JPH09294980A - Water treatment apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To wash a drain line with raw water having a large flow rate per unit time and high pressure by implementing a priming process to extrude air and to make regeneration liquid flow down smoothly by natural dropping in a water treatment apparatus such as a hard water softening apparatus. SOLUTION: In a water passage process, when a faucet is opened by a user, raw water in a raw water tank 5 flows into a resin cylinder 1 through a raw water line 8, and the raw water is passed as an ascending flow by a water supply pump 9. Next, a priming process is implemented in advance of a regeneration process, and a drain line 18 is filled with raw water. Raw water is passed through the raw water line 8 and a drain line 18, air in a flow passage is extracted, the line 18 is filled with raw water, the channels from the resin cylinder 1 to a check valve G2 through the raw water line 8 and the resin cylinder 1 and from the resin cylinder 1 to a check valve G3 are filled with raw water. In this way, regeneration liquid is made to flow down smoothly in the regeneration process.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-passing step for passing raw water through a treatment container containing a treatment material for treatment, a regeneration step for circulating a regeneration liquid in the treatment vessel to regenerate the treatment material, The present invention relates to a water treatment device such as a water softening device that performs an extrusion step of pushing out a residual regeneration liquid during a regeneration step.

[0002]

DISCLOSURE OF INVENTION Problems to be Solved by the Invention In this type of water softening device discharge device, the flow passage during the water passage process, the regeneration passage during the regeneration process, and the regeneration passage during the extrusion process are opened and closed. This is performed by changing the open / closed states of a plurality of valve bodies inserted in the road. When these valve elements are integrated as one switching valve device and assembled, and are arranged at a relatively high position such as above the processing container, the drain line for discharging the regenerant liquid from the processing container is straight. There is a case where the pipe is not piped but is piped toward the switching valve device provided relatively above after exiting the processing container and then piped downward again from the switching valve device. In such a case, if air enters the drain line, the head pressure difference cannot be secured, and there is a possibility that the regenerant does not flow down during the regenerating step.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and includes a raw water tank, a raw water line, a treatment container containing a treatment material, and a treated water line in this order. Alternatively, a water flow passage in which a water supply pump is inserted in the treated water line, a regeneration passage including a regenerant tank, a regenerant line, a treatment container, and a drain line in sequence, a raw water tank,
The processing container includes an extrusion flow path that sequentially includes a raw water flow-down line, a processing container, and a drain line, and a plurality of valve bodies that are inserted into the flow path to open and close each of the flow paths. And a switching valve device disposed on the side of the upper part of the processing container, and when the water passage step of driving the water supply pump to circulate raw water through the water passage is performed by a predetermined amount, the regeneration passage In the water treatment device for controlling the return to the water passing step by sequentially performing the regeneration step of circulating the regenerant liquid and the pushing step of circulating the raw water through the extrusion channel by natural fall, the raw water tank, the raw water line, and the regeneration channel are controlled. A priming flow path that includes a drain line in sequence and has a water supply pump inserted in the raw water line, and a priming system that executes a priming process that drives the water supply pump to circulate the raw water through the priming flow path before the regeneration process. And it is characterized in water treatment and means.

According to the above means, since the priming process is executed before the regeneration process, the air in the drain line is pushed out, the drain line is filled with raw water, and during the regeneration process, the regenerant liquid drops naturally. Run down to.

[0005]

BEST MODE FOR CARRYING OUT THE INVENTION As an embodiment of the present invention, a raw water tank, a raw water line, a treatment container containing a treatment material, and a treated water line are sequentially included, and a water supply pump is inserted in the raw water line or the treated water line. A water flow passage, a regeneration flow passage including a regenerant tank, a regenerant line, a treatment container, and a drain line in sequence, an extrusion flow passage including a raw water tank, a raw water downflow line, a treatment container, and a drain line, and the passage. A switching valve device that includes a plurality of valve bodies that open and close each of the flow paths by inserting and changing the open / closed states, and a switching valve device that is arranged laterally above the processing container or above the processing container. When a predetermined amount of water-passing step of driving the water supply pump to flow raw water through the water-flowing channel is performed, a regeneration step of causing the regenerating liquid to flow through the regeneration channel and causing natural water to flow through the extrusion channel by natural fall Push In a water treatment device that controls the water supply process and returns to the water flow process, a raw water tank, a raw water line, and a drain line of a regeneration flow path are sequentially included, and a priming flow path in which a water supply pump is inserted in the raw water line, A water treatment device is provided with a priming control means for driving the water supply pump to perform a priming step of circulating raw water through the priming channel before the regeneration step.

