JPH05123081A - Fish farming pond - Google Patents

Abstract

PURPOSE:To obtain a fish farming pond suitable for rainbow trout, etc., capable of rapidly discharging dirts such as fish excrement and left feed by installing a water suction pipe equipped with plural water flow inlets on a peripheral wall between an air diffusion pipe and the inner bottom of a fish farming tank and a drain hole in the pipe. CONSTITUTION:A water suction pipe 70 equipped with plural water flow inlets 72 having small diameter on a peripheral wall between an air diffusion pipe 50 and the inner bottom of a fish farming tank 10 is installed and the water suction pipe 70 is allowed to communicate with a drain hole 12 on the inner bottom of the fish farming tank 10. Dirts collected in the periphery of the water suction pipe 70 below the air diffusion pipe 50 are sucked in the water suction pipe 70 and discharged by using suction force in the circumference of water 20 flowing as a rapid current into the water suction pipe 20 through water flow inlets 72 having a small diameter under pressure of the water 20 in the fish farming tank 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fish pond for breeding fish such as rainbow trout, rock fish, and Nishikigoi.

[0002]

2. Description of the Related Art The above-mentioned fishpond generally has the following structure.

As shown in FIG. 8, a fish tank 1 having a peripheral wall made of concrete, resin material or the like and containing water 20 for fish cultivation.
0 is set. The fish culture tank 10 is provided with a circulation means 30 including a water circulation pipe 32 and a water circulation pump 34 for circulating the water 20 in the fish culture tank 10 into and out of the fish culture tank 10 through a drain port 12 opened at the bottom of the fish culture tank 10. Circulation means 3
At the middle of the water circulation pipe 32 that forms a water circulation path for circulating the outside of the fish tank 10 with 0, a filtering means 40 for removing contaminants such as fish droppings and residual food contained in the water circulating outside the fish tank 10 is provided. I have it. An acid trachea 50 having a large number of minute air discharge holes 52 on its peripheral wall is provided at the bottom of the fish tank 10. The acid trachea 50 is provided with a feeding means 60 for feeding air into the tube.

According to this fish pond, the water 20 in the fish tank is circulated in and out of the fish tank 10 by the circulation means 30, and the filth contained in the water circulated outside the fish tank 10 is removed by the filtration means 40. Continuing, it is possible to continue removing filth such as fish droppings and residual food discharged to the water 20 for fish cultivation in the fish tank 10. At the same time, the air is continuously fed into the acid trachea 50 by the feeding means 60, and the air is continuously supplied to the water 20 in the fish culture tank 10 through the discharge holes 52 in the peripheral wall of the acid trachea 50, and the fish culture in the fish culture tank 10 is continued. The irrigation water 20 can be continuously supplemented with oxygen.

[0005]

However, in the above-mentioned fishpond, the wastewater 12 at the bottom of the fish tank is circulated by the circulation means 30 for the waste such as fish droppings and residual food accumulated around the acid trachea 50 at the bottom of the fish tank 10. Through the circulation means 30 to quickly and thoroughly carry out together with the water to be circulated in and out of the fish tank 10 to the outside of the fish tank 10, and to properly and swiftly remove the filth carried out with the water to the outside of the fish tank 10 by the filtering means 40. I couldn't.

More specifically, as shown in FIG. 9, in the fish pond, fish dung discharged into the water 20 in the fish tank,
Dirt such as leftover food should be removed from the acid trachea 50 provided in the bottom of the fish tank 10.
The fish tank 10 generated in the water 20 in the fish tank by the rising force of bubbles formed in the water 20 in the fish tank by the air discharged from the tank
The circulation lowering force of the water toward the vicinity of the acid trachea 50 at the inner bottom, that is, the water circulation force in the direction of the arrow in FIG. 7 was received, and the fish tank 10 continued to gather around the acid trachea 50 at the bottom of the inner bottom. And
The filth that continues to gather around the acid trachea 50 is the fish tank 10.
Move the inner bottom part to the drain port 12 accurately and quickly,
Water circulation pipe 32 outside the fish tank 10 through the drainage port 12
It did not flow out together with the water 20 in the fish tank, but kept accumulating around the acid trachea 50.

