KR101631283B1 - fish tank filtering equipment - Google Patents

fish tank filtering equipment Download PDF

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Publication number
KR101631283B1
KR101631283B1 KR1020150146420A KR20150146420A KR101631283B1 KR 101631283 B1 KR101631283 B1 KR 101631283B1 KR 1020150146420 A KR1020150146420 A KR 1020150146420A KR 20150146420 A KR20150146420 A KR 20150146420A KR 101631283 B1 KR101631283 B1 KR 101631283B1
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South Korea
Prior art keywords
pipe
water
extending
extending portion
inlet
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KR1020150146420A
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Korean (ko)
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이원석
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이원석
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Priority to KR1020150146420A priority Critical patent/KR101631283B1/en
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
    • A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
    • A01K63/042—Introducing gases into the water, e.g. aerators, air pumps
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
    • A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
    • A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
    • A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
    • A01K63/047—Liquid pumps for aquaria
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/24—Treatment of water, waste water, or sewage by flotation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/26—Reducing the size of particles, liquid droplets or bubbles, e.g. by crushing, grinding, spraying, creation of microbubbles or nanobubbles

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Animal Husbandry (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The present invention relates to a new structure of a water tank filtration apparatus which is simple in structure and capable of effectively removing contaminants contained in water in a water tank.
The water tank filtration apparatus according to the present invention uses the filtration unit (30) to swell the contaminants contained in water in the form of bubbles, and only the bubbles thus generated are selectively removed, so that the structure is very simple and effective. And it is easy to maintain.

Description

[0002] Fish tank filtering equipment [0003]

The present invention relates to a new structure of a water tank filtration apparatus which is simple in structure and capable of effectively removing contaminants contained in water in a water tank.

Generally, in the case of a water tank used for storing live fish in a restaurant, water is contaminated by pollutants such as proteins generated in fish.

Therefore, such a water tank is provided with a filtration device for filtering water, thereby filtering contaminants such as proteins contained in water.

However, such a filtration apparatus has a problem that the apparatus is large and complicated, and management is troublesome.

Therefore, there is a need for a new method to solve such a problem.

On the other hand, the pollutants generated in these tanks rise to the surface of water, and when these pollutants and air are mixed, they become inflated like bubbles.

Registration Utility Model No. 20-0164810, Patent Document 10-2001-0029490,

SUMMARY OF THE INVENTION It is an object of the present invention to provide a new structure of a water tank filtration apparatus which can effectively remove contaminants contained in water in a water tank.

According to an aspect of the present invention, there is provided an air conditioner comprising: an inflow pipe (10) provided so as to be submerged in water stored in a water tank so that contaminants rising on a water surface are introduced into the inside together with water; A pump 20 connected to the pump 20 through the connection pipe 40 and provided in the water discharged from the pump 20 for discharging water and contaminants introduced into the inlet pipe 10; And a filtration unit 30 for removing contaminants. The filtration unit 30 has an inlet port 31a and a drain port 31b for connecting the connection pipe 40 to the lower end of the filtration unit 30, A reservoir 31c interposed between the inflow port 31a and the inflow port 31b and having a discharge port 31d for discharging bubbles generated by swelling of contaminants on the upper surface; (32) connected to the discharge port (31b), and a discharge pipe Wherein the drain pipe (32) includes an upwardly extending portion (32a) extending upwardly from the discharge port (31d) and a horizontally extending portion extending laterally from the upper end of the upwardly extending portion (32a) And a lower extension 32c extending downward from an end of the horizontal extension 32b and the horizontal extension 32b extending from the upper end of the diaphragm 31c and the lower extension 32c, 31). The water tank filtration apparatus according to the present invention is characterized in that the water tank filtration apparatus is configured to be positioned between the upper side surfaces of the water tank.

According to another aspect of the present invention, the connection pipe 40 includes an upwardly extending portion 41 extending upward from the inlet 31a at a rear end of the pump 20, And a downwardly extending portion 43 extending downward from the end of the horizontal extending portion 42 and connected to the inlet 31a so that the horizontal extending portion 42 A venturi portion 42a having a narrow inner diameter is formed at an intermediate portion of the venturi portion 42 and an intake port 42b extending into the venturi portion 42a is formed on an upper circumferential surface of the horizontal extending portion 42, And an intake pipe 42c extending upward is connected to the intake port 42b.

According to another aspect of the present invention, a transparent pipe (33a) made of a transparent material is connected to the middle portion of the discharge pipe (33).

