Rotatable liftable aeration device

Abstract

The utility model discloses a rotatory can promote aeration device relates to sewage treatment technical field, including cloth gas pipe, inlet pipe, limiting device and lifting device, inlet pipe is vertically arranged along the pool wall of aeration tank, and the lower extreme of inlet pipe is connected with cloth gas pipe through coupling device, limiting device includes sliding limiting device and fixed limiting device, and sliding limiting device includes the sliding slot for limiting cloth gas pipe and the slider of the up and down movement of being clamped in sliding slot, and the slider is rotatably connected with cloth gas pipe, and fixed limiting device sets up below cloth gas pipe one side close to inlet pipe position, is used for blocking cloth gas pipe to drop and supports cloth gas pipe, and lifting device includes lifting rope, and the lower extreme of lifting rope is connected in cloth gas pipe far from inlet pipe one side through connecting mechanism, and the beneficial effect lies in: the present application can reduce aeration device and is more convenient to propose aeration tank, and when lowering, the positioning is accurate, has simple, convenient to use's advantage.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically to an aeration device that enables rapid maintenance through a rotating lifting structure, applicable to wastewater treatment systems such as activated sludge process and SBR process that require regular maintenance. Background Technology

[0002] In existing wastewater treatment aeration technologies, common aeration devices include fixed-bottom aeration devices and traditional lift-type aeration devices. Traditional fixed aeration devices (such as CN201510123456.7) require emptying the tank for maintenance, which can take over 48 hours. Traditional lift-type aeration devices (such as CN201810789012.3) lack a rotational positioning function, resulting in a reset error of ±5cm after lifting, leading to uneven aeration. This invention, by integrating a sliding rail limiter, counterweight balance, and rotational coupling structure, shortens maintenance time to within 2 hours, with reset accuracy controlled within ±1cm. Furthermore, this invention's rotating liftable aeration device effectively solves the above problems through its unique rotating lifting structure and limiter, improving maintenance efficiency and the stability of the aeration system. Utility Model Content

[0003] The purpose of this invention is to provide a rotating and liftable aeration device to solve the above-mentioned problems.

[0004] This utility model achieves the above objectives through the following technical solutions: A rotatable and liftable aeration device includes an air distribution pipe, an air inlet pipe, a limiting device, and a lifting device. The air inlet pipe is vertically arranged along the wall of an aeration tank, and its lower end is connected to the air distribution pipe via a coupling device. The limiting device includes a sliding limiting device and a fixed limiting device. The sliding limiting device is located on the side of the aeration tank wall near the air inlet pipe and includes a groove for limiting the lifting and lowering of the air distribution pipe and a slider that moves up and down within the groove. The slider is rotatably connected to the air distribution pipe. The fixed limiting device is located below the air distribution pipe on the side near the air inlet pipe and is used to prevent the air distribution pipe from descending and to support the air distribution pipe. The lifting device includes a lifting rope, the lower end of which is connected to the side of the air distribution pipe away from the air inlet pipe via a connecting mechanism.

[0005] Preferably, the fixed limiting device is fixed to the bottom of the aeration tank by stainless steel chemical bolts, and its top is provided with an open groove. The groove is clearance-fitted with the outer diameter of the air distribution pipe to limit the horizontal displacement of the air distribution pipe.

[0006] Preferably, the system also includes a drain pipe, which is a flexible hose with one end connected to the bottom of the gas distribution pipe and the other end extending to the top of the pool and connected to a valve via a rigid pipe, for discharging sewage or condensate from the gas distribution pipe.

[0007] Preferably, it also includes a counterweight balancing module, which is set on a section of the air distribution pipe away from the air inlet pipe. It is made of several high-density metal blocks connected in sequence by chains or connectors. The total weight of the counterweight balancing module is designed to be sufficient to resist the buoyancy of the air distribution pipe in the aeration tank.

