Wisdom water affair sewage treatment and discharge device and method

Abstract

The invention relates to the technical field of sewage treatment, and discloses an intelligent water affair sewage treatment discharge device and method.The intelligent water affair sewage treatment discharge device comprises a treatment tank, the bottom of the treatment tank is communicated with a drainage pipe, a transverse plate is arranged on the treatment tank, a stirring rod is rotationally installed on the transverse plate, and the stirring rod and the treatment tank are coaxially arranged; the inner floating bag and the outer floating bag are matched with vortex liquid level linkage to adjust the inclination angle of the rotating frame, gaps of the vertical rods are driven to be adaptively contracted and expanded, meanwhile, a radial increasing gap structure is matched, the migration rule of oil drops from small to large and from scattering to gathering is perfectly matched, and the oil drops are uniformly dispersed. The oil-water separator breaks an emulsified oil film to realize high-efficiency coalescence, also prevents formed large oil drops from being broken, solves the problems that a fixed separation part cannot adapt to oil drop changes and secondary emulsification is easy to aggravate, and greatly improves the oil-water separation efficiency.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, specifically to a smart water management wastewater treatment and discharge device and method. Background Technology

[0002] Generally speaking, oily wastewater treatment is a key link in smart water management and water environment governance. The treatment effect is directly related to the compliance of water discharge with standards and ecological environmental protection. However, in actual oily wastewater treatment operations, oil-water separation is the core difficulty, which directly affects the quality of effluent and treatment efficiency. Most conventional oily wastewater treatment devices at present only scrape off and clean large floating oil particles on the water surface, without deep treatment of dispersed oil and emulsified oil in the water. This results in emulsified oil remaining in the water for a long time, causing the oil content of the effluent to exceed the standard and fail to meet the discharge standards. Existing devices use strong stirring to agitate the oil and water, which can cause oil droplets to float, but excessive stirring will break up large pieces of floating oil and agglomerated oil droplets again, exacerbating the degree of emulsification in the water and making it more difficult to separate small oil droplets. Moreover, after the oil droplets float and accumulate on the water surface, they cannot be discharged from the wastewater in time, which will lead to the accumulation of floating oil and its re-mixing into the wastewater, further increasing the difficulty of treatment. Based on this, the present invention aims to provide a smart water wastewater treatment and discharge device and method that can achieve efficient demulsification and agglomeration of emulsified oil and avoid secondary emulsification of floating oil. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a smart water management wastewater treatment and discharge device and method to solve the technical problems in the prior art.

[0004] The objective of this invention can be achieved through the following technical solutions: A smart water management wastewater treatment and discharge device, comprising: The treatment tank has a drain pipe connected to its bottom. A horizontal plate is installed on the treatment tank, and a stirring rod is rotatably mounted on the horizontal plate. The stirring rod is coaxially arranged with the treatment tank and is driven to rotate by a servo motor fixedly mounted on the horizontal plate. An inner float plate is sleeved on the outer circumference of the stirring rod, and there is a gap between the inner float plate and the stirring rod. An inner float bladder is fixedly installed at the bottom of the inner float plate and floats on the surface of the sewage. An external float plate is provided, with an external float bladder fixedly installed at its bottom. The external float bladder floats on the surface of the sewage. A connecting rod is fixedly installed on the external float plate, and a positioning pin is fixedly installed on the connecting rod. A rotating frame is located below the sewage surface and is arranged radially along the treatment tank. One end of the rotating frame is rotatably connected to the inner float plate, and the other end of the rotating frame has a groove in which the positioning pin is slidably installed. Multiple equally spaced mounting rings are rotatably installed inside the rotating frame, and these mounting rings are arranged radially along the treatment tank. Each mounting ring has a vertical rod, and there is a gap between adjacent vertical rods. When the servo motor drives the stirring rod to rotate, the sewage forms a vortex, causing the inner float plate to descend and the outer float plate to rise. At this time, the rotating frame rotates to an inclined arrangement, and the horizontal height of the end of the rotating frame near the axis of the treatment tank is lower than the horizontal height of the end of the rotating frame near the wall of the treatment tank. The rotation of the mounting rings keeps the vertical rods vertical, and the gap distance decreases.

