JPH0726931Y2 - Fish and shellfish aquaculture equipment - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial field of application] The present invention mainly uses continuous supply of seawater for circulation, and at the same time, uses swirl to remove suspended matters and sediments such as feces and feed residues discharged from fish and shellfish. The present invention relates to a fish and shellfish aquaculture device capable of automatically discharging and removing the suspended solids and sediments by moving them to a drainage port.

[0002]

2. Description of the Related Art Conventionally, various devices have been developed for cultivating marine fish and shellfish such as flounder and abalone, but a relatively mainstream device is a partition plate in the longitudinal center of the tank. This is a system for cultivating seawater by arranging it and providing a gap at both ends to circulate the seawater in circulation.
It is disclosed in Japanese Patent No. 12249.

The fish and shellfish aquaculture apparatus disclosed in this publication is an elliptical water tank of the type in which seawater is circulated and circulated, and a seawater supply pipe having a large number of ejection holes is horizontally provided on the inner bottom of the water tank. It is characterized in that it is placed laterally, and at the position close to and behind it, feces and mud suction grooves opened in the water conduit on the lower bottom are formed in parallel.

[0004]

In the above-mentioned conventional aquaculture device, since fresh seawater is constantly fed, the amount of fish and shellfish raised can be increased and the growth can be made extremely fast. In addition, the feces of fish and shellfish that have settled at the bottom of the aquarium and the feed residue are easily discharged into the suction groove,
It is difficult to discharge things that have settled at the bottom near the middle of the suction groove, and dust that floats in the seawater or on the surface.Because of the groove shape, the drainage efficiency is poor. In addition, there is a problem that the cleaning of the tank must be repeated.

The present invention solves the above-mentioned problems of the prior art, and the purpose thereof is to remove floating substances or sediments in a water tank by automatically generating them in a drainage port by generating a vortex. and to provide a farming system of fish and shellfish that made it possible to reduce the number of cleaning in the tank considerably.

[0006]

Means for Solving the Problems The constitution of the present invention for solving the above is to provide a partition plate provided with gaps at both ends in the central longitudinal direction of an oval water tank, a bottom portion of the water tank, and / or provided in an upper portion, the water supply pipe allowed to ejected toward the direction of flow of the water, and it comprises a open ended drain outlet to drain provided at the bottom of the water tank, and both ends of the partition plate
In addition to providing a curved guide plate on the water flow side,
The drainage port is provided in or near the curve of the guide plate.

Further, as described in claims 2 to 5, a large number of ejection holes are formed in the water supply pipe, the guide plate and the drain port are provided at appropriate positions of the partition plate, and the drain port. Is provided not only on the bottom of the water tank but also on the top, and a rising pipe for adjusting the water level is rotatably provided at the end of the drainage pipe. The present invention is mainly suitable for use as an apparatus for cultivating marine fish and shellfish using seawater, but it is needless to say that the present invention is not limited to these and can also be used as an apparatus for cultivating fish and shellfish in fresh water.

[0008]

The operation of the present invention will be described with reference to FIGS. A water supply pipe 3 having a large number of ejection holes 3a horizontally arranged in the central bottom and upper part of the water tank 1 with the partition plate 2 as a boundary.
When seawater is further ejected, as shown in FIG. 2, the seawater circulates in the water tank 1 in a fixed direction. On the other hand, the seawater that has swirled at both ends of the water tank 1 does not go straight due to the curved guide plate 4 provided on the partition plate 2 , becomes a vortex and flows toward the curved inner surface of the guide plate 4, and further drains. It turns around the mouth 5 and flows to the drainage port 5. The same phenomenon occurs near the guide plate 4 on the opposite side. The seawater that has gone straight ahead is propelled again by the water jet output of the water supply pipe 3.

According to the flow of seawater as described above, the water tank 1
The bottom of the partition plate 2 and the fish and shellfish dung that has been settled or suspended in the water and the rest of the feed automatically gradually move to the curved inner surface of the guide plate 4, and finally reach the drainage port. It is sucked into 5 and discharged.

Further, as shown in FIG. 3, when a pipe is inserted into the drain port 5 provided at the bottom of the water tank 1 and the drain port is moved to the upper part, the water level is adjusted and at the same time it floats on the water surface moved by the above action. The fish and shellfish droppings and feeding residues that had been discharged are also discharged to the drain port 5 '. By such an action, the precipitate and the suspended matter in the water tank are automatically discharged to the drainage port.

[0011]

Embodiments of the present invention will be described in detail below with reference to FIGS. 1 to 4, but the present invention is not limited to these embodiments.

In the figure, reference numeral 1 is an oval water tank, and 2 is a partition plate provided with a gap at both ends in the central longitudinal direction of the water tank 1, and at both ends thereof in the water flow direction side. A curved guide plate 4 is integrally provided. The partition plate 2 allows the seawater to circulate in the water tank 1 in a fixed direction.

Reference numeral 3 is a seawater supply pipe which is horizontally disposed in the center of the water tank so as to be opposed to each other with the partition plate 2 as a boundary. One of the supply pipes 3 is placed horizontally at the bottom of the water tank 2 with a gap from the bottom floor of the water tank 1, and the other is placed horizontally above the water tank 2. Both water supply pipes 3 may be provided at the bottom of the water tank 1, but it is preferable to provide them separately at the upper and lower portions because the flow of the upper and lower layers of seawater in the water tank 1 becomes relatively uniform.
A large number of ejection holes 3a are provided in each of the water supply pipes 3, and are directed in directions opposite to each other. The water supply pipe 3
May be rotatably installed so that the jet angle of seawater can be changed. The method of supplying seawater includes a method of always supplying fresh seawater, a method of purifying seawater discharged from a water tank, and a method of recirculating and supplying.

