High-efficiency aeration device for sewage treatment

Abstract

The invention discloses a high-efficiency aeration device for sewage treatment, relates to the technical field of sewage treatment, and aims to solve the technical problems that an existing aeration device is single in aeration mode and difficult to consider basic oxygen supply and enhanced mixing requirements, the high-efficiency aeration device comprises a plurality of aeration discs, each aeration disc comprises an aeration pipe and a supporting assembly, the supporting assembly comprises a lower supporting pipe and an upper supporting pipe, a plurality of control rods are movably arranged at the top of the upper supporting pipe, the tops of the control rods are movably connected with an aeration cover, a plurality of aeration holes are formed in the top of the aeration cover, a lifting cylinder is slidably arranged on the circumferential outer wall of the upper supporting pipe, and the top of the lifting cylinder is connected with a gas collecting cover through a plurality of fixing rods; the aeration hoods are rotationally arranged between every two gas collecting hoods, the plurality of aeration hoods and the plurality of gas collecting hoods can be combined to form an umbrella-shaped hood body or an explosive hood body, and the output end of the aeration pipe is arranged below the umbrella-shaped hood body. The device has the advantages that continuous basic aeration is realized, oxygen is provided for microorganisms in sewage, and sewage disturbance and oxygen diffusion efficiency are enhanced.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and more specifically, to a high-efficiency aeration device for wastewater treatment. Background Technology

[0002] In wastewater treatment systems, aeration devices are core equipment. Their core function is to provide the necessary oxygen for the survival and metabolism of microorganisms in the water by forcibly introducing air into the wastewater, while enhancing the mixing effect of wastewater and activated sludge, thereby accelerating the decomposition and removal of pollutants.

[0003] In existing technologies, aeration devices for wastewater treatment mainly include blower aeration and mechanical aeration. Blower aeration uses an air pump to deliver air through air pipes to the aeration discs, and then discharges the air into the wastewater through the air holes on the aeration discs. Mechanical aeration uses impellers and other mechanical components to rotate and agitate the wastewater, allowing air to integrate into the water. However, existing aeration devices in practical applications are relatively simple, mostly involving continuous and stable air output. When continuous low-volume aeration is used, the oxygen diffusion range is limited, the wastewater and activated sludge are not fully mixed, and the contact efficiency between microorganisms and pollutants is low, affecting the degradation rate. While continuous high-volume aeration can enhance the mixing effect, it significantly increases energy consumption and excessively disperses sludge flocs, damaging the microbial living environment and potentially indirectly affecting the effective utilization efficiency of oxygen by microorganisms. In view of this, we propose a high-efficiency aeration device for wastewater treatment. Summary of the Invention

[0004] The purpose of this invention is to provide a high-efficiency aeration device for wastewater treatment, so as to solve the technical problems of existing aeration devices having a single aeration mode and being unable to meet the needs of basic oxygen supply and enhanced mixing.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a high-efficiency aeration device for sewage treatment, comprising an air pump, an air supply pipe connected to the output end of the air pump, and a plurality of aeration discs arranged at the output end of the air supply pipe; each aeration disc includes an aeration pipe connected to the output end of the air supply pipe and a support assembly, the support assembly including a lower support pipe and an upper support pipe, the top of the lower support pipe being connected to the bottom of the upper support pipe via a plurality of connecting columns, a plurality of control rods being movably arranged at the top of the upper support pipe, and an aeration hood being movably connected to the top of each control rod; there are multiple aeration hoods, and multiple aeration openings are provided at the top of each aeration hood. Air vents; a lifting cylinder is slidably arranged on the outer circumference of the upper support pipe, and a gas collecting hood is connected to the top of the lifting cylinder by multiple fixed rods. There are multiple gas collecting hoods; the aeration hood is rotatably arranged between every two gas collecting hoods, and multiple aeration hoods and multiple gas collecting hoods can be combined to form an umbrella-shaped hood or an explosive hood. The output end of the aeration pipe is arranged below the umbrella-shaped hood. Part of the air output by the aeration pipe can be discharged by the umbrella-shaped hood through multiple aeration holes, and another part can be collected in the inner cavity of the umbrella-shaped hood. The explosive hood can quickly aerate the air collected in the inner cavity of the umbrella-shaped hood to the surroundings.

[0006] Preferably, the support assembly further includes a base frame, which is connected to the outer circumferential wall of the lower support tube, and the aeration tube passes through the inner cavity of the lower support tube and extends to the top of the upper support tube.

[0007] Preferably, the gas collecting hood has an arc-shaped structure, and the bottom of the gas collecting hood is connected to a guide arc block and multiple rotating shafts. The bottom of the guide arc block is connected to the top of the lifting cylinder through one of the fixed rods, and the axes of the rotating shafts of every two gas collecting hoods are aligned. The aeration hood is rotatably engaged with the side wall of the gas collecting hood through the rotating shafts.

[0008] Preferably, the bottom of the gas collecting hood is provided with an outlet one, and the bottom of the aeration hood is provided with an outlet two; when the tops of the multiple aeration hoods and the multiple gas collecting hoods are kept on the same horizontal plane, the multiple aeration hoods and the multiple gas collecting hoods are combined to form the umbrella-shaped hood; when the aeration hood rotates around the side wall of the gas collecting hood through the rotating shaft one, the multiple aeration hoods and the multiple gas collecting hoods are combined to form the explosion-shaped hood, at which time the output direction of the outlet two of the aeration hood is obliquely upward.

