Electrolytic copper foil wastewater treatment device and treatment method

Abstract

The invention discloses an electrolytic copper foil wastewater treatment device, and belongs to the technical field of wastewater treatment devices.The electrolytic copper foil wastewater treatment device comprises a vortex reaction barrel, a surrounding plate is coaxially arranged outside the vortex reaction barrel, an interlayer space is formed between the vortex reaction barrel and the surrounding plate, and an annular filter screen is arranged in the interlayer space in the vertical direction in a sliding mode to drive a rotating shaft to rotate; the copper foil wastewater rises to the edge of the upper end of the vortex reaction cylinder, overflows to the annular filter screen and is filtered by the annular filter screen, floccules are retained on the upper surface of the annular filter screen, and liquid enters an interlayer space below the annular filter screen and is discharged; the rotating shaft rotates to drive the scraping plate to rotate, the scraping plate collects floccules on the upper surface of the annular filter screen, and when the scraping plate rotates to the baffle, the floccules are gathered on the scraping plate; the rotating shaft drives the baffle plate to rotate through the intermittent mechanism, so that the baffle plate pushes the gathered floccules to the discharge notch to be discharged, and the floccules are collected into a sludge tank below; the purpose of continuous treatment of the copper foil wastewater is achieved, and the treatment efficiency of the copper foil wastewater is improved.

Description

Technical Field

[0001] The present invention relates to a wastewater treatment device, and particularly to an electrolytic copper foil wastewater treatment device and a treatment method thereof. Background Art

[0002] At present, there are three main processes in electrolytic copper foil production: solution copper foil production, surface treatment, and product slitting. Although its production process seems simple, it integrates electronics, machinery, and electrochemistry, and is a production process with particularly strict requirements for the production environment. The copper foil machine consists of a cathode roller and an anode tank. The anode tank is connected to the positive pole of the power supply, and the cathode roller is connected to the negative pole of the power supply. When the copper sulfate electrolyte enters the anode tank, an electric field is formed between the positive and negative poles. Under the action of the electric field, copper ions migrate to the surface of the cathode roller and deposit. The deposited copper is very thin, is peeled off from the cathode roller and wound on another roller. In this way, the electrolyte continuously circulates, and copper ions continuously deposit on the cathode roller under the action of the electric field, are continuously peeled off and collected on the take-up reel, realizing the production of copper foil.

[0003] Electrolytic copper foil wastewater refers to the wastewater generated during the production of electrolytic copper foil. This kind of wastewater usually contains various pollutants and needs to be treated in multiple stages. The existing treatment methods generally include pretreatment (filtering suspended solids and particulate matter in the wastewater); removing heavy metal ions by adding alkaline substances such as lime and sodium hydroxide to adjust the pH value of the wastewater, so that copper ions form insoluble hydroxide precipitates; adding flocculants such as polyaluminum chloride and polyacrylamide to the wastewater to make the fine particles in the wastewater coagulate into larger flocs, facilitating subsequent solid-liquid separation; through the action of gravity, the flocculated solid particles settle to the bottom to form sludge, and the supernatant enters the next treatment unit; further removing the suspended solids that have not been completely removed in the sedimentation tank. Commonly used filtering equipment includes sand filters, activated carbon filters, etc.

[0004] The treatment process of copper foil wastewater: Add alkali solution, flocculant, and coagulant aid to the wastewater tank. After mixing and reacting to produce flocs, enter the eddy current reaction clarifier for solid-liquid separation. The separated precipitate enters the sludge tank; the liquid enters the vertical flow sedimentation tank for further solid-liquid separation. The separated precipitate enters the sludge tank; the upper layer liquid further undergoes solid-liquid or liquid-liquid separation through the GSF combinator suspension machine. The separated solid enters the sludge tank; the upper layer liquid enters the clear water tank and is discharged after activated filtration; finally, the substances collected in the sludge tank enter the filter press through the sludge screw pump. The liquid treated by the filter press enters the wastewater tank for circular treatment, and the filter cake is transported out.

[0005] The existing separation trough for flocs and wastewater adopts a filtration method. When treating wastewater, the solid impurities such as the filtered flocs are regularly cleaned. When cleaning the flocs, the filtration of wastewater also needs to be stopped, reducing the treatment efficiency. At the same time, the filter screen needs to be regularly maintained and cleaned after a long service time, increasing the downtime for treating wastewater and also reducing the treatment efficiency.

[0006] After retrieval, the patent number is: CN 216513199 U, which provides a wastewater treatment device for electrolytic copper foil, including a base. A filtration mechanism, a stirring mechanism, and a standing mechanism are sequentially arranged on the upper end of the base from left to right. The filtration mechanism and the stirring mechanism are connected by a liquid guide pipe. A purification mechanism is arranged between the stirring mechanism and the standing mechanism. The horizontal heights of the filtration mechanism, the stirring mechanism, and the standing mechanism decrease in sequence. The structure of the utility model is simple, the cost is low, and the treatment effect is good, which can bring convenience to the copper foil processing technology field.

[0007] During the use of the filter screen of the filtration mechanism in the above solution, the solids filtered out need to be regularly cleaned, which reduces the efficiency of treating wastewater. Summary of the Invention

[0008] The purpose of the present invention is to provide a wastewater treatment device and method for electrolytic copper foil, which can achieve the purpose of continuous treatment of copper foil wastewater and increase the treatment efficiency of copper foil wastewater.

[0009] The present invention adopts the following technical solution: A wastewater treatment device for electrolytic copper foil includes a vortex reaction cylinder. A surrounding plate is coaxially arranged outside the vortex reaction cylinder. A sandwich space is formed between the vortex reaction cylinder and the surrounding plate. An annular filter screen is slidably arranged in the sandwich space along the up and down direction. A box body is fixedly arranged on the outer surface of the vortex reaction cylinder below the annular filter screen. The internal space of the box body is communicated with the upper sandwich space. A liquid outlet communicated with the internal space is arranged at the outer end of the box body; A rotating shaft is rotatably connected in the vortex reaction cylinder. A plurality of groups of driving blades are fixedly arranged on the outer surface of the rotating shaft in the vortex reaction cylinder along the up and down direction; A cross bar is fixedly arranged at the top end of the rotating shaft. A scraping plate is fixedly arranged at the outer end of the cross bar along the vertical direction. The lower end surface of the scraping plate is attached to the annular filter screen; A discharge notch is arranged on the surrounding plate. A baffle is arranged on the annular filter screen corresponding to the discharge notch. An intermittent mechanism is arranged between the bottom end of the rotating shaft and the baffle. The execution end of the intermittent mechanism is connected to the baffle. A reset mechanism is arranged below the annular filter screen.

