Electrolytic waste liquid treatment device for processing of metal indium

Abstract

The application provides an electrolytic waste liquid treatment device for processing metal indium, and relates to the technical field of electrolytic waste liquid treatment devices.The device comprises a first purification assembly and a second purification assembly.The first purification assembly uses electrolysis to precipitate metal elements in waste liquid, and the second purification assembly uses chemical precipitation to perform secondary purification on the waste liquid.The first purification assembly comprises an electrolytic plate, and an electrolytic plate scraping component is arranged above the electrolytic plate.The electrolytic plate scraping component is provided with a scraper.The scraper maintains constant contact pressure with the surface of the electrolytic plate through a mechanical locking mechanism when moving downward, thereby ensuring effective stripping of solid substances deposited by electrolysis.When the scraper moves upward, the rigid constraint is released during the upward movement, so that the scraper has a self-adaptive avoidance function and unnecessary collisions with residual substances on the plate surface are avoided.Therefore, the effect of scraping off the solid substances adhering to the electrolytic plate by the scraper is ensured, and invalid collisions of the scraper are avoided.

Description

Technical Field

[0001] This invention relates to the technical field of electrolytic waste liquid treatment devices, and in particular to an electrolytic waste liquid treatment device for indium metal processing. Background Technology

[0002] Electrolytic wastewater generated during indium metal production mainly contains high concentrations of heavy metal ions, including harmful elements such as cadmium (Cd), thallium (Tl), copper (Cu), lead (Pb), zinc (Zn), and arsenic (As). Cadmium and thallium, due to their high toxicity and tendency to bioaccumulate, require intensive treatment. Treatment of this type of wastewater typically employs a combination of processes, either synergistically or individually, including electrolytic purification, chemical precipitation, physical separation, and electrochemical technologies, to achieve water resource recycling, reduce industrial pollution, and minimize the environmental damage caused by industrial production. The electrolytic process usually involves feeding pretreated wastewater into an electrolysis system using a multi-stage electrolytic cell design. By controlling the current density and electrolyte flow rate, metal ions in the wastewater are precipitated. However, these precipitated metal elements tend to accumulate near the electrolytic plates, thus reducing the speed and effectiveness of the electrolysis plates in treating other wastewater.

[0003] The technical content disclosed in the Chinese patent document (publication number: CN215713434U, patent name: an electrolysis device for electrolysis purification process of copper electrolyte) is as follows: It includes an electrolysis box, a locking groove on the top of the electrolysis box, a top frame movably installed inside the locking groove, a vacuum pump on the top of the top frame, a purifier on the outer wall of the exhaust pipe of the vacuum pump, four limiting blocks symmetrically installed on the inner wall of the electrolysis box, a cover plate movably installed inside the electrolysis box, an exhaust hole on the top of the cover plate, and electrode plates fixedly installed inside the electrolysis box. A scraper frame is pulled and slides back and forth on the outer wall of the electrode plates. Two scrapers on the outer wall of the fixed frame can scrape off the material on the surface of the electrode plates. A guide plate contacts the outer wall of the electrode plates. When the scraper scrapes off the material on the surface of the electrode plates, the material falls onto the guide plate and slides down along the surface of the guide plate into the inner frame for collection. This facilitates the collection of debris scraped off the surface of the electrode plates by the scraper, preventing debris from accumulating inside the electrolysis box.

[0004] As can be seen from the above implementation scheme and the corresponding drawings, the electrolysis device is equipped with a scraper frame to scrape off the metal attached to the electrode sheet, so that the electrode sheet can be electrolyzed better. However, the scraper frame can only be pushed manually, and there is no mechanism to press the scraper frame tightly against the electrode sheet. Therefore, it may affect the scraping effect, resulting in residual deposits on the electrode sheet, which prevents the electrode sheet from being used optimally. Summary of the Invention

[0005] This invention overcomes the shortcomings of existing technologies and provides an electrolytic waste liquid treatment device for indium metal processing. It features a scraper that can move along the height of the electrolytic plate. During its downward movement, the scraper maintains a constant contact pressure with the electrolytic plate surface through a mechanical locking mechanism, ensuring effective removal of electrolytically deposited solids. When the scraper moves upward, the rigid constraint is released, giving it an adaptive avoidance function to prevent unnecessary collisions with residues on the plate surface. Therefore, it effectively removes solids adhering to the electrolytic plate while avoiding ineffective collisions, significantly reducing mechanical wear while maintaining the cleanliness of the electrolytic plate surface and extending the scraper's service life. This device enables high efficiency in removing adhering substances from the electrolytic plate surface and ensures the continuous stability of the waste liquid electrolytic purification process parameters.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0007] An electrolytic waste liquid treatment device for indium metal processing includes a first purification component and a second purification component. The first purification component uses electrolysis to precipitate the metal elements in the waste liquid, and the second purification component uses chemical precipitation to purify the waste liquid in a secondary manner.

