Double-layer liftable aeration belt for deep aeration tank

Abstract

The utility model relates to a double-layer liftable aeration belt for a deep aeration tank. Comprising an aeration main pipe, a three-way connector in threaded connection with the aeration main pipe, a micropore aeration belt in threaded connection with the left end of the three-way connector, a membrane aeration belt in threaded connection with the right end of the three-way connector and lifting devices connected with the two ends of the micropore aeration belt and the two ends of the membrane aeration belt respectively. Wherein the lifting device comprises a winch, a pulley device fixedly connected to the bottom of the three-way connector and a mooring rope, one end of the mooring rope is fixedly connected with the micropore aeration belt, the other end of the mooring rope sequentially penetrates through the pulley device and the winch and then is fixedly connected with the membrane aeration belt, and the ends, away from the three-way connector, of the micropore aeration belt and the membrane aeration belt are fixedly connected with filtering devices. The microporous aeration belt and the membrane aeration belt can alternately move up and down and simultaneously filter, so that more uniform oxygen distribution can be realized; meanwhile, suspended solids and impurities in water are effectively removed, and the stability and reliability of the water quality treatment effect are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, in particular to a double-layer liftable aeration belt for a deep aeration tank. Background Art

[0002] Wastewater treatment is a crucial area for environmental protection and resource utilization. Deep aeration tanks, as a key component of wastewater treatment systems, have a direct impact on the efficiency and quality of wastewater treatment. In wastewater treatment systems, aeration devices are typically used to inject air into wastewater to provide oxygen for microbial degradation reactions, thereby purifying the water. However, existing aeration zones present several practical challenges. For example, patent publication number CN216336880U discloses a liftable alternating stirring and oxygenating aeration system. Specifically, this system utilizes a microporous aeration device and a perforated aeration device, each with a dedicated aeration fan and air supply pipeline. The air supply pipelines are equipped with valves to adjust the air volume, achieving independent regulation. However, this aeration system suffers from insufficient water flow in the deep aeration tanks, resulting in uneven oxygen transfer. This can lead to dead zones in some deep areas, resulting in localized oxygen deficiency and compromising the stability and reliability of the water treatment. Furthermore, suspended matter and impurities in the water can clog the aeration system, impacting the stability and efficiency of the water treatment. Utility Model Content

[0003] (1) Technical problems solved

[0004] In view of the limitations of the existing aeration belt system, the purpose of the present invention is to provide a double-layer liftable aeration belt for deep aeration tanks. By realizing the alternating up and down movement of the microporous aeration belt and the membrane aeration belt and performing filtration at the same time, dynamic oxygen distribution and uniform mixing of the water body can be achieved, thereby promoting uniform oxygen transfer and reducing dead zones and oxygen deficiency in some areas. At the same time, it can effectively remove suspended matter and impurities in the water, promote the crushing and dispersion of solid suspended matter, and improve the stability and reliability of the water quality treatment effect.

[0005] (2) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a double-layer liftable aeration belt for a deep aeration tank, comprising an aeration main pipe, a tee joint threadedly connected to the aeration main pipe, a microporous aeration belt threadedly connected to the left end of the tee joint, a diaphragm aeration belt threadedly connected to the right end of the tee joint, and a lifting device respectively connected to both ends of the microporous aeration belt and the diaphragm aeration belt; wherein the lifting device comprises a winch, a pulley device fixedly connected to the bottom of the tee joint, a cable with one end fixedly connected to the microporous aeration belt and the other end passing through the pulley device and the winch in sequence and then fixedly connected to the diaphragm aeration belt; the microporous aeration belt and the diaphragm aeration belt are both fixedly connected to the ends away from the tee joint with a filtering device.

[0007] Preferably, the microporous aeration belt comprises a first aeration hose, a microporous aeration head fixed to one end of the first aeration hose, and a first reinforcement belt mounted in conjunction with the cable. The first reinforcement belt wraps around the first aeration hose and has a hollow structure. The outer wall of the first reinforcement belt is provided with a plurality of first cable perforations. The microporous aeration belt is responsible for diffusing air or oxygen into the water through its micropores, thereby increasing the dissolved oxygen content in the water. It is made of corrosion-resistant and aging-resistant materials such as PVC, EPDM, or silicone. The aeration head is distributed with a large number of tiny pores (typically tens to hundreds of microns) that disperse the incoming compressed air into fine bubbles. These bubbles diffuse in the water, increasing the air-water contact area and duration, thereby effectively improving the oxygen transfer efficiency. The first reinforcement belt is typically made of a high-strength, wear-resistant material such as polyester fiber or other synthetic materials. This reinforcement belt wraps around the outside of the first aeration hose and has a hollow structure. This means that while the reinforcement belt wraps around the hose, its center is hollow, accommodating the hose and allowing free flow of gas. The multiple cable through holes provided on the outer wall of the first reinforcement belt are used for installing and matching cables.