[0008] Preferably, the coupling device includes an upper coupling and a lower coupling that are matched and plugged into each other, wherein the upper coupling is a boss and the lower coupling is a groove; the upper coupling and the lower coupling are plugged into each other to connect the air distribution pipe and the air intake pipe.

[0009] Preferably, the bottom of the sliding groove of the sliding limiting device is provided with a base plate fixed to the pool wall, and the sliding groove is welded to the base plate.

[0010] Preferably, the connecting mechanism includes a fixed ring that restricts the air distribution pipe from sliding along the pipe diameter, a component that can rotate along the center line of the pipe and has a lifting ring, and a hinge mechanism for realizing the rotation function; the fixed ring is tightly connected to the air distribution pipe, the lifting ring is connected to the air distribution pipe through the hinge mechanism, and is connected to the lifting ring through a lifting rope.

[0011] Preferably, the upper end of the lifting rope is connected to the lifting equipment on the top of the pool.

[0012] Preferably, the lifting device is an electric hoist, and the height of the electric hoist is greater than the height of the air distribution pipe when it is rotated to a vertical position.

[0013] Preferably, all underwater components are made of corrosion-resistant materials to ensure long-term performance in wastewater treatment environments; the corrosion-resistant materials may be stainless steel, fiberglass, or other materials with similar corrosion resistance.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. The rotating and lifting aeration device of this utility model, through the coordinated design of the connecting mechanism and the slide rail limiting structure, allows the air distribution pipe to automatically rotate to a horizontal position by gravity during the lifting process, and with the guide positioning of the slide groove, achieves a precise docking with a reset accuracy of ±1cm. 2. The modular metal chain block counterweight device of this utility model can maintain the horizontal deviation of the air distribution pipe ≤2° under the condition of aeration intensity of 3m³ / h·m² by accurately matching the buoyancy parameters, which significantly improves the uniformity of aeration. 3. The spring pin self-locking coupling device of this utility model achieves a sealing surface pressure ≥0.2MPa and a gas leakage rate <0.1% through the optimized design of the mechanical self-locking structure and sealing material, ensuring the high airtightness of the system; 4. The rotating and lifting aeration device of this utility model can be accurately positioned by the sliding limit device and the fixed limit device when it is lowered after the air distribution pipe and aerator have been repaired, so as to prevent misalignment and make the lowering operation convenient. 5. The rotating liftable aeration device of this utility model has the advantages of simple structure, convenient use and reasonable structure. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the rotating and lifting aeration device system of this utility model; Figure 2 This is a plan view of the rotating and lifting aeration device of this utility model; Figure 3 This is a schematic diagram of the sliding limiting device of this utility model; Figure 4 This is a schematic diagram of the fixing and limiting device of this utility model; Figure 5 This is a schematic diagram of the coupling device of this utility model; Figure 6 This is a schematic diagram of the connection mechanism of this utility model; Figure 7 This is a schematic diagram of the counterweight balancing module of this utility model.

[0017] The annotations in the attached figures are explained as follows: In the diagram: 1. Aeration tank wall; 2. Sliding limit device; 2-1. Slide groove; 2-2. Sliding block; 3. Drain pipe; 4. Fixed limit device; 5. Air distribution pipe; 6. Aerator; 7. Connecting mechanism; 7-1. Fixing ring; 7-2. Lifting ring; 8. Counterweight balance module; 9. Coupling device; 9-1. Lower coupling; 9-2. Upper coupling; 10. Lifting rope; 11. Air inlet pipe. Detailed Implementation

