JP3149238B2 - Oxygen replenishment equipment for fishponds - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an apparatus used for replenishing water in a fish pond or a tank for transporting live fish with oxygen.

[0002]

2. Description of the Related Art In general, in fish ponds and fish tanks for transporting fish (hereinafter referred to as fish tanks), the density of fish is high and oxygen in water tends to be insufficient. In order to solve this problem, a method has been conventionally used in which a water wheel is provided on the water surface to increase the contact between air and water. In recent years, the density of fish in an aquarium has been further increased, and the need to efficiently replenish oxygen has increased. Therefore, as shown in FIG.
A pipe having a number of small holes is provided in a fish farming tank, and oxygen is directly supplied from an oxygen cylinder to refill the pipe.

[0003]

However, in the method of releasing oxygen into water from a pipe placed in the water, oxygen is not efficiently absorbed by water, and much of the supplied oxygen floats as bubbles. Until then, there was a problem that it was released into the atmosphere.

[0004]

SUMMARY OF THE INVENTION The present invention provides an oxygen replenishing apparatus capable of suppressing generation of oxygen not absorbed by water as much as possible and efficiently absorbing a large amount of oxygen into water. In the water supply channel 4 connecting the fish tank 3 and the water source 2 ,
A pressure vessel 5 having a pressurized oxygen atmosphere is interposed, and a drip means 8 such as a nozzle or a water wheel for dropping water supplied from the water supply channel 4 into mist or particles is provided in the pressure vessel 5. Another feature is that an oxygen source 6 is connected to the upper part of the pressure vessel 5.

[0005]

In the pressure vessel 5, the water supplied from the water supply pipe 4a is converted into droplets or mist by the lowering means 8 and is brought into contact with the oxygen, which has been pressurized to the atmospheric pressure or higher, which forms the atmosphere. It falls to the bottom, but comes in contact with oxygen during the fall and absorbs it. The water that has fallen rises in the riser 9a under the pressure of the oxygen charged in the pressure-resistant vessel 5, and is supplied into the fish tank 3 via the descender 9c.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. In FIG. 1, reference numeral 1 denotes an oxygen supply device according to the present invention. The oxygen replenishing device 1 is provided in a water supply channel 4 for supplying water from a water source 2 such as a tap or a pump to a fish tank 3.
The oxygen replenishing apparatus 1 is made of a vertical cylindrical pressure-resistant container 5 made of a hardly oxidizable material such as stainless steel or hard synthetic resin.

That is, an oxygen pipe 7 connected to an oxygen cylinder or other oxygen source 6 and a water supply pipe 4 a forming the water supply passage 4 are connected to the upper part of the pressure vessel 5. At the bottom of the pressure-resistant container 5, a water supply pipe 9, which will be described later, which leads to the fish culture tank 3, is provided.
Is open.

Reference numeral 7a denotes a pressure reducing valve attached to the oxygen pipe 7, and the inside of the pressure vessel 5 has an oxygen atmosphere having a pressure of 0.2 kg / cm 2 by the interaction between the pressure reducing valve 7a and a riser 9a to be described later. Set.

Water supply pipe 4 connected to pressure vessel 5
a is open downward at the top of the pressure vessel 5, and a dropping means 8 for dropping water jetted immediately below the water supply pipe 4 a is provided above the pressure vessel 5. In this embodiment, the dropping means 8 is embodied as a conical perforated disk 8a provided so as to partition the pressure vessel 5 up and down. That is, the perforated disk 8a is formed to have a slightly smaller diameter than the inner circumference of the pressure-resistant container 5, and a small annular gap 5 is formed on the outer circumference.
a is formed, and a large number of small holes 8b are provided as a whole.

Therefore, the water jetted from the water supply pipe 4a first strikes the top of the conical perforated disk 8a and is dispersed in the circumferential direction, or falls down from the gap 5a in a scattered and crushed state. In the course of flowing toward the surroundings, a part of the liquid drops from many small holes 8b in the form of drops.

Thus, the water falling through the porous disk 8a becomes droplets or granules, increasing the surface area, increasing the chances of contact with the oxygen forming the atmosphere, and increasing the pressure inside the pressure vessel 5 above the atmospheric pressure. Because of the atmosphere, absorption of oxygen is further promoted.

The mode of the dropping means 8 is not limited to this embodiment, and the porous disc 8a may be rotated around its axis. Further, the perforated disk 8
In order to omit a, provision of a nozzle or a sprayer at the opening of the water supply pipe 4a is also included.

