WO2010029604A1 - Water purification device - Google Patents

Abstract

This invention provides a water purification device which can efficiently purify water, for example, for raising aquarium fishes. Air bubbles are supplied and dispersed in treatment object water by a treatment object water supply device (20). The treatment water with air bubbles dispersed therein supplied from the treatment water supply device is delivered in a tangential direction within an agitating part (32) in a vertically long cylindrical treatment tank (30) through a nozzle (26) at such a pressure that the treatment water is reservoired in the overall height in a vertical direction of the treatment tank, whereby a swirling flow (S) of the treatment water is formed within the agitating part (32). In this case, contaminants contained in the treatment object water are captured in the air bubbles by allowing the swirling flow (S) to stay for a predetermined period of time. The air bubbles with the contaminants being captured therein are allowed to ascend, are pushed out from the treatment tank, and are received in a contaminant receiving tank (40). The water cleaned by removing the contaminants is allowed to flow downward by the pressure of water in the upper part of the agitating part (32) and is withdrawn through a purified water withdrawing passage (27).

Description

Water purification equipment

The present invention relates to a water purification apparatus, and more particularly to an apparatus capable of efficiently purifying water for breeding appreciation fish and the like.

For example, when appreciating fish are raised in an aquarium, food is left uneaten in the water in the aquarium. Therefore, water purification is indispensable.

Conventionally, a method has been proposed in which bubbles are generated in water and a pollutant is attached to the bubbles to remove them (Patent Document 1, Patent Document 2, Patent Document 3, and Patent Document 4). Is not very expensive.

In contrast, by sending water mixed with bubbles into the cylindrical septic tank in the tangential direction, and generating a strong swirling water flow and raising it, the contact efficiency between the pollutants and the bubbles is increased and the pollutants are turned into bubbles. There has been proposed a method in which air bubbles are trapped and bubbles are separated from clean water to improve the removal efficiency of pollutants (Patent Documents 5 and 6).

Japanese Patent No. 3676157 Japanese Patent No. 3621859 JP 07-194272 A Japanese Patent Laid-Open No. 05-304857 US Pat. No. 5,736,034 US Pat. No. 6,808,625

However, in the methods described in Patent Documents 5 and 6, since the bubbles capturing the pollutant are separated from the clean water using the difference in specific gravity, the bubbles capturing the pollutant are drawn into the clean water again. Clean water was sometimes contaminated.

In view of such problems, an object of the present invention is to provide a water purification device that can efficiently and reliably purify water for breeding, such as appreciation fish.

The water purification apparatus according to the present invention includes a treated water supply apparatus that takes in air and treated water to be purified, and distributes and supplies bubbles to the treated water, and a large-diameter cylindrical shape in the middle in the vertical direction. A swirling flow of water to be treated in which the bubbles are dispersed is formed in the stirring portion, and the swirling flow stays for a predetermined time while swirling in the stirring portion. A treatment tank that traps the pollutant in the water to be treated in bubbles and raises the bubbles that trapped the pollutant, while flowing clean water from which the pollutants have been removed downward by the water pressure above the stirring unit; The treated water in which bubbles are dispersed from the treated water supply device is treated in the stirring unit by discharging the treated water in a tangential direction in the stirring unit and at a pressure such that the treated water is accumulated at the total height in the vertical direction of the treatment tank. Forms a swirling flow of water Nozzles to be removed, purified water extraction passages for extracting clean water from the lower part of the treatment tank, and provided at the upper end of the treatment tank, the bubbles capturing the pollutant are lifted and pushed out of the treatment tank by the subsequent bubbles, And a pollutant receiving tank for receiving air bubbles capturing the extruded pollutant.

One of the features of the present invention is that a large-diameter cylindrical stirring section is formed in the middle of a vertically long cylindrical processing tank, and treated water in which bubbles are dispersed is discharged in the tangential direction of the stirring section, so that a swirling flow is generated in the stirring section. It is in the point which made it hold for a fixed time.

This makes it possible to lengthen the contact time between the pollutant and the bubbles and improve the trapping efficiency of the pollutant by the bubbles. As a result, if the purification efficiency is the same, a reduction in size can be realized as compared with the conventional apparatus. The diameter of the agitation part may be larger than the diameter of the main part of the treatment tank (excluding the agitation part), for example, about 1.2 to 3.0 times the main part of the treatment tank. Can be adopted.

