Drying device and method for anti-agglomeration superfine high-purity spherical silica powder

Abstract

The invention relates to the technical field of silica powder processing, in particular to an anti-agglomeration superfine high-purity spherical silica powder drying device and method. The inner 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 materials to penetrate through is further formed in the middle of the partition plate. The number of the drying modules is two, and the two drying modules are arranged in the upper bin body in a relatively rotating mode; the opening and closing module is movably arranged in the upper bin body, and the opening and closing module is provided with a first opening and closing frame and a second opening and closing frame which can control opening and closing of the through hole and the opening and closing size; the number of the material dispersing modules is two, and the two material dispersing modules are oppositely arranged in the upper bin body in an inclined state; the material collecting module is vertically arranged in the lower bin body; according to the silica powder drying device, silica powder can be efficiently dried, agglomeration of the silica powder can be effectively avoided, the drying efficiency is high, and the effect is good.

Description

Technical Field

[0001] The present invention relates to the technical field of silica powder processing, and specifically relates to a drying device and method for anti-agglomeration ultra-fine high-purity spherical silica powder. Background Art

[0002] Ultra-fine high-purity spherical silica powder has a wide range of applications in the fields of electronic packaging, semiconductor manufacturing, high-performance coatings, etc. due to its excellent physical and chemical properties. However, due to the small particle size and large specific surface area of ultra-fine high-purity spherical silica powder, it is extremely easy to agglomerate during storage and transportation, resulting in reduced fluidity and poor dispersibility, which in turn affects its subsequent processing and product performance. Therefore, how to effectively avoid the agglomeration of ultra-fine high-purity spherical silica powder during the drying process and ensure its uniform dispersibility and high purity has become a key issue in the current technical research in this field.

[0003] In the prior art, hot air drying, spray drying or fluidized bed drying are often used to process silica powder, but these methods have many deficiencies in practical applications. For example, the hot air drying method is prone to cause agglomeration between powder particles due to electrostatic action, affecting its dispersion performance; although spray drying can improve the agglomeration problem to a certain extent, it is difficult to completely remove the solvent residue during the drying process, affecting the purity of the powder; although the fluidized bed drying method can improve the dispersibility of the powder, in the application scenario of high-purity materials, problems such as the selection of equipment materials, air flow control and impurity pollution are still difficult to solve. Summary of the Invention

[0004] In view of the above problems, a drying device for anti-agglomeration ultra-fine high-purity spherical silica powder is provided, by proposing a device that can not only efficiently dry the silica powder but also prevent agglomeration between the silica powders, thereby solving the technical problems of low drying efficiency and easy agglomeration between silica powders when the existing drying equipment dries the silica powder.

[0005] To solve the problems of the prior art, the present invention provides a drying device for anti-agglomeration ultra-fine high-purity spherical silica powder, comprising: a drying chamber; a partition is provided in the drying chamber, and the partition divides the internal space of the drying chamber into an upper chamber and a lower chamber; a through hole for the material to pass through is also opened in the middle of the partition; a drying module, there are two drying modules, and the two drying modules are relatively rotatably arranged in the upper chamber; an opening and closing module, the 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 capable of controlling the opening and closing and the opening and closing size of the through hole; a material scattering module, there are two material scattering modules, and the two material scattering modules are both inclined and relatively arranged in the upper chamber, and the material scattering ends of the two material scattering modules are both inclined towards the through hole; an aggregate module, the aggregate module is vertically arranged in the lower chamber and the aggregate end is arranged 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 approach or move away from each other; there are two control units, and the two control units are slidably arranged relative to each other below the partition and are respectively arranged near the middle parts of the first opening and closing frame and the second opening and closing frame.

[0007] Preferably, both the first opening and closing frame and the second opening and closing frame are first arc-shaped frames arranged in a semicircle, and traction blocks are embedded and installed in the middle parts of the outer walls of the first opening and closing frame and the second opening and closing frame; the first opening and closing frame and the second opening and closing frame are rotatably arranged relative to each other in the upper bin and their side walls are in contact with each other.

