Electrolytic waste liquid treatment device for metal indium processing

Abstract

The invention provides an electrolytic waste liquid treatment device for metal indium processing, and relates to the technical field of electrolytic waste liquid treatment devices, the electrolytic waste liquid treatment device comprises a first purification assembly and a second purification assembly, the first purification assembly separates out metal elements in waste liquid in an electrolysis mode, and the second purification assembly carries out secondary purification on the waste liquid through a chemical precipitation method; the first purification assembly comprises an electrolytic plate, an electrolytic plate scraping part is arranged above the electrolytic plate, and the electrolytic plate scraping part is provided with a scraper. The device has the beneficial effects that when the scraper moves downwards, the constant contact pressure between the scraper and the plate surface of the electrolytic plate is kept through the mechanical locking mechanism, and it is ensured that electrolytically deposited solid substances are effectively stripped; and when the scraper moves upwards, rigid constraint is relieved in the ascending process, so that the scraper has a self-adaptive avoiding function, and unnecessary collision with residues on the plate surface is avoided. Therefore, the effect that the scrapers scrape off solids adhered to the electrolytic plate can be guaranteed, and invalid collision of the scrapers can be avoided.

Description

Technical Field

[0001] The present 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 Art

[0002] The electrolytic wastewater generated during the production of indium metal mainly contains high-concentration heavy metal ions, including harmful elements such as cadmium (Cd), thallium (Tl), copper (Cu), lead (Pb), zinc (Zn), arsenic (As), etc. Among them, cadmium and thallium need to be treated with emphasis due to their strong toxicity and easy bioaccumulation. For the treatment of such wastewater, multiple processes such as electrolytic purification, chemical precipitation, physical separation, and electrochemical technology are usually used in cooperation or alone to achieve the recycling of water resources, reduce industrial pollution, and minimize the damage to the natural environment caused by industrial production. Among them, the electrolytic process usually inputs the pretreated wastewater into the electrolysis system. With a multi-stage electrolytic cell design, by controlling the current density and the flow rate of the electrolyte, metal ions in the wastewater are precipitated. After these metal elements are precipitated, they are likely to accumulate near the electrolytic plate, thus reducing the speed and effectiveness of the electrolytic plate for electrolyzing other wastewater.

[0003] The technical content disclosed in the Chinese patent document (Publication No.: CN215713434U, Patent Name: An Electrolysis Device for the Electrolytic Purification Process of Copper Electrolyte) is as follows: It includes an electrolytic cell. A clamping groove is opened at the top of the electrolytic cell. A top frame is movably installed inside the clamping groove. An air extractor is arranged at the top of the top frame. A purifier is arranged on the outer wall of the air outlet pipe of the air extractor. Four limiting blocks are symmetrically installed on the inner wall of the electrolytic cell. A cover plate is movably installed inside the electrolytic cell. An air outlet hole is opened at the top of the cover plate. Electrode plates are fixedly installed inside the electrolytic cell. A scraping frame slides back and forth on the outer wall of the electrode plates. Two scraping plates on the outer wall of the fixing frame can scrape off the substances on the surface of the electrode plates. The guiding plate is in contact with the outer wall of the electrode plates. When the scraping plates scrape off the substances on the surface of the electrode plates, the substances will fall on the guiding plate and slide along the surface of the guiding plate into the inner part of the outer frame for collection, thus facilitating the collection of the sundries scraped off from the surface of the electrode plates by the scraping plates to prevent the sundries from accumulating inside the electrolytic cell.

[0004] As can be seen from the above implementation and the corresponding drawings, this electrolysis device is provided with a scraping frame that can scrape off the metal attached to the electrode plates, enabling the electrode plates to electrolyze better. However, this scraping frame can only be manually pushed, and there is no mechanism to tightly press the scraping frame against the electrode plates. Therefore, the scraping effect may be affected, resulting in residual attachments on the electrode plates and preventing the electrode plates from being utilized optimally. Summary of the Invention

[0005] The present invention overcomes the disadvantages in the prior art and provides an electrolytic waste liquid treatment device for processing indium metal. A scraper is provided that can move along the height direction of the electrolytic plate. When the scraper moves downward, a mechanical locking mechanism is used to maintain a constant contact pressure with the surface of the electrolytic plate, ensuring effective peeling of the electrolytically deposited solid substances. When the scraper moves upward, the rigid constraint is released during the upward movement, enabling the scraper to have an adaptive avoidance function and avoiding unnecessary collisions with the residues on the plate surface. Therefore, it can not only ensure the effect of the scraper scraping off the solids adhered to the electrolytic plate, but also avoid ineffective collisions of the scraper, significantly reducing mechanical wear while ensuring the cleanliness of the electrolytic plate surface, improving the service life of the scraper. This device can efficiently remove the adhesions on the surface of the electrolytic plate and ensure the continuous stability of the waste liquid electrolytic purification process parameters.

