JP2521900Y2 - Filtration device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filtration apparatus capable of supplying sufficient air to filtration bacteria attached to a filtration material and water in a water tank.

[0002]

2. Description of the Related Art For example, in an aquarium for appreciation of goldfish and tropical fish, the water inside the tank is contaminated by food residue or feces when used. Therefore, a filtration device of an upper filtration type for removing dirt from water in a water tank has been developed. A conventional filtration device is provided with a filtration tank containing a filtering material to which aerobic bacteria, which are aerobic bacteria, are attached at the upper part of the water tank, and a pump provided with water from the water tank sucks the water into one end of the filtration tank, and the water that has been sucked up. Is filtered by a filtering material, and is again dropped into a water tank from a drain port provided at the other end of the filtration tank. It should be noted that the sucked water always keeps a constant water level that keeps the filter medium below the water surface in the filter tank.

[0003]

By the way, for goldfish and the like in an aquarium, it is preferable that a large amount of oxygen is contained in the water, and it is also preferable for filter bacteria adhering to a filter medium. Filtration bacteria are aerobic bacteria that convert, for example, ammonia contained in fish excrement into nitrite, which is harmless to fish. However, this filtration bacterium increases its reproductive ability if there is sufficient oxygen. However, in the conventional filtration device, the water sucked into the filtration tank in this way is always kept at a higher water level than the filtration material, so that oxygen required by the filtration bacteria and goldfish, etc., is introduced into the water by bubbles. Unless an aeration device that mixes air is used, it can only be taken into the water from the surface of the water tank or the surface of the filtration tank, and is absorbed by these organisms through the water, so that sufficient oxygen cannot be taken up. was there. The present invention has been made in view of such circumstances, and an object of the present invention is to provide a filtration device capable of supplying sufficient air to filtration bacteria attached to a filtration material and water in a water tank.

[0004]

According to the present invention, there is provided a semiconductor device comprising:
The filtration device described above is a vertically long filtration tank into which water pumped up by a pump is put from above, a filter medium that is stored in the filtration tank and filters the water, and a filter medium that is stored in the filtration tank and is contained in the filtration tank. When the water filtered by the filter reaches a predetermined water level, a siphon means for dropping the filtered water downward, the siphon means is attached through the bottom of the filtration tank, The upper water inlet covers a drain pipe located slightly below the upper limit water level of the filter tank and the drain pipe in the filter tank with a gap, and a plurality of vertical pipes provided around the drain pipe. A cylindrical casing supported by a plate rib, a bottom part of which is an open lower water intake port and is disposed with a small gap from the bottom part of the filtration tank, and has a diameter sufficiently larger than the drain pipe; On the side of An intake port is formed at a position slightly above the lower water intake port, an upper portion has an intake cylinder communicating with the cylindrical casing, and an upper portion of the filtration tank receives water from the pump. There is provided a lid having an opening and a plurality of ventilation holes, and the filter medium is provided with a large number of water holes and housed in a case arranged on one side of the filtration tank.

[0005]

According to the first aspect of the present invention, the water supplied to the filter tank by the pump is filtered by the filter material and gradually stored in the filter tank. When the water in the filtration tank reaches a certain water level, the siphon means operates and the water in the filtration tank is dropped into the water tank. This operation is repeated while the supply means is operating. At this time, since the filter medium repeats the operation of contacting with the outside air or being buried in the water, the filtration bacteria can take in oxygen directly from the outside air when the water level drops, and when the water rises again after the water level falls Then, oxygen adhering to the filter medium can be taken into the water.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the accompanying drawings to facilitate understanding of the present invention. Here, FIG. 1 is an exploded perspective view of a viewing tank device to which a filtering device according to an embodiment of the present invention is applied, FIG. 2 is an overall perspective view thereof, FIG. 3 is a longitudinally enlarged sectional view of a siphon means, and FIG. FIG. 3 shows a laterally enlarged sectional view of the siphon means.

