A micro-nano bubble dissolved oxygen generator

Abstract

This utility model discloses a micro / nano bubble dissolved oxygen generator, relating to the field of dissolved oxygen generator technology. The utility model includes: a gas-liquid mixing tube, with an inlet pipe and a diffuser pipe connected to its two ends respectively. A conduit with sealed ends is coaxially arranged inside the inlet pipe. An air inlet pipe connected to the conduit is provided on the gas-liquid mixing tube. Several vent holes are arrayed on the outer surface of the conduit. A spiral plate is fixed between the outer wall of the conduit and the inner wall of the gas-liquid mixing tube. This utility model, by setting the conduit and spiral plate inside the gas-liquid mixing tube, allows the water to flow spirally, forming a low-pressure vortex core at the central axis and a high-pressure zone away from the central axis. Oxygen is transported to the conduit through the air inlet pipe and then diffused circumferentially into the water through the vent holes. This not only makes the vent holes less prone to clogging, but also, the rotating water flow generates strong shear force, tearing large bubbles into micron-sized bubbles, thereby improving practicality.

Description

Technical Field

[0001] This utility model relates to the field of dissolved oxygen generator technology, specifically to a micro-nano bubble dissolved oxygen generator. Background Technology

[0002] High-efficiency dissolved oxygen technology is of vital importance in pollution treatment, ecological water environment restoration, and aquaculture. Among various oxygenation methods, from biological oxygenation to impeller-driven physical oxygenation, the most widely accepted technology direction is microbubble oxygenation, especially ultra-micro nanobubble oxygenation technology, which has a very broad prospect. The key to high-efficiency oxygenation technology is that the smaller the bubbles, the higher the oxygenation efficiency.

[0003] Existing micro-nano bubble dissolved oxygen generators mainly use a Roots blower to force air into an air delivery pipe, which is then sent into a microporous tube and finally into a water pipe. This allows the microbubbles to mix with the water and disperse into the water, achieving uniform oxygenation of the water. However, since the water flow in the water pipe has a certain water pressure, this method makes the airflow easily affected by the water pressure, hindering its smooth passage through the micropores and causing them to become easily clogged. Furthermore, the mixing effect between the microbubbles and the water is poor. Therefore, this invention proposes a micro-nano bubble dissolved oxygen generator. Utility Model Content

[0004] The purpose of this invention is to provide a micro / nano bubble dissolved oxygen generator in order to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] A micro / nano bubble dissolved oxygen generator, comprising:

[0007] A gas-liquid mixing tube has an inlet pipe and a diffuser pipe connected to its two ends respectively. A conduit with both ends sealed is coaxially arranged inside the inlet pipe. An air inlet pipe connected to the conduit is provided on the gas-liquid mixing tube. Several air vents are arrayed on the outer surface of the conduit. A spiral plate is fixed between the outer wall of the conduit and the inner wall of the gas-liquid mixing tube.

[0008] Furthermore, a shaft is coaxially inserted inside the conduit, and several spiral blades are arranged in a ring on the outer surface of the shaft inside the conduit. An impeller head is fixed at one end of the shaft near the inlet pipe.

[0009] Furthermore, the liquid inlet pipe includes a straight section and a conical section connected together, with the smaller opening end of the conical section connected to the gas-liquid mixing pipe.

[0010] Furthermore, the inner wall of the cone section is provided with several spiral guide grooves distributed in an annular pattern.

[0011] Furthermore, a mounting block is fixed at one end of the shaft near the diffuser tube, and a plurality of stirring blades are arranged in a ring on the outer surface of the mounting block.

[0012] Furthermore, the stirring blade includes a mounting frame fixed on the mounting block, and a metal mesh is fixed inside the mounting frame.

[0013] Furthermore, the inner wall of the gas-liquid mixing tube is provided with a number of ultrasonic transducers, which are arranged in a spiral.

[0014] Furthermore, the diffuser tube has a conical structure, and the end with the smaller opening is connected to the gas-liquid mixing tube.

[0015] The beneficial effects of this utility model are as follows: In this utility model, a conduit and a spiral plate are set inside the gas-liquid mixing pipe, so that the water flows in a spiral. A low-pressure vortex core is formed at the central axis, and a high-pressure zone is formed away from the central axis. Oxygen is transported to the conduit through the air inlet pipe, and then diffused into the water in a circumferential manner through the vent holes. This not only makes the vent holes less prone to clogging, but also generates strong shear force due to the rotation of the water flow, which tears large bubbles into micron-sized bubbles, thereby improving practicality. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural cross-sectional view of the present invention;

[0018] Figure 3 This is an exploded view of part of the three-dimensional structure of this utility model;

[0019] Figure 4 This is a utility model Figure 2 Enlarged view of point A in the middle;

[0020] Figure 5 This is a utility model Figure 3 Enlarged view of section B in the middle.

