JP2003220387A - Water treater - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the treated water from having a lowered purity by early eliminating the fluidized bed state of a treating material at the start of water feeding and keeping the treating material in the state of a fixed bed once it forms the fixed bed. <P>SOLUTION: The water treater is one that modifies raw water through a treating material 1, wherein a provision is made for a water feed adjustment means 8 that adjusts the flow rate of the raw water in the receptacle 2 of the treating material 1 at the start of water feed. The water treater may be one that is provided with a water feed adjustment means 8 that continues the water feed into the receptacle 2 while the withdrawal of the treated water from the treater is stopped. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water treatment device.

[0002]

2. Description of the Related Art A water softener is one of the water treatment devices for reforming raw water through a treatment material. This water softener uses a granular ion-exchange resin as a treatment material, and the raw water is passed through an accommodating part (hereinafter referred to as a “resin cylinder”) that accommodates the ion-exchange resin, so that the hardness of the raw water is reduced. The water is removed to obtain soft water as treated water.
The water softener is attached to a water supply line for cooling and heating equipment such as a boiler, a water heater, and a cooler, and is used to prevent scale from adhering to the inside of the cooling and heating equipment.

In the water softener, there is a so-called upward circulating water system in which water is passed from the lower part to the upper part in the resin cylinder as a raw water flow system. In this upward flow water softener, the ion exchange resin, the resin itself swells by its use, because the volume increases,
Usually, in anticipation of this increase in volume, the resin is housed in the resin cylinder while leaving a space of a predetermined height above the resin cylinder.

Therefore, in the upward flow water softener, when the intermittent operation of repeatedly passing water through the resin cylinder and stopping is performed, the ion-exchange resin is floated and settled in the resin cylinder. It will be repeated. That is, when the passage of raw water into the resin cylinder is started, the entire ion-exchange resin moves upward due to the flow of raw water, and the ion exchange resin is pressed against the upper portion of the resin cylinder, so that a so-called fixed bed is formed. It is formed. When water is continuously supplied to the fixed bed, hardness components are removed from the raw water until the ion-exchange resin on the upstream side of the fixed bed, that is, the ion-exchange resin on the lower side, disappears in order. The layer of resin (ie, the ion-exchange resin that has broken through) expands toward the top.

When the water flow into the resin cylinder is stopped, the force for pressing the ion exchange resin disappears, so that the ion exchange resin forming the fixed bed is
It falls to the lower part of the resin tube, and returns to the state where it was stored before water flow, that is, the entire ion-exchange resin settles in the lower part of the resin tube, and the upper space is formed again.

By the way, in the water softener, it takes time to form the fixed bed at the start of water flow, or when the fixed bed is repeatedly formed as in the case of intermittent operation, the hardness component is removed. There is a problem that it becomes insufficient and the purity of the soft water decreases. Next, the reason why this problem occurs will be described.

First, the reason why a problem occurs at the start of water flow will be described. At the start of water flow, the ion-exchange resin is agitated by the flow of raw water and becomes a so-called fluidized bed in a fluidized state, moving toward the upper part of the resin cylinder. Therefore, if it takes a long time to move the ion-exchange resin, the ion-exchange resin is agitated remarkably during that time, so that a fixed mixture of a broken-through resin and an unbreakable resin in the ion-exchange resin is fixed. A floor is formed (hereinafter, this phenomenon is referred to as "rearrangement phenomenon"). When water is passed to the fixed bed where this rearrangement phenomenon has occurred,
Since the contact state between the raw water and the unbreakthrough ion-exchange resin varies, a part of the raw water flows out without sufficiently removing the hardness, resulting in hardness leakage. That is, in the upward flow water softener, if it takes time to form the fixed bed at the start of water flow, the rearrangement phenomenon at the start of water flow causes a decrease in the purity of the soft water.

Next, the reason why problems occur during intermittent operation will be described. During the intermittent operation, when the water flow is stopped and the flow of the raw water in the resin cylinder is stopped, the ion exchange resin forming the fixed bed falls all at once toward the lower part in the resin cylinder. At this time, the raw water in the lower part of the fixed bed displaced by the falling ion exchange resin becomes an upward flow with a high flow velocity (hereinafter, referred to as “high-speed upward flow”), and goes to the upper part of the resin cylinder. Flowing. Then, the high-speed upward flow winds up the broken-through resin in the lower part of the resin cylinder and conveys it to the upper part of the resin cylinder, so that the broken-through resin and the unbreakable resin in the ion-exchange resin are mixed. I will end up.

Then, when water flow is restarted, the fixed bed is formed in a state where the resin that has passed through and the resin that has not passed through are still mixed with each other, and a rearrangement phenomenon similar to the above occurs. Becomes Therefore, if water is passed through the fixed bed in which the rearrangement phenomenon has occurred, hardness leakage will occur as in the above case. Therefore, in the upward flow water softener, when the fixed bed is repeatedly formed by the intermittent operation, the rearrangement phenomenon of the fixed bed makes hardness leakage more likely to occur and lowers the purity of the soft water. Occurs.

Therefore, in order to prevent the purity of soft water from decreasing in the upward flow water softener, the fluidized bed state is eliminated early at the start of water flow and the fixed bed is formed. After that, it is necessary to maintain the state in which the fixed bed is formed.

[0011]

The problem to be solved by the present invention is to eliminate the fluidized bed state of the treatment material early at the start of water flow, and after the fixed bed of the treatment material is formed, By maintaining the state where the fixed bed is formed, the purity of the treated water is prevented from decreasing.

[0012]

The present invention has been made to solve the above problems, and the invention according to claim 1 is a water treatment apparatus for reforming raw water through a treatment material. At the start of water flow, water flow adjusting means for adjusting the flow rate of the raw water in the storage portion of the treatment material is provided.

According to a second aspect of the present invention, in a water treatment device for reforming raw water through the treatment material, when the removal of the treated water from the water treatment device is stopped, It is characterized in that it is provided with a water flow adjusting means for continuing water flow into the accommodating portion.

According to a third aspect of the present invention, in a water treatment device for reforming raw water through a treatment material, at the start of water passage, the flow rate of the raw water in the accommodating portion of the treatment material is adjusted, and It is characterized in that it is provided with a water flow adjusting means for continuing water flow into the inside of the accommodating portion when the removal of the treated water from the water treatment device is stopped.

The invention according to a fourth aspect is characterized in that the water flow adjusting means is a circulation line connected between the raw water inflow portion and the treated water takeout portion in the accommodating portion.

The invention according to claim 5 is characterized in that a movement adjusting means for the processing material is provided in the accommodating portion.