As shown in FIG. 2, an aquarium apparatus 10 using a filtering device according to an embodiment of the present invention is suitable for breeding freshwater fish, brine fish or tropical fish, for example, and its front and both sides are gentle. And a water tank 11 integrally formed of an acrylic resin. The water tank 11 is placed on a table 12, and a lid 14 is attached to the upper part of the water tank 11 through a frame 13. This frame 1
A large number of air ventilation holes 13a for sucking and exhausting the inside of the water tank 11 are provided on the front surface of the water tank 11, and ventilation holes 14a are also provided at the upper rear corner of the lid base 14. A large opening 14b is provided at the front of the lid base 14, and a lid 15 is attached to the opening 14b so as to be openable and closable. Next, with reference to FIG. 1, the devices arranged in the viewing tank device 10 will be described in detail.

As shown in FIG. 1, a mounting frame 16 is suspended from the center of the frame 13, and a filtering device 17 is mounted on the mounting frame 16. The filtering device 17 includes the water tank 1
1 has a horizontally long filtration tank 18 disposed above,
As shown in FIG. 1, a filter medium 20 having a large number of water passage holes formed therein is placed in a filtration tank 18, and a filter medium 20 on which a filtration bacterium adheres is placed on one end of the filtration tank 18. It is stowed and stored. As the filter medium 20, a filter medium described in Japanese Patent Application Laid-Open No. 3-146106, which was previously filed and published by the present inventors, is used. This is a filter material produced by mixing granules of shellfish flour, sawdust, diatomaceous earth and an appropriate amount of a binder with the main component shirasu flour, and sintering the granules. It has the characteristic that live fish can be used for a long period of time by neutralizing or alkalizing acidic substances, or by adsorbing odors including ammonia in water to purify water. In addition, it is preferable that the surface area of the filter medium 20 is large because a large amount of filter bacteria that convert ammonia contained in fish excrement into nitrite described above in the section of the prior art can be propagated in large quantities.

At one end of the filtration tank 18, a pump 21 is provided as an example of a supply means for sucking water in the water tank 11 into the filtration tank 18. Next, the pump 21 will be described in detail with reference to FIG. The pump 21 includes the drive motor 2
Two. The drive motor 22 is housed in a casing 23, and a lower pipe 24 extends downward from a lower surface of the casing 23. The lower end of the lower pipe 24 is disposed in the water of the water tank 11. In the middle of the lower pipe 24, a storage portion 24a of a water wheel (not shown) rotated by the drive motor 22 is provided. An upper pipe 27 whose front end is curved in an inverted J-shape is connected to the peripheral surface of the storage portion 24a. The tip of the upper pipe 27 is inserted into the filtration tank 18 through an opening 28 a formed in the lid 28 of the filtration tank 18, and the lid 28 prevents odor and condensation in the filtration tank 18. A plurality of ventilation holes 28b are formed. The pump 21 is operated by the drive motor 22 and the lower pipe 24
The water in the water tank 11 is sucked up from the inflow port at the lower end of the
4a through the outlet of the upper pipe 27 and the filtration tank 18
The sucked water is dropped on the filter medium 20 inside.

Similarly, as shown in FIG. 1, a siphon means 32 for returning the filtered water to the water tank 11 when the filtered water reaches a predetermined water level is accommodated in the other end of the filtration tank 18. . Next, referring to FIGS.
2 will be described in detail. The cylindrical casing 33 of the siphon means 32 is a cylindrical container body having a sufficiently large diameter and an open lower surface serving as a lower water intake port. The cylinder 34 is provided integrally. The upper end of the intake cylinder 34 communicates with the upper part of the cylindrical casing 33, and the intake port 34 at the lower end of the intake cylinder 34 is provided.
a is the height position W. of the lower end of the cylindrical casing 33. L. Height position E above width L. L. In the cylindrical casing 33, a small-diameter drain pipe 35 for discharging the filtered water into the water tank 11 is provided via a vertical rib 36. The upper end of the drain pipe 35 has an upper limit water level W. H
Slightly lower than the upper end opening 34b of the intake cylinder 34
And height are aligned. The lower part of the drain pipe 35 is
And extends downward through an opening 18a drilled in the other end.

Returning to FIG. 1, a horizontally long base 38 is attached to the back surface of the lid 14, and the switch 39 is turned on and off.
The operation and the stop of these equipments are performed. A fluorescent lamp 40 is provided on the back surface of the base 38, and a transparent lamp cover 41 is attached below the fluorescent lamp 40.

In the drawing, reference numerals 42 to 44 indicate mounting holes for the filtration tank 18, the pump 21, and the heater 37 provided in the mounting frame 16.

