Sewage multi-stage deep environment-friendly treatment device

Abstract

The invention relates to the technical field of sewage multi-stage treatment, and discloses a sewage multi-stage deep environment-friendly treatment device which comprises a shell, a water inlet pipe is mounted on one side of the top of the shell, three electromagnetic valves are mounted in the middle of the inner wall of the shell, and three filter layers are mounted at the bottom of the inner wall of the shell. A coarse grating plate is arranged at the top of the shell, a fine grating plate is arranged at the bottom of the inner wall of the shell, and the device further comprises a floating ball suction device and a spoiler. The sewage multi-stage deep environment-friendly treatment device realizes sewage multi-stage automatic treatment, can automatically intercept and clean impurities with different particle sizes, prevents the device from being blocked, and improves the treatment continuity; all the mechanisms are coordinated and linked, shutdown for manual cleaning is not needed, and potential safety hazards are eradicated; self-cleaning of the cleaning parts is synchronously completed, the operation and maintenance cost and part loss are reduced, the sewage treatment efficiency and water quality are improved, and the efficient, safe and continuous requirements of modern environment-friendly treatment are met.

Description

Technical Field

[0001] This invention relates to the field of multi-stage wastewater treatment technology, and in particular to a multi-stage deep environmental protection wastewater treatment device. Background Technology

[0002] Wastewater, an inevitable pollutant generated in industrial production and daily life, will severely pollute soil, groundwater, and surface water bodies if discharged directly without advanced treatment, damaging the ecological environment and wasting water resources. Currently, conventional advanced wastewater treatment in the industry mostly adopts a process of filtration combined with adsorption and disinfection. This involves multi-stage filtration to intercept impurities of different particle sizes, followed by adsorption of small molecule pollutants by filter cartridges, and finally disinfection of harmful microorganisms by a disinfection module, achieving wastewater discharge that meets standards or for recycling.

[0003] During the operation of existing multi-stage deep environmental protection wastewater treatment devices, large debris, blocky garbage, and fibrous impurities carried in the wastewater can easily enter the device, causing blockages in pipes and filter components, and even damaging the equipment, affecting the continuity and stability of wastewater treatment. Fine suspended particles, flocculent impurities, and sedimented sludge tend to accumulate at the bottom of the device, which is difficult to clean automatically. Long-term accumulation will reduce filtration efficiency and increase the operating load of the device. Moreover, the existing devices' filtration, retrieval, and oil removal modules are mostly set up independently, lacking coordination and linkage. Impurity cleaning relies on manual operation during shutdown, which not only interrupts the wastewater treatment process and affects the continuity of operation, but also poses health and safety hazards to operators who are in close contact with wastewater and harmful impurities. Uneven manual cleaning is difficult to completely remove accumulated impurities, and repeated operation will also accelerate the wear and tear of filter components. Most of them lack dedicated automated cleaning and retrieval structures, and some equipment is only equipped with simple filtration or rinsing components, which can only achieve preliminary treatment in a single stage and cannot achieve graded automatic cleaning of impurities. Summary of the Invention

[0004] The technical problem to be solved by this invention is that existing technologies have drawbacks such as easy clogging, poor coordination, cumbersome operation and maintenance, and significant safety hazards. To address this, we propose a multi-stage deep environmental protection treatment device for wastewater.

[0005] To achieve the above objectives, this application adopts the following technical solution: a multi-stage deep environmental protection treatment device for sewage, including a shell, an inlet pipe installed on one side of the top of the shell, three electromagnetic valves installed in the middle of the inner wall of the shell, three filter layers installed at the bottom of the inner wall of the shell, a coarse grid plate provided at the top of the shell, a fine grid plate provided at the bottom of the inner wall of the shell, and also including a float suction device and a baffle plate. The outer side of the housing is provided with a primary treatment mechanism, which allows the coarse grid plate to perform initial filtration of the discharged sewage when it is placed on top of the housing. Afterward, it deflects 180 degrees to dump the collected sewage, garbage and large impurities, so as to ensure that the sewage will not be blocked or damaged during secondary treatment. The filtering and scooping mechanism is connected to the primary treatment mechanism so that when the coarse screen deflects and moves, the fine screen moves upward to scoop up the fine impurities in the sewage inside the shell. After the coarse screen completes its deflection, it also rises to the top area of ​​the shell to deflect backward and dump the waste, thus completing secondary screening and self-cleaning. The oil layer scum cleaning mechanism is connected to the multi-stage treatment mechanism so that after the coarse and fine screen plates are deflected, the float suction device automatically descends into the sewage surface inside the shell to suck up the oil and scum on the surface of the sewage after secondary filtration, so as to complete the three-stage treatment of sewage. The deflecting turbulence mechanism works in conjunction with the oil scum cleaning mechanism to achieve synchronous deflection of multiple turbulence plates, disturbing the water flow surface inside the shell, causing the sewage surface to gather towards the float suction device, which is more conducive to the float suction device sucking up the oil on the sewage surface.

