JPH10127203A - Circulation type water tank for fishes - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a circulation type water tank for fishes capable of raising water in an amount sufficient to prevent admixture of excrement discharged from fishes with a sand layer or its deposit on the sand layer at a fixed flow velocity by a small- sized driving pump and circulating and cleaning the water. SOLUTION: A supplying and draining water tank 2 is installed at the center in a water tank. Plural dividing tanks 3 radiately divided by plural low partition walls around the supplying and draining water tank at the bottom side of the water tank. A sand layer 1d is formed at the supper side of each dividing tank. A water supplying and distributing plate 2b for distributing cleaned water in the water tank is fixed rotatably horizontally. Upper end inflow holes of plural distributing water supply pipes 2i are arranged at equal intervals on a rotary and moving locus right below a water supplying and distributing hole 2h, respectively. Lower end outlet holes of each supplying and draining water pipe individually correspond to each dividing tank and is connected to the tank to communicate with the tank. A drain tank 2j for discharging contaminated water in the water tank is installed and a drain hole 2k communicating with the drain tank is formed on the peripheral face at the upper part of the supplying and draining water tank. A water supply hole 4a of a water supply pipe 4 is set downward above a supplied water distributing plate 2b. One end of a drain pipe 5 is connected to the bottom of the supplying and draining water tank.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a circulating fish tank for circulating and purifying fresh water or seawater in an aquarium containing live fish with an external purifier, and more particularly to a circulating aquarium for fish. Excretion discharged from fish by dividing the bottom part into a plurality of parts with a low partition wall and supplying and reducing purified water in a rotating manner from one divided tank at the bottom part of the divided tanks The present invention relates to a circulating water tank for fish in which the amount of water sufficient to prevent substances from entering or accumulating in a sand layer is increased at a constant flow rate by using a small drive pump so that circulating purification can be performed.

[0002]

2. Description of the Related Art Conventionally, in a water tank containing live fish, water such as freshwater or seawater in the water tank is polluted by excrement discharged from the fish, and the fish is killed by the polluted water. In order to prevent water pollution, the polluted water is discharged and purified water is sequentially supplied to purify the water in the water tank.

[0003] In the case of discharging polluted water from a water tank and supplying purified water to the water tank, the discharged polluted water is purified by an externally installed purifying device, and circulated and returned again as purified water in the water tank. May be adopted.

[0004]

By the way, there is a disadvantage that the excrement discharged from fish is mixed or deposited in the bottom sand layer. In order to prevent this, a method of generating a certain upward flow from the lower side of the sand layer and raising the excrement mixed or deposited in the sand layer by this upward flow to prevent the excreta from mixing or depositing in the sand layer can be considered, When the size of the water tank becomes large, a small drive pump cannot generate a sufficient upward flow, and a large drive pump is required, which causes an increase in cost.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has been made in order to solve the problems. And the purified water is recirculated from one of the divided tanks on the bottom side of the tank in a rotating manner to prevent the excrement discharged from the fish from being mixed or deposited in the sand layer. It is an object of the present invention to provide a fish circulating aquarium capable of increasing the amount of water required at a constant flow rate by using a small drive pump to purify the fish.

[0006]

In order to achieve the above object, the present invention provides a water supply / drainage tank in the center of the inside of the water tank, and the bottom of the water tank around the water supply / drainage tank has a plurality of heights around the water supply / drainage tank. Radially separated by a low partition wall, a plurality of divided tanks are radially partitioned by a plurality of partition walls on the bottom side of the water tank around the water supply and drainage tanks, and a sand layer is formed on the upper side of each divided tank to be purified. A water supply distribution panel that distributes the discharged water into the water tank is horizontally rotatably driven above the water tank surface above the water supply and drainage tank, and a water supply distribution hole is drilled at a location away from the center of rotation on the bottom of the water supply distribution board Then, the upper inlets of the plurality of distribution water supply pipes are arranged at regular intervals on the rotational movement trajectory immediately below the rotating water supply distribution hole, and the lower outlets of the distribution water supply pipes are individually arranged in each of the divided tanks. Connected and connected, and polluted in the water tank at the bottom of the water supply and drainage tank The drain tank provided for discharging the water,
A drainage hole communicating with the drainage tank was formed on the upper peripheral surface of the water supply and drainage tank, the water supply port of the water supply pipe was facing downward above the water supply distribution board, and one end of the drainage pipe was connected to the bottom of the drainage tank. It consists of means.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described more specifically based on embodiments of the invention shown in the drawings. Here, FIG. 1 is a side sectional view of a fish circulating water tank, FIG. 2 is a side sectional view of a fish circulating water tank, and FIG. 3 is a partially cutaway plan view of the fish circulating water tank.