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

[0009] Preferably, the drying module is provided with a drying unit capable of drying the silica powder and a material turning unit capable of continuously turning over the silica powder; there are two material turning units, and the two material turning units are rotatably arranged relative to each other in the upper bin, and the two material turning units are respectively arranged coaxially with the first opening and closing frame and the second opening and closing frame; there are two drying units, and the two drying units are oppositely arranged in the upper bin and are respectively arranged opposite to the two material turning units.

[0010] Preferably, the material turning unit includes a rotating shaft, a material turning plate, a material passing hole and a driving motor; the rotating shaft is rotatably arranged in the upper bin along the short side direction of the drying chamber; the material turning plates are radially fixedly arranged on the outer wall of the rotating shaft and are circumferentially arranged along the axis of the rotating shaft in a plurality; a material passing hole for the silica powder to pass through is also penetrated and opened on each material turning plate; the driving motor is fixedly arranged on the outer wall of the drying chamber and the output shaft is in transmission connection with the rotating shaft.

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

[0012] Preferably, the material scattering module includes an exhaust pipe, an adjusting frame and a gas supply joint; the exhaust pipe is fixedly arranged on the first opening and closing frame through the adjusting frame and is arranged parallel to the short side direction of the first opening and closing frame; the gas supply joint is detachably arranged on one side of the exhaust pipe and is communicated with the exhaust pipe.

[0013] Preferably, the aggregate module is provided with a one-way limiting plate capable of preventing the silica powder from surging and an adsorption unit capable of continuously generating negative pressure; the one-way limiting plate is horizontally arranged in the lower bin along the long side direction of the drying chamber and is arranged near the middle of the lower bin; the adsorption unit is fixedly arranged outside the drying chamber and the adsorption end is communicated with the lower bin.

[0014] A drying method for anti-agglomeration ultra-fine high-purity spherical silica powder, applying a drying device for anti-agglomeration ultra-fine high-purity spherical silica powder, comprising the following steps: S1: Introduce the ultra-fine high-purity spherical silica powder to be dried into the upper bin to ensure uniform distribution of the silica powder in the upper bin; S2: Connect the external power supply to drive the two groups of material turning units to act. The material turning units alternately turn the silica powder to avoid material accumulation and enhance air fluidity, providing a basis for subsequent uniform drying; S3: Start the drying unit and continuously output a hot air source towards the material turning unit direction to ensure that the hot air can fully cover and penetrate the turned silica powder, achieving rapid and uniform drying; S4: When the silica powder is dried to the target moisture content, turn on the air supply system, introduce the air source into the exhaust pipe, and eject air flow from the exhaust outlet towards the through holes; at this time, the air flow acts on the silica powder turned up by the material turning unit, making it suspended and evenly dispersed, further destroying the possible agglomerated state and ensuring the single-particle distribution characteristics of the final material; S5: Turn on the adsorption unit. Starting the adsorption unit creates a stable negative pressure environment at the through holes, and using the negative pressure adsorption principle, quickly suck the dried suspended silica powder into the lower bin; after the silica powder enters the lower bin, it passes through the one-way limit plate in sequence under the action of gravity and finally converges to the bottom of the lower bin to complete the drying and collection process.

[0015] The beneficial effects of the present invention compared with the prior art are: 1. Through the cooperation of the drying module, the opening and closing module, and the material scattering module, the present invention realizes the effects of how to efficiently dry, lift, and separate the silica powder; this process can ensure that the silica powder is completely dried and free of agglomeration, and finally makes it stably suspended in the upper bin, thereby realizing the continuous screening and separation of qualified silica powder.

[0016] 2. Through the cooperation of the aggregate module, the present invention realizes how to effectively suck and separate qualified silica powder, can accurately collect and store qualified dried silica powder, and ensures the purity and collection efficiency of the finally collected silica powder. Description of the Drawings

[0017] Figure 1 is a three-dimensional view of a drying device for anti-agglomeration ultra-fine high-purity spherical silica powder.

[0018] Figure 2 is a side view of a drying device for anti-agglomeration ultra-fine high-purity spherical silica powder.

[0019] Figure 3 is Figure 2 the cross-sectional view taken along the A-A of

[0020] Figure 4It is the front view of a drying device for anti - agglomeration ultra - fine high - purity spherical silica powder.

