Microbubble aeration oxygenation device

Abstract

The utility model relates to the technical field of aeration and oxygenation, in particular to a microbubble aeration and oxygenation device. Comprising a water pump connecting pipe, one end of the water pump connecting pipe is connected with a hose, one end of the hose is connected with an aeration pipe, an air inlet pipe is installed on the aeration pipe, and the aeration pipe is composed of a water inlet, an air collecting pipe, a shrinkage pipe and a water outlet. As the sectional area of the water flow is reduced, the flow speed of the water flow is increased, the water flow is also increased when the water flow passes through the joint of the water outlet and the shrinkage pipe, the pressure at the through hole is lower than the atmospheric pressure, and air enters from the air inlet pipe, enters through the through hole and is mixed with the water flow; by changing the diameter and the angle of the through hole, the diameter of the bubble and the position of the bubble in the mixed flow can be changed, so that micro-bubble aeration and oxygenation are realized, and the applicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of aeration and oxygenation, in particular to a micro-bubble aeration and oxygenation device. Background Art

[0002] In the process of aquaculture and tailwater treatment, it is necessary to aerate the water to increase the dissolved oxygen content, thereby ensuring an ideal living environment for aquatic plants and animals and aerobic microorganisms. At present, the mainstream oxygenation equipment in aquaculture systems includes: impeller aerators, waterwheel aerators, surge aerators and aeration aerators. Impeller aerators and surge aerators are mainly used in ponds with deeper water bodies and in environments that require acute oxygenation; waterwheel aerators and aeration aerators are mainly used in aquaculture sites with shallow water bodies that require a good water flow environment. Aeration aerators mainly include two types: microporous aeration aerator and jet aerator. Microporous aeration aerator uses a fan to transport air to the aeration micropores to form tiny bubbles. It has high cost, high energy consumption, large bubbles, and low air utilization rate. Jet aerator uses high-speed moving water flow to generate negative pressure to suck in and mix air, forming a gas-liquid two-phase flow and then discharge it. It has a simple structure, low cost, small bubbles, and high air utilization rate.

[0003] The existing jet aerator brings large bubbles into the water body based on the Venturi effect, has a small oxygen exchange area with the water body, and the bubbles are easy to float up, so they stay in the water body for a short time and take a long time to reach the saturated dissolved oxygen state of the water body. In view of the shortcomings of the existing technology, the utility model provides a micro-bubble aeration and oxygenation device with small bubble diameter and high oxygenation efficiency from the perspective of the structural design of the gas-liquid two-phase flow dissolved oxygen device based on the Venturi effect. Utility Model Content

[0004] The purpose of the utility model is to provide a micro-bubble aeration and oxygenation device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the utility model provides a microbubble aeration and oxygenation device, including a water pump connecting pipe, one end of which is connected to a hose, one end of which is connected to an aeration pipe, and an air inlet pipe is installed on the aeration pipe.

[0006] As a further improvement of the technical solution, the aeration pipe is composed of a water inlet, an air collecting pipe, a contraction pipe and a water outlet.

[0007] As a further improvement of the technical solution, a water inlet is provided at one end of the shrinkable tube and a water outlet is provided at the other end. An air collecting pipe is sealed and fixed to the outer side of the shrinkable tube, and an air inlet pipe is fixedly connected to the upper end of the air collecting pipe.

[0008] As a further improvement of the technical solution, the diameter of the shrink tube is smaller than the diameters of the water inlet and the water outlet.

[0009] As a further improvement of the technical solution, the cavity formed between the shrink tube and the air collecting pipe is connected to the air inlet pipe through the air inlet at the top of the cavity.

[0010] As a further improvement of the technical solution, the connection between the water inlet and the water outlet and the shrink tube is a conical tube, the conical tube has a plurality of through holes evenly distributed along the circumference, and the water outlet is connected to the cavity through the through holes.

[0011] As a further improvement of the technical solution, the water pump connecting pipe is connected to the water pump in the aquaculture pond, and a ball valve is fixedly connected to the water pump connecting pipe.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the two ends of the contraction tube are set as cones, when water flows into the contraction tube, the water flow cross-sectional area is reduced, so the flow rate of the water flow increases, and when the water flows through the connection between the water outlet and the contraction tube, the water flow also increases accordingly, so the pressure at the through hole is lower than the atmospheric pressure, so the air enters from the air inlet pipe, enters through the through hole and mixes with the water flow, and the diameter of the bubble and its position in the mixed flow can be changed by changing the diameter and angle of the through hole, so as to achieve microbubble aeration and oxygenation, thereby improving the applicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a cross-sectional schematic diagram of the aeration pipe of the utility model;

[0015] Figure 3 It is a schematic diagram of the structure of the utility model through hole;

[0016] Figure 4 It is a schematic diagram of the working principle of the utility model.

[0017] The meaning of each number in the figure is:

[0018] 1. Water pump connecting pipe;

[0019] 2. Ball valve;

[0020] 3. Hose;

[0021] 4. aeration pipe; 41. water inlet; 42. air collecting pipe; 43. air inlet; 44. contraction pipe; 45. water outlet; 46. through hole;

[0022] 5. Intake pipe. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0025] Example: See Figure 1-Figure 4 As shown, the present embodiment provides a microbubble aeration and oxygenation device, including a water pump connecting pipe 1, the water pump connecting pipe 1 is connected to a water pump in an aquaculture pond, a hose 3 is fixedly connected to the middle position of the water pump connecting pipe 1, a ball valve 2 is fixedly connected to the outside of the water pump connecting pipe 1, an aeration pipe 4 is arranged on the outside of the water pump connecting pipe 1, and the aeration pipe 4 is used to increase the oxygen inside the water pump connecting pipe 1. By starting the water pump in advance, high-speed water flows into the aeration pipe 4 from the water pump connecting pipe 1, the ball valve 2 and the hose 3 in sequence, and air enters from the air inlet pipe 5 to form a gas-liquid mixture, thereby completing the oxygenation process of the water flow.

