Electroplating wastewater treatment device capable of reducing secondary pollution

Abstract

The electroplating wastewater treatment device comprises a sedimentation tank and a secondary filter tank, the secondary filter tank is arranged at the top end of the sedimentation tank, a primary filter tank is arranged at the top end of the secondary filter tank, a chemical feeding port is formed in the outer wall of the sedimentation tank, a tank door is arranged on the outer wall of the sedimentation tank below the chemical feeding port, and a secondary filter tank is arranged at the top end of the primary filter tank. A valve is arranged on the outer wall of the secondary filter box, a filter cartridge is movably mounted in the primary filter box, a driving motor is mounted on the inner wall of the primary filter box, a gear is mounted at the output end of the driving motor, a gear ring sleeves the surface of the filter cartridge on one side of the gear, and the gear is meshed with the gear ring. According to the wastewater treatment device, impurity particles in wastewater can be conveniently and rapidly filtered in a multi-stage manner, the wastewater can be stirred in a reciprocating manner, the filter screen can be conveniently and movably scraped, swept and cleaned, a medicament and the wastewater can be uniformly and fully contacted, and the wastewater treatment effect is improved.

Description

Technical Field

[0001] This utility model relates to the technical field of wastewater treatment devices, specifically to an electroplating wastewater treatment device that reduces secondary pollution. Background Technology

[0002] Electroplating utilizes electrochemical principles to deposit a metal layer on the surface of a substrate through electrolysis. During the electroplating process, current drives metal ions to undergo a reduction reaction in an electrolyte solution, which then deposits on the substrate material, which serves as the cathode, forming a dense metal coating. Electroplating is widely used in various fields, including automotive, aerospace, electronics, and construction. In the automotive industry, electroplating provides effective corrosion protection for parts; in the electronics field, electroplating can improve the conductivity of contacts; in addition, electroplating is also a key technology for achieving decorative effects on metal surfaces, widely used in the production of jewelry and ornaments. However, after the workpiece is electroplated, the resulting wastewater contains a large number of impurity particles. To reduce secondary pollution of the environment, it is necessary to filter the impurity particles in the wastewater before discharging it. To better filter the impurity particles, an electroplating wastewater treatment device to reduce secondary pollution is proposed.

[0003] For example, the electroplating wastewater treatment device for reducing secondary pollution disclosed in the authorization announcement number CN222274324U includes a treatment box, with support columns fixedly installed at the four corners of the bottom of the treatment box, an observation window provided on the front of the treatment box, a motor A fixedly installed on the left side of the treatment box, a spiral blade fixedly installed at the output end of the motor A, a feed pipe fixedly installed on the left side of the treatment box, a treatment mechanism provided inside the treatment box, an adjustment mechanism provided inside the treatment box, and a discharge pipe fixedly installed on the right side of the treatment box.

[0004] Although it achieves the function of reciprocating screw, fixed column A, movable block, rotating column and slider to drive scraper to reciprocate and scrape the filter screen, and spray the adsorption grid through the reciprocating swing of the nozzle to remove harmful substances, the spray is more extensive and the removal is more thorough through the left and right movement of the baffle.

[0005] However, it does not solve the problem that existing wastewater treatment devices are not conducive to convenient multi-stage filtration of impurities and particles in wastewater, nor to the reciprocating movement and stirring of wastewater. They are also not conducive to moving and scraping the filter screen for cleaning, nor to ensuring that the reagents and wastewater make uniform and sufficient contact, thus affecting the wastewater treatment effect. Utility Model Content

[0006] The purpose of this utility model is to provide an electroplating wastewater treatment device that reduces secondary pollution, thereby solving the problems mentioned in the background art, such as the inconvenience of multi-stage filtration of impurities and particles in wastewater and the reciprocating movement and stirring of wastewater, which makes it difficult to move and scrape the filter screen for cleaning and to ensure that the reagents are in uniform and sufficient contact with the wastewater, thus affecting the wastewater treatment effect.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an electroplating wastewater treatment device for reducing secondary pollution, comprising a sedimentation tank and a secondary filter box. The secondary filter box is installed at the top of the sedimentation tank, and a primary filter box is installed at the top of the secondary filter box. A dosing port is provided on the outer wall of the sedimentation tank, and a door is provided on the outer wall of the sedimentation tank below the dosing port. A valve is provided on the outer wall of the secondary filter box. A filter cylinder is movably installed inside the primary filter box. A drive motor is installed on the inner wall of the primary filter box, and a gear is installed at the output end of the drive motor. A toothed ring is fitted on the surface of the filter cylinder on one side of the gear, and the gear and the toothed ring mesh with each other. Multiple sets of guide strips with equal spacing are installed on the inner wall of the filter cylinder.

