JP3257265B2 - Water treatment device and water treatment method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention not only performs basic water treatment such as water purification, but also selects one of additional water treatments such as mineral addition and heavy metal removal. The present invention relates to a water treatment apparatus and a water treatment method that can be treated together.

[0002]

2. Description of the Related Art As a water treatment apparatus capable of additionally performing another water treatment in addition to a conventional water treatment such as a conventional water treatment, a mineral-added water treatment apparatus and a heavy metal removal type water treatment apparatus are known. Proposed. Among them, a typical example of a mineral-added type water purification treatment device will be described. After supplying the entire amount of raw water supplied by water from a faucet to a mineral supply section, adding a mineral component thereto, and then adding the entire amount thereof, This type is a type of purifying by guiding to a water purification device. In this type of mineral-added type water purification treatment device, adjustment for increasing or decreasing the amount of mineral water is performed by squeezing a water tap of a water source. As another type of this mineral-added water purification system, two types of water treatment, a mineral addition process and a water purification process, are simultaneously performed using activated carbon impregnated with a mineral component, and the concentration of the mineral component is controlled at a constant level. (JP-A-61-136483). In addition, there is a mineral-added water purification device of a type in which a mineral supply section is provided in a container, raw water is pumped into the container, and a mineral component is eluted from the mineral supply section into the raw water to obtain mineral water. In this method, a circulation circuit was provided to promote elution, and circulation was performed by a pump.

[0003]

However, in the conventional mineral-added water purification treatment apparatus by passing water through a faucet, the flow rate is largely changed because the flow rate is adjusted by the faucet, and accordingly, the amount of mineral added to the raw water is increased. Changes greatly,
There was a problem that stable mineral water could not be obtained.
Furthermore, there are various needs for water, and it is not always necessary to add mineral-added water. In response to such a demand to use only purified water without added minerals, the above-mentioned mineral-added type water purification apparatus cannot be freely selected as to whether or not mineral is added to raw water, so that it is inconvenient to use.

[0004] A mineral-added water purification apparatus using activated carbon impregnated with a mineral component (JP-A-61-1364).
No. 83) can control the mineral component concentration of mineral water to some extent, but it is not sufficient, and it is necessary to use expensive special activated carbon. No choice was made at all. Further, even if water which is subjected to another water treatment such as heavy metal removal other than the addition of minerals is desired, such a development cannot be expected at all with this configuration.

[0005] As another method, a mineral-added water purification treatment device by storage requires a long time for addition of mineral components from a mineral supply section to stored water, and a circulation pump for supplementing the process. There was a problem from the viewpoint of energy saving when using. In addition, there has been a hygiene problem in that, if not used for several days, unless the inside of the circulation circuit is washed for reuse, general bacteria will propagate in the container and the circulation circuit. Therefore, there was a problem in the safety of drinking water.

Although the above description has been made with a focus on the mineral-added type water treatment apparatus, the water treatment apparatus which performs not only purified water but also basic water treatment and additional additional water treatment is also included. There was a similar problem.

Therefore, the present invention solves such a conventional problem, and in addition to performing basic processing on raw water, it is also possible to selectively add processing according to needs. It is an object of the present invention to provide a good sanitary water treatment apparatus and water treatment method.

Another object of the present invention is to provide a water treatment apparatus and a water treatment method capable of supplying treated water having a stable concentration when a treatment according to needs is selectively added.

A further object of the present invention is to provide a water treatment apparatus and a water treatment method which can achieve sufficient sealing upon replacement of the secondary cartridge and can easily switch channels.

[0010] It is an object of the present invention to provide a water treatment apparatus and a water treatment method capable of appropriately adding minerals in addition to water purification treatment and supplying mineral water having a stable concentration.

[0011] It is an object of the present invention to provide a water treatment method capable of appropriately removing heavy metals and trihalomethanes in addition to water purification treatment and supplying a stable treated water.

