Automatic treatment device for electrolytic copper foil production polishing wastewater

Abstract

The invention relates to the technical field of wastewater treatment, in particular to an electrolytic copper foil production polishing wastewater automatic treatment device which comprises a copper scrap filtering assembly and a precipitation assembly, the copper scrap filtering assembly comprises a first supporting frame, a water tank and a circulating filtering mechanism, and the circulating filtering mechanism comprises annular filtering cloth, a rotating roller set, a filtering cloth cleaning piece and a discharging plate; the precipitation component comprises a support frame II, a precipitation tank, a lifting hopper and a stirring piece, the lifting hopper comprises an annular shell and a lifting support plate, a plurality of groups of through holes are formed in the annular shell, an arc-shaped filter plate is arranged on each group of through holes, a baffle ring and a plurality of groups of blocking blocks are formed on the inner wall of the precipitation tank, and a plurality of groups of water outlets are formed in the outer wall of the lower end of the precipitation tank. In the filtering process, the annular filter cloth rotates, then the annular filter cloth brings copper cuttings to the filter cloth cleaning piece, and the copper cuttings on the annular filter cloth are removed through the filter cloth cleaning piece, so that the annular filter cloth can be self-cleaned, and the wastewater is circularly filtered.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, in particular to an automatic treatment device for electrolytic copper foil production polishing wastewater. Background Art

[0002] Electrolytic copper foil is an important material that is pressed onto an insulating substrate to make a copper-clad laminate, and then etched to make a printed circuit board that can assemble electronic components and transmit electrical signals.

[0003] In the production process of electrolytic copper foil, the electrolytic copper foil needs to be polished. During the polishing process, the copper scraps generated will flow away with the cooling water, and finally wastewater containing copper scraps will be generated during polishing. The existing Chinese patent with publication number CN112723632B discloses a copper-containing wastewater treatment device for resource recycling to treat wastewater, but the above patent also has the following defects:

[0004] First, the wastewater contains not only water-soluble impurities but also solid copper scraps. The above patent can only remove water-soluble impurities but cannot remove solid copper scraps. Furthermore, if the solid copper scraps are not removed, the precipitation of impurities in the wastewater will be affected.

[0005] Secondly, after the impurities in the wastewater are precipitated, the precipitated impurities will settle at the bottom of the first water tank. When the impurities are discharged later, the liquid water and the impurities will be discharged from the first water tank together. After that, the impurities in the mixed water need to be filtered, which not only increases the processing steps, but also if there are too many precipitated impurities, the impurities may block the drain pipe on the first water tank, thereby making it difficult to discharge the subsequent water and impurities.

[0006] Third, the transmission for separating water and impurities usually pumps out the water in the sedimentation tank first, and then discharges the impurities. In order to prevent the impurities from being pumped out along with the water, the pumping pipe will not extend into the bottom of the sedimentation tank when pumping water, which will result in the water in the sedimentation tank being unable to be pumped out completely. Moreover, after the water in the sedimentation tank is pumped out, the impurities that lose the drive of the water flow are difficult to discharge by themselves, and the impurities in the sedimentation tank need to be removed manually, which increases the labor cost.

[0007] Therefore, it is necessary to provide an automatic treatment device for electrolytic copper foil production polishing wastewater to solve the above problems. Summary of the invention

[0008] Based on this, it is necessary to provide an automatic treatment device for polishing wastewater in electrolytic copper foil production to address the existing technical problems.

[0009] In order to solve the problems of the prior art, the technical solution adopted by the present invention is: an automatic treatment device for polishing wastewater in electrolytic copper foil production, including a copper scrap filtering component and a precipitation and precipitation component, the copper scrap filtering component includes a No. 1 support frame, a water tank and a circulating filtering mechanism, the water tank is fixed on the No. 1 support frame, and the top of the water tank is an open structure, the circulating filtering mechanism includes an annular filter cloth, a rotating roller group, a filter cloth cleaning piece and a blanking plate, the rotating roller group is arranged in a matrix on the outer wall of the water tank, the annular filter cloth is sleeved on the rotating roller group, and the annular filter cloth covers the opening at the top of the water tank, the filter cloth cleaning piece is arranged on the No. 1 support frame, the blanking plate is arranged in an inclined state below the water tank, and the annular filter cloth Passing through between the filter cloth cleaning piece and the blanking plate, the sedimentation assembly includes a No. 2 support frame, a sedimentation tank, a lifting bucket and a stirring piece. The sedimentation tank is vertically fixed on the No. 1 support frame. The lifting bucket includes an annular shell and a lifting support plate. The bottom of the sedimentation tank is an open structure. The lifting support plate drives the annular shell upward and extends into the sedimentation tank from the bottom of the sedimentation tank. The stirring piece is arranged in the sedimentation tank. Several groups of through openings are provided on the annular shell, and each group of through openings is provided with an arc filter plate. A retaining ring and several groups of blocking blocks are formed on the inner wall of the sedimentation tank. The retaining ring is used to limit the descending stroke of the annular shell. Each group of blocking blocks blocks the corresponding arc filter plate. Several groups of drainage ports are opened on the outer wall of the lower end of the sedimentation tank.

[0010] Furthermore, the rotating roller group includes four rollers, which are arranged in pairs on both sides of the water tank, each roller is horizontal, and the axial direction of each roller is parallel to the width direction of the water tank. Both ends of each roller are provided with a No. 1 shaft seat, and each No. 1 shaft seat is fixedly connected to the outer wall of the water tank. The annular filter cloth sleeve is arranged on the four rollers.

[0011] Furthermore, the filter cloth cleaning part includes a scraper and an air jet pipe. The scraper is fixed on the No. 1 support frame in an inclined state, and the scraper is located above the blanking plate. The highest end of the scraper is in contact with the annular filter cloth, and the lowest end of the scraper is facing the blanking plate. The air jet pipe includes an air intake pipe and a plurality of nozzles. The air intake pipe is horizontally fixed to the bottom of the water tank, one end of the air intake pipe is a closed structure, and the other end of the air intake pipe is an open structure. The plurality of nozzles are equidistantly distributed along the axial direction of the air intake pipe, each nozzle is connected to the air intake pipe, and each nozzle is in an inclined state.

