JP5193855B2 - Water quality improvement device and water quality improvement device - Google Patents

Description

  In the present invention, in a live fish tank, a seafood farm, etc., water is formed into a liquid foam group (soap bubble-shaped bubble aggregate), thereby making the water into a thin film and bringing water and air into contact with each other with high efficiency. Therefore, it is possible to improve the water quality by improving the dissolved gas ratio such as oxygen gas and nitrogen gas that is liable to live underwater organisms. At the same time, by generating microbubbles in the water, The present invention relates to a water quality improvement device and a water quality improvement device capable of improving organic matter such as residual bait on a water surface by sucking and collecting it, and improving the water quality to near transparency through a filtration tank such as physical filtration and biological filtration.

There are various methods for improving the water quality of live fish tanks, fish farms and the like as listed below, and countermeasures have been taken for each of them. Since the apparatus Miata et no combines aeration device and the micro-bubble generator, reference and patent documents JP and the microbubble generator aeration device, separately.
1. An aeration apparatus that increases the circulation flow rate of water to be treated and improves the air refining performance (see, for example, Patent Document 1).
2. A microbubble generator that generates microbubbles by colliding with a collision wall disposed on the downstream side in the pipe (see, for example, Patent Document 2).

Japanese Patent Laid-Open No. 2000-271591 JP 2005-334869 A

However, the aeration apparatus technology described in Patent Document 1 has the following problems. Most aquatic organisms consume only oxygen gas dissolved in water and survive, so increasing the contact area between water and air in conventional water, increasing the contact time, or water and air In the method such as applying pressure to the contact, there is a problem that the amount of nitrogen gas dissolved in water gradually increases.
In addition, the microbubble generator technology described in Patent Document 2 collides water mixed with gas with a plate in a pipe, and generates a microbubble by pulverizing a gas lump by a rapid speed change and shearing action. Therefore, a large hydraulic energy is required, which is uneconomical, and the bubble diameter of the generated microbubbles is large. Without adjustment, there was a problem that microbubbles could not be generated stably.

The present invention solves the above-mentioned problem, and by simply supplying pressure water produced by a pump or the like to the liquid introduction hole of the water quality improver, a group of liquid bubbles (soap bubbles) By forming a thin film of water on the surface of the liquid bubble, absorbing oxygen gas necessary for aquatic organisms by diffusion due to a concentration gradient according to the partial pressure of air, and unnecessarily. Many dissolved gases (nitrogen, carbon dioxide, methane, etc.) can be released into the atmosphere to improve the water quality with balanced gas dissolution for aquatic organisms.
In addition, microbubbles can be stably generated in the water without adjusting the air supply amount from the gas-liquid jet holes facing downward, so feces, residual food, etc. floating in the water Water quality improvement device and water quality improvement device that can improve the water quality with high transparency by allowing the organic matter to float on the water surface and recovering and decomposing the organic matter through filtration tanks such as physical filtration tanks and biological filtration tanks The purpose is to provide.

The water quality improvement device according to claim 1 of the present invention is a device having a hollow body formed substantially rotationally symmetric and having a diameter reduced toward both axial directions of the rotational symmetry axis, and a tangent to the peripheral wall portion of the device body A liquid introduction hole which is opened in a direction and introduces liquid, and two upward and downward gas-liquid jets formed by opening both reduced diameter portions of the hollow portion in the axial direction of the rotational symmetry axis of the hollow portion the hole, one end portion is connected by providing an upward the liquid jetting holes and gaps, and framed pipes other end is self-priming gas into the instrument body is disposed above the water surface, upwards of the liquid to be ejected gas-liquid jet holes or et al., supra by mixing with framed pipes or al inhaled gas, to produce a population (bubble-like bubble aggregate) of the liquid foam, upward is the connection to the upper portion of the gas-liquid ejection hole so as to cover the device body Rutotomoni treated water discharge Anda liquid foam generating container, which is provided with a downward gas-liquid vents has a configuration which is arranged below the water surface.
This configuration has the following effects.
(1) The pressure water injected from the upward gas-liquid jet holes arranged in the water tank is changed into a group of liquid bubbles in the liquid bubble generation container. Further, microbubbles can be generated in the water from the downward gas-liquid jet holes.
(2) Just by supplying pressure water from the liquid introduction hole, a slight gap is provided in the negative pressure gas shaft formed in the vessel body at the center of the upward gas-liquid ejection hole, so that the center portion of the pipe with the frame is By connecting together, air is automatically sucked into the gas shaft from the upper part of the pipe with the frame.
(3) The pressure of the pressure water supplied from the liquid introduction hole is increased in proportion to the negative pressure of the gas shaft formed in the container, and is formed in the container in proportion to the decrease. Since the negative pressure of the gas shaft becomes weak, an appropriate amount of air is self-primedly supplied to the gas shaft without adjusting the amount of air sucked from the upper part of the pipe with the frame.

