Silicon-containing waste liquid treatment device

Abstract

The utility model relates to the technical field of silicon-containing waste liquid treatment, in particular to a silicon-containing waste liquid treatment device which comprises a rack, a collecting barrel is arranged on the rack, a water outlet is formed in the side wall of the bottom end of the collecting barrel, a first motor is arranged at the bottom end of the collecting barrel, and the output end of the first motor is connected with a centrifugal filtering barrel. The centrifugal filtering barrel is arranged in the collecting barrel, a barrel cover is arranged on the centrifugal filtering barrel, a waste silicon chip collecting device is arranged in the centrifugal filtering barrel, and the top end of the waste silicon chip collecting device is connected with a lifting device. According to the utility model, silicon powder filter residues attached to the inner wall of the centrifugal filtering barrel can be scraped onto the filter screen through the silicon scraping plate, and then the plugging cover is opened to collect the silicon powder filter residues from the collecting opening, so that the problem that the silicon powder filter residues after centrifugal filtering are inconvenient to take out from the centrifugal filtering barrel is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of silicon-containing waste liquid treatment, in particular to a silicon-containing waste liquid treatment device. Background Art

[0002] High-purity crystalline silicon materials are widely used in the semiconductor industry. With the rapid development of the solar energy industry and the semiconductor industry in China and even the world, the demand for raw material silicon wafers has increased dramatically. During the processing of silicon wafers, up to 50% of crystalline silicon is lost in the form of silicon powder. The silicon powder in silicon-containing wastewater is very thin, with a particle size ranging from 0.1 to 1 mm, so in order to reduce the waste of silicon powder, it is often necessary to treat the silicon-containing wastewater through a recovery device. At present, enterprises generally use centrifugal filtration to treat silicon-containing wastewater after adding coagulants, but the silicon powder residue after centrifugal filtration is not easy to remove from the centrifugal filter barrel. Utility Model Content

[0003] The purpose of the utility model is to provide a device for treating silicon-containing waste liquid, so as to solve the problem mentioned in the background technology that at present, enterprises generally adopt the method of adding coagulant aid to silicon-containing waste water and then treating it by centrifugal filtration, but the silicon powder residue after centrifugal filtration is not convenient to be taken out from the centrifugal filter barrel.

[0004] The utility model adopts the following technical solutions:

[0005] The utility model provides a silicon-containing waste liquid treatment device, comprising a frame, a collecting barrel is arranged on the frame, a water outlet is arranged on the side wall of the bottom end of the collecting barrel, a first motor is arranged at the bottom end of the collecting barrel, a centrifugal filter barrel is connected to the output end of the first motor, the centrifugal filter barrel is arranged in the collecting barrel, a barrel cover is arranged on the centrifugal filter barrel, a waste silicon chip collecting device is arranged in the centrifugal filter barrel, and the top end of the waste silicon chip collecting device is connected to a lifting device;

[0006] The waste silicon chips collecting device includes a guide rod, a first slidable mounting ring is sleeved on the guide rod, the first mounting ring is clamped on the limit device, the limit device is arranged on the guide rod, the first mounting ring is rotatably connected to a plurality of first support rods arranged in an annular direction, the middle position of the first support rod is rotatably connected to the top end of the second support rod, the bottom end of the second support rod is rotatably connected to the bottom end of the guide rod, a filter screen is hung on the bottom end of the first support rod, a circular collecting port is arranged at the center of the filter screen, an annular threaded ring is arranged in the collecting port, a sealing cover is threadedly connected to the threaded ring, a conical scraping silicon ring is arranged above the filter screen, the silicon ring is in contact with the inner wall of the centrifugal filter barrel, and the scraping silicon ring is connected to the guide rod through a plurality of connecting rods.

[0007] Furthermore, the lifting device includes a bracket, which is arranged at the top of the collecting bucket, and a guide groove is arranged at the center position of the bracket, a rack is arranged in the guide groove, the bottom end of the rack is connected to the top of the guide rod, the rack is meshed with a gear, and the gear is fixedly connected to the output end of the second motor, and the second motor is arranged on the bracket.

[0008] Furthermore, the limiting device includes a guide hole, which is arranged on the guide rod, and a spring is arranged in the guide hole. One end of the spring abuts against the bolt, and the other end abuts against the limiting block. The bolt is threadedly engaged with the guide hole, and the limiting block is slidably arranged in the guide hole, and the limiting block is snap-engaged with the first mounting ring.

[0009] Furthermore, a hook is provided at the bottom end of the first support rod.

[0010] Furthermore, a plurality of hanging rings corresponding to the hooks are provided on the edge of the filter screen, and the hanging rings are hung on the hooks.

[0011] Furthermore, a second mounting ring is provided at the bottom end of the guide rod, and the bottom end of the second support rod is rotatably connected to the second mounting ring.

[0012] Furthermore, the barrel cover includes a pair of symmetrical cover plates, one end of the two cover plates are rotatably connected, and the other end is connected by a snap-fit ​​device, and the middle position of the two cover plates is provided with a groove for the guide rod to pass through.