[0012]

The water treatment apparatus of the present invention comprises:
A direct path connected to the raw water supply path, two or more parallel flow paths connected in parallel to the direct path, a secondary cartridge for additional water treatment provided in each of the parallel flow paths, a direct path, A primary cartridge for basic water treatment connected to the discharge side of the parallel flow path, a discharge path connected to the primary cartridge for discharging the treated water, and a flow path for switching the flow path between a direct path and a parallel flow path It is characterized by having switching means.

[0013] Preferably, the primary cartridge is a water purification cartridge. Suitably, the secondary cartridges have different functions.

Suitably, the secondary cartridge can be replaced with another secondary cartridge having a different function.

[0015] The water treatment apparatus of the present invention is characterized in that a constant flow regulating means is provided in the parallel flow path. Suitably, the constant flow regulating means is a constant flow valve.

The water treatment apparatus of the present invention is characterized in that the secondary cartridge is filled with a mineral additive, and the additional water treatment mode and the basic water treatment mode can be selected by the flow path switching means.

Further, the water treatment apparatus of the present invention is characterized in that when the secondary cartridge is removed, the parallel flow path provided with the secondary cartridge is automatically closed.

The water treatment apparatus of the present invention is characterized in that the flow path is automatically closed when the primary cartridge is removed.

Further, in the water treatment apparatus of the present invention, the parallel flow path
When two or more cartridges are removed, the basic water treatment mode is automatically set when the secondary cartridge is removed, and the water treatment stop mode is automatically set when the primary cartridge is removed.

It is desirable to provide a check valve in each of the raw water supply passage and the discharge passage. The water treatment method of the present invention is a basic water treatment mode for performing basic water treatment on supplied raw water,
One or more additional water treatment modes for performing additional water treatment in addition to the basic water treatment while limiting the supplied raw water to a constant flow rate are provided, and one or more of the basic water treatment mode and the additional water treatment mode are provided. Water treatment is performed by selecting one of the two modes.

It is preferable that the basic water treatment mode is a mode for performing a water purification process, and the additional water treatment mode is a mode for performing a mineral addition process together with the water purification process.

It is preferable that the basic water treatment mode is a mode for performing a water purification treatment, and the additional water treatment mode is a mode for performing a heavy metal removal treatment together with the water purification treatment.

It is preferable that the basic water treatment mode is a mode for performing a water purification treatment, and the additional water treatment mode is a mode for performing a trihalomethane removal treatment together with the water purification treatment.

[0024]

In the water treatment apparatus of the present invention, a direct passage and two or more parallel flow paths are provided, a secondary cartridge is provided in the parallel flow path, and a primary cartridge for performing basic water treatment is further provided. Since the route switching means is provided, in addition to performing the basic treatment on the raw water, it is also possible to selectively add a treatment according to needs, which is sanitary.

Since the primary cartridge carries out the water purification treatment, purified water can be supplied in any case.

Since the secondary cartridges have different functions, it is possible to add processing corresponding to various needs.

Since the secondary cartridge can be replaced with another secondary cartridge having a different function, even a water treatment apparatus with a small number of secondary cartridges can meet various needs.

Since the constant flow rate regulating means is provided in the parallel flow path, the quality of the discharged treated water can be stabilized. Since the constant flow regulating means is a constant flow valve, the flow can be constant with a simple configuration.

Since the secondary cartridge is filled with a mineral additive and the additional water treatment mode and the basic water treatment mode can be selected by the flow path switching means, one of the stable water quality mineral water and purified water can be touched. Can be easily switched.

When the secondary cartridge is removed, the parallel flow path is automatically closed, so that the flow path is automatically switched and set to provide excellent sealing.

Similarly, when the primary cartridge is removed, the flow path is automatically closed, so that the function of the water treatment apparatus can be automatically stopped with excellent sealing.

Further, in the water treatment apparatus of the present invention, the parallel flow path
When the secondary cartridge is removed, the mode is automatically set to the basic water treatment mode when the secondary cartridge is removed, and when the primary cartridge is removed, the mode is automatically set to the water treatment device stop mode.