[0010] Preferably, the intermittent mechanism includes a synchronous transmission mechanism and a cam assembly. The rotating shaft drives the cam assembly to rotate through the synchronous transmission mechanism. The cam assembly drives the baffle to rotate counterclockwise by ninety degrees when the scraping plate just disengages from the baffle.

[0011] Preferably, a hinge shaft is slidably arranged in the inner edge of the annular filter screen in the vertical direction. The hinge shaft is slidably arranged in the baffle in the vertical direction. A torsion spring is arranged on the hinge shaft. One end of the torsion spring is fixedly arranged with the hinge shaft, and the other end of the torsion spring is fixedly arranged with the eddy reaction cylinder. A limiting rod is fixedly arranged on the upper end surface of the annular filter screen on one side of the baffle. The torsion spring drives the baffle to rotate clockwise until the baffle contacts the limiting rod.

[0012] Preferably, the cam assembly includes a driving wheel fixedly arranged at the execution end of the synchronous transmission mechanism. A cam fixedly arranged with the eddy reaction cylinder is rotatably connected to the outer surface of the hinge shaft. The bottom end of the hinge shaft extends downward to the lower part of the driving wheel and is fixedly arranged with a blocking rod in the radial direction. A ejector rod is slidably arranged in the driving wheel in the vertical direction. A top pressure spring is sleeved on the ejector rod above the driving wheel. The bottom end of the top pressure spring is fixedly arranged with the driving wheel, and the top end of the top pressure spring is fixedly arranged with the ejector rod. The top pressure spring always drives the ejector rod to move upward, so that the top end of the ejector rod always contacts the lower end surface of the cam.

[0013] Preferably, a guide block is fixedly arranged on the hinge shaft below the annular filter screen. One end of the torsion spring is fixedly arranged with the guide block, and the other end of the torsion spring is fixedly arranged with the upper end surface of the cam.

[0014] Preferably, a sleeve is fixedly arranged on the lower end surface of the annular filter screen. The guide block is located in the sleeve. The reset mechanism includes a reset spring fixedly arranged between the lower end surface of the sleeve and the upper end surface of the cam.

[0015] Preferably, the lower end surface of the cam includes a base surface and a convex surface. When the top end of the ejector rod contacts the base surface under the drive of the top pressure spring, the height of the lower end surface of the ejector rod is greater than or equal to the upper end surface of the blocking rod; when the top end of the ejector rod contacts the convex surface under the drive of the top pressure spring, the height of the lower end surface of the ejector rod is less than the upper end surface of the blocking rod; the fan-shaped area of the convex surface meets the requirement that the ejector rod drives the hinge shaft to rotate by 90 degrees through the blocking rod; a transition arc is arranged between the convex surface and the base surface.

[0016] Preferably, two scrapers, baffles and discharge notches are symmetrically arranged, and two synchronous transmission mechanisms and intermittent mechanisms are correspondingly arranged.

[0017] Preferably, a receiving groove is formed in the lower end surface of the surrounding plate. The annular filter screen is slidably arranged in the receiving groove of the surrounding plate; a constraint ring plate is fixedly arranged on the lower end surface of the annular filter screen along the circumferential direction. The shape of the constraint ring plate converges downward. A ring body is fixedly arranged on the lower end surface of the constraint ring plate. The ring body is slidably arranged in an arc groove formed in the upper end surface of the box body. The internal space of the constraint ring plate is communicated with the internal space of the box body.

[0018] A method for treating electrolytic copper foil wastewater based on an electrolytic copper foil wastewater treatment device, characterized in that: S1: Mix copper foil wastewater, alkali solution, flocculant and coagulant aid in a mixing cabinet; S2: Drain the copper foil wastewater in the mixing cabinet into a vortex reaction cylinder through a pump; S3: The wastewater enters from the bottom of the vortex reaction cylinder and moves upward to drive the driving blades to rotate. When the wastewater moves upward, vortices are generated under the rotation of the driving blades, so that the copper foil wastewater, alkali solution, flocculant and coagulant aid are fully mixed and react to produce flocs; S4: The rotating shaft drives the scraper to rotate counterclockwise through the cross bar. The scraper collects the flocs on the upper surface of the annular filter screen to the baffle and presses the baffle to move downward; S5: The baffle drives the annular filter screen to move downward. When the scraper crosses the baffle, the baffle and the annular filter screen move upward under the push of the reset spring, so that the upper end surface of the annular filter screen contacts the inner top wall of the accommodating groove and vibrates, so that the blocked flocs on the annular filter screen are shaken off to prevent the annular filter screen from being blocked; S6: At the same time, the rotating shaft drives the driving wheel to rotate through the driving wheel, synchronous belt, driven wheel and vertical shaft. The driving wheel drives the ejector rod to rotate. The top end of the ejector rod always contacts the lower end surface of the cam while following the rotation of the driving wheel under the drive of the pressing spring; when the scraper just disengages from the baffle, the top end of the ejector rod is restricted by the convex surface of the cam and moves downward, so that the bottom end of the ejector rod moves downward. When the driving wheel rotates, it can drive the hinged shaft to rotate counterclockwise through the contact between the bottom end of the ejector rod and the blocking rod. The hinged shaft rotates 90 degrees and drives the blocking rod to rotate 90 degrees counterclockwise to push the flocs gathered here to the discharge notch for discharge, and the flocs fall into the sludge pool below; S7: The wastewater filtered by the annular filter screen is discharged from the box body, and then undergoes multi-stage precipitation in multiple vertical flow sedimentation tanks. The precipitated sludge is discharged to the sludge pool, and the final clear water is filtered through activated carbon and the like, and finally clear water meeting the standards is obtained; S8: The sludge in the sludge pool enters the filter press through the sludge screw pump. The liquid treated by the filter press enters the wastewater tank for cyclic treatment, and the filter cake is transported out.

