Silicon powder tank
By setting up a spiral diversion blade in the silicon powder tank, the problem of bridge formation during storage of silicon powder is solved, and the smooth flow and efficient discharge of silicon powder are achieved.
Patent Information
- Application Number
- CN202421570271.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-07-04
AI Technical Summary
Silicone powder is prone to bridge formation during storage, resulting in limited fluidity and inability to discharge normally, affecting production efficiency.
A spiral guide blade is provided in the silicon powder tank to promote the discharge of silicon powder and avoid the formation of bridge formation.
Through the spiral structure of the diversion blade, the fluidity of silicon powder is improved, the accumulation and bridge formation are avoided, and the smooth flow and efficient discharge of silicon powder are ensured.
Smart Images
Figure CN222808630U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of silicon powder storage equipment, in particular to a silicon powder tank. Background Art
[0002] The silicon powder tank is used to store silicon powder. The silicon powder tank has a feed port and a discharge port. The silicon powder is transported to the silicon powder tank through the feed port for storage. Since silicon powder is a fine, dry and moisture-sensitive substance, and the silicon powder tank usually has sealing, moisture-proof and anti-pollution properties, it can effectively protect the silicon powder from interference and damage by external factors, thereby ensuring the quality and performance of the silicon powder.
[0003] For silicon powder stored in a silicon powder tank, when the silicon powder is needed, the switch of the discharge port on the silicon powder tank needs to be opened to discharge the silicon powder in the silicon powder tank. However, due to the small particle size of the silicon powder, when stored in the silicon powder tank, the van der Waals force between the silicon powder particles will cause the silicon powder to form bridges in the silicon powder tank, which limits the fluidity of the silicon powder in the silicon powder tank and causes a large amount of silicon powder to accumulate in the silicon powder tank and cannot be discharged normally. This not only hinders the smooth flow of the silicon powder, but also requires frequent manual interruptions due to the formation of bridges, affecting production efficiency. Utility Model Content
[0004] The utility model provides a silicon powder tank to solve the problem of bridging when silicon powder is stored in the silicon powder tank. A spiral structure is arranged in the silicon powder tank to promote the discharge of silicon powder and avoid the silicon powder bridging phenomenon in the silicon powder tank to affect the discharge of silicon powder.
[0005] The technical solution adopted by the utility model is:
[0006] A tank body, a feed port is provided on the top of the tank body, a connected cone is provided at the bottom of the tank body, and a discharge port is provided at the bottom of the cone; a guide blade, the guide blade is spiral-shaped as a whole, the guide blade is arranged on the inner wall of the cone, and the bottom of the guide blade extends toward the discharge port; a discharge channel is provided between the guide blade and the inner wall of the cone, and the discharge channel is connected to the tank body and the discharge port; wherein the connecting line between the guide blade and the cone is consistent with the spiral line at the two end points of the guide blade.
[0007] In some embodiments of the present invention, the bottom of the guide vane extends to the discharge port, and the guide vane divides the discharge port into two.
[0008] In some embodiments of the present invention, the angles between different supporting surfaces of the guide vane and the horizontal plane gradually increase from top to bottom along the axis direction of the cone.
[0009] In some embodiments of the present invention, the bevel angle of the cone is 30°-55°.
[0010] In some embodiments of the present invention, the top of the guide vane has a rounded corner.
[0011] In some embodiments of the present invention, the top length of the guide vane is the same as the top inner diameter of the cone.
[0012] In some embodiments of the present invention, the guide vane is a manganese 16 steel plate.
[0013] The beneficial effects of the utility model are:
[0014] 1. Open the feed port, close the discharge port, and pass the silicon powder into the tank through the feed port. Since the discharge port is closed, the silicon powder will gradually accumulate in the discharge channel in the cone, and the silicon powder on the guide blade will fall along the guide blade. When the silicon powder in the tank and the cone needs to be discharged, open the discharge port, and the silicon powder at the bottom of the cone will begin to be discharged outward through the discharge port. At this time, the silicon powder leaning on the guide blade slides along the guide blade under the influence of its own gravity and the repose angle formed on the support surface of the guide blade, avoiding the phenomenon of silicon powder bridging;
[0015] 2. The guide blades are arranged in a spiral shape, so that the silicon powder can be continuously turned along the spiral guide blades during the movement, that is, the guide blades can enhance the guiding effect on the silicon powder and prevent the silicon powder from local accumulation. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0017] Figure 1 This is the front view of the silicon powder tank;
[0018] Figure 2 It is a schematic diagram of the structure of the silicon powder tank;
[0019] Figure 3 It is a top view of the cone in the silicon powder tank;
[0020] Figure 4 This is a bottom view of the silicon powder tank;
[0021] Figure 5 This is a three-dimensional image of a silicon powder tank.
