An oxygenation device for aquaculture

Abstract

This utility model discloses an aeration device for aquaculture, including a floating hull, a motor, and a water-spraying impeller. An aeration pipe is installed at the bottom of the floating hull. The motor is fixedly mounted on the floating hull, and the water-spraying impeller is fixedly mounted on the output shaft of the motor. The floating hull includes a buoy and a connecting rod. The motor and the buoy are fixedly connected via the connecting rod. A water-shoveling blade is installed on the side end face of the water-spraying impeller, and an axial flow impeller that cooperates with the aeration pipe is installed at the bottom of the impeller. This utility model has the advantages of synergistic surface water-spraying aeration and deep aeration, high air-water mixing efficiency, low energy consumption, and adaptability to different water depths, solving the problems of stratified aeration, oxygen deficiency at the bottom layer, and high energy consumption in traditional equipment.

Description

Technical Field

[0001] This utility model relates to the field of aerator technology, specifically to an aeration device for aquaculture. Background Technology

[0002] In intensive aquaculture, dissolved oxygen in the water is one of the key factors affecting the growth rate, survival rate, and stocking density of farmed organisms. With increasing stocking density, the decomposition of organic matter in the water accelerates, significantly increasing oxygen consumption. Especially at night or during hot seasons, oxygen deficiency can easily occur, leading to fish surfacing and even large-scale mortality. Therefore, aeration equipment has become an indispensable and crucial piece of equipment in modern aquaculture.

[0003] Currently, common aeration equipment mainly includes impeller aerators, paddlewheel aerators, microporous aeration devices, and spray aerators. Among them, impeller aerators use rotating impellers to spray surface water into the air, increasing the contact area between water and air, achieving gas-liquid exchange, and have a strong water agitation ability; microporous aeration devices use blowers to deliver air to the bottom of the pool, releasing tiny bubbles through microporous tubes to increase the dissolved oxygen level of the bottom water. However, existing equipment generally suffers from problems such as limited functionality, low aeration efficiency, or high energy consumption.

[0004] Traditional impeller or spray-type aeration equipment mainly works on the surface of the water. Although it can effectively increase dissolved oxygen in the surface layer, its aeration effect on the middle and lower water layers is limited. It is difficult to break up the dissolved oxygen stratification caused by temperature stratification or organic matter deposition in the water, resulting in the bottom water being in a state of hypoxia for a long time. This can easily lead to the accumulation of harmful substances and affect the aquaculture environment. While microporous aeration systems can directly supply oxygen to the bottom layer, they usually require a separate air compressor or blower, resulting in high energy consumption and cost, as well as high maintenance costs. Therefore, an aeration equipment for aquaculture is needed to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide an oxygenation device for aquaculture, which has the advantages of synergistic effect of surface water spraying oxygenation and deep aeration, high air-water mixing efficiency, low energy consumption and adaptability to different water depths, and solves the problems of stratified oxygenation, hypoxia at the bottom and high energy consumption of traditional equipment.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an oxygenation device for aquaculture, comprising a floating boat, a motor, and a water-spraying impeller, wherein an aeration pipe is provided at the bottom of the floating boat;

[0007] The motor is fixedly mounted on the floating vessel, and the water-spraying impeller is fixedly mounted on the output shaft of the motor. The floating vessel includes a buoy and a connecting rod. The motor and the buoy are fixedly connected by the connecting rod. The side end face of the water-spraying impeller is provided with water-shoveling blades, and the bottom of the water-spraying impeller is provided with an axial flow impeller that cooperates with the aeration pipe.

[0008] As a preferred embodiment of the aeration equipment for aquaculture according to this utility model, a boom is provided at the top of the outer end face of the aeration pipe, and the aeration pipe is fixedly connected to the connecting rod through the boom.

[0009] As a preferred embodiment of the aeration equipment for aquaculture according to this utility model, the top of the side end face of the aeration pipe is provided with a water inlet hole, which is a plurality of small holes evenly arranged.

