A front-end treatment device for electroplating wastewater based on heavy metal pollution

Abstract

This invention provides a front-end treatment device for electroplating wastewater contaminated with heavy metals, relating to the field of electroplating wastewater technology. The device includes a first treatment chamber, a transmission chamber, a mounting rod, a permanent magnet, a connecting rod, a second treatment chamber, a connecting pipe, and a stirring assembly. This invention uses neodymium iron boron (NdFeB) permanent magnets as the core element for heavy metal adsorption. These magnets possess extremely strong magnetic adsorption properties, rapidly adsorbing magnetic heavy metal ions such as iron, nickel, and cobalt, as well as pollutants containing magnetic components, from electroplating wastewater. Simultaneously, the permanent magnets are driven by a swing assembly to oscillate reciprocally at an angle of 30–60°. Combined with the opposite polarity of adjacent permanent magnets, a dynamically changing magnetic field environment is formed. This not only expands the magnetic field coverage but also avoids the formation of adsorption saturation regions, significantly improving the capture efficiency of heavy metal ions. The titanium alloy or polyvinyl chloride corrosion-resistant protective shell on the outer surface of the permanent magnets ensures magnetic stability and extends service life, guaranteeing long-term and efficient heavy metal separation.

Description

Technical Field

[0001] This invention relates to the field of electroplating wastewater technology, and in particular to a front-end treatment device for electroplating wastewater contaminated with heavy metals. Background Technology

[0002] Electroplating, as a crucial foundational industry in manufacturing, is widely used in machinery, electronics, automotive, aerospace, and many other fields, playing an irreplaceable role in improving product surface performance, extending service life, and enhancing decorative effects. However, the electroplating process generates large quantities of industrial wastewater containing heavy metal ions (such as chromium, nickel, copper, zinc, and cadmium). This wastewater is complex in composition, highly toxic, and heavy metals are non-degradable. If discharged directly without effective treatment, it will cause serious and lasting pollution to the ecological environment, including soil, groundwater, and surface water.

[0003] Heavy metal ions enter the human body through water infiltration and bioaccumulation in the food chain, accumulating in organs such as the liver, kidneys, and bones. This can lead to a series of health problems, including chronic poisoning, gene mutations, cancer, and birth defects, posing a significant threat to ecosystem balance and human life. Therefore, the compliant treatment of electroplating wastewater is a crucial link in the sustainable development of the electroplating industry and a key environmental protection task.

[0004] Currently, the main technologies for treating electroplating wastewater include chemical precipitation, electrolysis, membrane separation, adsorption, and biological methods. Among these, chemical precipitation is widely used in industry due to its simple operation and low cost, but it suffers from limited heavy metal removal efficiency, the generation of large amounts of sludge, and the difficulty in subsequent sludge treatment. Electrolysis and membrane separation offer good treatment results, but their high equipment investment and energy consumption make them difficult to popularize in small and medium-sized electroplating enterprises. Adsorption and biological methods are limited by factors such as the performance of adsorbents and the adaptability of microorganisms, and their treatment stability needs to be improved.

[0005] In the electroplating wastewater treatment process, front-end treatment is the foundation for subsequent advanced treatment. Its core objective is to rapidly remove most heavy metal ions and suspended particulate matter from the wastewater, reduce the load on subsequent treatment units, and improve overall treatment efficiency. Existing front-end treatment devices generally suffer from the following shortcomings: First, the heavy metal separation efficiency is low, relying heavily on single chemical reactions or physical adsorption, making it difficult to quickly achieve efficient enrichment and separation of heavy metal ions; second, the wastewater pretreatment effect is poor, with suspended impurities in the wastewater easily clogging subsequent treatment equipment and affecting continuous system operation; third, uneven mixing of reagents and wastewater leads to incomplete chemical reactions, reducing treatment efficiency and wasting reagents; fourth, the equipment's corrosion resistance is insufficient, and prolonged contact with corrosive wastewater containing heavy metals easily leads to shell corrosion, component damage, and other problems, shortening equipment lifespan and increasing maintenance costs.

[0006] Furthermore, some front-end treatment devices are complex in structure, cumbersome in operation, and have a low degree of automation, requiring a large amount of manpower for monitoring and maintenance, making them difficult to meet the high-efficiency and intelligent demands of modern industrial production. Therefore, developing a front-end treatment device for electroplating wastewater that is structurally sound, has high heavy metal removal efficiency, operates stably, and is easy to maintain is of great practical significance for improving the treatment effect of electroplating wastewater, reducing treatment costs, and promoting the green transformation of the electroplating industry. Summary of the Invention

[0007] The purpose of this invention is to solve the above-mentioned problems by providing a front-end treatment device for electroplating wastewater based on heavy metal pollution.

[0008] To address the aforementioned problems, this invention provides a technical solution: a front-end treatment device for electroplating wastewater contaminated with heavy metals, comprising a first treatment chamber, a transmission chamber, a swing assembly, a mounting rod, permanent magnets, connecting rods, a second treatment chamber, a connecting pipe, and a stirring assembly; the transmission chamber is fixedly connected to the upper end of the first treatment chamber; the mounting rod is fixedly connected to the transmission chamber; the swing assembly is also provided in the transmission chamber; permanent magnets are hinged to both sides of the lower end of the mounting rod, and connecting rods are hinged to the permanent magnets, with the other end of the connecting rods hinged to the swing assembly; the first treatment chamber and the second treatment chamber are connected together by a connecting pipe; the stirring assembly is provided in the second treatment chamber.

