JP3902386B2 - Water treatment equipment - Google Patents

Description

[0001]
[Industrial application fields]
This invention sterilizes treated water stored in various aquariums, from large aquariums such as pools and bath tubs to small aquariums such as water tanks placed on the rooftops of buildings and general household bathtubs. The present invention relates to a novel water treatment apparatus that can be used.
[0002]
[Prior art]
For example, pools installed indoors and outdoors, or bath tubs at inns and public baths are regularly used to maintain the water quality, so-called (salach powder, high-quality salash powder) or sodium hypochlorite (NaCIO). It is necessary to sterilize by adding an aqueous solution.
However, in the past, this work was done manually by employees at pools and baths, and the aqueous solution of chalk and sodium hypochlorite was irritating. There was a problem that a great deal of labor was required to carry out the process, for example, the work had to be performed with great care.
[0003]
In addition, since calcite is a solid powder, it takes time to dissolve and become uniform after the addition, and there is also a problem that the pool and bath cannot be used during that time. In addition, in the case of a water tank placed on the rooftop of a building or a bathtub for general households, the current situation depends on only the sterilizing power of chlorine ions contained in tap water, especially in the case of a water tank. One of the social problems is that the water quality deteriorates due to the growth of algae inside.
[0004]
Also, in the case of a general household bathtub, it seems that there is usually no problem in terms of water quality because the water is changed almost every 1 to 2 days, but the inside of the boiler connected to the bathtub is frequently cleaned Because it is not possible, it is easy for bacteria and fungi to propagate, and there is a concern that water quality will deteriorate.
[0005]
The objective of this invention is providing the novel water treatment apparatus which can sterilize the to-be-processed water stored in the above various water tanks simply and efficiently.
[0006]
[Problems to be solved by the invention]
Accordingly, the applicant of the present application has invented a water treatment apparatus that guides the water to be treated stored in each water tank as described above to the electrolytic tank and sterilizes it by an electrochemical reaction.
In the water treatment apparatus of the present invention, water to be treated is supplied to an electrolytic cell having electrodes, and an electrochemical reaction (so-called electrolysis) is performed on the water to be treated. Due to the applied electrochemical reaction, hypochlorite ions, chlorine gas, HCIO, and the like are generated and dissolved in the water to be treated, so that the water to be treated is sterilized.
[0007]
In such a water treatment apparatus that uses an electrolytic cell and sterilizes by an electrochemical reaction, the water level in the electrolytic cell is controlled using a float switch or the like in order to control the level of water to be treated in the electrolytic cell within a certain range. Detecting and adjusting the amount of water to be treated to the electrolytic cell.
[0008]
However, if the float switch fails or the control device malfunctions, the water level in the electrolytic cell cannot be controlled within a certain range, and there is a problem that the water to be treated overflows from the electrolytic cell.
[0009]
If the water to be treated leaks, there is a risk of short circuit or electric leakage. In particular, since the water to be treated contains a high concentration of chlorine-containing compounds, there is a concern about the problem of corrosion, and it is necessary to provide a water treatment apparatus that can solve such problems.
An object of the present invention is to solve the above-described problems and to provide a novel water treatment apparatus that can sterilize safely and satisfactorily.
[0010]
[Means for Solving the Problems and Effects of the Invention]
The invention described in claim 1 includes a water tank for storing the water to be treated, an electrolytic tank for sterilizing the water to be treated introduced from the water tank by an electrochemical reaction, and introducing the water to be treated from the water tank to the electrolytic tank. And a water treatment apparatus having a water treatment path for refluxing to the water tank after sterilization, the electrolysis tank is a drain that discharges excess treated water to the outside when the water level in the electrolysis tank exceeds a predetermined water level. The drainage route has a reverse opening with one end opened in the water to be treated in the electrolytic cell so that only excess water exceeding the predetermined water level flows out and gas in the upper part of the electrolytic cell does not leak. The water treatment apparatus is characterized in that it is bent in a U shape and the top of the inverted U portion is positioned above the upper end opening of the electrolytic cell so that overflow water does not cause siphon action.
