JPH10323516A - Filtering device for water purification - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a device to use a water purification function that an electric stone such as tourmaline ore has, to water for a cooling tower and cleaning water of a circulation type water cleaning device such as a fountain installed in a park, etc. SOLUTION: Two stages of upper and lower filter rooms 14, 15 partitioned with perforated dishes are formed in a filter tank main body 1, granular general filter media (a) are housed in the upper filter room 14 and electric filter media (b) made of granular electric stones are housed in the lower filler room 15. A connection pipe 2 (a cleaning objective water feed part, a back-washing water discharge part) is connected to the upper part of the filter tank main body 1 and a connection pipe 3 (a cleaned water discharge part, a back-washing water feed part) and a back-washing air feed part are provided at the lower part of the filter tank main body 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to cold water as a cooling medium for a building cooling and heating device, hot water as a heating medium, water for a cooling tower for cooling a cooling medium, fountains installed in parks, etc. The present invention relates to a filtration device used in a water purification device for purifying circulating water while performing a constant forced circulation such as a bath water of a type.

[0002]

2. Description of the Related Art Circulation purification of used water is performed from a predetermined water tank.
A circulation line returning to the water tank is formed, and each mechanism necessary for purifying the water is interposed in the circulation line. Specifically, from the outflow side of the water tank, a dust removal unit having a coarse primary filter, a pump unit for forced circulation, a filtration unit for removing minute solids,
A sterilization unit or the like in which a sterilization device or a sterilization device is installed is interposed in a circulation pipe, thereby purifying the water by circulating the water.

[0003] In addition, the above-mentioned filtering section is filled with a filtering material such as crystalline silica sand (95% SiO ₂ glass), smokeless ink (suitable for removing algae), zeolite (deodorization, decolorization, etc.), activated carbon and the like. Or are incorporated in a laminated structure.

[0004]

By the way, one kind of tourmaline ore or other tourmaline, in an electrolyte solution, causes a charge to appear on the crystal surface by spontaneous polarization based on its own strain,
It is known that a weak current is passed through a liquid to promote ionization of water and activate water, thereby providing a unique water purification function (Japanese Patent Publication No. 7-38987).

However, when the ore is used as it is as a filter material, the number of electrodes may be increased as fine powder in order to function as an ore of the ore.
Inconvenient for handling as a filtering material with fine powder,
When the ore surface is covered with organic matter and oxides and contaminated,
It was unsuitable as a filter material because the specific function was not exhibited at all. Therefore, the present invention proposes a filtering device capable of sufficiently exhibiting a specific function of tourmaline ore or the like.

[0006]

According to the present invention, there is provided a filtration device for water purification in which a filter chamber is formed in a filter tank main body with upper and lower two-stage filtration chambers partitioned by a perforated plate. In the lower filtration chamber, an electrofiltration body made of tourmaline granules is housed, a purification target water supply unit and a backwash discharge unit are provided in the upper part of the filtration tank body, and a clean water discharge unit and a backwash water are provided in the lower part of the filtration tank body. A supply unit and a back-flow cleaning air supply unit are provided.

In the above apparatus, the filter tank body is formed in a cylindrical shape, the connection port of the backwashing water supply section is formed in the discharge direction along the inner peripheral surface, and the eye hole of the lowermost plate is formed as follows. It is inclined in the direction in which it is spirally ejected from below and drilled, or tourmaline ore whose effective diameter is adjusted to 0.5 mm to 3.0 mm, or a filter tank, An ultrasonic generator is additionally provided.

[0008] Therefore, the filter tank has a two-stage structure in the upper and lower parts, so that the specific function (electrolysis of water) of tourmaline can be sufficiently exhibited, and the filtration function can be sufficiently exhibited. When contaminants adhere to the surface of tourmaline and its function deteriorates, by supplying backflow of air together with backflow of cleaning water, it becomes possible to stir and wash tourmaline with high specific gravity, It can restore the unique function.

In particular, in the above-mentioned backwashing, the flow of the backwashing is swirled by specifying the direction of discharge of the backwashing water supply port and the direction of perforation of the hole in the lowermost plate serving as the bottom surface of the tourmaline storage portion. The cleaning effect is enhanced by shaping or applying ultrasonic vibration.

[0010]

Next, an embodiment of the present invention will be described. In the filtration device for water purification shown in the embodiment, an upper connection pipe 2 and a lower connection pipe 3 are connected to a cylindrical filtration tank body 1, and a backflow air supply unit 4 and an ultrasonic wave generation unit 5 are additionally provided. Things.