In the figure, a fish circulating water tank 1 has a circular shape when viewed from a plane, and a water supply / drain tank 2 is provided at a central portion inside the water tank. The water supply / drainage tank 2 has a circular shape when viewed from a plane, and has a structure in which a cylindrical water supply / drainage tank 2 is provided at the center of the inside of the circular fish circulating water tank 1. Inside the circular fish tank 1 around the water supply / drainage tank 2, for example, fish for breeding, before shipment, or before cooking are kept and swim.

A horizontal support plate 2a is mounted on the upper portion of the cylindrical water supply / drainage tank 2, and a water supply distribution board 2b that rotates horizontally is provided above the support plate 2a.
The water supply distribution board 2b has a circular shape when viewed from a plane, and a wall surface 2c is formed around the circumference thereof,
A container for storing water is provided inside the water supply distribution board 2b.

A rotary shaft 2d is attached downward at the center of the water supply distribution panel 2b which is circular when viewed from above, and the lower portion of the rotary shaft 2d is rotatably mounted on the center of the support plate 2a. The water distribution board 2b is supported by the rotating shaft 2d
It is designed to be able to rotate horizontally around the center.

A drive motor 2e for rotating and driving the water distribution board 2b is mounted above the water distribution board 2b. The drive motor 2e is mounted on a mounting plate 2f extending upward from one side surface of the water supply / drainage tank 2.
The tip of the downward rotating shaft of the drive motor 2e has a gear 2g
Is installed.

A female gear meshing with the gear 2g is formed on the entire inner peripheral surface of the wall surface 2c of the water supply distribution board 2b, and is rotated by the driving force of the driving motor 2e.
Meshes with a female gear formed on the inner peripheral surface of the wall surface 2c of the water supply distribution board 2b, thereby rotating the water supply distribution board 2b in a fixed direction about its rotation shaft 2d.

A water supply distribution hole 2h having, for example, a circular hole is formed at a position separated from the center of rotation by a predetermined length on the bottom surface of the water supply distribution plate 2b rotating about the rotation shaft 2d. The predetermined length from the rotation center is the length of the support plate 2 described later.
Each of the distribution water supply pipes 2i, which will be described later, is circularly attached to a and has the same radius as the center of the rotation shaft 2d. The water inside the water supply distribution board 2b is discharged and distributed downward from the water supply distribution hole 2h.

The support plate 2a below the water distribution board 2b has
A plurality of distribution water supply pipes 2i are vertically mounted at equal intervals on the same radius around the rotation axis 2d. Each distribution water supply pipe 2i has, for example, a circular inflow port at its upper end, and the diameter of the inflow port is substantially the same as the diameter of the water supply distribution hole 2h.

By the way, the rotating shaft 2d of each distribution water pipe 2i
Is the same as the distance from the center of rotation of the water distribution plate 2b to the water distribution hole 2h formed in the bottom surface of the water distribution plate 2b, and the radius of the rotating water distribution plate 2b. The water supply distribution hole 2h passes through a position directly above each distribution water supply pipe 2i. Then, the water supply distribution hole 2h of the rotating water supply distribution board 2b is stopped for a predetermined time, for example, several minutes at a position directly above each distribution water supply pipe 2i for supplying water,
During that time, the water supply distribution holes 2h and the respective distribution water supply pipes 2i are in communication with each other.

