Hot air drying device for polycrystalline silicon blocks

Abstract

The utility model discloses a hot air drying device for polycrystalline silicon blocks, which belongs to the technical field of polycrystalline silicon drying and comprises a drying box and a conveying belt arranged in the drying box and used for conveying the polycrystalline silicon blocks. A leakage groove is formed in the bottom end of the drying box, a second discharging frame wrapping the leakage groove and a first discharging frame communicating with the drying box are fixed to the bottom end of the drying box, two connecting blocks are fixed to the vertical inner wall of the leakage groove, mounting grooves are formed in the sides, close to each other, of the two connecting blocks, and a second telescopic rod is mounted at the top end of one connecting block. A moving part of the second telescopic rod is provided with a moving frame extending into the mounting groove, a motor is installed on the vertical inner wall of the moving frame, the output end of the motor is connected with a connecting roller through a rotating rod in a sleeving mode, a brush is attached to the surface of the connecting roller, and an inclined block is fixed to the inner bottom wall of the drying box. And polycrystalline silicon chips attached to the surface of the conveying belt can be conveniently cleaned and collected, manpower is saved, and the use efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of polysilicon drying, in particular to a polysilicon block hot air drying device. Background Art

[0002] Polycrystalline silicon is a form of single crystal silicon. When molten silicon solidifies under supercooling conditions, silicon atoms are arranged in the form of diamond lattices to form many crystal nuclei. If these crystal nuclei grow into grains with different crystal plane orientations, these grains will combine to form polycrystalline silicon.

[0003] During use, the existing polysilicon hot air drying device generally uses a conveyor belt to transport polysilicon for drying. During the drying process, polysilicon debris will adhere to the conveyor belt surface of the conveyor belt and need to be manually cleaned and recovered after the work is completed, which is time-consuming and labor-intensive and reduces the use efficiency.

[0004] For example, a polysilicon particle drying device (authorization announcement number CN218821513U) effectively cools down the microwave generator to prevent the internal circuit of the microwave generator from being damaged due to overheating, thereby ensuring the working safety of the microwave generator. This device has the following problem: during use, the polysilicon debris attached to the surface of the conveyor belt cannot be cleaned and recovered, which reduces the use efficiency. Utility Model Content

[0005] The utility model aims to provide a hot air drying device for polysilicon blocks to solve the problems raised in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hot air drying device for polysilicon blocks, comprising: a drying box and a conveyor belt arranged inside the drying box for transporting polysilicon blocks; a leakage groove is provided at the bottom end of the drying box, a second discharge frame wrapping the leakage groove and a first discharge frame communicating with the drying box are fixed at the bottom end of the drying box, two connecting blocks are fixed on the vertical inner wall of the leakage groove, and mounting grooves are provided on the sides of the two connecting blocks close to each other, a second telescopic rod is installed on the top of one of the connecting blocks, a moving part of the second telescopic rod is installed with a moving frame extending to the inside of the mounting groove, a motor is installed on the vertical inner wall of the moving frame, the output end of the motor is connected to a connecting roller with a brush attached to the surface through a rotating rod, and an inclined block is fixed on the inner bottom wall of the drying box;

[0007] Two partitions are fixed on the vertical inner wall of the drying box, a connecting frame is fixed on the vertical side of one of the partitions, mounting frames are fixed on both sides of the connecting frame, and inclined plates are movably mounted on the vertical side of the connecting frame through hinges.

[0008] In a further embodiment, a top box and a ventilation box connected to the drying box are respectively fixed to the top and vertical sides of the drying box, and a feed frame is fixed to the top of the drying box.

[0009] In a further embodiment, a plurality of drying fans for drying and heating are installed on the vertical side of the ventilation box.

[0010] In a further embodiment, a plurality of connecting pipes communicating with the top box are installed at the top of the ventilation box.

[0011] In a further embodiment, two vertical plates for mounting a conveyor belt are fixed to the inner top wall of the drying box.

[0012] In a further embodiment, two support plates are fixed on both sides of the drying box.

[0013] In a further embodiment, a first telescopic rod is installed on a vertical inner wall of one of the installation frames, and a moving plate is installed on one side of a moving portion of the first telescopic rod.