[0012] Furthermore, an elastic upper top piece is provided at the bottom of the water tank, and the elastic upper top piece includes a top roller and two groups of elastic top seats. The top roller is parallel to the rotating roller, and the two groups of elastic top seats are symmetrically arranged at both ends of the top roller, each group of elastic top seats includes a strip fixing seat, a slider and a number of No. 1 springs. The strip fixing seat is fixedly connected to the No. 1 support frame, and a vertical strip slide groove is provided in the strip fixing seat. The slider slides in the strip slide groove, and a number of No. 1 springs are fixed in the strip slide groove, each No. 1 spring is vertical, and the two ends of each No. 1 spring respectively conflict with the slider and the inner wall of the strip fixing seat, and the two ends of the top roller are respectively rotatably connected to the two sliders.

[0013] Furthermore, two groups of symmetrical No. 1 guide plates are fixed in the water tank, each of which is in an inclined state, with the highest end of each No. 1 guide plate facing the top of the water tank, and the lowest end of each No. 1 guide plate extending downward into the water tank. An inclined No. 2 guide plate is formed between the two No. 1 guide plates, and a water guide pipe is opened on the outer wall of one side of the water tank, which is connected to the upper end of the sedimentation tank.

[0014] Furthermore, a circle of No. 1 convex ring is formed on the inner wall of the lower end of the annular shell, the lifting support plate is circular, and the peripheral wall of the lifting support plate is in contact with the inner wall of the annular shell, and the outer edge of the lifting support plate is upwardly in conflict with the No. 1 convex ring. Two symmetrical long-axis hydraulic cylinders are provided under the sedimentation tank, each of which is vertically connected to the No. 2 support frame, and the output end of each long-axis hydraulic cylinder is fixedly connected to the bottom of the lifting support plate upward.

[0015] Furthermore, a retaining ring extending vertically downward is formed at the lower end of the annular shell, and an annular tail ring is formed at the lower end of the sedimentation tank. The inner diameter of the annular tail ring is smaller than the inner diameter of the sedimentation tank. The outer diameters of the annular shell and the retaining ring are consistent with the inner diameter of the annular tail ring. Several groups of drainage ports are evenly arranged on the annular tail ring along the circumferential direction, and each group of drainage ports is formed with a downward inclined water guide groove. A circle of No. 2 convex rings is formed on the top of the annular shell, and several notches are opened on the No. 2 convex ring. The structure of the retaining ring is consistent with that of the No. 2 convex ring, and each notch is used for the insertion of a corresponding blocking block.

[0016] Furthermore, a circle of upwardly raised conical platform is formed on the top of the lifting support plate, and an annular support plate located below the sedimentation tank is provided on the No. 1 support frame, an annular aggregate trough is fixed on the annular support plate, and a downwardly inclined discharge trough is provided on the annular aggregate trough.

[0017] Furthermore, the stirring member includes a rotating shaft, a scraper paddle and a plurality of stirring paddles. The rotating shaft is vertically downward and rotatably connected to the conical table. The plurality of stirring paddles are arranged at the upper half of the rotating shaft. The plurality of stirring paddles are equidistantly distributed along the axial direction of the rotating shaft. Each stirring paddle is fixedly connected to the rotating shaft. The scraper paddle is arranged at the lower end of the rotating shaft. The scraper paddle is fixedly connected to the rotating shaft. A driving member No. 1 is provided on the top of the sedimentation tank, and a driving member No. 2 is provided at the bottom of the sedimentation tank. The structures of the driving member No. 1 and the driving member No. 2 are the same and both include a square plug and a motor. The square plug is vertical, and the motor is connected to the square plug. Square slots are provided at both ends of the rotating shaft.

[0018] Furthermore, the No. 1 driving member and the No. 2 driving member both include an elastic mounting seat, which includes a cylindrical shell, a No. 2 spring and a No. 2 shaft seat. The cylindrical shell is vertical, and one end of the cylindrical shell is an open structure, and a sealing cover plate is fixedly provided on the opening of the cylindrical shell. One end of the square plug stick slides in the cylindrical shell, and the other end of the square plug stick passes through the cylindrical shell. A stop block is formed on the end of the square plug stick extending into the cylindrical shell. The No. 2 spring is fixed in the cylindrical shell, and the two ends of the No. 2 spring respectively conflict with the sealing cover plate and the stop block. A rotating pin is formed on the sealing cover plate, and the rotating pin is connected to the No. 2 shaft seat, wherein the No. 2 shaft seat and the motor in the No. 1 driving member are both fixed on the top of the sedimentation tank, the motor in the No. 1 driving member is transmission-connected to the corresponding rotating pin, and the sealing cover plate in the No. 1 driving member faces upward, and the No. 2 shaft seat and the motor in the No. 2 driving member are both fixed on the annular support plate, the motor in the No. 2 driving member is transmission-connected to the corresponding rotating pin, and the sealing cover plate in the No. 2 driving member faces downward.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] Firstly, the device can filter the copper chips in the wastewater through the copper chip filtering assembly. During the filtering process, the annular filter cloth will rotate, and then the annular filter cloth will bring the copper chips to the filter cloth cleaning member. The filter cloth cleaning member will remove the copper chips on the annular filter cloth, so that the annular filter cloth can be self-cleaned, thereby realizing the circulation filtration of the wastewater;

[0021] Secondly, the device precipitates impurities in the wastewater through a precipitation component. When the impurities in the wastewater are precipitated, the impurities will fall downward into the lifting bucket, and then the lifting bucket will descend. When the annular shell in the lifting bucket passes through the drain port on the sedimentation tank, the water in the sedimentation tank will flow out through the arc filter plate on the annular shell, and the impurities will be blocked by the arc filter plate, thereby achieving separation of water and impurities;

[0022] Thirdly, when the water in the sedimentation tank has flowed away, the lifting plate will continue to descend, and then the annular shell will be suspended due to the obstruction of the retaining ring in the sedimentation tank, and the lifting plate will continue to descend and separate from the annular shell. When the lifting plate is separated from the annular shell, the scraper paddle in the stirring element will scrape off the impurities on the lifting plate, and finally the impurities will fall into the annular aggregate trough. In summary, the separation of the lifting plate and the annular shell makes it easier to remove impurities, thereby improving the efficiency of collecting impurities. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 is a top view of the present invention;

[0025] Figure 3 yes Figure 2Section view along line AA;

[0026] Figure 4 yes Figure 3 A1 is a partial enlarged schematic diagram;

[0027] Figure 5 yes Figure 2 Sectional view along line BB;

