Efficient protein separator of recirculating aquaculture system

Abstract

The utility model discloses an efficient protein separator of a recirculating aquaculture system, which belongs to protein separators of recirculating aquaculture systems and comprises a separation tank, a rotational flow barrel is arranged in the separation tank, and a water inlet pipe penetrates through the separation tank and is communicated with the rotational flow barrel along the tangential direction. A flow guide plate which is of a spiral structure in the height direction of the rotational flow barrel is arranged in the rotational flow barrel, a preset number of flow guide holes are uniformly formed in the flow guide plate, and an aeration device is arranged in the rotational flow barrel below the flow guide plate. The utility model has the beneficial effects that the flow guide plate and the flow guide hole are matched with the microporous aeration head, so that bubbles and circulating water are fully mixed, and the uniformity of gas-liquid mixing is improved, thereby increasing the contact opportunity and contact time between impurities such as protein and the bubbles, improving the separation efficiency of the impurities and improving the water quality purification effect.

Description

Technical fields:

[0001] This utility model belongs to the technical field of protein separators for recirculating aquaculture systems, and more specifically relates to a high-efficiency protein separator for recirculating aquaculture systems. Background technology:

[0002] Protein skimmers are commonly used in marine recirculating aquaculture systems, where they utilize the principle of air flotation to remove fine suspended particles from the recirculating water.

[0003] Currently, the shortcomings of protein separation devices in the industry are as follows: 1. Insufficient residence time of bubbles in the equipment, affecting the removal effect of suspended particles; 2. Insufficient air intake of the protein separation device and excessive energy of the jet pump; 3. When the protein separation device is used as a mixer for ozone and water, the mixing effect of ozone and water is insufficient, resulting in ozone waste, and it cannot effectively remove residual ozone dissolved in water; 4. The separation cup of the protein separator, as a component for waste discharge and collection, requires regular manual cleaning.

[0004] National utility model patent with patent number 201920216204.7 discloses a protein separation device that uses a jet system to fully stir and mix the ozone and water mixture, which solves the above problems well. However, its gas-liquid mixing effect is not ideal, resulting in foam that is not fine and uniform enough, and the separation efficiency of impurities such as proteins is low. Furthermore, the contact time between impurities such as proteins in the circulating water and the bubbles is short, resulting in poor separation effect, which means that some impurities cannot fully contact the foam and cannot be effectively separated. Utility model content:

[0005] To solve the above problems and overcome the shortcomings of the existing technology, this utility model provides a high-efficiency protein separator for a recirculating aquaculture system;

[0006] The first technical problem to be solved was that the contact time between impurities such as proteins in the circulating water and the air bubbles was short, resulting in poor separation.

[0007] The second technical problem to be solved was that the gas-liquid mixing effect was not ideal, and the separation efficiency of impurities such as proteins was low.

[0008] The specific technical solution of this utility model to solve the above-mentioned technical problems is as follows: the high-efficiency protein separator of the recirculating aquaculture system includes a separation tank, and the separation tank is provided with an inlet pipe, an outlet pipe, a vortex bucket, a foam cleaning cup and an aeration device.

[0009] The cyclone barrel is installed inside the separator tank. The water inlet pipe passes through the separator tank and communicates with the cyclone barrel along the tangential direction. The cyclone barrel is equipped with a guide plate with a spiral structure along the height direction of the cyclone barrel. A preset number of guide holes are evenly opened on the guide plate.

[0010] Furthermore, the aeration device includes multiple microporous aeration heads, which are disposed below the guide plate and connected to an air compressor via an air inlet pipe.

[0011] Furthermore, a foam cleaning cup is fixedly installed above the separation tank, and an overflow pipe is installed inside the foam cleaning cup. The foam cleaning cup is connected to the opening on the top wall of the separation tank through the overflow pipe, and a drain pipe is connected to the bottom of the foam cleaning cup.

[0012] Furthermore, a level gauge is installed on the outer wall of the separation tank.

[0013] Furthermore, the water outlet pipe is connected to a water outlet valve.