[0006] To solve the above technical problems, the present invention is realized through the following technical solutions: An electrolytic waste liquid treatment device for processing indium metal 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 perform secondary purification on the waste liquid. The first purification component includes an electrolytic plate. Above the electrolytic plate, there is an electrolytic plate scraping component. The electrolytic plate scraping component is provided with a scraper. The scraper is arranged on both sides of the electrolytic plate. When the scraper moves downward, a mechanical locking mechanism is used to maintain a constant contact pressure with the surface of the electrolytic plate, ensuring effective peeling of the electrolytically deposited solid substances. During the upward movement of the scraper, the rigid constraint is released, enabling the scraper to have an adaptive avoidance function and avoiding unnecessary collisions with the residues on the plate surface.

[0007] Furthermore, the electrolytic plate scraping component includes a lifting head. The scraping lifting base moves back and forth along the vertical direction of the electrolytic plate, and the scraping lifting base is connected to the scraper swing mechanism. 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 knife sleeve. The scraper is inserted into the knife sleeve. The knife sleeve is provided with a shaft hole and a locking slot. A scraper locking rod is slidably inserted into the pin sliding groove. The lower end of the scraper locking rod is provided with a locking pin, and the lower end of the locking pin is in an inverted triangular shape. When the locking pin is inserted into the locking slot, the relative position of the knife sleeve and the swing base is fixed. At this time, the blade of the scraper fits the surface of the electrolytic plate. When the locking pin is withdrawn from the locking slot until only the inverted triangular shape of the locking pin is located in the locking slot, the knife sleeve can swing around the rotating swing shaft.

[0008] Furthermore, the electrolytic plate is detachably arranged in the electrolytic box body, and a cleaning installation main board is arranged above the electrolytic box body. The scraper lock rod is also provided with an insertion rod, one end of the insertion rod is connected to the locking pin, and the other end of the insertion rod is provided with a lifting head, the outer diameter of the lifting head is larger than the outer diameter of the insertion rod, and the lower end of the lifting head is provided with a spring; The scraper lifting base is provided with a lifting spring groove, one 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.

[0009] Furthermore, a limited transverse socket is provided on one side of the insertion rod; The side of the scraper lifting base is connected to an angle limiting power mechanism, which includes a limiting power cylinder connected to a limiting pin; When the scraper lifting base moves downward, the limit pin is inserted into the limit horizontal socket, and the locking pin is inserted into the locking slot; When the scraper lifting base moves to the lowest point, the limit pin is pulled out of the limit horizontal socket. At this time, the lifting head protrudes from the upper end surface of the scraper lifting base due to the elastic force of the spring, thereby stretching the locking pin, causing the locking pin to disengage from the locking slot. Then, when the scraper lifting base moves back upward and moves back to the highest point, the upper end surface of the scraper lifting base fits into the lower end surface of the cleaning installation mainboard, and the lower end surface of the cleaning installation mainboard 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.

[0010] Furthermore, the cleaning installation mainboard 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.

[0011] Furthermore, the electrolysis box includes a main box, and two layers of middle filter plates are provided in the middle of the main box. The lower end of the middle filter plate is connected to the inclined plate, and the end of the inclined plate connected to the middle filter plate is higher than the end connected to the inner wall of the main box. Two waste residue outlets are provided on both sides of the main box, and the waste residue outlets are located at the bottom end of the inclined plate. The waste residue outlets are externally connected to a waste residue extraction pump; The lower end of the main box body is in an inverted cone shape, and a primary purification liquid outlet is provided at the inverted cone shape at the lower end of the main box body; The electrolytic plate includes an electrolytic plate body, and fixed side grooves are provided on both sides of the upper end of the electrolytic plate body. The fixed side grooves are hung on the side plates of the main box body. The electrolytic plate is provided on both sides of the two-layer middle filter plate. The electrolytic liquid passes through the filter holes of the middle filter plate and comes to the middle of the two-layer middle filter plate, and is finally discharged through the primary purified liquid outlet.

