Recovery treatment device for electrochemical experiment waste liquid

Abstract

The invention relates to the technical field of recycling treatment, and discloses an electrochemical experiment waste liquid recycling treatment device which comprises a pretreatment reaction kettle, a solid-liquid separation device is arranged on the right side of the pretreatment reaction kettle, and four waste liquid storage boxes are arranged on the left side of the pretreatment reaction kettle and used for storing different types of waste liquid; and the switching mechanism is located at the bottom of the waste liquid storage box and used for switching the position of the waste liquid storage box. By arranging a plurality of groups of independent waste liquid storage boxes and arranging a switching mechanism consisting of a motor, a bevel gear pair and a rotating plate, the device can automatically rotate and accurately position different waste liquids which are temporarily stored in a classified manner according to a treatment instruction, so that a liquid outlet pipeline of the device is butted with a liquid inlet pipeline of a pretreatment reaction kettle; the problems that the equipment occupancy rate is high, manual pipeline switching is complex, and cross contamination is prone to occurring when multiple waste liquids need to be treated in batches are effectively solved, and modularization and automation of the treatment process are achieved.

Description

Technical Field

[0001] This invention relates to the field of recycling and treatment technology, specifically to a recycling and treatment device for electrochemical experimental waste liquid. Background Technology

[0002] Electrochemical experiments, as an important branch of chemistry, are widely used in fields such as energy storage and conversion, electrosynthesis, corrosion science, sensor development, and basic electrochemical mechanism research.

[0003] However, existing laboratories typically use a single collection tank or manually switch pipelines to connect different pretreatment devices when processing various electrochemical waste liquids. This method not only occupies a large amount of space, but also involves cumbersome manual pipeline switching operations. It is easy for waste liquids of different properties to mix due to misconnection or incomplete cleaning, which may cause safety accidents or cross-contamination, seriously affecting the purity and effectiveness of subsequent recycling and treatment. Based on this, the present invention designs a recycling and treatment device for electrochemical experimental waste liquids to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to provide a device for recycling and treating electrochemical experimental waste liquid, which solves the problems of low efficiency in waste liquid classification and treatment and easy cross-contamination in the prior art.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: An electrochemical experimental waste liquid recycling and treatment device, comprising: A pretreatment reactor is provided, with a solid-liquid separation device on the right side and a waste liquid collection tank on the left side, and the waste liquid collection tank is provided with four sets for collecting different types of waste liquid. A conversion mechanism is located at the bottom of the waste liquid collection tank and is used to change the position of the waste liquid collection tank. The conversion mechanism includes a driving component and a sliding component. The driving component is located on the left side of the pretreatment reactor and drives the rotation of the sliding component. The sliding component is located inside the driving component and is used for smooth rotation. An adapter mechanism is located inside the pretreatment reactor and is used to adapt to the stirring height of different chemical liquids.

[0006] Preferably, the drive assembly includes a rotating plate installed at the bottom of the waste liquid collection tank, a passive rod installed at the bottom of the rotating plate, a driven bevel gear installed on the outer ring of the passive rod, a rotating frame installed at the bottom of the passive rod, a conversion motor installed inside the rotating frame, a rotating rod installed on one side of the output shaft of the conversion motor, an active bevel gear installed on the outer ring of the rotating rod, and the active bevel gear and the driven bevel gear meshing with each other.

[0007] Preferably, the sliding component includes a groove formed on the top of the rotating frame, a ball bearing is slidably connected inside the groove, a connecting rod is installed on the top of the ball bearing, and multiple sets of the ball bearing and the connecting rod are arranged in a circumferential array. The top of the connecting rod is connected to the bottom of the rotating plate.

[0008] Preferably, the waste liquid collection box has an inlet on its top, an outlet pipe on its outer side, an inlet pipe on one side of the pretreatment reactor, and the outlet pipe and the inlet pipe are connected by a connecting pipe.

[0009] Preferably, the adapter mechanism includes a mounting base installed inside the pretreatment reactor. The mounting base is arranged in four sets in a rectangular array. A bidirectional lead screw is installed between the mounting bases. The bidirectional lead screw is arranged in two sets in a symmetrical distribution. An adapter motor is installed on the front of the bidirectional lead screw located on the left side. A tensioning wheel is installed on the back of each bidirectional lead screw. The tensioning wheels are connected to each other by a rotating belt. A moving block is threaded to the outer ring of the bidirectional lead screw. A linkage component is installed on the top of the moving block.

