A wastewater electrocatalytic oxidation reactor

Abstract

The invention relates to the technical field of wastewater treatment, and in particular to a wastewater electrocatalytic oxidation reactor, comprising an electrolytic cell, a partition plate fixedly installed in the electrolytic cell, a plurality of electrode units evenly spaced in front and back in the electrolytic cell located on the left side of the partition plate, the electrode units comprising an electrode plate and two aeration pipes relatively arranged on the front and back sides of the electrode plate, a torsion spring connected between the aeration pipe and an aeration box, a plurality of air outlets evenly spaced in the top of the aeration pipe along the length direction, a guide block fixedly installed at the right end of the aeration pipe, a slot plate fixedly installed on the left side of the partition plate, a guide groove corresponding to the plurality of guide blocks being arranged on the left side of the slot plate; the plurality of aeration pipes are driven to move up and down by a first driving component, and when the aeration pipe drives the guide block at the right end thereof upward to enter the corresponding guide groove, the guide groove and the guide block cooperate to rotate the aeration pipe and align the air outlet with the electrode plate, so that the side aeration of the electrode plate is flushed in the process of the aeration pipe moving up and down.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, and in particular to a wastewater electrocatalytic oxidation reactor. Background Art

[0002] Electrocatalytic oxidation technology degrades organic pollutants in wastewater by producing highly oxidizing active groups such as hydroxyl radicals. It has the characteristics of no secondary pollution, low cost, strong applicability and high efficiency. It has application potential in treating high-concentration and difficult-to-biodegrade wastewater.

[0003] The invention patent with application number CN202010609995.7 discloses an electrocatalytic oxidation device, including a cell body, a cathode electrode and an anode electrode are arranged in the cell body, an air outlet is opened at the top of the side of the cell body, a push plate is arranged at one end of the cell body away from the air outlet, a bottom plate is vertically slidably connected on the push plate, the upper surface of the bottom plate is a sliding slope inclined downward from the side close to the push plate, and a guide block is fixed on the inner side of the cell body close to the air outlet, and the guide block has a guide slope extending downward from the bottom of the air outlet. The scum is gathered by the movement of the push plate, and the scum is pushed toward the air outlet. When the bottom plate abuts the guide slope and continues to move toward the air outlet with the push plate, the bottom plate moves up, and finally the bottom plate moves up to the upper surface of the bottom plate higher than the lower end of the air outlet. The scum accumulates on the bottom plate and slides down to the air outlet due to the suction of the exhaust fan and its own gravity, which can quickly remove the scum generated during the electrolysis process.

[0004] However, the above-mentioned electrocatalytic oxidation device cannot clean the electrode plates in time during the reaction process. After long-term use, dirt adheres to the surface of the electrode plates, resulting in a gradual decrease in the efficiency of wastewater treatment. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a wastewater electrocatalytic oxidation reactor, which is convenient for cleaning the electrode plates to solve the problems in the prior art.

[0006] In order to solve the above technical problems, the technical solution of the present invention is: a wastewater electrocatalytic oxidation reactor, comprising an electrolytic cell, a partition plate is fixedly installed in the electrolytic cell, and a scum collection chamber is provided in the electrolytic cell on the right side of the partition plate; a plurality of electrode units are evenly spaced front and back in the electrolytic cell located on the left side of the partition plate, the electrode unit comprises an electrode plate and two aeration tubes relatively arranged on the front and rear sides of the electrode plate, the aeration tubes extend left and right, and the electrode plate is fixedly installed on the bottom wall of the electrolytic cell; the right end of the aeration tube is closed, the left ends of the plurality of aeration tubes are rotatably installed on the same aeration box and the left ends of the aeration tubes are connected to the inner cavity of the aeration box, a torsion spring is connected between the aeration tube and the aeration box, and a plurality of air outlets are evenly spaced on the top of the aeration tube along the length direction hole, an air inlet pipe is also provided on the aeration box, and the air inlet pipe is connected to an air inlet hose; a guide block is fixedly installed on the right end of the aeration pipe, and the guide block includes a circular guide part coaxially fixedly installed on the outer side of the right end of the aeration pipe, and a shift block is provided on the guide part, which protrudes toward the side close to the corresponding electrode plate, and the upper side surface of the shift block is horizontally arranged and tangent to the top of the guide part; a slot plate is fixedly installed on the left side of the partition plate, and a guide groove corresponding to a plurality of guide blocks is provided on the left side of the slot plate, and the guide groove extends vertically, and the lower end of the guide groove is open, and the width of the guide groove is consistent with the diameter of the guide part, and a first driving assembly for driving the plurality of aeration pipes to move up and down is provided in the electrolytic cell; a scraping mechanism for sending scum into the scum collecting chamber is provided in the electrolytic cell.

