A semiconductor softening wastewater treatment process

Abstract

The present invention relates to the technical field of semiconductor wastewater softening treatment, and specifically to a semiconductor softened wastewater treatment process, including a fixing unit and a scale scraping unit. The present invention forms a semi-closed space with an upward opening between the closed frame and the bottom of the electrolytic cell. By the cooperation of the scale scraping frame one and the scale scraping frame two, while scraping the water scale, the water scale particles are agitated to ensure the suction filtration effect of the suction filtration frame. The suction filtration frame is used to extract and filter the wastewater and water scale particles in the semi-closed space. The filtered wastewater is discharged to the remaining parts of the electrolytic cell through the suction filtration frame. During the entire descaling process, there is no need to disassemble and clean the electrolytic cell and the electrode plates, reducing the workload of the operators during descaling and reducing the time for delaying the normal use of the electrolytic cell. Moreover, the water scale on the surface of a single cathode plate can be cleaned as needed, avoiding the situation that some cathode plates with less water scale on the surface are severely worn due to synchronous cleaning of the water scale on the surfaces of all cathode plates, thus affecting their service life.

Description

Technical Field

[0001] The present invention relates to the technical field of semiconductor wastewater softening treatment, and specifically to a semiconductor softening wastewater treatment process. Background Art

[0002] Semiconductor wastewater refers to the wastewater containing various pollutants generated during the semiconductor manufacturing process, which mainly comes from multiple processes such as raw material processing, wafer preparation, cleaning, etching, electroplating, and grinding. Semiconductor wastewater has the following characteristics: complex composition, high pollution concentration, large pH value fluctuation, high toxicity, and concentration volatility. Therefore, it needs to be treated before discharge to meet the discharge standards.

[0003] The semiconductor production wastewater treatment process mainly includes the following steps: pretreatment, classification treatment, advanced treatment, and discharge up to standard or reuse. Among them, the advanced treatment includes an electrolysis treatment method. The electrolysis treatment can change the hardness of the wastewater, convert the hard water into soft water, and avoid eutrophication of water bodies, soil hardening, affecting water quality and the ecosystem, and even having an impact on human health when discharged into the external environment. However, after a long time of electrolysis treatment, calcium hydroxide and magnesium hydroxide crystals, that is, water scale, are generated on the surface of the cathode plate in the electrolytic cell. If not cleaned in time, it will affect the normal use of the subsequent cathode plate. Traditional scale removal methods include mechanical scale removal and electrochemical scale removal. Mechanical scale removal cleans the equipment through mechanical force to remove the water scale. This method does not require the use of any chemical reagents, so it has less impact on the environment. Electrochemical scale removal decomposes the water scale by using the electrochemical principle, which requires a high technical level and equipment. In order to reduce the cost of wastewater treatment, only mechanical scale removal is targeted here. Mechanical scale removal mainly includes: grinding wheel polishing method, wire brush removal method, high-pressure water jet cleaning method, drill bit drilling method, and scraper scraping method.

[0004] The traditional mechanical scale removal treatment method is to drain the wastewater, then disassemble between the electrolytic cell and the electrode plate, and then synchronously remove the scale and clean multiple electrode plates. When disassembling the electrode plates, the workload of the operators is relatively large. After scale removal, the electrode plates also need to be installed, thus delaying the normal use of the electrolytic cell. Moreover, mechanical scale removal generally synchronously cleans the water scale on the surfaces of all cathode plates at one time, resulting in relatively large wear on some cathode plates with less water scale on the surface during this process, thus affecting their service life. Summary of the Invention

[0005] In view of the above problems, the embodiments of the present application provide a semiconductor softening wastewater treatment process to solve the technical problems in the related art that the workload of operators during scale removal is relatively large and the service life of some cathode plates is affected due to excessive grinding. To achieve the above object, the embodiments of the present application provide the following technical solutions.

[0006] A semiconductor softening wastewater treatment process according to an embodiment of the present application includes the following steps: S1. Pretreatment: First, pretreat the wastewater generated during the semiconductor manufacturing process. The pretreated wastewater is subjected to coagulation precipitation and preliminary filtration.

[0007] S2. Precipitation and filtration: Add an oxidant to the wastewater after preliminary filtration for oxidation treatment and adjust the pH value. Add a chemical precipitant to the wastewater to form precipitates of heavy metal ions in the wastewater, and then filter again.

