JP2002017200A - Water tank for exhibition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an economic water tank for exhibition not requiring a diver to dive in water and to clean the water tank, capable of positively collecting floating substances such as excretion, a remaining feed, etc., by utilizing a water current effect, not requiring a biofilter tank of separate placement. SOLUTION: This water tank 1 for exhibition comprises a tank main body 2, an organism filtration layer 3 laid at the bottom part of the tank main body 2, a supplementing water supply means 4 for supplying water to the tank main body, an upper water discharging means 5 for discharging water in the tank main body from the top part, an upper treating water supply means 6 for supplying treating water of discharged water to the tank main body 2 and an upper air supply means 7 for supplying air to the tank main body. A support 8 for supporting the organism filtration layer 3 is installed in the vicinity of the bottom part of the tank main body and a bottom treating water supply means 9, a bottom air supply means 10 and a lower part water discharging means 11 which is passed from the top of the organism filtration layer through the organism filtration layer and the support and extended to the bottom of the tank main body.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aquarium for breeding and displaying aquatic organisms in an aquarium, a fisheries test site, a hotel or other service facilities.

[0002]

2. Description of the Related Art In a conventional display tank, as shown in FIG. 3, as an example, at the bottom of the tank (21), live bacteria which decompose ammonia in night soil into nitrite and nitrate are easily inhabited. Gravel with a particle size of 2 to 4 mm is spread over the whole surface and a biological filtration layer
(22) is formed. For this reason, the filth excreted from the breeding aquatic organisms and the residual food of the food periodically supplied to the aquatic organisms accumulate on the surface of the biological filtration layer. In order to remove the accumulation, a diver dives periodically into the water and cleans the inside of the tank to a degree that does not cause any problems in the viewing. However, underwater cleaning by such a diver is extremely troublesome. In FIG. 3, the support layer (25) supporting the biological filtration layer (22) is made of gravel having a large particle size (for example, the upper layer has a particle size of 4 to 8 mm and the lower layer has a particle size of 8 to 12 mm). In the support layer (25), a treated water supply means (26) is provided in a grid pattern over the entire bottom portion, and the treated water supplied by the means (26) flows upward in the biological filtration layer (22).

In order to avoid such troublesome underwater cleaning by a diver, in the exhibition aquarium shown in FIG. 4, a biofilter tank (separate from the aquarium (21)) is installed so as to prevent remaining food and the like from collecting on the surface of the biological filtration layer. 23) is provided, where the wastewater that has passed through the biological filtration layer (22) is treated. The biological filtration layer (22) is made of rough gravel so that the waste can flow out of the discharging means to the extent that there is no problem in ornamentation. Waste is removed from the bio filter tank (2
Although collected in the biological filtration device (24) in 3), this waste is removed by flowing backwash water from the bottom of the tank.

However, in this system, the number of devices increases, the system becomes complicated, and there is a problem in economy.

[0005]

DISCLOSURE OF THE INVENTION In view of the above situation, the present invention does not require a diver to dive into water and clean the inside of a tank, and actively uses suspended water such as excrement and residual food by utilizing a water flow effect. It is an object of the present invention to provide a display tank that can be collected and collected economically and does not require a separate biofilter tank.

[0006]

An exhibition tank according to the present invention.
(1) The tank body (2) for breeding and displaying aquatic organisms, and the tank body
A biological filtration layer (3) provided at the bottom of (2) and biologically treating ammonia generated from human excreta and residual food, etc .; and a makeup water supply means for supplying water to the top of the tank body. (4), upper water discharge means (5) for discharging water in the tank body from the top by overflow, and treated water purified from the discharged water to the breeding display area (18) in the tank body (2) In the exhibition tank with upper treated water supply means (6) and upper air supply means (7) for supplying air to the breeding display water area (18) of the tank body, a biological filtration layer (3) is provided near the bottom of the tank body. A support (8) is provided to support the bottom of the tank below the support (8)
A bottom treated water supply means (9) for supplying treated water to (17), a bottom air supply means (10) for supplying air to the tank bottom water area (17),
At least one lower water discharge means penetrating the biological filtration layer and the support from the upper surface of the biological filtration layer to the bottom of the tank body
(11) is provided.

