Efficient oxygenation gas-liquid mixing device for aquaculture

Abstract

The utility model discloses an efficient oxygenation gas-liquid mixing device for aquaculture, which comprises a water pump, an outlet of the water pump is connected with a mixing pipe, the mixing pipe is provided with an air suction port, the other end of the mixing pipe is connected with a conical mixer through a pipeline, and the conical mixer is provided with a liquid outlet. The mixing tube is composed of a Venturi tube structure and a static mixer structure which are integrated, three-time gas-liquid mixing is achieved through the Venturi tube structure, the static mixer structure and a conical mixer, the bubble refining effect is good, the gas-liquid contact area is large, mixing uniformity is good, the mixing and oxygenation efficiency is higher, no moving part exists, and the mixing effect is good. On one hand, the equipment maintenance and repair cost caused by mechanical abrasion and faults is reduced, the stability and reliability of the equipment are improved, on the other hand, water disturbance is avoided, biological stress reaction is reduced, and living beings can have a rest conveniently.

Description

Technical Field

[0001] This utility model relates to an oxygenation device for aquaculture, and more particularly to a high-efficiency oxygenation liquid mixing device for aquaculture. Background Technology

[0002] In fish and shrimp farming, the oxygen concentration in the aquaculture water is particularly important, directly affecting the survival rate of fish and shrimp. Existing aeration devices generally use oxygen generators to produce oxygen and introduce it directly into the aquaculture pond through aeration discs. On the one hand, this method easily causes water disturbance, which may cause stress to some aquaculture organisms that are sensitive to water flow, affecting their growth and survival. On the other hand, the bubbles generated by the aeration discs are relatively large and rise quickly in the water, resulting in a short contact time with the water. This causes some oxygen to escape into the air before it can dissolve, resulting in oxygen waste. Summary of the Invention

[0003] In order to overcome the shortcomings of the existing technology, this utility model provides a high-efficiency oxygenation liquid mixing device for aquaculture.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A high-efficiency oxygenated liquid mixing device for aquaculture includes a water pump, a mixing pipe connected to the outlet of the water pump, an air intake port on the mixing pipe, and a conical mixer connected to the other end of the mixing pipe, with a liquid outlet on the conical mixer.

[0006] The mixing pipe has a venturi tube structure at one end near the water pump and a static mixer structure at the other end. The venturi tube structure and the static mixer structure are an integral part of each other.

[0007] The air intake is located at one end of the venturi tube structure near the water pump.

[0008] The diameter of the conical mixer gradually increases from top to bottom, and the mixing tube is connected to the upper end of the conical mixer.

[0009] The liquid outlet is located on the side wall of the conical mixer.

[0010] The liquid outlet is located below the middle of the conical mixer.

[0011] The liquid outlet is located at the bottom of the conical mixer.

[0012] It also includes a housing for housing a gas-liquid mixing device, the housing having a water inlet and a drain outlet.

[0013] The beneficial effects of this utility model are as follows: This utility model has a mixing pipe connected to the outlet of the water pump, and the mixing pipe is equipped with an air intake. The other end of the mixing pipe is connected to a conical mixer, and the conical mixer is equipped with a liquid outlet. The air intake is drawn into the mixing pipe and mixed with the water for the first time. The mixing pipe itself performs a second mixing, and the conical mixer performs a third mixing. The bubble refinement effect is good, the gas-liquid contact area is large, the mixing uniformity is good, and the mixing and oxygenation efficiency is higher. Moreover, there are no moving parts. On the one hand, it reduces the equipment maintenance and repair costs caused by mechanical wear and failure, and improves the stability and reliability of the equipment. On the other hand, it will not cause water disturbance, reduce biological stress response, and facilitate biological rest. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0015] Figure 1 This is a structural diagram of the present invention;

[0016] Figure 2 This is a diagram of the internal structure of this utility model;

[0017] Figure 3 This is a cross-sectional view of the mixing tube. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0019] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0020] The following describes some embodiments of the present invention with reference to the accompanying drawings.