[0008] S3. Electrolysis treatment: Pass the wastewater after re-filtration into an electrolytic cell for electrolysis treatment. During the electrolysis process, oxidation and reduction reactions occur at the anode and cathode respectively. Calcium hydroxide and magnesium hydroxide crystals are generated on the surface of the cathode plate to soften the wastewater.

[0009] S4. Discharge the wastewater: Discharge the wastewater after electrolysis from the equipment.

[0010] S5. Scrape the scale: Scrape the scale generated on the surface of the cathode plate in the electrolytic cell used in S3.

[0011] Among them, step S5 is completed with the cooperation of an electrode plate scale treatment device. The scale treatment device includes a fixing unit and a scale scraping unit. The fixing unit is used in cooperation with the electrolytic cell, and the scale scraping unit is arranged on the fixing unit to scrape the scale on the surface of the electrode plate. The fixing unit includes a contact block, on which a first clamping frame and a second clamping frame are arranged. A distance control cylinder is fixedly installed at the upper end of the contact block, and a moving block is fixedly installed at the telescopic end of the distance control cylinder. The scale scraping unit includes a first control frame. A first control frame and a second control frame are arranged on the moving block. A closed frame is jointly arranged between the first control frame and the second control frame. A suction filtration frame is fixedly installed at the upper end of the moving block. A first scale scraping frame is symmetrically fixedly installed on the left and right sides of the moving block, and a second scale scraping frame is symmetrically fixedly installed on the front and back sides of the moving block.

[0012] According to an embodiment of the present invention, the first clamping frame includes a first bidirectional screw. A first bidirectional screw in the left-right direction is rotatably connected to the contact block. The first bidirectional screw is symmetrically connected to a first clamping plate by screw threads on the left and right. Guide rods that penetrate the first clamping plate in the left-right direction are symmetrically fixedly installed on the front and back of the contact block.

[0013] According to an embodiment of the present invention, the second clamping frame includes a second bidirectional screw. A second bidirectional screw in the front-back direction is rotatably connected to the contact block and located above the first bidirectional screw. The second bidirectional screw is symmetrically connected to a second clamping plate by screw threads in the front and back. A second guide rod is fixedly installed on the contact block, and the second guide rod penetrates the second clamping plate in the front-back direction.

[0014] According to an embodiment of the present invention, the control frame 1 includes a bidirectional screw 3, a bidirectional screw 3 in left and right directions is rotatably connected to the moving block, the bidirectional screw 3 is symmetrically connected to the compensation plate 1 in a threaded manner, and a guide rod 3 is fixedly installed on the moving block symmetrically front and back, and the guide rod 3 slides left and right and penetrates the compensation plate 1.

[0015] According to an embodiment of the present invention, the control frame 2 includes a bidirectional screw rod 4, a bidirectional screw rod 4 in the front-to-back direction is rotatably connected to the moving block, the bidirectional screw rod 4 is symmetrically connected to the compensation plate 2 in a threaded manner in the front-to-back direction, and a guide rod 4 is fixedly installed symmetrically on the left-right direction of the moving block, and the guide rod 4 slides forward and backward and penetrates the compensation plate 2.

[0016] According to an embodiment of the present invention, the closed frame includes a right-angle plate, a compensation plate 1 is symmetrically connected to the right-angle plate in a front-to-back sliding fit manner, a cylindrical spring 1 is fixedly connected between the right-angle plate and the compensation plate 1, two right-angle plates opposite to each other on the left and right are connected to the corresponding compensation plate 2 in a left-right sliding fit manner, a cylindrical spring 2 is fixedly connected between the right-angle plate and the compensation plate 2, and rubber blocks are fixedly installed on the lower ends of the right-angle plate, the compensation plate 1 and the compensation plate 2.

[0017] According to an embodiment of the present invention, the filtration rack includes a filter tank, the filter tank is fixedly installed on the upper end of the movable block, conveying groups are symmetrically arranged on the left and right ends of the filter tank, the conveying group is composed of front-to-back symmetrical conveying pumps, conveying pipes are fixedly installed on the conveying pumps, drainage pipes are symmetrically fixedly installed on the left and right sides of the middle of the filter tank, a filter plate is fixedly installed on the inner end of the drainage pipe, and the ends of the conveying pipes are fixedly connected to the corresponding right-angle plates.

