Shrimp farming facility

Abstract

To solve the problem of being unable to cope with water quality deterioration due to sludge accumulation because a large convection current cannot be generated throughout a still water area and because dissolved oxygen cannot be made to reach the bottom of water even though a method for splashing water with horizontal shaft turbines and fountain to preserver water quality of still water areas such as aquaculture ponds and lakes, but only causing the flow of a water surface.SOLUTION: Self-floating horizontal rotor blades are rotated at a low speed on a water surface, water at the bottom of the water is made to go up to the water surface with an air lift effect by releasing supply air from a blower with a filter attached to an intake side from many minute holes in a diffuser header pipe directly below the horizontal rotor blades, large convection currents are generated, and activated air and oxygen are dissolved in the water at high concentrations to preserver water quality.SELECTED DRAWING: Figure 3

Description

Detailed Description of the Invention [Technical field]

[0001] This invention relates to a device that combines a convection generating device using a vertical-axis horizontal rotor with an air blower or air compressor that has an air lift effect to generate convection in water with a high dissolved oxygen content, thereby preserving the water quality in still water areas such as aquaculture ponds, lakes, swamps, and dams. [Background technology]

[0002] Conventionally, in order to preserve the water quality in still water bodies such as aquaculture ponds, most methods have involved aerating the water by spinning a horizontal-axis water wheel at high speed, or creating a water current using a fountain.

[0003] In addition, a method has been proposed in which a horizontal rotor on a vertical axis rotates slowly on the water surface to generate large convection currents throughout the still water area. However, when this method is used to aerate aquaculture ponds, a problem arises in that the amount of dissolved oxygen decreases at night when photosynthesis in aquatic plants and algae stops. [Patent Document 1] (See Patent Publication No. 3360075) DISCLOSURE OF THEINVENTION [Problem to be solved by the invention]

[0004] Conventional aeration methods using horizontal axis water wheels or fountains, even if they use a large amount of power, only create a current on the surface of still water areas such as aquaculture ponds, lakes, and swamps, and are unable to create large convection currents that carry oxygen and nutrients to the bottom of the water. This reduces the number of aerobic microorganisms at the bottom of the water and makes it impossible to decompose the sludge that accumulates at the bottom, resulting in water pollution in the entire still water area.

[0005] To solve the above problems, a device has been proposed that rotates a horizontal rotor on a vertical axis at a low speed and generates large convection currents in the entire still water area with a small power, transporting oxygen and nutrients to the bottom of the water, activating aerobic microorganisms such as phytoplankton, and having these microorganisms digest and decompose sediments such as sludge, thereby preserving water quality. However, when photosynthesis of aquatic plants and algae stops at night, the amount of dissolved oxygen in the water decreases, which is a problem for the growth of shrimp and farmed fish. [Means for solving the problem]

[0006] In order to solve such problems, the present inventor discovered that air, particularly water vapor in the air, can be activated, and that aeration of water with that air activates the water and increases the amount of dissolved oxygen, which led to the invention.

[0007] That is, in order to solve the above problems, in the present invention, a filter is attached to the intake side of an aeration / air lift blower, and air supplied from the blower is sent into the water through an aeration header pipe installed at the bottom of the water, thereby causing the water at the bottom of the water to rise to the surface through the air lift effect, while at the same time dissolving air activated by the resonant electromagnetic waves in the water at a high and stable concentration.

[0008] Air activated by resonant electromagnetic waves excites the rotational motion of water molecules in water that have the same natural frequency, separating the hydrogen bonds between the water molecules, reducing the gaps between the water molecules, and allowing the activated air and oxygen to be dissolved stably.

[0009] In addition, activated air is released by a blower from an aeration header pipe located at the bottom of the water directly below the convection generating device of the present invention, generating an upward current due to the air lift effect. Water containing a large amount of dissolved oxygen that reaches the water surface is diffused radially by the horizontal rotors and then sucked to the bottom of the water by the negative pressure generated by the air lift, resulting in the generation of a large convection current in the still water area.