Therefore, in the above-mentioned fish pond, water 20 is discharged from the fish tank 10 at short intervals to remove sewage such as fish droppings and residual food accumulated around the acid trachea 50 at the bottom of the fish tank 10. Therefore, the cleaning work required a great deal of time and labor.

[0008] This is a so-called pouring pond in which the water accumulated in the fish tank is continuously removed from the outside of the fish tank while continuously supplying the water for fish cultivation to the fish tank.
The same was true in a fish pond having the same acid trachea as the above at the bottom of the inside of the fish tank for storing water for fish cultivation.

The present invention has been made in view of the above-mentioned problems, and the filth such as fish droppings and residual food accumulated around the acid trachea provided at the bottom of the fish tank is passed through the drainage port at the bottom of the fish tank. Providing a fishpond that can reliably and swiftly remove the water in the fish tank to the outside without fail and keep the water in the fish tank in a clean condition free of dirt for a long period of time. The purpose is to

[0010]

In order to achieve the above object, the first fishpond of the present invention comprises a fish tank for storing water for fish cultivation, and water in the fish tank at the bottom of the fish tank. A circulation means for circulating the inside and outside of the fish tank through the open drainage port, a filtration means for removing the dirt contained in the water circulating outside the fish tank by the circulation means, and an acid trachea provided at the bottom of the fish tank. , An acid trachea with an air discharge hole on its peripheral wall,
A supply means for supplying air into the acid trachea is provided, and water in the fish tank is circulated in and out of the fish tank by the circulation means.
The filth contained in the water circulated outside the fish tank is removed by the filtering means, and air is fed into the acid trachea by the feeding means, and the air is cultivated through the discharge holes of the acid tracheal peripheral wall. In a fish pond used to discharge water into the tank and supply air to the water in the fish tank, water absorption with a small-diameter or narrow water inlet on the peripheral wall between the acid trachea and the bottom surface of the fish tank A pipe, which is provided with a water-absorbing pipe communicating with the drainage port, is discharged into the water in the fish tank through the discharge hole of the acid tracheal peripheral wall, and the rising force of air bubbles in the water in the fish tank raises the water. Using the water circulation force generated in the water in the fish tank, collect the waste discharged into the water in the fish tank around the water absorption pipe below the acid trachea along the inside of the fish tank, and collect water in the fish tank. Under the pressure of the water absorption pipe peripheral wall Using the suction force generated around the water that flows into the water absorption pipe through a small-diameter or narrow-width water inlet, the filth collected around the water-absorption pipe is absorbed into the water-absorption pipe along with the water that flows into the water-absorption pipe. The filth that is made to flow into the water absorption pipe through the water inlet of the peripheral wall and is made to flow into the water absorption pipe together with water is discharged to the outside of the fish culture tank through the drainage port communicating the inside of the water absorption pipe by the circulation means, and the fish cultivation tank It is characterized in that the filtering means removes the dirt contained in the water discharged to the outside.

The second fish pond of the present invention comprises a fish tank for storing water for fish culture, water supply means for supplying water for fish culture to the fish tank, and water for collecting water in the fish tank. A drainage port for discharging to the outside of the fish tank, an acid trachea provided at the bottom of the inside of the fish tank, and an acid trachea provided with an air discharge hole on its peripheral wall, and a feed for feeding air into the acid trachea Means for discharging the water accumulated in the fish tank to the outside of the fish tank through the drain port while supplying water for fish cultivation in the fish tank by the water supply means, and at the same time, air is supplied by the feeding means. Is fed into the acid trachea, the air is discharged into the water in the fish tank through the discharge hole of the acid tracheal circumferential wall, and in the fish pond used to replenish the air in the water in the fish tank, It is a water absorption pipe with a small diameter or narrow water inlet on the peripheral wall between the acid trachea and the bottom of the fish tank. In the fish tank, a water absorption pipe communicating with the drainage port is provided, and the water is discharged into the water in the fish tank through the discharge hole of the acid tracheal circumferential wall to rise in the water in the fish tank. Using the water circulation force generated in the water of, while collecting the waste discharged into the water in the fish tank around the water absorption pipe below the acid trachea along the inside of the fish tank,
By using the suction force generated around the water flowing into the water absorption pipe as a rapid flow through the water inlet having a small diameter or a small width of the water absorption pipe peripheral wall in response to the pressure of the water accumulated in the fish tank,
The filth collected around the water-absorbing pipe is made to flow into the water-absorbing pipe in a rapid flow and is made to flow into the water-absorbing pipe through the water inlet of the peripheral wall of the water-absorbing pipe, and the filth that has been made to flow into the water-absorbing pipe with the water is absorbed by the water-absorbing pipe. It is characterized in that the water is discharged to the outside of the fish culture tank through the drain port communicating with the inside.