According to another aspect of the present invention, the inflow pipe 10 includes a fixed pipe 11 extending upward and downward and fixed to the inner bottom surface of the water tub, And a buoyant body 13 provided in the buoyed pipe 12 to provide buoyancy to the buoyed pipe 12. The buoyant pipe 12 is connected to the buoyant body 13, So that the water and water contaminants floating on the water surface are introduced into the inside through the upper end thereof. The inner diameter of the elevated pipe (12) is larger than the inner diameter of the fixed pipe And a gap G is formed between the inner circumferential surface of the elevating tube 12 and the outer circumferential surface of the fixing tube 11 so that the fixing tube 11 and the elevating tube 12 The water flows into the inlet pipe 10 through the gap G between the inlet The water tank filtering apparatus according to claim is provided.

According to another aspect of the present invention, there is provided a speed reducer including a speed reducer 50 provided inside the fixing pipe 11 and configured to have an input shaft 52 extending downward and an output shaft 53 extending upward, And an impeller 60 coupled to the fixed pipe 11 and rotated by water introduced into the fixed pipe 11. The elevating pipe 12 is provided with an elevator When the impeller 60 is rotated by the inflow of water into the inflow pipe 10 and the output shaft 53 of the speed reducer 50 is rotated, And the buoyant body (13) is rotated in the lateral direction.

The water tank filtration apparatus according to the present invention uses the filtration unit (30) to swell the contaminants contained in water in the form of bubbles, and only the bubbles thus generated are selectively removed, so that the structure is very simple and effective. And it is easy to maintain.

1 is a side view showing a water tank filtration apparatus according to the present invention,
FIG. 2 is a side cross-sectional view showing an inlet pipe and a pump of a water tub filtering apparatus according to the present invention,
FIG. 3 is a side cross-sectional view showing a decomposition state of an inflow pipe of a water filtration apparatus according to the present invention,
4 is a side sectional view showing a filtration unit of the water filtration apparatus according to the present invention,
5 is a side cross-sectional view of an inlet pipe and a pump showing a second embodiment of the water bath filtration apparatus according to the present invention,
6 is a plan view of an inlet pipe for explaining the operation of the second embodiment of the water tank filtration apparatus according to the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 to 4 illustrate a water tank filtration apparatus according to the present invention, which is provided in a two-stage water tank composed of a lower water tank 1 and an upper water tank 2.

At this time, the upper water tank 2 is provided with a circulation pipe 3 extending through the bottom surface to the lower water tank 1, so that water in the upper water tank 2 is discharged downward through the circulation pipe 3 So that contaminants floating on the water surface of the upper water tank 2 are discharged to the lower water tank 1.

According to the present invention, the water filtration apparatus according to the present invention comprises an inflow pipe (10) which is provided inside the lower water tank (1) so as to be submerged in water and in which contaminants rising on the water surface flow together with water, A pump 20 connected to the inlet pipe 10 for pressurizing and discharging the water and contaminants introduced into the inlet pipe 10 and a pump 20 installed on the upper side of the upper water tank 2, And a filtration unit (30) connected to the pump (20) to remove contaminants contained in the water discharged from the pump (20).

2 and 3, the inflow pipe 10 includes a fixed pipe 11 extending upward and downward and fixed to an inner bottom surface of the water tub, And a buoyant body 13 provided on the elevated pipe 12 and providing a buoyancy to the elevated pipe 12. The buoyant pipe 13 is provided with a buoyant pipe 12,

The fixed pipe 11 is vertically provided on a bottom plate 14 disposed on an inner bottom surface of the lower water tank 1. The upper pipe 11a having a larger diameter is provided with an upper pipe (11b).

At this time, the lower tube 11a is vertically adhered and fixed to the upper surface of the bottom plate 14, and the upper tube 11b is water-tightly fitted into the upper end of the lower tube 11a.

The elevated pipe 12 is vertically coupled to the fixed pipe 11, that is, to the outside of the upper pipe 11b.

The buoyant body (13) has a cylindrical shape with a space formed therein and is coupled to both sides of the upper end of the elevated pipe (12) so that the elevated pipe (12) floats upwards.

At this time, the lifting pipe (12) is lifted up by the buoyant body (13) so that the upper end thereof is positioned lower than the water surface by a predetermined distance, so that the water and water contaminants floating in the water surface .

That is, the buoyant body (13) causes the booster pipe (12) to float so that the upper end of the booster pipe (12) is located at a predetermined distance below the water surface.

The inner diameter of the elevating tube 12 is larger than the outer diameter of the fixing tube 11, that is, the outer diameter of the upper tube 11b. The inner diameter of the elevating tube 12 and the outer diameter of the upper tube 11b So that water can be introduced into the inlet pipe 10 through the gap G between the fixed pipe 11 and the elevated pipe 12, .