[0008] Preferably, the secondary filter box is provided with an arc-shaped filter screen inside, and an upper integrated frame is symmetrically arranged on the inner wall of the secondary filter box above the arc-shaped filter screen.

[0009] Preferably, each of the upper integrated frames has a drive screw movably installed inside, and each of the upper integrated frames has a servo motor installed on its side wall, with the output end of the servo motor connected to the drive screw.

[0010] Preferably, the surface of the drive screw is fitted with a first threaded sleeve, and the first threaded sleeve is threadedly connected to the drive screw.

[0011] Preferably, an arc-shaped scraper is slidably mounted on the surface of the arc-shaped filter screen, and the arc-shaped scraper is connected to the first threaded sleeve.

[0012] Preferably, the sedimentation tank is provided with symmetrically arranged lower integrated frames on its inner wall, and bidirectional lead screws are movably installed inside each lower integrated frame. A drive motor is provided on the side wall of each lower integrated frame, and the output end of the drive motor is connected to the bidirectional lead screw.

[0013] Preferably, the surface of the bidirectional lead screw is fitted with two sets of second threaded sleeves, and the second threaded sleeves are threadedly connected to the bidirectional lead screw, and a movable frame is installed between the two sets of second threaded sleeves.

[0014] Preferably, a stirring motor is installed at the top of each of the movable frames, and a stirring frame is installed at the output end of each stirring motor.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the wastewater treatment device not only realizes convenient multi-stage filtration of impurity particles in wastewater and reciprocating movement and stirring of wastewater, but also facilitates the movement and scraping of the filter screen and ensures uniform and sufficient contact between the agent and the wastewater, thus improving the wastewater treatment effect.

[0016] (1) The electroplating wastewater is poured into the filter cylinder. The drive motor drives the gear to rotate. The gear drives the filter cylinder to rotate inside the primary filter box through the gear ring. Impurity particles larger than the diameter of the holes on the surface of the filter cylinder remain inside the filter cylinder and are discharged outside the filter cylinder under the guidance of the guide strip. The wastewater and fine particles fall onto the surface of the arc-shaped filter screen after passing through the filter cylinder. The wastewater falls into the sedimentation tank after passing through the arc-shaped filter screen. The fine particles remain on the surface of the arc-shaped filter screen. When a lot of fine particles accumulate on the surface of the arc-shaped filter screen, the servo motor drives the drive screw to rotate. The drive screw drives the first threaded sleeve to move. The two sets of first threaded sleeves drive the arc-shaped scraper to move. The arc-shaped scraper scrapes the fine particles on the surface of the arc-shaped filter screen to the valve position and discharges them from the valve to clean the surface of the arc-shaped filter screen. This avoids the filter effect being affected by a lot of impurity particles. It realizes convenient multi-stage filtration of impurity particles in wastewater, facilitates the movement and scraping of the filter screen, and improves the filtration effect.

[0017] (2) By adding alkaline agents into the sedimentation tank through the dosing port, the pH value of the wastewater is increased to the alkaline range, which promotes the reaction of metal impurities with other components in the plating solution to form water-insoluble hydroxide precipitates. After adding the agents, the stirring motor drives the stirring frame to stir the wastewater. The transmission motor drives the bidirectional screw to rotate, and the bidirectional screw drives the second threaded sleeve to move in opposite directions. Under the forward and reverse action of the transmission motor, the second threaded sleeve drives the stirring frame to move back and forth through the moving frame. The stirring frame moves back and forth to stir the wastewater, so that the agents and wastewater can be in more uniform and sufficient contact. Then the stirring motor is turned off, and the impurities in the wastewater are allowed to settle. After the sedimentation is completed, the wastewater is pumped out, the tank door is opened, and the sediment inside the sedimentation tank is cleaned out. This avoids the secondary pollution to the environment caused by direct discharge of electroplating wastewater. It realizes convenient reciprocating stirring of wastewater, which facilitates the uniform and sufficient contact of agents and wastewater, and improves the wastewater treatment effect. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a side sectional view of the present invention.

