A drying device and method for anti-agglomerated ultrafine high-purity spherical silicon powder

Abstract

The application relates to the technical field of silicon powder processing, in particular to a drying device and method for anti-agglomerated superfine high-purity spherical silicon powder, which comprises a drying chamber, a partition plate, a drying module, an opening and closing module and a material collecting module. The internal space of the drying chamber is divided into an upper bin body and a lower bin body by the partition plate. A through hole for passing materials is arranged in the middle part of the partition plate. The drying module is arranged in the upper bin body in a relative rotation mode. The opening and closing module is movably arranged in the upper bin body, and the opening and closing module is provided with two first opening and closing frames and two second opening and closing frames which can control the opening and closing and the opening and closing size of the through hole. The material scattering module is arranged in the upper bin body in an inclined state. The material collecting module is vertically arranged in the lower bin body. The application can efficiently dry the silicon powder and effectively avoid the agglomeration of the silicon powder, and the drying efficiency is high and the effect is good.

Description

Technical Field

[0001] This invention relates to the field of silicon micropowder processing technology, specifically to a drying apparatus and method for anti-agglomeration ultrafine high-purity spherical silicon micropowder. Background Technology

[0002] Ultrafine, high-purity spherical silicon powder has wide applications in electronic packaging, semiconductor manufacturing, and high-performance coatings due to its excellent physicochemical properties. However, because of its small particle size and large specific surface area, ultrafine, high-purity spherical silicon powder is prone to agglomeration during storage and transportation, leading to reduced flowability and poor dispersibility, which in turn affects subsequent processing and product performance. Therefore, effectively preventing agglomeration of ultrafine, high-purity spherical silicon powder during drying and ensuring its uniform dispersion and high purity has become a key research issue in this field.

[0003] In existing technologies, hot air drying, spray drying, or fluidized bed drying are commonly used to process silicon micropowders. However, these methods have many shortcomings in practical applications. For example, hot air drying easily leads to agglomeration of powder particles due to electrostatic interactions, affecting their dispersion performance; while spray drying can improve agglomeration to some extent, solvent residue is difficult to completely remove during the drying process, affecting powder purity; although fluidized bed drying can improve powder dispersibility, in applications involving high-purity materials, the selection of equipment materials, airflow control, and impurity contamination remain difficult to address. Summary of the Invention

[0004] To address the aforementioned problems, a drying device for anti-agglomeration ultrafine high-purity spherical silicon micropowder is provided. By proposing a device that can not only dry silicon micropowder efficiently but also prevent agglomeration between silicon micropowder particles, the technical problems of low drying efficiency and easy agglomeration of silicon micropowder in existing drying equipment are solved.

[0005] To address the problems of existing technologies, this invention provides a drying device for anti-agglomeration ultrafine high-purity spherical silicon micropowder, comprising: a drying chamber; a partition is provided inside the drying chamber, the partition dividing the internal space of the drying chamber into an upper chamber and a lower chamber; a through hole for material to pass through is also provided in the middle of the partition; two drying modules are provided, the two drying modules are rotatably arranged in the upper chamber; an opening and closing module is movably arranged in the upper chamber, and the opening and closing module is provided with a first opening and closing frame and a second opening and closing frame that can control the opening and closing of the through hole and the size of the opening and closing; two material dispersing modules are provided, the two material dispersing modules are inclined and arranged in opposite directions in the upper chamber, and the dispersing ends of the two material dispersing modules are inclined towards the through hole; and a material collecting module is vertically arranged in the lower chamber, with the collecting end facing the opening.

[0006] Preferably, the opening and closing module further includes a control unit capable of controlling the first opening and closing frame and the second opening and closing frame to move closer or further apart; two control units are provided, which are slidably disposed below the partition and respectively close to the middle of the first opening and closing frame and the second opening and closing frame.

[0007] Preferably, both the first and second opening and closing frames are semi-circular arc-shaped frames, and a traction block is embedded in the middle of the outer wall of the first and second opening and closing frames; the first and second opening and closing frames are rotatably disposed in the upper compartment and their side walls abut against each other.

[0008] Preferably, the control unit consists of a sliding frame and an electromagnet fixedly disposed within the sliding frame; the sliding frame is slidably disposed on the lower surface of the partition.