[0008] The first purification component includes an electrolytic plate, an electrolytic plate scraping component is provided above the electrolytic plate, and the electrolytic plate scraping component is provided with scrapers. The scrapers are located on both sides of the electrolytic plate. When the scrapers move downward, a mechanical locking mechanism maintains a constant contact pressure with the surface of the electrolytic plate to ensure effective stripping of the electrolyzed solids. When the scrapers move upward, the rigid constraints are released, giving the scrapers an adaptive avoidance function to prevent unnecessary collisions with residues on the plate surface.

[0009] Furthermore, the electrolytic plate scraping component includes a lifting head, and the scraping lifting base moves back and forth along the vertical direction of the electrolytic plate. The scraping lifting base is connected to the scraper swing mechanism.

[0010] The scraper swing mechanism includes a swing base, the swing base is provided with a pin sliding groove and a rotating swing shaft, the rotating swing shaft is connected to a blade sleeve, the scraper is inserted into the blade sleeve, the blade sleeve is provided with a shaft hole and a locking slot, the pin sliding groove is slidably inserted with a scraper locking rod, the lower end of the scraper locking rod is provided with a locking pin, the lower end of the locking pin is inverted triangular shape;

[0011] When the locking pin is inserted into the locking slot, the relative position of the blade sleeve and the swing base is fixed, and at this time the blade edge of the scraper is in contact with the surface of the electrolytic plate.

[0012] When the locking pin is withdrawn from the locking slot until only the inverted triangular shape of the locking pin is in the locking slot, the tool holder can swing around the rotating pivot.

[0013] Furthermore, the electrolysis plate is detachably installed in the electrolysis chamber, and a cleaning installation main board is provided on the top of the electrolysis chamber;

[0014] The scraper locking rod is also provided with a plug rod, one end of which is connected to a locking pin, and the other end of which is provided with a lifting head. The outer diameter of the lifting head is larger than the outer diameter of the plug rod, and the lower end of the lifting head is provided with a spring.

[0015] The scraper lifting base is provided with a lifting spring groove. The end of the spring away from the lifting head is connected to the inner bottom surface of the lifting spring groove, and the lifting head is slidably inserted into the lifting spring groove.

[0016] Furthermore, a limiting transverse insertion port is provided on one side of the insertion rod;

[0017] The scraper lifting base is connected to a side angle limiting power mechanism, which includes a limiting power cylinder and a limiting pin.

[0018] When the scraper lifting base moves downward, the limit pin is inserted into the limit horizontal socket, and at this time the locking pin is inserted into the locking slot.

[0019] When the scraper lifting base moves to the lowest position, the limit pin is withdrawn from the limit horizontal socket. At this time, the lifting head protrudes from the upper surface of the scraper lifting base due to the spring force, thereby stretching the locking pin and causing it to disengage from the locking slot. Then, when the scraper lifting base moves back up and returns to the highest position, the upper surface of the scraper lifting base is attached to the lower surface of the cleaning and mounting motherboard. The lower surface of the cleaning and mounting motherboard presses the lifting head back into the lifting spring groove. At this time, the height of the limit horizontal socket is aligned with the limit pin, and the limit pin is inserted into the limit horizontal socket under the push of the limit power cylinder.

[0020] Furthermore, the cleaning mounting main board is connected to the second cylinder and the second linear bearing. The output end of the second cylinder is connected to the scraper lifting base, and the scraper lifting base is slidably connected to the second linear bearing.

[0021] Furthermore, the electrolysis tank includes a main tank, with two layers of central filter plates in the middle of the main tank. The lower end of the central filter plates is connected to an inclined plate. The end of the inclined plate that connects to the central filter plates is higher than the end that connects to the inner wall of the main tank. Two waste residue outlets are provided on both sides of the main tank. The waste residue outlets are located at the bottom of the inclined plates, and a waste residue extraction pump is connected to the outside of the waste residue outlets.

[0022] The lower end of the main body is inverted cone shape, and the inverted cone shape at the lower end of the main body is provided with a primary purification liquid outlet;

[0023] The electrolysis plate includes an electrolysis plate body, with fixed side grooves on both sides of the upper end of the electrolysis plate body. The fixed side grooves are attached to the side plates of the main body. The electrolysis plate is set on both sides of the two-layer middle filter plate. The electrolyzed liquid passes through the filter holes of the middle filter plate to the middle of the two-layer middle filter plate, and finally is discharged through the primary purified liquid outlet.

[0024] Furthermore, the cleaning mounting main board is also connected to a filter cleaning component, which includes a first cylinder and a first linear bearing, with the first cylinder connected to a cleaning lifting base;

[0025] The cleaning lifting base is equipped with a cleaning lifting rod, which is slidably connected to the first linear bearing.

[0026] The cleaning lifting base is also provided with a groove. When the cleaning lifting base is raised or lowered, the two middle filter plates are movably inserted into the groove.