[0020] Figure 3 This is a three-dimensional perspective structural diagram of the primary filter box of this utility model;

[0021] Figure 4 This is a three-dimensional perspective structural diagram of the secondary filter box of this utility model;

[0022] Figure 5 This is a three-dimensional perspective structural diagram of the sedimentation tank of this utility model.

[0023] In the diagram: 1. Sedimentation tank; 2. Secondary filter box; 3. Primary filter box; 4. Valve; 5. Chemical dosing port; 6. Box door; 7. Arc-shaped scraper; 8. Gear; 9. Gear ring; 10. Filter cylinder; 11. Guide bar; 12. Drive motor; 13. Servo motor; 14. First threaded sleeve; 15. Upper integrated frame; 16. Drive screw; 17. Arc-shaped filter screen; 18. Moving frame; 19. Lower integrated frame; 20. Second threaded sleeve; 21. Transmission motor; 22. Bidirectional screw; 23. Agitator motor; 24. Agitator frame. 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] Please see Figure 1-5 An embodiment of this utility model provides an electroplating wastewater treatment device for reducing secondary pollution, comprising a sedimentation tank 1 and a secondary filter box 2. The secondary filter box 2 is provided at the top of the sedimentation tank 1, and a primary filter box 3 is provided at the top of the secondary filter box 2. A chemical dosing port 5 is provided on the outer wall of the sedimentation tank 1, and a door 6 is provided on the outer wall of the sedimentation tank 1 below the chemical dosing port 5. A valve 4 is provided on the outer wall of the secondary filter box 2. A filter cylinder 10 is movably installed inside the primary filter box 3. A drive motor 12 is installed on the inner wall of the primary filter box 3. The drive motor 12 provides power driving, and a gear 8 is installed at the output end of the drive motor 12. A toothed ring 9 is fitted on the surface of the filter cylinder 10 on one side of the gear 8, and the gear 8 and the toothed ring 9 mesh with each other. Multiple sets of guide strips 11 with equal spacing are installed on the inner wall of the filter cylinder 10.

[0026] Electroplating wastewater is poured into the filter cylinder 10. The drive motor 12 is turned on, which drives the gear 8 to rotate. Under the meshing of the gear 8 and the gear ring 9, the gear 8 drives the filter cylinder 10 to rotate inside the primary filter box 3 through the gear ring 9. Impurities larger than the diameter of the pores on the surface of the filter cylinder 10 remain inside the filter cylinder 10 and are discharged outside the filter cylinder 10 by the guiding action of the guide bar 11. The wastewater and fine particles fall onto the surface of the arc-shaped filter screen 17 after passing through the filter cylinder 10. The wastewater falls into the sedimentation tank 1 after passing through the arc-shaped filter screen 17, while the fine particles remain on the surface of the arc-shaped filter screen 17. When a large number of fine particles accumulate on the surface of the arc-shaped filter screen 17... The servo motor 13 and valve 4 are opened, and the servo motor 13 drives the drive screw 16 to rotate. With the drive screw 16 and the first threaded sleeve 14 threaded together, the drive screw 16 drives the first threaded sleeve 14 to move. The two sets of first threaded sleeves 14 drive the arc-shaped scraper 7 to move. With the sliding cooperation between the arc-shaped scraper 7 and the arc-shaped filter screen 17, the arc-shaped scraper 7 scrapes the fine particles on the surface of the arc-shaped filter screen 17 to the position of valve 4 and discharges them from valve 4. This cleans the surface of the arc-shaped filter screen 17 and avoids the filter effect being affected by a large number of impurities. It realizes convenient multi-stage filtration of impurities in wastewater, facilitates the movement and scraping of the filter screen for cleaning, and improves the filtration effect.

[0027] The interior of the secondary filter box 2 is provided with an arc-shaped filter screen 17, and an upper integrated frame 15 is symmetrically arranged on the inner wall of the secondary filter box 2 above the arc-shaped filter screen 17.