Further, since the check valve is provided, backflow from the water treatment device to the faucet side can be prevented. The water treatment method of the present invention includes a basic water treatment mode for performing a basic water treatment on supplied raw water, and an additional water treatment in combination with the basic water treatment while restricting the supplied raw water to a constant flow rate. One or more additional water treatment modes are provided, and one of the basic water treatment mode and the additional water treatment mode is selected for water treatment. In addition to performing basic treatment on raw water, It is possible to selectively add a treatment according to needs, and to discharge a stable treated water.

Since the additional water treatment mode is a mode for performing water purification treatment in addition to mineral addition treatment, stable mineral water can be supplied.

Since the additional water treatment mode is a mode for performing water purification treatment in addition to heavy metal removal treatment, stable purified water from which heavy metals have been removed can be supplied.

Further, since the additional water treatment mode is a mode for performing water purification treatment in addition to trihalomethane removal treatment, stable purified water from which trihalomethane has been removed can be supplied.

[0037]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a water treatment apparatus and a water treatment method of the present invention will be described in detail with reference to the drawings. FIG. 1 is a flow path configuration diagram of a mineral-added water purification treatment apparatus according to one embodiment of the present invention. FIG. 2 is a schematic front view of a mineral-added water purification apparatus according to one embodiment of the present invention. FIG. 3 is an enlarged view of an interlocking valve of the mineral-added water purification apparatus in one embodiment of the present invention, and FIG. 4 is an enlarged view of a constant flow valve of the mineral-added water purification apparatus in one embodiment of the present invention.

First, the main structure of the flow channel will be described with reference to FIGS. 1 and 2, reference numeral 5 denotes a secondary cartridge filled with a mineral additive. The secondary cartridge 5 includes a natural mineral material 5 such as barley stone or coral grains.
a and artificial mineral material 5b such as calcium and magnesium
Is filled. 5c is an inlet of the secondary cartridge 5, and 5d is an outlet. The secondary cartridge 5 includes a direct passage 21 ₀ and a parallel passage 21 ₁ connected to the raw water supply passage 20.
Among are provided in parallel flow paths 21 _1. Then thru 21 ₀ it is directly connected to the communication passage 22.

Reference numeral 9 denotes a primary cartridge for performing basic water treatment, and in this embodiment, a water purification cartridge filled with a filtering material. Of course, the basic water treatment may be a treatment such as a heavy metal removal treatment in addition to the water purification treatment as in this embodiment. The primary cartridge 9 has a granular activated carbon 9a for absorbing residual chlorine in raw water and preventing organic substances, and a hollow fiber membrane 9 for preventing general bacteria and organic substances and removing turbidity.
b is filled. 9c is an inlet of the primary cartridge 9, and 9d is an outlet.

Next, the flow path configuration of the water treatment apparatus will be further described. 1 is a faucet for opening and closing the water supply, and 2 is a check valve for preventing backflow from the raw water supply passage 20 to the water supply side when the faucet 1 is opened. P is a branch point at the flow path end of the raw water supply path 20, and the raw water flows in from the back side of the paper. And the direct passage 21 which is communicated in the basic water treatment mode.
₀ and the parallel flow path 21 ₁ communicated in the additional water treatment mode.
Are connected from this branch point P.

Reference numeral 4 denotes an interlocking valve which opens and closes in conjunction with the attachment / detachment of the secondary cartridge 5. This interlocking valve 4 is, as shown in FIG.
When the secondary cartridge 5 is removed, the secondary cartridge 5 is urged upward by the spring 12, and the valve seat 15 is closed by the seal ring 4b. However, when the secondary cartridge 5 is mounted, the inflow port 5c of the secondary cartridge 5 comes into contact with the distal end portion 4a of the interlocking valve 4, and the interlocking valve 4 is pushed down in the direction of arrow A so that the valve seat 1
5 is open. Therefore, the raw water flows into the secondary cartridge 5 from the cartridge inflow passage 14 in the direction of arrow B. Thus the interlock valve 4 will be automatically parallel flow paths 21 ₁ Removing the secondary cartridge 5 is closed, it can be an excellent water treatment apparatus to the sealing. Further, since the additional water treatment mode does not function due to the closing, the flow path in the basic water treatment mode can be set by switching the three-way valve 7. Further by controlling an electric or the like in conjunction with the interlock valve 4 way valve 7 selects thru 21 _0, it can be automatically a channel setting base water processing mode.

