Flower basket for cleaning polycrystalline silicon blocks and cleaning system

Abstract

The utility model discloses a flower basket for cleaning polycrystalline silicon blocks and a cleaning system. The flower basket comprises a flower basket outer frame and a plurality of flower basket inner frames, the top of the flower basket outer frame is open, and a plurality of first openings are formed in the side and bottom frame plates of the flower basket outer frame; a plurality of groups of rails are arranged on the inner side of the basket outer frame, the rails are respectively positioned at different heights of the basket outer frame, the basket inner frames are respectively arranged on the rails, and a plurality of second open holes are formed in frame plates of the basket inner frames; moreover, lifting mechanisms are arranged on two opposite side frame plates of the basket outer frame and used for driving the basket to ascend and descend, so that one side of the basket ascends while the other side of the basket descends in the cleaning process. The silicon block cleaning device can reduce accumulation of silicon blocks, increase the cleaning area and achieve all-directional cleaning.

Description

Technical Field

[0001] The present invention relates to the technical field of polysilicon, and in particular to a flower basket and a cleaning system for cleaning polysilicon blocks. Background Art

[0002] In the process of producing polysilicon using the modified Siemens method, the silicon block cleaning process is a key step in controlling the surface cleanliness of the polysilicon blocks, and the cleaning basket is an important device for cleaning the silicon blocks. Most of the existing polysilicon cleaning baskets are rectangular box-shaped. During the cleaning process of the polysilicon blocks, all the silicon materials are placed in a basket and sent to the cleaning machine for cleaning. However, the silicon blocks carried by this type of cleaning basket basically remain in the same position throughout the cleaning process, so that there are a large number of "dead corners" in the parts where the silicon blocks contact each other and in the parts where the silicon blocks contact the basket, resulting in problems such as incomplete and uneven cleaning. In addition, when the materials are unloaded after cleaning, the silicon materials in the basket need to be manually shoveled out and bagged, which wastes a lot of manpower. At the same time, due to excessive human intervention, the risk of introducing contamination is increased. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art and provide a flower basket and a cleaning system for cleaning polysilicon blocks, which can reduce the accumulation of silicon blocks, increase the cleaning area, and achieve all-round cleaning.

[0004] The technical solution of the present invention to solve the above technical problems is:

[0005] According to a first aspect of the present invention, there is provided a flower basket for cleaning polysilicon chunks, comprising an outer flower basket frame and a plurality of inner flower basket frames, wherein:

[0006] The top of the flower basket outer frame is open, and a plurality of first openings are provided on the side and bottom frame plates thereof;

[0007] A plurality of rails are provided on the inner side of the outer frame of the flower basket. Each rail is located at a different height of the outer frame of the flower basket. Each inner frame of the flower basket is provided on each rail. A plurality of second openings are provided on the frame plate of the inner frame of the flower basket.

[0008] In addition, two opposite side frame plates of the flower basket outer frame are provided with lifting mechanisms for driving the flower basket to perform lifting movements, so that one side of the flower basket rises while the other side falls during the cleaning process.

[0009] Optionally, the outer frame and the inner frame of the flower basket are both rectangular structures as a whole, and the track is transversely arranged on the inner side of the front and rear frame plates.

[0010] Optionally, the track is a foldable track, which includes a first component and a second component. The first component is arranged on the inner side of the front and rear frame plates of the flower basket outer frame, and the second component is superimposed on the outer side of the first component. When in use, it is unfolded at a vertical angle to the frame plate.

[0011] Optionally, a slide rail is provided on the second component, and a roller is provided on the inner frame of the flower basket, and the roller is adapted to the slide rail.

[0012] Optionally, limit blocks are provided at both ends of the track.

[0013] Optionally, support frames are provided at the four corners of the inner side of the flower basket outer frame for fixing the first component.

[0014] Optionally, the left and right side frame panels of the flower basket outer frame both include an upper panel, a middle hollow structure and a lower support structure, and the lifting mechanism includes a driving device and a folding lifting rod. The folding lifting rod is arranged in the middle hollow structure between the upper panel and the lower support structure, and the top end of the folding lifting rod is connected to the upper panel, and the bottom end of the folding lifting rod is connected to the lower support structure. The driving device is connected to the folding lifting rod for controlling the extension and retraction of the folding lifting rod. When the folding extension rod is extended, the lower support structure extends from the middle hollow structure to raise the upper panel. When the folding lifting rod is retracted, the upper panel descends and the lower support structure retracts into the middle hollow structure.

