JPH0215532Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention relates to a filtration device for an aquarium.

[Conventional technology]

Generally, in aquariums for transporting live fish or aquariums for aquaculture, air or oxygen is supplied from the bottom of the tank to deplete the stored water of oxygen to prevent the live fish from weakening during transportation or aquaculture.

[Problem that the invention attempts to solve]

However, in the above-mentioned aquariums, air or oxygen lifts into the stored water, which causes many air bubbles and impurities to float on the surface of the stored water, making the stored water cloudy and causing the habitat conditions to gradually deteriorate. .

Therefore, the technical challenge of this invention is to solve the above problems, effectively remove air bubbles and impurities floating on the surface of water storage, and prevent the deterioration of habitat conditions.

[Means for solving problems]

In order to solve the above technical problem, this invention erects a filter cylinder on the bottom plate of the aquarium, to which air or oxygen is supplied from the bottom, and an exhaust port is placed in the part of the filter cylinder that is exposed to the outside from the top of the tank. A slit extending in the axial direction is formed in the upper part of the filter cylinder located inside the water tank, a filter medium is filled inside the filter cylinder, and the opening adjustment cylinder of the slit can be slid above the filter medium. An annular float is attached to the upper surface of the adjustment cylinder at a required interval, and a pump is provided in a circulation path that communicates the lower part of the filter cylinder with the water tank.

[Effect]

In the filtration device having the above configuration, for example, seawater is placed inside the aquarium, and the water level of the seawater is regulated between the upper and lower sides of the slits of the filtration tube to control the level of water stored inside the filtration tube within the aquarium. Then, the pump is driven to circulate seawater between the filter tube and the tank, and the seawater that flows into the filter tube from the slit is filtered by the filter medium, and then returned to the tank. This prevents the seawater inside from becoming cloudy.

By the way, in the seawater filtration state as described above, the float floats on the water storage surface of the filter tube, and the gap between the float and the opening adjustment tube integrated therewith almost faces the water storage surface of the water tank. For this reason,
Air bubbles and impurities floating on the surface of the water stored in the water tank effectively flow into the filter cylinder through the slit, and the air bubbles and impurities can be reliably collected into the filter cylinder. Also, since air or oxygen is blown into the filter cylinder from the bottom, the filter medium is backwashed, and the impurities captured by the filter medium are transported upward and discharged to the outside from the exhaust port at the top of the filter cylinder. Ru. Therefore, there is almost no clogging of the filter medium, and a decrease in filtration efficiency can be suppressed.

〔Example〕

The drawing shows an aquarium for transporting live fish. This aquarium 1 has a cylindrical shape, and a filter tube 3 stands up in the center of a bottom plate 2. The upper part of the filter tube 3 penetrates the top plate 4 of the aquarium 1 and protrudes upward, and a safety valve 5 is attached to the protrusion. is installed.

A diffuser pipe 6 is provided at the inner lower part of the filter cylinder 3, and a blower 8 is installed in the middle of a supply pipe 7 that is connected to the diffuser pipe 6 and projects outward from the water tank 1.
By the operation of the blower 8, air or oxygen is supplied into the filter cylinder 3 through the hole 9 provided in the diffuser pipe 6.

Furthermore, a plurality of slits 10 extending in the axial direction are formed in an annular shape in the upper part of the filter cylinder 3 located in the water tank 1, and the seawater filling the tank 1 flows from the slits 10 into the filter cylinder 3. , the filter cylinder 3
Almost the same level of seawater as the water stored inside tank 1 is stored inside the tank.

Furthermore, inside the filter cylinder 3, a filter medium storage cylinder 11 is arranged above the aeration pipe 6, and a perforated plate 12 is provided at the middle and bottom of the filter medium storage cylinder 11, and between the perforated plates 12, a perforated plate 12 is provided. A filter medium 13 is housed.

In addition, it is preferable that the filter medium storage cylinder 11 be detachably attached above the filter cylinder 3 so that the filter medium 13 can be replaced.

A small diameter cylinder part 14 is formed in the upper part of the filter medium storage cylinder 11, and an opening adjustment cylinder 15 is fitted on the outside of the small diameter cylinder part 14 so as to be movable up and down.

An inwardly directed flange 16 is formed on the upper edge of the opening adjustment cylinder 15, and an annular float 17 is attached to the upper surface of the flange 16 at an appropriate distance. Since the float 17 floats on the surface of the water storage, the upper surface level of the opening adjustment cylinder 15 is regulated according to the water level of the storage water, and the opening of the slit 10 is regulated by the opening adjustment cylinder 15.

A circulation chamber 18 is formed on the bottom plate 2 of the water tank 1, and an annular pipe 19 is disposed along the outer peripheral wall of the circulation chamber 18, and the circulation pipe communicates the annular pipe 19 with the inner lower part of the filter cylinder 3. A pump 21 is attached to 20 , and the seawater in the filter cylinder 3 is supplied to the annular pipe 19 by driving the pump 21 .

