Environment-friendly silicon waste purification device

Abstract

The utility model discloses an environment-friendly silicon waste purification device, which relates to the technical field of silicon waste treatment and comprises a shell, a gas collecting pipe penetrates through the middle of the top end of the shell, an activated carbon net is clamped in the middle of the inner wall of the gas collecting pipe, a water inlet pipe penetrates through one side of the top end of the shell, and an annular pipe is sleeved at the bottom end of the water inlet pipe. A plurality of nozzles are fixedly installed at the bottom end of the annular pipe, a net frame is arranged in the shell, connecting rods are fixedly connected to the four corners of the top end of the net frame, a feeding hopper penetrates through the middle of the front face of the shell, and a first turning plate is hinged to a feeding opening of the feeding hopper. By arranging a series of structures, the waste of silicon elements in the silicon waste is reduced, the purification effect of the silicon waste is improved, generated hydrogen sulfide gas can enter the gas collecting pipe in a concentrated mode to be collected and preliminarily treated, the probability of atmospheric pollution caused when the device is used is reduced, and the device is more environmentally friendly.

Description

Technical Field

[0001] The utility model relates to the technical field of silicon waste treatment, in particular to an environmentally friendly silicon waste purification device. Background Art

[0002] Silicon waste refers to materials such as silicon powder and silicon slag generated during the silicon industrial preparation process. Since there will be a certain amount of loss in the processing of silicon materials, waste materials such as silicon powder and silicon slag will be generated. In order to reduce the loss rate of silicon material processing, purification equipment is usually used to collect the generated silicon waste and purify it, so that the silicon element can be extracted from the waste, while other metal elements and impurities are left in the waste.

[0003] However, when the existing silicon waste purification device purifies the silicon waste, the silicon waste is usually directly immersed in an acid solution, and after the precipitate is produced by the acid leaching, it is directly taken out from the device, so that the silicon element that precipitates on the surface of the silicon waste but does not have time to precipitate is more likely to remain on the surface of the waste, resulting in a waste of silicon elements and a poor purification effect of the silicon waste. In addition, when the existing silicon waste purification device leaches the waste with acid, since acid leaching is to extract the silicon element in the silicon waste through a chemical reaction, toxic gases such as hydrogen sulfide will be generated during the process, and the traditional purification device is not a fully enclosed structure, so that the hydrogen sulfide gas is more likely to cause air pollution after escaping from the device, which is not environmentally friendly. Utility Model Content

[0004] The purpose of the utility model is to provide an environmentally friendly silicon waste purification device to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an environmentally friendly silicon waste purification device, comprising an outer shell, a gas collecting pipe is penetrated in the middle of the top of the outer shell, an activated carbon net is clamped in the middle of the inner wall of the gas collecting pipe, a water inlet pipe is penetrated on one side of the top of the outer shell, an annular tube is sleeved on the bottom end of the water inlet pipe, a plurality of nozzles are fixedly installed on the bottom end of the annular tube, a mesh frame is provided inside the outer shell, connecting rods are fixedly connected at the four corners of the top of the mesh frame, a feed hopper is penetrated in the middle of the front of the outer shell, a first flap is hinged at the feed port of the feed hopper, a discharge hopper is penetrated at the top of one side wall of the outer shell, a second flap is hinged at the discharge port of the discharge hopper, and the bottom of the inner side of the outer shell is filled with acid liquid.

[0006] Preferably, cylinders are fixedly mounted at the four corners of the top of the shell, the output end of the cylinder is fixedly connected to the top of the connecting rod, and the net frame is movably connected to the shell through the connecting rod.

[0007] Preferably, the front side and both side walls of the net frame are provided with openings, and the openings are movably connected to the feed hopper and the discharge hopper respectively.

[0008] Preferably, the bottom of the front side of the housing is respectively penetrated by a liquid inlet pipe and a liquid discharge pipe, and electromagnetic valves are fixedly installed in the middle of the liquid inlet pipe and the liquid discharge pipe.

[0009] Preferably, a hydraulic cylinder is fixedly installed at the top of the other side wall of the housing, and a push plate is engaged with the output end of the hydraulic cylinder.