Next, reference numeral 6 denotes a constant flow valve, which is controlled so that a change in the water pressure generated when the faucet 1 is opened and closed becomes a substantially constant water amount when the water pressure exceeds a predetermined pressure. is there. The constant flow valve 6 will be described in more detail.
As shown in FIG. 4, the constant flow valve 6 is urged upward by a spring 18, and the water pressure in the direction of arrow D from the constant flow valve inflow passage 16 acts on the pressure receiving surface of the pressure receiving plate 17. The constant flow valve 6 is configured to interlock with the pressure receiving plate 17, and moves up and down integrally with a change in water pressure. Therefore, the hemispherical portion 6 at the lower end of the constant flow valve 6 is provided in the outflow hole 19a of the constant flow valve outflow water passage 19.
a goes in and out, and the raw water flowing there is made to have a constant flow rate. That is, when the pressure received by the pressure receiving plate 17 increases and the flow rate increases, the hemispherical portion 6a tends to be inserted into the outflow hole 19a by overcoming the urging force of the spring 18 and the flow between the hemispherical portion 6a and the outflow hole 19a. The road area is reduced and the flow rate is reduced. The reverse is true when the pressure drops. This has the effect of stabilizing the amount of mineral added to the raw water flowing through the secondary cartridge 5.

[0043] 7 is a three-way valve, a flow path switching means for switching whether to select thru 21 _0, both of the flow path of the parallel flow paths 21 _1. Raw water is directly passed from the branch point P of the raw water supply path 20 to the primary cartridge 9 or
The three-way valve 7 has a function of selecting and switching either one of passing the mineral-added water passing through the next cartridge 5 to the primary cartridge 9. The three-way valve 7 has a function of opening and closing the on-off valve 3 in addition to the function of switching the flow path. For this reason, the valve stem of the three-way valve 7 can communicate with the open / close valve 3 in synchronization with the switching, in addition to the communication hole that connects the primary cartridge 9 with either the direct passage 21 ₀ or the parallel passage 21 _1. Thus, a communication hole for an on-off valve is provided in parallel. As will be described later, when the number of the parallel flow paths increases, the number of the on-off valves 3 increases, so it is necessary to increase the number of the on-off valve communication holes. In order to enable the switching of the plurality of on-off valves 3, one inlet port having a width in the valve rotation direction is provided in the valve case of the on-off valve 3, and the discharge port is appropriately spaced on the opposite side of the inlet port. May be arranged in plural. Thus, the inlet port side of the on-off valve 3 can always communicate with the branch point P in any mode in the additional water treatment mode, and the discharge port can be selectively connected to the secondary cartridge 5 according to each mode. .
With the same configuration for the three-way valve 7, a plurality of flow paths can be switched. Also, these may be simply electrically linked. As shown in FIG. 2, when the three-way valve 7 is switched to select the mineral addition mode, the on-off valve 3 is opened, and in the basic water treatment mode, it is closed.

Reference numeral 8 denotes an interlocking valve similar to that of 4, which opens and closes in conjunction with the attachment and detachment of the primary cartridge 9. The structure is the same as the structure of the interlocking valve 4. When the primary cartridge 9 is mounted, the interlocking valve 8 is opened to allow water to flow to the primary cartridge 9, and when removed, it is closed to close the water treatment. In the apparatus, the communication passage 22 is closed and the water treatment stop mode is automatically set.

Reference numeral 10 denotes a check valve made of an elastic rubber ball, a hard ball, or the like, which floats and flows water only in a direction flowing out of the primary cartridge 9, and which is used when the faucet 1 is closed. In a state where the primary cartridge 9 is removed, the spout 11
It has a function of shutting off the outside air in the vicinity and in the discharge channel 23 and the inside of the water treatment device. The check valve 10 and the check valve 2 prevent the flow of water in the water treatment device from flowing backward, and are independent of the water supply and the outside air, thus being sanitary.