[0012] Furthermore, the cleaning installation mainboard is further connected to a filter cleaning component, the filter cleaning component includes a first cylinder and a first linear bearing, and the first cylinder is connected to the cleaning lifting base; The cleaning lifting base is provided with a cleaning lifting rod, and the cleaning lifting rod is slidably connected with a first linear bearing; The cleaning lifting base is further provided with an avoidance groove. When the cleaning lifting base moves up and down, the two middle filter plates are movably inserted into the avoidance groove; The cleaning lifting base is connected with a cleaning drive motor and a brush. The cleaning drive motor is connected with a motor pulley, the brush is connected with a rotating pulley, the motor pulley and the rotating pulley are connected by a belt, and the cleaning drive motor drives the motor pulley to rotate, and finally drives the brush to rotate.

[0013] Furthermore, the second purification component includes a purification reaction tank. An overflow partition is arranged near the upper end of the purification reaction tank, and a stirring shaft is arranged inside the purification reaction tank; The purification reaction tank includes a main tank body. The lower end of the main tank body is connected with an inverted conical tank body. A slag separation frustum is arranged between the main tank body and the inverted conical tank body. A reaction liquid inlet and a waste water inlet are arranged on both sides of the main tank body; A waste residue outlet is arranged at the bottom side of the inverted conical tank body.

[0014] Furthermore, the stirring shaft is connected with a purification stirring motor. The stirring shaft includes a main shaft body. A plurality of transverse shafts are vertically connected to the main shaft body. The midpoints of the transverse shafts are connected with the main shaft body. When viewed from the radial projection plane of the main shaft body, an included angle is formed between different transverse shafts; Paddle plates are further arranged at both ends of the transverse shaft.

[0015] Furthermore, an overflow water channel is arranged in the overflow partition. The overflow water channel includes a first water channel, a second water channel and a third water channel which are communicated with each other; An overflow water tank is further arranged at the upper end of the main tank body. The overflow water tank is connected with a purified liquid outlet; The liquid after being purified overflows from the bottom end of the overflow water channel to the upper end of the overflow water channel, then overflows to the overflow water tank, and finally flows out through the purified liquid outlet.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. A device for treating electrolytic waste liquid used in metal indium processing is provided. The device includes a scraper that can move along the height of the electrolytic plate. During its downward movement, the scraper maintains constant contact pressure with the plate surface through a mechanical locking mechanism, ensuring effective removal of electrolytically deposited solid matter. During its upward movement, the scraper releases its rigid constraints, enabling it to adaptively avoid unnecessary collisions with residues on the plate surface. This ensures that the scraper effectively removes solid matter adhering to the plate while preventing ineffective collisions. This ensures the cleanliness of the plate surface while significantly reducing mechanical wear and extending the scraper's service life. The device efficiently removes adhering matter from the plate surface and ensures the continued stability of the waste liquid electrolytic purification process parameters.

[0017] 2. The main box adopts a composite separation structure, which is mainly equipped with a middle filter plate and an inclined plate. The solid matter precipitated from the electrolysis plate is scraped off and gathered to the lowest point of the inclined plate through the directional drainage effect of the guide surface of the inclined plate and finally sucked away. The electrolyzed liquid passes through the filter holes of the middle filter plate and flows out through the primary purified liquid outlet. This structure ensures the spatial separation of solid phase residues and purified liquid phase through the synergistic effect of physical sedimentation and mechanical filtration, thereby improving the solid-liquid separation efficiency and making the purification effect better.

