Industrial silicon particle screening and grading device
By using a single-layer filter plate and a serpentine channel design, combined with electric flow regulation and a vibration motor, the problem of complex structure and inaccurate feeding in traditional devices has been solved, achieving efficient and accurate screening and grading of silicon particles, and reducing equipment costs and maintenance difficulty.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINAN SILICON MATERIALS (RUILI) CO LTD
- Filing Date
- 2025-04-14
- Publication Date
- 2026-05-19
AI Technical Summary
Traditional industrial silicon particle screening and grading devices are complex in structure, occupy a large space, and are costly. Furthermore, their inaccurate feed control leads to low screening efficiency and inaccurate grading.
It adopts a single-layer filter plate design with three screening zones on the filter plate. The filter screen opening gradually increases, and the inclined setting and guide plate form a serpentine channel. It is equipped with an electric flow regulating valve and a vibration motor to achieve precise feeding and efficient screening.
Simplify equipment structure, reduce costs, improve screening efficiency and grading accuracy, and ensure the stability of the screening process and ease of equipment maintenance.
Smart Images
Figure CN224253436U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of screening and grading technology, and more specifically, to an industrial silicon particle screening and grading device. Background Technology
[0002] Currently, in the industrial silicon production process, the produced silicon particles vary in size. To meet the stringent particle size requirements of different downstream products, precise screening and grading are essential. Traditional screening and grading devices mostly employ a multi-layer filter plate structure, with each layer corresponding to a different pore size, achieving grading through layer-by-layer screening. However, this design has many drawbacks. The multi-layer filter plates make the equipment structure bulky and complex, occupying a large amount of space, which limits both the selection of equipment installation sites and daily maintenance operations. Moreover, the high equipment cost increases the investment for enterprises.
[0003] While simplifying the process to a single-layer filter plate reduces equipment complexity and cost, the limited plate length makes it difficult to adequately screen silicon particles over short distances, hindering the accurate differentiation of particle sizes and significantly reducing screening efficiency. Furthermore, existing devices generally lack precise control mechanisms in the feeding stage, relying entirely on experience or simple valve control for feed volume. This easily leads to overfeeding, causing silicon particles to accumulate on the filter plate, clogging the sieve holes and severely impacting screening efficiency and final classification accuracy. Additionally, disassembly and cleaning are difficult. Therefore, developing an industrial silicon particle screening device that effectively solves these problems and achieves efficient and accurate screening and classification is urgently needed. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides an industrial silicon particle screening and grading device, which aims to improve the problem that traditional equipment occupies a lot of space, which limits both the selection of equipment installation sites and daily maintenance operations.
[0005] This utility model is implemented as follows: An industrial silicon particle screening and grading device includes a filter box with an open top. A feed box is fixedly installed on one side of the top of the filter box, and a discharge pipe is provided on one side of the bottom of the feed box. A filter plate is bolted inside the filter box. The filter plate is divided into three screening sections. The mesh size of the filter screen in each screening section increases from near to far from the discharge pipe, and the filter plate is inclined. Multiple guide plates are fixedly installed on both sides of the inner wall of the feed box. The guide plates on both sides are staggered and form a serpentine channel. A partition is fixedly installed on the bottom of the inner wall of the filter box. The partition divides the bottom of the filter box into multiple storage areas, which correspond one-to-one with the screening sections. A first discharge port is provided on one side of each storage area, and a second discharge port is provided on the other side of the filter box.
[0006] In a preferred embodiment of this utility model, a flow regulating valve is installed on the discharge pipe. The flow regulating valve is an electric regulating valve and is connected to a flow sensor. The flow sensor is installed inside the discharge pipe and is used to monitor the feed flow rate in real time and provide feedback to the flow regulating valve, thereby achieving automated and precise feed control.
[0007] In a preferred embodiment of this utility model, a vibration motor is fixedly installed on one side of the filter box, and buffer pads are fixedly installed at the four corners of the bottom of the feed box.
[0008] In a preferred embodiment of this invention, the bottom of the inner wall of the storage area is inclined.
[0009] In the preferred embodiment of this utility model, the height of the guide plate is between 6-10cm, and the material of the guide plate is the same as that of the filter plate, both being high-strength, corrosion-resistant alloy materials.
[0010] In a preferred embodiment of this utility model, an insert plate is fixedly installed on one side of the filter plate, a slot matching the insert plate is provided on one side of the filter box, a pull strip plate is fixedly installed on the other end of the filter plate, one end of the pull strip plate slides through one side of the filter box and is fixedly installed with a handle, a strip-shaped hole matching the pull strip plate is provided on one side of the filter box, and the insert plate and the pull strip plate are symmetrically arranged on both sides of the filter plate.
