JPH0222013Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a filtration device, and more particularly, to a filtration device for a fish tank.

[Prior art and its problems]

Conventionally, when raising various ornamental fish in an aquarium, a filtration device is installed in the aquarium to filter out impurities such as fish excrement in the water, and air is mixed into the filtered water to make the aquarium water. It is known that it is necessary to maintain it in a clean state at all times.

For example, as is clear from FIG. 5, this type of filtration device uses aquarium water introduced from the bottom water intake port 3 and top water intake port 5 of the container body 1, respectively, through a bottom filter medium 7 such as small gravel and a cotton-like filter. The filtered water obtained by passing through the main filtering material 9 is refluxed through the water return port 13 at the center of the top along with air bubbles generated from the air stone 11 disposed at the center of the container body 1.

[Problem that the invention attempts to solve]

By the way, in this type of filtration device, if the filter material becomes dirty or clogged with aquarium water,
The container body is disassembled to clean or replace the filter media, but this work is not only troublesome, but also causes the small gravel that serves as the bottom filter material to be scattered when the container body is disassembled or washed. It had the following problems.

[Means for solving problems]

Therefore, in this invention, in order to solve the above-mentioned problems, a lid body with a large number of water passage holes is attached to the bottom filter medium of the container body, and an air passage connected to the external air supply system is installed in the center of the lid body. The purpose is to simplify the work of cleaning or replacing each filter medium by storing the filter medium in an annular cassette container with protruding stones and a large number of water holes at the top and bottom.

In this case, the filtration efficiency can be improved by forming the main filter medium with a plurality of annular filters each having a different density, and stacking these annular filters in order from the top to the bottom of the cassette container so that the density increases. .

[Effect]

In the filtration device according to this invention, the aquarium water introduced from the top water intake port of the container body is filtered by the main filter medium before reaching the bottom water hole through the top water hole of the annular cassette container, and The aquarium water introduced from the bottom water intake is similarly filtered by small gravel before reaching the water hole in the lid body, and this filtered water is sent to the aquarium through the water return port along with air bubbles generated from the air stone. It is something that is refluxed into the interior.

〔Example〕

Next, preferred embodiments of the filtration device according to the present invention will be described in detail below with reference to the accompanying drawings.

1 and 2, the filtration device according to the present invention has a large number of water intake ports 20 in the radial direction of the bottom, an air supply part 22 protruding from the center, and a small filter medium inside. It has a container main body 34 consisting of a dish-shaped base 26 containing gravel 24 and a lid part 32 attached to the dish-shaped base 26 and equipped with a top water intake port 28 and a top water return cylinder 30. A base lid 38 (see FIG. 3) having a large number of water passage holes 36 is mounted on the gravel 24, and a main filter medium set 40 is disposed on the lid 38. The air stone 44 is inserted into the central hole 42, and the air stone 4
4 and the air supply section 22 are communicated with each other.

The main filter medium cassette 40, as shown in FIG.
Annular container 4 with a filtered water rising path 46 formed in the center
A main filter medium 50 is accommodated in the inside of the main filter medium 50, and a tapered ring recess 52 communicating with the ascending path 46 is formed at the bottom, and a large number of water passage holes 54 are opened in the ring recess 52. A lid member 58 having a large number of water holes 56 is attached thereto. In this case, the main filter medium 50
For example, it is preferable to form three types of annular filters 50a, 50b, and 50c with different densities, and to stack these annular filters 50a, 50b, and 50c sequentially from top to bottom so that the densities become higher. (See Figures 1 and 2).

In the filtration device according to the present invention configured as described above, impurities such as fish excrement in the aquarium water introduced from the top water intake port 28 of the container body 34 are removed from the water flow hole 56 of the main filter medium cassette 40 through the bottom water flow hole. 54, the annular filters 50a, 50b,
50c, while the aquarium water introduced from the bottom water intake port 20 is filtered through the water passage hole 36 of the base lid body 38.
The aquarium water, which has been filtered and purified in this way, is filtered in the same way by the small gravel 24 in the dish-shaped base 26, and the aquarium water, together with air bubbles generated from the air stone 44, is passed through the ascending path 46 of the main filter medium set 40. The water is then returned to the water tank via the water return cylinder 30 of the lid 32 (see FIGS. 1 and 2).

In addition, if the main filter medium 50 becomes clogged due to filtration of impurities and sufficient filtration cannot be expected,
Remove the lid part 32 and take out the cassette 40,
Each filter medium 50a, 50b, 50c may be appropriately washed to remove impurities, or only the main filter medium 50 or the entire cassette 40 including the main filter medium 50 may be replaced.Also, the small gravel 24 in the dish-shaped base 26 may be washed. In this case, the lid body 38 may be removed by immersing the lid body 38 in cleaning water and vibrating it appropriately.

[Effect of idea]

As mentioned above, according to the filtration device according to the present invention, when cleaning small gravel as a bottom filter medium,
Not only can this be done with the lid attached, which prevents inconveniences such as the material falling off, but the main filter material is also housed in the cassette container, making it easy to clean or replace it. The aquarium water introduced from the top intake port is guided in the axial direction of the container (from top to bottom) to filter impurities.
Since the filtration layer formed by the main filter medium is significantly thicker than the conventional one, it has various advantages such as being able to improve filtration efficiency, and its practical effects are extremely large.

Although the preferred embodiments of the filtration device according to the present invention have been described above, the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention. Of course.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway perspective view of a preferred embodiment of the filtration device according to the present invention, FIG. 2 is a longitudinal sectional view of FIG. 1,
3 is a partially cutaway perspective view showing the relationship between the dish-shaped base and the lid of the filtration device shown in FIG. 1; FIG. 4 is an exploded perspective view of the main filter medium cassette of the filtration device shown in FIG. 1;
FIG. 5 is an explanatory diagram of a conventional filtration device. 20...Water intake, 22...Air supply section, 24...Small gravel, 26...Dish-shaped base, 28...Top water intake,
30...Top water return cylinder, 32...Lid, 34...Container body, 36...Water hole, 38...Base lid, 4
0... Main filter medium cassette, 42... Center hole, 44
...Air stone, 46...Filtered water rise path, 48
... Annular container, 50 ... Main filter medium, 52 ... Annular recess, 54, 56 ... Water hole, 58 ... Lid member.

Claims (1)

[Scope of utility model registration request] The aquarium water introduced from the bottom water intake port and the top water intake port of the container body is passed through the bottom filter material and the main filter material, and the filtered water is passed through the top water return port along with air bubbles generated from the air stone placed in the center of the container body. In the filtration device, a lid body having a large number of water passage holes is attached to the bottom filter medium of the container body, and an air stone protruding from the center of the lid body communicates with an external air supply system, and further, A filtration device for a fish aquarium, characterized in that a main filter medium is filled in an annular cassette container having a large number of water holes at the top and bottom.