The pump 20 uses a submerged pump 20 that operates in a submerged state and is connected to a lower end of the fixing pipe 11 in a state of being fixed to the bottom plate 14, And supplies the water and the contaminants to the filtration unit (30) through the connection pipe (40).

4, the filtration unit 30 has an inlet 31a and a drain 31b connected to the connection pipe 40 at its lower end, and an internal space at the lower inside thereof is connected to the inlet 31a And a discharge port 31d formed on the upper surface thereof for discharging bubbles generated by swelling of contaminants and a drain pipe 31b connected to the drain port 31b, (32), and a discharge pipe (33) connected to the discharge port (31d).

The connection pipe 40 includes an upwardly extending portion 41 extending upwardly from the inlet 31a at the rear end of the pump 20 and a second extending portion 41 extending laterally from the upper end of the upwardly extending portion 41 And a downward extending portion 43 extending downward from the end of the horizontal extending portion 42 and connected to the inlet 31a.

A venturi portion 42a having an inner diameter narrowed is formed at the middle portion of the horizontal extending portion 42 and an intake port 42a extending toward the inside of the venturi portion 42a is formed on an upper circumferential surface of the horizontal extending portion 42. [ And an intake pipe 42c extending upward is connected to the intake port 42b.

The drain pipe 32 includes an upwardly extending portion 32a extending upward from the discharge port 31d, a horizontally extending portion 32b extending laterally from the upper end of the upwardly extending portion 32a, The horizontal extending portion 32b is formed between the upper end of the partition plate 31c and the upper side surface of the reservoir body 31. The horizontally extending portion 32b has a downwardly extending portion 32c extending downward from the end of the horizontal extending portion 32b, So that the water level of the water supplied to the inside of the water storage tube 31 maintains the same level as the inner lower surface of the horizontal extending portion 32b.

Preferably, the horizontal extension 32b is located at a sufficiently high height such that the lower side of the horizontal extension 32b is close to the upper side of the reservoir 31, so that the water level inside the reservoir 31 is lower than the water level of the reservoir 31 That is, the discharge port 31d.

At this time, the downwardly extending portion 32c extends downward sufficiently to be submerged in the water stored in the upper water tank 2.

A transparent tube 33a made of a transparent material is connected to the middle portion of the discharge tube 33. [

The operation of the water tank filtration apparatus constructed as described above will be described below.

The water in the water surface of the water stored in the lower water tank 1 and the contaminants floating on the water surface float together with the water of the water stored in the lower water tank 1, And flows into the inside through the upper end of the winch pipe (12).

Accordingly, when the pump 20 is operated, water introduced into the inlet pipe 10 is supplied to the filtration unit 30 through the connection pipe 40.

At this time, the water passes through the venturi portion 42a of the connection pipe 40. At this time, the external air flows into the intake pipe 42c and the intake port 42b and is mixed with the water.

The water mixed with air is supplied into the interior of the water storage tank 31 through the inlet 31a of the water storage 31 and then mixed with air and water while colliding with the partition 31c, At this time, the contaminants contained in the water are mixed with the air to swell in the form of bubbles, and the foam thus generated floats to the water surface of the water stored in the water tub 31.

Thus, the contaminants contained in water and water are separated from each other.

When the water level inside the water storage tank 31 rises to the inner lower level of the horizontal extension 32b of the water discharge pipe 32, water supplied to the inside of the water storage pipe 31 flows into the water discharge pipe 32 And the bubbles of the contaminants remaining in the container are discharged to the discharge pipe 33 through the discharge port 31d.

That is, when the pump 20 is driven, the water introduced into the inflow pipe 10 continuously flows into the inside of the storage tank 31, It will accumulate.

When bubbles accumulate and come into contact with the discharge port (31d) on the upper surface of the water storage tube (31), the bubbles flow into the discharge port (31d) Is discharged through the discharge pipe (33) and removed.

The method of removing the contaminants by discharging only the bubbles of the contaminants to the separate outlet port 31d after the contaminants are inflated in the form of bubbles is generally used in the oil filtration unit 30 and the like. No further explanation is given for the further explanation.

Therefore, only the clean water from which pollutants have been removed is supplied to the upper water tank 2, and when the water level of the upper water tank 2 becomes higher, the water in the upper water tank 2 and the pollutants generated in the upper water tank 2 The water and the contaminants of the lower water tank 1 are discharged to the filtration unit 30 through the circulation pipe 3 and then discharged to the lower water tank 1, It is possible to remove contaminants contained in the water in the upper water tank 2 and the lower water tank 1 and to keep the water stored in the upper water tank 2 and the lower water tank 1 clean.