[0010] We also decided to install a nanobubble pushing nozzle. Nanobubbles are bubbles (air bubbles) that are one thousandth of a nano (n) or one billionth of a particle (0.000000001), while microbubbles are bubbles (air bubbles) that are one millionth of a micro (μ) or one micrometer (0.000001).

[0011] The "nanobubble pushing nozzle," which is a means to solve the problem, consists of five items. As a first measure, In order to preserve the water quality in still water areas such as each aquaculture pond, the shrimp farming equipment is characterized by utilizing a nanobubble pushing nozzle that supplies air or the like to the aquaculture pond by self-suction or a compressor, and stirs the air inside the nanobubble pushing nozzle, thereby generating nanobubbles inside the nozzle and mixing them in, thereby improving the water quality of the aquaculture pond and increasing the amount of dissolved oxygen.

[0012] As a second measure, The nanobubble-forcing nozzle applies back pressure to the outlet of the nanobubble-forcing nozzle by passing water from a target culture pond or the like through the nozzle using a circulation pump, thereby making it possible to vary the self-suction amount of air and water. The shrimp culture equipment is characterized in that the amount of bubbles generated and the size of the particles can be variably generated by changing the circulation amount and back pressure.

[0013] As a third measure, The shrimp farming facility such as a farm pond is characterized by combining a vertical-shaft horizontal rotor driven on the water surface of a still water area, an aeration header pipe installed on the water bottom directly below the horizontal rotor, and an air lift blower that supplies air to and releases air from the aeration header pipe.

[0014] As a fourth measure, The shrimp farming equipment in still water such as a farm pond is characterized by having a nanobubble pushing nozzle or a net filter for emitting air on the intake side of a blower.

[0015] As a fifth measure, The nozzle has the advantage that it can be directly connected to a pipe and can generate nanobubbles in-line without the need for a tank or other storage device. Effect of the Invention

[0016] Let's first consider how much effect we can expect from this in terms of energy savings. (1) The circulating water volume Q of this flow and the circulating water volume η per watt are expressed by the following equations. K and k are constants determined by the shape of the blade. Q=K(ωR3) [m3 / min] ···(1) formula η=k{1 / (ωR)2} [m3 / min W] ···(2) formula R is the distance from the axis of rotation to the tip of the paddle blade, representing the spread of the blade, and ω is the angular velocity representing the speed at which the blade rotates. According to this, if you spread the blades and increase R, the amount of water will increase by the cube of that. However, doing so reduces the power efficiency η and results in a large amount of power being consumed to cultivate the water. Therefore, R is kept open, the blades rotate slowly, and (ωR) is reduced to improve power efficiency. In other words, if the blades are opened and rotated slowly, a large amount of water can be cultivated with energy savings. For example, if the blades are spread out to a radius of 1 m and rotated slowly at two revolutions per minute, the power efficiency will be 1.4 m3 / min W and the amount of circulating water Q per minute will be 13 m3 / min. Moreover, the power required for this is only 9.3 W. However, in the conventional method of splashing water, if the radius of the blades is set to 0.23 m, the blades must rotate at least 170 times per minute in order to splash the water. If the blades are rotated this quickly and R is reduced, the power efficiency drops to 0.0037 [m3 / min W], which is 380 times the power consumed when the blades are spread apart and rotated slowly, or 3.5 kW. This is the energy saving effect that can be expected by "spreading the blades and rotating slowly." Next, let us consider (2) the spread of the current moving across the water surface. The flow that flows out from the tip R of the blade and spreads over the water surface flows in such a way that angular momentum is conserved. If the angular velocity of the flow at R is ω0 and that at a point r away from the center of rotation is ω, the distance r that the flow spreads is expressed by the following equation. r=R(ω0 / ω)1 / 2〔m〕 ·····(3) This equation shows that the spread of the water increases in proportion to the spread R of the blade. When a blade with a radius of 1.74m was floated in a 10m deep aquaculture pond and rotated at 3 revolutions per minute with a 50W motor, cultivating 25m3 of water per minute, the temperature difference between the water surface and the bottom of the dam, which was 3°C, disappeared and the temperature was uniform above and below. The water area was 17,000 square meters, and the flow spread was measured to be 130m. Finally, (3) the relationship between the spread of the wings and the current that moves along the bottom of the water. A current that creeps along the bottom of the water will not occur unless the water at the bottom rises to the surface. If an upward current is created, the surrounding bottom water will gather there to fill the gap created by the rising current, and a current will be generated that will crawl along the bottom and converge on the point of the rising current. Therefore, the first priority is to create an upward current. The convection generating device of the present invention can effectively generate water convection using a small amount of power, sending dissolved oxygen and nutrients to the bottom of the water, activating aerobic microorganisms such as phytoplankton, and preserving water quality through their digestive and decomposing action.