[0009] Preferably, the system also includes an inlet pipe, a screen, a dispensing port, a drain valve, and a cleaning assembly; the first treatment chamber is provided with an inlet pipe; the upper end of the second treatment chamber is fixedly connected to a dispensing port, and the lower end of the second treatment chamber is fixedly connected to a drain valve; a screen is provided in the connecting pipe; and a cleaning assembly is also connected to the connecting pipe.

[0010] Preferably, the swing assembly includes a bearing housing, a slide rail, a mounting plate, a screw, a bearing, a bushing, a slider, and a transmission assembly; bearing housings are fixedly connected to both sides of the bottom surface of the transmission chamber; slide rails are fixedly connected to the left and right side walls of the transmission chamber; a mounting plate is fixedly connected to the upper end of the transmission chamber; a screw is movably connected to the bearing housing, the upper end of the screw is movably connected to the mounting plate via a bearing, and a transmission assembly is connected between the top ends of the screw; a mounting rod is fixedly connected to the middle of the lower surface of the mounting plate; a slider is threaded onto the screw, and sliders are fixedly connected to each slider, which is slidably connected to the slide rail; the upper end of the connecting rod is hinged to the corresponding slider.

[0011] Preferably, the transmission assembly includes a first bevel gear, a first mounting block, a first transmission rod, a second bevel gear, a first motor, a first gear, and a second gear; the top of the screw is fixedly connected to the first bevel gear; the top two ends of the mounting plate are fixedly connected to the first mounting blocks, and the first transmission rod is movably connected between the first mounting blocks via bearings; the top two ends of the first transmission rod are fixedly connected to the second bevel gear, and the second bevel gear meshes with the first bevel gear; the middle end of the first transmission rod is fixedly connected to the second gear; the top of the transmission chamber is fixedly connected to the first motor, and the output end of the first motor is fixedly connected to the first gear, and the first gear meshes with the second gear.

[0012] Preferably, the stirring assembly includes an upper rotating rod, a lower rotating rod, an upper driving bevel gear, a lower driving bevel gear, a driven bevel gear, a first rotating shaft, stirring rods, and a synchronous transmission assembly; the upper rotating rod is movably connected to the upper end of the second processing chamber via a bearing, and the upper driving bevel gear is fixedly connected to the lower end of the upper rotating rod; the lower rotating rod is movably connected to the lower end of the second processing chamber via a bearing, and the lower driving bevel gear is fixedly connected to the upper end of the lower rotating rod; a synchronous transmission assembly is provided between the outer ends of the upper and lower rotating rods for driving transmission; several driven bevel gears are meshed between the upper and lower driving bevel gears; a first rotating shaft is fixedly connected to the side of each driven bevel gear, and several stirring rods are fixedly connected to each first rotating shaft.

[0013] Preferably, the synchronous transmission assembly includes a second motor, a third gear, a fourth gear, a second mounting block, a second transmission rod, a third bevel gear, a third mounting block, a third transmission rod, a fourth bevel gear, a fifth bevel gear, a sixth bevel gear, and a transmission rod protection chamber; the transmission rod protection chamber is fixedly connected to the outer side of the second processing chamber; third mounting blocks are fixedly connected to the upper and lower surfaces of the second processing chamber at intervals, and the third transmission rod is movably connected between the third mounting blocks via bearings; a fifth bevel gear is fixedly connected to the left side of each of the third transmission rods, and a fourth bevel gear is fixedly connected to the right side of each of the third transmission rods; the outer sides of the upper and lower rotating rods... A sixth bevel tooth is fixedly connected to each side end, and the sixth bevel tooth meshes with the corresponding fifth bevel tooth; a second mounting block is fixedly connected to the right side of the second processing chamber at intervals, and a second transmission rod is movably connected between the second mounting blocks through bearings; a third bevel tooth is fixedly connected to both ends of the second transmission rod, and the third bevel tooth meshes with the corresponding fourth bevel tooth; a fourth gear is fixedly connected to the middle end of the second transmission rod; the second motor is fixedly connected to the right side of the second processing chamber, and a third gear is fixedly connected to the output end of the second motor, and the third gear meshes with the fourth gear.

[0014] Preferably, the cleaning assembly includes a second rotating shaft, an impeller, a protective cover, a seventh bevel gear, a drive shaft, an eighth bevel gear, a rotating plate, and a brush assembly. The second rotating shaft is movably connected to the inside of the connecting pipe via bearings, and an impeller is fixedly connected to the second rotating shaft. Seventh bevel gears are fixedly connected to both ends of the second rotating shaft. Drive shafts are provided at both the upper and lower ends of the connecting pipe, and the drive shafts are movably connected to the right side wall of the first processing chamber via bearings. A rotating plate is fixedly connected to the left end of each drive shaft. Brush assemblies are connected to both ends of the right side of each rotating plate. An eighth bevel gear is fixedly connected to the right end of each drive shaft, and the eighth bevel gear meshes with the corresponding seventh bevel gear. Protective covers for protecting the seventh and eighth bevel gears are fixedly connected to the upper and lower surfaces of the connecting pipe.