[0009] Preferably, the drying module includes a drying unit capable of drying silicon micro powder and a unit capable of continuously drying silicon micro powder. The upper chamber contains two material turning units, which are arranged in a rotatable manner relative to each other. The two material turning units are coaxially arranged with the first opening and closing frame and the second opening and closing frame, respectively. The upper chamber contains two drying units, which are arranged in a rotatable manner relative to each other and are directly opposite the two material turning units.

[0010] Preferably, the material turning unit includes a rotating shaft, a turning plate, a material passing hole, and a drive motor; the rotating shaft is rotatably disposed in the upper chamber along the short side of the drying chamber; the turning plate is radially fixedly disposed on the outer wall of the rotating shaft and has multiple plates arranged circumferentially along the axis of the rotating shaft; each turning plate is also provided with a material passing hole for silicon micro powder to pass through; the drive motor is fixedly disposed on the outer wall of the drying chamber and its output shaft is connected to the rotating shaft for transmission.

[0011] Preferably, the drying unit is a hot air blower.

[0012] Preferably, the bulk material module includes an exhaust pipe, an adjusting frame, and an air supply connector; the two exhaust pipes are respectively fixedly installed on the first opening and closing frame and the second opening and closing frame through corresponding adjusting frames, and the two exhaust pipes are arranged parallel to each other along the short side of the corresponding opening and closing frame; the air supply connector is detached and installed on one side of the exhaust pipe and communicates with the exhaust pipe.

[0013] Preferably, the material collection module is equipped with a one-way limiting plate that can prevent the silicon micro powder from surging and an adsorption unit that can continuously generate negative pressure; the one-way limiting plate is horizontally arranged in the lower chamber along the long side of the drying chamber and is located near the middle of the lower chamber; the adsorption unit is fixedly arranged outside the drying chamber and its adsorption end is connected to the lower chamber.

[0014] A method for drying anti-agglomeration ultrafine high-purity spherical silica powder, using an anti-agglomeration drying device for ultrafine high-purity spherical silica powder, includes the following steps: S1: Introduce the ultrafine high-purity spherical silicon powder to be dried into the upper chamber to ensure that the silicon powder is evenly distributed in the upper chamber; S2: Connect the external power supply to drive the two sets of material turning units to operate. The material turning units alternately turn the silicon powder to avoid material accumulation and enhance air flow, providing a basis for subsequent uniform drying. S3: Start the drying unit and continuously output hot air to the turning unit to ensure that the hot air can fully cover and penetrate the turning silicon powder to achieve rapid and uniform drying; S4: After the silicon powder is dried to the target moisture content, the air supply system is turned on, the air source is introduced into the exhaust pipe, and the airflow is sprayed from the exhaust outlet toward the through hole; at this time, the airflow acts on the silicon powder turned up by the turning unit, making it suspend and evenly dispersed, further destroying the possible agglomeration state, and ensuring the single particle distribution characteristics of the final material. S5: Turn on the adsorption unit. The adsorption unit starts to create a stable negative pressure environment at the through hole. Using the principle of negative pressure adsorption, the dried suspended silicon powder is quickly sucked into the lower chamber. After the silicon powder enters the lower chamber, it passes through the one-way limiting plate in sequence under the action of gravity and finally collects at the bottom of the lower chamber, completing the drying and collection process.

[0015] The advantages of this invention compared to the prior art are: 1. This invention achieves efficient drying, rolling, and separation of silicon micropowder through the cooperation of a drying module, an opening and closing module, and a dispersing module. This process ensures that the silicon micropowder is completely dried and free from agglomeration, and ultimately makes it stably suspended in the upper chamber, thereby achieving continuous screening and separation of qualified silicon micropowder.

[0016] 2. Through the cooperation of the collection module, this invention realizes how to effectively and efficiently extract and separate qualified silicon micro powder, accurately collect and store qualified dry silicon micro powder, and ensure the purity and collection efficiency of the final collected silicon micro powder. Attached Figure Description

[0017] Figure 1 This is a three-dimensional diagram of a drying device for anti-agglomeration ultrafine high-purity spherical silicon micropowder.

[0018] Figure 2 This is a side view of a drying device for anti-agglomeration ultrafine high-purity spherical silicon micropowder.

[0019] Figure 3 yes Figure 2 A sectional view of section A_A.

[0020] Figure 4This is a front view of a drying device for anti-agglomeration ultrafine high-purity spherical silicon micropowder.

[0021] Figure 5 yes Figure 4 Sectional view of section B_B.