[0006] Preferably, the primary processing unit includes: The system comprises two inner plates, each with a first vertical groove in its center. An outer plate is fixedly connected to the outer side of the inner plate, and a second vertical groove is formed in its center. A forward plate is slidably connected to the top and bottom of the front end of the outer plate via guide shells. A guide groove is formed on the surface of the forward plate. An electric lead screw is fixedly connected to the surface of the outer plate. A lifting slide plate is mounted on one side of the electric lead screw via a slide table. A sliding column is fixedly connected to the front end of the lifting slide plate, and the sliding column is slidably connected to the inner wall of the guide groove. A shaped groove is formed on the surface of the lifting slide plate. A high-low slide bar is provided between the outer and inner plates. The top of the high-low slide bar is slidably connected to the inner wall of the first vertical groove, and the bottom of the high-low slide bar is slidably connected to the inner wall of the second vertical groove. The front end of a coarse grid plate is rotatably connected to the front end of the top of the housing via a shaft. Gear discs are fixedly connected to both sides of the shaft at the front end of the coarse grid plate. A rack plate is fixedly connected to the front end of the forward plate, and the top of the inner wall of the rack plate meshes with the top of the gear discs.

[0007] Preferably, the filtering and retrieval mechanism includes: The moving module has the fine grid plate fixedly connected to the bottom of the moving module. The two sides of the bottom of the moving module are fixedly connected to one end of the top of the high and low slide bar. The top of the second vertical groove is provided with a semi-circular arc groove. A guide shell is fixedly connected between the two inner plates.

[0008] Preferably, the oil scum removal mechanism includes: The lifting plate has two sides slidably connected to the grooves on the top of the outer plate via sliders. A toothed frame is fixedly connected to the top of the lifting plate. Two gantry frames are fixedly connected to the tops of the two inner plates. A rotating shaft is rotatably connected between the two gantry frames. The surface of the rotating shaft is engaged with a toothed groove on one side of the inner wall of the toothed frame via a fixed gear. A winding reel is fixedly connected to the front end of the rotating shaft. A rope is wound around the surface of the winding reel. The bottom of the rope is fixedly connected to a float suction device. An oil treatment device is fixedly connected to the bottom of the gantry frames. One side of the oil treatment device is connected to the bottom of the float suction device via a conduit. A spring is fixedly connected to the top of the inner plate. The top of the spring is fixedly connected to the lifting plate.

[0009] Preferably, the deflecting spoiler mechanism includes: The motor is fixedly connected to one side of the housing via a bracket. An eccentric column is fixedly connected to the output end of the motor at the bottom via a turntable. Both ends of one side of the housing are slidably connected to reciprocating plates via sliding rods and sleeves. The surface of the reciprocating plates has several short grooves corresponding to the number of spoilers. A moving groove is formed on the top of the reciprocating plates. The eccentric column is slidably connected to the inner wall of the moving groove. A protruding rod is fixedly connected to the top of the spoiler. The protruding rod is slidably connected to the inner wall of the short groove. The top and bottom of the spoiler are rotatably connected to grooves on the side of the inner wall of the housing via rotating shafts.

[0010] Preferably, a positioning rod is fixedly connected to one side of the top of the high and low sliding rod, a limiting groove is opened inside the inner plate, the positioning rod is slidably connected to the inner wall of the limiting groove, the inner wall of the limiting groove has an inverted "J" structure, and the side is perpendicular to the top semi-circle.

[0011] Preferably, a guide frame is fixedly connected to the top of the inner plate, and a hole is opened at the front end of the guide frame, through which the rope passes.

[0012] Preferably, the filter layer consists of three layers from top to bottom: an activated carbon filter element, a PP melt-blown filter element, and an ultrafiltration membrane filter element.

[0013] The technical effects and advantages of this invention are as follows: In this invention, when wastewater enters the housing through the inlet pipe, the coarse screen is in a horizontal filtration state, which can effectively intercept large debris, blocky garbage, and fibrous impurities carried in the wastewater, preventing large impurities from entering the subsequent treatment area and causing blockage of the pipes or filter elements. After filtration, with the cooperation of the relevant drive mechanism, the coarse screen can automatically complete a 180-degree deflection action, dumping the intercepted and collected impurities outward and discharging them, realizing automatic sludge removal and self-cleaning of the front-end filtration structure, keeping the filter surface unobstructed at all times, greatly reducing the failure rate of the device, and ensuring continuous, stable, and efficient operation of the wastewater treatment front-end pretreatment.

[0014] In this invention, while the coarse screen plate is deflecting and cleaning, the high and low sliding rods simultaneously drive the fine screen plate to rise from the bottom of the shell. During the ascent, the fine suspended particles, flocculent impurities, and sedimented sludge inside the sewage are collected, achieving secondary fine filtration. When the fine screen plate is raised to the top area, it deflects backward with the cooperation of the guide structure and the limiting structure, dumping out the collected impurities, completing secondary screening and automatic cleaning. The entire process does not require machine shutdown or manual contact with sewage and impurities, reducing the intensity of manual cleaning and operational risks, improving the automation level of the device, and ensuring uninterrupted and continuous operation of the sewage treatment process.