[0010] Preferably, the linkage component includes an adjustment plate hinged to the top of the moving block, a lifting plate is installed inside the pretreatment reactor, a sliding groove is provided at the bottom of the lifting plate, a slider is installed at the top of the adjustment plate, the slider slides inside the sliding groove, a limit component is installed between the pretreatment reactor and the lifting plate, and a stirring component is installed inside the pretreatment reactor.

[0011] Preferably, the limiting component includes a limiting telescopic rod installed between the pretreatment reactor and the lifting plate, and the limiting telescopic rod is provided in four sets and distributed in a rectangular array.

[0012] Preferably, the stirring assembly includes a stirring motor installed at the bottom of the lifting plate, a stirring rod installed at the bottom of the output shaft of the stirring motor, and a passive component installed on the outer ring of the stirring rod.

[0013] Preferably, the passive component includes a working frame installed on the outer ring of the stirring rod, a working rod installed inside the working frame, a first bevel gear installed on the outer ring of the stirring rod, a second bevel gear installed on the outer ring of the working rod, the first bevel gear and the second bevel gear meshing with each other, and a stirring plate installed on the outer ring of both the stirring rod and the working rod.

[0014] Preferably, the pretreatment reactor and the solid-liquid separation device are connected by an input pipe, and the solid-liquid separation device is equipped with a separation screen plate inside.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. In this invention, by setting up multiple independent waste liquid collection boxes and equipping them with a conversion mechanism consisting of a motor, bevel gear pair and rotating plate, this device can automatically rotate and accurately position different temporarily stored waste liquids according to the processing instructions, so that their liquid outlet pipes can be connected with the liquid inlet pipes of the pretreatment reactor. This effectively solves the problems of high equipment occupancy, complex manual pipe switching and easy cross-contamination when multiple waste liquids need to be processed in batches. It realizes the modularization and automation of the processing process, and significantly improves the processing efficiency and the convenience and safety of operation.

[0016] 2. In this invention, through an adapter mechanism consisting of a motor, a bidirectional lead screw, a moving block, and a linkage component, the operator can automatically adjust the overall working height of the stirring assembly according to the physical characteristics of the input waste liquid. Combined with the stable guidance of the limiting component, this ensures the stirrer is always at the optimal working depth. This design overcomes the shortcomings of fixed stirrers in terms of uneven mixing efficiency for liquids of different properties. It allows for flexible adjustment of the stirring depth for high-viscosity or volatile waste liquids, thereby enhancing mixing and promoting reaction while effectively reducing splashing and suppressing volatilization, thus improving the uniformity and controllability of the pretreatment reaction.

[0017] 3. In this invention, the stirring assembly, through a bevel gear transmission structure, achieves synchronous counter-rotation of the stirring rod and driven rod. Multiple sets of stirring plates mounted on the dual shafts thus create a strong convection and shear flow field. When chemical reagents are added to the reactor, this dual-shaft counter-rotating stirring mode, compared to traditional single-shaft stirring, significantly eliminates dead zones, allowing the added chemical reagents and waste liquid to achieve rapid and thorough three-dimensional mixing and reaction within the reactor. This greatly shortens the time required for pretreatment such as neutralization and precipitation, improving treatment efficiency and quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front view structural diagram of the present invention; Figure 3 This is a side view of the structure of the present invention; Figure 4 for Figure 3 Enlarged view of point A; Figure 5 This is a front view of the internal structure of the pretreatment reactor of the present invention; Figure 6 This is a side view of the internal structure of the pretreatment reactor of the present invention; Figure 7 This is a front view of the stirring assembly of the present invention.