[0011]
The invention of claim 2 includes a water tank for storing the water to be treated, an electrolytic tank for sterilizing the water to be treated introduced from the water tank by an electrochemical reaction, the water to be treated is introduced from the water tank to the electrolytic tank, and In the water treatment apparatus provided with a water treatment path for returning to the water tank after sterilization, the electrolysis tank has a drain path for discharging excess treated water to the outside when the water level in the electrolysis tank exceeds a predetermined water level. The drainage path has an inverted U shape with one end opened in the water to be treated in the electrolytic cell so that only excess water exceeding the predetermined water level flows out and gas in the upper part of the electrolytic cell does not leak. A overflow detecting means that is bent in the mold and detects the presence or absence of overflowed treated water through the drainage path, and performs a notification operation when an overflow of treated water is detected based on a signal from the overflow detecting means. Water treatment characterized by Device.
[0015]
According to the configuration of claim 1, even when the water level of the water to be treated in the electrolytic cell cannot be maintained at the predetermined water level due to a failure of the float switch, the water to be treated exceeding the predetermined water level is caused to overflow into the drainage path. , Will be sent to the drain port. Accordingly, it is possible to minimize the risk of short circuit or leakage due to overflowing water to be treated.
[0016]
Since the drainage path is bent in an inverted U shape and one end is opened in the treated water of the electrolytic cell, the drainage path is always closed with the treated water. Gas does not leak into the drainage channel. Thereby, there is no possibility that gas will undesirably flow into the drain port through the drainage path, and the safety can be further improved.
[0017]
By making the top of the inverted U-shaped part of the drainage channel located above the upper end opening of the electrolytic cell, the overflow water does not cause siphoning. Therefore, only surplus water exceeding a predetermined water level can be drained, and an unnecessarily large amount of water to be treated can be prevented from being discharged due to siphon action.
[0019]
Moreover, according to the structure of Claim 2, when a to-be-processed water overflows through a drainage channel | path, it will alert | report by a buzzer etc. By confirming the notification operation, the user will be aware of the water level control failure of the electrolyzer, and will be able to quickly take appropriate measures such as stopping the equipment or repairing the failed part quickly. Damage due to water level control failure can be minimized.
[0020]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be specifically described below with reference to the drawings. FIG. 1 is a diagram schematically showing a structure in which a water treatment apparatus 1 according to an embodiment of the present invention is incorporated in a large water tank 2 such as a pool or a bath tub.
[0021]
As shown in the figure, in the water tank 2, a filter 21 for sand filtration is incorporated, and a large amount of water W to be treated is constantly circulated in a direction indicated by a double solid line arrow in the figure by a circulation pump 22. A main circulation path 20 is installed, and the water treatment path 10 of the water treatment apparatus 1 branches from a branch point J1 downstream of the filter 21 in the main circulation path 20 as shown by the solid line arrow in the figure. Then, after passing through a gas-liquid separation tank 13 that also serves as an electrolytic cell, which incorporates an electrode set 11 composed of a plurality of electrode plates 110 and a filter 12 for removing fine bubbles, it joins downstream from the branch point J1. The point J2 is connected so as to join the main circulation path 20 again.
In the middle of the water treatment path 10 from the branch point J1 to the gas-liquid separation tank 13, the on-off valve B1, the regulating valve B2 for adjusting the flow rate, the flow meter S1, the electromagnetic valve B3, and the water to be treated are filtered. Thus, a filter 14 for removing organic substances is disposed.
[0022]
Further, a pressure gauge S3 for measuring the water pressure of the water to be treated is connected between the electromagnetic valve B3 and the filter 14.
[0023]
The pressure gauge S3 and the flow meter S1 mainly stop or decrease the supply of water to be treated from the main circulation path 20 to the water treatment path 10 for some reason, It is provided to prevent damage to these members by stopping the operation by stopping energization of the electrode assembly 11 and a delivery pump P1 described later when the water level drops below a predetermined amount. ing.
[0024]
The water to be treated W is circulated in the water treatment path 10 by sending the water to be treated from the gas-liquid separation tank 13 in order on the way from the gas-liquid separation tank 13 to the junction J2 in the water treatment path 10. A pump P1 for delivery, a flow meter S4, a check valve B7 for preventing backflow, adjustment valves B8 and B9 for adjusting the flow rate, and an on-off valve B10, and a flow meter S4 A pressure gauge S5 for measuring the water pressure of the water to be treated is connected between the check valve B7.
[0025]
The pressure gauge S5 and the flow meter S4 mainly stop or decrease the reflux of the water to be treated from the water treatment path 10 to the main circulation path 20 for some reason. When the water level rises above a predetermined amount, the on-off valves B1 and B10 are closed to prevent the water from overflowing from the air inlet 131a of the gas-liquid separation tank 13 and the water treatment path 10 is connected to the main circulation path 20. It is provided to shield from.
