An aeration device

Abstract

This invention relates to the field of agricultural wastewater treatment technology, specifically to an aeration device, comprising a vertical pipe, the lower end of which is connected to the upper end of the first vertical section of a U-shaped pipe, the upper end of the second vertical section of the U-shaped pipe being connected to a straight cylinder, a plurality of hollow spheres being provided inside the U-shaped pipe, a driving component being installed inside the straight cylinder for allowing the hollow spheres inside the second vertical section of the U-shaped pipe to enter the second vertical section of the U-shaped pipe, a heightening cylinder being installed at the upper end of the vertical pipe, an air-injecting component being installed on the outer surface of the first vertical section of the U-shaped pipe, a plurality of first one-way valves being equidistantly installed on the surface of the second vertical section of the U-shaped pipe, and a partition for cutting off the internal space of the vertical pipe being installed on the outer surface of the vertical pipe. This invention has the following beneficial effects: utilizing the gravitational potential energy of wastewater to allow air to enter the deeper bottom layer of the wastewater.

Description

Technical Field

[0001] This invention is an aeration device, belonging to the field of agricultural wastewater treatment technology. Background Technology

[0002] Aeration is the process of forcibly transferring oxygen from the air into a liquid to obtain sufficient dissolved oxygen. In addition, aeration prevents suspended matter from settling and enhances the contact between organic matter, microorganisms, and dissolved oxygen. This ensures that microorganisms in the wastewater can oxidize and decompose organic matter under conditions of sufficient dissolved oxygen. Increasing the contact area between water and air through methods such as aeration or mechanical agitation in agricultural effluent is an intermediate process in biological wastewater treatment. For deep wastewater, after placing aeration heads at the bottom of the wastewater, the air supply equipment that aerates the water needs to overcome the water pressure. This puts the air supply equipment, such as air pumps, under a long-term high load, which affects the service life of the air pumps. If multiple air pumps or high-power air pumps are used, the power consumption will be high. Another method of aeration is mechanical stirring. The motor is placed above the wastewater surface, and a long drive shaft needs to be installed at the motor output end to keep the impeller that disperses the air at the bottom of the wastewater. On the one hand, the increased length of the drive shaft will affect the stability of the structure. On the other hand, the resistance that the motor has to overcome to drive the impeller at the bottom of the deep wastewater also increases. That is, the motor is also under a high load, which will also affect the life of the motor. Summary of the Invention

[0003] The present invention aims to at least solve one of the technical problems existing in the prior art. Therefore, the object of the present invention is to provide an aeration device that utilizes the gravitational potential energy of wastewater to allow air to penetrate into the deeper layers of the wastewater.

[0004] The objective of this invention is achieved through the following technical solution:

[0005] The first aspect of this invention provides an aeration device, including a vertical pipe, the lower end of which is connected to the upper end of a first vertical section of a U-shaped pipe, the upper end of the first vertical section of the U-shaped pipe being flush with the upper end of a second vertical section of the U-shaped pipe, the upper end of the second vertical section of the U-shaped pipe being connected to a straight cylinder, one end of the straight cylinder being connected to the connection point between the first vertical section of the U-shaped pipe and the vertical pipe, a plurality of hollow spheres being provided inside the U-shaped pipe, the diameter of the hollow spheres being the same as the inner diameter of the U-shaped pipe, and a discharge pipe being installed at the bottom of the horizontal section of the U-shaped pipe, the lower end of which is installed for agricultural applications. A second one-way valve is installed at the bottom of the effluent treatment container. The second one-way valve is open in a direction away from the discharge pipe. A drive unit is installed inside the straight cylinder to allow the hollow ball in the second vertical section of the U-shaped pipe to enter the second vertical section of the U-shaped pipe. An elevating cylinder is installed at the upper end of the vertical pipe. An air-filling component is installed on the outer surface of the first vertical section of the U-shaped pipe. Multiple first one-way valves are installed at equal intervals on the surface of the second vertical section of the U-shaped pipe. The first one-way valves are open in a direction away from the second vertical section of the U-shaped pipe. A partition is installed on the outer surface of the vertical pipe to cut off the internal space of the vertical pipe.

[0006] In a first aspect of the invention, as an optional embodiment, the driving member includes a column head. A column head for pushing a hollow sphere is slidably mounted inside the straight cylinder. The outer diameter of the column head is the same as the inner diameter of the straight cylinder. A detachable end cap is mounted on the end of the straight cylinder away from the vertical tube. A driving cylinder is mounted at the center of the lower surface of the end cap. The movable end of the driving cylinder extends into the straight cylinder and is connected and fixed to the column head. A vertical arc-shaped opening is formed on the upper part of the outer surface of the end of the straight cylinder near the vertical tube. A vertical gate chamber is provided on the upper side of the vertical arc-shaped opening. The end of the vertical gate chamber facing the straight cylinder is open and connected and fixed to the straight cylinder. A vertical cylinder is mounted on the upper surface of the vertical gate chamber. The movable end of the vertical cylinder extends into the vertical gate chamber and is fitted with a vertical gate for separating the internal space of the straight cylinder. The vertical gate is slidably mounted inside the vertical gate chamber.

