JPH11346591A - Method and apparatus for making live fish take bath containing medicine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method and apparatus for taking advantage of fish swimming by its own force, making fishes swim from a raising fish reserve to a water tank for immersing live fish in a bath containing a medicine and immersing the fishes in the bath, preventing/treating fish damage by diseases and microorganisms, then making the fishes swim to the raising fish reserve so as to extremely reduce an artificial operation in a process for immersing live fish in a bath containing a medicine and to prevent live fish from rubbed damage. SOLUTION: Fish preserves A and B in which fishes can live are connected underwater through a water channel to a medicine solution capable of preventing/treating damage by diseases and microorganisms of fishes stored in a hollow water tank. Fishes in the fish preserves A and B are made to swim through the water channel and moved to the medicine solution in the water tank 3 for immersing live fish in a bath containing a medicine, made to swim in the medicine solution for a fixed time and to swim in the water channel again and moved to the fish preserves A and B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and a device for bathing a live fish in medicine, and is used, for example, for the prevention and treatment of disease and pests of live fish such as yellowtail and blue puffer fish during cultivation.

[0002]

2. Description of the Related Art Parasites such as neo-venedenia may be parasitized on the body surface of cultured yellowtail, flounder, tiger pufferfish, Japanese aster, amberjack and the like. It is known that a freshwater bath or a medicinal bath containing hydrogen peroxide as a main component is effective for eliminating parasites on fish with the parasites. An example of this method is January 10, 1994. It is described as "Method of exterminating Hamachi's spider dams" on pages 116 to 117 of "Aquaculture" (published by Midori Shobo), Vol. A freshwater bath is also used to control pseudocaligus parasitism on the puffer fish.

[0003]

However, the above prior art has the following disadvantages. A, FIG. 11- (b)
The process of forming two small pieces on a cage and laying a sheet on one of the pieces is a human operation, and requires a complicated work in a place with poor scaffolding. (B) As shown in FIG. 11- (c), the step of putting the chemical in the sheet and the step of gradually narrowing the small portion and transferring the fish into the chemical are also human work, and require a lot of people. It is. In particular, the fish are abraded at this time, and cause disease later. C. The step of removing the sheet by removing the two small parts as shown in FIG. 11- (d) is also a manual operation. At this time, the fishing ground is polluted because the chemicals are poured into the sea. D. As described above, this work is disliked because the process is complicated, the muscle burden is high, and the work is a human work in a place with a poor scaffold. In addition, the fish are scratched, which causes the subsequent fish disease.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and utilizes the ability of fish to swim by their own power, thereby allowing fish to move from a breeding cage to an aquarium for medicine bathing and moving. After providing a medicinal bath in a bath water tub to prevent and treat pests and diseases of fish, we provide a method and a device for live fish bathing that allow fish to swim and move them to breeding cages. The aim is to reduce and prevent abrasions on live fish.

[0005]

According to the first aspect of the present invention, there is provided a medicament bathing method for live fish in which the fish is allowed to survive in the sea in a living cage and in a hollow medicament bath. A medicinal solution capable of preventing and treating pests and insect pests of the stored fish is connected by a waterway, and the fish in the fish cage is made to swim through the waterway, moved into the medicinal solution in the medicinal water tank, and allowed to swim in the medicinal solution for a required time. After that, the waterway is again swam and moved to the cage.

Further, the parasite control apparatus for live fish according to the present invention has an opening through which a fish solution having a lower specific gravity than seawater and containing a chemical solution capable of preventing and treating pests and diseases of fish can be passed through the bottom. The medical bath water tank is provided with a hollow medicine bath water tank whose opening is freely openable and closable means for retreating fish from the hollow part of the medicine bath water tank. It is characterized by being able to prevent and treat the pests and diseases of fish that enter the medicinal solution from the cage through the medicinal solution inside and the sea in the vial.

According to a third aspect of the present invention, there is provided a live fish parasite control apparatus, wherein a hollow chemical bath for storing a chemical solution capable of preventing and treating pests and diseases of fish is provided, and one end of the chemical bath solution is contained in the chemical bath water bath. A water channel forming member composed of a pipe which can be approached and the other end can be seen in the sea of the cage, a pressure reducing means capable of depressurizing the hollow portion of the water channel forming member, and the hollow portion of the water channel forming member being depressurized by the pressure reducing means. Evacuation means for retreating the fish from the medicinal bath tank through the formed water passage, and connecting the medicinal solution accommodated in the medicinal bath water tank and the inside of the fish cage in the water channel by the water passage, and the medicinal solution in the medicinal bath water tank. It is characterized in that fish can flow in and out of the sea in the cage and prevent and treat pests and diseases of fish entering the chemicals from the cage.

[0008]

According to the present invention, for example, in the example of the parasite control step, the parasite control solution contained in the hollow portion of the chemical bath is brought into contact with the seawater in which the fish can survive. Next, the fish in the cage in which the seawater is stored is moved by its own power and moved in the parasite-controlling solution in the aquarium. When the fish is bathed in the parasite control solution for an appropriate period of time, parasites parasitizing the body surface of the fish are released from the fish. Then, the parasite-killed fish is moved from the tank for medicine bath into a cage containing seawater by its own power and moved, thereby completing the parasite-killing operation.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited thereto.

[0010]

Embodiment 1 FIGS. 1 and 2 show a first embodiment of a method and an apparatus for bathing a live fish according to the present invention. The feature of the first embodiment is that freshwater capable of controlling parasites parasitic on the body surface of the fish contained in the seawater of the fish cage containing the fish and the hollow medical bath tank adjacent to the fish cage is provided. The lower part is connected in the sea, while darkening the cage, brightening the inside of the medicine tank and moving the fish in the cage into the freshwater in the medicine tank by swimming and swimming in the freshwater for an appropriate time to remove the parasite. After the fish are separated from the fish, the evacuation means is operated to darken the inside of the medicine bath, and at the same time, the cage is brightened, and the fish in the freshwater in the medicine bath is moved to the new cage by swimming.