[0019] 1. The present invention is provided with a vortex reaction cylinder, an annular filter screen, a rotating shaft, driving blades, a scraper, a baffle, an intermittent mechanism and a reset mechanism. During use, after adding lye, a flocculant and a coagulant aid, the copper foil wastewater enters from the bottom end of the vortex reaction cylinder and rises to push the driving blades to rotate, thereby driving the rotating shaft to rotate. The rotation of the driving blades acts on the copper foil wastewater in reverse, causing the copper foil wastewater to generate a vortex during the rising process. The copper foil wastewater, lye, flocculant and coagulant aid react in a vortex state to produce flocs. The copper foil wastewater rises to the edge at the upper end of the vortex reaction cylinder and overflows onto the annular filter screen and is filtered through the annular filter screen. The flocs are retained on the upper surface of the annular filter screen, and the liquid enters the sandwich space below the annular filter screen and is discharged. While the rotating shaft rotates, it drives the scraper to rotate. The scraper scrapes and collects the flocs on the upper surface of the annular filter screen. When the scraper rotates to the baffle, the flocs accumulate at the scraper. When the scraper contacts the baffle, the scraper presses the baffle to move downward, causing the baffle to drive the annular filter screen to move downward. When the scraper rotates to the other side of the baffle, the reset mechanism causes the annular filter screen to move upward and vibrate, so that the blocked flocs on the annular filter screen are shaken off to prevent the annular filter screen from being blocked. At the same time, the rotating shaft drives the baffle to rotate through the intermittent mechanism, so that the baffle pushes the accumulated flocs to the discharge notch for discharge, and then converges into the sludge tank below. The purpose of continuous treatment of copper foil wastewater is achieved, and the treatment efficiency of copper foil wastewater is improved.

[0020] 2. The present invention is provided with a driving wheel, a cam, a push rod, a blocking rod and a top pressure spring. During the use of this device, the rotating shaft drives the driving wheel to rotate synchronously, and the driving wheel drives the push rod to rotate. When the scraper just disengages from the baffle, the top end of the push rod is restricted by the lower end surface of the cam and moves downward, causing the bottom end of the push rod to move downward. When the driving wheel rotates, it can drive the articulated shaft to rotate counterclockwise through the contact between the bottom end of the push rod and the blocking rod. When the articulated shaft rotates 90 degrees and drives the blocking rod to rotate 90 degrees counterclockwise to push the flocs accumulated here to the discharge notch for discharge, the lower end surface of the cam releases the restriction on the top end of the push rod, and the push rod moves upward under the drive of the top pressure spring until the bottom end of the push rod disengages from the contact with the blocking rod, and the driving wheel rotation no longer drives the articulated shaft to rotate. The articulated shaft rotates clockwise under the action of the torsion spring and drives the baffle to contact the limit rod. The purpose of driving the baffle to rotate 90 degrees counterclockwise when the scraper just disengages from the baffle is achieved, and further the purpose of the baffle pushing the accumulated flocs to the discharge notch for discharge is achieved, and the purpose of continuous treatment of copper foil wastewater and improving the treatment efficiency is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the overall three-dimensional structure diagram of the present invention; Figure 2 is the front view structure diagram of the present invention; Figure 3 is the three-dimensional structure diagram of the mixing cabinet in the present invention; Figure 4 It is a three-dimensional structural schematic diagram of the box body in the present invention; Figure 5 It is a front view structural schematic diagram of the box body in the present invention; Figure 6 It is a three-dimensional structural schematic diagram of the driving blade in the present invention; Figure 7 It is a three-dimensional structural schematic diagram of the interior of the discharge hopper in the present invention; Figure 8 It is a three-dimensional structural schematic diagram of the cross bar in the present invention; Figure 9 It is a three-dimensional structural schematic diagram of the interior of the box body in the present invention; Figure 10 It is a three-dimensional structural schematic diagram of the interior of the eddy current reaction cylinder in the present invention; Figure 11 It is a three-dimensional structural schematic diagram of the annular filter screen in the present invention; Figure 12 It is a three-dimensional structural schematic diagram of the flat plate in the present invention; Figure 13 It is a structural schematic diagram of the position A in

[12] in the present invention; Figure 14 It is a three-dimensional structural schematic diagram of the interior of the sleeve in the present invention; Figure 15 It is a three-dimensional structural schematic diagram of the driving wheel in the present invention; Figure 16 It is a three-dimensional structural schematic diagram of the baffle in the present invention; Figure 17 It is a three-dimensional structural schematic diagram of the cam in the present invention; Figure 18 It is a three-dimensional structural schematic diagram of the separated state of the enclosing plate, eddy current reaction cylinder, annular filter screen and box body in the present invention; Figure 19 It is a three-dimensional structural schematic diagram of the annular filter screen in the present invention.

[0022] In the figure, 1 is a vortex reaction cylinder; 2 is a retaining plate; 3 is an annular filter screen; 4 is a box body; 5 is a liquid outlet; 6 is a rotating shaft; 7 is a driving blade; 8 is a cross bar; 9 is a scraper; 10 is a discharge notch; 11 is a baffle; 12 is a hinge shaft; 13 is a torsion spring; 14 is a limiting rod; 15 is a driving wheel; 16 is a cam; 17 is a blocking rod; 18 is a jacking rod; 19 is a jacking spring; 20 is a guiding block; 21 is a sleeve; 22 is a return spring; 23 is a base surface; 24 is a convex surface; 25 is an end plate; 26 is a roller; 27 is a receiving groove; 28 is a restraining ring plate; 29 is a ring body; 30 is an arc groove; 31 is a driving wheel; 32 is a vertical shaft; 33 is a driven wheel; 34 is a synchronous belt; 35 is a fixing plate; 36 is a flat plate; 37 is a support plate; 38 is a discharge hopper; 39 is a sludge pool; 40 is a mixing cabinet; 41 is a chemical addition pipe; 42 is a feeding hopper; 43 is a connecting pipe; 44 is a vertical flow sedimentation tank; 45 is an inclined surface; 46 is a slide rail. Detailed implementation mode

