Precipitated silicon powder treatment device

Abstract

The utility model discloses a precipitated silica powder treatment device, which comprises a precipitation barrel, a filter press and a slurry pump, an annular pipe is arranged in the precipitation barrel, one end of the annular pipe penetrates out of the precipitation barrel and is connected with a connecting pipe through a flange, a plurality of liquid suction pipes are inserted into the bottom of the annular pipe, and liquid suction heads are clamped at the bottom ends of the liquid suction pipes. A motor is fixedly connected to the outer wall of the top of the precipitation barrel, the output end of the motor penetrates through the top of the precipitation barrel and is fixedly connected with a rotating shaft, and a plurality of stirring fan blades are fixedly connected to the outer wall of the rotating shaft. The rotating shaft is driven by the motor to rotate, so that the stirring fan blades are driven to rotate, clarified liquor and sediment are mixed, meanwhile, the rotating shaft drives the rotating scraper to rotate, and the rotating scraper scrapes the inner wall of the bottom of the sediment barrel, so that the sediment is separated from the bottom of the sediment barrel. Further, the silicon powder precipitated on the inner wall of the bottom of the precipitation barrel is mixed with the clarified liquid, so that the silicon powder is subsequently sucked out of the precipitation barrel.

Description

Technical Field

[0001] The utility model relates to the technical field of silicon wafer processing, in particular to a precipitated silicon powder processing device. Background Art

[0002] A large amount of grinding silicon powder wastewater will be generated during chip packaging testing. Since the silicon powder in the grinding wastewater itself has no charge, has high turbidity and small particle size, it can form a very stable liquid and will not precipitate naturally, making the grinding silicon powder wastewater difficult to treat.

[0003] At present, in the treatment process of existing silicon powder wastewater, in order to precipitate the silicon powder in the grinding silicon powder wastewater, a large amount of flocculant is generally added to precipitate the silicon powder. However, this often causes a large amount of silicon powder to precipitate at the bottom of the sedimentation tank or sedimentation barrel, which is inconvenient to handle, thus affecting the recycling of silicon powder. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that in the process of treating the existing silicon powder wastewater, in order to precipitate the silicon powder in the grinding silicon powder wastewater, a large amount of flocculant is generally added to precipitate the silicon powder, but this often leads to a large amount of silicon powder being precipitated at the bottom of the sedimentation tank or the sedimentation barrel, which is inconvenient to handle, thus affecting the recycling of the silicon powder. A precipitated silicon powder treatment device is proposed.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The precipitated silicon powder processing device comprises a sedimentation barrel, a filter press and a slurry pump, wherein an annular tube is arranged in the sedimentation barrel, one end of the annular tube passes through the sedimentation barrel and is connected to a connecting tube through a flange, a plurality of suction tubes are plugged into the bottom of the annular tube, a suction head is clamped into the bottom end of the suction tube, a motor is fixedly connected to the top outer wall of the sedimentation barrel, an output end of the motor passes through the top of the sedimentation barrel and is fixedly connected to a rotating shaft, a plurality of stirring blades are fixedly connected to the outer wall of the rotating shaft, a plurality of rotating scrapers are fixedly connected to the bottom inner wall of the sedimentation barrel, a liquid inlet end of the slurry pump is connected to one end of the connecting tube through a flange, a liquid outlet end of the slurry pump is connected to a second liquid inlet pipe through a flange, and the other end of the second liquid inlet pipe is plugged into one end of the filter press.

[0007] Furthermore, a first liquid inlet pipe is inserted into the top of the sedimentation barrel.

[0008] Furthermore, a dosing tube is inserted into the top of the sedimentation tank.

[0009] Furthermore, a first valve is provided on the connecting pipe.

[0010] Furthermore, a drain pipe is inserted into the bottom of the filter press.

[0011] Furthermore, a second valve is provided on the liquid discharge pipe.

[0012] The beneficial effects of the utility model are:

[0013] 1. The shaft is rotated by the motor, thereby driving the stirring blades to rotate, so that the clarified liquid and the sediment are mixed. At the same time, the shaft drives the rotating scraper to rotate, so that the rotating scraper scrapes the bottom inner wall of the sedimentation barrel, thereby mixing the silicon powder settled on the bottom inner wall of the sedimentation barrel with the clarified liquid, so that the silicon powder can be sucked out of the sedimentation barrel later.

[0014] 2. Under the action of the slurry pump, the mixed liquid in the sedimentation tank is sucked into the liquid suction pipe from the liquid suction head, and then input into the connecting pipe through the annular pipe, and then input into the filter press from the second liquid inlet pipe, and the silicon powder is filtered out by the filter press, so as to facilitate the subsequent recycling of the silicon powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure of the precipitated silicon powder processing device proposed by the utility model;

[0016] Figure 2 This is a rear structural schematic diagram of the precipitated silicon powder processing device proposed by the utility model;

[0017] Figure 3 This is a schematic cross-sectional structure diagram of the precipitated silicon powder processing device proposed in the utility model.

