 is rotatably mounted in the control box 6, and one end of the second rotating tube 32 away from the primary box 7 extends into the secondary box 5;

[0053] The plugging tube 15 is fixedly mounted on the filter plate 11, and the plugging tube 15 is rotatably matched with the second rotating tube 32, and one end of the plugging tube 15 away from the filter plate 11 extends into the secondary box 5, and the plugging tube 15 is also provided with a material guide hole 37;

[0054] A driving member for driving the second rotating tube 32 to rotate, wherein the driving member is arranged in the secondary box 5;

[0055] The first rotating tube 16 is rotatably installed in the secondary box 5, and one end of the first rotating tube 16 away from the adjustment plate 2 extends into the blocking tube 15. The first rotating tube 16 can block the material guide hole 37. The first rotating tube 16 is connected to the first rotating tube 32 through the linkage frame 20;

[0056] A rotating shaft 14, wherein the rotating shaft 14 is rotatably mounted on the filter plate 11 through the support frame 12, and an end of the rotating shaft 14 is slidably connected to the first rotating tube 16, and the rotating shaft 14 can rotate along with the first rotating tube 16;

[0057] and a stirring frame 13 fixedly mounted on the rotating shaft 14, wherein the stirring frame 13 is provided in multiple groups;

[0058] The driving member includes a motor 18 and a transmission member 19. The motor 18 is fixedly installed in the control box 6. The transmission member 19 is used to connect the output shaft of the motor 18 with the second rotating tube 32. The transmission member 19 adopts a combination structure of a pulley and a transmission belt.

[0059] The stirring frame 13 includes three cross bars and one inclined bar, the three cross bars are fixedly mounted on the rotating shaft 14, the inclined bar is fixedly mounted on the three cross bars, and the inclined bar is in contact with the side wall of the filter plate 11;

[0060] The linkage frame 20 is an L-shaped structure.

[0061] In this embodiment, the motor 18 can drive the second rotating tube 32 to rotate by cooperating with the transmission member 19, and can realize the synchronous rotation of the first rotating tube 16 and the second rotating tube 32 by cooperating with the linkage frame 20. The first rotating tube 16 can drive the stirring frame 13 to rotate in the filter plate 11 by driving the rotating shaft 14 to rotate, thereby realizing the stirring process of the material on the filter plate 11, which can improve the screening efficiency.

[0062] In one embodiment of the present invention, see Figure 2 and Figure 3 , the lifting assembly comprises:

[0063] A push rod 10, wherein the push rod 10 is slidably mounted on the primary box 7, and one end of the push rod 10 is fixedly connected to the filter plate 11;

[0064] A lifting ring 22, wherein the lifting ring 22 is connected to the pneumatic assembly and the lifting ring 22 is slidably matched with the ejector rod 10;

[0065] The pneumatic assembly comprises:

[0066] A pneumatic box 17, wherein the pneumatic box 17 is rotatably mounted in the control box 6, and a second gas chamber 31 and a first gas chamber 30 are provided in the pneumatic box 17, and the second gas chamber 31 is connected to the first gas chamber 30 through an air guide hole 27;

[0067] A second piston plate 26, wherein the second piston plate 26 is slidably mounted in the second gas chamber 31, and the second piston plate 26 is connected to the lifting ring 22 via a push rod 21;

[0068] A first piston plate 28 slidably mounted in the first gas chamber 30;

[0069] A push tube 23, wherein the push tube 23 is fixedly mounted on the second rotating tube 32, and a telescopic rod 29 is slidably mounted on the push tube 23, and one end of the telescopic rod 29 away from the push tube 23 is fixedly connected to the first piston plate 28;

[0070] A driving block 25, wherein the driving block 25 is slidably mounted in the first gas chamber 30, and the driving block 25 is fixedly connected to the telescopic rod 29;

[0071] And a spring 24 sleeved on the push tube 23 , one end of the spring 24 is fixedly connected to the second rotating tube 32 , and the other end of the spring 24 is fixedly connected to the driving block 25 .

