Electroplating wastewater recycling device

Abstract

The application provides a kind of electroplating wastewater recovery processing device, belongs to wastewater treatment technical field, including pedestal, the top central position of the pedestal is provided with flocculation sedimentation tank, and the outer wall of one side of pedestal is symmetrically provided with two electric push rods one, the outer wall of another side of pedestal is symmetrically provided with two electric push rods two, two the output end of electric push rod one is fixedly connected with push silt platform one on its one side, two the output end of electric push rod two is fixedly connected with push silt platform two on its one side, the outer wall of one side of push silt platform one towards push silt platform two is provided with fitting part;The application can separate the sediment and water in the flocculation sedimentation tank by the mutual cooperation of flocculation sedimentation tank, box body separation assembly and liquid pumping assembly, so that the sediment can be discharged alone, and the water on the upper layer of sediment can be pumped out maximally under the lifting floating type liquid pumping, and then the water can be avoided to be discharged together when the sediment is discharged.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, and specifically relates to an electroplating wastewater recycling and treatment device. Background Technology

[0002] Currently, the wastewater and waste liquid discharged by electroplating plants contain a large number of metal ions such as chromium, cadmium, and nickel, as well as cyanide, acid, and alkali. Some metal ions exist in the form of simple cations, some in the form of acid anions, and some in the form of complex complex ions. In order to achieve the recycling and reuse of electroplating wastewater, the commonly used treatment methods in the treatment of electroplating wastewater include chemical methods such as neutralization precipitation, neutralization coagulation precipitation, oxidation, reduction, barium salt method, and ferrite method.

[0003] When sedimentation is used to treat wastewater, workers need to add specific flocculants to the sedimentation tank according to the type of wastewater. The flocculant combines with colloids, suspended solids, and some dissolved pollutants in the wastewater to form flocculent precipitates that settle at the bottom of the tank or container. As the sedimentation height increases, if these precipitates are not discharged in time, the sludge at the bottom of the tank or container will be disturbed by the water flow and float to the surface, causing secondary pollution. Current sediment discharge operations result in the discharge of sediment and water together, which significantly reduces treatment efficiency and may lead to secondary pollution (deterioration of effluent quality: unseparated flocs carrying suspended solids, etc.). Organic matter and adsorbed pollutants entering subsequent systems or being directly discharged can cause turbidity, COD, TP and other indicators to exceed standards; increase the burden on subsequent treatment: sediment entering the filtration unit may clog the filter media and shorten the backwashing cycle; if it enters the biological system, it may inhibit microbial activity and pose environmental risks, etc. Moreover, when the flocculant is poured into the sedimentation tank, most of the flocculant comes into contact with the top layer of water, and it is difficult to pour the flocculant evenly into the sedimentation tank. Since the flocculant is added at different depths, it will affect its mixing efficiency, reaction time and final flocculation effect, thus causing poor treatment effect of electroplating wastewater.

[0004] Therefore, an electroplating wastewater recycling and treatment device is proposed. Summary of the Invention

[0005] This invention provides an electroplating wastewater recycling and treatment device, the purpose of which is to solve the problems mentioned above.