[0011] In a preferred embodiment of this utility model, the bottom end of the guide plate slides in contact with the top end of the filter plate, and support strips are fixedly installed on both sides of the inner wall of the filter box, with the top end of the support strips slidably connected to the bottom end of the filter plate.
[0012] The beneficial effects of this utility model are:
[0013] Space utilization and equipment cost optimization: Abandoning the traditional multi-layer filter plate structure, a single-layer filter plate with different screening zones is adopted, which greatly simplifies the equipment structure, effectively reduces the space occupied by the equipment, lowers the equipment cost, makes the selection of equipment installation sites more flexible, and reduces the investment burden of enterprises.
[0014] Precise screening and efficient grading: The filter plate is equipped with three screening zones, and the mesh size of the filter screen in each zone gradually increases from near to far. Combined with the serpentine channel formed by the inclined filter plate and the guide plate, the silicon particles can move and be screened fully on the filter plate. This enables precise differentiation of silicon particles of various specifications, improves the screening effect and the accuracy of grading, and meets the strict requirements of different downstream products for silicon particle size.
[0015] Precise feed control: An electric flow regulating valve and a flow sensor are installed on the discharge pipe. The flow sensor monitors the feed flow in real time and feeds back to the flow regulating valve to achieve automated and precise feed control, avoid the accumulation of silicon particles on the filter plate, prevent screen blockage, and ensure the stability of screening efficiency and quality.
[0016] Auxiliary screening and vibration reduction functions: The vibration motor installed on one side of the filter box starts during the screening process, which can accelerate the movement speed of silicon particles, promote the screening process, and improve screening efficiency; the buffer pads fixed at the four corners of the bottom of the feed box can reduce the vibration impact of the vibration motor on the feed box when it is working, and ensure the stability of equipment operation.
[0017] Easy to collect and clean: The bottom of the inner wall of the storage area is inclined, which makes it easy for the silicon particles in the storage area to be discharged and collected smoothly from the first discharge port; the filter plate can be installed and removed by means of the insert plate, pull bar plate and handle. When it is necessary to clean or replace the filter plate, simply remove the bolts and pull the handle to remove the filter plate. The operation is simple and solves the problem of traditional equipment being difficult to disassemble and clean.
[0018] Extended service life: The guide plate and filter plate are made of high-strength, corrosion-resistant alloy material, and the bottom end of the guide plate slides in close contact with the top end of the filter plate. The support bars on both sides of the inner wall of the filter box slide in connection with the bottom end of the filter plate. This design not only ensures the stability of the equipment during the screening process, but also reduces wear between components and extends the service life of the equipment. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the structure of an industrial silicon particle screening and grading device provided by an embodiment of the present invention;
[0021] Figure 2 A top view of the filter box is provided for the embodiment of this utility model;
[0022] Figure 3 A schematic diagram of the internal structure of the filter box is provided for the embodiments of this utility model;
[0023] Figure 4 A schematic diagram showing the disassembled structure of the filter box and filter plate is provided for embodiments of this utility model.
[0024] In the diagram: 110-Filter box; 111-Filter plate; 112-Guide plate; 113-Baffle plate; 114-Insert plate; 115-Pull bar plate; 116-Handle; 120-Feed box; 121-Discharge pipe. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0026] Please see Figures 1-3 This utility model provides a technical solution: an industrial silicon particle screening and grading device, including a filter box 110 with an open top, a feed box 120 fixedly installed on one side of the top of the filter box 110, a discharge pipe 121 provided on one side of the bottom of the feed box 120, a filter plate 111 bolted inside the filter box 110, the filter plate 111 being divided into three screening sections, the mesh size of the filter screen in each screening section increasing from near to far from the discharge pipe 121, and the filter plate 111 being inclined, multiple guide plates 112 fixedly installed on both sides of the inner wall of the feed box 120, the guide plates 112 on both sides being staggered and forming a serpentine channel, a partition 113 fixedly installed on the bottom of the inner wall of the filter box 110, the partition 113 dividing the bottom of the filter box 110 into multiple storage areas corresponding to the screening sections, a first discharge port provided on one side of the storage area, a second discharge port provided on the other side of the filter box 110, and the bottom of the inner wall of the storage area being inclined.
[0027] In some specific implementations, a flow regulating valve is installed on the discharge pipe 121. This flow regulating valve is electrically operated and connected to a flow sensor, which is installed inside the discharge pipe 121. The flow sensor monitors the feed flow rate in real time and provides feedback to the flow regulating valve. This prevents silicon particles from accumulating on the filter plate 111, ensuring the continuity of the screening process and improving screening efficiency. Simultaneously, precise feed control ensures a relatively stable particle quantity for each screening, contributing to improved consistency and accuracy of the screening results.