[0015] Optionally, the left side frame plate and / or the right side frame plate of the inner frame of the flower basket is a movable structure, which is detachably connected to the adjacent frame plates to achieve closing and opening of the side frame plates.

[0016] Optionally, a plug-in hole is provided on the left side and / or right side of the inner frame of the flower basket, and the left frame plate and / or the right frame plate are detachably connected to the adjacent frame plates through the plug-in hole.

[0017] Optionally, a rotating rod is provided at the top of the left side and / or right side of the inner frame of the flower basket, and a frame plate opening and closing locking device is provided at the bottom of the side. The left frame plate and / or the right frame plate are connected to the rotating rod and are detachably connected to the adjacent frame plates through the rotating rod.

[0018] Optionally, a roller blind structure is provided on the left side and / or right side of the inner frame of the flower basket, and the left frame plate and / or the right frame plate are detachably connected to the adjacent frame plates via the roller blind structure.

[0019] Optionally, the outer sides of the flower basket outer frame are respectively provided with hanging ears.

[0020] According to a second aspect of the present invention, a cleaning system is provided, comprising a cleaning tank and a cleaning flower basket, wherein the cleaning flower basket is the flower basket described above.

[0021] The flower basket and cleaning system for cleaning polysilicon blocks of the present invention have the following features:

[0022] Beneficial effects:

[0023] (1) Through the layered design, the accumulation of polysilicon blocks in the inner frame of the flower basket can be reduced, the cleaning area can be increased, and it can be disassembled and used easily;

[0024] (2) By setting up a lifting mechanism, the polysilicon blocks in the inner frame of the flower basket can be moved continuously, thereby reducing the accumulation of silicon blocks, exposing more cleanable area, and achieving all-round cleaning;

[0025] (3) By setting rollers, it has a movable function, which is convenient for transportation after disassembly and reduces manpower waste;

[0026] (4) The left and / or right frame plates of the inner frame of the flower basket adopt a movable structural design, which allows the clean silicon material to be poured directly into the packaging bag after cleaning, reducing manual contact and reducing the introduction of pollution sources. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of a flower basket for cleaning polysilicon blocks in an embodiment of the present invention;

[0028] Figure 2 This is a perspective view of the overall structure of a flower basket for cleaning polysilicon blocks in an embodiment of the present invention;

[0029] Figure 3 Schematic diagram of the structure of the left frame plate or the right frame plate of the flower basket outer frame in an embodiment of the present invention;

[0030] Figure 4 is a schematic diagram of an inner frame of a flower basket in an embodiment of the present invention;

[0031] Figure 5 is a schematic diagram of a folding track in an embodiment of the present invention;

[0032] Figure 6 Schematic diagram of a pluggable right side frame plate of a flower basket inner frame in an embodiment of the present invention;

[0033] Figure 7 Schematic diagram of a rotatable right side frame plate of a flower basket inner frame in an embodiment of the present invention;

[0034] Figure 8 Schematic diagram of a liftable right side frame plate of a flower basket inner frame in an embodiment of the present invention;

[0035] Figure 9 Schematic diagram of the lifting movement of the flower basket in an embodiment of the present invention.

[0036] In the figure: 1. Flower basket outer frame; 2. Flower basket inner frame; 3. First opening; 4. Track; 41. First assembly; 42. Second assembly; 5. Slide rail; 6. Limit block; 7. Support frame; 8. Hanging ear; 9. Middle hollow structure; 10. Lifting rod; 11. Lower support structure; 12. Drive device; 13. Roller; 14. Second opening; 15. Plug-in channel;

[0037] 16. Rotating rod; 17. Frame opening and closing locking device; 18. Rolling shutter structure; 19. Polycrystalline silicon block. DETAILED DESCRIPTION

[0038] To help those skilled in the art better understand the technical solutions of the present invention, the following will provide a clear and complete description of the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present invention.