This embodiment will be described in detail below. In this form, the raw water line is a line through which the raw water flows, and the regenerant line is a line through which the regenerant liquid flows.
The treated water line means a line through which the treated raw water treated with the treated material flows, and the drain line means a line for discharging the liquid to be drained in the treatment container. The water flow passage includes a raw water tank, a treatment container, and a treated water line in that order. The raw water tank is a means for temporarily storing raw water, and the treatment container is a means for accommodating a treatment material therein. The raw water line is a supply line that supplies the raw water from the raw water tank to the processing container. The end of the raw water line on the side of the processing container is usually connected to the upper part of the processing container, but it may be connected so that the tip is inserted into the processing material in the processing container. The treated water line is a supply path that is connected to the treatment vessel and supplies the treated water generated by circulating the raw water in the treatment vessel. The connection position of the treated water line to the treatment vessel should be such that raw water flows through the treated material and then flows out from the treated water line.
It is a position where the treatment material is sandwiched with respect to the tip of the raw water line, and usually the lower portion of the treatment container, but not limited to this. A water supply pump for sucking raw water and sending it under pressure is inserted in the water passage. This insertion position is the raw water line between the raw water tank and the treatment container or the treated water line on the outlet side of the treatment container. In the water passing step, the water supply pump is driven to cause the raw water in the raw water tank to flow through the water passage. After a predetermined amount of this water passing step is executed, the regeneration step is executed. The predetermined amount means that the execution time of the water passing step, the flow rate of treated water, the flow rate of raw water, or the like reaches a predetermined value.

The regeneration flow passage includes a regeneration tank, a regeneration liquid line,
A processing vessel and a drain line are sequentially included. This regenerant tank is a means for storing a regenerant that regenerates the processing material in the processing container. The regenerant line is a supply path that supplies the regenerant from the regenerant tank to the processing container. The drain line is a discharge path that is connected to the processing container and discharges the regeneration liquid that has finished the regeneration action. The flow of the regenerant liquid to the processing container is generated by a gravity falling gravity method in which the regenerant liquid tank is provided above the processing container. If it is necessary to dilute the concentration of the regenerated liquid, connect the raw water flow line where the raw water flows down from the raw water tank by spontaneous fall before the treatment container of the regenerated liquid line or before the treatment material in the treatment container. Then, the regenerant liquid in the regenerant line and the raw water in the raw water flow-down line are mixed and diluted, and then supplied to the processing container. When a regenerant liquid adjusted to an appropriate concentration is stored in the regenerant liquid tank, no means for this mixing is necessary. During the regeneration step, a regeneration liquid or a mixed liquid of the regeneration liquid and raw water is passed through the regeneration passage.

The extrusion flow path includes a raw water tank, a raw water downflow line, a processing container, and a drain line in this order. The raw water tank is positioned above the processing container, and the raw water is gravity-falled to bring the raw water tank through the raw water downflow line. Circulate with container-drain line. The raw water flow line of the extrusion flow path is a free fall type, and the raw water line of the water flow path is basically a separate line for forced water flow by a pump, but both lines are basically separate lines, but it is possible to share a part Is. During the extrusion process, the raw water in the raw water tank is allowed to flow by gravity to the extrusion passage.

[0009] The priming water flow passage includes a raw water tank, a raw water line,
The drain line of the regeneration channel is sequentially included, and a water supply pump is inserted in the raw water line. The priming water flow passage can share the water supply pump of the water passage and a part of the raw water line so that the water supply pump can be inserted in the raw water line of the priming water flow passage. Further, the raw water line of the priming water passage may or may not share a part of the treated water line. During the priming process, the water supply pump is driven to cause the raw water in the raw water tank to flow through the priming channel. The priming process is a process in which the air in the drain line of the regeneration channel is evacuated and filled with water to facilitate the natural fall of the regeneration liquid during the regeneration process.

[0010]

EXAMPLES The embodiments of the invention described above are embodied in a domestic water softening device in which the treatment material is an ion exchange resin and the regenerant is saline. An embodiment applied to this water softening device will be described below with reference to the drawings.

