JP2014014359A - Fish-and-shellfish oxygen water and manufacturing system therefor, fish-and-shellfish breeding apparatus, fish-and-shellfish breeding method, fish-and-shellfish transporting method, and oxygen ice for fish-and-shellfish - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide fish-and-shellfish oxygen water useful for breeding and transporting the fish-and-shellfish.SOLUTION: The state of the fish-and-shellfish oxygen water is maintained for 35 days or longer such that a dissolved oxygen concentration is 25 ppm or higher under the opened atmosphere, and the fish-and-shellfish oxygen water is produced by a producing system including: a mixing device 10 for mixing oxygen and water; and pressurizing means. A mixing unit G of the mixing device 10 includes: a supply hole; a discharge hole; a flow passage for making the supply hole communicate with the discharge hole; and a plurality of cylindrical-column-shaped pins P protruded from the flow passage and subjected to super vibrations accompanying the contact with supplied water. The supply hole is arranged near the center of the mixing unit G, the discharge hole is arranged near the outer circumference edge thereof, a plurality of annular rows formed of a plurality of pins P arranged on concentric virtual circles are arranged from the center of the mixing unit toward the outer circumference edge, and the pins P are radially arranged from the center of the mixing unit toward the outer circumference edge. Water containing oxygen is supplied from the supply hole to the flow passage by the pressurizing means, the water containing oxygen passes through the flow passage while contacting the pins P, and oxygen and water are mixed by the super vibrations of the pins P and discharged from the discharge hole.

Description

  The present invention relates to oxygen water for fish and shellfish, a manufacturing system thereof, a device for raising fish and shellfish, a method for raising fish and shellfish, a method for transporting fish and shellfish, and oxygen ice for fish and shellfish.

  Regarding the quality of fresh fish shellfish, it is known that various factors such as breeding water temperature and stress experienced during survival are related. For example, in Non-Patent Document 1, a method for suppressing hardening of scallop shells It has been proposed that the scallop be cultivated under highly dissolved oxygen.

  Further, for example, Patent Literature 1 discloses a fish tank for aeration that aspirates oxygen-enriched air generated from an oxygen-enriched apparatus having an oxygen-enriched membrane and a negative pressure pump to water in an aquaculture tank. In this fish tank, the oxygen concentration can be easily adjusted.

JP 2004-305035 A

Nippon Suisan Gakkaishi 76 (5), 946-952 (2010), Effects of low-temperature storage on hardening control of fresh scallops, Tadaaki Takeda et al.

  Thus, in the breeding (cultivation) of fish and shellfish, the importance of oxygen supply to fish and shellfish has been suggested, but oxygen water produced by the method of Patent Document 1 or the conventional pressurization method ( There is no report that the remarkable effect in the actual breeding site has been confirmed by (freshwater / seawater).

  This is because, in the case of conventional oxygen water, even if the amount of dissolved oxygen is considered to be adjusted, in fact, there is a possibility that dissolved oxygen is immediately released into the atmosphere as a gas. Because it is expensive. For this reason, it is thought that oxygen supply to fish and shellfish is actually not performed sufficiently. Therefore, oxygen water that can reliably supply oxygen to fish and shellfish is desired.

  In addition, according to such oxygen water, for example, it is considered that the freshness of fish and shellfish can be maintained, and it can be applied to transportation of fish and shellfish that have been landed.

  This invention is made | formed in view of the above situations, and makes it a subject to provide oxygen water suitable for breeding of fish and shellfish and transportation of fish and shellfish, and this manufacturing system. Furthermore, in the rearing of fish and shellfish, to provide a shellfish rearing device and method that can reliably supply oxygen to the fish and shellfish, and a method for transporting fish and shellfish that can maintain the freshness of the fish and shellfish Is an issue.

In order to solve the above-described problems, the present invention provides the following oxygen water for fish and shellfish and a production system thereof, a fish and shellfish breeding device, a fish and shellfish breeding method, a fish and shellfish transportation method, and a fish and shellfish oxygen ice. .
<1> An oxygen water for fish and shellfish characterized in that a dissolved oxygen concentration of 25 ppm or more persists for 35 days or more in a released atmosphere.
<2> The oxygen water for fish and shellfish according to claim 1, wherein the specific gravity is 1.004 to 1.007.
<3> The oxygen water for fish and shellfish is manufactured by a manufacturing system including a mixing device including a disc-shaped mixing unit that mixes oxygen and water, and a pressurizing unit.
The mixing part of the mixing device
A supply hole;
A discharge hole;
A flow path that connects the supply hole and the discharge hole, and a plurality of cylindrical pins that protrude from the flow path and super vibrate in contact with the supplied water,
A supply hole is disposed near the center of the mixing portion, a discharge hole near the outer periphery, or a discharge hole near the center, and a supply hole near the outer periphery.
Annular rows formed by a plurality of pins arranged on concentric virtual circles are arranged in a plurality of rows from the center of the mixing portion toward the outer peripheral edge, and the pins are arranged radially from the center of the mixing portion toward the outer peripheral edge. And
The pin has a diameter D
0.004R ≦ D ≦ 0.089R (R represents the radius of the mixing portion)
Including those that are
Oxygen-containing water is supplied from the supply hole to the flow channel by the pressurizing means, oxygen-containing water passes through the flow channel with contact with the pin, and the pin is super-vibrated to mix oxygen and water. An oxygen water for fish and shellfish obtained by being discharged from a discharge hole.
<4> A method for breeding fish and shellfish, comprising breeding fish and shellfish in an aquarium containing oxygen water for fish and shellfish.
<5> A method for transporting fish and shellfish, comprising transporting the fish and shellfish in oxygen water for fish and shellfish.
<6> A production system for oxygenated water for fish and shellfish, including a mixing device having a disk-shaped mixing unit that mixes oxygen and water, and a pressurizing unit. The mixing unit of the mixing device includes a supply hole, Near the center of the mixing section, which has a discharge hole, a flow path that connects the supply hole and the discharge hole, and a plurality of cylindrical pins that protrude from the flow path and super vibrate when contacted with the supplied water A feed hole, a discharge hole near the outer periphery, a discharge hole near the center, a supply hole near the outer periphery, and an annular row formed by a plurality of pins arranged on concentric virtual circles, Are arranged in a plurality of rows from the center to the outer peripheral edge, and the pins are arranged radially from the center to the outer peripheral edge of the mixing portion, and the pin has a diameter D of 0.004R ≦ D ≦ 0.089R (R Indicates the radius of the mixing part)
The oxygen-containing water is supplied from the supply hole to the flow path by the pressurizing means, and the oxygen-containing water passes through the flow path with contact with the pin, and the pin is super-vibrated to generate oxygen. A system for producing oxygen water for fish and shellfish, characterized in that oxygen water produced by mixing water with water is discharged from the discharge hole.
<7> The system for producing oxygenated water for fish and shellfish, wherein the pressurizing means can supply water containing oxygen at a pressure of 0.1 MPa or more.
<8> A fish shell breeding apparatus including the oxygen water production system and a water tank to which oxygen water produced by the oxygen water production system is supplied.
<9> Oxygen ice for fish and shellfish obtained by freezing the oxygen water for fish and shellfish.

  According to the oxygen water for fish shells of the present invention, since oxygen can be reliably supplied to the fish shells, it can be effectively used for raising seafood or transporting fish shells. According to the method for raising seafood of the present invention, it is possible to reliably supply oxygen to fish and shellfish, so that the state of fish and shellfish is well maintained, growth can be promoted, and quality can be improved, The survival time of fish and shellfish can be extended. In addition, according to the method for transporting fish and shellfish according to the present invention, the state of seafood is well maintained, the life of the fish and shellfish is extended, the killing and lesions of the fish and shellfish are suppressed, and the freshness is improved. It can be transported while being maintained.