The water quality improver according to claim 1 of the present invention has the following effects.
(A) By simply connecting the pressure water produced from the existing pump to the liquid introduction hole of the water quality improver in a live fish tank or seafood farm, organic matter such as feces and residual food floating in the water will surface. Therefore, it is excellent in versatility and maintainability.
(B) By making the treated water thin film water on the surface of the liquid bubbles, the oxygen gas necessary for the aquatic organisms is dissolved by the diffusion due to the concentration gradient according to the gas partial pressure of the air, and the gas dissolved unnecessarily. (Nitrogen, carbon dioxide, methane, etc.) can be released to the atmosphere, so it can be easily improved to a well-balanced gas-dissolved water that inhabits aquatic organisms. Yes.

Schematic structure sectional view of water quality improvement device 1 of Embodiment 1 The cross-sectional schematic diagram which represented the behavior of the water in the water quality improvement device 1, the production | generation of a liquid bubble, and a microbubble generation | occurrence | production state when pressure water is supplied and operated to the water quality improvement device 1 of Embodiment 1. Schematic diagram of the vortex suction port 11 that can efficiently suck the surface water in the water tank In the arrangement form of the two types of water tanks WT, the water quality improvement device 1 of the first embodiment is installed, and the surface water of the water tank is sucked using the vortex suction port 11 (a) and the surface water is sucked by the overflow. Schematic schematic diagram of type (b) Schematic diagram when water quality improver 1 is operated using submersible pump U.P in a relatively large tank WT

Explanation of symbols

1 Water quality improvement device 2 Body 2a Liquid introduction hole 3 Gas-liquid ejection hole
4 Pipe with frame 4a Fixing screw 5 Fixing seat 6 Liquid bubble generating container 7 Discharged water outlet 11 Vortex suction port 12 Suction pipe 13 Suction port 14 Water absorption pipe 15 Vortex flow guide plate 21 Flexible hose 22 Tubular base B Upper side of suction port 13 Width E Electric wire FL Float G Guard H Distance between the upward gas-liquid jet hole 3 and surface water KG Suction rubber OF Overflow outlet P Pump PW Pressure water ST Filtration tank SW Treated water U.P Underwater pump VW Negative pressure liquid W1 Swirling flow flowing toward upward gas-liquid ejection hole 3 W2 Swirling flow flowing toward downward gas-liquid ejection hole 3 Wa addition water Wb overflow water WP vortex flow WT water tank X air X1 gas shaft X2 microbubble X3 liquid bubble X4 emission gas

(Embodiment 1)
The water quality improvement device and the water quality improvement device in Embodiment 1 will be described below with reference to the drawings.
FIG. 1 is a schematic cross-sectional view of a water quality improver according to an embodiment of the present invention, wherein 1 is a water quality improver, 2 is formed to be substantially rotationally symmetric, and is reduced in diameter in the axial direction of the rotationally symmetric axis. A container body having a hollow part, 2a is a liquid introduction hole opened in a tangential direction to the peripheral wall part of the container body 3, and 3 is opened in the direction of the axis of rotational symmetry of the hollow part and is formed in a vertically reduced diameter portion of the hollow part. The upward and downward gas-liquid jet holes 4 drilled in accordance with the position of the negative pressure gas axis formed by the swirling flow of the liquid flowing into the vessel body 2 are slightly connected to the upward gas-liquid jet hole 3. A pipe with a frame connected by a fixing screw 4a with a clearance of 5mm, 5 is a fixed seat attached to the body 2 in order to determine the clearance between the upward gas-liquid jet hole 3 and the pipe 4 with a frame, 6 is upward The liquid ejected from the gas-liquid ejection hole 3 is made up of a group of liquid bubbles (a bubble bubble-shaped aggregate of bubbles). ), The liquid bubble generating container fixed to the outer peripheral wall of the vessel body 2, the thin film water on the surface of the liquid bubbles generated in large quantities continuously is destroyed, and the dissolved water balance is obtained. This is the treated water discharge port that is discharged from the lower part of the liquid bubble generating container 6 to the outside.