1 to 5 are schematic explanatory views showing the structure of a water softening (softening water) apparatus embodying the present invention, showing a water passing step, a priming step, a regenerating step, an extruding step, and a washing step, respectively. . Reference numeral 1 denotes a resin cylinder (cylindrical resin processing container), in which a predetermined amount of silica stone 2 as a resin holding member is accommodated in the lower portion of the resin cylinder 1.
A predetermined amount of ion-exchange resin (treatment material) 4 is housed between it and a wire net 3 as a resin holding member installed in the upper part of the. A raw water tank 5 and a salt water tank (regeneration liquid tank) 6 are provided in parallel above the resin tube 1, and a raw water inlet 7 provided at the bottom of the resin tube 1 and a lower portion of the raw water tank 5 are connected by a raw water line 8. In the raw water line 8, a water supply pump 9, a first check valve G1 for blocking the flow in the direction of the water supply pump 9, a flow switch (water flow detection means) 10, a pressure switch (pressure detection means) 11, and a first valve V1. Inserted sequentially from the upstream side. A soft water outlet 12 is provided in the upper part of the resin cylinder 1, a soft water line (treated water line) 13 is connected to the soft water outlet 12, and a second valve V2 and an accumulator 14 are inserted in the middle. Then, the downstream side of the second valve V2 of the soft water line 13, the pressure switch 11 of the raw water line 8 and the first valve V1 are connected by a bypass line 15 so as to be branched from the raw water line 8, and in the middle thereof. The third valve V3 is inserted in. The bypass line 15 is for avoiding water cutoff during the regeneration of the ion exchange resin 3 in the resin cylinder 1. The accumulator 14 is used for the soft water line 13
The number of times of starting and stopping the water supply pump 9 due to leakage of choro from a faucet (not shown), outflow of choro, etc. is reduced.

Further, the lower part of the salt water tank 6 and the soft water line 1
2 is connected to a position close to the soft water outlet 12 by a salt water downflow line (regeneration liquid line) 16, and this salt water downflow line 1
Second check valve G for preventing flow in the direction of salt water tank 6 in 6
2 and the fourth valve V4 are sequentially inserted from the upstream side. Then, the downstream side of the fourth valve V4 of the salt water downflow line 16 and the downstream side end of the raw water downflow line 17 connected to the lower part of the raw water tank 5 are connected in front of the resin cylinder 1. A third check valve G3 that blocks the flow in the direction of the raw water tank 5 is inserted in the raw water flow line 17. Then, the drain line 18 is connected to the raw water inlet portion 7 provided in the lower portion of the resin cylinder 1, and the fifth valve V5 is inserted in the middle thereof.

The raw water tank 5 includes a water level control device 19
(For example, a ball tap system) is provided, and a raw water supply line 20 for supplying raw water such as tap water is connected by the water level control device 19. Net 2 in the salt water tank 6
1 is provided, the salt 22 is placed on the net 21, and the lower portion of the net 21 of the salt water tank 6 is divided into a first portion 6A and a second portion 6B by a partition body 23. . The first portion 5A and the raw water tank 5 are connected by a replenishing water line 24 so that the raw water is supplied to the salt water tank 6. Reference numeral G4 is a fourth check valve that is inserted into the makeup water line 24 and blocks the flow in the direction of the raw water tank 5. The partition wall 23 is a member for preventing the raw water supplied from the raw water tank 5 and the already formed saturated salt water from being mixed in the lower portion of the salt water tank 6 during the regeneration process. In addition, the salt water downflow line 16 is connected to the bottom of the second portion 6B. The salt 22 on the net 21 is dissolved in the raw water supplied from the raw water tank 5 to generate saturated salt water. The raw water tank 5 and the salt water tank 6 are respectively the raw water overflow pipe 2
5. A salt water overflow pipe 26 is provided. In the above description of the embodiments, a line means a flow path or a path, and more specifically, a pipeline.

In the above structure, the water passage, the priming passage, the regeneration passage, the extrusion passage, and the washing passage corresponding to each water passage step, priming step, regeneration step, extrusion step, and washing step are arranged. explain. The water flow passage includes a raw water tank 5-raw water line 8-resin cylinder 1-treated water line 13 in that order. This water flow passage includes the water supply pump 9, the first check valve G1, the first valve V1, and the second valve V2. The priming water flow path sequentially includes a raw water tank 5-a part of the raw water line 8 (including the water supply pump 9) and a drain line 18. In this priming passage, there are a first check valve G1 and a first valve V.
1, the fifth valve V5 is included. The regeneration channel is made by mixing salt water (regeneration liquid) having a high concentration with raw water that dilutes it into a resin cylinder 1
Of the raw water tank 5-the raw water flow line 17 and the salt water tank 6-the salt water flow-down line 16-a part of the soft water line 13-the resin cylinder 1-the drain line 18 in order. Including line. In this regeneration flow path, the second check valve G2, the fourth valve V4, the fifth valve V5, the third
A check valve G3 is included. The extrusion channel is the raw water tank 5
The raw water flow line 17-the resin cylinder 1-the drain line 18 are sequentially included. The extrusion flow path includes the third check valve G3 and the fifth valve V5. The washing channel is a raw water tank 5-raw water line (a part of the raw water line 8-the bypass line 15-a part of the soft water line 13 and is a raw water line in the sense that raw water flows during the washing process) -resin The cylinder 1 and the drain line 18 are sequentially included. As described above, the raw water line of the cleaning flow path shares the portion of the bypass line 15 where the third valve V3 is inserted and the portion of the soft water line 13 where the second valve V2 is inserted. This is for simplicity. A first check valve G1, a third valve V3, and
The second valve V2 and the fifth valve V5 are included.