[0006] This invention provides an electroplating wastewater recycling and treatment device, including a base. A flocculation sedimentation tank is disposed at the top center of the base. Two electric push rods (first type) are symmetrically arranged on one outer wall of the base, and two electric push rods (second type) are symmetrically arranged on the other outer wall of the base. The two electric push rods (first type) are fixedly connected to a sludge pushing platform (first type) through their output ends on one side, and the two electric push rods (second type) are fixedly connected to a sludge pushing platform (second type) through their output ends on one side. A fitting part is provided on the outer wall of the first sludge pushing platform facing the second sludge pushing platform, and an opening is provided on the outer wall of the second sludge pushing platform facing the first sludge pushing platform. The second sludge-pushing platform has a matching groove, and the interior of the second sludge-pushing platform has a conveying cavity that communicates with the matching groove. A conveying pipe is provided on the outer wall of the second sludge-pushing platform away from the first sludge-pushing platform and located on the side of the conveying cavity. A sludge discharge port is provided on the outer circumference of the conveying pipe, and a drive motor is fixedly connected to one end of the conveying pipe by bolts. A conveying screw is fixedly connected to the output end of the drive motor on one side. An outer edge cover is provided on the outer wall of the flocculation sedimentation tank near the outer side of the first sludge-pushing platform and the second sludge-pushing platform. The flocculation sedimentation tank is provided with a tank body partition assembly, a liquid extraction assembly, and a flocculant dosing assembly. The box-type partition assembly includes several rotating partition plates axially and equally spaced inside the flocculation sedimentation tank. Each rotating partition plate has a lower slot on its top side wall and an upper slot on its bottom side wall. Two rotating columns are symmetrically arranged on the outer wall of each rotating partition plate, and these columns movably penetrate the flocculation sedimentation tank. A gear is located at one end of each rotating column near the outer side of the flocculation sedimentation tank. A guide platform is located on the outer wall of the flocculation sedimentation tank below the gear. An electric push rod is located on one side of the guide platform, and a toothed plate is fixedly connected to the electric push rod via its output end. The toothed plate meshes with the gear.

[0007] Furthermore, the liquid extraction assembly includes a fixed partition plate disposed on the inner wall of the flocculation sedimentation tank near the two rotating partition plates. The bottom of the fixed partition plate near one side wall has an upper slot 2, and the top of the fixed partition plate near one side wall has a lower slot 2. The top of the flocculation sedimentation tank is provided with a fixed plate. A circular tube is disposed between the fixed plate and the fixed partition plate. A floating plate is movably disposed inside the circular tube. A liquid extraction hole is opened at the center of the bottom of the floating plate, and a liquid extraction pipe is disposed at the top of the floating plate near the outer side of the liquid extraction hole. A liquid extraction pump is disposed at the top of the fixed plate near the outer side of the circular tube. A corrugated telescopic tube is disposed at the input end of the liquid extraction pump, and one end of the corrugated telescopic tube is connected to the liquid extraction pipe.

[0008] Furthermore, the flocculant dosing assembly includes an upper support plate located at the top of the flocculation sedimentation tank. A rotating sleeve is movably rotatable on the top of the upper support plate. Several dosing holes are equally spaced on the outer circumferential surface of the rotating sleeve in the axial direction. A stirring rod is disposed on the outer circumferential surface of the rotating sleeve at a staggered position relative to the dosing holes. A gear two is disposed on the outer circumferential surface of the rotating sleeve near the upper support plate. A bracket is disposed on the top of the upper support plate near one side of the rotating sleeve. A servo motor is disposed at the center of the top of the bracket. A gear three is fixedly connected to the servo motor through its output end on one side. The gear three meshes with the gear two.

[0009] Furthermore, a lower support plate is provided on one inner wall of the flocculation sedimentation tank, located directly below the upper support plate. A waterproof cylinder is provided at the bottom of the lower support plate. A movable column is fixedly connected to the waterproof cylinder through its output end on one side. Eight connecting rods are provided at equal intervals around the top of the movable column near its outer circumference. Movable sleeves are provided at the top of the eight connecting rods.

[0010] Furthermore, the outer edge cover and the flocculation sedimentation tank are connected, and the inner sidewalls of the two outer edge covers and the flocculation sedimentation tank are dynamically sealed to the outer sidewalls of the first and second sludge pushing platforms, respectively. By adopting the above technical solution, two outer covers can be used to seal the first and second sludge pushing platforms, ensuring the airtightness of the movement of the first and second sludge pushing platforms inside the outer covers and the flocculation sedimentation tank, and using dynamic sealing to prevent wastewater from leaking out of the flocculation sedimentation tank.

