Electrochemical treatment device for heavy metal wastewater

Abstract

The utility model relates to the technical field of metal wastewater treatment, in particular to a heavy metal wastewater electrochemical treatment device. The heavy metal wastewater electrochemical treatment device comprises a box body, a limiting assembly, a connecting rod, a driving assembly, a long-strip-shaped hole and an elastic assembly, a water drainage pipe is fixedly connected to one side of the box body, an electrolytic bath is formed in the top end of the box body, and mounting supports are symmetrically and slidably connected to the two sides of the top end of the box body; a plurality of first bolts are in threaded connection with the interiors of the top ends of the two mounting brackets, a plurality of mounting grooves are formed in the sides, close to each other, of the two mounting brackets, an electrode plate is slidably connected between every two mounting grooves, and a limiting assembly is mounted at the bottom end of each mounting bracket. The electrode plate reciprocates in the electrolytic bath, so that liquid near the surface of the electrode can be directly and effectively disturbed, a diffusion layer on the surface of the electrode is greatly damaged, the speed of ion migration to the surface of the electrode is obviously accelerated, and the electrolytic reaction efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of metal wastewater treatment technology, and in particular to an electrochemical treatment device for heavy metal wastewater. Background Technology

[0002] Heavy metal wastewater refers to industrial wastewater containing heavy metal ions or their compounds, such as mercury, cadmium, lead, chromium, and arsenic. It commonly originates from industries such as mining, metallurgy, electroplating, and electronics. These heavy metals are highly toxic, non-degradable, and easily accumulate in organisms. Direct discharge pollutes soil and water bodies, harming the ecological environment and human health. Electrochemical treatment devices, with their advantages of high efficiency, environmental friendliness, and strong controllability, can reduce heavy metal ions to elemental forms or convert them into less toxic forms through electrochemical reactions, achieving the removal and recovery of heavy metals and effectively solving the problem of heavy metal pollution. Therefore, they have significant application value in the field of heavy metal wastewater treatment.

[0003] In most wastewater treatment processes, the wastewater is poured into an electrolytic cell, and then electrode plates are placed inside and fixed. At this point, a stirring device is activated to promote the uniform distribution of heavy metal ions in the wastewater, reduce the concentration gradient, and enable ions to migrate to the electrode surface more quickly, thus completing the wastewater treatment. However, stirring mainly creates macroscopic flow of the wastewater as a whole, and the disturbance to the liquid near the electrode surface is not direct or strong enough to effectively break the diffusion layer on the electrode surface. As a result, the rate at which ions migrate to the electrode surface is relatively slow, which is not conducive to improving the efficiency of the electrolytic reaction, and consequently, the overall treatment efficiency is poor.

[0004] Therefore, it is necessary to provide a new electrochemical treatment device for heavy metal wastewater to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides an electrochemical treatment device for heavy metal wastewater.

[0006] This utility model provides an electrochemical treatment device for heavy metal wastewater, comprising: a housing, a limiting component, connecting rods, a driving component, elongated holes, and an elastic component. A drain pipe is fixedly connected to one side of the housing. An electrolytic cell is opened inside the top of the housing. Mounting brackets are symmetrically and slidably connected to both sides of the top of the housing. Multiple first bolts are threaded inside the top of each of the two mounting brackets. Multiple mounting slots are opened on the adjacent sides of the two mounting brackets. An electrode plate is slidably connected between every two mounting slots. A limiting component is installed at the bottom of the mounting brackets. Two connecting rods are fixedly connected to the top of the distant sides of the two mounting brackets. Second bolts are threaded inside the connecting rods at the contact points with the mounting brackets. A support rod is fixedly connected to the bottom of the connecting rods. A connecting rod is fixedly connected to the adjacent sides of every two support rods. A movable block is fixedly connected to the adjacent sides of the two connecting rods. A limiting hole is opened inside the movable block. A driving component is installed at the bottom of the housing. Elongated holes are symmetrically opened on the front and rear sides of the housing. An elastic component is installed inside the elongated holes.

[0007] Preferably, the limiting component includes a sliding block, the top end of which is fixedly connected to the bottom end of the mounting bracket, and a sliding groove is provided at the sliding position of the mounting bracket at the top of the housing.

[0008] Preferably, the drive assembly includes a motor, the bottom end of which is fixedly connected to the bottom end of the housing, a transmission gear is fixedly connected to the drive end of the motor, a driven gear is rotatably connected to the center of the bottom end of the housing, and an eccentric rod is fixedly connected to the bottom end of the driven gear off-center from the axis.

[0009] Preferably, the elastic component includes a spring, the ends of which are fixedly connected to the two ends of the elongated hole, and two fixing rods are sleeved on the outside of the spring.