[0010] As a preferred embodiment of the aeration equipment for aquaculture according to this utility model, the aeration pipe is provided with a constriction throat, and the side end face of the constriction throat is provided with an air intake pipe that is connected to it. The top height of the air intake pipe is higher than the top height of the floating vessel.

[0011] As a preferred embodiment of the aeration equipment for aquaculture according to this utility model, the top of the air intake pipe is provided with an air inlet hopper, and the top of the air inlet hopper is provided with a filter screen.

[0012] As a preferred embodiment of the aeration equipment for aquaculture according to this utility model, the bottom of the aeration pipe is provided with a slidingly connected extension pipe.

[0013] As a preferred embodiment of the aeration equipment for aquaculture according to this utility model, the bottom of the inner end face of the extension tube is provided with spiral blades.

[0014] As a preferred embodiment of the aeration equipment for aquaculture according to this utility model, the bottom of the extension pipe is provided with a bubble plate, and the bottom surface of the bubble plate has a honeycomb structure.

[0015] As a preferred embodiment of the aeration equipment for aquaculture according to this utility model, a screw hole is provided at the bottom of the side end face of the aeration pipe, a fastening screw that is threadedly connected to the aeration pipe is provided in the screw hole, and a knob is provided at the end of the fastening screw.

[0016] As a preferred embodiment of the aeration equipment for aquaculture according to this utility model, the top edge of the extension pipe is provided with a limiting flange.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. This utility model achieves a synergistic effect of surface oxygenation and deep aeration by setting an aeration pipe at the bottom of the floating boat and combining it with an axial flow impeller coaxially installed at the bottom of the water-spraying impeller. When the motor drives the water-spraying impeller to rotate, the shovel blades throw water into the air to achieve surface oxygenation. At the same time, the axial flow impeller forms a downward water flow in the aeration pipe, forcibly transporting the oxygen-rich surface water to the bottom of the pond. This effectively solves the problem that traditional oxygenation equipment only works on the surface and the dissolved oxygen in the deep water is insufficient, and significantly improves the phenomenon of dissolved oxygen stratification in the water.

[0019] 2. This utility model utilizes the Venturi effect structure formed by the constricted throat section of the aeration pipe and the air intake pipe to generate negative pressure and automatically draw in air when high-speed water flows through. The air is then broken into microbubbles by the spiral blades and honeycomb bubble plate at the end of the extended pipe and evenly released to the bottom water area. This achieves efficient air-water mixing without the need for an additional power device, significantly increasing the oxygen mass transfer area and dissolution efficiency. At the same time, the filter screen and air inlet hopper at the top of the air intake pipe can prevent debris from clogging the pipe, solving the problems of high energy consumption, large bubble particle size and low oxygen dissolution efficiency of traditional aeration equipment. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a top view of the present invention;

[0022] Figure 3 For the present utility model Figure 2 Sectional view of AA in the middle;

[0023] Figure 4 For the present utility model Figure 3 Enlarged view at point D;

[0024] Figure 5 For the present utility model Figure 3 Enlarged view of point C.

[0025] In the diagram: 1. Float; 101. Buoy; 102. Connecting rod; 2. Motor; 3. Spray impeller; 301. Shovel blade; 4. Aeration pipe; 401. Crane arm; 402. Axial flow impeller; 403. Constriction throat; 404. Screw hole; 405. Fastening screw; 406. Knob; 407. Limiting flange; 408. Water inlet; 5. Extension pipe; 501. Spiral blade; 502. Bubble plate; 6. Suction pipe; 601. Air inlet hopper; 602. Filter screen. Detailed Implementation

[0026] Please see Figures 1-5 An aeration device for aquaculture includes a floating boat 1, a motor 2 and a water-spraying impeller 3, with an aeration pipe 4 installed at the bottom of the floating boat 1.