[0011] Furthermore, the lower slot one and the upper slot two are engaged in a locking fit, and the upper slot one and the lower slot two are engaged in a locking fit. After rotation, the several rotating partition plates form a plate-like structure with the fixed partition plate to separate the internal space of the flocculation sedimentation tank. By adopting the above technical solution, adjacent rotating partition plates can be combined by snap-fit. By combining several rotating partition plates together, a plate-like structure can be formed, thereby separating the internal space of the flocculation sedimentation tank, thus separating the water and sediment in the flocculation sedimentation tank, and facilitating the separate discharge of sediment.

[0012] Furthermore, the inner circumferential surface of the rotating sleeve matches and fits with the outer circumferential surface of the movable column and the movable sleeve; By adopting the above technical solution, the sealing performance of the movable column and the movable sleeve during relative movement inside the rotating sleeve is ensured, the stability of the flocculant inside the rotating sleeve is guaranteed, and the uncontrollable discharge of the flocculant at different vertical heights is avoided.

[0013] Furthermore, a groove communicating with the conveying cavity is provided at the center of the inner sidewall of the fitting groove, and the cross-section of the fitting groove is an isosceles trapezoid. By adopting the above technical solution and utilizing the interconnected groove design, the sediment inside the fitting groove can pass through the groove and enter the conveying chamber, thereby discharging the sediment from the flocculation sedimentation tank. This avoids excessive sediment at the bottom of the flocculation sedimentation tank causing disturbance and floating, resulting in secondary pollution. Furthermore, the isosceles trapezoidal design can guide the sediment, directing it towards the groove.

[0014] The beneficial effects of this invention are as follows: 1. This invention, through the cooperation of a flocculation sedimentation tank, a tank partition component, and a liquid extraction component, can separate the sediment and water inside the flocculation sedimentation tank, facilitating the separate discharge of sediment. Furthermore, the floating liquid extraction method maximizes the extraction of water from the upper layer of sediment, preventing water from being discharged along with the sediment. This improves wastewater treatment efficiency while avoiding secondary pollution. The intermittent partitioning-liquid extraction-sludge removal operation ensures that the flocculation sedimentation process and the sediment discharge process do not interfere with each other, significantly improving wastewater recycling and treatment efficiency.

[0015] 2. By controlling the misalignment of the connecting rod between the movable column and the movable sleeve with the dosing hole on the rotating sleeve, the dosing depth of the flocculant can be changed. This allows for real-time control of the flocculant dosage at different water depths based on the wastewater flow rate. Furthermore, under centrifugal stirring, the uniformity of flocculant dosing is greatly improved, enhancing the flocculation effect and thus improving the wastewater treatment efficiency.