[0007] As a further improvement, the plurality of aeration tubes are rotatably mounted on the same support plate.

[0008] As a preferred technical solution, the first drive assembly includes a first screw rod threadedly connected to the front and rear ends of the aeration box and the front and rear ends of the support plate, respectively. The first screw rod extends vertically, and auxiliary plates are fixedly installed on the inner sides of the front and rear side walls of the electrolytic cell, respectively. The two ends of the first screw rod are rotatably connected to the auxiliary plates and the bottom wall of the electrolytic cell, respectively, and a first motor for driving the first screw rod to rotate is fixedly installed on the bottom of the electrolytic cell.

[0009] As a preferred technical solution, the partition plate is provided with a vertical portion, an inclined portion and a horizontal portion which are connected in sequence, the lower end of the vertical portion is fixedly connected to the bottom wall of the electrolytic cell, the upper end of the vertical portion is connected to the lower end of the inclined portion, the high end of the inclined portion is inclined to the right and connected to the left end of the horizontal portion, the right end of the horizontal portion is connected to the right side wall of the electrolytic cell, the scum collection chamber is located between the front and rear side walls, the right side wall, the bottom wall and the partition plate of the electrolytic cell, the horizontal portion is provided with a sewage inlet connected to the scum collection chamber, and a sewage discharge pipe connected to the scum collection chamber is fixedly installed at the bottom of the electrolytic cell.

[0010] As a preferred technical solution, the scraping mechanism includes a mounting plate that is movably installed left and right in the mouth of the electrolytic cell, a vertically extending scraper is slidably installed up and down on the right side of the mounting plate, a plurality of water-permeable holes are provided on the scraper, a dovetail block is fixedly installed on the left side of the scraper, a dovetail groove matching the dovetail block is provided on the right side of the mounting plate, the upper end of the dovetail groove is open, a first spring for pushing the scraper to move downward is provided on the mounting plate, when the dovetail block moves to the lower end of the dovetail groove, the lower end of the scraper extends below the liquid level of the electrolytic cell, and the projection of the lower end of the scraper in the horizontal direction is located on the inclined portion, and a second drive component for driving the mounting plate to move left and right is provided in the electrolytic cell.

[0011] As a further improvement, a support is fixedly installed on the lower left end of the scraper, a sliding rod extending upward is fixedly installed on the support, a sliding hole matching the sliding rod is provided at the bottom of the mounting plate, and the first spring is supported between the upper end of the sliding rod and the top wall of the sliding hole.

[0012] As a further improvement, a mounting groove is provided on the right side of the mounting plate, a swing rod is provided in the mounting groove, hinge shafts extending forward and backward are respectively provided in the middle of the front and rear sides of the swing rod, the swing rod is rotatably mounted in the mounting groove through the hinge shaft, a clamping block is provided on the right side of the swing rod above the hinge shaft, a guide inclined surface is provided on the right bottom of the clamping block, a limiting plate matching the swing rod is fixedly mounted on the top wall of the mounting groove, and when the upper end of the swing rod is attached to the left side of the limiting plate, the right end of the clamping block extends out of the mounting groove The projection of the scraper in the vertical direction is located on the guide inclined plane, and a second spring is connected between the swing arm and the inner wall of the mounting groove, which is used to make the upper end of the swing arm fit into the left side of the limit plate; a slot matching the block is provided on the scraper, and when the lower end of the scraper is against the top of the horizontal part, the slot is aligned with the block; a mounting block is fixedly installed on the inner side of the left side wall of the electrolytic cell, and a push rod is provided on the mounting block for pushing the lower end of the swing arm to rotate right, and a through hole is provided on the mounting plate for the push rod to pass through.