[0022] Figure 6 Partial three-dimensional structure of a drying device for anti-agglomeration ultrafine high-purity spherical silica powder Figure 1 .

[0023] Figure 7 Partial three-dimensional structure of a drying device for anti-agglomeration ultrafine high-purity spherical silica powder Figure 2 .

[0024] Figure 8 yes Figure 7 A magnified view of a portion of point C.

[0025] Figure 9 This is a partially exploded three-dimensional diagram of the drying chamber and drying module in a drying device for anti-agglomeration ultrafine high-purity spherical silicon micropowder.

[0026] Figure 10 This is a three-dimensional structural diagram of the drying module in a drying device for anti-agglomeration ultrafine high-purity spherical silicon micropowder.

[0027] The numbers on the map are: 1. Drying chamber; 11. Partition; 12. Through hole; 2. Drying module; 21. Drying unit; 22. Turning unit; 221. Rotating shaft; 222. Turning plate; 223. Material through hole; 224. Drive motor; 3. Opening and closing module; 31. First opening and closing frame; 32. Second opening and closing frame; 33. Control unit; 331. Sliding frame; 332. Electromagnet; 4. Material dispersing module; 41. Exhaust pipe; 42. Adjusting frame; 43. Air supply connector; 5. Material collection module; 51. One-way limiting plate; 52. Adsorption unit. Detailed Implementation

[0028] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0029] See Figures 1 to 10The image shows a drying device for anti-agglomeration ultrafine high-purity spherical silicon micropowder, comprising: a drying chamber 1; a partition 11 is provided inside the drying chamber 1, the partition 11 dividing the internal space of the drying chamber 1 into an upper chamber and a lower chamber; a through hole 12 for material to pass through is also provided in the middle of the partition 11; two drying modules 2 are provided, the two drying modules 2 are rotatably arranged in the upper chamber; an opening and closing module 3 is movably arranged in the upper chamber, and the opening and closing module 3 is provided with a first opening and closing frame 31 and a second opening and closing frame 32 that can control the opening and closing and the size of the opening and closing of the through hole 12; two loose material modules 4 are provided, the two loose material modules 4 are both inclined and arranged in the upper chamber, and the loose material ends of the two loose material modules 4 are inclined towards the through hole 12; and a collecting module 5 is vertically arranged in the lower chamber, with the collecting end facing the opening.

[0030] When drying silicon micropowder is required, the silicon micropowder to be dried is first introduced into the upper chamber from the top of the drying chamber 1, allowing it to fall naturally into the upper chamber under gravity and disperse evenly along both sides of the upper chamber during the falling process. At this time, the two drying modules 2 located on both sides of the upper chamber are started simultaneously, using hot air circulation or far-infrared heating to uniformly dry the silicon micropowder, ensuring uniform heating of the powder, effectively reducing the moisture content and avoiding localized overheating that could lead to powder agglomeration.

[0031] After the silicon powder in the upper chamber is completely dry, the opening / closing module 3 controls the opening degree of the through hole 12 according to the set conduction requirements, connecting the upper and lower chambers. Subsequently, the material dispersing module 4 is activated, releasing a directional material dispersing air source at the through hole 12 to disperse the dried silicon powder at an appropriate wind speed. Because the silicon powder is lightweight and has increased flowability after drying, the material dispersing air source can effectively disperse its aggregated particles and promote their suspension in the air as single particles under the action of airflow, thereby preventing agglomeration.

[0032] When the free-floating silicon powder moves with the airflow to the through-hole 12 area, the collection module 5 in the lower chamber continuously acts, forming a stable negative pressure adsorption force at the through-hole 12. This draws in the free-floating single-particle silicon powder and guides it to the collection system, thereby achieving efficient and uniform powder recovery. Furthermore, throughout the drying and conveying process, the silicon powder remains in a dynamically dispersed state, effectively preventing electrostatic adsorption and secondary moisture condensation, further improving drying quality and collection efficiency.

[0033] See Figure 7 and Figure 9As shown: the opening and closing module 3 also includes a control unit 33 that can control the first opening and closing frame 31 and the second opening and closing frame 32 to move closer or further apart; there are two control units 33, which are slidably disposed below the partition plate 11 and respectively close to the middle of the first opening and closing frame 31 and the second opening and closing frame 32.