According to a sixth aspect of the present invention, the movement adjusting means is a partition body that has a through hole that allows the treatment material to pass therethrough, and divides the accommodating portion in a direction intersecting a direction in which raw water flows. It is characterized by being.

According to a seventh aspect of the present invention, the accommodating portion is
The feature is that the raw water is divided in the water flow direction.

Further, the invention according to claim 8 is characterized in that the treating material is an ion exchange resin or a filter material.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described. The present invention can be suitably implemented in a water treatment device that reforms raw water through a treatment material. That is, the present invention can be suitably implemented in a water treatment device that allows raw water to pass through the treatment material storage portion and reforms the raw water by the treatment material.
As the treatment material, a granular treatment material such as an ion exchange resin or a filter material (particularly a filter material such as activated carbon or zeolite that removes impurities by adsorption) is used. Here, examples of the water treatment device using the ion exchange resin as the treatment material include a water softener and a pure water device. In addition, examples of the water treatment device that uses the filter medium as the treatment material include a filter device and a water purifier.

The present invention can be particularly suitably implemented in a water treatment device of upward circulating water type. In the following, a case where the embodiment of the present invention is applied to an upward circulating water softener will be described as an example.

First, the basic structure of the upward circulating water softener will be described. In the water softener, an ion exchange resin as a treating material is contained in a container (hereinafter, referred to as “resin cylinder”). The resin cylinder has, for example, a cylindrical shape and is arranged such that its axis is in the vertical direction, and raw water is allowed to pass through the inside of the resin cylinder from the lower part to the upper part. In the resin cylinder, the ion exchange resin has a space of a predetermined height (hereinafter, referred to as “upper space”) in the upper part of the resin cylinder in consideration of an increase in volume due to swelling as described above. It is stored as it is. Therefore, by supplying raw water to the water softener, when starting the passage of raw water into the resin cylinder, the ion exchange resin, after moving the height corresponding to the upper space by the flow of raw water, It is pressed against the upper part of the resin cylinder, and as a result, a fixed bed of the ion exchange resin is formed. After that, by continuing the water flow into the resin cylinder, the hardness component in the raw water is removed by ion exchange treatment when passing through the fixed bed, and soft water as treated water is taken out from the resin cylinder. .

Next, the characteristic part of the water softener will be described. First, the water softener of the first embodiment is provided with water flow adjusting means for adjusting the flow rate of raw water in the resin cylinder at the start of water flow. The water flow adjusting means has a function of increasing the flow rate of raw water in the resin cylinder.
Then, the flow rate of the raw water in the resin cylinder is increased by increasing the flow rate of the raw water in the resin cylinder.

In the water softener of the first embodiment, the water flow adjusting means is a circulation line connected between the raw water inflow part and the treated water takeout part in the resin cylinder. And
The circulation line circulates the soft water from the treated water outlet to the raw water inflow portion and re-injects the soft water into the resin cylinder, thereby increasing the flow rate of the raw water in the resin cylinder. With this configuration, the flow velocity of the raw water in the resin cylinder can be increased without changing the flow rate of the raw water supplied to the water softener. Here, the water flow adjusting means may be configured to increase the flow rate of the raw water in the resin cylinder by increasing the flow rate of the raw water supplied to the water softener.

In the water softener of the first embodiment, when the flow of water is started, the flow rate of the raw water in the resin cylinder is increased by the water flow adjusting means to move the ion exchange resin to the upper part of the resin cylinder. It can be moved quickly. That is, the time from the start of water flow until the formation of the fixed bed can be shortened. Therefore, stirring of the ion-exchange resin can be suppressed until the fixed bed is formed, so that the rearrangement phenomenon at the start of water flow can be prevented. Moreover, in the water softener of the first embodiment, at the start of water flow, even if the flow rate of the raw water supplied to the water softener is small,
It is possible to prevent the occurrence of the rearrangement phenomenon at the start of water flow, and thus to prevent the purity of soft water from decreasing.

Next, a second embodiment will be described.
The water softener of the second embodiment, when stopping the extraction of soft water from the water softener, that is, when stopping the supply of raw water to the water softener, to pass water into the resin cylinder. Equipped with continuous water flow adjustment means.

In the water softener of the second embodiment, the water flow adjusting means is the same circulation line as in the first embodiment. Then, when the supply of the raw water to the water softener is stopped, the soft water in the resin cylinder is circulated from the treated water extraction part to the raw water inflow part by the circulation line, and is made to flow again into the resin cylinder. . At this time, the flow rate of the soft water in the circulation line is such that the flow rate in the resin tube is equal to or higher than a predetermined flow rate at which the fixed bed can be maintained in the entire ion-exchange resin. It is set according to the cross-sectional area of the channel. With this configuration, it is possible to continue the water flow into the resin cylinder without supplying the raw water to the water softener.

In the water softener of the second embodiment, after the fixed bed is formed, even when the supply of the raw water to the water softener is stopped, the water flow adjusting means allows the resin cylinder By continuing the water flow to, it is possible to maintain the state in which the fixed bed is formed. Therefore, in the water softener of the second embodiment, even if the intermittent operation, that is, the removal of the soft water from the water softener and the stop thereof are repeated, the ion exchange resin does not float and settle, so The arrangement phenomenon does not occur, and the deterioration of the purity of the soft water can be reliably prevented.

Here, in the water softener of the second embodiment, the water flow adjusting means continues to supply the raw water to the water softener even when the extraction of the soft water from the water softener is stopped. It can be configured so that water is continuously flowed into the resin cylinder.

Next, a third embodiment will be described.
The water softener of the third embodiment includes a water flow adjusting means having the function of the water flow adjusting means of the first embodiment and the function of the water flow adjusting means of the second embodiment. That is,
The water softener in the third embodiment increases the flow rate of raw water and starts the flow of raw water from the water softener until the fixed bed is formed in the resin cylinder at the start of water passage, particularly at the start of water passage. A water flow adjusting means for continuing water flow into the resin cylinder when the take-out is stopped is provided.

In the water softener of the third embodiment, the water flow adjusting means is the same circulation line as in each of the embodiments. Then, at the time of starting the passage of the raw water into the resin cylinder, the soft water is circulated from the treated water extraction part to the raw water inflow part, and is flowed into the resin cylinder again, so that the flow rate of the raw water in the resin cylinder is increased. To increase. Further, when the supply of raw water to the water softener is stopped, the soft water in the resin cylinder is circulated from the treated water take-out section to the raw water inflow section by the circulation line, and is made to flow again into the resin tube. . Here, the flow rate of the soft water in the circulation line at the start of water flow is set to the same flow rate as in the first embodiment,
Further, the flow rate of soft water in the circulation line when the supply of raw water to the water softener is stopped is set to the same flow rate as in the second embodiment.