[0010] Preferably, the push plate is movably embedded and connected to the inner wall of the housing, and the push plate is movably connected to the wire frame.

[0011] Preferably, the gas collecting pipe communicates with the inside of the housing.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. In this environmental protection type silicon waste purification device, through the wire frame, connecting rod, annular pipe and nozzle, after the silicon waste is acid-leached, it can be washed with water in the device, so that the silicon element precipitated but remaining on the surface of the waste can fall back into the device under the flushing of the water flow for subsequent precipitation, and the silicon waste can be repeatedly acid-leached and washed under the action of the wire frame, thereby reducing the waste of silicon element in the silicon waste and improving the purification effect of the silicon waste.

[0014] 2. In this environmental protection type silicon waste purification device, through the first flap and the second flap, the openings on the feeding hopper and the discharging hopper are in a closed state during the purification process of the device, so that the whole device maintains a better closed state, thereby reducing the probability of hydrogen sulfide gas generated during acid leaching escaping from the device. Together with the gas collecting pipe and the activated carbon net, the generated hydrogen sulfide gas can be concentrated and enter the gas collecting pipe for collection and preliminary treatment, thereby reducing the probability of air pollution caused by the device during use and being more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0016] Figure 2 is a schematic diagram of the annular pipe and nozzle structure of the present utility model;

[0017] Figure 3 is a schematic diagram of the gas collecting pipe and activated carbon net structure of the present utility model;

[0018] Figure 4 is a schematic diagram of the feeding hopper and discharging hopper structure of the present utility model;

[0019] Figure 5 is a schematic diagram of the wire frame structure of the present utility model.

[0020] In the figure: 1. Outer shell; 2. Collector pipe; 3. Cylinder; 4. Water inlet pipe; 5. Feed hopper; 6. First flap; 7. Discharge hopper; 8. Second flap; 9. Liquid inlet pipe; 10. Drain pipe; 11. Solenoid valve; 12. Activated carbon net; 13. Annular pipe; 14. Nozzle; 15. Mesh frame; 16. Acid solution; 17. Hydraulic cylinder; 18. Pusher plate; 19. Connecting rod; 20. Opening. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] Such as Figures 1 to 5As shown in the figure, the environmental protection type silicon waste purification device of this embodiment includes a housing 1. A gas collecting pipe 2 penetrates through the middle of the top of the housing 1. An activated carbon net 12 is clamped in the middle of the inner wall of the gas collecting pipe 2. A water inlet pipe 4 penetrates through one side of the top of the housing 1. The bottom end of the water inlet pipe 4 is sleeved with an annular pipe 13. A plurality of nozzles 14 are fixedly installed at the bottom end of the annular pipe 13. A wire frame 15 is arranged inside the housing 1. Connecting rods 19 are fixedly connected to the four corners of the top of the wire frame 15. A feed hopper 5 penetrates through the middle of the front of the housing 1. A first flap 6 is hinged at the feed inlet of the feed hopper 5. A discharge hopper 7 penetrates through the top of one side wall of the housing 1. A second flap 8 is hinged at the discharge outlet of the discharge hopper 7. Acid solution 16 is filled at the bottom inside the housing 1.