[0012]

In the first fish pond having the above structure, when the water in the fish tank is circulated in and out of the fish tank by the circulation means, the contaminants contained in the water circulating outside the fish tank are removed by the filtering means. It

At the same time, when air is fed into the acid trachea by the feeding means, the air is discharged into the water in the fish tank through the discharge hole in the peripheral wall of the acid trachea, and oxygen is added to the water in the fish tank. Will be replenished.

In this case, the water in the fish tank is changed by the ascending force of the air bubbles that are discharged into the water in the fish tank and rise in the water in the fish tank through the discharge holes in the peripheral wall of the acid trachea. It circulates down inside the fish tank toward the acid trachea. Then, in response to the circulating force of the water that circulates and descends in the direction of the acid trachea, dirt such as fish droppings and residual food discharged into the water in the fish tank along the inside of the acid trachea around the water absorption pipe along the inside of the fish tank. get together.

The filth collected around the water-absorbing pipe receives a pressure of water accumulated in the fish-cultivating tank and flows into the water-absorbing pipe as a rapid flow through a water inlet having a small diameter or a narrow width of the peripheral wall of the water-absorbing pipe. In response to the suction force generated around the water, it is sucked and flows into the water absorption pipe through the water inlet of the peripheral wall of the water absorption pipe together with the water in the fish tank that flows into the water absorption pipe as a rapid flow.

The water containing filth that has flowed into the water absorption pipe is discharged to the outside of the fish culture tank through the drainage port at the bottom of the inside of the fish culture tank, which communicates the inside of the water absorption pipe by the circulation means.

The water containing the dirt discharged to the outside of the fish tank is removed by the filtering means. Then, the water from which the filth has been removed is flowed into the fish tank again by the circulation means.

After that, the above steps are successively repeated, and the filth discharged into the water in the fish tank and collected around the water absorbing pipe absorbs water together with the water in the fish tank flowing in a rapid flow into the water absorbing pipe. After flowing into the water-absorbing pipe through a water inlet having a small diameter or a small width on the peripheral wall of the pipe, the water is continuously and reliably discharged to the outside of the fish tank through the drainage port at the bottom of the fish tank by the circulation means. Then, the water containing the waste discharged to the outside of the fish tank is filtered and purified by the filtering means, and the cleaned water is continuously flowed into the fish tank by the circulation means.

In the second fish pond having the above structure, when the water for supplying fish is supplied into the fish tank by the water supply means, the water accumulated in the fish tank is discharged to the outside of the fish tank through the drainage port. While the water accumulated in the fish tank is kept at a constant water level, the water accumulated in the fish tank is repeatedly replaced by the clean water supplied to the fish tank by the water supply means.

At the same time, when air is fed into the acid trachea by the feeding means, the air is discharged into the water in the fish tank through the discharge holes in the peripheral wall of the acid trachea, and oxygen is added to the water in the fish tank. Will be replenished.

In this case, the water in the fish tank is changed by the ascending force of the air bubbles that are discharged into the water in the fish tank through the discharge holes in the peripheral wall of the acid trachea and rise in the water in the fish tank. It circulates down inside the fish tank toward the acid trachea. Then, in response to the circulating force of the water that circulates and descends in the direction of the acid trachea, dirt such as fish droppings and residual food discharged into the water in the fish tank along the inside of the acid trachea around the water absorption pipe along the inside of the fish tank. get together.