[0027] The cleaning lifting base is connected to a cleaning drive motor and a brush. The cleaning drive motor is connected to a motor pulley, and the brush is connected to a rotating pulley. The motor pulley and the rotating pulley are connected by a belt. The cleaning drive motor drives the motor pulley to rotate, which in turn drives the brush to rotate.

[0028] Furthermore, the second purification component includes a purification reaction tank, an overflow baffle is provided near the upper end of the purification reaction tank, and a stirring shaft is provided inside the purification reaction tank.

[0029] The purification reaction tank includes a main tank body, the lower end of which is connected to an inverted cone tank body. A slag-separating cone is provided between the main tank body and the inverted cone tank body. Reaction liquid inlets and wastewater inlets are provided on both sides of the main tank body.

[0030] Waste outlet is provided on the bottom side of the inverted cone pool.

[0031] Furthermore, the stirring shaft is connected to a purification stirring motor. The stirring shaft includes a main shaft body, and several horizontal shafts are vertically connected to the main shaft body. The midpoint of each horizontal shaft is connected to the main shaft body. When viewed from the radial projection plane of the main shaft body, different horizontal shafts form an angle between them.

[0032] The horizontal axis is also equipped with paddles at both ends.

[0033] Furthermore, the overflow partition is provided with an overflow channel, which includes a first channel, a second channel, and a third channel that communicate with each other;

[0034] An overflow tank is also provided at the upper end of the main tank, and the overflow tank is connected to the purified liquid outlet;

[0035] The purified liquid overflows from the bottom of the overflow channel to the top of the overflow channel, then overflows into the overflow tank, and finally flows out through the purified liquid outlet.

[0036] Compared with the prior art, the beneficial effects of the present invention are:

[0037] 1. A device for treating electrolytic waste liquid in indium metal processing is provided, comprising a scraper that can move along the height of an electrolytic plate. During its downward movement, the scraper maintains a constant contact pressure with the electrolytic plate surface through a mechanical locking mechanism, ensuring effective removal of electrolytically deposited solids. When the scraper moves upward, the rigid constraint is released, enabling the scraper to have an adaptive avoidance function, preventing unnecessary collisions with residues on the plate surface. Therefore, this device ensures the effective removal of solids adhering to the electrolytic plate while avoiding ineffective collisions, significantly reducing mechanical wear while maintaining the cleanliness of the electrolytic plate surface and extending the scraper's service life. This device enables high efficiency in removing adhering substances from the electrolytic plate surface and ensures the continuous stability of the waste liquid electrolytic purification process parameters.

[0038] 2. The main chamber adopts a composite separation structure, mainly equipped with a central filter plate and an inclined plate. The solid substances precipitated from the electrolysis plate are scraped off and then collected at the lowest point of the inclined plate by the directional flow guiding effect of the inclined plate, and finally sucked away. The electrolyzed liquid flows out through the filter holes of the central filter plate and exits through the primary purified liquid outlet. This structure ensures that the solid residue and the purified liquid are spatially separated through the synergistic effect of physical sedimentation and mechanical filtration, thereby improving the solid-liquid separation efficiency and making the purification effect better.

[0039] 3. The second purification component adopts an overflow-sedimentation composite separation structure, which is equipped with an inverted cone pool and an overflow baffle. The purified liquid is discharged by overflowing upwards, while the solid substances formed after the chemical reaction sink to the inverted cone pool due to gravity. The inverted cone pool and the main pool are physically isolated by a slag-separating cone, which effectively prevents the precipitated solid substances from re-entering the main pool due to fluid disturbance. In the end, the purified liquid and solid substances can be effectively separated, ensuring that no secondary pollution is generated during the purification process. Attached Figure Description

[0040] The accompanying drawings are provided to further illustrate the invention and are used together with the embodiments of the invention to explain the invention. They do not constitute a limitation of the invention. In the drawings:

[0041] Figure 1 This is a schematic diagram of the overall structure of the processing device according to an embodiment of the present invention;

[0042] Figure 2 This is a perspective view of the processing device according to an embodiment of the present invention;

[0043] Figure 3 This is a cross-sectional view of the second purification component according to an embodiment of the present invention;

[0044] Figure 4This is a cross-sectional view of the overflow partition according to an embodiment of the present invention;

[0045] Figure 5 This is an exploded schematic diagram of the second purification component according to an embodiment of the present invention;

[0046] Figure 6 This is an exploded schematic diagram of the first purification component according to an embodiment of the present invention;

[0047] Figure 7 This is a schematic diagram of a half-section of the electrolysis tank according to an embodiment of the present invention;

[0048] Figure 8 This is a schematic diagram of the electrolytic plate scraping component structure according to an embodiment of the present invention;

[0049] Figure 9 This is a first partial schematic diagram of the electrolytic plate scraping component according to an embodiment of the present invention;

[0050] Figure 10 This is an exploded view of the electrolytic plate scraping component according to an embodiment of the present invention;

[0051] Figure 11 This is a second partial schematic diagram of the electrolytic plate scraping component according to an embodiment of the present invention;

[0052] Figure 12 This is an exploded schematic diagram of the scraper swing mechanism according to an embodiment of the present invention;

[0053] Figure 13 This is a schematic diagram of the structure of the blade sheath being locked by the locking pin according to an embodiment of the present invention;

[0054] Figure 14 This is a schematic diagram of the structure of the blade sheath disengaging from the locking pin according to an embodiment of the present invention;

[0055] Figure 15 This is a schematic diagram of the filter cleaning component structure according to an embodiment of the present invention.