[0034] When the transmission gap between the first opening / closing frame 31 and the second opening / closing frame 32 needs to be adjusted according to opening and closing requirements to achieve precise transfer of silicon micropowder, only the two control units 33 need to be driven synchronously to perform actions. Driven by the control units 33, the first opening / closing frame 31 and the second opening / closing frame 32 slide along a set trajectory, thereby achieving adjustment of their relative proximity or distance. The specific opening gap can be precisely set according to transmission requirements, and fine-tuning of the opening / closing frame gap is achieved through the adjustment stroke of the control units 33, ensuring the stability and uniformity of the silicon micropowder transmission process.

[0035] See Figure 6 As shown: the first opening and closing frame 31 and the second opening and closing frame 32 are both first arc-shaped frames arranged in a semi-circle, and a traction block is also embedded in the middle of the outer wall of the first opening and closing frame 31 and the second opening and closing frame 32; the first opening and closing frame 31 and the second opening and closing frame 32 are rotatably arranged in the upper compartment and their side walls abut against each other.

[0036] The partition 11 is composed of two semi-circular second arc-shaped frames, which are arranged opposite each other, and the gap between the two second arc-shaped frames forms the material discharge through hole 12.

[0037] When the through hole 12 needs to be closed, the first opening and closing frame 31 and the second opening and closing frame 32 are driven to approach each other by operating the two sets of control units 33. At this time, the first opening and closing frame 31 and the second opening and closing frame 32 will rotate coaxially along a set trajectory within their respective second arc-shaped frames, and gradually close until their ends abut against each other, thereby achieving complete closure of the through hole 12. Similarly, when the through hole 12 needs to be opened, the first opening and closing frame 31 and the second opening and closing frame 32 only need to be driven to move away from each other synchronously to achieve precise opening of the through hole 12. The precise control of the opening gap of the through hole 12 can be achieved by adjusting the rotation stroke of the first opening and closing frame 31 and the second opening and closing frame 32 to adapt to different material feeding requirements.

[0038] In addition, during the drying process, in order to optimize the airflow distribution and improve the drying uniformity, the opening of the second arc-shaped frame can be covered by manipulating the first opening and closing frame 31 and the second opening and closing frame 32 to form two independent circular drying chambers, thereby preventing the silicon micro powder from being affected by air disturbance during the drying process and causing uneven drying, thus improving the drying effect.

[0039] See Figure 3As shown: The control unit 33 consists of a sliding frame 331 and an electromagnet 332 fixedly disposed within the sliding frame 331; the sliding frame 331 is slidably disposed on the lower surface of the partition 11.

[0040] When it is necessary to adjust the sliding stroke of the first opening / closing frame 31 or the second opening / closing frame 32, the position of the sliding frame 331 can be adjusted manually or automatically. Specifically, by holding the sliding frame 331 and pushing it along the preset guide trajectory to the target position and then locking it, the sliding stroke adjustment can be completed. During the sliding of the sliding frame 331 along the outer wall of the partition 11, the electromagnet 332 inside the sliding frame 331 is continuously energized and generates magnetic attraction, thereby precisely pulling the traction block embedded in the outer wall of the first opening / closing frame 31 or the second opening / closing frame 32, realizing the synchronous sliding adjustment of the first opening / closing frame 31 and the second opening / closing frame 32. After the sliding is completed, the sliding frame 331 can be fixed in the target position by the locking mechanism to ensure stable operation of the opening / closing frame and maintain the set open or closed state. In addition, the control unit 33 is not limited to the electromagnet 332, and other actuators capable of sliding drive can also be used, such as the drive motor 224 or the cylinder, to meet the needs of different application scenarios.

[0041] See Figure 9 and Figure 10 As shown: The drying module 2 is equipped with a drying unit 21 that can dry silicon micro powder and a turning unit 22 that can continuously turn silicon micro powder; there are two turning units 22, which are rotatably arranged in the upper chamber, and the two turning units 22 are coaxially arranged with the first opening and closing frame 31 and the second opening and closing frame 32 respectively. The drying unit 21 is provided in two parts, which are arranged opposite each other in the upper chamber and are directly opposite the two turning units 22.