[0028] Figure 6 yes Figure 5 A2 is a partial enlarged schematic diagram;

[0029] Figure 7 It is a three-dimensional structural schematic diagram of the circulation filtering mechanism of the present invention;

[0030] Figure 8 yes Figure 7 A3 is a partial enlarged schematic diagram;

[0031] Fig. 9 The three-dimensional structure of the precipitation assembly of the present invention is shown in FIG. Figure 1 ;

[0032] Fig.10 The three-dimensional structure of the precipitation assembly of the present invention is shown in FIG. Figure 2 ;

[0033] Fig.11 is a top view of the precipitation assembly of the present invention;

[0034] Fig.12 yes Fig.11 Sectional view along line CC;

[0035] Fig.13 yes Fig.12 A4 is a partial enlarged schematic diagram;

[0036] Fig.14 yes Fig.12 A partial enlarged schematic diagram indicated by A5;

[0037] Fig.15 yes Fig.11 Sectional view along line DD;

[0038] Fig.16 yes Fig.15 A partial enlarged schematic diagram indicated by A6;

[0039] Fig.17 It is a three-dimensional structural schematic diagram of the lifting bucket of the present invention;

[0040] Fig.18 It is a three-dimensional structural exploded view of the lifting bucket of the present invention;

[0041] Fig.19 is a schematic diagram of the three-dimensional structure of the annular shell of the present invention;

[0042] Fig. 20 is a schematic diagram of the three-dimensional structure of the first driving member of the present invention;

[0043] Fig.21 It is a three-dimensional structural schematic diagram of the sedimentation tank of the present invention.

[0044] The numbers in the figure are: 1, copper chip filtering assembly; 2, precipitation assembly; 3, No. 1 support frame; 4, water tank; 5, annular filter cloth; 6, blanking plate; 7, No. 2 support frame; 8, sedimentation tank; 9, lifting bucket; 10, annular shell; 11, lifting support plate; 12, through-port; 13, arc filter plate; 14, retaining ring; 15, blocking block; 16, drain outlet; 17, rotating roller; 18, No. 1 shaft seat; 19, scraper; 20, air intake main pipe; 21, nozzle; 22, top roller; 23, strip fixing seat; 24, slider; 25, No. 1 spring; 26, strip slide; 27, No. 1 guide plate; 28 , guide plate No. 2; 29, water guide pipe; 30, convex ring No. 1; 31, long-axis hydraulic cylinder; 32, retaining ring; 33, annular tail ring; 34, water guide groove; 35, convex ring No. 2; 36, notch; 37, conical platform; 38, annular support plate; 39, annular collecting trough; 40, discharge trough; 41, rotating shaft; 42, scraper paddle; 43, stirring paddle; 44, driving member No. 1; 45, driving member No. 2; 46, square plug stick; 47, motor; 48, square slot; 49, columnar shell; 50, spring No. 2; 51, shaft seat No. 2; 52, sealing cover plate; 53, stopper; 54, rotating pin. DETAILED DESCRIPTION

[0045] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0046] refer to Figures 1 to 21 The device for automatically treating polishing wastewater from electrolytic copper foil production shown in the figure comprises a copper scrap filtering component 1 and a precipitation component 2. The copper scrap filtering component 1 comprises a No. 1 support frame 3, a water tank 4 and a circulating filtering mechanism. The water tank 4 is fixed on the No. 1 support frame 3, and the top of the water tank 4 is an open structure. The circulating filtering mechanism comprises an annular filter cloth 5, a rotating roller group, a filter cloth cleaning piece and a blanking plate 6. The rotating roller group is arranged in a matrix on the outer wall of the water tank 4. The annular filter cloth 5 is sleeved on the rotating roller group, and the annular filter cloth 5 covers the opening at the top of the water tank 4. The filter cloth cleaning piece is arranged on the No. 1 support frame 3. The blanking plate 6 is arranged in an inclined state below the water tank 4. The annular filter cloth 5 passes between the filter cloth cleaning piece and the blanking plate 6. The precipitation component 2 comprises a No. 2 support frame 7, a sedimentation tank 8, a lifting bucket 9 and a stirring piece. The sedimentation tank 8 (such as Fig.10As shown in FIG. 1 ) is vertically fixed on the first support frame 3, and the lifting bucket 9 includes an annular shell 10 and a lifting support plate 11 (as shown in FIG. Fig.12 As shown), the bottom of the sedimentation tank 8 is an open structure, the lifting support plate 11 drives the annular shell 10 upward from the bottom of the sedimentation tank 8 to extend into the sedimentation tank 8, the stirring member is arranged in the sedimentation tank 8, and the annular shell 10 is provided with a plurality of groups of openings 12 (as shown in FIG. Fig.19 As shown), each group of ports 12 is provided with an arc filter plate 13, and a retaining ring 14 and a plurality of blocks 15 are formed on the inner wall of the sedimentation tank 8. The retaining ring 14 is used to limit the descending stroke of the annular shell 10 (as shown). Fig.14 As shown), each group of blocking blocks 15 blocks the corresponding arc filter plate 13 (as shown Fig.16 As shown), a plurality of drainage ports 16 are provided on the outer wall of the lower end of the sedimentation tank 8 (as shown in FIG. Fig.21 shown).

[0047] The wastewater generated after the copper foil is polished contains copper chips solids and impurities dissolved in the water. The device first screens out the copper chips solids in the wastewater through the copper chips filtering component 1, and then precipitates the impurities dissolved in the water through the precipitation component 2. The specific operation process is as follows: the wastewater is poured into the water tank 4 through the opening at the top of the water tank 4. Before the wastewater enters the water tank 4, it will first pass through the annular filter cloth 5. The rotating roller group arranged on the outer wall of the water tank 4 is used to drive the annular filter cloth 5 to rotate. When the copper chips fall on the annular filter cloth 5, the copper chips in the wastewater will be blocked by the annular filter cloth 5, and the water will pass through the annular filter cloth 5 into the water tank 4. The copper chips falling on the annular filter cloth 5 will be displaced downward to the filter cloth cleaning member, and the copper chips on the annular filter cloth 5 will be removed by the filter cloth cleaning member, and the copper chips separated from the annular filter cloth 5 will directly fall onto the blanking plate 6, and finally the copper chips will be concentrated and guided to the designated collection point by the blanking plate 6. In actual use, a collection box (not shown in the figure) for collecting copper chips can be installed at the end of the blanking plate 6. The cleaned part of the annular filter cloth 5 will be rotated again to the top of the water tank 4 by rotation, so as to realize the circulation filtration of the copper chips in the wastewater, and then the wastewater in the water tank 4 is introduced into the sedimentation tank 8 for precipitation of impurities;