In the water softener of the third embodiment, at the start of water flow for the first time, the fixed bed is promptly formed as in the water softener of the first embodiment, and during the subsequent water flow, The fixed water is maintained in a state where the fixed bed is formed by the raw water that flows into the resin cylinder. Therefore, like the water softener of the first embodiment, it is possible to prevent the occurrence of the rearrangement phenomenon at the start of water passage, and, like the water softener of the second embodiment, the rearrangement during intermittent operation. Since the occurrence of the phenomenon can be prevented, it is possible to reliably prevent the purity of the soft water from decreasing.

Next, another embodiment of the present invention will be described. In this embodiment, in the water softener of each of the above-described embodiments, a movement adjusting means for the ion exchange resin is provided in the resin cylinder. The movement adjusting means is means for adjusting the movement of the ion exchange resin when the flow of raw water in the resin cylinder is stopped.

Here, when the flow of the raw water in the resin cylinder is stopped, it means that the ion exchange resin is regenerated, the operation of the water softener is stopped, or the like. When the supply of raw water and the operation of the water flow adjusting means are stopped (hereinafter, referred to as “at the end of water flow”). Further, the water softener of the first embodiment also includes a water flow stop state in which water flow is stopped during intermittent operation. In the following description, it is referred to as the end of water passage, including the stop of water passage during intermittent operation in the water softener of the first embodiment.

Further, the adjustment of the movement of the ion exchange resin is to reduce the speed at which the ion exchange resin drops toward the lower part of the resin cylinder (hereinafter referred to as "falling speed") at the end of the passage of water. It is to make adjustments. Therefore, at the end of the water flow, the ion-exchange resin can be slowly dropped, so that the ion-exchange resin falls all at once, and the raw water below the fixed bed flows upward with a high flow velocity ( Hereinafter referred to as "high-speed updraft")
Can be prevented. Therefore, by providing the water softener of each of the embodiments with the movement adjusting means, it is possible to prevent stirring of the ion exchange resin at the end of the water flow, that is, the occurrence of the rearrangement phenomenon. It is possible to reliably prevent deterioration of the purity of the soft water when the water flow is restarted. In particular, when the water softener of the first embodiment is provided with the movement adjusting means,
The occurrence of the rearrangement phenomenon can be reliably prevented even when the water flow is stopped during the intermittent operation. Therefore, even when the intermittent operation is performed, the purity of the soft water can be reliably prevented from lowering.

Next, the movement adjusting means will be described in detail. The movement adjusting means may be a partition body that includes a through hole that allows the ion exchange resin to pass therethrough, and partitions the resin cylinder in a direction intersecting the water flow direction of the raw water. In this embodiment, the water flow direction of the raw water of the water softener is, as described above, the axial direction of the resin cylinder, and the resin cylinder is arranged such that its axis is in the vertical direction. The direction crossing the water flow direction of the raw water is the radial direction of the resin cylinder. Also, the direction that intersects the water flow direction is
This includes not only the direction in which the raw water flows, that is, the direction in which it intersects orthogonally with the axial direction of the resin cylinder, but also the direction in which it intersects in an inclined state. Then, the partition body is configured as a partition plate having a large number of through holes (hereinafter referred to as "horizontal partition plate"), and by providing this horizontal partition plate in the resin cylinder, the diameter of the resin cylinder is reduced. The structure shall be divided in the direction. Here, the horizontal partition plate is not limited to one location in the fixed floor, but may be disposed in a plurality of locations.

Further, the movement adjusting means may fill a predetermined filling material in a lower portion of the resin cylinder to form a filling material layer having a predetermined height, and use a gap between the filling materials as a flow path. Can also be formed by. As the filler,
A known filler such as a granular material having a particle size larger than that of the ion exchange resin (for example, gravel) or Raschig rings used in a packed tower is used. put it here,
The filler may be an ion exchanger,
Further, a filter medium can be used. Further, the movement adjusting means can be formed by the filler layer and the horizontal partition plate.

Next, still another embodiment of the present invention will be described. In this embodiment, a water softener having a configuration in which the resin cylinder is partitioned in the water flow direction of the raw water is provided with the water flow adjusting means of each of the embodiments, and further, the water flow adjusting means and the moving unit. The adjustment means is provided. In this embodiment, the water flow direction of the raw water of the water softener is the axial direction of the resin cylinder as described above,
A partition body for partitioning the resin cylinder in the axial direction, for example, a partition plate (hereinafter referred to as “vertical partition plate”) is provided in the resin cylinder. The vertical partition plate divides the inside of the resin cylinder in the axial direction, thereby forming a predetermined number of small passage cross-sectional areas in the resin cylinder. The reason for partitioning the inside of the resin cylinder in the axial direction in this way is that when the inner diameter of the resin cylinder is large and the flow passage cross-sectional area is large, the inside of the resin cylinder is partitioned in the axial direction as described above. This is because when the flow passage cross-sectional areas are reduced, it is possible to suppress the occurrence of rearrangement phenomenon due to the drop of the ion exchange resin at the end of water flow.

Even in such a water softener, if the water flow adjusting means in the first embodiment is provided, the occurrence of the rearrangement phenomenon at the start of water flow can be prevented, so that the purity of the soft water is prevented from lowering. can do. Further, when the water flow adjusting means of the second embodiment is provided, even if intermittent operation is performed, the state in which the fixed bed is formed can be maintained, so that the rearrangement phenomenon does not occur and soft water is generated. It is possible to prevent deterioration of the purity. Furthermore, when the water flow adjusting means of the third embodiment is provided, the occurrence of the rearrangement phenomenon at the start of water flow and at the time of intermittent operation can be prevented, so that the purity of soft water can be prevented from decreasing.

If the movement adjusting means is further provided in addition to the water passing adjusting means of each of the embodiments, the rearrangement phenomenon at the end of the water passing can be prevented, so that the purity of the soft water is reduced. It is possible to reliably prevent the decrease. In particular, when the movement adjusting means is provided in addition to the water passing adjusting means in the first embodiment, the occurrence of the rearrangement phenomenon can be reliably prevented even when the water passing is stopped during the intermittent operation. Therefore, it is possible to reliably prevent the purity of the soft water from decreasing.

Here, in this embodiment, when the horizontal partition plate and the filler layer are provided in the resin cylinder, they can be provided for each section formed by the vertical partition plate. Further, the horizontal partition plate can be provided so as to partition each of the compartments collectively, that is, so as to partition the entire resin cylinder. In this case, vertical partition plates are provided above and below the horizontal partition plate. The configuration is provided. Further, the horizontal partition plate may be formed integrally with the vertical partition plate.