[0028] Drive screws 16 are movably installed inside the upper integrated frame 15, and servo motors 13 are installed on the side walls of the upper integrated frame 15. The servo motors 13 play the role of power drive, and the output end of the servo motors 13 is connected to the drive screws 16.

[0029] The surface of the drive screw 16 is fitted with a first threaded sleeve 14, and the first threaded sleeve 14 is threadedly connected to the drive screw 16. The surface of the arc-shaped filter screen 17 is slidably mounted with an arc-shaped scraper 7, and the arc-shaped scraper 7 is connected to the first threaded sleeve 14.

[0030] A lower integrated frame 19 is symmetrically arranged on the inner wall of the sedimentation tank 1. A bidirectional lead screw 22 is movably installed inside the lower integrated frame 19. A drive motor 21 is arranged on the side wall of the lower integrated frame 19. The drive motor 21 plays the role of power drive, and the output end of the drive motor 21 is connected to the bidirectional lead screw 22.

[0031] Two sets of second threaded sleeves 20 are fitted on the surface of the bidirectional lead screw 22, and the second threaded sleeves 20 are threadedly connected to the bidirectional lead screw 22. A movable frame 18 is installed between the two sets of second threaded sleeves 20. A stirring motor 23 is installed at the top of the movable frame 18. The stirring motor 23 plays the role of power drive, and a stirring frame 24 is installed at the output end of the stirring motor 23.

[0032] Alkaline reagents are added to sedimentation tank 1 through dosing port 5 to raise the pH value of the wastewater to the alkaline range, promoting the reaction of metallic impurities with other components in the plating solution to form water-insoluble hydroxide precipitates. After adding the reagents, stirring motor 23 is turned on, driving stirring frame 24 to stir the wastewater. Simultaneously, drive motor 21 is turned on, driving bidirectional lead screw 22 to rotate. With the bidirectional lead screw 22 threaded to the second threaded sleeve 20, the bidirectional lead screw 22 drives the second threaded sleeve 20 to move in opposite directions. Under the action of rotation, the second threaded sleeve 20 drives the stirring frame 24 to move back and forth through the moving frame 18. The stirring frame 24 stirs the wastewater back and forth to make the reagent and wastewater more even and fully contact. Then, the stirring motor 23 is turned off and the impurities in the wastewater are allowed to settle. After the sedimentation is complete, the wastewater is pumped out, the box door 6 is opened, and the sediment inside the sedimentation tank 1 is cleaned out. This avoids the secondary pollution to the environment caused by direct discharge of electroplating wastewater. It realizes convenient reciprocating stirring of wastewater, which facilitates even and full contact between the reagent and wastewater and improves the wastewater treatment effect.

[0033] Working principle: Electroplating wastewater is poured into the filter cylinder 10. The drive motor 12 drives the gear 8 to rotate, and the gear 8 drives the filter cylinder 10 to rotate inside the primary filter box 3 through the gear ring 9. Impurities larger than the diameter of the pores on the surface of the filter cylinder 10 remain inside the filter cylinder 10 and are discharged outside the filter cylinder 10 by the guiding action of the guide bar 11. The wastewater and fine particles fall onto the surface of the arc-shaped filter screen 17 after passing through the filter cylinder 10. The wastewater then falls into the sedimentation tank 1 after passing through the arc-shaped filter screen 17, while the fine particles remain inside the sedimentation tank 1. When a large number of fine particles accumulate on the surface of the arc-shaped filter screen 17, the servo motor 13 drives the drive screw 16 to rotate. With the drive screw 16 threadedly connected to the first threaded sleeve 14, the drive screw 16 moves the first threaded sleeve 14. The two sets of first threaded sleeves 14 then move the arc-shaped scraper 7. Through the sliding cooperation between the arc-shaped scraper 7 and the arc-shaped filter screen 17, the arc-shaped scraper 7 scrapes the fine particles from the surface of the arc-shaped filter screen 17 to the valve 4 and discharges them from the valve 4, thus cleaning the arc-shaped filter screen. The surface of mesh 17 is cleaned to prevent excessive impurities from affecting its filtration effect. Alkaline reagents are added to sedimentation tank 1 through dosing port 5 to raise the pH of the wastewater to an alkaline range, promoting the reaction of metallic impurities with other components in the plating solution to form water-insoluble hydroxide precipitates. After adding the reagents, stirring motor 23 drives stirring frame 24 to stir the wastewater. Drive motor 21 drives bidirectional lead screw 22 to rotate, which in turn drives second threaded sleeve 20 to move in opposite directions. Under the reverse action, the second threaded sleeve 20 drives the stirring frame 24 to move back and forth through the moving frame 18. The stirring frame 24 stirs the wastewater back and forth to make the reagent and wastewater more evenly and fully contact. Then, the stirring motor 23 is turned off and the impurities in the wastewater are allowed to settle. After the sedimentation is complete, the wastewater is pumped out, the box door 6 is opened, and the sediment inside the sedimentation tank 1 is cleaned out. This avoids the secondary pollution to the environment caused by direct discharge of electroplating wastewater. The above is the complete usage of the electroplating wastewater treatment device to reduce secondary pollution.

