JPH01243933A - Fish farming equipment - Google Patents

Abstract

PURPOSE:To obtain a fish farming equipment capable of readily purifying a fish tank and operating with a low maintenance cost by injecting water from a water injecting pipe in a direction of tangential line of circumference of circle of a water tank having a round horizontal section by a wave motion pump and branching a pipe used both for water intake and bottom purifying of water tank to a suction pipe at center of the bottom face. CONSTITUTION:Water is injected by a wave motion pipe 6 driven by sea wave in a direction of tangential line of circumference of circle in a water tank having a round horizontal section 1 through a water injecting pipe 16 and a circular flow is raised in circumferential direction in the water tank. Water sucked from a suction pipe 5 at center of the bottom face to the wave motion pipe 6 is supplied with circulation and excrements of fish, etc., are discharged and removed by operation of opening and shutting valve through a pipe for purifying bottom of water tank 23 in case excrements of fish, etc., are precipitated and heaped up.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a fish farming device that uses seawater, and particularly to a low-energy fish farming device that uses ocean wave energy and is suitable for producing fish with good meat quality. It is.

[Prior Art] Domestic fishing is becoming sluggish year by year due to factors such as a decrease in the number of fish along the coast and the establishment of a 200 nautical mile fishing zone. In addition, the Japanese people have a strong preference for high quality fish, and in order to cope with this demand, various types of fish are being farmed in various places. Farmed fish is useful for ensuring a stable supply of fish, but the meat quality is not as good as that of wild fish, and there is a strong desire for improvements in that aspect.

The fish produced at the fish farm are JJ! Due to lack of movement, the amount of fat in the body increases compared to natural fat.

In order to eliminate this drawback, there have conventionally been fish farming devices that provide a flow to the water in the aquarium and make the fish swim in the water, thereby giving the fish exercise and improving their meat quality before being shipped.

A conventional fish farming device for improving fish meat purchasing is shown in FIGS. 4 and 5. Reference numerals 42 and 43 indicate a circulating water tank, and 44 a swimming tank, in which the fish perform swimming movements. , and gives a water flow to the water in a closed circuit connected by a water tank 45.

The water stream rotates like an arrow. The water flow is rectified by a rectifier grid 48 and sent to the swimming tank. The fish in the tank swim in the opposite direction to the current at the same speed as the current.

[Objective of the present invention: Problems to be solved] In the conventional fish farming device, a propeller 46 and a drive device 47 are required to provide water flow.

To prevent the risk of fish coming into contact with the propeller 46, it is necessary to isolate the propeller 46 from the swimming tank 44. Therefore, as shown in the figure, the swimming tank 44 and the water tank 45 are separated,
It has a structure that connects these and circulation water tanks 42° 43,
Since there is a play area in the aquarium, the overall size of the device becomes large, a large area is required, and the structure of the device becomes complicated, resulting in high equipment costs.

It takes a long time to improve the quality of fish, but the power required to drive the propeller during that time is expensive.

Another drawback is that it is difficult to remove excess food and fish excrement from the swimming tank because the water is circulating.

The present invention solves these problems with the conventional technology, and in order to supply fish with good meat quality to the market as food, the present invention uses almost no power other than the energy of natural waves, and reduces operation and maintenance costs. It is an object of the present invention to create and provide an extremely high-efficiency fish farming device that is extremely inexpensive, can easily process fish excrement, and purify the fish tank, and does not require an extra aquarium that does not contribute to the swimming of fish. purpose.

[Structure of the present invention: Means for solving problems] The fish farming device of the present invention includes a water injection pipe in the tangential direction of the circumference, a suction pipe in the center of the bottom, and a water intake pipe and a water tank bottom cleaning pipe branched from the suction pipe. It consists of a circular water tank with a horizontal cross section and a wave pump. In the present invention, a cylindrical water tank with a horizontal bottom surface and a suction pipe installed in the center thereof may be used, but it is also possible to have a conical shape with a convex bottom and place the suction pipe in the center of the tank.
Alternatively, the entire shape may be a narrow conical shape pointing downward.

