An aerobic tank hydraulic stirring device
By using a hydraulic mixing device to mix water and air in the aerobic tank, the problems of high energy consumption and wear of existing mechanical mixers are solved, achieving low-cost, high-efficiency mixing and oxygen dissolution, and extending the equipment's lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- POWERCHINA HUBEI ENG CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-02
AI Technical Summary
Existing aerobic tank agitators have high energy consumption, significant wear and tear, high maintenance costs, and also suffer from dead zones in the mixing process.
A hydraulic mixing device is used to guide sewage into the mixer through the main outlet pipe and the branch outlet pipe. The air mixed in the mixer forms tiny bubbles, which work together with the water flow to achieve mixing and oxygenation, avoiding the high energy consumption and wear of mechanical mixers.
It reduces operating energy consumption and maintenance costs, extends equipment lifespan, ensures mixing effect and water circulation, and improves oxygen dissolution efficiency and microbial reaction rate.
Smart Images
Figure CN224313338U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water treatment technology, and more specifically, to an aerobic tank hydraulic stirring device. Background Technology
[0002] The aerobic tank is a crucial component of the wastewater treatment process. Its core function is to ensure sufficient dissolved oxygen in the tank through aeration and other means, providing conditions for the reproduction of aerobic microorganisms. This allows them to decompose organic matter in the water into inorganic matter, remove COD and BOD, and initiate nitrification, thereby reducing pollutant concentrations. To ensure water circulation within the tank, eliminate stagnant areas, prevent activated sludge sedimentation, and improve oxygen dissolution efficiency and the rates of oxidation and nitrification reactions, a stirrer is required.
[0003] Currently, the commonly used types of agitators are long-shaft vertical agitators and submersible mechanical agitators, which have problems such as high energy consumption, significant wear, high requirements for sealing and lubrication systems, and high operating and maintenance costs.
[0004] To ensure effective mixing while reducing operating energy consumption and costs, and extending the service life of the mixing device, a new type of aerobic tank hydraulic mixing device is needed. Utility Model Content
[0005] This invention provides a hydraulic stirring device for aerobic tanks to solve the problems of short service life and high operating costs of existing aerobic tank stirring equipment.
[0006] According to one aspect of this utility model, a hydraulic stirring device for an aerobic tank is provided. The stirring device is installed on both sides of the short side of the aerobic tank, and a partition wall is provided in the middle of the aerobic tank. The stirring device includes a main outlet pipe and multiple branch outlet pipes connected to the main outlet pipe. Multiple mounting holes are provided on the short side wall of the aerobic tank. The branch outlet pipes pass through the mounting holes and extend into the aerobic tank. A mixer is connected to the end of the branch outlet pipe. The mixer includes an inlet pipe, a mixing body, and a conical diffuser. One side of the inlet pipe is connected to the branch outlet pipe, and the other end of the inlet pipe extends into the mixing body. The diffuser is installed in the mixing body and is arranged opposite to the inlet pipe. An air outlet is provided at the top of the mixing body. An oxygen supply main pipe is connected to the bottom of the mixing body through an oxygen supply branch pipe. A water pump is connected to the main outlet pipe, and a variable frequency fan is connected to the oxygen supply main pipe.
[0007] Based on the above scheme, the preferred embodiment is that the water outlet branch pipe is installed in the mounting hole through a water-stop sleeve.
[0008] Based on the above scheme, preferably, the mounting holes are evenly arranged on the walls of the aerobic tank and symmetrically arranged around the partition walls.
[0009] Based on the above scheme, a preferred embodiment is that the wall of the aerobic tank is also equipped with an inlet pipe through a water-stop sleeve, and the output end of the inlet pipe is connected to an elbow, with the output end of the elbow facing the bottom of the aerobic tank.
[0010] Based on the above scheme, preferably, the outlet end of the access pipe extending into the mixture is provided with a nozzle.
[0011] Based on the above scheme, preferably, the air outlet is multiple and evenly arranged on the top of the mixture.
[0012] Based on the above scheme, the preferred embodiment is a hollow sphere.
[0013] This utility model discloses an aerobic pool hydraulic stirring device that can achieve the mixing of water and air, and the stirring of water in the pool. Excess air can enter the water through the mixer and several conical air outlets on the top of the mixer to achieve the function of water oxygenation.