[0039] In view of the problems of incomplete and uneven cleaning of polycrystalline silicon blocks in the prior art, the present invention provides a flower basket for cleaning polycrystalline silicon blocks, comprising a flower basket outer frame and a plurality of flower basket inner frames, wherein:

[0040] The top of the flower basket outer frame is open, and a plurality of first openings are provided on the side and bottom frame plates thereof;

[0041] A plurality of rails are provided on the inner side of the outer frame of the flower basket. Each rail is located at a different height of the outer frame of the flower basket. Each inner frame of the flower basket is provided on each rail. A plurality of second openings are provided on the frame plate of the inner frame of the flower basket.

[0042] In addition, two opposite side frame plates of the flower basket outer frame are provided with lifting mechanisms for driving the flower basket to perform lifting movements, so that one side of the flower basket rises while the other side falls during the cleaning process.

[0043] Furthermore, the present invention also provides a cleaning system, including a cleaning pool and a cleaning flower basket, and the cleaning flower basket adopts the flower basket described above.

[0044] Example 1

[0045] like Figures 1-9As shown, this embodiment discloses a flower basket for cleaning polycrystalline silicon blocks, including a flower basket outer frame 1 and a plurality of flower basket inner frames 2. The top of the flower basket outer frame 1 is open to facilitate the placement of the flower basket inner frames 2 and polycrystalline silicon blocks 19. The side and bottom frame plates of the flower basket outer frame 1 are provided with a plurality of first openings 3 for circulating a cleaning liquid. The inner side of the flower basket outer frame 1 is provided with a plurality of groups of tracks 4, each group of tracks 4 is located at a different height of the flower basket outer frame 1, and each flower basket inner frame 2 is separately arranged on each group of tracks 4, that is, a layered design is adopted, with multiple layers of flower basket inner frames 2. The frame plates of the flower basket inner frames 2 are provided with a plurality of second openings 14 for circulating a cleaning liquid. In addition, two opposite side frame plates of the flower basket outer frame 1 are provided with a lifting mechanism, which is used to drive the flower basket to perform a lifting movement, so that one side of the flower basket rises while the other side falls during the cleaning process.

[0046] Compared with the prior art, since rails are provided at different heights on the inner side of the flower basket outer frame of this embodiment, multiple layers of flower basket inner frames can be placed, that is, a layered design is adopted, which can reduce the accumulation of polysilicon blocks in the flower basket inner frame, increase the cleaning area, and is detachable and easy to use; at the same time, since a lifting mechanism is provided, under the action of gravity, the flower basket will fall to the falling side, and the polysilicon blocks in the flower basket inner frame will slide to the falling side accordingly. The lifting and falling of the lifting mechanisms on both sides of the flower basket can be cyclically alternated, so that the polysilicon blocks in the flower basket inner frame can be continuously moved, thereby reducing the accumulation of silicon blocks, exposing more cleanable area, achieving all-round cleaning, and solving the problems of incomplete and uneven cleaning in the prior art.

[0047] Specifically, the flower basket outer frame 1 and the flower basket inner frame 2 are both rectangular structures as a whole, and their front, back, left, right and bottom frame plates are all rectangular. All frame plates of the flower basket outer frame 1 are fixedly closed and connected, and the track 4 is horizontally arranged on the inner side of the front and back frame plates.

[0048] The length of the inner frame 2 of the flower basket is 5 to 8 cm shorter than the length of the outer frame 1 of the flower basket, and the width of the inner frame 2 is 2 to 4 cm shorter than the width of the outer frame 1 of the flower basket; the height of the inner frame 2 of the flower basket is 1 / 8 to 1 / 5 cm of the height of the outer frame 1 of the flower basket; the distance between the upper and lower layers of the inner frames 2 of the flower basket is 3 to 7 cm, preferably 5 cm.

[0049] The first opening 3 is a rectangular hole with a length of 5 to 8 cm and a width of 0.8 to 1.5 cm, but not limited thereto; the second opening 14 is a 'Piece-shaped' hole.

[0050] The number of the rails 4 is preferably 2 to 4 groups, which can accommodate 2 to 4 layers of flower basket inner frames 2, but is not limited thereto. Each group of rails 4 is laterally symmetrically mounted on the inner side of the front and rear frame plates.