Next, the operation of the water treatment apparatus configured as described above will be described. First, the operation of the basic water treatment mode in which the solid arrow indicates the water flow direction will be described. FIG.
When the faucet 1 is opened to open, the raw water from the water supply passes through the check valve 2 and reaches the branch point P through the raw water supply path 20. At this time, the three-way valve 7 has a direct passage 21 ₀ ,
Because they switched to select the thru 21 ₀ out of parallel flow paths 21 _1, on-off valve 3 in conjunction with three-way valve 7 is in the closed state, the raw water is passed through the branch point P by an arrow J1 direction and it reaches the three-way valve 7 through the straight passage 21 _0.

Since the three-way valve 7 is open in the direction of the arrow J2, the raw water reaches the inlet 9c of the primary cartridge 9 through the interlocking valve 8 which is opened when the primary cartridge 9 is mounted. . A granular activated carbon layer 9a is provided in the primary cartridge 9 and passes through it as indicated by arrow J4. At this time, residual chlorine and organic matter in the raw water are adsorbed in the granular activated carbon layer 9a. The raw water from which residual chlorine and organic substances have been removed then passes through the hollow fiber membrane layer 9b as shown by the arrow J5, and general bacteria and finer organic substances are blocked, and turbidity is removed. The purified water is the primary cartridge 9
Is discharged from the discharge port 11 through the check valve 10 through the outlet 9d.

In the basic water treatment mode, since the secondary cartridge 5 is closed by the on-off valve 3 and the three-way valve 7, the direct passage 21 forming the flow path in the basic water treatment mode is provided.
_It is blocked from ₀ .

Next, the operation of the mineral addition mode, which is the additional water treatment mode indicated by the dotted arrow indicating the water flow direction, will be described. Mineral addition in mode direct path 21 _0, of the parallel flow paths 21 _1, and the three-way valve 7 is switched to select the parallel flow paths 21 _1. On-off valve 3 linked with three-way valve 7
Is in the open state, the raw water is guided in the direction of arrow M1. Thus the raw water flows toward the parallel passage 21 ₁ from the branch point P, interlocking valve 4 also because of the automatic open position by the mounting of the secondary cartridge, led the raw water in the direction of the arrow M2 secondary cartridge 5 To the inlet 5c. And 2
By passing through the natural mineral material 5a layer and the artificial mineral material 5b layer of the next cartridge 5, the mineral water is added to the raw water.

The mineral-added water flows from the outlet 5 d of the secondary cartridge 5 in the direction of arrow M 5 and reaches the constant flow valve 6. As described above, the flow rate of the raw water in the constant flow valve 6 is controlled to a substantially constant flow rate when the pressure on the pressure receiving plate 17 exceeds a predetermined water pressure. Since the water treatment capacity of the secondary cartridge 5 is usually stable, the quality of the treated water discharged from the secondary cartridge 5 is stabilized by keeping the flow rate substantially constant. That is, in the case of this embodiment in which the mineral addition process is performed, the mineral component elution rate in the secondary cartridge 5 is stable, so that the flow rate in the secondary cartridge 5 is substantially constant by the constant flow valve 6. Mineral elution concentration stabilized,
It can be fixed. The mineral-added and constant-flow water is guided through the three-way valve 7 in the direction of the arrow M7, and is sent to the primary cartridge 9 through the communication passage 22 in the same manner as in the basic water treatment mode. After passing through the primary cartridge 9, the mineral components remain as they are, but the residual chlorine and turbidity are removed and discharged from the discharge flow path 23. The mineral addition mode, the because thru 21 ₀ for J2 direction is closed in the three-way valve 7 is shut off, there is no possibility that raw water from the branch point P in the mineral water added is mixed flow.

Next, a plurality of parallel flow paths are provided, and a secondary cartridge 5 is provided in each of the parallel flow paths, and other water capable of selectively or interchangeably performing the additional water treatment mode in addition to the basic water treatment mode. The treatment device and the water treatment method will be described. FIG. 5 is a partial view of a parallel flow path of a water treatment apparatus according to another embodiment of the present invention. Note that the configurations denoted by the same reference numerals as those in the above-described embodiments are basically the same configurations, and thus description thereof will be omitted. _{3 '1, 3' 2,} ···, 3 'i is off _{valves, 4' 1, 4 '2} , ···, 4' i is interlocked valve, 5 _'1,
5 ′ ₂ ,..., 5 ′ _i , 5 ′ _j are secondary cartridges,
6 _'1, 6' _2, · · ·, 6 _'i is constant flow valve, 7' flow path switching unit, 21 ₀ thru, 21 _1, 21 _2, ...
.., 21 _i are parallel flow paths.