[0042] After the silicon microparticles are introduced into the upper chamber, to ensure thorough drying, an external power supply is first activated to drive two turning units 22 to operate synchronously. This allows the turning units 22 to evenly rotate the silicon microparticles, preventing uneven heating or agglomeration when the microparticles are stationary. While the turning units 22 continuously rotate the silicon microparticles, two drying units 21 start simultaneously and stably output high-temperature hot air towards the turning units 22. The hot air penetrates the rotating silicon microparticles, achieving continuous and efficient heat transfer, thus ensuring that each particle of the silicon microparticles is heated evenly. Simultaneously, the dynamic action of the turning units 22 further promotes the penetration of hot air, improves drying efficiency, and prevents localized overheating.

[0043] See Figure 10As shown: The material turning unit 22 includes a rotating shaft 221, a turning plate 222, a material passing hole 223, and a drive motor 224; the rotating shaft 221 is rotatably disposed in the upper chamber body along the short side direction of the drying chamber 1; the turning plate 222 is radially fixedly disposed on the outer wall of the rotating shaft 221 and multiple plates are arranged circumferentially along the axis of the rotating shaft 221; each turning plate 222 is also provided with a material passing hole 223 for silicon micro powder to pass through; the drive motor 224 is fixedly disposed on the outer wall of the drying chamber 1 and its output shaft is connected to the rotating shaft 221 for transmission.

[0044] When the silicon micropowder needs to be lifted and turned, an external power supply is first connected to drive the drive motor 224. The output shaft of the drive motor 224 rotates and synchronously drives the rotating shaft 221 to rotate. During the rotation of the rotating shaft 221, the turning plate 222 is further driven to perform a periodic turning motion, thereby achieving the lifting and turning effect of the silicon micropowder. Under the turning action of the turning plate 222, the silicon micropowder is rolled up into the air circulation area, so that its particle surface is evenly exposed to the high-temperature airflow, thereby improving the heat exchange efficiency and ensuring that the silicon micropowder is fully in contact with the hot air for efficient drying. In addition, the through holes 223 provided through the turning plate allow some silicon micropowder to pass through during the turning process, avoiding powder accumulation, while enhancing air circulation and promoting overall drying uniformity.

[0045] See Figure 10 As shown: Drying unit 21 is specifically a hot air blower.

[0046] The drying unit 21 described in this application is specifically a hot air blower. The hot air blower continuously outputs high-temperature airflow towards the silicon micropowder, thereby effectively exchanging heat with the silicon micropowder and achieving rapid drying. The hot air blower can output stable hot air according to set temperature and wind speed parameters, ensuring uniform heating of the silicon micropowder during the drying process, avoiding localized overheating or insufficient drying, and improving overall drying efficiency. Furthermore, the continuous output of the hot air blower keeps the silicon micropowder in a uniformly heated state during the drying process, helping to prevent powder agglomeration and improving drying quality. The drying unit 21 is prior art and will not be described in detail here. The drying unit 21 is not limited to a hot air blower and aims to achieve continuous drying of silicon micropowder.

[0047] See Figure 8 As shown: The bulk material module 4 includes an exhaust pipe 41, an adjusting frame 42, and an air supply connector 43; the two exhaust pipes 41 are respectively fixedly installed on the first opening and closing frame 31 and the second opening and closing frame 32 through the corresponding adjusting frames 42, and the two exhaust pipes 41 are arranged parallel to each other along the short side of the corresponding opening and closing frame; the air supply connector 43 is detached and installed on one side of the exhaust pipe 41 and is connected to the exhaust pipe 41.

[0048] When collecting the fully dried silicon microparticles, first connect the air supply connector 43 to an external air source, allowing the air to enter the exhaust pipe 41 and be evenly discharged through the exhaust outlet of the exhaust pipe 41 towards the through hole 12. The air supply can be introduced simultaneously during the silicon microparticle turning process, using the impact force of the airflow to blow the turned silicon microparticles away from the turning area, causing the fully dried and non-agglomerated silicon microparticles to float. During this process, the silicon microparticles exhibit stratification and floating due to differences in particle size and mass, creating a sieving effect. This effectively separates the fully dried silicon microparticles with suitable particle size, achieving high-quality sieving and improving the yield. Finally, by reasonably controlling the air supply pressure and exhaust flow rate, the sieving accuracy can be further optimized, ensuring that the collected silicon microparticles have good uniformity and flowability.

[0049] See Figure 7 As shown: The material collection module 5 is equipped with a one-way limiting plate 51 to prevent silicon micropowder from surging and an adsorption unit 52 to continuously generate negative pressure; the one-way limiting plate 51 is horizontally arranged along the long side of the drying chamber 1. The adsorption unit 52 is fixedly disposed outside the drying chamber 1 and its adsorption end is connected to the lower chamber.