[0021] Figure 5 It is Figure 4 the cross - sectional view taken along line B - B of

[0022] Figure 6 It is the three - dimensional view of a partial structure of a drying device for anti - agglomeration ultra - fine high - purity spherical silica powder Figure 1 .

[0023] Figure 7 It is the three - dimensional view of a partial structure of a drying device for anti - agglomeration ultra - fine high - purity spherical silica powder Figure 2 .

[0024] Figure 8 It is Figure 7 the enlarged view of a partial area at C of

[0025] Figure 9 It is the exploded three - dimensional view of a partial structure of the drying chamber and the drying module in a drying device for anti - agglomeration ultra - fine high - purity spherical silica powder.

[0026] Figure 10 It is the three - dimensional view of a partial structure of the drying module in a drying device for anti - agglomeration ultra - fine high - purity spherical silica powder.

[0027] The reference numerals in the figure are: 1. Drying chamber; 11. Partition board; 12. Through hole; 2. Drying module; 21. Drying unit; 22. Material - turning unit; 221. Rotating shaft; 222. Material - turning plate; 223. Material - passing hole; 224. Driving motor; 3. Opening - closing module; 31. First opening - closing frame; 32. Second opening - closing frame; 33. Control unit; 331. Sliding frame; 332. Electromagnet; 4. Material - spreading module; 41. Exhaust pipe; 42. Adjusting frame; 43. Air - supply joint; 5. Aggregating module; 51. One - way limiting plate; 52. Adsorption unit. Detailed implementation mode

[0028] To further understand the features, technical means, specific purposes and functions achieved by the present invention, the present invention will be further described in detail below in combination with the drawings and specific implementation modes.

[0029] See Figures 1 to 10Shown: A drying device for anti-agglomeration ultra-fine high-purity spherical silica powder, comprising: a drying chamber 1; a partition 11 is provided in the drying chamber 1, and the partition 11 divides the internal space of the drying chamber 1 into an upper chamber and a lower chamber; a through hole 12 for the material to pass through is further opened in the middle of the partition 11; a drying module 2, there are two drying modules 2, and the two drying modules 2 are relatively rotatably arranged in the upper chamber; an opening and closing module 3, the 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 opening and closing size of the through hole 12; a material scattering module 4, there are two material scattering modules 4, and the two material scattering modules 4 are both arranged obliquely and relatively in the upper chamber, and the material scattering ends of the two material scattering modules 4 are both obliquely oriented towards the through hole 12; an aggregate module 5, the aggregate module 5 is vertically arranged in the lower chamber and the aggregate end is facing the opening.

[0030] When the silica powder needs to be dried, first, the silica powder to be dried is introduced from the top of the drying chamber 1 into the upper chamber, and it naturally falls into the upper chamber under the action of gravity and is evenly dispersed 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 synchronously, and the silica powder is evenly dried by means of hot air circulation or far-infrared heating, ensuring that the powder is evenly heated, effectively reducing the moisture content and avoiding agglomeration of the powder caused by excessive local temperature.

[0031] After the silica powder in the upper chamber is completely dried, the opening and closing module 3 controls the opening degree of the through hole 12 according to the set conduction requirement to connect the upper chamber and the lower chamber. Subsequently, the material scattering module 4 is driven to act, and a directional material scattering air source is released at the through hole 12 to blow the dried silica powder at an appropriate wind speed. Since the silica powder is light in mass and enhanced in fluidity after drying, the material scattering air source can effectively disperse its aggregated particles and cause them to be suspended in the air in a single-particle state under the action of the air flow, thus avoiding the occurrence of agglomeration.

[0032] When the silica powder in the free state in the air moves to the area of the through hole 12 with the air flow, the aggregate module 5 in the lower chamber continuously acts to form a stable negative pressure adsorption force at the through hole 12, sucking the single-particle silica powder in the free state and guiding it to the collection system, thereby realizing efficient and uniform powder recovery. In addition, throughout the drying and conveying process, the silica powder is always in a dynamic dispersion state, effectively preventing electrostatic adsorption and secondary condensation of moisture, and further improving the drying quality and collection efficiency.

[0033] See Figure 7 and Figure 9As shown: The opening and closing module 3 further includes a control unit 33 capable of controlling the first opening and closing frame 31 and the second opening and closing frame 32 to approach or move away from each other; there are two control units 33, and the two control units 33 are relatively slidably arranged below the partition 11 and are respectively arranged near the middle parts of the first opening and closing frame 31 and the second opening and closing frame 32.