In FIG. 1, a method and a device for bathing a live fish according to the first embodiment are shown in FIG. 1. The hollow main body 1 having a deck portion which is open at the top and which extends horizontally outward from an opening edge is provided by the deck portion. It is exposed in the air and floated on the sea. The body 1
A hole 1B and a hole 1C penetrate through the bottom of the side wall of each of them so as to face each other, and a stopper 1A protrudes from the center of the side wall. In addition, the distal ends of the water channel forming members 2 and 20, which are connected to the opening edges of the holes 1B and 1C of the main body 1 and are made of a transparent pipe made of a transparent plastic material, are brought into close proximity to the lower surface of the deck portion. Is held by Also,
A vertically movable operating rod 9 extending downward through the deck portion
Blocking member 8 capable of opening and closing holes 1B, 1C at the tips of B, 9C
B and 8C are fixed, and the blocking members 8B and 8C are moved up and down by the up and down movement of the operating rods 9B and 9C, so that the water channel of the fish can be opened and cut off.

A hollow medical bath tank 3 having a hole 3B opening to the top side and having a water bath inlet 3A at the bottom surface opposite to the hole 3B having an opening similar to the hole 3B. Is inserted into the hollow portion of the main body 1 while containing fresh water, is brought into contact with the stopper 1A, and is moved up and down by a driving device (not shown). In addition, the bottom surface of the water bath 3 for medical bath is formed in a mortar shape with the inlet 3A of the water bath for medical bath as a bottom. A “U” -shaped support member 7 is projected from the upper surface of the water bath 3, and the shaft 5 penetrates the horizontal surface of the support member 7 so that it can move up and down and stops at an arbitrary position in the axial direction. It is possible. A handle 6 is fixed to the upper end of the shaft 5 and a lid member 4 capable of closing the water inlet 3A for medicine bath in a watertight manner is connected to the lower end.

An operation display panel 12 mounted on the upper surface of the support member 7 is connected to a measuring instrument 10 which is put into the water via a cable 11, and the measuring instrument 10 measures the dissolved oxygen amount and the salt concentration in the water. The measured values of the dissolved oxygen amount and the salt concentration measured by the measuring device 10 can be displayed on the operation display panel 12. A container 13 is connected to an oxygen concentrator (not shown) and contains fresh water in which sufficient oxygen is dissolved. The fresh water in the container 13 is supplied via a pipe 14 by a pump 15 to a chemical bath. 3 so that it can be supplied to the water surface side of fresh water. In addition, the freshwater in the medical bath tank 3 is stored with the water level being higher than the seawater level. Further, it is connected to an oxygen concentrator (not shown) so that oxygen is sufficiently dissolved.

The operation of the first embodiment will be described with reference to FIGS. First, the end portions of the waterway forming members 2 and 20 are connected to the side walls of the cages A and B, and the hollow portions of the cages A and B and the hollow portion of the main body 1 are connected to each other through the openable openings of the cages A and B. Communicate with each other through a water channel formed in a hollow portion of the water channel forming members 2 and 20. Next, the handle 7 is operated to raise the lid member 4 to open the entrance 3A for the bath for medicine, so that the hamachi coming out of the fish cage A can pass through the entrance 3A. At this time, the seawater is heavier than the freshwater without stirring, so that the freshwater and the seawater do not mix, and the balance is established in a state where the lower surface of the freshwater and the upper surface of the seawater are in contact with each other. Subsequently, the operating rod 9B is operated to raise the blocking member 8B to open the hole 1B so that the fish can pass therethrough, and to cover the surfaces of the cages A and B with black sheets in a conventional manner. When the inside of B is darkened, sunlight enters through the hole 3B and a bright medicine bath tank 3
The yellowtail enters the freshwater through the water channel forming member 2, passes through the hole 1B, and enters the freshwater tank entrance 3A toward the freshwater.

When the hamachi swims in freshwater for 5 to 8 minutes, Benedenia, a parasite parasitizing on the body surface of the hamachi, dies and falls off the body of the hamachi. Next, the operating member 9B is operated to operate the blocking member 8B. Is lowered so as to block the fish from passing through the hole 1B, while operating the operating rod 9C to block the blocking member 8.
C is raised to open the hole 1C so that fish can pass therethrough, and the inside of the cage B is illuminated by a conventional method such as removing a black sheet from the surface of the cage B. On the other hand, the evacuation means (not shown) is operated to activate the hole. When the freshwater is darkened by appropriately covering 3B, the hamachi is exposed to sunlight and goes out of the entrance 3A of the aquarium for the medicine bath toward the bright cage, B, and the channel forming member 2 through the hole 1C.
After moving through the water channel formed at zero, all the hamachi finally enters the cage B.

After confirming that no hamachi remains by looking into the fresh water through the hole 3B, the handle 7 is operated to lower the lid member 4 so as to close the medicine bath tank inlet 3A in a watertight manner.
Next, the leading ends of the waterway forming members 2 and 20 are removed from the cages A and B, and the openings of the cages A and B are closed by appropriate means, and the leading ends of the waterway forming members 2 and 20 are brought close to the deck as shown in FIG. To prepare for the next eradication of hamachi in the cage.