[0016] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention; Figure 2 This is a cross-sectional three-dimensional schematic diagram of an embodiment of the present invention; Figure 3 This is an embodiment of the present invention. Figure 1 Enlarged diagram of point A in the diagram; Figure 4 This is an embodiment of the present invention. Figure 2 Enlarged diagram of point B in the diagram; Figure 5This is a schematic diagram of the cooperation between the first and second silt-pushing platforms according to an embodiment of the present invention; Figure 6 This is a schematic diagram of the rotating partition plate structure according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the liquid extraction assembly structure according to an embodiment of the present invention; Figure 8 This is a schematic diagram of the flocculant dosing component structure according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the movable column structure according to an embodiment of the present invention; Reference numerals: 1. Base; 11. Electric push rod one; 12. Electric push rod two; 2. Flocculation sedimentation tank; 21. Outer edge cover; 3. Pushing platform one; 31. Fitting part; 4. Pushing platform two; 41. Fitting groove; 42. Conveying chamber; 43. Conveying pipe; 431. Sludge discharge port; 44. Drive motor; 45. Conveying screw; 5. Box body partition assembly; 51. Rotating partition plate; 511. Lower slot one; 512. Upper slot one; 52. Rotating column; 53. Gear one; 54. Guide platform; 55. Electric push rod three; 56. Gear plate; 6. Liquid extraction assembly 61. Fixed partition plate; 611. Upper slot two; 612. Lower slot two; 62. Fixed plate; 63. Round tube; 64. Floating disc; 641. Liquid extraction hole; 65. Liquid extraction pipe; 66. Liquid extraction pump; 67. Corrugated telescopic pipe; 7. Flocculant dosing assembly; 71. Upper support plate; 72. Lower support plate; 73. Rotating sleeve; 731. Dosing hole; 732. Stirring rod; 733. Gear two; 74. Bracket; 741. Servo motor; 742. Gear three; 75. Waterproof cylinder; 76. Movable column; 77. Connecting rod; 78. Movable sleeve. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The same reference numerals in the drawings represent the same components. It should be noted that the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] Example 1 Reference Figure 1-7This invention provides an electroplating wastewater recycling and treatment device, comprising a base 1, a flocculation sedimentation tank 2 located at the top center of the base 1, two electric push rods 11 symmetrically arranged on one side of the outer wall of the base 1, and two electric push rods 12 symmetrically arranged on the other side of the outer wall of the base 1. The two electric push rods 11 are fixedly connected to a sludge pushing platform 3 via their output ends, and the two electric push rods 12 are fixedly connected to a sludge pushing platform 4 via their output ends. An outer edge cover 21 is connected to the flocculation sedimentation tank 2, and the two outer edge covers 21 are connected to the flocculation sedimentation tank 2. The inner wall of the sedimentation tank 2 is dynamically sealed to the outer walls of the first and second sludge-pushing platforms 3 and 4, respectively. Two outer edge covers 21 can seal the first and second sludge-pushing platforms 3 and 4, ensuring the sealing of their movement within the outer edge covers 21 and the flocculation sedimentation tank 2. This dynamic seal also prevents wastewater leakage from the flocculation sedimentation tank 2. The outer wall of the first sludge-pushing platform 3 facing the second sludge-pushing platform 4 has a fitting part 31, and the outer wall of the second sludge-pushing platform 4 facing the first sludge-pushing platform 3 has a fitting groove 41. The inner wall of the fitting groove 41... A groove communicating with the conveying chamber 42 is provided at the central position, and the cross-section of the fitting groove 41 is an isosceles trapezoid. Utilizing the connected groove design, sediment inside the fitting groove 41 can pass through the groove and enter the conveying chamber 42, thereby discharging the sediment from the flocculation sedimentation tank 2. This prevents excessive sediment at the bottom of the flocculation sedimentation tank 2 from causing disturbance and floating, resulting in secondary pollution. The isosceles trapezoidal design also guides the sediment, directing it towards the groove. The push platform 4 has a conveying chamber 42 communicating with the fitting groove 41 inside. On the outer wall of the second siltation platform 4 away from the first siltation platform 3 and located on the side of the conveying chamber 42, a conveying pipe 43 is provided. A silt discharge port 431 is opened on the outer circumference of the conveying pipe 43, and a drive motor 44 is fixedly connected to one end of the conveying pipe 43 by bolts. A conveying screw 45 is fixedly connected to the output end of the drive motor 44 on one side. An outer edge cover 21 is provided on the outer wall of the flocculation sedimentation tank 2 near the outer side of the first siltation platform 3 and the second siltation platform 4. The flocculation sedimentation tank 2 is provided with a tank body partition assembly 5, a liquid extraction assembly 6 and a flocculant dispensing assembly 7. The box body partition assembly 5 includes several rotating partition plates 51 axially and equally spaced inside the flocculation sedimentation box 2. The top of the rotating partition plate 51 is provided with a lower slot 511 near one side wall, and the bottom of the rotating partition plate 51 is provided with an upper slot 512 near one side wall. Two rotating columns 52 are symmetrically arranged on the outer side wall of the rotating partition plate 51. The rotating columns 52 move through the flocculation sedimentation box 2. A gear 53 is provided at one end of the rotating column 52 near the outer side of the flocculation sedimentation box 2. A guide platform 54 is provided on the outer side wall of the flocculation sedimentation box 2 near the lower part of the gear 53. An electric push rod 55 is provided on one side of the outer wall of the guide platform 54. The electric push rod 55 is fixedly connected to a toothed plate 56 through its output end. The toothed plate 56 and the gear 53 mesh with each