[0005] As a further embodiment of the present invention: a limiting plate is fixedly installed at the bottom of the horizontal plate, the inner floating plate is slidably installed inside the limiting plate, and a guide rod is fixedly installed at the top of the outer floating plate, the guide rod being slidably inserted into the horizontal plate.

[0006] As a further embodiment of the present invention: a circular plate is fixedly installed at the top of the guide rod. The circular plate is located above the horizontal plate, and the diameter of the circular plate is larger than the diameter of the guide rod. When the sewage in the treatment tank is emptied, the circular plate abuts against the top of the horizontal plate, and the inner float slides down to the bottom of the limiting plate. At this time, the vertical rod is located above the bottom plate of the treatment tank.

[0007] As a further aspect of the present invention, the gap distance increases along the direction from the inner float to the outer float.

[0008] As a further embodiment of the present invention: the vertical rod is rotatably mounted within the mounting ring.

[0009] As a further embodiment of the present invention: a sleeve is fitted onto the outer circular surface of the top of the treatment tank, an oil collection groove is formed between the sleeve and the treatment tank, an oil drain pipe is connected to the bottom of the sleeve, the oil drain pipe is connected to the oil collection groove, the horizontal height of the edge of the sleeve is higher than the horizontal height of the top of the treatment tank, and the horizontal plate is fixedly installed on the top of the sleeve.

[0010] As a further embodiment of the present invention: an oil extraction pipe is fixedly installed on the horizontal plate, the oil extraction pipe is connected to an external power pump, an electric cylinder is fixedly installed on the horizontal plate, a fixed plate is fixedly installed on the movable end of the electric cylinder, a water suction head is fixedly installed on the fixed plate, and the water suction head is connected to the oil extraction pipe through a telescopic pipe.

[0011] A wastewater treatment and discharge method for smart water management, the method being applied to a wastewater treatment and discharge device for smart water management as described above, the method comprising the following steps: Step S1: The oily wastewater is injected into the treatment tank at a uniform speed. The wastewater level gradually rises until the inner and outer floats at the bottom are lifted and floated. The inner and outer floats rise synchronously with the liquid level. The rotating frame is evenly supported by the inner and outer floats and is in a horizontal arrangement. The installation ring drives the vertical rods to stand upright naturally, and all the vertical rods are stably located below the wastewater surface. Large oil flakes with a density less than water in the wastewater quickly float to the surface under the action of natural buoyancy and initially gather in the water surface area, completing the initial separation of oil flakes in the initial stage of liquid inlet. Step S2: Start the servo motor to drive the stirring rod to rotate at high speed in one direction, centrifugally stirring the sewage in the treatment tank, so that the sewage forms a stable conical vortex liquid surface with a low center and a high edge. Under the action of the vortex liquid surface, the inner float near the stirring rod descends with the central liquid surface, and the outer float near the treatment tank wall rises with the edge liquid surface, thereby driving the inner float plate to move down and the outer float plate to move up, so that the rotating frame changes from a horizontal state to an inclined state. At the same time, the mounting ring deflects synchronously with the frame and rotates adaptively, always keeping the vertical rods vertically arranged, and the gap between adjacent vertical rods automatically shrinks as the rotating frame tilts. Step S3: The centrifugal force field generated by stirring continues to act, causing the small oil droplets and emulsified oil droplets that have not floated to the surface in the wastewater to migrate radially from the center of the treatment tank towards the tank wall. When the emulsified oil droplets collide with the vertically arranged vertical rods with the water flow, they are broken by slight collision and compression. After demulsification, the small oil droplets pass through the gaps between the vertical rods under the influence of centrifugal force and water flow. They collide and merge repeatedly in the gap area, gradually aggregating from small oil droplets into large oil droplets, realizing the transformation from dispersion to aggregation and from small to large. Combined with the guidance of centrifugal force, the large oil droplets continue to move towards the tank wall area and eventually float to the liquid surface, merging with the initial floating oil to form a continuous and thick floating oil layer, avoiding the dispersion of floating oil that is difficult to collect. Step S4: After the floating oil on the liquid surface is completely enriched and the oil and water in the tank are separated, the servo motor reduces its speed or stops stirring. The vortex gradually disappears, the liquid surface returns to a horizontal state, the rotating frame returns to a horizontal state, and the vertical rod gap is adaptively reset. At this time, the floating oil enriched on the top of the tank wall is collected and discharged, completing the oil-sludge separation. The purified wastewater is stably discharged through the drain pipe at the bottom of the treatment tank, realizing the entire process of purification and discharge of oily wastewater.