[0019] The components include: 1. Pretreatment reactor; 2. Solid-liquid separation device; 3. Waste liquid collection box; 4. Rotating plate; 5. Passive rod; 6. Driven bevel gear; 7. Rotating frame; 8. Conversion motor; 9. Rotating rod; 10. Driving bevel gear; 11. Groove; 12. Ball bearing; 13. Connecting rod; 14. Liquid inlet; 15. Liquid outlet pipe; 16. Liquid inlet pipe; 17. Connecting pipe; 18. Mounting base; 19. Bidirectional lead screw; 20. Adaptor motor; 21. Tensioning wheel; 22. Rotating belt; 23. Moving block; 24. Adjusting plate; 25. Lifting plate; 26. Slide groove; 27. Sliding block; 28. Limiting telescopic rod; 29. ​​Stirring motor; 30. Stirring rod; 31. Working frame; 32. Working rod; 33. First bevel gear; 34. Second bevel gear; 35. Stirring plate; 36. Input pipe; 37. Separation screen plate. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1; Please see Figures 1-6 An electrochemical experimental waste liquid recycling and treatment device includes: a pretreatment reactor 1, a solid-liquid separation device 2 arranged on the right side of the pretreatment reactor 1, and a waste liquid collection tank 3 arranged on the left side of the pretreatment reactor 1, the waste liquid collection tank 3 being provided with four sets for collecting different types of waste liquid; a conversion mechanism, the conversion mechanism being located at the bottom of the waste liquid collection tank 3 and used for changing the position of the waste liquid collection tank 3, the conversion mechanism including a driving component and a sliding component, the driving component being located on the left side of the pretreatment reactor 1 and driving the rotation of the sliding component, the sliding component being located inside the driving component and used for smooth rotation; and an adaptation mechanism, the adaptation mechanism being located inside the pretreatment reactor 1 and used for adapting to the stirring height of different chemical liquids.

[0022] The drive assembly includes a rotating plate 4 installed at the bottom of the waste liquid collection tank 3. A driven rod 5 is installed at the bottom of the rotating plate 4, and a driven bevel gear 6 is installed on the outer ring of the driven rod 5. A rotating frame 7 is installed at the bottom of the driven rod 5, and a conversion motor 8 is installed inside the rotating frame 7. A rotating rod 9 is installed on one side of the output shaft of the conversion motor 8, and a driving bevel gear 10 is installed on the outer ring of the rotating rod 9. The driving bevel gear 10 and the driven bevel gear 6 mesh with each other. The sliding assembly includes a groove 11 formed on the top of the rotating frame 7. A ball bearing 12 is slidably connected inside the groove 11. A connecting rod 13 is installed on the top of the ball bearing 12. Multiple sets of the ball bearing 12 and the connecting rod 13 are arranged in a circumferential array. The top of the connecting rod 13 is connected to the bottom of the rotating plate 4.

[0023] The working principle of this invention is as follows: When the control system selects the target waste liquid type according to the processing requirements, the conversion motor 8 starts, driving the rotating rod 9 at its output shaft end and the active bevel gear 10 fixed thereon to rotate. Since the active bevel gear 10 and the driven bevel gear 6 are in constant mesh, the rotational power is efficiently transmitted to the driven bevel gear 6, which in turn drives the passive rod 5 fixed thereon to rotate. The upper end of the passive rod 5 is rigidly connected to the rotating plate 4, thereby driving the rotating plate 4 and the four waste liquid collection boxes 3 arranged in a circular array above it to rotate as a whole.

[0024] To ensure a smooth, precise, and low-resistance rotation process, the sliding components work in sync. Multiple sets of connecting rods 13 fixed to the bottom of the rotating plate 4 are equipped with ball bearings 12 at their lower ends. These ball bearings 12 are nested in the annular groove 11 at the top of the rotating frame 7. When the rotating plate 4 rotates, the ball bearings 12 roll smoothly in the groove 11, transforming traditional sliding friction into rolling friction, which greatly reduces rotational resistance and effectively prevents jamming.

[0025] Example 2; Please see Figures 1-7 In this embodiment of the invention, an inlet 14 is installed on the top of the waste liquid collection box 3, an outlet pipe 15 is installed on the outside of the waste liquid collection box 3, an inlet pipe 16 is installed on one side of the pretreatment reactor 1, and the outlet pipe 15 and the inlet pipe 16 are connected by a connecting pipe 17.