[0023] Please refer to Figure 1-19 , and the present invention will be described in detail below in conjunction with the drawings and embodiments: The electrolytic copper foil wastewater treatment device described in the present invention includes a vortex reaction cylinder 1. An outer retaining plate 2 is coaxially arranged outside the vortex reaction cylinder 1. A sandwich space is formed between the vortex reaction cylinder 1 and the retaining plate 2. An annular filter screen 3 is slidably arranged in the sandwich space in the vertical direction. The outer surface of the vortex reaction cylinder 1 below the annular filter screen 3 is fixedly provided with a box body 4. The internal space of the box body 4 is communicated with the upper sandwich space. A liquid outlet 5 communicated with the internal space is opened at the outer end of the box body 4; a rotating shaft 6 is rotatably connected in the vortex reaction cylinder 1. A plurality of groups of driving blades 7 are fixedly arranged on the outer surface of the rotating shaft 6 in the vortex reaction cylinder 1 in the vertical direction; a cross bar 8 is fixedly arranged at the top end of the rotating shaft 6. A scraper 9 is fixedly arranged at the outer end of the cross bar 8 in the vertical direction. The lower end surface of the scraper 9 is attached to the annular filter screen 3; a discharge notch 10 is opened on the retaining plate 2. A baffle 11 is arranged on the annular filter screen 3 corresponding to the discharge notch 10. An intermittent mechanism is arranged between the bottom end of the rotating shaft 6 and the baffle 11. The execution end of the intermittent mechanism is connected to the baffle 11. A reset mechanism is arranged below the annular filter screen 3.

[0024] In use, after adding lye, flocculant and coagulant aid, the copper foil wastewater enters from the bottom end of the eddy current reaction cylinder 1. The copper foil wastewater rises upward in the eddy current reaction cylinder 1 to push the driving blade 7 to rotate, thereby driving the rotating shaft 6 to rotate. The rotation of the driving blade 7 reacts on the copper foil wastewater, causing the copper foil wastewater to generate eddy currents during the rising process. The copper foil wastewater, lye, flocculant and coagulant aid react in the state of eddy currents to produce flocs; the copper foil wastewater rises to the edge at the upper end of the eddy current reaction cylinder 1 and overflows into the sandwich space formed between the eddy current reaction cylinder 1 and the enclosure plate 2, and passes through the filtration of the annular filter screen 3. The flocs are retained on the upper surface of the annular filter screen 3, and the liquid enters the sandwich space below the annular filter screen 3 and enters the internal space of the box body 4. The copper foil wastewater converges in the internal space of the box body 4 and flows out from the liquid outlet 5; the purpose of reacting the copper foil wastewater in the eddy current reaction cylinder 1 to produce flocs and separating the flocs from the copper foil wastewater through the annular filter screen 3 is realized; the lower end surface of each cross bar 8 is slidably connected to the upper end surface of the eddy current reaction cylinder 1, improving the smoothness of the rotation of the rotating shaft 6.

[0025] While the rotating shaft 6 rotates, it also drives the cross bar 8 to rotate. The cross bar 8 drives the scraping plate 9 to rotate. The scraping plate 9 scrapes and collects the flocs on the upper surface of the annular filter screen 3. When the scraping plate 9 rotates to the baffle 11, the flocs collected by the scraping plate 9 are blocked by the baffle 11, causing the flocs to accumulate at the scraping plate 9; when the scraping plate 9 contacts the baffle 11, the scraping plate 9 presses the baffle 11 to move downward, causing the baffle 11 to drive the annular filter screen 3 to move downward away from the initial position. When the scraping plate 9 rotates to the other side of the baffle 11, the reset mechanism causes the annular filter screen 3 to move upward to the initial position. When the annular filter screen 3 moves upward and resets to the initial position, the annular filter screen 3 vibrates, causing the blocked flocs on the annular filter screen 3 to be shaken off, preventing the annular filter screen 3 from being blocked. The vibration effect of the annular filter screen 3 can extend the cleaning, maintenance and repair cycle of the annular filter screen 3; when the annular filter screen 3 moves upward and resets to the initial position, the rotating shaft 6 drives the baffle 11 to rotate through the intermittent mechanism, causing the baffle 11 to push the accumulated flocs to the discharge notch 10 for discharge, and then collecting them in the sludge pool 39 below; the substances collected in the sludge pool 39 are subjected to subsequent centralized treatment, enter the filter press through the sludge screw pump, the liquid after the filter press treatment enters the wastewater tank for cyclic treatment, and the filter cake is transported out.

[0026] In order to achieve the purpose of facilitating the scraping plate 9 to press the baffle 11 to move downward, in this embodiment, the scraping plate 9 is provided with an inclined surface 45 on the side corresponding to the baffle 11. When the scraping plate 9 contacts the baffle 11, the scraping plate 9 contacts the baffle 11 through the inclined surface 45, causing the baffle 11 to move downward and pushing the annular filter screen 3 to move downward.

[0027] To Figure 11Taking the top view as the direction reference, in this embodiment, the intermittent mechanism includes a synchronous transmission mechanism and a cam assembly. The rotating shaft 6 drives the cam assembly to rotate through the synchronous transmission mechanism, and the cam assembly drives the baffle 11 to rotate counterclockwise by ninety degrees when the scraper 9 just disengages from the baffle 11. During use, the rotating shaft 6 rotates driven by the driving blade 7. The rotating shaft 6 drives the scraper 9 to rotate counterclockwise through the cross bar 8. The scraper 9 collects the flocs on the upper surface of the annular filter screen 3 to the baffle 11 and presses the baffle 11 to move downward. The baffle 11 drives the annular filter screen 3 to move downward. When the scraper 9 passes over the baffle 11, the baffle 11 and the annular filter screen 3 move upward under the push of the reset mechanism, so that the annular filter screen 3 is reset. At the same time, the rotating shaft 6 drives the cam assembly to rotate through the synchronous transmission mechanism, and the cam assembly drives the baffle 11 to rotate counterclockwise by ninety degrees when the scraper 9 just disengages from the baffle 11, so that the baffle 11 pushes the flocs gathered here to the discharge notch 10 for discharge, achieving the purpose of separating and discharging the solid matter in the copper foil wastewater for centralized treatment.