[0009] Preferably, the top of the aeration hood is a pointed structure, and the bottom of the pointed structure is connected to a second rotating shaft. The aeration hood is rotatably connected to the top of the control rod through the second rotating shaft. When the buoyancy generated by the air collected in the inner cavity of the air collecting hood pushes the air collecting hood to rise, the air collecting hood can drive the aeration hood to rise through the first rotating shaft. The aeration hood can be pulled by the control rod, so that the upward motion of the aeration hood is converted into a rotational motion around the side wall of the air collecting hood.

[0010] Preferably, the outer circumferential wall of the lifting cylinder is connected to a hook plate, and the bottom of the hook plate is integrally formed with a hook head; the bottom of the upper support tube is connected to multiple wedge plates, and the hook plate is movably arranged between two of the wedge plates, the bottom of the wedge plates having an inclined structure; multiple guide rods are also arranged between the lower support tube and the upper support tube, and movable blocks are slidably arranged on the guide rods, the top of the movable block is connected to the bottom of the upper support tube by a spring, a locking block is slidably arranged in the inner cavity of the movable block, a sliding column is connected to the side wall of the locking block, the sliding column movably passes through the side wall of the movable block and is connected to a limit plate, a second spring is sleeved on the outer circumferential wall of the sliding column, the side wall of the locking block has an inclined structure, the inclined structure of the side wall of the locking block and the inclined structure of the bottom of the wedge plate can form a contact sliding state, and the hook head of the hook plate is arranged at the bottom of the locking block.

[0011] Preferably, the outer circumferential wall of the aeration pipe is connected to multiple jet pipes, the inner cavity of the jet pipes is in communication with the inner cavity of the aeration pipe, the multiple jet pipes are arranged in a ring array, and the output end of the jet pipes is oriented obliquely downward.

[0012] Preferably, the inner circumferential wall of the lifting cylinder is connected to a plurality of sliders, the side wall of the sliders is provided with a sliding groove, the top of the slider is connected to a push-pull rod, and the top of the push-pull rod is connected to a push-pull block.

[0013] Preferably, the outer circumferential wall of the upper support tube is provided with a plurality of elongated grooves, and the inner sidewall of the elongated grooves is provided with slide rails, and the slider slides in cooperation with the slide rails through the grooves.

[0014] Preferably, a lifting plate is slidably arranged on the inner sidewall of the elongated groove via the slide rail; the push-pull rod passes through the bottom of the lifting plate and extends into the inner cavity of the lifting plate; the push-pull block is movably arranged in the inner cavity of the lifting plate; an inclined plate is connected to the top of the lifting plate; an inclined groove is formed on the sidewall of the inclined plate; a slide is connected to the top of the aeration pipe; multiple opening and closing plates are slidably arranged on the slide; the multiple opening and closing plates are arranged in a circular array; a drive column is connected to the inner sidewall of the opening and closing plates; the drive column is movably arranged in the inclined groove; the multiple opening and closing plates have a separated state and a combined state; in the separated state, the top of the aeration pipe is in the open state; in the combined state, the top of the aeration pipe is in the closed state, and the aeration pipe can only output air through the multiple jet pipes.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. This invention designs multiple aeration hoods and multiple air collection hoods within the aeration disc. These hoods can be combined to form an umbrella-shaped or explosive-shaped hood. In the initial working state, the multiple aeration hoods and air collection hoods combine to form an umbrella-shaped hood. The air output from the aeration pipes moves rapidly upward and enters the inner cavity of the umbrella-shaped hood. Part of the air is directly discharged through multiple aeration holes at the top of the aeration hood, achieving continuous basic aeration and providing oxygen for microorganisms in the wastewater. The other part of the air is collected in the inner cavity of the umbrella-shaped hood, gradually accumulating to form a high-pressure air reserve. As air accumulates in the inner cavity of the umbrella-shaped hood, the increased air pressure generates buoyancy, pushing the air collection hood upward, thereby allowing air to pass through... The lifting cylinder slides upward along the outer wall of the upper support pipe via the fixed rod. When the air collection hood rises, the aeration hood rises synchronously via the rotating shaft. The aeration hood is pulled by the control rod, and its upward motion is converted into a rotational motion around the side wall of the air collection hood. Finally, multiple aeration hoods and the air collection hood combine to form an explosive hood. In the explosive hood state, the output port of the aeration hood is oriented obliquely upward, which rapidly aerates the high-pressure air accumulated in the inner cavity of the umbrella-shaped hood to the surroundings, forming pulsed strong aeration. This pulsed aeration can generate strong turbulence, which can moderately disperse the sludge flocs, expose more contact sites between microorganisms and pollutants, accelerate the degradation of organic matter, and enhance the efficiency of sewage disturbance and oxygen diffusion.

[0016] 2. This invention also designs the air collection hood as an arc-shaped structure, which can more efficiently collect the air output from the aeration pipe. When the aeration hood rotates, multiple aeration hoods and multiple air collection hoods combine to form an explosive hood. The air inside the air collection hood is quickly discharged upward. At this time, due to the diversion effect of the guide arc block, the arc-shaped surface of the guide arc block guides the vertically upward airflow to both sides, so that most of the air inside the air collection hood is discharged upward from both sides and enters the inner cavity of the aeration hood on both sides of the air collection hood. Then, it is quickly ejected through the output port two facing obliquely above the aeration hood. After multiple aeration hoods and multiple air collection hoods combine to form an explosive hood, most of the air collected by the umbrella-shaped hood can be guided into the inner cavity of the aeration hood to participate in the pulse-type aeration action that diffuses to all sides. This maximizes the utilization of the collected air, avoids a large amount of leakage or ineffective discharge of air during the conversion process, further enhances the overall aeration effect, and improves the efficiency and quality of sewage treatment.