The inside of the filtration tank main body 1 is a three-stage
Partitioned at 1, 12, and 13, top plate 11 and intermediate plate 1
2, an upper filtration chamber 14 is formed, and a lower filtration chamber 15 is formed between the intermediate plate 12 and the lowermost plate 13.
The upper filtration chamber 14 has an effective diameter of 0.5 mm to 3.0 m.
m containing a general filter body a composed of crystalline silica sand,
The lower filtration chamber 15 has an effective diameter of 0.5 mm to 3.0 m.
m containing an electrofilter b made of tourmaline ore. The eye holes of the eyelets 11, 12 and 13 have such a diameter that the filtering materials a and b do not pass through. In particular, the eye hole 131 of the lower eyelet 13 is discharged from a connection port 31 described later. It is formed by inclining in the direction of jetting upward from below in the spiral direction corresponding to the direction.

The upper connecting pipe 2 is connected to the upper part of the filter tank main body 1 and includes a switching water supply pipe 22 (a water supply section to be purified) 22 and a washing and discharging pipe (backwashing and discharging section) via a switching valve 21. ) 23.

The lower connecting pipe 3 has a connecting port 31 provided along the lower inner peripheral surface of the filtration tank 1 so as to discharge backwash water, and a switching tank 32 through which a tank return pipe (clean water) is supplied. (A discharge part) 33 and a pressure pipe (a backwash water supply part) 34.

The back-flow cleaning air supply unit 4 includes the filtration tank body 1.
And a blower 42 connected to the discharge pipe 41 and disposed below the bottom plate 13 of the ultrasonic wave generator 5.
Alternatively, the filter tank body 1 itself may be configured to provide vibration, or a vibrator may be disposed in the filter tank body 1 to directly apply vibration to the internal liquid.

[0015] The above-mentioned filtration device is used by being incorporated in a circulation type purification device. For example, as shown in Figs.
, A trash removal unit 7 and a pump unit 8 using a water tank. The water tank section 6 corresponds to, for example, a water storage tank, a fountain pond or a bathtub of a cooling tower, and the trash removal section 7 includes a coarse primary filter for removing large trash which is a hindrance to circulation. Yes,
The water tank section 6 and the pump section 8 are connected via a dust removing section 7 with a service water discharge pipe 9, and the discharge side of the pump section 8 is further connected to the service water supply pipe 22 and the pressure pipe 34 of the filtration device. Do it.

The cleaning of the service water A in the water tank 6 is performed by connecting the switching valves 21 and 32 to the filter tank main body 1 and the water supply pipe 22 and the filter tank main body 1 and the water tank return pipe 33, respectively. Then, the pump unit 8 is operated. Then, the water to be purified (water A) in the water tank 1 enters the pump section 8 through the water discharge pipe 9 and is pressed into the filtration tank body 1 by the pressure of the pump section 8. Filtration tank body 1
The water A flowing into the inside passes through the crystalline silica sand (general filtration body) a in the upper filtration chamber 14 and the tourmaline ore (electric filtration body) b in the lower filtration chamber 15 to become clean water B. The water is discharged to the water tank return pipe line 32 connected to the water tank body 1 and returned to the water tank unit 6. In particular, by contacting with tourmaline ore (electrofiltration body) b, a purifying action that cannot be obtained with a normal filter material is performed by elution of a tourmaline-containing substance into service water and promotion and activation of ionization by an electrolytic action. As described above, the operation of the pump unit 8 causes the water A in the water tank 6 to circulate through the filtration device to continuously purify the water a.

When the filter is operated for a certain period of time, each filter a, b
When the purification function is reduced due to contamination of the surface of the
The cleaning operation is performed by switching the connections of the first and the second. That is, the pipe of the upper connecting pipe 2 connects the filtration tank main body 1 and the washing / discharging pipe 23, and the pipe of the lower connecting pipe 3 connects the filtering tank main body 1 and the pressure pipe 34 to connect the pump section 8. Get it up and running. At the same time, the backflow cleaning air supply unit 4 and the ultrasonic wave generation unit 5
Work. Then, the water A in the water tank section 6 is press-fitted into the lower part of the filtration tank body 1 by the pump section 7, and in particular, the connection port 31 is formed so as to blow out along the inner periphery of the filtration tank body 1. It becomes spiral in 1 of them. Further, since the air is also supplied at the same time, the pressurized water and the air are jetted from the eye holes 131 of the lowermost plate 13 in the inclined direction, so that the filter b in the lower storage chamber 15 is caught in the vortex. In the upper storage chamber 14, the filter body a is agitated by the upward blowing of the pressurized water and the air, and the contaminants attached to the surface thereof are separated by rubbing each other. It is discharged out of the filtration tank body 1.