[0028] In this embodiment, a hinge shaft 12 is slidably arranged in the annular filter screen 3 in the up-and-down direction. The hinge shaft 12 is slidably arranged in the baffle 11 in the up-and-down direction. A torsion spring 13 is arranged on the hinge shaft 12. One end of the torsion spring 13 is fixedly arranged with the hinge shaft 12, and the other end of the torsion spring 13 is fixedly arranged with the eddy reaction cylinder 1. A limiting rod 14 is fixedly arranged on the upper end surface of the annular filter screen 3 on one side of the baffle 11. The torsion spring 13 drives the baffle 11 to rotate clockwise until the baffle 11 contacts the limiting rod 14. At this time, the baffle 11 is in the initial position.

[0029] In this embodiment, the cam assembly includes a driving wheel 15 fixedly arranged at the execution end of the synchronous transmission mechanism. A cam 16 fixedly arranged with the eddy current reaction cylinder 1 is rotatably connected to the outer surface of the hinge shaft 12. The bottom end of the hinge shaft 12 extends downward to the lower part of the driving wheel 15 and is fixedly provided with a blocking rod 17 along the radial direction. A push rod 18 is slidably arranged in the driving wheel 15 in the up-and-down direction. A pressing spring 19 is sleeved on the push rod 18 above the driving wheel 15. The bottom end of the pressing spring 19 is fixedly arranged with the driving wheel 15, and the top end of the pressing spring 19 is fixedly arranged with the push rod 18. The pressing spring 19 always drives the push rod 18 to move upward, so that the top end of the push rod 18 always contacts the lower end surface of the cam 16. During use, the rotating shaft 6 drives the driving wheel 15 to rotate synchronously through the synchronous transmission mechanism. The driving wheel 15 drives the push rod 18 to rotate. The top end of the push rod 18 always contacts the lower end surface of the cam 16 while following the rotation of the driving wheel 15 under the drive of the pressing spring 19. When the scraper 9 just disengages from the baffle 11, the top end of the push rod 18 is restricted by the lower end surface of the cam 16 and moves downward, so that the bottom end of the push rod 18 moves downward. When the driving wheel 15 rotates, it can drive the hinge shaft 12 to rotate counterclockwise through the contact between the bottom end of the push rod 18 and the blocking rod 17. When the hinge shaft 12 rotates by ninety degrees (while driving the blocking rod to rotate counterclockwise by ninety degrees to push the flocs accumulated here to the discharge notch 10 for discharge), the lower end surface of the cam 16 releases the restriction on the top end of the push rod 18. The push rod 18 moves upward under the drive of the pressing spring 19 until the bottom end of the push rod 18 disengages from the contact with the blocking rod 17. The rotation of the driving wheel 15 no longer drives the hinge shaft 12 to rotate. The hinge shaft 12 rotates clockwise under the action of the torsion spring 13 and drives the baffle 11 to contact the limiting rod 14, so that the baffle 11 is reset to the initial position. When the rotating shaft 6 rotates one week and drives the scraper 9 to rotate to the initial position of the baffle 11 again, the above actions are repeated.

[0030] In this embodiment, a guide block 20 is fixedly arranged on the hinge shaft 12 below the annular filter screen 3. One end of the torsion spring 13 is fixedly arranged with the guide block 20, and the other end of the torsion spring 13 is fixedly arranged with the upper end surface of the cam 16. The torsion spring 13 drives the hinge shaft 12 to rotate clockwise.

[0031] In this embodiment, a sleeve 21 is fixedly arranged on the lower end surface of the annular filter screen 3. The guide block 20 is located inside the sleeve 21. The reset mechanism includes a reset spring 22 fixedly arranged between the lower end surface of the sleeve 21 and the upper end surface of the cam 16. The reset spring 22 drives the annular filter screen 3 to always move upward through the sleeve 21 until the inner ring edge of the annular filter screen 3 abuts against the outer surface of the eddy reaction cylinder 1. When the annular filter screen 3 moves downward under the pressure of the scraping plate 9, the annular filter screen 3 compresses the reset spring 22 through the sleeve 21. When the scraping plate 9 passes over the baffle 11, the reset spring 22 pushes the sleeve 21 upward, and then pushes the annular filter screen 3 upward, so that the annular filter screen 3 returns to the position where its inner ring edge abuts against the outer surface of the eddy reaction cylinder 1. After the scraping plate 9 passes over the baffle 11, when the reset spring 22 pushes the annular filter screen 3 upward through the sleeve 21 so that the inner ring edge of the annular filter screen 3 abuts against the outer surface of the eddy reaction cylinder 1, the annular filter screen 3 vibrates, so that the blocked flocs on the annular filter screen 3 are shaken off, preventing the annular filter screen 3 from being blocked.

[0032] In this embodiment, the lower end surface of the cam 16 includes a base surface 23 and a convex surface 24. When the top end of the ejector rod 18 contacts the base surface 23 under the drive of the ejector spring 19, the height of the lower end surface of the ejector rod 18 is greater than or equal to the upper end surface of the blocking rod 17, that is, when the driving wheel 15 rotates, it does not drive the hinge shaft 12 to rotate. When the top end of the ejector rod 18 contacts the convex surface 24 under the drive of the ejector spring 19, the height of the lower end surface of the ejector rod 18 is less than the upper end surface of the blocking rod 17, that is, when the driving wheel 15 rotates, it drives the hinge shaft 12 to rotate 90 degrees through the contact between the ejector rod 18 and the blocking rod 17. The fan-shaped area of the convex surface 24 meets the requirement that the ejector rod 18 drives the hinge shaft 12 to rotate 90 degrees through the blocking rod 17. In order to ensure that the top end of the ejector rod 18 smoothly transitions from the base surface 23 to the convex surface 24, a transition arc is arranged between the convex surface 24 and the base surface 23.

[0033] In this embodiment, an end plate 25 is fixedly arranged at the top end of the ejector rod 18. The top end of the ejector spring 19 is fixedly arranged with the end plate 25, and the bottom end of the ejector spring 19 is fixedly arranged with the upper end surface of the driving wheel 15. A roller 26 is rotatably connected to the upper end surface of the end plate 25. When the driving wheel 15 drives the ejector rod 18 to rotate, the top end of the ejector rod 18 slides on the lower end surface of the convex surface 24 through the roller 26.

