JPH08141565A - Water purifying apparatus - Google Patents

Abstract

PURPOSE: To develop a water purifying apparatus which is small in size and makes purified water which can clear surely the legal standards of drinking water only with power equipment. CONSTITUTION: This apparatus is composed of a filtration part port to filter raw water containing impurities and miscellaneous germs and an electromagnetic opening/closing valve for water supply which is installed at the outlet of water supply passage 23 for filtered purified water and close the passage 23 when water supply is stopped.

Description

Detailed Description of the Invention

[0001]

[Field of Industrial Application] The water purifier according to the present invention can be easily and easily supplied from river water or stored water as long as there is a power source, even in remote areas such as mountainous remote areas and remote islands where water supply and simple water supply are not installed. The present invention relates to a compact general-purpose water purification device capable of producing drinking water.

[0002]

2. Description of the Related Art Securing drinking water is a very important issue at business offices located in remote areas such as remote areas of mountains and remote islands. Therefore, simple sand filters and seawater desalination devices are put to practical use at business establishments where simple water supply is not currently installed. In the former case, since it is a mechanical filtration, it can remove a certain amount of dust contained in raw water to some extent, but there is a problem that it is not possible to remove fine dust and miscellaneous bacteria. There was a problem that management was very troublesome. In the latter case, there is a problem that large-scale equipment is required and maintenance of the device is very difficult.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to develop a water purification apparatus which is small in size and which can reliably exceed the water supply law standard established as drinking water only with power supply equipment.

[0004]

[Means for Solving the Problems] The water purifying apparatus (a) according to claim 1 has a "filter section (b) for filtering raw water containing impurities and various bacteria, and a water supply channel (23) for the filtered purified water. And an electromagnetic on-off valve (21) for water supply, which is arranged at the outlet of the water supply and closes the water supply passage (23) when the water supply is stopped.

According to this, since the water supply electromagnetic on-off valve (21) is installed on the outlet side of the water supply channel (23), the on-off valve (21) is automatically closed when the water supply is stopped, and various bacteria It does not run up from the water supply side into the equipment and breed inside, and it is possible to supply clean water equivalent to tap water for a long period of time.

The water purifying device (a) according to claim 2 has a "filtering part"
(B) is No. 1 microfilter (2) and No. 2 microfilter (3), silver ion activated carbon storage tower (4) and hollow fiber type ultrafiltration membrane storage tower (5)
It is composed of and ”.

[0007] As a result, the hollow fiber type ultrafiltration membrane storage tower is used to store river water and stored water containing coarse dust, fine dust, and miscellaneous bacteria.
It is gradually filtered in the step before (5), and as a result, the finest hollow fiber type ultrafiltration membrane is not burdened, and the hollow fiber type ultrafiltration membrane can be used for a long period of time.

The water purification apparatus (a) according to claim 3 is characterized in that "an ultraviolet sterilization tower (6) for sterilizing filtered purified water is installed in a water supply channel (23)" Since bacteria in purified water are sterilized or sterilized by ultraviolet rays at the stage, no disinfectant is required and the handling is very easy. Further, since all the constituent elements of this device are electrically operated, it does not require special chemicals such as bactericides, can be operated with a power source, and maintenance is very simple. .

The water purification apparatus (a) according to claim 4 is characterized in that "the operation changeover switch allows the microfiltrate to pass through the hollow fiber type ultrafiltration membrane storage tower (5) in the direction opposite to the water flow direction during purification. It is characterized by the fact that a backwash water passage for water is installed. ”This makes it possible to wash away fine dust and miscellaneous bacteria that have accumulated in the hollow fiber type ultrafiltration membrane, and to extend the life of the hollow fiber type ultrafiltration membrane. It can be extended.

[0010]

The present invention will be described in detail below with reference to the illustrated embodiments.
FIG. 1 is a partially omitted front view of a water purification apparatus (a) according to the present invention, FIG. 2 is a front view of the inside viewed from the front, and FIG. 3 is a back view of the inside.