[0042]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a cross-sectional explanatory view showing a schematic configuration of a first embodiment of the present invention, and FIG. 2 is a cross-sectional explanatory view showing a state at the start of water flow into the resin cylinder in the first embodiment. Further, FIG. 3 is a cross-sectional explanatory view showing a water flowing state into the resin cylinder in the first embodiment. here,
The water treatment device according to the first embodiment is a water softener that removes hardness from water supplied to a boiler or the like. Therefore, the treating material in this first embodiment is an ion exchange resin. The water softener of the first embodiment is an upward circulating water softener.

First, the basic structure of the water softener will be described with reference to FIG. In FIG. 1, the water softener is
A resin cylinder 2 as a housing for the ion exchange resin 1 is provided. The resin cylinder 2 has a substantially cylindrical shape, and is arranged such that its axis is in the vertical direction. The resin cylinder 2
An upper filter 3 for preventing the ion exchange resin 1 from flowing out is provided in the upper part of the inside, and a lower filter 4 similar to the upper filter 3 is also provided in the lower part. The ion exchange resin 1 is housed on the lower filter 4 up to a predetermined height position in the resin cylinder 2. The predetermined height position is a height determined in consideration of an increase in volume due to the swelling of the ion exchange resin 1. Therefore, with the upper part of the layer of the ion exchange resin 1,
An upper space (reference numeral omitted) having a predetermined height exists between the upper filter 3 and the upper filter 3.

A raw water line 5 for supplying raw water into the resin tube 2 is connected to the lower portion of the resin tube 2, and an upper portion of the resin tube 2 is treated from inside the resin tube 2. A soft water line 6 for extracting soft water as water is connected. On the downstream side of the soft water line 6, a soft water using device (not shown) such as a boiler is connected.

Next, the basic operation of the water softener will be described. First, when the supply of raw water to the water softener is started, the raw water flows into the resin cylinder 2 through the raw water line 5. Then, the ion exchange resin 1 in the resin cylinder 2 is pushed up by the flow of the raw water flowing into the resin cylinder 2, and the entire ion exchange resin 1 floats. Then, the entire ion-exchange resin 1 is pressed against the upper filter 3, and the fixed bed 7 of the ion-exchange resin 1 is formed (see FIG. 3).

After that, the state in which the fixed floor 7 is formed is maintained in the resin cylinder 2 while continuing the water flow into the resin cylinder 2, The raw water of
Hardness is removed when passing through the fixed bed 7, and is taken out as soft water from the soft water line 6. Then, this soft water is supplied to the soft water using device (not shown).
Here, by continuing the supply of the raw water to the water softener to continue the water flow into the resin cylinder 2, the ion exchange resin 1 on the upstream side of the fixed bed 7, that is, on the lower side, is sequentially charged. Hardness is removed from the raw water until there is no exchange capacity. Therefore, in the fixed bed 7, the ion exchange resin (that is,
The layer of the ion-exchange resin that has passed through will expand from the lower part of the fixed bed 7 to the upper part.

Next, in the case where the operation of the water softener is stopped in accordance with the stop of the operation of the device using soft water, or when the ion exchange resin is regenerated, the resin tube 2 is used.
The case of stopping the passage of raw water to the inside will be described. In this case, when the water flow into the resin cylinder 2 is stopped, the flow of raw water is stopped and the force for pressing the ion exchange resin 1 toward the upper filter 3 is lost, so that the ion exchange resin 1 begins to fall. . Then, when the entire ion-exchange resin 1 drops onto the lower filter 4, the upper space is formed again in the resin cylinder 2, and the housing state before the start of water flow is restored. Then, the operation of the water softener is restarted in response to the restart of the device using soft water, or the ion exchange resin 1 is regenerated by using a regenerated material such as salt water.

Now, the characteristic part of the water softener of the first embodiment will be described. The water softener is provided with a circulation line 8 as water flow adjusting means. This circulation line 8
Is a raw water inflow part and a treated water extraction part in the resin cylinder 2,
That is, it is connected between the raw water line 5 and the soft water line 6.

In the circulation line 8, the soft water line 6
A check valve 9 and a circulation pump 10 are provided from the side. First, the check valve 9 allows the flow from the soft water line 6 to the raw water line 5 and shuts off the flow from the raw water line 5 to the soft water line 6. Next, the circulation pump 10 uses the soft water line 6
The soft water is circulated from the raw water line 5 to the raw water line 5. Further, the circulation pump 10 includes the circulation line 8
The soft water therein (hereinafter referred to as "circulation water") can be circulated at a flow rate higher than a predetermined flow rate. This predetermined flow rate is such that the flow rate of the circulating water flowing into the resin tube 2 is equal to or higher than the flow rate at which the fixed bed 7 formed of the entire ion exchange resin 1 can be maintained. It is the flow rate determined according to the cross-sectional area. Further, the circulation pump 10 can adjust the flow rate of the circulating water by adjusting the rotation speed and the like.

A control valve 11 is provided downstream of the connection of the circulation line 8 in the soft water line 6. The control valve 11 is an open / close type control valve, and when the supply of raw water to the water softener is stopped, that is, the removal of soft water from the water softener is stopped, the circulation line 8 The circulating water inside is the soft water line 6
To prevent it from being supplied to the equipment using soft water on the downstream side of
It is provided to reliably circulate between the circulation line 8 and the resin cylinder 2.

Next, the control configuration of the water softener will be described. First, the circulation pump 10 and the control valve 1
1 are respectively connected to the controller 13 via the line 12. Further, a flow rate sensor 14 is provided on the upstream side of the connection part of the circulation line 8 in the raw water line 5 as a flow detection means for detecting the supply state of the raw water to the water softener. And this flow sensor 1
4 is also connected to the controller 13 via the line 12.

Then, the controller 13 controls the circulation pump 10 and opens / closes the control valve 11 based on a flow detection signal from the flow rate sensor 14 according to a preset program. Thus, the flow rate of raw water in the resin cylinder 2 is adjusted.

Now, the operation contents of the water softener will be described together with the control contents of the controller 13. Here, the following description is for the operation from the time when the regeneration of the ion exchange resin 1 is completed to the time when the next regeneration is performed. Further, at the time when the regeneration of the ion exchange resin 1 is completed, the circulation pump 10 is in a stopped state and the control valve 11 is in a closed state.

After regeneration of the ion exchange resin 1 in the water softener, the controller 13 controls the flow rate sensor 1
Based on the detection signal from No. 4, the supply state of raw water to the water softener is monitored. Then, based on the detection signal from the flow rate sensor 14, when it is detected that raw water is supplied from the raw water line 5 to the water softener, the controller 13 operates the circulation pump 10, and
The control valve 11 is switched to the open state. At this time, the circulation pump 10 is controlled so as to circulate the circulating water at a flow rate equal to or higher than the predetermined flow rate, preferably the maximum flow rate possible by the circulation pump 10.