[0015] Preferably, the brush assembly includes a brush body, connecting rods, limiting blocks, and springs; the brush body is slidably connected to the rotating plate; two mutually spaced connecting rods are fixedly connected to the left side of the brush body, and the connecting rods are also slidably connected to the rotating plate; the outer surface of the connecting rods located inside the rotating plate is covered with springs; and limiting blocks are fixedly connected to the left side of each connecting rod.

[0016] Preferably, the inner walls of both the first and second processing chambers are coated with an anti-corrosion coating, which is a polytetrafluoroethylene coating or an epoxy resin coating, with a coating thickness of 0.5 to 1.5 mm; the shells of the first and second processing chambers are made of stainless steel with a shell thickness of 3 to 8 mm.

[0017] Preferably, the permanent magnet is a neodymium iron boron permanent magnet, and the outer surface of the permanent magnet is covered with an anti-corrosion protective shell, which is made of titanium alloy or polyvinyl chloride; the swing angle range of the permanent magnet is 30 to 60°, and the polarities of two adjacent permanent magnets are set opposite.

[0018] The beneficial effects of this invention are as follows: (1) High efficiency in heavy metal separation and significant enrichment effect: This invention uses neodymium iron boron permanent magnets as the core element for heavy metal adsorption. It has extremely strong magnetic adsorption performance and can quickly adsorb magnetic heavy metal ions such as iron, nickel, and cobalt, as well as pollutants containing magnetic components in electroplating wastewater. At the same time, the permanent magnets are driven to swing back and forth at an angle of 30 to 60° by the swing assembly. With the adjacent permanent magnets set with opposite polarities, a dynamically changing magnetic field environment is formed, which not only expands the magnetic field coverage area but also avoids the formation of adsorption saturation areas, thus greatly improving the capture efficiency of heavy metal ions. The titanium alloy or polyvinyl chloride anti-corrosion protective shell on the outer surface of the permanent magnets not only ensures magnetic stability but also extends service life, ensuring long-term and efficient heavy metal separation effect.

[0019] (2) Combining pretreatment and anti-clogging to ensure continuous system operation: The screen installed in the connecting pipe can effectively intercept suspended particulate matter, waste residue and other impurities in the wastewater, avoiding blockage of the internal pipes and components of the subsequent treatment unit; while the matching cleaning component uses the flow of wastewater to drive the impeller to rotate, and drives the drive shaft and rotating plate to rotate through the bevel gear transmission, so that the brush assembly can clean the surface of the screen in real time. The spring structure in the brush assembly can realize the elastic extension and contraction of the brush body, ensuring that it fits tightly with the screen during the cleaning process, cleaning thoroughly, and avoiding damage to the components caused by hard contact. The screen can be self-cleaned without additional power, ensuring the smooth flow of wastewater and improving the stability of continuous operation of the device.

[0020] (3) Thorough and uniform mixing improves chemical reaction efficiency: The stirring assembly in the second treatment chamber adopts a transmission structure with upper and lower double active bevel gears and multiple driven bevel gears, driving multiple sets of stirring rods to rotate synchronously at different positions and heights, forming a three-dimensional stirring effect. This ensures that the reagents and wastewater are fully mixed and in contact, avoiding the problem of excessively high local reagent concentrations or insufficient reactions. This significantly improves the chemical reaction rate and completeness of heavy metal ions with the reagents, reducing reagent waste. The synchronous conveying assembly achieves synchronous operation of the upper and lower rotating rods through a single motor drive. It has a compact structure, high transmission efficiency, and reduces equipment energy consumption and maintenance costs.

[0021] (4) Excellent corrosion resistance, extending equipment service life: The shells of the first and second treatment chambers are made of stainless steel with a wall thickness of 3-8mm, combining high strength and corrosion resistance; the inner walls are coated with a 0.5-1.5mm thick polytetrafluoroethylene coating or epoxy resin coating. This type of coating has extremely strong resistance to acid and alkali and heavy metal corrosion, which can effectively isolate the shell from corrosive wastewater and prevent the equipment from rusting and being damaged. At the same time, all transmission components are sealed by bearings, and key gears, bevel gears and other components are isolated and protected by protective covers, further improving the overall corrosion resistance of the equipment, extending the service life of the equipment, and reducing long-term operating costs.

[0022] (5) Reasonable structural design and convenient operation and maintenance: The device adopts a modular design, with clear division of labor and compact connection of each functional component, resulting in a stable and reliable overall structure. The layout of the inlet pipe, discharge port, and drain valve conforms to the operating habits of the wastewater treatment process, facilitating wastewater input, chemical addition, and wastewater discharge after treatment. The connection method between each component facilitates disassembly and maintenance, reducing the difficulty of maintenance. The control method of the device is simple, with the core functional components driven by a motor, eliminating the need for complex manual operation and meeting the high-efficiency requirements of industrial production.

[0023] (6) Wide range of applications and strong compatibility: This invention can be used for front-end treatment of electroplating heavy metal wastewater of different concentrations and types. By combining magnetic adsorption and chemical precipitation, it can efficiently remove magnetic heavy metal ions and also treat non-magnetic heavy metal ions with subsequent reagents, thus meeting the diverse wastewater treatment needs of the electroplating industry. At the same time, the structural parameters of the device can be flexibly adjusted according to the actual treatment volume, making it suitable for large-scale treatment scenarios of small and medium-sized electroplating enterprises and having broad application prospects.