[0018] According to an embodiment of the present invention, the scraper frame 1 includes an electric push rod 1, on which the moving block is symmetrically fixedly installed with the electric push rod 1, the electric push rod 1 is located directly below the bidirectional screw rod 3, a vertical plate 1 is fixedly installed at the telescopic end of the electric push rod 1, a motor 1 is fixedly installed at the front end of the vertical plate 1 through a motor seat, a sprocket 1 is fixedly installed on the output shaft of the motor 1 through a coupling, two sprockets 2 arranged up and down are rotatably connected to the vertical plate 1, a sprocket 3 is fixedly installed at the front end of the upper sprocket 2, the sprocket 1 and the sprocket 3 are connected for transmission by a toothed chain belt 1, the sprockets 2 are connected for transmission by a toothed chain belt 2, and scrapers are evenly fixedly installed on the toothed chain belt 2. The structure of the scraper frame 2 is the same as that of the scraper frame 1, and only the size is different.

[0019] According to an embodiment of the present invention, anti-blocking grooves are provided on the vertical plate one and above and below the toothed chain belt two. Positioning blocks are symmetrically connected to the anti-blocking grooves through pin shafts. A cleaning column brush is connected to the positioning blocks through a common rotation. A torsion spring is sleeved on the pin shaft. One end of the torsion spring is fixedly connected to the positioning block, and the other end of the torsion spring is fixedly connected to the vertical plate one.

[0020] According to an embodiment of the present invention, winding columns are rotatably connected to both sides of the compensation plate one adjacent to two right-angled plates and both sides of the compensation plate two adjacent to two right-angled plates. A plastic film is wound around the winding columns, and the end of the plastic film is fixedly connected to the adjacent right-angled plate. Volute springs are fixedly installed near the winding columns on both the compensation plate one and the compensation plate two, and the ends of the volute springs are fixedly connected to the winding columns.

[0021] From the above technical solutions, the following advantages of the present invention can be seen:

[0022] 1. The present invention can be used alone or in combination with acid solution. First, the acid solution is sprayed onto the surface of the cathode plate in the electrolytic cell for reaction. After a period of time, the water scale is loosened or even separated from the cathode plate. At this time, a semi-closed space with an upward opening is formed between the sealing frame and the bottom of the electrolytic cell. In the semi-closed space, the first scale scraping frame and the second scale scraping frame cooperate with each other. The first scale scraping frame removes scale from the left and right end faces of the cathode plate, and at the same time, the second scale scraping frame stirs the water scale particles in the semi-closed space. The first scale scraping frame is returned to the initial position, and then the second scale scraping frame removes scale from the front and back end faces of the cathode plate, and at the same time, the first scale scraping frame stirs the water scale particles in the semi-closed space to ensure the suction filtration effect of the suction filtration frame. During the entire scale removal process, the water and water scale particles in the semi-closed space are extracted and filtered through the suction filtration frame, and the filtered waste water is discharged to other parts of the electrolytic cell through the suction filtration frame. During the entire scale removal process, there is no need to disassemble and clean the electrolytic cell and the electrode plates, reducing the workload of the operators during scale removal, reducing the time for delaying the normal use of the electrolytic cell, and the scale on the surface of a single cathode plate can be cleaned as needed, avoiding excessive wear on the cathode plates with less scale on the surface during synchronous cleaning of the scale on the surfaces of all cathode plates, thereby affecting their service life.

[0023] 2. In the present invention, through the cooperation of the first scale scraping frame and the second scale scraping frame, when one of them scrapes the scale, the other stirs the scale to prevent a large amount of scale particles from precipitating, ensuring the suction filtration effect of the suction filtration frame.

[0024] 3. In the present invention, the scale attached to the surface of the scale scraping knife is cleaned by the cleaning column brush, and the cleaning column brush that is not stressed is driven by the torsion spring to return to the initial position, facilitating the cleaning of the scale attached to the surface of the next scale scraping knife.

[0025] 4. In the present invention, the plastic film is always in a tensioned state through the volute spring, so as to adapt to the distance between the right-angled plate and the compensation plate one and the distance between the right-angled plate and the compensation plate two, preventing the water scale particles in the semi-closed space from entering the electrolytic cell through the semi-closed space. By extracting and filtering the water scale particles in the semi-closed space, it is avoided that the suspended water scale particles flow back into the electrolytic cell and agglomerate on the electrode plates again.

