Nickel-containing electroplating wastewater settling and filtering device

Abstract

The utility model provides a nickel-containing electroplating wastewater settling and filtering device, which relates to the technical field of electroplating wastewater settling and filtering, and comprises a settling vat, the upper surface of the settling vat is fixedly connected with a cover plate, the cover plate is provided with an input pipe, the input pipe penetrates through the cover plate, and the cover plate is provided with a lifting stirring device. By arranging the sliding pipe, the rotating rod stirs electroplating wastewater through the first supporting rod and the stirring plate, combination of alkaline liquid and the electroplating wastewater is promoted, and during precipitation and stirring, the sliding pipe gradually ascends in the process that the rotating rod stirs the liquid and is far away from the bottom of the settling vat for precipitation, and meanwhile the stirring speed is gradually reduced; sediments formed at the bottom of the settling vat are prevented from being damaged, and the settling efficiency is favorably improved.

Description

Technical Field

[0001] This utility model belongs to the field of electroplating wastewater sedimentation and filtration technology, and particularly relates to a sedimentation and filtration device for nickel-containing electroplating wastewater. Background Technology

[0002] Nickel-containing electroplating wastewater is a highly polluting industrial wastewater generated during the nickel electroplating process. It mainly comes from the plating tank waste liquid, rinsing water of plated parts, and equipment cleaning water in the nickel electroplating production line. It contains a large amount of nickel ions and may also contain other heavy metal ions, complexing agents, surfactants, and other pollutants. Its composition is complex. Settling of nickel-containing electroplating wastewater is an important step in the treatment of this type of wastewater. It aims to separate the nickel ions and other pollutants in the wastewater from the wastewater by forming precipitates through physical or chemical methods, thereby achieving the purpose of purifying the water quality.

[0003] In the settling of nickel electroplating wastewater, neutralization precipitation and sulfide precipitation methods can be used. The corresponding precipitant needs to be added to the wastewater to undergo a chemical reaction and generate precipitates. During the addition of the precipitant, stirring can be used to promote full mixing of the precipitant and the wastewater and accelerate the sedimentation process. However, stirring can easily destroy the precipitate that has already been formed, reducing the sedimentation efficiency. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a sedimentation and filtration device for nickel-containing electroplating wastewater, which can more accurately solve the problems described above.

[0005] This utility model is achieved through the following technical solution:

[0006] This utility model proposes a sedimentation and filtration device for nickel-containing electroplating wastewater, including a sedimentation tank, a cover plate fixedly connected to the upper surface of the sedimentation tank, an input pipe provided on the cover plate, the input pipe penetrating the cover plate, a lifting and stirring device provided on the cover plate, and a filter assembly provided at the bottom of the sedimentation tank.

[0007] In one example, the lifting and stirring device includes a sliding tube that passes through and is slidably connected to a cover plate. A mounting box is fixedly connected to the upper end of the sliding tube. A drive motor is fixedly connected inside the mounting box. A rotating rod is fixedly connected to the main shaft of the drive motor. The rotating rod is located inside the sliding tube. A first support rod is fixedly connected to the outer side of the rotating rod. One end of the first support rod is fixedly connected to a stirring plate.

[0008] In one example, the upper surface of the cover plate is fixedly connected to the housing, the sliding tube and the rotating rod pass through the housing, the outer side of the sliding tube is fixedly connected to the rack, the side of the housing is fixedly connected to the servo motor, the main shaft of the servo motor is fixedly connected to the gear, and the gear meshes with the rack.

[0009] In one example, the filter assembly includes a conical cylinder fixedly connected to a settling tank, the lower surface of which is open, and a filter tube fixedly connected to the lower surface of the conical cylinder. The radius of the filter tube is the same as the radius of the lower opening of the conical cylinder, and a piston is slidably connected inside the filter tube.

[0010] In one example, the lower surface of the settling tank is fixedly connected to the discharge tank, the settling tank and the discharge tank are in communication, the lower surface of the discharge tank is fixedly connected to the bracket, the bracket and the discharge tank are provided with opposing circular through grooves, the side wall of the circular through groove on the discharge tank is fixedly connected to the vertical pipe, the vertical pipe is fixedly connected to the filter pipe, the radius of the vertical pipe is larger than the radius of the filter pipe, the lower surface of the discharge tank is connected to the discharge pipe, and the discharge pipe passes through the bracket.

[0011] In one example, a support plate is fixedly connected to the inner wall of the vertical pipe, a placement cylinder is fixedly connected to the support plate, a sliding rod is slidably connected inside the placement cylinder, a spring is fixedly connected between the sliding rod and the placement cylinder, and the sliding rod is fixedly connected to a piston.