[0017] In addition, by emitting activated air into water using the blower of the convection generating device of the present invention, the hydrogen bonds of the water that come into contact with the air, which have a natural frequency, are excited to resonate and separate, and the rotational motion of the water molecules is excited, resulting in finer water clusters and the water becoming activated, weakly alkaline, with a high reduction potential and containing a lot of dissolved oxygen.

[0018] The electron released from the hydrogen bond penetrates the outer shell of the nitrogen in the air and is absorbed, where the nitrogen N becomes activated N-, which then bonds with the hydrogen H+ released from the hydrogen bond to form an amino group, resulting in effects on the growth and productivity of farmed fish such as shrimp, as well as improved taste.

[0019] The driving gear motor can be effectively cooled by installing a blower on the upper part of the cover of the driving gear motor and drawing in fresh air from the lower part of the cover of the gear motor. BEST MODE FOR CARRYING OUT THEINVENTION

[0020] Figure 1 shows the appearance of the nanobubble forcing nozzle. Figure 2 shows the internal structure of the nanobubble forcing nozzle. Overall, it has a roughly rocket-like shape. This nozzle has an inlet and an outlet, which are connected as shown in the block diagram (Figure 3) that shows the relationship between the nanobubble pushing nozzle and the nanobubble diversion in-line piping.

[0021] When water is allowed to flow into the inlet of an aquaculture pond at a pressure above a certain level (0.04 MPa or higher), the water will be collected in the center due to density differences.

[0022] This swirling flow creates a pressure difference between the outer periphery and the center inside the nanobubble injection nozzle. At this time, the center of the nozzle is in a substantially vacuum state. On the one hand, pressurized air flows in through the holes in the nozzle body shown in Figure 1, and the fluid about to be ejected collides with the gas flowing into the center of the vacuum state (ultra-negative pressure state). As the gas and fluid swirl and pass through the outlet, the gas is sheared and broken down into fine particles, becoming nanobubbles.

[0023] Furthermore, the greatest feature of this nozzle is that when the pressurized air mentioned above flows in and attempts to be ejected and collides with the gas attempting to flow into the center of the vacuum state (ultra-negative pressure state), the pressure at which this collision occurs can be freely varied.

[0024] By attaching an element separation device to the end of this, it is possible to create conditions similar to those of pressurized crushing using a single-fluid (water) nozzle, thereby atomizing the material again.

[0025] In this way, the push-in nozzle of the present invention has no limit on the number of circulations. Therefore, this method involves continuously generating nanobubbles in water that has already been mixed with microbubbles, filling the pond with them and supplying the water with fine oxygen particles.

[0026] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 4 shows an elevation view of the shrimp farming facility of the present invention.

[0027] As shown in FIG. 4, the gear motor 1 is fixed to a fixed flange 3 of a fixed support frame 6 which is anchored to a water bottom 17 or land by a fixed rope 8.

[0028] The rotating shaft 2 of the gear motor 1 is connected by a key 4 to a boss 9 to which a self-floating horizontal rotor 7 with floats is attached. When the gear motor 1 is driven, the horizontal rotor 7 with floats rotates at a low speed of 4 to 10 RPM via a thrust bearing 5, and the water level at the tip of the horizontal rotor 7 rises slightly due to dynamic pressure, generating negative pressure below the horizontal rotor 7 and generating convection 15.

