JP3147775B2 - Water treatment equipment - Google Patents

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 in which raw water is passed through a processing vessel containing a processing material for treatment, a regeneration step in which a regenerating solution is circulated in the processing vessel to regenerate the processing material, The present invention relates to a water treatment apparatus such as a water softening apparatus for performing an extrusion step of extruding a residual regenerating solution during a regeneration step.

[0002]

7. INVENTION It is an object of this type Water Softener <br/>, through water flow path of the water passing through step, opening of reproduction channels of the playback channel and the extrusion step during the regeneration step, closing Is performed by making the open / close states of a plurality of valve bodies inserted in the flow path different. The switching of the open / close state includes a plurality of cam bodies that act on these valve bodies to control opening and closing, a driving body that drives these cam bodies to positions corresponding to the respective flow paths, and controlling the driving bodies. Therefore, it is conceivable that the control is performed by a controller that sequentially switches the water passing step, the regeneration step, the extrusion step, and the cleaning step. In such a device, when the control device is reset, the control device needs to perform control to position the driving body at the water passage step position as an initial position. When such control at the time of resetting is performed, the process temporarily passes through the regeneration process, and shifts to the water flow process without sufficiently performing the extrusion process. Then, a problem is assumed that the salt water is mixed with the treatment liquid (soft water) and supplied when the water passing step is started.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to supply raw water to a processing vessel containing a processing material and a water flow path including a processing water line in order. A water process, a regenerating step of flowing a regenerating liquid through a regenerating flow path sequentially including a processing vessel and a drain line, an extruding step of flowing raw water through an extruding flow path sequentially including a processing vessel and a drain line, and a unit time of the raw water. In a water treatment apparatus in which the flow rate per contact is increased from that in the extrusion step and the washing step is performed by switching between a washing step in which the treating vessel and the drain line are sequentially passed through the washing flow path, the opening / closing state of the water treatment apparatus is different. A plurality of valve bodies for opening and closing the flow paths, a plurality of cam bodies acting on the valve bodies to control opening and closing, and moving these cam bodies to positions corresponding to the respective flow paths. Drive A moving body, and a control device for controlling the driving body to sequentially switch the water passing step, the regeneration step, the pushing step, and the cleaning step, and the control apparatus cleans the driving body when reset. The water treatment apparatus is provided with a reset control unit that is positioned at the process position, executes the cleaning process for a predetermined time, and then is positioned at the water passing process position.

According to the above-described means, when the control device is reset, the control device first moves the driving body to the cleaning position and executes the cleaning process. In this cleaning step, the flow rate of raw water per unit time supplied to the processing vessel is increased as compared with the extrusion step by natural fall, and the residual liquid in the processing vessel is quickly discharged in a short time. After this washing step,
Since the process shifts to the water passing step, the mixture of the regenerating liquid is prevented at the start of the water passing step.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention include a water supply step of flowing raw water through a processing vessel containing a processing material and a water flow path sequentially including a processing water line; A regenerating step of circulating the raw water through a regenerating flow path that sequentially includes lines, an extruding step of circulating the raw water through an extruding flow path that sequentially includes a treatment vessel and a drain line, and increasing the flow rate of the raw water per unit time from the time of the extruding step. In the water treatment apparatus, the washing process is performed by switching between the washing process and the washing process in which the washing process is sequentially passed through the washing flow path including the treatment vessel and the drain line.
A plurality of valve bodies that are inserted into the flow path to open and close the flow paths by changing the open / close state, a plurality of cam bodies that act on these valve bodies to control the opening and closing, and these cams A driving unit for driving the body to a position corresponding to each of the flow paths; and a control device for controlling the driving unit to sequentially switch the water passing step, the regeneration step, the extrusion step, and the washing step, and The control device is a water treatment device including a reset control unit that, when reset, positions the driving body at a cleaning process position, performs a cleaning process for a predetermined time, and then positions the driving body at a water flow process position.