other. The liquid extraction assembly 6 includes a fixed partition plate 61 located on the inner wall of the flocculation sedimentation tank 2, near the space between two rotating partition plates 51. The bottom of the fixed partition plate 61, near one side wall, has an upper locking groove 611, and the top of the fixed partition plate 61, near one side wall, has a lower locking groove 612. The lower locking groove 511 and the upper locking groove 611 engage with each other, as do the upper locking groove 512 and the lower locking groove 612. After rotating 90 degrees, the rotating partition plates 51, together with the fixed partition plate 61, form a plate-like structure that separates the internal space of the flocculation sedimentation tank 2. The engaging mechanism allows adjacent rotating partition plates 51 to be combined, and by combining several rotating partition plates 51, a plate-like structure is formed, thereby separating the flocculation sedimentation tank. The internal space of the flocculation sedimentation tank 2 is divided to separate the water and sediment in the flocculation sedimentation tank 2, so as to facilitate the separate discharge of sediment. A fixed plate 62 is provided on the top of the flocculation sedimentation tank 2. A circular tube 63 is provided between the fixed plate 62 and the fixed partition plate 61. A floating plate 64 is movably installed inside the circular tube 63. A liquid extraction hole 641 is opened at the bottom center of the floating plate 64. A filter screen is provided on the inner side wall of the liquid extraction hole 641. A liquid extraction pipe 65 is provided on the top of the floating plate 64 near the outer side of the liquid extraction hole 641. A liquid extraction pump 66 is provided on the top of the fixed plate 62 near the outer side of the circular tube 63. A corrugated telescopic pipe 67 is provided at the input end of the liquid extraction pump 66. One end of the corrugated telescopic pipe 67 and the liquid extraction pipe 65 are connected. To prevent wastewater from being discharged along with the flocculated sediment, in this embodiment, the sediment and water inside the flocculation sedimentation tank 2 are separated through the cooperation of the tank body partition component 5 and the pumping component 6. This facilitates the separate discharge of sediment and maximizes the extraction of water from the upper layer of sediment using a floating pumping method. This prevents water from being discharged along with the sediment, improving wastewater treatment efficiency while avoiding secondary pollution. The intermittent partitioning-pumping-draining operation ensures that the flocculation sedimentation process and sediment discharge process do not interfere with each other, significantly improving wastewater recycling efficiency. Specifically, after electroplating wastewater flows into the flocculation sedimentation tank 2, flocculant is added inside. As the flocculation operation proceeds, the flocculated sediment... The agent combines with colloids, suspended solids, and some dissolved pollutants in the electroplating wastewater to form flocculent precipitates that settle at the bottom of the flocculation sedimentation tank 2. After sedimentation for a period of time, the electric push rod 55 drives the toothed plate 56 to slide linearly on the top of the guide table 54 through its output end on one side. Through the meshing transmission between the toothed plate 56 and the gear 53, the toothed plate 56 pulls the gear 53 to rotate. As the gear 53 rotates, it pulls the rotating column 52 and the rotating partition plate 51 to rotate. The rotating partition plate 51 is controlled to rotate 90 degrees, changing from a vertical state to a horizontal state. At this time, the lower slot 511 and the upper slot 611 are engaged, and the upper slot 512 and the lower slot 612 are engaged. With the cooperation of the fixed partition plate 61, several rotating partition plates 51, after rotating 90 degrees, form a plate-like structure with the fixed partition plate 61 to separate the internal space of the flocculation sedimentation tank 2. The sediment is located below the plate-like structure, and the wastewater is located above the plate-like structure. Under the buoyancy of the floating plate 64, the floating plate 64 is always above the water surface, controlling the operation of the pump 66. Under the pumping action, the water below the floating plate 64 flows from bottom to top along the suction hole 641 and the suction pipe 65, and is discharged from the output end of the pump 66 after passing through the corrugated expansion pipe 67. The discharged water flows back into the interior of the flocculation sedimentation tank 2. As the water below the plate-like structure is continuously pumped out through the circular pipe 63, and as the liquid level drops, the floating plate 64 moves vertically along the circular pipe 63. Moving downwards, the water beneath the plate-like structure is continuously discharged, significantly reducing the water content in the sediment. After the sediment drainage operation is completed, electric push rod 11 and electric push rod 22 are controlled to work synchronously. Electric push rod 11 pushes the silt-pushing platform 3 to move through its output end on one side, and electric push rod 22 pushes the silt-pushing platform 4 to move through its output end on one side. The silt-pushing platforms 3 and 4 move towards each other. During their movement, the silt-pushing platforms 3 and 4 not only compress the sediment beneath the plate-like structure but also support the plate-like structure, ensuring its stability. As the sediment is continuously compressed, it is squeezed into the conveying chamber 42, and the drive motor 44 is controlled to drive the conveying screw 45 to rotate through its output end on one side. As the conveying screw 45 rotates...The conveying screw 45 transports the sediment and discharges it through the discharge port 431. During the discharge operation, flocculation and sedimentation continue above the plate-like structure inside the flocculation sedimentation tank 2. After the discharge operation is completed, the rotating partition plate 51 is reset, and the sediment above the rotating partition plate 51 falls to the bottom of the flocculation sedimentation tank 2 under gravity.