[0072] In this embodiment, the lifting ring 22 is provided with a guide groove connected to the push rod 10; the second rotating tube 32 drives the push tube 23 to rotate, so that the driving block 25 drives the telescopic rod 29 and the first piston plate 28 to move toward the second gas chamber 31 under the action of centrifugal force. By adjusting the rotation speed of the second rotating tube 32, the displacement distance of the driving block 25 can be controlled. At a low rotation speed, the spring 24 will pull the driving block 25 to reset, and the first piston plate 28 pushes the gas in the first gas chamber 30 into the second gas chamber 31 through the air guide hole 27 by moving toward the second gas chamber 31, thereby pushing the second piston plate 26 and the push rod 21 to move toward the primary box 7, and then pushing the lifting ring 22, the push rod 10 and the filter plate 11 to move upward. When the rotation speed of the second rotating tube 32 is continuously adjusted, the driving block 25 will reciprocate in the horizontal direction, thereby realizing the reciprocating movement of the filter plate 11 in the vertical direction. The reciprocating filter plate 11 will drive the material to shake, thereby improving the screening effect;

[0073] During the movement of the filter plate 11, the blocking tube 15 can be driven to move. When the filter plate 11 moves to the highest point, the first rotating tube 16 is separated from the material guide hole 37, so that the material that has not passed the screening on the filter plate 11 can be introduced into the blocking tube 15 through the material guide hole 37, and then introduced into the secondary box 5 through the blocking tube 15, thereby realizing the discharge function.

[0074] In one embodiment of the present invention, see Figure 2 and Figure 5 , the dust exhaust component comprises:

[0075] A support shaft 34, wherein the support shaft 34 is rotatably mounted in the primary box 7;

[0076] The fan blade 35 is located in the dust removal pipe 9, and the fan blade 35 is fixedly mounted on the support shaft 34, and the end of the support shaft 34 away from the fan blade 35 is connected to the intermittent component;

[0077] The intermittent assembly includes a driven block 33 and an active block 36. The driven block 33 is fixedly mounted on the support shaft 34 and has a plurality of protrusions. The active block 36 is fixedly mounted on the rotating shaft 14 and has a plurality of recesses for accommodating the protrusions.

[0078] In this embodiment, when the filter plate 11 moves to the highest point, the active block 36 can be engaged with the driven block 33, so that the support shaft 34 can rotate along with the rotating shaft 14, thereby driving the fan blades 35 to rotate, so as to facilitate the discharge of dust in the box assembly during the discharge process; during the screening process, the active block 36 will not contact the driven block 33, so as to prevent the airflow generated by the rotation of the fan blades 35 from carrying out the material.

[0079] To sum up, the working principle of the present invention is as follows: when in use, the material is introduced into the primary box 7 through the feed pipe 8, and the material entering the primary box 7 will fall on the filter plate 11, and the material will be filtered by the filter plate 11. The material filtered by the filter plate 11 will fall into the cavity at the bottom of the primary box 7, and the stirring component can improve the filtering effect by stirring the material on the filter plate 11. At the same time, the stirring component drives the pneumatic component to work, so that the lifting component drives the filter plate 11 to reciprocate in the vertical direction, which can drive the material on the filter plate 11 to shake, thereby further improving the screening effect. The dust in the primary box 7 can be discharged through the dust removal pipe 9 through the dust removal component, wherein the dust removal pipe 9 can be connected to an external dust collecting structure, and the dust collecting structure can adopt the existing public technology, and the hydraulic cylinder drives the adjusting plate 2 to rotate on the vertical plate 4, so that the box body assembly is tilted to one side of the vertical plate 4, so as to facilitate the discharge of the screened material in the primary box 7.