[0056] In the diagram: A. First purification component; 1. Electrolysis tank; 101. Main tank; 102. Middle filter plate; 103. Inclined plate; 104. Waste residue outlet; 105. Primary purified liquid outlet; 2. Cleaning installation main board; 3. Filter cleaning components; 301. First cylinder; 302. First linear bearing; 303. Cleaning lifting base; 3031. Cleaning lifting rod; 3032. Clearance groove; 304. Brush; 305 1. Cleaning drive motor; 4. Electrolytic plate scraping component; 401. Second cylinder; 402. Angle limit power mechanism; 4021. Limit power cylinder; 4022. Limit pin; 403. Scraper swing mechanism; 4031. Scraper locking rod; 40311. Locking pin; 40312. Insert rod; 40313. Limiting transverse insertion port; 40314. Lifting head; 4032. Swing base; 40321. Pin Sliding groove; 40322, Rotating swing shaft; 4033, Blade sleeve; 40331, Shaft hole; 40332, Locking slot; 4034, Scraper; 4035, Spring; 404, Scraper lifting base; 4041, Lifting spring groove; 405, Second linear bearing; 5, Electrolysis plate; 501, Electrolysis plate body; 502, Fixed side groove; B, Second purification component; 6, Purification stirring motor; 7, Stirring shaft; 701 702. Main shaft; 703. Horizontal shaft; 704. Paddle plate; 8. Purification reaction tank; 805. Main tank body; 806. Inverted cone tank body; 807. Waste residue outlet; 808. Reaction liquid inlet; 809. Wastewater inlet; 8000. Overflow tank; 8001. Purified liquid outlet; 901. Overflow partition; 901. Overflow channel; 9012. First water channel; 9013. Second water channel; 9014. Third water channel; 10. Slag-separating cone. Detailed Implementation

[0057] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0058] like Figures 1 to 15 As shown, an electrolytic waste liquid treatment device for indium metal processing includes a first purification component A and a second purification component B. The first purification component A uses electrolysis to precipitate metal elements from the waste liquid, and the second purification component B uses chemical precipitation to perform secondary purification of the waste liquid. By adjusting the pH gradient and adding a composite precipitant, the remaining precipitable ions are converted into stable precipitates.

[0059] The first purification component A includes an electrolysis plate 5, with an electrolysis plate scraping component 4 positioned above the electrolysis plate 5. The electrolysis plate scraping component 4 is equipped with scrapers 4034, which are located on both sides of the electrolysis plate 5. During downward movement, the scrapers 4034 maintain a constant contact pressure with the surface of the electrolysis plate 5 through a mechanical locking mechanism, ensuring effective removal of electrolytically deposited solids. During upward movement, the rigid constraints on the scrapers 4034 are released, enabling them to have an adaptive avoidance function, preventing unnecessary collisions with residues on the plate surface. Therefore, this device ensures the effectiveness of the scrapers in removing solids adhering to the electrolysis plate 5 while avoiding ineffective collisions. It significantly reduces mechanical wear while maintaining the cleanliness of the electrolysis plate 5 surface, thus extending the service life of the scrapers 4034. This device enables high efficiency in removing adhering substances from the surface of the electrolysis plate 5, ensuring the continuous stability of the waste liquid electrolysis purification process parameters.

[0060] The electrolytic plate scraping component 4 includes a lifting head 40314, a scraping lifting base 404 that moves back and forth along the vertical direction of the electrolytic plate 5, and a scraper swing mechanism 403 connected to the scraper lifting base 404. The scraper swing mechanism 403 includes a swing base 4032, which is provided with a pin sliding groove 40321 and a rotating swing shaft 40322. The rotating swing shaft 40322 is connected to a blade sleeve 4033, and a scraper 4034 is inserted into the blade sleeve 4033. The blade sleeve 4033 is provided with a shaft hole 40331 and a... The locking slot 40332 and the pin sliding groove 40321 are slidably connected to the scraper locking rod 4031. The lower end of the scraper locking rod 4031 is provided with a locking pin 40311, the lower end of which is inverted triangular in shape. When the locking pin 40311 is inserted into the locking slot 40332, the relative position of the blade sleeve 4033 and the swing base 4032 is fixed, and at this time the blade edge of the scraper 4034 is in contact with the surface of the electrolytic plate 5. The locking pin 40311 is withdrawn from the locking slot 40332 until only the blade edge of the scraper 4034 is in contact with the surface of the electrolytic plate 5. When the inverted triangular shape of the locking pin 40311 is located within the locking slot 40332, the tool holder 4033 can swing around the rotating pivot 40322. The inverted triangular shape at the lower end of the locking pin 40311 ensures that when the locking pin 40311 disengages from the locking slot 40332, the inverted triangular shape remains inside the locking slot 40332. This allows the tool holder 4033 to swing within a certain range without completely disengaging the locking pin 40311 from the locking slot 40332, thus preventing... The locking pin 40311 is prevented from being misaligned when it is inserted into the locking slot 40332, thus ensuring a stable connection between the two. This allows for flexible adjustment of the relative position between the scraper 4034 and the electrolysis plate 5. Through this flexible adjustment, the scraper 4034 can effectively scrape off solid materials from the electrolysis plate 5 while avoiding impact from solid materials when returning to its original position. This ensures both the effectiveness of the scraper and its service life.