[0017] 3. This invention, through the design of a latching and limiting structure between the hook plate and the locking block, ensures that the umbrella-shaped cover maintains a stable state during air collection, effectively preventing the lifting cylinder from accidentally rising due to external factors such as water flow disturbance, and ensuring that air can fully accumulate inside the umbrella-shaped cover. When the air accumulation inside the umbrella-shaped cover reaches the critical pressure, buoyancy automatically overcomes the spring resistance, causing the inclined surface of the locking block to slide relative to the wedge plate, achieving smooth unlocking. This ensures that the lifting cylinder rises smoothly and drives the umbrella-shaped cover to transform into an explosive cover, rapidly releasing the accumulated air in a pulsed manner. This design not only ensures the structural stability during the air collection stage and prevents the umbrella-shaped cover from accidentally unlocking due to water flow disturbance during the energy storage stage, ensuring sufficient air accumulation, but also realizes an automatic triggering mechanism based on air pressure changes, eliminating the need for additional control devices. At the same time, the precise control of the conversion timing through the mechanical structure ensures that the intensity and frequency of pulse aeration achieve the best treatment effect, thereby improving aeration efficiency and the reliability of the device operation.

[0018] 4. This invention designs multiple opening and closing plates. When multiple aeration hoods and multiple air collection hoods are combined to form an umbrella-shaped hood, the lifting cylinder is in a low position. The slider drives the push-pull rod to pull down, and the push-pull block moves down in the inner cavity of the lifting plate, causing the lifting plate and the top inclined plate to descend. The inclined groove of the inclined plate drives the opening and closing plates to slide and separate along the slide frame through the drive column. At this time, the top of the aeration pipe is in the open state, and air is output through the top of the aeration pipe and enters the inner cavity of the umbrella-shaped hood. When the air inside the umbrella-shaped hood accumulates to a certain level, it forces the umbrella-shaped hood to explode. When the cover is changed, the lifting cylinder rises, which drives the slider to push the push-pull rod upward. The push-pull block lifts the lifting plate and the inclined plate. The inclined groove pulls the opening and closing plate along the slide frame through the drive column and closes the top of the aeration pipe. At this time, air can only be output to the downward angle through the jet pipe. The downward airflow will exert a downward and lateral thrust on the sewage below the aeration disc, causing the sludge deposited at the bottom to be stirred and resuspended in the sewage. It can fully contact the activated sludge and oxygen and participate in the pollutant degradation process, thereby avoiding the deposition of sludge at the bottom.

[0019] 5. This invention also achieves stroke adaptation and precise linkage between the lifting cylinder and the opening / closing plate through the design of the lifting plate. When the lifting cylinder drives the slider to rise, the push-pull rod drives the push-pull block to slide from the bottom to the top in the inner cavity of the lifting plate until it reaches the top of the inner cavity before pushing the lifting plate to rise. This design solves the adaptation problem that the lifting cylinder has a large upward stroke while the lifting plate only needs a small upward stroke to complete the sliding task of the opening / closing plate. When the lifting cylinder descends from a high place and the explosive-shaped cover gradually transforms into an umbrella-shaped cover, the push-pull rod drives the push-pull block to slide from the top to the bottom in the inner cavity of the lifting plate until it reaches the bottom of the inner cavity before pulling the lifting plate to descend. During this process, multiple opening / closing plates remain in a combined state, avoiding the premature separation of the opening / closing plates when the explosive-shaped cover transforms into an umbrella-shaped cover, which would cause the top of the aeration pipe to open too early. This prevents the airflow output from the aeration pipe from impacting the cover, causing the lifting cylinder to descend slowly and the transformation process to be too long. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the aeration disc structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the aeration disc of the present invention; Figure 4 This is a schematic diagram of the disassembled aeration disc structure of the present invention; Figure 5 This is a schematic diagram of the connection structure between the upper support tube and the aeration hood of the present invention; Figure 6 This is a schematic diagram of the connection structure between the lifting cylinder and the gas collecting hood of the present invention; Figure 7 This is a schematic diagram of the top structure of the gas collection hood of the present invention; Figure 8for Figure 7 Enlarged schematic diagram of the structure at point A in the middle; Figure 9 This is a schematic diagram of the connection structure between the aeration hood and the gas collection hood of the present invention; Figure 10 for Figure 2 Enlarged schematic diagram of the structure at point B; Figure 11 This is a schematic diagram of the cross-sectional structure of the movable block of the present invention; Figure 12 This is a schematic diagram of the jet pipe structure of the present invention; Figure 13 This is a schematic diagram of the top structure of the aeration pipe of the present invention; Figure 14 This is a schematic diagram showing the combined state of the multiple opening and closing plates of the present invention; Figure 15 This is a schematic diagram of the lifting plate structure of the present invention; Figure 16 This is a schematic diagram of the airflow state inside the explosive-shaped enclosure of the present invention; Figure 17 This is a schematic diagram of one usage state of the present invention.