[0051] In some embodiments, the track 4 is a foldable track, which includes a first component 41 and a second component 42. The first component 41 is arranged on the inner side of the front and rear frame plates of the flower basket outer frame 1, and the second component 42 is connected to the outer side of the first component 41. When folded, it is overlapped with the outer side of the first component 41, and when used, it is unfolded at a vertical angle to the frame plate.

[0052] In some embodiments, support frames 7 are provided at the four corners of the inner side of the flower basket outer frame 1 for fixing the first component to improve stability.

[0053] In some embodiments, a slide rail 5 is provided on the second component 42, and a plurality of pairs of rollers 13 are provided on the inner frame 2 of the flower basket. The rollers 13 are adapted to the slide rail 5 to facilitate transportation after disassembly and reduce manpower waste.

[0054] In this embodiment, the slide rail 5 is preferably an arc-shaped protrusion, and the number of the rollers 13 is 2 to 4 pairs, but is not limited thereto.

[0055] In some embodiments, limit blocks 6 are provided at 2 to 5 cm inwards from both ends of the track 4 for clamping the inner frame of the flower basket.

[0056] In some embodiments, the left and right side frame plates of the flower basket outer frame 1 each include an upper plate surface, a middle hollow structure 9, and a lower support structure 11. The lifting mechanism includes a drive device 12 (including a controller) and a foldable lifting rod 10, wherein:

[0057] The thickness of the lower support structure 11 is less than the thickness of the upper plate and the middle hollow structure 9. For example, it can be one-third of the thickness of the upper plate and the middle hollow structure 9. The foldable lifting rod 10 is arranged in the middle hollow structure 9 between the upper plate and the lower support structure, and the top end of the foldable lifting rod 10 is connected to the upper plate, and the bottom end of the foldable lifting rod 10 is connected to the lower support structure 11. The drive device 12 is connected to the foldable lifting rod 10 and is used to control the extension and retraction of the foldable lifting rod;

[0058] When the foldable telescopic rod 10 is extended, the lower supporting structure 11 extends from the middle hollow structure 9 to raise the upper panel. When the foldable lifting rod 10 is retracted, the upper panel descends and the lower supporting structure 11 retracts into the middle hollow structure 9.

[0059] In some embodiments, the exterior of the foldable lifter 10 (particularly the joint between it and the drive unit 12) and the roller 13, which come into contact with the acid solution, are made of a clean polyfluorinated material (e.g., polytetrafluoroethylene) or coated with a polyfluorinated material. The maximum allowable tolerance for processing the polyfluorinated material is no more than 5%, and the surface roughness Ra is ≤ 0.1 μm. The polyfluorinated material not only has a certain mechanical strength but also is resistant to highly concentrated, strongly oxidizing acids and bases, thus preventing corrosion from acid (from the cleaning fluid).

[0060] In some embodiments, the left and / or right side panels of the inner frame 2 of the flower basket are movable, detachably connected to adjacent panels to allow for the closing and opening of these side panels. The remaining panels are fixedly connected. After cleaning, the left and / or right side panels of the inner frame 2 of the flower basket are opened to directly pour the silicon material into the packaging bag, minimizing contact with the silicon wafers during manual shoveling and reducing the introduction of contaminants.

[0061] Specifically, the movable structure can be a pluggable structure: Figure 6 As shown, a plug-in channel 15 is provided on the left and / or right side of the inner frame 2 of the flower basket, and the left frame plate and / or the right frame plate are detachably connected to the adjacent frame plate through the plug-in channel, so that the closing and opening of the left frame plate and / or the right frame plate of the inner frame of the flower basket can be achieved in a plug-in manner.

[0062] The movable structure may also be a rotatable structure: Figure 7 As shown, a rotating rod 16 is provided at the top of the left and / or right side of the flower basket inner frame 2, and a frame plate opening and closing locking device 17 is provided at the bottom of the side. The left frame plate and / or the right frame plate are connected to the rotating rod and are detachably connected to the adjacent frame plates through the rotating rod. The left frame plate and / or the right frame plate are locked by the plate-frame opening and closing locking device to achieve the closure of the left frame plate and / or the right frame plate of the flower basket inner frame. The left frame plate and / or the right frame plate can be folded at the top of the flower basket inner frame by the rotating rod to achieve the opening of the left frame plate and / or the right frame plate of the flower basket inner frame.