The first valves V1 to V5 included in each of the above flow paths
The valve V5 is a switching valve device VA as shown in FIGS. 6 and 11.
Is integrally formed and is provided on the side of the upper portion of the resin cylinder 1. The switching valve device VA may be provided above the resin cylinder 1. That is, the five first valve seats J1 to J1 are attached to the valve box BX.
A fifth valve seat J5 is provided, and the first valve element B corresponding to each valve seat is provided.
1st-5th valve body B5 is provided, 1st cam body K1-5th cam body K5 which respond | corresponds each valve body normally energized by the 1st spring body Z1-5th spring body Z2 in the closing direction, these cams First operating rod L1 to fifth operating rod L that are driven by the body to operate the valve body
Opening and closing is controlled by 5. 1st valve seat J1 and 1st valve body B of FIG.
2 corresponds to the first valve V1 in FIG. 1, and the second valve seat J2 and the second valve seat J2
The valve body B2 and the second valve V2 are the Nth (N is 1 to
5) The valve seat JN and the Nth valve body BN correspond to the Nth valve VN. This switching valve device VA controls the open / closed state of each valve to open / close the water flow passage, the priming flow passage, the regeneration flow passage, the extrusion flow passage, and the washing flow passage according to the different open / closed states. To do. The cam bodies K1 to K5 are integrally connected by a rotary shaft 30, and the rotary shaft 30 is connected by a valve drive motor (may be referred to as a cam drive motor) 31 to
It is configured to be rotationally driven via the fourth gears GR1, GR2, GR3, GR4. The rotary shaft 30 and the valve drive motor 31 constitute a drive body for the cam body.

Referring to FIG. 12, reference numeral PS is a position detecting means (process position detecting means) as a means for detecting the position of the driving body, and is a rotation provided so as to rotate in association with the drive shaft 30. By detecting the rotational position of the body 32, the rotational position of the driving body and thus the process position can be detected. The rotating body 32 includes a base portion 33 and a cylindrical standing portion 34 which is erected on the periphery thereof.
And a gear GR4 is formed on the outer periphery of the base portion side of the upright portion 34, and notch-shaped first detection holes H1 to H5 at the tip side portion for detecting each process position. Is formed. Each of the first detection hole H1 to the fifth detection hole H5 is, as shown in FIG. 15 in which the standing portion 34 is developed, the lower edge of the rotation direction Y (the edge of the side previously detected by the sensor SN). ) Are water passing process position (origin) P1 and priming process position P, respectively
2, the forming position is set so as to be the regeneration process position P3, the extrusion process position P4, and the cleaning process position P5. Although these detection holes are notches, they are not limited thereto. The interval between the detection holes, that is, the process position interval, is represented by the time of the rotating body 32 rotating at a predetermined constant speed, and the interval between P1 and P2 is T1.
(For example, 147 seconds), T2 between P2 and P3 (for example, 18
3 seconds), T3 (for example, 128 seconds) between P3 and P4, P4
Between P5 and P5 is T4 (for example, 55 seconds), and between P5 and P1 is T5
The intervals are different from each other (for example, 110 seconds). Then, the auxiliary detection hole HS is formed adjacent to the lower side of the first detection hole H1 in the rotation direction Y, and the detection of the water passage step position P1 which is the origin is performed by detecting the washing step position P5 and the water passage step position P.
Between 1 and 1, it can be detected from PX.
The cam bodies K1 to K5, the rotary shaft 30, the rotary body 32,
The bearings R1 and R2 are integrally molded of synthetic resin, and the drive box KX is connected to the valve box BX made of synthetic resin.
It is rotatably accommodated in the bearings R1 and R2.

The position detecting means PS is provided so as to detect the detection holes H1 to H5 that move with the rotation of the rotating body 32, and the light source PH arranged so as to sandwich the standing portion 34 and light emitted from this light source PH. And a photo sensor SN for detecting the presence or absence of the emitted light.