[0015] In this invention, after the coarse and fine screens complete the filtration, retrieval, and sludge removal processes, the float-type absorber automatically descends to the sewage surface under the action of the rope release. Relying on its own buoyancy, it remains stably suspended on the water surface, continuously and efficiently absorbing floating oil, sludge, and light floating matter from the sewage surface. Simultaneously, the deflecting turbulence mechanism drives the turbulence plate to reciprocate synchronously, disturbing the sewage surface and causing the dispersed oil and sludge to converge towards the float-type absorber, further improving the cleaning efficiency and range of oil and sludge. Through three-stage pretreatment, the load on the downstream processing is effectively reduced, the probability of filter layer clogging is decreased, the service life of the filter components is extended, and the overall purification stability is improved. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a cross-sectional view of the internal structure of the present invention; Figure 4 This is an exploded view of the main structure of the present invention; Figure 5 This is a schematic diagram of the position structure of the high and low sliding rods and the moving module of the present invention; Figure 6 This is an exploded view of the deflection-type turbulence mechanism of the present invention; Figure 7 This is a cross-sectional view of the internal structure of the inner plate of the present invention; Figure 8 This is an exploded view of part of the oil layer scum removal mechanism of the present invention.

[0017] Legend: 1. Shell; 2. Inlet pipe; 3. Solenoid valve; 4. Filter layer; 5. Coarse grid plate; 6. Fine grid plate; 7. Float suction device; 8. Baffle plate; 9. Inner plate; 10. First vertical groove; 11. Outer plate; 12. Second vertical groove; 13. Forward plate; 14. Guide groove; 15. Electric lead screw; 16. Lifting slide plate; 17. Sliding column; 18. Irregular groove; 19. High and low sliding rod; 20. Gear disc; 21. 21. Rack plate; 22. Moving module; 23. Semi-circular groove; 24. Guide shell; 25. Lifting plate; 26. Rack plate frame; 27. Gantry frame; 28. Rotating shaft; 29. ​​Reel; 30. Rope; 31. Oil treatment device; 32. Spring; 33. Motor; 34. Eccentric column; 35. Reciprocating plate; 36. Short groove; 37. Moving groove; 38. Protruding rod; 39. Positioning rod; 40. Limiting groove; 41. Guide frame. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the invention in a schematic manner, and therefore only show the components relevant to the invention.

[0019] Reference Figures 1-8 As shown, the present invention provides a technical solution: a multi-stage deep environmental protection treatment device for sewage, including a shell 1, an inlet pipe 2 installed on one side of the top of the shell 1, three electromagnetic valves 3 installed in the middle of the inner wall of the shell 1, three filter layers 4 installed at the bottom of the inner wall of the shell 1, a coarse grid plate 5 provided on the top of the shell 1, a fine grid plate 6 provided at the bottom of the inner wall of the shell 1, and also includes a float suction device 7 and a baffle plate 8.

[0020] A primary treatment mechanism is provided on the outside of the casing 1 to ensure that the wastewater will not be blocked or damaged during secondary treatment.