[0007] In a first aspect of the invention, as an optional embodiment, the gas filling device includes a gas cylinder. A third one-way valve is installed on the outer surface of the first vertical portion of the U-shaped tube. The other end of the third one-way valve is connected to and communicates with the gas cylinder. The third one-way valve is open in a direction away from the gas cylinder. A detachable round cover is installed on the end of the gas cylinder away from the third one-way valve. An inflation cylinder is installed on the side of the round cover opposite to the gas cylinder. The movable end of the inflation cylinder extends through the round cover into the gas cylinder. A first piston is connected and fixed to the movable end of the inflation cylinder. The first piston is slidably installed in the gas cylinder. An air inlet pipe is installed on the upper part of the outer surface of the gas cylinder near the third one-way valve. The upper end of the air inlet pipe extends above the surface of the agricultural wastewater and is equipped with a fourth one-way valve. The fourth one-way valve is open in a direction close to the air inlet pipe.

[0008] In a first aspect of the invention, as an optional embodiment, the separator includes a horizontal gate chamber, a horizontal arc-shaped opening is provided on the outer surface of the vertical pipe, the horizontal gate chamber is provided outside the horizontal arc-shaped opening, the end of the horizontal gate chamber facing the vertical pipe is open and fixedly connected to the vertical pipe, a horizontal gate is slidably installed in the horizontal gate chamber, the horizontal gate is fixedly connected to the movable end of a horizontal cylinder, and the cylinder body end of the horizontal cylinder is installed on the side of the horizontal gate chamber away from the vertical pipe.

[0009] In a first aspect of the invention, as an optional embodiment, a pipe joint is provided on the side of the lower end of the vertical pipe facing away from the straight cylinder. The inner diameter of the pipe joint is the same as the inner diameter of the straight cylinder. A plug is inserted into the pipe joint. A connecting plate is fixedly connected to the side of the plug facing away from the pipe joint. The connecting plate is fixedly connected to the pipe joint by multiple bolts. The column head is a hollow structure. The side of the column head facing away from the plug is open and a cover plate is installed. A rigid pipe is installed through the cover plate on the side facing away from the plug. A guide hole is opened on the side of the end cap facing away from the straight cylinder. The rigid pipe passes through the guide hole. The end of the rigid pipe away from the cover plate is connected to a flexible hose. The other end of the flexible hose is adjacent to and connected to a branch pipe head. The branch pipe head is installed at the bottom of the suction cylinder. The upper end of the suction cylinder is open and a top cover is installed. A suction cylinder is installed on the upper surface of the top cover. The suction cylinder is movable. The end extends into the suction cylinder and is fitted with a second rubber plug. The second rubber plug is slidably installed inside the suction cylinder. A first rubber plug is slidably installed inside the column head. A spring is installed at the lower part of the side of the first rubber plug facing away from the cover plate. The other end of the spring is installed inside a limiting sleeve. The side of the limiting sleeve facing away from the spring is closed. A lifting rod for limiting the position of the hollow ball is installed at the middle part of the side of the limiting sleeve facing away from the spring. A small lower hole that mates with the lifting rod is opened at the lower part of the side of the column head facing away from the end cover. The lifting rod is inserted into the small lower hole. A top rod for squeezing the hollow ball is installed at the middle part of the side of the first rubber plug facing away from the end cover. A small middle hole is opened at the middle part of the side of the column head facing away from the end cover. The end of the top rod away from the first rubber plug is inserted into the small middle hole. The length of the structure formed by the lifting rod and the spring is greater than the length of the top rod.

[0010] In a first aspect of the invention, as an optional embodiment, the end of the spring away from the limiting sleeve extends into the support sleeve, and the support sleeve is connected and fixed to the first rubber plug.

[0011] In a first aspect of the invention, as an optional embodiment, the suction cylinder is installed inside a switch box. The top of the switch box is open and has a removable cover. A through-hole is provided on one side of the switch box, through which the flexible hose passes. A support arm is fixedly connected to one side of the switch box. The end of the support arm away from the switch box is fixedly connected to a vertical pipe. A diagonal rod is fixedly connected to the upper part of the outer surface of the support arm. The end of the diagonal rod away from the support arm is fixedly connected to the vertical pipe.

[0012] The present invention has the following beneficial effects:

[0013] 1. This invention arranges multiple hollow spheres within a channel formed by a straight cylinder and a U-shaped tube. The diameter of the hollow spheres is the same as the inner diameter of the U-shaped tube. A discharge pipe with a second one-way valve is installed at the bottom of the horizontal section of the U-shaped tube, and multiple first one-way valves are installed on the surface of the second vertical section of the U-shaped tube. The first one-way valves are used to discharge residual moisture and air between two adjacent hollow spheres. Simultaneously, the vertical cylinder is extended while the drive cylinder contracts. The vertical cylinder drives a vertical gate to move into the straight cylinder, thus separating the internal space of the straight cylinder and preventing sewage from entering the vertical pipe. Once inside the straight cylinder, the column head moves between the second vertical section of the U-shaped tube and the end cap. The uppermost hollow ball inside the second vertical section of the U-shaped tube enters the straight cylinder under the mutual compression of the hollow balls. The control cylinder extends and the vertical cylinder retracts, so that the vertical gate no longer separates the internal space of the straight cylinder. Thus, the column head pushes the hollow ball between the vertical tube and the U-shaped tube. The above operation is repeated, so that the hollow balls in the second vertical section of the U-shaped tube can be pushed into the space formed by the vertical tube and the first vertical section of the U-shaped tube in sequence.