It is the perspective view which illustrated the mixing apparatus in the manufacturing system of oxygen water for fish shellfish of the present invention. It is the perspective view which illustrated the mixing part of the mixing apparatus illustrated in FIG. FIG. 3 is a cross-sectional view illustrating the main body (mixing unit) of the mixing apparatus illustrated in FIGS. 1 and 2. (A) is the front view which illustrated the form of the mixing part of the main body of the mixing apparatus illustrated in FIG. 1, FIG. (B) is the elements on larger scale of (A). It is explanatory drawing which illustrated one Embodiment of the mixing apparatus in the oxygen water manufacturing system of this invention, and has shown the principle of mixing typically. It is an assembly drawing which illustrated one embodiment of the mixing device in the oxygen water production system for fish shellfish of the present invention. It is an assembly drawing which illustrated one embodiment of the mixing device in the oxygen water production system for fish shellfish of the present invention. It is the block diagram which illustrated one embodiment of the manufacturing system of oxygen water for fish shells of the present invention. It is the block diagram which illustrated one embodiment of the manufacturing system of oxygen water for fish shells of the present invention. It is the perspective view which showed typically the form of the main body of the mixing apparatus used in the Example. It is the front view which showed typically the form of the main body of the mixing apparatus used in the Example. It is sectional drawing which showed typically the main form of the mixing apparatus used in the Example. It is sectional drawing which showed typically the form of the mixing apparatus used in the Example. It is a graph which shows a time-dependent change of the dissolved oxygen concentration of oxygen water for fish shells manufactured with the manufacturing system of oxygen water for fish shells of the present invention. It is a graph which shows a time-dependent change of the dissolved oxygen concentration of oxygen water for fish shells manufactured with the manufacturing system of oxygen water for fish shells of the present invention.

  For example, in the case of oxygen water for beverages that has been commercially available, oxygen that has been dissolved under pressure immediately after opening the container is released, whereas oxygen water for seafood of the present invention is Since oxygen is kneaded and mixed in water at a high level, it has a completely different characteristic that a dissolved oxygen concentration of 25 ppm or more lasts for 35 days or more in a released atmosphere. . Here, “release” refers to, for example, a state where the seawater oxygen water is exposed to the atmosphere. However, for example, if the oxygenated water for seafood is sealed in a sealed container or the like, it goes without saying that a state of a high dissolved oxygen amount is maintained for a longer period of time.

  The dissolved oxygen concentration can be measured, for example, by a known method such as a diaphragm electrode method or a Winkler method, and a commercially available dissolved oxygen meter can be appropriately used. Furthermore, although the dissolved oxygen concentration in the oxygen water for fish and shellfish of the present invention is also affected by the temperature (water temperature), as a reference temperature, for example, a range of about 0 ° C. to 40 ° C. is considered. At temperature, a state where the dissolved oxygen concentration is 25 ppm or more lasts for 35 days or more in a released atmosphere, and under suitable conditions, a state where the dissolved oxygen concentration is 25 ppm or more lasts for at least 180 days.

  Further, the oxygenated water for seafood of the present invention has a specific gravity of 1.004 to 1.007 at about 20 ° C., although it depends on conditions such as temperature. This is presumed that oxygen and water for seafood oxygen are kneaded in a high-dimensional state, hydrogen bonds are broken, and inclusion is occurring.

  Therefore, the oxygen water for fish and shellfish can be supplied to fish and shellfish reliably because the oxygen kneaded in a high dimension is maintained at a state where the dissolved oxygen concentration is 25 ppm or more under atmospheric pressure for 35 days or more. It can be effectively used for raising seafood or transporting shellfish.

  Examples of the fish and shellfish targeted by the present invention include shellfish such as oysters, scallops and clams, saltwater fish such as Thailand, flounder, tuna, hamachi and horse mackerel, freshwater fish such as carp, rainbow trout and ayu, eels and shrimps. , Crab, squid and octopus are widely included. Furthermore, these fish and shellfish are not limited to edible ones, and include, for example, ornamental fish such as goldfish and tropical fish.

  In the method for breeding fish and shellfish of the present invention, the fish and shellfish are bred in a water tank supplied with the oxygen water for fish and shellfish of the present invention. As a result, oxygen can be reliably supplied into the body of the fish and shellfish, so that the state of the fish and shellfish is maintained well, growth can be promoted, quality can be improved, and the survival time of the fish and shellfish is extended. can do. In the fish shellfish breeding method of the present invention, breeding conditions (temperature, amount of water, amount of food, etc.) can be appropriately set according to the type and number of fish shellfish.

  Similarly, in the method for transporting fish and shellfish according to the present invention, for example, the oxygen water for fish and shellfish according to the present invention can be transported in a state where the fish and shellfish that have been landed are held in oxygen water. . Oxygen water for fish and shellfish keeps the state of fish and shellfish in good condition and extends the lifespan of fish and shellfish, so that the killing and lesions of fish and shellfish are suppressed and transported while maintaining good freshness. it can. In the method for transporting fish and shellfish of the present invention, the conditions (temperature, amount of water, etc.) during transport can be set as appropriate according to the type and number of fish and shellfish.

  Hereinafter, the production system of oxygen water for fish shells of the present invention will be described.

  The production system for oxygen water for fish and shellfish of the present invention includes a mixing device having a mixing part of oxygen and water and a pressurizing means.

  The water used in the system for producing oxygen water for fish and shellfish of the present invention includes both seawater and fresh water (fresh water). Depending on the type of fish and shellfish to be bred, either seawater or fresh water is appropriately used. You can choose.

  The mixing unit of the mixing device has a supply hole, a discharge hole, a flow path communicating with the supply hole and the discharge hole, and a plurality of pins protruding from the flow path and supervibrating with contact with the supplied water. ing.

  The shape of the mixing part is not particularly limited, and can be appropriately designed into a disk shape, a columnar shape, a square shape, a spherical shape or the like. It can also have a plurality of mixing sections. As a material constituting the mixing portion, a hard metal / alloy (for example, iron or steel), a silicon-based material (including glass or carbon) such as diamond or ceramics, a resin material, or the like can be selected. . Here, the resin material (for example, fluororesin) has sufficient strength if applied for mixing and emulsifying organic flexible materials.

  The shape, arrangement position, and number of arrangement of the supply hole and the discharge hole are not particularly limited, and can be appropriately designed in consideration of the overall shape of the mixing unit, the pressure condition by the pressurizing means, and the like. Water containing oxygen is supplied from the supply hole into the mixing unit, and the mixed oxygen water is discharged from the discharge hole.

  The flow path may be, for example, linear or curved, and the shape, length, width, etc. are not particularly limited and can be designed as appropriate. Further, for example, when the entire shape of the mixing unit is a disk shape having a concave portion, and the supply hole and the discharge hole are respectively formed at the center and the outer periphery of the mixing unit, the flow path is formed at the center of the mixing unit. It can be formed as a circular space extending from the outer periphery to the outer periphery.

  The number of pins, the positions of the pins, the distance between adjacent pins, etc. can be appropriately designed in consideration of the positions of the supply holes and discharge holes, the shape of the flow path, the amount of water, the oxygen content, etc. it can. Moreover, the shape of the pin can be appropriately designed to a cylindrical shape, a prismatic shape, etc., but from the viewpoint of the contact efficiency between the fluid (water containing oxygen) and the pin, the flow of fluid (water containing oxygen), etc. Is preferably cylindrical. Furthermore, the height, width (diameter), etc. of the pin can be appropriately designed in consideration of the shape of the flow path, the amount of water, the oxygen content, etc., and a combination of pins having different widths (diameters) should be used. You can also.

  Furthermore, the pin can cause cavitation in the water containing oxygen by super-vibration in contact with the water containing oxygen supplied under pressure. Thereby, oxygen and water are uniformly dispersed and dissolved. Here, “super vibration” refers to vibration in the ultrasonic region (for example, the frequency is 20 kHz or more), and “cavitation” refers to the formation of fine bubbles due to oxygen in a short time in the flow of water. A physical phenomenon that occurs and disappears.

  The pressurizing means may be any means as long as it can supply water containing oxygen at a predetermined pressure from the supply hole of the mixing unit, and examples thereof include a known pump. For example, the pressurizing means is preferably capable of pumping water containing oxygen at a pressure of preferably 0.1 Mpa or more, and practically 0.1 Mpa to 10 Mpa.