This embodiment will be described in detail below. In this embodiment, the water treatment apparatus includes the following three embodiments. That is, the raw water is once stored in the raw water tank from the raw water supply line, and the stored raw water is supplied to the processing vessel by the action of the water supply pump during the water passing step, and the raw water in the raw water tank is naturally dropped into the processing vessel during the extrusion step. Supply form (first form: tank / water supply tank interposed form)
Once the raw water from the raw water supply line is once stored in the raw water tank and the raw water supply line is directly connected to the treatment vessel,
Raw water is supplied directly to the treatment vessel from the raw water supply line during the water passing step, and raw water in the raw water tank is supplied to the treatment vessel by gravity during the extrusion step (second form: direct pressure / tank coexistence form); This is a mode (third mode: direct pressure mode) in which raw water is directly supplied from a raw water supply line to a treatment vessel in both a water passing step and an extrusion step without providing a tank. In these embodiments, the raw water line is a line through which the raw water flows, the regenerating liquid line is a line through which the regenerating liquid flows, the treated water line is a line through which the treated raw water treated by the treatment material flows, and The line means a line for discharging the liquid to be drained in the processing container.

The case of the first embodiment will be described.
In this embodiment, the water flow passage includes a raw water tank, a treatment vessel, and a treated water line sequentially. The raw water tank is a unit for temporarily storing raw water, and the processing container is a unit for storing a processing material inside. The raw water line is a supply path for supplying raw water from a raw water tank to a treatment vessel. The end of the raw water line on the processing vessel side is usually connected to the upper part of the processing vessel, but it can also be connected so that the tip is inserted into the processing material in the processing vessel. The treated water line is a supply path that is connected to the treatment vessel and supplies treated water generated by flowing raw water through the treatment vessel. The connection position of the treated water line to the treatment vessel is a position where the treated material is sandwiched with respect to the tip of the raw water line so that the raw water flows out of the treated water line after flowing the treated material. , But is not limited to this. A water supply pump that sucks raw water and feeds it under pressure is inserted into the water passage. This insertion position is the raw water line between the raw water tank and the processing vessel,
Alternatively, it is a treated water line on the outlet side of the treatment container. During the water passing step, the water supply pump is driven to circulate the raw water in the raw water tank through the water flow path.

The regeneration flow path includes a regeneration liquid line, a processing container, and a drain line in order. The regenerating liquid line of the regenerating flow path includes a regenerating liquid tank as necessary. This regenerating liquid tank is a means for storing a regenerating liquid for regenerating the processing material in the processing container. The regenerating liquid line is a supply path for supplying the regenerating liquid in the regenerating liquid tank to the processing container. The drain line is connected to the processing container and is a discharge path for discharging the regenerating solution after the regenerating operation. The flow of the regenerating solution into the processing vessel during the regenerating process is generated by gravity flow by providing a regenerating solution tank above the processing vessel, or by generating a flow of raw water and generating a jet pump by this flow. Let it. In the case of using a jet pump, the raw water and the regenerating liquid are supplied to the processing vessel in a mixed state. If it is necessary to dilute the concentration of the regenerating solution, connect the raw water flow down line where the raw water flows down from the raw water tank by natural fall before the processing container of the regenerating solution line or before the processing material in the processing container. Then, the regenerating liquid in the regenerating liquid line and the raw water in the raw water flowing down line are mixed and diluted, and then supplied to the processing vessel. In the case where the regenerating solution whose concentration has been adjusted to an appropriate concentration is stored in the regenerating solution tank, the means for this mixing is unnecessary.

The extruding flow path includes a raw water tank, a raw water flowing down line, a processing vessel, and a drain line. The raw water tank is positioned above the processing vessel, and the raw water is naturally dropped by gravity to the raw water tank-raw water flowing down line-processing. Distribute with container-drain line. The raw water flow down line of the extrusion flow path is a natural fall type, and the raw water line of the water flow path is basically separate lines for forced water flow by the pump, but it is possible to share some parts It is. During the extrusion step, the raw water in the raw water tank is allowed to flow through the extrusion flow path by natural fall.

The washing flow path includes a raw water tank, a raw water line, a processing vessel, and a drain line in order, and a water supply pump is inserted into a raw water line between the raw water tank and the processing vessel. The washing flow path can be inserted into the raw water line of the washing flow path by sharing a part of the feed water pump and the raw water line of the flowing water flow path. Further, the raw water line of the washing flow path may or may not share a part of the treated water line. It is desirable that the drain line of the washing flow path shares the drain line of the extrusion flow path, but it is also possible to provide the drain line separately. During the washing process, the water supply pump is driven to flow the raw water in the raw water tank through the washing flow path. The flow rate of the raw water per unit time in the washing step is larger than that in the pushing step due to the action of the water supply pump.