[0061] The electrolysis plate 5 is detachably installed in the electrolysis chamber 1, and a cleaning installation main board 2 is installed on the top of the electrolysis chamber 1.

[0062] Clean and install the main board 2 to connect the second cylinder 401 and the second linear bearing 405. The output end of the second cylinder 401 is connected to the scraper lifting base 404, and the scraper lifting base 404 is slidably connected to the second linear bearing 405.

[0063] The scraper locking rod 4031 is also provided with a plug rod 40312. One end of the plug rod 40312 is connected to a locking pin 40311, and the other end of the plug rod 40312 is provided with a lifting head 40314. The outer diameter of the lifting head 40314 is larger than the outer diameter of the plug rod 40312. The lower end of the lifting head 40314 is provided with a spring 4035. The scraper lifting base 404 is provided with a lifting spring groove 4041. The end of the spring 4035 away from the lifting head 40314 is connected to the inner bottom surface of the lifting spring groove 4041. The lifting head 40314 is slidably inserted into the lifting spring groove 4041.

[0064] A limiting transverse insertion port 40313 is provided on one side of the insertion rod 40312; an angle limiting power mechanism 402 is connected to the side of the scraper lifting base 404. The angle limiting power mechanism 402 includes a limiting power cylinder 4021, which is connected to a limiting pin 4022. When the scraper lifting base 404 moves downward, the limiting pin 4022 is inserted into the limiting transverse insertion port 40313, and at this time, the locking pin 40311 is inserted into the locking slot 40332.

[0065] When the scraper lifting base 404 moves to its lowest position, the limiting pin 4022 is withdrawn from the limiting transverse socket 40313. At this time, the lifting head 40314 protrudes from the upper surface of the scraper lifting base 404 due to the elastic force of the spring 4035, thereby stretching the locking pin 40311 and causing the locking pin 40311 to disengage from the locking slot 40332. Then, when the scraper lifting base 404 moves upward and returns to its highest position, the upper surface of the scraper lifting base 404 is attached to the lower surface of the cleaning and mounting main board 2. The lower surface of the cleaning and mounting main board 2 presses the lifting head 40314 back into the lifting spring groove 4041. At this time, the height of the limiting transverse socket 40313 is aligned with the limiting pin 4022. The limiting pin 4022 is inserted into the limiting transverse socket 40313 under the push of the limiting power cylinder 4021. By setting the angle limiting power mechanism 402 and the spring 4035, the scraper 4034 can change different states at different nodes, thus forming a working mechanism of dynamic locking mechanism and elastic reset device working together. By adjusting the state of the scraper 4034, the service life of the scraper is extended and the working effect of the scraper 4034 is guaranteed.

[0066] The electrolysis tank 1 includes a main tank 101. Two layers of intermediate filter plates 102 are arranged in the middle of the main tank 101. The lower end of the intermediate filter plates 102 is connected to an inclined plate 103. The end of the inclined plate 103 connected to the intermediate filter plates 102 is higher than the end connected to the inner side wall of the main tank 101. Two waste residue outlets 104 are arranged on both sides of the main tank 101. The waste residue outlets 104 are located at the bottom of the inclined plate 103. The waste residue outlets 104 are connected to a waste residue extraction pump. The lower end of the main tank 101 is inverted cone shape. A primary purification liquid outlet 105 is arranged at the inverted cone shape at the lower end of the main tank 101. The main tank 101 adopts a composite separation structure. By setting the intermediate filter plates 102 and the inclined plate 103, the solid substances precipitated from the electrolysis plate 5 are scraped off and then collected at the lowest point of the inclined plate 103 by the directional flow of the guide surface of the inclined plate 103 and finally sucked away.