[0048] Before the wastewater enters the sedimentation tank 8, the lifting support plate 11 drives the annular shell 10 upward to extend into the sedimentation tank 8. During this process, the lifting support plate 11 will pass over several groups of drain ports 16. The lifting support plate 11 is pre-set with a fixed lifting stroke. When the lifting support plate 11 rises to a stop, the bottom of the sedimentation tank 8 is blocked by the lifting support plate 11, and at this time, each group of blocking blocks 15 on the inner wall of the sedimentation tank 8 blocks the corresponding arc filter plate 13. When the wastewater enters the sedimentation tank 8, the lifting support plate 11 blocks the opening at the bottom of the sedimentation tank 8, and the lifting support plate 11 is located at several groups of The wastewater is above the drain port 16, so the wastewater cannot be discharged at this time. In the processing sedimentation tank 8, a dosing port (not shown in the figure) is processed on the outer wall of the upper end of the sedimentation tank 8. When all the wastewater in the water tank 4 is introduced into the sedimentation tank 8, flocculant is added into the sedimentation tank 8 through the dosing port. After that, the stirring member arranged in the sedimentation tank 8 starts to stir the wastewater to promote the mixing of the wastewater and the flocculant. With the continuous stirring of the stirring member, the impurities in the wastewater will gradually precipitate. After that, the stirring member stops rotating and the impurities precipitated in the wastewater are statically precipitated. At this time, the heavier impurities will gradually The filter element 13 on the annular shell 10 will gradually separate from the block 15, and the filter element 13 will directly drop to the corresponding drain port 16 after separation from the block 15. When the filter element 13 corresponds to the drain port 16, the lifting support plate 11 stops descending, and the wastewater in the sedimentation tank 8 will be discharged from the drain port 16 through the filter element 13. In this process, the impurities are blocked by the filter element 13 to prevent The impurities are prevented from being discharged from the drain port 16 together with the water. When all the waste water in the sedimentation tank 8 is discharged, most of the impurities will be concentrated on the top of the lifting plate 11, and a small part of the impurities will adhere to the inner wall of the annular shell 10. After that, the lifting plate 11 will drop again. When the annular shell 10 hits the retaining ring 14 downward, the annular shell 10 stops descending. Then, as the lifting plate 11 continues to descend, the lifting plate 11 will be separated from the annular shell 10, and the lifting plate 11 will drop to the outside of the sedimentation tank 8. After that, the impurities on the lifting plate 11 and the annular shell 10 can be cleaned.

[0049] In order to show the specific structure of the rotating roller group, the following features are set:

[0050] The rotating roller group includes four rollers 17 (such as Figure 7 As shown in the figure, four rollers 17 are arranged in pairs on both sides of the water tank 4, each roller 17 is horizontal, and the axial direction of each roller 17 is parallel to the width direction of the water tank 4. Both ends of each roller 17 are provided with a No. 1 shaft seat 18, and each No. 1 shaft seat 18 is fixedly connected to the outer wall of the water tank 4. The annular filter cloth 5 is sleeved on the four rollers 17.

[0051] In actual use, a reduction motor (not shown in the figure) is provided on the side of one of the rollers 17 for driving the rotation thereof. When the reduction motor is started, the reduction motor will drive the corresponding roller 17 to rotate, so that the rotating roller 17 will drive the annular filter cloth 5 to rotate. When the annular filter cloth 5 rotates, the remaining rollers 17 will rotate together. When the annular filter cloth 5 is sleeved on the four rollers 17, the annular filter cloth 5 will also be sleeved outside the water tank 4 (such as Figure 3 As shown in the figure, when the annular filter cloth 5 rotates, the annular filter cloth 5 will pass through the top of the water tank 4, the side wall of the water tank 4 and the bottom of the water tank 4 in sequence. When the annular filter cloth 5 passes through the top of the water tank 4, the annular filter cloth 5 will intercept the copper chips in the wastewater and drive the copper chips to move together. When the annular filter cloth 5 passes through the side wall of the water tank 4 and the bottom of the water tank 4, the filter cloth cleaning part will remove the copper chips on the annular filter cloth 5. In this way, the part of the annular filter cloth 5 passing through the top of the water tank 4 will always be in a clean state, and finally the circulation filtering function will be realized.

[0052] In order to show the specific structure of the filter cloth cleaning part, the following features are set:

[0053] The filter cloth cleaning member includes a scraper 19 and an air jet pipe. The scraper 19 is fixed on the No. 1 support frame 3 in an inclined state, and the scraper 19 is located above the blanking plate 6. The highest end of the scraper 19 is in contact with the annular filter cloth 5, and the lowest end of the scraper 19 faces the blanking plate 6. The air jet pipe includes an air intake pipe 20 and a plurality of nozzles 21. The air intake pipe 20 is horizontally fixed to the bottom of the water tank 4. One end of the air intake pipe 20 is a closed structure, and the other end of the air intake pipe 20 is an open structure. The plurality of nozzles 21 are equidistantly distributed along the axial direction of the air intake pipe 20, and each nozzle 21 is connected to the air intake pipe 20, and each nozzle 21 is in an inclined state.

[0054] When the annular filter cloth 5 rotates with the copper chips thereon, the copper chips will move from the top of the water tank 4 to one side of the water tank 4. At this time, the annular filter cloth 5 changes from horizontal to vertical, and some of the copper chips on the annular filter cloth 5 will fall downward onto the scraper 19 due to gravity. Thereafter, the copper chips will fall downward onto the blanking plate 6 along the scraper 19, and some of the copper chips will adhere to the annular filter cloth 5. Then, when the annular filter cloth 5 passes through the scraper 19, the copper chips attached to the annular filter cloth 5 will be scraped off by the scraper 19. When the annular filter cloth 5 rotates from vertical to horizontal again, the annular filter cloth 5 will pass through the bottom of the water tank 4. During this process, several nozzles 21 will spray air to the annular filter cloth 5 from top to bottom, so as to further blow the copper chips attached to the annular filter cloth 5 into the blanking plate 6.