[0013] As a preferred technical solution, the second drive assembly includes a second screw rod threadedly connected to the front and rear ends of the mounting plate, the second screw rod extends left and right, and the two ends of the second screw rod are respectively rotatably connected to the left and right side walls of the electrolytic cell, and a second motor for driving the second screw rod to rotate is fixedly installed on the electrolytic cell.

[0014] Beneficial effects:

[0015] Due to the adoption of the above technical scheme, a wastewater electrocatalytic oxidation reactor comprises an electrolytic cell, a partition plate is fixedly installed in the electrolytic cell, a plurality of electrode units are evenly spaced in front and back in the electrolytic cell on the left side of the partition plate, the electrode unit comprises an electrode plate and two aeration tubes relatively arranged on the front and back sides of the electrode plate, a torsion spring is connected between the aeration tube and the aeration box, a plurality of air outlet holes are evenly spaced in the top of the aeration tube along the length direction, a guide block is fixedly installed at the right end of the aeration tube, a slot plate is fixedly installed on the left side of the partition plate, and a guide slot corresponding to the plurality of guide blocks is arranged on the left side of the slot plate;

[0016] The present application drives multiple aeration tubes to move up and down through the first driving assembly. When the aeration tube drives the guide block at the right end thereof to move upward into the corresponding guide groove, the guide groove and the guide block cooperate to rotate the aeration tube and align the air outlet with the electrode plate, thereby flushing the side aeration of the electrode plate during the up and down movement of the aeration tube, making it more convenient to clean the electrode plate and improving the efficiency of wastewater treatment.

[0017] The present application drives the mounting plate to move left and right through the second driving component. When the mounting plate moves to the right, the lower end of the scraper extends below the liquid level of the electrolytic cell and drives the flocs on the upper layer of the liquid surface into the sewage inlet. When the mounting plate moves to the left, the block hooks the scraper to prevent the lower end of the scraper from extending below the liquid level of the electrolytic cell, thereby preventing the newly generated flocs from accumulating on the left side of the scraper when the mounting plate moves to the left, and the scum cleaning effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0020] Figure 2 yes Figure 1 Middle AA section view;

[0021] Figure 3 yes Figure 2 The schematic cross-sectional view of part I;

[0022] Figure 4 yes Figure 2 Middle BB cutaway diagram;

[0023] Figure 5 yes Figure 4 A partial enlarged view of part II;

[0024] Figure 6 is a schematic structural diagram of a guide block according to an embodiment of the present invention;

[0025] Figure 7 is a schematic diagram of a guide block according to an embodiment of the present invention entering a guide groove;

[0026] Figure 8 yes Figure 1 Schematic diagram of top view;

[0027] Fig. 9 is a schematic top view of a mounting plate according to an embodiment of the present invention;

[0028] Fig.10 yes Fig. 9 Middle CC cutaway diagram;

[0029] Fig.11 yes Fig. 9 Middle DD cutaway diagram;

[0030] Fig.12 is a schematic diagram of a card block in an embodiment of the present invention extending into a card slot;

[0031] Fig.13 It is a schematic diagram of a card block disengaged from a card slot according to an embodiment of the present invention.

[0032] In the figure: 1-electrolyzer; 2-water inlet pipe; 3-drain pipe; 4-partition plate; 5-scum collecting chamber; 6-electrode unit; 7-electrode plate; 8-aeration pipe; 9-aeration box; 10-torsion spring; 11-air outlet; 12-air inlet pipe; 13-air inlet hose; 14-connecting block; 15-guide block; 16-guide part; 17-shift block; 18-slot plate; 19-guide slot; 20-mounting block; 21-support plate; 22-first screw rod; 23-auxiliary plate; 24-first motor; 25-vertical part; 26-inclined part; 27-horizontal part; 28-sewage inlet; 29-sewage pipe; 30-mounting plate; 31-first spring; 32-support; 33-slide rod; 34-slide hole; 35-mounting groove; 36-swing rod; 37-hinge shaft; 38-block; 39-guide slope; 40-limiting plate; 41-second spring; 42-slot; 43-push rod; 44-second screw rod; 45-second motor; 46-scraper; 47-dovetail block; 48-dovetail groove. DETAILED DESCRIPTION