The valve drive motor 31 for controlling the open / closed states of the water supply pump 9 and the switching valve device VA is a flow switch according to a processing procedure stored in advance by a control device C including a microcomputer as shown in FIG. 1
0, the pressure switch 11, the photo sensor SN, the water cut sensor DS, etc. are inputted and controlled. Water break sensor D
S detects the predetermined low water level in the raw water tank 5,
It is provided in the raw water tank 5 or in a water level detection cylinder (not shown) communicating with the raw water tank 5, and detects water interruption by water level detection by a pressure sensor and water level detection by an electrode rod. When the flow switch 10 detects a predetermined first set flow rate, it outputs a water flow presence signal (water feed pump drive request signal), and when it detects a second set flow rate which is a predetermined value smaller than the first set flow rate, it outputs no water flow signal ( Water supply pump stop request signal), the pressure switch 11 outputs a water supply pump drive request signal when the pressure is lower than the first set pressure, and the water supply is detected when the pressure is higher than the second set pressure which is higher than the first set pressure by a predetermined value. Outputs a pump stop request signal.

The control by the control unit C is roughly divided into an initial setting control CA, a water flow control CB, a regeneration control CC and a cleaning control CD as shown in FIG. The initial setting control CA is a control that is performed when a reset switch (not shown) is operated, such as a reset switch (not shown). The cleaning process SJ and the origin finding process SG (the switching valve device VA is the origin position of the water passing process position P).
1) control). The water flow control CB is a switching valve device V
A is a control for performing the water passing process ST at the water passing process position P1. The regeneration control CC is a control for regenerating the ion exchange resin when the water passing step ST is performed for a predetermined number of days and when the current time is equal to the regeneration time. The priming step SY, the regeneration step SS, the extrusion step SO, the cleaning step The process SJ and the origin setting process SO are sequentially performed. Each priming process, regeneration process, extrusion process, and cleaning process include detection of each process position and execution of the process (execution of the process means execution of operations such as priming and regeneration). The cleaning control CD is control for performing the cleaning step SJ when the flow switch 10 satisfies a predetermined condition such as no flow detection for a predetermined time (for example, 24 hours or more).

In addition, the present embodiment also has the configuration described below. That is, the control device C is a battery (not shown).
It is equipped with, and can continue the clock function even during a power failure. Further, it is provided with setting means for setting the current time, the reproduction time, and the reproduction cycle (cycle for performing reproduction control). Even when these are not set, the default values (initial setting values) of the reproduction time and the reproduction cycle are set. If a power failure occurs at the playback time, playback control is performed when the power is restored, and if a power failure occurs during playback, playback is continued after the power failure is restored. Further, a manual regeneration switch (not shown) is provided, and when this switch is operated, regeneration control is forcibly executed. Further, the control device C is the water supply pump 9
The flow switch 10 detects the absence of water, and the pressure switch 11 is the second
A means for determining whether or not the state of detecting the pressure equal to or lower than the set value continues for a certain time or more, and when the continuation is determined, it is determined that any one of the water supply pump 9, the flow switch 10, and the pressure switch 11 is abnormal. And means for displaying an abnormality based on this determination.

The above-mentioned respective controls in this embodiment will be described below. First, the water flow control CB will be described. FIG.
Also, referring to FIG. 6, it is assumed that the switching valve device VA is controlled to the water passing process position P1 by the initial setting control CA. This position control rotationally drives the rotating shaft 30 that controls the open / closed state of the switching valve device VA as described later, and detects the rotational position of the rotating body 32 that rotates in conjunction with the rotation of the rotating shaft 30.
It is performed by detecting. As shown in FIGS. 1 and 6, the open / closed state of the switching valve device VA at the water passage step position P1 is as follows: first valve V1: open, second valve V2: open, third valve V3:
The valve is closed, the fourth valve V4 is closed, and the fifth valve V5 is closed. Then, when the user opens the faucet (water tap), the raw water in the raw water tank 5 flows into the resin cylinder 1 through the raw water line 8. As a result, the water supply pump 9 is driven by the signal indicating the presence of water flow from the flow switch 10 or the detection signal below the predetermined pressure of the pressure switch 11, and the raw water is passed from the lower portion of the resin cylinder 1 as an upward flow. By this water flow, the raw water is softened by the action of the ion exchange resin 4, and is supplied to the faucet through the soft water line 13 from the soft water outlet 12 provided at the upper portion of the resin cylinder 1 as soft water (treated water). In this water passing step, the outlet 12 of the resin cylinder 1 is blocked by the blocking action of the third check valve G3.
The flow of treated water from the raw water tank 5 to the raw water tank 5 is blocked.

