Sewage treatment electrolytic tank

Abstract

The utility model discloses a sewage treatment electrolytic tank which comprises an electrolytic tank body, a cathode plate is connected to the inner wall of one side of the electrolytic tank body, an anode plate is connected to the inner wall of the other side of the electrolytic tank body, and a cleaning mechanism is arranged on the outer side of the cathode plate and the outer side of the anode plate and comprises scrapers arranged on the outer side of the cathode plate and the outer side of the anode plate. The outer sides of the scrapers are connected with a mounting frame through bolts, one side of the mounting frame is connected with a connecting frame, the outer side of the connecting frame is provided with a reciprocating screw rod, the reciprocating screw rod is in threaded connection with a sliding block, the sliding block is connected with the connecting frame, and the bottom end of the reciprocating screw rod is connected with a driving mechanism. According to the online cleaning device, precipitates such as hydroxide and carbonate generated on the surface of an electrode can be effectively removed, the scraper blade can be driven to move periodically through the reciprocating screw rod and the driving mechanism, dynamic online cleaning of the surface of the electrode is achieved, and the treatment interruption time caused by shutdown cleaning is shortened.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and more specifically, to a wastewater treatment electrolytic cell. Background Technology

[0002] In the field of wastewater treatment, electrolysis, as a highly efficient physicochemical treatment technology, has been widely used in recent years. Its basic principle is to use an external direct current to cause pollutants in wastewater to undergo oxidation and reduction reactions at the anode and cathode, respectively, thereby effectively removing heavy metal ions, organic matter, and suspended solids.

[0003] However, in actual operation, the surfaces of the cathode and anode plates of the electrolytic cell are prone to scaling and passivation due to the formation of hydroxide and carbonate precipitates or the adsorption of pollutants by the electrolysis reaction. This seriously affects the conductivity and reaction efficiency of the electrodes, and may even lead to frequent system shutdowns for cleaning, increasing maintenance costs. At the same time, some electrolytic cells lack effective stirring devices in their design, resulting in uneven distribution of pollutants in the wastewater, which can easily lead to local concentration polarization and affect electrolysis efficiency. Utility Model Content

[0004] In view of the problems in the related technologies, this utility model proposes a wastewater treatment electrolytic cell to overcome the above-mentioned technical problems existing in the existing related technologies.

[0005] Therefore, the specific technical solution adopted by this utility model is as follows:

[0006] An electrolytic cell for wastewater treatment includes an electrolytic cell with a cathode plate connected to the inner wall of one side and an anode plate connected to the inner wall of the other side. A cleaning mechanism is provided on the outer side of the cathode plate and the anode plate. The cleaning mechanism includes a scraper located on the outer side of the cathode plate and the anode plate. A mounting frame is bolted to the outer side of the scraper. A connecting frame is connected to one side of the mounting frame. A reciprocating screw is provided on the outer side of the connecting frame. A slider is threaded onto the reciprocating screw. The slider is connected to the connecting frame. The bottom end of the reciprocating screw is connected to a drive mechanism.

[0007] Furthermore, in order to drive the reciprocating screw to rotate, the drive mechanism includes a connecting rod at the bottom end of the reciprocating screw, a drive shaft on one side of the connecting rod, a pulley connected to the drive shaft and the connecting rod, the two pulleys being connected by a belt drive, and the bottom end of the drive shaft being connected to the output end of the drive motor.

[0008] Furthermore, the two ends of the reciprocating screw are connected to the mounting plate via bearings, the mounting plate is connected to the electrolytic cell, the reciprocating screw is connected to the connecting rod, the bottom end of the connecting rod is connected to the first fixed plate via bearings, and the first fixed plate is connected to the electrolytic cell.

[0009] Furthermore, the drive motor is fixed on the mounting base, which is connected to the electrolytic cell.

[0010] Furthermore, in order to drive the rotating shaft to rotate, a driving bevel gear is connected to the top of the driving shaft. The driving bevel gear meshes with the driven bevel gear, and the driven bevel gear is connected to the rotating shaft. The rotating shaft is connected to the electrolytic cell through a bearing, and a stirring rod is provided on the rotating shaft.

