JPS5814976Y2 - Compact filtration tank for live fish transportation equipment - Google Patents

Description

[Detailed description of the invention] The present invention relates to a filter tank, and more specifically, a live fish transportation device with a small volume and high filtration rate, which is composed of a filter cloth folded in a zigzag manner into a predetermined shape and a tank that can accommodate the filter cloth. This relates to a compact filtration tank for use.

The live fish transportation device referred to in the present invention refers to Japanese Patent Application No. 51-86361 and Japanese Patent Application No. 52-6355 previously filed by the applicant.
As shown in the figure, live fish and shellfish are housed at high density in the aquarium,
A device that carries out long-term transportation or cultivation by filling seawater or freshwater depending on the contents, and circulating temperature control, aeration, excrement treatment, etc. in order to make the water viable for live fish and shellfish. It is.

The filtration method or filter tank for this live fish transportation device is as follows:
Must meet the following requirements:

(1) It must be small (small volume).

(2) It must have the ability to collect even fine particles such as (colloidal) excrement from live fish and shellfish.

(3) The filtration capacity should not be reduced by vibrations or shocks during transport.

(4) It is easy to replace and clean after use.

On the other hand, the filtration capacity of the conventional sand filter tank is extremely unstable due to vibrations and shocks, and it is extremely troublesome to perform cleaning inside the device, such as backwashing, and it is difficult to miniaturize the tank. There were disadvantages such as difficulty in

In addition, filter tanks using filter cloth do not have a particular shape or structure, and are used in a way that suits the purpose, but it is currently difficult to use them as they are.

In addition, a strainer containing a zigzag-shaped net is known from JP-A-52-130065, but such a coarse filter medium filters fine particles of about 10 to 100 μ, which are the excrement of live fish and shellfish, and can be reused. It was impossible.

The filter tank according to the present invention is related to a completely new technology that fundamentally improves the drawbacks of the conventional technology and has the above requirements for a filter tank for a live fish transportation device. In a compact filtration tank, an iron frame is inserted and fixed into the tank, and a filter cloth is attached in the direction of liquid flow.
The present invention relates to a compact filtration tank for a live fish transportation device, characterized in that the filter cloth is made of a nonwoven fabric or felt that has self-retaining properties, and is capable of collecting fine particles such as live fish excrement of about 10 μm to about 100 μm. .

To specifically explain one embodiment of the filter tank according to the present invention with reference to the drawings, in Figs. 3 is a tank into which the filter cloth 1 and the frame 2 can be inserted and fixed.

Furthermore, a water absorption pipe 4 and a water supply pipe 5 are installed on the outside of the tank 3.
and are installed.

On the inside, a fixing part 6 is provided which can be fixed simply by inserting the frame 2 from above and can completely block the water absorption side and the water supply side with the filter cloth 1.

Further, a 7-lunge 7 is attached to the upper part that can be completely sealed and can be opened and closed easily.

Further, as the filter cloth, a zigzag folded self-retaining nonwoven fabric or felt is used.

If the filter cloth used to filter particulates is compressed and deformed in the flow direction due to the shear stress caused by the flow of the liquid to be filtered, the filtration ability will decrease. Yes, self-retention is required.

In this regard, non-woven fabric or fabric/? ) has excellent self-retention properties due to its properties, and has the advantage of being less prone to clogging because it can filter fine particles not only on the cloth surface but also inside the cloth.

Further, if necessary, the filter cloth may be stretched over a mesh-like or lattice-like reinforcing plate.

To assemble the filter tank according to the present invention, the filter cloth 1 is fixed to the frame 2, a part of the frame 2 is inserted into the fixing part 6, and placed in the tank 3, and the upper part of the tank 3 is sealed with the flange 1. This can be easily done by doing this.

Further, the filter cloth 1 and the frame 2 can be easily removed from the tank 3 by opening the flange and lifting the frame 2 upward.

In the above embodiment, the filter cloth 1 is bent at a right angle, but it does not need to be bent at a right angle as long as the overall shape is as shown in FIGS. 1 and 2.

The frame 2 does not have to have the shape shown in FIG. 3 as long as it can maintain the shape of the cloth 1 and has a structure with little resistance to water flow.

Moreover, the water absorption pipe 4 and the water supply pipe 5 of the tank 3 may be reversed.

As mentioned above, the filter tank according to the present invention has a small volume and a large filtration area, and holds the filter cloth 1 made of a strong self-retaining nonwoven fabric or felt and the filter cloth 1 against the flow of the liquid to be filtered. In addition, it is constructed with a frame 2 that has little resistance to water flow and a small tank 3 that allows the frame 2 to be taken in and out easily by opening and closing the upper part. It is possible to obtain a filter tank that has the ability to collect fine particles with a size of 10μ to about Zooμ, and whose filtration ability does not deteriorate even when subjected to vibrations and shocks during transportation, and which is easy to replace and clean after use. .

Therefore, by using this as a filter tank for a live fish transportation device, it is possible to achieve much greater effects than conventional ones.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the filter cloth, FIG. 2 is a plan view thereof, FIG. 3 is a perspective view of the frame, and FIGS. 4 and 5 are diagrams showing the structure of the filter tank. 1 is a filter cloth, 2 is a frame, 3 is a tank, 4 and 5 are pipes, 6 is a fixed part, and 7 is a flange.

Claims (1)

[Scope of utility model registration request] In a compact filtration tank, the filter cloth 1 folded in a zigzag manner is fixed to a frame 2, the iron frame 2 is inserted and fixed into the tank 3, and the filter cloth 1 is attached in the flow direction of the liquid. 1. A compact filtration tank for a live fish transport device, characterized in that it is made of a nonwoven fabric or felt that has a retention property and collects fine particles such as live fish excrement of about 10 μm to about 100 μm.