[0029] In addition, a blower 10 is installed on top of the gear motor 1, and air is discharged via an air hose 12 from many small diameter holes in an aeration header pipe 13 installed directly below the horizontal rotor 7. The air lift 14 generates an upward current, and the synergistic effect with the convection caused by the horizontal rotor 7 generates fast convection over a wider area.

[0030] A filter 11 that oscillates air is attached to the intake side of the blower 10, and the air that is activated by passing through the filter is released into the water from an aeration header pipe 13, thereby increasing the amount of dissolved oxygen in the water.

[0031] Furthermore, when water comes into contact with activated air, its hydrogen bonds are separated and it becomes fine water clusters. Large amounts of oxygen are dissolved in the spaces between the small water molecules created by the separation of hydrogen bonds. This, together with amino groups, promotes the proliferation of phytoplankton and breaks down and digests organic sludge that accumulates on the bottom of the water into carbon dioxide and water, thereby purifying the water. EXAMPLES

[0032] The present invention has been applied to shrimp farming ponds and has demonstrated the following effects: (1) Farmed shrimp grow quickly. (2) The survival rate of farmed shrimp is increased. (3) There is no accumulation of sludge, making continuous cultivation possible. (4) Improves the taste of farmed shrimp. [Industrial Applicability]

[0033] INDUSTRIAL APPLICABILITY The present invention can be used for preserving water quality in aquaculture ponds, water purification plants, scenic ponds in parks, etc. [Brief description of the drawings]

[0034] [Figure 1] FIG. 1 is a diagram showing the external appearance of a nanobubble pushing nozzle according to a preferred embodiment of the present invention. [Diagram 2] FIG. 2 is a diagram showing the internal structure of the nanobubble pushing nozzle according to the embodiment of FIG. 1. [Diagram 3] FIG. 1 is an external view of the nanobubble flow splitting in-line system. [Figure 4] 1 shows an elevational view of the present invention. [Diagram 5] A cross-sectional side view of the product floating in a landscape pond where transparency is required [Explanation of symbols]

[0035] 1 Gear motor 2-axis 3 Fixed flange 4 Key 5 Thrust bearing 6 Fixed support frame 7 Horizontal rotor blades 8 Fixed rope 9. Boss 10 Blower 11. Intake filter 12 Air hose 13 Aeration header pipe 14 Air Lift 15 Convection 16 Water surface 17 Underwater 21 Nanobubble injection nozzle 22 Nanobubble Diversion In-line Device

Claims

1. This shrimp farming facility utilizes a nanobubble pushing nozzle that can improve the water quality of still water areas such as farm ponds by supplying air or the like to the farm ponds by self-suction or a compressor, stirring the air inside the nanobubble pushing nozzle, and generating and mixing nanobubbles inside the nozzle, thereby improving the water quality of the farm ponds and increasing the amount of dissolved oxygen.

2. 2. The shrimp farming facility according to claim 1, characterized in that the nanobubble-forcing nozzle can vary the amount of air and water that is self-suctioned by applying back pressure to the outlet of the nanobubble-forcing nozzle by passing water from a target farming pond or the like through a circulating pump, and the amount of air bubbles generated and the size of the particles can be varied by changing the circulation amount and back pressure.

3. A shrimp farming facility such as a farm pond, characterized by combining a vertical-axis horizontal rotor that is driven on the surface of still water, an aeration header pipe that is installed on the water bottom directly below the horizontal rotor, and an air lift blower that supplies air to and releases air from the aeration header pipe.

4. A shrimp farming facility in a still water area such as a farm pond, comprising the nanobubble pushing nozzle according to any one of claims 1 to 3, or a net filter that radiates air to the intake side of a blower.

5. The nanobubble pushing nozzle according to any one of claims 1 to 4 can be directly connected to piping without the need for a tank or other storage device, and is capable of generating nanobubbles in-line in shrimp farming facilities such as farm ponds.

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