[0033] like Figures 1 to 13 As shown, a wastewater electrocatalytic oxidation reactor comprises an electrolytic cell 1, wherein four corners of the bottom of the electrolytic cell 1 are provided with supporting legs, a water inlet pipe 2 is provided on the left side of the top of the electrolytic cell 1, and a drainage pipe 3 is provided on the left side of the bottom of the electrolytic cell 1, and valves are provided on the water inlet pipe 2 and the drainage pipe 3. A partition plate 4 is fixedly installed in the electrolytic cell 1, and a scum collection chamber 5 located on the right side of the partition plate 4 is provided in the electrolytic cell 1; a plurality of electrode units 6 are evenly spaced from front to back in the electrolytic cell 1 located on the left side of the partition plate 4, and the electrode unit 6 comprises an electrode plate 7 and two aeration pipes 8 arranged on the front and rear sides of the electrode plate 7, and the aeration pipes 8 extend left and right, and the electrode plate 7 is fixedly installed on the bottom wall of the electrolytic cell 1, and two adjacent electrode plates 7 are respectively connected to different poles of a power source.

[0034] The right end of the aeration pipe 8 is closed, and the left ends of the multiple aeration pipes 8 are rotatably installed on the same aeration box 9 and the left end of the aeration pipe 8 is connected to the inner cavity of the aeration box 9. A torsion spring 10 is connected between the aeration pipe 8 and the aeration box 9. The top of the aeration pipe 8 is evenly spaced along the length direction. A plurality of air outlet holes 11 are also provided on the aeration box 9. The air intake pipe 12 is connected to an air intake hose 13, and the air intake hose 13 is connected to an air compressor.

[0035] Specifically, Figure 3 As shown, a connection block 14 is provided on the outer wall of the aeration tube 8 located on the right side of the aeration box 9, and a torsion spring 10 is sleeved on the aeration tube 8 located between the aeration box 9 and the connection block 14. One end of the torsion spring 10 is fixedly connected to the right side of the aeration box 9, and the other end of the torsion spring 10 is fixedly connected to the connection block 14. When there is no external force, the aeration tube 8 is limited by the torsion spring 10 to prevent the aeration tube 8 from rotating at will, so that the air outlet 11 remains at the top of the aeration tube 8, as shown in FIG. Figure 5 As shown, upward aeration through the air outlet 11 can efficiently flush the flocs produced by electrolysis upward to the upper layer of the liquid surface of the electrolytic cell 1 .

[0036] A guide block 15 is fixedly mounted on the right end of the aeration pipe 8. Figure 6 As shown, the guide block 15 includes a circular guide portion 16 coaxially fixedly installed on the outer side of the right end of the aeration pipe 8. The guide portion 16 can be fixed to the aeration pipe 8 by screws, and the head of the screw is received in the sink groove outside the guide portion 16. The guide portion 16 is integrally formed with a shift block 17 protruding toward the side close to the corresponding electrode plate 7. The upper side of the shift block 17 is horizontally arranged and tangent to the top of the guide portion 16; a slot plate 18 is fixedly installed on the left side of the partition plate 4, and a guide groove 19 corresponding to a plurality of guide blocks 15 is provided on the left side of the slot plate 18, as shown in FIG. Figure 4As shown, the guide groove 19 is in the shape of a vertically extending strip, a trumpet-shaped opening is provided at the lower end of the guide groove 19, the width of the guide groove 19 is consistent with the diameter of the guide portion 16, and a first driving assembly for driving the multiple aeration tubes 8 to move up and down is provided in the electrolytic cell 1.

[0037] In the initial state, the aeration pipe 8 is located at the bottom of the electrolytic cell 1, and the right end of the aeration pipe 8 is located below the slot plate 18. At this time, the guide groove 19 does not interfere with the guide block 15, and the torsion spring 10 keeps the air outlet 11 at the top of the aeration pipe 8. Figure 5 As shown, the flocs produced by electrolysis are efficiently flushed upward to the upper layer of the liquid surface of the electrolytic cell 1 by upward aeration through the air outlet 11 .

