JPH0434690Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a reflux device for refluxing filtered water into an aquarium in which ornamental fish such as tropical fish are grown.

[Conventional technology]

Generally, in an aquarium in which ornamental fish are grown, the water in the aquarium is pumped into a septic tank, where the water is filtered (purified) and then returned to the aquarium. Air is forced into the water tank by the force of the water.

A drainage pipe is provided on the bottom plate of the septic tank to allow the filtered water to flow back into the tank.

[The problem that the idea attempts to solve]

By the way, in conventional aquariums, the top end of the drain tube is positioned above the bottom of the septic tank, and the filtered water that overflows the top end of the drain tube flows into the aquarium from the drain tube. The water flows straight into the water. For this reason, the amount of air that is drawn into the aquarium with the return of filtrate water is small, and the air that is supplied into the water is lifted around the downward flow of filtrate water, resulting in poor air diffusion and a wide area. There is a disadvantage that air cannot be supplied over a wide area.

Furthermore, since the filtered water collides with the water stored in the aquarium at right angles, there is an inconvenience that an extremely high-pitched water noise is generated when the filtered water is refluxed.

Therefore, this invention solves the above-mentioned inconveniences and allows the filtered water to be returned to the water stored in the aquarium very quietly, as well as to supply a large amount of air over a wide area. The technical challenge is to provide a device.

[Means to solve the problem]

In order to solve the above problems, this invention adopts a configuration in which a guide device is connected to the upper part of the drain pipe provided on the bottom plate of the septic tank to allow the filtered water to swirl and flow into the drain pipe.

[Effect]

By connecting a guide to the drain tube and causing the filtrate to swirl and flow into the drain tube, the filtrate descends while swirling inside the guide tube. For this reason, the filtered water flows into the water storage in the water tank in a swirling manner, and the filtered water can be returned very quietly.

In addition, a columnar cavity is formed in the center of the swirling flow of filtrate water, and the air in the cavity is drawn into the reservoir by the force of the circulating filtrate, so a large amount of air can be sent into the reservoir. Along with being able to
Since the swirling flow spreads outward in the stored water, air can be supplied over a wide range.

〔Example〕

Hereinafter, embodiments of this invention will be described based on the accompanying drawings.

As shown in Figure 1, a pump 2 is installed inside the water tank 1.
is incorporated, and the drive motor 3 of the pump 2 is supported by the bottom plate 5 of the septic tank 4 provided on the water tank 1.

Reference numeral 6 indicates a suction pipe of the pump 2, and reference numeral 7 indicates a discharge pipe.The discharge pipe 7 rises upward and is inserted into a hole 8 formed in the bottom plate 5 of the septic tank 4, and the upper end facing into the septic tank 4 is L-shaped. is bent.

Therefore, by driving the pump 2,
The water in the water tank 1 is pumped up and discharged into the pipe 7
The water is supplied from the upper end into a filtration chamber 4a formed in the septic tank 4.

A septic tank 4 is provided on the upper surface of the bottom plate 5 of the filtration chamber 4a.
A plurality of long ribs 9 are provided in double rows in the direction of both ends, and a filter tank 10 is placed on the ribs 9. Further, a porous saucer 11 is supported at the upper end of the filter tank 10, and water discharged from the discharge pipe 7 is supplied into the saucer 11.

The water supplied into the saucer 11 falls into the filter tank 10 from the hole 12 of the saucer 11, and is filtered as it passes through the filter 13 housed in the filter tank 10. This filtered water falls from a drainage hole 14 formed in the bottom plate of the filter tank 10 onto the bottom plate 5 of the filtration chamber 4a.

A drain tube 15 is provided on the bottom plate 5 of the filtration chamber 4a, and the upper end of the drain tube 15 rises from the upper surface of the bottom plate 5, and a guide 16 is connected to the upper end.

As shown in FIGS. 2 to 4, the guide tool 16 is provided with a flange 18 on the outer periphery of the upper end of the cylindrical body 17 that is inserted into the inside of the drain pipe 15.
It has a structure in which a plurality of spiral blades 19 are provided on the upper surface at equal intervals in the circumferential direction, and the bottom surface of the spiral passage 20 formed between the blades 19 has a downward slope toward the inner end. It is sloping.

As mentioned above, the guide tool 16 is attached to the upper end of the drain pipe 15.
By connecting the filtration chamber 4a, the filtered water that falls onto the bottom plate 5 of the filtration chamber 4a is stored on the bottom plate 5 of the filtration chamber 4a up to a height reaching the outer end position of the bottom surface of the hawthorn-shaped passage 20. When the water level of the filtrate increases and exceeds the bottom outer end position of the passage 20, the filtrate flows along the passage 20 and flows into the drain tube 15.

At this time, since the passage 20 is spiral-shaped, the filtered water flows into the drainage tube 15 while swirling, flows downward, and is returned to the water tank 1.

In this way, since the filtered water is returned to the water tank 1 in a swirling state, the collision force against the water stored in the water tank 1 is weak. Therefore, the filtered water can be returned very quietly, and a cylindrical cavity is formed inside the swirling flow of the filtered water, and the air inside the cavity is drawn into the water storage together with the swirling flow. A large amount of air can be pumped into the reservoir. Since the swirling flow of the filtrate diffuses around the stored water, the filtrated water does not reach deep into the stored water, and air can be supplied over a wide area near the surface of the stored water.

In the case of the embodiment, the filtered water is caused to swirl and flow into the drain pipe 15 using the guide tool 16 having the spiral-shaped blades 19, but the guide tool 16 is not limited to this. A cylindrical body connectable to the cylindrical body may have a large number of spiral holes extending from the outer diameter surface to the inner diameter surface in the circumferential direction.

[Effect of idea]

As described above, in this invention, the guide tool connected to the drain pipe allows the filtered water to swirl and flow into the drain pipe, and then flows back into the water tank in a swirled state. The generated water noise can be suppressed to a low level, and a large amount of air can be supplied over a wide range to the water stored in the aquarium.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional front view showing an embodiment of the recirculation device according to the invention, Fig. 2 is an enlarged cross-sectional view showing the mounting portion of the above guide tool, and Fig. 3 is a perspective view of the same guide tool. , FIG. 4 is a plan view of the same. 1...Aquarium, 2...Pump, 4...Septic tank, 5
... Bottom plate, 15 ... Drain pipe, 16 ... Guide tool.

Claims (1)

[Scope of utility model registration request] In a filtrate water recirculation device for an aquarium, the water stored in the aquarium is pumped up into a septic tank provided above the aquarium, subjected to filtration treatment, and the filtrated water is returned to the aquarium from a drain pipe provided on the bottom plate of the septic tank. A filtrate water recirculation device for an aquarium, characterized in that a guide device is connected to the upper part of the drain tube to cause the filtrate to swirl and flow into the drain tube.