The filth collected around the water-absorbing pipe receives a pressure of water accumulated in the fish-cultivating tank and flows into the water-absorbing pipe as a rapid flow through the water inlet having a small diameter or a narrow width of the peripheral wall of the water-absorbing pipe. In response to the suction force generated around the water, it is sucked and flows into the water absorption pipe through the water inlet of the peripheral wall of the water absorption pipe together with the water in the fish tank that flows into the water absorption pipe as a rapid flow.

The water containing filth that has flowed into the water absorption pipe is discharged to the outside of the fish tank through the drain port at the bottom of the inside of the fish tank, which is in communication with the inside of the water absorption pipe.

After that, the above steps are successively repeated, and the filth discharged into the water in the fish tank and collected around the water absorbing pipe absorbs water together with the water in the fish tank flowing in a rapid flow into the water absorbing pipe. After flowing into the water absorption pipe through a water inlet having a small diameter or a narrow width of the peripheral wall of the pipe, the water is continuously and surely discharged to the outside of the fish tank through the drainage port at the bottom of the fish tank that communicates the inside of the water absorption pipe.

[0025]

Embodiments of the present invention will now be described with reference to the drawings. 1 to 5 show a preferred embodiment of the first fish pond of the present invention, FIG. 1 is a front sectional view showing the schematic structure thereof, FIG. 2 is a side sectional view thereof, and FIGS. FIG. 5 is an enlarged side sectional view around the acid trachea, and FIG. 5 is a front sectional view around the water absorption pipe. The fishpond in this figure will be described below.

In the figure, reference numeral 10 denotes a fish tank that stores water for fish cultivation.

The fish tank 10 has a watertight peripheral wall formed of concrete or resin material.

A drain port 12 is opened at the bottom corner of the fish tank 10.

A water circulation pipe 32 forming a water circulation path of a water circulation means 30 for circulating the water 20 in the fish tank to the inside and outside of the fish tank 10 is connected to the drain port 12. The tip of the water circulation pipe 32 is arranged at the upper end of the fish tank 10, and the tip opening 32 a is directed into the fish tank 10. Then, the water 20 in the fish tank discharged from the drainage port 12 can be made to flow into the fish tank 10 again from above the fish tank 10 through the water circulation pipe 32 arranged outside the fish tank 10.

A water circulation pump 34 is provided in the middle of the water circulation pipe 32. Then, the water circulation pump 34 allows the water 20 in the fish tank to be forcedly circulated in and out of the fish tank 10 through the water circulation pipe 32.

A filtering means 40 is provided in the middle of the water circulation pipe 32 connecting the water circulation pump 34 and the drainage port 12 on the bottom surface of the fish tank. As the filtering means 40, for example, a filtering tank filled with small gravel or filtering material is used. And
The filtering means 40 is used to filter and remove dirt such as fish droppings and residual food contained in the water 20 in the fish tank that circulates in the water circulation pipe 32.

On the inner bottom of the fish tank 10, an acid trachea 50 having a plurality of fine air discharge holes 52 provided in a scattered manner on its peripheral wall is horizontally provided.

The acid trachea 50 is provided with a feeding means 60 for feeding air into the acid trachea 50.

The feeding means 60 is, for example, a long air pipe 62 connected to the acid trachea 50, and an air pipe 62 which penetrates the water 20 in the fish tank and projects above the fish tank 10.
It is formed by an electric blower 64 provided at the upper end of the air tube 62. Then, the blower 64 is rotated to feed air into the acid trachea 50 through the air pipe 62, and the air fed into the acid trachea 50 is introduced into the water 20 in the fish tank through the discharge hole 52 of the circumferential wall of the acid trachea. Drain the water in the fish tank 2
Oxygen can be replenished during 0.