  Oxygen and water pumped at a predetermined pressure by the pressurizing means are pressed from the supply hole of the mixing part of the mixing device and come into contact with the pin, causing super vibration of the pin and causing cavitation in water containing oxygen Can do. For this reason, oxygen water for fish and shellfish in which oxygen and water are uniformly dispersed and dissolved is generated.

  The fish and shellfish breeding apparatus of the present invention includes the above-described production system for oxygen water for fish and shellfish and a water tank to which oxygen water produced by this production system is supplied.

  A capacity | capacitance, a shape, material, etc. are not specifically limited, Aquarium can be suitably selected according to the kind, number, etc. of the fish shellfish to breed. For example, a ginger in the case of raising fish and shellfish, a glass aquarium for ornamental use, and the like can be exemplified. Further, for example, the mixing device and the water tank can be connected directly or indirectly, or may be in a separated non-connected state.

  By breeding the desired fish and shellfish in the aquarium supplied with the oxygenated water for fish and shellfish of the present invention, oxygen can be reliably supplied to the body of the fish and shellfish. Will improve. In addition, the survival time of the fish and shellfish is increased.

  Furthermore, one Embodiment of the mixing apparatus in the manufacturing system of oxygen water for fishery products of this invention is described in detail.

  FIG. 1 is a perspective view illustrating an embodiment of a mixing apparatus in a production system for oxygenated water for seafood of the present invention. FIG. 2 is a perspective view illustrating a mixing unit of the mixing apparatus illustrated in FIG. 1. FIG. 3 is a cross-sectional view illustrating the main body (mixing unit) of the mixing apparatus illustrated in FIGS. 1 and 2.

  The mixing apparatus 10 includes a mixing unit G having a large number of protrusions P and a lid 20 that covers the mixing unit G.

  The mixing apparatus 10 has a main body M and a lid 20.

  The main body M has a substantially disc shape, and has a substantially plate-shaped central portion 3 and a mixing portion G on the front and back sides of the central portion 3.

  The mixing portion G is a substantially circular region formed inside the main body M, and is generally recessed in a region radially inward from the radially outer peripheral edge portion 1, and a recessed portion 2 is formed. The recess 2 functions as a flow path for water containing oxygen. In addition, a large number of pins (projections) P project inside the recess 2.

  Although not shown in FIG. 1, a similar mixing portion G is formed on the back side of the main body M as shown in FIG. That is, it has many pins P inside the recessed part 2 formed in the back surface side, and the back surface side of this mixing part G is also coat | covered with the cover part 20 which is not shown in FIG.

  Between the area where the pin P on the front side of the main body M is formed and the area where many pins (not shown) on the back side are formed (the center in the thickness direction of the disk), A central portion 3 is provided. That is, from the center part 3, many pins protrude in the surface side and back surface side of a mixing part.

  As illustrated in FIG. 2, a plurality of (four in the first embodiment) through-holes 4 are formed in the radially outer edge portion of the central portion 3. The through-hole 4 has a portion where a front side pin (upper side in FIG. 3) is formed and a rear side (lower side in FIG. 3) pin P (lower side in FIG. 3). Is communicated.

  The lid portion 20 has a substantially disk shape having an outer diameter substantially equal to that of the main body M, and is formed so as to be fitted so as to cover the mixing portion G on the front surface side and the mixing portion G on the back surface side of the main body M.

  In addition, an opening 21 is formed at the center of the lid part 20, and when the concave part 2 of the mixing part G is covered with the lid part 20, the opening 21 and the center O of the concave part (FIG. 2) Corresponding position.

  And the opening 21 of the cover part 20 and the through-hole 4 formed in the radial direction outer edge part of the center part 4 of the mixing part G function as a discharge hole or supply hole of the water containing oxygen. Specifically, for example, oxygen-containing water can be supplied to the mixing unit G from the opening 21 of the lid 20. Therefore, in this case, the opening 21 of the lid part 20 functions as a supply hole for supplying water containing oxygen to the mixing part G. And the water containing oxygen supplied to the mixing part G is a flow path while repeating contact with the pin P on the flow path (recess 2) communicating with the through hole 4 of the mixing part G from the opening 21 of the lid part 20. It passes through the (recessed portion 2), is discharged from the through hole 4 formed in the radially outer edge portion to the back surface side, and is supplied to the mixing portion G on the back surface side. Therefore, in this case, the through hole 4 functions as both a discharge hole and a supply hole for water containing oxygen. Then, the water containing oxygen supplied to the mixing part G on the back side passes through the flow path (recess 2) while repeating contact with the pin P on the flow path (recess 2) again, It is discharged from the opening 21 formed in the center. In this case, the opening 21 of the lid 20 disposed on the back surface side functions as a discharge hole for water containing oxygen.

  In addition, as a method of forming the mixing portion G, for example, a method of cutting and forming a disk-shaped metal (so-called “shaving”), a disk-shaped metal is cut to form the recess 2, and the recess 2 is provided with a large number of female screws (the same number as the pins), and a method of screwing a male threaded pin into this female screw, molding a hard ceramic material (clay-like flexible material), firing, Examples thereof include a method for making a hard ceramic, a method for cutting (cutting out) a resin (for example, a fluororesin), a method for injection molding a resin (for example, a fluororesin), and the like.

  As illustrated in FIG. 2, the center point of the recess 2 in which a large number of pins P <b> 1 to P <b> 8 are formed is indicated by the symbol O.

  Here, a symbol P representing a pin exemplifies some of the many pins, and illustrations of other pins are omitted.

  Here, the concave portion 2 has a circular planar shape, but may be formed in a regular polygon or the like.

  The distance from the center of the recess 2 to the inner wall surface of the outer peripheral edge 1, that is, the radius of the circle that is the planar shape of the recess 2 of the mixing part G is indicated by the symbol R in FIG. The radius R of the mixing portion can be appropriately designed in the range of, for example, about 10 mm to 100 mm in consideration of the pressure of the fluid to be supplied and the super vibration of the pin P.

  Next, an example of the arrangement of a large number of pins P1 to P8 formed in the recess 2 will be described with reference to FIGS.

  FIG. 4A is a front view illustrating the configuration of the main mixing unit of the mixing apparatus illustrated in FIGS. 1 and 2. FIG. 4B is a partially enlarged view of FIG.

  A large number of pins P1 to P8 are arranged at an equal pitch (circumferential interval) on eight concentric virtual circles having different diameters.

  In the concave portion 2 of the mixing portion G, annular rows S1 to S8 (shown in FIG. 4B) formed by a plurality of pins P arranged on concentric imaginary circles have an outer peripheral edge (radius) from the center of the mixing portion G. A plurality of rows are arranged in the direction outward. For this reason, the pins P are arranged radially from the center of the mixing portion G toward the outer peripheral edge.

  Although details will be described later, ten pins P1 are formed on a pitch circle having the smallest diameter (a pitch circle closest to the center point O). In addition, 24 pins P8 are formed on the pitch circle having the maximum diameter (the pitch circle most distant from the center point O).

  Many pins P <b> 1 to P <b> 8 are used when water containing oxygen supplied from the opening 21 of the lid 20 progresses radially outward from the center O of the recess 2, or penetrates the outer peripheral edge 1 of the recess 2. When water containing oxygen travels radially inward from the hole 4 toward the center O, the water containing oxygen is disposed so as to contact the pins P1 to P8 stepwise.

Specifically, the following criteria can be considered for the arrangement of the pins P1 to P8, for example. The numerical value illustrated below is an example of a design for reliably bringing water containing oxygen into contact with the pins P1 to P8 and efficiently mixing oxygen and water, and is not limited to this.
In FIG. 2, the large number of pins P <b> 1 to P <b> 8 are arranged on the circumference of a plurality (eight in the drawing) of concentric circles.

  The diameter D of many pins P1-P8 is shown by the following formula, for example.

0.004R ≦ D ≦ 0.089R
Ten pins P1 closest to the center point O are arranged at equal intervals on the circumference of the pitch circle centered on the point O.