[0020] Example 2 Reference Figure 1-2 and Figure 8-9 Based on the above embodiments, this embodiment of the invention also proposes a flocculant dosing component 7. The flocculant dosing component 7 includes an upper support plate 71 disposed on the top of the flocculation sedimentation tank 2. A rotating sleeve 73 is movably rotatable on the top of the upper support plate 71. The rotating sleeve 73 is dynamically sealed to the output end of an external metering pump. A plurality of dosing holes 731 are equally spaced on the outer circumferential surface of the rotating sleeve 73 in the axial direction. A stirring rod 732 is disposed on the outer circumferential surface of the rotating sleeve 73 at a staggered position relative to the dosing holes 731. A gear 733 is disposed on the outer circumferential surface of the rotating sleeve 73 near the upper support plate 71. A bracket 74 is disposed on the top of the upper support plate 71 near the side of the rotating sleeve 73. A servo motor 741 is disposed at the center of the top of the bracket 74. The servo motor 741 is fixed through its output end on one side. Gear 3 742 is connected to gear 3 742, which meshes with gear 2 733. A lower support plate 72 is provided on one side of the inner wall of the flocculation sedimentation tank 2, near the lower support plate 71. A waterproof cylinder 75 is provided at the bottom of the lower support plate 72. A movable column 76 is fixedly connected to the output end of the waterproof cylinder 75. Eight connecting rods 77 are circumferentially spaced at the top of the movable column 76 near the outer circumferential surface. A movable sleeve 78 is provided at the top of the eight connecting rods 77. The inner circumferential surface of the rotating sleeve 73 matches and fits with the outer circumferential surface of the movable column 76 and the movable sleeve 78 to ensure the sealing of the movable column 76 and the movable sleeve 78 when they move relative to each other inside the rotating sleeve 73, to ensure the stability of the flocculant inside the rotating sleeve 73, and to prevent the flocculant from being discharged uncontrollably at different vertical heights. To ensure the flocculant is evenly distributed into water bodies at different depths, in this embodiment, the flocculant dosing depth can be changed by controlling the misalignment of the connecting rod 77 between the movable column 76 and the movable sleeve 78 with the dosing hole 731 on the rotating sleeve 73. This allows for real-time control of the flocculant dosage at different water depths based on the wastewater flow rate. Furthermore, centrifugal stirring significantly improves the uniformity of flocculant dosing, enhances the flocculation effect, and ultimately improves wastewater treatment efficiency. Specifically, an external flocculant dosing pump pumps a measured amount of flocculant into the rotating sleeve 73. Simultaneously, the waterproof cylinder 75, through its output end, drives the movable column 76, connecting rod 77, and movable sleeve 78 to rise and fall along the interior of the rotating sleeve 73. The synchronous movement of 7 and movable sleeve 78 causes a change in position between connecting rod 77 and dosing hole 731 on rotating sleeve 73. This controls and adjusts the position of connecting rod 77, allowing flocculant to be discharged from dosing hole 731 on one side of connecting rod 77, thus enabling the addition of flocculant at different water heights. The servo motor 741 drives gear 3 742 to rotate at high speed through its output end. Through the meshing transmission between gear 3 742 and gear 2 733, gear 3 742 pulls gear 2 733 to rotate. At this time, rotating sleeve 73 rotates, and stirring rod 732 on rotating sleeve 73 moves synchronously circumferentially. While stirring rod 732 stirs the water, flocculant is thrown out and mixed with the water.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A device for recycling and treating electroplating wastewater, characterized in that: The system includes a base (1), a flocculation sedimentation tank (2) is provided at the top center of the base (1), and two electric push rods (11) are symmetrically arranged on one side of the outer wall of the base (1), and two electric push rods (12) are symmetrically arranged on the other side of the outer wall of the base (1). The two electric push rods (11) are fixedly connected to a sludge pushing platform (3) through their output ends on one side, and the two electric push rods (12) are fixedly connected to a sludge pushing platform (4) through their output ends on one side. A fitting part (31) is provided on the outer wall of the sludge pushing platform (3) facing the sludge pushing platform (4), and a fitting groove (41) is opened on the outer wall of the sludge pushing platform (4) facing the sludge pushing platform (3). The interior of the sludge pushing platform (4) is provided with a fitting part (31) for fitting the sludge pushing platform (3). The conveying chamber (42) is connected to the fitting groove (41). A conveying pipe (43) is provided on the outer wall of the second pushing platform (4) away from the first pushing platform (3) and located on the side of the conveying chamber (42). A discharge port (431) is opened on the outer circumference of the conveying pipe (43). A drive motor (44) is fixedly connected to one end of the conveying pipe (43) by bolts. A conveying screw (45) is fixedly connected to the output end of the drive motor (44) on one side. An outer edge cover (21) is provided on the outer wall of the flocculation sedimentation tank (2) near the outer side of the first pushing platform (3) and the second pushing platform (4). A box body partition assembly (5), a liquid extraction assembly (6) and a flocculant dispensing assembly (7) are provided on the flocculation sedimentation tank (2). The box-type partition assembly (5) includes several rotating partition plates (51) axially spaced at equal intervals inside the flocculation sedimentation tank (2). The top of each rotating partition plate (51) has a lower slot (511) on one side wall, and the bottom of each rotating partition plate (51) has an upper slot (512) on one side wall. Two rotating columns (52) are symmetrically arranged on the outer side wall of each rotating partition plate (51), and the rotating columns (52) move through the flocculation sedimentation tank (2). A gear (53) is provided at one end of the rotating column (52) near the outside of the flocculation sedimentation tank (2). A guide platform (54) is provided on the outer wall of the flocculation sedimentation tank (2) near the lower part of the gear (53). An electric push rod (55) is provided on one side of the outer wall of the guide platform (54). A toothed plate (56) is fixedly connected to the electric push rod (55) through its output end. The toothed plate (56) and the gear (53) mesh with each other.