[0008] Preferably, the diaphragm aeration belt includes a second aeration hose, a diaphragm aeration head fixed to one end of the second aeration hose, and a second reinforcement belt installed in conjunction with the cable. The second reinforcement belt is wrapped around the second aeration hose and has a hollow structure. The outer wall of the second reinforcement belt is provided with a plurality of second cable perforations. The second aeration hose is also made of a corrosion-resistant and flexible material, such as PVC or other synthetic materials, which has a certain degree of flexibility and strength and is suitable for long-term use in water. The diaphragm aeration head includes one or more thin film components, which are usually made using pore or micropore technology. These pores or micropores can evenly disperse the incoming compressed air into many small bubbles, thereby increasing the contact area between the bubbles and the water body and promoting the efficiency of oxygen transfer.

[0009] The filtration device includes a first filter ring that fits tightly with the outer walls of the microporous aeration belt and the membrane aeration belt, and a second filter basket covering the outside of the microporous aeration head and the membrane aeration head. The bottom end portion of the first filter ring extends into the second filter basket and is fixedly connected to the top inner wall of the second filter basket. The bottom inner wall of the second filter basket is fixedly connected with an adsorbent.

[0010] The inner wall of the second filter ring is tightly fitted to the outer walls of the microporous aeration head and the membrane aeration head.

[0011] The maximum diameter of the microporous aerator is larger than the outer diameter of the first reinforcement band, while the maximum diameter of the membrane aerator is larger than the outer diameter of the second reinforcement band. This means that the microporous aerator is slightly larger than the first reinforcement band. Specifically, when we refer to "maximum diameter," we refer to the widest part of the aerator, while "outer diameter" refers to the outermost dimension of the first reinforcement band. Similarly, the "maximum diameter" of the membrane aerator, or the widest part of the membrane aerator, is larger than the "outer diameter" of the second reinforcement band, or the outermost dimension of the second reinforcement band.

[0012] The pulley device comprises a first pulley fixed on the left side of the top of the aeration tank and a second pulley fixed on the right side of the top of the aeration tank. The first pulley and the second pulley are symmetrically arranged with the three-way joint as the symmetry axis.

[0013] One end of the cable passes through the first pulley and is connected to the through-hole of the first cable, and the other end passes through the second pulley and is connected to the through-hole of the second cable. The first pulley and the second pulley are firmly installed on the top of the deep aeration tank by bolts or welding. The left end of the cable on the winch passes through the first pulley and is connected to the microporous aeration belt, and the right end passes through the second pulley and is connected to the diaphragm aeration belt. When the winch rotates, it drives the cable to contract or extend, that is, it drives the microporous aeration belt to rise, and the diaphragm aeration belt to drop accordingly. When the microporous aeration belt drops, the diaphragm aeration belt rises accordingly. The two pulleys here are symmetrically arranged on the left and right sides of the tee joint, that is, the distance between the two pulleys and the tee joint is equal, so that the tension of the cable is evenly distributed, which helps to balance and stably operate the system.

[0014] It should be further explained that such a double-layer aeration belt is set on both the left and right sides of the deep aeration tank. That is to say, the double-layer aeration belt is designed on the left side of the deep aeration tank, and the double-layer aeration belt needs to be designed on the right side. When the position of the microporous aeration belt and the membrane aeration belt on the left side is adjusted by the winch, the position of the microporous aeration belt and the membrane aeration belt on the right side is opposite to that of the aeration belt on the left side.

[0015] Specifically, the deep aeration tank will distinguish between deep water areas and shallow water areas. Usually, the area with a water depth of 2-4 meters is defined as the shallow water area, and the area with a water depth of more than 5 meters is defined as the deep water area. When the microporous aeration belt of the double-layer aeration belt on the left is in the deep water area, the microporous aeration belt on the right will be raised to the shallow water area through the winch, that is, to ensure that there are microporous aeration belts and membrane aeration belts in both the deep water area and the shallow water area.

[0016] (3) Beneficial effects

[0017] (1) By realizing the alternating rising and falling movement of the microporous aeration belt and the membrane aeration belt, the positions of the microporous aeration belt and the membrane aeration belt in the aeration tank can be independently controlled, thereby realizing dynamic oxygen distribution, promoting the circulation and mixing of the water body, and effectively preventing dead zones and local areas of insufficient oxygen, thereby achieving more uniform oxygen distribution and improving the stability and reliability of the water treatment effect.

