JPH0675458B2 - Bubble separator for live fish tank - Google Patents

Description

TECHNICAL FIELD The present invention relates to an air bubble separation device used for purifying water in a live fish tank in aquaculture.

BACKGROUND OF THE INVENTION In raising seedlings or fry for aquaculture, an artificial pond or an aquarium (hereinafter referred to as "live fish tank") is used. Generally, in consideration of feeding a large amount of fish with a small amount of water and controlling the water temperature, the water in the live fish tank is purified, circulated and reused.

In this circulation system, the water quality of the live fish tank produces excrement of fish, residual food, or microbial contaminants of microorganisms (proteolytic bacteria, nitrifying bacteria, etc.) that propagate there.

In order to avoid the influence of these wastes on the dietary feeding of the fish in the live fish tank, it is common practice to install a biological tank in the circulation process of the live fish tank to remove the wastes from the water returned to the live fish tank. There is.

However, such a conventional technique has many disadvantages such as a large amount of waste in the wastewater sent from the live fish tank, resulting in a large load of removal due to biological excess and widening the occupied area of the biological excess tank. .

[Object of the Invention] In view of the above-mentioned problems that are required to be solved by the prior art, the main object of the present invention is to provide the inside of the live fish tank with the contaminated water from the live fish tank. Provide a bubble separation device for live fish tanks that is used to purify water in live fish tanks that temporarily passes contaminated surface water in To do.

Further, the objects and effects of the present invention will be fully understood by the following description in the specification.

[Structure of the Invention] The present invention will be specifically described with reference to the accompanying drawings. FIG. 1 is a flow chart for explaining the conventional purification process of a live fish tank. As shown in the figure, the water in the bottom of the live fish tank 10 or in the tank is sucked by a pump 14 through a conduit 12 and sent to a well-known biological filter tank 16 provided outside the live fish tank 10.
The water passed by the biological persever 16 is adjusted to a desired temperature by the heat exchanger 18, and then the water is sterilized and oxygen is replenished via the O ₃ generator 20 and supplied to the live fish tank 10 again. It

According to the process described above, in the live fish tank 10, in order to supply water containing suspended solids contaminated by residual food or excrement of fish to the biological over tank 16, the burden on the biological overlayer 16 is extremely large. It has the problem of becoming large.

In order to solve the above problems, the present invention provides a bubble separating device 30 arranged in the live fish tank 10. As shown in FIG. 2, the bubble separating device 30 opens at the bottom of the live fish tank 10. An inner chamber 32 that is directly connected to the conduit 12 and stands upright above the water surface of the live fish tank 10 and an outer casing 34 that surrounds the inner chamber 32 with a space therebetween are provided.

A plurality of openings 36 are provided in the upper part of the peripheral wall of the outer casing 34 in order to allow the surface water of the live fish tank 10 to flow between the peripheral wall and the inner chamber 32. In order to pass this superficial flow, a material 38 is provided between the peripheral wall of the outer casing 34 and the outer peripheral wall of the inner chamber 32 as a material accommodating chamber supported by a lattice shelf member 40.

The lower part of the lattice shelf member 40 that supports the material 38 is partitioned by a partition wall 42 that is formed so as to form a funnel-shaped cavity for containing the water that has passed through the material 38. A plurality of inflow ports 44 are provided in the peripheral wall of the inner chamber 32 in the vicinity of the lower end of the funnel-shaped partition wall 42, and the water temporarily passed by the material 38 through the inflow port 44 is used for the inner chamber 32. Sent in.

In the inner chamber 32, below the inlet 44, there is a suitable distance A (eg
Nozzle 46 for injecting mixed water upward is provided. The nozzle 46 is connected to a bubble generating device 48 provided outside the live fish tank 10.

In the space A between the inflow port 44 of the inner chamber 32 and the mixed water injection nozzle 46, the suspension of the surface water of the live fish tank 10 containing the soluble protein as the main component is the mixed water injection nozzle. 46
In contact with the air from, soluble proteins, etc. form bubbles that are hard to disappear and are sequentially sent out to the upper part of the internal chamber 32,
It can be removed from the top 50 by any suitable means.

Further, an opening 52 for allowing water in the bottom layer of the live fish tank 10 to flow into the inside is provided in the lower peripheral wall of the outer casing 34, and the inner chamber 32
And the conduit 12 is made to flow into the conduit 12 through an opening 54 provided at the connecting portion.

[Operation and Effect of the Invention] As is apparent from the above-described configuration, the bubble separating device for a live fish tank of the present invention sucks the contaminated water in the live fish tank by using a pump to an external over tank. In the circulation system in which the sent and passed water is returned to the original live fish tank again, before the water in the live fish tank is sent to the external over tank, the contaminated surface water is temporarily By contacting the suspension containing mainly soluble protein with air after the filtration, the soluble protein is bubbled to remove it from the remaining water. It can be purified and the external burden can be significantly reduced.

Furthermore, the air bubble separator for live fish tanks according to the present invention is a specific device for aerating and removing contaminants mainly from the above-mentioned primary filter and soluble protein from residual water, and has a simple structure. However, it is effective in achieving the intended purpose.

[Brief description of drawings]

FIG. 1 is a flow chart for explaining a circulation system for a live fish tank which is generally carried out, and FIG. 2 is a vertical sectional view of an apparatus of the present invention. The main reference numerals in the figure are as follows. 10 …… Live fish tank 12 …… Conduit 14 …… Pump 16 …… Biological tank 30 …… Bubble separator 32 …… Internal chamber 34 …… External casing 38 …… Material 46 …… Mixed water injection nozzle 48 …… Bubble generator

Claims (1)

[Claims] 1. An outer casing disposed inside a live fish tank, an inner chamber disposed upright inside the outer casing, and the outer casing and the inner portion above the outer casing and the inner chamber. In order to dispose the material between the chamber and the chamber, it is attached to the internal chamber by a partition formed in the shape of a funnel in the shape of a funnel, and a funnel-shaped cavity is provided below the material, A plurality of openings are provided on the peripheral wall of the outer casing for introducing water from the surface layer of the live fish tank on the surface, and the water that has passed through the material is guided from the funnel-shaped space to the inner chamber. For this purpose, a plurality of inflow ports are provided on the outer periphery of the inner chamber, and a nozzle is provided below the inflow port of the inner chamber for injecting a mixed water of water and air upward, When a part of the water in the inner chamber is made into bubbles, It fitted with a means for removing the air bubbles to the upper end of the chamber and, that the bubble separating apparatus live fish tank consisting of connecting the discharge means for removing the bulk water to the lower end of the inner chamber.