[0021] Explanation of the labels in the diagram: 1. Air pump; 2. Air delivery pipeline; 3. Aeration disc; 4. Aeration pipe; 5. Support assembly; 6. Lifting cylinder; 8. Jet nozzle; 501. Lower support pipe; 502. Upper support pipe; 503. Connecting column; 504. Control rod; 505. Aeration hood; 506. Aeration hole; 507. Base frame; 508. Output port two; 509. Rotating shaft two; 510. Long groove; 601. Fixing rod; 602. Gas collection hood; 603. Guide arc block; 604. Rotating shaft one; 605. Output port one; 701. Hook plate; 702. Hook head; 703. Wedge plate; 704. Guide rod; 705. Movable block; 706. Spring 1; 707. Locking block; 708. Sliding column; 709. Limiting plate; 710. Spring 2; 801. Slider; 802. Push-pull rod; 803. Push-pull block; 804. Lifting plate; 805. Inclined plate; 806. Inclined groove; 807. Carriage; 808. Opening and closing plate; 809. Drive column. Detailed Implementation

[0022] like Figures 1 to 17As shown, the present invention relates to a high-efficiency aeration device for sewage treatment, comprising an air pump 1, an air supply pipe 2 connected to the output end of the air pump 1, and a plurality of aeration discs 3 arranged at the output end of the air supply pipe 2. After the air pump 1 is started, it generates compressed air, which is transported to the plurality of aeration discs 3 through the air supply pipe 2 to provide an air source for the subsequent aeration process.

[0023] In an embodiment of the present invention, the aeration disc 3 includes an aeration pipe 4 connected to the output end of the air supply pipe 2 and a support assembly 5. The support assembly 5 includes a lower support pipe 501 and an upper support pipe 502. The top of the lower support pipe 501 and the bottom of the upper support pipe 502 are connected by multiple connecting posts 503. Multiple control rods 504 are movably arranged on the top of the upper support pipe 502. An aeration hood 505 is movably connected to the top of the control rods 504. There are multiple aeration hoods 505, and multiple aeration holes 506 are opened on the top of the aeration hoods 505. The aeration holes 506 have a circular hole structure and a small hole diameter, so that the amount of air discharged by the aeration holes 506 per unit time is less than the supply air of the aeration pipe 4. Air intake; A lifting cylinder 6 is slidably arranged on the outer circumference of the upper support pipe 502. The top of the lifting cylinder 6 is connected to a gas collection hood 602 by multiple fixed rods 601. There are multiple gas collection hoods 602; Aeration hoods 505 are rotatably arranged between every two gas collection hoods 602. Multiple aeration hoods 505 and multiple gas collection hoods 602 can be combined to form an umbrella-shaped hood or an explosive hood. The output end of the aeration pipe 4 is arranged below the umbrella-shaped hood. Part of the air output by the aeration pipe 4 can be discharged by the umbrella-shaped hood through multiple aeration holes 506, and the other part can be collected in the inner cavity of the umbrella-shaped hood; The explosive hood can quickly aerate the air collected in the inner cavity of the umbrella-shaped hood to the surroundings.

[0024] As another embodiment of the present invention, the support assembly 5 also includes a base frame 507, which is fixed to the bottom of the aeration tank by bolts. The base frame 507 is connected to the outer circumferential wall of the lower support pipe 501, and the aeration pipe 4 passes through the inner cavity of the lower support pipe 501 and extends to the top of the upper support pipe 502.

[0025] In another embodiment of the present invention, the gas collecting hood 602 has an arc-shaped structure. The bottom of the gas collecting hood 602 is connected to a guide arc block 603 and multiple rotating shafts 604. The bottom of the guide arc block 603 is connected to the top of the lifting cylinder 6 through one of the fixing rods 601. The axes of the rotating shafts 604 of every two gas collecting hoods 602 are aligned. The aeration hood 505 is rotatably engaged with the side wall of the gas collecting hood 602 through the rotating shafts 604. By designing the axes of the rotating shafts 604 of every two gas collecting hoods 602 to be aligned, the coaxiality of the aeration hood 505 when rotating is ensured, structural jamming or misalignment is avoided, and the smoothness of the conversion between the two hood modes is guaranteed.

[0026] In another embodiment of the present invention, an outlet 605 is arranged at the bottom of the air collecting hood 602. When air is continuously stored in the inner cavity of the air collecting hood 602, the water in the inner cavity of the air collecting hood 602 is compressed by the air and can be discharged from the outlet 605. An outlet 508 is arranged at the bottom of the aeration hood 505. When the tops of the multiple aeration hoods 505 and the multiple air collecting hoods 602 are kept on the same horizontal plane, the multiple aeration hoods 505 and the multiple air collecting hoods 602 are combined to form an umbrella-shaped hood. When the aeration hood 505 rotates around the side wall of the air collecting hood 602 through the pivot 604, the multiple aeration hoods 505 and the multiple air collecting hoods 602 are combined to form an explosive hood. At this time, the output direction of the outlet 508 of the aeration hood 505 is obliquely upward. The top of the aeration hood 505 is a pointed structure, and the bottom of the pointed structure is connected to a second rotating shaft 509. The aeration hood 505 is rotatably connected to the top of the control rod 504 through the second rotating shaft 509. When the buoyancy generated by the air collected in the inner cavity of the air collecting hood 602 pushes the air collecting hood 602 to rise, the air collecting hood 602 can drive the aeration hood 505 to rise through the first rotating shaft 604. The aeration hood 505 can be pulled by the control rod 504, so that the upward motion of the aeration hood 505 is converted into a rotational motion around the side wall of the air collecting hood 602.