  The radial dimension φ1 of the pitch circle in which ten pins P1 are arranged on the circumference is expressed by the following equation.

0.13R ≦ φ1 ≦ 0.17R
For example, when R = 45 mm, φ1 = 7 mm. The diameter D1 of the pin P1 is, for example, 2.0 mm.

  The pins P2 adjacent to the outer side in the radial direction of the pin P1 are arranged at equal intervals on the circumference of a circle of a radial dimension φ2 (> φ1) (circle centered at the point O) represented by the following formula. ing.

0.17R ≦ φ2 ≦ 0.23R
For example, when R = 45 mm, φ2 = 9 mm. The diameter D2 of the pin P2 is, for example, 2.5 mm.

  24 pins P3 adjacent to the outer side in the radial direction of the pin P2 are arranged at equal intervals on the circumference of a concentric circle having a radial dimension φ3 (> φ2) with the point O as the center. The radial dimension φ3 is expressed by the following equation.

0.33R ≦ φ3 ≦ 0.38R
For example, when R = 45 mm, φ3 = 16 mm. And the diameter D3 of the pin P3 is 4.0 mm, for example.

  In the first embodiment, the diameters of the pins P4 to P8 located in the radially outward region from the pin P3 are equal to the diameter D3 of the pin P3.

  24 pins P4 adjacent to the outer side in the radial direction of the pin P3 are arranged at equal intervals on the circumference of a concentric circle having a radial dimension φ4 (> φ3) with the point O as the center. The radial dimension φ4 is expressed by the following equation.

0.44R ≦ φ4 ≦ 0.49R
For example, when R = 45 mm, φ4 = 21 mm.

  24 pins P5 adjacent to the outer side in the radial direction of the pin P4 are arranged at equal intervals around the point O on the circumference of a concentric circle having a radial dimension φ5 (> φ4). The radial dimension φ5 is expressed by the following equation.

0.57R ≦ φ5 ≦ 0.63R
For example, when R = 45 mm, φ5 = 27 mm.

  24 pins P6 adjacent to the outer side of the pin P5 in the radial direction are arranged at equal intervals on the circumference of a concentric circle having a radial dimension φ6 (> φ5) with the point O as the center. The radial dimension Rr6 is expressed by the following equation.

0.66R ≦ φ6 ≦ 0.72R
For example, when R = 45 mm, φ6 = 31 mm.

  24 pins P7 adjacent to the outer side in the radial direction of the pin P6 are arranged at equal intervals on the circumference of a concentric circle having a radial dimension φ7 (> φ6) with the point O as the center. The radial dimension φ7 is expressed by the following formula.

0.8R ≦ φ7 ≦ 0.85R
For example, when R = 45 mm, φ7 = 37 mm.

  24 pins P8 arranged radially outward are arranged at equal intervals on the circumference of a concentric circle having a radial dimension φ8 (> φ7) with the point O as the center. The radial dimension φ8 is expressed by the following equation.

0.91R ≦ φ8 ≦ 0.96R
For example, when R = 45 mm, φ8 = 42 mm.

  And in order for the water containing oxygen to repeat a contact with the pins P1-P8 in steps, as illustrated in FIG. 2, FIG. 4 (A) (B), the center of the pins P1-P8 and the recess 2 A straight line (a straight line extending in the radial direction or a straight line extending radially) connecting the center O connects the center of the pin P1 to P8 adjacent to the inside in the radial direction and the center O of the recess 2. It is preferable to arrange so that it does not coincide with the straight line.

  That is, it is preferable that the centers of the pins P1 to P8 and the centers of the pins adjacent to the inner side in the radial direction of the pins P1 to P8 be arranged so as to be deviated (displaced) in the circumferential direction of the recess 2. . For example, in FIGS. 2, 4A, and 4B, the center of the pin P5 and the center of the pin P4 adjacent to the inner side in the radial direction of the pin P5 are deviated in the circumferential direction of the recess 2 ( Is out of alignment). Therefore, the straight line connecting the center of the pin P5 and the center O does not match the straight line connecting the center of the pin P4 and the center O.

  Furthermore, in other words, as illustrated in FIG. 4B, for example, when the pins in the annular row S6 to S8 are taken as an example, the center of two adjacent pins P7 among the plurality of pins P7 in the annular row S7. And at least pins P6 and P8 of other annular rows S6 and S8 that are adjacent to each other in the radial direction of the mixing part G in a region surrounded by two straight lines T1 and T2 that connect the center of the mixing part G. Is preferred. In the flow path (recess 2), such an array of pins is continuously formed.

  For example, such pin arrangement includes oxygen supplied by being pressurized to a predetermined pressure (for example, 0.1 MPa) or more by a pressurizing means as schematically illustrated by an arrow in FIG. The water passes between the adjacent pins in the annular row (for example, S6) with contact with the pins, and further contacts the pins of the other adjacent annular row (for example, S7). And it passes between adjacent pins again, and also contacts with the pin of other adjacent annular rows (for example, S8). Thus, the water containing oxygen flows in the flow path (recess 2) between the vicinity of the center (near the supply hole) and the vicinity of the outer periphery (near the discharge hole) while repeating contact with the protruding pins. At this time, the plurality of pins P vibrate in the ultrasonic range due to collision with water containing oxygen. Such super vibration of the pin P causes cavitation to occur in water containing oxygen, and the cavitation can effectively and uniformly disperse oxygen and water to promote mixing.

  1, 2, 3, 4 (A) and (B), the pin arrangement is “when oxygen-containing water proceeds radially outward from the center O of the recess 2, or When water containing oxygen progresses radially inward from the outer peripheral edge 1 of the recess 2 toward the center O, the water containing oxygen contacts the pin P stepwise, making the oxygen and water effective and homogeneous. It is an example for making it disperse | distribute to, and it does not specifically limit to this arrangement | positioning.

  FIG. 5 is a schematic view illustrating an embodiment of a mixing unit including a mixing device.

  The mixing unit 100 illustrated in FIG. 5 is configured by housing the mixing device 10 (main body M and lid 20) in casings 5 (supply-side casing) and 6 (discharge-side casing). The supply-side casing 5 and the discharge-side casing 6 are connected so as to maintain airtightness by known means.

  A supply pipe 7 is provided in the supply-side casing 5, and a discharge pipe 8 is provided in the discharge-side casing 6.

  The supply pipe 7 communicates with the opening 21 of the supply-side lid portion 20 (upper lid portion in FIG. 5) via the first through portion 71. The first penetrating portion 71 is also formed in the supply-side casing 5 in which the supply pipe 7 is provided.

  The discharge pipe 8 communicates with the opening 21 of the lid 20 on the discharge side (the lower lid in FIG. 5) via the second penetrating portion 81. The second penetrating portion 81 is also formed in the discharge-side casing 6 in which the discharge pipe 8 is provided.

  In the mixing unit 100 shown in FIG. 5, oxygen and water to be mixed are supplied to the front side shown in FIGS. 1 and 2 through the supply pipe 7, the first through portion 71, and the opening 21 (supply hole) of the lid portion 20. 3 in the vicinity of the center point O of the concave portion 2 (upper concave portion 2 in FIG. 3; indicated by reference numeral A in FIG. 5).

  The water containing the oxygen that flows in flows toward the outside in the radial direction of the recess 2, and at that time, the oxygen is homogeneously dispersed in the water by being brought into contact with the numerous pins P <b> 1 to P <b> 8, thereby promoting the mixing. .

  The water containing oxygen flowing outward in the radial direction passes through the through-hole 4 (discharge hole, supply hole) of the recess 2 illustrated in FIG. 2, and the recess 2 on the back side (not shown in FIGS. 1 and 2) (FIG. 3). The lower concave portion 2 in FIG. 5 (indicated by reference numeral B in FIG. 5) flows into the radially outer edge.

  The water containing oxygen that flows into the outer edge 1 side of the recess 2 on the back side flows radially inward in the recess 2 toward the center O. Also in this case, the water containing oxygen is efficiently mixed in contact with a large number of pins P1 to P8.