[0018] (2) By setting up a filtering device, the microporous aeration belt and the membrane aeration belt move alternately while driving the filtering device to move at the same time, which can effectively filter suspended matter and impurities in the water body, prevent congestion and blockage of the aeration belt, and promote the breakage and dispersion of solid suspended matter, thereby improving the stability and efficiency of water treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the overall schematic diagram of the utility model

[0020] Figure 2 Schematic diagram of the microporous aeration belt of the utility model

[0021] Figure 3 Schematic diagram of the membrane aeration belt in this utility model

[0022] Figure 4 This is a schematic diagram of the distribution of the deep aeration tank in this utility model

[0023] In the figure: 1 - aeration main pipe 2 - tee joint 3 - microporous aeration belt 31 - first aeration hose 32 - microporous aeration head 33 - first reinforcement belt 330 - first cable perforation 4 - diaphragm aeration belt 41 - second aeration hose 42 - diaphragm aeration head 43 - second reinforcement belt 430 - second cable perforation 5 - lifting device 51 - winch 52 - pulley device 520 - first pulley 521 - second pulley 54 - cable 6 - filtering device 61 - first filter ring 62 - second filter basket 63 - adsorbent. DETAILED DESCRIPTION

[0024] The following is a clear and complete description of the technical solutions in the embodiments of the present invention, in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without creative work are within the scope of protection of the present invention.

[0025] Example 1: Figure 1As shown, the first specific embodiment of the present invention provides a double-layer liftable aeration belt for a deep aeration tank, comprising an aeration main pipe 1, a tee joint 2 threadedly connected to the aeration main pipe 1, a microporous aeration belt 3 threadedly connected to the left end of the tee joint 2, a diaphragm aeration belt 4 threadedly connected to the right end of the tee joint 2, and a lifting device 5 respectively connected to both ends of the microporous aeration belt 3 and the diaphragm aeration belt 4; wherein, the lifting device 5 comprises a winch 51, a pulley device 52 fixedly connected to the bottom of the tee joint 2, a cable 54 having one end fixedly connected to the microporous aeration belt 3 and the other end fixedly connected to the diaphragm aeration belt 4 after passing through the pulley device 52 and the winch 51 once; the microporous aeration belt 3 and the diaphragm aeration belt 4 are fixedly connected to the ends away from the tee joint 2; the double-layer aeration structure allows the use of two different types of aeration belts in the same space, which helps to improve the oxygen transfer efficiency. The microporous aeration belt 3 releases gas into the water through its tiny pores, while the membrane aeration belt 4 pushes the gas into the water through a large membrane. The combination of these two maximizes the contact area between the gas and water, enhancing the aeration effect. Filter devices 6 are fixedly connected to both ends of the aeration belt to effectively prevent the micropores or membrane within the aeration belt from being clogged by dirt, ensuring normal gas release and stable water quality.

[0026] The microporous aeration belt 3 includes a first aeration hose 31, a microporous aeration head 32 fixed at one end of the first aeration hose 31, and a first reinforcement belt 33 installed in conjunction with the cable 54. The first reinforcement belt 33 is wrapped around the first aeration hose 31 and has a hollow structure. The outer wall of the first reinforcement belt 33 is provided with a plurality of first cable through holes 330.

[0027] The diaphragm aeration belt 4 comprises a second aeration hose 41, a diaphragm aeration head 42 secured to one end of the second aeration hose 41, and a second reinforcement belt 43 secured to a cable 54. The second reinforcement belt 43, wrapped around the second aeration hose 41, is a hollow structure. Several second cable perforations 430 are provided on the outer wall of the second reinforcement belt 43. This hollow structure, wrapped around the aeration hose, effectively enhances the structural stability and durability of the aeration belt, ensuring it maintains its shape and strength under external pressure or force, resisting deformation or damage. Furthermore, the cable, secured to the reinforcement belt through the perforations, effectively supports and suspends the entire microporous aeration belt system. Adjusting the cable position allows the depth and position of the aeration head to be controlled and adjusted to accommodate varying water depths and aeration requirements. Furthermore, the reinforcement belt design effectively prevents the aeration belt from floating or misaligning during operation. The cable's securement and support ensures the aeration belt remains in the correct position, ensuring aeration effectiveness and stable water quality treatment.

