A jet aeration stirring device

Abstract

The utility model discloses a kind of jet flow aeration stirring devices, it is related to jet flow aeration technical field, including high-pressure water tank, the top of high-pressure water tank is fixedly connected with high-pressure gas tank by the connecting plate of annular array distribution.The utility model is through being provided with high-pressure gas tank, air from intake pipe is actively inhaled from the rotation of air inlet turbine, it is convenient to the internal pressure increase of high-pressure gas tank, so that the air pressure inside air outlet pipe is greater than external atmospheric pressure, further improve the oxygen intake of mixing bin inside, to reach the purpose of improving oxygen solubility, by the mixing bin is inclined downward, it can reduce the included angle between air outlet pipe and mixing bin, compared with vertical setting, air inside air outlet pipe can reduce the resistance of entering mixing bin, further improve oxygen intake, by setting cutting rod, it can use the rotation of cutting rod to mix and stir sewage air inside diffusion pipe, further cutting air, further increase the solubility of oxygen.

Description

Technical Field

[0001] This utility model relates to the field of jet aeration technology, specifically a jet aeration stirring device. Background Technology

[0002] Aeration is a technique that dissolves oxygen in water, facilitating the activity and reproduction of aerobic organisms. Aerators are key equipment in the aerobic stage of wastewater treatment, primarily used for treating polluted water using biological treatment processes, and sometimes also in landscape water features and aquaculture. Commonly used aeration devices can be mainly divided into aeration discs, aeration pipes, vortex aerators, jet aerators, and surface aerators. Among these, jet aeration is a common aeration and oxygenation method. Compared to other aeration methods, jet aeration, due to its structural characteristics, is less prone to clogging, has a long service life, requires less maintenance, and also possesses a strong water mixing function.

[0003] A jet aerator disclosed in Chinese utility model patent application CN203513375U, although it utilizes multiple jet holes on a cluster orifice plate and multiple small-diameter air manifolds to introduce air and increase dissolved oxygen efficiency, the air drawn in by this utility model is naturally drawn in by the negative pressure formed by the high-speed flow of liquid fluid. The oxygen intake is too low and cannot increase the dissolved oxygen. Furthermore, this utility model cannot perform agitation at the aeration position, resulting in a relatively low oxygen dissolution rate.

[0004] Therefore, it is necessary to propose a jet aeration and stirring device to solve the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a jet aeration and stirring device that solves the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: it includes a high-pressure water tank, a centrifugal pump is installed inside the high-pressure water tank, a waterproof motor for driving the centrifugal pump is fixedly connected to the bottom of the high-pressure water tank, a mixing chamber is fixedly connected to the circumference of the high-pressure water tank, a bundled tube communicating with the high-pressure water tank is fixedly connected inside the mixing chamber, and a diffuser is fixedly connected to the end of the mixing chamber away from the high-pressure water tank.

[0007] The top of the high-pressure water tank is fixedly connected to a high-pressure air tank via connecting plates arranged in a ring array. The side wall of the high-pressure air tank is connected to the mixing chamber via an air outlet pipe. An air intake turbine is installed in the middle of the top wall of the high-pressure air tank via a bearing. The output shaft of the waterproof motor is fixedly connected to a shaft that drives the air intake turbine.

[0008] Optionally, the centrifugal pump is fixedly connected to the top of an inlet pipe, which penetrates the top wall of the high-pressure water tank, and the centrifugal pump is provided with an outlet on the side that communicates with the high-pressure water tank.

[0009] Optionally, an air inlet pipe is fixedly connected to the top of the high-pressure gas box, and an air inlet flare is fixedly connected to the top of the air inlet pipe.

[0010] Optionally, a bearing bracket is fixedly connected to the inner wall of the diffuser tube, and a drive shaft is mounted on the middle of the bearing bracket via a bearing. A drive fan blade is fixedly connected to one end of the drive shaft near the mixing chamber, and a cutting rod is fixedly connected to the other end of the drive shaft.

