CN112672979A - Water softener - Google Patents
Water softener Download PDFInfo
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- CN112672979A CN112672979A CN201980057724.0A CN201980057724A CN112672979A CN 112672979 A CN112672979 A CN 112672979A CN 201980057724 A CN201980057724 A CN 201980057724A CN 112672979 A CN112672979 A CN 112672979A
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- water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
- B01J49/05—Regeneration or reactivation of ion-exchangers; Apparatus therefor of fixed beds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
- B01J49/50—Regeneration or reactivation of ion-exchangers; Apparatus therefor characterised by the regeneration reagents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
- B01J49/75—Regeneration or reactivation of ion-exchangers; Apparatus therefor of water softeners
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J49/00—Regeneration or reactivation of ion-exchangers; Apparatus therefor
- B01J49/80—Automatic regeneration
- B01J49/85—Controlling or regulating devices therefor
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
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- Chemical Kinetics & Catalysis (AREA)
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
软水器(1)，其是使被处理水向离子交换树脂(9)通水而进行软水化处理的软水器，该软水器具备：填充有离子交换树脂(9)的离子交换树脂填充槽(2)；用于贮存用于对离子交换树脂(9)进行再生的盐水(14)的盐水罐(4)；以及控制部(13)，该控制部(13)对使被处理水向离子交换树脂填充槽(2)内的离子交换树脂(9)通水而进行软水化的软水化运转、对离子交换树脂填充槽(2)的内部进行清洗的清洗运转、使盐水罐(4)内的盐水(14)向离子交换树脂填充槽(2)内的离子交换树脂(9)通水而对离子交换树脂(9)进行再生的再生运转、以及向盐水罐(4)的内部供给水的给水运转。
A water softener (1) is a water softener that softens water by passing water through an ion exchange resin (9). The water softener includes: an ion exchange resin filling tank (2) filled with ion exchange resin (9); a brine tank (4) for storing brine (14) for regenerating the ion exchange resin (9); and a control unit (13) that performs water softening operation by passing water through the ion exchange resin (9) in the ion exchange resin filling tank (2), cleaning operation by cleaning the inside of the ion exchange resin filling tank (2), regeneration operation by passing brine (14) from the brine tank (4) through the ion exchange resin (9) in the ion exchange resin filling tank (2) to regenerate the ion exchange resin (9), and water supply operation by supplying water to the inside of the brine tank (4).
Description
Technical Field
The utility model relates to a water softener which leads the water to be treated to be led to an ion exchange resin filling groove filled with ion exchange resin for carrying out the water softening treatment.
Background
As means for preventing the inflow of unnecessary water such as the backflow of a chemical solution tank after the recovery from a power failure, a water softener using an ion exchange resin is configured such that: before starting the position initialization process of the flow path control valve, it is determined whether or not the chemical liquid valve is not closed, and when the chemical liquid valve is in the open state, the control is performed such that the position initialization process of the chemical liquid valve is started and then the chemical liquid valve is closed, and when the chemical liquid valve is in the closed state, the position initialization process of the bypass valve, the water inlet valve, and the water collection valve is performed before the position initialization process of the chemical liquid valve (see patent document 1). In the water softener of patent document 1, although the reverse flow of the chemical liquid valve can be prevented, there is a problem that the chemical liquid is discharged when the water is passed in a state where the chemical liquid remains in the ion exchange resin-filled tank. Further, when a chemical solution is used, there is a problem that the amount of the chemical solution required for the regeneration treatment is insufficient and the regeneration of the ion exchange resin is insufficient.
On the other hand, in the water softener using the ion exchange resin, if the water to be treated stored in the ion exchange resin-filled tank continues for a long time without passing water, organic substances and the like are eluted from the ion exchange resin into the water to be treated in the ion exchange resin-filled tank, and the water to be treated is stained by these organic substances. Therefore, a water softener has been proposed which automatically performs a cleaning operation in an ion exchange resin-filled tank when a state in which water is not supplied to the ion exchange resin-filled tank (hereinafter referred to as a non-water-supply state) continues for a certain period of time (see patent document 2).
