Anti-blocking aeration device

Abstract

This invention relates to the field of wastewater treatment technology, and in particular to an anti-clogging aeration device, comprising an aerator and a gas collection assembly. The aerator is located below the gas collection assembly, which has a first operating state and a second operating state in the aeration tank. When the gas collection assembly is in the first operating state, it is positioned a specified distance above the aerator. When the gas collection assembly is in the second operating state, it falls a specified distance to cover the aerator's air outlet. The first and second chambers collect the gas generated by the aerator, thereby allowing the liquid in the gas collection assembly to be discharged, forming an air chamber. The aerator is placed in the air chamber, isolating it from the wastewater in the aeration tank. When the blower is turned off, the negative pressure generated by the aerator is balanced through gas exchange between the first and second chambers, thus preventing impurities in the wastewater from clogging the aerator due to backflow.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to an anti-clogging aeration device. Background Technology

[0002] The most commonly used wastewater treatment method today is the activated sludge process. Specifically, activated sludge containing active microorganisms is discharged into the wastewater tank, and then aeration is carried out using aerators installed in the wastewater tank to maintain the activity of the microorganisms (providing the necessary oxygen for the microorganisms), and the active microorganisms are used to degrade pollutants in the wastewater.

[0003] Among them, microporous aerators are easy to install and have the best aeration effect. However, microporous aerators generally use blowers to supply oxygen. When the blower stops running, negative pressure is generated inside the aerator, which leads to backflow. The sewage in the aeration tank carries impurities and tries to pass through the aeration membrane. Impurities, mud particles, etc. are easily stuck in the micropores of the aeration membrane, causing blockage and affecting the aeration effect and the service life of the aeration device. Summary of the Invention

[0004] Therefore, it is necessary to provide an anti-clogging aeration device to address the problem that current aerators generate negative pressure when the blower stops, which draws impurities from the sewage into the aeration membrane, resulting in poor subsequent aeration effects.

[0005] The above objectives are achieved through the following technical solutions:

[0006] A clog-resistant aeration device includes an aerator and an air collection assembly.

[0007] The aerator is located below the air collection assembly.

[0008] The air collection component has a first working state and a second working state in the aeration tank.

[0009] When the air collection component is in its first working state, it is located at a specified distance above the aerator.

[0010] When the gas collection component is in the second working state, the gas collection component falls a specified distance to cover the air outlet of the aerator.

[0011] Preferably, the gas collection assembly has at least one first chamber and at least one second chamber inside, both of which are arranged along the direction of movement of the gas collection assembly, and a baffle is provided between the first chamber and the second chamber to adjust the volume of the first chamber and the second chamber.

[0012] Preferably, the baffle has a one-way valve for exchanging gas between the first chamber and the second chamber.

[0013] Preferably, there are at least two check valves, with at least one check valve having its one-way passage directed toward the first chamber and at least one check valve having its one-way passage directed toward the second chamber.

[0014] Preferably, the gas collection assembly further includes a transmission module, which is used to adjust the pressure change rate of the first chamber and the second chamber.

[0015] Preferably, the transmission module includes a piston rod, a synchronous shaft, and a rack rod. The synchronous shaft has a first gear and a second gear at both ends. The piston rod has teeth that can mesh with the second gear. The piston rod meshes with the second gear, and the rack rod meshes with the first gear. The rack rod is mounted on a baffle. One end of the piston rod passes through the baffle and extends into the second chamber, while the other end is located in the first chamber and communicates with the aeration tank.

[0016] Preferably, it also includes a lifting component, which is used to change the position of the air collecting component relative to the aerator.

[0017] Preferably, the lifting assembly includes a lifting column and a telescopic rod. The lifting column is used to define the position of the aerator and the air collection assembly, and the telescopic rod is used to push the air collection assembly to move. The telescopic rod is located in the lifting column.

[0018] Preferably, the aerator includes an air distribution pipe, a shell, an aeration membrane, and a filter membrane. The air distribution pipe is installed at the bottom of the lifting assembly, the shell is located above the air distribution pipe, the aeration membrane is located at the top of the shell to generate small-diameter, numerous bubbles, and the filter membrane is located below the aeration membrane to filter out impurities in the gas.

[0019] Preferably, the outer casing is provided with a sealing ring, which is used to seal between the aerator and the air collection component when the air collection component is in the second working state.