[0027] This invention designs multiple aeration hoods 505 and multiple air collection hoods 602 within the aeration disc 3. These hoods can be combined to form an umbrella-shaped or explosive-shaped hood. In the initial working state, the multiple aeration hoods 505 and air collection hoods 602 combine to form an umbrella-shaped hood. Air output from the aeration pipe 4 moves rapidly upward and enters the inner cavity of the umbrella-shaped hood. Part of the air is directly discharged through multiple aeration holes 506 at the top of the aeration hood 505, achieving continuous basic aeration and providing oxygen to microorganisms in the wastewater. The remaining air is collected within the inner cavity of the umbrella-shaped hood, gradually accumulating to form a high-pressure air reserve. As air accumulates within the inner cavity of the umbrella-shaped hood, the increased air pressure generates buoyancy, pushing the air collection hood 602 upward, which is then lifted by the fixing rod 6. 01 drives the lifting cylinder 6 to slide upward along the outer wall of the upper support pipe 502. When the air collection hood 602 rises, the aeration hood 505 rises synchronously through the rotating shaft 604. The aeration hood 505 is pulled by the control rod 504, and its upward motion is transformed into a rotational motion around the side wall of the air collection hood 602. Finally, multiple aeration hoods 505 and the air collection hood 602 are combined to form an explosive hood. In the explosive hood state, the output port 508 of the aeration hood 505 is oriented obliquely upward, which rapidly aerates the high-pressure air accumulated in the inner cavity of the umbrella-shaped hood to the surroundings, forming pulsed strong aeration. This pulsed aeration can generate strong turbulence, which can moderately disperse the sludge flocs, expose more contact sites between microorganisms and pollutants, accelerate the degradation of organic matter, and enhance the efficiency of sewage disturbance and oxygen diffusion. After pulse aeration, the air pressure inside the hood decreases, and the lifting cylinder 6 descends under the action of gravity, causing the air collection hood 602 and the aeration hood 505 to reset into an umbrella-shaped hood, and re-enter the air collection and regular aeration cycle, achieving a highly efficient and intermittently enhanced aeration effect.

[0028] like Figure 16 As shown, this invention also designs the air collecting hood 602 as an arc-shaped structure, which can more efficiently collect the air output from the aeration pipe 4. When the aeration hood 505 rotates, and multiple aeration hoods 505 and multiple air collecting hoods 602 combine to form an explosive hood, the air inside the air collecting hood 602 is quickly discharged upward. At this time, due to the diversion effect of the guide arc block 603, the arc-shaped surface of the guide arc block 603 guides the vertically upward airflow to both sides, so that most of the air inside the air collecting hood 602 is discharged upward from both sides and enters the air collecting hood 602 respectively. The air is rapidly ejected from the inner cavity of the aeration hoods 505 on both sides through the outlet 508 facing upwards at the aeration hoods 505. This allows multiple aeration hoods 505 and multiple air collection hoods 602 to combine and form an explosive hood body. This allows most of the air collected by the umbrella-shaped hood body to be guided into the inner cavity of the aeration hood 505 to participate in the pulse-type aeration action that spreads to all directions. This maximizes the utilization of the collected air, avoids a large amount of leakage or ineffective discharge of air during the conversion process, further enhances the overall aeration effect, and improves the efficiency and quality of sewage treatment.

[0029] In an embodiment of the present invention, a hook plate 701 is connected to the outer circumferential wall of the lifting cylinder 6, and a hook head 702 is integrally formed at the bottom of the hook plate 701; a plurality of wedge plates 703 are connected to the bottom of the upper support pipe 502, and the hook plate 701 is movably arranged between two wedge plates 703, the bottom of the wedge plates 703 having a sloping structure; a plurality of guide rods 704 are also arranged between the lower support pipe 501 and the upper support pipe 502, and a movable block 705 is slidably arranged on the guide rod 704, the top of the movable block 705 being flush with the bottom of the upper support pipe 502. The parts are connected by a spring 706. A locking block 707 is slidably arranged in the inner cavity of the movable block 705. A sliding column 708 is connected to the side wall of the locking block 707. The sliding column 708 movably passes through the side wall of the movable block 705 and is connected to a limit plate 709. A spring 710 is sleeved on the outer circumference of the sliding column 708. The side wall of the locking block 707 has a slope structure. The slope structure of the side wall of the locking block 707 can form a contact sliding state with the slope structure at the bottom of the wedge plate 703. The hook head 702 of the hook plate 701 is arranged at the bottom of the locking block 707. When multiple aeration hoods 505 and air collection hoods 602 are combined to form an umbrella-shaped hood, the lifting cylinder 6 is in a low position. The hook plate 701 on its outer circumference is located between two wedge plates 703. The hook head 702 at the bottom of the hook plate contacts the bottom of the locking block 707 in the inner cavity of the movable block 705. At this time, the first spring 706 is in a naturally extended state, and the movable block 705 remains relatively stable on the guide rod 704. The second spring 710 is also in a natural state. The inclined structure of the locking block 707 does not compress the inclined structure at the bottom of the wedge plate 703. The locking block 707, through its own weight and the support of the second spring 710, forms a locking limit on the hook head 702, preventing the lifting cylinder 6 from rising unexpectedly due to water flow disturbance, and ensuring the structural stability of the umbrella-shaped hood when collecting air. As air accumulates inside the umbrella-shaped shroud, buoyancy gradually increases. When the buoyancy exceeds the elastic force of spring 706, it pushes the air-collecting shroud 602 upward, causing the lifting cylinder 6 to slide upward along the outer wall of the upper support tube 502. The hook plate 701 rises synchronously with the lifting cylinder 6. The hook head 702 presses upward against the bottom of the locking block 707. The inclined surface of the side wall of the locking block 707 contacts the inclined surface of the bottom of the wedge plate 703 and produces relative sliding, forcing the locking block 707 to slide along the inner cavity of the movable block 705. Spring 710 is compressed. When the hook head 702 completely disengages from the limiting range of the locking block 707, the latch lock is released, and the lifting cylinder 6 can continue to rise, pushing the shroud to transform into an explosive shroud, completing the pulse-like explosion of air.