[0026] The adapter mechanism includes mounting bases 18 installed inside the pretreatment reactor 1. Four sets of mounting bases 18 are arranged in a rectangular array. Two sets of bidirectional lead screws 19 are installed between the mounting bases 18, arranged symmetrically. An adapter motor 20 is installed on the front of the bidirectional lead screw 19 located on the left side. Tensioning wheels 21 are installed on the back of each bidirectional lead screw 19. The tensioning wheels 21 are connected to each other via a rotating belt 22. A moving block 23 is threaded onto the outer ring of the bidirectional lead screw 19. A linkage assembly is installed on the top of the moving block 23. The linkage assembly includes an adjusting plate 24 hinged to the top of the moving block 23. A lifting plate 25 is installed inside the pretreatment reactor 1. A groove 26 is formed at the bottom of the lifting plate 25. A slider 27 is installed on the top of the adjusting plate 24, and the slider 27 slides within the groove 26. A limit assembly is installed between the pretreatment reactor 1 and the lifting plate 25. A stirring assembly is installed inside the pretreatment reactor 1.

[0027] The working principle of this invention is as follows: When the waste liquid enters the pretreatment reactor 1, the control system presets the optimal stirring height parameters based on the physical characteristics of the waste liquid and starts the adapter motor 20. The adapter motor 20 directly drives the left bidirectional lead screw 19 to rotate. To ensure synchronous lifting and lowering movements on both sides, the tensioning wheel 21 located at the rear end of the two bidirectional lead screws 19 is connected and transmitted through a closed rotating belt 22, so that the right bidirectional lead screw 19 obtains a rotational movement that is completely synchronized with the left side. As the two bidirectional lead screws 19 rotate in the same direction, the two moving blocks 23 respectively screwed on them begin to move precisely in a straight line along the axis of the lead screw, either in opposite directions or in opposite directions, under the drive of the screw threads. This horizontal movement is converted into the vertical movement of the lifting plate 25 through the linkage component. The top of each moving block 23 is connected to an adjusting plate 24 through a hinge. A slider 27 is installed on the upper end of the adjusting plate 24. The slider 27 is embedded in the straight groove 26 fixed at the bottom of the lifting plate 25. When the moving block 23 moves horizontally, it forces the adjusting plate 24 to rotate around its lower hinge point, and the slider 27 at its top slides in the groove 26. Due to the constraint of the groove 26, the angular displacement of the adjusting plate 24 is converted into a direct upward or downward pushing or pulling force on the lifting plate 25.

[0028] Example 3; Please see Figures 1-7 In this embodiment of the invention, the limiting component includes a limiting telescopic rod 28 installed between the pretreatment reactor 1 and the lifting plate 25. The limiting telescopic rod 28 is provided in four sets and is distributed in a rectangular array.

[0029] The mixing assembly includes a mixing motor 29 mounted on the bottom of the lifting plate 25. A mixing rod 30 is mounted on the bottom of the output shaft of the mixing motor 29, and a passive component is mounted on the outer ring of the mixing rod 30. The passive component includes a working frame 31 mounted on the outer ring of the mixing rod 30. A working rod 32 is mounted inside the working frame 31. A first bevel gear 33 is mounted on the outer ring of the mixing rod 30, and a second bevel gear 34 is mounted on the outer ring of the working rod 32. The first bevel gear 33 and the second bevel gear 34 mesh with each other. A mixing plate 35 is mounted on the outer ring of both the mixing rod 30 and the working rod 32.

[0030] The pretreatment reactor 1 and the solid-liquid separation device 2 are connected by an input pipe 36, and a separation screen 37 is installed inside the solid-liquid separation device 2.

[0031] The working principle of this invention is as follows: After the stirring assembly is positioned to the optimal height under the drive of the adapter mechanism, the stirring motor 29 starts, and its output shaft directly drives the stirring rod 30 to rotate at high speed. To significantly improve mixing efficiency, the passive component is put into operation simultaneously. Inside the working frame 31 fixed on the stirring rod 30, a working rod 32 is installed in parallel with the bearing. The first bevel gear 33 installed on the stirring rod 30 and the second bevel gear 34 installed on the working rod 32 mesh with each other to form a right-angle gear transmission pair. Therefore, the rotational power of the stirring rod 30 is diverted and transmitted to the working rod 32, driving the working rod 32 to rotate at the same speed but in opposite directions. Thus, the multiple sets of stirring plates 35 installed on the outer rings of the stirring rod 30 and the working rod 32 respectively form a powerful stirring mode with dual-axis opposite rotation. Strong shearing and convection are generated in the pretreatment reactor 1, ensuring that the added chemical reagents and waste liquid come into rapid and uniform contact and react in three-dimensional space, thereby efficiently completing the pretreatment process such as neutralization or precipitation.