[0020] The beneficial effects of this invention are as follows: through the coordinated arrangement of the gas collection component and the aerator, the first chamber and the second chamber can collect the gas generated by the aerator, thereby allowing the liquid in the gas collection component to be discharged to form an air chamber. By placing the aerator in the air chamber, the aerator is isolated from the sewage in the aeration tank. When the blower is turned off, the negative pressure generated by the aerator is balanced through the gas exchange between the first chamber and the second chamber, thereby preventing impurities in the sewage from clogging the aerator due to backflow. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the anti-clogging aeration device provided in an embodiment of the present invention;

[0022] Figure 2 A right view of an anti-clogging aeration device provided in an embodiment of the present invention;

[0023] Figure 3 for Figure 2 Sectional view along the middle AA direction;

[0024] Figure 4 for Figure 2 Sectional view along the BB direction;

[0025] Figure 5 A schematic diagram of the gas collecting bottle of an anti-clogging aeration device provided in another embodiment of the present invention;

[0026] Figure 6 for Figure 5 A cross-sectional view along the CC direction;

[0027] Figure 7 for Figure 5 Sectional view along the DD direction;

[0028] Figure 8 Diagram showing the anti-backflow status of the aeration device to prevent clogging.

[0029] 100. Aerator; 101. Air distribution pipe; 102. Outer shell; 103. Filter membrane; 104. Aeration membrane; 105. Cover ring; 106. Vent bolt; 107. Sealing ring; 108. Storage channel; 200. Lifting assembly; 201. Lifting column; 202. Telescopic rod; 300. Air collection assembly; 301. Air collection bottle; 302. Slider; 303. Baffle; 304. One-way valve; 305. Piston column; 306. Cylinder; 307. Compression spring; 308. Support frame; 309. Synchronous shaft; 310. Rack and pinion; 311. First chamber; 312. Second chamber; 313. Through hole; 314. First gear; 315. Second gear. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0031] The serial numbers assigned to components in this document, such as "first," "second," etc., are merely used to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for 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. Therefore, they should not be construed as limitations on the invention.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0033] like Figures 1-8 As shown, this embodiment of the invention provides an anti-clogging aeration device suitable for wastewater treatment. Specifically, this embodiment of the invention provides an anti-clogging aeration device comprising:

[0034] Aerator 100 is located below the gas collection component 300. When aerator 100 generates gas, the gas can enter the gas collection component 300 during the upward floating process.

[0035] The air collection component 300 has a first working state and a second working state in the aeration tank.

[0036] When the air collection component 300 is in its first working state, it is positioned at a specified distance above the aerator 100 and is used to collect the gas generated by the aerator 100. During the collection process, water in the air collection component 300 is gradually discharged, forming an air chamber that can accommodate the aerator 100.

[0037] When the air collection component 300 is in the second working state, the air collection component 300 falls a specified distance to cover the air outlet of the aerator 100, and the air outlet of the aerator 100 will be separated from the aeration tank.

[0038] With the coordinated arrangement of the gas collection assembly 300 and the aerator 100, the first chamber 311 and the second chamber 312 can collect the gas generated by the aerator 100, thereby allowing the liquid in the gas collection assembly 300 to be discharged, forming an air chamber. By placing the aerator 100 in the air chamber, the aerator 100 is isolated from the sewage in the aeration tank. When the blower is turned off, the negative pressure generated by the aerator 100 is balanced through the gas exchange between the first chamber 311 and the second chamber 312, thereby preventing impurities in the sewage from clogging the aerator 100 due to backflow.

[0039] In one embodiment, such as Figures 1-4As shown, the air collection component 300 is located directly above the aerator 100. The aerator 100 generates bubbles during operation. The air collection component 300 is positioned directly above the aerator 100 to better collect the gas produced by the aerator 100. This gas continuously fills the second chamber 312 and discharges the wastewater from the second chamber 312 (similar to the air collection and drainage method), making the liquid level roughly flush with the bottom of the air collection component 300. Before turning off the blower after aeration is complete, the air collection component 300 is controlled to fall until it completely covers the aerator 100 (e.g., ...). Figure 8 As shown), at this time, the second chamber 312 contains gas, and the air outlet of the aerator 100 is contained in the second chamber 312. Before the air collection component 300 completely covers the aerator 100, the water in the second chamber 312 is discharged from the gap between the air collection component 300 and the aerator 100. Then the blower is turned off, and a negative pressure is generated in the aerator 100, which draws in the gas in the second chamber 312, thus preventing impurities in the sewage from clogging the aerator 100.

[0040] In one embodiment, the gas collecting assembly 300 includes a gas collecting bottle 301. The gas collecting bottle 301 has at least one first chamber 311 and at least one second chamber 312 inside. Both the first chamber 311 and the second chamber 312 are arranged along the direction of movement of the gas collecting bottle 301. A baffle 303 is provided between the first chamber 311 and the second chamber 312 to adjust their volumes. Figure 4 As shown, through the cooperative arrangement of the gas collecting bottle 301 and the aerator 100, the first chamber 311 and the second chamber 312 can collect the gas generated by the aerator 100, thereby allowing the sewage in the second chamber 312 to be discharged, forming an air chamber. When the gas collecting assembly 300 is in the second state, as shown... Figure 8 As shown, while the gas collecting bottle 301 descends, the aerator 100 continues to generate gas, which continuously enters the second chamber 312 until it completely surrounds the aerator 100. The aerator 100 is then isolated from the sewage in the aeration tank. When the blower is turned off, the negative pressure generated by the aerator 100 is balanced through gas exchange between the first chamber 311 and the second chamber 312, thereby preventing impurities in the sewage from clogging the aerator 100 due to backflow.