[0018] 3. The second purification component adopts an overflow-sedimentation composite separation structure, with an inverted cone pool body and an overflow partition. The purified liquid is discharged by overflowing upward, while the solid matter formed after the chemical reaction sinks to the inverted cone pool body due to gravity. The inverted cone pool body and the main pool body are physically isolated by the slag cone, which effectively prevents the precipitated solid phase matter from re-entering the main pool body due to fluid disturbance. Finally, the purified liquid and solid matter can be effectively separated to ensure that the purification process does not cause secondary pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and are used to explain the present invention together with the embodiments of the present invention, but do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 1 is a schematic diagram of the overall structure of a processing device according to an embodiment of the present invention; Figure 2 is a perspective view of a processing device according to an embodiment of the present invention; Figure 3 is a cross-sectional view of a second purification assembly according to an embodiment of the present invention; Figure 4 is a cross-sectional view of an overflow partition according to an embodiment of the present invention; Figure 5 is an exploded schematic diagram of a second purification component according to an embodiment of the present invention; Figure 6 is an exploded schematic diagram of a first purification component according to an embodiment of the present invention; Figure 7 It is a schematic semi-sectional structure diagram of the electrolysis cell body according to an embodiment of the present invention; Figure 8 It is a schematic structure diagram of the scraping component of the electrolysis plate according to an embodiment of the present invention; Figure 9 It is a first partial schematic diagram of the scraping component of the electrolysis plate according to an embodiment of the present invention; Figure 10 It is an exploded schematic diagram of the scraping component of the electrolysis plate according to an embodiment of the present invention; Figure 11 It is a second partial schematic diagram of the scraping component of the electrolysis plate according to an embodiment of the present invention; Figure 12 It is an exploded schematic diagram of the blade swing mechanism according to an embodiment of the present invention; Figure 13 It is a schematic structure diagram of the knife sleeve locked by the locking pin according to an embodiment of the present invention; Figure 14 It is a schematic structure diagram of the separation of the knife sleeve and the locking pin according to an embodiment of the present invention; Figure 15 It is a schematic structure diagram of the filtering and cleaning component according to an embodiment of the present invention.

[0020] In the figure: A, the first purification component; 1, the electrolysis box body; 101, the main box body; 102, the middle filter plate; 103, the inclined plate; 104, the waste residue outlet; 105, the primary purified liquid outlet; 2, the cleaning and installation main board; 3, the filter cleaning component; 301, the first cylinder; 302, the first linear bearing; 303, the cleaning lifting base; 3031, the cleaning lifting rod; 3032, the avoidance groove; 304, the brush; 305, the cleaning drive motor; 4, the electrolytic plate scraping component; 401, the second cylinder; 402, the angle limit power mechanism; 4021, the limit power cylinder; 4022, the limit pin; 403, the scraper swing mechanism; 4031, the scraper lock rod; 40311, the locking pin; 40312, the insertion rod; 40313, the limit horizontal socket; 40314, the lifting head; 4032, the swing base; 40321, the pin sliding groove; 40322, the rotating swing shaft; 4033, the knife sleeve; 40331, the shaft hole; 40332, the locking slot; 4034, the scraper; 4035, the spring; 404, the scraping and lifting base; 4041, the lifting spring groove; 405, the second linear bearing; 5, the electrolytic plate; 501, the electrolytic plate body; 502, the fixed edge groove; B, the second purification component; 6, the purification stirring motor; 7, the stirring shaft; 701, the main shaft body; 702, the cross shaft; 703, the paddle board; 8, the purification reaction pool; 801, the main pool body; 802, the inverted cone pool body; 803, the waste residue outlet; 804, the reaction liquid inlet; 805, the waste water inlet; 806, the overflow water tank; 807, the purified liquid outlet; 9, the overflow partition; 901, the overflow water channel; 9011, the first water channel; 9012, the second water channel; 9013, the third water channel; 10, the slag separation frustum. Detailed implementation manners

[0021] 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 only for the purpose of illustrating and explaining the present invention, and are not intended to limit the present invention.

[0022] As Figures 1 to 15 shown, a device for treating electrolytic waste liquid in indium processing 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; by regulating the pH gradient and adding a composite precipitant, the remaining precipitable ions are made to form stable precipitates.

[0023] The first purification component A includes an electrolytic plate 5. Above the electrolytic plate 5, there is an electrolytic plate scraping component 4. The electrolytic plate scraping component 4 is provided with a scraper 4034. The scraper 4034 is arranged on both sides of the electrolytic plate 5. When the scraper 4034 moves downward, it maintains a constant contact pressure with the plate surface of the electrolytic plate 5 through a mechanical locking mechanism to ensure effective peeling of the electrolytically deposited solid substances. During the upward movement of the scraper 4034, the rigid constraint is released, enabling the scraper 4034 to have an adaptive avoidance function to avoid unnecessary collisions with the residues on the plate surface. Therefore, it can not only ensure the effect of scraping the solid substances adhered to the electrolytic plate 5 by the scraper, but also avoid ineffective collisions of the scraper 4034. While ensuring the surface cleanliness of the electrolytic plate 5, it significantly reduces mechanical wear and improves the service life of the scraper 4034. This device can efficiently remove the adhesions on the surface of the electrolytic plate 5 and ensure the continuous stability of the waste liquid electrolytic purification process parameters.

