JPH0422603B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a filter for filtering water in a fish pond for cultivating rainbow trout, rockfish, carp, and the like.

[Prior Art] Conventionally, in order to save water in the fish pond, purification systems that circulate and purify the water in the fish pond have been developed and used.

The present inventors have already developed a filtration machine that constitutes a part of this purification system and removes solid matter such as fish excrement that accumulates in fish ponds in patent application No. 255720 filed in 1988.
We have developed a filter for fish ponds as described in the specification pertaining to No.

This filter consists of a tank that circulates water in a fish pond, a plurality of small block-shaped filter media housed in the tank, and forward and reverse rotation that agitates the filter media provided along the inside of the tank. a water circulation mechanism that circulates the water in the fish pond inside and outside the tank, and a water storage and discharge mechanism that stores water for cleaning in the tank and discharges the water for cleaning from the tank. If the water in the fish pond is circulated through the tank using the water circulation mechanism, the solids contained in the water in the fish pond will be adsorbed by the plurality of filter media housed in the tank. removed. In addition, if solid matter is adsorbed and deposited on the filter medium housed in the filter, and the filtration capacity of the filter medium decreases, use the water storage and discharge mechanism to store water from fish ponds, etc. for cleaning in the tank. When the stirring rod is rotated in the forward and reverse directions, the multiple filter media in the tank are stirred by the stirring rod, and solids are removed from the filter media into the cleaning water stored in the tank. The filtration material is regenerated into a filtration material with the same filtration capacity as before.

[Problems to be Solved by the Invention] By the way, in the above-mentioned conventional filter, water for washing is stored in a tank and stirred with a stirring rod, and the solids adsorbed and deposited on the filter medium housed in the tank are removed. It took a lot of time to remove the material from the filter media.

In addition, even if the solids adsorbed and deposited on the filter medium are removed over a sufficient period of time as described above, the solids cannot be removed accurately from the filter medium, and the filtering capacity of the filter medium gradually decreases. , the filter media in the tank often had to be replaced with new ones.

The present invention solves these problems and provides a filter for fish ponds that can quickly and accurately remove the solid matter adsorbed and deposited on the filter medium housed in the tank, and that allows the filter medium to be used repeatedly over a long period of time. The purpose is to provide.

[Means for Solving the Problems] In order to achieve the above object, the fish pond filter of the present invention, as shown in FIG. 1 and FIG. A tank 1 to be circulated, a plurality of filter media 2 housed in the tank 1, a stirring rod 3 that rotates forward and backward to stir the filter media 2 provided in the tank 1, and internal and external parts of the tank 1. Water circulation mechanism 4 that circulates water in the fish pond over
and a water storage/discharge mechanism 5 for storing washing water in the tank 1 and discharging the washing water from the tank 1, in which the inner circumferential wall 1a of the tank is square or larger. The above-mentioned stirring rod 3 is formed into a polygonal shape, and a plurality of branch rods 3b are installed upward and downward around the central rod 3a, which rotates forward and backward, in a spiral staircase shape. Features.

[Function] In the fish pond filter of the present invention having the above configuration,
After storing water for cleaning in the tank 1 using the water storage/discharging mechanism 5, if the stirring rod 3 is rotated forward and backward, the stirring rod 3 will stir the water for cleaning inside the tank 1 that has stored the water for cleaning. The filtering material 2 subjected to the filtering is strongly rubbed against the inner peripheral wall 1a of the tank by receiving strong frictional resistance from the edge-shaped corners 1b of the inner peripheral wall 1a of the tank formed in a polygonal shape, and is adsorbed and deposited on the filtering material 2. Solids are quickly and accurately transferred from filter medium 2 to tank 1.
It is peeled off and removed into the cleaning water inside.

In addition, since a plurality of branch rods 3b are installed in a spiral step pattern facing outwards above and below the center rod 3a of the stirring rod 3, they are placed around the center rod 3a of the stirring rod 3 which rotates in forward and reverse directions. The filter material 2, which is stirred by a planted predetermined branch rod 3b and moves above or below it in the tank 1, rotates around the center rod 3a a little later than the predetermined branch rod 3b. It violently hits the branch rod 3b above or below 3b,
The branch rod 3b is pushed upward or downward within the tank 1. Then, as the stirring rod 3 is rotated forward and backward, the branch rods 3b around the center rod 3a
However, by forcefully circulating the filter medium 2 up and down through the cleaning water stored in the tank 1, the solids adsorbed and deposited on the filter medium 2 are quickly transferred from the filter medium 2 to the cleaning water in the tank 1. And it is accurately peeled off and eliminated.

[Example] Next, embodiments of the present invention will be described with reference to the drawings.

1 and 2 show a preferred embodiment of the filter for fish ponds of the present invention, and FIG. 1 is a partially cutaway front view of the filter in a state in which water in the fish pond is being circulated; FIG. 2 is a sectional view taken along line AA of the filter shown in FIG. 1, with the water in the fish pond being circulated and the filter material omitted. The embodiment shown in the above figure will be described below.

In the figure, reference numeral 1 denotes a tank having an octagonal inner circumferential wall 1a through which water circulates in a fish pond.