[0021] Reference numerals: 1. Gas-liquid mixing pipe; 2. Liquid inlet pipe; 3. Diffuser pipe; 4. Guide pipe; 5. Air inlet pipe; 6. Vent hole; 7. Spiral plate; 8. Shaft; 9. Spiral blade; 10. Impeller head; 11. Spiral guide groove; 12. Mounting block; 13. Stirring blade; 14. Ultrasonic transducer; 201. Straight section; 202. Conical section; 1301. Mounting frame; 1302. Metal mesh. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0023] like Figures 1-5 As shown, an embodiment of this utility model discloses a micro / nano bubble dissolved oxygen generator, comprising:

[0024] A gas-liquid mixing pipe 1 has an inlet pipe 2 and a diffuser pipe 3 connected to its two ends, respectively. Preferably, the inlet pipe 2 is connected to an external water pump, which pressurizes the water and delivers it into the gas-liquid mixing pipe 1 through the inlet pipe 2. A conduit 4 with sealed ends is coaxially arranged inside the inlet pipe 2. An air inlet pipe 5 connected to the conduit 4 is provided on the gas-liquid mixing pipe 1. Several vent holes 6 are arrayed on the outer surface of the conduit 4. Preferably, the air inlet pipe 5 is connected to an external air pump, which delivers oxygen into the conduit 4 through the air inlet pipe 5. The oxygen then diffuses in a ring shape into the inlet pipe 2 through the vent holes 6. The oxygen and water mix in the gas-liquid mixing pipe 1 and are then discharged through the diffuser pipe 3. The outer wall of the conduit 4 is connected to the inlet pipe 2. A spiral plate 7 is fixed between the inner walls of the gas-liquid mixing pipe 1. By setting the spiral plate 7, when water flows in the gas-liquid mixing pipe 1, it is used to guide the flow of water, so that the water flows in a spiral at high speed in the gas-liquid mixing pipe 1. Through the spiral flow, a low-pressure vortex core is formed at the central axis, and a high-pressure zone is formed away from the central axis. The central low pressure formed by the spiral makes it easy for oxygen to enter the water through the vent 6. This allows the bubbles to enter the water in a small form for mixing, and it is not easy for the vent 6 to be blocked. At the same time, the spiral plate 7 forces the water flow to rotate, generating strong shear force, tearing large bubbles into micron-sized bubbles. The micron-sized bubbles mix with the water and are then discharged from the diffuser pipe 3.

[0025] In this design, a conduit 4 and a spiral plate 7 are installed inside the gas-liquid mixing pipe 1, allowing the water to flow in a spiral pattern. A low-pressure vortex core is formed at the central axis, while a high-pressure zone is formed away from the central axis. Oxygen is delivered to the conduit 4 through the air inlet pipe 5 and then diffused into the water in a circumferential manner through the vent 6. This not only makes the vent 6 less prone to clogging, but also generates strong shearing force due to the water flow rotation, tearing large bubbles into micron-sized bubbles, thereby improving practicality.

[0026] like Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, a further technical solution for oxygen diffusion of this utility model is disclosed. A shaft 8 is coaxially inserted inside the conduit 4. Several spiral blades 9 are arranged in a ring on the outer surface of the shaft 8 inside the conduit 4. An impeller head 10 is fixed at one end of the shaft 8 near the liquid inlet pipe 2. Preferably, the impeller head 10 includes a blade head fixed on the shaft 8. Several blades are arranged in a ring on the blade head. The blades have a certain inclination. When water flows from the liquid inlet pipe 2 into the gas-liquid mixing pipe 1, the water flow will impact the impeller head 10, thereby driving the shaft 8 to rotate. The greater the water flow velocity, the faster the shaft 8 rotates. When the shaft 8 rotates, it will drive several spiral blades 9 to rotate around the shaft 8 as the center, thereby applying a disturbance thrust or centrifugal diffusion force to the airflow in the conduit 4. The rotation of the spiral blades 9 generates centrifugal force to throw the gas toward the pipe wall, enhance the airflow escape, and make the airflow pass through the vent 6 more smoothly to mix with the water flow, further improving the anti-clogging performance of the vent 6.

[0027] like Figure 2 As shown, the present invention discloses a further technical solution for the liquid inlet pipe 2. The liquid inlet pipe 2 includes a straight cylindrical section 201 and a conical section 202 that are connected. The end of the conical section 202 with a smaller opening is connected to the gas-liquid mixing pipe 1. By constructing the liquid inlet pipe 2 as a straight cylindrical section 201 and a conical section 202 that are connected, when water is transported from the straight cylindrical section 201 to the conical section 202, the water flow can be pressurized due to the smaller inner diameter. This allows the pressurized water flow to better impact the impeller head 10 when it flows into the gas-liquid mixing pipe 1, making the high-speed rotation of the shaft 8 more stable.