[0026] The aeration pipe 4 includes a water inlet 41 and a water outlet 45, a contraction pipe 44 is arranged between the water inlet 41 and the water outlet 45, the outside of the contraction pipe 44 is fixedly connected with an air collecting pipe 42, the upper end of the air collecting pipe 42 is fixedly connected with an air inlet pipe 5, the water inlet 41, the contraction pipe 44 and the water outlet 45 are integrated, and the diameter of the contraction pipe 44 is smaller than the diameter of the water inlet 41 and the water outlet 45, the aeration pipe 4 is used for oxygenation of water flow, and the water flow flows in from the water inlet 41, the water inlet 41 and the water outlet 45 are connected with the contraction pipe 44 at a conical pipe, when the water flows into the contraction pipe 44, the cross-sectional area of ​​the water flow is reduced, so the flow velocity of the water flow increases, and when the water flows through The water flow increases at the connection of the water outlet 45 and the contraction tube 44. There are several through holes 46 distributed along the circumference of the connection of the water outlet 45 and the contraction tube 44. Therefore, the pressure at the through hole 46 is lower than the atmospheric pressure. Therefore, the air enters from the air inlet pipe 5, enters the space between the contraction tube 44 and the gas collecting pipe 42, enters through the through hole 46 and mixes with the water flow to form a gas-liquid mixed flow, completing the water flow oxygenation process. The through hole 46 is conducive to blocking the passage of gas and reducing the speed of gas circulation. When the air and water are mixed, the gas and liquid are fully mixed, and the bubbles generated become smaller, realizing micro-bubble aeration and oxygenation, thereby improving the applicability of the device. By changing the diameter and angle of the through hole 46, the diameter of the bubble and its position in the mixed flow can be changed to realize micro-bubble aeration and oxygenation.

[0027] like Figure 2 As shown: the diameter d of the water inlet 41 in The diameter d of the shrink tube 44 is 15-45 mm, the length of the water inlet is 30-100 mm; s The diameter d of the water outlet 45 is 7.5-30 mm, the length of the shrink tube 44 is 20-80 mm; out The length of the water outlet 45 is 15-45mm, and the length of the water outlet 45 is 30-100mm; the connection between the water inlet 41 and the shrink tube 44, and the connection between the water outlet 45 and the shrink tube 44 are symmetrical conical tubes, and the inclination angle α is 25° to 60°; the connection between the water outlet 45 and the shrink tube 44 is evenly distributed along the circumference with 16 to 48 cylindrical through holes, and the aperture d h is 0.1 to 1.2 mm, the inclination angle β of the hole is 10° to 60°; the diameter d of the air inlet 43 a The diameter is 5 to 20 mm and the length is 10 to 25 mm.

[0028] like Figure 4As shown: when the microbubble aeration and oxygenation device of this embodiment is used, water flows in from the water inlet 41. When it flows into the contraction tube 44, the water flow rate increases due to the reduction of the water flow cross-sectional area. When the water flows through the connection between the water outlet 45 and the contraction tube 44, the water flow also increases accordingly. Therefore, the pressure at the through hole 46 is lower than the atmospheric pressure. Therefore, air enters from the air inlet pipe 5, enters the space between the contraction tube 44 and the air collecting pipe 42, enters through the through hole 46 and mixes with the water flow to form a gas-liquid mixed flow, completing the oxygenation process of the water flow. The through hole 46 is conducive to blocking the passage of gas and reducing the speed of gas circulation. When air and water are mixed, the gas and liquid are fully mixed, and the bubbles generated become smaller, thereby realizing microbubble aeration and oxygenation, and improving the practicality of the device.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A microbubble aeration and oxygenation device, comprising a water pump connecting pipe (1), characterized in that: One end of the water pump connecting pipe (1) is connected to a hose (3), one end of the hose (3) is connected to an aeration pipe (4), and an air inlet pipe (5) is installed on the aeration pipe (4).

2. The microbubble aeration and oxygenation device according to claim 1, characterized in that: The aeration pipe (4) is composed of a water inlet (41), an air collecting pipe (42), a contraction pipe (44) and a water outlet (45).

3. The microbubble aeration and oxygenation device according to claim 2, characterized in that: One end of the shrinkable tube (44) is provided with a water inlet (41), and the other end is provided with a water outlet (45). An air collecting pipe (42) is sealed and fixed to the outside of the shrinkable tube (44), and the upper end of the air collecting pipe (42) is fixedly connected to an air inlet pipe (5).

4. The microbubble aeration and oxygenation device according to claim 3, characterized in that: The diameter of the shrink tube (44) is smaller than the diameters of the water inlet (41) and the water outlet (45).

5. The microbubble aeration and oxygenation device according to claim 3, characterized in that: The cavity formed between the shrink tube (44) and the air collecting pipe (42) is connected to the air inlet pipe (5) through the air inlet port (43) at the top of the cavity.

6. The microbubble aeration and oxygenation device according to claim 5, characterized in that: The connection points between the water inlet (41) and the water outlet (45) and the shrink tube (44) are all conical tubes, and the conical tube has a plurality of through holes (46) evenly distributed along the circumference, and the water outlet (45) is connected to the cavity through the through holes (46).

7. The microbubble aeration and oxygenation device according to claim 1, characterized in that: The water pump connecting pipe (1) is connected to a water pump in an aquaculture pond, and a ball valve (2) is fixedly connected to the water pump connecting pipe (1).

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