[0026]
As shown in FIG. 2, the gas-liquid separation tank 13 has a box-shaped tank main body 130 that forms the main body, and an upper opening 130 c of the tank main body 130 so as to constitute an upper surface portion of the gas-liquid separation tank 13. The tank body 130 is partitioned into two gas-liquid separation regions 130a and 130b by the fine bubble removing filter 12 described above.
[0027]
Of the two gas-liquid separation regions 130a and 130b, the electrode set 11 composed of the plurality of electrode plates described above is disposed in the gas-liquid separation region 130a on the most upstream side, and the gas-liquid separation tank 13 is It is also used as an electrolytic cell for electrochemical reactions.
Further, at the bottom of the gas-liquid separation region 130b on the most downstream side, an outlet 130d for water to be treated is formed. On the pipe 101 that forms the latter half of the water treatment path 10 from the outlet 130d, The aforementioned delivery pump P1 is arranged.
[0028]
On the other hand, in the gas-liquid separation tank 13, there is a gap between the large lid 131 and the upper side of the filter 12 above the water surface of the water W to be treated in the gas-liquid separation regions 130 a and 130 b. As a result, a gas flow passage 13a is formed in the gas-liquid separation tank 13 over the gas-liquid separation regions 130a and 130b as indicated by the dashed-dotted arrows in the figure.
[0029]
Further, in the large lid 131, the water level becomes the lowest as shown in the figure due to the influence of the resistance of the filter 12 to the water flow, and thereby the most downstream gas-liquid separation region 130b having sufficient space on the water surface. An exhaust pipe F2 having a suction-type blower F1 arranged in the middle for forcibly discharging the gas originating from the fine bubbles separated from the treated water W by the filter 12 to the outside of the tank is located immediately above On the other hand, in the position directly above the gas-liquid separation region 130a on the most upstream side, air introduction for introducing air into the tank instead of the gas discharged outside the tank by the blower F1. A mouth 131a is formed, and a pipe 100 that forms the first half of the water treatment path 10 is connected.
[0030]
In addition, a small lid 132 holding the filter 12 is disposed on the large lid 131 so as to be separable from the large lid. The small lid 132 is used when the filter 12 is maintained. A seal member (not shown) is provided between the small lid body 132 and the large lid body, and is sealed so that water to be treated and gas do not leak from the gap.
[0031]
Further, a float switch SW as a water level control means for controlling the water level in the gas-liquid separation region 130a to a certain range is provided at a substantially central position of the large lid 131, and the water level detection unit SW1 is connected to the gas-liquid separation region 130a. It is arranged to be inserted into.
[0032]
The float switch SW detects the water level of the water W to be treated in the gas-liquid separation region 130a on the most upstream side detected by the water level detection unit SW1, and opens and closes the on-off valve B1 and adjusts the flow rate by the adjusting valve B2. By adjusting the amount of water to be treated, the amount of water to be treated into the tank 13 is adjusted, thereby controlling the water level of the water to be treated W in the region 130a to a predetermined water level.
[0033]
Furthermore, a drain pipe 30 for draining the treated water that has overflowed is connected to the uppermost side wall of the gas-liquid separation tank.
The drainage pipe 30 is bent in an inverted U shape when viewed from the side, one end 30a is connected to a drain port (not shown), and the other end 30b is a side wall of the gas-liquid separation tank. It is connected to a position where it is submerged in water. Since the other end 30b is always submerged in the water to be treated, gas or the like originating from fine bubbles, which is separated from the water to be treated W and drifts in the tank upper space, is prevented from entering the drain pipe 30. Yes.
[0034]
In addition, the drain pipe 30 has a lower top portion (A in FIG. 2) on the inner surface of the inverted U-shaped portion located slightly above the water surface at a predetermined water level controlled by the float switch SW, and the gas-liquid separation tank 13. It is arrange | positioned so that it may be located below upper end opening 130c. The amount of water to be treated flowing into the gas-liquid separation tank 13 cannot be adjusted due to malfunction of the float switch SW, the on-off valve B1 or the regulating valve B2, a malfunction of the control device, etc., and the water to be treated in the gas-liquid separation tank 13 When the water level of W becomes uncontrollable to a predetermined water level, the water to be treated flowing in excess of the predetermined water level overflows into the drain pipe 30 before overflowing from the upper end opening 130c of the gas-liquid separation tank 13, and a drain (not shown) It will be discharged into the mouth.