[0026] In addition to the technical problems solved by the embodiments of the present application described above, the technical features constituting the technical solutions, and the beneficial effects brought by the technical features of these technical solutions, other technical problems that can be solved by the semiconductor softening wastewater treatment process provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought by these technical features will be further described in detail in the specific implementation manners. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the provided drawings without creative efforts.

[0028] Figure 1 The process diagram of treating semiconductor wastewater of the scale treatment equipment is shown.

[0029] Figure 2 The front view three-dimensional structure schematic diagram of the scale treatment equipment when in use is shown.

[0030] Figure 3 The left view three-dimensional structure schematic diagram of the scale treatment equipment when in use is shown.

[0031] Figure 4 The front view sectional plane structure schematic diagram of the filter plate and the distance control cylinder is shown.

[0032] Figure 5 Shown is Figure 4 The partial enlarged view at M of

[0033] Figure 6 Shown is Figure 4 The partial enlarged view at E of

[0034] Figure 7 The left view three-dimensional structure schematic diagram of the scale treatment equipment with the closed frame removed is shown.

[0035] Figure 8 Shown is Figure 7 The partial enlarged view at N of

[0036] Figure 9 The front view three-dimensional structure schematic diagram of the scale treatment equipment with the closed frame removed is shown.

[0037] Figure 10 The top view sectional structure schematic diagram of the compensation plate one, the compensation plate two and the right-angle plate is shown.

[0038] Among them, the above-mentioned drawings include the following reference numerals:

[0039] 1. Fixing unit; 11. Contact block; 12. Clamping frame 1; 121. Bidirectional screw 1; 122. Clamping plate 1; 123. Guide rod 1; 13. Clamping frame 2; 131. Bidirectional screw 2; 132. Clamping plate 2; 133. Guide rod 2; 14. Distance control cylinder; 15. Moving block; 2. Scaling unit; 21. Control frame 1; 211. Bidirectional screw 3; 212. Compensation plate 1; 213. Guide rod 3; 22. Control frame 2; 221. Bidirectional screw 4; 222. Compensation plate 2; 223. Guide rod 4; 23. Enclosure frame; 231. Right-angle plate; 2311. Winding column; 2312. Plastic film; 2313. Volute spring; 232. Cylindrical spring 1; 233. Cylindrical spring 2; 234. Rubber block; 24. Suction filtration frame; 241. Filter tank; 242. Delivery pump; 243. Delivery pipe; 244. Drain pipe; 245. Filter plate; 25. Scaling frame 1; 251. Electric push rod 1; 252. Vertical plate 1; 2521. Anti-blocking groove; 2522. Positioning block; 2523. Cleaning column brush; 2524. Torsion spring; 253. Motor 1; 254. Sprocket 1; 255. Sprocket 2; 256. Sprocket 3; 257. Tooth chain belt 1; 258. Tooth chain belt 2; 259. Scaling knife; 26. Scaling frame 2. Detailed implementation manners

[0040] To make the above objects, features, and advantages of the present invention more apparent and understandable, the following will describe the detailed implementation manners of the present invention with reference to the accompanying drawings. Many specific details are set forth in the following description to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0041] Refer to Figure 1 、 Figure 2 And Figure 4 , a semiconductor softening wastewater treatment process, comprising the following steps: S1. Pretreatment: First, the wastewater generated during the semiconductor manufacturing process is pretreated, and the pretreated wastewater is subjected to coagulation precipitation and preliminary filtration.

[0042] S2. Precipitation filtration: An oxidant is added to the wastewater after preliminary filtration for oxidation treatment and the pH value is adjusted. A chemical precipitant is added to the wastewater to form precipitates of heavy metal ions in the wastewater, and then filtration is performed again.

[0043] S3. Electrolysis treatment: The wastewater after re-filtration is introduced into an electrolytic cell for electrolysis treatment. During the electrolysis process, oxidation and reduction reactions occur at the anode and cathode respectively, and calcium hydroxide and magnesium hydroxide crystals are generated on the surface of the cathode plate to soften the wastewater.

[0044] S4. Wastewater discharge: Discharge the electrolyzed wastewater from the equipment.

[0045] S5. Scale scraping: Scrape the scale generated on the surface of the cathode plate in the electrolytic cell used in S3.