The upper treated water supply means (6) for supplying treated water to the breeding display water area (18) of the tank body (2) comprises a breeding display water area (18).
To form a swirling flow.

[0008]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention.

In FIG. 1, an exhibition aquarium (1) is provided at the bottom of the aquarium body (2) for breeding and displaying aquatic organisms, and is derived from aquatic organisms excrement and residual food. A biological filtration layer (3) for biologically treating the ammonia generated by the treatment, a makeup water supply means (4) for supplying water to the top of the tank body, and an upper water discharge means for discharging water in the tank body from the top by overflowing (5) and the treated water obtained by purifying the discharged water
Upper treated water supply means for supplying the breeding display area (18) in (2)
(6) and upper air supply means (7) for supplying air to the breeding display water area (18) of the tank body. This exhibition tank supports the biological filtration layer (3) near the bottom of the tank body.
(8), a bottom treated water supply means (9) for supplying treated water to the tank bottom water area (17) below the support (8), and a tank bottom water area (1).
A bottom air supply means (10) for supplying air to 7) and at least one lower water discharge means (11) which penetrates the biological filtration layer and the support from the biological filtration layer upper surface and reaches the tank body bottom surface are provided. .

[0010] The biological filtration layer (3) comprises a grid-like support (8).
It comprises a support bed (12) formed thereon via a plastic net (19) and a filtration bed (13) provided thereon. The supporting floor (12) is made of, for example, a gravel of 8 to 12 mm having a thickness of about 100 mm.
mm and lower gravel layer, for example, 4 to 8 mm
And an upper gravel layer spread about 100 mm in thickness. The filtration bed (13) is made of, for example, gravel having a particle size of 2 to 4 mm and having a thickness of about 300 mm and is spread over the entire surface.

The upper water discharging means (5) comprises a drainage recess (15) provided at the top of one side of the display water tank (1), and a drainage pipe for guiding overflow wastewater out of the recess.

As shown in FIG. 2, the upper treated water supply means (6) is composed of water supply pipes (14) vertically arranged at the four corners of the breeding display water area (18). 14) has a plurality of nozzles oriented in a direction along the right side wall. Breeding display water area by nozzle water injection from these water supply pipes (14)
A swirling flow is formed at (18).

The bottom treated water supply means (9) mainly comprises a header pipe and a plurality of branched water supply pipes having a number of nozzles.

The bottom air supply means (10) is arranged in a grid pattern over the entire area of the tank bottom water area (17) and is constituted by an air supply pipe having a number of upward nozzles.

The lower water discharging means (11) is formed of a cylinder vertically arranged on the bottom of the tank body (2) so as to penetrate the biological filtration layer and the support from the upper surface of the biological filtration layer and reach the bottom of the tank body. On its upper surface, a plurality of holding stones (16) are placed so that aquatic organisms do not enter.

In the display water tank (1) having the above structure, a part of the treated water is supplied to the tank bottom water area by the bottom treated water supply means (9).
The remaining water is supplied to the breeding display water area (18) by the upper treated water supply means (6). Bottom treated water supply means
(9) The treated water supplied from the biological filtration
(3), untreated ammonia and nitrite in the treated water are decomposed into nitrite and nitrate during passage, and after passing, circulate as upward flow in the breeding display water area (18), It is mixed with the supply water from the upper treated water supply means (6). Part of the water in the breeding display water area (18) is the drainage recess (1) in the display tank (1).
After overflowing from 5), the remaining water is discharged from the upper water discharging means (5), and the remainder is discharged from the lower water discharging means (11). Aquatic organisms and biological filtration layer in the breeding display area (18)
(3) Oxygen required for living bacteria inhabiting the upper air supply means
(7) and the bottom air supply means (10) are periodically supplied to the breeding display water area (18) and the tank bottom water area (17), respectively.

Feeding of aquatic organisms is regularly carried out in the breeding exhibition area (1
8) Made from the top, and in some cases underwater by divers for ornamental use. Most of the food enters the body of aquatic organisms, but the remaining food is deposited on the surface of the biological filtration layer (3). Part of the excretion of aquatic organisms also accumulates on the surface of the biological filtration layer (3).