[0014] 2. Before pumping sewage into the heightened cylinder, the present invention controls the extension of the horizontal cylinder. The extension of the horizontal cylinder drives the horizontal gate to move into the vertical pipe, thereby achieving the function of separating the internal space of the vertical pipe, so that the sewage in the heightened cylinder does not exert pressure on the hollow ball at the connection between the first vertical part of the vertical pipe and the U-shaped pipe.

[0015] 3. This invention utilizes a structure formed by a drive cylinder, a column head, and other components to deliver a hollow ball to the connection point between the vertical pipe and the first vertical section of the U-shaped pipe. The horizontal cylinder is controlled to contract, causing the horizontal gate to move into the horizontal gate chamber. This, in turn, increases the downward flow of sewage within the cylinder, compressing the hollow ball and moving it to the first vertical section of the U-shaped pipe, placing it below the third one-way valve. The horizontal gate again divides the internal space of the vertical pipe, and the structure formed by the drive cylinder, column head, and other components delivers a hollow ball to the connection point between the vertical pipe and the first vertical section of the U-shaped pipe. A hollow sphere is conveyed, controlling the extension of the inflation cylinder. This causes the piston in the inflation cylinder to slide inside the air cylinder. At this time, the third one-way valve opens and the fourth one-way valve closes, allowing air from inside the air cylinder to flow into the first vertical section of the U-shaped tube through the third one-way valve. At this point, wastewater and air are present on the underside of the hollow sphere at the contact point between the first vertical section of the U-shaped tube and the vertical pipe, marking the first contact between the wastewater and air. When the inflation cylinder retracts, the third one-way valve closes and the fourth one-way valve opens, thus replenishing air into the inflation cylinder, making it horizontal. The carrier plate does not block the vertical pipe. Under the gravitational potential energy of the sewage inside the heightened cylinder, the hollow spheres in the first vertical section of the U-shaped pipe move downwards. The hollow spheres compress the air and sewage inside the U-shaped pipe, causing them to be discharged through the channel formed by the discharge pipe and the second one-way valve. This achieves the purpose of contacting the air with the sewage in the sewage container, realizing secondary aeration. Under the gravitational potential energy, the hollow spheres converge in the second vertical section of the U-shaped pipe. By evenly installing multiple first one-way valves on the outer surface of the second vertical section of the U-shaped pipe, it is easy to discharge the air between adjacent hollow spheres. The residual air and sewage are circulated through the combined action of components such as the drive cylinder, straight cylinder, and plug, causing the hollow ball to enter the first vertical section connecting the vertical pipe and the U-shaped pipe in sequence. This circulation utilizes the gravitational potential energy of the sewage to allow air to penetrate into the deeper bottom layer of the sewage. Compared to aeration methods that use air pumps and motors to drive impellers, this method avoids situations where the air pumps and motors are under high load. At the same time, the drive cylinder, air filling cylinder, vertical cylinder, and horizontal cylinder overcome the low water pressure, thereby reducing energy consumption.

[0016] 4. When the worn hollow balls need to be replaced, the horizontal gate cuts off the vertical pipe, and the structure formed by the connecting plate and the plug is removed. Then, the hollow balls in the second vertical part of the U-shaped tube are pushed one by one to the pipe joint using the structure formed by the drive cylinder and the column head. This makes it easy to remove the hollow balls from the pipe joint. When the drive cylinder moves the column head, the column head drives the rigid pipe to slide along the guide hole, thus not affecting the sliding of the column head. Before the hollow balls move to the pipe joint, the suction cylinder is extended, and then the suction cylinder drives the second rubber plug to move inside the suction cylinder, so that the air in the suction cylinder flows into the cover plate and the column head through the channel formed by the hose and the rigid pipe. Inside the space, the first rubber plug slides inside the column head. In the initial state, the length formed by the spring and the lifting rod is greater than the length of the top rod. Therefore, the lifting rod first passes through the lower hole and contacts the hollow ball. Under the action of the lifting rod, the hollow ball is prevented from sliding into the first vertical part of the U-shaped tube. As the air in the space formed by the cover plate and the column head increases, the top rod squeezes the hollow ball, causing the hollow ball to be discharged from the pipe joint. During the process of squeezing the hollow ball, the spring is in a compressed state and its length is shortened, so the lifting rod does not move with the movement of the top rod. When the suction cylinder is contracted, the air inside the column head flows back into the suction cylinder. At this time, both the top rod and the lifting rod are retracted into the column head. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0018] Figure 1 This is a schematic diagram of the structure of an aeration device according to the present invention;

[0019] Figure 2 This is an enlarged view of point A in an aeration device of the present invention;

[0020] Figure 3 This is an enlarged view of point B in an aeration device of the present invention;

[0021] Figure 4 This is a schematic diagram of the assembly of a straight cylinder, U-tube, hollow ball, column head, plug and vertical pipe in an aeration device of the present invention;

[0022] Figure 5 This is an exploded view of the assembly of the spring, top rod, lifting rod, first rubber plug, cover plate and column head in an aeration device of the present invention;

[0023] Figure 6 This is an exploded view of the assembly of the piston, round cover and air cylinder in an aeration device of the present invention;

[0024] Figure 7 This is a perspective view of the horizontal gate chamber in an aeration device according to the present invention;

[0025] Figure 8 This is a perspective view of a horizontal gate in an aeration device according to the present invention;

[0026] Figure 9 This is a perspective view of the vertical gate chamber in an aeration device according to the present invention;

[0027] Figure 10 This is a perspective view of a vertical gate in an aeration device according to the present invention;

[0028] Figure 11 This is an assembly diagram of the suction cylinder, the second rubber stopper, and the suction tube in an aeration device of the present invention.