[0034] In this embodiment, the flocs generated from the copper foil wastewater have adhesiveness and are not easy to collect. Two scraping plates 9, baffles 11 and discharge notches 10 can be symmetrically arranged, and two synchronous transmission mechanisms and intermittent mechanisms are correspondingly arranged.

[0035] In this embodiment, a receiving groove 27 is provided on the lower end surface of the enclosure 2, and the annular filter 3 is slidably arranged in the receiving groove 27 of the enclosure 2; the return spring 22 drives the annular filter 3 to move upward through the sleeve 21 until the upper end surface of the annular filter 3 contacts the inner top wall of the receiving groove 27; when the scraper 9 passes over the baffle 11, the return spring 22 pushes the sleeve 21 to move upward, and then pushes the annular filter 3 to move upward, so that the annular filter 3 returns to the position where its upper end surface contacts the inner top wall of the receiving groove 27; after the scraper 9 passes over the baffle 11, the return spring 22 pushes the annular filter 3 to move upward through the sleeve 21, so that the upper end surface of the annular filter 3 contacts the inner top wall of the receiving groove 27 to generate vibration, so that the flocs blocked on the annular filter 3 are shaken off, preventing the annular filter 3 from being blocked.

[0036] The return spring 22 drives the annular filter 3 to move upward through the sleeve 21 until the upper end face of the annular filter 3 contacts the inner top wall of the accommodating groove 27. There is a set gap between the inner ring edge of the annular filter 3 and the outer surface of the vortex reaction cylinder 1. The width of this gap is smaller than the mesh of the annular filter 3 and does not affect the filtering effect of the copper foil wastewater. The purpose is that when the annular filter 3 moves upward driven by the return spring 22, the outer end face of the annular filter 3 contacts the inner top wall of the accommodating groove 27 before the inner ring edge of the annular filter 3 contacts the outer surface of the vortex reaction cylinder 1, and the vibration effect generated by the annular filter 3 is better.

[0037] In this embodiment, a constraint ring plate 28 is fixedly provided on the lower end face of the annular filter 3 along the circumferential direction. The shape of the constraint ring plate 28 is contracted downward, and a ring body 29 is fixedly provided on the lower end face of the constraint ring plate 28. The ring body 29 is slidably arranged in the arc groove 30 opened on the upper end face of the box body 4 along the up and down directions. The internal space of the constraint ring plate 28 is connected with the internal space of the box body 4. The wastewater filtered by the annular filter 3 is collected in the internal space of the constraint ring plate 28, enters the internal space of the box body 4 and is then discharged from the liquid outlet 5; the accommodating groove 27 of the enclosure 2 and the arc groove 30 of the box body 4 both limit the up and down sliding of the annular filter 3. When the annular filter 3 moves up and down, it will not separate from the accommodating groove 27 of the enclosure 2 and the arc groove 30 of the box body 4, so that the annular filter 3 moves up and down more smoothly.

[0038] In this embodiment, the synchronous transmission mechanism includes a driving wheel 31 fixed to the bottom end of the rotating shaft 6, and a driven wheel 33 fixed to the driving wheel 15 through a vertical shaft 32; the driving wheel 31 and the driven wheel 33 are connected by a synchronous belt 34; the rotation of the rotating shaft 6 drives the driven wheel 33 to rotate through the driving wheel 31 and the synchronous belt 34, and the driven wheel 33 drives the driving wheel 15 to rotate through the vertical shaft 32, thereby achieving the purpose of driving the driving wheel 15 to rotate.

[0039] In this embodiment, a fixed plate 35 is rotatably connected to the upper part of the outer surface of the vertical shaft 32. The inner end of the fixed plate 35 is fixedly arranged with the box body 4. A flat plate 36 is fixedly arranged on the outer surface of the cam 16. A support plate 37 is fixedly arranged between the flat plate 36 and the fixed plate 35. The cam 16 is fixedly arranged with the eddy current reaction cylinder 1 through the flat plate 36, the support plate 37, the fixed plate 35 and the box body 4 in sequence. In this embodiment, a discharge hopper 38 is fixedly arranged at the position of the enclosure plate 2 corresponding to the discharge notch 10. The outer end of the flat plate 36 is fixedly arranged with the lower end surface of the discharge hopper 38. The flocs filtered out by the annular filter screen 3 are first collected by the scraper 9, and then pushed by the blocking rod 17 to enter the discharge hopper 38 through the discharge notch 10 for discharging, and then converge into the sludge pool 39 below.

[0040] In this embodiment, a chute is axially opened on the upper end surface of the hinge shaft 12. A slide rail 46 is fixedly arranged along the axis in the jack for the baffle 11 to pass through the hinge shaft 12. The hinge shaft 12 is slidably arranged up and down with the baffle 11 through the cooperation of the chute and the slide rail 46. When the baffle 11 is pressed by the scraper 9 and moves downward, the baffle 11 slides downward relative to the hinge shaft 12, and the hinge shaft 12 remains stationary. At the same time, the annular filter screen 3 moves downward. When the scraper 9 just disengages from the contact with the baffle 11, the return spring 22 pushes the annular filter screen 3 upward. At the same time, the driving wheel 15 drives the hinge shaft 12 to rotate, and the hinge shaft 12 drives the baffle 11 to rotate counterclockwise by ninety degrees, pushing the flocs gathered here out through the discharge notch 10 and entering the sludge pool 39 through the discharge hopper 38.

[0041] In this embodiment, a mixing cabinet 40 is arranged on the right side of the eddy current reaction cylinder 1. Two chemical addition pipes 41 communicating with the inside of the mixing cabinet 40 are arranged on the upper end surface of the mixing cabinet 40. A feeding hopper 42 is fixedly arranged on the right side surface of the mixing cabinet 40. A communicating pipe 43 is fixedly arranged on the lower end surface of the mixing cabinet 40. The other end of the communicating pipe 43 is fixedly arranged with the lower end surface of the eddy current reaction cylinder 1. During use, the copper foil wastewater is added into the mixing cabinet 40 from the feeding hopper 42, and then the lye, flocculant and coagulant aid are added into the mixing cabinet 40 through the chemical addition pipes 41 for mixing. Then, the wastewater in the mixing cabinet 40 is pumped out (not shown in the figure) and discharged into the eddy current reaction cylinder 1 through the communicating pipe 43. The wastewater enters from the bottom end of the eddy current reaction cylinder 1 and moves upward to drive the driving blades 7 to rotate. When the wastewater moves upward, eddy currents are generated simultaneously under the rotation of the driving blades 7, so that the copper foil wastewater is fully mixed with the lye, flocculant and coagulant aid to react and generate flocs.