Documents of the prior art
Patent document
Patent document 1: japanese patent application laid-open No. 2010-247103
Patent document 2: japanese laid-open patent application No. 2001-246376
SUMMERY OF THE UTILITY MODEL
Problem to be solved by utility model
However, in the water softener proposed in patent document 2, since the washing operation is performed after a certain time period from the non-water-flowing state, the period for starting the washing operation differs every time according to the timing at which the non-water-flowing state is started. For example, the cleaning operation may be started in the evening with a high water flow frequency. When water is passed through the cleaning operation, the water to be treated entering from the raw water inlet pipe flows out to the soft water outlet pipe as it is.
Means for solving the problems
(1) In order to solve the above problems, according to one aspect of the present invention, there is provided a water softener for performing a softening treatment by passing water to be treated to an ion exchange resin, the water softener including:
an ion exchange resin-filled tank filled with an ion exchange resin;
a brine tank for storing brine for regenerating the ion exchange resin; and
a control unit for switching between a softening operation for softening the water to be treated by passing the water through the ion exchange resin in the ion exchange resin filling tank, a cleaning operation for cleaning the inside of the ion exchange resin filling tank, a regeneration operation for regenerating the ion exchange resin by passing the brine in the brine tank through the ion exchange resin in the ion exchange resin filling tank, and a water supply operation for supplying water to the inside of the brine tank,
the control unit controls the cleaning operation to be performed at a predetermined timing.
(2) In the water softener according to an embodiment of the present invention, the predetermined time is preferably from 0 a.m. to 6 a.m.
(3) In the water softener according to an embodiment of the present invention, the predetermined time is preferably the same time every day.
(4) The water softener according to an embodiment of the present invention is a water softener for performing a softening treatment by passing water to be treated to an ion exchange resin, the water softener including:
an ion exchange resin-filled tank filled with an ion exchange resin;
a brine tank for storing brine for regenerating the ion exchange resin; and
a control unit for switching between a softening operation for softening the water to be treated by passing the water through the ion exchange resin in the ion exchange resin filling tank, a cleaning operation for cleaning the inside of the ion exchange resin filling tank, a regeneration operation for regenerating the ion exchange resin by passing the brine in the brine tank through the ion exchange resin in the ion exchange resin filling tank, and a water supply operation for supplying water to the inside of the brine tank,
the control unit controls the cleaning operation and the water supply operation to be performed immediately after power is supplied to the control unit.
Effect of the utility model
The water softener of the utility model can be set to carry out the cleaning operation in the ion exchange resin filling tank at the specified time every day. Therefore, when water is passed through the water supply pipe during the cleaning operation, the water to be treated flowing in from the raw water inlet pipe flows out to the soft water outlet pipe, but such a problem can be prevented by setting the predetermined timing to a period in which water is not passed through.
Drawings
Fig. 1 is a schematic configuration diagram showing an embodiment of a water softener according to the present invention.
Fig. 2 is a schematic view illustrating water flows during a softening operation in the water softener of fig. 1.
Fig. 3 is a schematic view illustrating water flow during a backwashing operation in the water softener of fig. 1.
Fig. 4 is a schematic view illustrating water flow during a regeneration operation in the water softener of fig. 1.
Fig. 5 is a schematic view illustrating water flow during a washing operation in the water softener of fig. 1.
Fig. 6 is a schematic view illustrating a water flow during a water supply operation in the water softener of fig. 1.
Fig. 7 is a flowchart showing the timing of execution of the wash feedwater operation, the wash regeneration feedwater operation, and the wash operation in embodiment 1.
Fig. 8 is a flowchart showing the timing of execution of the wash feedwater operation, the wash regeneration feedwater operation, and the wash operation in reference embodiment 1.
Fig. 9 is a flowchart showing the timing of execution of the purge regeneration feedwater operation and the purge operation in embodiment 2.
Description of the reference numerals
1 Water softener
2 ion exchange resin-filled tank
3 control valve
4-salt water tank
5 raw water inlet pipe
6 soft water outlet pipe
7 Drain outlet pipe
8 water collecting pipe
9 ion exchange resin
10 Upper Filter
11 lower filter
12 saline pipe
13 control part
14 salt water
Detailed Description
[ Structure of Water softener ]
An embodiment of the water softener of the present invention will be described with reference to the accompanying drawings. Refer to fig. 1. The water softener 1 includes an ion exchange resin filling tank 2 in which an ion exchange resin 9 is stored, a control valve 3 for switching a water passage direction of raw water or the like on an upper surface of the ion exchange resin filling tank 2, a control unit 13 for controlling the control valve 3, and a brine tank 4 for storing brine 14 for regenerating the ion exchange resin. A raw water inlet pipe 5 for supplying raw water, a soft water outlet pipe 6 for supplying soft water, and a drain outlet pipe 7 are connected to the control valve 3. The brine tank 4 and the ion exchange resin filling tank 2 are connected through a brine pipe 12 via a control valve 3.