In detail, this tank 1 is provided with a tank body 6 having a square shape with a bottom, and provided with side walls 7 at four corners inside the body 6 for forming the inner circumferential wall 1a of the tank into an octagonal shape. There is.

The upper end of the side wall 7 is formed lower than the upper edge of the tank body 6, and the lower end of the side wall 7 is formed higher than the inner bottom surface of the tank body 6.

The upper end opening 8 of the tank is covered with a lid 9 that can be opened and closed.

Further, a stirring rod 3 that rotates in forward and backward directions for stirring a filter material 2, which will be described later, is provided in the vertical direction at the center of the tank 1.

In detail, the stirring rod 3 includes a center rod 3a which is vertically rotated in the vertical direction at the center of the tank 1 and which is rotated forward and backward by a motor 10 provided on the lid 9.
A plurality of branch rods 3b are planted in a spiral staircase shape extending above and below the periphery and facing outward from the center rod 3a.

Furthermore, the inner peripheral wall 1a is formed into an octagonal shape using the side wall 7, and the inner upper part and the lower part of the tank 1 are
It is partitioned by an upper plate 12a and a lower plate 12b, each having a mesh 11 such as a punch plate.

A midway space 13 inside the tank is partitioned by the upper plate 12a and the lower plate 12b.
A large number of filter media 2 made of small block-shaped chemical fiber mats or the like are housed in the tank, and a filter material 2 that can be opened and closed is provided on the peripheral wall of the tank body 6 to take the filter media 2 into and out of the midway space 13 in the tank. An entrance/exit 14 is provided.

Further, on the peripheral wall of the tank body 6 below the lower plate 12b, there is also a water return pipe 15 for returning the water in the fish pond that has been circulated through the tank 1 to the fish pond outside the tank 1, and a water return pipe 15 for returning the water that has been circulated through the tank 1 to the fish pond outside the tank 1. Water discharge pipe 16 for discharging water for cleaning outside the tank 1
are connected.

Then, in the middle of the water return pipe 15 and the water discharge pipe 16, both pipes 15 and 16 are provided, respectively.
Valves 17 and 18 are provided to open and close the interior.

Further, a water supply pipe 19 for circulating water in the fish pond into the tank 1 is connected to the peripheral wall of the tank body 6 above the upper plate 12a.

Further, a water supply pump 20 is provided in the middle of the water supply pipe 19 to forcibly flow water in the fish pond into the tank 1 through the pipe 19.

The water supply pipe 19 equipped with the water supply pump 20 and the water return pipe 15 equipped with the above-mentioned valve 17 constitute a water circulation mechanism 4 that circulates water in the fish pond both inside and outside the tank 1. are doing.

At the same time, a water supply pipe 19 equipped with the water supply pump 20, a water discharge pipe 16 equipped with the above-mentioned valve 18, and a valve 17 equipped on the water return pipe 15 are installed in the tank 1 for cleaning purposes. A water storage and discharge mechanism 5 is configured to store the water and discharge the washing water from the tank 1.

The fish pond filter shown in FIGS. 1 and 2 is constructed as described above.

Next, its effect will be explained.

By operating the water supply pump 20, the water circulation mechanism 4
The water in the fish pond is forced to flow into the tank 1 through the water supply pipe 19 that constitutes the tank 1. and,
The inflow water is transferred to the upper plate 1 at the upper part of the tank.
After circulating through the tank intermediate space 13 containing the filter material 2 through the mesh 11 of 2a, it is dropped to the inner bottom of the tank 1 through the mesh 11 of the lower plate 12b at the lower part of the tank, and is placed on the tank body 6 surrounding wall. The water passes through the return pipe 15 and flows into the fish pond again.

Then, solid matter such as fish excrement contained in the water in the fish pond that is circulated through the tank 1 using the water circulation mechanism 4 is transferred to a space in the middle of the tank between the upper plate 12a and the lower plate 12b. 1
It is adsorbed to the filter medium 2 housed in the filter 3 and removed.
Then, the mesh 1 of the lower plate 12b inside the tank
The water in the fish pond from which the solid matter has been removed falls through the water return pipe 15 to the inner bottom of the tank 1, and the fallen water flows out into the fish pond through the water return pipe 15.

In addition, if solid matter is adsorbed and deposited on the filter medium 2 accommodated in the tank midway space 13 and the filtration capacity of the filter medium 2 is reduced, the water supply pump 20 is stopped and the water circulation mechanism 4 is used. The water in the fish pond that is circulated through the tank 1 is stopped from flowing into the tank 1, and the valve 17 in the middle of the water return pipe 15 is closed to allow the water to flow from the tank 1 through the water return pipe 15 and into the fish pond. Stop water runoff. Then, water from the fish pond for cleaning is stored in the tank 1. Thereafter, the motor 10 is operated to rotate the stirring bar 3 forward and backward, and the stirring bar 3 is rotated in the forward and reverse directions.
The filter material 2 accommodated in the tank midway space 13 is stirred in the cleaning water stored in the tank 1.