Prior to the next eradication of hamachi in the cage, the handle 7 is operated to raise the cover member 4 to open the inlet 3A for the medicine bath to such an extent that the liquid can flow out.
Is operated to supply the fresh water in the container 13 to the water surface portion of the medicine bath tank 3 via the pipe 14 (preferably reducing the collision energy of the makeup water with the fresh water). Among the seawater that has entered with the withdrawal from the inside of the water tank 3, the seawater that does not mix with the fresh water but stays at the bottom of the medicine bath water tank 3 can be discharged out of the medicine bath water tank 3. At this time, the degree of discharge of seawater may be determined by checking the measured value of the salt concentration of the measuring device 10 shown on the operation display panel 12. When the salt concentration reaches an allowable range, the lid member 4 is lowered again to close the entrance 3A of the bath for medicine bath in a watertight manner, and the inside of the container 13 is kept at the same water level as the seawater surface or higher than the seawater surface. It is preferable to supply fresh water to the water bath 3 for medicine bath.

Alternatively, by raising the lid member 4 to open the medicine bath tank inlet 3A in the same manner as described above, and operating the drive unit (not shown) to raise the medicine bath tank 3, the gravity balance is lost and the medicine of Hamachi Of the seawater that has entered the bathtub 3 with the evacuation from the bathtub, the seawater that does not mix with fresh water but stays at the bottom of the bathtub 3 can be discharged out of the bathtub 3. Also in this case, the degree of discharge of seawater may be determined by checking the measured value of the salt concentration of the measuring device 10 shown on the operation display panel 12. When the salt concentration reaches an allowable range, the lid member 4 is lowered again to close the entrance 3A of the bath for medicine bath in a watertight manner, and the inside of the container 13 is kept at the same water level as the seawater surface or higher than the seawater surface. It is preferable to supply fresh water to the water bath 3 for medicine bath. In this way, since fresh water whose salt concentration is always equal to or lower than a certain value is stored in the aquarium 3, the parasites that infest the fish that have entered the fresh water surely die before the fish weaken. It has the effect of detaching from the fish.

If oxygen in the fresh water in the medicine bath 3 is abnormally consumed by a plurality of hamachi that have entered the medicine bath 3 even though the hamachi remains in the cage A, the operation display panel 12 displays the alarm. -Since a sound is emitted and the dissolved oxygen in the fresh water is displayed on the operation display panel 12, the communication port for the water passage forming member 2 of the fish cage A is closed by appropriate means to temporarily stop the hamachi drug. The entry into the bath tub 3 may be stopped. And, as described above, the medicine bath tank 3
What is necessary is just to move the hamachi to the cage B immediately after darkening the inside.

In the above embodiment, the water channel forming members 2 and 20 for forming water channels in the water and the bottom of the medical bath tank 3 for storing fresh water are connected via the main body 1, but this is not restrictive. Absent. That is, the water channel forming member 2 is connected to the bottom of the water bath 3 for medical bath so that the hollow portions communicate with each other, and the water channel forming member 2 is similarly appropriately separated from the water channel forming member 2.
0 may be connected.

Further, as shown in FIG.
A hole is formed in the upper portion and the bottom surface of the side wall, and the end of a water channel forming member 2B (preferably made of a transparent material) formed of a pipe made of a water-tight material is connected to the periphery of the hole in a water-tight manner. While connecting the water channel forming member 2 as in the embodiment, the hole on the bottom surface and the water bath inlet 41A for the medicine bath, which is hermetically sealed by the lid member 4, are connected by the water channel forming member 2A formed of a mesh pipe. Further, the water channel forming member 20 may be connected to the hole to which the water channel forming member 2B is connected or the water bath outlet 41B for the chemical bath penetrating the bottom surface separated from the water bath inlet 41A as in the above embodiment. By doing so, there is an effect that the degree of freedom in selecting the material of the waterway forming member 2 is widened and the connection work with the fish cage A is facilitated. In short, in order to minimize the mixing of seawater with fresh water as the eradication liquid, when storing a liquid having a specific gravity smaller than that of seawater in the chemical bath tank, the chemical bath tank inlet and the chemical bath tank outlet should be connected to the chemical bath tank. Any configuration may be used as long as it is disposed at the bottom of the.

[0022]

[Embodiment 2] Fig. 3 shows a second embodiment of the method and apparatus for bathing a live fish according to the present invention. The same parts as those shown in FIG. 1 used in the description of the first embodiment are denoted by the same reference numerals, and redundant description will be omitted.

The feature of the second embodiment is that it eliminates parasites that are parasitic on the body surface of the fish that is stored in the seawater of the fish cage that houses the fish and the hollow chemical bath that is adjacent to the fish cage. The upper part of the medicinal solution, which is a possible liquid and has a higher specific gravity than seawater, is connected in the sea, brightens the inside of the medicinal bath tank while darkening the cage, and swims and moves the fish in the cage into the medicinal solution in the medicinal bath tank. After allowing the parasites to separate from the fish by swimming in the drug solution for an appropriate period of time, the evacuation means is operated to darken the inside of the medicine bath tank, while brightening the living tank and swimming the fish in the drug solution in the medicine bath tank into the tank. The point is to move with.

In FIG. 3, the method and the apparatus for bathing live fish of the second embodiment have a deck which is open on the top side and extends horizontally outward from the edge of the opening, and is opened on the water surface side wall. A bath water tank inlet 31A and a medicine bath water tank outlet 31B opened on the water surface side of the side wall opposite to the inlet 31A are provided.
A water bath 31 for chemical bath containing a liquid solution diluted to% is exposed on the deck portion in the air and floated on the sea. In addition, the medicine bath tank inlet 31A and the water passage forming member 2 are connected to the medicine bath water tank outlet 31B and the water passage forming member 20, respectively, and the distal ends of the water passage forming members 2 and 20 are brought into close proximity to the lower surface of the deck portion, and by appropriate means. Is held.