[0046] Among them, step S5 is completed with the cooperation of an electrode plate scale treatment device. The scale treatment device includes a fixing unit 1 and a scale scraping unit 2. The fixing unit 1 is used in cooperation with the electrolytic cell, and the scale scraping unit 2 is arranged on the fixing unit 1 to scrape the scale on the surface of the electrode plate. The fixing unit 1 includes a contact block 11. A clamping frame one 12 and a clamping frame two 13 are arranged on the contact block 11. A distance control cylinder 14 is fixedly installed at the upper end of the contact block 11, and a moving block 15 is fixedly installed at the telescopic end of the distance control cylinder 14. The scale scraping unit 2 includes a control frame one 21. A control frame one 21 and a control frame two 22 are arranged on the moving block 15. A closed frame 23 is jointly arranged between the control frame one 21 and the control frame two 22. A suction filtration frame 24 is fixedly installed at the upper end of the moving block 15. Scale scraping frames one 25 are symmetrically fixedly installed on the left and right sides of the moving block 15, and scale scraping frames two 26 are symmetrically fixedly installed on the front and back sides of the moving block 15. When there is more scale on the surface of a certain cathode plate in the electrolytic cell, first spray and react with acid solution on the surface of the cathode plate in the electrolytic cell. After a period of time, the scale is loosened or even detached from the cathode plate. Then use a hoisting device to place the contact block 11 on the cathode plate to be scraped. At this time, adjust the clamping frame one 12 and the clamping frame two 13 through the motor to make the contact block 11 located at the upper middle part of the cathode plate and fixedly connected to the cathode plate. At this time, according to the size of the cathode plate, adjust the control frame one 21 and the control frame two 22, so as to adjust the size of the closed frame 23, so that the internal space size of the closed frame 23 is larger than the size of the cathode plate. At this time, drive the moving block 15 to move downward through the distance control cylinder 14, so as to drive the scale scraping frames one 25, the scale scraping frames two 26 and the closed frame 23 to move downward together until the closed frame 23 and the bottom of the electrolytic cell form a semi-closed space with an upward opening. Inject water into the semi-closed space. At this time, perform scale removal treatment on the left and right end faces of the cathode plate through the scale scraping frames one 25. Restore the scale scraping frames one 25 to the initial position, and then perform scale removal treatment on the front and back end faces of the cathode plate through the scale scraping frames two 26. At the same time, the scale scraping frames one 25 continue to move to stir the water and scale particles in the semi-closed space to prevent a large amount of scale particles from precipitating. During the entire scale removal process, the water and scale particles in the semi-closed space are extracted and filtered through the suction filtration frame 24. The filtered water is discharged into the electrolytic cell through the suction filtration frame 24, and the residual acid in the water is used to pickle the surface of other cathode plates, so that the scale on the surface of the cathode plate with less scale is loosened or even detached from it. Then, through the process of draining and injecting water, the scale on the surface of the cathode plate is washed, so that the surface of the cathode plate with less scale on the rest of the surface does not need to be scraped, reducing its surface wear.

[0047] Refer to Figure 7 and Figure 9 , the clamping frame 12 includes a bidirectional screw 121. A bidirectional screw 121 in the left - right direction is rotatably connected to the contact block 11. The bidirectional screw 121 is symmetrically connected to the clamping plates 122 on the left and right in a threaded connection manner. Guide rods 123 are symmetrically and fixedly installed on the front and back of the contact block 11. The guide rods 123 slidably penetrate through the clamping plates 122 in the left - right direction. By rotating the bidirectional screw 121, the clamping plates 122 are driven to squeeze and fix the left and right ends of the cathode plate.

[0048] Refer to Figure 7 , the clamping frame 13 includes a bidirectional screw 131. A bidirectional screw 131 in the front - back direction is rotatably connected to the contact block 11 and located above the bidirectional screw 121. The bidirectional screw 131 is symmetrically connected to the clamping plates 132 on the front and back in a threaded connection manner. Guide rods 133 are fixedly installed on the contact block 11 and slidably penetrate through the clamping plates 132 in the front - back direction. By rotating the bidirectional screw 131, the clamping plates 132 are driven to squeeze and fix the front and back ends of the cathode plate.

[0049] Refer to Figure 3 、 Figure 6 and Figure 10 , the control frame 21 includes a bidirectional screw 211. A bidirectional screw 211 in the left - right direction is rotatably connected to the moving block 15. The bidirectional screw 211 is symmetrically connected to the compensation plates 212 on the left and right in a threaded connection manner. Guide rods 213 are symmetrically and fixedly installed on the front and back of the moving block 15. The guide rods 213 slidably penetrate through the compensation plates 212 in the left - right direction. According to the length of the cathode plate, by rotating the bidirectional screw 211, the compensation plates 212 are driven to move, and the distance between the compensation plates 212 is adjusted.