[0018] In the figure: 1. sedimentation barrel; 2. filter press; 3. connecting pipe; 4. annular pipe; 5. suction pipe; 6. suction head; 7. rotating shaft; 8. motor; 9. rotating scraper; 10. stirring fan blade; 11. first liquid inlet pipe; 12. dosing pipe; 13. first valve; 14. slurry pump; 15. second liquid inlet pipe; 16. discharge pipe; 17. second valve. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-Figure 3The precipitated silicon powder processing device comprises a precipitation barrel 1, a filter press 2 and a slurry pump 14. An annular tube 4 is arranged in the precipitation barrel 1. One end of the annular tube 4 passes through the precipitation barrel 1 and is connected to a connecting tube 3 through a flange. A plurality of liquid suction tubes 5 are inserted at the bottom of the annular tube 4. A liquid suction head 6 is clamped at the bottom end of the liquid suction tube 5. A motor 8 is fixed to the outer wall of the top of the precipitation barrel 1 by bolts. A rotating shaft 7 is fixed to the outer wall of the rotating shaft 7 by bolts through the output end of the motor 8. A plurality of stirring blades 10 are fixed to the outer wall of the rotating shaft 7 by bolts. The rotating shaft 7 rotates under the drive of the motor 8, thereby driving the stirring blades 10 to rotate, so that the clarified liquid is mixed with the precipitate. A plurality of rotating scrapers 9 are fixed to the bottom end of the rotating shaft 7 by bolts. The rotating scraper 9 contacts the bottom inner wall of the sedimentation barrel 1, and the rotating shaft 7 drives the rotating scraper 9 to rotate, so that the rotating scraper 9 scrapes the bottom inner wall of the sedimentation barrel 1, and then the silicon powder precipitated on the bottom inner wall of the sedimentation barrel 1 is mixed with the clarified liquid. The liquid inlet end of the slurry pump 14 is connected to one end of the connecting pipe 3 through a flange, and the liquid outlet end of the slurry pump 14 is connected to the second liquid inlet pipe 15 through a flange. The other end of the second liquid inlet pipe 15 is plugged into one end of the filter press 2. Under the action of the slurry pump 14, the mixed liquid in the sedimentation barrel 1 is sucked into the liquid suction pipe 5 from the liquid suction head 6, and then input into the connecting pipe 3 through the annular pipe 4, and then input into the filter press 2 from the second liquid inlet pipe 15, and the silicon powder is filtered out by the filter press 2.

[0021] A first liquid inlet pipe 11 is connected to the top of the sedimentation barrel 1, so that wastewater can be put into the sedimentation barrel 1 from the first liquid inlet pipe 11. A dosing pipe 12 is connected to the top of the sedimentation barrel 1, and flocculant is put into the sedimentation barrel 1 from the dosing pipe 12, so as to accelerate the precipitation of silicon powder in the wastewater. A first valve 13 is provided on the connecting pipe 3, and a drain pipe 16 is connected to the bottom of the filter press 2. A second valve 17 is provided on the drain pipe 16. When the second valve 17 is opened, the liquid is discharged from the drain pipe 16 from the filter press 2.

[0022] The working principle of this embodiment is as follows: when in use, first, wastewater is put into the sedimentation barrel 1 from the first liquid inlet pipe 11, and then, flocculant is put into the sedimentation barrel 1 from the dosing pipe 12, so as to accelerate the sedimentation of silicon powder in the wastewater. After sedimentation, the rotating shaft 7 is driven by the motor 8 to rotate, thereby driving the stirring blade 10 to rotate, so that the clarified liquid is mixed with the sediment, and at the same time, the rotating shaft 7 drives the rotating scraper 9 to rotate, so that the rotating scraper 9 scrapes the bottom inner wall of the sedimentation barrel 1, thereby mixing the silicon powder precipitated on the bottom inner wall of the sedimentation barrel 1 with the clarified liquid, and then, the first valve 13 is opened, and under the action of the slurry pump 14, the mixed liquid in the sedimentation barrel 1 is sucked into the liquid suction pipe 5 from the liquid suction head 6, and then input into the connecting pipe 3 through the annular pipe 4, and then input into the filter press 2 from the second liquid inlet pipe 15, and the silicon powder is filtered out by the filter press 2, and finally, the second valve 17 is opened, and the liquid is discharged from the discharge pipe 16.

[0023] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A precipitated silicon powder processing device, comprising a precipitation tank (1), a filter press (2) and a slurry pump (14), characterized in that: The sedimentation barrel (1) is provided with an annular tube (4), one end of the annular tube (4) passes through the sedimentation barrel (1) and is connected to a connecting tube (3) via a flange, a plurality of liquid suction tubes (5) are plugged into the bottom of the annular tube (4), and a liquid suction head (6) is clamped at the bottom end of the liquid suction tube (5), a motor (8) is fixedly connected to the top outer wall of the sedimentation barrel (1), the output end of the motor (8) passes through the top of the sedimentation barrel (1) and is fixedly connected to a rotating shaft (7), a plurality of stirring blades (10) are fixedly connected to the outer wall of the rotating shaft (7), a plurality of rotating scrapers (9) are fixedly connected to the bottom end of the rotating shaft (7), and the rotating scrapers (9) are in contact with the bottom inner wall of the sedimentation barrel (1), the liquid inlet end of the slurry pump (14) is connected to one end of the connecting tube (3) via a flange, the liquid outlet end of the slurry pump (14) is connected to a second liquid inlet pipe (15) via a flange, and the other end of the second liquid inlet pipe (15) is plugged into one end of the filter press (2).

2. The precipitated silicon powder processing device according to claim 1, characterized in that: A first liquid inlet pipe (11) is inserted into the top of the sedimentation barrel (1).

3. The precipitated silicon powder processing device according to claim 1, characterized in that: A drug adding pipe (12) is inserted into the top of the sedimentation barrel (1).

4. The precipitated silicon powder processing device according to claim 1, characterized in that: The connecting pipe (3) is provided with a first valve (13).

5. The precipitated silicon powder processing device according to claim 1, characterized in that: A liquid discharge pipe (16) is plugged into the bottom of the filter press (2).

6. The precipitated silicon powder processing device according to claim 5, characterized in that: The liquid discharge pipe (16) is provided with a second valve (17).

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