[0024] The electrolytic plate scraping component 4 includes a lifting head 40314. The scraping lifting base 404 moves back and forth along the vertical direction of the electrolytic plate 5. The scraping lifting base 404 is connected to a 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 tool holder 4033. The scraper 4034 is inserted into the tool holder 4033. The tool holder 4033 is provided with a shaft hole 40331 and a locking slot 40332. A scraper locking rod 4031 is slidably inserted into the pin sliding groove 40321. 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 in an inverted triangular shape. When the locking pin 40311 is inserted into the locking slot 40332, the relative position between the tool holder 4033 and the swing base 4032 is fixed. At this time, the cutting edge of the scraper 4034 is in contact with the plate 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 located in the locking slot 40332, the tool holder 4033 can swing around the rotating swing shaft 40322. The inverted triangular shape at the lower end of the locking pin 40311 enables the inverted triangular shape to be retained inside the locking slot 40332 when the locking pin 40311 is disengaged from the locking slot 40332. In this way, the tool holder 4033 can swing within a certain range without completely disengaging the locking pin 40311 from the locking slot 40332, avoiding the inability to insert due to misalignment when the locking pin 40311 is to be inserted into the locking slot 40332 next time. Therefore, it can ensure their stable connection, enabling the relative position between the scraper 4034 and the electrolytic plate 5 to be flexibly adjusted. Through the flexible adjustment of the relative position between the scraper 4034 and the electrolytic plate 5, the scraper 4034 can not only effectively scrape the solid substances on the electrolytic plate 5 but also avoid the impact of the solid substances when returning to its position. Therefore, while ensuring the use effect, it also ensures the service life of the scraper 4034.

[0025] The electrolytic plate 5 is detachably arranged in the electrolytic cell body 1, and a cleaning and installation main board 2 is arranged above the electrolytic cell body 1; The cleaning and installation main board 2 is connected to a second air cylinder 401 and a second linear bearing 405. The output end of the second air cylinder 401 is connected to a scraping and lifting base 404, and the scraping and lifting base 404 is slidably connected to the second linear bearing 405.

[0026] The scraping knife lock rod 4031 is further 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 that of the plug rod 40312, and a spring 4035 is arranged at the lower end of the lifting head 40314; the scraping and lifting base 404 is provided with a lifting spring groove 4041. One end of the spring 4035 away from the lifting head 40314 is connected to the inner bottom surface of the lifting spring groove 4041, and the lifting head 40314 is slidably inserted into the lifting spring groove 4041.

[0027] A limiting transverse socket 40313 is arranged on one side of the plug rod 40312; a side of the scraping and lifting base 404 is connected to an angle limiting power mechanism 402. The angle limiting power mechanism 402 includes a limiting power air cylinder 4021, and the limiting power air cylinder 4021 is connected to a limiting pin 4022; when the scraping and lifting base 404 moves downward, the limiting pin 4022 is inserted into the limiting transverse socket 40313, and at this time the locking pin 40311 is inserted into the locking slot 40332; When the scraping and lifting base 404 moves to the 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 end surface of the scraping and 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 scraping and lifting base 404 moves upward and returns to the uppermost position, the upper end surface of the scraping and lifting base 404 fits against the lower end surface of the cleaning and installation main board 2, and the lower end surface of the cleaning and installation 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, and the limiting pin 4022 is inserted into the limiting transverse socket 40313 under the push of the limiting power air cylinder 4021. Through the setting of the angle limiting power mechanism 402 and the spring 4035, the scraping knife 4034 can change different states at different nodes, thereby forming a working mechanism in which the dynamic locking mechanism and the elastic reset device cooperate, and the service life of the scraping knife is extended and the working effect of the scraping knife 4034 is guaranteed by adjusting the state of the scraping knife 4034.

[0028] The electrolysis box body 1 includes a main box body 101. Two layers of middle filter plates 102 are arranged in the middle of the main box body 101. The lower end of the middle filter plate 102 is connected to an inclined plate 103. One end of the inclined plate 103 connected to the middle filter plate 102 is higher than the end connected to the inner side wall of the main box body 101. Two waste residue outlets 104 are arranged on both sides of the main box body 101. The waste residue outlet 104 is located at the lowest end of the inclined plate 103, and the waste residue outlet 104 is externally connected to a waste residue extraction pump; the lower end of the main box body 101 is in an inverted cone shape, and a primary purified liquid outlet 105 is arranged at the inverted cone shape of the lower end of the main box body 101; the main box body 101 adopts a composite separation structure. By arranging the middle filter plate 102 and the inclined plate 103, the solid substances precipitated from the electrolysis plate 5 are scraped off and then gathered to the lowest part of the inclined plate 103 through the directional drainage effect of the guiding surface of the inclined plate 103 and finally sucked away.