Next, the regeneration control CC for regenerating the ion exchange resin 3 will be described. In this regeneration control, the priming process SJ shown in FIGS. 2 and 7 is performed for a predetermined time (for example, several seconds to several tens of seconds) before entering the regeneration process SS. This will be described. Since the switching valve device VA is provided above the resin cylinder 1 or laterally above the resin cylinder 1, the drain valve 18 is not straightly piped downward, but the switching valve is installed from the lower part of the resin cylinder 1. Fifth of device VA
The valve V5 is piped upward, then inverted and then piped downward. Therefore, when air flows into the drain line 18, the head pressure difference cannot be taken, and the raw water and the salt water may not flow smoothly through the drain line 18 during the regeneration process SS. The priming process S
Y is a step of filling the passage through which raw water or salt water flows in the regeneration step SS, particularly the drain line 18 with raw water, in order to eliminate such a problem. This priming process position P2
The open / closed state of the switching valve device VA is the first valve V1: open, the second valve V2: closed, the third valve V3: open, the fourth valve V4: open, the fifth valve.
Valve V5: Opened. As a result, the raw water in the raw water tank 5 flows into the resin cylinder 1, so that a signal indicating the presence of water flow is output from the flow switch 10 or the pressure switch 11
The water supply pump 9 is driven by the output of the detection signal below the predetermined pressure. The raw water flows through the raw water line 8-the drain line 18, the air in the flow passage is evacuated and filled with the raw water, and the raw water line 8-through the resin pipe 1 and between the resin pipe 1 and the second check valve G2. And the flow path from the resin cylinder 1 to the third check valve G3 is filled with raw water. After the priming process SY is executed for a predetermined time, a regeneration process SS with salt water
Move to

The salt water regenerating step SS will be described.
The open / close state of the switching valve device VA at the process position P3 is, as shown in FIGS. 3 and 8, a first valve V1: closed and a second valve V2:
The valve is closed, the third valve V3 is open, the fourth valve V4 is open, and the fifth valve V5 is open. As a result, the saturated salt water in the salt water tank 6 flows down by gravity through the salt water flow line 16. On the other hand, the raw water in the raw water tank 5 flows down through the raw water flow line 17, and saturated salt water and raw water are mixed at the soft water outlet 12 which is an inlet of the regenerant during the regeneration process. Then, the salt water becomes a predetermined concentration (about 10%) and flows down from the upper part of the resin cylinder 1 to regenerate the ion exchange resin 4. The salt water after regeneration is discharged to the outside of the system through the drain line 18. During this regeneration process,
Since the third valve V3 is open, when the user at home opens the faucet (not shown) connected to the tip of the soft water line 13,
A water flow is generated and the water supply pump 9 is driven by the operation of the flow switch 10. As a result, since the raw water is supplied through the raw water tank 5-a part of the raw water line 8-the bypass line 15-a part of the soft water line 13, the use of the water is not hindered. Then, this salt water regeneration process is executed for a predetermined time (for example, about 15 minutes). That is, when a predetermined amount of salt water is flowed down and the regeneration of the ion exchange resin 4 is completed, the process proceeds to the next extrusion step SO.

The extrusion step SO will be described. The open / closed state of the switching valve device VA at the process position P4 is as shown in FIG.
And as shown in FIG. 9, the first valve V1: closed, the second valve V2:
The valve is closed, the third valve V3 is open, the fourth valve V4 is closed, and the fifth valve V5 is open. As a result, the raw water in the raw water tank 5 naturally falls through the raw water flow-down line 17 and flows into the resin cylinder 1, and the salt remaining in the ion exchange resin 4 is pushed out and washed with water. The water after the water washing is discharged to the outside of the system through the drain line 18. This extrusion step SO is executed for a predetermined time (for example, about 120 minutes), a predetermined amount of raw water is caused to flow down, salt is extruded, and regeneration is completed. After the completion of the regeneration, the origination step SG is performed after the cleaning step SJ described later.

The replenishment of water from the raw water tank 5 to the salt water tank 6 during the regeneration process will be described with reference to FIG. That is, during the regeneration process, the saturated salt water that has already been generated and stored before the regeneration process flows down through the salt water flow-down line 16. With this flow-down, the raw water from the raw water tank 5 flows through the replenishment water line 24 into the first salt water tank 6 inside. It flows into the portion 6A, goes over the upper end of the partition wall 23, and flows into the second portion 6B.
In this way, as the saturated salt water flows down, the raw water is replenished as the saturated salt water level decreases, but due to the difference in specific gravity, the raw water layer with a low concentration is located above the saturated salt water layer. The saturated salt water is allowed to flow down while maintaining the target.
The water level control in the salt water tank 6 by this replenishment is performed by the action of the water level control device 19 of the raw water tank 5, and the net 2
It flows into a predetermined water level LW above 1, and salt is dissolved in the raw water to generate and store saturated salt water at the time of regeneration. The saturated salt water is finally obtained after a lapse of some time (for example, 12 hours) after the termination of the regeneration control CC.