[0030] This invention, through the design of the latching and limiting structure of the hook plate 701 and the locking block 707, ensures that the umbrella-shaped cover can stably maintain its state during air collection, effectively preventing the lifting cylinder 6 from accidentally rising due to external factors such as water flow disturbance, and ensuring that air can be fully accumulated in the inner cavity of the umbrella-shaped cover. When the air accumulation in the umbrella-shaped cover reaches the critical pressure, buoyancy can automatically overcome the spring resistance, causing the inclined surface of the locking block 707 to slide relative to the wedge plate 703, achieving smooth unlocking, ensuring that the lifting cylinder 6 rises smoothly and drives the umbrella-shaped cover to transform into an explosive cover, rapidly amplifying the accumulated air in a pulsed manner. This design not only ensures the structural stability during the air collection stage and prevents the umbrella-shaped cover from accidentally unlocking due to water flow disturbance during the energy storage stage, ensuring sufficient air accumulation, but also realizes an automatic triggering mechanism based on air pressure changes, eliminating the need for additional control devices. At the same time, the precise control of the conversion timing through the mechanical structure ensures that the intensity and frequency of pulse aeration achieve the best treatment effect, thereby improving aeration efficiency and the reliability of device operation.

[0031] In an embodiment of the present invention, a plurality of jet pipes 8 are connected to the outer circumference of the aeration pipe 4. The inner cavity of the jet pipe 8 is in communication with the inner cavity of the aeration pipe 4. The plurality of jet pipes 8 are arranged in a ring array, and the output end of the jet pipe 8 is oriented obliquely downward. When air is output through the jet pipe 8, the obliquely downward airflow will generate a downward and circumferential thrust on the sewage below the aeration disc 3, forming local turbulence. This causes the sludge deposited at the bottom to be stirred and resuspended in the sewage, making full contact with the activated sludge and oxygen, and participating in the pollutant degradation process, thereby preventing the sedimentation of sludge at the bottom.

[0032] In an embodiment of the present invention, a plurality of sliders 801 are connected to the inner circumference of the lifting cylinder 6. Sliding grooves are formed on the sidewalls of the sliders 801. A push-pull rod 802 is connected to the top of the slider 801, and a push-pull block 803 is connected to the top of the push-pull rod 802. A plurality of elongated grooves 510 are formed on the outer circumference of the upper support tube 502. Slide rails are arranged on the inner sidewalls of the elongated grooves 510, and the sliders 801 slide in cooperation with the slide rails through the grooves. A lifting plate 804 is slidably arranged on the inner wall of the elongated groove 510 via a slide rail. A push-pull rod 802 passes through the bottom of the lifting plate 804 and extends into the inner cavity of the lifting plate 804. A push-pull block 803 is movably arranged in the inner cavity of the lifting plate 804. An inclined plate 805 is connected to the top of the lifting plate 804, and an inclined groove 806 is formed on the side wall of the inclined plate 805. When the lifting cylinder 6 slides along the outer wall of the upper support tube 502, the slider 801 on its inner circumference cooperates with the slide rail in the elongated groove 510 of the upper support tube 502 through the slide groove to achieve stable guidance. The slider 801 synchronously drives the push-pull rod 802 and the push-pull block 803 at the top to rise and fall, while the push-pull block 803 is movably embedded in the inner cavity of the lifting plate 804, thereby driving the lifting plate 804 to slide synchronously along the slide rail in the elongated groove 510.

[0033] The top of the aeration pipe 4 is connected to a slide 807, on which multiple opening and closing plates 808 are slidably arranged. The multiple opening and closing plates 808 are arranged in a ring array. The inner sidewall of the opening and closing plates 808 is connected to a drive column 809, which is movably arranged in the inclined groove 806. The multiple opening and closing plates 808 have a separated state and a combined state. In the separated state, the top of the aeration pipe 4 is in the open state. In the combined state, the top of the aeration pipe 4 is in the closed state, and the aeration pipe 4 can only output air through multiple jet pipes 8.

[0034] This invention designs multiple opening and closing plates 808. When multiple aeration hoods 505 and multiple air collecting hoods 602 are combined to form an umbrella-shaped hood, the lifting cylinder 6 is in a low position. The slider 801 drives the push-pull rod 802 to pull down, and the push-pull block 803 moves down in the inner cavity of the lifting plate 804, causing the lifting plate 804 and the top inclined plate 805 to descend. The inclined groove 806 of the inclined plate 805 drives the opening and closing plates 808 to slide and separate along the slide frame 807 through the drive column 809. At this time, the top of the aeration pipe 4 is in an open state, and air is output through the top of the aeration pipe 4 and enters the inner cavity of the umbrella-shaped hood. When the air in the umbrella-shaped hood accumulates to a certain extent, it forces the umbrella-shaped hood to open. When the enclosure transforms into an explosive enclosure, the lifting cylinder 6 rises, driving the slider 801 to push the push-pull rod 802 upward. The push-pull block 803 lifts the lifting plate 804 and the inclined plate 805. The inclined groove 806 pulls the opening and closing plate 808 along the slide frame 807 through the drive column 809 and closes the top of the aeration pipe 4. At this time, air can only be output to the downward slope through the jet pipe 8. The downward airflow will exert a downward and lateral thrust on the sewage below the aeration disc 3, causing the sludge deposited at the bottom to be stirred and resuspended in the sewage, making full contact with the activated sludge and oxygen, and participating in the pollutant degradation process, thereby avoiding the deposition of sludge at the bottom.