[0013] Compared with the prior art, the beneficial technical effects of the utility model are:

[0014] The utility model can scrape the silicon powder residue attached to the inner wall of the centrifugal filter barrel onto the filter net by using the silicon scraping plate, and then open the sealing cover to collect the silicon powder residue from the collection port, thereby solving the problem that the silicon powder residue after centrifugal filtration is difficult to be taken out from the centrifugal filter barrel. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model will be further described below in conjunction with the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the structure of the silicon-containing waste liquid treatment device in the embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the waste silicon chips collection device in the embodiment of the utility model;

[0018] Figure 3 A top view of the filter screen in the embodiment of the utility model;

[0019] Figure 4It is a top cross-sectional view of the lifting device in the embodiment of the utility model;

[0020] Figure 5 It is a cross-sectional view of the limiting device in the embodiment of the utility model;

[0021] Figure 6 It is a schematic diagram of the structure of the barrel cover in the embodiment of the utility model.

[0022] Explanation of the accompanying drawings: 1. frame; 2. collecting barrel; 3. first motor; 4. centrifugal filter barrel; 5. barrel cover; 501. cover plate; 502. snap-fit ​​device; 503. groove; 6. waste silicon chip collecting device; 601. guide rod; 602. first mounting ring; 603. limiting device; 603-1. guide hole; 603-2. spring; 603-3. bolt; 603-4. limiting block; 604. first support rod; 605. second support rod; 606. filter screen; 606-1. collecting port; 606-2. hanging ring; 607. threaded ring; 608. blocking cover; 609. silicon scraping ring; 610. connecting rod; 611. hook; 612. second mounting ring; 7. lifting device; 701. bracket; 702. guide slide; 703. rack; 704. gear; 705. second motor. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] like Figures 1 to 3 As shown, the present embodiment discloses a silicon-containing waste liquid treatment device, comprising a frame 1, a collecting barrel 2 is arranged on the frame 1, a water outlet 201 is arranged on the side wall of the bottom end of the collecting barrel 2, a first motor 3 is arranged at the bottom end of the collecting barrel 2, a centrifugal filter barrel 4 is connected to the output end of the first motor 3, the centrifugal filter barrel 4 is arranged in the collecting barrel 2, a barrel cover 5 is arranged on the centrifugal filter barrel 4, a waste silicon chip collecting device 6 is arranged in the centrifugal filter barrel 4, and the top end of the waste silicon chip collecting device 6 is connected to a lifting device 7;

[0025] The waste silicon chip collecting device 6 includes a guide rod 601, on which a slidable first mounting ring 602 is sleeved, the first mounting ring 602 is clamped on a limit device 603, the limit device 603 is arranged on the guide rod 601, and the first mounting ring 602 is rotatably connected to a plurality of annularly arranged first support rods 604, the middle position of the first support rod 604 is rotatably connected to the top end of the second support rod 605, and the bottom end of the second support rod 605 is rotatably connected to the guide rod 60 1, a filter screen 606 is hung on the bottom end of the first support rod 604, a circular collecting port 606-1 is arranged at the center of the filter screen 606, an annular threaded ring 607 is arranged in the collecting port 606-1, a plugging cover 608 is threadedly connected to the threaded ring 607, a conical scraping silicon ring 609 is arranged above the filter screen 606, the silicon ring 609 contacts the inner wall of the centrifugal filter barrel 4, and the scraping silicon ring 609 is connected to the guide rod 601 through a plurality of connecting rods 610.

[0026] like Figure 4 As shown, in this embodiment, the lifting device 7 includes a bracket 701, and the bracket 701 is arranged at the top of the collecting bucket 2. A guide groove 702 is arranged at the center position of the bracket 701, and a rack 703 is arranged in the guide groove 702. The bottom end of the rack 703 is connected to the top of the guide rod 601, and the rack 703 is meshed with the gear 704. The gear 704 is fixedly connected to the output end of the second motor 705, and the second motor 705 is arranged on the bracket 701.

[0027] like Figure 5 As shown, in this embodiment, the limiting device 603 includes a guide hole 603-1, and the guide hole 603-1 is arranged on the guide rod 601. A spring 603-2 is arranged in the guide hole 603-1. One end of the spring 603-2 abuts on the bolt 603-3, and the other end abuts on the limiting block 603-4. The bolt 603-3 is threadedly engaged with the guide hole 603-1. The limiting block 603-4 is slidably arranged in the guide hole 603-1, and the limiting block 603-4 is snap-fitted with the first mounting ring 602.

[0028] In this embodiment, a hook 611 is disposed at the bottom end of the first support rod 604 .

[0029] In this embodiment, a plurality of hanging rings 606 - 2 corresponding to the hooks 611 are provided on the edge of the filter screen 606 , and the hanging rings 606 - 2 are hung on the hooks 611 .

[0030] In this embodiment, a second mounting ring 612 is disposed at the bottom end of the guide rod 601 , and the bottom end of the second support rod 605 is rotatably connected to the second mounting ring 612 .