Then, the raw water flowing into the resin tube 2 from the raw water line 5 flows upward in the resin tube 2 while pushing up the ion exchange resin 1 in the resin tube 2. Then, the hardness component is removed by contact with the ion exchange resin 1 to become soft water, which is taken out from the soft water line 6 and used as the soft water using device (not shown).
Is supplied to. A part of the soft water that has flowed into the soft water line 6 flows into the raw water line 5 through the circulation line 8 as circulating water, and together with the raw water in the raw water line 5,
It flows into the resin cylinder 2. Therefore, the flow rate of the raw water in the resin tube 2 increases with respect to the flow rate of the raw water from the raw water line 5, and the flow rate of the raw water in the resin tube 2 increases.

Therefore, the raw water having the increased flow velocity promptly moves the entire ion exchange resin 1 in the resin tube 2 upward (see FIG. 2). At this time, since the ion exchange resin 1 is moved in a short time, the fixed bed 7 is formed with almost no stirring of the ion exchange resin 1 at that time. Therefore, the fixed bed 7 in which the resin that has passed through and the resin that has not passed through are not mixed, that is, the rearrangement phenomenon does not occur is formed (see FIG. 3).

Next, the controller 13 stops the circulation pump 10 while keeping the control valve 11 open after a lapse of a predetermined time from the start of the supply of the raw water to the water softener. Here, the predetermined time is the circulation line 8
The time set based on the time required to form the fixed bed 7 when the flow velocity of the raw water in the resin cylinder 2 is increased by the circulating water from. And thereafter, by supplying raw water to the water softener,
By continuing the water flow into the resin cylinder 2, the state in which the fixed bed 7 is formed is maintained. During this passage
Since the raw water in the resin tube 2 passes through the fixed bed 7 in which the rearrangement phenomenon does not occur, it is supplied to the equipment using soft water as high-purity soft water from which hardness has been sufficiently removed.

Next, a case where the extraction of the soft water from the water softener is stopped, that is, the case where the supply of the raw water to the water softener is stopped will be described. In this case, the controller 1
3 is based on the detection signal from the flow sensor 14,
When it is detected that the supply of raw water to the water softener is stopped, the circulation pump 10 is operated and the control valve 11 is closed. In addition, the controller 13
Adjusts the flow rate of the circulating water in the circulation line 8 to the predetermined flow rate by controlling the circulation pump 10.

Then, since the soft water from the resin cylinder 2 is stopped from being supplied to the equipment using the soft water, the circulation pump 10 is actuated so as to circulate between the resin cylinder 2 and the circulation line 8 as circulation water. Circulates, and flows in as raw water from the lower part of the resin cylinder 2. At this time, since the circulating water circulates between the resin tube 2 and the circulation line 8 at the predetermined flow rate at the predetermined flow rate, even while the supply of raw water to the water softener is stopped, The state in which the fixed bed 7 is formed is maintained.

When the supply of raw water to the water softener is started again, the controller 13 causes the flow sensor 14 to operate.
The control valve 11 is opened based on the detection signal from the above, and the circulation pump 10 is controlled as follows according to the detection result of the flow rate of the raw water based on the detection signal.

First, from the raw water line 5 to the resin tube 2
When the flow rate of the raw water flowing in is equal to or higher than the predetermined flow rate, the circulation pump 10 is stopped. Then, in this case, the state in which the fixed bed 7 is formed can be maintained by the raw water flowing into the resin cylinder 2. On the other hand, when the flow rate of the raw water flowing into the resin cylinder 2 is smaller than the predetermined flow rate, the circulation pump 10 is maintained in the operating state and the circulation pump 1 is maintained.
With the control of 0, the flow rate of the circulating water in the circulation line 8 is adjusted. In this case, the flow rate of the circulating water in the circulation line 8 is adjusted so as to compensate for the insufficient flow rate of the raw water flowing into the resin cylinder 2 with respect to the predetermined flow rate. Then, since the circulating water from the circulating line 8 is added to the raw water from the raw water line 5, the flow rate of the raw water in the resin cylinder 2 becomes the predetermined flow rate.
The fixed bed 7 can be maintained in the formed state.

Next, a case where the flow rate of the raw water changes while the raw water is being supplied to the water softener will be described. Even while the raw water is being supplied to the water softener, the controller 13 detects the flow rate of the raw water based on the detection signal from the flow rate sensor 14 as described above. Then, the operation of the circulation pump 10 is controlled according to the detection result.

First, from the raw water line 5 to the resin tube 2
A case where the flow rate of the raw water flowing into the inside is reduced below the predetermined flow rate will be described. In this case, based on the detection signal from the flow rate sensor 14, it is determined that the flow rate of the raw water has decreased below the predetermined flow rate, and the controller 13 operates the circulation pump 10 and causes the circulation pump to operate. The control of 10 adjusts the flow rate of the circulating water in the circulation line 8. At this time, the flow rate of the circulating water in the circulation line 8 is adjusted so that the flow rate of the raw water flowing into the resin cylinder 2 can be supplemented with the insufficient amount with respect to the predetermined flow rate. Then, since the circulating water from the circulation line 8 is added to the raw water from the raw water line 5, the flow rate of the raw water in the resin cylinder 2 becomes the predetermined flow rate, so that the fixed bed is maintained. can do.

Next, the case where the flow rate of the raw water increases from the state of being less than the predetermined flow rate will be described. In this case, the circulation pump 10 is controlled based on the detection signal from the flow rate sensor 14, and the flow rate of the circulating water in the circulation line 8 is decreased according to the increase of the flow rate of the raw water.
Then, when the flow rate of raw water reaches the predetermined flow rate, the circulation pump 10 is stopped.

After that, by operating the circulation pump 10 and adjusting the flow rate of the circulating water by the circulation pump 10 in accordance with the change of the flow rate of the raw water from the raw water line 5, the inside of the resin cylinder 2 is adjusted. The flow rate of raw water is controlled to be maintained at least at the predetermined flow rate. Then, the flow velocity of the raw water in the resin cylinder 2 is equal to that of the ion exchange resin 1
The flow rate is equal to or higher than the flow rate at which the fixed bed 7 can be maintained as a whole. Therefore, the state in which the fixed bed 7 is formed is maintained, and the generation of the fluidized bed can be prevented, so that the purity of the soft water can be prevented from being lowered due to the occurrence of the rearrangement phenomenon.