Each distribution water supply pipe 2 attached to the support plate 2a
i is attached by the same number as the number of divided tanks 3 formed on the bottom side around the water supply / drainage tank 2, and each distribution water supply pipe 2i has its lower end outlet bent in the horizontal direction and one corresponding one. Each divided tank 3 is connected to the bottom side surface and communicates with each divided tank 3.

The lower side of the support plate 2a of the water supply / drainage tank 2 is a cylindrical drainage tank 2j. The drainage tank 2j is a passage for discharging polluted water discharged for purification from around the water supply / drainage tank 2 to the outside of the fish circulating water tank 1. The plurality of distribution water supply pipes 2i are piped and pass through the inside of the drainage tank 2j. The drainage tank 2j also functions as a recovery tank when a part of the purified water supplied to the distribution water supply pipe 2i leaks from the water supply distribution hole 2h of the water distribution board 2b.

A water supply / drainage tank 2j is provided on an upper peripheral surface of the drainage tank 2j.
One or a plurality of drainage holes 2k communicating with the inside of the fish circulating water tank 1 around the water tank 1 are formed. The polluted water inside the fish circulating water tank 1 enters the drain tank 2j through the drain hole 2k, and is once discharged outside through the drain tank 2j, and the discharged water is purified outside (not shown). The water is purified by the device and circulated back to the fish circulation type water tank 1 again.

The bottom part around the water supply / drainage tank 2 at the center of the inside of the fish circulating water tank 1 is radially partitioned by a plurality of low partition walls 1a around the cylindrical water supply / drainage tank 2. In this embodiment, on the bottom side of the fish circulating water tank 1 around the water supply / drain tank 2, there are formed divided tanks 3 divided by eight low partition walls 1 a and divided into eight. Each division tank 3 has a fan-like shape when viewed from a plane.

At the lower side of the fish circulating water tank 1 around the water supply / drain tank 2, a lattice 1b is arranged in an annular plane. The grid 1b is supported at the upper end of each partition wall 1a having a low height and dividing the bottom side of the fish circulating water tank 1 into eight radially divided sections. The inside of the fish circulating water tank 1 around the water supply / drain tank 2 is divided into eight divided tanks 3 by a partition wall 1a on the lower side of the grid 1b.

A water-permeable net 1c is laid on a lattice 1b arranged in an annular shape below the fish circulation water tank 1 around the water supply / drain tank 2. For example, sand is laminated on the net 1c to form a sand layer 1d preferred by fish. The mesh spacing of the water-permeable net 1c is smaller than the grid spacing of the grid 1b and the sand diameter of the sand layer 1d. The sand layer 1 d prevents excrement discharged from fish from settling in the dividing tank 3.

Above the water supply / distribution board 2b of the water supply / drainage tank 2, water purified by a purification device (not shown) provided outside the fish circulation water tank 1 is returned to the fish circulation water tank 1 again. A pipe 4 is provided. The distal end of the water supply pipe 4 is bent downward so that the water supply port 4a faces above the rotation center of the water supply distribution board 2b.

To the bottom of the drainage tank 2j of the water supply / drainage tank 2, one end of a drainage pipe 5 for sending polluted water of the fish circulating water tank 1 to a purification device (not shown) provided outside is connected. Have been. The drain pipe 5 is in communication with the water supply pipe 4 via a purification device (not shown). The water supply pipe 4 and the drain pipe 5 constitute a circulation passage for purifying and returning the polluted water in the fish circulating water tank 1 to its original state.

Further, a driving pump 6 for circulating polluted water in the fish circulating water tank 1 is provided on the way between the water supply pipe 4 and the drain pipe 5 communicating with each other. The polluted water in the circulation tank 1 for fish is
The water is sent to an external purification device (not shown) through the drain pipe 5, and the purified water is circulated through the water supply pipe 4 again into the fish circulating water tank 1 and returned.

Next, the operation based on the configuration of the above embodiment of the present invention will be described below. When the water in the aquarium 1 contaminated with the excrement from the fish kept in the fish circulating aquarium 1 is purified by an external purification device (not shown) and then returned again, the drive motor 2e and the drive The pump 6 is driven.