[0021] Reference Figure 1-3A high-efficiency aeration and liquid mixing device for aquaculture includes a water pump 1, a mixing pipe 2 connected to the outlet of the water pump 1, an air intake 3 on the mixing pipe 2, and a conical mixer 4 connected to the other end of the mixing pipe 2. The conical mixer 4 has a liquid outlet 5. One end of the mixing pipe 2 near the water pump 1 is a Venturi tube structure 6, and the other end is a static mixer structure 7. The Venturi tube structure 6 and the static mixer structure 7 are integrated. The air intake 3 is located at the end of the Venturi tube structure 6 near the water pump 1. Through the Venturi tube structure 6, the static mixer structure 7, and the conical mixer 4, three-stage gas-liquid mixing is achieved, resulting in good bubble refinement, a large gas-liquid contact area, good mixing uniformity, and higher mixing and aeration efficiency. Furthermore, the device has no moving parts, which reduces equipment maintenance and repair costs due to mechanical wear and malfunctions, improves equipment stability and reliability, and avoids water disturbance, reducing biological stress and facilitating aquatic rest.

[0022] Initial mixing: The Venturi tube structure utilizes its contraction-expansion pipe structure to increase the flow velocity and decrease the pressure of the fluid at the throat, creating a negative pressure. This allows gas to be drawn in and initially mixed with the liquid. This mixing method, based on the principle of fluid dynamics, can quickly disperse the gas in the liquid, laying the foundation for subsequent mixing.

[0023] Secondary mixing: The gas-liquid mixture, after initial mixing in the Venturi tube structure, enters the static mixing tube, where a fixed mixing element (such as...) is placed inside. Figure 3 As shown in A), the gas-liquid two-phase fluid will be continuously divided, rotated, and recombine, further refining the bubbles, increasing the gas-liquid contact area, and making the gas-liquid mixing more uniform.

[0024] Three-stage mixing: The gas-liquid mixture from the static mixing tube enters the conical mixer. The conical structure creates a complex flow field in the gas-liquid mixture during the flow process, including axial flow, radial flow, and rotational flow. Under the action of this complex flow field, the gas and liquid phases are fully mixed again, further improving the mixing uniformity.

[0025] Furthermore, the air intake 3 is designed to ensure that water does not exit through the air intake 3 when it passes through the mixing pipe 2. This is based on existing physics knowledge and will not be explained in detail.

[0026] In the first embodiment: the diameter of the conical mixer 4 gradually increases from top to bottom, the mixing tube 2 is connected to the upper end of the conical mixer 4, the liquid outlet 5 is disposed on the side wall of the conical mixer 4, and the liquid outlet 5 is located below the middle of the conical mixer 4; or the liquid outlet 5 is located at the bottom of the conical mixer 4.

[0027] In this embodiment, the gas-liquid mixture, after secondary mixing, enters from the end with the smaller diameter. After entering at a high speed from the small end, the gas and liquid form a complex flow pattern within the conical mixer 4, generating strong shearing and stirring effects. This shearing and stirring can better disperse the gas in the liquid, making the bubble size smaller and more uniformly distributed, further enhancing the gas-liquid mixing process and helping to improve the dissolved oxygen efficiency in the aquaculture water. The fluid gradually flows towards the large end within the conical mixer 4. Due to the guiding effect of the conical structure, the fluid can be more evenly distributed across the entire cross-section of the mixer. This allows the product after gas-liquid mixing to enter the subsequent pipes or aquaculture water more evenly when leaving the mixer, avoiding situations where the local concentration is too high or too low, which is beneficial for providing a uniform dissolved oxygen environment for aquaculture organisms.

[0028] The second embodiment: the diameter of the conical mixer 4 gradually decreases from top to bottom, the mixing tube 2 is connected to the upper end of the conical mixer 4, the liquid outlet 5 is disposed on the side wall of the conical mixer 4, the liquid outlet 5 is located below the middle of the conical mixer 4 or the liquid outlet 5 is located at the bottom of the conical mixer 4.

[0029] The difference between the second embodiment and the first embodiment is that the first embodiment is a cone-shaped structure with a smaller top and a larger bottom, while the second embodiment is an inverted cone-shaped structure with a larger top and a smaller bottom.

