Aeration device capable of increasing oxygen at different depths

Abstract

The invention discloses an aeration device capable of increasing oxygen at different depths, and relates to the technical field of aeration devices.The aeration device comprises an air blower and an aeration assembly, the output end of the left side of the air blower is connected with an air conveying pipe, and the depth adjusting assembly comprises an outer pipe, a first valve, a first corrugated pipe, a second valve, a second corrugated pipe and a third valve; the top of the first corrugated pipe is connected with a telescopic column, the aeration assembly is arranged at the bottom of the interior of the cavity, and the aeration assembly comprises a four-way disc, a third corrugated pipe, an auxiliary plate, an aeration head, aeration micropores, a spring, a supporting column, a disc and a dredging needle. According to the aeration device capable of increasing oxygen at different depths, the aeration depth can be adjusted in sewage, the dredging needles retreat from the interiors of the aeration micropores when the aeration head works, and after the aeration device stops working, the dredging needles penetrate through the aeration micropores to prevent impurities in water from entering the interiors of the aeration micropores, so that the smoothness of the aeration micropores in subsequent use is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of aeration devices, in particular to an aeration device capable of increasing oxygen at different depths. Background Art

[0002] Seawater desalination is the production of fresh water by desalination of seawater. It is an open-source incremental technology for realizing the utilization of water resources. Desalinated seawater can be used to supply domestic and industrial water. Desalinated seawater, like general water, will cause water pollution after use. To solve this problem, sewage will be treated. Biological method is a method of decomposing degradable organic matter in sewage by the metabolism of microorganisms in sewage. Because of its large processing capacity, low investment, and economic reliability, it has become the most common water treatment method in the world today. Among them, aerobic biological method requires oxygenation in sewage through aeration device.

[0003] As shown in the application number: CN201510114141.0, the invention discloses an aeration device, wherein the aeration head includes a main body, a bottom bracket, and a first joint portion combined with the aeration connector, wherein the main body is provided with aeration micropores; the aeration connector includes a second joint portion combined with the first joint portion, and a connection portion connected to an external aeration pipe. The aeration device of the present invention has a simple and stable structure, and the oxygen transported by the external aeration pipe enters the main body of the aeration head through the aeration connector, and then enters the sewage through the aeration micropores. The operation is stable and the aeration efficiency is high. The reverse force generated when the oxygen rushes out of the micropores causes the aeration device to vibrate slightly, thereby preventing the micropores from being blocked and extending the service life of the aeration device.

[0004] Aeration devices similar to the above applications currently have the following deficiencies: During actual use, the aeration device inputs oxygen into the sewage. During this process, the reverse force generated when the oxygen rushes out of the micropores causes the aeration device to vibrate slightly to prevent the micropores from being blocked. When the aeration device is not started, that is, when no oxygen is delivered, the aeration device cannot vibrate. At this time, the aeration micropores are still located inside the sewage, which can still easily cause the problem of micropore blockage.

[0005] Therefore, in view of this, the existing structure and defects are studied and improved, and an aeration device that can increase oxygen at different depths is proposed. Summary of the invention

[0006] In view of the deficiencies of the prior art, the present invention provides an aeration device capable of increasing oxygen at different depths, thereby solving the problems raised in the above-mentioned background technology.

[0007] To achieve the above purpose, the present invention is implemented through the following technical solutions: an aeration device that can increase oxygen at different depths, including a blower and an aeration component, the left output end of the blower is connected to an air supply pipe, and the end of the air supply pipe away from the blower is connected to a depth adjustment component, the depth adjustment component includes an outer tube, a first valve, a first bellows, a second valve, a second bellows and a third valve, the middle part of the bottom surface of the inner wall of the outer tube is provided with a first valve, and the top of the first valve is connected to the first bellows, the two sides of the bottom surface of the inner wall of the outer tube are provided with second valves, and the top of the second valve is provided with a second bellows, the top of the second bellows is provided with a third valve, and the top of the first bellows is connected to A telescopic column is provided, and a cavity is provided at the upper part of the telescopic column. The aeration component is arranged at the bottom of the cavity. The aeration component includes a four-way disk, a third bellows, an auxiliary plate, an aeration head, aeration micropores, a spring, a pillar, a disc and a dredging needle. The third bellows is fixed to the upper surface of the four-way disk, and the auxiliary plate is fixed to the top of the third bellows. The upper surface of the auxiliary plate is connected to the aeration head, and aeration micropores are evenly provided on the top surface of the aeration head. A spring is also provided on the upper surface of the auxiliary plate, and the spring is located outside the aeration head. The middle part of the upper surface of the four-way disk is connected to a pillar, and the pillar is located inside the third bellows. The top of the pillar is connected to a disc, and the surface of the disc is evenly distributed with dredging needles.