Next, the cleaning step SJ of the cleaning control CD will be described. The open / closed state of the switching valve device VA at the process position P5 is the first valve V1: as shown in FIGS.
Closed, second valve V2: open, third valve V3: open, fourth valve V4:
The valve is closed and the fifth valve V5 is opened. As a result, raw water tank 5
The water supply pump 9 is driven by the operation of the flow switch 10 or the pressure switch 11 that accompanies the raw water flowing down through the raw water line 8. The raw water in the raw water tank 5 flows through a cleaning flow path composed of a part of the raw water line 8-the bypass line 15-a part of the soft water line 13-the resin cylinder 1-the drain line 18 by the suction and discharge actions of the water supply pump 9. . In this way, the amount of raw water supplied to the resin cylinder 1 per unit time by the action of the water supply pump 9 becomes larger (for example, about 15 times) than in the extrusion process, and the residual water in the resin cylinder 1 rapidly becomes system. It is discharged to the outside. This cleaning process is performed for about 5 minutes, for example.

When the cleaning step SJ is completed, the origin setting step SG is executed. In the origin setting step SG, the switching valve device VA is controlled to the water passing step position (original point) P1 to be in a water passing standby state. The water flow process is executed by the user opening the tap in the water flow standby state.

Next, a method for detecting the process position of the cleaning process SJ and the origin setting process SG will be described below. Extrusion process S
When shifting from O to the next cleaning step SJ, the control device C
Drives the valve drive motor 31. As a result, the rotating shaft 30 and the rotating body 32 start rotating at a constant speed, and the position detecting means PS starts detecting the cleaning process position P5.

This detection is performed as follows. That is, the photosensor SN is in a predetermined range of time T41 to T42.
OFF (shielding) -ON (detection hole) -OFF (shielding)
-The second 0N when the ON (detection hole) pattern is detected
The position is determined as the cleaning process position P5. The distance between the extrusion process position P4 and the cleaning process position P5 is T4 (5
5 seconds), and when the fourth detection hole H4 and the fifth detection hole H5 sequentially pass through the photo sensor SN, the photo sensor SN turns OFF-ON-O within a time slightly exceeding T4.
FF-ON is detected. Therefore, T41 is set to a time slightly shorter than T4 (for example, 45 seconds), and T42 is set to a time slightly longer than T4 (for example, 66 seconds). With this setting, the intervals T1, T2, T3, T4, T
Since 5 is set, it is OFF at T41 to T42.
Detecting an ON-OFF-ON pattern does not exist with other combinations of detection holes.

Next, the detection of the position P1 by the origin setting step SG is performed by the same method as that of the cleaning step position detection, using two adjacent detection holes, the first detection hole H1 and the auxiliary detection hole HS. That is, the photo sensor SN is T01 (45
Within seconds, OFF (shielding) -ON (detection hole) -OFF
When the (shielding) -ON (detection hole) pattern is detected, the second 0N position is determined as the origin (water passing step) position P1.

The position detection of the priming process, the regenerating process, the pushing process, and the cleaning process in the regeneration control CB is such that the current process position is known. When the photo sensor SN detects it, it is recognized as the next process position.

Next, another embodiment of the present invention will be described with reference to FIG. This embodiment is different from the first embodiment in FIG. 1 in that the water supply pump 9 is provided in the soft water line 13 on the outlet side of the resin cylinder 1, and the water softening line 13 is branched from the outlet side of the water supply pump 9. Raw water line 5 reaching the top of the resin tube 1
0, and the sixth valve V6 is installed in the raw water line 50,
The raw water tank 5 to the raw water line 8 is used as a flow path in the cleaning process.
Part-bypass line 15 (including third valve V3) -part of soft water line 13 (including water supply pump 9) -raw water line 50-resin cylinder 1-drain line 18 . In addition, the flow path in the priming process is the same as the cleaning flow path. A pressure switch 11 and a flow switch 10 are provided on the outlet side of the pump 9. In FIG. 16, the same components as those in FIGS. 1 to 5 are designated by the same reference numerals and the description thereof will be omitted.