[0021] Reference Figures 1-7 As shown in this implementation plan, the primary processing unit includes: Two inner plates 9 are provided. A first vertical groove 10 is formed in the middle of the inner plate 9. An outer plate 11 is fixedly connected to the outer side of the inner plate 9. A second vertical groove 12 is formed in the middle of the outer plate 11. The top and bottom of the front end of the outer plate 11 are slidably connected to a forward plate 13 through a guide shell. A guide groove 14 is formed on the surface of the forward plate 13. An electric lead screw 15 is fixedly connected to the surface of the outer plate 11. A lifting slide plate 16 is mounted on one side of the electric lead screw 15 through a slide table. A sliding column 17 is fixedly connected to the front end of the lifting slide plate 16. The sliding column 17 is slidably connected to the inner wall of the guide groove 14. An irregular groove 18 is formed on the surface of the lifting slide plate 16. A high-low slide bar 19 is provided between the outer plate 11 and the inner plate 9. The top of the high-low slide bar 19 is slidably connected to the inner wall of the first vertical groove 10, and the bottom of the high-low slide bar 19 is slidably connected to the inner wall of the second vertical groove 12. The front end of the coarse grid plate 5 is rotatably connected to the front end of the top of the housing 1 through a shaft. The two ends of the shaft at the front end of the coarse grid plate 5 are connected to the inner side of the housing 1. A toothed disc 20 is fixedly connected to each side, and a rack plate 21 is fixedly connected to the front end of the forward plate 13. The top of the inner wall of the rack plate 21 is meshed with the top of the toothed disc 20. It is connected to the sewage pipe through the water inlet pipe 2. Sewage is discharged from the top into the shell 1 through the water inlet pipe 2. When the sewage inside the shell 1 reaches the highest water level, the water inlet pipe 2 stops discharging sewage. Then the electric screw 15 will run first, driving the lifting slide plate 16 to move upward through the slide table. The side of the lifting slide plate 16 is slidably connected to the slide grooves on both sides of the outer plate 11 through the slider. When the lifting slide plate 16 moves upward, the top of the high and low slide rod 19 slides on the inner wall of the first vertical groove 10, while the bottom of the high and low slide rod 19 slides along the inner wall of the second vertical groove 12. At this time, the high and low slide rod 19 is at the top of the inner wall of the irregular groove 18. Since the first vertical groove 10 and the second vertical groove 12 are both straight grooves, the irregular groove 18 restricts the high and low slide rod 19 from driving the lifting slide plate 16 to move upward in a straight line. The sliding column 17 moves synchronously with the lifting slide plate 16, allowing the sliding column 17 to slide along the inner wall of the guide groove 14. As the sliding column 17 gradually rises, because the bottom of the guide groove 14 is an inclined structure, the sliding column 17 will push the forward plate 13 forward along the guide groove 14 when it rises. At this time, the forward plate 13 will be restricted by the front end of the outer plate 11 and move forward in a straight line for a certain distance. This forward distance is equal to the horizontal span distance from the inclined groove of the guide groove 14 to its own vertical groove. Then, through the rack plate 21, the top of the forward plate pushes the top of the gear plate 20 to rotate, so that the rack plate 21 pushes the gear plate 20 to rotate 180 degrees, thereby causing the coarse grid plate 5 to deflect and flip forward as a whole, so that the original top surface deflects forward to the bottom, dumping the large garbage inside that is filtered sewage, and then dumping the garbage into the collection box at the front end. The staff can clean the sewage and garbage inside the collection box regularly. Afterwards, the lifting slide plate 16 continues to move forward, and the sliding column 17 slides from the inclined groove of the guide groove 14 into the vertical groove, restricting the position of the forward plate 13 and fixing it in the position after the forward movement, keeping the coarse grid plate 5 in the deflected state. This process occurs during the initial movement distance of the lifting slide plate 16 driven by the electric screw 15. During the subsequent movement of the lifting slide plate 16, the position of the forward plate 13 is restricted and will not move again. Only when the electric screw 15 resets will it drive the forward plate 13 to move backward and reset. Before entering the shell 1, the sewage first passes through the coarse screen 5 to filter out large debris before entering the shell 1. Inside the shell 1, the sewage is then filtered by the fine screen 6 to remove small impurities. After that, the solenoid valve 3 opens to discharge the sewage after secondary filtration downwards. The sewage flows to the filter layer 4 area at the bottom of the shell 1, where it undergoes an adsorption filtration process. This adsorbs small molecule odor impurities and some incompletely settled tiny heavy metal particles in the sewage onto the surface of the filter media, further improving the water purification effect. The sewage that has completed the initial deep treatment then flows slowly into the cavity at the bottom of the shell 1 through the evenly distributed permeation holes at the bottom of the filter layer 4. Then, an ultraviolet disinfection module is installed in the bottom cavity of the shell 1. The module will continuously release ultraviolet wavelengths to irradiate the flowing water, disinfect harmful pathogens, viruses and other microorganisms remaining in the sewage, and prevent harmful microorganisms from being discharged into the natural environment with the treated water and causing pollution. Thus, the multi-stage deep treatment of sewage is completed. When the coarse screen 5 deflects back to its initial filtration position, ready for the next round of wastewater to pass through the filter, the entire process of flipping, dumping waste, and resetting can be completed automatically by a drive device without requiring manual contact with the filter structure. This significantly reduces the cleaning burden on staff and avoids the health risks associated with manual contact with wastewater and garbage. At the same time, the device integrates multiple deep treatment steps such as filtration, adsorption, and disinfection into a single unit, eliminating the need for multiple independent treatment tanks, thus occupying less space and ensuring a tighter connection between treatment processes. This reduces the risk of wastewater leakage during transport and better meets the needs of small-scale wastewater treatment.

[0022] The multi-stage deep environmental protection wastewater treatment device also includes a filtration and retrieval mechanism, which is connected to the primary treatment mechanism via a transmission connection.