The accumulated residual food, excrement, etc., close the upper treated water supply means (6) and temporarily flow all the treated water to the bottom treated water supply means (9) when there is no nighttime audience. To increase the upward flow velocity and
(7) is closed and a large amount of air is flowed into the bottom air supply means (10) to float the accumulated excreta in an upflow, and overflow from the drainage recess (15) of the exhibition tank (1) to drain the top water. means
(5) Discharge from

The suspended matter in the display water tank (1) is slowly swirled in the tank by the swirling flow formed by the treated water supply means (6), is collected at the center by the swirling flow effect, and is discharged to the lower water discharging means. Sucked in (11). Objects having a relatively small specific gravity are quickly moved to the drainage recess (15) of the exhibition tank (1) by this swirling flow effect, and overflow therefrom to be discharged from the upper water discharge means (5).

[0020]

According to the present invention, the following effects can be obtained by the above configuration.

1) By utilizing the rising power of air and the rising power of treated water, it is possible to automatically remove residual food, excrement, and the like deposited on the surface of the biological filtration layer (3). This eliminates the trouble of diving underwater and cleaning the inside of the tank, thereby facilitating maintenance.

2) It is economical because there is no need to install equipment such as a biofilter tank, and the system is simple.

3) The treated water supplied to the tank bottom water area (17) below the support (8) by the bottom treated water supply means (9) passes through the biological filtration layer (3) and is not treated during the passage. Since the ammonia is decomposed, the water in the breeding display water area (18) is made suitable for breeding and ornamental aquatic organisms.

4) The suspended matter in the display water tank (1) is collected at the center by the swirling flow formed by the treated water supply means (6), is sucked into the lower water discharge means (11), and has a relatively specific gravity. Objects with a small size are quickly moved to the drainage recess (15) and discharged therefrom, so that the number of circulations of water in the exhibition tank (1) can be reduced and power costs can be reduced. Can be dramatically improved.

[Brief description of the drawings]

FIG. 1 is a vertical sectional view of an exhibition tank showing an embodiment of the present invention.

FIG. 2 is a horizontal sectional view of the water tank of FIG.

FIG. 3 is a vertical sectional view of a display tank showing a conventional example.

FIG. 4 is a vertical sectional view of a display tank showing a conventional example.

[Explanation of symbols]

 (1): Breeding display tank (2): Tank body (3): Biological filtration layer (4): Supply water supply means (5): Upper water discharge means (6): Upper treated water supply means (7): Upper Air supply means (8): Support (9): Bottom treated water supply means (10): Bottom air supply means (11): Lower water discharge means (17): Tank bottom water area (18): Rearing display water area

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shuji Nagao 1-7-89 Minami Kohoku, Suminoe-ku, Osaka-shi Inside Tachibashi Shipbuilding Co., Ltd. (72) Inventor Tsuyoshi Ogawa 1- 7-89, Minami Kohoku, Suminoe-ku, Osaka-shi No. Date T-Shipbuilding Co., Ltd. F-term (reference) 2B104 CA03 CA04 CB23 CB30 EA01 EB04 EB05 ED02 ED06 ED15 ED16 ED19 EE05 4D003 AA01 AB02 AB08 BA00 DA04 DA15 DA30 EA22

Claims (2)

[Claims] 1. A tank body (2) for breeding and displaying aquatic organisms, and provided at the bottom of the tank body (2) for biologically treating ammonia generated from the excrement and excrement of aquatic organisms. Biological filtration layer (3), replenishment water supply means (4) for supplying water to the top of the tank body, upper water discharge means (5) for discharging water in the tank body from the top by overflow, and purification of discharged water Upper treated water supply means (6) for supplying treated water to the breeding display area (18) of the tank body (2), and upper air supply means (7) for supplying air to the breeding display area (18) of the tank body ), A support for supporting the biological filtration layer (3) near the bottom of the tank body (8)
A bottom treated water supply means (9) for supplying treated water to the tank bottom water area (17) below the support (8), and a bottom air supply means (10) for supplying air to the tank bottom water area (17). ) And at least one lower water discharge means (11) penetrating the biological filtration layer and the support from the upper surface of the biological filtration layer and reaching the bottom of the tank main body. [2] The treated water is bred and displayed in the tank body (2).
The upper treated water supply means (6) to supply to the breeding display area (18)
The display tank according to claim 1, wherein a swirling flow is formed in the tank.