In this embodiment, the first valve V1 to the fifth valve of the switching valve device VA in the water passing step, the regeneration step and the pushing step.
The open / closed state of the valve V5 is the same as that in FIGS. 1 to 5, and the sixth valve V6 is closed in each step. The open / closed state of the switching valve device during the cleaning process is as shown in FIG.
The second valve V2 is closed, the third valve V3 is open, the fourth valve V4 is closed, the fifth valve V5 is open, and the sixth valve V6 is open. As a result, the water supply pump 9 is driven by the operation of the flow switch 10 or the pressure switch 11 as the raw water in the raw water tank 5 flows down the raw water line 8. The raw water in the raw water tank 5 is sucked and discharged by the water supply pump 9 to cause the raw water line 8 to flow.
Part-Bypass line 15-Part of soft water line 13-
The raw water line 50-resin cylinder 1-drain line 18 flows through a washing flow path. In this way, the cleaning process is performed as in the first embodiment. Further, the open / close states of the switching valve device during the priming process are the first valve V1: closed, the second valve V2: closed, the third valve V3: open, the fourth valve V4: open, the fifth valve V5: open, the sixth valve. Valve V
6: Opened.

[0034]

According to the present invention configured as described above,
By executing the priming process, the drain line can be washed and the air can be pushed out with the raw water having a large flow rate per unit time and a high water pressure, and the regenerant can smoothly flow down due to the natural fall. In addition, it is possible to realize the gathering and integration of the switching valve devices and to enlarge the arrangement position range of the switching valve devices.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a water treatment device showing a water passing step according to an embodiment of the present invention.

FIG. 2 is a configuration diagram of a water treatment device showing a priming process of the embodiment of the present invention.

FIG. 3 is a configuration diagram of a water treatment device showing a regeneration step of the same embodiment of the present invention.

FIG. 4 is a configuration diagram of a water treatment device showing an extrusion step of the same embodiment of the present invention.

FIG. 5 is a configuration diagram of a water treatment device showing a cleaning step of the same embodiment of the present invention.

FIG. 6 is a diagram showing an open / closed state of the switching valve device in the water passing step according to the embodiment of the present invention.

FIG. 7 is a diagram showing an open / closed state of the switching valve device in the priming process of the embodiment of the present invention.

FIG. 8 is a diagram showing an open / closed state of the switching valve device in the regeneration process of the embodiment of the present invention.

FIG. 9 is a diagram showing an open / closed state of the switching valve device in the pushing step of the same embodiment of the present invention.

FIG. 10 is a diagram showing an open / closed state of the switching valve device in the cleaning step of the same embodiment of the present invention.

FIG. 11 is a sectional view showing the main part of the same embodiment of the present invention.

FIG. 12 is a perspective view of an essential part of the embodiment of the present invention.

FIG. 13 is a diagram showing an electrical schematic configuration of the embodiment of the present invention.

FIG. 14 is a flowchart showing a control procedure by the control device of the embodiment of the present invention.

FIG. 15 is an exploded view of the essential parts showing the positional relationship of the detection holes in the rotating body of the embodiment of the present invention.

FIG. 16 is a configuration diagram of a water treatment device showing a cleaning step according to another embodiment of the present invention.

[Explanation of symbols]

 1 Resin Cylinder 4 Ion Exchange Resin 5 Raw Water Tank 6 Salt Water Tank 8 Raw Water Line 9 Water Supply Pump 13 Soft Water Line 16 Salt Water Down Line 17 Raw Water Down Line 18 Drain Line VA Switching Valve Device V1, V2, V3, V4, V5 Valve

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yoji Oda 7 Horie-cho, Matsuyama-shi, Ehime Prefecture Miura Kogyo Co., Ltd. (72) Inventor Naofumi Ida 7 Horie-cho, Matsuyama-shi, Ehime Miura Kogyo Co., Ltd.

Claims (1)

[Claims] 1. A raw water tank, a raw water line, a treatment container containing a treatment material, and a treated water line in this order, and a raw water line or a water flow passage in which a feed pump is inserted in the treated water line, a regenerant tank, and a reclaimed liquid. A regeneration flow path that sequentially includes a line, a processing vessel, and a drain line; an extrusion flow path that sequentially includes a raw water tank, a raw water flow-down line, a processing vessel, and a drain line; A switching valve device that includes a plurality of valve bodies that open and close each flow path and that is disposed above the processing container or laterally above the processing container, and drives the water supply pump to the water flow path. When a predetermined amount of the water passing step for circulating the raw water is executed, a regenerating step for circulating the regenerant liquid through the regeneration channel and an extruding step for circulating the raw water through the extrusion channel by natural fall are sequentially performed, and the process returns to the water passing step. Control In the water treatment device for controlling, a raw water tank, a raw water line, and a drain line of a regeneration flow channel are sequentially included, and a priming flow channel in which a water supply pump is inserted in the raw water line and the water supply pump are driven before the regeneration step. And a priming control means for executing a priming step of circulating raw water through the priming channel.