Raw water to be treated is valley water, spring water,
It is stored water such as river water and rainwater, in which large and small trash, Escherichia coli, general bacteria, red rust, COD (sludge-like substances such as humic substances), etc. are present, and various unpleasant odors due to dissolved substances. Have been issued.

FIG. 4 shows a schematic flow chart of the present invention. The raw water (25) is stored in the underground tank (24) and is pumped by the pump (1). (16) is a raw water cock installed at the base of the pumping pipe (26). The pumped raw water is removed by the No. 1 microfilter (2) to remove coarse dust, and then the No. 2 microfilter (3) to remove fine dust, thus being mechanically filtered. The filtrate enters the silver ion activated carbon storage column (4), and fine dust is adsorbed by the activated carbon, and at the same time, the bacteria in the filtrate are effectively sterilized by the silver ions contained in the activated carbon.

The filtrate adsorbed and sterilized with activated carbon subsequently enters the hollow fiber type ultrafiltration membrane storage tower (5), where ultrafine dust and bacteria are further removed. The filtrate filtered by the hollow fiber type ultrafiltration membrane storage tower (5) enters the ultraviolet sterilization tower (6) installed in the purified water supply channel (23), and irradiates ultraviolet rays in the ultraviolet sterilization tower (6). After receiving and almost completely sterilized, water purification cock
(17), Water will be supplied through the water supply solenoid valve (21). Hereinafter, each part will be described in detail.

As shown in FIG. 3, in this embodiment, the pump
(1) is installed at the central bottom of the water purifier body and connected to the underground tank (24) by the pumping pipe (26) so that the pumped raw water can be supplied to the mechanical filter (2). It has become. The No. 1 microfilter (2) contains a 50 μm precision filter (not shown) to filter dust of 50 μm or more.

After removing coarse dust with the No. 1 microfilter (2), the filtrate of the No. 1 microfilter (2) is installed next.
o.2 supplied to the microfilter (3). No.2 microfilter (3)
A 5 μm precision filter (not shown) is housed therein to filter relatively fine dust of 5 μm or more.

In FIG. 3, a No. 1 microfilter (2) is installed on the left side of the main body of the apparatus, and a No. 2 microfilter (3) is installed on the right side of the main body, which is derived from the No. 2 microfilter (3). The separated pipe is a bulkhead (2
It comes out to the front side shown in Fig. 2 through 7). A silver ion activated carbon storage tower (4) is installed on the front left. The silver ion activated carbon storage tower (4) is filled with silver ion activated carbon, and impurities contained in the filtrate filtered by the No. 2 microfilter (3) are further adsorbed here by the activated carbon and at the same time silver. It is designed to be sterilized or sterilized to some extent by the action of ions.

From the pumping pipe (26) to the silver ion activated carbon storage tower
Up to (4), there is only one water passage, but the water passage that exits the silver ion activated carbon storage tower (4) has a complicated branch. That is, the pipe (P4) is branched into a pipe (P5) and a pipe (P6) on the way,
Piping (P5) is further branched into piping (P7) and piping (P8), and piping (P7)
Is connected to the bottom inlet of the hollow fiber type ultrafiltration membrane storage tower (5). Piping (P8) is further divided into piping (P9) and piping (P10),
The pipe (P9) is connected to the upper end outlet of the hollow fiber type ultrafiltration membrane storage tower (5).

Further, the pipe (P6) is branched into a pipe (P11) and a pipe (P12), and the pipe (P11) is connected to the upper part of the hollow fiber type ultrafiltration membrane storage tower (5), and the pipe (P12) Is connected to the entrance of the ultraviolet sterilization tower (6). Here, the inlet / outlet valve (15c) for filtering water is installed in the pipe (P5), and the inlet / outlet valve for backwash (15a) is installed in the pipe (P5).
Installed in 6), the on-off valve (15b) on the filtration water outlet side is the piping (P12)
Installed on the outlet side of the backwash outlet side opening (15d) piping
It is installed in each. In this part of the piping, the filtration water passage is composed of pipes (P5), (P7), (P11) and (P12), and the backwash water passage is pipes (P6), (P11), (P7), (P8)
And (P10).

