JPH032135Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a multi-stage rearing device used for raising young and baby shellfish such as clams, red shells, and clam shells that live on sandy soil. .

(Conventional technology) Conventionally, as a rearing device for young shellfish,
A PVC aquarium measuring 1m and 60cm in height was used.
Add gravel, coarse sand, and fine sand in this order from the bottom layer,
The young shellfish were raised in this.

(Problem that the invention aims to solve) However, with conventional rearing equipment, it is difficult to transport it to the sea when releasing it due to its heavy weight.
For this reason, it is necessary to take out the sand and young shellfish from the aquarium into a separate container, and carry it with you to release it into the sea.Also, since it is used flat, it is difficult to supply and drain seawater. Because seawater is stored in each aquarium, the seawater has no fluidity.
The shellfish droppings mixed with the sand made the aquarium very dirty, and
There was a problem that a lot of seawater was wasted because the seawater was disposed of in each aquarium.

(Means for solving the problems) The present invention was devised to solve the problems of the prior art, and its purpose is to:
By reducing the capacity of the aquarium and making it lighter in weight, it is easier to carry and handle during stocking, and it is also easier to supply and drain seawater, allowing seawater to flow between multiple aquariums. The objective is to provide a multi-stage breeding device for young shellfish that can effectively use seawater and keep the breeding aquarium clean by filtering waste such as feces. As a means, in the present invention, the rearing tanks are arranged in multiple tiers, one above the other, and the overflow port formed at the top of the upper tier rearing tank is formed separately from the rearing tank, and the overflow port is formed separately from the lower tier rearing tank. Adopts a configuration in which the filter tank is placed above the water tank, and a water supply pipe is installed between the filter tank and the lower breeding tank, and a drain pipe is installed in each tank. It was decided to.

(Function) Therefore, in the multi-stage rearing device of the present invention, seawater flows from the upper stage rearing tank through the overflow port into the filtration tank, where it is filtered and then passes through the water supply pipe to the lower stage rearing tank. It will flow into the tank.

Furthermore, after a predetermined rearing period has elapsed, seawater is drained from each rearing tank using a drain pipe, and the rearing tank is transported to the sea and released.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In addition, in this example, the upper and lower three-tier structure is used, and
A description will be given by taking as an example a breeding apparatus A in which two breeding tanks are arranged in each stage.

In the figure, reference numeral 1 denotes a frame, which is assembled with corner supports 2, side plates 3, and beams 4, and is made of long glass fiber reinforced foamed plastic (hereinafter referred to as "FFU").
) material is used, and adhesive or wood screws are used as the joining means, and the adhesive is applied to the nail heads of the wood screws.

Next, 5 are breeding aquariums, 1m wide and 50cm tall.
It is formed into a rectangular box made of FFU with a height of 30 cm and an open top surface, with an overflow port 6 extending outward from the upper edge of one short side, and a drain port 7 formed at the bottom. At the same time, a perforated plate 8 is installed at a distance of 5 cm from the bottom surface, and a canvas cloth 9 is laid on the upper surface of the perforated plate 8.

As shown in FIG. 3, the perforated plate 8 has a large number of small holes 10 formed in an FFU board shaped to fit within the inner shape of the breeding tank 5, and crosspieces 11 provided at the bottom corners of the breeding tank 5. It is built on top of 11. Also, 12
What is indicated by is a draining ridge formed at the lower edge of the tip of the overflow port 6.

Next, 13 is a filtration water tank, which is formed into a rectangular box made of FFU with an open top surface of 30 cm in width, 50 cm in length, and 40 cm in height.
It is divided into a water receiving chamber 16 and a filtration chamber 17 by a partition plate 15 of cm, and a water supply port 18 is formed at the bottom of the filtration chamber 17.

Then, the breeding aquarium 5 and the filtering aquarium 1 described above.
3 are arranged on the stand 1 in three stages, upper, middle and lower. In this case, the upper stage contains two rearing tanks 5, 5 and one filter tank 13, with the filter tank 13 at the lowest position. At the same time, the overflow port 6 of the upper breeding tank 5 faces above the lower breeding tank 5, and the overflow port 6 of the lower breeding tank 5 faces the top of the filtering tank 13. It is formed into a step-like overflow tank row X facing above the water receiving chamber 16, and the middle stage is a staircase with two rearing tanks 5, 5 and one filtration tank 13, similar to the upper stage. It is formed into a row of overflow tanks Y,
In addition, the lower stage is formed into an overflow tank row Z with two rearing tanks 5, 5, and has an arrangement structure in which the overflow port 6 of the lower rearing tank 5 faces the drainage receiver 19. It is formed.