[0067] The electrolysis plate 5 includes an electrolysis plate body 501. Fixed side grooves 502 are provided on both sides of the upper end of the electrolysis plate body 501. The fixed side grooves 502 are attached to the side plates of the main housing 101 and fixed with bolts. When the electrolysis plate 5 needs to be replaced, it can be removed simply by unscrewing the bolts, making replacement very convenient. The electrolysis plate 5 is positioned on both sides of the two-layer middle filter plate 102, so the solid matter precipitated from the electrolysis plate 5 will not fall into the middle of the two-layer middle filter plate 102. The middle filter plate 102 also prevents solid matter from flowing into the middle of the two-layer middle filter plate 102 due to water flow. The electrolytic liquid passes through the filter holes of the middle filter plate 102 into the middle of the two-layer middle filter plate 102, and is finally discharged through the primary purified liquid outlet 105. This structure, through the synergistic effect of physical sedimentation and mechanical filtration, ensures that solid residues and purified liquid phases form spatial separation, improving solid-liquid separation efficiency and resulting in better purification.

[0068] The cleaning mounting main board 2 is also connected to a filter cleaning component 3, which includes a first cylinder 301 and a first linear bearing 302. The first cylinder 301 is connected to a cleaning lifting base 303. The cleaning lifting base 303 is provided with a cleaning lifting rod 3031, which is slidably connected to the first linear bearing 302. The cleaning lifting base 303 is also provided with a recess 3032. When the cleaning lifting base 303 is raised or lowered, the two middle filter plates 102 are movably inserted into the recess 3032. Therefore, the cleaning lifting base 303 and the middle filter plates 102 form a dynamic fitting structure, ensuring that the middle filter plates 102 and the filter cleaning component 3 do not interfere with each other during the cleaning stroke.

[0069] The cleaning lifting base 303 is connected to the cleaning drive motor 305 and the brush 304. The cleaning drive motor 305 is connected to the motor pulley, and the brush 304 is connected to the rotating pulley. The motor pulley and the rotating pulley are connected by a belt. The cleaning drive motor 305 drives the motor pulley to rotate, which in turn drives the brush 304 to rotate. The filter cleaning component 3 can periodically clean the middle filter plate 102, so that the filter holes of the middle filter plate 102 will not be blocked. In this embodiment, the brushes 304 are arranged in three rows. The middle brush 304 is used to clean the opposite sides of the two middle filter plates 102, and the two rows of brushes 304 on both sides are used to clean the opposite sides of the two middle filter plates 102. The back side achieves full coverage maintenance of the bidirectional surface of the central filter plate 102, ensuring that both sides of the central filter plate 102 can be effectively cleaned. The brush 304 rotates synchronously during its up-and-down movement, creating a composite motion mode of lifting and rotating motion for the filter cleaning component 3. This design allows the brush 304 to maintain high-speed rotation during its vertical reciprocating stroke. Through the superposition of dual motions, the pore unblocking efficiency is significantly improved, ensuring stable output of cleaning power while effectively preventing wear of the moving parts by solid deposits. This innovative structure, through the synergistic effect of mechanical linkage and physical isolation, ensures the cleaning efficiency of the filter plate while minimizing the frequency of equipment maintenance.

[0070] The second purification component B includes a purification reaction tank 8, with an overflow baffle 9 near the upper end and a stirring shaft 7 inside. The second purification component B adopts an overflow-sedimentation composite separation structure, with an inverted cone tank 802 and an overflow baffle 9. The purified liquid is discharged by overflowing upwards, while the solid substances formed after the chemical reaction sink to the inverted cone tank 802 due to gravity. The inverted cone tank 802 and the main tank 801 are physically isolated by a slag-separating cone 10, effectively preventing the precipitated solid substances from re-entering the main tank 801 due to fluid disturbance. Ultimately, the purified liquid and solid substances can be effectively separated, ensuring that no secondary pollution is generated during the purification process.

[0071] The purification reaction tank 8 includes a main tank body 801, with an inverted cone tank body 802 connected to the lower end of the main tank body 801. A slag-separating cone 10 is provided between the main tank body 801 and the inverted cone tank body 802. A reaction liquid inlet 804 and a wastewater inlet 805 are provided on both sides of the main tank body 801. The reaction chemicals are input from the reaction liquid inlet 804, and the secondary wastewater purified by the first purification component A is input from the wastewater inlet 805. The two are mixed in the main tank body 801 by stirring by the stirring shaft 7.

[0072] The stirring shaft 7 is connected to the purification stirring motor 6. The stirring shaft 7 includes a main shaft body 701, and several horizontal shafts 702 are vertically connected to the main shaft body 701. The midpoint of the horizontal shafts 702 is connected to the main shaft body 701. When viewed from the radial projection plane of the main shaft body 701, different horizontal shafts 702 form an angle. Paddles 703 are also provided at both ends of the horizontal shafts 702. Therefore, when the stirring shaft 7 rotates, multiple points inside the main tank body 801 can be moved by the paddles 703, thereby forming multi-directional fluid shear during the rotation process, ensuring that the reaction medium achieves all-round mixing in three-dimensional space.