The second feature of the present invention is to separate bubbles from the clean water by raising the bubbles capturing the pollutant due to the difference in specific gravity, and flowing the clean water downward by the head pressure, while processing the bubbles capturing the pollutant It is in the point which was made to collect near the water surface of the upper end of a tank.

This makes it possible to improve the purification efficiency without the bubbles capturing the pollutants coming into contact with clean water.

The stirring unit may be a large-diameter cylindrical shape, but the upper part is shaped so that the cross-sectional area gradually decreases, as shown in the following embodiment, so that the bubbles capturing the pollutant rise smoothly upward. It is good to form.

Further, if the treated water supply device is disposed below the treatment tank on the central axis of the treatment tank, the apparatus can be further compacted.

The treated water supply device and the treatment tank are built in the outer case so that they can be taken out, and the outer case is configured to be hookable on the upper end of the wall of the aquarium fish tank, while the treated water supply device and the treatment tank taken out from the outer case are attached to the ornamental fish. If it can be thrown into the aquarium, the optimum method of using the water treatment apparatus can be selected according to the size and shape of the aquarium fish tank.

It is an external view which shows preferable embodiment of the water purification apparatus which concerns on this invention. It is a partially cut perspective view which shows the said embodiment. It is a disassembled perspective view which shows the said embodiment. It is a figure which shows typically the effect | action of the stirring part in the said embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Water purification apparatus 20 To-be-processed water supply apparatus 21 Water intake passage 22 Atmospheric intake passage 23 Venturi nozzle 24 Water supply pump 25 Water supply passage 26 Nozzle 27 Purified water extraction passage 30 Treatment tank 31 Main body 32 Stirring part 40 Contamination receiving tank 50 Outer case

Hereinafter, the present invention will be described in detail based on specific examples shown in the drawings. 1 to 4 show a preferred embodiment of a water purification apparatus according to the present invention. In the figure, the water purification apparatus 10 includes a to-be-treated water supply apparatus 20, a treatment tank 30, a nozzle 26, a purified water extraction passage 27, a pollution receiving tank 40, and an outer case 50.

In the treated water supply device 20, a water intake passage 21 that takes in water to be treated (treated water) and an outside air intake passage 22 that takes in outside air are connected to a venturi nozzle 23, and the venturi nozzle 23 is connected to an intake port of a water supply pump 24. The water supply passage 25 of the water supply pump 24 extends upward, and a nozzle 26 is connected to the tip of the water supply pump 24. The air and the water to be treated are taken in, and bubbles are dispersed in the water to be treated. It is supposed to be.

The treatment tank 30 has a three-dimensional shape in which a large-diameter cylindrical stirring unit 32 is formed in the middle in the vertical direction of a vertically long cylindrical main body 31 extending in the vertical direction. The water supply pump 24 is laid out.

The upper part of the stirring unit 32 of the treatment tank 30 is formed in a shape such that the cross-sectional area gradually decreases, and the nozzle 26 of the treated water supply device 20 is disposed in the stirring unit 32. The swirling flow of treated water into the agitating unit 32 by discharging the treated water in which bubbles are dispersed in a tangential direction in the agitating unit 32 and with a pressure such that the treated water accumulates in the total height in the vertical direction of the treatment tank 30. S is formed.

In addition, a portion of the main body 31 of the treatment tank 30 above the stirring unit 32 can be expanded and contracted by sliding, and a purified water extraction passage 27 is connected to the bottom of the main body 31 of the treatment tank 30, so that the purified water extraction passage 27 is connected. Is extended outward, and a swirl flow S of water to be treated in which bubbles are dispersed is formed in the stirring unit 32, while the swirl flow S swirls in the stirring unit 32. The pollutant of the water to be treated is trapped in the bubbles by staying for a predetermined period, and the bubbles trapping the pollutant rise in the main body 31, while the clean water from which the pollutants are removed is the water pressure above the stirring unit 32. So that it flows downward and is taken out from the purified water outlet passage 27.

In addition, a pollution receiving tank 40 for receiving the bubbles B capturing the pollutant is provided at the upper part of the main body 31 of the processing tank 30, and the upper end opening of the pollutant receiving tank 40 can be sealed by a lid 41, The trapped bubbles rise and are pushed out from the main body 31 of the treatment tank 30 by the subsequent bubbles, and the bubbles capturing the extruded pollutant are received by the pollution receiving tank 40.