  The water containing oxygen that has reached the center O of the recess 2 on the back side is in a mixed state in which oxygen and water are kneaded in a high dimension, and the opening 21 (discharge hole, Supply hole) and the second penetrating portion 81 to be discharged from the discharge pipe 8 and sent to a water tank (not shown) via, for example, an appropriate storage unit.

  In FIG. 5, the mixing device 10 is in a state in which the lid portion 20 is housed in close contact with the front and back surfaces (upper and lower end surfaces) of the main body M.

  FIG. 5 includes a one-module mixing apparatus 10 composed of one main body M and two lids 20. Even in this one-module mixing apparatus 10, contact and dispersion of oxygen and water are efficient. To be done.

  FIG. 6 is an assembly diagram illustrating an embodiment of a mixing apparatus in the oxygen water production system of the present invention.

  In FIG. 5, the single mixing device 10 is accommodated in the casings 5 and 6, but in the mixing unit 100 </ b> A illustrated in FIG. 6, two mixing devices 10 </ b> A and 10 </ b> B are accommodated in the casing 56.

  In FIG. 6, in order to clarify the flow of water containing oxygen, the supply pipe 7, the discharge pipe 8, and the casing 56 are shown separately.

  The supply pipe 7 is integrally connected to the first lid portion 20A at the center of one surface (the upper surface in the drawing) of the first lid portion 20A.

  A through hole (supply hole) 7A that penetrates from the end of the supply pipe 7 to the other surface (the lower surface in the drawing) of the first lid portion 20A is provided.

  The discharge pipe 8 is integrally connected to the third lid portion 20C at the center of one surface (the lower surface in the drawing) of the third lid portion 20C.

  A through-hole (discharge hole) 8A that penetrates from the end of the discharge pipe 8 to the other surface (the upper surface in the drawing) of the third lid portion 20C is provided.

  As illustrated in FIGS. 1 and 2, the mixing apparatuses 10 </ b> A and 10 </ b> B have a mixing unit on the front surface side and the back surface side of the central portion.

  As illustrated in FIG. 6, the water containing oxygen passes through the supply pipe 7 and the through hole (supply hole) 7 </ b> A of the first lid portion 20 </ b> A. Flows into the center of Then, when moving radially outward from the center of the recess, the pin P (not shown) is brought into contact, and mixing of oxygen and water is promoted. The mixed oxygen and water are discharged from a through hole (not shown) located at a radially outer edge of a recess (not shown), and at the back side (lower side) of the first mixing apparatus 10A. The mixing portion (for example, the mixing portion on the side not shown in FIGS. 1 and 2) is supplied to the outer peripheral edge portion (not shown) of the concave portion. Therefore, in this case, the through hole functions as an oxygen and water discharge hole, and also functions as an oxygen and water supply hole. Then, it flows inward in the radial direction of the recess and comes into contact with the pin P to further promote mixing of oxygen and water.

  The water containing oxygen that has reached the center of the concave portion (not shown) of the mixing portion on the back side (lower side) of the first mixing apparatus 10A passes through the opening (supply hole) 21B of the second lid portion 20B. Then, it is supplied to the center of the concave portion (not shown) of the mixing portion on the surface side (upper side) of the second mixing device 20B. When oxygen and water flow radially outward from the center of the recess, they come into contact with the pin P (not shown in FIG. 6) to promote mixing of oxygen and water. Then, the mixed oxygen and water flow from the radially outer edge (not shown) of the recess to the outer peripheral edge (not shown) of the recess on the back side (lower side) of the second mixing device 10B. Omitted). Furthermore, the mixed oxygen and water flow inward in the radial direction of the recess, and come into contact with the pin P again, thereby further promoting the mixing of oxygen and water.

  Water containing oxygen that has reached the center of the concave portion (not shown) of the mixing portion on the back surface side (lower side) of the second mixing device 10B is discharged through the through hole 8A of the third lid portion 20C. It flows through the pipe 8.

  FIG. 7 is an assembly diagram illustrating an embodiment of a mixing apparatus in the fish shellfish oxygen water production system of the present invention.

  The mixing unit 100B illustrated in FIG. 7 accommodates a larger number (four stages) of mixing apparatuses 10A to 10D in the casing.

  In FIG. 7, oxygen and water supplied via the supply pipe 7 are shown as the opening 12D of the first lid 20D, the front and back of the first mixing device 10A (the side shown in FIGS. 1 and 2). The unmixed side), the opening 21E of the second lid portion 20E, the front and back mixing portion of the second mixing device 10B, the opening 21F of the third lid portion 20F, and the front and back of the third mixing device 10C. It is discharged from the discharge pipe 8 via the mixing portion, the opening 21G of the fourth lid portion 20G, the front and back mixing portions in the fourth mixing apparatus 10D, and the opening 21H of the fifth lid portion 20H.

  And when oxygen and water pass through the front and back mixing parts in the first to fourth mixing apparatuses 10A to 10D, water containing oxygen and the pin P continuously contact with each other, and oxygen and Water mixing is ensured and efficient. Since the first to fourth mixing devices 10A to 10D are connected in series, more efficient mixing is possible.

  FIG. 8 is a schematic view illustrating an embodiment of the fish shellfish oxygen water / oxygen water production system of the present invention.

  The oxygen water production system 200 includes a mixing unit 100 (for example, 100A and 100B illustrated in FIGS. 6 and 7) including a mixing device (not shown), a material storage tank 110, and a high-pressure pump (pressurizing means) 120. And a material transfer line L with a three-way valve V3 interposed therebetween.

  The material transfer line L includes a line L1, a line L2, a line L3, a line L4, and a return line Lb.

  Line L1 connects material storage tank 110 and high-pressure pump 120, line L2 connects high-pressure pump 120 and mixing unit 100, and line L3 connects mixing unit 100 and three-way valve V3. The line L3 is branched by a three-way valve V3 into a line L4 and a return line Lb.

  The three-way valve V3 connects the line L3 and the line L4 when supplying oxygen water mixed by a mixing device (not shown) included in the mixing unit 100 to a supply destination (next process). On the other hand, when it is desired to temporarily stop the supply of the material, the line L3 and the return line Lb are communicated, and the oxygen water discharged from the mixing unit 100 can be returned to the material reservoir 110 and circulated. .

  In the material reservoir 110, for example, water to be mixed (seawater / freshwater) and oxygen can be stored. In the material reservoir 110, water and oxygen may be completely separated at the stage where the material reservoir 110 is stored.

  In the oxygen water production system 200, the discharge pressure of the high-pressure pump 120 as the pressurizing means can be set to 0.1 MPa or more, for example.

  Inventor's experiment has confirmed that if the composite material is supplied to the supply pipe 7 of the mixing unit 100 at a pressure of 0.1 MPa or more, sufficient mixing is performed.

  Further, according to the measurement by the inventors, it has been found that the pressure loss of the oxygen water production unit 100 is suppressed to about 10% to 20% of the discharge pressure of the high pressure pump 120.

  The oxygen water production system 200 can include, for example, a cooling device. The pins of the mixing part of the mixing device of the mixing unit 100 can cause cavitation in the water containing oxygen by super-vibration in contact with the water containing oxygen supplied by the high-pressure pump 120. Thereby, oxygen and water are uniformly dispersed, and oxygen is dissolved and dispersed in water. At this time, when oxygen water is heated by cavitation, a cooling process by a cooling device can be performed. As the cooling device, for example, a cooling tank or the like for cooling the entire mixing unit 100 by submerging it (so-called “simmering”) can be exemplified.

  The oxygen water for fish shells manufactured by such a manufacturing system 200 for oxygen water for fish shells can be suitably used for breeding and transporting fish shellfish. Moreover, it can be used as oxygen ice for fish and shellfish transportation by freezing this oxygen water for fish and shellfish. For example, by transporting fish and shellfish in a box filled with oxygen ice for transporting fish and shellfish, it can be cooled, and a large amount of oxygen is generated when the ice melts. Therefore, it can be transported in a state where the freshness of the seafood is well maintained. According to the oxygen ice for transporting fish and shellfish of the present invention, skin respiration such as octopus and squid can be promoted, so that it can be particularly preferably used.