A fish guide plate 22 having a substantially U-shaped cross section and made of transparent plastic is mounted on the upper part of the hollow portion of the medicine bath tank 31 and the lower surface of the fish guide plate 22 is connected to the entrance 3 of the medicine bath tank.
1A, located closer to the ground than the bathtub outlet 31B for the medicine bath. In addition, the operation display panel 12 attached to the deck section has the first
As in the embodiment, the measurement values of the dissolved oxygen amount and the salt concentration measured by the measuring device 10 can be displayed.

[0026] The deck section opposite to the deck section is connected to an oxygen concentrator (not shown), and a chemical containing hydrogen peroxide as a main component in which sufficient oxygen is dissolved is diluted to about 0.5% with seawater. A container 131 containing a chemical is attached, and the chemical in the container 131 can be supplied to the bottom layer of the chemical contained in the water bath 31 through the pipe 14 by the operation of the pump 15. The amount of the chemical solution in the chemical bath tank 31 is contained such that the water level substantially coincides with the lower edge of the chemical bath tank inlet 31A and the lower edge of the chemical bath tank 31B.
Further, it is connected to an oxygen concentrator (not shown) so that oxygen is sufficiently dissolved.

The operation of the second embodiment will be described with reference to FIG. In the same manner as in the first embodiment, the end portions of the waterway forming members 2 and 20 are connected to the side walls of the cages A and B, and the hollow portions of the cages A and B and the medicine bath are opened and closed through the openable portions of the cages A and B. The hollow portion of the water tank 31 is communicated with the hollow portion of the water channel forming members 2 and 20 via the water channel formed in the hollow portion. At this time, if the stirring is not performed, the chemical liquid is heavier than the seawater, so that the seawater and the chemical liquid do not mix.
The balance is maintained in a state where the lower edge A and the lower edge of the bathtub outlet 31B are in contact with each other. Next, as in the first embodiment, when the inside of the cages A and B is darkened by a conventional method such as covering the surfaces of the cages A and B with a black sheet, the sunlight enters through the ceiling opening and the bright medicine bath tank 31 is opened. The hamachi passes through the water channel forming member 2, passes through the entrance 31A for the medical bath, is guided by the fish guide plate 22, and enters the medical solution.

When the hamachi swims in the drug solution for 3 to 4 minutes, Benedenia, a parasite parasitic on the body surface of the hamachi, dies and falls off from the body of the hamachi. Is covered with a black sheet to darken the inside of the cage A and the medicine bath tank 31, while the black sheet is removed from the surface of the cage B to brighten the interior of the cage B. Aiming at B, it exits from the medicine bath aquarium outlet 31B, passes through the water channel formed in the water channel forming member 20, moves to the fish cage B, and finally all the hamachi enters the fish cage B. At this time, the amount of the chemical solution in the chemical bath tank 31 has been reduced, so that it is replenished.

The water bath 31 for medicine bath is opened from the opening that opens to the top side.
After confirming that no hamachi remains by looking into the liquid, the distal ends of the channel forming members 2 and 20 are removed from the cages A and B, and the openings of the cages A and B are closed by appropriate means. , 20 are brought close to the deck portion as shown in FIG. 1 and held by appropriate means to prepare for the removal of hamachi in the next cage. In addition, since the chemical solution in the chemical bath tank 31 is reused by adjusting the concentration of hydrogen peroxide, it is possible to minimize the pollution of the fishing ground and to minimize the consumption of the chemical solution. .

[0030]

[Embodiment 3] The feature of the third embodiment is that the seawater of the fish cage containing the fish and the fish contained in the hollow medicine bath aquarium which floats in the fish cage and can be moved up and down. The lower part of the freshwater that can control parasites that are parasitic on the body surface is connected in the sea, and while darkening the cage, the inside of the medicine tank is brightened and the fish in the cage are moved by swimming in the freshwater in the medicine tank. After allowing the parasites to separate from the fish by swimming in the medicinal solution for an appropriate period of time, the retreating means is operated to lower the moving element that moves up and down in the medicinal water tank, and the fish in the freshwater in the medicinal water tank is laid. The point is to swim and move.

As shown in FIG. 5, a method and an apparatus for controlling parasites on live fish according to the third embodiment are shown in FIG.
A is open, the ceiling is a hollow body made of a transparent plastic material, and the water bath 51 for medicine bath is vertically movable in a fish cage A for storing fish bred in the sea and extends outward from the lower surface of the water bath 51. A swimming range limiting member 53 and a medicine bath tank 51 are provided so that the gap between the tip and the cage A is made small so that fish bred in the cage A cannot pass therethrough. It is provided with a movable member 24 made of a transparent plastic material capable of closing the inlet 51A in a water-tight manner and means for vertically moving the medicine bath tank 51.

Reference numeral 14 denotes a pipe for supplying fresh water in which sufficient oxygen is dissolved against the internal pressure in the water bath 51 for chemical bath.
Reference numeral 6 denotes an operation rod connected to the moving element 24 and extending upward through the ceiling of the medicine bath tank 51 in a watertight manner, 27 denotes a chain connected to a crane (not shown), and 29 denotes a bath tank 51 for medicine.
A camera attached to the tip of the water bath 51 for penetrating the ceiling in a watertight manner and facing the inside of the bathtub 51 for medicine bath,
Reference numeral 28 denotes a light-shielding sheet that covers four rounds of the cage A.