[0029] In the diagram: 1. Vertical pipe, 2. Straight cylinder, 3. Support arm, 4. Diagonal rod, 5. Box cover, 6. Switch box, 7. First check valve, 8. Second vertical section, 9. Discharge pipe, 10. Second check valve, 11. Horizontal section, 12. First vertical section, 13. Inflation cylinder, 14. Air cylinder, 15. Horizontal gate chamber, 16. Horizontal cylinder, 17. Elevation cylinder, 18. Third check valve, 19. Inlet pipe, 20. Fourth check valve, 21. Connecting plate, 22. Pipe joint, 23. Vertical cylinder, 24. Vertical gate chamber, 25. End cap, 2 6. Rigid pipe; 27. Flexible hose; 28. Drive cylinder; 29. ​​Horizontal arc-shaped opening; 30. Vertical arc-shaped opening; 31. Column head; 32. Hollow ball; 33. Plug; 34. Middle hole; 35. Lower hole; 36. Lifting rod; 37. Limiting sleeve; 38. Spring; 39. Support sleeve; 40. Cover plate; 41. First rubber plug; 42. Top rod; 43. Piston; 44. Round cover; 45. Horizontal gate; 46. Vertical gate; 47. Suction cylinder; 48. Branch pipe head; 49. Second rubber plug; 50. Top cover; 51. Suction cylinder. Detailed Implementation

[0030] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments. Unless otherwise specified, the materials and equipment used in this embodiment are commercially available. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0031] In the description of this application, it should be understood that the terms "upper," "lower," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0032] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "connected," "linked," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a connection through an intermediary, or a connection within two elements or an interaction between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0033] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0034] Example 1:

[0035] For deep wastewater, after the aeration heads are placed at the bottom of the wastewater, the air supply equipment that aerates the water needs to overcome the water pressure. This puts the air supply equipment, such as the air pump, under a long-term high load, which will affect the service life of the air pump. If multiple air pumps or high-power air pumps are used, the power consumption will be high. Another method of aeration is mechanical stirring. The motor is placed above the wastewater surface. The motor output end needs to be installed with a long drive shaft so that the impeller that disperses the air is at the bottom of the wastewater. On the one hand, the increased length of the drive shaft will affect the stability of the structure. On the other hand, the resistance that the motor has to overcome to drive the impeller at the bottom of the deep wastewater will also increase. That is, the motor is also under a high load, which will also affect the life of the motor.

[0036] To resolve the above issues, please refer to [link / reference]. Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 , Figure 8, Figure 9 and Figure 10 The present invention provides a technical solution: an aeration device, including a vertical pipe 1, the lower end of which is connected to the upper end of the first vertical part 12 of a U-shaped pipe, the upper end of the first vertical part 12 of the U-shaped pipe being flush with the upper end of the second vertical part 8 of the U-shaped pipe, the upper end of the second vertical part 8 of the U-shaped pipe being connected to a straight cylinder 2, one end of which is connected to the connection between the first vertical part 12 of the U-shaped pipe and the vertical pipe 1, a plurality of hollow balls 32 are provided inside the U-shaped pipe, the diameter of the hollow balls 32 being the same as the inner diameter of the U-shaped pipe, a discharge pipe 9 is installed at the bottom of the horizontal part 11 of the U-shaped pipe, a second one-way valve 10 is installed at the lower end of the discharge pipe 9 at the bottom of the agricultural wastewater treatment container, the second one-way valve 10 is open in a direction away from the discharge pipe 9, and the U-shaped pipe and the vertical pipe 1 together form a channel for the circulation of the hollow balls 32.

[0037] A column head 31 for pushing the hollow ball 32 is slidably installed inside the straight cylinder 2. The outer diameter of the column head 31 is the same as the inner diameter of the straight cylinder 2. A detachable end cap 25 is installed at the end of the straight cylinder 2 away from the vertical pipe 1. A drive cylinder 28 is installed at the middle of the lower surface of the end cap 25. The movable end of the drive cylinder 28 extends into the straight cylinder 2 and is connected and fixed to the column head 31. A vertical arc-shaped opening 30 is opened at the upper part of the outer surface of the end of the straight cylinder 2 near the vertical pipe 1. A vertical gate chamber 24 is provided on the upper side of the vertical arc-shaped opening 30. The end of the vertical gate chamber 24 facing the straight cylinder 2 is open and is connected and fixed to the straight cylinder 2. A vertical cylinder 23 is installed on the upper surface of the vertical gate chamber 24. The movable end of the vertical cylinder 23 extends into the vertical gate chamber 24 and is installed with a vertical gate 46 for separating the internal space of the straight cylinder 2. The vertical gate 46 is slidably installed in the vertical gate chamber 24.