[0023] Reference Figures 1-5 As shown in this embodiment, the filtration and retrieval mechanism includes: The moving module 22 and the fine grid plate 6 are fixedly connected to the bottom of the moving module 22. The two sides of the bottom of the moving module 22 are fixedly connected to one end of the top of the high and low slide bar 19. The top of the second vertical groove 12 is provided with a semi-circular arc groove 23. A guide shell 24 is fixedly connected between the two inner plates 9. When the electric screw 15 drives the lifting slide plate 16 to move upward from the bottom, it drives the high and low slide bar 19 to rise in a straight line. The two high and low slide bars 19 are fixedly connected to the moving module 22, and thus synchronously drive the moving module 22 and the fine grid plate 6 to rise and move, so that the moving module 22 carries the fine grid plate 6 to rise and extend along the inner wall of the housing 1. After the high and low slide bar 19 slides to the top of the inner wall of the first vertical groove 10 and the second vertical groove 12, the fine grid plate 6 is completely moved out of the housing 1. The top of the high and low slide bar 19 will abut against the top of the inner wall of the first vertical groove 10, and the bottom of the high and low slide bar 19 is also at the interface between the top of the inner wall of the second vertical groove 12 and the semi-circular arc groove 23. At this time, the lifting slide plate 16 moves upward, and the irregular groove 18 itself is divided into three sections, of which the top and middle sections are inclined grooves distributed in opposite directions. The inclined groove at the top of the irregular groove 18 pushes the bottom of the high and low slide bar 19 to move. When the top of the high and low slide bar 19 is at the top of the inner wall of the first vertical groove 10 and can no longer rise, the inclined groove of the irregular groove 18 will push the bottom of the high and low slide bar 19 to deflect forward with the top of the high and low slide bar 19 as the center, so that the bottom of the high and low slide bar 19 enters the inner wall of the semi-circular groove 23. The inner wall structure of the semi-circular groove 23 is semi-circular. When the top section of the irregular groove 18 guides the high and low slide rod 19 to slide along the semi-circular groove 23 to the middle section of the semi-circular groove 23, the high and low slide rod 19 will complete a 90-degree deflection. Then the high and low slide rod 19 is between the top section and the middle section of the irregular groove 18. Then the lifting slide plate 16 continues to rise, using the middle section of the irregular groove 18 for secondary guidance. Initially, the high and low slide rod 19 slides along the semi-circular groove 23 to the top of the semi-circular groove 23, and the high and low slide rod 19 will also be between the middle section and the bottom section of the irregular groove 18, which also causes the high and low slide rod 19 to deflect 90 degrees again. This process causes the high-low slide bar 19 to deflect itself 180 degrees with its top as the center, so that the moving module 22 and the fine grid plate 6 deflect synchronously with it. Then the lifting slide plate 16 continues to rise, and the high-low slide bar 19 slides along the bottom straight groove of the irregular groove 18 to restrict the bottom end of the high-low slide bar 19 to the top of the semi-circular groove 23. The high-low slide bar 19 first drives the moving module 22 to move upward, and then drives the moving module 22 to deflect backward by 180 degrees, so that the fine screen plate 6 rises from the bottom of the shell 1 to collect small impurities in the sewage inside the shell 1. After that, the moving module 22 deflects and drives the fine screen plate 6 to deflect backward to the top of the guide shell 24, pouring the impurities collected by the fine screen plate 6 into the guide shell 24. After the pouring is completed, the electric screw 15 runs in the opposite direction, driving the lifting slide plate 16 to move downward to reset, and driving the high-low slide bar 19 and the moving module 22 to move in the opposite direction to reset and move back into the shell 1 to resume the sewage treatment operation. This greatly reduces the labor intensity of manually cleaning impurities, and at the same time avoids the health damage to the operators caused by harmful bacteria or corrosive substances carried in the impurities, thus improving the safety of the device operation. Furthermore, the entire automatic impurity cleaning process does not require machine shutdown; it can be completed simply by the operation of the electric screw 15. This ensures the continuous operation of the sewage treatment process without interrupting it, thus guaranteeing the overall efficiency of sewage treatment and avoiding increased energy consumption and equipment wear caused by frequent start-ups and shutdowns. Through the cooperation of multi-stage filtration, sedimentation, and sterilization modules, this device can separate and purify pollutants of different particle sizes and types layer by layer. Compared with traditional single-stage sewage treatment devices, the effluent quality can meet higher discharge standards, adapting to increasingly stringent environmental emission requirements. At the same time, the automatic impurity collection and cleaning structure design also reduces the maintenance frequency of the device, making its overall operation more stable and reliable.

[0024] The multi-stage deep environmental protection wastewater treatment device also includes an oil layer scum removal mechanism, which is connected to the multi-stage treatment mechanism via a transmission connection.