[0030] In this embodiment, the fluid enters the conical mixer 4 from the larger end, where the inlet area is larger. The fluid can enter the conical mixer 4 smoothly at a lower flow rate. Compared with the smaller end inlet, the fluid pressure change at the larger end inlet is smaller, and no local high-pressure zone will be generated due to a sudden increase in flow rate. This effectively reduces the flow resistance when the gas and liquid enter the conical mixer 4, reducing energy loss. Since the gas and liquid enter the conical mixer 4 at a relatively low speed, the scouring effect on the inlet pipe and the inlet of the conical mixer 4 is small, which can reduce the wear of pipes and equipment, extend their service life, and reduce equipment maintenance costs.

[0031] It also includes a housing 8 for housing a gas-liquid mixing device, the housing 8 having a water inlet hole 9 and a drain hole 10.

[0032] The water inlet hole 9 corresponds to the inlet of the water pump 1, allowing external water to enter the water pump 1 more smoothly through the water inlet hole 9. At the same time, the water inlet hole 9 can also isolate impurities, preventing them from entering the device and causing wear on the internal structure, affecting normal operation and service life. It can also prevent water bodies, such as the roots and stems of aquatic plants, from entering the device and causing blockages, ensuring that the device's inlet and internal channels are unobstructed and guaranteeing the smooth progress of the gas-liquid mixing process.

[0033] The drainage hole 10 corresponds to the liquid outlet 5. After the gas-liquid mixture is completed, the water discharged from the liquid outlet 5 can be directly discharged through the drainage hole 10, preventing the high-oxygen water (i.e., the water after gas-liquid mixing) from remaining inside the shell 8 and being sucked back into the water pump 1 for further mixing. This would result in excessively high oxygen content, causing gas embolism and other harms to the cultured organisms, directly affecting their normal physiological functions and health. Furthermore, it could disrupt the originally stable microbial community structure in the water. Some beneficial microorganisms may struggle to survive due to environmental changes, while harmful microorganisms may proliferate, affecting the ecological balance of the water and indirectly posing a potential threat to the health of the cultured organisms.

[0034] In this invention, the term "multiple" refers to two or more items unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] It should be noted that when a component is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0036] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A high-efficiency oxygenation gas-liquid mixing device for aquaculture, comprising a water pump (1), characterized in that The outlet of the water pump (1) is connected with a mixing pipe (2), the mixing pipe (2) is provided with an air inlet (3), the other end of the mixing pipe (2) is connected with a conical mixer (4), and the conical mixer (4) is provided with a liquid outlet (5).

2. The efficient oxygenation gas-liquid mixing device for aquaculture according to claim 1, characterized in that The end of the mixing pipe (2) close to the water pump (1) is a venturi structure (6), and the other end of the mixing pipe (2) is a static mixer structure (7); the venturi structure (6) and the static mixer structure (7) are integrated.

3. The efficient oxygenation gas-liquid mixing device for aquaculture according to claim 2, characterized in that The air inlet (3) is arranged at the end of the venturi structure (6) close to the water pump (1).

4. The efficient oxygenation gas-liquid mixing device for aquaculture according to claim 1, characterized in that The diameter of the conical mixer (4) gradually increases from top to bottom, and the mixing pipe (2) is connected with the upper end of the conical mixer (4).

5. The efficient oxygenation gas-liquid mixing device for aquaculture according to claim 4, characterized in that The liquid outlet (5) is arranged on the side wall of the conical mixer (4).

6. The efficient oxygenation gas-liquid mixing device for aquaculture according to claim 5, characterized in that The liquid outlet (5) is located below the middle of the conical mixer (4).

7. The efficient oxygenation gas-liquid mixing device for aquaculture according to claim 4, characterized in that The liquid outlet (5) is located at the bottom of the conical mixer (4).

8. The efficient oxygenation gas-liquid mixing device for aquaculture according to claim 1, characterized in that A shell (8) for accommodating the gas-liquid mixing device is further included, and the shell (8) is provided with a water inlet through hole (9) and a water outlet through hole (10).

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