A plurality of nozzles 22 are provided on the inner peripheral surface of the annular pipe 19.
are installed with the same direction, and each nozzle 22
The seawater in the circulation chamber 18 is swirled in one direction by the seawater jetted from the circulation chamber 18, and flows into the water tank 1 through the hole 24 formed in the top plate 23 of the circulation chamber 18.

As shown in FIG. 3, an outlet 25 is formed in the top plate 4 of the aquarium 1, and the outlet 25 is formed on the outer peripheral edge of a lid 26 that opens and closes the outlet 25 from the inside.
A protrusion 27 that can be engaged with the outer peripheral edge of 5 is provided. When the outlet 25 is open, the outer periphery of the lid 26 is supported by a rail 28 provided on the upper part of the inner circumferential surface of the aquarium 1, and the lid 26 is movable along the rail 28 in the circumferential direction of the aquarium 1. ing.

Now, the inside of the aquarium 1 is filled with seawater, raw fish are placed in the seawater, the inside of the aquarium 1 is sealed, the blower 8 is driven, and the filter cylinder 3 is supplied from the supply pipe 7.
When air or oxygen is supplied to the inside of the water tank 1, the top pressure inside the water tank 1 increases, and the top pressure can be maintained at the set pressure of the safety valve 5.

When the pressure at the top of the water tank 1 is increased as described above, the water level of the stored water drops slightly and when the water level is located between the upper and lower sides of the slit 10, the pump 21 is driven and the lower part of the filter tube 3 is heated. By supplying seawater to the annular pipe 19 and injecting it from the nozzle 22, the seawater level in the water tank 1 increases, and seawater corresponding to the increased amount flows from the slit 10 into the filter cylinder 3. At this time, the float 17 floats on the water storage surface of the filter tube 3, and the gap formed between the float 17 and the opening adjustment tube 15 faces the position of the slit 10, so that floating particles floating on the water storage surface of the water tank 1 The water flows together with the circulating water to the upper part of the filter cylinder 3, and then flows through the above gap to the filter medium storage cylinder 1.
When the liquid enters the inside of the water tank 1 and passes through the filter medium 13, floating substances are removed and the filtrate is returned to the water tank 1.

Therefore, it is possible to prevent the seawater in the aquarium 1 from becoming turbid, and the floating substances captured by the filter medium 13 are removed from the filter tube 3 by air or oxygen blown into the lower part of the filter tube 3. It is pushed upward and discharged to the outside when the safety valve 5 is opened. Therefore, the filter medium 13 is less likely to be clogged, and a decrease in filtration efficiency can be suppressed.

In the case of the example, an aquarium for transporting live fish is shown, but the aquarium is not limited to this, for example, it may be an aquarium for aquaculture with the top of the tank open and the top of the filter cylinder open. good.

In the case of such an aquarium, the end of the chute is made to face the upper opening of the filter cylinder, so that floating matter discharged from the upper opening of the filter cylinder can be appropriately discharged.

〔effect〕

As described above, according to this invention, the circulating water that is circulated between the water tank and the filter cylinder is filtered by the filter medium provided in the filter cylinder, and the filtered water is returned to the water tank. It can prevent the seawater in the aquarium from becoming cloudy. In addition, the gap between the float floating on the water storage surface in the filtration cylinder and the opening adjustment cylinder integrated with it is maintained at approximately the same level with respect to the water storage surface in the water tank, and the upper part of the opening adjustment cylinder Since the slit is partially closed and the closed position is slightly below the water storage surface of the aquarium, floating matter floating on the water storage surface of the aquarium can be reliably taken into the filtration tube, creating a habitat environment inside the aquarium. Conditions can always be kept optimal.

Furthermore, since the filter medium is backwashed by the lifting action of air or oxygen blown from below the filter medium, there is almost no clogging of the filter medium, and a decrease in filtration efficiency can be suppressed.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view showing an embodiment of a water tank according to the invention, FIG. 2 is a transverse plan view of the same, and FIG. 3 is a sectional view showing an outlet of the same. 1...water tank, 3...filter cylinder, 7...supply cylinder, 1
0... Slit, 13... Filter medium, 15... Opening adjustment tube, 17... Float, 20... Circulation pipe,
21...Pump.

Claims (1)

[Scope of utility model registration request] A filter tube is erected on the bottom plate of the aquarium, an exhaust port is provided in the part of the filter tube that is exposed from the top of the aquarium, and a slit extending in the axial direction is formed in the upper part of the filter tube located inside the aquarium. A filter medium is filled inside the filtration cylinder above the outlet of a supply pipe that supplies air or oxygen into the filtration cylinder, and an opening adjustment cylinder for the slit is slidably arranged above the filter medium. A filtration device for an aquarium, in which annular floats are attached to the upper surface at required intervals, and a pump is attached to a circulation path that communicates the lower part of the filtration cylinder with the aquarium.