As described above, in the first embodiment, the fixed bed 7 can be formed quickly at the first passage of water after regeneration, so that the rearrangement phenomenon occurs at the start of passage of water. There is no. Then, after the fixed bed 7 in which the rearrangement phenomenon has not occurred is formed, the state in which the fixed bed 7 is formed is maintained, so that the ion exchange resin 1 repeats floating and sedimentation. There is nothing to do. Therefore, like the conventional water softener, when water flow is stopped,
When the ion-exchange resin drops at once, the raw water below the fixed bed 7 becomes an upward flow with a high flow velocity (hereinafter referred to as “high-speed upward flow”), and the ion-exchange resin 1 is stirred. Therefore, it is possible to prevent the rearrangement phenomenon from occurring. Therefore, even when the intermittent operation of the water softener is performed, it is possible to prevent the purity of the soft water from decreasing.

In the first embodiment, the flow rate of the circulating water by the circulation pump 10 is adjusted according to the flow rate of the raw water supplied to the water softener. After the supply of the raw water to the vessel is started, the circulation pump 10 may be continuously operated so that the flow rate of the raw water in the resin cylinder 2 is always equal to or higher than the predetermined flow rate. This configuration will be described as a second embodiment with reference to FIG. FIG. 4 is a sectional explanatory view showing a schematic configuration of the second embodiment of the present invention. In FIG. 4 showing the second embodiment, the same reference numerals as those in FIGS. 1 to 3 showing the first embodiment indicate the same members, and detailed description thereof will be omitted.

In the water softener of the second embodiment, the circulation pump 10 is constructed so as to be controlled on and off, and the circulation line 8 is used to adjust the flow rate of the circulation water by the circulation pump 10 to the predetermined flow rate. A constant flow valve 15 is provided on the downstream side of the circulation pump 10 in FIG. In the water softener of the second embodiment, the flow detecting means for detecting the supply state of the raw water to the water softener uses the flow switch 16 for detecting the presence / absence of flow.
Then, the controller 13 controls the circulation pump 10 to be turned on / off and controls the opening / closing of the control valve 11 based on a detection signal from the flow switch 16 according to a preset program, thereby controlling the resin. The flow rate of raw water into the cylinder 2 is adjusted.

Now, the operation contents of the water softener will be explained together with the control contents of the controller 13. Here, the following description is for the operation from the time when the regeneration of the ion exchange resin 1 is completed to the time when the next regeneration is performed. Further, at the time when the regeneration of the ion exchange resin 1 is completed, the circulation pump 10 is in a stopped state and the control valve 11 is in a closed state.

After regeneration of the ion exchange resin 1 in the water softener, the controller 13 monitors the supply state of raw water to the water softener based on the detection signal from the flow switch 16. . Then, based on the detection signal from the flow switch 16, when it is detected that raw water is supplied from the raw water line 5 to the water softener,
The controller 13 operates the circulation pump 10 and switches the control valve 11 to an open state. Here, the circulation pump 10 is controlled to continue to operate until the ion exchange resin 1 is regenerated next time or until the operation of the water softener is ended.

Then, as in the first embodiment, a part of the soft water flowing from the resin cylinder 2 into the soft water line 6 flows into the raw water line 5 through the circulation line 8 as circulating water, The raw water in the line 5 flows into the resin cylinder 2. Therefore, the flow rate of the raw water in the resin tube 2 increases with respect to the flow rate of the raw water from the raw water line 5, and the flow rate of the raw water in the resin tube 2 increases. Therefore, the raw water having the increased flow velocity causes the entire ion-exchange resin 1 in the resin cylinder 2 to quickly move upward, so that the fixed bed 7 in which the rearrangement phenomenon does not occur is formed.

After that, when the raw water is supplied to the water softener to continue the water flow into the resin cylinder 2, the raw water into the resin cylinder 2 does not undergo the rearrangement phenomenon. It passes through the fixed bed 7 and is taken out from the soft water line 6 as high-purity soft water from which hardness has been sufficiently removed.

Next, the case where the supply of raw water to the water softener is stopped will be described. In this case, the controller 13
Detects that the supply of raw water to the water softener has been stopped based on the detection signal from the flow switch 16, and closes the control valve 11. Then, since the soft water from the resin cylinder 2 is stopped from being supplied to the equipment using the soft water, it circulates as circulating water between the resin cylinder 2 and the circulation line 8 and from the lower portion of the resin cylinder 2. It flows in as raw water. At this time, since the flow rate of the circulating water is set to the predetermined flow rate, the state in which the fixed bed 7 is formed is maintained even while the supply of the raw water to the water softener is stopped.

When the supply of raw water to the water softener is started again, the controller 13 opens the control valve 11 based on the detection signal from the flow switch 16. Then, as described above, the circulating water flows into the resin cylinder 2 together with the raw water from the raw water line 5.

Next, a case where the flow rate of the raw water supplied to the water softener is reduced while the raw water is being supplied to the water softener will be described. In this case, the resin tube 2
The flow rate of raw water newly supplied to the inside is small. However, as described above, the circulating water from the circulating line 8 constantly flows into the resin cylinder 2 at the predetermined flow rate, and the fixed bed 7 is formed by the entire circulating water by the ion exchange resin 1. The maintained state is maintained.

As described above, in the water softener of the second embodiment, after the first passage of water after the regeneration, the circulating water is always allowed to flow into the resin cylinder 2 at the predetermined flow rate. The fixed bed 7 can be formed quickly, and the state in which the fixed bed 7 is formed can be maintained regardless of the state of supply of raw water to the water softener. Therefore, even when the intermittent operation of the water softener is performed, it is possible to prevent the purity of the soft water from decreasing.
Further, in the water softener of the second embodiment, the operation of the circulation pump 10 is started at the first passage of water after the regeneration, and thereafter, the control valve is changed depending on whether raw water is supplied to the water softener. Since the opening and closing control of 11 is performed, the configuration of the controller 13 can be simplified.

By the way, in the water softeners of the first embodiment and the second embodiment, the rearrangement phenomenon is caused by maintaining the fixed bed 7 formed by the circulating water from the circulating line 8. This is a configuration for preventing the occurrence of. However, even in the water softener of each of the embodiments, when the operation of the water softener is stopped in accordance with the stop of the operation of the device using soft water, or when the ion exchange resin 1 is regenerated, When stopping the supply of raw water and the operation of the circulation pump 10
There is). In this case, since the flow of raw water in the resin cylinder 2 is stopped, the ion-exchange resin 1 forming the fixed bed 7 drops to the lower part of the resin cylinder 2 all at once, and the high-speed upward flow is generated. However, the rearrangement phenomenon may occur.