[0008] Furthermore, the gas delivery pipe is connected to the first bellows through a first valve, and the second bellows are symmetrically distributed about the vertical center axis of the first bellows.

[0009] Furthermore, the outer wall of the telescopic column is in contact with the inner wall of the outer tube, and the telescopic column forms a transmission structure through the second bellows, the air pipe and the blower.

[0010] Furthermore, the first bellows is connected to the third bellows through a four-way plate, and the second bellows is connected to the third bellows through a four-way plate.

[0011] Furthermore, the third corrugated pipe is connected to the aeration head through an auxiliary plate, and the outer wall of the auxiliary plate is in contact with the inner wall of the cavity.

[0012] Furthermore, the top of the spring is fixedly connected to the telescopic column, and the auxiliary plate and the aeration head are elastically connected to the telescopic column via the spring.

[0013] Furthermore, the outer diameter of the disk is smaller than the inner diameter of the aeration head, and the vertical central axes of the disk, the pillar and the aeration head coincide with each other.

[0014] Furthermore, the aeration assembly also includes a through hole, the surface of the disc is provided with the through hole, and the through hole is located between the dredging needles.

[0015] Furthermore, the diameter of the dredging needle is smaller than the diameter of the aeration micropore, and the vertical center axis of the dredging needle coincides with the vertical center axis of the aeration micropore.

[0016] Further, the steps of using the aeration device are as follows: Step 1: The outer tube is placed at the bottom of the aeration tank. The first valve and the third valve are closed first, and the second valve is opened. At this time, the blower inputs oxygen into the second bellows through the gas pipe. The second bellows then extends to lift the telescopic column to adjust the depth of the aeration head. Step 2: After the depth of the aeration head is determined, the second valve and the third valve are closed, and the first valve is opened. At this time, oxygen passes through the first bellows, the four-way plate, the third bellows, and the auxiliary plate in sequence and enters the interior of the aeration head; Step 3: As the air pressure inside the aeration head increases, the auxiliary plate rises along the inner wall of the cavity of the telescopic column. At this time, the third bellows stretches and the spring compresses, causing the aeration head to rise. At this time, the dredging needle descends and exits from the aeration micropores in disguised form, allowing oxygen to pass through the through holes on the surface of the disc and enter the sewage through the aeration micropores on the top of the aeration head; Step 4: When the aeration device stops operating, the first valve and the second valve are closed and the third valve is opened. At this time, the telescopic column slides down along the inner wall of the outer tube due to gravity. At this time, the first bellows and the second bellows shrink, and the residual oxygen inside the first bellows and the second bellows enters the aeration head along the four-way plate, the third bellows, and the auxiliary plate. Under the action of the residual oxygen, the aeration head rises to discharge the residual oxygen; Step 5: After the residual oxygen is discharged, the spring stretches and resets, and the third bellows compresses. At this time, the aeration head drops, allowing the dredging needle to pass through the aeration micropores and be exposed to the outside of the aeration head.

[0017] The present invention provides an aeration device capable of increasing oxygen at different depths, which has the following beneficial effects: The aeration device can adjust the oxygenation depth in sewage, and can perform oxygenation operations on sewage from different depths. When the aeration head is operating, the unclogging needle withdraws from the aeration micropores. At this time, based on the flow of oxygen from the inside to the outside, impurities in the sewage are prevented from clogging the aeration micropores. After the aeration device stops operating, the unclogging needle passes through the aeration micropores to prevent impurities in the water from entering the aeration micropores, so as to ensure the patency of the aeration micropores during subsequent use.

[0018] 1. The aeration device capable of increasing oxygen at different depths closes the first valve and the third valve, and opens the second valve. The blower then inputs oxygen into the second bellows through the air pipe. The second bellows is extended due to the oxygen injection to lift the telescopic column, thereby adjusting the depth of the aeration head so that the aeration head can increase oxygen at different depths in the sewage.