[0038] Multiple hollow spheres 32 are arranged within the channel formed by the straight cylinder 2 and the U-shaped pipe. The diameter of the hollow spheres 32 is the same as the inner diameter of the U-shaped pipe. A discharge pipe 9 with a second one-way valve 10 is installed at the bottom of the horizontal part 11 of the U-shaped pipe, and multiple first one-way valves 7 are installed on the surface of the second vertical part 8 of the U-shaped pipe. The first one-way valves 7 are used to discharge residual moisture and air between two adjacent hollow spheres 32. The vertical cylinder 23 is controlled to extend while the drive cylinder 28 retracts. The vertical cylinder 23 drives the vertical gate 46 to move into the straight cylinder 2, thereby separating the internal space of the straight cylinder 2 and preventing sewage from the vertical pipe 1 from entering the straight cylinder. Inside section 2, after the column head 31 moves between the second vertical section 8 of the U-shaped tube and the end cap 25, the uppermost hollow ball 32 inside the second vertical section 8 of the U-shaped tube enters the straight cylinder 2 under the mutual compression of the hollow balls 32. The control drive cylinder 28 extends and the control vertical cylinder 23 retracts, so that the vertical gate 46 no longer separates the internal space of the straight cylinder 2. Thus, the column head 31 pushes the hollow ball 32 between the vertical tube 1 and the U-shaped tube connection part. The above operation is repeated, so that the hollow balls 32 inside the second vertical section 8 of the U-shaped tube can be pushed into the space formed by the vertical tube 1 and the first vertical section 12 of the U-shaped tube in sequence.

[0039] A heightening cylinder 17 is installed at the upper end of the vertical pipe 1. Multiple first one-way valves 7 are equidistantly installed on the surface of the second vertical section 8 of the U-shaped pipe. The first one-way valves 7 are open in the direction away from the second vertical section 8 of the U-shaped pipe. A third one-way valve 18 is installed on the outer surface of the first vertical section 12 of the U-shaped pipe. The other end of the third one-way valve 18 is connected to the air cylinder 14 and is open in the direction away from the air cylinder 14. A detachable round cover 44 is installed at the end of the air cylinder 14 away from the third one-way valve 18. An inflation cylinder 13 is installed on the side of the round cover 44 facing away from the air cylinder 14. The movable end of the inflation cylinder 13 extends through the round cover 44 into the air cylinder 14. A first piston 43 is connected and fixed to the movable end of the inflation cylinder 13. The first piston 43 slides... An air inlet pipe 19 is installed on the upper part of the outer surface of the air cylinder 14 near the third one-way valve 18. The upper end of the air inlet pipe 19 extends above the surface of the agricultural wastewater and is equipped with a fourth one-way valve 20. The fourth one-way valve 20 is open in the direction close to the air inlet pipe 19, controlling the extension of the inflation cylinder 13. Thus, the inflation cylinder 13 drives the piston 43 to slide inside the air cylinder 14. At this time, the third one-way valve 18 is open and the fourth one-way valve 20 is closed, so that the air in the air cylinder 14 flows into the space of the first vertical part (12) of the U-shaped tube through the third one-way valve 18. When the inflation cylinder 13 is controlled to contract, the third one-way valve 18 is closed and the fourth one-way valve 20 is opened, thereby replenishing the air in the inflation cylinder 14.

[0040] A horizontal arc-shaped opening 29 is provided on the outer surface of the vertical pipe 1. A horizontal gate chamber 15 is provided outside the horizontal arc-shaped opening 29. The end of the horizontal gate chamber 15 facing the vertical pipe 1 is open and is connected and fixed to the vertical pipe 1. A horizontal gate 45 is slidably installed inside the horizontal gate chamber 15. The horizontal gate 45 is connected and fixed to the movable end of the horizontal cylinder 16. The cylinder body end of the horizontal cylinder 16 is installed on the side of the horizontal gate chamber 15 away from the vertical pipe 1. Before pumping sewage into the heightening cylinder 17, the horizontal cylinder 16 is controlled to extend. The extension of the horizontal cylinder 16 drives the horizontal gate 45 to move into the vertical pipe 1, thereby achieving the function of separating the internal space of the vertical pipe 1, so that the sewage in the heightening cylinder 17 does not apply pressure to the hollow ball 32 at the connection part of the first vertical part 12 of the vertical pipe 1 and the U-shaped pipe.