[0027] The motor 2 is fixedly installed on the floating boat 1, and the water-spraying impeller 3 is fixedly installed on the output shaft of the motor 2. The floating boat 1 includes a float 101 and a connecting rod 102. The motor 2 and the float 101 are fixedly connected by the connecting rod 102. The side end face of the water-spraying impeller 3 is provided with a water-shoveling blade 301, and the bottom of the water-spraying impeller 3 is provided with an axial flow impeller 402 that cooperates with the aeration pipe 4.

[0028] Furthermore, a boom 401 is provided on the top of the outer end face of the aeration pipe 4, and the aeration pipe 4 is fixedly connected to the connecting rod 102 through the boom 401.

[0029] The aeration pipe 4 is fixedly installed on the connecting rod 102 by the boom 401. The aeration pipe 4 is fixedly installed at the center of the lower end face of the water spray impeller 3, and it is fixed so that it is coaxial with the axial flow impeller 402.

[0030] Furthermore, the top of the side end face of the aeration pipe 4 is provided with a water inlet hole 408, which consists of several small holes evenly arranged.

[0031] When the motor 2 drives the axial impeller 402 to rotate, the aeration pipe 4 generates a water flow along the axial direction of the aeration pipe 4 under the action of the axial impeller 402, thereby continuously transporting the upper layer of water in the pond to the bottom of the pond.

[0032] Furthermore, a constriction throat 403 is provided on the aeration pipe 4, and an air intake pipe 6 is provided on the side end face of the constriction throat 403 and is connected therethrough. The top height of the air intake pipe 6 is higher than the top height of the floating vessel 1.

[0033] A constriction throat 403 is installed on the aeration pipe 4. When the water in the aeration pipe 4 flows through the constriction throat 403, a negative pressure is generated according to the Venturi effect. Air is drawn in by the air intake pipe 6 and pumped into the bottom of the pond to increase the oxygen content of the deep water. The air intake pipe 6 is set higher to prevent water splashed by the water spraying impeller 3 from entering the air intake pipe and affecting the air intake.

[0034] Furthermore, an air intake hopper 601 is provided at the top of the air intake pipe 6, and a filter screen 602 is provided at the top of the air intake hopper 601.

[0035] The intake pipe diameter is increased by the intake hopper 601 to reduce intake resistance. The filter screen 602 is installed to prevent fallen leaves and other debris from entering the intake pipe 6 and clogging it, thus ensuring the stability of the equipment.

[0036] Furthermore, an extension pipe 5 with a sliding connection is provided at the bottom of the aeration pipe 4.

[0037] The extension tube 5 structure with sliding connection allows for adjustment of the length of the extension tube 5 to adapt to waters of different depths, thus expanding the applicability of the equipment.

[0038] Furthermore, a spiral blade 501 is provided at the bottom of the inner end face of the extension tube 5.

[0039] The spiral blades 501 cause the water flow to form a vortex in the extension pipe 5, thereby fully mixing the airflow and water flow, forming small bubbles, and increasing the contact area between water and air.

[0040] Furthermore, a bubbling plate 502 is provided at the bottom of the extension tube 5, and the bottom surface of the bubbling plate 502 has a honeycomb structure.

[0041] The bubble-forming plate 502 further disperses the air bubbles in the water flow, thereby increasing the contact area between the water flow and the air, and thus improving the oxygenation effect.

[0042] Furthermore, a screw hole 404 is provided at the bottom of the side end face of the aeration pipe 4, and a fastening screw 405 that is threadedly connected to the aeration pipe 4 is provided in the screw hole 404, and a knob 406 is provided at the end of the fastening screw 405.

[0043] By rotating the knob 406, the fastening screw 405 is driven to rotate, thereby causing the fastening screw 405 to press against the outer wall of the extension tube 5, fixing the extension tube 5 to the aeration tube 4, and preventing the extension tube 5 from sliding down and touching the bottom during use.

[0044] Furthermore, a limiting flange 407 is provided at the top edge of the extension tube 5.

[0045] The sliding stroke of the extension tube 5 is limited by the limiting flange 407, which prevents the extension tube 5 from falling off after the fastening screw 405 loosens, thus improving the stability of the equipment.