[0035]
Since the upper top portion (B in FIG. 2) on the inner surface of the inverted U-shaped portion of the drain pipe 30 is disposed above the upper end opening 130c of the gas-liquid separation tank 130, the overflow water causes siphon action. Absent. Thereby, only the surplus water exceeding the predetermined water level can be drained, and an unnecessarily large amount of treated water can be prevented from being discharged by the siphon action.
[0036]
Even if the cross-sectional area of the drain pipe 30 is increased so that the drainage amount of the overflow water that can be treated by the drain pipe 30 is larger than the maximum inflow quantity of the water to be treated that flows into the gas-liquid separation tank 13 from the pipe 100, the siphon The action can be prevented.
[0037]
Further, in the vicinity of one end 30a of the drain pipe 30, an overflow detection means 39 for detecting that the water to be treated has overflowed into the drain pipe is provided. As shown in FIG. 3, the overflow detection means 39 includes, for example, a micro switch 36 and a water receiving plate 37 inserted into the drain pipe 30, and when the water to be treated overflowed into the drain pipe 30, When the water receiving plate is pushed down by the inflow pressure of the water to be treated, the micro switch 36 is turned on and the overflow is detected. Reference numeral 38 denotes a sealing material that closes a gap between the water receiving plate 37 and the drain pipe.
[0038]
When the overflow detection means 39 detects the overflow of the water to be treated, a buzzer or a display unit (not shown) is energized to notify the user.
The fact that the water to be treated overflowed into the drain pipe 30 due to water level control failure could not be easily detected from the outside, but in this application, if the water to be treated overflows, Be notified. By confirming the notification operation, the user becomes aware of the failure of the water level control of the gas-liquid separation tank 13, and can quickly take appropriate measures such as stopping the device or repairing the failed part quickly. In the unlikely event of damage to the water level control, damage can be minimized.
[0039]
In addition, although not shown in figure, you may arrange | position the receiving tray of the to-be-processed water which leaked under the said gas-liquid separation tank 13. FIG. Even if a water leak occurs in the gas-liquid separation tank 13, the risk of a short circuit or leakage due to leaked water to be treated can be minimized.
[0040]
As the electrode plate 110 constituting the electrode set 11, for example, a noble metal such as gold (Au), platinum (Pt), palladium (Pd), platinum-iridium (Pt-Ir) is formed on the entire surface of a titanium (Ti) substrate. The thin film coated with a plating method or a baking process is used.
[0041]
As the filter 12 for removing fine bubbles and the filter 14 for removing organic substances, a nonwoven fabric made of natural or chemical fibers is used.
In particular, as the filter 12 for removing fine bubbles, since the filter 12 is disposed immediately after the electrochemical reaction by the electrode set 11, a chlorine-containing compound, active oxygen, or the like generated by the electrochemical reaction, such as polypropylene fiber. In order to prevent the fine bubbles from being easily permeated, a fine nonwoven fabric is preferably used.
[0042]
In order to sterilize the water to be treated W in the water tank 2 using the water treatment apparatus 1 having the above-described parts, the circulation pump 23 is first operated as usual, and the inside of the main circulation path 20 is shown in FIG. While the large amount of water W to be treated is constantly circulated as indicated by the heavy solid arrows, the delivery pump P1 is operated and the on-off valves B1 and B10 are opened.
If it does so, a part of to-be-processed water W circulating in the main circulation path | route 20 will mainly be the water treatment path | route 10 by the pressure difference of the internal pressure of the main circulation path | route 20, and the gas-liquid separation tank 13 under atmospheric pressure. First, the flow rate is adjusted through the regulating valve B2, then the flow rate is measured by the flow meter S1, the residual chlorine concentration is measured by the residual chlorine sensor (not shown), and the water pressure is measured by the pressure gauge S3. After that, it is sent to the filter 14 to remove organic substances and the like. The adjustment of the flow rate by the adjusting valve B2 is adjusted according to the measured flow rate of the flow meter S1.
[0043]
Next, the water to be treated is sent to the gas-liquid separation area 130a on the uppermost stream side of the gas-liquid separation tank 13, and the measurement result of the residual chlorine concentration measured by a residual chlorine sensor (not shown) in the area 130a. The electrode assembly 11 is energized to sterilize by an electrochemical reaction, and then passes through the filter 12 and is sequentially sent to the gas-liquid separation region 130b on the downstream side. Bubbles are removed and the appearance is clean and clear.