[0038] After the electrode plate 7 has been working for a long time, the first driving assembly drives the plurality of aeration tubes 8 to move upward, and the aeration tube 8 drives the guide block 15 upward to enter the corresponding guide groove 19. Since the width of the guide groove 19 is consistent with the diameter of the guide portion 16, when the guide block 15 contacts the slot plate 18 upward, the lower end of the slot plate 18 pushes the shift block 17 to rotate downward, so that the side of the shift block 17 initially tangent to the guide portion 16 rotates to a vertical state, so that the guide block 15 can smoothly enter the guide groove 19 upward. At the same time, the guide block 15 drives the aeration tube 8 to rotate 90 degrees toward the side close to the corresponding electrode plate 7 and causes the torsion spring 10 to deform elastically, so that the air outlet 11 on the aeration tube 8 is aligned with the electrode plate 7. Figure 7 As shown; the first driving assembly continues to drive the aeration tube 8 to move upward, and at the same time, the aeration tube 8 drives the guide block 15 to move upward along the guide groove 19. During this process, the front and rear sides of the electrode plate 7 are aerated and flushed through the corresponding two aeration tubes 8, and the dirt adhering to the front and rear sides of the electrode plate 7 is flushed clean, thereby cleaning the electrode plate 7; when the guide block 15 moves to the upper end of the guide groove 19, the first driving assembly drives multiple aeration tubes 8 to move downward, and at the same time, the aeration tube 8 drives the guide block 15 to move downward along the guide groove 19. During this process, the corresponding two aeration tubes 8 also flush the front and rear sides of the electrode plate 7 until the aeration tube 8 drives the guide block 15 to slide down out of the guide groove 19, and the torsion spring 10 drives the aeration tube 8 to rotate back to its original position, so that the air outlet 11 rotates back to the top of the aeration tube 8, and a cleaning work is completed.

[0039] A scraping mechanism for conveying scum into a scum collecting chamber 5 is provided in the electrolytic cell 1 .

[0040] Multiple aeration tubes 8 are rotatably mounted on the same support plate 21. The support plate 21 is arranged close to the right end of the aeration tube 8. The guide block 15 is located on the right side of the support plate 21. The left and right ends of the aeration tube 8 are supported respectively by the aeration box 9 and the support plate 21, thereby improving the stability of the aeration tube 8 when it moves up and down.

[0041] The first driving assembly includes a first screw rod 22 which is respectively threadedly connected to the front and rear ends of the aeration box 9 and the front and rear ends of the support plate 21. The first screw rod 22 extends vertically. The inner sides of the front and rear side walls of the electrolytic cell 1 are respectively fixedly mounted with auxiliary plates 23 by screws. The two ends of the first screw rod 22 are respectively rotatably connected to the auxiliary plate 23 and the bottom wall of the electrolytic cell 1. The bottom of the electrolytic cell 1 is fixedly mounted with a first motor 24 for driving the first screw rod 22 to rotate. When the first motor 24 is working, it drives the first screw rod 22 to rotate, and drives the aeration box 9 and the support plate 21 to move up and down through the corresponding first screw rod 22, and then the aeration box 9 and the support plate 21 drive the multiple aeration pipes 8 to move up and down.

[0042] like Figure 1 As shown, the partition plate 4 is provided with a vertical portion 25, an inclined portion 26 and a horizontal portion 27 connected in sequence, the lower end of the vertical portion 25 is fixedly connected to the bottom wall of the electrolytic cell 1, the upper end of the vertical portion 25 is connected to the lower end of the inclined portion 26, the upper end of the inclined portion 26 is inclined to the right and connected to the left end of the horizontal portion 27, and the right end of the horizontal portion 27 is connected to the right side wall of the electrolytic cell 1, and the scum collecting chamber 5 is located between the front and rear side walls, the right side wall, the bottom wall and the partition plate 4 of the electrolytic cell 1, and the vertical portion 25, the inclined portion 26 and the horizontal portion 27 are integrally formed and arranged, and can be connected to the inner wall of the electrolytic cell 1 by welding. The slot plate 18 is fixedly installed on the left side of the vertical portion 25 by screws, and the horizontal portion 27 is provided with a sewage inlet 28 connected to the scum collecting chamber 5, and a sewage pipe 29 connected to the scum collecting chamber 5 is fixedly installed at the bottom of the electrolytic cell 1, and a valve is provided on the sewage pipe 29.