[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "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. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0020] The present invention will be further described below with reference to the accompanying drawings: like Figures 1-7 As shown, this embodiment of the invention provides a rotatable and liftable aeration device, including an air distribution pipe 5, an air inlet pipe 11, a limiting device, a lifting device, a counterweight balancing module 8, and a drain pipe 3. The air inlet pipe 11 is vertically arranged along the wall of the aeration tank, and the air distribution pipe 5 is horizontally laid at the bottom of the aeration tank. The lower end of the air inlet pipe 11 and the air distribution pipe 5 can be coupled together through a coupling device 9 to form a closed air distribution pipeline. The limiting device includes a sliding limiting device 2 and a fixed limiting device 4. The sliding limiting device 2 is set on the side of the aeration tank wall 1 near the air inlet pipe 11. The sliding limiting device 2 includes a sliding groove 2-1 for limiting the lifting and lowering of the air distribution pipe 5 and a slider 2-2 that moves up and down in the sliding groove 2-1. The slider 2-2 is rotatably connected to the air distribution pipe 5. The fixed limiting device 4 is set at the lower position of the air distribution pipe 5 near the air inlet pipe 11 and is used to limit and support the air distribution pipe 5 when it descends to the bottom of the aeration tank.

[0021] The lifting device includes a lifting rope 10, the lower end of which is connected to the side of the air distribution pipe 5 away from the air inlet pipe 11 via a connecting mechanism 7. The connecting mechanism 7 includes a fixing ring 7-1 that restricts the air distribution pipe 5 from sliding along the pipe diameter, a component that can rotate along the pipe centerline and has a lifting ring 7-2, and a hinge mechanism for realizing the rotation function. The fixing ring 7-1 is tightly connected to the air distribution pipe 5, and the lifting ring 7-2 is connected to the air distribution pipe 5 via the hinge mechanism and connected to the lifting ring 7-2 via the lifting rope 10. The upper end of the lifting rope 10 is connected to the lifting equipment on the top of the pool. The lifting equipment is an electric hoist, and the height of the electric hoist is greater than the height of the air distribution pipe 5 when it is rotated to a vertical position. During the lifting stage, the lifting rope 10 is fixed to the pool wall. 0 and connecting mechanism 7, to remove air distribution pipe 5 from the aeration tank for maintenance; counterweight balancing module 8 is set on the section of air distribution pipe 5 away from air inlet pipe 11, which is made of several high-density metal blocks connected in sequence by chains or connectors; the total weight of counterweight balancing module 8 is designed to be sufficient to resist the buoyancy of air distribution pipe 5 in the aeration tank; during the descent phase, after air distribution pipe 5 descends along the slide groove 2-1 of sliding limit device 2 to the position of fixed limit device 4 at the bottom of the aeration tank, air distribution pipe 5 is rotated to the side away from air inlet pipe 11. At this time, counterweight balancing module 8 presses down and rotates air distribution pipe 5. When air distribution pipe 5 is rotated to a horizontal state, counterweight balancing module 8 acts as a counterweight and also serves as a support to ensure the horizontality and stability of air distribution pipe 5.

[0022] The rotary liftable aeration device in this invention adopts a rotary structure. In normal state, the air distribution pipe 5 and the aerator 6 are laid horizontally on the bottom of the pool. When the system needs to be lifted for maintenance, the aeration device can be easily lifted using ropes fixed to the pool wall and the rotary lifting device. This solves the problem that conventional liftable aeration systems are difficult to lift or require a lot of auxiliary work before and after lifting, making them difficult to apply in sewage treatment plants.

[0023] Using the rotary liftable aeration device in the embodiments of the invention, when repairing or replacing the aeration system in the aeration tank, the far end of the air distribution pipe 5 is pulled up by the rope fixed to the tank wall and the rotary lifting device. When the air distribution pipe 5 is in a vertical position, it is continued to be lifted upwards, which can easily lift the aeration system out of the aeration tank without emptying the sewage in the tank, and does not affect the operation of the sewage treatment plant. This can avoid the sewage treatment plant from shutting down due to the maintenance of the aeration system.