[0025] Specifically, the housing 1 is of a cuboid structure with a hollow interior, enabling the wire frame 15 to slide smoothly up and down inside the housing 1. The gas collecting pipe 2 is arranged at the top of the housing 1, facilitating the entry of hydrogen sulfide gas flowing upward during acid leaching, thus facilitating the collection of poisonous gases such as hydrogen sulfide generated during acid leaching. The activated carbon net 12 can adsorb hydrogen sulfide gas on its surface, realizing the preliminary harmless treatment of hydrogen sulfide gas. The water inlet pipe 4 is used to introduce pure water, enabling the silicon waste after acid leaching to be rinsed, so that the silicon element precipitated but remaining on the surface of the waste can be washed into the bottom of the device by the water flow for precipitation, thereby reducing the waste of silicon element in the waste. The function of the annular pipe 13 is to enable the water flow to spray around the top of the wire frame 15, so that the range of water flow flushing can cover a larger range, facilitating the rinsing of the silicon waste in the wire frame 15. The wire frame 15 is of a cube structure with a hollow interior, and wire meshes are provided at both the top and the bottom. Its function is to enable the silicon waste placed in the wire frame 15 to contact the acid solution 16, thereby realizing the acid leaching of the silicon waste. At the same time, it can press all the silicon waste into the acid solution 16, preventing the silicon waste from not being completely immersed in the acid solution 16, and also enabling the silicon waste to rise and fall flexibly, facilitating the subsequent repeated rinsing and acid leaching of the silicon waste, thus facilitating the improvement of the purification effect of the silicon waste. The first flap 6 is adapted to the size of the feed inlet of the feed hopper 5, and the second flap 8 is adapted to the size of the discharge outlet of the discharge hopper 7, enabling the feed hopper 5 and the discharge hopper 7 to remain closed when not in use, thus facilitating the maintenance of the closed state of the entire purification device, reducing the probability of hydrogen sulfide gas generated during acid leaching and purification escaping from the device, and making the purification device more environmentally friendly during use.

[0026] Furthermore, cylinders 3 are fixedly installed at the four corners of the top of the housing 1. The output ends of the cylinders 3 are fixedly connected to the top ends of the connecting rods 19. The wire frame 15 is movably connected to the housing 1 through the connecting rods 19. The four corners of the wire frame 15 are connected to the cylinders 3 through the connecting rods 19, enabling the wire frame 15 to rise and fall inside the housing 1, thus facilitating the device to complete actions such as feeding, acid leaching, rinsing, and discharging.

[0027] Furthermore, openings 20 are provided on the front and both side walls of the frame 15. The openings 20 are respectively movably connected to the feed hopper 5 and the discharge hopper 7. The openings 20 enable the silicon waste entering from the feed hopper 5 to smoothly enter the frame 15, and at the same time, be pushed from the frame 15 towards the discharge hopper 7, thereby realizing the feeding and discharging actions of the device.

[0028] Furthermore, a liquid inlet pipe 9 and a liquid discharge pipe 10 respectively penetrate through the bottom of the front surface of the housing 1. Solenoid valves 11 are fixedly installed in the middle of the liquid inlet pipe 9 and the liquid discharge pipe 10. The liquid inlet pipe 9 can timely supplement the acid solution 16 into the device, and the liquid discharge pipe 10 can discharge the solid precipitates formed after precipitation at the bottom of the device, as well as the waste liquid after use.

[0029] Furthermore, a hydraulic cylinder 17 is fixedly installed at the top of the other side wall of the housing 1. A push plate 18 is engaged with the output end of the hydraulic cylinder 17. The push plate 18 is a rectangular plate with relatively high hardness, and at the same time, its size is adapted to the size of the opening 20 on the back surface of the frame 15.

[0030] Furthermore, the push plate 18 is movably embedded and connected to the inner wall of the housing 1, and the push plate 18 is movably connected to the frame 15. When the push plate 18 is in the initial state, one side wall is flush with the inner wall of the housing 1, enabling the frame 15 to smoothly slide to the horizontal height where the push plate 18 is located. At the same time, after the hydraulic cylinder 17 is started, the push plate 18 can extend into the frame 15 and push the silicon waste in the frame 15 towards the discharge hopper 7.

[0031] Furthermore, the gas collecting pipe 2 is communicated with the inside of the housing 1, enabling the hydrogen sulfide gas generated inside the housing 1 to be smoothly collected and subsequently processed, making the purification device more environmentally friendly during use.