  FIG. 9 is a schematic view illustrating the configuration of the production system of oxygen water for fish and shellfish of the present invention.

  9 differs from the fish shell oxygen water production system 200 shown in FIG. 8 in that the material storage tank 110 is replaced with a water storage tank 110A, and a gas-liquid mixing device 130 is connected to the line L1. And a gas-liquid mixing rate adjusting mechanism 140 is arranged in the line L2.

  Here, the gas-liquid mixing device 130 is of a type that sucks oxygen using the negative pressure of the line L1. Here, if the pressure on the oxygen side is increased to mix water and oxygen from the water storage tank, the high-pressure pump may be damaged. On the other hand, in the experiment of the inventor, it was confirmed that the possibility of damaging the high-pressure pump 120 would be extremely low if a gas-liquid mixing device 130 of a type that sucks oxygen by negative pressure (type shown in FIG. 9) was used. Has been.

  The gas-liquid mixing device 130 is connected to the oxygen container 150, and the oxygen in the oxygen container 150 is lined by the negative pressure of the line L1 (water is sucked by the high-pressure pump 120 and thus negative pressure is generated in the line L1). Aspirate to L1.

  In this fish shellfish oxygen water production system 202, oxygen and water flow in a mixing device (not shown) of the mixing unit 100, so that the water containing oxygen collides with the pin P, and the oxygen enters the water. Disperse and solubilize uniformly. As a result, the dissolved oxygen concentration in water becomes very high. Specifically, water capable of maintaining a state where the dissolved oxygen concentration is 25 ppm or more, preferably 35 ppm or more for a long time (for example, 35 days or more) can be produced.

  Further, in this fish shellfish oxygen water production system 202, for example, if a cooling storage tank (not shown) is connected to the line L4, the oxygen water generated by the mixing device of the mixing unit 100 is temporarily stored in the cooling storage tank. You can also. Further, the line L4 and a water tank for breeding fish and shellfish can be directly connected to supply oxygen water to the water tank.

  The oxygen water for fish and shellfish produced by such a system for producing oxygen water for fish and shellfish 202 can be suitably used for breeding fish and shellfish and transporting fish and shellfish. Moreover, it can be used as oxygen ice for fish and shellfish transportation by freezing this oxygen water for fish and shellfish. For example, by transporting fish and shellfish in a box filled with oxygen ice for transporting fish and shellfish, oxygen can be supplied to the fish and shellfish at the same time as cooling, so that the freshness of the fish and shellfish is maintained well. Can be transported.

  The gas-liquid mixing rate adjusting mechanism 140 is a mechanism for suppressing pulsation after the line L2, and is a mechanism for adjusting the oxygen content rate.

  In order to produce water having a high dissolved oxygen concentration, it is desirable to keep the oxygen content constant at the stage immediately before the supply to the mixing apparatus 10. However, when pulsation occurs in the water circulation system, it becomes difficult to keep the oxygen content constant.

  By providing the gas-liquid mixing rate adjusting mechanism 140, even if pulsation occurs in the water circulation system of the mixing unit 100 in FIG. 9, the pulsation can be suppressed and the oxygen content rate can be maintained constant.

  As for the gas-liquid mixing rate adjusting mechanism 140, two containers are shown in FIG. 9, but one may be used. Further, the shape of the container is not necessarily cylindrical.

  Although illustration is omitted, the arrangement of the gas-liquid mixing device 130 in the line L1 may be omitted, and the oxygen container 150 may be connected to the line L2 (the discharge side of the high-pressure pump) through the oxygen supply line.

  In that case, in order to mix oxygen into the line L2, a high pressure higher than the discharge pressure of the high-pressure pump 120 is required.

  9 can switch the three-way valve V3 to return the oxygen water discharged from the mixing unit 100 to the water storage tank 110A through the line Lb for circulation. Or it can supply to the next process (for example, water tank) as it is, without circulating oxygenated water for fishery products.

  For example, the oxygenated water for fishery products of the present invention produced in this way has a high dissolved oxygen concentration in a released atmosphere because oxygen is kneaded and mixed in water at a high level. In addition, the state where the dissolved oxygen concentration is 25 ppm or more lasts for 35 days or more. For this reason, oxygen can be reliably supplied to fish and shellfish, and can be used effectively for breeding seafood or transporting fish and shellfish.

  The oxygen water for fish shells and the production system thereof, the fish shell rearing device, the fish shell rearing method, the fish shell transport method, and the fish shell oxygen ice of the present invention are not limited to the above forms. For example, the radius, number, arrangement, etc. of the pins provided in the mixing device can be appropriately set according to the desired dissolved oxygen concentration. In addition, for example, in the form of the fish and shellfish breeding apparatus and breeding method of the present invention, feeding of food generally required in the breeding of fish and shellfish, feeding of a disinfectant, circulation of water by a circulation device, etc. It goes without saying that work and various devices related thereto are included.

  EXAMPLES Hereinafter, although an Example demonstrates this invention further in detail, this invention is not limited to these Examples at all.

<1> Comparative experiment 1 of dissolved oxygen concentration
Experiments were performed to confirm the characteristics of oxygen water for fish and shellfish produced by the system for producing oxygen water for fish and shellfish outlined in FIG.

  Specifically, using the mixing apparatus shown in FIGS. 10 to 13, oxygen water for fish and shellfish was produced by the production system shown in FIG. 9.

  The basic configuration of the mixing device in the production system for oxygen water for fish and shellfish is based on the configuration of the mixing device illustrated in FIG. 1, FIG. 2, etc. It is designed in a form suitable for this embodiment.

  As shown in FIGS. 10 and 11, the mixing apparatus used in Example 1 is designed such that the inner diameter R1 of the disk-shaped main body M is 28.0 mm and the outer diameter R2 is 30.0 mm. Further, the thickness of the main body M (the thickness of the portion other than the concave portion) W (shown in FIG. 12) is designed to be 5.0 mm.

  As shown in FIGS. 10-12, the pin P protrudes from the front and back of the recessed part 2 (center part 3), and the mixing part G is formed (The code | symbol of the pin P is attached | subjected only to one part and other The pin symbols are omitted for convenience). Specifically, the pin P has a cylindrical shape, and is an annular example in which 12 pins P are arranged on the virtual circle from the center of the concave portion 2 of the mixing portion G (reference numerals are omitted, FIG. 4). (See (B) etc.) are arranged in eight rows in the outer peripheral direction of the mixing part G. The diameter D1 of the pin P of the 1st, 2nd annular row outside the center of the recessed part 2 of the mixing part G is designed to be 0.5 mm. The diameter D2 of the pin P of the third annular row outside thereof is designed to be 1.0 mm. Further, the diameter D3 of the pin P in the fourth annular row outside thereof is designed to be 1.5 mm. Further, the diameter D4 of the pins of the fifth to eighth annular rows outside thereof is designed to be 2.0 mm. Each pin P is designed to have a height H (illustrated in FIG. 12) of 1.0 mm, which coincides with the height of the outer peripheral wall portion 11 (illustrated in FIG. 12) of the mixing portion G.

  The diameters d1 of the through holes 4 (discharge holes and supply holes) formed at four locations near the outer periphery of the mixing part G are designed to be 1.0 mm.

  Further, FIG. 13 is a perspective view showing the mixing device 10 formed by fitting the lid portion 20 to the mixing portion G on the front and back surfaces (upper and lower) of the main body M. The lid portion 20 is designed to have a diameter of 30.0 mm like the mixing portion G. Further, a circular opening 21 (supply hole, discharge hole) is formed in the center of the lid portion 20, and the diameter d2 of the opening 21 is designed to be 4.0 mm.

  The mixing device designed as described above is arranged in two layers in the vertical direction in the same way as illustrated in FIG. 7, and together with the pressurizing means (high pressure pump), gas-liquid mixing device, etc., oxygen water production A system (see FIG. 9) was constructed.