[0034] When it is necessary to adjust the transmission gap between the first opening and closing frame 31 and the second opening and closing frame 32 according to the opening and closing requirements to achieve precise conduction of silica fume, only need to synchronously drive the two control units 33 to execute actions. Through the drive of the control unit 33, the first opening and closing frame 31 and the second opening and closing frame 32 slide along the set track, so as to realize the adjustment of approaching or moving away from each other between the two. The specific opening gap can be accurately set according to the transmission requirements, and the fine adjustment of the gap between the opening and closing frames is realized through the adjustment stroke of the control unit 33 to ensure the stability and uniformity of the silica fume 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-circular shape, and traction blocks are embedded in the middle parts of the outer walls 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 relatively rotatably arranged in the upper bin body and the side walls are in contact with each other.

[0036] The partition 11 is also composed of two second arc-shaped frames arranged in a semi-circular shape, and the two arc-shaped frames are arranged oppositely, and the gap left between the two second arc-shaped frames forms a blanking through hole 12.

[0037] When it is necessary to close the through hole 12, by operating the two groups of control units 33 to drive the first opening and closing frame 31 and the second opening and closing frame 32 to approach each other, at this time, the first opening and closing frame 31 and the second opening and closing frame 32 will rotate coaxially along the set track in their respective corresponding second arc-shaped frames and gradually close until the ends are in contact with each other, so as to realize the complete closing of the through hole 12. Similarly, when it is necessary to open the through hole 12, only need to synchronously drive the first opening and closing frame 31 and the second opening and closing frame 32 to move away from each other, and the precise opening of the through hole 12 can be realized. The precise control of the opening gap of the through hole 12 can be realized 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 blanking requirements.

[0038] In addition, during the drying process, in order to optimize the air flow distribution and improve the drying uniformity, the openings of the second arc-shaped frames can be covered by controlling the first opening and closing frame 31 and the second opening and closing frame 32 to form two independent circular drying chambers, so as to prevent the problem of uneven drying caused by the influence of air disturbance on the silica fume during the drying process and improve the drying effect.

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

[0040] When it is necessary to adjust the sliding stroke of the first opening and closing frame 31 or the second opening and closing frame 32, the position of the sliding frame 331 can be adjusted manually or automatically. Specifically, hold the sliding frame 331 and push it along the preset guiding track to the target position and then lock it to complete the adjustment of the sliding stroke. During the process of the sliding frame 331 sliding along the outer wall of the partition plate 11, the electromagnet 332 provided inside the sliding frame 331 is continuously energized and generates a magnetic suction force, so as to precisely traction the traction blocks embedded in the outer walls of the first opening and closing frame 31 or the second opening and closing frame 32, realizing the synchronous sliding adjustment of the first opening and closing frame 31 and the second opening and closing frame 32. After the sliding is completed, the sliding frame 331 can be fixed at the target position through a locking mechanism to ensure the stable operation of the opening and closing frame and maintain the set opening or closed state. In addition, the control unit 33 is not limited to the electromagnet 332, and other actuating mechanisms capable of realizing sliding drive, such as a driving motor 224 or a cylinder, can also be used to meet the requirements of different application scenarios.

[0041] See Figure 9 and Figure 10 As shown: The drying module 2 is provided with a drying unit 21 capable of drying silicon micropowder and a material turning unit 22 capable of continuously turning over silicon micropowder; there are two material turning units 22, and the two material turning units 22 are relatively rotatably arranged inside the upper bin, 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; there are two drying units 21, and the two drying units 21 are relatively arranged inside the upper bin and are respectively arranged opposite to the two material turning units 22.

[0042] After the silicon micro-material is introduced into the upper bin, in order to ensure its full drying, first connect the external power supply to drive the two material turning units 22 to act synchronously, so that the material turning units 22 uniformly turn over the silicon micro-material to avoid uneven heating or agglomeration of the silicon micro-material in a static state. During the process of the material turning units 22 continuously turning over the silicon micro-material, the two drying units 21 are started simultaneously and stably output a high-temperature hot air source towards the material turning units 22, and the hot air penetrates through the turning silicon micro-material to realize continuous and efficient heat transfer, so as to ensure that each particle of the silicon micro-material is uniformly heated. At the same time, the dynamic action of the material turning units 22 can further promote the permeability of the hot air, improve the drying efficiency, and prevent local overheating.