A hollow fiber type ultrafiltration membrane (5) is provided with a hollow fiber type ultrafiltration membrane (5). The hollow fiber type ultrafiltration membrane has a function of filtering water passing from the pipe (P7) side to the pipe (P11) side to filter fine inclusions of 0.01 μm or more, and conversely the pipe (P11). It has a function of letting out the fine dissolved substance filtered out by the hollow fiber type ultrafiltration membrane from the hollow fiber type ultrafiltration membrane by the water flowing from the pipe to the side of the pipe (P7). Therefore, here, the substance of 0.01 μm or more of water flowing from the pipe (P7) side to the pipe (P11) side is removed. Since Escherichia coli and various bacteria are about 0.1 μm, various bacteria, Escherichia coli and other minute inclusions are effectively removed here.

The filtrate filtered by the hollow fiber type ultrafiltration membrane storage tower (5) enters the ultraviolet sterilization tower (6) through the pipes (P11) and (P12). UV light bulb here (not shown)
Is installed to irradiate a filtrate passing through the ultraviolet sterilization tower (6) to almost sterilize or sterilize bacteria in the filtrate. Purified water supply channel at the exit of the ultraviolet sterilization tower (6)
(23) is installed, and the water purification cock is installed in the water purification water supply channel (23).
(17), a flow meter (19), a silver germicide container (20) and a water supply side solenoid on-off valve (21) are installed respectively.

Further, a foot switch (11) is installed in the main body of the apparatus so that the water supply side electromagnetic on-off valve (21) can be automatically opened and closed. Furthermore, a heat-retaining lamp (13) is installed inside the device, and when the room temperature drops, it is turned on to prevent freezing. Incidentally, (18)
Is a drainage backwash cock installed at the outlet of the pipe (P10), (7) is an operation changeover switch, (8) is an ultraviolet lamp switch, and (9) is a pump switch installed on the front panel of the main body of the device. , (10) are power switches. Further, (22) is a fuse of this device.

Next, the operation of the device of the present invention will be described.
When supplying water, first set the operation selector switch (7) to the clean water side. As a result, the solenoid on-off valves (15c) and (15b) are opened, and the solenoid on-off valves (15a) and (15d) are closed. Then turn on the UV lamp switch (8) to turn on the UV sterilization tower.
Turn on the ultraviolet lamp in (6). Next, raw water cock (1
6) Open the water purification cock (17) and drainage / backwash cock (18) to prepare for water supply. After that, the pump switch (9) is turned on and the pump (1) is operated. Finally, when the power switch (10) or foot switch (11) is stepped on, the pumped raw water (25) passes through the pipe (26) and enters the No. 1 microfilter (2), and as described above, 50 μm or more. Coarse trash is filtered.

The filtrate discharged from the No. 1 microfilter (2) enters the No. 2 microfilter (3), where contaminants of 5 μm or more are filtered. The filtrate from the No. 2 microfilter (3) enters the silver ion activated carbon storage tower (4), where the dissolved carbon of 5 μm or less that has passed through the No. 2 microfilter (3) is adsorbed on the activated carbon. At the same time, the bacteria in the filtrate are sterilized or sterilized with silver ions.
The filtrate from the silver ion activated carbon storage tower (4) is piped (P5), (P7).
It enters into the hollow fiber type ultrafiltration membrane storage tower (5) through which the fine dust and bacteria of 0.01 μm or more are filtered and flows out to the pipe (P11). The filtrate discharged to the pipe (P11) subsequently enters the ultraviolet sterilization tower (6) through the pipe (P12), is sterilized or sterilized there, and enters the purified water supply channel (23) to be supplied with water.