In this embodiment, a plurality of parallel flow paths, ie, two or more i flow paths are formed. Thru 21 ₀ is intended to be connected directly to the primary cartridge 9, parallel flow paths 21 _1, 21 _2, ..., the 21 _i, respectively, the on-off valve 3 _'1, 3' _2, ...・ 3 ' _i and interlocking valves 4' ₁ , 4 '
₂ ,..., 4 ′ _i and secondary cartridges 5 ′ ₁ , 5 ′ ₂ ,
., 5 'and _i, the constant flow valve 6' _1, 6 _'2, ...,
6 ′ _i are provided. The secondary cartridge _5'j is another secondary cartridge provided in the number i or more of the parallel flow paths. Secondary cartridge 5 _'1, 5' _2, ..., 5 '
_i have the inlets 5′c ₁ , 5′c ₂ ,.
5'c _i and the outlet _{5'd 1, 5'd 2, ···,} 5'd i are provided. Interlocking valve _{4 '1, 4' 2,} ···, 4 'i
When the secondary cartridges 5 ′ ₁ , 5 ′ ₂ ,..., 5 ′ _i are mounted, they are automatically opened in the same manner as the configuration shown in FIG. At the same time, the outlets 5′d ₁ , 5′d ₂ ,.
..., in which 5'd _i also communicated. 'Is _j, the appropriate position as necessary secondary cartridge 5' secondary cartridge 5 _1, 5 _'2, ..., 5' are those that can be mounted in exchange to _i. The secondary cartridge 5 ' _{1 of} this embodiment,
5 ′ ₂ ,..., 5 ′ _i , 5 ′ _j have different functions. Secondary cartridge 5 _'1, 5' _2, ...
・ When the 5 ′ _i is removed, the parallel flow paths 21 ₁ , 21 ₂ ,.
, 21 _i are automatically closed, and flow paths are set in parallel flow paths other than the removed parallel flow paths 21 ₁ , 21 ₂ ,..., 21 _i . When the switching means 7 'is switched, as described above, the flow path switching means 7' and the on-off valve 3 '
₁ , 3 ' ₂ , ..., 3' _i are linked, so the direct path 2
1 _0, parallel flow paths 21 _1, 21 _2,..., 1 out of 21 _i
The number of channels can be selected. Constant flow valve 6 ' ₁ ,
6 ′ ₂ ,..., 6 ′ _i are any of the parallel flow paths 21 ₁ , 21 ₂ ,.
..., it is limited to the same flow rate even 21 _i, only one installed in a flow path that is set, can be of common.

The operation of the water treatment apparatus of another embodiment configured as described above will be described. First, the operation in the basic water treatment mode will be described. When the faucet 1 is opened and opened, the raw water from the water supply passes through the check valve 2 and reaches the raw water supply path 20. In this case passage switching means 7 'thru 21 _0, parallel flow paths 21 _1, 21 _2, ..., from being switched to select the thru 21 ₀ out of 21 _i, on-off valve 3' ₁ , 3 ′ ₂ ,..., 3 ′ _i are closed, and the raw water passes through the branch point P and directly reaches the flow path switching means 7 ′. Since the flow path switching means 7 'is connected parallel flow path 21 ₀ and the communication path 22, the raw water communicates the interlock valve 8 in the open state by the mounting of the primary cartridge 9, the primary cartridge 9 Reach. The operation of the primary cartridge 9 is the same as that of the above-described embodiment, and the description is omitted. Here, residual chlorine and organic matter, raw bacteria and turbidity in the raw water are removed and discharged.