[0046] When using this aeration equipment, adjust the length of the extension pipe 5 according to the water depth of the pond. Loosen the fastening screw 405 by turning the knob 406. After sliding the extension pipe 5 to the appropriate position, turn the knob 406 in the opposite direction to press the fastening screw 405 against the outer wall of the extension pipe 5 to secure it. Then, place the equipment smoothly into the pond. The float 1 will float on the water surface using the buoyancy of the float ball 101. Afterward, connect the power to the motor 2. The motor 2 will drive the water-spraying impeller 3 and the axial flow impeller 402 to rotate. The water-spraying impeller 3 scoops water... The blades 301 spray water to achieve initial oxygenation, and the axial impeller 402 creates a downward water flow in the aeration pipe 4. The upper water enters the aeration pipe 4 through the inlet hole 408 and is transported to the bottom of the pond. When the water flows through the constriction throat 403, a negative pressure is generated due to the Venturi effect, and air is drawn in through the air intake pipe 6. After the air enters the extension pipe 5 with the water flow, it is fully mixed with the water flow by the vortex formed by the spiral blades 501 to form small bubbles. The bubbles are further dispersed by the honeycomb structure of the bubble plate 502, and finally the oxygen-enriched water is transported to the bottom of the pond.

[0047] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An oxygenation device for aquaculture, comprising a floating boat (1), an electric motor (2) and a water-throwing impeller (3), characterized in that: The bottom of the floating vessel (1) is provided with an aeration pipe (4); The motor (2) is fixedly installed on the floating boat (1), and the water-spraying impeller (3) is fixedly installed on the output shaft of the motor (2). The floating boat (1) includes a float (101) and a connecting rod (102). The motor (2) and the float (101) are fixedly connected by the connecting rod (102). The side end face of the water-spraying impeller (3) is provided with a water-shoveling blade (301), and the bottom of the water-spraying impeller (3) is provided with an axial flow impeller (402) that cooperates with the aeration pipe (4).

2. The oxygenation apparatus for aquaculture according to claim 1, characterized by: A boom (401) is provided on the top of the outer end face of the aeration pipe (4), and the aeration pipe (4) is fixedly connected to the connecting rod (102) through the boom (401).

3. The oxygenation apparatus for aquaculture of claim 1, wherein: The aeration pipe (4) has a water inlet hole (408) at the top of its side end face. The water inlet hole (408) consists of several small holes arranged evenly.

4. The oxygenation apparatus for aquaculture of claim 1, wherein: The aeration pipe (4) is provided with a constriction throat (403), and the side end face of the constriction throat (403) is provided with an air intake pipe (6) that is connected to it. The top height of the air intake pipe (6) is higher than the top height of the floating vessel (1).

5. The oxygenation apparatus for aquaculture of claim 4, wherein: The top of the air intake pipe (6) is provided with an air inlet hopper (601), and the top of the air inlet hopper (601) is provided with a filter screen (602).

6. The oxygenation apparatus for aquaculture of claim 1, wherein: The bottom of the aeration pipe (4) is provided with a slidingly connected extension pipe (5).

7. An aeration device for aquaculture according to claim 6, characterized in that: The bottom of the inner end face of the extension tube (5) is provided with a spiral blade (501).

8. The oxygenation apparatus for aquaculture of claim 6, wherein: The bottom of the extension tube (5) is provided with a bubble plate (502), and the bottom surface of the bubble plate (502) is a honeycomb structure.

9. An aeration device for aquaculture according to claim 6, characterized in that: The aeration pipe (4) has a screw hole (404) at the bottom of its side end face. A fastening screw (405) that is threadedly connected to the aeration pipe (4) is provided in the screw hole (404). A knob (406) is provided at the end of the fastening screw (405).

10. An aeration device for aquaculture according to claim 9, characterized in that: The top edge of the extension tube (5) is provided with a limiting flange (407).

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