JPH0856527A - Filtering material for apparatus for purifying water tank of aquarium fish - Google Patents

Abstract

PURPOSE: To obtain a filtering material having sufficient filtering area and hardly causing clogging by spirally laminating a fiber sheet obtained by mixing active carbon which is an absorbent for purifying water into a fiber to a flat sheet in folded state. CONSTITUTION: This filtering material 1 is obtained by laminating a fiber sheet 2 mixing active carbon therein in a state folded like corrugated sheet to flat plate-like sheets 3, joining the top of wavy form of the fiber sheet 2 to the sheet 3 by fusion, etc., and spirally laminating. The resultant filtering material 1 is housed in a purifying apparatus so as to pass through water in the direction perpendicularly crossing with continuous direction of wave of the fiber sheet 2 and can obtain sufficient filtering area by space 4 and hardly causes clogging.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter material used in an apparatus for purifying water in a fish tank for ornamental fish.

[0002]

2. Description of the Related Art In an aquarium for appreciating fish, leftover food, fish excrement, and fish body fluid become fine contaminants that cloud the water, and ammonia is generated from excrement. It is well known that the ionic form of NH ₃ is highly toxic to fish.

On the other hand, there is conventionally known a device for purifying water by filtering impurities contained in the water tank by circulating the water in the water tank through a filter material.

Further, in this case, a technique in which a filter medium is used as a breeding place for nitrifying bacteria (filter bacteria) called Nitrosomonas or Nitrobacter (so-called biological filter medium), and ammonia is oxidatively decomposed by the nitrifying bacteria has been conventionally known. (Publication: Japanese Patent Application Laid-Open No. 61-18497, “Animal Diseases and Treatments of Fishes to Know”, issued on August 20, 1991, page 56, etc.).

On the other hand, it is well known that activated carbon is used as an adsorbent for water purification.

As the above-mentioned filtering material, in addition to synthetic resin sponge, porous ceramics (for example, JP-A-63-1).
85329), a mat-like one (for example, JP-A-63-3).
10613), a combination of paper and porous ceramics (for example, JP-A-4-15288), and the like are conventionally known.

[0007]

However, among the above-mentioned filter materials, porous ceramic materials are apt to be clogged and have a problem of increasing water resistance, and sponge-like and mat-like materials are not sufficient. In order to secure a large adsorption area, a large occupied volume is required, and there is a problem that it is difficult to clean any filter material.

[0008]

The present invention has been made in view of the above problems, and a fiber sheet containing activated carbon is bent into a corrugated plate shape and the bent state is maintained. Is used as a filter medium by stacking flat sheet-like sheets on top of each other and further stacking them in a spiral shape.

[0009]

Therefore, according to this invention, the contaminants in the water are captured by passing through the fiber, and the activated carbon mixed in the fiber has the effect of adsorbing the contaminants and ammonia that cause clouding, and The action of oxidative decomposition of ammonia is caused by nitrifying bacteria that propagate in the spaces between the fibers.

In this case, since the fiber sheets are bent in a corrugated plate shape and are stacked in a spiral shape while maintaining the bent state, the surface area thereof is that of a flat plate of the fiber sheet. Equally, there is an effect that a large amount of surface area can be secured as compared with the unit occupied volume.

Further, since the water passes in the direction orthogonal to the continuous direction of the corrugated plate of the filter material of the present invention, it can pass through the voids formed by the gaps between the waves, ensuring a large surface area. However, it does not easily become clogged and has the effect of reducing water resistance.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a diagram showing an entire filter medium of the present invention. This filter medium 1 is manufactured by the following steps. The fiber sheet 2 containing activated carbon is bent into a corrugated plate. Flat sheets 3 (here, acrylic fibers are used) are stacked in a state where the bent state is maintained, and the wave crests of the fiber sheet 2 are joined by means such as welding. The above-mentioned fiber sheet 2 and the flat sheet 3 are joined together and spirally laminated (see FIG. 2).

The above-described filter medium 1 is appropriately housed in a purifying device (not shown) so that water can pass through in the direction orthogonal to the continuous wave direction of the fiber sheet 2 and used. In addition, reference numeral 4 in the drawing is a void formed by the gap between the waves.

[0014]

The present invention having the above construction has the following unique effects. The fiber sheets are bent in a corrugated plate shape, and are laminated in a spiral shape while maintaining this bent state. A filter material that can secure a large surface area is realized.

Since the above surface area can be freely set by the pitch of the wave when the fiber sheet is bent into a corrugated plate shape, it is possible to set the filtration performance and the water flow resistance arbitrarily and accurately. Become.

Since water passes in the direction orthogonal to the continuous direction of the corrugated plate of the filter medium, it can pass through the voids formed by the gaps between the waves, and a large amount of surface area is secured. As a result, a filter material that does not easily become clogged is realized.

If the filter medium is temporarily fixed in a spiral state, the spiral state is released for cleaning, so that the filter medium can be extremely easily cleaned.

[Brief description of drawings]

FIG. 1 is a perspective view of a filter medium of the present invention.

FIG. 2 is a cross-sectional view of the essential parts of the filter medium of the present invention.

[Explanation of symbols]

 1 Filtration material 2 Fiber sheet 3 Flat sheet

Claims (1)

[Claims] 1. A fiber sheet mixed with activated carbon is bent into a corrugated plate shape, flat plate-like sheets are stacked in a state where the bent state is maintained, and these are further spirally stacked. Filter material for appreciation fish tank purification equipment.