Next, the fish farming device of the present invention serves as a water supply device, which is placed above the horizontal cross-sectional circular aquarium and between the wave pump and the water injection pipe, for supplying water pumped by the water head pressure of the wave pump. A tank may be provided.

Furthermore, the wave pump used in the fish farming device of the present invention is a horizontal type whose reciprocating axis is approximately horizontal, or a vertical type whose reciprocating axis is approximately vertical, and the piston and cylinder are aligned with the axis. It is a two-stage type that shares the common piston cup, with the diameter of the piston closer to the circular cross-sectional water tank above the water being smaller than the diameter of the piston that directly receives the wave force.

A suction pipe is laid near the center of the bottom of the water tank with a circular cross section, and the suction pipe is connected to a wave pump by a pipe. A cleaning pipe is installed that branches off from the suction pipe, and an on-off valve is installed inside the pipe.

In addition, if the coast where the fish farming equipment is installed is in an environment where the filth discharged from the water intake pipe/aquarium bottom cleaning pipe is difficult to spread, and it is necessary, a separate water intake pipe should be branched off and installed. Install a check valve inside the pipe. The above-mentioned on-off valves, check valves, etc. can also be automated by electrical means such as electromagnetic valves. Furthermore, the depth of the water intake and the capacity of the pumping tank will be designed to prevent water from running out even during abnormally low tides. Furthermore, an overflow means may be provided near the top of the water tank having a circular cross section.

[Operation] Wave pumps are operated by the energy of ocean waves,
It reciprocates in synchronization with the back and forth and up and down movements of the waves. Therefore, if the diameter of the piston that directly receives the waves is made large, and the diameter of the piston on the water tank side is made small, a pressure that is inversely proportional to the area and is much greater than the wave pressure will be obtained, and that large Due to the pressure, water is kept in a water tank located at a considerable height. Next, due to this water head pressure, the water discharged through the water jet pipe generates a circulation in the circumferential direction within the water tank in the circumferential tangential direction within the water tank having a circular horizontal cross section. While waiting for shipment, the fish constantly swim against the current, which reduces the fat content of the fish meat and produces higher quality fish.

In addition, the water in the water tank with a circular cross section flows in the direction of the tangential line on the inner side of the circumference, so it forms a vortex as shown in the center of the horizontal cross section circular tank in Figure 1. The water is then sucked into the wave pump, and is again circulated and supplied into the water tank with a circular horizontal section via the water pumping tank and the water injection pipe.

If fish excrement or surplus food settles in the aquarium with a circular cross-section, the water in the circular aquarium with a horizontal cross-section is not sent to the wave pump side, but is removed from the bottom of the aquarium by operating the on-off valve. Drain and remove via cleaning pipe. As a result, the water in the tank is purified, but the amount of water becomes insufficient, so close the on-off valve installed on the vertical part of the suction pipe and connect the water intake pipe to the water tank bottom cleaning pipe or from another intake pipe. When installed, fresh water is sucked in and replenished by one of them.

In addition, if you install a netted overflow hole at the top of the horizontal cross-section circular aquarium and adjust the flow rate so that there is always a little overflow, the aquarium will never run out of water.
The fish won't run away.

In this way, since wave energy is supplied almost infinitely, it is possible to mass produce high-quality fresh fish with almost no artificial power.

[Examples] Hereinafter, the present invention will be described in detail using examples and with reference to the drawings.

[Example 1] FIG. 1 is an explanatory diagram of an example in which a horizontal wave pump is used in the fish farming apparatus of the present invention. In the figure, a cylindrical water tank [1] consists of a cylindrical aquarium casing 2 and an aquarium bottom surface 3, and a drain port 4 is provided in the center of the aquarium bottom surface 3 for discharging water in the aquarium.

Although the drain port 4 is formed in a conical shape that becomes narrower at the bottom, it is of course not limited to this shape. Although not shown, the entire bottom surface 3 of the aquarium is formed into a conical shape with the drain port 4 at the lowest end. The drain port 4 is connected to a wave pump 6 via a suction pipe 5, and a suction on-off valve 7 is interposed in the pipe.

The wave pump 6 consists of a power cylinder 8 and a wave cylinder 9 connected in series via a partition plate IO, and in this embodiment, these are arranged along the sea surface 29 in a substantially horizontal direction. This constitutes the horizontal wave pump.