[0032] The usage method of this embodiment is as follows: When using this silicon waste purification device, first start the cylinder 3, so that the cylinder 3 drives the connecting rod 19 to move, driving the opening 20 on the front of the mesh frame 15 to move to a position that coincides with the connection between the feed hopper 5 and the outer shell 1. Then, silicon waste can be poured into the feed hopper 5. After the feeding is completed, turn down the first flap 6 to close the feed inlet of the feed hopper 5. Then, the cylinder 3 will drive the connecting rod 19, the mesh frame 15, and the silicon waste in the mesh frame 15 to sink into the acid solution 16, so that all the silicon waste is immersed in the acid solution 16. At this time, the silicon element in the silicon waste will be precipitated and immersed in the acid solution 16, and then solid precipitates will be formed in the acid solution 16. At the same time, the hydrogen sulfide gas generated during acid leaching will enter the gas collecting pipe 2, and then pass through the activated carbon mesh 12, so that the hydrogen sulfide is preliminarily treated. Then, it will enter the gas treatment equipment through the gas collecting pipe 2 for subsequent treatment. After the silicon waste is completed with acid leaching, the cylinder 3 will drive the mesh frame 15 to rise. Then, water is introduced into the water inlet pipe 4, so that the water flows out from the nozzles 14 at the bottom of the annular pipe 13 along the annular pipe 13, flushing the silicon waste in the mesh frame 15, so that the silicon element precipitated but remaining on the surface of the silicon waste re-enters the acid solution 16 with the water flow for subsequent precipitation. After the silicon waste is completed with acid leaching and flushing, the cylinder 3 will drive the mesh frame 15 to continue to rise, so that the openings 20 on both side walls of the mesh frame 15 are flush with the push plate 18 and the discharge hopper 7 respectively. Then, start the hydraulic cylinder 17, so that the push plate 18 is pushed into the mesh frame 15 through the opening 20, pushing the silicon waste in the mesh frame 15 towards the discharge hopper 7, so that the silicon waste is discharged from the discharge hopper 7. Finally, the solenoid valve 11 of the drain pipe 10 can be opened, so that the waste liquid and solid precipitates in the outer shell 1 are discharged from the outer shell 1 through the drain pipe 10.

[0033] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An environmentally friendly silicon waste purification device, comprising a housing (1), characterized in that: A gas collecting pipe (2) is passed through the middle of the top of the shell (1), and an activated carbon net (12) is clamped in the middle of the inner wall of the gas collecting pipe (2). A water inlet pipe (4) is passed through one side of the top of the shell (1), and a ring tube (13) is sleeved on the bottom end of the water inlet pipe (4). A plurality of nozzles (14) are fixedly installed on the bottom end of the ring tube (13). A mesh frame (15) is provided inside the shell (1), and connecting rods (19) are fixedly connected at the four corners of the top of the mesh frame (15). A feed hopper (5) is passed through the middle of the front of the shell (1), and a first flap (6) is hinged at the feed inlet of the feed hopper (5). A discharge hopper (7) is passed through the top of one side wall of the shell (1), and a second flap (8) is hinged at the discharge outlet of the discharge hopper (7). The bottom of the inner side of the shell (1) is filled with acid liquid (16).

2. The environmentally friendly silicon waste purification device according to claim 1, characterized in that: Cylinders (3) are fixedly mounted at the four corners of the top of the housing (1); the output end of the cylinder (3) is fixedly connected to the top of the connecting rod (19); and the net frame (15) is movably connected to the housing (1) via the connecting rod (19).

3. The environmentally friendly silicon waste purification device according to claim 1, characterized in that: The front surface and two side walls of the net frame (15) are provided with openings (20), and the openings (20) are movably connected to the feed hopper (5) and the discharge hopper (7) respectively.

4. The environmentally friendly silicon waste purification device according to claim 1, characterized in that: A liquid inlet pipe (9) and a liquid discharge pipe (10) are respectively passed through the bottom of the front side of the housing (1), and a solenoid valve (11) is fixedly installed in the middle of each of the liquid inlet pipe (9) and the liquid discharge pipe (10).

5. The environmentally friendly silicon waste purification device according to claim 1, characterized in that: A hydraulic cylinder (17) is fixedly mounted on the top of the other side wall of the housing (1), and a push plate (18) is engaged with the output end of the hydraulic cylinder (17).

6. The environmentally friendly silicon waste purification device according to claim 5, characterized in that: The push plate (18) is movably embedded in the inner wall of the outer shell (1), and the push plate (18) is movably connected to the screen frame (15).

7. The environmentally friendly silicon waste purification device according to claim 1, characterized in that: The gas collecting pipe (2) is in communication with the interior of the outer shell (1).

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