[0010] Preferably, the top side of the electrode plate is threaded to the outer side of the first bolt, and the outer side of the support rod is slidably connected to the inner wall of the elongated hole.

[0011] Preferably, the outer side of the sliding block and the inner wall of the sliding groove are slidably connected.

[0012] Preferably, the outer side of the eccentric rod and the inner side of the limiting hole are slidably connected, and the transmission gear and the driven gear are meshingly connected.

[0013] Preferably, one end of the support rod is slidably connected to the outside of the spring, one end of the fixing rod is fixedly connected to one side of the inner wall of the elongated hole, and the other end of the fixing rod is fixedly connected to one side of the support rod.

[0014] Compared with related technologies, the electrochemical treatment device for heavy metal wastewater provided by this utility model has the following beneficial effects:

[0015] This invention uses a motor-driven mechanism and a structure consisting of transmission gears, driven gears, and eccentric rods to make the electrode plates reciprocate within the electrolytic cell. This directly and effectively disturbs the liquid near the electrode surface, greatly destroys the diffusion layer on the electrode surface, significantly accelerates the rate of ion migration to the electrode surface, and improves the efficiency of the electrolytic reaction.

[0016] This invention utilizes an elastic component installed within a long, narrow hole. The combination of a spring and a fixing rod provides elastic cushioning when the support rod slides, making the support rod move more smoothly. This, in turn, ensures that the reciprocating motion of the electrode plate within the electrolytic cell remains relatively stable, preventing instability from affecting the processing effect. Attached Figure Description

[0017] Figure 1 A schematic diagram of the structure of an electrochemical treatment device for heavy metal wastewater provided by this utility model;

[0018] Figure 2 for Figure 1 The diagram shows the structure of the mounting bracket.

[0019] Figure 3 for Figure 1 The diagram shows the structure of the box.

[0020] The following are the labels in the diagram: 1. Box body; 2. Electrolytic cell; 3. Mounting bracket; 4. First bolt; 5. Mounting groove; 6. Electrode plate; 7. Sliding block; 8. Sliding groove; 9. Connecting rod; 10. Second bolt; 11. Support rod; 12. Connecting rod; 13. Movable block; 14. Limiting hole; 15. Motor; 16. Transmission gear; 17. Driven gear; 18. Eccentric rod; 19. Long hole; 20. Fixing rod; 21. Spring. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0023] Please see Figures 1 to 3An electrochemical treatment device for heavy metal wastewater includes: a housing 1, which serves as the basic load-bearing structure of the entire device; a drain pipe fixedly connected to one side of the housing 1 for discharging treated wastewater, facilitating further treatment or discharge of the treated water; an electrolytic cell 2 located inside the top of the housing 1, which is the core reaction area for the electrochemical treatment of heavy metal wastewater, where the wastewater undergoes an electrochemical reaction with the electrode plates; and mounting brackets 3 symmetrically and slidably connected to both sides of the top of the housing 1, with multiple first bolts threaded into the top of each mounting bracket 3. 4. Multiple mounting slots 5 are provided on the adjacent sides of the two mounting brackets 3. An electrode plate 6 is slidably connected between every two mounting slots 5. The mounting slots 5 provide precise positioning and guidance for the installation of the electrode plate 6, so that the electrode plate 6 can be accurately installed in the appropriate position. The sliding connection makes the installation process of the electrode plate 6 more convenient. The top side of the electrode plate 6 is threaded to the outside of one side of the first bolt 4. These first bolts 4 are used to firmly fix the electrode plate 6 on the mounting bracket 3. Through the threaded connection, the electrode plate 6 can be easily disassembled and installed according to actual needs.

[0024] A limiting component is installed at the bottom of the mounting bracket 3. The limiting component includes a sliding block 7. The top of the sliding block 7 is fixedly connected to the bottom of the mounting bracket 3. A sliding groove 8 is provided at the sliding position of the mounting bracket 3 at the top of the box 1. The sliding groove 8 and the sliding block 7 cooperate with each other to provide a track for the sliding of the mounting bracket 3, ensuring its linearity and stability. The outer side of the sliding block 7 is slidably connected to the inner wall of the sliding groove 8, so that the mounting bracket 3 can slide smoothly at the top of the box 1.