[0011] Optionally, the cutting rod has an acute-angled rhombus cross-section, and the cutting rods are divided into multiple groups that are equally spaced on the drive shaft. Each group of cutting rods is arranged in a circular array, and the length of the cutting rods closer to the bearing frame is greater than the length of the cutting rods farther away from the bearing frame.

[0012] Optionally, the mixing chamber is inclined downwards, and the air outlet pipe is inclined downwards and connected to the mixing chamber.

[0013] This utility model provides a jet aeration and stirring device, which has the following beneficial effects:

[0014] 1. This jet aeration and mixing device, by setting up a high-pressure air box, can actively draw in external air from the air inlet pipe through the rotation of the air inlet turbine, which facilitates the internal pressurization of the high-pressure air box, so that the air pressure inside the air outlet pipe is greater than the external atmospheric pressure, thereby further increasing the oxygen intake inside the mixing chamber and thus achieving the purpose of increasing the dissolved oxygen.

[0015] 2. This jet aeration and mixing device, by tilting the mixing chamber downwards, can reduce the angle between the air outlet pipe and the mixing chamber. Compared with vertical installation, it can reduce the resistance of air entering the mixing chamber from the air outlet pipe and further increase the oxygen intake.

[0016] 3. This jet aeration and mixing device, by setting a cutting rod, can use the rotation of the cutting rod to mix and stir the sewage and air inside the diffuser tube, and at the same time, it can further cut the air to further increase the oxygen solubility. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention viewed from below.

[0018] Figure 2 This is a front-view three-dimensional structural schematic diagram of the present utility model.

[0019] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the high-pressure water tank of this utility model.

[0020] Figure 4This is a schematic diagram of the front cross-sectional structure of this utility model.

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the drive fan blade of this utility model.

[0022] In the diagram: 1. Waterproof motor; 2. High-pressure water tank; 3. Mixing chamber; 5. Diffuser; 6. Connecting plate; 7. High-pressure air box; 8. Air outlet pipe; 9. Air inlet pipe; 10. Air inlet flare; 11. Water inlet pipe; 12. Centrifugal pump; 13. Rotary shaft; 14. Constriction pipe; 15. Air inlet turbine; 16. Bearing bracket; 17. Drive shaft; 18. Drive fan blade; 19. Cutting rod. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Please see Figures 1 to 5 This utility model provides a technical solution: a jet aeration and stirring device, including a high-pressure water tank 2, a centrifugal pump 12 is installed inside the high-pressure water tank 2, a waterproof motor 1 for driving the centrifugal pump 12 is fixedly connected to the bottom of the high-pressure water tank 2, a mixing chamber 3 is fixedly connected to the circumference of the high-pressure water tank 2, a bundled tube 14 communicating with the high-pressure water tank 2 is fixedly connected inside the mixing chamber 3, and a diffuser tube 5 is fixedly connected to the end of the mixing chamber 3 away from the high-pressure water tank 2;

[0025] The top of the high-pressure water tank 2 is fixedly connected to the high-pressure air tank 7 via connecting plates 6 arranged in a ring array. The side wall of the high-pressure air tank 7 is connected to the mixing chamber 3 via an air outlet pipe 8. An air intake turbine 15 is installed in the middle of the top wall of the high-pressure air tank 7 via a bearing. The output shaft of the waterproof motor 1 is fixedly connected to the rotating shaft 13 that drives the air intake turbine 15.

[0026] The centrifugal pump 12 is fixedly connected to the top of the water inlet pipe 11, which penetrates the top wall of the high-pressure water tank 2. The centrifugal pump 12 is provided with an outlet on the side that communicates with the high-pressure water tank 2.

[0027] In this embodiment, the centrifugal pump 12 is driven by the waterproof motor 1. The inlet pipe 11 at the top of the centrifugal pump 12 pumps sewage in and then pressurizes it before delivering it to the inside of the high-pressure water tank 2. At the same time, the rotating shaft 13 also drives the air intake turbine 15 to draw external air into the inside of the high-pressure air box 7, thus pressurizing the air inside the high-pressure air box 7.