[0044]
In addition, the gas originating from the fine bubbles removed from the water to be treated at this time rides on the flow of air flowing from the air inlet 131a to the inlet 131b generated by operating the blower F1, and the gas-liquid separation tank 13 and is discharged to the outside or the exhaust port (not shown) as shown by the black arrow in the figure through the exhaust pipe F2.
[0045]
On the other hand, the water to be treated from which sterilization has been completed and fine bubbles have been removed is transferred from the most downstream gas-liquid separation region 130d to the bottom through the outlet 130d provided at the bottom by the action of the delivery pump P1. It is sent out and returned to the main circulation path 20 at the junction J2 through the flow meter S4, the check valve B7, the regulating valves B8, B9, and the on-off valve B10, and is returned to the water tank 2.
[0046]
As shown in FIG. 4, the water treatment apparatus 1 having the above-described parts is actually a power supply device 31, a control device (sequencer) 32, a gas-liquid separation tank 13, a breaker 33, etc. Are placed in a cabinet 34 of an appropriate size, and members that require regular or irregular maintenance, such as pumps, filters, pressure gauges, etc., out of the above-mentioned parts are placed outside the cabinet 34. It is installed in equipment such as a pool in a unitized state.
[0047]
The cabinet 34 is formed of a box having a maintenance opening on one side surface, and a laterally opening type door 35 is provided in the maintenance opening. At the upper position in the cabinet 34, a control device 32, a breaker 33, a power supply device 31, instruments and operation switches (not shown) are arranged, and at the lower position, the gas-liquid separation tank 13 is provided. The side on which the filter 12 is disposed is disposed on the door 35 side, and the side on which the electrode is disposed is disposed on the back side.
[0048]
In the gas-liquid separation tank 13, the filter 12 is more frequently required for maintenance than the electrode 11. By arranging the filter 12 side in the gas-liquid separation tank 13 on the door 35 side of the cabinet 24, maintenance is performed. Workability can be improved.
The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims.
[Brief description of the drawings]
FIG. 1 is a simplified diagram showing a water treatment apparatus according to an embodiment of the present invention.
FIG. 2 is a schematic sectional view of a gas-liquid separation tank, which is a main part of the water treatment apparatus.
FIG. 3 is a partial cross-sectional view showing the structure of overflow detection means.
FIG. 4 is a schematic cross-sectional view in which each part of the present invention is arranged in a cabinet.
[Explanation of symbols]
1 Water treatment device 13 Electrolysis tank (gas-liquid separation tank)
30 Drainage path SW Water level control means

Claims (2)

A water tank for storing the water to be treated, an electrolytic tank for sterilizing the water to be treated introduced from the water tank by an electrochemical reaction, and introducing the water to be treated from the water tank to the electrolytic tank and returning to the water tank after the sterilization treatment In a water treatment apparatus comprising a water treatment path,
The electrolyzer has a drainage path for discharging excess treated water to the outside when the water level in the electrolyzer exceeds a predetermined water level, and the drainage path has only surplus water exceeding the predetermined water level. flows, so that the gas of the electrolytic tank top is not leaked, is bent in an inverted U-shape in which one end is opened in the water to be treated in the electrolytic cell, the inverted U as overflow water does not cause siphoning A water treatment apparatus , wherein a top portion of the character portion is positioned above an upper end opening of the electrolytic cell . A water tank for storing the water to be treated, an electrolytic tank for sterilizing the water to be treated introduced from the water tank by an electrochemical reaction, and introducing the water to be treated from the water tank to the electrolytic tank and returning to the water tank after the sterilization treatment In a water treatment apparatus comprising a water treatment path,
The electrolyzer has a drainage path for discharging excess treated water to the outside when the water level in the electrolyzer exceeds a predetermined water level, and the drainage path has only surplus water exceeding the predetermined water level. One end is bent and formed into an inverted U shape that opens in the water to be treated in the electrolytic cell so that the gas in the upper part of the electrolytic cell does not leak out.
Overflow detection means for detecting the presence or absence of overflowed treated water through the drainage path,
A water treatment apparatus that performs a notification operation when an overflow of water to be treated is detected based on a signal from an overflow detection means.

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