Then, the filter material 2 stirred in the washing water by the stirring rod 3 receives a strong frictional force from the edge-shaped corner 1b of the inner circumferential wall 1a of the tank, and is strongly rubbed against the inner circumferential wall 1a of the tank. The solids adsorbed and deposited on the filter medium 2 are quickly and accurately removed from the filter medium 2 into the cleaning water in the tank 1.

At the same time, a plurality of branch rods 3b, which are installed in a spiral staircase pattern upward and downward around the central axis 3a of the stirring rod 3, which rotates forward and backward, move the filter material 2 into the intermediate space inside the tank. 13 is forcefully and violently circulated in the vertical direction, solid matter is quickly and accurately removed from the filter medium 2 into the cleaning water in the tank 1.

Then, the filtering material 2 accommodated in the intermediate space 13 within the tank is quickly regenerated into a filtering material having the same filtration ability as before.

After that, the valve 18 provided in the water discharge pipe 16 that constitutes the water storage and discharge mechanism 5 is opened, and the cleaning water contaminated with solid matter stored in the tank 1 is discharged to the outside of the tank 1 through the water discharge pipe 16. Remove.

Then, the valve 18 is closed again, the valve 17 is opened, and the water supply pump 20 is operated to connect the water supply pipe 19 of the water circulation mechanism 4 and the water return pipe 1.
When the water in the fish pond is circulated through the tank 1 through the inside of the tank 5, the solid matter contained in the water in the fish pond is adsorbed and removed by the recycled filter medium 2 housed in the intermediate space 13 inside the tank. can continue to do so.

Furthermore, the water surface level in the fish pond, which is circulated through the tank 1 using the water circulation mechanism 4, rises.
If the water in the fish pond overflows from the upper opening 8 of the tank to the outside of the tank 1, the upper end of the side wall 7, which is shorter than the upper edge of the tank main body 6, provided at the four inner corners of the tank main body 6. Tank internal space 21 surrounded from the edge by the side wall 7 and the inner circumferential wall of the tank body 6
Through this, the water that is about to overflow from the upper end opening 8 of the tank to the outside of the tank 1 falls directly to the inner bottom of the tank body 6, and flows into the water return pipe 15 constituting the water circulation mechanism 4 connected to the circumferential wall of the tank body 6. It flows into the fish pond through the water. and,
Water in the fish pond circulating through the tank 1 is prevented from overflowing to the outside of the tank 1 through the upper end opening 8 of the tank.

In addition, in the above-mentioned embodiment, the inner peripheral wall 1 of the tank
The shape of a may be formed into a polygonal shape greater than or equal to an octagon, or a quadrangular shape less than or equal to an octagonal shape. Can be formed.

In addition, the water circulating in the tank 1 that is about to overflow from the upper end opening 8 of the tank is directly passed through the water return pipe 15 into the fish pond without passing through the tank midway space 13 that accommodates the filter material 2. The tank internal space 21 surrounded by the side wall 7 and the inner circumferential wall of the tank body 6 is connected to the upper end opening 8 of the tank.
If it is acceptable for the water in the tank 1 to overflow from the tank 1, there is no need to provide it in the tank 1.

[Effects of the Invention] As explained above, in the fish pond filter of the present invention, if water for cleaning is stored in the tank and the stirring rod is rotated in the forward and reverse directions, the above-mentioned forward and reverse rotation stirring can be achieved. The filtration material inside the tank, which is stirred by a rod, is strongly rubbed against the inner circumferential wall of the polygonal tank, and is also planted in spiral steps upward and downward around the central axis that makes up the stirring rod. A plurality of branch rods forcefully and vigorously circulate the filter medium in the up and down direction through the cleaning water in the tank.

Solid matter such as fish excrement adsorbed and deposited on the filter medium housed in the tank is quickly and accurately removed from the filter medium into the washing water.

Therefore, by using the fish pond filter of the present invention, the filter material stored in the tank can be repeatedly regenerated and used for a long period of time, and the regeneration work of the filter material stored in the tank can be done quickly and easily. can be achieved.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view of the fish pond filter of the present invention in a state in which water in the fish pond is being circulated;
Figure 2 shows A-A of the fish pond filter shown in Figure 1, with the water in the fish pond being circulated and the filter material omitted.
FIG. 1...Tank, 1a...Inner peripheral wall of tank, 2...
...Filtering material, 3... Stirring bar, 3a... Center rod, 3b
... Branch rod, 4 ... Water circulation mechanism, 5 ... Water storage and discharge mechanism, 15 ... Water return pipe, 16 ... Water discharge pipe, 19 ... Water supply pipe, 20 ... Water supply pump.

Claims (1)

[Claims] 1. A tank that circulates water in a fish pond, a plurality of filter media housed in the tank, a stirring rod that rotates forward and backward to stir the filter media provided in the tank, and a In a filter comprising a water circulation mechanism that circulates water in a fish pond, and a water storage and discharge mechanism that stores washing water in the tank and discharges the washing water from the tank, the tank The inner circumferential wall of the stirrer is formed into a polygonal shape that is more than a square, and a plurality of branch rods are planted upward and downward in a spiral staircase shape around a central rod that rotates the stirring rod in forward and reverse directions. A filter machine for fish ponds that is characterized by: