Granular silicon surface cleaning device

Abstract

The utility model discloses a particle silicon surface cleaning device which comprises side plates, a conveying belt, a mounting frame, a cleaning box and a spraying device, the conveying belt is arranged between the two opposite side plates, and screen holes are formed in the conveying belt; the mounting frame is arranged in the conveying belt and is connected with the two side plates; the cleaning box is arranged on the mounting frame, a partition plate is arranged in the cleaning box to divide the cleaning box into a chemical cleaning area and a clear water cleaning area, and the chemical cleaning area and the clear water cleaning area are filled with dust removal liquid and clear water respectively; the two spraying devices are connected with the chemical cleaning area and the clean water cleaning area respectively, and the spraying ends of the two spraying devices extend to the upper portion of the conveying belt respectively. After particle silicon is subjected to chemical cleaning, clean water spraying can be conducted, chemical substances on the particle silicon are reduced, the purity of the particle silicon is improved, and the service life of the particle silicon is prolonged. And a hidden spraying device is adopted, and the cleaning box is arranged in the conveying belt, so that the occupied space is reduced.

Description

Technical Field

[0001] This utility model relates to the field of silicon material production technology, and in particular to a device for cleaning the surface of particulate silicon. Background Technology

[0002] To facilitate the handling and integration of silicon materials, which are suitable for a variety of industrial and technological fields, preparing silicon into granular silicon helps improve its applicability and processability, making it easier to process, integrate, and utilize in different application areas.

[0003] In related technologies, when silicon material is prepared into granular silicon, physical crushing and wear during transportation can cause particles to collide and adhere to the surface of the granular silicon. These powders (such as iron powder and other metal powders) affect the conductivity of the granular silicon and need to be removed. A common method is to use chemical cleaning (such as dust removal spray equipment). By spraying special dust removal liquid onto the surface of the granular silicon, the powder can be quickly wetted and removed.

[0004] However, the sprayed dust removal liquid will cause a decrease in the purity of the silicon particles, which is not suitable for high-purity applications (such as semiconductor manufacturing). Moreover, most existing cleaning devices are external, that is, they extend the spray pipe into the transport path of the silicon particles through an external cleaning box to clean them, which occupies space. Summary of the Invention

[0005] This utility model aims to at least partially solve one of the technical problems in the above-mentioned technologies.

[0006] To achieve the above objectives, the first aspect of this utility model provides a particulate silicon surface cleaning device, comprising: side plates, a conveyor belt, a mounting frame, a cleaning tank, and spraying devices. The conveyor belt is positioned between two opposing side plates and has sieve holes. The mounting frame is located within the conveyor belt and connects to the two side plates. The cleaning tank is mounted on the mounting frame and has a partition inside to divide it into a chemical cleaning area and a clean water cleaning area. The chemical cleaning area and the clean water cleaning area are respectively filled with dust removal liquid and clean water. Two spraying devices are respectively connected to the chemical cleaning area and the clean water cleaning area. Each spraying device includes a water pump, a spray pipe, and a spray head. The water pump is mounted on the mounting frame and connected to the cleaning tank via a connecting pipe. One end of the spray pipe is connected to the water pump, and the other end passes through the side plate and extends upward above the conveyor belt. The spray head is located on the spray pipe above the conveyor belt.

[0007] In addition, the particulate silicon surface cleaning device proposed above according to this utility model may also have the following additional technical features:

[0008] As a further description of the above technical solution: multiple baffles are arranged sequentially and equidistantly on the conveyor belt.

[0009] As a further description of the above technical solution: the chemical cleaning area is close to the feed end of the conveyor belt, and the water cleaning area is close to the discharge end of the conveyor belt.

[0010] As a further description of the above technical solution: the top of the cleaning tank is provided with receiving hoppers extending to both sides.

[0011] As a further description of the above technical solution: both the chemical cleaning area and the clean water cleaning area are provided with water inlet pipes and drain pipes, and the water inlet pipes and the drain pipes extend to the outside of the side plate respectively.

[0012] As a further description of the above technical solution: the conveyor belt also includes a drive motor and a connecting roller. Two connecting rollers are respectively arranged between the two side plates. The conveyor belt is sleeved on the connecting rollers, and one of the connecting rollers is connected to the drive motor. The drive motor is arranged on the side plate.

[0013] As a further description of the above technical solution: the two spray pipes located above the conveyor belt are respectively arranged on the side of the chemical cleaning area and the clean water cleaning area near the feed end.

[0014] As a further description of the above technical solution: each of the two side plates is provided with a support seat, and the spray pipe is mounted on the support seat.