[0073] The overflow partition 9 is provided with an overflow channel 901, which includes a first channel 9011, a second channel 9012, and a third channel 9013 that are in communication. The first channel 9011 and the second channel 9012 form an angle, and the second channel 9012 and the third channel 9013 form an angle. Therefore, even if solid matter enters the first channel 9011 under the influence of water flow, it is difficult to pass through the angle between the first channel 9011 and the second channel 9012. Through the setting of the double angle, the solid matter is ultimately unable to pass through the overflow partition 9.

[0074] An overflow trough 806 is also provided at the upper end of the main tank 801, which is connected to the purified liquid outlet 807. The purified liquid overflows from the bottom end of the overflow channel 901 to the upper end of the overflow channel 901, then overflows to the overflow trough 806, and finally flows out through the purified liquid outlet 807. A waste slag outlet 803 is provided on the bottom side of the inverted cone tank 802. The waste slag outlet 803 is cleaned and discharged at regular intervals by a high-pressure slag discharge pump. Solid matter falls from the conical surface of the slag-separating cone 10 due to gravity, then falls into the inverted cone tank 802 through the side holes of the slag-separating cone 10, and is finally discharged through the waste slag outlet 803. This structure, through fluid dynamics optimization, achieves a high solid phase retention rate while ensuring treatment efficiency, and the system operation stability is improved compared with the traditional structure.

[0075] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the 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. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for treating electrolytic waste liquid used in indium metal processing, characterized in that, It includes a first purification component (A) and a second purification component (B). The first purification component (A) uses electrolysis to precipitate metal elements in the waste liquid, and the second purification component (B) uses chemical precipitation to perform secondary purification of the waste liquid. The first purification component (A) includes an electrolytic plate (5), an electrolytic plate scraping component (4) is provided above the electrolytic plate (5), and a scraper (4034) is provided on the electrolytic plate scraping component (4). The scraper (4034) is located on both sides of the electrolytic plate (5). When the scraper (4034) moves downward, it maintains a constant contact pressure with the surface of the electrolytic plate (5) through a mechanical locking mechanism to ensure effective stripping of the solid material deposited by electrolysis. When the scraper (4034) moves upward, it releases the rigid constraint, so that the scraper (4034) has an adaptive avoidance function to avoid unnecessary collisions with the residue on the plate surface. The electrolytic plate scraping component (4) includes a lifting head (40314), a scraping lifting base (404) that moves back and forth along the vertical direction of the electrolytic plate (5), and the scraping lifting base (404) is connected to the scraper swing mechanism (403). The scraper swing mechanism (403) includes a swing base (4032), the swing base (4032) is provided with a pin sliding groove (40321) and a rotating swing shaft (40322), the rotating swing shaft (40322) is connected to a blade sleeve (4033), the scraper (4034) is inserted into the blade sleeve (4033), the blade sleeve (4033) is provided with a shaft hole (40331) and a locking slot (40332), the pin sliding groove (40321) is slidably inserted with a scraper locking rod (4031), the lower end of the scraper locking rod (4031) is provided with a locking pin (40311), the lower end of the locking pin (40311) is inverted triangular in shape; When the locking pin (40311) is inserted into the locking slot (40332), the relative position of the blade sleeve (4033) and the swing base (4032) is fixed, and at this time the blade of the scraper (4034) is in contact with the surface of the electrolytic plate (5). When the locking pin (40311) is withdrawn from the locking slot (40332) until only the inverted triangular shape of the locking pin (40311) is in the locking slot (40332), the blade sheath (4033) can swing around the rotating pivot (40322).

2. The electrolytic waste liquid treatment device for indium metal processing according to claim 1, characterized in that, The electrolysis plate (5) is detachably installed in the electrolysis box (1), and a cleaning installation main board (2) is provided on the top of the electrolysis box (1). The scraper locking rod (4031) is also provided with a plug rod (40312), one end of which is connected to a locking pin (40311), and the other end of which is provided with a lifting head (40314). The outer diameter of the lifting head (40314) is larger than the outer diameter of the plug rod (40312), and the lower end of the lifting head (40314) is provided with a spring (4035). The scraper lifting base (404) is provided with a lifting spring groove (4041). The end of the spring (4035) away from the lifting head (40314) is connected to the inner bottom surface of the lifting spring groove (4041). The lifting head (40314) is slidably inserted into the lifting spring groove (4041).

3. The electrolytic waste liquid treatment device for indium metal processing according to claim 2, characterized in that, One side of the insertion rod (40312) is provided with a limiting transverse insertion port (40313). The scraper lifting base (404) is connected to an angle limiting power mechanism (402) on the side. The angle limiting power mechanism (402) includes a limiting power cylinder (4021) and the limiting power cylinder (4021) is connected to a limiting pin (4022). When the scraper lifting base (404) moves downward, the limit pin (4022) is inserted into the limit transverse socket (40313), and at this time the locking pin (40311) is inserted into the locking slot (40332); When the scraper lifting base (404) moves to its lowest position, the limit pin (4022) is withdrawn from the limit transverse socket (40313). At this time, the lifting head (40314) protrudes from the upper end face of the scraper lifting base (404) due to the elastic force of the spring (4035), thereby stretching the locking pin (40311) and causing the locking pin (40311) to disengage from the locking slot (40332). Then, when the scraper lifting base (404) moves back upward, the scraper lifting base... When the base (404) moves back to the top, the upper surface of the scraper lifting base (404) is attached to the lower surface of the cleaning mounting main board (2). The lower surface of the cleaning mounting main board (2) presses the lifting head (40314) back into the lifting spring groove (4041). At this time, the height of the limiting transverse socket (40313) is aligned with the limiting pin (4022). The limiting pin (4022) is inserted into the limiting transverse socket (40313) under the push of the limiting power cylinder (4021).