[0050] Refer to Figure 3 and Figure 10 , the control frame 22 includes a bidirectional screw 221. A bidirectional screw 221 in the front - back direction is rotatably connected to the moving block 15. The bidirectional screw 221 is symmetrically connected to the compensation plates 222 on the front and back in a threaded connection manner. Guide rods 223 are symmetrically and fixedly installed on the left and right of the moving block 15. The guide rods 223 slidably penetrate through the compensation plates 222 in the front - back direction. According to the width of the cathode plate, by rotating the bidirectional screw 221, the compensation plates 222 are driven to move, and the distance between the compensation plates 222 is adjusted.

[0051] Refer to Figure 10The closed frame 23 includes a right-angle plate 231, each compensation plate 1 212 is connected to the right-angle plate 231 in a front-to-back sliding manner, and a cylindrical spring 1 232 is fixedly connected between the right-angle plate 231 and the compensation plate 1 212. The two right-angle plates 231 opposite to each other on the left and right are connected to the corresponding compensation plate 222 in a left-right sliding manner, and a cylindrical spring 233 is fixedly connected between the right-angle plate 231 and the compensation plate 222. The lower ends of the plate 1 212 and the compensation plate 222 are fixedly mounted with rubber blocks 234; the rubber blocks 234 make the right-angle plate 231, the compensation plate 1 212 and the compensation plate 222 all closely adhere to the bottom of the electrolytic cell to prevent the scraped scale from entering the rest of the electrolytic cell from the closing frame 23; the cylindrical spring 1 232 cooperates with the cylindrical spring 233 to balance the forces between the right-angle plate 231 and the compensation plate 1 212 and between the right-angle plate 231 and the compensation plate 222.

[0052] See also Figure 3 and Figure 4 The filtration frame 24 includes a filter tank 241, the filter tank 241 is fixedly installed on the upper end of the moving block 15, and conveying groups are symmetrically arranged on the left and right ends of the filter tank 241. The conveying group is composed of a conveying pump 242 that is symmetrical in front and back. A conveying pipe 243 is fixedly installed on the conveying pump 242. A drain pipe 244 is symmetrically fixedly installed on the left and right sides of the middle of the filter tank 241. A filter plate 245 is fixedly installed on the inner end of the drain pipe 244. The ends of the conveying pipe 243 are fixedly connected to the corresponding right-angle plate 231; scale particles and wastewater are sucked into the filter tank 241 together through the conveying pump 242, and the filtered wastewater is sent to the electrolytic cell through the filter plate 245 and the drain pipe 244, and the scale remains in the filter tank 241.

[0053] See also Figure 5 , Figure 7 and Figure 9 The scraper frame 25 includes an electric push rod 251, and the moving block 15 is symmetrically fixed with the electric push rod 251. The electric push rod 251 is located directly below the bidirectional screw rod 3 211. A vertical plate 252 is fixedly installed at the telescopic end of the electric push rod 251. A motor 253 is fixedly installed at the front end of the vertical plate 252 through a motor seat. A sprocket 254 is fixedly installed on the output shaft of the motor 253 through a coupling. Two sprockets 255 arranged up and down are rotatably connected to the vertical plate 252. A sprocket 3 256 is fixedly installed at the front end of the sprocket 255 on the upper side. The sprocket 1 254 and the sprocket 3 256 are connected by a toothed chain belt 257 for transmission, and the sprockets 255 are connected by a toothed chain belt 258 for transmission. Scrapers 259 are evenly fixedly installed on the toothed chain belt 258. The structure of the scraper frame 26 is the same as that of the scraper frame 25, and only the size is different.