The ion exchange resin filling tank 2 is a bottomed cylindrical container filled with a predetermined amount of ion exchange resin 9. Raw water supplied from the raw water inlet pipe 5 is treated water, and flows into the ion exchange resin-filled tank 2 through the control valve 3 and the upper filter 10. Then, the water to be treated is softened by passing through the ion exchange resin-filled tank 2 to become soft water. Soft water enters the water collecting pipe 8 from the lower filter 11, passes through the water pipe 8, and flows out from the soft water outlet pipe 6 via the control valve 3.
The upper filter 10 has a filtering function of passing the water to be treated without leaking through the ion exchange resin 9. Therefore, the size of the opening formed in the upper filter 10 is smaller than the particle size of the ion exchange resin 9. In order to reduce the pressure loss due to the water passage, the opening ratio of the upper filter 10 is preferably as large as possible within the allowable range of strength. Similarly, the lower filter 11 also has a filtering function of passing the water to be treated without leaking through the ion exchange resin 9. Therefore, the size of the opening formed in the lower filter 11 is also smaller than the particle size of the ion exchange resin 9. In order to reduce the pressure loss due to the water passage, the opening ratio of the lower filter 11 is preferably as large as possible within the allowable range of strength.
The control unit 13 is constituted by a control board provided with a microcomputer for controlling each part of the water softener. The control unit 13 includes a timer a as a timing means for determining whether or not to start the regeneration operation and the cleaning operation of the ion exchange resin 9, which will be described later, a counter for counting the cumulative flow amount of water to the ion exchange resin filling tank 2, and a counter for counting the total flow amount of water to the ion exchange resin filling tank 2.
[ operation of Water softener ]
Next, the operation of the water softener 1 configured as above will be described. The water softener 1 performs various operations such as a backwashing operation, a regeneration operation, a forward cleaning operation, and a water supply operation, in addition to a softening operation for supplying soft water. The regeneration operation and the backwashing operation of the ion exchange resin 9 are automatically performed at appropriate times under the control of the control unit 13 provided in the water softener 1. In the present application, the reverse cleaning operation and the forward cleaning operation are collectively referred to as a cleaning operation.
[ softening operation ]
The water softening operation will be described with reference to fig. 2. The water softening operation is a step of softening raw water as water to be treated. The water to be treated supplied from the raw water inlet pipe 5 is caused to flow into the upper filter 10 via the control valve 3, and flows downward from the upper filter 10 in the ion exchange resin-filled tank 2. The water to be treated, which is hard water, is made soft by the action of the ion exchange resin 9. Then, the soft water is made to flow into the lower filter 11, passes through the water collecting pipe 8, and flows out to the soft water outlet pipe 6 via the control valve 3.
[ Back washing operation ]
The reverse cleaning operation will be described with reference to fig. 3. The backwashing operation is a step of discharging foreign matters attached to the ion exchange resin 9 by passing water to the ion exchange resin filling tank 2 in the reverse direction to the softening operation. The flow path in the control valve 3 is switched by the control unit 13, and raw water from the raw water inlet pipe 5 flows into the lower filter 11 through the control valve 3 via the water collection pipe 8. Next, the raw water is made to flow from the lower side toward the upper side inside the ion exchange resin filled tank 2 and flow into the upper filter 10. Finally, the raw water containing the foreign matter is discharged from the drain outlet pipe 7 via the control valve 3.