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

[0044] When it is necessary to perform the lifting and turning operation on the silicon micro powder, first connect to an external power supply to drive the driving motor 224 to operate. The output shaft of the driving motor 224 rotates and synchronously drives the rotating shaft 221 to rotate, so that the rotating shaft 221 further drives the material turning plate 222 to perform a periodic turning motion during the rotation process, thereby realizing the lifting and turning effect on the silicon micro powder. Under the turning action of the material turning plate 222, the silicon micro powder is lifted to the air circulation area, making the particle surface evenly exposed to the high-temperature air flow, thereby improving the heat exchange efficiency and ensuring that the silicon micro powder fully contacts the hot air to achieve efficient drying. In addition, the material passing holes 223 formed through the turning plate can allow some silicon micro powder to pass through during the turning process, avoiding powder accumulation, enhancing air circulation, and promoting overall drying uniformity.

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

[0046] The drying unit 21 described in the present application is specifically a hot air blower, and the hot air blower is used to continuously output high-temperature air flow towards the silicon micro powder, thereby performing effective heat exchange treatment on the silicon micro powder to achieve rapid drying. The hot air blower can output stable hot air according to the set temperature and wind speed parameters, ensuring that the silicon micro powder is evenly heated during the drying process, avoiding local overheating or insufficient drying, and improving the overall drying efficiency. In addition, the continuous output of the hot air blower keeps the silicon micro powder in a uniformly heated state during the drying process, which helps to prevent powder agglomeration and improve the drying quality. The drying unit 21 is a prior art and will not be elaborated here. The drying unit 21 is not limited to a hot air blower for the purpose of continuously drying the silicon micro powder.

[0047] See Figure 8 As shown: The material scattering module 4 includes an exhaust duct 41, an adjusting frame 42, and a gas supply joint 43; the exhaust duct 41 is fixedly arranged on the first opening and closing frame 31 through the adjusting frame 42 and is arranged in parallel along the short side direction of the first opening and closing frame 31; the gas supply joint 43 is detachably arranged on one side of the exhaust duct 41 and is communicated with the exhaust duct 41.

[0048] When it is necessary to collect the fully dried silicon micro powder, first connect the air supply joint 43 to an external air source, so that the air source enters the exhaust pipe 41 and is evenly discharged through the exhaust outlet of the exhaust pipe 41 towards the through hole 12. The introduction of the air source can be carried out synchronously during the process of turning the silicon micro powder, so as to use the impact force of the air flow to blow the lifted silicon micro powder away from the turning area, making the fully dried and non-agglomerated silicon micro powder in a floating state. During this process, the silicon micro powder is stratified and floats due to different particle sizes and masses, thus forming a wind sieve effect, enabling the effectively separation of the silicon micro powder with sufficient drying and appropriate particle sizes, achieving high-quality screening and improving the yield. Finally, by reasonably regulating the air supply pressure and exhaust flow rate, the screening accuracy can be further optimized to ensure that the collected silicon micro powder has good uniformity and fluidity.

[0049] See Figure 7 As shown in the figure: The aggregate module 5 is provided with a one-way limit plate 51 that can prevent the silicon micro powder from surging and an adsorption unit 52 that can continuously generate negative pressure; the one-way limit plate 51 is horizontally arranged along the long side direction of the drying chamber 1 in the lower bin body and is arranged near the middle of the lower bin body; the adsorption unit 52 is fixedly arranged outside the drying chamber 1 and its adsorption end is communicated with the lower bin body.