[0012] In one example, a plurality of second support rods are fixedly connected to the outer side of the rotating rod, and an elastic scraper is fixedly connected to one end of each second support rod.

[0013] The sedimentation and filtration device for nickel-containing electroplating wastewater proposed in this utility model can bring the following beneficial effects:

[0014] Firstly, by setting up a sliding tube, the drive motor is turned on, which drives the rotating rod to rotate. The rotating rod stirs the electroplating wastewater through the first support rod and the stirring plate, promoting the combination of alkaline liquid and electroplating wastewater for sedimentation. The servo motor drives the gear, so that the sliding tube gradually rises during the process of the rotating rod stirring the liquid, and is farther away from the bottom of the sedimentation tank. At the same time, the stirring speed gradually decreases to avoid damaging the sediment already formed at the bottom of the sedimentation tank, which is conducive to improving the sedimentation efficiency.

[0015] Secondly, by setting up a piston and a filter tube, a servo motor drives a gear to lower the sliding tube and rotating rod. The rotating rod presses down on the piston, causing it to descend into the filter tube. The treated wastewater passes through the filter tube and is discharged through the discharge pipe for reuse. At this time, the sliding tube and rotating rod continue to descend, causing the piston to leave the filter tube. The upper surface of the piston is arc-shaped. The sediment passes through the filter tube and the placement cylinder, and can be collected from below the bracket for recycling, making recycling convenient. Attached Figure Description

[0016] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0017] In the attached diagram:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0020] Figure 3 This is a schematic diagram of the sliding tube and rotating rod of this utility model.

[0021] Figure 4 This is a schematic diagram of the filter tube and piston of this utility model.

[0022] In the diagram: 1. Settling tank; 2. Cover plate; 3. Input pipe; 4. Lifting and stirring device; 41. Sliding pipe; 42. Mounting box; 43. Drive motor; 44. Rotating rod; 45. First support rod; 46. Stirring plate; 5. Filter assembly; 51. Conical cylinder; 52. Filter pipe; 53. Piston; 6. Box body; 7. Rack; 8. Servo motor; 9. Gear; 10. Discharge tank; 11. Bracket; 12. Vertical pipe; 13. Discharge pipe; 14. Support plate; 15. Placement cylinder; 16. Sliding rod; 17. Spring; 18. Second support rod; 19. Elastic scraper. Detailed Implementation

[0023] To more clearly illustrate the overall concept of this utility model, a detailed description will be provided below with reference to the accompanying drawings.

[0024] like Figures 1-4 As shown in the figure, an embodiment of this utility model proposes a sedimentation and filtration device for nickel-containing electroplating wastewater, including a sedimentation tank 1, a cover plate 2 fixedly connected to the upper surface of the sedimentation tank 1, an input pipe 3 provided on the cover plate 2, the input pipe 3 penetrating the cover plate 2, a lifting and stirring device 4 provided on the cover plate 2, and a filter assembly 5 provided at the bottom of the sedimentation tank 1. In use, nickel-containing electroplating wastewater is poured into the sedimentation tank 1 through the input pipe 3, and then an alkaline solution is poured in through the input pipe 3. Through a neutralization reaction, nickel hydroxide is generated and precipitated. During the neutralization process, the drive motor 43 is turned on, driving the rotating rod 4 4. Rotation: The rotating rod 44, through the first support rod 45 and the stirring plate 46, stirs the electroplating wastewater, promoting the combination of alkaline liquid and electroplating wastewater for sedimentation. Initially, the rotating rod 44 extends into the settling tank 1 and stirs near the bottom. After stirring for a period of time, the sliding tube 41 is pushed, causing the sliding tube 41 and the rotating rod 44 to rise, increasing the distance between them and the bottom of the settling tank 1, thus moving them further away from the sediment at the bottom of the settling tank 1. At the same time, the stirring speed gradually decreases to avoid damaging the sediment already formed at the bottom of the settling tank 1, which is beneficial to improving the sedimentation efficiency.