[ regenerative operation ]
The regeneration operation will be described with reference to fig. 4. The regeneration operation is a step of performing a regeneration treatment of the ion exchange resin 9 by flowing brine to the ion exchange resin 9 in the ion exchange resin-filled tank 2. The flow path in the control valve 3 is switched by the control unit 13, and the brine 14 in the brine tank 4 flows into the upper filter 10 through the brine pipe 12 and the control valve 3. Then, the brine is caused to flow from the upper filter 10 toward the inside of the ion exchange resin packed tank 2, thereby regenerating the ion exchange resin 9. Brine used for the regeneration treatment of the ion exchange resin 9 is made to flow into the lower filter 11 and is discharged from the drain outlet pipe 7 via the control valve 3 via the water collection pipe 8.
[ Positive cleaning operation ]
The positive cleaning operation will be described with reference to fig. 5. The positive cleaning operation is a step of performing water passage in the same direction as the water softening operation to the ion exchange resin packed tank 2, cleaning and discharging the brine and the like remaining in the piping. The flow path in the control valve 3 is switched by the control unit 13, and raw water from the raw water inlet pipe 5 flows into the upper filter 10 through the control valve 3. Next, the raw water is caused to flow downward from the upper filter 10 in the ion exchange resin packed tank 2, flows into the lower filter 11, passes through the water collection pipe 8, and is discharged from the drain outlet pipe 7 via the control valve 3.
[ Water supply operation ]
The water supply operation will be described with reference to fig. 6. The feedwater operation is a step for generating brine 14 before the regeneration operation of the ion exchange resin 9. The flow path in the control valve 3 is switched by the control unit 13, and raw water from the raw water inlet pipe 5 is supplied to the brine tank 4 at a predetermined amount through the control valve 3 via the brine pipe 12.
Examples
The sequence of actually operating the water softener of the present invention will be described. The following description shows preferred embodiments of the present invention, but the present invention is not limited to these cases, and may be implemented in other embodiments within the scope of the present invention.
< embodiment 1 >
Fig. 7 is a flowchart showing the timing of execution of various operations of the water softener 1 in embodiment 1. Immediately after the supply of power to the control unit 13 of the water softener 1, the control valve 3 switches the flow path to sequentially perform the back-washing operation, the front-washing operation, and the water supply operation of the ion exchange resin 9 (step W1). The operation of step W1 is referred to as a wash water supply operation. In the cleaning water supply operation, foreign matters adhering to the ion exchange resin 9 are removed, a required amount of raw water for discharging the brine remaining in the pipe is supplied to the ion exchange resin filling tank 2, and a predetermined amount of raw water is supplied to the brine tank 4.
Therefore, even if a power failure occurs during the water supply operation and the brine tank 4 is left without the brine 14 being supplied, the washing water supply operation is performed immediately after the power supply to the control unit 13 from the power failure, and therefore, it is possible to prevent the brine from being insufficient and insufficient in the regeneration operation to be performed later.
When the washing water supply operation is completed, the control unit 13 starts counting by the timer a that monitors the elapsed time from the completion of the washing water supply operation and counting by the cumulative counter that monitors the cumulative value of the amount of water passing after the completion of the washing water supply operation (step S1).
In the present embodiment, the time when the regeneration operation and the purge operation are started is set as the set time. In the present embodiment, the regeneration operation and the cleaning operation are set to be performed between 0 a.m. and 6 a.m., preferably 3 a.m., with a relatively low frequency of use. The control unit 13 determines whether or not the current time is the set time (step S2). If the current time is the set time (yes in step S2), the process proceeds to step S3. The set time is set to 3 am in fig. 7.
The setting timing of step S2 may be appropriately changed according to the frequency of use of the water softener, and the like. For example, when the usage frequency is high at 3 am, such as during night shifts, the regeneration operation and the cleaning operation may be set to be performed at 3 pm.
The timer a and the cumulative amount counter determine the timing of performing the regeneration operation of the ion exchange resin 9. In the present embodiment, the regeneration operation is performed every 9 days or every 1.9 tons of the cumulative amount of water. The control unit 13 first determines whether or not the count value of the timer a has not expired for 9 days (step S3). If the count value of the timer A is less than 9 days (yes in step S3), it is next determined whether the count value of the cumulative flow rate is less than 1.9 tons (step S4).
The cumulative amount of setting in step S4 can be changed as appropriate depending on the hardness of the water to be treated. For example, since the treated water treatment amount is reduced when the hardness of the treated water is high, the regeneration operation may be performed at short intervals such as 1.5 tons.