[0041] In one embodiment, the baffle 303 has a one-way valve 304 for the gas between the first chamber 311 and the second chamber 312.

[0042] There are at least two one-way valves 304. At least one one-way valve 304 is directed to the first chamber 311 and at least one one-way valve 304 is directed to the second chamber 312. When the pressure in the first chamber 311 is greater than that in the second chamber 312, the gas in the first chamber 311 enters the second chamber 312 through one of the one-way valves 304. When the pressure in the first chamber 311 is less than that in the second chamber 312, the gas in the second chamber 312 enters the first chamber 311 through one of the one-way valves 304. At this time, the gas injected from the second chamber 312 into the first chamber 311 can also clean the air outlet of the aerator 100 by blowing air.

[0043] In one embodiment, the gas collection assembly 300 further includes a transmission module located in the gas collection bottle 301. The transmission module is used to adjust the pressure change rate of the first chamber 311 and the second chamber 312, thereby creating a pressure difference between the first chamber 311 and the second chamber 312. When the gas collection assembly 300 covers the aerator 100, the aerator 100 continues to generate gas. The pressure change rate in the first chamber 311 is greater than the pressure change rate in the second chamber 312 through the transmission module, thereby creating a pressure difference between the first chamber 311 and the second chamber 312. The pressure difference can play a role in blowing and cleaning the aerator 100, and at the same time, the pressure difference can also restore the volume of the first chamber 311 and the second chamber 312.

[0044] In one embodiment, such as Figures 6-7 As shown, the transmission module includes a piston rod 305, a synchronous shaft 309, and a rack rod 310. The synchronous shaft 309 has a first gear 314 and a second gear 315 at both ends. The piston rod 305 has teeth that can mesh with the second gear 315. The piston rod 305 meshes with the second gear 315, and the rack rod 310 meshes with the first gear 314. The rack rod 310 is mounted on a baffle 303. A piston cylinder 306 is provided on the inner top wall of the gas collecting bottle 301. A compression spring 307 is provided inside the piston cylinder 306. One end of the piston rod 305 is slidably mounted in the piston cylinder 306, and the other end of the piston rod 305 extends through the baffle 303 into the second chamber 312. A support frame 308 is also provided on the inner top wall of the gas collecting bottle 301. The synchronous shaft 309 is rotatably mounted on the support frame 308. A through hole 313 is opened on the inner bottom wall of the gas collecting bottle 301, and the through hole 313 communicates with the piston cylinder 306.

[0045] Specifically, the diameter of the first gear 314 is smaller than the diameter of the second gear 315 to facilitate the adjustment of the gas change rate in the first chamber 311 and the second chamber 312. When the gas collecting bottle 301 falls onto the aerator 100, the aerator 100 is located in the second chamber 312. The aerator 100 continues to work and generate gas, increasing the pressure in the second chamber 312. This pushes the piston rod 305 to compress the spring 307, which slides in the piston cylinder 306. The piston rod 305 drives the synchronous shaft 309 to rotate. 9. This drives the rack rod 310 to move, and the rack rod 310 drives the baffle 303 to move upward. Through the cooperation of the first gear 314 and the second gear 315 with different diameters at both ends of the synchronous shaft 309, the piston rod 305 moves a small distance, and the baffle 303 moves a large distance, so that the pressure in the second chamber 312 is greater than the pressure in the first chamber 311. Then, the gas in the second chamber 312 is sprayed from the one-way valve 304 to the aerator 100 to blow air and clean the aerator 100.

[0046] Specifically, after the blower is turned off, the aerator 100 generates negative pressure, drawing back the gas in the first chamber 311 to restore the positive pressure in the aerator 100. The pressure in the first chamber 311 decreases, and the piston rod 305 moves downward under the action of the compression spring 307 and the water pressure in the aeration tank. At the same time, it drives the baffle 303 to move downward through the synchronous shaft 309. The volume of the second chamber 312 increases, and the pressure decreases. The gas in the first chamber 311 enters the first chamber 311 through the one-way valve 304, completing the reset.

[0047] In one embodiment, the anti-clogging aeration device further includes a lifting component 200, which is used to change the position of the air collecting component 300 relative to the aerator 100 so that it can achieve two working states.