Next, the operation in the additional water treatment mode will be described. In the additional water treatment mode, the direct passage 21 ₀ , the parallel passages 21 ₁ , and 2 are switched by switching the switching means 7 ′.
1 _2,..., Parallel flow path 21 _one of the 21 _i, 21 _2, ··
-, one of 21 _i has been selected. That is, the on-off valves 3 ′ ₁ , 3 ′ ₂ ,...
3 'one of _i, for example, 3' since _i is in the open state, the raw water is guided to the parallel flow path 21 _i. For this reason, the raw water flows from the branch point P to the parallel flow path 21 _i , and the interlocking valve 4 ′ _i is automatically opened by the mounting of the secondary cartridge 5 ′ _i , so that the raw water reaches the secondary cartridge 5 ′ _i . . 'After addition of water treated with _i, the constant flow valve 6' secondary cartridge 5 the amount of treated water with _i is limited to a constant. Since the amount of treated water is limited to a constant, can be the processing capacity of the secondary cartridge 5 _'i ejects constant if steady concentration in the treated water. The treated water having a constant concentration is guided to the flow path switching means 7 ', and is sent to the primary cartridge 9 through the communication path 22 in the same manner as in the basic water treatment mode. The primary cartridge 9 is subjected to basic water treatment and is discharged from the discharge channel 23.

Although the above has been a general explanation, the following combinations are considered as a combination of the basic water treatment mode and the additional water treatment mode. One of the basic water treatment modes is a mode in which a water purification process is performed, and the additional water treatment mode is a mode in which a mineral addition process is performed together with the water purification process. As another combination, there is a mode in which the basic water treatment mode performs a water purification process, and a mode in which the additional water treatment mode performs a process of removing metals such as heavy lead and zinc in addition to the water purification process. The primary cartridge provided with the above-described granular activated carbon layer and hollow fiber membrane layer may be used. For the heavy metal removal treatment, it is appropriate to use a secondary cartridge filled with a chelating resin having a crosslinked polystyrene as a base and an iminodiacetic acid group as a chelating group. It is possible to provide purified water while removing heavy metals.

Although the above-mentioned water purification treatment is performed as the basic water treatment mode, it is also appropriate to provide a mode for removing trihalomethane and the like in addition to the water purification treatment as the additional water treatment mode. What is necessary is just to attach a secondary cartridge filled with granular activated carbon which adsorbs trihalomethane very much. This is an effective mode where the quality of the water supply is poor. Of course, it is convenient to equip all these modes as parallel flow paths and switch between them.

[0057] The above description is parallel passage 21 ₁ in the flow path switching means 7 ', 21 _2, ..., 2 provided on 21 _i
The operation was performed when any of the next cartridges 5 ′ ₁ , 5 ′ ₂ ,..., 5 ′ _i was selected. However, by replacing the secondary cartridge 5 ′ _j with the secondary cartridge 5 ′ _i , Processing can be performed. In this case, the secondary cartridge must be replaced manually. However, the configuration of the main body of the water treatment apparatus is simple, and can realize a low-cost water treatment apparatus and water treatment method.

[0058]

According to the water treatment apparatus of the present invention, a direct passage and one or more parallel flow paths are provided, a secondary cartridge is provided in the parallel flow path, and a primary cartridge for performing basic water treatment is provided. In addition to the above, the apparatus is provided with flow path switching means, so that in addition to performing basic processing on raw water, processing according to needs can be selectively added, so that it is convenient and sanitary.

Since the primary cartridge performs the water purification process, purified water can be supplied in any case. Since the secondary cartridges have different functions, it is possible to add processing corresponding to various needs. Further, since the secondary cartridge can be replaced with another secondary cartridge having a different function, even a water treatment apparatus with a small number of secondary cartridges can meet various needs.

Since the constant flow rate regulating means is provided in the parallel flow path, the quality of the discharged treated water such as the concentration can be stabilized. Since the constant flow regulating means is a constant flow valve, the flow can be constant with a simple configuration.

Since the secondary cartridge is filled with a mineral additive and the additional water treatment mode and the basic water treatment mode can be selected by the flow path switching means, one of the stable water quality mineral water and purified water can be touched with one touch. Can be easily and easily switched.