[0043] The scraping mechanism includes a mounting plate 30 movably mounted in the mouth of the electrolytic cell 1, and a vertically extending scraper 46 is slidably mounted on the right side of the mounting plate 30, and a plurality of water-permeable holes are provided on the scraper 46, such as Fig. 9 and Fig.11 As shown, a plurality of dovetail blocks 47 are fixedly installed on the left side of the scraper 46 by screws at even intervals in front and back, and a dovetail groove 48 matching the dovetail block 47 is provided on the right side of the mounting plate 30. The upper end of the dovetail groove 48 is open to facilitate the installation of the scraper 46. The mounting plate 30 is provided with a first spring 31 for pushing the scraper 46 to move downward. When the dovetail block 47 moves to the lower end of the dovetail groove 48, as shown in FIG. Figure 1 As shown, the lower end of the scraper 46 extends below the liquid level of the electrolytic cell 1, and the horizontal projection of the lower end of the scraper 46 is located on the inclined portion 26. A second driving component is provided in the electrolytic cell 1 for driving the mounting plate 30 to move left and right.

[0044] After the electrode plate 7 has been working for a long time, a large amount of floccules are washed to the upper layer of the liquid surface of the electrolytic cell 1, and the second driving assembly drives the mounting plate 30 to move rightward, and the mounting plate 30 drives the scraper 46 to move rightward, and the scraper 46 drives the floccules on the upper layer of the liquid surface to move rightward; when the scraper 46 moves rightward until its lower end contacts the inclined portion 26, the scraper 46 moves rightward while moving upward along the inclined portion 26 and compresses the first spring 31, so that the scraper 46 smoothly moves rightward along the inclined portion 26 to the top of the horizontal portion 27, and at the same time, the floccules on the upper layer of the liquid surface move rightward along the inclined portion 26 to the horizontal portion 27 driven by the scraper 46, and finally fall downward through the sewage inlet 28 into the scum collecting chamber 5, thereby cleaning the scum on the liquid surface of the electrolytic cell 1. When there is a lot of dirt collected in the scum collecting chamber 5, open the valve on the sewage pipe 29 for cleaning.

[0045] like Fig.11 As shown, in order to improve the stability of the scraper 46 moving up and down, a support 32 is fixedly installed at the left lower end of the scraper 46 by screws, and a sliding rod 33 extending upward is fixedly installed on the support 32. A sliding hole 34 matching the sliding rod 33 is provided at the bottom of the mounting plate 30, and the first spring 31 is supported between the upper end of the sliding rod 33 and the top wall of the sliding hole 34. Specifically, a plurality of sliding rods 33 are evenly spaced front and back, and the sliding holes 34 correspond to the sliding rods 33 one by one.

[0046] like Fig. 9 and Fig.10 As shown, two mounting grooves 35 are arranged in parallel on the front and back sides of the right side of the mounting plate 30, a swing rod 36 is arranged in the mounting groove 35, and hinge shafts 37 extending forward and backward are respectively arranged in the middle of the front and rear sides of the swing rod 36, and the swing rod 36 is rotatably mounted in the mounting groove 35 through the hinge shaft 37, and a clamping block 38 is arranged on the right side of the swing rod 36 above the hinge shaft 37, and a guide inclined surface 39 is arranged on the right bottom of the clamping block 38, and a limit plate 40 matching the swing rod 36 is fixedly installed on the top wall of the mounting groove 35 by screws, when the upper end of the swing rod 36 is attached to the left side of the limit plate 40, the right end of the clamping block 38 extends out of the mounting groove 35 and the projection of the scraper 46 along the vertical direction is located on the guide inclined surface 39, and the swing rod 36 is fixedly installed on the top wall of the mounting groove 35 by screws. A second spring 41 is connected between 36 and the inner wall of the mounting groove 35 for making the upper end of the swing rod 36 fit against the left side of the limit plate 40. Spring mounting grooves are respectively provided on the inner side of the left side wall of the mounting groove 35 and on the left side of the upper end of the swing rod 36. The two ends of the second spring 41 are respectively inserted into the corresponding spring mounting grooves; a slot 42 matching the block 38 is provided on the scraper 46. When the lower end of the scraper 46 is against the top of the horizontal portion 27, the slot 42 is aligned with the block 38; a mounting block 20 is fixedly installed on the inner side of the left side wall of the electrolytic cell 1 by screws, and a push rod 43 for pushing the lower end of the swing rod 36 to rotate right is provided on the right side of the mounting block 20, and a through hole for the push rod 43 to pass through is provided on the mounting plate 30.