The thus configured water filtration apparatus uses the filtration unit 30 to swell the contaminants contained in the water in the form of bubbles and selectively removes only the bubbles thus generated, , And easy maintenance.

The connection pipe 40 includes an upwardly extending portion 41 extending upwardly from the inlet 31a at the rear end of the pump 20 and a pair of upwardly extending portions 41 extending laterally from the top of the upwardly extending portion 41 A horizontal extending portion 42 and a downward extending portion 43 extending downward from an end of the horizontal extending portion 42 and connected to the inlet 31a, A venturi portion 42a having a narrow inner diameter is formed and an intake port 42b extending into the interior of the venturi portion 42a is formed on an upper circumferential surface of the horizontal extending portion 42, The water pressurized by the pump 20 passes through the venturi portion 42a and the outside air is supplied through the intake port 42b and the intake pipe 42c So that water and air are mixed.

Therefore, when the water collides with the diaphragm 31c in the reservoir 31, there is an advantage that bubbles can be effectively generated from the contaminants.

That is, when there is no structure of the venturi portion 42a, the intake port 42b, or the intake pipe 42c, only the air introduced together with the inflow pipe 10 is mixed with water, It is difficult to effectively generate a large amount of bubbles by generating bubbles. In the case of this embodiment, by using the venturi portion 42a, the intake port 42b, and the intake pipe 42c, a larger amount of air is mixed with water The contaminants contained in the water supplied to the inside of the water storage tube 31 are inflated in the form of a foam, so that the contaminants can be removed more effectively.

A transparent tube 33a made of a transparent material is connected to the middle part of the discharge pipe 33 so that when bubbles or contaminants are discharged through the discharge pipe 33, .

5 and 6 illustrate another embodiment according to the present invention. In the fixing pipe 11, a speed reducer 50 configured to have an input shaft 52 extending downward and an output shaft 53 extending upward, And the impeller 60 rotated by the water introduced into the fixed pipe 11 is coupled to the input shaft 52.

The decelerator 50 is installed such that the circumferential surface thereof is spaced apart from the inner circumferential surface of the upper pipe 11b by the support bar 51 provided on the circumferential surface of the fixing pipe 11, And a speed reducer 50 not shown in the figure is provided to reduce the rotation speed of the input shaft 52 so that the output shaft 53 is slowly rotated.

At this time, the rotation torque of the output shaft 53 is amplified as compared with the rotation torque of the input shaft 52.

Since the structure of the speed reducer 50 is a general one, a detailed description thereof will be omitted.

The impeller 60 has a general propeller shape and is rotated by the water introduced into the upper end of the inlet pipe 10 so that the input shaft 52 of the speed reducer 50 is rotated.

The lift pipe 12 is provided with a lift bracket 15 coupled to the output shaft 53 so as not to rotate.

For this purpose, the output shaft 53 is formed in the form of a rectangular bar extending in the vertical direction, and the elevating bracket 15 is formed with a rectangular coupling hole 15a to which the output shaft 53 is coupled.

Therefore, when water flows into the inlet pipe 10, the impeller 60 is rotated, and the input shaft 52 of the speed reducer 50 is rotated.

6, when the input shaft 52 is rotated, the output shaft 53 is slowly rotated with a strong torque, so that the lifting bracket 15, the elevating tube 12, 13 are laterally rotated.

When the water flows into the inlet pipe 10, the water pipe 12 and the buoyant body 13 are rotated in the lateral direction, so that the peripheral surface of the buoyant body 13 is contaminated There is an advantage that the buoyancy body 13 can be prevented from being dirty due to the adhesion of the substance.

That is, since the upper end portion of the buoyant body 13 is exposed to the upper surface of the water, when the time passes, contaminants rising on the water surface of the water surface are adhered and become dirty.

However, in the present embodiment, since the buoyant body 13 is rotated in the lateral direction together with the elevated pipe 12, the contaminants are less likely to adhere to the circumferential surface of the buoyant body 13, It is possible to prevent the floating body 13 from becoming dirty due to the adherence of contaminants to the circumferential surface of the bushing 13.

