A semiconductor tin-silver-copper waste liquid treatment and recycling device

Abstract

This utility model relates to the field of waste liquid treatment and recycling devices, and discloses a semiconductor tin-silver-copper waste liquid treatment and recycling device, including a box body. A fixing plate is fixedly connected to the outside of the box body. Four support columns are fixedly connected to the bottom of the fixing plate. An input pipe is fixedly connected to the top of the box body. A waste pipe is fixedly connected to the bottom of the box body. A fixing box is fixedly connected to the top of the box body. A stirring motor is fixedly connected inside the fixing box. A stirring shaft is fixedly connected to the output end of the stirring motor. Three stirrers are fixedly connected to the middle of the stirring shaft. Two collection hoppers are fixedly connected to the bottom of the stirring shaft. A filter screen is fixedly connected inside the box body. In this utility model, by starting the stirring motor, the stirring shaft is driven to rotate. The collection hoppers and storage box rotate with the stirring shaft, collecting the fixed impurities on the filter screen, realizing dynamic anti-clogging and reducing the loss of metal in the waste liquid.

Description

Technical Field

[0001] This utility model relates to the field of waste liquid treatment and recycling devices, and in particular to a semiconductor tin-silver-copper waste liquid treatment and recycling device. Background Technology

[0002] Waste liquid treatment and recycling equipment refers to a device specifically designed to treat various types of waste liquids, recover valuable substances from them, or bring the waste liquids up to environmental emission standards. "Semiconductor" indicates the source of the waste liquid, meaning it originates from semiconductor-related manufacturing processes. "Containing tin, silver, and copper" further clarifies the main metallic components in the waste liquid. Tin, silver, and copper are all metals with high economic value and recycling significance. These metallic elements may be present in some chemical materials and plating solutions used in semiconductor production. Therefore, one of the key tasks in waste liquid treatment and recycling equipment is to separate and recover these metals from the waste liquid, achieving resource reuse and reducing environmental pollution.

[0003] The existing waste liquid treatment and recovery device includes a tank, a fixed plate, a support column, an input pipe, a waste pipe, a fixed box, a stirring motor, a stirring shaft, a stirrer, a filter screen, a distillation tank, a heater, and a condenser. Waste liquid is sent into the tank through the input pipe. The stirring motor drives the stirring shaft and the stirrer to stir the waste liquid, making the waste liquid evenly mixed. Then, the waste liquid is filtered through the filter screen. The filtered liquid flows into the distillation tank through the connecting pipe in the baffle plate. The heater heats and distills the liquid. The steam is condensed and recovered through the condenser. The distilled waste is discharged through the waste pipe.

[0004] In the semiconductor manufacturing process, a large amount of waste liquid containing valuable metals such as tin, silver, and copper is generated. Semiconductor tin-silver-copper waste liquid is not a pure solution containing only these three target metal components. It is often mixed with impurities such as residual photoresist from semiconductor production, fine particulate impurities generated from wafer cutting and polishing, precipitates generated after chemical reagent reactions, and trace debris from equipment wear. Impurities can cause blockages, affect the filtration speed of waste liquid, reduce the working efficiency of the device, and may also result in the purity of the recovered metal being far lower than the semiconductor recycling standard. Therefore, a semiconductor tin-silver-copper waste liquid treatment and recycling device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a semiconductor tin-silver-copper waste liquid treatment and recycling device, which aims to solve the problem of impurity collection in the device.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a semiconductor tin-silver-copper waste liquid treatment and recycling device, comprising a housing, a fixed plate fixedly connected to the outside of the housing, four support columns fixedly connected to the bottom of the fixed plate, an input pipe fixedly connected to the top of the housing, a waste pipe fixedly connected to the bottom of the housing, a fixed box fixedly connected to the top of the housing, a stirring motor fixedly connected inside the fixed box, a stirring shaft fixedly connected to the output end of the stirring motor, three stirrers fixedly connected to the middle of the stirring shaft, two collection hoppers fixedly connected to the bottom of the stirring shaft, and a filter screen fixedly connected inside the housing. Each of the two collection hoppers is fixedly connected to a storage box on its exterior. Two protective shells are fixedly connected to the top of each collection hopper, and a protective cap is threaded onto the top of each protective shell. Two fixing mechanisms are fixedly connected to the top of each collection hopper for fixing and disassembling the storage box. A baffle plate is fixedly connected inside the box, and a connecting pipe is fixedly connected inside the baffle plate. A distillation tank is fixedly connected to the end of the connecting pipe away from the baffle plate. A heater is fixedly connected inside the distillation tank. A condenser is fixedly connected to the top of the distillation tank, and a waste pipe is fixedly connected to the bottom of the distillation tank. A valve is installed in the middle of the waste pipe.