[0029] The electrolysis plate 5 includes an electrolysis plate main body 501. Fixed edge grooves 502 are arranged on both sides of the upper end of the electrolysis plate main body 501. After the fixed edge grooves 502 are hung on the side plates of the main box body 101, they are fixed by bolts. When the electrolysis plate 5 needs to be replaced, only the bolts need to be removed to remove the electrolysis plate 5. Therefore, the replacement is very convenient. The electrolysis plate 5 is arranged on both sides of the two layers of middle filter plates 102. Therefore, the solid substances precipitated from the electrolysis plate 5 will not fall between the two layers of middle filter plates 102. The setting of the middle filter plate 102 also prevents the solid substances from coming between the two layers of middle filter plates 102 due to the flow of water. The electrolytic liquid passes through the filter holes of the middle filter plate 102 to the middle of the two layers of middle filter plates 102 and finally is discharged through the primary purified liquid outlet 105. This structure ensures the spatial separation of the solid-phase residue and the purified liquid phase through the synergistic effect of physical sedimentation and mechanical filtration, improves the solid-liquid separation efficiency, and makes the purification effect better.

[0030] The cleaning and installation main board 2 is also connected with a filtering and cleaning component 3. The filtering and cleaning component 3 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, and the cleaning lifting rod 3031 is slidably connected with the first linear bearing 302; the cleaning lifting base 303 is also provided with an avoidance groove 3032. When the cleaning lifting base 303 moves up and down, the two layers of middle filter plates 102 are movably inserted into the avoidance groove 3032; thus, a dynamic fitting structure is formed between the cleaning lifting base 303 and the middle filter plate 102, ensuring that the middle filter plate 102 and the filtering and cleaning component 3 do not interfere with each other during the cleaning process.

[0031] 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, 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, and finally drives the brush 304 to rotate, and the filter cleaning component 3 can regularly clean the middle filter plate 102 so that the filter holes of the middle filter plate 102 will not be blocked. In this embodiment, brushes 304 arranged in three rows are provided. 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 two middle filter plates 102. The back side realizes full coverage maintenance of the two-way surface of the middle filter plate 102, so that both sides of the middle filter plate 102 can be effectively cleaned, and the brush 304 rotates synchronously during the up and down movement, so that the filter cleaning component 3 forms a compound motion mode of lifting motion and rotational motion. This design enables the brush 304 to maintain high-speed rotation in the vertical reciprocating stroke, and significantly improves the filter hole dredging efficiency through the superposition of double motion, which not only ensures the stable output of cleaning force, but also effectively avoids the wear of solid deposits on the moving pair. This innovative structure, through the synergistic effect of mechanical linkage and physical isolation, minimizes the frequency of equipment maintenance while ensuring the cleaning efficiency of the filter plate.

[0032] The second purification component B includes a purification reaction pool 8, an overflow partition 9 is provided near the upper end of the purification reaction pool 8, and a stirring shaft 7 is provided inside the purification reaction pool 8; the second purification component B adopts an overflow-precipitation composite separation structure, and is provided with an inverted cone pool body 802 and an overflow partition 9. The purified liquid is discharged by overflowing upward, and the solid matter formed after the chemical reaction sinks to the inverted cone pool body 802 due to gravity. The inverted cone pool body 802 and the main pool body 801 are physically isolated by the slag cone 10, which effectively prevents the precipitated solid phase matter from re-entering the main pool body 801 due to fluid disturbance. Finally, the purified liquid and solid matter can be effectively separated to ensure that the purification process does not cause secondary pollution.

[0033] The purification reaction tank 8 includes a main tank body 801, the lower end of the main tank body 801 is connected to the inverted cone tank body 802, a slag cone 10 is arranged 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 arranged 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, and the two are mixed in the main tank body 801 through stirring by the stirring shaft 7.

[0034] The stirring shaft 7 is connected to the purification stirring motor 6. The stirring shaft 7 includes a main shaft body 701, and a number of transverse shafts 702 are vertically connected to the main shaft body 701. The midpoints of the transverse shafts 702 are connected to the main shaft body 701. When viewed from the radial projection plane of the main shaft body 701, an angle is formed between different transverse shafts 702. Paddle plates 703 are also provided at both ends of the transverse shafts 702. Therefore, when the stirring shaft 7 rotates, multiple points inside the main pool body 801 can be stirred by the paddle plates 703, so that multi-directional fluid shearing is formed during the rotation process, ensuring that the reaction medium is fully mixed in three-dimensional space.