The above structure is the same as that of the conventional fish pond, but in the fish pond shown in the figure, the fish tank 10 having the drain port 12 is opened.
As shown in FIG. 1, the upper periphery of the inner bottom surface is covered with a partition wall 14 having a box-shaped watertight structure. Then, inside the small room 16 covered with the partition wall 14, the other fish tank 1
It is partitioned with 0 and watertightness.

A water absorption pipe 70 is provided laterally between the acid trachea 50 and the inner bottom surface of the fish tank 10.

Specifically, as shown in FIG. 3, a water absorption pipe 70 is provided horizontally on the inner bottom surface of the fish tank 10 having a planar shape.

Alternatively, as shown in FIG. 4, a recess 76 is formed in the bottom surface of the fish tank 10, and the water absorption pipe 7 is placed in the recess 76.
The lower part is inserted and the water absorption pipe 70 is stably provided horizontally on the bottom surface inside the fish-culture tank 10.

On the peripheral wall of the water absorption pipe 70, as shown in FIG. 1, a plurality of small-diameter water inlets 72 are arranged side by side at a small pitch.

Alternatively, as shown in FIG. 5, the water absorption pipe 7
Small water inlets 74 each having a slit shape are provided on both sides of the zero circumference wall.

As shown in FIG. 3 or 4, these water inlets 72, 74 are provided in the lower part or both upper parts of both sides of the peripheral wall of the water absorption pipe 70 near the bottom surface inside the fish tank 10 where filth tends to collect.

One end of the water absorption pipe 70 is hermetically sealed. The other end of the water absorption pipe 70 is connected to the partition wall 14 in the fish tank.
To penetrate into the small chamber 16 inside the partition wall 14. Then, the inside of the water absorption pipe 70 is made to communicate with the inside of the drainage port 12 opened on the bottom surface of the fish tank 10 through the inside of the small chamber 16.

In the small chamber 16, a water overflow pipe 18 is projected into the inside and outside of the fish tank 10 by penetrating the bottom wall of the fish tank 10. Then, the circulation means 30 circulates the inside and outside of the fish tank 10 through the inside of the small room 16, that is, the amount of water 20 supplied to the inside of the fish tank is too much, and the water 20 in the small room 16 reaches a predetermined water level or higher. At this time, excess water is removed to the outside of the fish tank 10 through the water overflow pipe 18 so that the water 20 in the fish tank can be kept below a predetermined water level.

The fishpond shown in FIGS. 1 to 5 is constructed as described above.

Next, an example of its use and its operation will be described.

The water circulation pump 34 of the circulation means 30 is operated to forcibly circulate the water 20 in the fish tank 10 into and out of the fish tank 10 through the water circulation pipe 32 arranged outside the fish tank 10. Then, the filth contained in the water 20 is filtered through the filtration tank of the filtration means 40 provided in the middle of the water circulation pipe 32, and the water 20 containing the sewage such as fish droppings and residual food circulating outside the fish culturing tank 10 is filtered. After filtering out by means 40,
The water circulating pipe 3 is provided with the purified water 20 by removing the waste.
2 Let it flow again into the fish tank 10 from the tip. Then, the filth contained in the water 20 in the fish tank is continuously removed by the filtering means 40, the water 20 in the fish tank is contaminated with the dirt, bacteria and the like are generated, and the fish 20 is kept in the water 20 in the fish tank. Prevents the fish from being adversely affected.

At the same time, the blower 64 of the feeding means 60
Is operated to feed air into the acid trachea 50 through the air tube 62. Then, the air fed into the acid trachea 50 is passed through the discharge hole 52 in the peripheral wall of the acid trachea to supply the water 20 in the fish tank.
It is prevented that the water 20 in the fish tank becomes oxygen-deficient by being continuously discharged into the water and the fish 20 in the fish tank is adversely affected in the water 20 in the fish tank.

In this case, the water 20 in the fish tank is discharged into the water 20 in the fish tank through the discharge hole 52 in the peripheral wall of the acid trachea.
In response to the rising force of air bubbles rising in the inside, the acid trachea 5 at the bottom of the fish tank is moved inside the fish tank 10 as shown by the arrow in FIG.
By using the circulating force of the water 20 that circulates and descends in the 0 direction, the sewage such as fish droppings and residual food discharged into the water 20 in the fish tank is fed along the inside of the fish tank 10 and below the acid trachea 50. 10 Collect water quickly around the water absorption pipe 70 at the bottom.