Therefore, a structure for preventing the deterioration of the purity of the soft water more reliably by preventing the occurrence of the rearrangement phenomenon at the end of the water flow will be described. In particular,
In the water softener of the first embodiment, a movement adjusting means for adjusting the fall of the ion exchange resin 1 at the time of stopping water flow is provided in the resin cylinder 2, and this configuration is shown as a third embodiment. This will be described with reference to FIGS. 5 is a sectional explanatory view showing a schematic configuration of a third embodiment of the present invention, FIG. 6 is an enlarged explanatory view of a sectional view taken along line VI-VI of FIG. 5, and FIG. FIG. 9 is a cross-sectional explanatory view showing a steady water flow state in the example, and FIG. 8 is a cross-sectional explanatory view showing a state at the end of water flow in the third embodiment. 5 to 8 showing the third embodiment, the same reference numerals as those in FIGS. 1 to 3 showing the first embodiment represent the same members, and detailed description thereof will be omitted.

In the third embodiment, in addition to the circulation line 8, as the movement adjusting means for the ion exchange resin 1, the resin cylinder 2 is in a direction intersecting with the water flow direction of the raw water, that is, in the radial direction. A partition plate (hereinafter, referred to as a “horizontal partition plate”) 17 for partitioning into 2 is provided in the resin cylinder 2. As shown in FIGS. 5 and 6, the horizontal partition plate 17 has a plurality of through holes 18, 1 for allowing the ion exchange resin 1 to pass therethrough.
, And has a function of decreasing the falling speed by dropping the ion exchange resin 1 through the through holes 18 at the end of water flow. The horizontal partition plate 17 is located in the fixed floor 7 when water is passed through the resin cylinder 2.

Here, in this third embodiment, the horizontal partition plate 17 is arranged substantially horizontally between the filters 3 and 4 at a height position of about 1/4 from the lower filter 4 side. There is. In addition, in the horizontal partition plate 17, the diameter of each through hole 18 is about 3 mm. Further, the number of each of the through holes 18 is set so that the opening ratio of the horizontal partition plate 17 (the ratio of the area of each of the through holes 18 to the horizontal partition plate 17) is about 30%. .

Next, the operation of the water softener of the third embodiment will be described. First, in the water softener, when raw water to the water softener is started, the operation of the circulation pump 10 and the switching of the control valve 11 to the open state are performed as described above. Then, in addition to the raw water from the raw water line 5, the circulating water from the circulation line 8 flows into the resin cylinder 2, so that the flow velocity of the raw water in the resin cylinder 2 increases. Therefore, the whole of the ion exchange resin 1 in the resin cylinder 2 quickly moves upward, and the fixed bed 7 in which the rearrangement phenomenon does not occur is formed (see FIG. 7). After that, the operation of the circulation pump 10 is controlled according to the flow rate of the raw water supplied to the water softener, and the flow rate of the raw water in the resin cylinder 2 is maintained at the predetermined flow rate or higher.
As described above, the state in which the fixed bed 7 is formed is maintained regardless of the state of supply of raw water to the water softener.

Next, when the supply of raw water to the water softener is stopped and the circulation pump 10 is stopped, the flow of raw water in the resin cylinder 2 is stopped. Then, the ion exchange resin 1 begins to drop toward the lower filter 4. At this time, when the ion-exchange resin 1 below the horizontal partition plate 17 falls at once, it becomes the high-speed upward flow, and tries to flow toward the upper part of the resin cylinder 2. However, the flow velocity of the high-speed upward flow is suppressed by the horizontal partition plate 17. Therefore, the horizontal partition plate 17
The ion exchange resin 1 below the horizontal partition plate 1
It is not conveyed above 7, and falls toward the lower filter 4 as it is. Therefore, the ion-exchange resin 1 drops onto the lower filter 4 without being agitated, so that it is possible to prevent the passed-through resin and the unbroken resin from being mixed with each other.

On the other hand, since the ion exchange resin 1 above the horizontal partition plate 17 drops through the through holes 18, the falling speed decreases when passing through the through holes 18, The horizontal partition plate 17 slowly drops toward the lower filter 4. Therefore, it is possible to prevent the high-speed upward flow from being generated due to the ion-exchange resin 1 dropping all at once, and to prevent the ion-exchange resin 1 from being stirred by the high-speed upward flow. Here, since the ion exchange resin 1 above the horizontal partition plate 17 drops more slowly than the ion exchange resin 1 below the horizontal partition plate 17, the ion exchange resin 1 below the horizontal partition plate 17 is described. Will fall on the layer formed by the drop (see FIG. 8).

As a result, in the water softener, at the end of water flow, the resin under the fixed bed 7 and the fixed bed 7 are broken through.
It is possible to prevent the unbreakable resin in the upper part from being mixed with each other. Then, when water is passed again, the fixed bed 7 in which the resin that has passed through and the resin that has not passed through are not mixed is formed in a short time, so that the occurrence of hardness leakage can be prevented.

As described above, in the water softener according to the third embodiment, the circulation line 8 and the horizontal partition plate 17 are provided so that the water flow is started at the start of the intermittent operation and at the end of the water flow. The occurrence of the rearrangement phenomenon can be effectively prevented. Therefore, it is possible to reliably prevent the purity of the soft water from decreasing.

Further, in the above description, each of the embodiments is an embodiment to which the present invention is applied to the water softener in which the inside of the resin cylinder 2 is formed as one section. The same can be applied to a water softener having a structure in which the inside of the resin cylinder 2 is divided into a plurality of parts in the raw water flow direction. That is, also in the water softener having a configuration in which the inside of the resin cylinder 2 is divided into a plurality of portions in the axial direction, the circulation line 8 may be provided as in each of the above-described embodiments, and further, as in the third embodiment, The circulation line 8 and the horizontal partition plate 17 can be provided.

Next, a fourth embodiment in which a circulation line 8 and a horizontal partition plate 17 are provided in a water softener having a structure in which the inside of the resin cylinder 2 is partitioned in the water flow direction of raw water, that is, in the axial direction, will be described. This will be described with reference to FIGS. FIG. 9 is a cross-sectional explanatory view showing a schematic configuration of the fourth embodiment of the present invention, and FIG. 10 is an enlarged explanatory view of a cross-section taken along line XX of FIG. In FIGS. 9 and 10 showing the fourth embodiment, the same reference numerals as those in FIGS. 1 to 8 showing the respective embodiments show the same members, and detailed description thereof will be given.