[0042] In this embodiment, several interconnected vertical flow sedimentation tanks 44 are fixedly communicated with the position of the liquid outlet 5 on the box body 4; the filtered wastewater discharged from the box body 4 enters the first vertical flow sedimentation tank 44 for sedimentation, the supernatant of the first vertical flow sedimentation tank 44 enters the second vertical flow sedimentation tank 44 for sedimentation, and the supernatant of the second vertical flow sedimentation tank 44 enters the third vertical flow sedimentation tank 44, thus forming multi-stage sedimentation, and then through activated carbon filtration, etc., finally obtaining clear water that meets the standards; the sludge precipitated at the bottom of each vertical flow sedimentation tank 44 enters the sludge tank 39 through a sludge screw pump (not shown in the figure) for centralized treatment, and then the sludge in the sludge tank 39 enters a filter press through a sludge screw pump (not shown in the figure), the liquid treated by the filter press enters the wastewater tank for cyclic treatment, and the filter cake is transported out.

[0043] Working principle of the present invention: During use, the copper foil wastewater is added into the mixing cabinet 40 from the feeding hopper 42, and then mixed with the liquid added from the chemical dosing pipe 41 in the mixing cabinet 40. Then, the wastewater in the mixing cabinet 40 is pumped out through the connecting pipe 43 by a pump (not shown in the figure) and discharged into the eddy reaction cylinder 1. The wastewater enters from the bottom end of the eddy reaction cylinder 1 and moves upward, pushing the driving blade 7 to rotate. When the wastewater moves upward, an eddy current is generated under the rotation of the driving blade 7, enabling the copper foil wastewater to fully mix and react with the lye, flocculant, and coagulant aid, generating flocculants. The rotating shaft 6 drives the scraper 9 to rotate counterclockwise through the cross bar 8. The scraper 9 collects the flocculants on the upper surface of the annular filter screen 3 to the baffle 11 and presses the baffle 11 to move downward. The baffle 11 drives the annular filter screen 3 to move downward. When the scraper 9 passes over the baffle 11, the baffle 11 and the annular filter screen 3 move upward under the push of the return spring 22, causing the upper end surface of the annular filter screen 3 to contact the inner top wall of the accommodating groove 27 and generate vibration, so that the blocked flocculants on the annular filter screen 3 are shaken off to prevent the annular filter screen 3 from being blocked. At the same time, the rotating shaft 6 drives the driving wheel 15 to rotate through the driving pulley 31, synchronous belt 34, driven pulley 33, and vertical shaft 32. The driving wheel 15 drives the ejector rod 18 to rotate. The top end of the ejector rod 18 always contacts the lower end surface of the cam 16 while following the rotation of the driving wheel 15 under the drive of the ejecting spring 19. When the scraper 9 just disengages from the baffle 11, the top end of the ejector rod 18 is restricted by the convex surface 24 of the cam 16 and moves downward, causing the bottom end of the ejector rod 18 to move downward. When the driving wheel 15 rotates, it can drive the articulated shaft 12 to rotate counterclockwise through the contact between the bottom end of the ejector rod 18 and the blocking rod 17. When the articulated shaft 12 rotates 90 degrees (simultaneously driving the blocking rod to rotate 90 degrees counterclockwise to push the flocculants gathered here to the discharge notch 10 for discharge), the ejector rod 18 moves upward under the drive of the ejecting spring 19 and contacts the base surface 23 of the lower end surface of the cam 16 until the bottom end of the ejector rod 18 disengages from the contact with the blocking rod 17. The rotation of the driving wheel 15 no longer drives the articulated shaft 12 to rotate. The articulated shaft 12 rotates clockwise under the action of the torsion spring 13 and drives the baffle 11 to contact the limiting rod 14, causing the baffle 11 to return to the initial position. The flocculants on the annular filter screen 3 are discharged through the discharge notch 10 into the sludge tank 39. The wastewater filtered by the annular filter screen 3 is discharged from the box body 4, and then undergoes multi-stage precipitation in multiple vertical flow sedimentation tanks 44. The precipitated sludge is discharged to the sludge tank 39. The final clear water is further filtered through activated carbon, etc., and finally clear water meeting the standards is obtained. Then, the sludge in the sludge tank 39 enters the filter press through the sludge screw pump. The liquid treated by the filter press enters the wastewater tank for cyclic treatment, and the filter cake is transported out of the factory.

Claims

1. An electrolytic copper foil wastewater treatment device, characterized in that: It includes a vortex reaction cylinder. A shroud is coaxially arranged outside the vortex reaction cylinder. A sandwich space is formed between the vortex reaction cylinder and the shroud. An annular filter screen is slidably arranged in the sandwich space in the vertical direction. A box body is fixedly arranged on the outer surface of the vortex reaction cylinder below the annular filter screen. The internal space of the box body is communicated with the sandwich space above. A liquid outlet communicated with the internal space is arranged at the outer end of the box body. A rotating shaft is rotatably connected in the vortex reaction cylinder. A plurality of groups of driving blades are fixedly arranged on the outer surface of the rotating shaft in the vortex reaction cylinder in the vertical direction. A cross bar is fixedly arranged at the top end of the rotating shaft. A scraper is fixedly arranged at the outer end of the cross bar in the vertical direction. The lower end surface of the scraper is attached to the annular filter screen. A discharge notch is arranged on the shroud. A baffle is arranged on the annular filter screen corresponding to the discharge notch. An intermittent mechanism is arranged between the bottom end of the rotating shaft and the baffle. The execution end of the intermittent mechanism is connected to the baffle. A reset mechanism is arranged below the annular filter screen.