[0014] Compared with the prior art, the present invention has the following advantages:
[0015] The mechanical mixing was replaced with hydraulic mixing, which reduced equipment wear and eliminated mixing dead zones; the main equipment was arranged outside the pool and did not come into contact with the sewage, reducing corrosion and extending service life; and the operation and maintenance costs were reduced to the greatest extent possible while ensuring the mixing effect. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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. In the drawings:
[0017] Figure 1 This is a schematic diagram of the structure of the aerobic tank hydraulic stirring device of this utility model;
[0018] Figure 2 For the present utility model Figure 1 AA section view;
[0019] Figure 3 For the present utility model Figure 1 BB section view;
[0020] Figure 4 This is a structural diagram of the mixer of this utility model;
[0021] Explanation of icon numbers:
[0022] 1. Water pump; 21. Inlet pipe; 22. Elbow; 31. Outlet pipe; 32. Three-way valve; 33. Outlet main pipe; 34. Outlet branch pipe; 4. Mixer; 41. Connecting pipe; 42. Nozzle; 44. Mixture; 45. Diffuser; 46. Air outlet; 5. Water-stop sleeve; 6. Variable frequency fan; 71. Check valve; 72. Oxygen supply main pipe; 73. Oxygen supply branch pipe; 8. Aerobic tank; 81. Partition wall. Detailed Implementation
[0023] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit the scope of this utility model.
[0024] It should be understood that, when used in this specification and the appended claims, the term "comprising" indicates the presence of a descriptive feature, integral, step, operation, element, and / or component, but does not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or sets.
[0025] To keep the drawings concise, only the parts relevant to this invention are shown schematically in each figure, and they do not represent the actual structure of the product. Furthermore, for ease of understanding, in some figures, only one of the components with the same structure or function is schematically depicted, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one."
[0026] It should also be further understood that the term “and / or” as used in this application specification and the appended claims means any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.
[0027] In the embodiments shown in the accompanying drawings, the directional indications (such as up, down, left, right, front, and back) used to explain the structure and movement of the various components of this invention are relative rather than absolute. These descriptions are appropriate when these components are in the positions shown in the drawings. If the descriptions of the positions of these components change, these directional indications also change accordingly.
[0028] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0029] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.
[0030] Please see Figure 1 and combined Figure 2 and Figure 3 As shown, the present invention provides a hydraulic stirring device for an aerobic tank 8, which is installed on both sides of the short side of the aerobic tank 8. A partition wall 81 is provided in the middle of the aerobic tank 8, which divides the aerobic tank 8 into an upper part and a lower part. The upper part and the lower part are connected by the gap between the partition wall 81 and the aerobic tank 8, which is used to separate the tank body and guide the water flow path.
[0031] The stirring device of this utility model includes an inlet pipe 21, an outlet main pipe 33 and outlet branch pipes 34. The outlet main pipe 33 is connected to multiple outlet branch pipes 34, and the outlet main pipe 33 is connected to an outlet pipe 31 through a three-way valve 32. A water pump 1 is installed on the outlet pipe 31, preferably a variable frequency circulating pump.
[0032] Specifically, this utility model has multiple mounting holes on the short side wall of the aerobic tank 8, and they are symmetrically arranged with the central partition wall 81 as the axis of symmetry to ensure that the water flow of the stirring devices on both sides is evenly distributed and to avoid the formation of dead water areas in the tank; the water outlet branch pipe 34 passes through the water stop sleeve 5 and is installed in the mounting hole, and the water outlet branch pipe 34 extends into the aerobic tank 8, and its end is connected to the mixer 4.
[0033] In this invention, an inlet pipe 21 is installed on the wall of the aerobic tank 8, near the partition wall 81, via a water-stop sleeve 5. The output end of the inlet pipe 21 is connected to an elbow 22, with the output end of the elbow 22 facing the bottom of the aerobic tank 8. Wastewater is injected into the bottom of the tank through the inlet pipe 21 and the elbow 22, which can work synergistically with the water flow generated by the stirring device to further promote water circulation.