[0015] According to the present invention, the particulate silicon surface cleaning device can perform water spraying after the particulate silicon has been chemically cleaned, thereby reducing the presence of chemical substances on the particulate silicon and improving the purity of the particulate silicon. In addition, the hidden spraying device is adopted, and the cleaning box is set inside the conveyor belt, which reduces the space occupied.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0018] Figure 1 This is a schematic diagram of a particulate silicon surface cleaning device according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of a particulate silicon surface cleaning device according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the connection structure of the cleaning tank and the spraying device according to an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the connection structure of the cleaning tank and the spraying device according to another embodiment of the present invention;

[0022] As shown in the figure:

[0023] 100. Side plate; 101. Support leg; 200. Conveyor belt; 210. Drive motor; 220. Connecting roller; 201. Screen hole; 202. Baffle; 300. Mounting frame; 400. Cleaning tank; 402. Receiving hopper; 401. Partition; 403. Water inlet pipe; 404. Drain pipe; 410. Chemical cleaning area; 420. Clean water cleaning area; 500. Spraying device; 510. Water pump; 520. Spray pipe; 530. Spray head. Detailed Implementation

[0024] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0025] The particulate silicon surface cleaning device of this utility model embodiment will be described below with reference to the accompanying drawings.

[0026] like Figure 1 and Figure 2 As shown, the particulate silicon surface cleaning device of this utility model embodiment may include a side plate 100, a conveyor belt 200, a mounting frame 300, a cleaning tank 400, and a spraying device 500.

[0027] The conveyor belt 200 is disposed between two opposite side plates 100. The conveyor belt 200 has a screen hole 201, and the side plates 100 are provided with support legs 101 for supporting the entire device.

[0028] In one embodiment of this utility model, a plurality of baffles 202 are arranged sequentially and equidistantly on the conveyor belt 200.

[0029] The conveyor belt 200 also includes a drive motor 210 and a connecting roller 220. Two connecting rollers 220 are respectively arranged between the two side plates 100. The conveyor belt 200 is sleeved on the connecting rollers 220, and one of the connecting rollers 220 is connected to the drive motor 210. The drive motor 210 is arranged on the side plate 100.

[0030] When the relevant personnel turn on the drive motor 210, the drive motor 210 drives the connecting roller 220 to rotate, thereby realizing the rotation of the conveyor belt 200 to achieve the transmission of silicon particles.

[0031] The mounting bracket 300 is located inside the conveyor belt 200 and is connected to two side plates 100. The cleaning box 400 is located on the mounting bracket 300.

[0032] like Figure 4 As shown, a partition 401 is provided inside the cleaning tank 400 to divide the cleaning tank 400 into a chemical cleaning area 410 and a clean water cleaning area 420. The chemical cleaning area 410 and the clean water cleaning area 420 are respectively filled with dust removal liquid and clean water.

[0033] like Figure 3 As shown, the two spray devices 500 are respectively connected to the chemical cleaning area 410 and the clean water cleaning area 420.

[0034] Each spray device 500 includes a water pump 510, a spray pipe 520, and a spray head 530.

[0035] The water pump 510 is mounted on the mounting bracket 300 and connected to the cleaning tank 400 via a connecting pipe. One end of the spray pipe 520 is connected to the water pump 510, and the other end passes through the side plate 100 and extends upward to the top of the conveyor belt 200. The spray head 530 is mounted on the spray pipe 520 above the conveyor belt 200.

[0036] In one embodiment of this utility model, each of the two side plates 100 is provided with a support seat, and the spray pipe 520 is disposed on the support seat to support the spray pipe 520.

[0037] In one embodiment of this utility model, the chemical cleaning area 410 is close to the feed end of the conveyor belt 200, and the clean water cleaning area 420 is close to the discharge end of the conveyor belt 200, so as to ensure that the particle silicon is first cleaned by the dust removal liquid and then rinsed by the clean water during cleaning.

[0038] Two spray pipes 520 located above the conveyor belt 200 are respectively set on the side of the chemical cleaning area 410 and the clean water cleaning area 420 near the feed end. When the dust removal liquid is sprayed on the granular silicon, the dust removal liquid after cleaning can fall back into the chemical cleaning area 410. Similarly, when the clean water is sprayed on the granular silicon, the clean water after cleaning can fall back into the clean water cleaning area 420.

[0039] The top of the cleaning tank 400 is provided with receiving hoppers 402 extending to both sides to collect the dust removal liquid and clean water sprayed from the spraying device 500 respectively, so that the dust removal liquid and clean water enter the chemical cleaning area 410 and the clean water cleaning area 420 respectively.

[0040] Both the chemical cleaning area 410 and the clean water cleaning area 420 are equipped with a water inlet pipe 403 and a drain pipe 404, and the water inlet pipe 403 and the drain pipe 404 extend to the outside of the side plate 100 to facilitate the replacement of dust removal liquid and clean water.