A power piston 11 is installed inside the power cylinder 8, and an intake port 112 and a discharge port 13 to which the suction pipe 5 is connected are provided at the end thereof. A stop valve 14 and a discharge check valve 15 are arranged.One end of a water injection pipe 16 is connected to the discharge port 13, and the other end of the water injection pipe 16 is connected to the discharge port 13 as shown in FIG. 1(a). , is connected to the water tank casing 2 along the circumferential tangential direction.A wave power piston 17 connected to the power piston 11 has a larger diameter than the former and is installed inside the wave power cylinder 9.The power cylinder 8 and wave cylinder 9
are provided with wave intake ports 18, 19 through which waves enter, and are connected to wave collecting plates 20, 21 to form a wave collecting device 25.

Further, an air vent pipe 22 is connected to the wave cylinder 9 so as to communicate with the inside thereof. From the suction pipe 5 to the water intake pipe and water tank bottom cleaning pipe 2
3 are branched, and their open sides (not shown) communicate with the sea surface 29. A water intake pipe/water tank bottom cleaning on/off valve 24 is provided in the pipe line of the water intake pipe/water tank bottom cleaning pipe 23 .

The wave collecting device 5!25 formed by the wave collecting plate 20.21 and the submerged plate 32 in FIG. The wave pump 6 is formed in such a way that waves enter from the widening open mouth side, and the wave force that is concentrated and raised in wave height acts on the wave pump 6. Waves of high wave height enter through the wave intake ports 18 and 19 of the power cylinder 8 and the wave power cylinder 9, act on the power piston 11 and the wave power piston 17, and pressurize them.

Approximately 30% of the wave energy acts on the wave pump 6.

In Figure 1, a cylindrical water tank 1 is located on the ground 2 isolated from the sea surface.
The horizontal wave pump 6 is placed substantially horizontally on the sea surface 29 and is fixedly held on a retaining wall or the like (not shown). The suction check valve 14 only allows the inflow of seawater from the cylindrical water tank l through the suction pipe 5, and is lockable by a locking mechanism (not shown). When the water is locked, water does not flow into the wave pump 6, and the discharge check valve 15 only allows clear water to flow from the wave pump 6 to the water injection pipe 16.

In addition, an overflow pipe 51 is installed near the top of the cylindrical water tank 1.
By providing this, when the pipe 23 is used as a water intake pipe, excess water can flow to keep the water surface level constant.

Next, the operation of this embodiment will be explained. As described above, the power piston 11 and the wave force piston 17 are simultaneously reciprocated by the waves moving in and out of the power cylinder 8 and the wave force cylinder 9 via the t2 wave collection device 25.

First, close the intake on-off valve 7 and open the water intake pipe/water tank bottom cleaning pipe 24. Power piston 11 and wave power piston 17.
By the suction operation (movement to the left in the drawing), new seawater is introduced into the power cylinder 8 from the water intake pipe/water tank bottom cleaning pipe 23 through the suction port 12. The introduced seawater is pushed out from the discharge port 13 into the water injection pipe 16 by the discharge operation (movement to the right in the figure) of the power piston 11 and the wave force piston 17. In this case, the suction check valve 14 closes the suction port 12, and no fluid flows out from the suction port 12.

The pushed out seawater flows into the tank casing 2 from the tangential direction of the inner circumference of the cylindrical tank 1, as shown in FIG. 1(a).
It is squirted inside. By repeating this process, the aquarium casing 2
The interior is filled with seawater.

Close the on-off valve 24 and put the fish into the aquarium casing 2,
Open the suction on-off valve 7. In this state, wave pump 6
Seawater is supplied into the aquarium casing 2 from the side via the water injection pipe 16, but at the same time, the seawater in the aquarium casing 2 flows from the drain port 4 on the aquarium bottom 3 to the suction pipe 5 side and flows into the wave pump 6. be attracted. At the same time, fresh seawater can also be sucked into the wave pump 6 via the valve 24 mentioned above.