[0024] (7) Green and environmentally friendly, reducing the risk of secondary pollution: By efficiently removing most heavy metal ions and suspended impurities at the front end, the load of subsequent deep treatment units can be greatly reduced, and the amount of sludge generated in the overall treatment process can be reduced; the heavy metal ions adsorbed by magnetic force can be reused through subsequent magnetic separation and recycling processes, realizing the resource recovery of heavy metals, which is in line with the development concept of green environmental protection and circular economy, and reduces the risk of environmental pollution. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention.

[0026] Figure 2 This is a schematic diagram of the structure between the first processing chamber and the transmission chamber of the present invention.

[0027] Figure 3 This is a schematic diagram of the transmission component of the present invention.

[0028] Figure 4 This is a schematic diagram of the internal structure of the second processing chamber of the present invention.

[0029] Figure 5 For the present invention Figure 4 A partially enlarged structural diagram.

[0030] Figure 6 This is a schematic diagram of the cleaning component of the present invention.

[0031] Figure 7 This is a schematic diagram of the structure of the brush assembly of the present invention.

[0032] 1-First processing chamber; 2-Inlet pipe; 3-Transmission chamber; 4-Bearing seat; 5-Slide rail; 6-Mounting plate; 7-Screw; 8-Bearing; 9-Busset; 10-Slider; 11-Mounting rod; 12-Permanent magnet; 13-Connecting rod; 14-First bevel gear; 15-First mounting block; 16-First transmission rod; 17-Second bevel gear; 18-First motor; 19-First gear; 20-Second gear; 21-Second processing chamber; 22-Connecting pipe; 23-Grate; 24-Discharge port; 25-Drain valve; 26-Upper rotating rod; 27-Lower rotating rod; 28-Upper driving bevel gear; 29-Lower driving bevel gear; 30- Driven bevel gear; 31-First rotating shaft; 32-Stirring rod; 33-Second motor; 34-Third gear; 35-Fourth gear; 36-Second mounting block; 37-Second transmission rod; 38-Third bevel gear; 39-Third mounting block; 40-Third transmission rod; 41-Fourth bevel gear; 42-Fifth bevel gear; 43-Sixth bevel gear; 44-Transmission rod protection chamber; 45-Second rotating shaft; 46-Impeller; 47-Protective cover; 48-Seventh bevel gear; 49-Transmission shaft; 50-Eighth bevel gear; 51-Rotating plate; 52-Brush assembly; 53-Brush body; 54-Connecting rod; 55-Limiting block; 56-Spring. Detailed Implementation

[0033] like Figures 1 to 7 As shown, this specific embodiment adopts the following technical solution: a front-end treatment device for electroplating wastewater based on heavy metal pollution, including a first treatment chamber 1, a transmission chamber 3, a swing assembly, a mounting rod 11, a permanent magnet 12, a connecting rod 13, a second treatment chamber 21, a connecting pipe 22, and a stirring assembly; the upper end of the first treatment chamber 1 is fixedly connected to the transmission chamber 3 by bolts, forming a vertically linked treatment structure, providing a closed and stable working space for subsequent heavy metal adsorption; the middle of the transmission chamber 3 is welded and fixed to the mounting rod 11, providing stable support for the installation of the permanent magnet 12; the transmission chamber 3 is also provided with a swing assembly for driving the permanent magnet 12 to swing, through mechanical... The transmission enables dynamic adjustment of the magnetic field; both sides of the lower end of the mounting rod 11 are hinged to permanent magnets 12, which are made of neodymium iron boron and covered with a titanium alloy protective shell. Each permanent magnet 12 is hinged to a connecting rod 13, and the other end of the connecting rod 13 is hinged to the slider 10 of the swing assembly. The linear motion of the slider 10 is converted into the swing motion of the permanent magnet 12 through the transmission action of the connecting rod 13; the first treatment chamber 1 and the second treatment chamber 21 are connected by a connecting pipe 22 through a flange to ensure that the wastewater can be transported smoothly; the second treatment chamber 21 is equipped with a stirring assembly for mixing wastewater and reagents to improve the efficiency of chemical reaction.

[0034] like Figures 1 to 7As shown, it also includes an inlet pipe 2, a screen 23, a chemical outlet 24, a drain valve 25, and a cleaning assembly. The inlet pipe 2 is welded and fixed to the upper left side of the first treatment chamber 1. The inlet pipe 2 is made of stainless steel and equipped with a flow control valve to facilitate control of the wastewater inflow rate. The upper end of the second treatment chamber 21 is fixedly connected to the chemical outlet 24 via a flange. The chemical outlet 24 is equipped with a sealing cap to prevent chemical evaporation and wastewater splashing. The lower end of the second treatment chamber 21 is fixedly connected to the drain valve 25 via a flange. The drain valve 25 is a corrosion-resistant ball valve to facilitate control of the discharge of treated wastewater. A screen 23 is welded and fixed inside the connecting pipe 22. The screen 23 is made of stainless steel with a pore size of 2-5mm, which can effectively intercept suspended particles in the wastewater. A cleaning assembly for cleaning the screen 23 is also connected to the connecting pipe 22 to prevent impurities from clogging and affecting wastewater flow.