[0007] As a further description of the above technical solution: a bracket is fixedly connected to the bottom of the distillation tank, a protective box is fixedly connected to the bottom of the bracket, a drive motor is fixedly connected inside the protective box, a scraper is fixedly connected to the output end of the drive motor, and the scraper is slidably connected to the top of the bracket.

[0008] As a further description of the above technical solution: the top of the stirring shaft is rotatably connected to the inside of the box, the bottom of the collecting hopper is slidably connected to the top of the filter screen, the bottom of the collecting hopper has multiple small holes, and the bottom of the storage box has multiple small holes.

[0009] As a further description of the above technical solution: the bottom of the storage box is slidably connected to the top of the filter screen, and the bottom of the distillation tank is fixedly connected to the inside of the tank body.

[0010] As a further description of the above technical solution: the top of the waste pipe is fixedly connected to the bottom of the distillation tank, and the end of the condenser pipe away from the distillation tank is fixedly connected to the inside of the tank body.

[0011] As a further description of the above technical solution: the fixing mechanism includes a fixing shell, the bottom of which is fixedly connected to the top of the collecting hopper, a spring is fixedly connected inside the fixing shell, a limiting block is fixedly connected to the side of the spring away from the protective cover, and a pin is fixedly connected inside the limiting block.

[0012] As a further description of the above technical solution: the limiting block is externally slidably connected to the inside of the fixed shell, and the pin is externally slidably connected to the inside of the collecting hopper.

[0013] As a further description of the above technical solution: the protrusion of the pin through the storage box engages with the groove of the collection hopper, and a handle is fixedly connected to the top of the pin.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, by starting the stirring motor, the stirring shaft is driven to rotate, and the collection hopper and storage box rotate with the stirring shaft to collect the fixed impurities on the filter screen, thereby achieving dynamic anti-clogging and reducing the loss of metal in the waste liquid.

[0016] 2. In this utility model, by starting the drive motor, the scraper is driven to rotate. The scraper slides on the top of the support and can scrape the bottom of the distillation tank, thus cleaning the bottom of the distillation tank and making the distillation tank work stably. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of a semiconductor tin-silver-copper waste liquid treatment and recycling device proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the casing of a semiconductor tin-silver-copper waste liquid treatment and recycling device proposed in this utility model;

[0019] Figure 3 This is a schematic diagram of the collection hopper of a semiconductor tin-silver-copper waste liquid treatment and recycling device proposed in this utility model;

[0020] Figure 4 This is an enlarged view of point A in the semiconductor tin-silver-copper waste liquid treatment and recycling device proposed in this utility model;

[0021] Figure 5 This is a schematic diagram of the internal structure of the distillation tank of a semiconductor tin-silver-copper waste liquid treatment and recovery device proposed in this utility model.