Due to this circulation cycle, the seawater in the aquarium casing 2 repeats the circulation operation, and the seawater introduced into the aquarium casing 2 from the water injection pipe 16 is ejected from the tangential direction of the inner circumference. Circulation as shown in A occurs. As an experimental example, the diameter is 3 [m] and the height is 2 [m].
It was found that in order to generate a circular flow at a speed of 1 m/s in the water tank casing of 1 [m'], it is sufficient to inject water at a rate of 1 [m'] per minute. Furthermore, since the fluid is injected into the cylindrical tank in the tangential direction, the pressure on the outer circumference of the tank becomes higher than the pressure on the center side due to circular motion within the tank. The secondary flow along the section causes the sediment to collect at the central bottom. Therefore, by attaching a discharge pipe to the center bottom, the sediment can be automatically removed. In addition, the seawater in the tank casing 2 is 1 as shown in arrow view A.
While moving in a circular motion, a vortex is generated toward the bottom surface 3 of the water tank as shown by arrow B, and is sent from the drain port 4 into the suction pipe 5.

That is, a swirling water flow is continuously provided by both the inlet and outlet processes in the water tank.

As a result of the above, a moderate circulation occurs inside the water tank casing 2,
The fish swim in the tank along this circulation.

This makes it possible to create conditions in the aquarium for obtaining meaty fish.

On the other hand, the wave pump 6 operates using wave energy, and does not require artificial power for pump operation.
Operated solely on natural energy.

Therefore, almost no operation and maintenance costs are required.

Next, various purifications within the cylindrical water tank l will be explained. When sediment such as fish excrement or surplus food accumulates in the aquarium casing 2 and needs to be discharged, the suction on-off valve 7
Open the aquarium bottom cleaning on-off valve 24, and open the suction check valve 1.
4 is locked to prevent seawater from flowing into the power cylinder 8.

As described above, the seawater in the aquarium casing 2 rotates in a whirlpool, and the sediment on the aquarium bottom accumulates in the center of the aquarium due to the secondary flow caused by the pressure gradient, is drained from the drain port 4, and is drained from the aquarium bottom cleaning pipe 23. and is discharged into the sea surface29. This automatically cleans the inside of the aquarium, but almost no artificial power is required for this cleaning.Furthermore, by providing the overflow pipe 51, the suction on-off valve 7 is closed and the bottom of the aquarium is removed. When operating with the cleaning on-off valve 24 open, fresh seawater is continuously supplied to the aquarium, allowing fish farming to be carried out in flowing water with a high amount of dissolved oxygen.

In this embodiment, unlike the prior art, there is no need for a drive device 47 or the like that generates circulation, and the swimming water + ej 44 and the drive device 4 are not required.
There is no need to isolate the 7 side, and in the device of the present invention, the entire aquarium casing 2 can be used as a swimming tank, and the entire aquarium contributes to fish farming without waste. Therefore, if the scale is the same, it will be possible to farm a much larger amount of fish than in the past.

[Embodiment 2] Fig. 2 shows another embodiment of the present invention, in which the cylindrical water tank 1a is the same as the cylindrical water tank 1 of Embodiment 1 with a pumping tank 30 attached, and a wave pump 6a is installed vertically. Furthermore, in this embodiment, the wave pump 6a and the wave gathering device 25a are connected to each other so as to be movable up and down by a joint 31.31a, and the suction pipe 5a and the discharge pipe 36 are also of flexible structure. This is an example of a floating structure that responds to the ebb and flow of the tide. Further, an overflow pipe 51 was added in the same manner as in the first embodiment.

Although the vertical wave pump 6a has a reciprocating axis in the vertical direction, it is of course possible to use a horizontal wave pump 6 to pump water into a pumping tank provided above the cylindrical water tank. The vertical wave pump 6a is disposed near the retaining wall 41 in a substantially upright state above the sea surface 29, and is movably movable up and down on the retaining wall 41 and the seabed by joints 31, 31a, etc. As in the case of the horizontal type, the wave pump 6a is equipped with a wave collecting device 25a formed by being surrounded by a submerged plate 32 and a wave collecting plate 20.21, and allows waves to enter and exit from the opening side thereof. Of course, as shown in the diagram, the wave gathering device 2
5a is formed into a top-concentrated diagonal shape in order to collectively introduce the waves entering from the opening side into the wave pump 6a side.
In addition, the air float 40 moves the wave gathering device 25a to the sea surface 29.
It is constructed so that it floats upward and adapts to the ebb and flow of the tide.