[0041] A hollow ball 32 is conveyed to the connection between the vertical pipe 1 and the first vertical section 12 of the U-shaped pipe using a structure formed by components such as the drive cylinder 28 and the column head 31. The horizontal cylinder 16 is controlled to contract, causing the horizontal gate 45 to move into the horizontal gate chamber 15. This causes the sewage in the heightened cylinder 17 to flow downwards and compress the hollow ball 32, moving it to the first vertical section 12 of the U-shaped pipe, below the third one-way valve 18. The horizontal gate 45 again separates the internal space of the vertical pipe 1, and the structure formed by the drive cylinder 28 and the column head 31 then conveys the hollow ball 32 to the connection between the vertical pipe 1 and the first vertical section 12 of the U-shaped pipe. 2. A hollow ball 32 is conveyed at the connection point, controlling the extension of the inflation cylinder 13. This causes the piston 43 to slide within the air cylinder 14. At this time, the third one-way valve 18 opens and the fourth one-way valve 20 closes, allowing air from the air cylinder 14 to flow through the third one-way valve 18 into the space of the first vertical section 12 of the U-shaped tube. At this point, wastewater and air are present on the lower side of the hollow ball 32 at the contact point between the first vertical section 12 of the U-shaped tube and the vertical pipe 1, marking the first contact between the wastewater and air. When the inflation cylinder 13 contracts, the third one-way valve 18 closes and the fourth one-way valve 20 opens, thus allowing air to flow into the air cylinder 14. Air is added to the air cylinder 14 to prevent the horizontal carrier plate from blocking the vertical pipe 1. Under the gravitational potential energy of the sewage in the heightening cylinder 17, the hollow ball 32 in the first vertical section 12 of the U-shaped pipe moves downward. The hollow ball 32 compresses the air and sewage in the U-shaped pipe, allowing the air and sewage to be discharged through the channel formed by the discharge pipe 9 and the second one-way valve 10, achieving the purpose of contacting the air with the sewage in the sewage container and realizing secondary aeration. Under the gravitational potential energy, the hollow ball 32 converges in the second vertical section 8 of the U-shaped pipe. By evenly installing multiple first one-way valves 7 on the outer surface of the second vertical section 8 of the U-shaped pipe, it is convenient to discharge the sewage from two adjacent pipes. The residual air and sewage between the hollow balls 32 are driven by the combined action of components such as the drive cylinder 28, the straight cylinder 2, and the plug 33, causing the hollow balls 32 to sequentially enter the connection point between the vertical pipe 1 and the first vertical section 12 of the U-shaped pipe. This cycle is repeated, and the gravitational potential energy of the sewage is used to allow air to enter the deeper bottom layer of the sewage. Compared with the aeration method that uses an air pump and motor to drive the impeller, the air pump and motor will not be under high load. At the same time, the drive cylinder 28, the air filling cylinder 13, the vertical cylinder 23, and the horizontal cylinder 16 overcome the low water pressure, thereby reducing energy consumption.

[0042] Example 2:

[0043] Multiple hollow spheres 32 are placed in the channel formed by the U-shaped tube and the straight tube 2. When the hollow spheres 32 are worn and can no longer separate the internal space of the U-shaped tube, it is difficult to replace the hollow spheres 32 because the channel structure formed by the U-shaped tube, the straight tube 2 and the vertical tube 1 is fixed.

[0044] To resolve the above technical issues, please refer to [link / reference]. Figure 1 , Figure 2 and Figure 4A pipe joint 22 is provided on the side of the lower outer surface of the vertical pipe 1 away from the straight cylinder 2. The inner diameter of the pipe joint 22 is the same as the inner diameter of the straight cylinder 2. A plug 33 is inserted into the pipe joint 22. A connecting plate 21 is connected and fixed on the side of the plug 33 away from the pipe joint 22. The connecting plate 21 is connected and fixed to the pipe joint 22 by multiple bolts. When it is necessary to replace the worn hollow ball 32, the horizontal gate 45 cuts off the vertical pipe 1 and removes the structure formed by the connecting plate 21 and the plug 33. Then, the hollow ball 32 in the second vertical part 8 of the U-shaped pipe is pushed one by one to the pipe joint 22 by the structure formed by the drive cylinder 28 and the column head 31, so that the hollow ball 32 can be easily removed from the pipe joint 22.

[0045] Example 3:

[0046] When the hollow ball 32 is pushed to the pipe joint 22, under the action of gravity, the hollow ball 32 is likely to slide into the first vertical part 12 of the U-shaped tube, which makes it difficult to remove the hollow ball 32.

[0047] To resolve the above issues, please refer to: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 11 The column head 31 is a hollow structure. The side of the column head 31 facing away from the plug 33 is open and fitted with a cover plate 40. A rigid tube 26 is installed through the cover plate 40 on the side facing away from the plug 33. The end cap 25 has a guide hole on the side facing away from the straight cylinder 2. The rigid tube 26 passes through the guide hole. The end of the rigid tube 26 away from the cover plate 40 is connected to the flexible hose 27. The other end of the flexible hose 27 is adjacent to and connected to the branch pipe head 48. The branch pipe head 48 is installed at the bottom of the suction cylinder 47. The upper end of the suction cylinder 47 is open and is fitted with a top cover 50. A suction cylinder 51 is mounted on the upper surface of the top cover 50. The movable end of the suction cylinder 51 extends into the suction cylinder 47 and is fitted with a second rubber plug 49. The second rubber plug 49 is slidably installed inside the suction cylinder 47. When the drive cylinder 28 moves the column head 31, the column head 31 drives the rigid tube 26 to slide along the guide hole, thus not affecting the sliding of the column head 31. The design of the flexible hose 27 facilitates limiting the position of the suction cylinder 47.

[0048] A first rubber plug 41 is slidably installed inside the column head 31. A spring 38 is installed inside a support sleeve 39 located at the lower part of the side of the first rubber plug 41 facing away from the cover plate 40. The other end of the spring 38 is installed inside a limiting sleeve 37. The side of the limiting sleeve 37 facing away from the spring 38 is closed. A lifting rod 36 for limiting the position of the hollow ball 32 is installed at the middle part of the side of the limiting sleeve 37 facing away from the spring 38. An opening is provided at the lower part of the side of the column head 31 facing away from the end cover 25. The lifting rod 36 is inserted into the lower small hole 35, which cooperates with the lifting rod 36. The first rubber plug 41 is installed at the middle of the side facing away from the end cover 25, and a top rod 42 for compressing the hollow ball 32 is installed. The column head 31 is provided with a middle small hole 34 at the middle of the side facing away from the end cover 25. The end of the top rod 42 away from the first rubber plug 41 is inserted into the middle small hole 34. The length of the structure formed by the lifting rod 36 and the spring 38 is greater than the length of the top rod 42.