FIG. 2A shows the behavior of water in the water quality improver 1 and the generation state of the microbubbles X2 and the liquid bubbles X3 when pressure water is supplied to the liquid introduction hole 2a of the water quality improver 1 to operate. It is a cross-sectional schematic diagram.
In addition, the water quality improvement device 1 used in this experiment is made of a substantially transparent material made of polyvinyl chloride and acrylic, and the dimensions of each part are 13.0 mm for the inner diameter of the liquid introduction hole 2 a, 45.0 mm for the inner diameter of the body 2, The liquid ejection hole 3 has a hole diameter of 5.0 mm in both upper and lower sides, the inner diameter of the framed pipe 4 is 2.2 mm, and the liquid bubble generating container 6 is 88.0 mm from the portion connected to the vessel body 2 to the uppermost part.
The gap between the upward gas-liquid ejection hole 3 and the pipe 4 with the frame is about 5 mm, and the portion of the vessel 2 in the figure is Japanese Patent No. 3682286 (fine bubbles) proposed by the present applicant. A microbubble generator (manufactured by Bubble Tank Co., Ltd.) of a generator and a fine bubble generator equipped therewith. (Of course, it is possible to produce scale-up or scale-down other than the dimensions produced this time.)
The frame of the pipe 4 with the frame is fixed to a support portion protruding from the upper outer periphery of the vessel body 2. The pipe 4 with the frame is inserted through the liquid bubble generating container 6, opens the upper end to the upper side of the liquid bubble generating container 6, and sucks ambient air by itself.

The operation will be described with reference to FIG.
By supplying pressure water PW of about 0.02 MPa to 0.04 MPa from the liquid introduction hole 2 a connected in the tangential direction of the peripheral wall portion of the container body 2 into the container body 2, upward gas-liquid is introduced into the container body 2. A swirling flow W1 flowing toward the ejection hole 3 and a swirling flow W2 flowing toward the downward gas-liquid ejection hole 3 are generated, and the centripetal force acts by both swirling flows, and a negative pressure is generated near the center in the body 2. A gas axis X1 is formed.
By aligning the center position of the gas axis X1 and the pipe center of the pipe 4 with the frame connected with a slight gap, it is generated in the body 2 at the upper end in the pipe 4 with the frame. The negative pressure of the gas shaft X1 is transmitted, and the air X is sucked into the gas shaft X1 via the pipe 4 with the frame. With this action, the air X is continuously self-primed by the gas axis X1 in the container body 2 simply by supplying the pressure water PW from the liquid introduction hole 2a. Therefore, at least the upper end of the framed pipe 4 is opened to the gas phase or connected to a container or the like that forms the gas phase, and the position is provided above the liquid bubble generating container 6 as described above. Is desirable.
Further, the air X continuously sucked into the gas axis X1 is largely discharged from the upward gas-liquid jet hole 3 because the distance H to the surface water is short. By this action, liquid bubbles are generated at the moment when the swirling flow W1 is ejected from the upward gas-liquid ejection hole 3 by the water X of the swirling flow W1 discharged from the upward gas-liquid ejection hole 3 and the air X sucked by the gas axis X1. A large amount of liquid bubbles (soap bubble-shaped bubble aggregates) X3 can be generated in the container 6.
As a result, the water of the swirl flow W1 is changed to the thin film water on the surface of the liquid bubble X3, and the efficiency of diffusion due to the concentration gradient according to the gas partial pressure of the air is improved. Absorption efficiency is improved. Further, when the liquid bubbles are destroyed, the gas dissolved unnecessarily for the aquatic organisms can be diffused into the atmosphere as the diffused gas X4.
In addition, from the lower part of the liquid bubble generating container 6, water in which a gas dissolved balance is obtained is discharged from the treated water discharge port 7 as treated water SW.
Further, from the downward gas-liquid jet hole 3, the negative pressure liquid VW which is attracted by the negative pressure of the gas axis X 1 generated in the container body 2 and tries to enter, and swirls at high speed from the inside of the container body 2. However, the air X collected on the gas axis X1 placed between the swirling flow W2 discharged is sheared into microbubbles X2, and discharged into the water together with the swirling flow W2.