[0028] The filter device 6 includes a first filter ring 61 that fits tightly against the outer walls of the microporous aeration zone 3 and the membrane aeration zone 4, and a second filter basket 62 that covers the microporous aeration head 32 and the membrane aeration head 42. The bottom end of the first filter ring 61 extends into the second filter basket 62 and is fixedly connected to the top inner wall of the second filter basket 62. The bottom inner wall of the second filter basket 62 is fixedly connected to an adsorbent 63. The combination of the first filter ring 61 and the second filter basket 62 enables the filter device 6 to simultaneously perform gas aeration and water filtration. The microporous aeration zone 3 and the membrane aeration zone 4 release gas to provide oxygen and a stirring effect, promoting oxidation and mixing in the water. The adsorbent 63 in the second filter basket 62 effectively removes organic matter and impurities from the water, improving water purification.

[0029] The inner wall of the second filter ring 62 fits tightly against the outer walls of the microporous aeration head 32 and the membrane aeration head 42. This tight fit ensures that water flowing through the aeration heads fully contacts the adsorbent 63 within the second filter basket 62, thereby improving the utilization efficiency of the filter media and enhancing water purification. It also prevents water from bypassing the filter media and passing directly through the system, ensuring that all treated water is treated by the adsorbent, thus improving filtration effectiveness. Furthermore, the second filter ring 62 fits tightly against the outer walls of the two aeration heads, helping to evenly distribute the bubbles released by the microporous aeration strip 3 and the membrane aeration strip 4, allowing them to fully mix with the water, improving oxygen dissolution efficiency and enhancing water oxidation and agitation. Furthermore, by ensuring that bubbles first enter the filter basket area, they can fully contact pollutants during their ascent, promoting their oxidation, degradation, and sedimentation.

[0030] The maximum diameter of the microporous aeration head 32 is larger than the outer diameter of the first reinforcement band 33, and the maximum diameter of the diaphragm aeration head 42 is larger than the outer diameter of the second reinforcement band 43. Because the diameters of the microporous and diaphragm aeration heads are larger than the outer diameter of the reinforcement bands, they can fit tightly against the outside of the reinforcement bands, forming a more stable and sealed connection. This effectively reduces the risk of gas or liquid leakage at the connection and ensures the safety and reliability of the system during operation. In addition, the large design diameters of the microporous and diaphragm aeration heads mean that they can provide a larger aeration area, increasing the number and uniformity of bubble generation, thereby improving the efficiency of gas dissolution in water. Furthermore, a larger aeration head diameter can increase the amount and size range of bubbles generated, thereby more effectively providing oxygen and mixed substances to the water, promoting the oxidation and mixing of the water.

[0031] The pulley assembly 52 includes a first pulley 520 fixed to the left side of the top of the aeration tank, and a second pulley 521 fixed to the right side of the top of the aeration tank. The first pulley 520 and the second pulley 521 are symmetrically arranged with the tee joint 2 as the axis of symmetry. The first pulley 520 and the second pulley 521 are symmetrically arranged with the tee joint 2 as the axis of symmetry, providing a balanced support structure, ensuring that the various components at the top of the aeration tank are evenly stressed, and reducing instability caused by unilateral force. The configuration of the pulley assembly 52 also effectively guides the movement trajectory of the transmission belt or other device, ensuring that it does not deviate from the intended path during movement, thereby improving the stability and reliability of the system. In addition, the configuration of the pulley assembly 52 can effectively disperse the force applied to the pulley by the transmission belt or other device, reducing the impact of single-point friction on the equipment, extending the service life of the equipment, reducing friction and wear, and reducing energy loss.

[0032] One end of cable 54 passes through first pulley 520 and connects to first cable hole 330, while the other end passes through second pulley 521 and connects to second cable hole 430. Since one end of the cable is connected to the first cable hole via the first pulley, and the other end is connected to the second cable hole via the second pulley, this ensures that the system is evenly stressed during operation, avoiding imbalances caused by unilateral stress and improving overall system stability. Furthermore, the pulley system disperses stress on the cable, ensuring a more even stress on each section of the cable, thereby reducing the risk of local wear and tear and breakage.