[0054] The motor 1 253 drives the sprocket 1 254 to rotate. With the cooperation of the tooth chain belt 1 257, the sprocket 2 255 rotates. With the cooperation of the tooth chain belt 2 258, the sprockets 2 255 on the upper and lower sides rotate synchronously, thereby driving the descaling knife 259 on the tooth chain belt 2 258 to move. The electric push rod 1 251 drives the vertical plate 1 252 to move towards the cathode plate, thereby driving the descaling knife 259 to move towards and contact the scale on the left and right sides of the surface of the cathode plate, so as to scrape off the scale. At the same time, the descaling frame 2 26 starts to stir the scale particles in the semi-closed space with an upward opening formed by the closed frame 23 and the bottom of the electrolytic cell. When it is necessary for the descaling frame 2 26 to scrape off the scale on the front and back sides of the surface of the cathode plate, the electric push rod 1 251 drives the vertical plate 1 252 to move towards the side away from the cathode plate, and at the same time, the tooth chain belt 2 258 continues to move, so as to stir the scale particles in the semi-closed space with an upward opening formed by the closed frame 23 and the bottom of the electrolytic cell, preventing them from precipitating in large amounts and affecting the suction filtration effect of the suction filtration frame 24.

[0055] Refer to Figure 5 And Figure 8 , on the vertical plate 1 252 and above and below the tooth chain belt 2 258, anti-blocking grooves 2521 are opened. The positioning blocks 2522 are symmetrically connected by pins in a front-back manner in the anti-blocking grooves 2521. A cleaning column brush 2523 is rotatably connected between the positioning blocks 2522. A torsion spring 2524 is sleeved on the pin. One end of the torsion spring 2524 is fixedly connected to the positioning block 2522, and the other end of the torsion spring 2524 is fixedly connected to the vertical plate 1 252; when the descaling knife 259 moves into the anti-blocking groove 2521, the descaling knife 259 first contacts the cleaning column brush 2523, and the cleaning column brush 2523 cleans the scale attached to the surface of the descaling knife 259. When the descaling knife 259 continues to move, the cleaning column brush 2523 is subjected to resistance, driving the positioning block 2522 to rotate. After the descaling knife 259 smoothly moves out of the anti-blocking groove 2521, driven by the torsion spring 2524, the cleaning column brush 2523 returns to the initial position.

[0056] Refer to Figure 6 And Figure 10 , on the compensation plate 1 212 and near one side of two adjacent right-angle plates 231, and on the compensation plate 2 222 and near one side of two adjacent right-angle plates 231, winding columns 2311 are rotatably connected. Plastic films 2312 are wound around the winding columns 2311. The ends of the plastic films 2312 are fixedly connected to the adjacent right-angle plates 231. Scroll springs 2313 are fixedly installed on the compensation plate 1 212 and the compensation plate 2 222 near the winding columns 2311. The ends of the scroll springs 2313 are fixedly connected to the winding columns 2311; the scroll springs 2313 keep the plastic films 2312 always in a tension state, so as to adapt to the distances between the right-angle plate 231 and the compensation plate 1 212 and between the right-angle plate 231 and the compensation plate 2 222.

[0057] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "middle part", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "end", "axial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the present invention.

[0058] In addition, the terms "first", "second", "No. 1", "No. 2", "one", "two" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0059] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "arranged", "connected", "installed", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection, a sliding connection; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0060] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be covered within the protection scope of the present invention.

Claims

1. An electrode plate scale treatment device, characterized in that The scale treatment device includes a fixed unit and a scraping unit. The fixed unit is used in conjunction with the electrolytic cell. The scraping unit is arranged on the fixed unit and is used to scrape off the scale on the surface of the electrode plate. The fixing unit comprises a contact block, a clamping frame 1 and a clamping frame 2 are arranged on the contact block, a distance control cylinder is fixedly installed on the upper end of the contact block, and a moving block is fixedly installed on the telescopic end of the distance control cylinder; The scraping unit comprises a control frame 1, a control frame 1 and a control frame 2 are arranged on the moving block, a closed frame is arranged between the control frame 1 and the control frame 2, a suction filter frame is fixedly installed on the upper end of the moving block, a scraping frame 1 is fixedly installed symmetrically on the left and right of the moving block, and a scraping frame 2 is fixedly installed symmetrically on the front and back of the moving block; The scraper frame 1 comprises an electric push rod 1, a moving block is symmetrically fixedly installed with an electric push rod 1, a telescopic end of the electric push rod 1 is fixedly installed with a vertical plate 1, a motor 1 is fixedly installed at the front end of the vertical plate 1 through a motor seat, a sprocket 1 is fixedly installed on the output shaft of the motor 1 through a coupling, two sprockets 2 arranged up and down are rotatably connected on the vertical plate 1, a sprocket 3 is fixedly installed at the front end of the sprocket 2 on the upper side, the sprocket 1 and the sprocket 3 are connected by a toothed chain belt 1, the sprockets 2 are connected by a toothed chain belt 2, and the toothed chain belt 2 is evenly fixedly installed with scrapers, and the structure of the scraper frame 2 is the same as that of the scraper frame 1, and only the size is different; According to the size of the cathode plate, the size of the closed frame is adjusted through the control frame 1 and the control frame 2. The distance control cylinder drives the closed frame to move downward through the moving block to form a semi-enclosed space with an opening upward with the bottom of the electrolytic cell; The closed frame includes a right-angle plate; the filtration frame includes a filter tank, the filter tank is fixedly installed on the upper end of the movable block, and conveying groups are symmetrically arranged on the left and right ends of the filter tank. The conveying group is composed of a front-to-back symmetrical conveying pump, and conveying pipes are fixedly installed on the conveying pumps. Drain pipes are symmetrically fixedly installed on the left and right sides of the middle of the filter tank, and a filter plate is fixedly installed on the inner end of the drain pipe, and the ends of the conveying pipes are fixedly connected to the corresponding right-angle plates.