[0025] Two connecting rods 9 are fixedly connected to the top ends of the two mounting brackets 3 on opposite sides. A second bolt 10 is threaded inside the connecting rod 9 at the contact position with the mounting bracket 3. The second bolt 10 is used to fasten the connecting rod 9 to the mounting bracket 3, ensuring connection strength and facilitating adjustment or disassembly of the connecting rod 9 when needed. A support rod 11 is fixedly connected to the bottom end of the connecting rod 9. The support rod 11 supports the connecting rod 9 and enhances the stability of the entire structure. A connecting rod 12 is fixedly connected to the adjacent side of every two support rods 11. The connecting rod 12 connects the two support rods 11, enabling them to move together. A movable block 13 is fixedly connected to the adjacent side of the two connecting rods 12. A limit hole 14 is opened inside the movable block 13.

[0026] The drive assembly, including a motor 15, is installed at the bottom of the inner interior of housing 1. The motor 15 is the power source for the entire device, providing power for its operation. The bottom of the motor 15 is fixedly connected to the bottom of the inner interior of housing 1 to ensure the stability of the motor 15 during operation and prevent displacement or vibration from affecting the normal operation of the device. A transmission gear 16 is fixedly connected to the drive end of the motor 15, transmitting and converting the rotational motion of the motor 15. A driven gear 17 is rotatably connected at the center of the bottom interior of housing 1. The transmission gear 16 and the driven gear 17 are meshed, and power is transmitted from the transmission gear 16 to the driven gear 17 through the meshing of the gears. To achieve motion transmission and speed / torque conversion, an eccentric rod 18 is fixedly connected to the bottom of the driven gear 17 off-center. The eccentric rod 18 performs eccentric motion as the driven gear 17 rotates, thereby converting rotational motion into linear reciprocating motion. The outer side of the eccentric rod 18 is slidably connected to the inner side of the limiting hole 14. The limiting hole 14 provides guidance and limitation for the movement of the eccentric rod 18, enabling it to move along a predetermined trajectory. Elongated holes 19 are symmetrically provided on the front and rear sides of the housing 1. The elongated holes 19 provide space and guidance for the sliding of the support rod 11. The outer side of one side of the support rod 11 is slidably connected to the inner wall of the elongated hole 19, allowing the support rod 11 to slide smoothly within the elongated hole 19.

[0027] An elastic component is installed inside the elongated hole 19. The elastic component includes a spring 21, which uses its elastic properties to buffer and stabilize the device. One end of the support rod 11 is slidably connected to the outside of the spring 21, allowing the spring 21 to deform as the support rod 11 moves. The ends of the spring 21 are fixedly connected to both ends inside the elongated hole 19, ensuring the positional stability of the spring 21 during operation. Two fixing rods 20 are sleeved on the outside of the spring 21. The fixing rods 20 protect and guide the spring 21, preventing it from twisting or shifting during operation. They also connect the spring 21 to the support rod 11 and the inner wall of the elongated hole 19. One end of the fixing rod 20 is fixedly connected to one side of the inner wall of the elongated hole 19, and the other end is fixedly connected to one side of the support rod 11. This allows the entire elastic component to work together, ensuring the stable operation of the device.

[0028] The working principle of the electrochemical treatment device for heavy metal wastewater provided by this utility model is as follows:

[0029] First, the heavy metal wastewater to be treated is poured into the electrolytic cell 2 opened inside the top of the tank 1. Then, the electrode plate 6 is installed into the device. The electrode plate 6 is slidably connected between every two mounting slots 5. Then, using multiple first bolts 4 with internal threads at the top of the mounting bracket 3, one side of the top of the electrode plate 6 is threadedly connected to the outside of one side of the first bolt 4, thereby fixing the electrode plate 6. The mounting bracket 3 is connected to the tank 1 through a limiting component installed at its bottom. The top of the sliding block 7 in the limiting component is fixedly connected to the bottom of the mounting bracket 3. The outside of the sliding block 7 corresponds to the inner wall of the sliding groove 8 opened at the corresponding position at the top of the tank 1. The sliding connection allows the mounting bracket 3 to slide symmetrically on both sides of the top of the housing 1, paving the way for the subsequent reciprocating motion of the electrode plate 6. Then, the connecting rod 9 is internally threaded with a second bolt 10 at the contact position with the mounting bracket 3, which can be used to connect the mounting bracket 3 and the connecting rod 9 to facilitate the transmission of force. At this time, the motor 15 is started, and the transmission gear 16 will rotate under the drive of the motor 15. Since the transmission gear 16 is meshed with the driven gear 17, it will drive the driven gear 17 to rotate. The eccentric rod 18 fixedly connected at the bottom of the driven gear 17 off-center will also make eccentric movements as the driven gear 17 rotates.