[0035] An overflow partition 9 is provided with an overflow water channel 901. The overflow water channel 901 includes a first water channel 9011, a second water channel 9012 and a third water channel 9013 that communicate with each other. An angle is formed between the first water channel 9011 and the second water channel 9012, and an angle is formed between the second water channel 9012 and the third water channel 9013. Therefore, even if solid substances enter the first water channel 9011 driven by the water flow, it is difficult to pass through the angle between the first water channel 9011 and the second water channel 9012. Through the setting of the double angle, the solid substances cannot finally pass through the overflow partition 9.

[0036] An overflow water tank 806 is also provided at the upper end of the main pool body 801. The overflow water tank 806 is connected to the purified liquid outlet 807. The purified liquid overflows from the bottom end of the overflow water channel 901 to the upper end of the overflow water channel 901, then overflows to the overflow water tank 806, and finally flows out through the purified liquid outlet 807. A waste residue outlet 803 is provided at the bottom side of the inverted cone pool body 802. The waste residue outlet 803 is regularly cleared through a high-pressure slag discharge pump. Due to the action of gravity, the solid substances fall from the conical surface of the slag separation frustum 10, then fall into the inverted cone pool body 802 through the side holes of the slag separation frustum 10, and finally are discharged through the waste residue outlet 803. Through the optimization of fluid dynamics, this structure realizes a high solid phase interception rate while ensuring the treatment efficiency, and the system operation stability is improved compared with the traditional structure.

[0037] 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 embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. However, 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 electrolytic waste liquid treatment device for indium 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 on the waste liquid; The first purification component (A) includes an electrolytic plate (5). An electrolytic plate scraping component (4) is arranged above the electrolytic plate (5). The electrolytic plate scraping component (4) is provided with a scraper (4034). The scraper (4034) is arranged on both sides of the electrolytic plate (5). When the scraper (4034) moves downward, it maintains a constant contact pressure with the plate surface of the electrolytic plate (5) through a mechanical locking mechanism to ensure effective peeling of the electrolytically deposited solid substances; during the upward movement of the scraper (4034), the rigid constraint is released, enabling the scraper (4034) to have an adaptive avoidance function to avoid unnecessary collisions with the residues on the plate surface.

2. The electrolytic waste liquid treatment device for indium metal processing according to claim 1, characterized in that, The electrolytic plate scraping component (4) includes a lifting head (40314). The scraping lifting base (404) moves back and forth along the vertical direction of the electrolytic plate (5). The scraping lifting base (404) is connected to a 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 knife sleeve (4033). The scraper (4034) is inserted into the knife sleeve (4033). The knife sleeve (4033) is provided with a shaft hole (40331) and a locking slot (40332). A scraper locking rod (4031) is slidably inserted into the pin sliding groove (40321). 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 in an inverted triangular shape; When the locking pin (40311) is inserted into the locking slot (40332), the relative position of the knife sleeve (4033) and the swing base (4032) is fixed. At this time, the blade of the scraper (4034) fits the plate 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 located in the locking slot (40332), the knife sleeve (4033) can swing around the rotating swing shaft (40322).

3. The electrolytic waste liquid treatment device for indium metal processing according to claim 2, characterized in that, The electrolytic plate (5) is detachably arranged in an electrolytic box body (1). A cleaning installation main board (2) is arranged above the electrolytic box body (1); The scraper locking rod (4031) is further provided with a plug rod (40312). One end of the plug rod (40312) is connected to the locking pin (40311). 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). A spring (4035) is arranged at the lower end of the lifting head (40314); The scraping and lifting base (404) is provided with a lifting spring groove (4041). One end of the spring (4035) away from the lifting head (40314) is connected to the inner bottom surface of the lifting spring groove (4041), and the lifting head (40314) is slidably inserted into the lifting spring groove (4041).

4. The electrolytic waste liquid treatment device for indium metal processing according to claim 3, wherein, One side of the plug rod (40312) is provided with a limiting transverse socket (40313); The side of the scraping and lifting base (404) is connected to an angular limiting power mechanism (402). The angular 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 scraping and lifting base (404) moves downward, the limiting pin (4022) is inserted into the limiting transverse socket (40313). At this time, the locking pin (40311) is inserted into the locking slot (40332); When the scraping and lifting base (404) moves to the 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 end surface of the scraping and 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 scraping and lifting base (404) moves upward and returns to the uppermost position, the upper end surface of the scraping and lifting base (404) fits against the lower end surface of the cleaning mounting main board (2). The lower end 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), and the limiting pin (4022) is inserted into the limiting transverse socket (40313) under the push of the limiting power cylinder (4021).