Therefore, it is possible to easily clean the surface of the electrofiltration body having a relatively high specific gravity, and to obtain a filtration device that can effectively use the water activating function of tourmaline, thereby providing a water purification device. It is.

In the above embodiment, the filtration tank body 1
Although the example in which the upper and lower connecting pipes provided with the switching valve are connected from the above is shown, a plurality of connecting pipes each provided with an on-off valve may be used. Further, in the case where the filtration device is incorporated in a circulation type purification device, the water tank portion 1 is simply shown as a water tank, but specifically, water for a cooling tower, a fountain installed in a park or the like, a circulation type bath water, etc. In addition, a sterilizing unit (for irradiating ultraviolet rays, mixing ozone, etc.), a chemical unit for adding a disinfectant, etc. should be provided at an appropriate position in the pipeline corresponding to the equipment. Alternatively, the backwash water may be supplied from a supply source different from the water tank unit.
In addition, the general filter is not limited to the above-mentioned crystalline silica sand, but may be any combination of quartz grains, garnet, porous ceramics, zeolite and the like.

[0020]

As described above, according to the present invention, a two-stage upper and lower filtration chamber partitioned by a perforated plate is formed in the main body of the filtration tank, and a granular general filter is placed in the upper filtration chamber, and an electric stone is placed in the lower filtration chamber. For storing an electric filter made of granular material, providing a water supply section to be purified and a backwash discharge section at the upper part of the filter tank body, and a clean water discharge section and a supply section of backwash water at the lower part of the filter tank body, and for backwashing. It is provided with an air supply unit, and purifies water by using a granular general filter and an electric filter containing tourmaline ore such as tourmaline ore. By providing the filter, a filtration device capable of fully and effectively utilizing the unique water purification function of the electric filter can be provided.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the main part.

FIG. 3 is a pipeline diagram (at the time of filtration water purification) showing an example of incorporation of the device of the present invention into a water purification device.

FIG. 4 is a pipeline diagram (at the time of backwashing) showing an example of incorporating the device of the present invention into a water purification device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Filtration tank main body 11, 12, 13 Plate 14 Upper filtration chamber 15 Lower filtration chamber 2 Upper connection pipe 21 Switching valve 22 Water supply pipe (purification target water supply part) 23 Washing discharge pipe (backwash discharge part) 3 Lower connection pipe 31 Connection port 32 Switching valve 33 Water tank return pipe (clean water discharge section) 34 Pressure pipe (Backwash water supply section) 4 Backflow air supply section 41 Discharge pipe 42 Blower 5 Ultrasonic generator 6 Water tank Part 7 Dust removal part 8 Pump part 9 Water discharge pipe

──────────────────────────────────────────────────の Continued on front page (51) Int.Cl. ⁶ Identification code FI B01D 29/38 520D 35/02 Z

Claims (5)

[Claims] 1. An upper and lower two-stage filtration chamber partitioned by a perforated plate is formed in a main body of a filtration tank, and a granular general filter is provided in an upper filtration chamber, and an electric filter made of tourmaline is provided in a lower filtration chamber. It should be provided with a purifying water supply section and backwash discharge section at the top of the filter tank body, and a clean water discharge section, backwash water supply section, and backwash air supply section at the bottom of the filter tank body. A filtration device for purifying water. 2. The purification target water supply unit and the backwash discharge unit are:
The filter tank body is connected to the filter tank body as an upper connecting pipe of a single pipe provided with a switching valve, and the clean water discharge section and the supply section of backwash water are provided as a single lower connecting pipe provided with a switching valve. The filtration device for water purification according to claim 1, wherein the filtration device is connected to a filter. 3. The filter tank body is formed in a cylindrical shape, and a connection port of the backwashing water supply section or the lower connecting pipe with the filter tank is formed in a discharge direction along the inner peripheral surface, and a lowermost plate is provided. Of the eye,
3. The filtration device for purifying water according to claim 1, wherein the filtration device is provided so as to be inclined from a lower part to an upper part in a direction in which the liquid is ejected in a spiral shape corresponding to the discharge direction. 4. The filtration device for purifying water according to claim 1, wherein the tourmaline ore is a tourmaline ore having an effective diameter of about 0.5 mm to about 3.0 mm. 5. The filtration device for water purification according to claim 1, wherein an ultrasonic generator is provided in the filtration tank.