[0035] like Figures 1 to 7 As shown, the swing assembly includes a bearing seat 4, a slide rail 5, a mounting plate 6, a screw 7, a bearing 8, a bushing 9, a slider 10, and a transmission assembly. The bottom surfaces of the transmission chamber 3 are bolted to both sides of the bearing seat 4, providing bottom support for the screw 7. The left and right walls of the transmission chamber 3 are bolted to the slide rail 5, which is a linear guide rail to ensure smooth sliding of the slider 10. The upper end of the transmission chamber 3 is welded to the mounting plate 6, forming a double-layer mounting structure. The screw 7 is movably connected to the bearing seat 4 via a bearing 8. The screw 7 has precision threads on its surface, and its upper end is movably connected to the bearing 8 via a bearing. The dynamic connection is in the mounting plate 6. The bearing 8 is a deep groove ball bearing with a sealing sleeve. The top ends of the screws 7 are connected to a transmission component for synchronous drive. The mounting rod 11 is vertically welded and fixed to the middle of the lower surface of the mounting plate 6 to ensure installation stability. The screws 7 are connected to the sliders 10 by threads. The outer wall of the sliders 10 slides with the slide rail 5. Each slider 10 is welded and fixed with a reinforcing block to improve structural strength. The sliders 10 are slidably connected to the slide rail 5, and the movement direction of the sliders 10 is limited by the guiding effect of the slide rail 5. The upper end of the connecting rod 13 is hinged to the corresponding slider 10 to realize the effective transmission of force.

[0036] like Figures 1 to 7As shown, the transmission assembly includes a first bevel gear 14, a first mounting block 15, a first transmission rod 16, a second bevel gear 17, a first motor 18, a first gear 19, and a second gear 20. The top of each screw 7 is fixedly connected to a first bevel gear 14 via a flat key. The first bevel gear 14 is made of alloy steel and has undergone quenching treatment. Both ends of the upper end of the mounting plate 6 are fixedly connected to the first mounting blocks 15 via bolts. The first transmission rod 16 is movably connected between the first mounting blocks 15 via bearings 8. The first transmission rod 16 is made of stainless steel round rod, and both ends of the first transmission rod 16 are connected via flat keys. A second bevel gear 17 is fixedly connected to the key, and the second bevel gear 17 meshes with the first bevel gear 14 to achieve a 90° change in the direction of motion through bevel gear transmission; a second gear 20 is fixedly connected to the middle end of the first transmission rod 16 through a flat key; a first motor 18 is fixedly connected to the top of the transmission chamber 3 through bolts. The first motor 18 is a stepper motor and equipped with a reducer. A first gear 19 is fixedly connected to the output end of the first motor 18 through a flat key. The first gear 19 meshes with the second gear 20 to achieve a smooth transmission of power through gear transmission.

[0037] like Figures 1 to 7 As shown, the stirring assembly includes an upper rotating rod 26, a lower rotating rod 27, an upper driving bevel gear 28, a lower driving bevel gear 29, a driven bevel gear 30, a first rotating shaft 31, a stirring rod 32, and a synchronous conveying assembly. The upper rotating rod 26 is movably connected to the upper end of the second processing chamber 21 via a bearing 8. The upper rotating rod 26 is made of stainless steel and its surface is treated with anti-corrosion coating. The lower end of the upper rotating rod 26 is fixedly connected to the upper driving bevel gear 28 via a flat key. The lower rotating rod 27 is movably connected to the lower end of the second processing chamber 21 via a bearing 8. The lower rotating rod 27 is structurally symmetrical to the upper rotating rod 26. The upper end of the lower rotating rod 27 is connected to the upper rotating rod 29 via a flat key. A lower driving bevel gear 29 is fixedly connected to the key; a synchronous transmission assembly is provided between the outer ends of the upper rotating rod 26 and the lower rotating rod 27 for driving transmission, ensuring that the upper and lower rotating rods operate synchronously; several driven bevel gears 30 are meshed between the upper driving bevel gear 28 and the lower driving bevel gear 29, the driven bevel gears 30 are evenly distributed and made of alloy steel; a first rotating shaft 31 is welded and fixed to the side of each driven bevel gear 30, the first rotating shaft 31 is horizontally set, and several stirring rods 32 are welded and fixed to each first rotating shaft 31. The stirring rods 32 adopt an L-shaped structure and have anti-slip texture on the surface to improve the stirring effect.