Next, the operation of the viewing water tank apparatus 10 according to one embodiment of the present invention will be described. As shown in FIG. 2, water and tropical fish are put in an aquarium 11, and
Is placed anywhere, for example, on a grate box. Aquarium 1
1 is provided with a placing table 12 at the lower part, so that there is a risk of corrosion due to water droplets adhering to the lower surface of the water tank 11 and it can be placed on a box that was conventionally difficult to place. Range can be expanded. Aquarium 11
The water inside is heated by the heater 37 to a predetermined temperature at which tropical fish and the like can easily survive. Ventilation in the viewing aquarium apparatus 10 is performed by flowing air through the air ventilation holes 13a and the ventilation holes 14a.

As shown in FIG. 1, the pump 21 is operated by the drive of the drive motor 22, and the water in the water tank 11 is constantly
It is dropped on the filter medium 20 at one end of the filter tank 18 via the upper and lower pipes 27 and 24.

The water filtered by the filter medium 20 is gradually stored in the filtration tank 18. At this time, as shown in FIG. 3, the siphon means 32
Gradually flows into the cylindrical casing 33 and the intake cylinder 34 from the opening on the lower surface of the cylindrical casing 33 and the intake port 34 a of the intake cylinder 34. Then, this water level is equal to the height position W. shown in FIG. When the water reaches H and the opening at the upper end of the drain pipe 35 is completely closed, the water in the filtration tank 18 is sucked into the drain pipe 35 at a stretch by the siphon action and dropped into the water tank 11.

Thereafter, with the drainage of the filtered water, the water level becomes equal to the height position W. of the opening of the cylindrical casing 33. L, while the water surface is at the height position E.E. of the intake port 34a at the lower end of the intake cylinder 34 on the way. After passing through L, air enters through the intake port 34a and the siphon is cut off. That is, when the water level falls, the intake port 34a of the intake cylinder 34 is
Height position W of the opening of the cylindrical casing 33; Width d from L
Only higher position E. L, so that only air
From a, it passes through the intake cylinder 34 and flows into the cylindrical casing 33, and the siphon is cut off by this air.

Then, the filtered water is gradually stored again in the filter tank 18, and the same operation is repeated until the drive motor 22 of the pump 21 is stopped. At this time, the filter material 2
0 repeats the operation of contacting with the outside air or being buried in the water, so that the filter bacterium attached to the filter medium 20 can directly take in oxygen from the outside air when the water level falls, and rise again after the water level falls. At this time, oxygen attached to the filter medium 20 can be taken into water by an amount corresponding to the surface area of the filter medium 20. As a result, the filtration bacteria can be activated to promote the filtration of water in the water tank 11, or sufficient oxygen can be given to tropical fish and the like in the water tank 11. In addition, the flow of water in the conventional filtration tank 18 is always constant.
Since the flow was in the horizontal direction from one end of 8 to the other end where the discharge port was located, dust and algae adhered to the case 19 and the filter medium 20 when the filtration tank 18 was used for a long time. However, there is a possibility that the flow area of the water may be narrowed and the filtration area of the filter medium 20 may be reduced. However, in this means, since the water in the filtration tank 18 shifts in the vertical direction, dust and algae are temporarily removed. Even if it adheres to the case 19 and the filter medium 20, the flow of water is hardly restricted, and almost the entire filtration area of the filter medium 20 can be used effectively.

When viewing the tropical fish in the aquarium 11, since the aquarium 11 has sharp corners, it is easy on the eyes and, like a conventional square aquarium, has two corners when viewed from the front. Blind spots are difficult to form, the water flow is smooth and the migration of tropical fish becomes natural, the algae, moss and dirt hardly adhere to the corners, and the inside of the tank is easy to clean. Moreover, since the water tank 11 is integrally formed of an acrylic resin, the strength of the water tank 11 is high, there is little danger of deterioration, discoloration, cracks, and the like due to sunlight, the durability is high, and the visibility is large. As in the case of the water tank described above, each of the wall surfaces is bonded at the corners, there is no fear that the bonded portion is peeled off and the water inside leaks. In addition, since the filter medium described in JP-A-3-146106 is used as the filter medium 20, the water filtering action is further improved, and the frequency of water change and cleaning of the water tank 11 is reduced.