The operation of the third embodiment is as follows. A chemical bath tank 51 filled with fresh water is lifted by a crane (not shown) via a chain 27 and moved above the living pens A. Lower into the sea. When the bathtub entrance 51A for the medicine bath overlooks the sea floor and the transparent ceiling sinks into the sea, the operation rod 26 is operated to gently raise the moving element 24, and the bathtub entrance 51A for the medicine bath is opened.
After opening A so that fish can pass, it is brought into contact with the ceiling. At this time, since the fresh water is filled in the medicine bath tank 51, the contact surface between the fresh water and the sea water is not so disturbed and the fresh water having a small specific gravity floats on the sea water, and the lower surface of the fresh water mass near the entrance 51A for the medicine bath tank. And the upper surface of seawater are connected, and fish can come and go.

The swimming range of the fish is reduced with the further subsidence of the bathtub 51 due to its own weight.
Since the sunlight is blocked by 8 and the surroundings are dark, the fish enters the fresh water in the bright medicine bath tank 51 through the medicine bath inlet 51A. (The opening of the medicine bath aquarium entrance 51A will narrow the swimming range of the fish while the medicine bath aquarium 51 continues to sink, and if the fish is performed at a depth with a sense of crisis, all the fish will enter the medicine bath aquarium in a short time. (Effectiveness is confirmed.) The invasion of fish into the medicine bath tank 51 is confirmed on a ship (not shown) via the surveillance camera cable 29, and after a predetermined time elapses while monitoring the state of the fish, the same parasitic effect as in the above embodiment. Since the insects are detached from the fish, the fish from which the parasites have been removed go out of the medicine bath water tank 51 by operating the operating rod 26 and lowering the moving element 24 while floating the medicine bath water tank 51. This has the effect that the fish will surely and quickly leave the aquarium. Thereafter, the medicine bath tank 51 is further raised and moved to a ship (not shown) to replenish the fresh water in the medicine bath tank so as to prepare for the next step of controlling parasites of fish in the fish cage.

In the above embodiment, the medicine bath tank 51 filled with fresh water is lowered into the sea in the living pens A, but the invention is not limited to this. That is, fresh water may be supplied into the hollow portion of the water bath for medical bath 51 after the water bath for medical bath 51 is immersed or during sinking or after sinking to a predetermined depth.

In the above embodiment, as a means for retreating the fish from the medicine bath tank 51, the contrast between the medicine bath tank 51 and the cage A and the lowering of the moving element 24 are used in combination. is not. That is, the medicine bath tank 5
The fish can also be ejected from the medicine bath tank 51 with an evacuation unit that merely makes a difference between the light and darkness of the fish cage A. At this time, when the movable element 24 is movable in the horizontal direction to open and close the opening, when the opening is opened in the sea, the contact surface between the fresh water and the sea water is further reduced, and the fresh water and the sea water are further reduced. Has the effect of suppressing mixing at the interface.

As means for driving fish into fresh water in the medicine bath tank 51, a movable element 78A which can float and float as shown in FIG. 7 may be used. At this time, the upper surface of the moving element may be a flat surface without being concave.

[0038]

[Fourth Embodiment] A feature of the fourth embodiment is that the seawater of a fish cage in which fish are contained and the fish contained in a hollow medical bath tank which is movable up and down in the fish cage and has an open top. The upper part of the drug solution, which is heavier than seawater, is connected in the sea as a liquid capable of controlling parasites that are parasitic on the body surface, and the bath for the medicine bath is raised as appropriate, and the fish in the cages swim and move into the drug solution in the bath for the medicine bath. After allowing the parasites to separate from the fish by swimming in the medicinal solution for an appropriate period of time, the retreating means is operated to raise the moving element that moves up and down in the medicinal water tank, and the fish in the medicinal liquid in the medicinal water tank is caught. The point is to swim and move.

As shown in FIG. 6, a method and an apparatus for controlling live fish parasites according to the fourth embodiment are shown in FIG. 6. A hollow water bath 61 for medicine bath having an open top and a hinge (not shown) provided on the upper edge of the water bath 61. A swimming range restricting member 63 and a water bath 61 for medicine bath, which are pivotally connected to each other via members so that a gap between the tip and the cage A is small so that fish bred in the cage A cannot pass through.
A movable element 34 is provided which can move up and down inside and can close the opening of the water bath for medicine bath.

The above operation is not shown in a chemical bath tank 61 filled with a chemical solution obtained by diluting a chemical containing hydrogen peroxide as a main component to about 0.5% with seawater and having an opening covered by a moving element 34. After being lifted by a crane via a chain and moved above the cage A, it is settled at the bottom of the cage A (indicated by a two-dot chain line in the figure), and the fish is brought to the water surface side from the chemical bath tank 61. The moving range limiting member 6 is moved by a suitable means because it moves.
When the movable element 34 is lowered when the 3 is expanded and floated appropriately, and the water bath 61 for medicine bath is still floated, the fish enters the liquid medicine in the water bath 61 for medicine bath. After a predetermined time has passed while monitoring the state of the fish in the same manner as described above, the parasite dies and separates from the fish in the same manner as in the above embodiment, so that the medicinal solution is appropriately leaked from the medicinal bath tank as much as possible while sinking the medicinal bath tank 61. When the moving element 34 is raised by the means, the fish from which the parasites have been removed are taken out of the medicine bath tank 61.
After the medicine bath tank 51 is further lowered, the swim range limiting member 63 is closed and raised again, and moved to a ship (not shown) to prepare for the next step of exterminating parasites of fish in the cage.