When the count of the timer a is 9 days or longer (no in step S3), the control unit 13 switches the flow path of the control valve 3 to perform the regeneration operation of the ion exchange resin 9 (step S6). In the present embodiment, the reverse cleaning operation is performed before the regeneration operation, and the forward cleaning operation and the feedwater operation are performed in this order after the regeneration operation. A series of operations in which the reverse cleaning operation, the regeneration operation, the forward cleaning operation, and the water feed operation are sequentially performed is referred to as a cleaning/regeneration water feed operation. When the washing regeneration water feed operation of the ion exchange resin 9 is completed, the control unit 13 resets the count value of the timer a and the count value of the cumulative counter (step S7). The timer a and the cumulative amount counter start counting again (step S1), and the elapsed time and the cumulative amount of water passing after the regeneration operation of the ion exchange resin 9 are measured.
Further, even if the count of the timer a is less than 9 days (yes in step S3), if the cumulative flow rate is 1.9 tons or more (no in step S4), the control unit 13 performs the cleaning/regeneration feedwater operation of the ion exchange resin 9 by switching the flow path of the control valve 3 in the same manner as described above (step S6).
On the other hand, when the elapsed days is less than 9 days (yes in step S3), the cumulative flow rate of water is less than 1.9 tons (yes in step S4), and water is not being passed through the water softener 1, the water to be treated in the ion exchange resin filling tank 2 is retained in the ion exchange resin filling tank 2. If this state continues for a long time, the water to be treated is stained with organic substances and the like leached from the ion exchange resin 9, and therefore, the inside of the ion exchange resin-filled tank 2 needs to be cleaned. Therefore, in the water softener 1 of the present embodiment, even if the elapsed days is less than 9 days ("yes" in step S3), the cumulative flow rate is less than 1.9 tons ("yes" in step S4), and when the set time is reached, the cleaning operation (the back cleaning operation and the front cleaning operation) in the ion exchange resin filled tank 2 is performed. By performing the cleaning operation for a predetermined time, foreign matters adhering to the ion exchange resin 9 are removed, and further, raw water of an amount necessary for discharging the brine remaining in the pipe is supplied to the ion exchange resin-filled tank 2.
In embodiment 1, even when a power failure occurs during regeneration and brine remains in the ion exchange resin filled tank 2, since the cleaning operation is performed immediately after the power supply to the control unit 13, the brine in the ion exchange resin filled tank 2 can be prevented from flowing out from the soft water outlet pipe 6. Further, since the water supply operation is performed immediately after the power supply to the control unit 13, the brine 14 is not sufficient and the regeneration is not sufficient in the next regeneration operation.
< reference embodiment 1 >
As shown in fig. 8, in the reference embodiment 1, immediately after the control unit 13 of the water softener 1 is supplied with power, the control unit 13 starts counting by the total water flow amount counter that monitors the integrated value of the water flow amount (step W1).
The total water flow counter continuously accumulates the amount of water supplied to the water softener 1 without resetting the amount of water, and determines the timing of the washing water supply operation. In reference to embodiment 1, assuming the amount of water used in the washing operation performed immediately after the water softener 1 is installed in a general household, the total water flow amount is set to 100L or more. The control unit 13 determines whether or not the count value of the total water flow amount is 100L or more (step W2). If the counter of the total amount of water passage is less than 100L (no in step W2), the routine proceeds to step S1 by skipping step W3. When the counter of the total amount of water passage is equal to or greater than 100L (yes in step W2), the routine proceeds to step W3, and then to step S1. In step W3, the control valve 3 switches the flow path to perform the wash water supply operation. The reason why whether or not the washing and water supply operation of step W3 is performed is selected based on the integrated value of the water flow amount immediately after the power supply to the control unit 13 is as follows.
First, in an assembly line in which the water softener 1 is installed in a general household, and the water softener 1 is assembled, a power supply conduction check is performed. If the washing and water-feeding operation is performed during the energization check, the energization check must be on standby until the washing and water-feeding operation is completed, and the efficiency of the check is deteriorated. Therefore, when the total water flow amount accumulated by the total water flow amount counter is checked, the water softener 1 is not subjected to the washing and water supply operation while the total water flow amount is small before being installed in a general household, and the energization check is advanced efficiently.