The present invention is not limited to this embodiment, and is included in the present invention even if there is a design change without departing from the gist. For example, in the examples, as an aquarium, a freshwater fish, a saltwater fish or a tropical fish appreciation aquarium was illustrated,
Without being limited to this, the present invention can be applied to any other type of aquarium. Further, in the embodiment, the filter material is disclosed in
Although the filter medium described in Japanese Patent No. 146106 is adopted, any other filter medium may be used without being limited thereto. Further, a suction pump is used as the supply means, but the invention is not limited to this, and any other kind of supply means such as a pumping type that raises and lowers a water trough may be used. Furthermore, the siphon means is not limited to those of the embodiment, and may have any other siphon structure.

[0020]

According to the first aspect of the present invention, the water is supplied into the filtration tank by a pump, and when the filtered water reaches a predetermined water level in the filtration tank, the operation is returned to the water tank by siphon means. However, with this operation, the filter media repeats the operation of contacting the outside air or being buried in water,
Filtration bacteria can take in oxygen directly from the outside air when the water level falls, and can take in oxygen in the water when the water level falls and rises again. In addition, the flow of water in the conventional filtration tank always
Since it was a lateral flow from one end of the filtration tank to the other end with the discharge port, if the filtration tank has been used for a long time,
When dust or algae adhere to the filter medium, there is a risk that the flow of water is restricted to a certain range and the filtration area of the filter medium is narrowed. Is shifted in the vertical direction, so that almost all of the filtration area of the filter medium can be effectively used. Then, the siphon means can be simplified, and can be compactly stored in the filtration tank placed above the water tank. In addition, since the lid covering the upper part of the filtration tank has a plurality of ventilation holes, when the water inside rises and falls, the air in the filtration tank is breathed smoothly so that sufficient oxygen can be supplied. Can supply. Further, since the filter medium is accommodated in a case having a large number of water holes, it is possible to prevent the filter medium from scattering and to secure an effective place for disposing the siphon means in the filter tank.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of a viewing tank device according to an embodiment of the present invention.

FIG. 2 is an overall perspective view of the same.

FIG. 3 is an enlarged longitudinal sectional view of a siphon means.

FIG. 4 is a laterally enlarged sectional view of the siphon means.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Appreciation water tank apparatus 11 Water tank 12 Stand 13 Frame 13a Air ventilation hole 14 Lid 14a Ventilation hole 14b Opening 15 Lid 16 Mounting frame 17 Filtration device 18 Filtration tank 18a Opening 19 Case 20 Filtering material 21 Pump (supply means) Reference Signs List 22 Drive motor 23 Casing 24 Lower pipe 24a Storage portion 27 Upper pipe 28 Lid 28a Opening 28b Ventilation hole 32 Siphon means 33 Cylindrical casing 34 Intake cylinder 34a Intake port 34b Upper end opening 35 Drain pipe 36 Vertical plate rib 37 Heater 38 base Table 39 Switch 40 Fluorescent lamp 41 Lamp cover 42 Mounting hole 43 Mounting hole 44 Mounting hole

Claims (1)

(57) [Scope of request for utility model registration] 1. A vertically-long filter tank into which water pumped up by a pump is filled from above, a filter medium stored in the filter tank to filter the water, and a filter medium stored in the filter tank and provided by the filter medium. A siphon means for dropping the filtered water downward when the filtered water reaches a predetermined water level, wherein the siphon means is attached through the bottom of the filtration tank, The upper water inlet is a drain pipe located slightly below the upper limit water level of the filter tank, and covers the drain pipe in the filter tank with a gap,
The drain is supported by a plurality of vertical ribs provided around the drain pipe, and the bottom is an open lower water intake port and is disposed with a small gap from the bottom of the filtration tank, and is more sufficiently than the drain pipe. A cylindrical casing having a large diameter, and an intake cylinder which is integrally attached to a side portion of the cylindrical casing, an intake port is formed at a position slightly above the lower water intake port, and an upper portion communicates with the cylindrical casing. In addition, a lid having an opening for receiving water from the pump and a plurality of ventilation holes is provided at an upper portion of the filtration tank, and the filtration material has a number of water passage holes, A filtering device, which is housed in a case arranged on one side of a filtration tank.