[0041]

[Embodiment 5] The feature of the fifth embodiment is that a hollow medicine containing a liquid capable of exterminating parasites parasitic on the surface of fish and the body of a fish cage that can breed fish and capable of decompression is provided. After the liquid in the bath tank is connected with a hollow water channel forming member disposed in the air, the pressure in the hollow portion of the hollow body or / and the hollow portion of the water channel forming member is reduced, and a water channel is formed in the hollow portion. After the fish in the fish cage are made to swim through the waterway formed in the waterway forming member and moved into the tank for medicine bath, and the parasite is separated from the fish by swimming in the liquid for an appropriate period of time. The point is that the waterway is swam again and moved to the cage. As described above, when the internal pressure of the chemical bath for accommodating the eradication liquid can be reduced, the liquid level of the eradication liquid in the chemical bath can be higher than the sea level, so that the use range can be greatly expanded.

As shown in FIGS. 7 and 8, the method and the apparatus for controlling parasites of live fish according to the fifth embodiment have a box-shaped hollow body with an opening on the top side for illuminating the inside of the hollow. A ceiling device is provided with a lighting device (not shown), which stores fresh water sufficient for dissolved oxygen, and has a detachable lid 72 for sealing the top opening. A net-shaped pipe 73 having a mesh that is spirally wound around the bottom of the medical bath tank 71 and has a mesh whose central part is larger than the parasite length and smaller than the fish length is attached, and one end is bred with live fish. The live fish, which is connected to a hollow waterway forming member 74A made of a light-tight watertight material facing a living cage A having a bottomed hollow body with an open top, and the other end of which has been cleaned of parasites Is connected to a hollow water channel forming member 74B made of a light-tight watertight material facing the living cage B which is a bottomed hollow body with an open top side to receive the water, and the living cage A and the living cage B are connected to the water channel forming member 74A. 74
B, communication is possible via a net-like pipe 73.
The channel forming members 74A and 74B are penetrated through the side wall of the chemical bath tank 71 in a watertight manner. The lid 75 is attached to a shaft 76 attached to the distal end of the channel forming members 74A, 74B.
Is fixed to the tip of an L-shaped link 77 pivotally connected to the water passage forming members 74A and 74B so as to be able to close water-tightly. In addition, movers 78A and 78B
The upper surface has a concave shape, and is allowed to float in the cages A and B, and is submerged in the cages A and B.

The inside of the hollow portion formed by the lid 72 and the chemical bath tank 71 can be depressurized by a vacuum pump 85 via a pipe 81, and the pipe 79 can also be used to remove the liquid from the liquid storage tank (not shown) to the chemical bath tank 71. When the water level of the eradication liquid which is mounted above the water channel forming members 74A and 74B in the hollow portion of the water bath 71 for chemical bath and enters the water bath 71 for chemical bath reaches a certain level, the electric power is removed. Float type level switch 82 for generating a signal
The solenoid valve 80 is engaged with the solenoid valve 80 so as to open and close the hollow portion of the pipe 79 by an electric signal from the float type level switch 82. The pressure switch 83 can measure the pressure in the hollow portion formed by the lid 72 and the water bath 71 for medicine via a pipe 81 and is engaged with a vacuum pump 85. The trap 84 is connected to a vacuum pump 85 via a pipe 81 so that water and solids sucked through the pipe 81 are not sucked by the vacuum pump 85. The photoelectric sensor-88 has a water channel forming member 7 at its tip so that it can detect fish.
When the sensor-88 detects a live fish, a timer (not shown) is operated to actuate the driving means (not shown) via the controller to rotate the link 77 when the sensor-88 detects a live fish. It moves to open the lid 75 at the end of the waterway forming member 74B facing the cage B. An air venting solenoid valve 89 is attached to the highest point of the water channel forming members 74A and 74B via a pipe 86.

The operation of the fifth embodiment is as follows. When fresh water is supplied from the pipe 79 into the chemical bath 71 with the lid 75 closed, the net-like pipe 73 is submerged in fresh water, and when the water level rises further, a channel is formed. The hollow portions of the members 74A and 74B are also filled with fresh water. When the water level further rises, the level switch 82 detects the level of fresh water and acts on the solenoid valve 80 to shut off the pipe 79 to stop the supply of fresh water, and also acts on the solenoid valve 89 to shut off the pipe 86 and cut off the pipe 86. The hollow portions of 74A and 74B are shielded from the atmosphere, and furthermore, the vacuum pump 85 is operated to reduce the pressure in the hollow portion of the chemical bath 71 through the pipe 81.

When the internal pressure of the hollow portion in the medical bath tank 71 is reduced to a preset pressure, the pressure is reduced by a pressure switch 8.
3 detects and acts on a driving means (not shown) to
The lid 77 at the distal end of the channel forming member 74B is opened by rotating the link 77 at the distal end of the channel forming member 74A. Thereby, the fresh water in the waterway forming member 74A is caused to fall by gravity and the water pressure is applied to the waterway forming member 74A by the atmospheric pressure.
The freshwater is held in the waterway forming member 74A by balancing the force for pushing the seawater into the water (the freshwater in the waterway forming member 74B is also held in the same way). The hollow portion of the mesh pipe 73 submerged in fresh water inside is connected by a fresh water channel formed in a water channel forming member 74A disposed in the air. (When the lid 75 at the end of the channel forming member 74B is opened, the cage A and the cage B are connected to the channel forming members 74A and 74B via the chemical bath tank 71 by a fresh water channel, and the fish is moved from the container A to the channel forming members 74A and 74B. The environment where you can swim and move to the cage B through