[0014] Compared with the prior art, the technical effects and advantages of the utility model are as follows:

[0015] The polysilicon block hot air drying device drives the moving plate to move by means of a first telescopic rod arranged on the side of the installation frame, so that the inclined plate is attached to the conveyor belt under the movement of the hinge, so that the polysilicon is scraped into the first discharging frame, and the polysilicon debris on the conveyor belt is scraped off for the first time;

[0016] The second telescopic rod at the bottom end of the connecting block is used to drive the moving frame to move in the installation groove, so that the rotating rod at the output end of the motor drives the connecting roller to approach the conveyor belt, and the brush on the surface of the connecting roller is used to scrape off the polysilicon debris on the surface of the conveyor belt for the second time, thereby facilitating the cleaning and collection of the polysilicon debris attached to the surface of the conveyor belt, saving manpower and improving utilization efficiency.

[0017] During use, the first telescopic rod in the installation frame is extended and retracted to drive the moving plate to move, so that the moving plate pushes the inclined plate to fit the partition, and the polysilicon block slides into the second discharging frame through the inclined plate and the inclined block, thereby eliminating the need to stop the conveyor belt when replacing the collection box. The polysilicon block hot air drying device is convenient for cleaning and collecting polysilicon debris attached to the surface of the conveyor belt, saving manpower and improving use efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 For the utility model Figure 1 A schematic diagram of the structure in which the partition is removed;

[0021] Figure 3 It is a schematic diagram of the structure of the turning over of the drying box of the utility model;

[0022] Figure 4 For the utility model Figure 3 A schematic diagram of the structure in which the second discharging frame is removed;

[0023] Figure 5 This is a schematic diagram of the structure inside the drying box of the utility model;

[0024] Figure 6 It is a structural schematic diagram of the conveyor belt of the utility model;

[0025] Figure 7 For the utility model Figure 4 A magnified view of the structure in the middle.

[0026] Description of reference numerals:

[0027] In the figure: 1. top box; 2. drying box; 3. support plate; 4. feed frame; 5. partition; 6. connecting pipe; 7. ventilation box; 8. drying fan; 9. conveyor belt; 10. partition; 11. first discharge frame; 12. second discharge frame; 13. connecting block; 14. drain groove; 15. tilting block; 16. tilting plate; 17. connecting frame; 18. moving plate; 19. first telescopic rod; 20. mounting frame; 21. second telescopic rod; 22. moving frame; 23. motor; 24. mounting groove; 25. connecting roller. DETAILED DESCRIPTION

[0028] In the following description, a large number of specific details are given to provide a more thorough understanding of the utility model. However, it is obvious to those skilled in the art that the utility model can be implemented without one or more of these details. In other examples, in order to avoid confusion with the utility model, some technical features known in the art are not described.

[0029] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside in the figures shown in the present utility model, and are explained here together.

[0030] The connection method can adopt existing methods such as bonding, welding, bolt connection, etc., depending on actual needs. Example

[0031] See also Figures 1 to 7 The drying box 2 is the main body of the device, and a conveyor belt 9 is installed on the inner top wall of the drying box; a leakage groove 14 is provided at the bottom end of the drying box 2, and a second discharge frame 12 wrapping the leakage groove 14 and a first discharge frame 11 communicating with the drying box 2 are fixed at the bottom end of the drying box 2, and two connecting blocks 13 are fixed on the vertical inner wall of the leakage groove 14, and the two connecting blocks 13 are provided with a mounting groove 24 on one side close to each other, and a second telescopic rod 21 is installed on the top of one of the connecting blocks 13, and the moving part of the second telescopic rod 21 is installed with a mounting groove extending to the mounting groove 24. A movable frame 22 is installed inside the groove 24, and a motor 23 is installed on the vertical inner wall of the movable frame 22. The output end of the motor 23 is connected with a connecting roller 25 with a brush attached to the surface through a rotating rod. A tilting block 15 is fixed to the inner bottom wall of the drying box 2; the movable plate 18 is driven to move by a first telescopic rod 19 arranged on the side of the installation frame 20, so that the tilting plate 16 is attached to the conveyor belt 9 under the movement of the hinge, so that the polysilicon is scraped into the first discharging frame 11, and the polysilicon debris on the conveyor belt 9 is scraped off for the first time.

[0032] The second telescopic rod 21 at the bottom of the connecting block 13 is used to drive the moving frame 22 to move in the installation slot 24, so that the rotating rod at the output end of the motor 23 drives the connecting roller 25 to approach the conveyor belt 9, and the brush on the surface of the connecting roller 25 is used to scrape off the polysilicon debris on the surface of the conveyor belt 9 for the second time, so as to facilitate the cleaning and collection of the polysilicon debris attached to the surface of the conveyor belt 9, save manpower and improve the use efficiency. Two partitions 5 are fixed to the vertical inner wall of the drying box 2, and a connecting frame 17 aligned with the first discharging frame 11 is fixed to the vertical side of one of the partitions 5, and the installation frame 20 is fixed on both sides of the connecting frame 17. The vertical side of the connecting frame 17 is movably installed with an inclined plate 16 through a hinge.