[0011] Furthermore, a limiting plate is provided at the top of the electrolytic cell, and a limiting rod is connected through the inside of the limiting plate. The limiting rod is connected to the mounting frame.

[0012] Furthermore, the electrolytic cell has an inlet pipe on one side and an outlet pipe on the other side.

[0013] Furthermore, the drive shaft is connected to the second fixed plate via a bearing, and the second fixed plate is connected to the electrolytic cell.

[0014] The beneficial effects of this utility model are as follows:

[0015] (1) By setting scrapers on the outside of the cathode plate and anode plate, the precipitates such as hydroxides and carbonates generated on the electrode surface can be effectively removed, avoiding the electrode scaling and passivation problems common in traditional electrolysis. Furthermore, the scrapers can be driven to move periodically by the reciprocating screw and drive mechanism, realizing dynamic online cleaning of the electrode surface and reducing the processing interruption time caused by shutdown cleaning.

[0016] (2) The active bevel gear and the driven bevel gear set at the top of the drive shaft mesh, thereby driving the stirring rod on the rotating shaft to rotate, which enhances the fluidity and mixing degree of sewage in the electrolysis cell, promotes the effective contact between pollutants and electrodes, and improves the mass transfer rate. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a front view of a wastewater treatment electrolysis cell according to an embodiment of the present utility model;

[0019] Figure 2 This is a side view of a wastewater treatment electrolysis cell according to an embodiment of the present utility model;

[0020] Figure 3 This is a top view of a wastewater treatment electrolysis cell according to an embodiment of the present utility model;

[0021] Figure 4 This is a diagram showing the connection of scraper plates in an electrolytic cell for wastewater treatment according to an embodiment of the present invention.

[0022] In the picture:

[0023] 1. Electrolytic cell; 2. Cathode plate; 3. Anode plate; 4. Cleaning mechanism; 401. Scraper; 402. Mounting bracket; 403. Connecting bracket; 404. Reciprocating lead screw; 405. Slider; 5. Drive mechanism; 501. Connecting rod; 502. Drive shaft; 503. Pulley; 504. Belt; 505. Drive motor; 6. Mounting plate; 7. First fixing plate; 8. Mounting base; 9. Driving bevel gear; 10. Driven bevel gear; 11. Rotating shaft; 12. Stirring rod; 13. Limiting plate; 14. Limiting rod; 15. Water inlet pipe; 16. Water outlet pipe; 17. Second fixing plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figures 1-4As shown, the wastewater treatment electrolytic cell according to an embodiment of this utility model includes an electrolytic cell 1, which serves as the basic container for the entire device, used to hold the wastewater to be treated and to provide a site for electrochemical reactions. The electrolytic cell 1 is made of corrosion-resistant material to resist the acidic and alkaline environment generated during electrolysis. A cathode plate 2 is connected to one inner wall of the electrolytic cell 1, where a reduction reaction occurs, reducing certain ions in the solution to metals or other substances. An anode plate 3 is connected to the other inner wall of the electrolytic cell 1, where an oxidation reaction occurs, oxidizing and decomposing pollutants or converting them into more easily treatable forms. A cleaning mechanism 4 is provided on the outer sides of the cathode plate 2 and the anode plate 3. The cleaning mechanism 4 includes a scraper 401 located on the outer sides of the cathode plate 2 and the anode plate 3, used to remove precipitates adhering to the surfaces of the anode plate 3 and the cathode plate 2. The scraper 401 is made of polytetrafluoroethylene (PTFE). A mounting bracket 402 is bolted to the outer side of the scraper 401, supporting and fixing the scraper 401, allowing it to move along the electrode surface under the drive of a reciprocating screw 404. A connecting frame 403 is connected to one side of the mounting frame 402, serving as an intermediate transition component and connecting the mounting frame 402 and the slider 405. A reciprocating screw 404 is provided on the outer side of the connecting frame 403, converting rotary motion into linear motion to drive the connecting frame 403 and the scraper 401 to reciprocate, completing the automatic cleaning of the electrode surface. A slider 405 is threadedly connected to the reciprocating screw 404, engaging with the thread on the screw and moving axially as the screw rotates, thereby driving the connecting frame 403 and the scraper 401 to move synchronously. The slider 405 is connected to the connecting frame 403. Both ends of the reciprocating screw 404 are connected to the mounting plate 6 via bearings. The mounting plate 6 is connected to the electrolytic cell 1, providing support points for the reciprocating screw 404 and fixing it to the electrolytic cell 1. A limiting plate 13 is provided at the top of the electrolytic cell 1, and a limiting rod 14 is connected through the limiting plate 13. The limiting rod 14 is connected to the mounting frame 402, which limits the vertical movement range of the mounting frame 402 and prevents the scraper 401 from derailing. A water inlet pipe 15 is provided on one side of the electrolytic cell 1 for introducing the wastewater to be treated into the electrolytic cell 1. A water outlet pipe 16 is provided on the other side, and a valve is provided on the water outlet pipe 16 for discharging the treated water.