[0047] In the process of cleaning the scum on the liquid surface of the electrolytic cell 1, when the scraper 46 moves to the right until its lower end contacts the inclined portion 26, the scraper 46 moves to the right and moves upward along the inclined portion 26. When the scraper 46 moves upward to contact the guide inclined surface 39 at the right bottom of the block 38, the scraper 46 pushes the block 38 and the upper end of the swing rod 36 to rotate leftward and compresses the second spring 41 during the upward movement, until the scraper 46 moves to the right along the inclined portion 26 to the top of the horizontal portion 27. At the same time, the scraper 46 drives the slot 42 to move upward to align with the block 38, so that the compressed second spring 41 stretches and drives the upper end of the swing rod 36 to rotate to the right, and the swing rod 36 drives the block 38 to extend rightward out of the mounting slot 35 and into the slot 42. Fig.12 shown.

[0048] After one scum cleaning is completed, the second driving assembly drives the mounting plate 30 to move leftward to the left end of the electrolytic cell 1 to facilitate the next scum cleaning operation. When the mounting plate 30 moves leftward, the card block 38 extends into the card slot 42 to hook the scraper 46, so that the scraper 46 cannot extend downward below the liquid level of the electrolytic cell 1 under the thrust of the first spring 31, thereby preventing the newly generated floccules from accumulating on the left side of the scraper 46 when the mounting plate 30 moves leftward. When the mounting plate 30 moves leftward to fit on the mounting block 20, as shown in FIG. Fig.13 As shown, the push rod 43 passes through the through hole and extends into the mounting groove 35. The lower end of the swing rod 36 is pushed to rotate rightward by the blocking effect of the push rod 43. At the same time, the upper end of the swing rod 36 rotates leftward and drives the clamping block 38 to leave the clamping groove 42 to the left. Then, the first spring 31 in the compressed state pushes the scraper 46 to move downward through the slide rod 33, so that the dovetail block 47 moves to the lower end of the dovetail groove 48 and the lower end of the scraper 46 re-extends below the liquid level of the electrolytic cell 1, so as to facilitate the next scum cleaning work.

[0049] The second driving assembly includes a second screw rod 44 respectively threadedly connected to the front and rear ends of the mounting plate 30, the second screw rod 44 extends left and right, and the two ends of the second screw rod 44 are respectively rotatably connected to the left and right side walls of the electrolytic cell 1, and a second motor 45 for driving the second screw rod 44 to rotate is fixedly installed on the electrolytic cell 1. When the second motor 45 is working, it drives the second screw rod 44 to rotate, and then drives the mounting plate 30 to move left and right through the second screw rod 44.

[0050] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A wastewater electrocatalytic oxidation reactor, comprising an electrolytic cell, characterized in that: A partition plate is fixedly installed in the electrolytic cell, and a scum collecting chamber is provided in the electrolytic cell on the right side of the partition plate; a plurality of electrode units are evenly spaced in front and back in the electrolytic cell on the left side of the partition plate, and the electrode units include an electrode plate and two aeration pipes arranged oppositely on the front and rear sides of the electrode plate, the aeration pipes extend left and right, and the electrode plate is fixedly installed on the bottom wall of the electrolytic cell; The right end of the aeration pipe is closed, the left ends of the plurality of aeration pipes are rotatably mounted on the same aeration box and the left ends of the aeration pipes are connected to the inner cavity of the aeration box, a torsion spring is connected between the aeration pipe and the aeration box, a plurality of air outlets are evenly spaced at the top of the aeration pipe along the length direction, and an air inlet pipe is also provided on the aeration box, and the air inlet pipe is connected to an air inlet hose; A guide block is fixedly installed on the right end of the aeration tube, and the guide block includes a circular guide portion coaxially fixedly installed on the outer side of the right end of the aeration tube, and a shift block is provided on the guide portion, which protrudes toward the side close to the corresponding electrode plate, and the upper side of the shift block is horizontally arranged and tangent to the top of the guide portion; a slot plate is fixedly installed on the left side of the partition plate, and a guide groove corresponding to a plurality of the guide blocks is provided on the left side of the slot plate, and the guide groove extends vertically, and the lower end of the guide groove is open, and the width of the guide groove is consistent with the diameter of the guide portion, and a first driving component for driving the plurality of aeration tubes to move up and down is provided in the electrolytic cell; The electrolytic cell is provided with a scraping mechanism for sending scum into the scum collecting chamber; The partition plate is provided with a vertical portion, an inclined portion and a horizontal portion connected in sequence, the lower end of the vertical portion is fixedly connected to the bottom wall of the electrolytic cell, the upper end of the vertical portion is connected to the lower end of the inclined portion, the high end of the inclined portion is inclined to the right and connected to the left end of the horizontal portion, the right end of the horizontal portion is connected to the right side wall of the electrolytic cell, the scum collection chamber is located between the front and rear side walls, the right side wall, the bottom wall and the partition plate of the electrolytic cell, the horizontal portion is provided with a sewage inlet connected to the scum collection chamber, and a sewage discharge pipe connected to the scum collection chamber is fixedly installed at the bottom of the electrolytic cell; The scraping mechanism includes a mounting plate movably mounted left and right in the mouth of the electrolytic cell, a vertically extending scraper is slidably mounted up and down on the right side of the mounting plate, a plurality of water-permeable holes are arranged on the scraper, a dovetail block is fixedly mounted on the left side of the scraper, a dovetail groove matching the dovetail block is arranged on the right side of the mounting plate, the upper end of the dovetail groove is open, a first spring for pushing the scraper to move downward is arranged on the mounting plate, when the dovetail block moves to the lower end of the dovetail groove, the lower end of the scraper extends below the liquid level of the electrolytic cell, and the projection of the lower end of the scraper in the horizontal direction is located on the inclined portion, and a second driving component for driving the mounting plate to move left and right is arranged in the electrolytic cell.