[0022] Legend:

[0023] 1. Box body; 2. Fixing plate; 3. Support column; 4. Input pipe; 5. Waste pipe; 6. Fixing box; 7. Stirring motor; 8. Stirring shaft; 9. Stirrer; 10. Filter screen; 11. Collection hopper; 12. Storage box; 13. Protective shell; 14. Protective cover; 15. Fixing shell; 16. Spring; 17. Limiting block; 18. Pin rod; 19. Handle; 20. Baffle plate; 21. Connecting pipe; 22. Distillation tank; 23. Heater; 24. Condenser; 25. Bracket; 26. Scraper; 27. Protective box; 28. Drive motor; 29. ​​Valve. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Reference Figure 1 - Figure 4This utility model provides an embodiment of a semiconductor tin-silver-copper waste liquid treatment and recycling device, comprising a housing 1, which serves as the core housing space, providing a closed environment for the entire process of stirring, filtering, distillation, and recycling of the waste liquid, thus preventing waste liquid leakage and pollution. A fixing plate 2 is fixedly connected to the outside of the housing 1, fixing the position of the housing 1 and bearing its weight to ensure normal operation of the device. Four support columns 3 are fixedly connected to the bottom of the fixing plate 2, evenly distributing the weight of the device and lifting it off the ground to facilitate discharge from the waste pipe 5. An input pipe 4 is fixedly connected to the top of the housing 1, serving as the channel for the waste liquid to enter the housing 1, guiding the tin-silver-copper waste liquid precisely into the upper stirring zone of the housing 1. A waste pipe 5 is fixedly connected to the bottom of the housing 1 for discharging waste generated by the distillation tank 22. A fixing box 6 is fixedly connected to the top of the housing 1, fixing the stirring motor 7 and protecting it to ensure stable operation. A stirring motor 7 is fixedly connected inside the fixed box 6, providing power for the device's stirring. This allows the stirring shaft 8 and stirrer 9 to continuously agitate the waste liquid, accelerating solid-liquid separation and chemical reactions, thus increasing the processing speed. The output end of the stirring motor 7 is fixedly connected to the stirring shaft 8, providing a mounting base for the stirrer 9 and collection hopper 11, transmitting power from the stirring motor 7 to uniformly agitate the waste liquid. Three stirrers 9 are fixedly connected to the middle of the stirring shaft 8, providing multi-layered, three-dimensional agitation of the waste liquid within the box 1, ensuring thorough and uniform mixing. Two collection hoppers 11 are fixedly connected to the bottom of the stirring shaft 8, collecting filtered impurities and guiding them into the storage box 12, preventing impurities from accumulating on the surface of the filter screen 10. A filter screen 10 is fixedly connected inside the box 1, using its porous structure to intercept solid impurities in the waste liquid, allowing the clear liquid to flow through the mesh downwards for easy cleaning. Both collection hoppers 11 are fixedly connected to storage boxes 12 on their exteriors to collect impurities falling from the collection hoppers 11, serving as temporary storage spaces to concentrate the impurities and prevent them from scattering inside the device and contaminating the clarified liquid. Both collection hoppers 11 are fixedly connected to the tops of two protective shells 13, with protective covers 14 threaded onto the tops of the protective shells 13 to isolate the internal structure of the fixing mechanism from waste liquid and impurities, extending its lifespan. Both collection hoppers 11 are fixedly connected to the tops of two fixing mechanisms for fixing and disassembling the storage boxes 12. Inside the housing 1, a baffle plate 20 is fixedly connected, with a connecting pipe 21 fixedly connected inside the baffle plate 20. The baffle plate 20 separates the upper and lower spaces inside the housing 1, guiding the filtered clarified liquid into the connecting pipe 21 and then to the distillation tank 22, allowing the clarified liquid to flow in a directional manner and preventing unfiltered waste liquid from directly entering the distillation tank 22. The baffle plate 20 also buffers the impact of the waste liquid flow, stabilizing the liquid level inside the device.A distillation tank 22 is fixedly connected to the end of the connecting pipe 21 away from the baffle plate 20. A heater 23 is fixedly connected inside the distillation tank 22. The distillation tank 22 provides a distillation space for the clarified liquid. The heater 23 generates heat when energized, and separates different boiling point components in the waste liquid through distillation (such as recovering low-boiling-point solvents and enriching high-boiling-point metal ions), creating conditions for the precise recovery of precious metals such as tin, silver, and copper. The heat of the heater 23 is controllable and can be adapted to the distillation needs of different waste liquids. A condenser 24 is fixedly connected to the top of the distillation tank 22. The vapor generated by distillation enters the condenser 24, exchanges heat with the external cold air through the pipe wall, and recondenses into a liquid state. A valve 29 is installed in the middle of the waste pipe 5 to improve operational flexibility. When the valve 29 is closed, it ensures stable waste liquid treatment pressure inside the equipment.