First, the basic structure of the water softener of the fourth embodiment will be described. The water softener includes a vertical partition plate 19 for partitioning the resin cylinder 2 in the axial direction inside the resin cylinder 2. The vertical partition plate 19 has a cross-shaped cross section, and in the resin cylinder 2, the upper filter 3 is formed.
Between the lower filter 4 and the lower filter 4. Therefore, the inside of the resin cylinder 2 is separated by the vertical partition plate 19.
The flow passage cross-sectional area of each division is about 1/4 of the flow passage cross-sectional area of the entire resin cylinder 2. Thus, the reason why the inside of the resin cylinder 2 is partitioned in the axial direction is that the smaller the flow passage cross-sectional area in the resin cylinder 2 is, the more the occurrence of the rearrangement phenomenon at the end of water flow can be suppressed. Is. Therefore, when the inner diameter of the resin cylinder 2 is large and the flow passage cross-sectional area is large, the inside of the resin cylinder 2 is partitioned and the flow passage cross-sectional area of each partition is reduced as described above, so that the water passage is achieved. It is possible to suppress the occurrence of the rearrangement phenomenon at the end.

Here, the height of the vertical partition plate 19 is set to a position lower than the housing height of the ion exchange resin 1. The reason why the height of the vertical partition plate 19 is set in this way is to equalize the amount of the ion exchange resin 1 that falls into each of the compartments at the end of water flow.

Next, the characteristic parts of the water softener according to the fourth embodiment, that is, the circulation line 8 and the horizontal partition plate 17, will be described. First, the circulation line 8 has the same structure as that of each of the embodiments. Next, the horizontal partition plate 17 has the same configuration as that of the third embodiment, and the filters 3,
4 is arranged substantially horizontally from the lower filter 4 side at a height position of about 1/4. here,
In the fourth embodiment, the vertical partition plate 19 is divided into an upper vertical partition plate 20 and a lower vertical partition plate 21, and the upper vertical partition plate 20 and the lower vertical partition plate 21 are separated from each other. It is provided in the resin cylinder 2 with the horizontal partition plate 17 sandwiched therebetween.

Now, in the water softener of the fourth embodiment, as described above, the resin cylinder 2 is formed by the vertical partition plate.
By forming four compartments having a small flow passage cross-sectional area, the occurrence of the rearrangement phenomenon at the end of water flow is suppressed. Moreover, by providing the horizontal partition plate 17 in the resin cylinder 2, the dropping speed in each of the compartments can be reduced as in the third embodiment. Therefore, in the fourth embodiment, even when the resin cylinder 2 has a large inner diameter and a large flow passage cross-sectional area, the rearrangement phenomenon at the end of water passage is reliably prevented and the soft water is prevented. It is possible to prevent a decrease in purity.

[0092]

According to the present invention, since the fixed bed of the treating material can be formed promptly at the start of water flow, the rearrangement phenomenon of the fixed bed can be prevented from occurring. The decrease can be prevented. Further, according to the present invention, the occurrence of the rearrangement phenomenon can be prevented by maintaining the state in which the fixed bed is formed even when the removal of the treated water from the water treatment device is stopped. Therefore, the purity of the treated water can be prevented from decreasing.

[Brief description of drawings]

FIG. 1 is an explanatory sectional view showing a schematic configuration of a first embodiment of the present invention.

FIG. 2 is a cross-sectional explanatory view showing a state at the start of water flow into the resin cylinder in the first embodiment.

FIG. 3 is a cross-sectional explanatory view showing a water flowing state into the resin cylinder in the first embodiment.

FIG. 4 is a sectional explanatory view showing a schematic configuration of a second embodiment of the present invention.

FIG. 5 is an explanatory sectional view showing a schematic configuration of a third embodiment of the present invention.

6 is an enlarged explanatory view of a cross section taken along line VI-VI of FIG.

FIG. 7 is an explanatory sectional view showing a steady water flow state in the third embodiment.

FIG. 8 is a cross-sectional explanatory view showing a state at the end of water passage in the third embodiment.

FIG. 9 is a sectional explanatory view showing a schematic configuration of a fourth embodiment of the present invention.

10 is an enlarged explanatory view of a cross section taken along line XX of FIG.

[Explanation of symbols]

1 Ion exchange resin (treatment material) 2 Resin cylinder (accommodation part) 5 Raw water line (raw water inflow part) 6 Soft water line (treated water extraction part) 7 fixed bed 8 circulation lines (water flow adjustment means) 17 Horizontal partition plate (movement adjusting means) 18 through holes

Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) B01D 29/36 AC (72) Inventor Shinji Matsutomo 7 Horie-cho, Matsuyama-shi, Ehime Miura Industrial Co., Ltd. (72) Invention Employee Kakuda Expansion 7 Horie Town, Matsuyama City, Ehime Prefecture Miura Industrial Co., Ltd. (72) Inventor Hayato Watanabe 7 Horie Town, Matsuyama City, Ehime Prefecture Miura Industrial Co., Ltd. F Term (reference) 4D024 AA01 AA03 BA02 BA07 BB01 BC01 CA02 CA05 CA07 DA03 DA05 4D025 AA01 AA02 AB19 BA07 BA22 BB02 BB07 BB15 BB20 CA06 CA10

Claims (8)

[Claims] 1. A water treatment device for reforming raw water through a treatment material (1), comprising a water passage adjusting means (8) for adjusting the flow rate of raw water in a housing portion (2) of the treatment material (1) at the start of water passage. A water treatment device characterized by being provided. 2. In a water treatment device for reforming raw water through the treatment material 1, when the removal of the treated water from the water treatment device is stopped, the treatment material 1 is introduced into the accommodation part 2 of the treatment material 1. A water treatment device comprising water flow adjusting means for continuing water flow. 3. A water treatment device for reforming raw water through the treatment material 1, wherein the flow rate of the raw water in the accommodation portion 2 of the treatment material 1 is adjusted at the start of water passage, and the water treatment device is also provided. A water treatment apparatus comprising water flow adjusting means for continuing water flow into the storage section 2 when the removal of the treated water from the water is stopped. 4. The water flow adjusting means is a circulation line 8 connected between the raw water inflow part 5 and the treated water takeout part 6 in the accommodating part 2, according to any one of claims 1 to 3. The water treatment device according to item 1. 5. The water treatment apparatus according to claim 1, further comprising a movement adjusting means for moving the treatment material 1 in the housing portion 2. 6. The partitioning body 17 comprising a through hole 18 for allowing the treatment material 1 to pass therethrough, and partitioning the storage portion 2 in a direction intersecting with a raw water passage direction. The water treatment device according to claim 5, wherein the water treatment device is a water treatment device. 7. The container 2 is partitioned in the water flow direction of the raw water, according to any one of claims 1 to 6.
The water treatment device according to item. 8. The treatment material 1 is an ion exchange resin or a filter material, according to any one of claims 1 to 7.
The water treatment device according to item.