[0035] This invention also achieves stroke adaptation and precise linkage between the lifting cylinder 6 and the opening / closing plate 808 through the design of the lifting plate 804. When the lifting cylinder 6 drives the slider 801 to rise, the push-pull rod 802 drives the push-pull block 803 to slide from the bottom to the top in the inner cavity of the lifting plate 804 until it reaches the top of the inner cavity before pushing the lifting plate 804 to rise. This design solves the adaptation problem that the lifting cylinder 6 has a large upward stroke while the lifting plate 804 only needs a small upward stroke to complete the sliding task of the opening / closing plate 808; when the lifting cylinder 6 rises from a high position... As the explosive-shaped hood gradually transforms into an umbrella-shaped hood, the push-pull rod 802 drives the push-pull block 803 to slide from the top to the bottom within the inner cavity of the lifting plate 804 until it reaches the bottom of the inner cavity before pulling the lifting plate 804 down. During this process, the multiple opening and closing plates 808 remain in a closed state, which avoids the opening and closing plates 808 separating prematurely when the explosive-shaped hood transforms into an umbrella-shaped hood, causing the top of the aeration pipe 4 to open too early. This also prevents the airflow output from the aeration pipe 4 from impacting the hood, causing the lifting cylinder 6 to descend slowly and the transformation process to be too long.

[0036] By adapting the stroke of the lifting plate 804 and the push-pull block 803, the large stroke of the lifting cylinder 6 is avoided from causing excessive drive to the opening and closing plate 808 during switching, and the precise synchronization of the two hood modes and the opening and closing state of the top of the aeration pipe 4 is ensured, further improving the rationality of the structural linkage and the accuracy of aeration control.

[0037] Working principle: This embodiment provides a high-efficiency aeration device for sewage treatment. When in use, the air pump 1 is started, and the compressed air generated by the air pump 1 is delivered to the aeration pipe 4 of each aeration disc 3 through the air delivery pipe 2. In the initial state, multiple aeration hoods 505 and multiple air collection hoods 602 are combined to form an umbrella-shaped hood. The lifting cylinder 6 is in a low position. At this time, the hook head 702 of the hook plate 701 is locked and limited by the locking block 707 to ensure the stability of the umbrella-shaped hood. At the same time, the lifting cylinder 6 drives the slider 801 to a low position, and the push-pull rod 802 pulls down to make the lifting plate 804 and the inclined plate 805 descend. The inclined groove 806 drives the opening and closing plate 808 to separate through the drive column 809. The top of the aeration pipe 4 opens, and air is output to the inner cavity of the umbrella-shaped hood through the top. Part of the air is discharged through the aeration holes 506 of the aeration hood 505 for basic aeration, and the other part accumulates in the hood. As air accumulates, the air pressure inside the umbrella-shaped hood increases, generating buoyancy. When the buoyancy overcomes the resistance of the spring 706, the hook 702 drives the locking block 707 to rise, causing the locking block 707 to slide relative to the wedge plate 703 and unlock. The lifting cylinder 6 rises along the upper support pipe 502. The rise of the air collecting hood 602 drives the aeration hood 505 to rise through the rotating shaft 604. The aeration hood 505 is pulled by the control rod 504 to rotate around the rotating shaft 604, so that multiple aeration hoods 505 and the air collecting hood 602 form an explosive hood. During this process, the lifting cylinder 6 rises, causing the slider 801 to move upward. The push-pull rod 802 pushes the lifting plate 804 and the inclined plate 805 to rise. The inclined trough 806 pulls the opening and closing plate 808 together through the drive column 809, closing the top of the aeration pipe 4. Air is only output to the downward slope through the jet pipe 8, stirring the bottom sludge. At the same time, the explosive hood rapidly amplifies the accumulated high-pressure air to the surroundings through the output port 508 of the aeration hood 505, forming a pulse-type strong aeration. After pulse aeration, the air pressure inside the hood decreases, and the lifting cylinder 6 descends under the action of gravity. The hook plate 701 moves down accordingly, and the locking block 707 resets under the action of the second spring 710, re-limiting the hook head 702. The descent of the lifting cylinder 6 drives the air collection hood 602 and the aeration hood 505 to reset into an umbrella-shaped hood. The opening and closing plate 808 also separates, the top of the aeration pipe 4 opens, and the device re-enters the air collection and basic aeration cycle. This process is repeated to achieve high-efficiency sewage treatment aeration.

[0038] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A high-efficiency aeration device for wastewater treatment, characterized in that, Includes an air pump (1), the output end of which is connected to an air supply pipe (2), and the output end of the air supply pipe (2) is provided with multiple aeration discs (3); The aeration disc (3) includes an aeration pipe (4) connected to the output end of the air supply pipe (2) and a support assembly (5). The support assembly (5) includes a lower support pipe (501) and an upper support pipe (502). The top of the lower support pipe (501) and the bottom of the upper support pipe (502) are connected by multiple connecting columns (503). Multiple control rods (504) are movably arranged on the top of the upper support pipe (502). An aeration hood (505) is movably connected to the top of the control rods (504). There are multiple aeration hoods (505), and multiple aeration holes (506) are opened on the top of the aeration hoods (505). A lifting cylinder (6) is slidably arranged on the outer circumference of the upper support tube (502). The top of the lifting cylinder (6) is connected to a gas collection hood (602) by multiple fixing rods (601). There are multiple gas collection hoods (602). The aeration hood (505) is rotatably arranged between every two air collection hoods (602). Multiple aeration hoods (505) and multiple air collection hoods (602) can be combined to form an umbrella-shaped hood or an explosive hood. The output end of the aeration pipe (4) is arranged below the umbrella-shaped hood. Part of the air output by the aeration pipe (4) can be discharged by the umbrella-shaped hood through multiple aeration holes (506), and another part can be collected by the inner cavity of the umbrella-shaped hood. The explosive hood can quickly aerate the air collected in the inner cavity of the umbrella-shaped hood to the surroundings.