[0026] Reference Figure 5 A bracket 25 is fixedly connected to the bottom of the distillation tank 22, providing a mounting base for the drive motor 28 and scraper 26. A protective box 27 is fixedly connected to the bottom of the bracket 25 to protect the drive motor 28 from damage by waste materials and ensure its stable operation. The drive motor 28 is fixedly connected inside the protective box 27, providing power to the scraper 26 to clean the inside of the distillation tank 22. The scraper 26 is fixedly connected to the output end of the drive motor 28, driving the scraper 26 to continuously scrape and keep the bottom of the tank clean. The scraper 26 is slidably connected to the top of the bracket 25, and slides along the top of the bracket 25 under the drive of the drive motor 28, which can scrape away these residual impurities in real time, avoiding manual disassembly and cleaning.

[0027] Reference Figure 2 , Figure 3 The top of the stirring shaft 8 is rotatably connected to the inside of the housing 1, effectively constraining the radial displacement of the stirring shaft 8 and ensuring that it always rotates stably along the axis. The bottom of the collecting hopper 11 is slidably connected to the top of the filter screen 10. When the collecting hopper 11 rotates with the stirring shaft 8, it gathers the dispersed impurities on the surface of the filter screen 10 towards the center, guiding the impurities to fall precisely into the collecting hopper 11, and then guiding them into the storage box 12 through the funnel structure of the collecting hopper 11. The bottom of the collecting hopper 11 and the bottom of the storage box 12 have multiple small holes. Waste liquid flows out of the collecting hopper 11 and the storage box 12 through the small holes, preventing the accumulation of impurities in the collecting hopper 11 and the storage box 12 from forming a closed space, which would prevent subsequent impurities from falling in smoothly, thus ensuring the continuity of the collection process.

[0028] Reference Figure 2The bottom of the storage box 12 is slidably connected to the top of the filter screen 10. During waste liquid filtration, impurities are concentrated towards the filter screen 10 due to the liquid flow and stirring. The storage box 12, through its sliding connection, can flexibly adjust its position to fit the surface of the filter screen 10, accurately catching the impurities collected in the collection hopper 11. The bottom of the distillation tank 22 is fixedly connected to the inside of the tank body 1. The structural strength of the tank body 1 provides stable support for the distillation tank 22. During waste liquid treatment, the distillation tank 22 will vibrate due to heating. Being fixed inside the tank body 1 can offset some of the vibration, preventing the distillation tank 22 from shifting or shaking, and ensuring the stability of the distillation process.

[0029] Reference Figure 1 , Figure 2 The top of the waste pipe 5 is fixedly connected to the bottom of the distillation tank 22 to prevent the connection between the waste pipe 5 and the distillation tank 22 from loosening or detaching due to frequent stress, thus ensuring stable operation of the device. The end of the condenser pipe 24 away from the distillation tank 22 is fixedly connected to the inside of the tank body 1, making the condenser pipe 24 and the tank body 1 form a rigid whole, preventing the condenser pipe 24 from loosening or shifting due to its own weight, steam flow impact, or device vibration.