[0028] After passing through the high-speed liquid flow ejected from the nozzle 14, the negative pressure created draws in the air inside the outlet pipe 8, mixing the air and sewage in the diffuser pipe 5.

[0029] In the prior art, the jet aeration device draws in external air by creating negative pressure through the high-speed liquid fluid ejected from the nozzle 14. The air pressure is very low, and the pressure of the liquid-gas mixture formed inside the diffuser 5 is between the pressure of the high-speed liquid and the air pressure.

[0030] By pressurizing the air inside the high-pressure gas box 7, the pressure of the gas-liquid mixture inside the diffuser 5 can be effectively increased, allowing more oxygen to dissolve in the wastewater and increasing the dissolved oxygen efficiency.

[0031] Specifically, an air inlet pipe 9 is fixedly connected to the top of the high-pressure air box 7, and an air inlet flare 10 is fixedly connected to the top of the air inlet pipe 9.

[0032] In this embodiment, the intake turbine 15 can draw air from inside the intake pipe 9 into the high-pressure air box 7, and the intake vent 10 can facilitate the intake of external air to pressurize the air inside the high-pressure air box 7.

[0033] Specifically, a bearing bracket 16 is fixedly connected to the inner wall of the diffuser tube 5, and a drive shaft 17 is mounted on the middle of the bearing bracket 16 via a bearing. A drive fan blade 18 is fixedly connected to one end of the drive shaft 17 near the mixing chamber 3, and a cutting rod 19 is fixedly connected to the other end of the drive shaft 17.

[0034] Specifically, the cutting rod 19 has an acute-angled rhombus cross section. The cutting rod 19 is divided into multiple groups and is distributed at equal intervals on the drive shaft 17. Each group of cutting rods 19 is arranged in a ring array. The length of the cutting rod 19 closer to the bearing bracket 16 is greater than the length of the cutting rod 19 farther away from the bearing bracket 16.

[0035] In this embodiment, the fluid inside the diffuser 5 drives the fan blade 18 to rotate, which in turn causes the cutting rod 19 to rotate inside the diffuser 5, thereby cutting the fluid and dispersing the air to further increase the dissolved oxygen efficiency.

[0036] Specifically, the mixing chamber 3 is tilted downwards, and the air outlet pipe 8 is tilted downwards and connected to the mixing chamber 3.

[0037] In this embodiment, by tilting the mixing chamber 3 downward, the perpendicular angle between the outlet pipe 8 and the mixing chamber 3 can be avoided, making it easier for the air inside the outlet pipe 8 to enter the mixing chamber 3 and the diffuser pipe 5 in the direction of flow. Compared with the vertical setting, the resistance of the air inside the outlet pipe 8 entering the mixing chamber 3 can be reduced, and the oxygen intake can be further increased.

[0038] Summary of working principle:

[0039] In practical use, the waterproof motor 1 at the bottom of the high-pressure water tank 2 is started. This motor simultaneously drives the centrifugal pump 12 and the air intake turbine 15, eliminating the need for multiple additional drive devices, effectively simplifying the device structure and reducing energy consumption. On one hand, the waterproof motor 1 drives the centrifugal pump 12, which draws in external sewage through the top inlet pipe 11. After pressurization, the sewage is delivered to the high-pressure water tank 2 through the side outlet for storage, providing a high-pressure water flow for subsequent gas-liquid mixing. On the other hand, the output shaft of the waterproof motor 1 drives the air intake turbine 15 on the top wall of the high-pressure air tank 7 to rotate through the rotating shaft 13. The air intake turbine 15 generates suction, drawing external air into the high-pressure air tank 7 through the air intake pipe 9 and the air intake vent 10, thereby pressurizing the air inside the tank. This process changes the traditional method of relying solely on negative pressure suction, actively pressurizing the air to make the air pressure inside the high-pressure air tank 7 higher than the external atmospheric pressure, laying the foundation for increasing the oxygen intake.