On the other hand, after the water softener 1 is installed in a general household and started to be used by a user, it is necessary to perform a washing and water-feeding operation immediately after the control unit 13 is supplied with power. Therefore, if the total water flow amount is equal to or more than the standard value based on the water amount used for the washing operation performed immediately after being installed in a general household, the washing water supply operation is performed immediately after the power is supplied to the control unit 13. In the present reference form 1, the standard amount is set to 100L. In this way, after the cleaning operation performed immediately after the construction is completed and the use is started by the user, the cleaning water supply operation is performed immediately after the power is supplied to the control unit 13.
The total water flow amount in step W2 may be appropriately changed according to the water flow amount of the cleaning operation performed immediately after the water softener 1 is installed, or the like. For example, when the amount of water to be passed in the cleaning operation is small, for example, because the amount of the ion exchange resin 9 in the ion exchange resin-filled tank 2 is small, the total amount of water to be passed may be set to 50L.
< embodiment 2 >
Fig. 9 is a flowchart showing the timing of execution of various operations in the water softener 1 of embodiment 2. Note that, the description of portions common to the contents of the flowchart of embodiment 1 is omitted.
Immediately after the power supply to the control unit 13 of the water softener 1, the control unit 13 starts counting by the timer a that monitors the elapsed time from the completion of the washing and water supply operation and counting by the cumulative counter that monitors the cumulative value of the amount of water passage from the completion of the washing and water supply operation (step S1). Step S2 is the same as embodiment 1. Note that, if the frequency of use differs for each day of the week, the setting time may be changed for each day of the week. For example, the setting may be made such that the week is 4 am and the week is 5 am. The steps thereafter are the same as those in embodiment 1.
Since the present embodiment 2 operates as described above, the flow proceeds to step S5 or step S6 to perform the back washing operation and the front washing operation, that is, the washing operation, once the set time has come every day (yes in step S2).
< determination of Water quality >
In order to confirm whether or not the cleaning operation was sufficient every 24 hours, the water quality of the retained water in the ion exchange resin-filled tank 2 was measured. The items of the measured water quality are turbidity, chroma and chemical oxygen demand. The turbidity and the chromaticity were measured by a WATER quality ANALYZER WA6000(WATER ANALYZER WA6000) manufactured by Nippon Denshoku industries Co., Ltd. Chemical oxygen demand (hereinafter referred to as COD) the value of CODMn was measured by titration in accordance with JIS K0102-17 titration method.
The RO water is filled in the ion exchange resin filling tank 2 and the brine tank 4 with the brine 14, respectively, using the raw water as the RO water having a pH of 7.5. + -. 0.5. Next, the cleaning regeneration feedwater operation in embodiment 2 described above is performed as 1 cycle, and the cycle is performed for 2 cycles. Thereafter, 2L of RO water was flowed into the ion exchange resin-filled tank from the raw water inlet pipe 2, and the water flowed out from the soft water outlet pipe 6 was collected. The water was used as raw immersion liquid water, and the water quality of the raw immersion liquid water was measured.
The chromaticity, turbidity, and CODMn increase are different from country to country, and for example, in some countries, the chromaticity increase is 5.0 degrees or less, the turbidity increase is 0.5 degrees or less, and the CODMn increase is 2.0mg/L or less.
(experiment 1)
The washing regeneration water supply operation is carried out for 2 cycles, and the sample is placed for 24 hours. After 24 hours, in order to collect the retained water in the ion exchange resin filled tank 2, 2L of RO water was introduced into the ion exchange resin filled tank 2 from the raw water inlet pipe 2, and then water was discharged from the soft water outlet pipe 6. The water quality of the water was measured, and the water quality after 24 hours was compared with that of the raw water of the immersion liquid, and the chromaticity, turbidity and increase in CODMn were measured. The increase in chroma, turbidity and CODMn were all very small values. The increase in color, haze, CODMn is collated in table 1. The above criteria are met.
(experiment 2)
The chromaticity, turbidity and increase in CODMn were measured in the same manner as in experiment 1, except that the standing time was 72 hours. The increase in color, turbidity and CODMn was over 24 hours. The increase in color, haze, CODMn is collated in table 1. The above criteria are not satisfied.