[0019] 2. The aeration device capable of increasing oxygen at different depths, when the aeration head is aerating and increasing oxygen in sewage, the third bellows is extended and the spring is compressed, at which time the dredging needle is lowered and withdrawn from the aeration micropores in disguised form, so that oxygen passes through the aeration micropores on the top of the aeration head and enters the sewage, wherein the through holes on the surface of the disc facilitate the smooth passage of oxygen, which is helpful to prevent the oxygen from being blocked by the disc and detouring to reduce the flow rate.

[0020] 3. The aeration device that can increase oxygen at different depths, when the aeration device stops working, the spring stretches and resets and the third bellows compresses, and the aeration head descends at this time, so that the dredging needle passes through the aeration micropores and is exposed to the outside of the aeration head. This arrangement is beneficial to prevent impurities in the sewage from being embedded in the aeration micropores when the aeration head stops working, thereby protecting the aeration micropores from being blocked when the aeration head is idle.

[0021] 4. The aeration device capable of increasing oxygen at different depths, when the aeration device stops operating, closes the first valve and the second valve and opens the third valve, at which time the telescopic column slides down along the inner wall of the outer tube due to gravity, at which time the first bellows and the second bellows contract, and the residual oxygen inside the first bellows and the second bellows enters the aeration head, and the aeration head rises under the action of the residual oxygen, thereby facilitating the discharge of the residual oxygen. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a schematic diagram of the internal structure of an air delivery pipe of an aeration device capable of increasing oxygen at different depths according to the present invention; Figure 2 This is a schematic diagram of the appearance structure of an air delivery pipe of an aeration device capable of increasing oxygen at different depths according to the present invention; Figure 3 This is a schematic diagram of the internal structure of a four-way plate of an aeration device capable of increasing oxygen at different depths according to the present invention; Figure 4 This is a schematic diagram of the internal structure of an aeration head of an aeration device capable of increasing oxygen at different depths according to the present invention; Figure 5 The invention provides an aeration device capable of increasing oxygen at different depths. Figure 4 The enlarged structural diagram at A in the middle; Figure 6 This is a schematic diagram of the top view of the aeration head of an aeration device capable of increasing oxygen at different depths according to the present invention; Figure 7 The present invention is a schematic diagram of a top view of a disc structure of an aeration device capable of increasing oxygen at different depths.

[0023] In the figure: 1. blower; 2. air supply pipe; 3. depth adjustment assembly; 301. outer tube; 302. first valve; 303. first bellows; 304. second valve; 305. second bellows; 306. third valve; 4. telescopic column; 5. cavity; 6. aeration assembly; 601. four-way plate; 602. third bellows; 603. auxiliary plate; 604. aeration head; 605. aeration micropores; 606. spring; 607. pillar; 608. disc; 609. unclogging needle; 610. through hole. DETAILED DESCRIPTION

[0024] The following embodiments of the present invention are described in further detail in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] like Figure 1-2 As shown, the present invention provides a technical solution: an aeration device capable of increasing oxygen at different depths, comprising a blower 1 and an aeration assembly 6, wherein the left output end of the blower 1 is connected to an air delivery pipe 2, and the end of the air delivery pipe 2 away from the blower 1 is connected to a depth adjustment assembly 3, the depth adjustment assembly 3 comprises an outer tube 301, a first valve 302, a first bellows 303, a second valve 304, a second bellows 305 and a third valve 306, the first valve 302 is arranged in the middle of the bottom surface of the inner wall of the outer tube 301, and the top of the first valve 302 is connected to the first bellows 303, the outer tube 3 01. A second valve 304 is arranged on both sides of the bottom surface of the inner wall, and a second bellows 305 is arranged on the top of the second valve 304, and a third valve 306 is arranged on the top of the second bellows 305. A telescopic column 4 is connected to the top of the first bellows 303. The gas pipe 2 is connected to the first bellows 303 through the first valve 302. The second bellows 305 are symmetrically distributed about the vertical center axis of the first bellows 303. The outer wall of the telescopic column 4 is in contact with the inner wall of the outer tube 301, and the telescopic column 4 forms a transmission structure with the second bellows 305, the gas pipe 2 and the blower 1; The specific operation is as follows: first, adjust the position of the aeration head 604 to make it reach the specified depth in the sewage. Specifically, first close the first valve 302 and the third valve 306, and open the second valve 304. At this time, the blower 1 inputs oxygen into the second bellows 305 through the air pipe 2, and the second bellows 305 extends to lift the telescopic column 4, thereby adjusting the depth of the aeration head 604 to the specified depth.