2. The electroplating wastewater recycling and treatment device according to claim 1, characterized in that: The liquid extraction assembly (6) includes a fixed partition plate (61) located on the inner wall of the flocculation sedimentation tank (2) near the two rotating partition plates (51). The bottom of the fixed partition plate (61) has an upper slot (611) near one side wall, and the top of the fixed partition plate (61) has a lower slot (612) near one side wall. A fixed plate (62) is located on the top of the flocculation sedimentation tank (2). A circular tube (63) is positioned between the fixed plate (62) and the fixed partition plate (61). The circular tube (63) is equipped with a floating disk (64) inside. A liquid extraction hole (641) is provided at the center of the bottom of the floating disk (64), and a liquid extraction pipe (65) is provided at the top of the floating disk (64) near the outer side of the liquid extraction hole (641). A liquid extraction pump (66) is provided at the top of the fixed plate (62) near the outer side of the circular tube (63). A corrugated telescopic pipe (67) is provided at the input end of the liquid extraction pump (66), and one end of the corrugated telescopic pipe (67) and the liquid extraction pipe (65) are connected.

3. The electroplating wastewater recycling and treatment device according to claim 1, characterized in that: The flocculant dosing assembly (7) includes an upper support plate (71) located on the top of the flocculation sedimentation tank (2). A rotating sleeve (73) is movably rotated on the top of the upper support plate (71). Several dosing holes (731) are equally spaced on the outer circumferential surface of the rotating sleeve (73) in the axial direction. A stirring rod (732) is provided on the outer circumferential surface of the rotating sleeve (73) at a staggered position relative to the dosing holes (731). A gear two (733) is provided on the outer circumferential surface of the rotating sleeve (73) near the upper support plate (71). A bracket (74) is provided on the top of the upper support plate (71) near the side of the rotating sleeve (73). A servo motor (741) is provided at the center of the top of the bracket (74). A gear three (742) is fixedly connected to the output end of the servo motor (741) on one side. The gear three (742) meshes with the gear two (733).