4. The electrolytic waste liquid treatment device for indium metal processing according to claim 3, characterized in that, The cleaning installation main board (2) is connected to the second cylinder (401) and the second linear bearing (405). The output end of the second cylinder (401) is connected to the scraper lifting base (404), and the scraper lifting base (404) is slidably connected to the second linear bearing (405).

5. The electrolytic waste liquid treatment device for indium metal processing according to claim 4, characterized in that, The electrolysis tank (1) includes a main tank (101), and two layers of middle filter plates (102) are provided in the middle of the main tank (101). The lower end of the middle filter plate (102) is connected to an inclined plate (103). The end of the inclined plate (103) connected to the middle filter plate (102) is higher than the end connected to the inner wall of the main tank (101). Two waste residue outlets (104) are provided on both sides of the main tank (101). The waste residue outlets (104) are located at the bottom of the inclined plate (103). The waste residue outlets (104) are connected to a waste residue extraction pump. The lower end of the main box (101) is inverted cone shape, and a primary purification liquid outlet (105) is provided at the inverted cone shape at the lower end of the main box (101). The electrolysis plate (5) includes an electrolysis plate body (501), and fixed side grooves (502) are provided on both sides of the upper end of the electrolysis plate body (501). The fixed side grooves (502) are attached to the side plate of the main box (101). The electrolysis plate (5) is located on both sides of the two-layer middle filter plate (102). The electrolyzed liquid passes through the filter holes of the middle filter plate (102) and comes to the middle of the two-layer middle filter plate (102), and is finally discharged through the primary purification liquid outlet (105).

6. The electrolytic waste liquid treatment device for indium metal processing according to claim 5, characterized in that, The cleaning mounting main board (2) is also connected to a filter cleaning component (3), which includes a first cylinder (301) and a first linear bearing (302). The first cylinder (301) is connected to a cleaning lifting base (303). The cleaning lifting base (303) is provided with a cleaning lifting rod (3031), which is slidably connected to the first linear bearing (302); The cleaning lifting base (303) is also provided with a groove (3032). When the cleaning lifting base (303) is raised or lowered, the two middle filter plates (102) are movably inserted into the groove (3032). The cleaning lifting base (303) is connected to the cleaning drive motor (305) and the brush (304). The cleaning drive motor (305) is connected to the motor pulley, and the brush (304) is connected to the rotating pulley. The motor pulley and the rotating pulley are connected by a belt. The cleaning drive motor (305) drives the motor pulley to rotate, which in turn drives the brush (304) to rotate.

7. The electrolytic waste liquid treatment device for indium metal processing according to any one of claims 1 to 6, characterized in that, The second purification component (B) includes a purification reaction tank (8), an overflow baffle (9) is provided near the upper end of the purification reaction tank (8), and a stirring shaft (7) is provided inside the purification reaction tank (8). The purification reaction tank (8) includes a main tank body (801), the lower end of the main tank body (801) is connected to an inverted cone tank body (802), a slag-separating cone (10) is provided between the main tank body (801) and the inverted cone tank body (802), and a reaction liquid inlet (804) and a wastewater inlet (805) are provided on both sides of the main tank body (801). Waste outlet (803) is provided on the bottom side of the inverted cone pool (802).

8. The electrolytic waste liquid treatment device for indium metal processing according to claim 7, characterized in that, The stirring shaft (7) is connected to the purification stirring motor (6). The stirring shaft (7) includes a main shaft body (701). The main shaft body (701) is vertically connected to several horizontal shafts (702). The midpoint of the horizontal shafts (702) is connected to the main shaft body (701). When viewed from the radial projection plane of the main shaft body (701), different horizontal shafts (702) form an angle between them. The horizontal axis (702) is also provided with paddles (703) at both ends.

9. The electrolytic waste liquid treatment device for indium metal processing according to claim 8, characterized in that, The overflow partition (9) is provided with an overflow channel (901), which includes a first channel (9011), a second channel (9012) and a third channel (9013) that are in communication. An overflow tank (806) is also provided at the upper end of the main tank (801), and the overflow tank (806) is connected to the purified liquid outlet (807). The purified liquid overflows from the bottom of the overflow channel (901) to the top of the overflow channel (901), then overflows into the overflow tank (806), and finally flows out through the purified liquid outlet (807).

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