Next, the lighting device is turned on to turn on the medicine bath tank 71.
When the inside is brightened and the moving element 78A is levitated by appropriate means, the swimming range is narrowed, so that the fish swim by their own power and enter the waterway forming member 74A, and are detected by the photoelectric sensor 88 to form a spiral. After passing through the net-like pipe 73, the water reaches the water channel forming member 74B. When the photoelectric sensor 88 detects the leading fish, a timer (not shown) is operated, and when a preset time is reached, a drive means (not shown) is actuated to rotate the link 77 to cover the tip of the waterway forming member 74B facing the living cage B. 75 is opened. Further, when the photoelectric sensor 88 detects the number of fish registered in advance in a controller (not shown), the cover 75 at the end of the waterway forming member 74A facing the living cage A is acted on by driving a driving means (not shown) to rotate the link 77. Closed. As a result, a predetermined number of fish intermittently bathe in freshwater in the medicine bath tank 71 from the fish cage A through the waterway forming member 74A and further through the waterway forming member 74B to remove fish from which parasites have been eliminated. Move to B. Each time the fish enters the freshwater, the freshwater is pushed out into the sea from the tip of the channel forming member. Therefore, after the photoelectric sensor 88 detects the leading fish, the solenoid valve 80 is opened and the freshwater is discharged from the pipe 79 into the chemical bath tank 71. Good to supply.

[0047]

Sixth Embodiment FIG. 9 shows a sixth embodiment of the method and the apparatus for controlling parasites in live fish according to the present invention. In addition,
The same parts as those shown in FIG. 7 used in the description of the fifth embodiment are denoted by the same reference numerals, and duplicate description will be omitted.

The feature of the sixth embodiment is that the aquarium can hold fish in the air and the liquid that can eliminate parasites that are parasitic on the body surface of the fish contained in the hollow aquarium tank. After being connected by a hollow water channel forming member disposed in the, the hollow portion of the water channel forming member is decompressed to form a water channel in the hollow portion so that fish in the sea and in the liquid can come and go, After the fish in the fish cage are made to swim through the waterway formed in the waterway forming member and moved into the medicinal bath tank, the liquid is allowed to swim for an appropriate period of time, and the parasites are separated from the fish, and then the waterway is again passed through. The point is that they can swim and move to the cage.

As shown in FIG. 9, the method and the apparatus for controlling parasites of live fish according to the sixth embodiment are shown in FIG. 9. The water bath 91 for medicine bath is a box-shaped hollow body having an opening on the top side and illuminates the inside of the hollow (not shown). It is equipped with equipment and contains fresh water with sufficient dissolved oxygen. One end of a water channel forming member 92A composed of a pipe made of a transparent plastic material in the fresh water in the medical bath tank 91 is made to face one end below the sea surface extension surface where the fish cage A is disposed, and the other end is made of the fish cage A. Under the sea. Similarly, a water channel forming member 92B made of a transparent plastic material pipe has one end facing the fresh water in the medicine bath tub 91 and the other end facing the sea of the fish cage B. The surface of the water channel forming member 92B facing the front end is concave and the movable member 93 whose depth is gradually reduced outward is vertically movable and is sunk at the bottom of the medicine bath tank 91.

The operation of the sixth embodiment is as follows.
Then, fresh water in which oxygen is sufficiently dissolved is supplied to the water bath 91 for medicine bath. At this time, fresh water having the same volume as the volume of the hollow portion of the water channel forming member 92A is supplied in addition to the amount that the fresh water surface in the water bath for medicine bath becomes flush with the sea surface. As a result, the freshwater surface becomes higher than the sea surface by H in the figure. Next, after closing the solenoid valve 89B and shutting off the circuit of the pipe 81B, when the vacuum pump 85 is operated, the inside of the hollow portion of the water channel forming member 92A is depressurized through the pipe 81A, and from the side of the fish tank A to the seawater, from the water tank side for the medicine bath. Fresh water is supplied to the channel forming member 92, respectively.
A enters the hollow part of A. At this time, at first, the seawater surface and the freshwater surface in the hollow portion of the waterway forming member 92A rise while maintaining the water level difference H, but when the freshwater surface reaches the horizontal portion of the waterway forming member 92A, the freshwater flows to the seawater side. The inside of the hollow portion of the waterway forming member facing the livestock A is filled with seawater superimposed on fresh water, and finally formed in the waterway forming member 92A in which the livestock A and the water tank 91 for medicine are arranged in the air. Connected by a canal.

When the liquid filled in the hollow portion of the water channel forming member 92A further reaches the float type level switch 82A through the pipe 81A, the switch 82A operates to act on the solenoid valve 89A to shut off the pipe 81A. The vacuum suction is shut off. Then, the fresh water surface in the medical bath tank 91 higher than the sea surface is pushed to the atmospheric pressure, and the sea water is pushed down through the fresh water in the hollow portion of the waterway forming member 92A, so that the fresh water surface in the medical bath tank 91 and the sea surface of the fresh water A Are made substantially the same plane and are balanced. Next, when the moving element 78A is floated by appropriate means, the fish enters the waterway forming member 92A and moves into the fresh water in the medicine bath tank 91 as the swimming range is narrowed. After a lapse of a predetermined time during which the parasite is separated from the fish, a vacuum break valve (not shown) is operated to operate the waterway forming member 92.
When the depressurized state on the A side is released and the atmosphere is released to the atmosphere, the liquid escapes from the inside of the water channel forming member 92A and the water channel disappears.

Next, after replenishing fresh water leaking from the inside of the water bath 91 through the water channel forming member 92A through the pipe 79, and opening the solenoid valve 89B, the inside of the hollow portion of the water channel forming member 92B becomes the same as described above. After being decompressed, seawater from the cage B side and fresh water from the medicine bath tank 91 side enter the hollow portion of the water passage forming member 92B, respectively, to form the cage B and the medicine bath tank 91 in the water passage forming member 92B disposed in the air. Connected by a canal. Next, when the moving element 93 is floated by appropriate means, the fish from which the parasites have been eliminated are moved to the waterway formed in the waterway forming member 92B as the swimming range is narrowed, and then moved to the fish cage B through the waterway. I do.