Next, 20 and 20 are water supply pipes, respectively, between the upper overflow tank row X and the middle overflow tank row Y, and between the middle overflow tank Y and the lower overflow tank row Z. One end is connected to a water supply port 18 formed in the filtered water tank 13 on the upper stage, and the other end is piped so as to face the upper breeding water tank 5 on the lower stage.

Further, 21 is a drain pipe, and three branch pipes 23, 23, 23 are branched from the main pipe 22, and each branch pipe 23 is connected to the drain port 7 of the rearing tank 5, 5 at each stage. A lock valve 24 is provided for each breeding tank 5.

The reference numeral 25 indicates a drainage groove, and the outlet of the outflow pipe 26 connected to the drainage receiver 19 and the outlet of the main pipe 22 face the drainage groove 25.
Further, 27 is a water supply sprinkler pipe.

Therefore, when rearing young shellfish using the multi-stage rearing device A of this embodiment, first insert the perforated plate 8 into each rearing tank 5, lay the canvas cloth 9 on top of the perforated plate 8, and then Gravel, coarse sand, and fine sand (approximately 0.3 mm) are placed in the tank from the bottom layer, and in the case of clams, 1 million clams (approximately 0.2 mm), about 10 days old, are placed in each tank. In addition, the filtration chamber 1 of the filtration water tank 13
In the chamber 7, put filter media such as coral sand, activated carbon, manganese sand, ion exchange resin, etc.

Then, seawater is supplied from the water supply water pipe 27 into the upper rearing tank 5 in the upper overflow tank row 5, and further from the rearing tank 5 on the lower side to the water receiving chamber 1 of the filtration tank 13.
6, it flows over the overflow edge 14 of the partition plate 15 into the filtration chamber 17, where it is filtered and then passes through the water supply pipe 20 into the upper rearing tank 5 in the middle overflow tank row Y. Thereafter, in the same manner, the water flows through the middle and lower overflow tank rows Y and Z, and is discharged from the waste water receiver 19 through the outflow pipe 26 into the drain groove 25.

In this way, in the breeding apparatus A of this embodiment, seawater is supplied to each breeding tank 5 through the overflow port 6 and the water supply pipe 20.
Since the fish are raised with flowing water between them, seawater can be used effectively and there is no spoilage of the seawater.
Further, the filter water tank 13 can remove stains from seawater. Furthermore, since the rearing tank 5 is arranged in multiple stages, the capacity of the rearing tank 5 can be reduced accordingly if the same amount of rearing is obtained within the same floor area as in the conventional flat type. , handling such as carrying becomes easier.

When the predetermined breeding period has passed, each lock valve 24 is opened and the seawater in each breeding tank 5 is drained into the drain pipe 2.
1 into a drainage ditch 25, and the breeding aquarium 5 is transported to seawater and the young shellfish are released into the sea.

Although one embodiment of the present invention has been described above with reference to the drawings, the specific configuration of the present invention is not limited to the above-described embodiment.

For example, in the example, a case where the rearing tank has three tiers is used as an example, but it may be two or more tiers.
Further, the number of rearing tanks may be one for each row of overflow tanks in each stage.

Furthermore, the material of the rearing tank, filtration tank, stand, etc. is not limited to FFU; for example, metal materials with excellent corrosion resistance such as stainless steel, or other synthetic resin materials may be used. A mesh plate can also be used for the filter, and other filter cloth can be used for the canvas cloth.

(Effects of the invention) As explained above, according to the invention, the capacity of the breeding aquarium can be reduced by arranging the aquarium in multiple stages, and the transportation of each aquarium at the time of stocking is reduced. This makes handling easier. In addition, since seawater is made to flow between each breeding tank, seawater can be used effectively.The flowing seawater can create a breeding environment similar to the actual sea, and the filtered water tank allows seawater to be used effectively. This filter removes impurities from the seawater and keeps the seawater and each aquarium clean.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing a multi-stage breeding device for young shellfish according to an embodiment of the present invention, FIG. 2 is a plan view of the multi-stage breeding device, and FIG. 3 is a perspective view of a perforated plate. A: Multi-stage breeding device, 1: Frame, 5: Breeding tank,
6: Overflow port, 13: Filtration water tank, 20: Water supply pipe, 2
1: Drain pipe.

Claims (1)

[Scope of utility model registration request] Breeding tanks are arranged in multiple tiers, upper and lower, and the overflow port formed at the top of the upper tier breeding tank is formed separately from the breeding tank and is placed above the lower tier breeding tank. Multi-stage rearing of young shellfish, characterized in that a water supply pipe is arranged between the filtered water tank and the rearing tank on the lower stage, and a drainage pipe is arranged in each rearing tank. Device.