[0012] The beneficial effects of this invention are: 1. In this invention, the tilt angle of the rotating frame is adjusted by the inner and outer floats in conjunction with the vortex liquid surface, which drives the vertical rod gap to adaptively expand and contract. At the same time, the radially increasing gap structure perfectly adapts to the migration law of oil droplets from small to large and from scattered to aggregate. This not only breaks up the emulsified oil film to achieve efficient aggregation, but also avoids breaking up the already formed large oil droplets. This solves the problem that the fixed separation component cannot adapt to the changes in oil droplets and is prone to aggravating secondary emulsification, thus greatly improving the oil-water separation efficiency.

[0013] 2. In this invention, the vertical rod is positioned entirely below the liquid surface and rotates adaptively with the mounting ring to maintain a vertical state. This prevents the oil layer on the water surface from being broken, while the centrifugal force of the vortex concentrates the oil droplets onto the cylinder wall. Combined with the sleeve and the oil collection tank, oil is separated and discharged simultaneously, preventing the oil from being stirred back into the sewage after accumulation. At the same time, it deeply treats dispersed oil and emulsified oil, avoiding the problem of traditional devices only cleaning the surface oil and the oil content of the effluent exceeding the standard, thus ensuring that the water body meets the discharge standards.

[0014] 3. In this invention, the vortex formed by stirring raises the edge liquid level, which can push the oil accumulated on the water surface into the oil accumulation tank in real time and discharge it through the oil discharge pipe, so that sewage treatment and oil discharge can be carried out simultaneously without stopping stirring and waiting for the oil to accumulate. This not only shortens the overall treatment time, but also completely avoids the oil from being broken up and mixed with secondary pollution while remaining on the water surface, further improving the continuity and cleanliness of sewage treatment. Attached Figure Description

[0015] The invention will now be further described with reference to the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the cross-sectional structure of the processing tank in this invention; Figure 3 This is a schematic diagram of the tilted rotating frame in this invention; Figure 4 This is a schematic diagram of the rotating frame in this invention; Figure 5 This is a schematic diagram of the disassembled mounting ring and rotating frame in this invention; Figure 6 This is a schematic diagram of the structure in this invention where the connecting rod and the rotating frame are separated.