[0055] In order to prevent the annular filter cloth 5 from loosening, the following features are provided:

[0056] An elastic top member is provided below the water tank 4, and the elastic top member includes a top roller 22 and two sets of elastic top seats. The top roller 22 is parallel to the rotating roller 17, and the two sets of elastic top seats are symmetrically arranged at both ends of the top roller 22. Each set of elastic top seats includes a strip fixing seat 23, a slider 24 and a plurality of No. 1 springs 25. The strip fixing seat 23 is fixedly connected to the No. 1 support frame 3, and a vertical strip sliding groove 26 (such as Figure 8 As shown in the figure, the slider 24 slides in the strip slide groove 26, and a plurality of No. 1 springs 25 are fixed in the strip slide groove 26. Each No. 1 spring 25 is vertical, and both ends of each No. 1 spring 25 are respectively in contact with the slider 24 and the inner wall of the strip fixed seat 23, and the two ends of the top roller 22 are respectively connected to the two sliders 24 for rotation.

[0057] The slider 24 is driven to rise by the elastic force of several No. 1 springs 25. When the two sliders 24 rise, the top roller 22 will tighten the annular filter cloth 5 upward to prevent the annular filter cloth 5 from loosening, thereby ensuring that the scraper 19 can effectively scrape off the copper chips on the annular filter cloth 5.

[0058] In order to enable the water in the water tank 4 to automatically flow to the sedimentation tank 8, the following features are provided:

[0059] Two sets of symmetrical guide plates 27 (such as Figure 3 As shown in FIG. 1 , each No. 1 guide plate 27 is in an inclined state, the highest end of each No. 1 guide plate 27 faces the top of the water tank 4, and the lowest end of each No. 1 guide plate 27 extends downward into the water tank 4. A No. 2 guide plate 28 in an inclined state is formed between the two No. 1 guide plates 27, and a water guide pipe 29 (as shown in FIG. 1 ) is provided on the outer wall of one side of the water tank 4. Figure 5 As shown), the water pipe 29 is connected to the upper end of the sedimentation tank 8.

[0060] When the wastewater is poured into the water tank 4, the wastewater will be discharged to the No. 2 guide plate 28 through the two No. 1 guide plates 27 in the water tank 4. Thereafter, the wastewater will be discharged to the water guide pipe 29 through the No. 2 guide plate 28, and finally the wastewater will be introduced into the sedimentation tank 8 through the water guide pipe 29.

[0061] In order to show how the lifting support plate 11 drives the annular shell 10 to rise, the following features are set:

[0062] A first convex ring 30 (such as Fig.14As shown in the figure, the lifting support plate 11 is circular, and the peripheral wall of the lifting support plate 11 is in contact with the inner wall of the annular shell 10, and the outer edge of the lifting support plate 11 is upwardly in conflict with the No. 1 convex ring 30, and two symmetrical long-axis hydraulic cylinders 31 are provided below the sedimentation tank 8, each of which is vertically connected to the No. 2 support frame 7, and the output end of each long-axis hydraulic cylinder 31 is fixedly connected to the bottom of the lifting support plate 11 upward.

[0063] The two long-axis hydraulic cylinders 31 are used to drive the lifting plate 11 to rise and fall. When the lifting plate 11 rises, the lifting plate 11 will extend upward into the annular shell 10. At this time, the outer edge of the lifting plate 11 will upwardly contact the No. 1 convex ring 30, and finally the annular shell 10 will rise together with the lifting plate 11.

[0064] In order to prevent the wastewater in the settling tank 8 from being discharged from the bottom of the settling tank 8, the following features are provided:

[0065] The lower end of the annular shell 10 is formed with a retaining ring 32 extending vertically downward, and the lower end of the sedimentation tank 8 is formed with an annular tail ring 33. The inner diameter of the annular tail ring 33 is smaller than the inner diameter of the sedimentation tank 8. The outer diameters of the annular shell 10 and the retaining ring 32 are consistent with the inner diameter of the annular tail ring 33. Several groups of drainage ports 16 are evenly arranged on the annular tail ring 33 along the circumferential direction. Each group of drainage ports 16 is formed with a downwardly inclined water guide groove 34. The top of the annular shell 10 is formed with a circle of No. 2 convex rings 35 (such as Fig.17 As shown in FIG. 1 , a plurality of notches 36 are formed on the second convex ring 35 , and the structure of the retaining ring 14 is consistent with that of the second convex ring 35 , and each notch 36 is used for inserting a corresponding blocking block 15 .

[0066] When the lifting support plate 11 descends, the annular shell 10 will descend along with the lifting support plate 11 due to gravity. When the lifting support plate 11 descends to the drain port 16, the retaining ring 32 at the lower end of the annular shell 10 will first block the drain port 16. Therefore, when the arc filter plate 13 on the annular shell 10 leaks out through the drain port 16, the wastewater in the sedimentation tank 8 will not be discharged downward through the annular tail ring 33 due to the action of the retaining ring 32. At this time, the wastewater will be directly discharged through the drain port 16. When the wastewater is discharged, the wastewater is centrally guided by the water guide groove 34 to prevent the wastewater from scattering.

[0067] When the annular shell 10 slides up and down in the sedimentation tank 8, the outer ring of the No. 2 convex ring 35 will fit with the inner wall of the sedimentation tank 8. When the annular shell 10 rises, the block 15 on the inner wall of the sedimentation tank 8 will pass through the No. 2 convex ring 35 through the notch 36 on the No. 2 convex ring 35. When the annular shell 10 stops rising, the block 15 will block the arc filter plate 13 on the annular shell 10. When the annular shell 10 descends, the No. 2 convex ring 35 will gradually approach the retaining ring 14 downward. When the No. 2 convex ring 35 conflicts with the retaining ring 14 downward, the annular shell 10 will be blocked by the retaining ring 32 and stop descending. After that, the lifting support plate 11 will continue to descend, and finally the lifting support plate 11 and the annular shell 10 will be separated.

[0068] In order to facilitate the cleaning of impurities on the lifting support plate 11, the following features are set:

[0069] The top of the lifting support plate 11 is formed with a circle of upwardly raised conical platform 37, and the first support frame 3 is provided with an annular support plate 38 located below the sedimentation tank 8, and an annular collection trough 39 is fixedly provided on the annular support plate 38, and a downwardly inclined discharge trough 40 (such as Fig. 9 shown).