[0031] like Figure 6As shown, in this embodiment, the barrel cover 5 includes a pair of symmetrical cover plates 501, one end of the two cover plates 501 is rotatably connected, and the other end is connected by a snap-fit ​​device 502, and a groove 503 is provided in the middle position of the two cover plates 501 to facilitate the passage of the guide rod 601.

[0032] The use process of the utility model is as follows:

[0033] First, open the barrel cover 5, add the silicon-containing waste liquid with coagulant aid into the centrifugal filter barrel 4, and then start the first motor 3. The first motor 3 drives the centrifugal filter barrel 4 to centrifugally filter the silicon-containing waste liquid. After the filtration is completed; start the second motor 705, and the gear 704 at the output end of the second motor 705 drives the rack 703 to move upward, thereby pulling the silicon scraper ring 609 and the filter screen 606 to move upward. During the upward movement of the silicon scraper ring 609, the silicon powder residue attached to the inner wall of the centrifugal filter barrel 4 is scraped onto the filter screen 606. After the filter screen 606 is pulled out of the centrifugal filter barrel 4, release the limit device 603, pull the first mounting ring 602 upward, fold the filter screen 606, and then open the blocking cover 609 to take out the silicon powder residue from the collection port 606-1.

[0034] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A silicon-containing waste liquid treatment device, characterized in that: The invention comprises a frame (1), wherein a collecting barrel (2) is arranged on the frame (1), a water outlet (201) is arranged on the side wall of the bottom end of the collecting barrel (2), a first motor (3) is arranged at the bottom end of the collecting barrel (2), an output end of the first motor (3) is connected to a centrifugal filter barrel (4), the centrifugal filter barrel (4) is arranged in the collecting barrel (2), a barrel cover (5) is arranged on the centrifugal filter barrel (4), a waste silicon chip collecting device (6) is arranged in the centrifugal filter barrel (4), and the top end of the waste silicon chip collecting device (6) is connected to a lifting device (7); The waste silicon chips collecting device (6) comprises a guide rod (601), a first slidable mounting ring (602) is sleeved on the guide rod (601), the first mounting ring (602) is clamped on a limiting device (603), the limiting device (603) is arranged on the guide rod (601), a plurality of first support rods (604) arranged in an annular direction are rotatably connected to the first mounting ring (602), the middle position of the first support rod (604) is rotatably connected to the top end of the second support rod (605), and the bottom end of the second support rod (605) is rotatably connected to the guide rod (601). The bottom end of the first support rod (604) is hung with a filter screen (606), the center of the filter screen (606) is provided with a circular collecting port (606-1), the collecting port (606-1) is provided with an annular threaded ring (607), the threaded ring (607) is threadedly connected with a sealing cover (608), a conical scraping silicon ring (609) is provided above the filter screen (606), the silicon ring (609) is in contact with the inner wall of the centrifugal filter barrel (4), and the scraping silicon ring (609) is connected to the guide rod (601) through a plurality of connecting rods (610).

2. The silicon-containing waste liquid treatment device according to claim 1, characterized in that: The lifting device (7) comprises a bracket (701), the bracket (701) is arranged at the top end of the collecting bucket (2), a guide groove (702) is arranged at the center position of the bracket (701), a rack (703) is arranged in the guide groove (702), the bottom end of the rack (703) is connected to the top end of the guide rod (601), the rack (703) is meshed with a gear (704), the gear (704) is fixedly connected to the output end of the second motor (705), and the second motor (705) is arranged on the bracket (701).

3. The silicon-containing waste liquid treatment device according to claim 1, characterized in that: The limiting device (603) comprises a guide hole (603-1), wherein the guide hole (603-1) is arranged on the guide rod (601), wherein a spring (603-2) is arranged in the guide hole (603-1), wherein one end of the spring (603-2) abuts against the bolt (603-3), and the other end abuts against the limiting block (603-4), wherein the bolt (603-3) is threadedly engaged with the guide hole (603-1), wherein the limiting block (603-4) is slidably arranged in the guide hole (603-1), and wherein the limiting block (603-4) is snap-engaged with the first mounting ring (602).

4. The silicon-containing waste liquid treatment device according to claim 1, characterized in that: A hook (611) is provided at the bottom end of the first support rod (604).

5. The silicon-containing waste liquid treatment device according to claim 4, characterized in that: The edge of the filter screen (606) is provided with a plurality of hanging rings (606-2) corresponding to the hook (611), and the hanging rings (606-2) are hung on the hook (611).

6. The silicon-containing waste liquid treatment device according to claim 1, characterized in that: The bottom end of the guide rod (601) is provided with a second mounting ring (612), and the bottom end of the second support rod (605) is rotatably connected to the second mounting ring (612).

7. The silicon-containing waste liquid treatment device according to claim 1, characterized in that: The barrel cover (5) comprises a pair of symmetrical cover plates (501), one end of the two cover plates (501) being rotatably connected, and the other end being connected via a snap-fit ​​device (502), and a groove (503) for facilitating the passage of the guide rod (601) is provided at the middle position of the two cover plates (501).

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