[0050] When it is necessary to collect the completely dried silicon powder, an external power source is first connected to drive the adsorption unit 52 to operate. The adsorption unit 52 is existing technology and will not be described in detail here. After the adsorption unit 52 is activated, its internal suction device operates, creating a stable negative pressure adsorption zone at the through-hole 12. Under the action of negative pressure, the silicon powder, blown up and suspended in the air by the material distribution module 4, is rapidly sucked in and enters the lower chamber through the through-hole 12. After entering the lower chamber, the silicon powder continues to fall due to gravity, passing through the one-way limiting plate 51 in sequence, and finally collecting at the bottom of the lower chamber. During this process, the one-way limiting plate 51 effectively controls the unidirectional flow of the silicon powder, preventing backflow or leakage, thereby ensuring the efficiency and airtightness of the collection process and avoiding material loss and environmental pollution.

[0051] A drying method for anti-agglomeration ultrafine high-purity spherical silica powder, applied to a drying apparatus for anti-agglomeration ultrafine high-purity spherical silica powder, includes the following steps: S1: Introduce the ultrafine high-purity spherical silicon powder to be dried into the upper chamber to ensure that the silicon powder is evenly distributed in the upper chamber.

[0052] S2: Connect the external power supply to drive the two sets of turning units 22 to operate. The turning units 22 alternately turn the silicon micro powder to avoid material accumulation and enhance air flow, providing a basis for subsequent uniform drying.

[0053] S3: Start the drying unit 21 and continuously output hot air to the turning unit 22 to ensure that the hot air can fully cover and penetrate the turning silicon powder, so as to achieve rapid and uniform drying and avoid the problem of local overheating or incomplete drying of the material.

[0054] S4: After the silicon powder is dried to the target moisture content, the air supply system is turned on, and the air source is introduced into the exhaust pipe 41, and airflow is sprayed from the exhaust outlet toward the through hole 12. At this time, the airflow acts on the silicon powder turned up by the turning unit 22, making it suspend and evenly dispersed, further breaking the possible agglomeration state, and ensuring the single particle distribution characteristics of the final material.

[0055] S5: Turn on the adsorption unit 52. The adsorption unit 52 starts to form a stable negative pressure environment at the through hole 12. The dried suspended silicon powder is quickly sucked into the lower chamber by the principle of negative pressure adsorption. After the silicon powder enters the lower chamber, it passes through the one-way limiting plate 51 in sequence under the action of gravity and finally gathers at the bottom of the lower chamber, completing the drying and collection process.

[0056] This invention not only enables efficient drying of silicon micropowder but also effectively prevents agglomeration between silicon micropowder particles, resulting in high drying efficiency and good effect.

[0057] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A drying device for anti-agglomeration ultrafine high-purity spherical silica powder, characterized in that, include: Drying chamber (1); the drying chamber (1) is provided with a partition (11), which divides the internal space of the drying chamber (1) into an upper chamber and a lower chamber; the partition (11) is also provided with a through hole (12) in the middle for material to pass through. Drying module (2), there are two drying modules (2), which are rotatably arranged in the upper chamber; The opening and closing module (3) is movably disposed within the upper compartment. The opening and closing module (3) is provided with two opening and closing frames, namely a first opening and closing frame (31) and a second opening and closing frame (32), which can control the opening and closing of the through hole (12) and the size of the opening and closing. The opening and closing module (3) also includes a control unit (33) which can control the first opening and closing frame (31) and the second opening and closing frame (32) to move closer or further apart. There are two control units (33), which are slidably disposed below the partition (11) and close to the first opening and closing frame (31) and the second opening and closing frame, respectively. (32) is located in the middle. The first opening and closing frame (31) and the second opening and closing frame (32) are both first arc-shaped frames arranged in a semi-circle. The outer walls of the first opening and closing frame (31) and the second opening and closing frame (32) are also embedded with traction blocks. The first opening and closing frame (31) and the second opening and closing frame (32) are rotatably arranged in the upper compartment and their side walls abut against each other. The control unit (33) consists of a sliding frame (331) and an electromagnet (332) fixedly arranged in the sliding frame (331). The sliding frame (331) is slidably arranged on the lower surface of the partition (11). Bulk material module (4), there are two bulk material modules (4), both of which are inclined and set opposite each other in the upper hopper, and the bulk material ends of both bulk material modules (4) are inclined towards the through hole (12). The bulk material module (4) includes an exhaust pipe (41), an adjustment frame (42) and an air supply connector (43). The two exhaust pipes (41) are respectively fixed on the first opening and closing frame (31) and the second opening and closing frame (32) through the corresponding adjustment frame (42), and the two exhaust pipes (41) are arranged parallel to each other along the short side of the corresponding opening and closing frame. The air supply connector (43) is detached and set on one side of the exhaust pipe (41) and connected to the exhaust pipe (41). The material collection module (5) is vertically installed in the lower silo and the material collection end is directly opposite the opening.