[0032] Working Principle: First, waste liquids are classified, collected, and selected. Based on the chemical properties of the waste liquids, researchers classify, pour, and temporarily store them through the inlets 14 on the top of the four waste liquid collection tanks 3. When a specific waste liquid needs to be treated, the control system activates the conversion mechanism. The conversion motor 8 operates, driving the rotating rod 9 and the active bevel gear 10 to rotate. Through meshing, the driven bevel gear 6 and the passive rod 5 rotate, causing the rotating plate 4 above and the four waste liquid collection tanks 3 it carries to rotate as a whole. During this process, the sliding assembly consisting of the groove 11, ball bearings 12, and connecting rod 13 ensures smooth rotation and precise positioning. The system rotates the target waste liquid collection tank 3 until its outlet pipe 15 aligns with the inlet pipe 16 on the pretreatment reactor 1 via the connecting pipe 17, preparing it for subsequent transport.

[0033] Secondly, the system performs adaptive adjustment of the stirring height and waste liquid transportation. Before or simultaneously with the waste liquid transportation, the system activates the adaptation mechanism based on the current physical properties of the waste liquid to optimize the stirring conditions. The adaptation motor 20 drives the left bidirectional lead screw 19 to rotate, and through the transmission of the tension wheel 21 and the rotating belt 22, the right lead screw rotates synchronously. The two lead screws drive the two moving blocks 23 on them to move towards or away from each other. The movement of the moving blocks 23 is converted into the vertical movement of the lifting plate 25 through the linkage component. The angle of the adjustment plate 24 at the top of the moving block 23 changes, and the slider 27 at its top slides in the groove 26 at the bottom of the lifting plate 25, thereby pushing and pulling the lifting plate 25. The four sets of limit telescopic rods 28 ensure that the lifting plate 25 maintains stable vertical movement, and finally adjusts the entire stirring assembly fixed on it to the preset optimal working height. Then, the selected waste liquid is transported to the pretreatment reactor 1 through the connected pipeline by the pump.

[0034] Next, the waste liquid undergoes efficient stirring pretreatment. After the waste liquid enters the reactor, the stirring motor 29 starts, driving the stirring rod 30 for main stirring. Simultaneously, the passive components begin to work; the first bevel gear 33 on the stirring rod 30 meshes with the second bevel gear 34 on the working rod 32, transmitting power to the working rod 32, causing the stirring plates 35 on both rods to rotate in opposite directions simultaneously. This dual-shaft counter-stirring design greatly enhances the mixing intensity and efficiency of the fluid inside the reactor, ensuring that the added chemical agents can react quickly and fully with the waste liquid to complete pretreatment processes such as neutralization and precipitation. The entire stirring process is carried out at an optimized height to achieve the best results and avoid splashing.

[0035] Finally, the pretreated mixture is subjected to solid-liquid separation. After the pretreatment is completed, the slurry formed in the vessel is transported to the solid-liquid separation device 2 through the input pipe 36. After the slurry enters the device, the solid particles are intercepted by the separation screen 37, while the liquid is filtered out, thereby achieving solid-liquid separation. The separated solid residue can be disposed of in a centralized and safe manner, while the clarified liquid is guided to the subsequent recovery or deep purification unit.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for recycling and treating electrochemical experimental waste liquid, characterized in that, include: A pretreatment reactor (1) is provided with a solid-liquid separation device (2) on the right side of the pretreatment reactor (1) and a waste liquid collection box (3) is provided on the left side of the pretreatment reactor (1) and the waste liquid collection box (3) is provided with four sets for collecting different types of waste liquid. The conversion mechanism is located at the bottom of the waste liquid collection tank (3) and is used to change the position of the waste liquid collection tank (3). The conversion mechanism includes a driving component and a sliding component. The driving component is located on the left side of the pretreatment reactor (1) and drives the rotation of the sliding component. The sliding component is located inside the driving component and is used for smooth rotation. An adapter mechanism is located inside the pretreatment reactor (1) and is used to adapt to the stirring height of different chemical liquids.