[0026] like Figure 1 , Figure 3-7As shown, a cavity 5 is opened in the upper part of the telescopic column 4, and an aeration assembly 6 is arranged at the bottom of the cavity 5. The aeration assembly 6 includes a four-way plate 601, a third bellows 602, an auxiliary plate 603, an aeration head 604, an aeration micropore 605, a spring 606, a support 607, a disc 608 and a dredging needle 609. The third bellows 602 is fixed to the upper surface of the four-way plate 601, and the auxiliary plate 603 is fixed to the top of the third bellows 602. The auxiliary plate 60 The upper surface of the auxiliary plate 603 is connected to an aeration head 604, and the top surface of the aeration head 604 is evenly provided with aeration micropores 605. The upper surface of the auxiliary plate 603 is also provided with a spring 606, and the spring 606 is located outside the aeration head 604. The middle part of the upper surface of the four-way plate 601 is connected to a pillar 607, and the pillar 607 is located inside the third corrugated pipe 602. The top of the pillar 607 is connected to a disk 608, and the surface of the disk 608 is evenly distributed with dredging needles 609. The third bellows 602 is connected to the aeration head 604 through the auxiliary plate 603, and the outer wall of the auxiliary plate 603 is in contact with the inner wall of the cavity 5, the top of the spring 606 is fixedly connected to the telescopic column 4, and the auxiliary plate 603 and the aeration head 604 are elastically connected to the telescopic column 4 through the spring 606, the outer diameter of the disk 608 is smaller than the inner diameter of the aeration head 604, and the vertical central axes of the disk 608, the pillar 607 and the aeration head 604 coincide with each other, and the aeration assembly 6 The disk 608 further includes a through hole 610. The through hole 610 is opened on the surface of the disk 608, and the through hole 610 is located between the dredging needles 609. The diameter of the dredging needles 609 is smaller than the diameter of the aeration micropores 605, and the vertical center axis of the dredging needles 609 coincides with the vertical center axis of the aeration micropores 605. The first bellows 303 is connected to the third bellows 602 through the four-way disk 601, and the second bellows 305 is connected to the third bellows 602 through the four-way disk 601. The specific operation is as follows: the second valve 304 and the third valve 306 are closed to keep the depth of the aeration head 604 unchanged, and then the first valve 302 is opened. At this time, oxygen passes through the first bellows 303, the four-way plate 601, the third bellows 602, and the auxiliary plate 603 in sequence and enters the aeration head 604. As the air pressure inside the aeration head 604 increases, the auxiliary plate 603 rises along the inner wall of the cavity 5 of the telescopic column 4. At this time, the third bellows 602 stretches and the spring 606 The compression causes the aeration head 604 to rise, and the dredging needle 609 then descends and exits from the aeration micropore 605 in disguised form, allowing the oxygen to pass through the through hole 610 on the surface of the disk 608 and enter the sewage through the aeration micropore 605 at the top of the aeration head 604. Since the oxygen is discharged from the inside to the outside, impurities in the sewage are prevented from clogging the aeration micropore 605. In addition, the through hole 610 on the surface of the disk 608 facilitates the smooth passage of oxygen, which helps prevent the oxygen from being blocked by the disk 608 and detoured. At low flow rate, when the aeration device stops working, the first valve 302 and the second valve 304 are closed and the third valve 306 is opened. At this time, the telescopic column 4 slides down along the inner wall of the outer tube 301 due to gravity. At this time, the first bellows 303 and the second bellows 305 shrink, and the residual oxygen inside the first bellows 303 and the second bellows 305 enters the aeration head 604 along the four-way plate 601, the third bellows 602 and the auxiliary plate 603. The lower aeration head 604 rises to discharge residual oxygen. Finally, when the air pressure inside the aeration head 604 is insufficient to support its rise, the spring 606 stretches and resets, and the third bellows 602 is compressed. At this time, the aeration head 604 descends, allowing the unblocking needle 609 to pass through the aeration micropores 605 and be exposed to the outside of the aeration head 604. The unblocking needle 609 passes through the aeration micropores 605 to prevent impurities in the water from entering the aeration micropores 605, so as to ensure the patency of the aeration micropores 605 during subsequent use.