Claims

1. A device for treating electroplating wastewater to reduce secondary pollution, comprising a sedimentation tank (1) and a secondary filter box (2), characterized in that: The top of the sedimentation tank (1) is provided with a secondary filter box (2), the top of the secondary filter box (2) is provided with a primary filter box (3), the outer wall of the sedimentation tank (1) is provided with a dosing port (5), the outer wall of the sedimentation tank (1) below the dosing port (5) is provided with a box door (6), the outer wall of the secondary filter box (2) is provided with a valve (4), the inside of the primary filter box (3) is movably provided with a filter cylinder (10), the inner wall of the primary filter box (3) is provided with a driving motor (12), the output end of the driving motor (12) is provided with a gear (8), the surface of the filter cylinder (10) on one side of the gear (8) is provided with a gear ring (9), the gear (8) and the gear ring (9) are meshed with each other, and the inner wall of the filter cylinder (10) is provided with a plurality of groups of guide strips (11) at equal intervals.

2. The electroplating wastewater treatment device of claim 1, wherein the device is characterized by: The inside of the secondary filter box (2) is provided with an arc-shaped filter screen (17), and the inner wall of the secondary filter box (2) above the arc-shaped filter screen (17) is symmetrically provided with an upper integrated frame (15).

3. The apparatus for treating electroplating wastewater to reduce secondary pollution according to claim 2, characterized in that: The inside of the upper integrated frame (15) is movably provided with a driving lead screw (16), and the sidewall of the upper integrated frame (15) is provided with a servo motor (13), and the output end of the servo motor (13) is connected with the driving lead screw (16).

4. The apparatus for treating electroplating wastewater to reduce secondary pollution according to claim 3, characterized in that: The surface of the driving lead screw (16) is provided with a first threaded sleeve (14), and the first threaded sleeve (14) is threadedly connected with the driving lead screw (16).

5. The apparatus for treating electroplating wastewater to reduce secondary pollution according to claim 2, characterized in that: The surface of the arc-shaped filter screen (17) is slidably provided with an arc-shaped scraper (7), and the arc-shaped scraper (7) is connected with the first threaded sleeve (14).

6. The apparatus for treating electroplating wastewater to reduce secondary pollution according to claim 1, wherein: The inner wall of the sedimentation tank (1) is symmetrically provided with a lower integrated frame (19), the inside of the lower integrated frame (19) is movably provided with a bidirectional lead screw (22), the sidewall of the lower integrated frame (19) is provided with a transmission motor (21), and the output end of the transmission motor (21) is connected with the bidirectional lead screw (22).

7. The apparatus for treating electroplating wastewater to reduce secondary pollution according to claim 6, characterized in that: The surface of the bidirectional lead screw (22) is provided with two groups of second threaded sleeves (20), the second threaded sleeves (20) are threadedly connected with the bidirectional lead screw (22), and the two groups of second threaded sleeves (20) are both provided with a moving frame (18).

8. The apparatus for treating electroplating wastewater to reduce secondary pollution according to claim 7, characterized in that: The top of the moving frame (18) is provided with a stirring motor (23), and the output end of the stirring motor (23) is provided with a stirring frame (24).

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