[0041] Specifically, when relevant personnel need to clean the granular silicon, they first turn on the drive motor 210 and the water pump 510, and then pour the granular silicon evenly onto the conveyor belt 200.

[0042] As the silicon particles on the conveyor belt 200 pass through the chemical cleaning zone 410, the corresponding spray device 500 cleans the silicon particles. Specifically, the water pump 510 draws the dust removal liquid from the chemical cleaning zone 410 and transmits the dust removal liquid through the spray pipe 520 to the spray head 530. The spray head 530 then sprays the silicon particles below. The dust removal liquid reacts with the powder and removes the powder from the silicon particles. As the conveyor belt 200 moves, the dust removal liquid drips from the silicon particles and the conveyor belt 200 and flows back into the chemical cleaning zone 410 through the sieve holes 201.

[0043] When the silicon particles pass through the water cleaning area 420, the corresponding spraying device 500 sprays water onto the silicon particles to wash away the residual dust removal liquid on the silicon particles and drips it into the water cleaning area 420.

[0044] After a period of cleaning, relevant personnel can replace the dust removal liquid and clean water in the chemical cleaning area 410 and the clean water cleaning area 420 respectively. That is, open the corresponding drain pipe 404 to drain the dust removal liquid and clean water, then close the drain pipe 404 and inject new dust removal liquid and clean water into the chemical cleaning area 410 and the clean water cleaning area 420 through the corresponding water inlet pipe 403.

[0045] In summary, the particulate silicon surface cleaning device according to the present invention can perform water spraying after the particulate silicon has been chemically cleaned, thereby reducing the presence of chemical substances on the particulate silicon and improving the purity of the particulate silicon. Furthermore, the use of a concealed spraying device, with the cleaning box set inside the conveyor belt, reduces space occupation.

[0046] In the description of this specification, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0047] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0048] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A particulate silicon surface cleaning device, characterized in that, include: Side panel (100), conveyor belt (200), mounting bracket (300), cleaning tank (400), and spray device (500), among which, The conveyor belt (200) is disposed between two opposing side plates (100), and the conveyor belt (200) is provided with sieve holes (201); The mounting bracket (300) is disposed within the conveyor belt (200) and connects the two side plates (100); The cleaning tank (400) is mounted on the mounting frame (300). A partition (401) is provided inside the cleaning tank (400) to divide the cleaning tank (400) into a chemical cleaning area (410) and a clean water cleaning area (420). The chemical cleaning area (410) and the clean water cleaning area (420) are respectively filled with dust removal liquid and clean water. The two spray devices (500) are respectively connected to the chemical cleaning area (410) and the clean water cleaning area (420). Each spray device (500) includes a water pump (510), a spray pipe (520), and a spray head (530). The water pump (510) is mounted on the mounting bracket (300) and is connected to the cleaning tank (400) via a connecting pipe; One end of the spray pipe (520) is connected to the water pump (510), and the other end passes through the side plate (100) and extends upward above the conveyor belt (200); The spray head (530) is disposed on the spray pipe (520) above the conveyor belt (200).

2. The particulate silicon surface cleaning device of claim 1, wherein, Multiple baffles (202) are arranged sequentially and at equal intervals on the conveyor belt (200).

3. The particulate silicon surface cleaning device of claim 1, wherein, The chemical cleaning area (410) is located near the feed end of the conveyor belt (200), and the water cleaning area (420) is located near the discharge end of the conveyor belt (200).

4. The particulate silicon surface cleaning device of claim 1, wherein, The top of the cleaning tank (400) is provided with receiving hoppers (402) extending to both sides.

5. The particulate silicon surface cleaning device of claim 1, wherein, Both the chemical cleaning area (410) and the clean water cleaning area (420) are equipped with a water inlet pipe (403) and a drain pipe (404), and the water inlet pipe (403) and the drain pipe (404) extend to the outside of the side plate (100).

6. The particulate silicon surface cleaning device of claim 1, wherein, The conveyor belt (200) also includes a drive motor (210) and a connecting roller (220). Two connecting rollers (220) are respectively arranged between the two side plates (100). The conveyor belt (200) is sleeved on the connecting roller (220), and one of the connecting rollers (220) is connected to the drive motor (210). The drive motor (210) is arranged on the side plate (100).

7. The particulate silicon surface cleaning device of claim 1, wherein, Two spray pipes (520) located above the conveyor belt (200) are respectively arranged on the side of the chemical cleaning area (410) and the clean water cleaning area (420) near the feed end.

8. The particulate silicon surface cleaning device of claim 1, wherein, Both side plates (100) are provided with support seats, and the spray pipe (520) is provided on the support seats.

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