Reference numeral 4 is an arc-shaped guide plate integrally provided at both ends of the partition plate 2. The concave surface of the guide plate 4 is provided so as to face the direction of water flow. Near the inside of the curve of the guide plate 4, a drain port 5 opening to the drain pipe 6 is provided. Even if the drain port 5 is provided in the curved portion of the guide plate 4, the same operational effect can be obtained.

In the embodiment shown in FIG. 1, the drainage port 5 is provided only at the bottom of the water tank 1, but as shown in FIG. A drain port 5'may be provided. When the length of the water tank 1 in the longitudinal direction becomes large, a guide plate 4 and a drain port 5 may be further provided at appropriate positions on the partition plate 2 as shown in FIG. Further, when increasing the gap between the both ends and the water tank 1 of the partition plate 2, as shown in FIG. 4, further provided with guide vanes 10 on the outer side of the guide plate 2, a smooth circumfluence seawater prompting
The effect of advancing and generating the vortex is increased.

By the guide plate 4 and the drainage port 5 or 5'provided as described above, the sediment in the water tank and the suspended matter in the water or on the surface of the water are concentrated and collected near the drainage port 5 or 5 '. In addition, since the flow velocity at the drain port 5 or 5'is higher than that of the conventional technique, the discharge efficiency of the precipitate or suspended matter is further improved.

Reference numeral 7 is a rising pipe provided at the end of the drain pipe 6, and is mounted so as to be rotatable around the drain pipe 6 as an axis. By rotating and inclining the riser pipe 7 in a direction parallel to the water tank 1, sediment such as fish and shellfish dung and feeding residues are discharged together with seawater, and at the same time, the water tank 1
It is convenient because it can also be used for water level adjustment. still,
When the rising pipe 7 is not used as a constant discharge pipe for seawater, a separately provided overflow discharge pipe 9 can be used as a discharge pipe.

The operation of this embodiment is as follows. The seawater that circulates in a certain direction due to the seawater being jetted from the jet holes 3a of the water supply pipe 3 is swung by the guide plate 4 provided on the partition plate 2 and the end wall of the water tank 1 to change the flow direction. To be done. The part of the seawater changed flow direction vortex flow generated Ri by the guide plate 4 without straight, continue to flow back into the bent inner direction of the guide plate, further, the drainage port to pivot around the drain outlet 5 5 (See the arrow in Fig. 2).

According to such a flow of seawater, the bottom of the aquarium 1 and the feces of fish and shellfish floating in the water and the rest of the feed are
It is automatically gradually concentrated and moved into the bending of the guide plate 4, and finally sucked into the drainage port 5. Also, FIG.
As shown in FIG. 3, if a drain port 5 ′ is further provided on the upper part of the water tank 1, suspended matter on the water surface is also sucked into the drain port 5 ′ by the same action as described above.

[0020]

[Effects of the Invention] As described above, when the fish and shellfish aquaculture device of the present invention is used, the feces and feeding residues of the fish and shellfish that have settled or floated in the tank are automatically concentrated and discharged to the drain outlet. Therefore, in combination with the flow velocity at the drain outlet, these dirt substances can be efficiently discharged from the drain pipe at all times, or the discharge pipe can be operated regularly to discharge these dirt substances efficiently. The number of cleanings can be considerably reduced compared to the conventional one.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a partially-notched aquaculture device of the present invention.

FIG. 2 is a plan view showing the flow of water in the aquaculture device of the present invention.

FIG. 3 is a perspective view of a second embodiment of the aquaculture device of the present invention, which is partially cut away.

FIG. 4 is a plan view of a main part showing a third embodiment of the aquaculture device of the present invention.

[Explanation of symbols]

1 ... Water tank, 2 ... Partition plate, 3 ... Water supply pipe, 3a ... Jet hole,
4 ... Guide plate, 5, 5 '... Drainage port, 6 ... Drain pipe, 7 ... Rise pipe, 8 ... Pipe, 9 ... Drain pipe, 10 ... Guide blade

Claims (5)

[Scope of utility model registration request] 1. A partition plate provided with gaps at both ends in the central longitudinal direction of an oval water tank, and water jetted in the flow direction of water provided at the bottom and / or upper portion of the water tank. feed pipe, and it comprises a open ended drain outlet to drain provided at the bottom of the water tank, and both ends of the partition plate
1. A fish and shellfish aquaculture device, characterized in that a curved guide plate is provided on the side of the water flow direction, and the drainage port is provided in or near the curved shape of the guide plate. 2. The fish and shellfish aquaculture device according to claim 1, wherein a large number of ejection holes are formed in the water supply pipe. 3. A guide plate curved in the direction of water flow and a drain port provided in or near the curve of the guide plate at an appropriate position of the partition plate. The fish and shellfish aquaculture device according to item 1. 4. The fish and shellfish aquaculture device according to claim 1, further comprising a drainage port that is opened in the drainage pipe and is provided in an upper portion of the water tank. 5. The fish and shellfish aquaculture device according to claim 1, wherein a rising pipe is provided at the end of the drainage pipe so as to be rotatable around the drainage pipe as an axis.