[0040] High-pressure wastewater in high-pressure water tank 2 is ejected at high speed through the constricted pipe 14 inside mixing chamber 3, forming a high-speed liquid flow. Simultaneously, pressurized air in high-pressure air tank 7 is delivered to mixing chamber 3 via a downwardly inclined air outlet pipe 8. Because mixing chamber 3 is inclined downwards, the angle between the air outlet pipe 8 and mixing chamber 3 is reduced, significantly lowering the resistance to air entering mixing chamber 3 compared to a vertical arrangement, further increasing oxygen intake. The high-speed liquid flow creates negative pressure, accelerating the intake of high-pressure air from the air outlet pipe 8, ensuring thorough mixing of the air and high-pressure wastewater.

[0041] Compared with traditional jet aeration, the pressurized air is mixed with high-pressure water flow, which effectively increases the pressure of the gas-liquid mixture in the diffuser tube 5, making oxygen easier to dissolve in wastewater and significantly improving dissolved oxygen efficiency. This solves the problems of low self-priming air pressure and insufficient dissolved oxygen in traditional devices.

[0042] After the gas-liquid mixture initially mixed in the mixing chamber 3 enters the diffuser 5, it impacts the drive fan blades 18, causing the drive shaft 17 to rotate under the support of the bearing bracket 16, which in turn drives the cutting rod 19 at the other end to rotate. The cutting rod has an acute-angled rhomboid cross-section and is distributed in multiple equally spaced ring arrays. The cutting rods closer to the bearing bracket 16 are longer than those at the far end. This special structure not only efficiently stirs the gas-liquid mixture, making the wastewater and air mix more evenly, but also further cuts the incompletely dissolved air bubbles, making the bubbles smaller, increasing the contact area between the air and wastewater, and further improving the oxygen dissolution rate.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A jet aeration and stirring device, comprising a high-pressure water tank, characterized in that: The high-pressure water tank is equipped with a centrifugal pump inside. A waterproof motor that drives the centrifugal pump is fixedly connected to the bottom of the high-pressure water tank. A mixing chamber is fixedly connected to the circumference of the high-pressure water tank. A bundled pipe communicating with the high-pressure water tank is fixedly connected inside the mixing chamber. A diffuser is fixedly connected to the end of the mixing chamber away from the high-pressure water tank. The top of the high-pressure water tank is fixedly connected to a high-pressure air tank via connecting plates arranged in a ring array. The side wall of the high-pressure air tank is connected to the mixing chamber via an air outlet pipe. An air intake turbine is installed in the middle of the top wall of the high-pressure air tank via a bearing. The output shaft of the waterproof motor is fixedly connected to a shaft that drives the air intake turbine.

2. The jet aeration and stirring device according to claim 1, characterized in that: The centrifugal pump is fixedly connected to the top of an inlet pipe that penetrates the top wall of the high-pressure water tank. The centrifugal pump has an outlet on its side that communicates with the high-pressure water tank.

3. The jet aeration and stirring device according to claim 1, characterized in that: An air inlet pipe is fixedly connected to the top of the high-pressure gas box, and an air inlet flare is fixedly connected to the top of the air inlet pipe.

4. The jet aeration and stirring device according to claim 1, characterized in that: A bearing bracket is fixedly connected to the inner wall of the diffuser tube. A drive shaft is mounted on the middle of the bearing bracket via a bearing. A drive fan blade is fixedly connected to one end of the drive shaft near the mixing chamber, and a cutting rod is fixedly connected to the other end of the drive shaft.

5. The jet aeration and stirring device according to claim 4, characterized in that: The cutting rod has an acute-angled rhombus cross-section and is divided into multiple groups that are equally spaced on the drive shaft. Each group of cutting rods is arranged in a circular array, and the length of the cutting rods closer to the bearing frame is greater than the length of the cutting rods farther away from the bearing frame.

6. The jet aeration and stirring device according to claim 1, characterized in that: The mixing chamber is inclined downwards, and the air outlet pipe is inclined downwards and connected to the mixing chamber.

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