[0050] When it is necessary to collect the fully dried silicon micro powder, first connect to an external power source to drive the adsorption unit 52 to act. The adsorption unit 52 is a prior art and will not be elaborated here. After the adsorption unit 52 is started, its internal suction device operates, forming a stable negative pressure adsorption area at the through hole 12. Under the action of negative pressure, the silicon micro powder blown up and suspended in the air by the bulk material module 4 is quickly sucked in and enters the lower bin body through the through hole 12. After the silicon micro powder enters the lower bin body, due to the action of gravity, it will continue to fall and pass through the one-way limit plate 51 in sequence, and finally gather at the bottom of the lower bin body. During this process, the one-way limit plate 51 effectively controls the one-way flow of the silicon micro powder, avoiding backflow or leakage, thus ensuring the efficiency and airtightness of the collection process and avoiding material loss and environmental pollution.

[0051] A drying method for anti-agglomeration ultra-fine high-purity spherical silicon micro powder, which is applied to a drying device for anti-agglomeration ultra-fine high-purity spherical silicon micro powder, includes the following steps: S1: Introduce the ultra-fine high-purity spherical silicon micro powder to be dried into the upper bin body to ensure that the silicon micro powder is evenly distributed in the upper bin body.

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

[0053] S3: Start the drying unit 21 and continuously output a hot air source towards the material turning unit 22 to ensure that the hot air can fully cover and penetrate the tumbling silica powder, achieving rapid and uniform drying, and avoiding problems such as local overheating or incomplete drying of the material.

[0054] S4: When the silica powder is dried to the target moisture content, turn on the air supply system, introduce the air source into the exhaust pipe 41, and eject air flow from the exhaust outlet towards the through hole 12. At this time, the air flow acts on the silica powder turned up by the material turning unit 22, making it suspended and evenly dispersed, further destroying the possible agglomerated state, and ensuring the single-particle distribution characteristics of the final material.

[0055] S5: Turn on the adsorption unit 52. When the adsorption unit 52 starts, a stable negative pressure environment is formed at the through hole 12. Using the principle of negative pressure adsorption, the dried suspended silica powder is quickly sucked into the lower bin; after the silica powder enters the lower bin, it passes through the one-way limit plate 51 in sequence under the action of gravity, and finally converges at the bottom of the lower bin to complete the drying and collection process.

[0056] The present invention can not only efficiently dry the silica powder but also effectively avoid agglomeration between silica powders, with high drying efficiency and good effect.

[0057] The above embodiments only represent one or several implementation manners of the present invention, and the description is relatively specific and detailed, but it should not be construed as a limitation to the scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A drying device for anti-agglomeration ultrafine high-purity spherical silicon powder, characterized in that: include: A drying chamber (1); a partition (11) is provided in the drying chamber (1), and the partition (11) divides the internal space of the drying chamber (1) into an upper storage body and a lower storage body; a through hole (12) is also provided in the middle of the partition (11) for materials to pass through; A drying module (2), wherein two drying modules (2) are provided, and the two drying modules (2) are relatively rotatably arranged in the upper bin body; An opening and closing module (3), the opening and closing module (3) being movably arranged in the upper warehouse body, and the opening and closing module (3) being provided with two first opening and closing frames (31) and second opening and closing frames (32) capable of controlling the opening and closing and the opening and closing size of the through hole (12); Bulk material modules (4), wherein two bulk material modules (4) are provided, and the two bulk material modules (4) are arranged relatively in the upper warehouse body in an inclined state, and the bulk material ends of the two bulk material modules (4) are arranged inclined toward the through hole (12); A material collection module (5), wherein the material collection module (5) is vertically arranged in the lower bin body and the material collection end is arranged facing the opening.

2. The drying device for anti-agglomeration ultrafine high-purity spherical silicon powder according to claim 1, characterized in that: The opening and closing module (3) further comprises a control unit (33) capable of controlling the first opening and closing frame (31) and the second opening and closing frame (32) to move closer to or further away from each other; Two control units (33) are provided, and the two control units (33) are relatively slidably arranged below the partition (11) and are respectively arranged close to the middle of the first opening and closing frame (31) and the second opening and closing frame (32).

3. The drying device for anti-agglomeration ultrafine high-purity spherical silicon powder according to claim 2, characterized in that: The first opening and closing frame (31) and the second opening and closing frame (32) are both first arc-shaped frames arranged in a semicircle, and a traction block is 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 relatively rotatably arranged in the upper warehouse body and their side walls abut against each other.

4. The drying device for anti-agglomeration ultrafine high-purity spherical silicon powder according to claim 3, characterized in that: The control unit (33) is composed 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).