[0025] Reference Figure 2 and Figure 8 As shown in this embodiment, the oil layer scum cleaning mechanism includes: A lifting plate 25 is slidably connected to the top of the outer plate 11 via sliders on both sides. A toothed frame 26 is fixedly connected to the top of the lifting plate 25. Two gantry frames 27 are fixedly connected to the top of the two inner plates 9. A rotating shaft 28 is rotatably connected between the two gantry frames 27. The surface of the rotating shaft 28 is engaged with a toothed groove on one side of the inner wall of the toothed frame 26 via a fixed gear. A winding reel 29 is fixedly connected to the front end of the rotating shaft 28. A rope 30 is wound around the surface of the winding reel 29. The bottom of the rope 30 is fixedly connected to the float suction device 7. An oil treatment device 31 is fixedly connected to the bottom of the gantry frame 27. One side of the oil treatment device 31 is connected to the bottom of the float suction device 7 via a conduit. The top of the inner plate 9 is fixedly connected to... Spring 32, the top of spring 32 is fixedly connected to lifting plate 25. When lifting slide plate 16 rises and drives high and low slide bar 19 to complete deflection movement, electric screw 15 will stop running for a period of time, so that the disturbed water flow in housing 1 tends to stabilize. After that, electric screw 15 will drive lifting slide plate 16 to continue to rise, so that the deflected high and low slide bar 19 slides along the bottom straight groove of the irregular groove 18, restricting the position of high and low slide bar 19. At the same time, lifting slide plate 16 itself continues to move upward, and then contacts the bottom sides of lifting plate 25, pushing lifting plate 25 upward to lift a distance, and causing lifting plate 25 to pull spring 32 to store force, so that one side of the inner wall of toothed frame 26 contacts the gear on the surface of rotating shaft 28, pushing rotating shaft 28 to rotate clockwise multiple times; The rotation of the shaft rod 28 causes the winding reel 29 to rotate synchronously, extending the rope 30 on the surface of the winding reel 29 downwards, causing the float suction device 7 to descend to the water surface inside the housing 1. The float on the outside of the float suction device 7 ensures that the float suction device 7 always floats and does not sink. Then the float suction device 7 and the oil treatment device 31 start to operate. The float suction device 7, suspended at the water surface, continuously sucks up floating objects and oil on the horizontal surface. The sucked floating objects and oil are transported to the preliminary filtration chamber inside the oil treatment device 31. The oil treatment device 31 uses an oleophilic and hydrophobic adsorption cotton net to initially intercept large floating debris and absorb most of the floating oil. The water after initial separation is collected in the water tank connected to the oil treatment device 31. When the lifting slide plate 16 descends and resets, the bottom of the lifting plate 25 is unrestricted, and the spring 32 will rebound and pull the lifting plate 25 down. The toothed frame 26 moves down to reset the rotating shaft 28, and the rope 30 is wound up on the surface of the winding reel 29, so that the float suction device 7 rises to the initial position. This avoids the float suction device 7 from being continuously soaked in sewage, which slows down the aging rate of the adsorption structure. The oil suction step of the float suction device 7 reduces the oil content of the filtered sewage and the proportion of floating debris on the water surface, reduces the operating load of subsequent multi-stage filtration treatment, avoids a large amount of floating oil and floating debris from clogging the pores of subsequent filter media in advance, extends the replacement cycle and service life of filter elements and filter media, and reduces the overall maintenance cost of the device.

[0026] The multi-stage deep environmental protection wastewater treatment device also includes a deflecting turbulence mechanism, which works in conjunction with the oil layer scum cleaning mechanism to facilitate the float suction device 7 to suck up oil stains on the surface of the wastewater.

[0027] Reference Figure 6 As shown in this embodiment, the deflection-type spoiler mechanism includes: Motor 33 is fixedly connected to one side of housing 1 via a bracket. An eccentric column 34 is fixedly connected to the output end of motor 33 via a turntable. Reciprocating plates 35 are slidably connected to both ends of one side of housing 1 via sliding rods and sleeves. The surface of the reciprocating plates 35 has several short grooves 36 corresponding to the number of baffles 8. A moving groove 37 is formed on the top of the reciprocating plates 35. The eccentric column 34 is slidably connected to the inner wall of the moving groove 37. A protruding rod 38 is fixedly connected to the top of the baffles 8 and slidably connected to the inner wall of the short grooves 36. The top and bottom of the baffles 8 are rotatably connected to grooves on the side of the inner wall of housing 1 via rotating shafts. A filter screen is installed at the inlet of these grooves. When the float absorber 7 enters the water surface, motor 33 starts running and drives the eccentric column 34. 4. The eccentric column 34 is coaxial but not concentric with the motor 33, so that the rotation process of the eccentric column 34 slides along the inner wall of the moving groove 37. Then, the eccentric column 34 slides along the moving groove 37 to drive the reciprocating plate 35 to move left and right repeatedly. During this process, the reciprocating plate 35 is limited by the sliding rod sleeve on one side and can only move back and forth repeatedly. The repeated movement of the reciprocating plate 35 will drive the protruding rod 38 to move synchronously through the short groove 36, and repeatedly deflect around the rotation axis of the baffle plate 8. The baffle plate 8 stirs the surface of the sewage to agitate the wave flow towards the float suction device 7, causing the floating objects on one side of the water surface to approach the float suction device 7. This allows the float suction device 7 to absorb more floating oil and floating debris on the water surface during a single lifting and lowering process, further improving the efficiency of the device for pre-treatment of sewage. As the baffle 8 deflects, it continuously agitates the water surface, breaking up large floating debris that was originally gathered together. This allows the debris to be more evenly dispersed and trapped by the adsorption structure, preventing large debris from getting stuck in the gaps of the float absorber 7 and affecting the adsorption efficiency. It also reduces the flow velocity obstruction caused by the accumulation of large debris in subsequent filtration steps. Furthermore, it prevents large dirt from entering the operating area of ​​the baffle 8 and causing obstruction. The filter screen at the groove inlet can block larger debris from entering the shaft gaps without affecting the water flow, preventing debris from getting stuck in the shaft and affecting the normal deflection of the baffle 8, thus extending the service life of the deflection mechanism.