The waste collected around the water absorption pipe 70 is shown in FIG.
Alternatively, as indicated by an arrow in FIG. 4, the water inlet 7 having a small diameter or a small width on the peripheral wall of the water absorption pipe under the pressure of the water 20 in the fish tank.
Using the suction force generated around the water 20 in the fish tank that flows into the water absorption pipe 70 as a turbulent flow through the water tanks 2, 74, together with the water 20 in the fish tank, the water inlet 72 of the peripheral wall of the water absorption pipe,
It is sucked into the water absorption pipe 70 through 74 and made to flow.

The water 20 containing filth that has flowed into the water absorption pipe 70 is contained in the small chamber 1 in which the end of the water absorption pipe 70 is projected.
The water circulation pump 34 of the circulation means 30 causes the water to flow into the water circulation pipe 32 outside the fish tank 10 through the drainage port 12 on the inner bottom surface of the fish tank. Then, the water 20 containing filth discharged into the water circulation pipe 32 is circulated by the circulation means 3
The water circulation pump 34 of 0 circulates the water circulation pipe 32 to pass through the filtration tank of the filtration means 40 provided in the middle portion of the water circulation pipe 32. Then, after filtering and removing the dirt from the water 20 circulating in the water circulation pipe 32 by the filtering means 40, the water 20 cleaned by removing the dirt.
From the tip of the water circulation pipe 32 again into the fish tank 10.

Thereafter, the above steps are successively repeated to collect the filth discharged into the water 20 in the fish culturing tank around the water absorbing pipe 70 surely and quickly, and collect the collected filth in the fish culturing tank. Water 20 together with the water 20 into the water absorption pipe 70 through the water inlets 72, 74 having a small diameter or a small width on the peripheral wall of the water absorption pipe to flow into the water absorption pipe 70. The water is continuously and surely and quickly discharged through the drainage port 12 into the water circulation pipe 32 outside the fish farm 10. Then, the water 20 containing the filth that has flowed out into the water circulation pipe 70 is circulated in the water circulation pipe 32 by the water circulation pump 34 so as to pass through the filtering means 40 provided in the middle portion of the water circulation pipe 32. Then, the filth contained in the water 20 is eliminated by the filtering means 40, and the filth is eliminated to be purified water 2
0 is continued to flow into the fish tank 10 again from the tip of the water circulation pipe 32.

Then, the water 20 in the fish tank is kept in a clean state containing no dirt for a long period of time, and the fish under breeding continues to grow smoothly in the water 20 in the fish tank.

According to experiments, using the above fishpond, rainbow trout,
If you breed rock fish, Nishikigoi, etc., the water in the fish tank 2
Compared to the conventional fish ponds of the same scale, the period during which 0 is replaced with new water or the water 20 in the fish tank is discharged to wash away the filth accumulated in the bottom of the fish tank 10 is 3 times.
It turned out that it can be extended more than twice. At the same time, it was found that even if the number of fish to be kept in the water 20 in the fish tank is increased three times or more as compared with the conventional fish pond of the same scale, those fish can be smoothly grown.

FIG. 6 is a front sectional view showing another preferred embodiment of the first fish pond according to the present invention, specifically the schematic structure thereof. The fishpond in this figure will be described below.

In the illustrated fish pond, the upper part of the bottom surface of the fish tank 10 having the drainage port 12 is exposed without being covered with the partition wall 14 in the fish tank 10. The end of the water absorption pipe 70 is directly connected to the drain port 12 on the bottom surface of the fish tank exposed in the fish tank 10 so that the inside of the water absorption pipe 70 is directly communicated with the inside of the drain port 12. Then, the water 20 containing filth that has been sucked into the water absorption pipe 70 and flowed thereinto can be directly discharged to the outside of the fish farm 10 through the drain port 12.