When the water supply is completed, the foot switch (11) is released or the power switch (10) is turned off. As a result, the water supply side electromagnetic on-off valves (15c) (15b) (21) are closed, and at the same time, the ultraviolet lamp and the pump are stopped and the water supply is stopped. The foot switch (11) is used for short-time water supply such as pouring water into the cup, and the power switch (10) is used for long time water supply such as water supply to a pot. This water side opening / closing valve
Since (21) is installed at the outlet of the pipe (23), bacteria that came up from the outlet of the pipe (23) while the water supply was stopped are blocked by the water supply side opening / closing valve (21). There is no entry inside. For safety, the solenoid valve on the water supply side (21)
A silver germicide container (20) is installed in the vicinity of. In this way, various bacteria are prevented from entering the inside of the device, but since there is a possibility of being infected by various bacteria from the outlet of the pipe (23) to the water supply side opening / closing valve (21), the first running water should be removed at the beginning of use. Will be released.

If the water supply is continued in this way, the hollow fiber type ultrafiltration membrane will be clogged at the earliest, and the water purification capacity of the hollow fiber type ultrafiltration membrane storage tower (5) will decline. In such a case, backwashing operation is performed to wash the hollow fiber type ultrafiltration membrane storage tower (5). That is, when the operation changeover switch (7) is turned on to the backwash side, the on-off valves (15c) and (15b) are closed, and the on-off valve (1
5a) and (15d) are opened. When water is passed in this state, the filtrate exiting the silver ion activated carbon storage tower (4) flows to pipes (P6) and (P11), and the hollow fiber type ultrafiltration membrane storage tower (5) is fed from the upper end of the hollow fiber type It flows into the inside of the outer filtration membrane storage tower (5) and flows through the hollow fiber type ultrapermeable membrane from the opposite direction to wash away fine dust attached to the hollow fiber type ultrapermeable membrane.

The washing water flowing from the hollow fiber type ultrapermeable membrane in the opposite direction passes through the pipes (P7) and (P8) to reach the pipe (P10) and is discharged to the outside. This enables the hollow fiber type ultrafiltration membrane storage tower
The hollow fiber type ultrafiltration membrane in (5) is washed and the membrane filtration capacity is restored. In this way, purified water equivalent to tap water can be obtained in remote areas, and the living environment in remote areas can be improved.

EFFECTS OF THE INVENTION According to the present invention, by the function of the water purification on-off valve installed on the outlet side of the water supply passage, it is possible to prevent the germs from going up into the device, and the inside of the device is kept in a clean state for a long period of time. Can be kept at In addition, since the water purification action is performed in many steps from coarse to extremely fine, the finest hollow fiber type ultrafiltration membrane is not burdened and the water purification can be continued for a long time. Furthermore, since bacteria in purified water are sterilized or sterilized by ultraviolet rays at the final stage, no special disinfectant is required, and all the components of this device are electrically operated. It can be operated and maintenance is very easy.

[Brief description of drawings]

FIG. 1 is a partially omitted front view of the present invention.

FIG. 2 is an internal structural diagram of the front side of the present invention.

FIG. 3 is an internal structural diagram of the back side of the present invention.

FIG. 4 is a flowchart of the present invention.

[Explanation of symbols]

 (1)… Pump (2)… No.1 microfilter (3)… No.2 microfilter (4)… Silicon ion activated carbon storage tower (5)… Hollow fiber type ultrafiltration membrane storage tower (6) … Ultraviolet germicidal tower

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location C02F 1/50 531 E 540 F 550 B 560 E C B Z 9/00 502 GH N (72) Inventor Hiroshi Okamoto, 3-1-1, Fukusaki, Minato-ku, Osaka, Kansai Tech Co., Ltd.

Claims (4)

[Claims] 1. A filter part for filtering raw water containing impurities and various bacteria, and a solenoid valve for water supply which is arranged at the outlet of a water supply passage for filtered purified water and closes the water supply passage when water supply is stopped. A water purification device that has been characterized. 2. The filtration unit is No. 1 microfilter and No. 2
The water purifier according to claim 1, comprising a microfilter, a silver ion activated carbon storage tower, and a hollow fiber type ultrafiltration membrane storage tower. 3. The water purification apparatus according to claim 1, wherein an ultraviolet sterilization tower for sterilizing the filtered purified water is installed in the water supply channel. 4. A backwash water passage for passing the microfiltrate in a direction opposite to the water passage direction during purification in the hollow fiber type ultrafiltration membrane storage tower by an operation changeover switch. The water purifier according to claim 1.