[0017] In the diagram: 1. Processing tank; 101. Drain pipe; 2. Sleeve; 201. Oil collection tank; 202. Oil drain pipe; 3. Horizontal plate; 4. Stirring rod; 5. Servo motor; 6. Rotating frame; 7. Mounting ring; 8. Vertical rod; 9. Inner float plate; 10. Inner float bladder; 11. Limiting plate; 12. Outer float plate; 13. Outer float bladder; 14. Connecting rod; 15. Positioning pin; 16. Slide groove; 17. Guide rod; 18. Circular plate; 19. Oil suction pipe; 20. Telescopic pipe; 21. Water suction head; 22. Electric cylinder; 23. Fixing plate; 24. Gap. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-6 As shown, the present invention is a smart water management wastewater treatment and discharge device, comprising: Treatment tank 1, with a drain pipe 101 connected to the bottom of the treatment tank 1, a horizontal plate 3 is provided on the treatment tank 1, and a stirring rod 4 is rotatably installed on the horizontal plate 3. The stirring rod 4 is coaxially arranged with the treatment tank 1, and the stirring rod 4 is driven to rotate by a servo motor 5 fixedly installed on the horizontal plate 3. An inner float plate 9 is sleeved on the outer circular surface of the stirring rod 4, and there is a gap between the inner float plate 9 and the stirring rod 4. An inner float bladder 10 is fixedly installed at the bottom of the inner float plate 9, and the inner float bladder 10 floats on the surface of the sewage liquid. An outer float plate 12 is provided, and an outer float 13 is fixedly installed at the bottom of the outer float plate 12. The outer float 13 floats on the surface of the sewage liquid. A connecting rod 14 is fixedly installed on the outer float plate 12, and a positioning pin 15 is fixedly installed on the connecting rod 14. A rotating frame 6 is located below the sewage surface and is arranged radially along the treatment tank 1. One end of the rotating frame 6 is rotatably connected to the inner float 9, and the other end of the rotating frame 6 has a sliding groove 16. The positioning pin 15 is slidably installed in the sliding groove 16. Multiple equally spaced mounting rings 7 are rotatably installed inside the rotating frame 6, and the multiple mounting rings 7 are arranged radially along the treatment tank 1. Each mounting ring 7 is provided with a vertical rod 8, and there is a gap 24 between two adjacent vertical rods 8. When the servo motor 5 drives the stirring rod 4 to rotate, the sewage forms a vortex, causing the inner float 9 to descend and the outer float 12 to rise. At this time, the rotating frame 6 rotates to an inclined arrangement, and the horizontal height of the end of the rotating frame 6 near the axis of the treatment tank 1 is lower than the horizontal height of the end of the rotating frame 6 near the cylinder wall of the treatment tank 1. The rotation of the mounting rings 7 keeps the vertical rods 8 vertically arranged, and the gap 24 decreases.

[0020] In one embodiment of this invention, it should be noted that the servo motor 5 described in this invention is prior art, and this invention does not improve upon it. Therefore, it is not necessary to disclose its specific mechanical and circuit structures, and this does not affect the integrity of this invention.

[0021] The working principle of this invention is as follows: Oily wastewater is injected into the treatment tank 1 at a uniform speed. The wastewater level gradually rises, supporting the inner float 10 and the outer float 13, so that the inner float plate 9 and the outer float plate 12 are raised synchronously. At this time, the rotating frame 6 is evenly supported by the inner and outer float plates and is in a horizontal state. The mounting ring 7 drives the vertical rod 8 to be naturally vertical and all located below the liquid surface, avoiding breaking the initial oil layer. Large pieces of oil in the wastewater quickly float to the liquid surface under natural buoyancy and are initially enriched, completing the initial oil pre-separation in the initial stage of liquid inlet. The servo motor 5 is started to drive the stirring rod 4 to rotate at high speed, centrifugally stirring the sewage to form a conical vortex liquid surface with a low center and high edges. The inner float 10 descends with the central liquid surface, driving the inner float plate 9 to slide down along the limiting plate 11. The outer float 13 rises with the edge liquid surface, driving the outer float plate 12 and guide rod 17 to move upward. The positioning pin 15 on the connecting rod 14 slides along the slide groove 16, driving the rotating frame 6 to change from horizontal to inclined. Since the mounting ring 7 is rotatably installed in the rotating frame 6, the vertical rod 8 always tends to be vertically arranged under its own gravity. During the tilting and deflection of the rotating frame 6, the mounting ring 7 rotates adaptively relative to the rotating frame 6 to offset the angular offset caused by the tilt of the frame, ensuring that the vertical rod 8 always remains vertical during stirring and oil-water migration. The gap 24 between adjacent vertical rods 8 automatically shrinks as the rotating frame 6 tilts, adapting to the demulsification and coalescence requirements of fine emulsified oil. The centrifugal force field generated by stirring continuously causes the small oil droplets and emulsified oil droplets that have not floated to the surface in the wastewater to migrate radially from the center of the treatment tank 1 towards the cylinder wall. The emulsified oil droplets collide with the vertical rod 8 with the water flow, and the surface emulsification film is broken by slight collision and squeezing, thus breaking the stable emulsion state. The vertical rod 8 can rotate with the water flow, which not only avoids strong shearing that breaks the oil droplets, but also guides the oil droplets to smoothly enter the gap 24. The small oil droplets after demulsification collide and merge repeatedly in the gap 24, gradually aggregating into large oil droplets, realizing the transformation from scattered to aggregated, and from small to large. After the floating oil on the liquid surface is completely enriched and the oil and water in the tank are separated, the servo motor 5 reduces the speed or stops stirring, the vortex gradually disappears, the liquid surface returns to horizontal, the rotating frame 6 returns to the horizontal state, and the vertical rod gap 24 self-resets. At this time, the floating oil enriched at the top of the tank wall is collected and discharged, completing the oil-sludge separation. The purified wastewater is stably discharged through the drain pipe 101 at the bottom of the treatment tank 1, realizing the entire process of purification and discharge of oily wastewater.