[0022] Reference numerals:
[0023] 1-tank body, 2-cone cylinder, 20-guide vane, 21-discharge channel, 3-feed port, 4-discharge port. DETAILED DESCRIPTION
[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.
[0025] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention.
[0026] The embodiments of the utility model are described in detail below with reference to the accompanying drawings.
[0027] Example
[0028] like Figure 1-3 As shown, this embodiment provides a silicon powder tank, including:
[0029] A tank body 1, a feed inlet 3 is provided at the top of the tank body 1, a connected cone 2 is provided at the bottom of the tank body 1, and a discharge port 4 is provided at the bottom of the cone 2;
[0030] The guide blade 20 is spiral in shape as a whole, and is arranged on the inner wall of the cone 2, and the bottom of the guide blade 20 extends toward the discharge port 4; a discharge flow channel 21 is provided between the guide blade 20 and the inner wall of the cone 2, and the discharge flow channel 21 is connected to the tank body 1 and the discharge port 4;
[0031] The connecting line between the guide vane 20 and the cone 2 is consistent with the spiral lines at both end points of the guide vane 20 .
[0032] The part of the silicon powder tank used to store silicon powder is divided into two parts, one part is a tank body 1 with a rectangular cross section and a curved surface on the top, and the other part is a cone 2 with a conical cross section. One end of the cone 2 matches the size of the tank body 1, which can realize the internal connection between the tank body 1 and the cone 2. It is worth noting that in this embodiment, the tank body 1 and the cone 2 are an integrated structure. A feed port 3 connected to the inside of the tank body 1 is opened at the top of the tank body 1, and a discharge port 4 connected to the inside of the cone 2 is opened at the bottom of the cone 2, that is, silicon powder can enter from the feed port 3 of the tank body 1, and finally be discharged through the discharge port 4 opened on the cone 2. During the feeding and discharging process of silicon powder, a guide vane 20 is arranged inside the cone 2. The guide vane 20 is used to guide the flow of silicon powder. The guide vane 20 is spiral in shape as a whole. The top of the guide vane 20 is located at the connection between the cone 2 and the tank body 1, and the bottom is close to the discharge port 4 of the cone 2. The bottom of the guide vane 20 does not fit the inner wall of the cone 2, that is, there is a gap between the bottom of the guide vane 20 and the inner wall of the cone 2, and the gap enables the silicon powder to pass through and be discharged from the discharge port 4. Take the cross section of the connection between the cone 2 and the tank body 1 as a top view, the two ends where the top of the guide vane 20 is connected to the cone 2 are respectively taken as point a and point b, and in the process to the bottom of the guide vane 20, the position trajectory where the side wall of the guide vane 20 is connected to the inner wall of the cone 2 is taken as curve c, which is actually the spiral line of points a and b, that is, curve c coincides with the spiral lines of points a and b. In the present utility model, curve c is not an equidistant spiral in the spiral line, but a constant speed spiral. The spiral guide vane 20 has a discharge channel 21 between itself and the cone 2 that is connected to the inside of the tank body 1. There are two discharge channels 21, which are distributed at both ends of the guide vane 20. The discharge channel 21 is used for the circulation of silicon powder.
[0033] When the feed port 3 is opened and the discharge port 4 is closed, the tank body 1 and the cone cylinder 2 are used to store silicon powder. The silicon powder is accumulated toward the inside of the tank body 1 and the cone cylinder 2 through the feed port 3. The silicon powder that falls on the guide blade 20 will move along the spiral direction of the guide blade 20 to fill the unfilled space in the discharge channel 21. When the silicon powder flows on the guide blade 20, the angle of repose formed by the guide blade 20 and the supporting surface of the silicon powder and the silicon powder will gradually increase. As the angle of repose increases, the fluidity of the silicon powder will also increase, thereby avoiding the situation where the silicon powder bridges in the tank body 1 and the cone cylinder 2; when the feed port 3 is closed and the discharge port 4 is opened At this time, the silicon powder near the discharge port 4 will be in a state of equilibrium and its state will be broken, causing the silicon powder to run out of the discharge port 4 of the cone 2 one after another. The silicon powder that runs out will drive the silicon powder that loses its equilibrium state to flow out together. For the silicon powder in equilibrium on the guide blade 20, as the guide blade 20 is closer to the discharge port 4, the repose angle between the silicon powder and the support surface of the guide blade 20 will increase, thereby improving the fluidity of the silicon powder. In addition, the discharge channel formed between the spiral guide blade 20 and the cone 2 can enhance the guiding effect on the silicon powder, so that the silicon powder is constantly turned over in the process of following the guide blade 20 to descend, thereby preventing local accumulation.
[0034] Further, such as Figure 4 As shown, the bottom of the guide vane 20 extends to the discharge port 4, and the guide vane 20 divides the discharge port 4 into two.