When the drive motor 2e and the drive pump 6 are driven, the polluted water in the fish circulating water tank 1 is formed on the upper peripheral surface of the drain tank 2j below the water supply / drain tank 2. Flows into the inside of the drainage tank 2j from the drainage hole 2k,
The water is discharged from the bottom of the drain tank 2j into the drain pipe 5.

The polluted water discharged into the drain pipe 5 flows through the drain pipe 5 and is sent to an external purification device (not shown), where it is purified.

The purified water purified by a purifying device (not shown) is pumped through the water supply pipe 4 by the drive pump 6, and is supplied from the water supply port 4 a at the tip of the water supply pipe 4 to the upper part of the water supply / drainage tank 2 below it. It flows down and flows into the distribution board 2b.

By the way, the feed water distribution board 2 into which purified water flows
b is the driving motor 2e driven by the driving motor 2e.
gear 2g fixed to the tip of the rotating shaft of e and the water supply distribution board 2
Due to the meshing with the female gear formed on the entire circumference of the wall surface 2c of b, while rotating temporarily for several minutes for supply, for example, it rotates in a fixed direction about the rotating shaft 2d.

A water supply distribution hole 2h is formed at one position on the bottom surface of the water supply distribution board 2b rotated by the drive motor 2e, and the water supply distribution hole 2h temporarily stops for several minutes for supply. Repetitively, it rotates around the rotation axis 2d at a constant speed.

[0031] Immediately below the locus of rotation of the water supply distribution hole 2h, the upper end inlets of the plurality of distribution water supply pipes 2i are arranged in the circumferential direction, and the rotating water supply distribution hole 2h is arranged in the circumferential direction. Right above the upper inlet of each distribution water pipe 2i
For supply, for example, it passes through while repeatedly stopping for several minutes.

From the water supply port 4a of the water supply pipe 4 to the water supply distribution board 2b
The purified water flowing into the inside is discharged downward from a water supply distribution hole 2h formed in the bottom surface of the water supply distribution board 2b, and the water supply distribution hole 2h is located at the upper end of each distribution water supply pipe 2i arranged in the circumferential direction. Immediately above the inflow port, the water passes through the feed water while repeatedly stopping for a certain period of time, for example, several minutes, so that purified water discharged from the feed water distribution hole 2h is supplied to the plurality of distribution water supply pipes 2h.
In the i, they are equally distributed evenly at the same rate and flow.

The purified water which has been uniformly and evenly distributed into each of the plurality of distribution water supply pipes 2i at the same ratio and flows into the plurality of distribution water supply pipes 2i flows down through each of the distribution water supply pipes 2i. The water flows evenly into each of the divided tanks 3 formed on the bottom side of the circulation type water tank 1.

The purified water uniformly flowing into each of the divided tanks 3 formed on the bottom side of the fish circulating water tank 1 spreads uniformly in the divided tanks 3. Then, the purified water uniformly spread in the divided tank 3 is raised in the divided tank 3 by another purified water continuously flowing in later, and the water-permeable grid 1b laid on the upper surface of the divided tank 3 Then, it passes through the net 1c and enters the sand layer 1d, rises in the sand layer 1d, and returns to the fish circulating water tank 1 from the upper surface of the sand layer 1d.

In this case, the purified water is supplied from below, and the polluted water is discharged from the upper part, so that an ascending flow is generated in the fish circulating water tank 1, and the excrement deposited and deposited on the surface of the sand layer 1d. And the excreta mixed into the sand layer 1d are discharged together with the polluted water from the drain hole 2k at the upper part of the water tank by the upward flow, so that the excreta can be prevented from being mixed or deposited in the sand layer 1d.

For example, in the case of a driving pump 6 having a capacity of 900 liters per minute (circulating water amount), the water is supplied to the divided tank 3 having a division of 6 m ² for 2 minutes and 30 seconds to be 2.25 m ³ , and the flow rate becomes 15 cm per minute. Become. 900 liters × 2.5 minutes ÷ 6 m ² = 37.5 cm Flow rate per minute = 15 cm That is, by giving this flow rate as an upward flow to the sand layer 1d, there is no loss of sand, and only excreta is effectively and evenly distributed. Will be removed.