[0030] Reference Figure 3 , Figure 4 The fixing mechanism includes a fixing shell 15, which provides a closed space for the pin 18, spring 16, and limiting block 17, restricting the displacement of internal components and ensuring that the storage box 12 is always stably connected to the collection hopper 11. The bottom of the fixing shell 15 is fixedly connected to the top of the collection hopper 11 to prevent the fixing shell 15 from loosening or shifting due to force, and to ensure the stability of the positions of components such as the spring 16, limiting block 17, and pin 18 inside the fixing shell 15. The spring 16 is fixedly connected inside the fixing shell 15, and its elastic force continuously pushes the limiting block 17 and pin 18, allowing the pin 18 to pass through the protrusion of the storage box 12 and the groove of the collection hopper 11. The limiting block 17 is fixedly connected to the side of the spring 16 away from the protective cover 14, restricting the direction of movement of the pin 18, ensuring that the pin 18 can only move in a straight line in the horizontal direction, ensuring that the pin 18 accurately passes through the protrusion of the storage box 12 and is engaged in the groove of the collection hopper 11, avoiding fixing failure due to misalignment of the pin 18, and preventing the storage box 12 from loosening or falling off during equipment vibration. The limiting block 17 is internally fixedly connected to a pin 18. The pin 18 is driven by the elastic force of the spring 16 and can accurately pass through the protrusion of the storage box 12 and engage with the groove of the collection hopper 11 to form a mechanical lock.

[0031] Reference Figure 4The limiting block 17 is externally slidably connected to the inside of the fixed shell 15, providing precise guidance for the extension and retraction of the spring 16. This prevents the spring 16 from tilting or twisting due to uneven force, and also ensures that the pin 18 always moves in a straight line, ensuring its precise insertion into the engaging position. This stabilizes and secures the storage box 12, preventing displacement of the storage box 12 during equipment operation and thus preventing impurity leakage. The pin 18 is externally slidably connected to the inside of the collecting hopper 11, allowing the pin 18 to be smoothly pulled out without overcoming additional frictional resistance, facilitating the fixing and disassembly of the storage box 12.

[0032] Reference Figure 4 The pin 18 passes through the protrusion of the storage box 12 and engages with the groove of the collection hopper 11, locking the collection hopper 11 and the storage box 12 tightly to prevent the storage box 12 from shifting or loosening due to device vibration or impurity impact. A handle 19 is fixedly connected to the top of the pin 18, which facilitates the operator to fix and remove the storage box 12, reducing daily maintenance time.

[0033] Working principle: Waste liquid containing tin, silver, and copper is fed into the tank 1 through the input pipe 4. The stirring motor 7 is started, driving the stirring shaft 8 to rotate. The three agitators 9 on the stirring shaft 8 rotate accordingly, stirring the waste liquid in the tank 1 to ensure uniform mixing, preparing it for subsequent treatment. Under the action of gravity, the waste liquid passes through the filter screen 10. The filter screen 10 filters the waste liquid, trapping solid impurities above it. The filtered liquid flows into the area below through the holes of the filter screen 10. The collection hopper 11 is used to assist in collecting the solid impurities remaining on the filter screen 10 after filtration. The storage box 12 outside the two collection hoppers 11 stores solid impurities to prevent the filter screen 10 from clogging. In the fixing mechanism, the spring 16, the limiting block 17, and the pin 18 cooperate. The pin 18 passes through the protrusion of the storage box 12 and engages with the groove of the collection hopper 11 to fix the storage box 12. The pin 18 can be pulled by the handle 19 to release the fixation and disassemble the storage box 12 for cleaning. The filtered liquid flows into the distillation tank 22 through the connecting pipe 21 inside the baffle plate 20. The heater 23 inside the distillation tank 22 operates to heat and distill the liquid. The steam generated during distillation is condensed through the condenser 24, achieving the separation and recovery of substances.