[0038] like Figures 1 to 7As shown, the synchronous transmission assembly includes a second motor 33, a third gear 34, a fourth gear 35, a second mounting block 36, a second transmission rod 37, a third bevel gear 38, a third mounting block 39, a third transmission rod 40, a fourth bevel gear 41, a fifth bevel gear 42, a sixth bevel gear 43, and a transmission rod protection chamber 44. The transmission rod protection chamber 44 is bolted to the outer surface of the second processing chamber 21 to protect the internal transmission components from corrosion. The upper and lower surfaces of the second processing chamber 21 are bolted together with third mounting blocks 39 at intervals. The third transmission rod 40 is movably connected between the third mounting blocks 39 via bearings 8. The third transmission rod 40 is made of stainless steel. The left side of each third transmission rod 40 is fixedly connected with a fifth bevel gear 42 via a flat key, and the right side of each third transmission rod 40 is fixedly connected with a fourth bevel gear 41 via a flat key. The upper rotating rod 26 and the lower rotating rod 27 are connected to each other via... The side ends are all fixedly connected with a sixth bevel tooth 43 via a flat key, and the sixth bevel tooth 43 meshes with the corresponding fifth bevel tooth 42. The right side of the second processing chamber 21 is fixedly connected with second mounting blocks 36 at intervals via bolts. The second mounting blocks 36 are movably connected with a second transmission rod 37 via bearings 8. The two ends of the second transmission rod 37 are fixedly connected with third bevel teeth 38 via flat keys, and the third bevel teeth 38 mesh with the corresponding fourth bevel teeth 41. The middle end of the second transmission rod 37 is fixedly connected with a fourth gear 35 via a flat key. The second motor 33 is fixedly connected to the right side of the second processing chamber 21 via bolts. The second motor 33 is a servo motor and is equipped with a frequency converter. The output end of the second motor 33 is fixedly connected with a third gear 34 via a flat key. The third gear 34 meshes with the fourth gear 35 to realize multi-stage power transmission.

[0039] like Figures 1 to 7As shown, the cleaning assembly includes a second rotating shaft 45, an impeller 46, a protective cover 47, a seventh bevel gear 48, a drive shaft 49, an eighth bevel gear 50, a rotating plate 51, and a brush assembly 52. ​​The second rotating shaft 45 is movably connected inside the connecting pipe 22 via a bearing 8. The bearing 8 is equipped with a sealing gasket to prevent wastewater from seeping in. The impeller 46 is welded and fixed to the second rotating shaft 45. The impeller 46 adopts a propeller-type structure and can generate driving force using the flow of wastewater. The seventh bevel gear 48 is fixedly connected to both ends of the second rotating shaft 45 via a flat key. The connecting pipe 22 is provided with drive shafts 49 at both the upper and lower ends. The drive shafts 49 are made of stainless steel round rods and are movably connected to the bearings 8 via the seventh bevel gear 48. The drive shaft 49 is connected to the right side wall of the first processing chamber 1. A rotating plate 51 is welded and fixed to the left end of the drive shaft 49. The rotating plate 51 has a circular structure. Both ends of the right side of the rotating plate 51 are connected to a brush assembly 52 by bolts. The brush assembly 52 is in contact with the surface of the grid 23. The right end of the drive shaft 49 is fixedly connected to an eighth bevel tooth 50 by a flat key. The eighth bevel tooth 50 meshes with the corresponding seventh bevel tooth 48 to realize the change of movement direction. The upper and lower surfaces of the connecting pipe 22 are fixedly connected to a protective cover 47 for protecting the seventh bevel tooth 48 and the eighth bevel tooth 50 by bolts. The protective cover 47 is made of polyvinyl chloride and has good anti-corrosion performance.

[0040] like Figures 1 to 7 As shown, the brush assembly 52 includes a brush body 53, connecting rods 54, limiting blocks 55, and springs 56. The brush body 53 is slidably connected to the rotating plate 51, and the bristles of the brush body 53 are made of nylon and are elastic. Two mutually spaced connecting rods 54 are welded and fixed to the left side of the brush body 53. The connecting rods 54 are made of stainless steel and are also slidably connected to the rotating plate 51. The connecting rods 54 are covered and connected to the outer surface of the inner side of the rotating plate 51 by springs 56. The springs 56 are compression springs, which can realize the elastic extension and retraction of the brush body 53. Limiting blocks 55 are welded and fixed to the left side of each connecting rod 54. The limiting blocks 55 are circular and have a diameter larger than the connecting rods 54 to prevent the connecting rods 54 from falling out of the rotating plate 51.

[0041] The inner walls of the first treatment chamber 1 and the second treatment chamber 21 are coated with an anti-corrosion coating, which is a polytetrafluoroethylene coating or an epoxy resin coating with a thickness of 0.5-1.5 mm, effectively resisting the corrosion of heavy metal wastewater. The shells of the first treatment chamber 1 and the second treatment chamber 21 are made of 304 stainless steel with a thickness of 3-8 mm, combining strength and corrosion resistance. The permanent magnet 12 is a neodymium iron boron permanent magnet, and the outer surface of the permanent magnet 12 is covered with an anti-corrosion protective shell, which is made of titanium alloy or polyvinyl chloride. The swing angle range of the permanent magnet 12 is 30-60°, and the polarities of two adjacent permanent magnets 12 are opposite, forming an alternating magnetic field to improve the adsorption efficiency of heavy metals.