[0028] Reference Figure 5 and Figure 7As shown in this embodiment: a positioning rod 39 is fixedly connected to one side of the top of the high-low slide bar 19. A limiting groove 40 is opened inside the inner plate 9. The positioning rod 39 is slidably connected to the inner wall of the limiting groove 40. The inner wall of the limiting groove 40 has an inverted "J" structure with a semi-circular top and a vertical side. When the high-low slide bar 19 moves upward from the bottom, the protrusion at one end of the positioning rod 39 will slide upward along the straight groove on the side wall of the limiting groove 40. When the high-low slide bar 19 deflects itself, one end of the positioning rod 39 will also slide synchronously along the arc groove at the top of the side wall of the limiting groove 40, thereby restricting the high-low slide bar 19 from moving in a circular trajectory and preventing the high-low slide bar 19 from deflecting itself and causing its position to deviate, which would hinder the movement of the high-low slide bar 19.

[0029] Reference Figure 8 As shown in this embodiment: a guide frame 41 is fixedly connected to the top of the inner plate 9. The front end of the guide frame 41 has a hole through which the rope 30 passes. When the rope 30 is wound up or unwound, the guide frame 41 can guide the vertical position of the rope 30 to avoid the rope 30 from swinging and deviating randomly during the winding and unwinding process, and avoid scratching and wear with the surrounding moving mechanism, so as to ensure that the float suction device 7 is at the designated position of the water surface inside the shell 1 each time it is raised or lowered.

[0030] Reference Figure 3 As shown in this embodiment, the filter layer 4 consists of three layers from top to bottom: an activated carbon filter, a PP melt-blown filter, and an ultrafiltration membrane filter. These three layers of filters with different filtration precisions work sequentially from top to bottom. The first layer, the activated carbon filter, adsorbs residual pigments, odors, small-molecule organic pollutants, and residual chlorine in the wastewater. It also intercepts some larger suspended impurities, preventing them from directly clogging subsequent filters with higher precision and extending the service life of the PP melt-blown filter and the ultrafiltration membrane filter. Next, the wastewater that has undergone coarse adsorption enters the PP melt-blown filter layer. This layer effectively traps sediment, rust, colloids, and bacterial residues with a particle size greater than 1 micrometer, further reducing the concentration of impurities in the influent and lightening the load on the final ultrafiltration membrane filter layer. Finally, the highest precision ultrafiltration membrane filter can filter out large molecular organic matter, bacteria, insect eggs, and colloidal impurities larger than 0.01 microns in the water. After three layers of filtration, impurities in the wastewater are intercepted in layers, resulting in more stable effluent quality that meets the standards for discharge or reuse after deep treatment. At the same time, the layered filtration structure makes filter replacement more targeted. After a period of use, only the severely clogged front-end filter needs to be replaced, without having to replace the entire set of filters, thus reducing subsequent maintenance costs.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A multi-stage deep environmental protection wastewater treatment device, comprising a shell (1), characterized in that: A water inlet pipe (2) is installed on one side of the top of the housing (1), three electromagnetic valves (3) are installed in the middle of the inner wall of the housing (1), three filter layers (4) are installed at the bottom of the inner wall of the housing (1), a coarse grid plate (5) is provided on the top of the housing (1), a fine grid plate (6) is provided at the bottom of the inner wall of the housing (1), and a float suction device (7) and a baffle plate (8) are also included. The outer side of the shell (1) is provided with a primary treatment mechanism, which allows the coarse grid plate (5) to perform initial filtration of the discharged sewage when it is placed on top of the shell (1), and then deflects itself 180 degrees to dump the collected sewage, garbage and large impurities. The filtering and scooping mechanism is connected to the primary treatment mechanism so that when the coarse grid plate (5) deflects and moves, the fine grid plate (6) moves upward to scoop up the fine impurities of the sewage inside the shell (1). After the coarse grid plate (5) completes the deflection, it also rises to the top area of ​​the shell (1) to deflect backward and dump the waste, thus completing the secondary screening and self-cleaning. Oil layer scum cleaning mechanism, the oil layer scum cleaning mechanism is connected to the multi-stage treatment mechanism so that after the coarse grid plate (5) and the fine grid plate (6) are deflected, the float suction device (7) automatically descends into the sewage surface inside the shell (1) to suck up the oil and scum on the surface of the sewage after secondary filtration, so as to complete the three-stage treatment of sewage. The deflection-type turbulence mechanism works in conjunction with the oil layer scum cleaning mechanism to achieve synchronous deflection of multiple turbulence plates (8), disturbing the water flow surface inside the shell (1), causing the sewage surface to gather at the float suction device (7).