[0034] Start the drive motor 28 at the bottom of the distillation tank 22. The output end drives the scraper 26 to rotate. The scraper 26 slides on the top of the bracket 25 and can scrape the bottom of the distillation tank 22 to facilitate the cleaning of distillation residue. The protective box 27 protects the drive motor 28. The waste pipe 5 at the bottom of the distillation tank 22 is controlled by the valve 29 to discharge solid waste generated during the process.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A semiconductor tin-silver-copper waste liquid treatment and recycling device, comprising a housing (1), characterized in that: A fixing plate (2) is fixedly connected to the outside of the box (1). Four support columns (3) are fixedly connected to the bottom of the fixing plate (2). An input pipe (4) is fixedly connected to the top of the box (1). A waste pipe (5) is fixedly connected to the bottom of the box (1). A fixing box (6) is fixedly connected to the top of the box (1). A stirring motor (7) is fixedly connected inside the fixing box (6). A stirring shaft (8) is fixedly connected to the output end of the stirring motor (7). Three stirrers (9) are fixedly connected to the middle of the stirring shaft (8). Two collection hoppers (11) are fixedly connected to the bottom of the stirring shaft (8). A filter screen (10) is fixedly connected inside the box (1). Storage boxes (12) are fixedly connected to the outside of both collection hoppers (11). Two protective shells (13) are fixedly connected to the top of each of the two collection hoppers (11). The top of each protective shell (13) is threaded with a protective cover (14). Two fixing mechanisms are fixedly connected to the top of each of the two collection hoppers (11). The fixing mechanisms are used to fix and disassemble the storage box (12). A baffle plate (20) is fixedly connected inside the box (1). A connecting pipe (21) is fixedly connected inside the baffle plate (20). A distillation tank (22) is fixedly connected to the end of the connecting pipe (21) away from the baffle plate (20). A heater (23) is fixedly connected inside the distillation tank (22). A condenser pipe (24) is fixedly connected to the top of the distillation tank (22). A waste pipe (5) is fixedly connected to the bottom of the distillation tank (22). A valve (29) is provided in the middle of the waste pipe (5).

2. The semiconductor tin-silver-copper waste liquid treatment and recycling device according to claim 1, characterized in that: A bracket (25) is fixedly connected to the bottom of the distillation tank (22), and a protective box (27) is fixedly connected to the bottom of the bracket (25). A drive motor (28) is fixedly connected inside the protective box (27), and a scraper (26) is fixedly connected to the output end of the drive motor (28). The scraper (26) is slidably connected to the top of the bracket (25).

3. The semiconductor tin-silver-copper waste liquid treatment and recycling device according to claim 1, characterized in that: The top of the stirring shaft (8) is rotatably connected to the inside of the box (1), the bottom of the collecting hopper (11) is slidably connected to the top of the filter screen (10), the bottom of the collecting hopper (11) has multiple small holes, and the bottom of the storage box (12) has multiple small holes.

4. The semiconductor tin-silver-copper waste liquid treatment and recycling device according to claim 1, characterized in that: The bottom of the storage box (12) is slidably connected to the top of the filter screen (10), and the bottom of the distillation tank (22) is fixedly connected to the inside of the box body (1).

5. The semiconductor tin-silver-copper waste liquid treatment and recycling device according to claim 1, characterized in that: The top of the waste pipe (5) is fixedly connected to the bottom of the distillation tank (22), and the end of the condenser pipe (24) away from the distillation tank (22) is fixedly connected to the inside of the tank body (1).

6. The semiconductor tin-silver-copper waste liquid treatment and recycling device according to claim 1, characterized in that: The fixing mechanism includes a fixing shell (15), the bottom of which is fixedly connected to the top of the collecting hopper (11). A spring (16) is fixedly connected inside the fixing shell (15). A limiting block (17) is fixedly connected to the side of the spring (16) away from the protective cover (14). A pin (18) is fixedly connected inside the limiting block (17).

7. The semiconductor tin-silver-copper waste liquid treatment and recycling device according to claim 6, characterized in that: The limiting block (17) is externally slidably connected to the inside of the fixed shell (15), and the pin (18) is externally slidably connected to the inside of the collecting hopper (11).

8. The semiconductor tin-silver-copper waste liquid treatment and recycling device according to claim 6, characterized in that: The pin (18) passes through the protrusion of the storage box (12) and engages with the groove of the collection hopper (11). A handle (19) is fixedly connected to the top of the pin (18).

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