[0063] The movable structure can also be a liftable structure: Figure 8 As shown, a roller shutter structure 18 is provided on the left and / or right side of the inner frame 2 of the flower basket. The left frame plate and / or the right frame plate are detachably connected to the adjacent frame plate through the roller shutter structure. By rolling up and lowering the left frame plate and / or the right frame plate, the closing and opening of the left frame plate and / or the right frame plate of the inner frame of the flower basket are achieved.

[0064] In some embodiments, the outer side of the flower basket outer frame 1 (preferably the outer top ends of the left and right side frame plates are 1 to 2 cm away from the top of the flower basket) are respectively provided with hanging ears 8 to facilitate hanging and unloading the flower basket.

[0065] The following uses a batch of polysilicon carbon head materials as an example to describe the use of the flower basket of this embodiment in detail, as follows:

[0066] During cleaning, first, install the flower basket, extend the foldable lifting rods 10 in the lifting mechanism on the left and right side frame plates of the flower basket outer frame 1, and prop up the flower basket outer frame so that it is about 2 cm away from the loading platform of the cleaning machine; then, load the silicon material, and determine the number of flower basket inner frames 2 according to the amount of cleaning material. When multiple flower basket inner frames 2 are needed, first unfold the bottom foldable track 4 on the front and rear frame plates inside the flower basket outer frame 1 and place the flower basket inner frame 2 and polycrystalline silicon carbon head materials, then unfold the top foldable track 4 and place the flower basket inner frame and polycrystalline silicon carbon head materials, and so on. The polycrystalline silicon carbon head materials in each layer of the flower basket inner frame 2 occupy 100% of the flower basket inner frame. After loading is completed, the flower basket is transported to the cleaning tank of the first cleaning process through the track of the cleaning machine loading platform for cleaning. The foldable lifting rod 10 is controlled to drive the two sides of the flower basket to move up and down. When one side rises, the other side falls. The time of each lifting is controlled within 5 to 10 seconds. The cycle is alternated so that the polycrystalline silicon wafers in the inner frame of the flower basket slide back and forth between the two sides continuously, reducing the accumulation of silicon wafers and exposing more cleanable area. After the first cleaning process is completed, the robot arm hooks the hanging ear of the outer frame of the flower basket to transport the flower basket to the next cleaning process. And so on, the cleaning is directly completed.

[0067] After cleaning is completed, the flower basket is removed from the cleaning tank and sent to the loading platform. The flower basket inner frame 2 is lifted out of the flower basket outer frame 1, and the left or right frame plate of the flower basket inner frame 2 is opened, and the clean silicon wafers are directly poured into the packaging bag.

[0068] In summary, the flower basket for cleaning polysilicon blocks of this embodiment has the following beneficial effects:

[0069] (1) Through the layered design, the accumulation of polysilicon blocks in the inner frame of the flower basket can be reduced, the cleaning area can be increased, and it can be disassembled and used easily;

[0070] (2) By setting up a lifting mechanism, the polysilicon blocks in the inner frame of the flower basket can be moved continuously, thereby reducing the accumulation of silicon blocks, exposing more cleanable area, and achieving all-round cleaning;

[0071] (3) By setting rollers, it has a movable function, which is convenient for transportation after disassembly and reduces manpower waste;

[0072] (4) The left and / or right frame plates of the inner frame of the flower basket adopt a movable structural design, which allows the clean silicon material to be poured directly into the packaging bag after cleaning, reducing manual contact and reducing the introduction of pollution sources.

[0073] Example 2

[0074] This embodiment discloses a cleaning system, including a cleaning tank and a cleaning flower basket. The cleaning flower basket adopts the flower basket described in Example 1. The cleaning tank is connected to the cleaning machine loading platform through the cleaning machine loading platform track. After the flower basket completes the silicon material loading on the cleaning machine loading platform, the flower basket is transferred to the cleaning tank through the cleaning machine loading platform track for cleaning.

[0075] The cleaning system of this embodiment adopts the flower basket described in Example 1, so it can achieve all-round cleaning; it can facilitate the transportation of silicon blocks and reduce manpower waste; it can reduce manual shoveling contact during bagging and reduce the introduction of pollution sources.