2. The multi-stage deep environmental protection wastewater treatment device according to claim 1, characterized in that: The primary processing unit includes: Two inner plates (9) are provided. A first vertical groove (10) is provided in the middle of the inner plate (9). An outer plate (11) is fixedly connected to the outer side of the inner plate (9). A second vertical groove (12) is provided in the middle of the outer plate (11). A forward plate (13) is slidably connected to the top and bottom of the front end of the outer plate (11) through a guide shell. A guide groove (14) is provided on the surface of the forward plate (13). An electric lead screw (15) is fixedly connected to the surface of the outer plate (11). A lifting slide plate (16) is installed on one side of the electric lead screw (15) through a slide table. A sliding column (17) is fixedly connected to the front end of the lifting slide plate (16). The sliding column (17) is slidably connected to the guide groove (14). The inner wall of the outer plate (11) and the inner plate (9) is provided with a shaped groove (18). A high and low slide bar (19) is provided between the outer plate (11) and the inner plate (9). The top of the high and low slide bar (19) is slidably connected to the inner wall of the first vertical groove (10), and the bottom of the high and low slide bar (19) is slidably connected to the inner wall of the second vertical groove (12). The front end of the coarse grid plate (5) is rotatably connected to the front end of the top of the shell (1) through a shaft. Both sides of the front shaft of the coarse grid plate (5) are fixedly connected to a toothed disc (20). The front end of the forward plate (13) is fixedly connected to a rack plate (21). The top of the inner wall of the rack plate (21) is meshed with the top of the toothed disc (20).

3. The multi-stage deep environmental protection wastewater treatment device according to claim 2, characterized in that: The filtration and salvage mechanism includes: The moving module (22) has the fine grid plate (6) fixedly connected to the bottom of the moving module (22). The two sides of the bottom of the moving module (22) are fixedly connected to one end of the top of the high and low slide bar (19). The top of the second vertical groove (12) is provided with a semi-circular arc groove (23). A guide shell (24) is fixedly connected between the two inner plates (9).

4. The multi-stage deep environmental protection wastewater treatment device according to claim 3, characterized in that: The oil scum removal mechanism includes: A lifting plate (25) is slidably connected to the top of the outer plate (11) via sliders on both sides. A toothed frame (26) is fixedly connected to the top of the lifting plate (25). Two gantry frames (27) are fixedly connected to the top of the two inner plates (9). A rotating shaft (28) is rotatably connected between the two gantry frames (27). The surface of the rotating shaft (28) meshes with the tooth groove on one side of the inner wall of the toothed frame (26) via a fixed gear. The front end of the gantry (27) is fixedly connected to a take-up reel (29), and a rope (30) is wound around the surface of the take-up reel (29). The bottom of the rope (30) is fixedly connected to the float suction device (7). The bottom of the gantry (27) is fixedly connected to an oil treatment device (31). One side of the oil treatment device (31) is connected to the bottom of the float suction device (7) through a conduit. The top of the inner plate (9) is fixedly connected to a spring (32), and the top of the spring (32) is fixedly connected to the lifting plate (25).

5. The multi-stage deep environmental protection wastewater treatment device according to claim 4, characterized in that: The deflection spoiler mechanism includes: The motor (33) is fixedly connected to one side of the housing (1) by a bracket. The output end of the motor (33) is fixedly connected to an eccentric column (34) by a turntable. Both ends of one side of the housing (1) are slidably connected to a reciprocating plate (35) by a sliding rod and a sleeve. The surface of the reciprocating plate (35) is provided with a number of short grooves (36) corresponding to the number of spoilers (8). The top of the reciprocating plate (35) is provided with a moving groove (37). The eccentric column (34) is slidably connected to the inner wall of the moving groove (37). The top of the spoiler (8) is fixedly connected to a protruding rod (38). The protruding rod (38) is slidably connected to the inner wall of the short groove (36). The top and bottom of the spoiler (8) are rotatably connected to the groove on the side of the inner wall of the housing (1) by a rotating shaft.

6. The multi-stage deep environmental protection wastewater treatment device according to claim 2, characterized in that: A positioning rod (39) is fixedly connected to one side of the top of the high and low sliding rod (19). A limiting groove (40) is opened inside the inner plate (9). The positioning rod (39) is slidably connected to the inner wall of the limiting groove (40). The inner wall of the limiting groove (40) is an inverted "J" structure with the side perpendicular to the top semicircle.

7. The multi-stage deep environmental protection wastewater treatment device according to claim 4, characterized in that: The top of the inner plate (9) is fixedly connected to a guide frame (41), and the front end of the guide frame (41) has a hole through which the rope (30) passes.

8. The multi-stage deep environmental protection wastewater treatment device according to claim 1, characterized in that: The filter layer (4) is divided into three layers from top to bottom: activated carbon filter element, PP melt-blown filter element and ultrafiltration membrane filter element.

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