[0035] One end of the top of the guide vane 20 is arranged on the opposite inner wall of the cone 2, and the other end, that is, the bottom, extends in a spiral shape toward the discharge port 4 of the cone 2. The bottom of the guide vane 20 may intersect with the cross section at the discharge port 4, or may not intersect. When they do not intersect, the bottom of the guide vane 20 extends to the top of the discharge port 4 and intersects with the inner side wall of the cone 2 close to the discharge port 4. After the discharge port 4 is closed, there is a certain gap between the bottom of the guide vane 20 and the discharge port 4, and the gap connects the discharge channels 21 at both ends of the guide vane 20, and it is worth noting that When the bottom of the guide blade 20 does not extend into the discharge port 4, the bottom of the guide blade 20 in the cone cylinder 2 will not be connected to the inner wall of the cone cylinder 2, avoiding one of the discharge channels 21 from being blocked; when the bottom of the guide blade 20 and the cross-section of the discharge port 4 intersect, the guide blade 20 at this time divides the discharge port 4 on the cone cylinder 2 into two, becoming two discharge ports 4, and each discharge port 4 is respectively connected to one of the discharge channels 21, that is, the two discharge ports 4 are used in conjunction with the two discharge channels 21, so as to facilitate the discharge of the silicon powder stored in the cone cylinder 2 and the tank body 1.
[0036] When in use, the bottom of the guide blade 20 extends to the discharge port 4 of the cone cylinder 2, dividing the discharge port 4 into two, and the two discharge ports 4 are connected to the two discharge channels 21 in a one-to-one correspondence, so as to facilitate the discharge of the silicon powder in the discharge channels 21 at both ends of the guide blade 20 from the cone cylinder 2. If the bottom of the guide blade 20 extends to the inner wall of the cone cylinder 2 close to the discharge port 4, there will be only one discharge port, and the silicon powder in the discharge channel 21 at one end of the guide blade 20 will be blocked by the bottom of the guide blade 20 when being discharged, so that the discharge of the silicon powder is blocked.
[0037] Further, such as Figure 2 and Figure 3 As shown, the angles between different supporting surfaces of the guide vane 20 and the horizontal plane gradually increase from top to bottom along the axial direction of the cone 2.
[0038] The guide blade 20 is spiral-shaped. When the silicon powder in the cone 2 is fully accumulated, the silicon powder near the guide blade 20 will contact the support surface of the guide blade 20. As the silicon powder on the guide blade 20 moves in the flow direction, when the silicon powder is in a balanced state on the support surface of the guide blade 20, the minimum angle between the guide blade 20 and the horizontal plane, that is, the angle of repose, will gradually increase. The gradual increase in the angle of repose makes the flowability of the silicon powder on the guide blade 20 higher. The silicon powder near the discharge port 4 of the cone 2 cannot reach equilibrium on the guide blade 20 due to the increase in the angle of repose, and will Under the premise that the outlet 4 is closed and the cone 2 is filled with silicon powder, the forces between the silicon powder particles reach a state of equilibrium. When the discharge port 4 on the cone 2 is opened, the equilibrium state between the silicon powder particles close to the discharge port 4 is broken, and the silicon powder will be discharged toward the discharge port 4 under the action of its own gravity, making it impossible for the silicon powder particles in the cone 2 to maintain a state of equilibrium. When the silicon powder near the top flows in the discharge channel 21, as the repose angle increases when it contacts the guide blades 20, its own fluidity is improved, thereby avoiding the silicon powder accumulation inside the cone 2 and the occurrence of bridging.
[0039] During use, when the silicon powder in the cone 2 is full, the discharge port 4 is opened to allow the silicon powder near the discharge port 4 to flow out, and the silicon powder above the discharge port 4 is broken in equilibrium and moves toward the discharge port 4. During the movement, the angle of repose between the silicon powder on the guide blade 20 and the guide blade 20 will increase, and as the silicon powder moves, the angle of repose increases, thereby achieving the effect of improving the fluidity of the silicon powder; when the silicon powder is filling the inside of the cone 2, the silicon powder will contact the supporting surface of the guide blade 20, and the silicon powder hiding on the top of the guide blade 20 will slowly move toward the discharge port 4 of the cone 2 to fill the idle discharge flow channel 21. During the movement of the silicon powder, the angle of repose between the support surface of the guide blade 20 increases, thereby improving its own fluidity, thereby avoiding the situation where the silicon powder bridges the inside of the cone 2 and the tank body 1 and affects the production efficiency.
[0040] Further, such as Figure 2 and Figure 5 As shown, the oblique angle of the cone 2 is 30°-55°.