[0027] In summary, if Figure 1-7 As shown, the steps for using the aeration device that can increase oxygen at different depths are as follows: Step 1: The outer tube 301 is placed at the bottom of the aeration tank, the first valve 302 and the third valve 306 are closed, and the second valve 304 is opened. At this time, the blower 1 inputs oxygen into the second bellows 305 through the gas pipe 2, and the second bellows 305 is stretched to lift the telescopic column 4, so as to adjust the depth of the aeration head 604; Step 2: After the depth of the aeration head 604 is determined, the second valve 304 and the third valve 306 are closed, and the first valve 302 is opened. At this time, oxygen passes through the first bellows 303, the four-way plate 601, the third bellows 602, and the auxiliary plate 603 in sequence and enters the interior of the aeration head 604; Step 3: As the air pressure inside the aeration head 604 increases, the auxiliary plate 603 rises along the inner wall of the cavity 5 of the telescopic column 4. At this time, the third bellows 602 stretches and the spring 606 compresses, causing the aeration head 604 to rise. At this time, the dredging needle 609 descends and exits from the aeration micropore 605 in disguised form, allowing oxygen to pass through the through hole 610 on the surface of the disc 608 and enter the sewage through the aeration micropore 605 at the top of the aeration head 604; Step 4: When the aeration device stops operating, the first valve 302 and the second valve 304 are closed and the third valve 306 is opened. At this time, the telescopic column 4 slides down along the inner wall of the outer tube 301 due to gravity. At this time, the first bellows 303 and the second bellows 305 shrink, and the residual oxygen inside the first bellows 303 and the second bellows 305 enters the aeration head 604 along the four-way plate 601, the third bellows 602, and the auxiliary plate 603. Under the action of the residual oxygen, the aeration head 604 rises to discharge the residual oxygen; Step 5: After the residual oxygen is discharged, the spring 606 stretches and resets, and the third bellows 602 compresses. At this time, the aeration head 604 descends, so that the dredging needle 609 passes through the aeration micropores 605 and is exposed to the outside of the aeration head 604.

[0028] The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the invention to the disclosed forms. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific uses.

Claims

1. An aeration device capable of increasing oxygen at different depths, comprising a blower (1) and an aeration assembly (6), characterized in that: The left output end of the blower (1) is connected to an air supply pipe (2), and the end of the air supply pipe (2) away from the blower (1) is connected to a depth adjustment component (3), the depth adjustment component (3) comprising an outer tube (301), a first valve (302), a first bellows (303), a second valve (304), a second bellows (305) and a third valve (306), the first valve (302) being arranged in the middle of the bottom surface of the inner wall of the outer tube (301), and the top of the first valve (302) A first bellows (303) is connected, second valves (304) are arranged on both sides of the bottom surface of the inner wall of the outer tube (301), and a second bellows (305) is arranged on the top of the second valve (304), and a third valve (306) is arranged on the top of the second bellows (305), and a telescopic column (4) is connected to the top of the first bellows (303), and a cavity (5) is opened in the upper part of the telescopic column (4), and the aeration component (6) is arranged at the bottom of the cavity (5), and the aeration component (6) is arranged at the bottom of the cavity (5). The component (6) comprises a four-way plate (601), a third bellows (602), an auxiliary plate (603), an aeration head (604), aeration micropores (605), a spring (606), a support (607), a disc (608) and a dredging needle (609), wherein the third bellows (602) is fixed on the upper surface of the four-way plate (601), and the top of the third bellows (602) is fixed with the auxiliary plate (603), the upper surface of the auxiliary plate (603) is connected to the aeration head (604), and the aeration micropores (605) are connected to the auxiliary plate (603). Aeration micropores (605) are evenly arranged on the top surface of the air head (604); a spring (606) is also arranged on the upper surface of the auxiliary plate (603), and the spring (606) is located outside the aeration head (604); a support (607) is connected to the middle of the upper surface of the four-way plate (601), and the support (607) is located inside the third corrugated tube (602); a disc (608) is connected to the top of the support (607), and dredging needles (609) are evenly distributed on the surface of the disc (608).