[ Table 1]
| Time of starting water supply | Increase in turbidity | Increase in chroma | Increase in CODMnMeasurement of | |
| |
After 24 hours | 0.1 degree | 0.8 degree | 0.8mg/ |
| Experiment | ||||
| 2 | After 72 hours | 0.139 degree | 0.5 degree | 4.8mg/L |
While the present invention has been described with reference to specific embodiments, it will be apparent to those skilled in the art that various changes and/or modifications may be added without departing from the spirit and scope of the present invention.
The present application is based on japanese patent applications filed on 6/9/2018 (japanese application 2018-.
Industrial applicability of the invention
According to the utility model discloses, play the effect that can provide a water softener as follows: since the cleaning operation in the ion exchange resin filling tank can be set to be performed at a predetermined timing every day, the water to be treated flowing in from the raw water inlet pipe flows out to the soft water outlet pipe when the water is passed through the cleaning operation, but such a problem can be prevented by setting the predetermined timing to a period when the water is not passed through the soft water outlet pipe. The present invention having this effect is useful for a water softener that performs a water softening treatment by feeding water to be treated to an ion exchange resin filling tank filled with an ion exchange resin.
Claims (4)
1. A water softener for performing a softening treatment by passing water to be treated to an ion exchange resin, the water softener comprising:
an ion exchange resin-filled tank filled with an ion exchange resin;
a brine tank for storing brine for regenerating the ion exchange resin; and
a control unit that switches between a softening operation for softening the water to be treated by passing the water through the ion exchange resin in the ion exchange resin filling tank, a cleaning operation for cleaning the inside of the ion exchange resin filling tank, a regeneration operation for regenerating the ion exchange resin by passing the brine in the brine tank through the ion exchange resin in the ion exchange resin filling tank, and a water supply operation for supplying water to the inside of the brine tank,
the control unit controls the cleaning operation to be performed at a predetermined timing.
2. The water softener of claim 1 wherein the prescribed time is between 0 a.m. and 6 a.m.
3. The water softener according to claim 1 or 2, wherein the prescribed time is the same time of day.
4. A water softener for performing a softening treatment by passing water to be treated to an ion exchange resin, the water softener comprising:
an ion exchange resin-filled tank filled with an ion exchange resin;
a brine tank for storing brine for regenerating the ion exchange resin; and
a control unit that switches between a softening operation for softening the water to be treated by passing the water through the ion exchange resin in the ion exchange resin filling tank, a cleaning operation for cleaning the inside of the ion exchange resin filling tank, a regeneration operation for regenerating the ion exchange resin by passing the brine in the brine tank through the ion exchange resin in the ion exchange resin filling tank, and a water supply operation for supplying water to the inside of the brine tank,
the control unit controls the washing operation and the water supply operation to be performed immediately after power is supplied to the control unit.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018166656A JP2020039992A (en) | 2018-09-06 | 2018-09-06 | Water softener |
| JP2018-166656 | 2018-09-06 | ||
| JP2018170399A JP2020040028A (en) | 2018-09-12 | 2018-09-12 | Water softener |
| JP2018-170399 | 2018-09-12 | ||
| PCT/JP2019/035084 WO2020050381A1 (en) | 2018-09-06 | 2019-09-05 | Water softener |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112672979A true CN112672979A (en) | 2021-04-16 |
Family
ID=69722443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980057724.0A Pending CN112672979A (en) | 2018-09-06 | 2019-09-05 | Water softener |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN112672979A (en) |
| TW (1) | TW202019830A (en) |
| WO (1) | WO2020050381A1 (en) |
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- 2019-09-05 CN CN201980057724.0A patent/CN112672979A/en active Pending
- 2019-09-05 WO PCT/JP2019/035084 patent/WO2020050381A1/en not_active Ceased
- 2019-09-06 TW TW108132146A patent/TW202019830A/en unknown
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| JPH11342291A (en) * | 1998-06-01 | 1999-12-14 | Hitachi Ltd | Washing machine control method |
| JP2000218266A (en) * | 1999-01-28 | 2000-08-08 | Minoura Yoshimi | Small ion exchange resin softener with salt regenerator |
| JP2003236539A (en) * | 2002-02-15 | 2003-08-26 | Hitachi Hometec Ltd | Water softener |
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Also Published As
| Publication number | Publication date |
|---|---|
| TW202019830A (en) | 2020-06-01 |
| WO2020050381A1 (en) | 2020-03-12 |
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