[0034] Please continue reading. Figure 4 As shown, a mixer 4 is connected to the end of the outlet branch pipe 34. The mixer 4 includes an inlet pipe 41, a mixing body 44, and a cone-shaped diffuser 45. One side of the inlet pipe 41 is connected to the outlet branch pipe 34, and the other end of the inlet pipe 41 extends into the mixing body 44. The diffuser 45 is installed in the mixing body 44 and is positioned opposite to the inlet pipe 41. An air outlet 46 is provided at the top of the mixing body 44. An oxygen supply main pipe 72 is connected to the bottom of the mixing body 44 through an oxygen supply branch pipe 73. A water pump 1 is connected to the outlet main pipe 33, and a variable frequency fan 6 is connected to the oxygen supply main pipe 72 through a check valve 71.
[0035] During operation, wastewater is introduced into the aerobic tank 8 through the inlet pipe 21. A variable frequency blower 6 delivers air into the oxygenation main pipe 72, which then enters the mixing body 44 via the oxygenation branch pipe 73. There, the air mixes thoroughly with the high-speed water flow within the spherical mixing body 44, forming a mixture of fine bubbles and water. This mixture is then evenly released into the water body through the top air outlet 46. This process not only oxygenates the water body but also enhances the stirring effect through the kinetic energy of the gas-liquid mixture, thereby improving oxygen dissolution efficiency and microbial reaction rate.
[0036] The hydraulic mixing device in this embodiment achieves mixing and oxygenation through the synergistic effect of water flow and air, eliminating the need for a mechanical agitator. This avoids the high energy consumption and high wear problems associated with long-shaft vertical or submersible agitators, and reduces the maintenance costs of the sealing and lubrication systems. Simultaneously, the variable frequency fan 6 can adjust the air supply based on real-time dissolved oxygen data, further optimizing energy consumption; the symmetrically arranged mixing devices ensure uniform water flow within the tank, improving wastewater treatment efficiency.
[0037] Based on the above embodiments, the diameter and number of air outlets 46 can be adjusted according to the tank volume. For example, in a large aerobic tank 8, the number of air outlets 46 can be increased to 12 or more, evenly distributed on the top of the mixture 44 to improve oxygenation efficiency. Furthermore, the nozzle 42 can adopt a tapered structure to further increase the water flow velocity, enhance turbulence, and optimize mixing uniformity. Finally, the method of this application is only a preferred embodiment and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A hydraulic stirring device for an aerobic tank, wherein the stirring device is installed on both sides of the short side of the aerobic tank, and a partition wall is provided in the middle of the aerobic tank, characterized in that, The stirring device includes a main outlet pipe and multiple branch outlet pipes connected to the main outlet pipe. Multiple mounting holes are provided on the short side wall of the aerobic tank. The branch outlet pipes pass through the mounting holes and extend into the aerobic tank. A mixer is connected to the end of the branch outlet pipe. The mixer includes an inlet pipe, a mixing body, and a conical diffuser. One side of the inlet pipe is connected to the branch outlet pipe, and the other end of the inlet pipe extends into the mixing body. The diffuser is installed in the mixing body and is positioned opposite to the inlet pipe. An air outlet is provided at the top of the mixing body. An oxygen supply main pipe is connected to the bottom of the mixing body through an oxygen supply branch pipe. A water pump is connected to the main outlet pipe, and a variable frequency fan is connected to the oxygen supply main pipe.
2. The aerobic tank hydraulic stirring device as described in claim 1, characterized in that, The outlet branch pipe is installed in the mounting hole through a water-stop sleeve.
3. The aerobic tank hydraulic stirring device as described in claim 1, characterized in that, The mounting holes are evenly distributed on the walls of the aerobic tank and are symmetrically arranged around the partition walls.
4. The aerobic tank hydraulic stirring device as described in claim 3, characterized in that, The wall of the aerobic tank is also equipped with an inlet pipe through a water-stop sleeve. The output end of the inlet pipe is connected to an elbow, and the output end of the elbow faces the bottom of the aerobic tank.
5. The aerobic tank hydraulic stirring device as described in claim 1, characterized in that, The access pipe extends to the output end of the mixture and is equipped with a nozzle.
6. The aerobic tank hydraulic stirring device as described in claim 1, characterized in that, The air outlets are multiple and evenly distributed on the top of the mixture.
7. The aerobic tank hydraulic stirring device as described in claim 1, characterized in that, The mixture is in the form of a hollow sphere.