When the pressure of the pressure water PW supplied from the liquid introduction hole 2a is low, the negative pressure of the gas shaft formed in the body is weak, and when the pressure is high, the negative pressure of the gas shaft formed in the body is strong.
With this action, in the case of the water quality improver 1 having a diameter of 5.0 mm of the gas-liquid ejection hole 3, the distance H from the upward gas-liquid ejection hole 3 to the surface water is set, for example, when the pressure is low (0.02 MPa). When the pressure is high (0.04MPa) when the pressure is high (0.04MPa), an appropriate amount of air can be supplied to the gas shaft inside the container without adjusting the supply of air that is self-primed from the upper part of the framed pipe 4. Is self-primed.
In addition to the water quality improver 1 having the diameter of 5.0 mm of the gas-liquid jet hole 3 that has been activated, the gas-liquid jet hole 3 has a diameter of 6.5 mm and 8.0 mm, and the pressure of the pressure water PW is changed to produce gas-liquid. The total amount of discharged water discharged from both the upper and lower holes of the ejection hole 3 was measured, and the liquid bubble generation behavior in the liquid bubble generation container 6 and the state of microbubble generation from the downward gas-liquid ejection hole 3 into the water were observed.
When the pressure water PW was 0.02 MPa, the total water discharge amount per minute was 6.1 liters when the gas-liquid jet hole diameter was 5.0 mm, 8.7 liters when 6.5 mm, and 9.5 liters when 8.0 mm, and 9.5 liters when 8.0 mm.
When the pressure water PW was changed to 0.06 MPa, 5.0 mm was discharged at 8.6 liters, 6.5 mm at 14.2 liters, and 8.0 mm at 14.8 liters.
When pressure water PW having a high pressure can be used from the above measured numerical values, generation of liquid bubbles and microbubbles can be generated even if the upper and lower diameters of the gas-liquid ejection holes are increased, and the amount of treated water can be increased.
Further, if the pressurized water PW with high pressure can be supplied to the liquid introduction hole 2a, the downward gas-liquid jet hole 3 is immersed in the water, and even if the upward gas-liquid jet hole 3 is exposed in the air, a frame is attached. It is understood that air X can be self-primed from the upper part of the pipe 4, a large amount of liquid bubbles can be generated in the liquid bubble generating container 6, and microbubbles can be generated in the water from the downward gas-liquid jet holes 3. It was.
Therefore, if pressure water PW of 0.06 MPa or more is used, it can be operated simply by immersing the downward gas-liquid jet hole 3 in the water. It was found that it was suitable for operation.

The upper diagram of FIG. 2B is an enlarged schematic diagram when the swirling flow W1 ejected from the upward gas-liquid ejection hole 3 is changed to the liquid bubble X3 in the liquid bubble generation container 6, and the surface of the liquid bubble X3 The O ₂ in the liquid bubble is absorbed by the thin film water, and the gas (for example, N ₂ ) unnecessarily dissolved in the thin film water on the surface of the liquid bubble X3 is dissipated in the liquid bubble. The lower figure of b) is an enlarged view of the thin film water on the surface of the liquid bubble X3, and shows the absorption of gas O ₂ and the emission of N ₂ .

  FIG. 3 is a schematic diagram of a vortex suction port 11 capable of efficiently sucking surface water into the pump, 12 is a conical suction tube having a slightly larger tube diameter on the upper side, and 13 is a suction port on the upper side. An inverted triangular suction port with an increased width B, 14 is a water absorption pipe connected to the suction side of the pump P, and 15 is a system that efficiently sucks water on the surface of the water tank WT and generates a vortex flow WP in the suction pipe 12. B is a width of the upper side of the suction port 13, G is a guard for preventing fish and large foreign matters from being sucked into the pump P, and KG fixes the vortex flow suction port 11 to the water tank WT. For sucker rubber. (Even if the suction pipe 12 is cylindrical, the vortex flow WP can be generated in the suction pipe 12.)