[0028] In some specific implementations, a vibration motor is fixedly installed on one side of the filter box 110, and buffer pads are fixedly installed at the four corners of the bottom of the feed box 120. This can accelerate the movement speed of silicon particles on the filter plate 111 during screening, allowing the silicon particles to pass through different screening zones more quickly, thereby improving screening efficiency.
[0029] In some specific implementations, the height of the guide plate 112 is between 6-10 cm. The material of the guide plate 112 is the same as that of the filter plate 111, both being high-strength, corrosion-resistant alloy materials. The appropriate height ensures that the guide plate 112 can effectively guide the silicon particles to form a serpentine movement path, enhancing the screening effect.
[0030] Please see Figure 4 A plate 114 is fixedly installed on one side of the filter plate 111. A slot matching the plate 114 is provided on one side of the filter box 110. A pull strip plate 115 is fixedly installed on the other end of the filter plate 111. One end of the pull strip plate 115 slides through one side of the filter box 110 and is fixedly installed with a handle 116. A strip hole matching the pull strip plate 115 is provided on one side of the filter box 110. The plate 114 and the pull strip plate 115 are symmetrically arranged on both sides of the filter plate 111.
[0031] In some specific implementations, the bottom end of the guide plate 112 slides against the top end of the filter plate 111, and support strips are fixedly installed on both sides of the inner wall of the filter box 110, with the top end of the support strips slidably connected to the bottom end of the filter plate 111. This sliding connection method can not only ensure the effective support and guidance of the guide plate 112 and the support strips for the filter plate 111, but also facilitate the removal of the filter plate 111 from the equipment when it needs to be disassembled.
[0032] Working principle: During use, the silicon particles to be screened are poured into the feed box 120. The flow rate of the silicon particles is precisely controlled by the flow regulating valve to enter the filter box 110 and onto the filter plate 111. At the same time, the vibration motor is started to accelerate the movement of the silicon particles. The silicon particles move in a serpentine pattern on the filter plate 111 through the guide plate 112, filtering out smaller, medium, large, and extra-large silicon particles in sequence. The smaller, medium, and large silicon particles enter the storage area and are discharged and collected through the first outlet. The large silicon particles are directly collected by the chute at the second outlet. When the filter plate 111 needs to be cleaned or replaced, simply remove the fixing bolts and pull the handle 116 to move the filter plate 111 out through the pull strip 115.
[0033] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An industrial silicon particle screening and grading device, characterized in that, The filter includes a filter box with an open top. A feed box is fixedly installed on one side of the top of the filter box, and a discharge pipe is provided on one side of the bottom of the feed box. A filter plate is bolted inside the filter box. The filter plate is divided into three screening sections. The mesh size of the filter screen in each screening section increases from near to far from the discharge pipe, and the filter plate is inclined. Multiple guide plates are fixedly installed on both sides of the inner wall of the feed box. The guide plates on both sides are staggered and form a serpentine channel. A partition is fixedly installed on the bottom of the inner wall of the filter box. The partition divides the bottom of the filter box into multiple storage areas, which correspond one-to-one with the screening sections. A first discharge port is provided on one side of each storage area, and a second discharge port is provided on the other side of the filter box.
2. The industrial silicon particle screening and grading device according to claim 1, characterized in that, A flow regulating valve is installed on the discharge pipe. The flow regulating valve is an electric regulating valve and is connected to a flow sensor. The flow sensor is installed inside the discharge pipe.
3. The industrial silicon particle screening and grading device according to claim 1, characterized in that, A vibration motor is fixedly installed on one side of the filter box, and buffer pads are fixedly installed at the four corners of the bottom of the feed box.
4. The industrial silicon particle screening and grading device according to claim 1, characterized in that, The bottom of the inner wall of the storage area is inclined.
5. The industrial silicon particle screening and grading device according to claim 1, characterized in that, The height of the deflector is between 6 and 10 cm.
6. The industrial silicon particle screening and grading device according to claim 1, characterized in that, A plug plate is fixedly installed on one side of the filter plate, and a slot matching the plug plate is provided on one side of the filter box. A pull strip is fixedly installed on the other end of the filter plate, and one end of the pull strip slides through one side of the filter box and is fixedly installed with a handle.
7. The industrial silicon particle screening and grading device according to claim 1, characterized in that, The bottom end of the guide plate slides against the top end of the filter plate, and support strips are fixedly installed on both sides of the inner wall of the filter box, with the top end of the support strips slidably connected to the bottom end of the filter plate.