10. Inflow pipe 20. Pump
30. Filtration unit 40. Connector

Claims (5)

An inflow pipe (10) configured to be submerged in water stored in the water tank,
A pump 20 connected to the inflow pipe 10 for pressurizing and discharging water and contaminants introduced into the inflow pipe 10,
And a filtration unit (30) connected to the pump (20) through a connection pipe (40) to remove contaminants contained in the water discharged from the pump (20)
The filtration unit (30)
An inlet port 31a and a drain port 31b for connecting the connection pipe 40 are formed at the lower end portion and a partition plate 31c for blocking the internal space between the inlet port 31a and the drain port 31b is provided on the inner lower side (31) formed with an outlet (31d) for discharging bubbles generated by swelling of contaminants on the upper surface,
A drain pipe 32 connected to the drain hole 31b,
And a discharge pipe (33) connected to the discharge port (31d)
The drain pipe (32)
An upwardly extending portion 32a extending upward from the discharge port 31d,
A horizontal extending portion 32b extending laterally from an upper end of the upwardly extending portion 32a,
And a downward extending portion 32c extending downward from an end of the horizontal extending portion 32b,
The horizontal extending portion 32b is configured to be positioned between the upper end of the partition plate 31c and the upper side surface of the reservoir 31,
The inlet pipe (10)
A fixing pipe 11 extending vertically and fixed to an inner bottom surface of the water tub,
A steel pipe 12 which is vertically coupled to the outside of the fixed pipe 11,
And a buoyant body (13) provided in the elevated pipe (12) to provide buoyancy to the elevated pipe (12)
The elevated pipe (12)
The float body 13 floats so that the upper end thereof is located at a predetermined distance lower than the water surface, and contaminants floating in the water and the water surface of the water tank are introduced into the interior through the upper end,
The inner diameter of the elevating pipe 12 is larger than the outer diameter of the fixing pipe 11 so that a gap G through which water can flow between the inner circumferential surface of the elevating pipe 12 and the outer circumferential surface of the fixing pipe 11 is formed Thereby allowing water to flow into the inlet pipe 10 through the gap G between the fixed pipe 11 and the elevated pipe 12,
A speed reducer 50 provided in the fixing pipe 11 and configured to have an input shaft 52 extending downward and an output shaft 53 extending upward,
Further comprising an impeller (60) coupled to the input shaft (52) and rotated by water introduced into the fixed pipe (11)
The elevating tube 12 is provided with a lifting bracket 15 coupled to the output shaft 53 so as not to rotate,
When the impeller 60 is rotated by the inflow of water into the inflow pipe 10, the output shaft 53 of the speed reducer 50 is rotated so that the elevated pipe 12 and the buoyant body 13 are sideways To be rotated by a predetermined angle.
The method according to claim 1,
The connection pipe (40)
An upwardly extending portion 41 extending from the rear end of the pump 20 to the upper side of the inlet 31a,
A horizontally extending portion 42 extending laterally from the upper end of the upwardly extending portion 41,
And a downward extension portion (43) extending downward from an end of the horizontal extension portion (42) and connected to the inlet (31a)
A venturi portion 42a having a narrow inner diameter is formed at the middle portion of the horizontal extending portion 42,
An inlet port 42b extending into the interior of the venturi portion 42a is formed on an upper circumferential surface of the horizontal extension portion 42,
And an intake pipe (42c) extending upward is connected to the intake port (42b).
The method according to claim 1,
And a transparent pipe (33a) made of a transparent material is connected to the middle part of the discharge pipe (33).
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KR1020150146420A 2015-10-21 2015-10-21 fish tank filtering equipment KR101631283B1 (en)

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200164810Y1 (en) 1997-08-29 2000-01-15 김자중 The bubbly filter for an aquarium
KR20010029490A (en) 1996-09-09 2001-04-06 다카다 슈운수케 Filtration device for tank water for acquarium fish
KR200443159Y1 (en) * 2008-07-21 2009-01-16 정요섭 Waste water purifying apparatus of aquarium
KR20090014911A (en) * 2007-08-07 2009-02-11 정명규 Water purification device for a water tank
KR20100006803U (en) * 2010-06-01 2010-07-05 김순규 A skimmer of an aquarium
KR101165020B1 (en) * 2011-12-02 2012-07-13 조석찬 Apparatus for purifying water for a fish rearing tank

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20010029490A (en) 1996-09-09 2001-04-06 다카다 슈운수케 Filtration device for tank water for acquarium fish
KR200164810Y1 (en) 1997-08-29 2000-01-15 김자중 The bubbly filter for an aquarium
KR20090014911A (en) * 2007-08-07 2009-02-11 정명규 Water purification device for a water tank
KR200443159Y1 (en) * 2008-07-21 2009-01-16 정요섭 Waste water purifying apparatus of aquarium
KR20100006803U (en) * 2010-06-01 2010-07-05 김순규 A skimmer of an aquarium
KR101165020B1 (en) * 2011-12-02 2012-07-13 조석찬 Apparatus for purifying water for a fish rearing tank

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