The purified water is evenly distributed to each of the divided tanks 3 on the bottom side of the fish circulating water tank 1, and flows in from each of the divided tanks 3 on the bottom side. It is replaced and purified by purified water rising from below evenly in the whole area.

In the case of circulating the water in the fish circulating water tank 1 for purification, the purified water is supplied to the distribution water supply pipes 2i by using the water distribution holes 2h of the water distribution board 2b. Evenly distribute the water flow needed to create it,
Since purified water is circulated and returned from the entire area on the bottom side of the fish circulating water tank 1 from each of the divided tanks 3 communicating with the distribution water supply pipes 2i, the circulating drive pump 6 for purification is small. The water in the fish circulating water tank 1 can be circulated and purified without using a large-sized drive pump.

It should be noted that the present invention is not limited to the above embodiment of the present invention, and it is needless to say that various modifications can be made without departing from the spirit of the present invention.

[0040]

As is apparent from the above description, according to the fish circulating water tank of the present invention, the water distribution board provided with the water distribution holes is rotated to supply the water to the water distribution board. Through a plurality of distribution water supply pipes arranged on the rotation locus immediately below the water supply distribution hole that rotationally moves purified water, each of the water tank bottom side divided into a plurality by a low height partition wall at the bottom side in the water tank By supplying purified water to the divided tanks in rotation from one divided tank in a rotating manner, the amount of water sufficient to prevent excreta discharged from fish from entering or accumulating in the sand layer is reduced by a small drive. It can be raised at a constant flow rate using a pump, and it is possible to prevent excrement from being mixed or deposited in the sand layer. As described above, this can be performed using a small drive pump without using a large drive pump, so that an increase in the cost of the entire apparatus can be prevented and the running cost can be reduced. .

Further, since a sand layer is formed on the upper side of each of the divided tanks, it is possible to prevent the excrement discharged from fish from settling in the divided tank into which purified water flows, by the sand layer. By creating a sand layer that is preferred by the fish on the water floor, the environment for the growth of fish can be improved, and a very novel and beneficial effect is achieved.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a fish circulation type water tank showing an embodiment of the present invention.

FIG. 2 is a side sectional view of a fish circulating water tank showing an embodiment of the present invention.

FIG. 3 is a partially cutaway plan view of a fish circulating water tank showing an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Circulating water tank for fish 1a Partition wall 1b Grid 1c Net 1d Sand layer 2 Water supply / drainage tank 2a Support plate 2b Water supply distribution board 2c Wall surface 2d Rotary shaft 2e Drive motor 2f Mounting plate 2g Gear 2h Water supply distribution hole 2i Distribution water supply pipe 2j Drainage tank 2k Drainage hole 3 Split tank 4 Water supply pipe 4a Water supply port 5 Drainage pipe 6 Drive pump

Claims (1)

[Claims] A water supply / drainage tank is provided in the center of the inside of the water tank, and a bottom of the water tank around the water / drainage tank is radially partitioned by a plurality of low-height partition walls around the water / drainage tank, and a bottom of the water tank around the water / drainage tank. A plurality of dividing tanks radially partitioned by a plurality of partition walls are formed, a sand layer is formed on the upper side of each dividing tank, and a water supply distribution plate for distributing purified water into the water tank is an upper side of the water supply and drainage tank. A water supply distribution hole is provided at a position distant from the center of rotation on the bottom of the water supply distribution panel, and a plurality of water supply distribution holes are provided on the rotation path just below the water supply distribution hole that rotates. The upper inlets of the distribution water supply pipes are arranged at equal intervals, and the lower outlets of the distribution water supply pipes are individually connected to and connected to the respective divided tanks, and the lower part of the water supply / drainage tank is polluted in the water tank. A drainage tank for draining water is provided, and the drainage tank is Form a drain hole communicating with the aquarium,
A recirculating water tank for fish, wherein a water supply port of a water supply pipe faces downward above the water supply distribution board, and one end of a water discharge pipe is connected to a bottom of the water discharge tank.