[0033] A top box 1 and a ventilation box 7 communicated with the drying box 2 are fixed to the top and vertical sides of the drying box 2 respectively, a feed frame 4 is fixed to the top of the drying box 2, a plurality of drying fans 8 for drying and heating are installed on the vertical sides of the ventilation box 7, a plurality of connecting pipes 6 communicated with the top box 1 are installed on the top of the ventilation box 7, two vertical plates 10 for installing a conveyor belt 9 are fixed to the inner top wall of the drying box 2, two support plates 3 are fixed on both sides of the drying box 2, a first telescopic rod 19 is installed on the vertical inner wall of one of the mounting frames 20, and a movable plate 18 is installed on one side of the moving part of the first telescopic rod 19.

[0034] The drying fan 8, the first telescopic rod 19, the second telescopic rod 21 and the motor 23 are all conventional instruments. The working principle, size and model are irrelevant to the function of the present application, so they are not described in detail. The control method of the present invention is controlled by a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0035] How it works

[0036] During use, the hot air drying device for polysilicon blocks feeds through the feed frame 4 arranged at the top of the drying box 2, so that the polysilicon blocks fall on the conveyor belt 9 for transportation and are dried by the drying fan 8. Subsequently, the second telescopic rod 21 arranged at the bottom of the connecting block 13 is extended and retracted, so that the moving frame 22 in the mounting groove 24 moves upward, so that the rotating rod drives the connecting roller 25 to move upward, and the connecting roller 25 scrapes off the polysilicon debris through the rotation of the motor 23.

[0037] It should be noted that, in this article, relational terms such as one and two are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or still includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by... does not exclude the existence of other identical elements in the process, method, article or device including the element".

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A polycrystalline silicon block hot air drying device, comprising: A drying box (2) and a conveyor belt (9) for transporting polysilicon blocks arranged inside the drying box (2); characterized in that: a drain groove (14) is provided at the bottom end of the drying box (2); a second discharge frame (12) wrapping the drain groove (14) and a first discharge frame (11) communicating with the drying box (2) are fixed at the bottom end of the drying box (2); two connecting blocks (13) are fixed on the vertical inner wall of the drain groove (14); a mounting groove (24) is provided on the side of the two connecting blocks (13) close to each other; a second telescopic rod (21) is installed at the top end of one of the connecting blocks (13); a moving frame (22) extending into the inside of the mounting groove (24) is installed on the moving part of the second telescopic rod (21); a motor (23) is installed on the vertical inner wall of the moving frame (22); an output end of the motor (23) is connected to a connecting roller (25) with a brush attached to the surface through a rotating rod; and a tilting block (15) is fixed on the inner bottom wall of the drying box (2); Two partitions (5) are fixed on the vertical inner wall of the drying box (2), a connecting frame (17) is fixed on the vertical side of one of the partitions (5), mounting frames (20) are fixed on both sides of the connecting frame (17), and an inclined plate (16) is movably mounted on the vertical side of the connecting frame (17) through a hinge.

2. A hot air drying device for polycrystalline silicon blocks according to claim 1, characterized in that: A top box (1) and a ventilation box (7) which are in communication with the drying box (2) are fixed to the top and vertical side of the drying box (2), respectively, and a feed frame (4) is fixed to the top of the drying box (2).

3. A hot air drying device for polycrystalline silicon blocks according to claim 2, characterized in that: A plurality of drying fans (8) for drying and heating are installed on the vertical side of the ventilation box (7).

4. The hot air drying device for polycrystalline silicon blocks according to claim 3, characterized in that: A plurality of connecting pipes (6) communicating with the top box (1) are installed at the top end of the ventilation box (7).

5. The hot air drying device for polycrystalline silicon blocks according to claim 1, characterized in that: Two vertical plates (10) for mounting a conveyor belt (9) are fixed to the inner top wall of the drying box (2).

6. The hot air drying device for polycrystalline silicon blocks according to claim 5, characterized in that: Two support plates (3) are fixed on both sides of the drying box (2).

7. The hot air drying device for polycrystalline silicon blocks according to claim 1, characterized in that: A first telescopic rod (19) is installed on the vertical inner wall of one of the installation frames (20), and a movable plate (18) is installed on one side of the movable portion of the first telescopic rod (19).

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