2. The electrolytic copper foil wastewater treatment device according to claim 1, characterized in that: The intermittent mechanism includes a synchronous transmission mechanism and a cam assembly. The rotating shaft drives the cam assembly to rotate through the synchronous transmission mechanism. The cam assembly drives the baffle to rotate counterclockwise by ninety degrees when the scraper just disengages from contact with the baffle.

3. The electrolytic copper foil wastewater treatment device according to claim 2, wherein: An articulated shaft is slidably arranged in the annular filter screen in the vertical direction. The articulated shaft is slidably arranged in the baffle in the vertical direction. A torsion spring is arranged on the articulated shaft. One end of the torsion spring is fixedly arranged with the articulated shaft. The other end of the torsion spring is fixedly arranged with the vortex reaction cylinder. A limiting rod is fixedly arranged on the upper end surface of the annular filter screen at one side of the baffle. The torsion spring drives the baffle to rotate clockwise until the baffle contacts the limiting rod.

4. The electrolytic copper foil wastewater treatment device according to claim 3, characterized in that: The cam assembly includes a driving wheel fixedly arranged at the execution end of the synchronous transmission mechanism. A cam fixedly arranged with the vortex reaction cylinder is rotatably connected to the outer surface of the articulated shaft. The bottom end of the articulated shaft extends downward to the lower part of the driving wheel and is fixedly arranged with a blocking rod in the radial direction. A push rod is slidably arranged in the driving wheel in the vertical direction. A top pressure spring is sleeved on the push rod above the driving wheel. The bottom end of the top pressure spring is fixedly arranged with the driving wheel. The top end of the top pressure spring is fixedly arranged with the push rod. The top pressure spring always drives the push rod to move upward, so that the top end of the push rod always contacts the lower end surface of the cam.

5. The electrolytic copper foil wastewater treatment device according to claim 4, wherein: A guiding block is fixedly arranged on the articulated shaft below the annular filter screen. One end of the torsion spring is fixedly arranged with the guiding block. The other end of the torsion spring is fixedly arranged with the upper end surface of the cam.

6. The electrolytic copper foil wastewater treatment device according to claim 5, wherein: A sleeve is fixedly arranged on the lower end surface of the annular filter screen. The guiding block is located in the sleeve. The reset mechanism includes a reset spring fixedly arranged between the lower end surface of the sleeve and the upper end surface of the cam.

7. The electrolytic copper foil wastewater treatment device according to claim 4, characterized in that: The lower end surface of the cam includes a base surface and a convex surface. When the top end of the push rod contacts the base surface under the drive of the top pressure spring, the height of the lower end surface of the push rod is greater than or equal to the upper end surface of the blocking rod. When the top end of the push rod contacts the convex surface under the drive of the top pressure spring, the height of the lower end surface of the push rod is less than the upper end surface of the blocking rod. The sector area of the convex surface meets the requirement that the push rod drives the articulated shaft to rotate by ninety degrees through the blocking rod. A transition arc is arranged between the convex surface and the base surface.

8. The electrolytic copper foil wastewater treatment device according to claim 1, characterized in that: Two scrapers, baffles and discharge notches are symmetrically arranged. Two synchronous transmission mechanisms and intermittent mechanisms are correspondingly arranged.

9. The electrolytic copper foil wastewater treatment device according to claim 1, wherein: A receiving groove is formed in the lower end surface of the surrounding plate, and the annular filter screen is slidably arranged in the receiving groove of the surrounding plate; a restraining ring plate is fixedly arranged on the lower end surface of the annular filter screen along the circumferential direction, the shape of the restraining ring plate converges downward, a ring body is fixedly arranged on the lower end surface of the restraining ring plate, and the ring body is slidably arranged in an arc groove formed in the upper end surface of the box body in the up-and-down direction. The internal space of the restraining ring plate is communicated with the internal space of the box body.

10. A method for treating electrolytic copper foil wastewater, comprising the electrolytic copper foil wastewater treatment device according to any one of claims 1-9, characterized in that: including, S1: Mix copper foil wastewater, lye, flocculant and coagulant aid in the mixing cabinet; S2: Drain the copper foil wastewater in the mixing cabinet into the eddy reaction cylinder through a pump; S3: The wastewater enters from the bottom end of the eddy reaction cylinder and moves upward to drive the driving blades to rotate. When the wastewater moves upward, eddies are generated under the rotation of the driving blades, so that the copper foil wastewater is fully mixed with the lye, flocculant and coagulant aid to react and generate flocs; S4: The rotating shaft drives the scraper to rotate counterclockwise through the cross bar, and the scraper collects the flocs on the upper surface of the annular filter screen to the baffle and presses the baffle to move downward; S5: The baffle drives the annular filter screen to move downward. When the scraper passes over the baffle, the baffle and the annular filter screen move upward under the push of the return spring, so that the upper end surface of the annular filter screen contacts the inner top wall of the receiving groove and vibrates, so that the blocked flocs on the annular filter screen are shaken off to prevent the annular filter screen from being blocked; S6: At the same time, the rotating shaft drives the driving wheel to rotate through the driving wheel, synchronous belt, driven wheel and vertical shaft. The driving wheel drives the ejector rod to rotate. The top end of the ejector rod always contacts the lower end surface of the cam while following the rotation of the driving wheel under the drive of the pressing spring; when the scraper just disengages from the baffle, the top end of the ejector rod is restricted by the convex surface of the cam and moves downward, so that the bottom end of the ejector rod moves downward. When the driving wheel rotates, it can drive the articulated shaft to rotate counterclockwise through the contact between the bottom end of the ejector rod and the blocking rod. The articulated shaft rotates 90 degrees and at the same time drives the blocking rod to rotate 90 degrees counterclockwise to push the flocs gathered here to the discharge notch for discharge, and the flocs fall into the sludge tank below; S7: The wastewater filtered by the annular filter screen is discharged from the box body, and then undergoes multi-stage precipitation in multiple vertical flow sedimentation tanks. The precipitated sludge is discharged to the sludge tank, and the final clear water is filtered through activated carbon and the like, and finally clear water meeting the standards is obtained; S8: The sludge in the sludge tank enters the filter press through the sludge screw pump. The liquid treated by the filter press enters the wastewater tank for circular treatment, and the filter cake is transported out.

Images