2. The drying device for anti-agglomeration ultrafine high-purity spherical silica powder according to claim 1, characterized in that, The drying module (2) is equipped with a drying unit (21) that can dry silicon micro powder and a turning unit (22) that can continuously turn silicon micro powder. The material turning unit (22) is provided in two, and the two material turning units (22) are rotatably arranged in the upper chamber, and the two material turning units (22) are coaxially arranged with the first opening and closing frame (31) and the second opening and closing frame (32), respectively. The drying unit (21) is provided in two, and the two drying units (21) are arranged opposite each other in the upper chamber and are respectively positioned directly opposite the two turning units (22).

3. The drying device for anti-agglomeration ultrafine high-purity spherical silica powder according to claim 2, characterized in that, The material turning unit (22) includes a rotating shaft (221), a material turning plate (222), a material passing hole (223), and a drive motor (224). The rotating shaft (221) is rotatably disposed in the upper chamber along the short side direction of the drying chamber (1); The flipping plate (222) is radially fixed on the outer wall of the rotating shaft (221) and multiple flipping plates (222) are arranged circumferentially along the axis of the rotating shaft (221); each flipping plate (222) is also provided with a through hole (223) for silicon micro powder to pass through. The drive motor (224) is fixedly installed on the outer wall of the drying chamber (1) and its output shaft is connected to the rotating shaft (221) for transmission.

4. The drying device for anti-agglomeration ultrafine high-purity spherical silica powder according to claim 2, characterized in that, The drying unit (21) is specifically a hot air blower.

5. The drying device for anti-agglomeration ultrafine high-purity spherical silica powder according to claim 1, characterized in that, The material collection module (5) is equipped with a one-way limiting plate (51) that can prevent the silicon powder from surging and an adsorption unit (52) that can continuously generate negative pressure. The one-way limiting plate (51) is horizontally arranged in the lower chamber along the long side of the drying chamber (1) and is located near the middle of the lower chamber. The adsorption unit (52) is fixedly installed outside the drying chamber (1) and its adsorption end is connected to the lower chamber.

6. A drying method for anti-agglomeration ultrafine high-purity spherical silica powder, applied to the drying apparatus for anti-agglomeration ultrafine high-purity spherical silica powder as described in any one of claims 1-5, characterized in that, Includes the following steps: S1: Introduce the ultrafine high-purity spherical silicon powder to be dried into the upper chamber to ensure that the silicon powder is evenly distributed in the upper chamber; S2: Connect the external power supply to drive the two sets of material turning units (22) to operate. The material turning units (22) alternately turn the silicon micro powder to avoid material accumulation and enhance air flow, providing a basis for subsequent uniform drying. S3: Start the drying unit (21) and continuously output hot air source to the turning unit (22) to ensure that the hot air can fully cover and penetrate the turning silicon powder to achieve rapid and uniform drying; S4: When the silicon powder is dried to the target moisture content, turn on the gas supply system, introduce the gas source into the exhaust pipe (41), and spray the airflow from the exhaust outlet toward the through hole (12); at this time, the airflow acts on the silicon powder turned up by the turning unit (22), making it suspend and disperse evenly, further destroying the possible agglomeration state, and ensuring the single particle distribution characteristics of the final material. S5: Turn on the adsorption unit (52). The adsorption unit (52) is activated to form a stable negative pressure environment at the through hole (12). The dry suspended silicon powder is quickly sucked into the lower chamber by the principle of negative pressure adsorption. After the silicon powder enters the lower chamber, it passes through the one-way limiting plate (51) in sequence under the action of gravity and finally gathers at the bottom of the lower chamber to complete the drying and collection process.

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