[0070] When the impurities in the sedimentation tank 8 are precipitated, the impurities will fall downward onto the conical platform 37 on the lifting support plate 11. Then, when the lifting support plate 11 is separated from the annular shell 10, the impurities on the conical platform 37 can be pushed downward into the annular aggregate trough 39. The conical platform 37 makes it easier for the impurities to be pushed downward into the annular aggregate trough 39.

[0071] In order to show the specific structure of the stirring element, the following features are set:

[0072] The stirring member includes a rotating shaft 41, a scraping paddle 42 and a plurality of stirring paddles 43. The rotating shaft 41 is vertically downward and rotatably connected to the conical platform 37. The plurality of stirring paddles 43 are arranged at the upper half of the rotating shaft 41. The plurality of stirring paddles 43 are equidistantly distributed along the axial direction of the rotating shaft 41. Each stirring paddle 43 is fixedly connected to the rotating shaft 41. The scraping paddle 42 is arranged at the lower end of the rotating shaft 41. The scraping paddle 42 is fixedly connected to the rotating shaft 41. A No. 1 driving member 44 is provided at the top of the sedimentation tank 8, and a No. 2 driving member 45 is provided below the sedimentation tank 8. The No. 1 driving member 44 and the No. 2 driving member 45 have the same structure and both include a square plug 46 and a motor 47. The square plug 46 is vertical, and the motor 47 is connected to the square plug 46. Both ends of the rotating shaft 41 are provided with square slots 48 (such as Fig.13 shown).

[0073] When the lifting support plate 11 drives the annular shell 10 to rise, the rotating shaft 41 connected to the conical platform 37 will move upwards close to the first driving member 44, and then the square plug 46 in the first driving member 44 will be inserted downwards into the square slot 48 at the top of the rotating shaft 41. Then, when the motor 47 is started, the square plug 46 will drive the rotating shaft 41 to rotate. At this time, the wastewater and flocculant in the sedimentation tank 8 are fully mixed through a plurality of stirring paddles 43. When the lifting support plate 11 is lowered, the rotating shaft 41 will be connected to the square plug 46 on the first driving member 44. After separation, the rotating shaft 41 will gradually move downward toward the square plug 46 on the No. 2 driving member 45. Finally, when the lifting support plate 11 is separated from the annular shell 10, the square plug 46 in the No. 2 driving member 45 will be inserted upward into the square slot 48 at the lower end of the rotating shaft 41. Then, when the motor 47 in the No. 2 driving member 45 is started, the square plug 46 will drive the rotating shaft 41 to rotate. At this time, the scraper paddle 42 will scrape off the impurities that fall onto the conical table 37. The scraped impurities will fall downward along the conical table 37 into the annular collecting trough 39.

[0074] In order to show the specific structure of the first driving member 44 and the second driving member 45, the following features are set:

[0075] The first driving member 44 and the second driving member 45 both include an elastic mounting seat, which includes a columnar shell 49, a second spring 50 and a second shaft seat 51. The columnar shell 49 is vertical, and one end of the columnar shell 49 is an open structure, and a sealing cover plate 52 is fixedly provided on the opening of the columnar shell 49. One end of the square plug 46 slides in the columnar shell 49, and the other end of the square plug 46 passes through the columnar shell 49. A stopper 53 (such as Fig.13 As shown in the figure, the No. 2 spring 50 is fixed in the cylindrical shell 49, and the two ends of the No. 2 spring 50 are respectively in conflict with the sealing cover plate 52 and the stopper 53. A rotating pin 54 is formed on the sealing cover plate 52, and the rotating pin 54 is connected to the No. 2 shaft seat 51, wherein the No. 2 shaft seat 51 and the motor 47 in the No. 1 driving member 44 are both fixed to the top of the sedimentation tank 8, the motor 47 in the No. 1 driving member 44 is transmission-connected with the corresponding rotating pin 54, and the sealing cover plate 52 in the No. 1 driving member 44 faces upward, and the No. 2 shaft seat 51 and the motor 47 in the No. 2 driving member 45 are both fixed on the annular support plate 38, the motor 47 in the No. 2 driving member 45 is transmission-connected with the corresponding rotating pin 54, and the sealing cover plate 52 in the No. 2 driving member 45 faces downward.

[0076] Taking the No. 1 driving member 44 as an example, when the motor 47 is started, the motor 47 will drive the rotating pin 54 to rotate, so that the entire cylindrical shell 49 will drive the square plug 46 therein to rotate. When the rotating shaft 41 moves upward and approaches the No. 1 driving member 44, the rotating square plug 46 will be inserted downward into the square slot 48 at the upper end of the rotating shaft 41. In this process, since the square slot 48 in the rotating shaft 41 may not correspond to the square plug 46, when the rotating shaft 41 rises, the upper end of the rotating shaft 41 will push up the square plug 46, and at this time the square plug 46 will move upward. The No. 2 spring 50 is compressed so that the No. 2 spring 50 generates elastic force. When the square plug 46 corresponds to the square slot 48, the square plug 46 will be inserted downward into the corresponding square slot 48 through the elastic force of the No. 2 spring 50. Similarly, since the structures of the No. 1 driving member 44 and the No. 2 driving member 45 are the same, the working process of the No. 2 driving member 45 is similar to that of the No. 1 driving member 44. When the rotating shaft 41 descends, the rotating shaft 41 will press down the square plug 46 in the No. 2 driving member 45 until the square plug 46 corresponds to the square slot 48 at the lower end of the rotating shaft 41.

[0077] Working principle:

[0078] The wastewater generated after the copper foil is polished contains copper chips solids and impurities dissolved in the water. The device first screens out the copper chips solids in the wastewater through the copper chips filtering component 1, and then precipitates the impurities dissolved in the water through the precipitation component 2. The specific operation process is as follows: the wastewater is poured into the water tank 4 through the opening at the top of the water tank 4. Before the wastewater enters the water tank 4, it will first pass through the annular filter cloth 5. The rotating roller group arranged on the outer wall of the water tank 4 is used to drive the annular filter cloth 5 to rotate. When the copper chips fall on the annular filter cloth 5, the copper chips in the wastewater will be blocked by the annular filter cloth 5, and the water will pass through the annular filter cloth 5 into the water tank 4. The copper chips falling on the annular filter cloth 5 will be displaced downward to the filter cloth cleaning member, and the copper chips on the annular filter cloth 5 will be removed by the filter cloth cleaning member, and the copper chips separated from the annular filter cloth 5 will directly fall onto the blanking plate 6, and finally the copper chips will be concentrated and guided to the designated collection point by the blanking plate 6. In actual use, a collection box (not shown in the figure) for collecting copper chips can be installed at the end of the blanking plate 6. The cleaned part of the annular filter cloth 5 will be rotated again to the top of the water tank 4 by rotation, so as to realize the circulation filtration of the copper chips in the wastewater, and then the wastewater in the water tank 4 is introduced into the sedimentation tank 8 for precipitation of impurities;