[0025] like Figure 2 and Figure 3As shown, the lifting and stirring device 4 includes a sliding tube 41, which passes through and is slidably connected to the cover plate 2. The upper end of the sliding tube 41 is fixedly connected to the mounting box 42, and the mounting box 42 is fixedly connected to the drive motor 43. The main shaft of the drive motor 43 is fixedly connected to the rotating rod 44, which is located inside the sliding tube 41. The outer side of the rotating rod 44 is fixedly connected to the first support rod 45, and one end of the first support rod 45 is fixedly connected to the stirring plate 46. The upper surface of the cover plate 2 is fixedly connected to the box body 6, and the sliding tube 41 and the rotating rod 44 pass through the box body 6. The outer side of the sliding tube 41 is fixedly connected to the rack 7, and one side of the box body 6 is fixedly connected to the servo motor 8. The main shaft of the servo motor 8 is fixedly connected to the gear 9, which meshes with the rack 7. During stirring, the servo motor 8 drives the gear 9, causing the sliding tube 41 to gradually rise as the rotating rod 44 stirs the liquid, moving further and further away from the sediment at the bottom of the settling tank 1, thus avoiding damage to the sediment at the bottom of the settling tank 1 and making operation more convenient.

[0026] like Figure 2 and Figure 4 As shown, the filter assembly 5 includes a conical cylinder 51, which is fixedly connected to a settling tank 1. The lower surface of the settling tank 1 is open. A filter tube 52 is fixedly connected to the lower surface of the conical cylinder 51. The radius of the filter tube 52 is the same as the radius of the lower opening of the conical cylinder 51. A piston 53 is slidably connected inside the filter tube 52. When electroplating wastewater is poured in, the piston 53 is located at the lower opening of the conical cylinder 51, blocking the conical cylinder 51 and preventing the wastewater from passing through the conical cylinder 51 and falling down, so that the wastewater is located inside the settling tank 1. After the wastewater has settled, the piston 53 is lowered to below the filter tube 52. Under the action of the conical cylinder 51, the sediment gathers in the middle filter tube 52. The settled wastewater passes through the filter tube 52, and the sediment remains inside the filter tube 52, achieving the purpose of solid-liquid separation and facilitating the recovery of the sediment.

[0027] like Figure 2 and Figure 4As shown, a discharge tank 10 is fixedly connected to the lower surface of the settling tank 1, and the settling tank 1 and the discharge tank 10 are in communication. A bracket 11 is fixedly connected to the lower surface of the discharge tank 10. The bracket 11 and the discharge tank 10 are provided with opposing circular through grooves. A vertical pipe 12 is fixedly connected to the side wall of the circular through groove on the discharge tank 10. The vertical pipe 12 is fixedly connected to the filter pipe 52. The radius of the vertical pipe 12 is larger than the radius of the filter pipe 52. The lower surface of the discharge tank 10 is connected to the discharge pipe 13, which passes through the bracket 11. A support plate 14 is fixedly connected to the inner wall of the vertical pipe 12. A placement cylinder 15 is fixedly connected to the support plate 14. A sliding rod 16 is slidably connected inside the placement cylinder 15. A spring 17 is fixedly connected between the sliding rod 16 and the placement cylinder 15. Rod 16 is fixedly connected to piston 53. When it is necessary to discharge the treated wastewater to separate solids and liquids, servo motor 8 drives gear 9 to lower sliding tube 41 and rotating rod 44. Rotating rod 44 presses down piston 53, causing piston 53 to descend into filter tube 52. Spring 17 is compressed, and the treated wastewater passes through filter tube 52 and enters discharge tank 10 below. It is then discharged through discharge pipe 13 for reuse. Meanwhile, sediment in filter tube 52 continues to descend, causing piston 53 to leave filter tube 52. The upper surface of piston 53 is arc-shaped. The sediment passes through filter tube 52 and placement cylinder 15, and can be collected from below bracket 11 for recycling.

[0028] like Figure 3 As shown, multiple second support rods 18 are fixedly connected to the outer side of the rotating rod 44. One end of the second support rod 18 is fixedly connected to an elastic scraper 19. When the rotating rod 44 pushes the piston 53 into the filter tube 52, the wastewater passes through the filter tube 52 and is discharged. At this time, the rotating rod 44 continues to rotate, and the second support rods 18 and the elastic scraper 19 enter the filter tube 52, so that the elastic scraper 19 abuts against the side wall of the filter tube 52. The rotating rod 44 drives the elastic scraper 19 to scrape the side wall of the filter tube 52, preventing sediment from clogging the side wall of the filter tube 52 when the treated wastewater is discharged, thus preventing the wastewater from being discharged. At the same time, when the rotating rod 44 rotates and agitates the wastewater, the second support rods 18 and the elastic scraper 19 improve the stirring effect of the wastewater.