[0022] like Figures 1-6 As shown, in a preferred embodiment of the present invention, a limiting plate 11 is fixedly installed at the bottom of the horizontal plate 3, the inner floating plate 9 is slidably installed in the limiting plate 11, and a guide rod 17 is fixedly installed at the top of the outer floating plate 12, the guide rod 17 being slidably inserted into the horizontal plate 3.

[0023] Specifically, a circular plate 18 is fixedly installed at the top of the guide rod 17. The circular plate 18 is located above the horizontal plate 3, and the diameter of the circular plate 18 is larger than the diameter of the guide rod 17. When the sewage in the treatment tank 1 is emptied, the circular plate 18 abuts against the top of the horizontal plate 3, and the inner float 9 slides down to the bottom of the limiting plate 11. At this time, the vertical rod 8 is located above the bottom plate of the treatment tank 1.

[0024] In practical application, the limiting plate 11 restricts the inner float 9 to only perform vertical lifting and lowering movements, preventing the inner float 9 from drifting with the water flow in the treatment tank 1, while ensuring the stability of the gap between the inner float 9 and the stirring rod 4, and eliminating stirring interference; the guide rod 17 constrains the outer float 12 to lift and lower vertically along the cylinder wall, ensuring smooth switching between the horizontal and inclined states of the rotating frame 6; the circular plate 18 can suspend the outer float 12 during sewage discharge, and together with the limiting plate 11 to limit the inner float 9, it prevents the rotating frame 6 from falling and causing the vertical rod 8 to hit the bottom of the tank, thus extending the service life of the components.

[0025] like Figures 1-3 As shown, in a preferred embodiment of the present invention, the distance of the gap 24 increases along the direction from the inner float 9 toward the outer float 12.

[0026] In practical application, the centrifugal force generated by the vortex of the wastewater will drive the oil droplets in the wastewater to migrate from the center of the treatment tank 1 to the cylinder wall. The volume of the oil droplets gradually increases as they collide and coalesce. The small gap in the central area is suitable for the demulsification and coalescence of fine emulsion oil, while the large gap in the edge area prevents large oil droplets from being broken. This adapts to the changing pattern of oil droplets from small to large, avoiding the problem that fixed gaps cannot match the growth of oil droplets and are prone to secondary emulsification, thus improving the efficiency of oil accumulation and discharge.

[0027] like Figures 1-4 As shown, in a preferred embodiment of the present invention, the vertical rod 8 is rotatably mounted within the mounting ring 7.

[0028] In practical application, the impact of water flow and oil droplets on the vertical rod 8 can cause it to rotate. This achieves demulsification of emulsified oil through gentle collision, and also guides water flow and oil droplets to pass smoothly through the gap 24, enhancing the collision and coalescence effect of oil droplets, avoiding strong shearing and breaking up of oil droplets. At the same time, the rotating vertical rod 8 is less likely to adhere to oil stains, reducing the risk of blockage and ensuring the continuity of demulsification and coalescence.

[0029] like Figures 1-3 As shown, in a preferred embodiment of the present invention, a sleeve 2 is fitted onto the outer circular surface of the top of the treatment tank 1, and an oil collection groove 201 is formed between the sleeve 2 and the treatment tank 1. An oil drain pipe 202 is connected to the bottom of the sleeve 2, and the oil drain pipe 202 is connected to the oil collection groove 201. The horizontal height of the edge of the sleeve 2 is higher than the horizontal height of the top of the treatment tank 1, and the horizontal plate 3 is fixedly installed on the top of the sleeve 2.