[0028] like Figure 2 As shown, the present invention discloses a further technical solution for the liquid inlet pipe 2. The inner wall of the cone section 202 is provided with a number of spiral guide grooves 11 arranged in a ring. By opening the spiral guide grooves 11 on the inner wall of the cone section 202, the water flow can be guided, so that the water flow is spiral when it flows in the cone section 202. This not only makes better use of the water flow to impact the impeller head 10, but also guides the water flow in advance, so that the water flow is smoother when it is guided by the spiral plate 7.

[0029] like Figure 5 As shown, a further technical solution for bubble micronization of this utility model is disclosed. A mounting block 12 is fixed at one end of the shaft 8 near the diffuser tube 3. Several stirring blades 13 are arranged in a ring on the outer surface of the mounting block 12. When the shaft 8 rotates, it drives the mounting block 12 and the stirring blades 13 to rotate synchronously. When the water flow and the bubbles flow along the gas-liquid mixing tube 1, the stirring blades 13 stir the water flow and can apply a shear force to the water flow, further improving the bubble micronization effect.

[0030] like Figure 5As shown, the specific structure of the stirring plate 13 of this utility model is disclosed. The stirring plate 13 includes a mounting frame 1301 fixed on the mounting block 12. A metal mesh 1302 is fixed inside the mounting frame 1301. The stirring plate 13 is composed of the mounting frame 1301 and the metal mesh 1302. This not only reduces the resistance when the stirring plate 13 is stirring, but also allows the metal mesh 1302 to more effectively break up large air bubbles, thereby improving the micronization effect of the air bubbles. Preferably, the metal mesh 1302 is made of steel wire and has been treated with rust prevention.

[0031] like Figure 2 and Figure 4 As shown, a further technical solution for bubble micronization of this utility model is disclosed. The inner wall of the gas-liquid mixing tube 1 is provided with a number of ultrasonic transducers 14, which are arranged in a spiral. Since the spiral plate 7 forms a spiral channel for the gas-liquid mixing tube 1, the number of ultrasonic transducers 14 are arranged along the spiral channel. By setting the ultrasonic transducers 14, ultrasonic waves are generated. The ultrasonic waves instantly cause cavitation of the gas-liquid mixture, which causes a large number of microbubbles and small bubbles to resonate and become nano-sized bubbles that dissolve into the water, thereby further improving the micronization effect on the bubbles.

[0032] like Figure 1 and Figure 2 As shown, the present invention discloses a further technical solution for the diffuser 3. The diffuser 3 has a conical structure, and the end with the smaller opening is connected to the gas-liquid mixing pipe 1. By constructing the diffuser 3 as a cone, the liquid inlet pipe 2, the gas-liquid mixing pipe 1 and the diffuser 3 form a conveying pipeline with large ends and a small middle, which forms a Venturi conveying pipeline, thereby further improving the micronization effect of the bubbles.

[0033] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A micro / nano bubble dissolved oxygen generator, characterized in that, include: A gas-liquid mixing pipe (1) is connected to an inlet pipe (2) and a diffuser pipe (3) at its two ends respectively. A conduit (4) with both ends sealed is coaxially arranged inside the inlet pipe (2). An air inlet pipe (5) connected to the conduit (4) is provided on the gas-liquid mixing pipe (1). Several air holes (6) are arrayed on the outer surface of the conduit (4). A spiral plate (7) is fixed between the outer wall of the conduit (4) and the inner wall of the gas-liquid mixing pipe (1).

2. The micro / nano bubble dissolved oxygen generator according to claim 1, characterized in that, A shaft (8) is coaxially inserted inside the conduit (4). The outer surface of the shaft (8) inside the conduit (4) is provided with a number of spiral blades (9) in a ring shape. An impeller head (10) is fixed at one end of the shaft (8) near the inlet pipe (2).

3. The micro / nano bubble dissolved oxygen generator according to claim 1, characterized in that, The liquid inlet pipe (2) includes a straight section (201) and a conical section (202) connected together. The end of the conical section (202) with a smaller opening is connected to the gas-liquid mixing pipe (1).

4. The micro / nano bubble dissolved oxygen generator according to claim 3, characterized in that, The inner wall of the cone section (202) is provided with several spiral guide grooves (11) arranged in a ring.

5. The micro / nano bubble dissolved oxygen generator according to claim 2, characterized in that, The shaft (8) is fixed with a mounting block (12) at one end near the diffuser (3), and the outer surface of the mounting block (12) is provided with a number of stirring blades (13) in a ring shape.

6. The micro / nano bubble dissolved oxygen generator according to claim 5, characterized in that, The stirring blade (13) includes a mounting frame (1301) fixed on the mounting block (12), and a metal mesh (1302) is fixed inside the mounting frame (1301).

7. The micro / nano bubble dissolved oxygen generator according to claim 1, characterized in that, The inner wall of the gas-liquid mixing tube (1) is provided with a number of ultrasonic transducers (14), which are arranged in a spiral.

8. The micro / nano bubble dissolved oxygen generator according to claim 1, characterized in that, The diffuser tube (3) has a conical structure, and the end with the smaller opening is connected to the gas-liquid mixing tube (1).

Images