A discharge on-off valve 3 is provided between the wave pump 6a and the pumping tank 30.
A discharge pipe 36 is flexibly installed, and a suction on-off valve 7a is installed between the wave pump 6a and the cylindrical water tank la.
A suction pipe 5a having a flexible structure is constructed. Further, a water intake pipe/water tank bottom cleaning pipe 23a having an intake pipe/water tank bottom cleaning on/off valve 24a is branched and connected to the suction pipe 5a. Further, a water intake pipe 38 having a suction check valve 37 is connected to the suction pipe 5a near the connecting portion of the wave pump 6a.

The pumping tank 30, which together with the cylindrical water tank l constitutes the cylindrical water tank 1a, is installed on the ground 28 and is formed of a cylindrical body. Pumping tank 30 and water tank casing 2 of cylindrical water tank 1
A water injection pipe 16a having a water injection on-off valve 39 is installed between them. The water injection pipe 16a is connected to the inner circumference of the water tank casing 2 as in the previous embodiment. It is disposed along the Itc line direction to generate the vortex within the water tank casing 2.

Although FIG. 3 shows the axial cross-sectional shape of the wave pump 6a, the internal structure is almost the same as that of the horizontal type, so a detailed explanation will be omitted. Components with the same function are designated by the same reference numerals. As described above, the power cylinder 8 and the wave force cylinder 9 are connected to the submerged plate 32 and the wave gathering plate 20, 21 to form the wave gathering device 25a. Also, the discharge pipe 36. Suction pipe 4
a, air vent pipes 22 are connected to each other.

To explain the operation, first, the waves introduced into the wave collection device 25a repeatedly enter and retreat from the wave intake ports 18 and 19.

This embodiment takes into account the ebb and flow of seawater, and at high tide, the seawater sucked in through the suction pipe 38 by the operation of the wave pump 6a is transferred to the pumping tank 30 through the discharge pipe 36.
stored within. After storage, the suction on-off valve 7a of the cylindrical water tank 1 is closed, and seawater is introduced into the cylindrical water tank 1 from the pumping tank 30 through the water injection pipe 16, and after filling, the suction on-off valve 7a is opened. However, during normal low tide when seawater is circulated, the wave gathering device and the wave pump 6a are used in this embodiment.
Since the wave pump 6a has a vertically adjustable structure and the piping is flexible, the wave pump 6a will work, but in the case of an abnormally large low tide, it may not work. In such a case, if the capacity of the pumping tank is increased to a certain extent, there will be no problem in supplying seawater to the cylindrical tank.

In this embodiment, the wave pump 6a is of a vertical type, so its characteristics will be explained by comparing it with the horizontal type of the first embodiment.
The vertical type has the disadvantage that it requires more joints than the horizontal type to attach to a stationary part of land, but when the pump itself operates, its own weight is added when the piston descends, so The efficiency is considered to be good.

By providing the overflow pipe 51, if the suction on-off valve 7a is closed, the intake pipe 3
Fresh seawater is continuously supplied to the circular aquarium 1a through 8, and fish can also be allowed to migrate in the new flowing water, which is always rich in dissolved fusion elements.

The other aspects are the same as those in Example 1, and fish farming to improve the quality of fish meat can be carried out with much higher efficiency than conventionally.

In Examples 1 and 2 above, the wave pump 6.6a is used and the structure of the wave collection device 25.25a is illustrated as an example, but the device of the present invention is limited only to these examples. For example, a plurality of water injection pipes are also within the technical scope of the present invention.

[Effects of the present invention] (1) Completely different from conventional fish farming devices that required artificial power, the fish farming device of the present invention uses the power of waves, which exist infinitely in nature, to obtain pressure water head. Since it is applied to fish farming by supplying water to a fish tank and obtaining a semi-permanent circular circulation within the tank, it requires almost no artificial power supply, so it is much more efficient than conventional methods. Therefore, it is economically very low cost.