Others are the same as those of the first fish pond shown in FIGS. 1 to 5 described above, and the function is that the water 20 in the fish tank rises in water level from the upper end of the fish tank 10. In order to prevent the water 20 from overflowing to the outside, the excess water 20 accumulated in the fish tank 10 cannot be discharged to the outside of the fish tank 10 through the water overflow pipe 18, and the first water flow rate adjusting device shown in FIGS. The fish pond is the same as the fish pond, and the same members are denoted by the same reference numerals and the description thereof is omitted.

FIG. 7 shows a preferred embodiment of the second fish pond according to the present invention, more specifically, a front sectional view showing its schematic structure. The fishpond in this figure will be described below.

In the fish pond shown in the figure, a water supply pipe 82 of a water supply means 80 for supplying the water 20 for fish cultivation from above is provided in the fish tank 10.

A drain port 12 for discharging the water 20 stored in the fish tank 10 to the outside of the fish tank 10 is opened at the bottom corner of the fish tank 10.

Then, water 20 for fish farming is supplied by the water supply means 80.
While continuing to supply the water into the fish tank 10, the water 20 accumulated in the fish tank 10 is continuously discharged to the outside of the fish tank 10 through the drainage port 12 so that the water 20 accumulated in the fish tank 10 has a constant water level. The water 20 stored in the fish tank can be repeatedly replaced with the clean water 20 continuously supplied into the fish tank 10 by the water supply means 80 while being kept at the level.

Others are the same as those of the first fish pond shown in FIG. 6, and its function is to clean the water 20 containing the waste discharged to the outside of the fish tank 10 by the filtering means. It is similar to the first fish pond shown in FIG. 6 except that it is reused as water for fish farming, the same members are given the same reference numerals, and description thereof will be omitted.

Incidentally, in the second fishpond, as shown in FIG.
As in the first fish pond shown in FIG. 1, a small room 16 partitioned by a partition wall 14 having a water overflow pipe 18 is provided around the upper bottom of the inside of the fish tank 10 with the drainage port 12 open. The inside of the water absorption pipe 70 is communicated with the inside of the drainage port 12 through the inside, or like the first fish pond shown in FIG.
The lower part of the water absorption pipe 70 is stably inserted into the recess 76 on the bottom surface of the fish tank 10, or like the first fish pond shown in FIG. 5, a narrow water inlet 74 is provided on the peripheral wall of the water absorption pipe 70. You may

[0063]

As described above, according to the first and second fish ponds of the present invention, the fish dung and residual food discharged into the water in the fish tank and collected at the bottom of the fish tank around the acid trachea. Such as filth,
The water can be sucked into the water absorption pipe quickly and completely, and can be quickly and accurately discharged to the outside of the fish farm. And
It is possible to keep the water in the fish tank in a clean state free from dirt for a long period of time.

Further, according to the first fish pond of the present invention, the water containing the waste discharged to the outside of the fish tank is filtered and purified by the filtering means, and the cleaned water is flowed into the fish tank again. It can be reused as water for fish farming.

[Brief description of drawings]

FIG. 1 is a front sectional view showing a schematic structure of a first fishpond of the present invention.

FIG. 2 is a side sectional view showing a schematic structure of a first fishpond of the present invention.

FIG. 3 is an enlarged side cross-sectional view around a water absorbing pipe of the first fish pond of the present invention.

FIG. 4 is an enlarged side sectional view of the vicinity of the water absorption pipe of the first fish pond of the present invention.

FIG. 5 is a front cross-sectional view showing the schematic structure around the water absorption pipe of the first fish pond of the present invention.

FIG. 6 is a front sectional view showing a schematic structure of a first fish pond of the present invention.

FIG. 7 is a front sectional view showing a schematic structure of a second fishpond of the present invention.

FIG. 8 is a front sectional view showing a schematic structure of a conventional fishpond.

FIG. 9 is a side sectional view showing a schematic structure of a conventional fishpond.

