JPH09131145A - Filter device for fish-raising tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a filter device for fish-breeding water tank causing no clogging in a filter element, requiring no cleaning operations for a long time and capable of feeding enough oxygen into water and maintaining good water quality. SOLUTION: This filter device for a fish-raising tank specifically consists of a filter unit 1 having a conical surface and consisting of a thin filter element, a precipitation decomposition vessel 2 which is connectedly installed under the filter unit, inlet tube 4a and 4b which lead from the top of the filter unit to above the water surface and a storage pump 6 which sucks water in the water tank, feeds water to the top opening of the inlet tube and circulates water. Almost all dusts in water introduced into the filter unit 1 through the inlet pipes 4a and 4b precipitate in the precipitation decomposition vessel 2 and are decomposed by microorganisms, thus, the filter element generates little clogging and good water quality can be maintained for a long time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter device installed and used in an aquarium for breeding fish such as goldfish and tropical fish.

[0002]

2. Description of the Related Art A conventional filtration device for purifying water in a fish tank has a filter material provided on the entire bottom surface of the tank, and all water sent by a pump passes through the filter material and is separated from the water. The filth was collected by the filter medium. As a result, the load on the filter medium becomes high, resulting in severe clogging and a large-scale work required for cleaning.

[0003] In another example, a porous cylindrical filter medium is used, but this has a small filtration area and is also heavily clogged.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and its object is to prevent clogging, to eliminate the need for cleaning work for a long time, and to submerge it in water. Another object of the present invention is to provide a filter device for a fish breeding aquarium, which is capable of sufficiently supplying oxygen to maintain good water quality.

[0005]

The above object is to provide a conical surface-shaped filter section made of a thin filter medium, a settling decomposition tank provided at the lower end of the filter section, and a top of the filter section leading to the water surface. This can be achieved by a filter device for a fish breeding aquarium, which comprises an introducing pipe and a pump for sucking water in the aquarium and supplying and circulating it to the top opening of the introducing pipe. With such a filter device, most of the wastewater in the water introduced into the filtration section through the introduction pipe settles in the settling / decomposition tank provided at the lower end of the filtration section and is decomposed by microorganisms. The filter material is unlikely to be clogged, and good water quality can be maintained for a long period of time.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings. FIG. 1 is an explanatory view showing an embodiment of a filter device for a fish breeding aquarium according to the present invention in its use state, and FIG. 2 is an explanatory view showing a state when a filter medium is washed. In the figure, 1 is a conical filtering part made of a thin filter material such as porous plastic, 2 is a settling decomposition tank provided at the lower end of the filtering part, and 3 is porous ceramics packed in the settling decomposition tank. Microbial medium material 4a and 4b
Is an inlet pipe leading from the top of the filter to the surface of the water, 5 is a float,
6 is a pumping pump, 7 is a pumping pipe connected to the pump, 8 is a strainer for preventing aquatic plants and young fish from being sucked into the pump, 9 is a discharge pipe connected to the pump, and 10 is a household oil pump .

In use, this filter device is submerged in a water tank for raising fish, and installed so that the tip of the introduction pipe 4b projects above the water surface. Introducing pipes 4a and 4b are connected so as to be telescopically slidable so as to correspond to the depth of water. Water near the bottom of the aquarium containing spoilage-causing substances such as fish dung and uneaten food is pumped up by the pumping pump 6 through the strainer 8 and the pumping pipe 7, and discharged from the tip of the discharge pipe 9 into the introducing pipe 4b. It The pumping pump 6 may be a submersible pump. On the water surface in the introduction pipe 4b, a float 5 of a color that is easily noticeable is floated, and it is easy to confirm the degree of clogging of the filter medium of the filtration unit 1 by the drop between the water surface in the introduction pipe 4b and the outside water surface. It is desirable that the water discharged from the discharge pipe 9 hits the float 5 and breaks, so that more oxygen in the air can be taken in.

The water that has flowed into the filtration unit 1 through the introduction pipes 4a and 4b flows out of the filtration unit, leaving the fish dung and the like contained therein. The filtering part 1 is composed of a thin porous filter material formed by, for example, forming polyethylene particles into a conical surface shape, and can be repeatedly used any number of times by washing the attached dirt. Thus, fine spoilage-causing substances contained in water are captured by the filter medium 1, but relatively large substances settle and accumulate in the sedimentation decomposition tank 2. A large number of microbial medium materials 3 made of porous ceramics having a large surface area are stored in the sedimentation and decomposition tank 2 so that the microorganisms can be easily proliferated. While being decomposed, harmful substances such as ammonia contained in water are also absorbed and used for the growth of microorganisms and purified. in this way,
Since a large causative substance is decomposed in the settling / decomposing tank 2 and decomposed, the amount of filth collected in the filter medium 1 is significantly smaller than that in the case of the conventional filter device, and clogging occurs for a long time. It is possible to continuously use the device without using it.

When the filter medium 1 becomes clogged due to long-term use, each part may be disassembled and washed, but as a simple method, as shown in FIG. 2, with the filter device installed in the water tank. It is also possible to remove the dirt attached to the filter medium 1 by using the household oil pump 10 or the like. That is, the plug 11 is fitted to the tip of the introduction pipe 4b, the suction pipe 10a of the oil pump 10 is inserted into the inside of the filtration unit 1, and the pump is operated to pump out and discharge the water in the filtration unit. In that case, water flows from the outside to the inside of the filter medium 1, and the dirt attached to the inner surface of the filter medium is separated from the filter medium and is discharged together with the water by the pump 10. By performing such backwashing operation from time to time, the number of times of troublesome disassembly and cleaning can be significantly reduced.

[0010]

Since the present invention is constructed as described above, according to the present invention, there is little clogging of the filter medium, it is not necessary to carry out cleaning work for a long period of time, and oxygen is sufficiently supplied into water. A filter device for a fish breeding aquarium capable of maintaining good water quality for a long period of time.

The present invention is not limited to the above embodiment, and for example, the introduction pipes 4a and 4b and the precipitation decomposition tank 2 can be used.
The shape, the type of the microorganism culture medium 3 and the like can be appropriately changed within the scope of the object of the present invention, and therefore, the present invention includes all the modified examples that can be easily conceived by those skilled in the art from the above description. It is a thing.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing one embodiment of a filter device for a fish breeding aquarium according to the present invention in its use state.

FIG. 2 is an explanatory diagram showing a state during cleaning of the filter medium.

[Explanation of symbols]

 1 Filtration part (filter material) 2 Precipitation decomposition tank 3 Microbial medium material 4a, 4b Introducing pipe 5 Float 6 Pumping pump 7 Pumping pipe 8 Strainer 9 Discharging pipe 10 Domestic oil pump

Claims (4)

[Claims] 1. A conical filtering part (1) made of a thin filtering material.
And a settling / decomposing tank (2) connected to the lower end of the filtration section, and an introduction pipe (4) communicating from the top of the filtration section to the water surface.
a, 4b) and a pump for pumping fish (6) for sucking water in the water tank, supplying the water to the top opening of the introducing pipe, and circulating it. 2. The filter device for a fish breeding aquarium according to claim 1, wherein the microbial medium material (3) is housed in the sedimentation and decomposition tank (2). 3. The fish breeding aquarium filter device according to claim 1, wherein the introduction tube (4a, 4b) contains a float (5). 4. The fish according to claim 1, wherein the inner diameter of the introduction pipe (4a, 4b) is larger than the outer diameter of the suction pipe (10a) of the domestic oil pump (10). Filter device for breeding aquarium.