5. The electrolytic waste liquid treatment device for indium metal processing according to claim 4, wherein, The cleaning mounting main board (2) is connected to a second cylinder (401) and a second linear bearing (405). The output end of the second cylinder (401) is connected to the scraping and lifting base (404), and the scraping and lifting base (404) is slidably connected to the second linear bearing (405).

6. The electrolytic waste liquid treatment device for indium metal processing according to claim 5, characterized in that, The electrolysis box body (1) includes a main box body (101). Two layers of middle filter plates (102) are arranged in the middle of the main box body (101). The lower end of the middle filter plate (102) is connected to an inclined plate (103). One end of the inclined plate (103) connected to the middle filter plate (102) is higher than the end connected to the inner side wall of the main box body (101). Two waste residue outlets (104) are arranged on both sides of the main box body (101). The waste residue outlets (104) are located at the bottommost end of the inclined plate (103), and the waste residue outlets (104) are externally connected to a waste residue extraction pump; The lower end of the main box body (101) is in an inverted cone shape, and a primary purified liquid outlet (105) is arranged at the inverted cone shape at the lower end of the main box body (101); The electrolytic plate (5) includes an electrolytic plate main body (501). On both sides of the upper end of the electrolytic plate main body (501), there are fixed edge grooves (502). The fixed edge grooves (502) are hung on the side plates of the main box body (101). The electrolytic plate (5) is arranged on both sides of two middle filter plates (102). The electrolytic liquid passes through the filter holes of the middle filter plates (102) to reach the middle of the two middle filter plates (102), and finally is discharged through the primary purified liquid outlet (105).

7. The electrolytic waste liquid treatment device for indium metal processing according to claim 6, characterized in that, The cleaning and installation main board (2) is also connected with a filtering and cleaning component (3). The filtering and cleaning component (3) includes a first cylinder (301) and a first linear bearing (302). The first cylinder (301) is connected with a cleaning lifting base (303); The cleaning lifting base (303) is provided with a cleaning lifting rod (3031). The cleaning lifting rod (3031) is slidably connected with the first linear bearing (302); The cleaning lifting base (303) is also provided with an avoidance groove (3032). When the cleaning lifting base (303) moves up and down, the two middle filter plates (102) are movably inserted into the avoidance groove (3032); The cleaning lifting base (303) is connected with a cleaning drive motor (305) and a brush (304). The cleaning drive motor (305) is connected with a motor pulley. The brush (304) is connected with a 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, and finally drives the brush (304) to rotate.

8. The electrolytic waste liquid treatment device for indium metal processing according to any one of claims 1 to 7, characterized in that, The second purification component (B) includes a purification reaction tank (8). An overflow partition (9) is arranged near the upper end of the purification reaction tank (8). A stirring shaft (7) is arranged 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 with an inverted cone tank body (802). A slag separation cone (10) is arranged between the main tank body (801) and the inverted cone tank body (802). A reaction liquid inlet (804) and a waste water inlet (805) are arranged on both sides of the main tank body (801); A waste residue outlet (803) is arranged at the bottom side of the inverted cone tank body (802).

9. The electrolytic waste liquid treatment device for indium metal processing according to claim 8, wherein, The stirring shaft (7) is connected with a purification stirring motor (6). The stirring shaft (7) includes a main shaft body (701). A plurality of cross shafts (702) are vertically connected to the main shaft body (701). The midpoints of the cross shafts (702) are connected with the main shaft body (701). When viewed from the radial projection plane of the main shaft body (701), an angle is formed between different cross shafts (702); Paddle plates (703) are also arranged at both ends of the cross shaft (702).

10. The electrolytic waste liquid treatment device for indium metal processing according to claim 9, wherein, An overflow water channel (901) is arranged in the overflow partition (9). The overflow water channel (901) includes a first water channel (9011), a second water channel (9012) and a third water channel (9013) that are communicated with each other; An overflow water tank (806) is also arranged at the upper end of the main tank body (801). The overflow water tank (806) is connected with a 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 water tank (806), and finally flows out through the purified liquid outlet (807).

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