The treated water supply device 20 and the treatment tank 30 are detachably incorporated in the outer case 50, and the hook 51 of the outer case 50 can be hooked on the upper end of the wall surface of the aquarium fish tank. The water supply device 20 and the treatment tank 30 are extracted from the outer case 50 and put into the water tank for purification treatment.

For example, when purifying water in an aquarium fish tank (not shown), the hook 51 of the outer case 50 is hooked, the tip of the intake passage 21 is immersed in the water tank, and the water supply pump 24 is operated. A negative pressure is generated, and water to be treated is taken into the water intake passage 21, and outside air is taken into the outside air intake passage 22, and bubbles are dispersed in the water to be treated by the venturi nozzle 23. Be sent.

The water to be treated in which bubbles are dispersed is sent to the nozzle 26 through the water supply passage 25, and at a pressure such that the water does not overflow from the nozzle 26 in the tangential direction of the stirring unit 32 and from the upper end of the main body 31 of the treatment tank 30. Thus, the swirl flow S of the water to be treated is formed in the stirring section 32.

The swirling flow S does not immediately rise in the main body 31 of the treatment tank 30 but stays for a predetermined time while swirling in the stirring unit 32 due to the shape of the stirring unit 32, thereby hanging on the water to be treated. Most of the turbid contaminants are trapped in the bubbles, and the bubbles trapped in the contaminants rise in the main body 31 due to the difference in specific gravity and reach the upper end of the main body 31 of the treatment tank 30. The bubbles accumulated on the water surface at the upper end are pushed out, and the pushed-out bubbles overflow into the pollution receiving tank 40 and are received by the pollution receiving tank 40.

On the other hand, the clean water from which the pollutants are removed flows under the pressure of the water above the stirring unit 32, is taken out from the purified water removal notification 27 and returned to the water tank, and thus the water in the water tank is purified. The

Depending on the situation of the aquarium fish tank, the water treatment device 10 may not be hung on the aquarium. In such a case, when the treated water supply device 20 and the treatment tank 30 are extracted from the outer case 50 and put into the water tank, the water in the water tank can be purified in the same manner as described above.

The inventors of the present invention have prototyped a water purification apparatus in which the inner diameter of the treatment tank 30 is 6 cm, the inner diameter of the stirring section 32 is 13 cm, and the height from the stirring section 32 to the upper end of the treatment tank 30 is 15 cm to 25 cm. The treated water was sent in the tangential direction into the stirring section 32 at a discharge rate of 6 to 10 L / min, and the purification efficiency was confirmed. As a result, it was about 3 to 5 times better than the devices described in Patent Documents 5 and 6. It was confirmed that the purification efficiency was exhibited.

Claims (4)

A treated water supply device (20) for taking in air and treated water to be purified, and supplying bubbles by dispersing bubbles in the treated water;
A vertically long cylindrical shape in which a large-diameter cylindrical stirring section (32) is formed in the middle in the vertical direction, and a swirling flow of water to be treated in which the bubbles are dispersed is formed in the stirring section (32). The swirling flow stays for a predetermined time while swirling in the stirring unit (32) to capture the pollutant in the water to be treated in bubbles and raise the bubbles that have captured the pollutant while the pollutant is removed. A treatment tank (30) that causes the clean water to flow downward by the water pressure above the stirring unit (32), and
The treated water in which bubbles from the treated water supply device (20) are dispersed is at a pressure such that the treated water accumulates in the tangential direction in the stirring section (32) and in the total height in the vertical direction of the treatment tank (30). A nozzle (26) for forming a swirling flow of treated water in the stirring section (32) by being discharged by
A purified water extraction passageway (27) for extracting clean water from the lower part of the treatment tank (30), and
Provided at the upper end of the treatment tank (30), a bubble that captures the pollutant floats up and is pushed out of the treatment tank (30) by the subsequent bubbles, and receives a bubble that captures the extruded pollutant Tank (40),
A water treatment apparatus comprising: The water treatment apparatus according to claim 1, wherein the upper part of the stirring part (32) is formed in a shape such that the cross-sectional area gradually decreases. The water treatment device according to claim 1, wherein the treated water supply device (20) is disposed below the treatment tank (30) on the central axis of the treatment tank (30). The water supply apparatus (20) and the treatment tank (30) are further provided with an outer case (50) that can be taken out, and the outer case (50) is configured to be hooked on the upper end of the wall surface of the aquarium fish tank. On the other hand, the water treatment apparatus according to claim 1, wherein the treated water supply device (20) and the treatment tank (30) taken out from the outer case (50) can be put into the aquarium fish tank.

Images