2. The high-efficiency aeration device for sewage treatment according to claim 1, characterized in that, The support assembly (5) also includes a base frame (507), which is connected to the outer circumferential wall of the lower support pipe (501), and the aeration pipe (4) passes through the inner cavity of the lower support pipe (501) and extends to the top of the upper support pipe (502).

3. The high-efficiency aeration device for sewage treatment according to claim 1, characterized in that, The gas collection hood (602) has an arc-shaped structure. The bottom of the gas collection hood (602) is connected to a guide arc block (603) and multiple rotating shafts (604). The bottom of the guide arc block (603) is connected to the top of the lifting cylinder (6) through one of the fixed rods (601). The axes of the rotating shafts (604) of every two gas collection hoods (602) are aligned. The aeration hood (505) is rotatably engaged with the side wall of the gas collection hood (602) through the rotating shafts (604).

4. A high-efficiency aeration device for wastewater treatment according to claim 3, characterized in that, The bottom of the gas collecting hood (602) is provided with an outlet port one (605), and the bottom of the aeration hood (505) is provided with an outlet port two (508). When the tops of the multiple aeration hoods (505) and the multiple gas collecting hoods (602) are kept on the same horizontal plane, the multiple aeration hoods (505) and the multiple gas collecting hoods (602) are combined to form the umbrella-shaped hood. When the aeration hood (505) rotates around the side wall of the gas collecting hood (602) through the rotating shaft one (604), the multiple aeration hoods (505) and the multiple gas collecting hoods (602) are combined to form the explosive hood. At this time, the output direction of the outlet port two (508) of the aeration hood (505) is obliquely upward.

5. A high-efficiency aeration device for wastewater treatment according to claim 3, characterized in that, The top of the aeration hood (505) is a pointed structure, and the bottom of the pointed structure is connected to a second rotating shaft (509). The aeration hood (505) is rotatably connected to the top of the control rod (504) through the second rotating shaft (509). When the buoyancy generated by the air collected in the inner cavity of the air collecting hood (602) pushes the air collecting hood (602) to rise, the air collecting hood (602) can drive the aeration hood (505) to rise through the first rotating shaft (604). The aeration hood (505) can be pulled by the control rod (504), so that the upward movement of the aeration hood (505) is converted into a rotational movement around the side wall of the air collecting hood (602).

6. A high-efficiency aeration device for wastewater treatment according to claim 1, characterized in that, The outer circumferential wall of the lifting cylinder (6) is connected to a hook plate (701), and the bottom of the hook plate (701) is integrally formed with a hook head (702). The bottom of the upper support tube (502) is connected to a plurality of wedge plates (703), and the hook plate (701) is movably arranged between two of the wedge plates (703). The bottom of the wedge plate (703) is a sloping structure. Multiple guide rods (704) are arranged between the lower support tube (501) and the upper support tube (502). Movable blocks (705) are slidably arranged on the guide rods (704). The top of the movable block (705) is connected to the bottom of the upper support tube (502) by a spring (706). A locking block (707) is slidably arranged inside the movable block (705), and a sliding column (708) is connected to the side wall of the locking block (707). The sliding column (708) moves through the side wall of the movable block (705) and is connected to the limiting plate (709). The outer circumference of the sliding column (708) is fitted with a spring (710). The side wall of the locking block (707) is a sloping structure. The sloping structure of the side wall of the locking block (707) and the sloping structure at the bottom of the wedge plate (703) can form a contact sliding state. The hook head (702) of the hook plate (701) is arranged at the bottom of the locking block (707).

7. A high-efficiency aeration device for wastewater treatment according to claim 1, characterized in that, The outer circumference of the aeration pipe (4) is connected to multiple jet pipes (8). The inner cavity of the jet pipe (8) is connected to the inner cavity of the aeration pipe (4). The multiple jet pipes (8) are arranged in a ring array. The output end of the jet pipe (8) is oriented diagonally downward.

8. A high-efficiency aeration device for wastewater treatment according to claim 7, characterized in that, The inner circumference of the lifting cylinder (6) is connected to multiple sliders (801). The side wall of the slider (801) is provided with a sliding groove. The top of the slider (801) is connected to a push-pull rod (802), and the top of the push-pull rod (802) is connected to a push-pull block (803).

9. A high-efficiency aeration device for wastewater treatment according to claim 8, characterized in that, The upper support tube (502) has multiple elongated grooves (510) on its outer circumference. The inner sidewall of the elongated grooves (510) is provided with a slide rail. The slider (801) slides in cooperation with the slide rail through the groove.

10. A high-efficiency aeration device for wastewater treatment according to claim 9, characterized in that, A lifting plate (804) is slidably arranged on the inner side wall of the elongated groove (510) via the slide rail. The push-pull rod (802) passes through the bottom of the lifting plate (804) and extends to the inner cavity of the lifting plate (804). The push-pull block (803) is movably arranged in the inner cavity of the lifting plate (804). An inclined plate (805) is connected to the top of the lifting plate (804). An inclined groove (806) is opened on the side wall of the inclined plate (805). The aeration pipe (4) is connected to a slide (807) at the top. Multiple opening and closing plates (808) are slidably arranged on the slide (807). The multiple opening and closing plates (808) are arranged in a ring array. A drive column (809) is connected to the inner side wall of the opening and closing plate (808). The drive column (809) is movably arranged in the inclined groove (806). The multiple opening and closing plates (808) have a separated state and a combined state. In the separated state, the top of the aeration pipe (4) is open; in the combined state, the top of the aeration pipe (4) is closed, and the aeration pipe (4) can only output air through multiple jet pipes (8).

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