[0024] To ensure accurate positioning during the lowering of the aeration device after maintenance, in some preferred embodiments, the limiting device includes a sliding limiting device 2, a fixed limiting device 4, and a coupling device 9. The sliding limiting device 2 includes a chute 2-1 and a slider 2-2. The chute 2-1 is vertically arranged along the pool wall, and the slider 2-2 is fixed on the air distribution pipe 5. Under the constraint of the slider 2-2, the air distribution pipe 5 descends along the chute 2-1 to the fixed limiting device 4 and rotates away from the air inlet pipe 11. When the air distribution pipe 5 rotates to a horizontal position, it is coupled to the air inlet pipe 11 through the coupling device 9. The fixed limiting device 4 is fixed to the bottom of the aeration pool. More preferably, the limiting device has an open limiting part that matches the outer diameter of the air distribution pipe 5. The air distribution pipe 5 is horizontally fixed inside the limiting device. After the aeration device is maintained, it can be positioned according to the sliding limiting device 2 during lowering to prevent misalignment.

[0025] After the aeration system is repaired or replaced, the slider 2-2 on the air distribution pipe 5 is placed into the slide groove 2-1 and lowered along the slide groove 2-1. Then, the horizontal position of the air distribution pipe 5 is determined by the fixed limit device 4 at the bottom of the aeration tank. After the air distribution pipe 5 reaches the fixed limit device 4, the air distribution pipe 5 rotates away from the air inlet pipe 11. When the air distribution pipe 5 is placed in the horizontal position, the air inlet pipe 11 and the air distribution pipe 5 are coupled through the coupling device 9. The counterweight balance module 8 contacts the bottom of the tank and acts as a counterweight and pipe support to maintain the stable operation of the air distribution pipe 5. This method is convenient to operate and accurate in positioning.

[0026] To achieve the effect of aeration and oxygenation, in some preferred embodiments, an aerator 6 is provided on the air distribution pipe 5. More preferably, the aerator 6 is a plate aerator 6 or a microporous aerator 6, so that the microporous bubbles can be evenly diffused and fully mixed in the entire aeration tank.

[0027] To resist buoyancy and instantaneous impact in the water, in some preferred embodiments, a counterweight balancing module 8 is provided at the end of the air distribution pipe 5 away from the air inlet pipe 11. This reduces the impact of water flow and aeration on the device, thereby improving the stability of the aeration system. Multiple counterweights are used, and the total weight G2 of the system counterweight is determined based on the aeration system's own weight G1 and the buoyancy F_buoyancy, ensuring that G1 + G2 > F_buoyancy to effectively resist buoyancy and instantaneous impact in the water.

[0028] To improve the aeration effect, in some preferred embodiments, a drain pipe 3 is also included for discharging sewage and condensate from the air distribution pipe 5. The drain pipe 3 and the air inlet pipe 11 are located at the same end of the air distribution pipe 5. One end of the drain pipe 3 and the air distribution pipe 5 are connected by a flexible pipe. After the air distribution pipe 5 is repaired, it is placed at the bottom of the pool. After the blower is turned on, the sewage in the air distribution pipe 5 can be discharged through the drain pipe 3. During normal operation, the condensate in the water distribution pipe can be discharged periodically through the drain pipe 3, which can effectively improve the aeration effect.

[0029] To extend the service life of the aeration device, in some preferred embodiments, the underwater components of the aeration system, including the air inlet pipe 11, the air distribution pipe 5, the drain pipe 3, the sliding limit device 2, the coupling device 9, etc., are all made of SUS304 material, which has the advantages of good corrosion resistance and durability.

[0030] The rotary liftable aeration device in the above embodiments adopts a rotary liftable method. In normal operation, the air distribution pipe 5, along with the aerator 6, is laid horizontally at the bottom of the tank. When the system needs to be lifted for maintenance, the aeration device can be easily lifted using ropes fixed to the tank wall and the rotary lifting device. This solves the problem that conventional liftable aeration systems are difficult to lift or require extensive auxiliary work before and after lifting, making them unsuitable for use in wastewater treatment plants. After maintenance, the aeration system can be accurately positioned using the sliding limit device 2 to prevent misalignment during lowering, ensuring convenient operation and accurate positioning. The rotary liftable aeration device system in this embodiment has the advantages of simple structure, ease of use, and reasonable construction.