In the above embodiment, the embodiment has been described with respect to the control of parasites, but the present invention is not limited to this. In short, if the fish itself swims in a chemical solution or freshwater and enters, and stays in the chemical solution or freshwater and then returns to its original living environment, it can be used for prevention and treatment of other insect pests and diseases. It goes without saying that it can also be used for medicine baths.

[0054]

As described above, according to the medicinal bath method and apparatus for live fish according to the present invention, the medicinal solution or fresh water contained in the hollow portion of the medicinal bath tank and the breeding water in which the fish can survive are used. In contact with the fish in the cage where the breeding water is contained, so that the fish can swim back and forth between the chemical solution or freshwater in the aquarium and the breeding water in the cage with their own power, and the fish is in the chemical solution or freshwater. After a suitable time bath, the parasites were released from the fish, and the fish had a medicinal effect. As a result, the fish swim by their own power and move into the chemical solution or freshwater, so that humans are released from heavy muscle work in conventional human work. If this operation is mechanized by a transfer device such as a crane, the transfer device becomes unnecessary. Furthermore, since there is no need for contact between fish in the air or contact between the fish and a net, which is required in the prior art, the fish is not scratched. Fish are less susceptible to pathogens because they do not scratch. Therefore, the amount of drug used during aquaculture after chemical bathing can be small, and the survival yield of fish is good. Further, since the harmful chemical solution is contained in the hollow body having the bottom, an excellent effect such as minimizing the chemical solution overflowing into the sea can be obtained.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part showing a first embodiment of an apparatus for controlling parasites on live fish of the present invention.

FIG. 2 is a cross-sectional view of a main part, illustrating an operation of the method for controlling parasites of live fish according to the first embodiment.

FIG. 3 is a second embodiment of the method and the apparatus for controlling live fish of the present invention.
It is principal part sectional drawing which shows an Example.

FIG. 4 is a sectional view of a main part showing a third embodiment of the apparatus for controlling parasites on live fish of the present invention.

FIG. 5 is a fourth embodiment of the method and apparatus for controlling live fish of the present invention.
It is principal part sectional drawing which shows an Example.

FIG. 6 is a fifth embodiment of the method and the apparatus for controlling live fish of the present invention.
It is principal part sectional drawing which shows an Example.

FIG. 7 is a sixth embodiment of the method and apparatus for controlling live fish of the present invention.
It is principal part sectional drawing which shows an Example.

FIG. 8 is an explanatory diagram of an operation of a pipe tip portion according to a sixth embodiment.

FIG. 9 is a seventh embodiment of the method and the apparatus for controlling live fish of the present invention.
It is principal part sectional drawing which shows an Example.

FIG. 10 is an operation explanatory view showing a parasite control method for live fish according to a conventional technique.

[Explanation of symbols]

2,2A, 2B, 20,74A, 74B, 92A, 92
B Water channel forming member 3, 31, 41, 51, 61, 71, 91 Medicine bath water tank 3A, 31A, 41A, 51A Medicine bath water tank inlet 31B, 41B Medicine bath water tank outlet 24, 34, 78A, 78B, 93 Moving element A , B Sake cage 1,11,21 Main body 4 Lid member 5 Shaft 6 Handle 7 Bearing member 8B, 8C Blocking member 9B, 9C
Operation rod 10 Measuring instrument 11 Cable 12 Operation display panel 13,131 Container 14 Pipe 15 Pump 22 Fish guide plate 26 Operation rod 27 Chain 28 Light shielding sheet 29 Cable for surveillance camera 53, 63 Swimming range Control member 72 Lid 73 Net-like pipe 75 Lid 76 Shaft 77 Link 79 Pipe 80 Solenoid valve 81 Pipe 82 Float type level switch 83 Pressure switch 84 Trap 85 Vacuum pump 86 Pipe 88 Photoelectric sensor 89 Air vent solenoid valve

Claims (3)

[Claims] The present invention relates to a method for connecting a fish in a fish cage in a water tank, wherein the sea in a fish cage in which the fish are made viable and a drug solution contained in a hollow medical bath tank capable of preventing and treating pests and diseases of fish are connected by a water channel. After swimming for a required time in the chemical solution in the chemical bath tank, and then swimming in the chemical solution for a required time, and then swimming again in the waterway and moving to the living cage. 2. A hollow part having a specific gravity smaller than that of seawater and having an opening through which a chemical solution capable of preventing and treating fish pests and pests is stored and facing the sea and through which the fish can pass can be opened and closed. A medicine bath and a retreating unit for retreating fish from the hollow portion of the medicine bath are provided, and a fish cage is connected to the opening by a water channel so that the fish in the medicine in the medicine bath and in the sea in the fish cage. A medical bath apparatus for live fish, characterized by being able to come and go to prevent and treat pests and diseases of fish entering a chemical solution from a living cage. 3. A hollow medical bath tank containing a chemical solution capable of preventing and treating fish pests and insects, and one end is exposed to the chemical solution stored in the medical bath tank, and the other end is exposed to the sea of a fish cage. From a medicine bath tank through a water channel formed by a water pipe forming member, a pressure reducing means capable of depressurizing the hollow portion of the water channel forming member, and a water channel formed by depressurizing the hollow portion of the water channel forming member by the pressure reducing means. With a retreat means for retreating, the medicinal solution contained in the medicinal bath tank and the sea in the living tank are connected by the waterway, so that fish can travel in the medicinal solution in the medicinal tank and the sea in the living tank. A medical bath device for live fish, which is capable of preventing and treating pests and diseases of fish entering a chemical solution from a living cage