[0049] When it is necessary to replace the worn hollow ball 32, the horizontal gate 45 cuts off the vertical pipe 1, and the structure formed by the connecting plate 21 and the plug 33 is removed. Then, the hollow balls 32 in the second vertical part 8 of the U-shaped tube are pushed one by one to the pipe joint 22 using the structure formed by the drive cylinder 28 and the column head 31, so that the hollow balls 32 can be easily removed from the pipe joint 22. Before the hollow ball 32 moves to the pipe joint 22, the suction cylinder 51 is extended, and then the suction cylinder 51 drives the second rubber plug 49 to move in the suction cylinder 47, so that the air in the suction cylinder 47 flows into the space formed by the cover plate 40 and the column head 31 through the channel formed by the hose 27 and the rigid pipe 26. At this time, the first rubber plug 41 slides in the column head 31. The length formed by the lower spring 38 and the lifting rod 36 is greater than the length of the top rod 42. Therefore, the lifting rod 36 first passes through the lower hole and contacts the hollow ball 32. Under the action of the lifting rod 36, the hollow ball 32 is prevented from sliding into the first vertical part 12 of the U-shaped tube. As the air in the space formed by the cover plate 40 and the column head 31 increases, the top rod 42 squeezes the hollow ball 32, causing the hollow ball 32 to be discharged from the pipe joint 22. During the process of the top rod 42 squeezing the hollow ball 32, the spring 38 is in a compressed state and its length is shortened, so the lifting rod 36 does not move with the movement of the top rod 42. When the suction cylinder 51 is controlled to contract, the air in the column head 31 flows back into the suction cylinder 47. At this time, both the top rod 42 and the lifting rod 36 are retracted into the column head 31.

[0050] The suction cylinder 47 is installed inside the switch box 6. The top of the switch box 6 is open and has a removable cover 5. A through hole is opened on one side of the switch box 6, through which the flexible hose 27 passes. A support arm 3 is fixedly connected to one side of the switch box 6. The end of the support arm 3 away from the switch box 6 is fixedly connected to the vertical pipe 1. A diagonal rod 4 is fixedly connected to the upper part of the outer surface of the support arm 3. The end of the diagonal rod 4 away from the support arm 3 is fixedly connected to the vertical pipe 1. The diagonal rod 4 improves the stability of the connection between the support arm 3 and the vertical pipe 1. The switch box 6 provides installation space for various control switches and also provides installation space for the suction cylinder 47.

[0051] Although only certain components and embodiments of this application have been illustrated and described, many modifications and alterations will be apparent to those skilled in the art without actually departing from the scope and spirit of the claims, such as variations in the size, dimensions, structure, shape and proportion of the various elements, installation arrangement, material use, color, orientation, etc.

[0052] The above embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of protection of the present invention. Any non-substantial changes and substitutions made by those skilled in the art based on the embodiments of the present invention shall fall within the scope of protection claimed by the present invention.

Claims

1. An aeration device, comprising a vertical pipe, characterized in that: The lower end of the vertical pipe is connected to the upper end of the first vertical section of the U-shaped pipe. The upper end of the first vertical section of the U-shaped pipe is flush with the upper end of the second vertical section of the U-shaped pipe. The upper end of the second vertical section of the U-shaped pipe is connected to a straight cylinder. One end of the straight cylinder is connected to the connection point between the first vertical section of the U-shaped pipe and the vertical pipe. The U-shaped pipe contains multiple hollow spheres, the diameter of which is the same as the inner diameter of the U-shaped pipe. A discharge pipe is installed at the bottom of the horizontal section of the U-shaped pipe, and a first discharge pipe is installed at the lower end of the discharge pipe, located at the bottom of the agricultural wastewater treatment container. Two one-way valves, the second one-way valve being open in a direction away from the discharge pipe, a drive unit installed inside the straight cylinder for allowing the hollow ball inside the second vertical section of the U-shaped pipe to enter the second vertical section of the U-shaped pipe, an elevating cylinder installed at the upper end of the vertical pipe, an air filling device installed on the outer surface of the first vertical section of the U-shaped pipe, a plurality of first one-way valves equidistantly installed on the surface of the second vertical section of the U-shaped pipe, the first one-way valves being open in a direction away from the second vertical section of the U-shaped pipe, and a partition for cutting off the internal space of the vertical pipe installed on the outer surface of the vertical pipe; The heightened cylinder is used to contain sewage to utilize its gravitational potential energy. Before pumping sewage into the heightened cylinder, the separator cuts off the internal space of the vertical pipe to prevent the sewage in the heightened cylinder from exerting pressure on the hollow ball at the connection between the vertical pipe and the first vertical part of the U-shaped pipe. After the sewage is pumped into the heightened cylinder, the separator releases the cutoff on the internal space of the vertical pipe, allowing the sewage in the heightened cylinder to flow downwards and squeeze the hollow ball, pushing the hollow ball to move within the first vertical part of the U-shaped pipe to compress the air inside the U-shaped pipe and allow it to enter the bottom layer of the sewage through the discharge pipe and the second one-way valve.