When the secondary cartridge is removed, the parallel flow path is automatically closed, so that the flow path is automatically switched and set to provide excellent sealing. Similarly, when the primary cartridge is removed, the communication path is automatically closed, so that the function of the water treatment apparatus can be automatically stopped with excellent sealing. Further, the water treatment apparatus of the present invention has one parallel flow path,
When the secondary cartridge is removed, the basic water treatment mode is automatically set, and when the primary cartridge is removed, the water treatment device is automatically set in the stop mode.

Further, since the check valve is provided, backflow from the water treatment device to the faucet side can be prevented, thereby preventing the invasion of general bacteria, thereby improving drinking safety. Can be.

The water treatment method of the present invention additionally includes a basic water treatment mode for performing basic water treatment on supplied raw water, and an additional water treatment in combination with basic water treatment while restricting supplied raw water to a constant flow rate. One or more additional water treatment modes are provided to carry out water treatment, and one of the basic water treatment mode and the additional water treatment mode is selected for water treatment. In addition to performing the process, it is possible to selectively add a process according to the needs, and it is possible to discharge the treated water having a stable concentration.

[Brief description of the drawings]

FIG. 1 is a diagram showing a flow path configuration of a mineral-added water purification apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic front view of a mineral-added water purification apparatus according to an embodiment of the present invention.

FIG. 3 is an enlarged view of an interlocking valve of the mineral-added water purification apparatus according to one embodiment of the present invention.

FIG. 4 is an enlarged view of a constant flow valve of the mineral-added water purification treatment apparatus according to one embodiment of the present invention.

FIG. 5 is a partial view of a parallel flow path of a water treatment apparatus according to another embodiment of the present invention.

[Explanation of symbols]

1 water faucet 2 check valves _{3,3 '1, 3' 2,} 3 'i -off valve _{4,4' 1, 4 '2,} 4' i interlock valve _{5,5 '1, 5' 2,} 5 'i , 5 _'j 2 primary cartridge 6,6' _1, 6 _'2, 6' _i constant flow valve 7, 7 'three-way valve 8 interlocking valve 9 primary cartridge 11 discharge port 20 raw water supply passage 21 ₀ thru 21 _1, 21 ₂ , 21 _i Parallel flow path 22 Communication path 23 Discharge flow path

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification FI C02F 1/68 520 C02F 1/68 520U 530 530C 530L 540 540A 540Z // C02F 1/44 1/44 B (58) Fields surveyed (Int.Cl. ⁷ , DB name) C02F 1/28 C02F 1/68

Claims (2)

(57) [Claims] [1 claim: a straight passage connected to the raw water supply passage, two and more parallel flow paths connected in parallel with the direct path, the parallel
An open / close valve for selectively opening and closing the parallel flow path is provided in the row flow path , and an interlocking valve provided in each of the parallel flow paths ,
The interlocking valve opens and closes in conjunction with the attachment / detachment of the cartridge.
A secondary cartridge for additional water treatment connected to the valve ;
A primary cartridge for basic water treatment connected to the discharge side of the direct passage and the parallel flow path, a discharge path connected to the primary cartridge for discharging treated water, and a discharge path of the direct passage and the parallel flow path A water treatment apparatus comprising flow passage switching means for switching a flow passage between water treatment devices, wherein a water treatment mode is selected by a combination of the on-off valve and the flow passage switching device, and the secondary cartridge is removed. A water treatment apparatus, wherein a parallel flow path provided with a secondary cartridge is automatically closed by the interlocking valve, and when the primary cartridge is removed, the flow path is automatically closed to enter a water treatment stop mode. 2. A water purification treatment mode using a primary cartridge for performing a basic water treatment for supplied raw water, and the basic water treatment while restricting the supplied raw water to a constant flow rate. Two or more additional water treatment modes using a secondary cartridge that performs additional water treatment are provided, and one of the water purification treatment mode and the additional water treatment mode is selected for water treatment, The water treatment method according to claim 1, wherein when the secondary cartridge is removed, a water treatment mode is automatically set, and when the primary cartridge is removed, a water treatment stop mode is automatically set.