2. An aeration device capable of increasing oxygen at different depths according to claim 1, characterized in that: The gas delivery pipe (2) is connected to the first bellows (303) via the first valve (302), and the second bellows (305) are symmetrically distributed about the vertical center axis of the first bellows (303).

3. The aeration device capable of increasing oxygen at different depths according to claim 1, characterized in that: The outer wall of the telescopic column (4) fits into the inner wall of the outer tube (301), and the telescopic column (4) forms a transmission structure through the second corrugated tube (305), the air delivery pipe (2) and the blower (1).

4. The aeration device capable of increasing oxygen at different depths according to claim 1, characterized in that: The first bellows (303) is connected to the third bellows (602) via a four-way plate (601), and the second bellows (305) is connected to the third bellows (602) via a four-way plate (601).

5. The aeration device capable of increasing oxygen at different depths according to claim 1, characterized in that: The third corrugated pipe (602) is connected to the aeration head (604) via the auxiliary plate (603), and the outer wall of the auxiliary plate (603) is in contact with the inner wall of the cavity (5).

6. The aeration device capable of increasing oxygen at different depths according to claim 1, characterized in that: The top of the spring (606) is fixedly connected to the telescopic column (4), and the auxiliary plate (603) and the aeration head (604) are elastically connected to the telescopic column (4) via the spring (606).

7. The aeration device capable of increasing oxygen at different depths according to claim 1, characterized in that: The outer diameter of the disk (608) is smaller than the inner diameter of the aeration head (604), and the vertical central axes of the disk (608), the support column (607) and the aeration head (604) coincide with each other.

8. The aeration device capable of increasing oxygen at different depths according to claim 1, characterized in that: The aeration assembly (6) further comprises a through hole (610). The surface of the disc (608) is provided with the through hole (610), and the through hole (610) is located between the dredging needles (609).

9. An aeration device capable of increasing oxygen at different depths according to claim 8, characterized in that: The diameter of the dredging needle (609) is smaller than the diameter of the aeration micropore (605), and the vertical center axis of the dredging needle (609) coincides with the vertical center axis of the aeration micropore (605).

10. An aeration device capable of increasing oxygen at different depths according to any one of claims 1 to 9, characterized in that: The steps for using the aeration device are as follows: Step 1: The outer tube (301) is placed at the bottom of the aeration tank, and the first valve (302) and the third valve (306) are closed, while the second valve (304) is opened. At this time, the blower (1) inputs oxygen into the second bellows (305) through the gas pipe (2), and the second bellows (305) is stretched to lift the telescopic column (4), thereby adjusting the depth of the aeration head (604); Step 2: After the depth of the aeration head (604) is determined, the second valve (304) and the third valve (306) are closed, and the first valve (302) is opened. At this time, oxygen passes through the first bellows (303), the four-way plate (601), the third bellows (602), and the auxiliary plate (603) in sequence and enters the interior of the aeration head (604); Step 3: As the air pressure inside the aeration head (604) increases, the auxiliary plate (603) rises along the inner wall of the cavity (5) of the telescopic column (4). At this time, the third bellows (602) stretches and the spring (606) compresses, causing the aeration head (604) to rise. At this time, the dredging needle (609) descends and exits from the aeration micropore (605) in disguised form, allowing oxygen to pass through the through hole (610) on the surface of the disc (608) and enter the sewage through the aeration micropore (605) at the top of the aeration head (604); Step 4: When the aeration device stops operating, the first valve (302) and the second valve (304) are closed and the third valve (306) is opened. At this time, the telescopic column (4) slides down along the inner wall of the outer tube (301) due to the action of gravity. At this time, the first bellows (303) and the second bellows (305) are contracted, and the residual oxygen inside the first bellows (303) and the second bellows (305) enters the aeration head (604) along the four-way plate (601), the third bellows (602) and the auxiliary plate (603). Under the action of the residual oxygen, the aeration head (604) rises so that the residual oxygen is discharged; Step 5: After the residual oxygen is discharged, the spring (606) stretches and resets, and the third bellows (602) compresses. At this time, the aeration head (604) descends, allowing the dredging needle (609) to pass through the aeration micropores (605) and be exposed to the outside of the aeration head (604).

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