[0042] The invention is used as follows: First, electroplating wastewater is introduced into the first treatment chamber 1 through the inlet pipe 2. Simultaneously, the first motor 18 is started, driving the first gear 19 to rotate. This gear meshes with the second gear 20 and the first transmission rod 16. The second bevel teeth 17 at both ends of the first transmission rod 16 mesh with the first bevel teeth 14 at the top of the screw 7, causing the screws 7 on both sides to rotate synchronously. The slider 10 on the screw 7 slides up and down along the slide rail 5, pulling the permanent magnet 12 to oscillate at an angle of 30-60° via the connecting rod 13, forming a dynamic magnetic field that quickly adsorbs magnetic heavy metal ions in the wastewater. After preliminary adsorption, the wastewater flows to the second treatment chamber 21 through the connecting pipe 22. The grid 23 inside the connecting pipe 22 intercepts suspended impurities, while the wastewater flow drives the impeller 46 to rotate. The second rotating shaft 45 drives the transmission shaft 49 and rotating plate 51 to rotate via the bevel gear transmission. The brush assembly 52, under the action of the spring 56, tightly adheres to the grid 23, cleaning impurities in real time and preventing blockage. Heavy metal treatment agent is added to the second treatment chamber 21 through the discharge port 24. The second motor 33 is started. The second motor 33 drives the second transmission rod 37 to rotate via gear transmission. The bevel gear transmission drives the third transmission rod 40 and the upper and lower rotating rods to rotate synchronously. The upper active bevel gear 28 and the lower active bevel gear 29 drive the driven bevel gear 30 and the first rotating shaft 31 to rotate. The stirring rod 32 performs three-dimensional stirring of the wastewater and the agent to ensure a full reaction. After treatment, the drain valve 25 is opened to discharge the qualified wastewater. The heavy metal impurities adsorbed by the permanent magnet 12 and the deposits on the grid 23 are cleaned periodically.

[0043] In the description of this invention, it should be understood that the terms "coaxial," "bottom," "one end," "top," "middle," "other end," "upper," "side," "top," "inner," "front," "center," "both ends," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting this invention.

[0044] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," "fixing," "screw connection," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] 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 present invention. Various changes and modifications can be made to the present invention without departing from its spirit and scope. All such changes and modifications fall within the scope of the present invention as claimed, which is defined by the appended claims and their equivalents.

[0046] The control method of this invention is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this invention is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

Claims

1. A front-end treatment device for electroplating wastewater contaminated with heavy metals, characterized in that: It includes a first processing chamber (1), a transmission chamber (3), a swing assembly, a mounting rod (11), a permanent magnet (12), a connecting rod (13), a second processing chamber (21), a connecting pipe (22), and a stirring assembly; The transmission chamber (3) is fixedly connected to the upper end of the first processing chamber (1); An installation rod (11) is fixedly connected in the transmission chamber (3); The transmission chamber (3) is also equipped with a swing assembly; Permanent magnets (12) are hinged to both sides of the lower end of the mounting rod (11), and connecting rods (13) are hinged to the permanent magnets (12). The other end of the connecting rods (13) is hinged to the swing assembly. The first processing chamber (1) and the second processing chamber (21) are connected together by a connecting pipe (22); The second processing chamber (21) is equipped with a stirring assembly.

2. The front-end treatment device for electroplating wastewater based on heavy metal pollution according to claim 1, characterized in that: It also includes an inlet pipe (2), a screen (23), a medicine outlet (24), a drain valve (25), and a cleaning assembly; The first processing chamber (1) is equipped with a water inlet pipe (2); The upper end of the second processing chamber (21) is fixedly connected to a drug outlet (24), and the lower end of the second processing chamber (21) is fixedly connected to a drain valve (25). The connecting pipe (22) is provided with a grid (23); A cleaning component is also connected to the connecting pipe (22).

3. The front-end treatment device for electroplating wastewater based on heavy metal pollution according to claim 1, characterized in that: The swing assembly includes a bearing seat (4), a slide rail (5), a mounting plate (6), a screw (7), a bearing (8), a bushing (9), a slider (10), and a transmission assembly; Bearing seats (4) are fixedly connected to both sides of the bottom surface inside the transmission chamber (3). Slide rails (5) are fixedly connected to the left and right side walls of the transmission chamber (3). The upper part of the transmission chamber (3) is fixedly connected to the mounting plate (6). A screw (7) is movably connected in the bearing housing (4), and the upper end of the screw (7) is movably connected in the mounting plate (6) through the bearing (8). A transmission assembly is connected between the top ends of the screw (7). The mounting rod (11) is fixedly connected to the middle of the lower surface of the mounting plate (6); The screw (7) is connected to a slider (10) by a thread, and each slider (10) is fixedly connected to a slider (10), which is slidably connected to the slide rail (5). The upper end of the connecting rod (13) is hinged to the corresponding slider (10).

4. The front-end treatment device for electroplating wastewater based on heavy metal pollution according to claim 3, characterized in that: The transmission assembly includes a first bevel gear (14), a first mounting block (15), a first transmission rod (16), a second bevel gear (17), a first motor (18), a first gear (19), and a second gear (20); Each screw (7) has a first bevel tooth (14) fixedly connected to its top end. The mounting plate (6) has a first mounting block (15) fixedly connected to both ends of the upper end. The first mounting blocks (15) are connected to a first transmission rod (16) through a bearing (8). The first transmission rod (16) has a second bevel tooth (17) fixedly connected to both ends of the first transmission rod (16). The second bevel tooth (17) meshes with the first bevel tooth (14). The first transmission rod (16) is fixedly connected to the middle end of a second gear (20); The transmission chamber (3) is fixedly connected to the top of the interior of the transmission chamber (3). The first gear (19) is fixedly connected to the output end of the first motor (18). The first gear (19) and the second gear (20) mesh together.