[0048] In one embodiment, such as Figure 2 and Figure 5 As shown, the lifting assembly 200 includes a lifting column 201 and a telescopic rod 202. The lifting column 201 is used to define the positions of the aerator 100 and the air collection assembly 300. The lifting column 201 is located on both sides of the aerator 100. The side of the lifting column 201 that is close to each other has a groove. The air collection bottle 301 is provided with a slider 302. The slider 302 is slidably installed in the groove. The telescopic rod 202 is used to push the air collection assembly 300 to move. The telescopic rod 202 is located in the lifting column 201 and one end is connected to the slider 302. The telescopic rod 202 can push the slider 302 to move the air collection bottle 301 closer to or away from the aerator 100.

[0049] In one embodiment, the aerator 100 includes an air distribution pipe 101, a housing 102, and an aeration membrane 104. The air distribution pipe 101 is installed at the bottom of the lifting assembly 200, the housing 102 is located above the air distribution pipe 101, and the aeration membrane 104 is located at the top of the housing 102 to generate a large number of small-diameter bubbles. The filter membrane 103 is located below the aeration membrane 104 to filter impurities in the air. The sealing ring 107 is used to contact the second chamber 312, thereby forming a sealed space in the second chamber 312.

[0050] Specifically, the aerator 100 also includes a cover ring 105, which fixes the aeration membrane 104 to the outer shell 102. A sealing ring 107 is located on the outer shell 102 and has a specified thickness. The diameter of the outer shell 102 is smaller than the diameter of the second chamber 312. The outer diameter of the sealing ring 107 is adapted to the diameter of the second chamber 312. When the second chamber 312 forms a sealed space, a storage channel 108 is formed between the outer shell 102 and the gas collecting bottle 301 to store excess water in the second chamber 312.

[0051] Specifically, a venting bolt 106 is provided between the aerator 100 and the air distribution pipe 101. The venting bolt 106 is used to fix and connect the aerator 100 and the air distribution pipe 101. The venting bolt 106 is provided with an air passage for gas transportation. The gas is transported from the external fan to the air distribution pipe 101, enters the aerator 100 through the air passage in the venting bolt 106, and is then filtered by the filter membrane 103 before being released from the aeration membrane 104 into the aeration tank.

[0052] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. An anti-clogging aeration device, characterized by, Includes aerators and air collection components; The aerator is located below the air collection assembly; The air collection component has a first working state and a second working state in the aeration tank; When the air collection component is in its first working state, the air collection component is located at a specified distance above the aerator; When the gas collection component is in the second working state, the gas collection component falls a specified distance to cover the air outlet of the aerator. The gas collection assembly has at least one first chamber and at least one second chamber inside. The first chamber and the second chamber are both arranged along the direction of movement of the gas collection assembly. A baffle is provided between the first chamber and the second chamber to adjust the volume of the first chamber and the second chamber. The baffle has a one-way valve for exchanging gas between the first chamber and the second chamber. There are at least two one-way valves, at least one of which has one-way passage pointing to the first chamber and at least one of which has one-way passage pointing to the second chamber. The gas collection assembly also includes a transmission module, which is used to adjust the rate of pressure change in the first chamber and the second chamber.

2. The anti-clogging aeration device according to claim 1, wherein The transmission module includes a piston rod, a synchronous shaft, and a rack rod. The synchronous shaft has a first gear and a second gear at both ends. The piston rod has teeth that can mesh with the second gear. The piston rod meshes with the second gear, and the rack rod meshes with the first gear. The rack rod is mounted on a baffle. One end of the piston rod passes through the baffle and extends into the second chamber, while the other end is located in the first chamber and communicates with the aeration tank.

3. The anti-clogging aeration device according to claim 1, wherein It also includes a lifting assembly, which is used to change the position of the air collection assembly relative to the aerator.

4. The anti-clogging aeration device according to claim 3, characterized in that, The lifting assembly includes a lifting column and a telescopic rod. The lifting column is used to define the position of the aerator and the air collection assembly, and the telescopic rod is used to move the air collection assembly. The telescopic rod is located in the lifting column.

5. The anti-clogging aeration device according to claim 1, characterized in that, The aerator includes an air distribution pipe, a shell, an aeration membrane, and a filter membrane. The air distribution pipe is installed at the bottom of the lifting assembly, the shell is located above the air distribution pipe, the aeration membrane is located at the top of the shell and is used to generate a large number of small-diameter bubbles, and the filter membrane is located below the aeration membrane and is used to filter out impurities in the gas.

6. The anti-clogging aeration device according to claim 5, characterized in that, The outer casing is equipped with a sealing ring, which is used to seal the aerator and the air collection component when the air collection component is in the second working state.

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