[0030] In practical application, the vortex causes the edge liquid level to rise, and the accumulated floating oil flows over the top of the treatment tank 1 and enters the oil collection tank 201 with the water flow. It is then discharged in real time through the oil discharge pipe 202, realizing the simultaneous separation of oil and water and discharge of floating oil. This avoids the problem of floating oil being stirred and broken up after accumulating in large quantities and returning to the sewage, eliminates secondary emulsification, and ensures that the effluent does not contain floating oil impurities.

[0031] like Figures 1-3 As shown, in a preferred embodiment of the present invention, an oil extraction pipe 19 is fixedly installed on the horizontal plate 3, the oil extraction pipe 19 is connected to an external power pump, an electric cylinder 22 is fixedly installed on the horizontal plate 3, a fixed plate 23 is fixedly installed on the movable end of the electric cylinder 22, a water suction head 21 is fixedly installed on the fixed plate 23, and the water suction head 21 is connected to the oil extraction pipe 19 through a telescopic pipe 20.

[0032] In one embodiment of this invention, it should be noted that the external power pump and electric cylinder 22 described in this invention are prior art. This invention does not improve them. Therefore, it is not necessary to disclose their specific mechanical and circuit structures, and this does not affect the integrity of this invention.

[0033] In practical applications, the floating oil remaining on the sewage after continuous oil discharge can be precisely brought close to the liquid surface by the electric cylinder 22 driving the suction head 21, and then completely extracted by the oil extraction pipe 19. In this way, the oil collection tank 201 can achieve complete collection of floating oil. The telescopic pipe 20 can be adapted to the lifting stroke of the suction head 21 to ensure that the residual oil is completely extracted, thus solving the problem of substandard effluent caused by residual floating oil.

[0034] Please see Figures 1-6 As shown, the present invention is a wastewater treatment and discharge method for smart water management. The method is applied to a wastewater treatment and discharge device for smart water management as described in the above embodiments, and the method includes the following steps: Step S1: The oily wastewater is injected into the treatment tank 1 at a uniform speed. The wastewater level gradually rises until the inner float 10 and outer float 13 at the bottom are lifted and floated. The inner float 9 and outer float 12 rise synchronously with the liquid level. The rotating frame 6 is evenly supported by the inner and outer floats and is in a horizontal arrangement. The installation ring 7 drives the vertical rod 8 to stand upright naturally, and all the vertical rods 8 are stably located below the wastewater surface. Large pieces of floating oil with a density less than water in the wastewater quickly float to the surface under the action of natural buoyancy and initially gather in the water surface area, completing the initial separation of floating oil in the initial stage of liquid inlet. Step S2: Start the servo motor 5 and drive the stirring rod 4 to rotate at high speed in one direction to centrifuge the sewage in the treatment tank 1, so that the sewage forms a stable conical vortex liquid surface with a low center and a high edge. Under the action of the vortex liquid surface, the inner float 10 located near the stirring rod 4 descends with the central liquid surface, and the outer float 13 near the wall of the treatment tank 1 rises with the edge liquid surface, thereby driving the inner float 9 to move down and the outer float 12 to rise, so that the rotating frame 6 changes from a horizontal state to an inclined state. At the same time, the mounting ring 7 deflects synchronously with the frame and rotates adaptively, always keeping the vertical rod 8 vertically arranged. The gap 24 between adjacent vertical rods 8 automatically shrinks as the rotating frame 6 tilts. Step S3: The centrifugal force field generated by stirring continues to act, causing the small oil droplets and emulsified oil droplets that have not floated to the surface in the sewage to migrate radially from the center of the treatment tank 1 towards the tank wall. When the emulsified oil droplets collide with the vertically arranged vertical rods 8 with the water flow, they are broken by slight collision and compression. After demulsification, the small oil droplets pass through the gaps 24 between the vertical rods 8 under the influence of centrifugal force and water flow. They collide and merge repeatedly in the gap area, gradually aggregating from small oil droplets into large oil droplets, realizing the transformation from dispersion to aggregation and from small to large. Combined with the centrifugal force guidance, the large oil droplets continue to move towards the tank wall area and eventually float to the liquid surface, merging with the initial floating oil to form a continuous and thick floating oil layer, avoiding the floating oil from being dispersed and difficult to collect. Step S4: After the floating oil on the liquid surface is completely enriched and the oil and water in the tank are separated, the servo motor 5 reduces its speed or stops stirring, the vortex gradually disappears, the liquid surface returns to horizontal, the rotating frame 6 returns to the horizontal state, and the vertical rod gap 24 self-resets. At this time, the floating oil enriched on the top of the tank wall is collected and discharged, completing the oil-sludge separation. The purified wastewater is stably discharged through the drain pipe 101 at the bottom of the treatment tank 1, realizing the entire process of purification and discharge of oily wastewater.