[0014] The beneficial effects of this utility model are:

[0015] One advantage of this invention is that the inlet pipe is connected to the vortex tank along the tangential direction of the side wall of the vortex tank, and a guide plate is provided inside the vortex tank. Under the action of the guide plate, the circulating water forms an upward rotating water flow in the vortex tank, which increases the contact time between impurities such as proteins in the circulating water and the bubbles, ensuring that the impurities can fully contact the foam and be separated, increasing the separation efficiency of impurities, and further improving the water purification effect.

[0016] One advantage of this invention is that the guide plate is uniformly provided with guide holes. The guide plate and guide holes, together with the microporous aeration head, allow the bubbles to mix fully with the circulating water, improving the uniformity of gas-liquid mixing. This increases the contact opportunities between impurities such as proteins and the bubbles, thereby improving the separation efficiency. Attached image description:

[0017] Appendix Figure 1 This is a schematic diagram of the internal structure of this utility model;

[0018] Appendix Figure 2 This is a top view cross-sectional diagram of the swirl barrel structure of this utility model;

[0019] Appendix Figure 3 This is a schematic diagram of the external structure of this utility model; in the attached drawing:

[0020] 1. Separator; 11. Inlet pipe; 12. Outlet pipe; 13. Outlet pipe valve; 2. Swirl tank; 21. Guide plate; 211. Guide hole; 22. Microporous aerator head; 221. Air inlet pipe; 3. Foam cleaning cup; 31. Overflow pipe; 32. Sewage pipe; 4. Level gauge. Detailed implementation method:

[0021] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "left," "right," "rear," "lower left," "upper right," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] The specific embodiment of this utility model is as follows: A high-efficiency protein separator for a recirculating aquaculture system includes a separation tank 1, wherein the separation tank 1 is provided with an inlet pipe 11, an outlet pipe 12, a vortex bucket 2, a foam cleaning cup 3, and an aeration device.

[0023] The vortex barrel 2 is installed inside the separation tank 1. The water inlet pipe 11 passes through the separation tank 1 and connects to the vortex barrel 2. The water inlet end of the water inlet pipe 11 is located above the side wall of the separation tank 1. The water outlet end of the water inlet pipe 11 is connected to the vortex barrel 2 through multiple bends along the tangential direction of the side wall of the vortex barrel 2.

[0024] The improvement of this utility model is as follows:

[0025] The cyclone tank 2 is equipped with a guide plate 21 that has a spiral structure along the height direction of the cyclone tank. The guide plate 21 is fixed in the cyclone tank 2 by welding or plastic screws. The guide plate 21 can be made of metal, or it can be made of corrosion-resistant, high-strength plastic to reduce costs and increase service life. Preferably, the height of the guide plate 21 is set to two-thirds of the overall height of the cyclone tank. This setting allows the circulating water to form an upward rotating water flow in the cyclone tank under the action of the guide plate, which can prolong the path of the circulating water in the cyclone tank 2, increase the contact time between impurities such as proteins in the circulating water and bubbles, ensure that impurities can fully contact and be separated from the foam, increase the separation efficiency of impurities, and further improve the water purification effect.

[0026] A further improvement of this utility model is that: a predetermined number of guide holes 211 are evenly opened on the guide plate 21, and the aeration device includes multiple microporous aeration heads 22. The microporous aeration heads 22 are arranged below the guide plate 21. Preferably, there are four microporous aeration heads 22. The microporous aeration heads 22 are connected to an air compressor through an air inlet pipe 221. The microporous aeration heads 22 can evenly disperse the compressed air in the air compressor into tiny bubbles and release them into the rotating water flow through the guide holes 211. The guide plate 21 and the guide holes 211, together with the microporous aeration heads 22, enable the bubbles to mix fully with the circulating water, improve the uniformity of gas-liquid mixing, thereby increasing the contact opportunity between impurities such as proteins and bubbles, and improving the separation efficiency.

[0027] As a preferred embodiment of this utility model, a foam cleaning cup 3 is fixedly installed above the separation tank 1. The foam cleaning cup 3 is made of acrylic material and has an overflow pipe 31 inside. The foam cleaning cup 3 is connected to the opening on the top wall of the separation tank 1 through the overflow pipe 31 to prevent foam from flowing back into the separation tank 1. A drain pipe 32 is connected to the bottom of the foam cleaning cup 3 for discharging foam containing impurities.