[0041] The bevel angle of the cone 2 is the angle between the central axis of the cone 2 and the side wall of the cone 2, and the angle range is 30°-55°. The discharge port 4 of the cone 2 is within this angle range, so that the silicon powder has a certain repose angle on the side wall of the cone 2, which is beneficial to prevent the silicon powder from accumulating on the side wall of the cone 2, and can make the silicon powder roll on the side wall of the cone 2, thereby improving the fluidity of the silicon powder.
[0042] Furthermore, the top of the guide vane 20 has a rounded corner.
[0043] The top position of the guide blade 20 facing the feed port 3 is chamfered. After the silicon powder enters from the feed port 3 of the tank body 1, since the guide blade 20 has a certain width, if the top of the guide blade 20 is relatively flat, it will cause silicon powder to accumulate, affecting the discharge of the silicon powder in the tank body 1. Chamfering the top plane of the guide blade 20 can avoid the accumulation of silicon powder on the top of the guide blade 20. Even if the silicon powder in the tank body 1 is stored at a higher height than the guide blade 20, resulting in silicon powder accumulation on the top of the guide blade 20, after the discharge port 4 at the bottom of the cone 2 is opened and a certain amount of silicon powder is discharged, the silicon powder accumulated on the guide blade 20 will fall off due to the chamfering of the top of the guide blade 20, so that silicon powder will not accumulate on the top of the guide blade 20.
[0044] Further, such as Figure 3 As shown, the top length of the guide vane 20 is the same as the top inner diameter of the cone 2 .
[0045] The direction of the guide blade 20 from top to bottom toward the discharge port 4 is used as the height direction of the guide blade 20, and the part where the guide blade 20 intersects with the cross section of the cone barrel is used as the length direction of the guide blade 20. Since the guide blade 20 is spiral, when the guide blade 20 changes along the height direction, the length of the guide blade 20 will also change. In the utility model, the intersection of the guide blade 20 and the cross section of the cone cylinder 2 is the same as the diameter of the circle formed by the cross section of the cone cylinder 2, so that the discharge flow channel 21 formed between the two ends of the spiral guide blade 20 and the cone cylinder 2 is the same size. When the length of the top of the guide blade 20 is in the same plane as the cross section of the cone cylinder 2, if the length of the top of the guide blade 20 at this time is not equal to the diameter of the circle formed by the cross section of the cone cylinder 2 at this point, the discharge flow channels 21 at both ends of the guide blade 20 will be different in size. The discharge flow channel 21 with a larger space on one side of the guide blade 20 will increase the material consumption of the guide blade 20, while the discharge flow channel 21 with a smaller space on the other side will reduce the material consumption. However, when silicon powder is transported in the discharge flow channel 21 on the side with a smaller space, it is easy to cause blockage.
[0046] Furthermore, the guide vane 20 is a manganese 16 steel plate.
[0047] When in use, the material of the guide vane 20 is selected as manganese 16 steel plate. The manganese 16 steel plate has good comprehensive mechanical properties, and has good weldability, cold and hot processing properties and corrosion resistance. Since the silicon powder enters the cone cylinder 2 for storage and is discharged from the cone cylinder 2, the silicon powder will frequently and repeatedly contact and slide on the guide vane 20, which will cause abrasion of the guide vane 20. Therefore, if the guide vane 20 is made of manganese 16 steel plate, it can use its own corrosion resistance to cope with the abrasion loss caused by the silicon powder.
[0048] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. In the absence of conflicts, the embodiments of the present application and the features in the embodiments may be arbitrarily combined with each other. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A silicon powder tank, characterized in that: include: A tank body, wherein a feed port is provided at the top of the tank body, a connected cone is provided at the bottom of the tank body, and a discharge port is provided at the bottom of the cone; a guide blade, wherein the guide blade is spiral-shaped as a whole, the guide blade is arranged on the inner wall of the cone, and the bottom of the guide blade extends toward the discharge port; a discharge channel is provided between the guide blade and the inner wall of the cone, and the discharge channel is connected with the tank body and the discharge port; wherein the connecting line between the guide blade and the cone is consistent with the spiral line at the two end points of the guide blade.
2. The silicon powder tank according to claim 1, characterized in that: The bottom of the guide vane extends to the discharge port, and the guide vane divides the discharge port into two.
3. The silicon powder tank according to claim 1 or 2, characterized in that: The angles between different supporting surfaces of the guide vanes and the horizontal plane gradually increase from top to bottom along the axis direction of the cone.
4. The silicon powder tank according to claim 3, characterized in that: The oblique angle of the cone is 30°-55°.
5. The silicon powder tank according to claim 4, characterized in that: The top of the guide vane is rounded.
6. The silicon powder tank according to claim 5, characterized in that: The top length of the guide vane is the same as the top inner diameter of the cone.
7. The silicon powder tank according to claim 6, characterized in that: The guide vanes are made of manganese 16 steel plates.