[0035] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A smart water management wastewater treatment and discharge device, characterized in that, include: A treatment tank (1) is connected to a drain pipe (101) at the bottom. A horizontal plate (3) is provided on the treatment tank (1). A stirring rod (4) is rotatably installed on the horizontal plate (3). The stirring rod (4) is coaxially arranged with the treatment tank (1). The stirring rod (4) is driven to rotate by a servo motor (5) fixedly installed on the horizontal plate (3). An inner float plate (9) is sleeved on the outer circular surface of the stirring rod (4), and there is a gap between the inner float plate (9) and the stirring rod (4). An inner float bladder (10) is fixedly installed at the bottom of the inner float plate (9). The inner float bladder (10) floats on the surface of the sewage liquid. An outer float plate (12) is provided, and an outer float bladder (13) is fixedly installed at the bottom of the outer float plate (12). The outer float bladder (13) floats on the surface of the sewage liquid. A connecting rod (14) is fixedly installed on the outer float plate (12), and a positioning pin (15) is fixedly installed on the connecting rod (14). A rotating frame (6) is located below the sewage surface and is arranged radially along the treatment tank (1). One end of the rotating frame (6) is rotatably connected to the inner float plate (9), and the other end of the rotating frame (6) is provided with a sliding groove (16). The positioning pin (15) is slidably installed in the sliding groove (16). Multiple equally spaced mounting rings (7) are rotatably installed inside the rotating frame (6). The multiple mounting rings (7) are arranged radially along the treatment tank (1), and each mounting ring (7) is provided with There are vertical rods (8), and there is a gap (24) between two adjacent vertical rods (8). When the servo motor (5) drives the stirring rod (4) to rotate, the sewage forms a vortex, causing the inner float (9) to descend and the outer float (12) to rise. At this time, the rotating frame (6) rotates to be inclined. The horizontal height of the end of the rotating frame (6) near the axis of the treatment tank (1) is lower than the horizontal height of the end of the rotating frame (6) near the cylinder wall of the treatment tank (1). The mounting ring (7) rotates so that the vertical rods (8) remain vertically arranged. At this time, the gap (24) distance decreases.

2. The smart water management wastewater treatment and discharge device according to claim 1, characterized in that, A limiting plate (11) is fixedly installed at the bottom of the horizontal plate (3), the inner floating plate (9) is slidably installed inside the limiting plate (11), and a guide rod (17) is fixedly installed at the top of the outer floating plate (12). The guide rod (17) is slidably inserted into the horizontal plate (3).

3. The smart water management wastewater treatment and discharge device according to claim 1, characterized in that, A circular plate (18) is fixedly installed at the top of the guide rod (17). The circular plate (18) is located above the horizontal plate (3), and the diameter of the circular plate (18) is larger than the diameter of the guide rod (17). When the sewage in the treatment tank (1) is emptied, the circular plate (18) abuts against the top of the horizontal plate (3), and the inner float plate (9) slides down to the bottom of the limiting plate (11). At this time, the vertical rod (8) is located above the bottom plate of the treatment tank (1).

4. The smart water management wastewater treatment and discharge device according to claim 1, characterized in that, The distance of the gap (24) increases along the direction from the inner float (9) toward the outer float (12).

5. A smart water management wastewater treatment and discharge device according to claim 1, characterized in that, The vertical rod (8) is rotatably installed inside the mounting ring (7).