[Explanation of symbols]

 10 Fish Tank 12 Drain Port 14 Partition Wall 16 Small Room 18 Water Overflow Pipe 20 Water 30 Circulating Means 32 Water Circulating Pipe 34 Water Circulating Pump 40 Filtering Means 50 Acid Trachea 52 Discharge Hole 60 Feeding Means 70 Water Absorption Pipes 72, 74 Water Inlet 80 Water Supplying means 82 Water supply pipe

Claims (2)

[Claims] 1. A fish tank containing water for fish culture, a circulation means for circulating the water in the fish tank to the inside and outside of the fish tank through a drain port opened at the bottom of the inside of the fish tank, and the circulation means outside the fish tank. Filtering means for eliminating the contaminants contained in the water circulating, and an acid trachea provided in the bottom part of the fish tank, an acid trachea having an air discharge hole in its peripheral wall, and air in the acid trachea. With a feeding means for feeding, the water in the fish tank is circulated in and out of the fish tank by the circulating means, and while the filth contained in the water circulating outside the fish tank is eliminated by the filtering means, Air is fed into the acid trachea by the feeding means, the air is discharged into the water in the fish tank through the discharge hole of the acid tracheal peripheral wall, and the air is supplied to the water in the fish tank. In the fishpond used, a peripheral wall is provided between the acid trachea and the bottom surface of the fish tank. In the water absorption pipe provided with a small diameter or small width water inlet, provided with a water absorption pipe in communication with the drainage port, is discharged into the water in the fish tank through the discharge hole of the acid trachea peripheral wall By using the water circulation force generated in the water in the fish tank by the rising force of the air bubbles rising in the water, the filth discharged into the water in the fish tank is guided along the inside of the fish tank around the water absorption pipe below the acid trachea. In addition to collecting the water, the water absorption is generated by using the suction force generated around the water flowing into the water absorption pipe as a rapid flow through the water inlet having a small diameter or a narrow width of the water absorption pipe peripheral wall under the pressure of the water accumulated in the fish tank. The filth collected around the pipe is introduced into the water absorption pipe through a water inlet of the peripheral wall of the water absorption pipe together with the water that flows into the water absorption pipe in a rapid flow, and the filth that has flowed into the water absorption pipe together with the water is the circulating means. The inside water pipe is discharged to the fish tank outside through the drain port which is communicated, fish ponds, characterized in that the dirt contained in the water discharged into the fish tank outside and to be removed by the filtering means. 2. A fish culture tank in which water for fish culture is stored, water supply means for supplying water for fish culture in the fish culture tank, and a drainage port for discharging the water stored in the fish culture tank to the outside of the fish culture tank. And an acid trachea provided at the bottom of the fish tank, the acid trachea having an air discharge hole in its peripheral wall, and a feeding means for feeding air into the acid trachea, While supplying water for fish culture into the fish tank by the supply means, the water accumulated in the fish tank is discharged to the outside of the fish tank through the drain port, and the air is supplied into the acid trachea by the supply means. Then, the air is discharged into the water in the fish tank through the discharge hole of the acid tracheal peripheral wall,
In a fish pond used to supply air to the water in a fish tank, a water intake pipe having a water inlet of a small diameter or a narrow width on the peripheral wall between the acid trachea and the bottom surface of the fish tank,
By providing a water-absorbing pipe in communication with the drainage port, the water in the fish tank is expelled by the ascending force of the air bubbles that are discharged into the water in the fish tank through the discharge holes in the acid tracheal peripheral wall and rise in the water in the fish tank. By using the water circulation force generated in the above, the filth discharged into the water in the fish tank is collected around the water absorption pipe below the acid trachea along the inside of the fish tank, and the pressure of the water accumulated in the fish tank is received. The sewage collected around the water absorbing pipe flows into the water absorbing pipe as a torrent by using the suction force generated around the water that flows into the water absorbing pipe as a torrent through the water inlet having a small diameter or a narrow width of the water absorbing pipe peripheral wall. The water that flows into the water absorption pipe through the water inlet on the peripheral wall of the water absorption pipe, and discharges the filth that has flowed into the water absorption pipe together with the water to the outside of the fish tank through the drainage port communicating with the water absorption pipe. Fishponds which is characterized in the thing.