2. The electrochemical experimental waste liquid recycling and treatment device according to claim 1, characterized in that: The drive assembly includes a rotating plate (4) installed at the bottom of the waste liquid collection tank (3), a passive rod (5) installed at the bottom of the rotating plate (4), a driven bevel gear (6) installed on the outer ring of the passive rod (5), a rotating frame (7) installed at the bottom of the passive rod (5), a conversion motor (8) installed inside the rotating frame (7), a rotating rod (9) installed on one side of the output shaft of the conversion motor (8), an active bevel gear (10) installed on the outer ring of the rotating rod (9), and the active bevel gear (10) meshes with the driven bevel gear (6).

3. The electrochemical experimental waste liquid recycling and treatment device according to claim 2, characterized in that: The sliding component includes a groove (11) on the top of the rotating frame (7), a ball (12) is slidably connected inside the groove (11), a connecting rod (13) is installed on the top of the ball (12), and multiple sets of the ball (12) and the connecting rod (13) are arranged in a circumferential array. The top of the connecting rod (13) is connected to the bottom of the rotating plate (4).

4. The electrochemical experimental waste liquid recycling and treatment device according to claim 1, characterized in that: The waste liquid collection box (3) is equipped with an inlet (14) on the top, and an outlet pipe (15) is installed on the outside of the waste liquid collection box (3). An inlet pipe (16) is installed on one side of the pretreatment reactor (1). The outlet pipe (15) and the inlet pipe (16) are connected by a connecting pipe (17).

5. The electrochemical experimental waste liquid recycling and treatment device according to claim 1, characterized in that: The adapter mechanism includes a mounting base (18) installed inside the pretreatment reactor (1). The mounting base (18) is arranged in four sets in a rectangular array. A bidirectional lead screw (19) is installed between the mounting bases (18). The bidirectional lead screw (19) is arranged in two sets in a symmetrical distribution. An adapter motor (20) is installed on the front of the bidirectional lead screw (19) located on the left side. Tensioning wheels (21) are installed on the back of each bidirectional lead screw (19). The tensioning wheels (21) are connected to each other by a rotating belt (22). A moving block (23) is threaded to the outer ring of the bidirectional lead screw (19). A linkage component is installed on the top of the moving block (23).

6. The electrochemical experimental waste liquid recycling and treatment device according to claim 5, characterized in that: The linkage component includes an adjustment plate (24) hinged to the top of the moving block (23), a lifting plate (25) is installed inside the pretreatment reactor (1), a sliding groove (26) is provided at the bottom of the lifting plate (25), a slider (27) is installed at the top of the adjustment plate (24), the slider (27) slides inside the sliding groove (26), a limit component is installed between the pretreatment reactor (1) and the lifting plate (25), and a stirring component is installed inside the pretreatment reactor (1).

7. The electrochemical experimental waste liquid recycling and treatment device according to claim 6, characterized in that: The limiting component includes a limiting telescopic rod (28) installed between the pretreatment reactor (1) and the lifting plate (25), and the limiting telescopic rod (28) is provided in four sets and distributed in a rectangular array.

8. The electrochemical experimental waste liquid recycling and treatment device according to claim 6, characterized in that: The stirring assembly includes a stirring motor (29) installed at the bottom of the lifting plate (25), a stirring rod (30) installed at the bottom of the output shaft of the stirring motor (29), and a passive component installed on the outer ring of the stirring rod (30).

9. The electrochemical experimental waste liquid recycling and treatment device according to claim 8, characterized in that: The passive component includes a working frame (31) installed on the outer ring of the stirring rod (30), a working rod (32) installed inside the working frame (31), a first bevel gear (33) installed on the outer ring of the stirring rod (30), a second bevel gear (34) installed on the outer ring of the working rod (32), the first bevel gear (33) and the second bevel gear (34) meshing with each other, and a stirring plate (35) installed on the outer ring of both the stirring rod (30) and the working rod (32).

10. The electrochemical experimental waste liquid recycling and treatment device according to claim 1, characterized in that: The pretreatment reactor (1) is connected to the solid-liquid separation device (2) via an input pipe (36), and a separation screen plate (37) is installed inside the solid-liquid separation device (2).

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