[0030] Because the eccentric rod 18 is slidably connected to the limiting hole 14 inside the movable block 13, the eccentric movement of the eccentric rod 18 causes the movable block 13 to reciprocate. The movable block 13 drives the support rod 11 to slide within the elongated hole 19 via the connecting rod 12, thereby causing the mounting bracket 3 to slide on both sides of the top of the tank 1. Since the electrode plate 6 is mounted on the mounting bracket 3, the electrode plate 6 will also reciprocate within the electrolytic cell 2, directly and effectively disturbing the liquid near the electrode surface, destroying the diffusion layer, accelerating the rate of ion migration to the electrode surface, and improving the efficiency of the electrolytic reaction. During the reciprocating movement of the electrode plate 6, the heavy metal ions in the heavy metal wastewater in the electrolytic cell 2 are reduced to elemental form for precipitation or converted into a low-toxicity form through electrochemical reaction, thus achieving the removal and recovery of heavy metals.

[0031] The elastic component installed inside the elongated hole 19 plays an auxiliary and stabilizing role. The end of the spring 21 in the elastic component is fixedly connected to both ends inside the elongated hole 19, and two fixing rods 20 are sleeved on its outside. One end of the fixing rod 20 is fixedly connected to one side of the inner wall of the elongated hole 19, and the other end is fixedly connected to one side of the support rod 11. The spring 21 can provide a certain elastic buffer during the sliding of the support rod 11, making the movement of the support rod 11 more stable. At the same time, it also helps the electrode plate 6 to maintain a relatively stable reciprocating motion in the electrolytic cell 2, ensuring the stability and continuity of the entire processing process.

[0032] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An electrochemical treatment device for heavy metal wastewater, characterized in that, include: The box (1) has a drain pipe fixedly connected to one side. An electrolytic cell (2) is opened inside the top of the box (1). Mounting brackets (3) are symmetrically slidably connected to both sides of the top of the box (1). Multiple first bolts (4) are threaded inside the top of each of the two mounting brackets (3). Multiple mounting slots (5) are opened on the adjacent side of each of the two mounting brackets (3). An electrode plate (6) is slidably connected between each two mounting slots (5). Limiting components are installed at the bottom of the mounting bracket (3); Two connecting rods (9) are fixedly connected to the top of the two mounting brackets (3) on opposite sides. A second bolt (10) is threaded inside the connecting rod (9) at the contact position with the mounting bracket (3). A support rod (11) is fixedly connected to the bottom of the connecting rod (9). A connecting rod (12) is fixedly connected to the adjacent side of each pair of support rods (11). A movable block (13) is fixedly connected to the adjacent side of the two connecting rods (12). A limit hole (14) is opened inside the movable block (13). The drive assembly is installed at the bottom of the inner side of the housing (1); Long strip holes (19) are symmetrically provided on the front and rear sides of the box body (1). The elastic component is installed inside the elongated hole (19).

2. The electrochemical treatment device for heavy metal wastewater according to claim 1, characterized in that, The limiting component includes a sliding block (7), the top of the sliding block (7) is fixedly connected to the bottom of the mounting bracket (3), and a sliding groove (8) is provided at the sliding position of the mounting bracket (3) at the top of the box (1).

3. The electrochemical treatment device for heavy metal wastewater according to claim 1, characterized in that, The drive assembly includes a motor (15), the bottom end of the motor (15) is fixedly connected to the bottom end of the housing (1), the drive end of the motor (15) is fixedly connected to a transmission gear (16), the bottom end of the housing (1) is rotatably connected to a driven gear (17), and the bottom end of the driven gear (17) is fixedly connected to an eccentric rod (18) at a point off-center from the shaft.

4. The electrochemical treatment device for heavy metal wastewater according to claim 1, characterized in that, The elastic component includes a spring (21), the end of the spring (21) is fixedly connected to the two ends of the elongated hole (19), and two fixing rods (20) are sleeved on the outside of the spring (21).

5. The electrochemical treatment device for heavy metal wastewater according to claim 1, characterized in that, The top side of the electrode plate (6) is threaded to the outside of the first bolt (4), and the outside of the support rod (11) is slidably connected to the inner wall of the elongated hole (19).

6. The electrochemical treatment device for heavy metal wastewater according to claim 2, characterized in that, The outer side of the sliding block (7) is slidably connected to the inner wall of the sliding groove (8).

7. The electrochemical treatment device for heavy metal wastewater according to claim 3, characterized in that, The outer side of the eccentric rod (18) and the inner side of the limiting hole (14) are slidably connected, and the transmission gear (16) and the driven gear (17) are meshed.

8. The electrochemical treatment device for heavy metal wastewater according to claim 4, characterized in that, One end of the support rod (11) is slidably connected to the outside of the spring (21), one end of the fixing rod (20) is fixedly connected to one side of the inner wall of the elongated hole (19), and the other end of the fixing rod (20) is fixedly connected to one side of the support rod (11).

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