6. A smart water management wastewater treatment and discharge device according to claim 1, characterized in that, A sleeve (2) is fitted onto the outer circular surface of the top of the treatment tank (1). An oil collection groove (201) is formed between the sleeve (2) and the treatment tank (1). An oil drain pipe (202) is connected to the bottom of the sleeve (2). The oil drain pipe (202) is connected to the oil collection groove (201). The horizontal height of the edge of the sleeve (2) is higher than the horizontal height of the top of the treatment tank (1). The horizontal plate (3) is fixedly installed on the top of the sleeve (2).

7. A smart water management wastewater treatment and discharge device according to claim 1, characterized in that, An oil extraction pipe (19) is fixedly installed on the horizontal plate (3). The oil extraction pipe (19) is connected to an external power pump. An electric cylinder (22) is fixedly installed on the horizontal plate (3). A fixed plate (23) is fixedly installed on the movable end of the electric cylinder (22). A water suction head (21) is fixedly installed on the fixed plate (23). The water suction head (21) is connected to the oil extraction pipe (19) through a telescopic pipe (20).

8. A smart water management method for wastewater treatment and discharge, characterized in that, The method is applied to a smart water management wastewater treatment and discharge device as described in any one of claims 1-7, and the method includes the following steps: Step S1: The oily wastewater is injected into the treatment tank (1) at a uniform speed. The wastewater level gradually rises until the inner float (10) and outer float (13) at the bottom are lifted and floated. The inner float (9) and outer float (12) are raised synchronously with the liquid level. The rotating frame (6) is evenly supported by the inner and outer floats and is in a horizontal arrangement. The installation ring (7) drives the vertical rod (8) to be naturally vertical and all the vertical rods (8) are stably located below the wastewater surface. Large pieces of floating oil with a density less than water in the wastewater quickly float to the surface under the action of natural buoyancy and initially gather in the water surface area, completing the initial separation of floating oil in the initial stage of liquid inlet. Step S2: Start the servo motor (5) and drive the stirring rod (4) to rotate at high speed in one direction to centrifuge the sewage in the treatment tank (1) so that the sewage forms a stable conical vortex liquid surface with a low center and a high edge. Under the action of the vortex liquid surface, the inner float (10) located near the stirring rod (4) drops with the central liquid surface, and the outer float (13) near the wall of the treatment tank (1) rises with the edge liquid surface, thereby driving the inner float (9) to move down and the outer float (12) to rise, so that the rotating frame (6) changes from a horizontal state to an inclined state. At the same time, the mounting ring (7) deflects synchronously with the frame and rotates adaptively, always keeping the vertical rod (8) vertically arranged. The gap (24) between adjacent vertical rods (8) automatically shrinks as the rotating frame (6) tilts. Step S3: The centrifugal force field formed by stirring continues to act, causing the small oil droplets and emulsified oil droplets that have not floated to the surface in the sewage to migrate radially from the center of the treatment tank (1) towards the cylinder wall. When the emulsified oil droplets collide with the vertically arranged vertical rods (8) with the water flow, they are broken by slight collision and compression. The small oil droplets after demulsification pass through the gaps (24) between the vertical rods (8) under the centrifugal force and water flow. They collide and merge repeatedly in the gap area, gradually gathering from small oil droplets into large oil droplets, realizing the transformation from dispersion to aggregation and from small to large. Combined with the centrifugal force guidance, the large oil droplets continue to move towards the tank wall area and eventually float to the liquid surface, merging with the initial floating oil to form a continuous and thick floating oil layer, avoiding the floating oil from being dispersed and difficult to collect. Step S4: After the floating oil on the liquid surface is completely enriched and the oil and water in the tank are separated, the servo motor (5) reduces the speed or stops stirring, the vortex gradually disappears, the liquid surface returns to horizontal, the rotating frame (6) returns to the horizontal state, and the vertical rod gap (24) is adaptively reset. At this time, the floating oil enriched on the top of the tank wall is collected and discharged, completing the oil-sludge separation. The purified sewage is stably discharged through the drain pipe (101) at the bottom of the treatment tank (1), realizing the entire process of purification and discharge of oily sewage.

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