2. The aeration device according to claim 1, characterized in that: The driving component includes a column head. A column head for pushing a hollow ball is slidably installed inside the straight cylinder. The outer diameter of the column head is the same as the inner diameter of the straight cylinder. A detachable end cap is installed at the end of the straight cylinder away from the vertical pipe. A driving cylinder is installed at the middle of the lower surface of the end cap. The movable end of the driving cylinder extends into the straight cylinder and is connected and fixed to the column head. A vertical arc-shaped opening is opened at the upper part of the outer surface of the end of the straight cylinder near the vertical pipe. A vertical gate chamber is provided on the upper side of the vertical arc-shaped opening. The end of the vertical gate chamber facing the straight cylinder is open and connected and fixed to the straight cylinder. A vertical cylinder is installed on the upper surface of the vertical gate chamber. The movable end of the vertical cylinder extends into the vertical gate chamber and is installed with a vertical gate for separating the internal space of the straight cylinder. The vertical gate is slidably installed in the vertical gate chamber.

3. An aeration device according to claim 1, characterized in that: The gas filling device includes a gas cylinder. A third one-way valve is installed on the outer surface of the first vertical part of the U-shaped tube. The other end of the third one-way valve is connected to the gas cylinder and is open in the direction away from the gas cylinder. A detachable round cover is installed on the end of the gas cylinder away from the third one-way valve. An inflation cylinder is installed on the side of the round cover away from the gas cylinder. The movable end of the inflation cylinder extends through the round cover into the gas cylinder. A first piston is fixedly connected to the movable end of the inflation cylinder. The first piston is slidably installed in the gas cylinder. An air inlet pipe is installed on the upper part of the outer surface of the gas cylinder near the third one-way valve. The upper end of the air inlet pipe extends above the surface of the agricultural wastewater and is equipped with a fourth one-way valve. The fourth one-way valve is open in the direction near the air inlet pipe.

4. An aeration device according to claim 1, characterized in that: The separator includes a horizontal gate chamber. A horizontal arc-shaped opening is provided on the outer surface of the vertical pipe. A horizontal gate chamber is provided outside the horizontal arc-shaped opening. The end of the horizontal gate chamber facing the vertical pipe is open and is connected and fixed to the vertical pipe. A horizontal gate is slidably installed in the horizontal gate chamber. The horizontal gate is connected and fixed to the movable end of a horizontal cylinder. The cylinder body end of the horizontal cylinder is installed on the side of the horizontal gate chamber away from the vertical pipe.

5. An aeration device according to claim 2, characterized in that: A pipe connector is provided on the outer surface of the lower end of the vertical pipe, opposite to the straight cylinder. The inner diameter of the pipe connector is the same as that of the straight cylinder. A plug is inserted into the pipe connector. A connecting plate is fixed to the side of the plug opposite to the pipe connector. The connecting plate is fixed to the pipe connector by multiple bolts. The column head is a hollow structure. The side of the column head opposite to the plug is open and fitted with a cover plate. A rigid pipe is installed through the cover plate on the side opposite to the plug. A guide hole is opened on the side of the end cap opposite to the straight cylinder. The rigid pipe passes through the guide hole. The end of the rigid pipe away from the cover plate is connected to a flexible hose. The other end of the flexible hose is adjacent to and connected to a branch pipe head. The branch pipe head is installed at the bottom of the suction cylinder. The upper end of the suction cylinder is open and fitted with a top cover. A suction cylinder is installed on the upper surface of the top cover. The movable end of the suction cylinder extends into the suction cylinder and is installed... A second rubber stopper is slidably installed inside the suction cylinder. A first rubber stopper is slidably installed inside the column head. A spring is installed at the lower part of the side of the first rubber stopper facing away from the cover plate. The other end of the spring is installed inside a limiting sleeve. The side of the limiting sleeve facing away from the spring is closed. A lifting rod for limiting the position of the hollow ball is installed at the middle part of the side of the limiting sleeve facing away from the spring. A small lower hole that cooperates with the lifting rod is opened at the lower part of the side of the column head facing away from the end cover. The lifting rod is inserted into the small lower hole. A top rod for squeezing the hollow ball is installed at the middle part of the side of the first rubber stopper facing away from the end cover. A small middle hole is opened at the middle part of the side of the column head facing away from the end cover. The end of the top rod away from the first rubber stopper is inserted into the small middle hole. The length of the structure formed by the lifting rod and the spring is greater than the length of the top rod.

6. An aeration device according to claim 5, characterized in that: The end of the spring away from the limiting sleeve extends into the support sleeve, and the support sleeve is connected and fixed to the first rubber plug.

7. An aeration device according to claim 5, characterized in that: The suction cylinder is installed inside the switch box. The top of the switch box is open and has a removable cover. A through hole is provided on one side of the switch box, through which the flexible hose passes. A support arm is fixedly connected to one side of the switch box. The end of the support arm away from the switch box is fixedly connected to a vertical pipe. A diagonal rod is fixedly connected to the upper part of the outer surface of the support arm. The end of the diagonal rod away from the support arm is fixedly connected to the vertical pipe.

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