2. The scale treatment device for an electrode plate according to claim 1, characterized in that: The clamping frame includes a bidirectional screw, a bidirectional screw in the left and right directions is rotatably connected to the contact block, the bidirectional screw is symmetrically connected to the clamping plate in a threaded connection, and a guide rod is fixedly installed on the contact block symmetrically front and back, and the guide rod slides left and right and passes through the clamping plate.

3. An electrode plate scale treatment device according to claim 1, characterized in that: The second clamping frame includes two bidirectional screws, and two bidirectional screws are rotatably connected to the front and rear directions on the contact block and located on the upper side of the first bidirectional screw. The second bidirectional screw is symmetrically connected to the clamping plate two by threaded connection, and two guide rods are fixedly installed on the contact block and slide forward and backward and penetrate the clamping plate two.

4. An electrode plate scale treatment device according to claim 1, characterized in that: The control frame 1 includes a bidirectional screw 3, an electric push rod 1 is located directly below the bidirectional screw 3, the moving block is rotatably connected to the bidirectional screw 3 in the left and right directions, the bidirectional screw 3 is symmetrically connected to the compensation plate 1 in a threaded connection, and the moving block is fixedly installed with a guide rod 3 symmetrically front and back, and the guide rod 3 slides left and right and passes through the compensation plate 1.

5. An electrode plate scale treatment device according to claim 4, characterized in that: The control frame II includes a bidirectional screw IV. A bidirectional screw IV in the front-back direction is rotatably connected to the moving block. The bidirectional screw IV is symmetrically connected to the compensation plate II in the front and back by means of threaded connection. Guide rods IV are symmetrically and fixedly installed on the left and right of the moving block, and the guide rods IV slide through the compensation plate II in the front and back direction.

6. An electrode plate scale treatment device according to claim 4, characterized in that: The compensation plate I is symmetrically connected to the right-angled plates in the front and back by means of front-back sliding fit. A cylindrical spring I is fixedly connected between the right-angled plate and the compensation plate I. The two relatively left and right right-angled plates are connected to the corresponding compensation plate II by means of left-right sliding fit. A cylindrical spring II is fixedly connected between the right-angled plate and the compensation plate II. Rubber blocks are fixedly installed at the lower ends of the right-angled plate, the compensation plate I and the compensation plate II.

7. An electrode plate scale treatment device according to claim 1, characterized in that: Anti-blocking grooves are provided above and below the tooth chain belt II on the vertical plate I. Positioning blocks are symmetrically and rotatably connected in the front and back in the anti-blocking grooves by means of pin shafts. A cleaning column brush is rotatably connected between the positioning blocks. A torsion spring is sleeved on the pin shaft. One end of the torsion spring is fixedly connected to the positioning block, and the other end of the torsion spring is fixedly connected to the vertical plate I.

8. An electrode plate scale treatment device according to claim 6, characterized in that: Winding columns are rotatably connected to one side of the compensation plate I close to two adjacent right-angled plates and one side of the compensation plate II close to two adjacent right-angled plates. Plastic films are wound around the winding columns. The ends of the plastic films are fixedly connected to the adjacent right-angled plates. Scroll springs are fixedly installed at the positions of the compensation plate I and the compensation plate II close to the winding columns. The ends of the scroll springs are fixedly connected to the winding columns.

Images