[0026] like Figures 1-4As shown, the bottom end of the reciprocating screw 404 is connected to the drive mechanism 5. The drive mechanism 5 includes a connecting rod 501 located at the bottom end of the reciprocating screw 404, which serves as a transmission component to transmit the rotational force of the drive shaft 502 to the reciprocating screw 404. The bottom end of the connecting rod 501 is connected to the first fixed plate 7 via a bearing. The first fixed plate 7 is connected to the electrolytic cell 1, providing a support point for the connecting rod 501 and ensuring its stable operation. A drive shaft 502 is located on one side of the connecting rod 501. A pulley 503 is connected to the drive shaft 502 and the connecting rod 501, and the two pulleys 503 are connected by a belt 504. The bottom end of the drive shaft 502 is connected to the output end of the drive motor 505, providing the power source for the entire system and driving the scraper 401 and the stirring rod 12. The drive motor 505 is fixed on the mounting base 8, providing a stable mounting foundation for the drive motor 505. The mounting base 8 is connected to the electrolytic cell 1. A drive bevel gear 9 is connected to the top of the drive shaft 502, which meshes with a driven bevel gear 10. The driven bevel gear 10 is connected to a rotating shaft 11. The rotating shaft 11 is connected to the electrolytic cell 1 via bearings and is used to drive the stirring rod 12 to rotate, enhancing the mixing effect of wastewater in the electrolytic cell 1. The stirring rod 12 is mounted on the rotating shaft 11, which increases the fluidity of the wastewater through rotation, promotes effective contact between pollutants and electrodes, and improves mass transfer efficiency. The drive shaft 502 is connected to a second fixed plate 17 via bearings. The second fixed plate 17 is connected to the electrolytic cell 1, providing additional support points for the drive shaft 502 and ensuring its stability during high-speed rotation. A control switch is connected to the outside of the electrolytic cell 1 to control the start and stop of the drive motor 505 and adjust its operating parameters.