Reference numeral 9 denotes a water supply pipe forming a part of the water supply channel 4. The water pipe 9 is for returning the water that has fallen to the bottom of the pressure vessel 5 to the fish tank 3 and rises vertically from the bottom of the pressure vessel 5 and opens to the atmosphere. Horizontal pipe 9b and horizontal pipe 9
downcomer 9c which extends downward from the other end of b and opens into fish tank 3
It is composed of The height of the riser 9a is set so that the water in the pressure vessel 5 does not overflow with the water pressure.

Here, the reason for opening the upper end of the riser pipe 9a to the atmosphere is that the atmospheric pressure acts on the horizontal pipe 9b and the siphon effect when water falls down the downcomer pipe 9c causes the water pipe 9 to be opened. This is to prevent the water from being sucked into the fish tank 3 and the pressure inside the pressure vessel 5 from dropping to the atmospheric pressure or lower, thereby preventing the absorption of oxygen from becoming worse. In addition, in order to eliminate the siphon effect, instead of the above-described configuration, that is, instead of closing the upper end of the riser 9a, the water flow resistance of the descender 9c is set smaller than that of the riser 9a. Similar effects can be obtained even if the cross-sectional areas of the pipe 9b and the downcomer 9c are set to be relatively large as compared with the ascending pipe 9a.

In this way, the water that has fallen to the bottom of the pressure vessel 5 is raised by the pressure difference between the pressure of the oxygen in the pressure vessel 5 and the pressure in the fish tank 3 (strictly speaking, the horizontal pipe 9b).
a, and falls into the fish tank 3 by its own weight via the horizontal pipe 9b and the descending pipe 9c.

In this embodiment, as described above, the water to be sent to the fish tank 3 is dropped or atomized into the pressure-resistant vessel 5 filled with oxygen at a predetermined pressure to increase the surface area and activate. Send in, contact and absorb in the pressurized state,
By utilizing the pressure of the oxygen, it is sent out from the bottom of the pressure-resistant container 5 to supply water to the fish culture tank 3.

[0017]

As described above, according to the present invention, the entire amount of oxygen supplied to the pressure-resistant vessel 5 is absorbed by the water sent to the fish farming tank 3, and is not directly released into the atmosphere. It is economical without being done. Further, on the water sent to fish aquarium 3 in contact with oxygen in a wide area is a droplet or mist, on the oxygen of the pressure vessel 5 that is pressed higher pressure than the atmospheric pressure, oxygen on the top of pressure vessel 5 Connect source 6
Since, there are effects such as the apparatus can be downsized because there is oxygen in the water added thereto does not require a readily absorbed long contact path.

[Brief description of the drawings]

FIG. 1 is a system diagram of a conventional apparatus.

FIG. 2 is a system diagram corresponding to FIG. 1 showing an embodiment of the present invention.

FIG. 3 is a partially broken external view showing a main part of the apparatus.

[Explanation of symbols]

 Reference Signs List 3 Fish farming tank 4 Water supply path 4a Water supply pipe 5 Pressure-resistant container 6 Oxygen source 8 Dropping means 9 Water supply pipe

Claims (3)

(57) [Claims] 1. A pressure vessel 5 is interposed in a water supply passage 4 connecting a fish tank 3 and a water source 2, and an oxygen source 6 is connected to the upper part of the pressure vessel 5 so that the inside of the vessel is pressurized higher than the atmospheric pressure. Atmosphere, the water supply channel 4 is opened in the upper part of the pressure vessel 5,
An oxygen replenishing device, such as a fish tank, in which a collision plate 8a is provided under the tank to form droplets and an intake port of a water supply passage 4 connected to the fish tank 3 is opened at the bottom of the pressure-resistant container 5. 2. The pressure vessel 5 according to claim 1, wherein
The water supply channel 4 opening at the bottom of the fish tank is provided with a rising pipe 9a extending upward therefrom and opening into the atmosphere, and a descending pipe 9c passing through the rising pipe 9a and turning downward therefrom. Oxygen replenishing devices such as. 3. The pressure vessel 5 according to claim 1, wherein
The water supply pipe 9 opening at the bottom of the pipe has a rising pipe 9a extending upward once, and a series of descending pipes 9 communicating with the rising pipe.
c, and the lower end of the downcomer 9c is connected to the fish tank 3
An oxygen replenishing device such as a fish aquarium which is opened inward and has a water flow resistance of the downcomer 9c set to be smaller than that of the upcomer 9a.