2. A wastewater electrocatalytic oxidation reactor as claimed in claim 1, characterized in that: The plurality of aeration tubes are rotatably mounted on the same support plate.

3. A wastewater electrocatalytic oxidation reactor as claimed in claim 2, characterized in that: The first drive assembly includes a first screw rod threadedly connected to the front and rear ends of the aeration box and the front and rear ends of the support plate, respectively. The first screw rod extends vertically, and auxiliary plates are fixedly installed on the inner sides of the front and rear side walls of the electrolytic cell, respectively. The two ends of the first screw rod are rotatably connected to the auxiliary plates and the bottom wall of the electrolytic cell, respectively. A first motor for driving the first screw rod to rotate is fixedly installed at the bottom of the electrolytic cell.

4. A wastewater electrocatalytic oxidation reactor as claimed in claim 1, characterized in that: A support is fixedly installed at the lower left end of the scraper, and a sliding rod extending upward is fixedly installed on the support. A sliding hole matching the sliding rod is provided at the bottom of the mounting plate, and the first spring is supported between the upper end of the sliding rod and the top wall of the sliding hole.

5. A wastewater electrocatalytic oxidation reactor as claimed in claim 1, characterized in that: A mounting groove is provided on the right side of the mounting plate, a swing rod is provided in the mounting groove, and hinge shafts extending forward and backward are respectively provided in the middle of the front and rear sides of the swing rod, and the swing rod is rotatably mounted in the mounting groove through the hinge shaft, and a clamping block is provided on the right side of the swing rod above the hinge shaft, and a guiding inclined surface is provided on the right bottom of the clamping block, and a limiting plate matching the swing rod is fixedly installed on the top wall of the mounting groove, and when the upper end of the swing rod is attached to the left side of the limiting plate, the right end of the clamping block extends out of the mounting groove and the The projection of the scraper in the vertical direction is located on the guide inclined plane, and a second spring is connected between the swing arm and the inner wall of the mounting groove for making the upper end of the swing arm fit against the left side of the limit plate; a slot matching the block is provided on the scraper, and when the lower end of the scraper is against the top of the horizontal part, the slot is aligned with the block; a mounting block is fixedly installed on the inner side of the left side wall of the electrolytic cell, and a push rod is provided on the mounting block for pushing the lower end of the swing arm to rotate to the right, and a through hole is provided on the mounting plate for the push rod to pass through.

6. A wastewater electrocatalytic oxidation reactor as claimed in claim 1, characterized in that: The second drive assembly includes a second screw rod threadedly connected to the front and rear ends of the mounting plate, the second screw rod extends left and right, and the two ends of the second screw rod are respectively rotatably connected to the left and right side walls of the electrolytic cell, and a second motor for driving the second screw rod to rotate is fixedly installed on the electrolytic cell.

Images