(2) The fish farming device of the present invention does not require a drive unit such as a propeller to generate water flow, and accordingly, there is no need to provide a partition from the fish swimming tank or a play tank, so if the production volume is the same, In other words, the site area can be smaller than before.

(3) Without using special artificial power, a semi-permanent circular circulation is created in the fish aquarium of the device, in which the fish constantly swim against the current, so live fish waiting for shipment can be grown into high-grade fish with low fat content. Fish can be produced cheaply.

(4) The device of the present invention can purify water without using any special power to remove filth such as fish excrement, so it is very good for fish and has a great effect on cultivating high-quality fish.

[Brief explanation of the drawing]

Fig. 1 is an overall configuration diagram of [Example 1] of the fish farming device of the present invention, Fig. 1 (a) is a top view of a horizontal section circular aquarium with a Pt5f diagram, and Fig. 2 is a diagram of [Example 2] of the present invention. FIG. 3 is an axial sectional view showing the structure of the vertical wave pump adopted in [Embodiment 2] of FIG. 2, FIG. 4 is a plan view of a conventional fish farming device, FIG. 5 is a front view thereof. 1.1a... Cylindrical water tank, 2... Water tank casing,
3... Bottom of water tank, 4... Drain port, 5, 5a... Suction pipe, 6.6a... Wave pump, 7, 7a... Suction on/off valve, 8... Power cylinder, 9... Wave power cylinder, 10... Finish] plate, 11... Power piston, 1
2... Suction port, 13... Discharge port, 14... Suction check valve, 15... Discharge check valve, 16, 16a...
Water injection pipe, 17... Wave force piston, 18.19...
Wave intake, 20.21... wave gathering board, 22...
Air vent pipe, 23. 23a... Water intake pipe/water tank bottom cleaning pipe, 24, 24a... Water intake pipe/water tank bottom cleaning opening/closing valve, 2
5.25a... Wave gathering device, 28... Ground, 29
... sea level, 30 ... pumping tank, 32 ... submerged plate, 35 ... discharge on-off valve, 36 ... discharge pipe, 14.
37...Suction check valve, 3B...Intake pipe, 39...
・Water injection on/off valve, 40...Air float, 41...
・! ll wall, 42.43... Circulation water tank, 44... Swimming tank, 45... Water tank, 46... Propeller, 47.
... Drive device, 48 ... Rectifier grid, 51 ... Overflow pipe. Figure 1/1 Figure 4 Figure 5 (Capital) U5 (44) 1 procedure 7 city official documents (Horiki March 3, 1999

Claims (7)

[Claims] (1) A horizontal cross-section circular water tank with a drain port in the center of the bottom,
A wave pump that reciprocates as waves move in and out, a suction pipe installed between the suction port of the wave pump and the drain port, a suction on-off valve interposed in the pipe, and an inlet port of the wave pump. and a suction check valve and a discharge check valve provided at the discharge port, respectively, and a circular internal tangent of the horizontal cross-section circular water tank interposed at the tip of a conduit from the discharge port of the wave pump to the horizontal cross-section circular water tank. A fish farming device characterized by being provided with a water injection pipe connected along the direction. (2) The suction pipe has a water intake pipe and tank bottom cleaning pipe with an on-off valve that branches off from the pipe and takes in water from the sea or discharges wastewater from the bottom of the tank. The fish farming device according to item 1. (3) The suction pipe has a specialized water intake pipe branched from the suction pipe, in addition to the water intake pipe and water tank bottom cleaning pipe, as required. The fish farming device according to paragraph 2. (4) The water tank having a circular horizontal section has a water supply tank disposed above the tank and between the wave pump and the water injection pipe, the water being pumped by the water head pressure of the wave pump. A fish farming device according to any one of claims 1 to 3, which is. (5) The fish farming apparatus according to any one of claims 1 to 4, wherein the wave pump is of a horizontal type with its reciprocating axis arranged substantially horizontally. (6) The fish farming apparatus according to any one of claims 1 to 4, wherein the wave pump is of a vertical type with its reciprocating axis arranged substantially vertically. (7) The fish farming apparatus according to any one of claims 1 to 6, wherein the water tank having a circular horizontal cross section has an overflow means near the top thereof.