  In this production system for oxygen water for fish and shellfish, about 10 L of pure water and oxygen (pure oxygen is about 1.0 L / min) are mixed in the mixing device at a pressure of 0.3 Mpa by a high-pressure pump as a pressure means. And was subjected to circulation treatment for about 5 minutes (circulation amount 10 L / min) to produce oxygen water for fish and shellfish.

  14 and 15 are graphs showing changes over time in the dissolved oxygen concentration of oxygen water for fish and shellfish. For measurement of the dissolved oxygen concentration, a commercially available dissolved oxygen meter (manufactured by Central Science Co., Ltd .: toughness DO CGS type 5) was used.

  14 and 15, the vertical axis represents the dissolved oxygen concentration (unit: “ppm”), and the horizontal axis represents oxygen and water mixed by the mixing device 10 in the production system for oxygenated fish and shellfish. The elapsed time after the oxygen is solubilized and discharged (unit is “day”) is graduated.

  In FIG. 14, the plot of “black triangle” is the average value of the saturated dissolved oxygen concentration in 20 ° C. water.

  The curve of the plot of “Kuromaru” shows the case where the oxygen water for fish shells produced with the dissolved oxygen concentration of 35.62 ppm by the production system for oxygen water for fish shells of the present invention is stored in an open container (for example, a beaker). The time-dependent change of dissolved oxygen concentration in is shown.

  The curve of the plot of “Black Square” shows the container for the seawater oxygen water manufactured with the dissolved oxygen concentration of 35.63 ppm by the system for manufacturing oxygen water for fish shells of the present invention (open container closed with a lid) For example, a change with time of dissolved oxygen concentration when stored in a bottle closed with a lid) is shown.

  In FIG. 15, the plot of “black triangle” is the average value of the saturated dissolved oxygen concentration in 20 ° C. water.

  The curve of the plot of “Kuromaru” shows the case where the oxygen water for fish shells produced with the dissolved oxygen concentration of 50.96 ppm is stored in an open container (for example, a beaker) by the system for producing oxygen water for fish shells of the present invention. The time-dependent change of dissolved oxygen concentration in is shown.

  The curve of the plot of “black square” shows a container (with a lid closed with a lid) of oxygen water for fish and shellfish manufactured with a dissolved oxygen concentration of 50.96 ppm by the oxygen water manufacturing system for fish shells of the present invention. For example, a change with time of dissolved oxygen concentration when stored in a bottle closed with a lid) is shown.

  The curve of the plot of “x” shows the dissolved oxygen concentration when oxygen water produced by a conventional pressurization method (the dissolved oxygen concentration shown is 40 ppm) is opened for measuring dissolved oxygen. In the conventional pressurization method, a commercially available high-concentration oxygen dissolving device (Daiei Co., Ltd .: product name “Enzyme Fighter, OD-110 type”) is used, pure oxygen is fed into the tank of this device, and the internal pressure in the tank Was set to 0.1 to 0.5 Mpa, and oxygen and water were pressure-mixed.

  From FIG. 14 and FIG. 15, the oxygen water for fish and shellfish produced by the system for producing oxygen water for fish and shellfish of the present invention has a high dissolved oxygen concentration, and after mixing for a long time (35 days or more) in the released atmosphere. ), It was confirmed that the dissolved oxygen concentration (25 ppm or more) far exceeds the saturated dissolved oxygen concentration of water. On the other hand, in the product manufactured by the conventional pressurization method (oxygen water), even if the dissolved oxygen concentration at the time of pressurization is 40 ppm, the dissolved oxygen concentration is drastically reduced to 8 ppm to 9 ppm at the time of opening. It became no different from the saturated dissolved oxygen concentration of water (FIG. 15). That is, according to the production system for oxygen for fish and shellfish of the present invention, it was confirmed that oxygen water for fish and shellfish having a stable dissolved oxygen concentration that could not be realized by the prior art could be generated.

<2> Comparative experiment 2 of dissolved oxygen concentration
Furthermore, a comparative experiment was carried out between the oxygen water for fish shells of the present invention produced in the same manner as in the above <1> (sometimes described as oxygen water of the present invention) and commercially available oxygen water.

  Specifically, the lid of the container containing the oxygen water of the present invention produced by the same method as in the above <1> and the container containing the commercially available oxygen water (commercial products 1 to 4) are opened. The change in dissolved oxygen concentration in the released atmosphere was measured. For measurement of the dissolved oxygen concentration, a commercially available dissolved oxygen meter (manufactured by Central Science Co., Ltd .: toughness DO CGS type 5) was used.

  In addition, the commercial product 1 has a display of “dissolved oxygen amount of 120 ppm or more”, the commercial product 2 has a display of “12 times oxygen filling”, and the commercial products 3 and 4 have “dissolved oxygen amount of 40 ppm”. Was displayed.

  The results are shown in Table 1.

  It was confirmed that commercially available products 1 to 4 released oxygen into the atmosphere at the same time that the container was released, and the dissolved oxygen concentration drastically decreased (0 day). Thereafter, in commercial products 2 to 4, the concentration decreased to 8 ppm or less (saturated dissolved oxygen concentration) in 1 to 3 days after release. In addition, the commercially available product 1 also gradually decreased in dissolved oxygen concentration after release, and decreased to 7 ppm or less (saturated dissolved oxygen concentration) 10 days after release.

  On the other hand, the oxygen water for fish shells of the present invention had a high dissolved oxygen concentration of about 50 ppm immediately after release, and the dissolved oxygen concentration of 48.1 ppm was maintained even after 4 days. After that, although there was a gradual decrease in the dissolved oxygen concentration, it was confirmed that the dissolved oxygen concentration was maintained at 34.5 ppm even at 31 days after release.

  Therefore, the oxygen water for fish and shellfish of the present invention is in a mixed state in which oxygen and water are kneaded in a high dimension, and has completely different characteristics from conventional commercial products, and has a long period of time in a released atmosphere. It was confirmed that the state in which the dissolved oxygen concentration was high was maintained.

  In addition, about dissolved oxygen concentration, it is thought that it is based on difference in conditions, such as the quantity of oxygen mixed, water temperature, and the amount of water, that there are some differences in the time-dependent change shown in FIG. 14, FIG. 15, Table 1. In any case, it was confirmed that the oxygenated water for fishery products of the present invention maintained a state where the dissolved oxygen concentration was 25 ppm or more at room temperature in a released atmosphere for 35 days or more.

<3> Experiment 1 to confirm the effects on seafood
(1) The influence on the breeding of seafood by the oxygenated water for fish and shellfish of the present invention was examined.

  Example 1: Oxygen water for fish and shellfish produced by the same method as in the above <1> was placed in a 6 ton tank, and 50 rabbits were raised for 42 days while giving an appropriate amount of food. The survival rate was investigated.

Comparative Example 1: Techno Takatsuki Co., Ltd .; Oxygen water produced by the compressor aeration method using HP-200 (dissolved oxygen amount: about 9 to 10 ppm) was placed in a 6 t capacity water tank, and 50 carp were placed in this water tank. The mice were bred for 42 days while giving an appropriate amount of food, and the survival rate was examined.
(2) The results are shown in Tables 2 and 3.

  As shown in Table 2, when the salmon was raised using the oxygen water for fish and shellfish of the present invention (Example 1), 47 animals / 50 animals survived 42 days after the start of the breeding. (Survival rate = 94%).

  On the other hand, as shown in Table 3, in the case of the oxygen water of Comparative Example 1, 19/50 were alive at 42 days after the start of breeding (survival rate = 38%). ).

From the results of Table 2 and Table 3, according to the oxygen water for fish shells of the present invention, the state of the shark is well maintained and the survival period is extended by reliably supplying oxygen to the body of the shark. It was confirmed.
<4> Experiment 2 to confirm the effect on seafood
(1) The influence on the breeding of seafood by the oxygenated water for fish and shellfish of the present invention was examined.

  Example 2: Oxygen water produced by the same method as in the above <1> was put into a 1t capacity tank, and it was raised for 22 days while giving an appropriate amount of food to 130 red shellfish in this tank. Etc. were investigated.