FIG. 4 shows the type (a) in which the water quality improver 1 of Embodiment 1 is installed in the water tank WT, and the organic matter floating on the surface water by the microbubble X2 is sucked into the surface water using the vortex suction port 11; It is a schematic diagram of the type (b) which attracts | sucks surface water by overflow.
(A) The surface water of the water tank WT is sucked by the pump P through the vortex suction port 11 and the filtration tank ST, and the pressure water PW is generated and supplied to the water quality improver 1 to generate the microbubble X2 to generate the inside of the water tank WT. By adhering to organic matter such as feces and residual food, organic materials such as feces and residual food float on the surface water.
In addition, the vortex suction port 11 is an inverted triangular suction port 13 in which the width B of the suction port on the upper side is increased in order to efficiently suck organic matter such as feces and residual food floating on the surface water into the pump P. By drawing the surface water efficiently and generating a vortex flow WP in the suction pipe 12, even in the case of organic matter such as feces and residual food with increased buoyancy, the direction of the water absorption pipe 14 at the bottom of the vortex suction port 11 It is a schematic diagram of a water quality improvement device that can be sucked into the water tank and can pass through the filtration tank ST to remove the organic matter in the water tank WT and improve the water quality.
(B) The filtration tank ST is arranged at the lower part of the water tank WT, the water in the filtration tank ST is sucked by the pump P, and the pressure water PW is made and connected to the water quality improver 1 arranged in the upper water tank WT. Thus, microbubbles X2 are generated in the water tank WT, and are attached to organic matter such as feces and residual food as in (a) above, and are floated on the surface water by increasing buoyancy.
At the same time, the amount of water in the water tank WT increases, so that the surface water falls from the overflow outlet OF to the lower filtration tank ST and passes through the filtration tank ST, so that the water quality can be improved. It is a schematic diagram of an improvement apparatus.

FIG. 5 is a schematic diagram when the water quality improver 1 is operated using the submersible pump UP in a relatively large water tank WT to which the additional water Wa is supplied. (E is electric wire)
(A) installs the submersible pump UP at the bottom of the water tank WT, and supplies the pressure water PW from the flexible hose 21 to the water quality improver 1 on the water surface. At this time, since the distance between the water quality improvement device 1 and the water surface is fixed to the float FL, the distance between the water quality improvement device 1 and the water surface does not change even in a place where the water level in the water tank WT fluctuates. Therefore, it is possible to optimally generate the liquid bubbles X3 and generate the microbubbles X2. Due to the generation of the microbubbles X2, the organic matter in the water tank WT floats and additional water Wa is supplied, so that the surface water is drained as overflow water Wb.
Moreover, since the submersible pump UP and the water quality improvement device 1 can be separated if the flexible hose 21 is lengthened, the water in the water tank WT can be effectively convected.
(B) When the water level in the water tank WT does not fluctuate, the cylinder base 22 having a lower opening is installed at the bottom of the water tank WT, and the submersible pump UP is arranged near the upper surface of the water surface so as to operate. In this method, water is automatically sucked into the submersible pump UP from the lower opening portion, and the pressure water PW is supplied to the water quality improver 1.

(1) In live fish tanks and seafood farms, etc., it is possible to remove organic matter such as feces and residual foods that are efficiently and efficiently saved in water, and to make the water quality highly transparent, and at the same time, it is easy to inhabit underwater organisms. It is possible to provide a water quality improvement device and a water quality improvement device capable of improving the water quality in which gas dissolved balance such as oxygen gas and nitrogen gas is balanced.

Claims (1)

A device body having a hollow portion which is reduced in diameter is formed substantially rotationally symmetrical towards both axial direction of the rotation symmetry axis,
A liquid introduction hole that opens in a tangential direction to the peripheral wall portion of the vessel body and introduces a liquid;
Two upward and downward gas-liquid jet holes formed by opening both reduced diameter portions of the hollow portion in the axial direction of the rotational symmetry axis of the hollow portion;
One end connected by providing an upward the liquid jetting holes and gaps, and framed pipes other end is self-priming gas into the instrument body is disposed above the water surface,
The liquid to be ejected upwardly of said one liquid ejection holes et al., Supra by mixing with framed pipes or al inhaled gas, to produce a population (bubble-like bubble aggregate) of the liquid foam, has the upward of the gas-liquid liquid bubbles connected Rutotomoni treated water outlet in the upper portion is provided in the way the device body to cover the ejection holes generator container, and
A water quality improver , wherein the downward gas-liquid jet holes are arranged below the water surface .

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