5. The drying device for anti-agglomeration ultrafine high-purity spherical silicon powder according to claim 1, characterized in that: The drying module (2) is provided with a drying unit (21) capable of drying the silicon micropowder and a turning unit (22) capable of continuously turning the silicon micropowder. The two material turning units (22) are provided, and the two material turning units (22) are relatively rotatably arranged in the upper bin body, and the two material turning units (22) are respectively coaxially arranged with the first opening and closing frame (31) and the second opening and closing frame (32); Two drying units (21) are provided, and the two drying units (21) are arranged opposite to each other in the upper warehouse body and are arranged opposite to the two material turning units (22) one by one.

6. The drying device for anti-agglomeration ultrafine high-purity spherical silicon powder according to claim 5, characterized in that: The material turning unit (22) comprises a rotating shaft (221), a material turning plate (222), a material penetration hole (223) and a driving motor (224); The rotating shaft (221) is rotatably disposed in the upper bin body along the short side direction of the drying chamber (1); The turning plates (222) are radially fixedly arranged on the outer wall of the rotating shaft (221) and are arranged in a plurality along the circumferential direction of the axis of the rotating shaft (221); each turning plate (222) is also provided with a through hole (223) for silicon micropowder to pass through; The driving motor (224) is fixedly arranged on the outer wall of the drying chamber (1), and the output shaft is drivingly connected to the rotating shaft (221).

7. The drying device for anti-agglomeration ultrafine high-purity spherical silicon powder according to claim 5, characterized in that: The drying unit (21) is specifically a hot air blower.

8. The drying device for anti-agglomeration ultrafine high-purity spherical silicon powder according to claim 1, characterized in that: The bulk material module (4) comprises an exhaust pipe (41), an adjustment frame (42) and an air supply connector (43); The exhaust duct (41) is fixedly arranged on the first opening and closing frame (31) via an adjustment frame (42) and is arranged parallel to the short side direction of the first opening and closing frame (31); The air supply joint (43) is detachably arranged on one side of the exhaust pipe (41) and is in communication with the exhaust pipe (41).

9. The drying device for anti-agglomeration ultrafine high-purity spherical silicon powder according to claim 1, characterized in that: The aggregate module (5) is provided with a one-way limiting plate (51) capable of preventing the silicon micropowder from surging, and an adsorption unit (52) capable of continuously generating negative pressure; The one-way limiting plate (51) is horizontally arranged in the lower bin body along the long side direction of the drying chamber (1) and is arranged close to the middle of the lower bin body; The adsorption unit (52) is fixedly arranged outside the drying chamber (1) and the adsorption end is connected to the lower bin body.

10. A method for drying anti-agglomeration ultrafine high-purity spherical silicon micropowder, applied to a drying device for anti-agglomeration ultrafine high-purity spherical silicon micropowder as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: S1: introducing the ultrafine high-purity spherical silicon powder to be dried into the upper bin to ensure that the silicon powder is evenly distributed in the upper bin; S2: turning on an external power supply to drive the two sets of material turning units (22) to operate, and the material turning units (22) turn the silicon micropowder alternately to avoid material accumulation and enhance air flow, thereby providing a basis for subsequent uniform drying; S3: starting the drying unit (21) to continuously output hot air to the turning unit (22) to ensure that the hot air can fully cover and penetrate the turned silicon micropowder to achieve rapid and uniform drying; S4: After the silicon micropowder is dried to the target moisture content, the air supply system is turned on, the air source is introduced into the exhaust pipe (41), and the air flow is sprayed from the exhaust outlet toward the through hole (12); at this time, the air flow acts on the silicon micropowder turned up by the turning unit (22), so that it is suspended and evenly dispersed, further destroying the agglomeration state that may be formed, and ensuring the single particle distribution characteristics of the final material; S5: Turning on the adsorption unit (52), the adsorption unit (52) is started to form a stable negative pressure environment at the through hole (12), and the dried suspended silicon micropowder is quickly sucked into the lower bin body by using the negative pressure adsorption principle; after the silicon micropowder enters the lower bin body, it passes through the one-way limit plate (51) in sequence under the action of gravity, and finally gathers at the bottom of the lower bin body, completing the drying and collection process.

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