[0079] Before the wastewater enters the sedimentation tank 8, the lifting support plate 11 drives the annular shell 10 upward to extend into the sedimentation tank 8. During this process, the lifting support plate 11 will pass over several groups of drain ports 16. The lifting support plate 11 is pre-set with a fixed lifting stroke. When the lifting support plate 11 rises to a stop, the bottom of the sedimentation tank 8 is blocked by the lifting support plate 11, and at this time, each group of blocking blocks 15 on the inner wall of the sedimentation tank 8 blocks the corresponding arc filter plate 13. When the wastewater enters the sedimentation tank 8, the lifting support plate 11 blocks the opening at the bottom of the sedimentation tank 8, and the lifting support plate 11 is located at several groups of The wastewater is above the drain port 16, so the wastewater cannot be discharged at this time. In the processing sedimentation tank 8, a dosing port (not shown in the figure) is processed on the outer wall of the upper end of the sedimentation tank 8. When all the wastewater in the water tank 4 is introduced into the sedimentation tank 8, flocculant is added into the sedimentation tank 8 through the dosing port. After that, the stirring member arranged in the sedimentation tank 8 starts to stir the wastewater to promote the mixing of the wastewater and the flocculant. With the continuous stirring of the stirring member, the impurities in the wastewater will gradually precipitate. After that, the stirring member stops rotating and the impurities precipitated in the wastewater are statically precipitated. At this time, the heavier impurities will gradually The filter element 13 on the annular shell 10 will gradually separate from the block 15, and the filter element 13 will directly drop to the corresponding drain port 16 after separation from the block 15. When the filter element 13 corresponds to the drain port 16, the lifting support plate 11 stops descending, and the wastewater in the sedimentation tank 8 will be discharged from the drain port 16 through the filter element 13. In this process, the impurities are blocked by the filter element 13 to prevent The impurities are prevented from being discharged from the drain port 16 together with the water. When all the waste water in the sedimentation tank 8 is discharged, most of the impurities will be concentrated on the top of the lifting plate 11, and a small part of the impurities will adhere to the inner wall of the annular shell 10. After that, the lifting plate 11 will drop again. When the annular shell 10 hits the retaining ring 14 downward, the annular shell 10 stops descending. Then, as the lifting plate 11 continues to descend, the lifting plate 11 will be separated from the annular shell 10, and the lifting plate 11 will drop to the outside of the sedimentation tank 8. After that, the impurities on the lifting plate 11 and the annular shell 10 can be cleaned.

[0080] The above embodiments only express one or several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the attached claims.

Claims

1. An automatic treatment device for electrolytic copper foil production polishing wastewater, characterized in that: The invention comprises a copper chip filtering component (1) and a precipitation and settling component (2). The copper chip filtering component (1) comprises a first support frame (3), a water tank (4) and a circulation filtering mechanism. The water tank (4) is fixed on the first support frame (3), and the top of the water tank (4) is an open structure. The circulation filtering mechanism comprises an annular filter cloth (5), a rotating roller group, a filter cloth cleaning member and a blanking plate (6). The rotating roller group is arranged on the outer wall of the water tank (4) in a matrix. The annular filter cloth (5) is sleeved on the rotating roller group, and the annular filter cloth (5) covers the opening at the top of the water tank (4). The filter cloth cleaning member is arranged on the first support frame (3). The blanking plate (6) is arranged below the water tank (4) in an inclined state. The annular filter cloth (5) passes between the filter cloth cleaning member and the blanking plate (6). The precipitation and settling component (2) comprises a second support frame (7), a precipitation tank (8), The invention relates to a settling tank (8) provided with a lifting bucket (9) and a stirring member. The settling tank (8) is vertically fixed on a first support frame (3). The lifting bucket (9) comprises an annular shell (10) and an lifting support plate (11). The bottom of the settling tank (8) is an open structure. The lifting support plate (11) drives the annular shell (10) upward to extend from the bottom of the settling tank (8) into the settling tank (8). The stirring member is arranged in the settling tank (8). The annular shell (10) is provided with a plurality of groups of through openings (12). Each group of through openings (12) is provided with an arc filter plate (13). A retaining ring (14) and a plurality of groups of blocking blocks (15) are formed on the inner wall of the settling tank (8). The retaining ring (14) is used to limit the descending stroke of the annular shell (10). Each group of blocking blocks (15) blocks the corresponding arc filter plate (13). A plurality of groups of drainage ports (16) are opened on the outer wall of the lower end of the settling tank (8).

2. The automatic treatment device for electrolytic copper foil production polishing wastewater according to claim 1 is characterized in that: The rotating roller group comprises four rollers (17), the four rollers (17) are arranged in pairs on both sides of the water tank (4), each roller (17) is horizontal, the axial direction of each roller (17) is parallel to the width direction of the water tank (4), each roller (17) is provided with a first shaft seat (18) at both ends, each first shaft seat (18) is fixedly connected to the outer wall of the water tank (4), and the annular filter cloth (5) is sleeved on the four rollers (17).

3. The automatic treatment device for electrolytic copper foil production polishing wastewater according to claim 1 is characterized in that: The filter cloth cleaning member comprises a scraper (19) and an air jet pipe. The scraper (19) is fixed on a first support frame (3) in an inclined state, and the scraper (19) is located above a blanking plate (6). The highest end of the scraper (19) is in contact with the annular filter cloth (5), and the lowest end of the scraper (19) faces the blanking plate (6). The air jet pipe comprises an air intake pipe (20) and a plurality of nozzles (21). The air intake pipe (20) is fixed horizontally to the bottom of a water tank (4). One end of the air intake pipe (20) is a closed structure, and the other end of the air intake pipe (20) is an open structure. The plurality of nozzles (21) are equidistantly distributed along the axial direction of the air intake pipe (20), and each nozzle (21) is connected to the air intake pipe (20), and each nozzle (21) is in an inclined state.