[0027] In actual use, the wastewater to be treated enters the electrolytic cell 1 through the inlet pipe 15 located on one side of the electrolytic cell 1. A reduction reaction occurs on the cathode plate 2, reducing metal ions in the solution (such as divalent copper ions, divalent nickel ions, and hexavalent chromium ions) into elemental metals or low-valence compounds, which are then deposited on the cathode surface. Simultaneously, water molecules decompose on the cathode surface to generate hydrogen gas, further promoting the reduction and transformation of pollutants. An oxidation reaction occurs on the anode plate 3, generating substances with strong oxidizing properties (such as hydroxyl radicals (OH) and sulfate radicals), which can oxidize and degrade organic pollutants. During electrolysis, the drive motor 505 is activated, driving the drive shaft 502 to rotate. The rotation of the drive shaft 502 drives the connecting rod 501 to rotate via a belt drive system, and the rotation of the connecting rod 501 drives the reciprocating screw 404 to rotate synchronously. The reciprocating screw 404 rotates, causing the slider 405 to reciprocate linearly along its axis. The slider 405 drives the connecting frame 403, mounting frame 402, and scraper 401 to move together, thereby removing reactants adhering to the anode plate 3 and cathode plate 2. Simultaneously, the drive shaft 502 drives the connecting rod 501 to rotate, which in turn drives the driving bevel gear 9 to rotate. The rotation of the driving bevel gear 9 drives the driven bevel gear 10 to rotate, thereby driving the rotating shaft 11 and stirring rod 12 to rotate. The stirring rod 12 agitates the electrolyte, breaks the diffusion boundary layer, accelerates the migration of pollutants to the electrode surface, improves current density utilization, reduces concentration polarization, and thus improves overall reaction efficiency. After a certain period of electrolysis, the main pollutants in the wastewater have been effectively removed. The treated water is discharged from the system through the outlet pipe 16 on the other side of the electrolytic cell 1.

[0028] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wastewater treatment electrolytic cell, characterized in that, The electrolytic cell (1) is provided with a cathode plate (2) connected to one inner wall and an anode plate (3) connected to the other inner wall. A cleaning mechanism (4) is provided on the outer side of the cathode plate (2) and the anode plate (3). The cleaning mechanism (4) includes a scraper (401) located on the outer side of the cathode plate (2) and the anode plate (3). A mounting bracket (402) is bolted to the outer side of the scraper (401). A connecting bracket (403) is connected to one side of the mounting bracket (402). A reciprocating screw (404) is provided on the outer side of the connecting bracket (403). A slider (405) is threaded onto the reciprocating screw (404). The slider (405) is connected to the connecting bracket (403). The bottom end of the reciprocating screw (404) is connected to the driving mechanism (5).

2. The wastewater treatment electrolytic cell according to claim 1, characterized in that, The drive mechanism (5) includes a connecting rod (501) located at the bottom of the reciprocating lead screw (404). A drive shaft (502) is provided on one side of the connecting rod (501). A pulley (503) is connected to the drive shaft (502) and the connecting rod (501). The two pulleys (503) are connected by a belt (504). The bottom end of the drive shaft (502) is connected to the output end of the drive motor (505).

3. The wastewater treatment electrolytic cell according to claim 1, characterized in that, The two ends of the reciprocating screw (404) are connected to the mounting plate (6) through bearings. The mounting plate (6) is connected to the electrolytic cell (1). The reciprocating screw (404) is connected to the connecting rod (501). The bottom end of the connecting rod (501) is connected to the first fixed plate (7) through bearings. The first fixed plate (7) is connected to the electrolytic cell (1).

4. The wastewater treatment electrolytic cell according to claim 1, characterized in that, The drive motor (505) is fixed on the mounting base (8), which is connected to the electrolytic cell (1).

5. The wastewater treatment electrolytic cell according to claim 1, characterized in that, The top of the drive shaft (502) is connected to the active bevel gear (9), which meshes with the driven bevel gear (10). The driven bevel gear (10) is connected to the rotating shaft (11), which is connected to the electrolytic cell (1) through a bearing. The rotating shaft (11) is equipped with a stirring rod (12).

6. The wastewater treatment electrolytic cell according to claim 1, characterized in that, The top of the electrolytic cell (1) is provided with a limiting plate (13), and a limiting rod (14) is connected through the inside of the limiting plate (13). The limiting rod (14) is connected to the mounting frame (402).

7. The wastewater treatment electrolytic cell according to claim 1, characterized in that, The electrolytic cell (1) has an inlet pipe (15) on one side and an outlet pipe (16) on the other side.

8. The wastewater treatment electrolytic cell according to claim 1, characterized in that, The drive shaft (502) is connected to the second fixed plate (17) via a bearing, and the second fixed plate (17) is connected to the electrolytic cell (1).

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