[0033] Working principle: When in use, turn on the winch 51. When the winch 51 rotates clockwise, the cable connected to the microporous aeration belt 3 on the left side contracts, and then the microporous aeration belt 3 is lifted upward through the first pulley 520. At this time, the cable connected to the diaphragm aeration belt 4 on the right side of the winch is extended, and then the diaphragm aeration belt 4 is driven down through the second pulley 521. After the microporous aeration belt 3 is lifted to the shallow water area of the deep aeration tank and the diaphragm aeration belt 4 is lowered to the deep water area of the deep aeration tank, the winch 51 is turned off. Subsequently, the gas is released. After the gas enters the aeration main pipe 1, it is evenly distributed to the microporous aeration belt 3 and the diaphragm aeration belt 4 through the tee joint 2. The microporous aeration belt 3 passes through the microporous aeration head 32 releases the gas evenly through the micropores to form tiny bubbles, and the membrane aeration belt 4 pushes the gas into the water in the form of larger bubbles through the diaphragm on the membrane aeration head 42. At this time, the water flow in the deep aeration tank contacts the second filter basket 62 wrapped outside the microporous aeration head 32 and the membrane aeration head 42. The particles and impurities in the water will be blocked outside the second filter basket 62, and the water flow passing through the second filter basket 62 contacts the adsorbent 63, which further removes organic matter and other trace pollutants dissolved in the water. At the same time, the first filter ring 61 can prevent impurities and pollutants in the water from entering the aeration belt from above the aeration head, ensuring that no pollutants are introduced during the aeration process.

[0034] Here, it should be noted that, at this time, the microporous aeration zone 3 of the double-layer aeration zone device on the other side of the deep aeration tank is located in the deep water area, while the membrane aeration zone 4 is located in the shallow water area.

Claims

1. A double-layered liftable aeration belt for a deep aeration tank, characterized in that: The invention comprises an aeration main pipe (1), a three-way joint (2) threadedly connected to the aeration main pipe (1), a microporous aeration belt (3) threadedly connected to the left end of the three-way joint (2), a membrane aeration belt (4) threadedly connected to the right end of the three-way joint (2), and a lifting device (5) respectively connected to both ends of the microporous aeration belt (3) and the membrane aeration belt (4); wherein the lifting device (5) comprises a winch (51), a pulley device (52) fixedly connected to the bottom of the three-way joint (2), and a cable (54) having one end fixedly connected to the microporous aeration belt (3) and the other end passing through the pulley device (52) and the winch (51) in sequence and then fixedly connected to the membrane aeration belt (4); the ends of the microporous aeration belt (3) and the membrane aeration belt (4) away from the three-way joint (2) are both fixedly connected to a filtering device (6).

2. The aeration belt according to claim 1, characterized in that The microporous aeration belt (3) comprises a first aeration hose (31), a microporous aeration head (32) fixed to one end of the first aeration hose (31), and a first reinforcement belt (33) installed in conjunction with the cable (54); the first reinforcement belt (33) is wrapped around the outside of the first aeration hose (31), has a hollow structure, and a plurality of first cable through-holes (330) are provided on the outer wall.

3. The aeration belt according to claim 1, characterized in that The membrane aeration belt (4) comprises a second aeration hose (41), a membrane aeration head (42) fixed to one end of the second aeration hose (41), and a second reinforcement belt (43) installed in conjunction with the cable (54); the second reinforcement belt (43) is wrapped around the outside of the second aeration hose (41), has a hollow structure, and a plurality of second cable through-holes (430) are provided on the outer wall.

4. The aeration belt according to claim 2, characterized in that: The filtering device (6) comprises a first filter ring (61) tightly fitted with the outer wall of the microporous aeration belt (3) and a second filter basket (62) covering the outside of the microporous aeration head (32); the bottom end of the first filter ring (61) extends into the second filter basket (62) and is fixedly connected to the top inner wall of the second filter basket (62); the bottom inner wall of the second filter basket (62) is fixedly connected with an adsorbent (63).

5. The aeration belt according to claim 3, characterized in that: The filtering device (6) comprises a first filter ring (61) tightly fitted with the outer wall of the membrane aeration belt (4) and a second filter basket (62) covering the outside of the membrane aeration head (42); the bottom end of the first filter ring (61) extends into the second filter basket (62) and is fixedly connected to the top inner wall of the second filter basket (62); the bottom inner wall of the second filter basket (62) is fixedly connected with an adsorbent (63).

6. The aeration belt according to claim 2, characterized in that: The maximum diameter of the microporous aeration head (32) is greater than the outer diameter of the first reinforcement belt (33).

7. The aeration belt according to claim 3, characterized in that The maximum diameter of the membrane aeration head (42) is greater than the outer diameter of the second reinforcement belt (43).

8. The aeration belt according to claim 1, characterized in that The pulley device (52) comprises a first pulley (520) fixed on the left side of the top of the aeration tank and a second pulley (521) fixed on the right side of the top of the aeration tank; the first pulley (520) and the second pulley (521) are symmetrically arranged with the three-way joint (2) as the symmetry axis; one end of the cable (54) passes through the first pulley (520) and is connected to the first cable through-hole (330) of the microporous aeration belt (3), and the other end passes through the second pulley (521) and is connected to the second cable through-hole (430) of the membrane aeration belt (4).

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