4. The automatic treatment device for electrolytic copper foil production polishing wastewater according to claim 2 is characterized in that: An elastic top member is provided below the water tank (4), the elastic top member comprises a top roller (22) and two groups of elastic top seats, the top roller (22) is parallel to the rotating roller (17), the two groups of elastic top seats are symmetrically arranged at the two ends of the top roller (22), each group of elastic top seats comprises a strip-shaped fixed seat (23), a slider (24) and a plurality of No. 1 springs (25), the strip-shaped fixed seat (23) is fixedly connected to the No. 1 support frame (3), the strip-shaped fixed seat (23) is fixedly connected to the No. 1 support frame (3), and the strip-shaped fixed seat (23) is fixedly connected to the No. 1 support frame (3). A vertical strip slide groove (26) is provided in the strip slide groove (23), a slider (24) slides in the strip slide groove (26), a plurality of No. 1 springs (25) are fixed in the strip slide groove (26), each No. 1 spring (25) is vertical, and both ends of each No. 1 spring (25) are respectively in contact with the slider (24) and the inner wall of the strip fixed seat (23), and both ends of the top roller (22) are respectively connected to the two sliders (24) for rotation.

5. The automatic treatment device for electrolytic copper foil production polishing wastewater according to claim 1 is characterized in that: Two groups of No. 1 guide plates (27) in a symmetrical state are fixedly arranged in the water tank (4), each No. 1 guide plate (27) is in an inclined state, the highest end of each No. 1 guide plate (27) faces the top of the water tank (4), and the lowest end of each No. 1 guide plate (27) extends downward into the water tank (4), and a No. 2 guide plate (28) in an inclined state is formed between the two No. 1 guide plates (27). A water guide pipe (29) is opened on the outer wall of one side of the water tank (4), and the water guide pipe (29) is connected to the upper end of the sedimentation tank (8).

6. The automatic treatment device for electrolytic copper foil production polishing wastewater according to claim 1 is characterized in that: A first convex ring (30) is formed on the inner wall of the lower end of the annular shell (10), the lifting support plate (11) is circular, and the peripheral wall of the lifting support plate (11) is in contact with the inner wall of the annular shell (10), and the outer edge of the lifting support plate (11) is upwardly in conflict with the first convex ring (30), and two symmetrical long-axis hydraulic cylinders (31) are provided below the sedimentation tank (8), each long-axis hydraulic cylinder (31) is vertically connected to the second support frame (7), and the output end of each long-axis hydraulic cylinder (31) is upwardly fixedly connected to the bottom of the lifting support plate (11).

7. The automatic treatment device for electrolytic copper foil production polishing wastewater according to claim 1 is characterized in that: A retaining ring (32) extending vertically downward is formed at the lower end of the annular shell (10), and an annular tail ring (33) is formed at the lower end of the sedimentation tank (8). The inner diameter of the annular tail ring (33) is smaller than the inner diameter of the sedimentation tank (8). The outer diameters of the annular shell (10) and the retaining ring (32) are consistent with the inner diameter of the annular tail ring (33). A plurality of groups of drainage ports (16) are evenly arranged on the annular tail ring (33) along the circumferential direction. Each group of drainage ports (16) is formed with a downwardly inclined water guide groove (34). A circle of No. 2 convex rings (35) is formed at the top of the annular shell (10). The No. 2 convex ring (35) is provided with a plurality of notches (36). The structure of the retaining ring (14) is consistent with that of the No. 2 convex ring (35). Each notch (36) is used for inserting a corresponding blocking block (15).

8. The automatic treatment device for electrolytic copper foil production polishing wastewater according to claim 1 is characterized in that: A circle of upwardly raised conical platform (37) is formed on the top of the lifting support plate (11), and an annular support plate (38) located below the sedimentation tank (8) is provided on the first support frame (3), an annular aggregate trough (39) is fixedly provided on the annular support plate (38), and a downwardly inclined discharge trough (40) is provided on the annular aggregate trough (39).

9. The automatic treatment device for electrolytic copper foil production polishing wastewater according to claim 8, characterized in that: The stirring member comprises a rotating shaft (41), a scraping paddle (42) and a plurality of stirring paddles (43). The rotating shaft (41) is vertically downwardly connected to the conical platform (37) for rotation. The plurality of stirring paddles (43) are arranged at the upper half of the rotating shaft (41). The plurality of stirring paddles (43) are evenly distributed along the axial direction of the rotating shaft (41). Each stirring paddle (43) is fixedly connected to the rotating shaft (41). The scraping paddle (42) is arranged at the lower end of the rotating shaft (41). ) is fixedly connected to the rotating shaft (41), a No. 1 driving member (44) is provided on the top of the sedimentation tank (8), a No. 2 driving member (45) is provided below the sedimentation tank (8), the No. 1 driving member (44) and the No. 2 driving member (45) have the same structure and both include a square plug (46) and a motor (47), the square plug (46) is vertical, the motor (47) is connected to the square plug (46), and square slots (48) are provided at both ends of the rotating shaft (41).

10. The automatic treatment device for electrolytic copper foil production polishing wastewater according to claim 9, characterized in that: The first driving member (44) and the second driving member (45) both further include an elastic mounting seat, which includes a columnar shell (49), a second spring (50) and a second shaft seat (51). The columnar shell (49) is vertical, one end of the columnar shell (49) is an open structure, and a sealing cover plate (52) is fixedly provided on the opening of the columnar shell (49). One end of the square plug (46) slides in the columnar shell (49), and the other end of the square plug (46) passes through the columnar shell (49). A stopper (53) is formed on one end of the square plug (46) extending into the columnar shell (49). The second spring (50) is fixedly provided in the columnar shell (49), and the two ends of the second spring (50) are respectively connected to the sealing cover plate (52) and the stopper (53). 53) is in conflict with each other, a rotating pin (54) is formed on the sealing cover plate (52), and the rotating pin (54) is connected to the second shaft seat (51), wherein the second shaft seat (51) and the motor (47) in the first driving member (44) are both fixed to the top of the sedimentation tank (8), the motor (47) in the first driving member (44) is transmission-connected with the corresponding rotating pin (54), and the sealing cover plate (52) in the first driving member (44) faces upward, and the second shaft seat (51) and the motor (47) in the second driving member (45) are both fixed on the annular support plate (38), the motor (47) in the second driving member (45) is transmission-connected with the corresponding rotating pin (54), and the sealing cover plate (52) in the second driving member (45) faces downward.

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