4. The electroplating wastewater recycling and treatment device according to claim 3, characterized in that: A lower support plate (72) is provided on one side of the inner wall of the flocculation sedimentation tank (2) at a position directly below the upper support plate (71). A waterproof cylinder (75) is provided at the bottom of the lower support plate (72). A movable column (76) is fixedly connected to the output end of the waterproof cylinder (75) through one side. Eight connecting rods (77) are provided at equal intervals around the top of the movable column (76) near the outer peripheral surface. Movable sleeves (78) are provided at the top of the eight connecting rods (77).

5. The electroplating wastewater recycling and treatment device according to claim 1, characterized in that: The outer edge cover (21) and the flocculation sedimentation tank (2) are connected, and the inner sidewalls of the two outer edge covers (21) and the flocculation sedimentation tank (2) are dynamically sealed to the outer sidewalls of the first sludge pushing platform (3) and the second sludge pushing platform (4), respectively.

6. The electroplating wastewater recycling and treatment device according to claim 2, characterized in that: The lower slot 1 (511) and the upper slot 2 (611) are engaged with each other, and the upper slot 1 (512) and the lower slot 2 (612) are engaged with each other. After rotating 90 degrees, the several rotating partition plates (51) form a plate-like structure with the fixed partition plate (61) to separate the internal space of the flocculation sedimentation tank (2).

7. The electroplating wastewater recycling and treatment device according to claim 4, characterized in that: The inner circumferential surface of the rotating sleeve (73) matches and fits with the outer circumferential surfaces of the movable column (76) and the movable sleeve (78).

8. The electroplating wastewater recycling and treatment device according to claim 1, characterized in that: The inner wall of the fitting groove (41) is provided with a groove that communicates with the conveying cavity (42) at the center position, and the cross-section of the fitting groove (41) is an isosceles trapezoid.

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