[0029] Working principle: Nickel-containing electroplating wastewater is poured into settling tank 1 through input pipe 3, followed by alkaline solution. The drive motor 43 is activated, causing the rotating rod 44 to rotate. The rotating rod 44, via the first support rod 45 and the stirring plate 46, agitates the electroplating wastewater, promoting the combination of the alkaline liquid and the wastewater. The servo motor 8 drives the gear 9, causing the sliding tube 41 to gradually rise as the rotating rod 44 agitates the liquid, moving further away from the sediment at the bottom of the settling tank 1. When it is necessary to discharge the treated wastewater to achieve solid-liquid separation, the servo motor 8 drives... Gear 9 causes the sliding tube 41 and rotating rod 44 to descend. The rotating rod 44 presses down on the piston 53, causing the piston 53 to descend into the filter tube 52. The spring 17 is compressed, and the treated wastewater passes through the filter tube 52 and enters the discharge tank 10 below. It is then discharged through the discharge pipe 13 for reuse. At this time, the sliding tube 41 and rotating rod 44 continue to descend, causing the piston 53 to leave the filter tube 52. The upper surface of the piston 53 is arc-shaped. The sediment passes through the filter tube 52 and the placement cylinder 15, and can be collected from below the bracket 11 for recycling.

[0030] The various embodiments in this specification are described in a progressive manner. Similar or identical parts between embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0031] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A sedimentation and filtration device for nickel-containing electroplating wastewater, characterized in that, The settling tank (1) is fixedly connected to a cover plate (2) on its upper surface. An input pipe (3) is provided on the cover plate (2) and the input pipe (3) passes through the cover plate (2). A lifting and stirring device (4) is provided on the cover plate (2). A filter assembly (5) is provided at the bottom of the settling tank (1).

2. The sedimentation and filtration device for nickel-containing electroplating wastewater according to claim 1, characterized in that, The lifting and stirring device (4) includes a sliding tube (41), which passes through the cover plate (2) and is slidably connected to the cover plate (2). The upper end of the sliding tube (41) is fixedly connected to the mounting box (42), and the mounting box (42) is fixedly connected to the drive motor (43). The main shaft of the drive motor (43) is fixedly connected to the rotating rod (44), which is located inside the sliding tube (41). The outer side of the rotating rod (44) is fixedly connected to the first support rod (45), and one end of the first support rod (45) is fixedly connected to the stirring plate (46).

3. The sedimentation and filtration device for nickel-containing electroplating wastewater according to claim 2, characterized in that, The upper surface of the cover plate (2) is fixedly connected to the housing (6), the sliding tube (41) and the rotating rod (44) pass through the housing (6), the outer side of the sliding tube (41) is fixedly connected to the rack (7), the side of the housing (6) is fixedly connected to the servo motor (8), the main shaft of the servo motor (8) is fixedly connected to the gear (9), and the gear (9) meshes with the rack (7).

4. The sedimentation and filtration device for nickel-containing electroplating wastewater according to claim 1, characterized in that, The filter assembly (5) includes a conical cylinder (51), which is fixedly connected to a settling tank (1). The lower surface of the settling tank (1) is open. A filter tube (52) is fixedly connected to the lower surface of the conical cylinder (51). The radius of the filter tube (52) is the same as the radius of the lower opening of the conical cylinder (51). A piston (53) is slidably connected inside the filter tube (52).

5. The sedimentation and filtration device for nickel-containing electroplating wastewater according to claim 4, characterized in that, The lower surface of the settling tank (1) is fixedly connected to the discharge tank (10), the settling tank (1) and the discharge tank (10) are connected, the lower surface of the discharge tank (10) is fixedly connected to the bracket (11), the bracket (11) and the discharge tank (10) are provided with opposing circular through grooves, the side wall of the circular through groove on the discharge tank (10) is fixedly connected to the vertical pipe (12), the vertical pipe (12) is fixedly connected to the filter pipe (52), the radius of the vertical pipe (12) is larger than the radius of the filter pipe (52), the lower surface of the discharge tank (10) is connected to the discharge pipe (13), and the discharge pipe (13) passes through the bracket (11).

6. The sedimentation and filtration device for nickel-containing electroplating wastewater according to claim 5, characterized in that, The inner wall of the vertical tube (12) is fixedly connected to a support plate (14), and a placement cylinder (15) is fixedly connected to the support plate (14). A sliding rod (16) is slidably connected inside the placement cylinder (15), and a spring (17) is fixedly connected between the sliding rod (16) and the placement cylinder (15). The sliding rod (16) is fixedly connected to the piston (53).

7. The sedimentation and filtration device for nickel-containing electroplating wastewater according to claim 2, characterized in that, Multiple second support rods (18) are fixedly connected to the outside of the rotating rod (44), and one end of the second support rod (18) is fixedly connected to an elastic scraper (19).

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