  Comparative Example 2: Techno Takatsuki Co., Ltd .; Oxygen water produced by the compressor aeration method using HP-200 (dissolved oxygen amount: about 9 to 10 ppm) was put in a water tank with a capacity of 1 t, and 130 red shellfish were placed in this water tank. The mice were reared for 22 days while giving an appropriate amount of food, and the survival rate and the like were investigated.

In this water tank, 130 red shellfish were reared for 22 days while feeding an appropriate amount of food, and the survival rate was examined.
(2) The results are shown in Tables 4 and 5.

  As shown in Table 4, when red shellfish were raised using the oxygen water for fish shells of the present invention (Example 2), 118/130 animals survived on the 22nd day after the start of the breeding. (Survival rate = 90.8%).

  On the other hand, as shown in Table 5, in the case of the oxygen water of Comparative Example 2, it was 69/130 animals that survived 22 days after the start of breeding (survival rate = 53. 1%).

  From the results of Tables 4 and 5, it is confirmed that according to the oxygen water of the present invention, the state of the red shellfish is satisfactorily maintained and the survival time is extended by reliably supplying oxygen into the red shellfish body. It was done.

<5> Experiment 3 to confirm the effect on seafood
(1) The influence on the breeding of seafood by the oxygenated water for fish and shellfish of the present invention was examined.

  Example 3 Oxygen water for fish and shellfish produced by the same method as in the above <1> is placed in a 1 ton aquarium, and bred for 7 days while giving an appropriate amount of food to 300 clams in this aquarium. The survival rate was investigated.

Comparative Example 3: Techno Takatsuki Co., Ltd .: Oxygen water produced by the compressor aeration method using HP-200 (dissolved oxygen amount: about 9 to 10 ppm) was placed in a 1 t water tank, and 300 clams were placed in this water tank. The mice were bred for 7 days while giving an appropriate amount of food, and the survival rate was examined.
(2) The results are shown in Tables 6 and 7.

  As shown in Table 6, when the clams were reared using the oxygen water for fish and shellfish of the present invention (Example 2), 271/300 lived 7 days after the start of the rearing. (Survival rate = 90.3%).

  On the other hand, as shown in Table 7, in the case of the oxygen water of Comparative Example 2, 192/300 animals survived on the 7th day after the start of breeding (survival rate = 64. 0%).

From the results of Tables 6 and 7, according to the oxygen water for fish shells of the present invention, the state of lightness is maintained well and the survival time is extended by reliably supplying oxygen to the clam body. It was confirmed.
<6> Measurement of specific gravity Specific gravity was measured about the oxygen water for fish shells of this invention manufactured by the method similar to said <1>.

  Specifically, the room temperature is kept at 20 ° C., about 250 ml of oxygen water for fish and shellfish produced by the same method as in the above <6> is taken in an acrylic measuring cup, and the temperature is 20 ° C. with an alcohol thermometer. Then, the specific gravity of this oxygen water for fish and shellfish was measured with a buoyancy-type hydrometer (manufactured by Toa Keiki). By this measurement method, the specific gravity of oxygen water for fish and shellfish was measured 24 times in total, changing the measurement date (sample No. 1 to No. 24).

Table 8 shows the measurement results of the specific gravity of samples No. 1 to No. 24. The specific gravity is based on the density of water at 4 ° C. (g / cm ³ ). For example, the specific gravity of water at 20 ° C. is known to be 0.998230 (Chemical Handbook).

  For comparison, Table 3 shows the results of measurement of specific gravity under the same conditions for commercially available mineral water, commercially available hydrogen water, commercially available oxygen water and RO water (pure water through a reverse osmosis membrane).

  As shown in Table 9, the water containing conventional gas (hydrogen water, oxygen water) has a specific gravity that does not exceed 1.000. However, as shown in Table 8, the oxygen for fish and shellfish of the present invention is used. It was confirmed that the specific gravity of water increased from 1.004 to 1.007.

  This is because the oxygen water for fish and shellfish of the present invention is characterized by the pin shape, pin diameter, etc. of the mixing device used in the manufacturing process, so that various energies can be used for water and oxygen. In this way, cavitation due to pin super-vibration occurs, and water and oxygen are effectively and uniformly dispersed and kneaded in a high-dimensional state to break hydrogen bonds. This suggests that inclusion is occurring. Therefore, since the oxygen water for fish shells of the present invention can reliably supply oxygen to the fish shells, it can be effectively used for raising seafood or transporting fish shells.

1 outer periphery
DESCRIPTION OF SYMBOLS 2 Recessed part 3 Center part 4 Through-hole 5 Casing / supply side casing 6 Casing / discharge side casing 7 Supply pipe 8 Discharge pipe 10 Mixing device 20 Lid part 100 Oxygen water production system G Mixing part M Main body P, P1-P8 Pin

Claims (9)

  Oxygen water for fish and shellfish characterized in that a dissolved oxygen concentration of 25 ppm or more persists for 35 days or more in a released atmosphere.   The oxygen water for fish and shellfish according to claim 1, wherein the specific gravity is 1.004 to 1.007. The oxygenated water for fish and shellfish is manufactured by a manufacturing system including a mixing device having a disc-shaped mixing portion for mixing oxygen and water, and a pressurizing means,
The mixing part of the mixing device
A supply hole;
A discharge hole;
A flow path that connects the supply hole and the discharge hole, and a plurality of cylindrical pins that protrude from the flow path and super vibrate in contact with the supplied water,
A supply hole is disposed near the center of the mixing portion, a discharge hole near the outer periphery, or a discharge hole near the center, and a supply hole near the outer periphery.
Annular rows formed by a plurality of pins arranged on concentric virtual circles are arranged in a plurality of rows from the center of the mixing portion toward the outer peripheral edge, and the pins are arranged radially from the center of the mixing portion toward the outer peripheral edge. And
The pin has a diameter D
0.004R ≦ D ≦ 0.089R (R represents the radius of the mixing portion)
Including those that are
Oxygen-containing water is supplied from the supply hole to the flow channel by the pressurizing means, oxygen-containing water passes through the flow channel with contact with the pin, and the pin is super-vibrated to mix oxygen and water. The oxygen water for fish and shellfish according to claim 1, which is obtained by being discharged from the discharge hole.   A fish shell breeding method comprising breeding a fish shellfish in an aquarium containing oxygen water for fish shellfish according to any one of claims 1 to 3.   A method for transporting fish and shellfish, comprising transporting the fish and shellfish in oxygen water for fish and shellfish according to any one of claims 1 to 3. A system for producing oxygenated water for fish and shellfish, comprising a mixing device having a disk-shaped mixing unit for mixing oxygen and water, and a pressurizing means,
The mixing part of the mixing device
A supply hole;
A discharge hole;
A flow path that connects the supply hole and the discharge hole, and a plurality of cylindrical pins that protrude from the flow path and super vibrate in contact with the supplied water,
A supply hole is disposed near the center of the mixing portion, a discharge hole near the outer periphery, or a discharge hole near the center, and a supply hole near the outer periphery.
Annular rows formed by a plurality of pins arranged on concentric virtual circles are arranged in a plurality of rows from the center of the mixing portion toward the outer peripheral edge, and the pins are arranged radially from the center of the mixing portion toward the outer peripheral edge. And
The pin has a diameter D
0.004R ≦ D ≦ 0.089R (R represents the radius of the mixing portion)
Including those that are
Oxygen-containing water is supplied from the supply hole to the flow channel by the pressurizing means, oxygen-containing water passes through the flow channel with contact with the pin, and the pin is super-vibrated to mix oxygen and water. A system for producing oxygen water for fish and shellfish, characterized in that the oxygen water generated in this way is discharged from the discharge hole.   The system for producing oxygenated water for fish shellfish according to claim 6, wherein the pressurizing means can supply water containing oxygen at a pressure of 0.1 MPa or more.   A fish shell breeding apparatus comprising the oxygen water production system according to claim 6 or 7 and a water tank to which oxygen water produced by the oxygen water production system is supplied.   Oxygen ice for fish and shellfish obtained by freezing oxygen water for fish and shellfish according to any one of claims 1 to 3.