[0028] The water outlet pipe 12 is located on the side wall of the separator tank 1 away from the water inlet pipe 11. The water outlet pipe 12 is located below the side wall of the separator tank 1 and is connected to the water outlet pipe valve 13. A level gauge 4 is installed on the outer wall of the separator tank 1. By observing the water level height of different water inlets, the water outlet pipe valve 13 is controlled to adjust the water flow rate, thereby ensuring that a certain water level is maintained so that foam can be discharged from the separator tank 1 and enter the foam cleaning cup 3.

[0029] In another embodiment, the water inlet pipe 11 is connected to a Venturi jet via a flange or welding. When the water flow is large, the Venturi jet is used to initially introduce air, and then the air bubbles are further refined by the microporous aeration head 22. The combination of the Venturi jet and the microporous aeration head 22 improves the gas-liquid mixing effect.

[0030] It should be noted that this utility model is a high-efficiency protein separator for a recirculating aquaculture system. In specific operation...

[0031] Circulating water enters the vortex tank 2 via a water pump and inlet pipe 11, tangentially to the side wall of the vortex tank 2. The circulating water forms a vortex within the vortex tank 2. Due to the spiral-structured guide plate 21, the circulating water forms an upward rotating flow within the vortex tank 2. Simultaneously, compressed air generated by the air compressor is delivered to the microporous aerator head 22 via an air guide pipe. Because the guide plate 21 has evenly distributed guide holes 211, the microporous aerator head 22 disperses the compressed air from the air compressor inlet pipe 221 into tiny bubbles, which are then released into the rotating water flow through the guide holes 211. Due to the rotation of the water flow and the guidance of the guide plate 21, the tiny bubbles mix thoroughly with the water flow and rise evenly. Organic impurities such as proteins are adsorbed onto the bubble surface due to surface tension during the ascent, forming foam. The baffle plate 21 creates a stable upward flow pattern in the separator tank 1, avoiding local water flow turbulence and ensuring that impurities can fully contact the foam and be separated, thus further improving the water purification effect.

[0032] As the foam rises, it eventually enters the foam cleaning cup 3, while the purified water flows out from the outlet pipe 12 and returns to the recirculating aquaculture system. This effectively improves the water quality of the recirculating aquaculture system, providing a cleaner and more stable growth environment for fish, helping to reduce fish disease incidence, increase fish growth rate and stocking density, thereby improving aquaculture efficiency. By observing the water level gauge and adjusting the size of the outlet pipe valve 13, it is ensured that the foam can be effectively discharged into the foam cleaning cup 3. The foam containing impurities in the foam cleaning cup 3 is discharged through the drain pipe 32.

[0033] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency protein separator for a recirculating aquaculture system, comprising a separator tank (1), wherein the separator tank (1) is provided with an inlet pipe (11), an outlet pipe (12), a vortex tank (2), a foam cleaning cup (3), and an aeration device; characterized in that: The vortex barrel (2) is installed inside the separator (1). The water inlet pipe (11) passes through the separator (1) and communicates with the vortex barrel (2) along the tangent direction of the side wall of the vortex barrel (2). The vortex barrel (2) is provided with a guide plate (21) with a spiral structure along the height direction of the vortex barrel. A preset number of guide holes (211) are evenly opened on the guide plate (21).

2. The high-efficiency protein separator for a recirculating aquaculture system according to claim 1, characterized in that... The aeration device includes multiple microporous aeration heads (22), which are located below the guide plate (21). The microporous aeration heads (22) are connected to an air compressor through an air inlet pipe.

3. The high-efficiency protein separator for a recirculating aquaculture system according to claim 1, characterized in that... A foam cleaning cup (3) is fixedly installed above the separation tank (1). An overflow pipe (31) is installed inside the foam cleaning cup (3). The foam cleaning cup (3) is connected to the opening on the top wall of the separation tank (1) through the overflow pipe (31). A drain pipe (32) is connected to the bottom of the foam cleaning cup (3).

4. The high-efficiency protein separator for a recirculating aquaculture system according to claim 1, characterized in that... A level gauge (4) is installed on the outer wall of the separation tank (1).

5. A high-efficiency protein separator for a recirculating aquaculture system according to claim 1, characterized in that... The water outlet pipe (12) is connected to a water outlet valve (13).

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