[0076] It will be understood that the above embodiments are merely exemplary embodiments for illustrating the principles of the present invention, and the present invention is not limited thereto. Those skilled in the art will appreciate that various modifications and improvements can be made without departing from the spirit and substance of the present invention, and such modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A flower basket for cleaning polysilicon blocks, characterized in that: It comprises a flower basket outer frame (1) and a plurality of flower basket inner frames (2); The top of the flower basket outer frame is open, and a plurality of first openings (3) are provided on the side and bottom frame plates thereof; A plurality of rails (4) are provided on the inner side of the flower basket outer frame, each rail being located at a different height of the flower basket outer frame, each flower basket inner frame being located on each rail, and a plurality of second openings (14) are provided on the frame plate of the flower basket inner frame; In addition, two opposite side frame plates of the flower basket outer frame are provided with lifting mechanisms for driving the flower basket to perform lifting movements, so that one side of the flower basket rises while the other side falls during the cleaning process.

2. The flower basket for cleaning polysilicon blocks according to claim 1, characterized in that: The outer frame and the inner frame of the flower basket are both rectangular in structure as a whole, and the rails are arranged transversely on the inner sides of the front and rear frame plates.

3. The flower basket for cleaning polysilicon blocks according to claim 2, characterized in that: The track is a foldable track, which includes a first component (41) and a second component (42). The first component is arranged on the inner side of the front and rear frame plates of the flower basket outer frame, and the second component is stacked on the outer side of the first component. When in use, it is unfolded to form a vertical angle with the frame plates.

4. The flower basket for cleaning polysilicon blocks according to claim 3, characterized in that: The second component is provided with a slide rail (5), and the inner frame of the flower basket is provided with a roller (13), which is adapted to the slide rail.

5. The flower basket for cleaning polysilicon blocks according to claim 3, characterized in that: Limit blocks (6) are provided at both ends of the track.

6. The flower basket for cleaning polysilicon blocks according to claim 3, characterized in that: Support frames (7) are respectively provided at the four corners of the inner side of the flower basket outer frame for fixing the first component.

7. The flower basket for cleaning polysilicon blocks according to claim 3, characterized in that: The left and right side frame plates of the flower basket outer frame each include an upper plate surface, a middle hollow structure (9) and a lower support structure (11); the lifting mechanism includes a driving device (12) and a foldable lifting rod (10). The foldable lifting rod is arranged in the middle hollow structure between the upper plate and the lower support structure, and the top end of the foldable lifting rod is connected to the upper plate, and the bottom end of the foldable lifting rod is connected to the lower support structure. The driving device is connected to the foldable lifting rod to control the extension and retraction of the foldable lifting rod. When the foldable telescopic rod is extended, the lower supporting structure extends from the middle hollow structure to raise the upper plate surface; when the foldable lifting rod is retracted, the upper plate surface descends and the lower supporting structure retracts into the middle hollow structure.

8. The flower basket for cleaning polysilicon blocks according to claim 3, characterized in that: The left side frame plate and / or the right side frame plate of the inner frame of the flower basket is a movable structure, which is detachably connected to the adjacent frame plates to achieve the closing and opening of the side frame plates.

9. The flower basket for cleaning polysilicon blocks according to claim 8, characterized in that: The left side and / or right side of the inner frame of the flower basket is provided with a plug-in hole (15), and the left frame plate and / or the right frame plate are detachably connected with the adjacent frame plate through the plug-in hole.

10. The flower basket for cleaning polysilicon blocks according to claim 8, characterized in that: A rotating rod (16) is provided at the top of the left side and / or right side of the inner frame of the flower basket, and a frame plate opening and closing locking device (17) is provided at the bottom of the side. The left frame plate and / or the right frame plate are connected to the rotating rod and are detachably connected to the adjacent frame plate through the rotating rod.

11. The flower basket for cleaning polysilicon blocks according to claim 8, characterized in that: A rolling curtain structure (18) is provided on the left side and / or right side of the inner frame of the flower basket, and the left frame plate and / or the right frame plate are detachably connected to the adjacent frame plate through the rolling curtain structure.

12. The flower basket for cleaning polysilicon blocks according to any one of claims 3 to 11, characterized in that: The outer sides of the flower basket outer frame are respectively provided with hanging ears (8).

13. A cleaning system comprising a cleaning tank and a cleaning basket, characterized in that: The flower basket for cleaning is the flower basket according to any one of claims 1 to 12.

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