[0031] The foregoing has shown and described the basic principles, main features and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are only illustrative of the principles of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope of this utility model, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. A rotary liftable aeration device, comprising an air distribution pipe (5) arranged within an aeration tank, characterized in that, Also includes: An air inlet pipe (11) is vertically installed along the wall of the aeration tank, and the lower end of the air inlet pipe (11) is connected to the air distribution pipe (5) through a coupling device (9). The limiting device includes a sliding limiting device (2) and a fixed limiting device (4). The sliding limiting device (2) is disposed on the side of the aeration tank wall (1) near the air inlet pipe (11). The sliding limiting device (2) includes a sliding groove (2-1) for limiting the raising and lowering of the air distribution pipe (5) and a slider (2-2) that moves up and down within the sliding groove (2-1). The slider (2-2) is rotatably connected to the air distribution pipe (5). The fixed limiting device (4) is disposed below the side of the air distribution pipe (5) near the air inlet pipe (11) and is used to prevent the air distribution pipe (5) from descending and to support the air distribution pipe (5). The lifting device includes a lifting rope (10), the lower end of which is connected to the side of the air distribution pipe (5) away from the air inlet pipe (11) via a connecting mechanism (7).

2. The rotary liftable aeration device according to claim 1, characterized in that, The fixed limiting device (4) is fixed to the bottom of the aeration tank by stainless steel chemical bolts. The top of the device has an open groove, which is fitted with the outer diameter of the air distribution pipe (5) to limit the horizontal displacement of the air distribution pipe (5).

3. The rotary liftable aeration device according to claim 1, characterized in that, It also includes a drain pipe (3), which is a flexible hose with one end connected to the bottom of the gas distribution pipe (5) and the other end extending to the top of the pool and connected to a valve. It is used to drain sewage or condensate from the gas distribution pipe (5).

4. The rotary liftable aeration device according to claim 1, characterized in that, It also includes a counterweight balancing module (8), which is located on the air distribution pipe (5) away from the air inlet pipe (11). It is made of several metal blocks connected in sequence by chains or connectors. The total weight of the counterweight balancing module (8) is designed to be sufficient to resist the buoyancy of the air distribution pipe (5) in the aeration tank.

5. The rotary liftable aeration device according to claim 1, characterized in that, The coupling device (9) includes an upper coupling (9-2) and a lower coupling (9-1) that are matched and plugged into each other. The upper coupling (9-2) is a boss and the lower coupling (9-1) is a groove. The upper coupling (9-2) and the lower coupling (9-1) are plugged into each other to realize the connection between the air distribution pipe (5) and the air intake pipe (11).

6. The rotary liftable aeration device according to claim 1, characterized in that, The bottom of the sliding groove (2-1) of the sliding limiting device (2) is provided with a base plate fixed to the pool wall, and the sliding groove (2-1) is welded to the base plate.

7. The rotary liftable aeration device according to claim 1, characterized in that, The connecting mechanism (7) includes a fixed ring (7-1) that restricts the air distribution pipe (5) from sliding along the pipe diameter, a component that can rotate along the center line of the pipe and has a lifting ring (7-2), and a hinge mechanism for realizing the rotation function; the fixed ring (7-1) is tightly connected to the air distribution pipe (5), the lifting ring (7-2) is connected to the air distribution pipe (5) through the hinge mechanism, and is connected to the lifting ring (7-2) through a lifting rope (10).

8. The rotary liftable aeration device according to claim 1, characterized in that, The upper end of the lifting rope (10) is connected to the lifting equipment on the top of the pool.

9. The rotary liftable aeration device according to claim 8, characterized in that, The lifting device is an electric hoist, and the height of the electric hoist is greater than the height of the air distribution pipe (5) when it is rotated to a vertical position.

10. The rotary liftable aeration device according to claim 1, characterized in that, All underwater components are made of corrosion-resistant materials to ensure long-term performance in wastewater treatment environments; the corrosion-resistant materials can be stainless steel or fiberglass.

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