5. The front-end treatment device for electroplating wastewater based on heavy metal pollution according to claim 1, characterized in that: The stirring assembly includes an upper rotating rod (26), a lower rotating rod (27), an upper driving bevel gear (28), a lower driving bevel gear (29), a driven bevel gear (30), a first rotating shaft (31), a stirring rod (32), and a synchronous conveying assembly; The upper end of the second processing chamber (21) is movably connected to an upper rotating rod (26) via a bearing (8), and the lower end of the upper rotating rod (26) is fixedly connected to an upper driving bevel gear (28). The lower end of the second processing chamber (21) is movably connected to a lower rotating rod (27) via a bearing (8), and the upper end of the lower rotating rod (27) is fixedly connected to a lower driving bevel gear (29). A synchronous transmission assembly is provided between the outer ends of the upper rotating rod (26) and the lower rotating rod (27) for driving transmission; Several driven bevel gears (30) are meshed between the upper driving bevel gear (28) and the lower driving bevel gear (29). Each driven bevel gear (30) has a first rotating shaft (31) fixedly connected to its side, and each first rotating shaft (31) has several stirring rods (32) fixedly connected to its side.

6. The front-end treatment device for electroplating wastewater based on heavy metal pollution according to claim 5, characterized in that: The synchronous transmission assembly includes a second motor (33), a third gear (34), a fourth gear (35), a second mounting block (36), a second transmission rod (37), a third bevel gear (38), a third mounting block (39), a third transmission rod (40), a fourth bevel gear (41), a fifth bevel gear (42), a sixth bevel gear (43), and a transmission rod protection chamber (44). The transmission rod protection chamber (44) is fixedly connected to the outer side of the second processing chamber (21); The upper and lower surfaces of the second processing chamber (21) are fixedly connected with third mounting blocks (39) at intervals. The third mounting blocks (39) are movably connected with third transmission rods (40) through bearings (8). The third transmission rod (40) is fixedly connected to the left side with a fifth bevel tooth (42), and the third transmission rod (40) is fixedly connected to the right side with a fourth bevel tooth (41). The outer ends of the upper rotating rod (26) and the lower rotating rod (27) are both fixedly connected with a sixth bevel tooth (43), and the sixth bevel tooth (43) meshes with the corresponding fifth bevel tooth (42). On the right side of the second processing chamber (21), a second mounting block (36) is fixedly connected at intervals. A second transmission rod (37) is movably connected between the second mounting blocks (36) via a bearing (8). Both ends of the second transmission rod (37) are fixedly connected with a third bevel tooth (38). The third bevel tooth (38) meshes with the corresponding fourth bevel tooth (41). A fourth gear (35) is fixedly connected to the middle end of the second transmission rod (37), and the second motor (33) is fixedly connected to the right side of the second processing chamber (21). A third gear (34) is fixedly connected to the output end of the second motor (33), and the third gear (34) and the fourth gear (35) mesh together.

7. The front-end treatment device for electroplating wastewater based on heavy metal pollution according to claim 2, characterized in that: The cleaning assembly includes a second rotating shaft (45), an impeller (46), a protective cover (47), a seventh bevel gear (48), a drive shaft (49), an eighth bevel gear (50), a rotating plate (51), and a brush assembly (52). The second rotating shaft (45) is movably connected inside the connecting pipe (22) via a bearing (8), and an impeller (46) is fixedly connected to the second rotating shaft (45). The second rotating shaft (45) is fixedly connected to the seventh bevel tooth (48) at both ends; The connecting pipe (22) is provided with a drive shaft (49) at both the upper and lower ends. The drive shaft (49) is movably connected to the right side wall of the first processing chamber (1) through a bearing (8). A rotating plate (51) is fixedly connected to the left end of the drive shaft (49). Both ends of the right side of the rotating plate (51) are connected to brush assemblies (52). The right end of each drive shaft (49) is fixedly connected with an eighth bevel tooth (50), and the eighth bevel tooth (50) meshes with the corresponding seventh bevel tooth (48). The upper and lower surfaces of the connecting pipe (22) are fixedly connected with protective covers (47) for protecting the seventh bevel tooth (48) and the eighth bevel tooth (50).

8. The front-end treatment device for electroplating wastewater based on heavy metal pollution according to claim 7, characterized in that: The brush assembly (52) includes a brush body (53), a connecting rod (54), a limiting block (55), and a spring (56). The brush body (53) is slidably connected in the rotating plate (51); Two intermittent connecting rods (54) are fixedly connected to the left side of the brush body (53), and the connecting rods (54) are also slidably connected in the rotating plate (51); The connecting rod (54) is covered with a spring (56) on the outer surface inside the rotating plate (51). Limiting blocks (55) are fixedly connected to the left side of each connecting rod (54).

9. The front-end treatment device for electroplating wastewater based on heavy metal pollution according to claim 1, characterized in that: The inner walls of the first processing chamber (1) and the second processing chamber (21) are coated with an anti-corrosion coating, which is a polytetrafluoroethylene coating or an epoxy resin coating with a thickness of 0.5 to 1.5 mm. The shells of the first processing chamber (1) and the second processing chamber (21) are made of stainless steel with a thickness of 3 to 8 mm.

10. The front-end treatment device for electroplating wastewater based on heavy metal pollution according to claim 1, characterized in that: The permanent magnet (12) is a neodymium iron boron permanent magnet, and the outer surface of the permanent magnet (12) is covered with an anti-corrosion protective shell, which is made of titanium alloy or polyvinyl chloride. The swing angle range of the permanent magnet (12) is 30 to 60°, and the polarities of two adjacent permanent magnets (12) are opposite.

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