[0080] In the present invention, unless otherwise clearly specified and limited, the terms "slide", "rotate", "fix", "have" and the like should be understood in a broad sense, for example, it can be a welding connection, a bolt connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0081] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A silicon micropowder screening device with dust removal function, comprising a base, an adjustment plate and a box assembly, wherein a vertical plate is further arranged on the base, one end of the adjustment plate is rotatably mounted on the vertical plate, and a hydraulic cylinder for driving the adjustment plate to rotate on the vertical plate is further arranged on the end of the base away from the vertical plate, wherein the box assembly comprises a secondary box, a control box and a primary box which are sequentially mounted on the adjustment plate, wherein discharge holes are provided on the secondary box and the primary box, and a sealing plate is detachably mounted on the discharge hole, wherein a feed pipe and a dust removal pipe are further arranged on the primary box, and a sealing cover is provided on the feed pipe, wherein: Also includes: A filter plate is slidably mounted in the primary box, and a lifting assembly for driving the filter plate to slide is also provided in the control box; A stirring assembly for stirring the material on the filter plate, wherein the stirring assembly is rotatably installed in the box assembly; A pneumatic component for driving the lifting component to work, wherein the pneumatic component is arranged in the control box and is also connected to the stirring component; and a dust removal component located in the dust removal pipe, wherein the dust removal component is connected to the stirring component via an intermittent component; The stirring assembly comprises: A second rotating tube, wherein the second rotating tube is rotatably mounted in the control box, and an end of the second rotating tube away from the primary box extends into the secondary box; A plugging tube, which is fixedly mounted on the filter plate and rotatably cooperates with the second rotating tube, and one end of the plugging tube away from the filter plate extends into the secondary box, and a material guide hole is also provided on the plugging tube; A driving member for driving the second rotating tube to rotate, wherein the driving member is arranged in the secondary box; A first rotating tube, wherein the first rotating tube is rotatably installed in the secondary box, and one end of the first rotating tube away from the adjusting plate extends into the blocking tube, the first rotating tube can block the material guide hole, and the first rotating tube is connected to the first rotating tube through a linkage frame; A rotating shaft, wherein the rotating shaft is rotatably mounted on the filter plate through a supporting frame, and an end of the rotating shaft is slidably connected to the first rotating tube, and the rotating shaft can rotate along with the first rotating tube; and a stirring frame fixedly mounted on the rotating shaft, wherein the stirring frame is provided in multiple groups; The lifting assembly comprises: A push rod, wherein the push rod is slidably mounted on the primary box, and one end of the push rod is fixedly connected to the filter plate; A lifting ring, the lifting ring is connected to the pneumatic assembly, and the lifting ring and the ejector rod are slidably matched; The pneumatic assembly comprises: A pneumatic box, wherein the pneumatic box is rotatably mounted in the control box, and a second gas cavity and a first gas cavity are provided in the pneumatic box, and the second gas cavity is connected to the first gas cavity through an air guide hole; A second piston plate, wherein the second piston plate is slidably mounted in the second gas chamber, and the second piston plate is connected to the lifting ring via a push rod; a first piston plate slidably mounted in the first gas chamber; A push tube, the push tube is fixedly mounted on the second rotating tube, and a telescopic rod is slidably mounted on the push tube, and one end of the telescopic rod away from the push tube is fixedly connected to the first piston plate; A driving block, wherein the driving block is slidably mounted in the first gas chamber and is fixedly connected to the telescopic rod; and a spring sleeved on the push tube, wherein one end of the spring is fixedly connected to the second rotating tube, and the other end of the spring is fixedly connected to the driving block; The dust removal component comprises: A support shaft, the support shaft being rotatably mounted in the primary box; The fan blade is located in the dust removal pipe, and the fan blade is fixedly mounted on the support shaft, and the end of the support shaft away from the fan blade is connected to the intermittent component; The intermittent assembly includes a driven block and an active block. The driven block is fixedly mounted on the support shaft and has multiple groups of protrusions. The active block is fixedly mounted on the rotating shaft and has multiple groups of recesses for accommodating the protrusions.

2. The silicon micropowder screening device with dust removal function according to claim 1, characterized in that: The driving member includes a motor and a transmission member, wherein the motor is fixedly installed in the control box, and the transmission member is used for connecting the output shaft of the motor with the second rotating tube; wherein the transmission member adopts a combination structure of a pulley and a transmission belt.

3. The silicon powder screening device with dust removal function according to claim 1, characterized in that: The stirring frame comprises three cross bars and one oblique bar, the three cross bars are all fixedly mounted on the rotating shaft, the oblique bar is fixedly mounted on the three cross bars, and the oblique bar contacts the side wall of the filter plate.

4. The silicon powder screening device with dust removal function according to claim 1, characterized in that: The linkage frame is an L-shaped structure.

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