In the case of the second mode, the water flow passage is configured to sequentially include a raw water supply line, a raw water line, a processing vessel containing a processing material, and a processed water line. The processing vessel and the drain line are sequentially included. The extrusion flow path is configured to sequentially include the raw water tank, the raw water line, the processing vessel, and the drain line. The cleaning flow path is the raw water supply line, the raw water line, the processing vessel, and the drain line. Are sequentially included. In this embodiment, there is a case where a pump means is provided on the upstream side of the raw water supply line (outside of the water treatment apparatus) and a case where it is not provided, and in any case, the water pressure of the raw water line is approximately equal to the tap water pressure. . In this embodiment, during the cleaning step, the raw water having a high water pressure is supplied directly to the processing vessel from the raw water supply line, and during the extrusion step, the raw water having a low water pressure is supplied by the raw water tank or by natural fall, The flow rate of the raw water per unit time in the washing step is larger than that in the extrusion step.

In the case of the third mode, the water flow passage is configured to sequentially include a raw water supply line, a raw water line, a processing container containing a processing material, and a processed water line. The processing vessel and the drain line are sequentially included, the extrusion flow path is configured to sequentially include the raw water supply line, the raw water line, the processing vessel, and the drain line, and the washing flow path is the raw water supply line, the raw water line, the processing vessel, and the drain. It is configured to include lines sequentially. In this embodiment, the flow resistance of the washing flow path and the pushing flow path is adjusted, for example, a flow resistance member such as an orifice is interposed in an appropriate position of the pushing flow path, and the flow path is not interposed in the washing flow path.
The flow rate of raw water per unit time in the washing step is made larger than that in the extrusion step.

In addition, a water flow channel, a regeneration channel, an extrusion channel,
A plurality of valve bodies are interposed in the washing flow path, and these valve bodies open and close each flow path by making the open / close state different. The plurality of cam bodies act on these valve bodies to control opening and closing, and are controlled to positions corresponding to the respective flow paths by a driving body. The number of cam bodies is preferably provided corresponding to the number of valve bodies. The driving body includes a driving shaft that integrally connects a plurality of cam bodies and rotationally drives them, and a motor that rotates the driving shaft. The control device controls the position of the driving body by inputting a signal from position detecting means for directly or indirectly detecting the position of the driving body. Specifically, the opening and closing control of the valve body is performed by controlling the motor to control the rotational position of the drive shaft. In addition to the control of the position of the driving body,
The water supply pump is controlled, and the water supply step, the regeneration step, the extrusion step, and the cleaning step are sequentially switched and performed. The control device preferably comprises a microcomputer and peripheral elements such as a memory, and controls the driving body and the water supply pump according to a predetermined and stored processing procedure. The control device is configured to be reset. When the reset is performed, the control device positions the driving body at a position corresponding to the cleaning process (the cleaning process position), and after performing the cleaning process for a predetermined time, And reset control means for controlling the position of the water passage step. How to reset the control,
That is, the resetting means includes a means for resetting with a reset switch attached to the control device, a means for resetting when the control device itself determines that the power supply is first turned on, and a battery which is an auxiliary power supply for the control device. When the battery runs out or when the battery is replaced or charged, it is determined by itself and reset is performed. The reset control means includes:
Reset detecting means, means for controlling the position of the driving body at the time of reset detection to the cleaning step, means for executing the cleaning step for a predetermined time, and means for controlling the position of the driving body to the water-flowing step position after the execution. These means are configured as part of the control procedure of the control device. For this position control, a position detecting means for detecting the position of the driving body is provided, and a signal from this position detecting means is used. The position detecting means preferably detects the position of the rotating body that rotates in conjunction with the drive shaft, and detects the rotating position of the rotating body to detect the rotating position of the driving body, and thus the rotating position of the cam body, and thus the valve. The open / closed state of the body (open / closed pattern) and the process position are detected. The position control for positioning the driving body in the cleaning step includes controlling the movement of the driving body by rotating the driving body, detecting the position of the driving body using position detecting means, and controlling the stopping of the driving body.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiment of the invention described above is embodied in a household water softening apparatus using a treatment material as an ion exchange resin and a regenerating solution as a saline solution. An embodiment applied to the water softening apparatus will be described below with reference to the drawings.

FIGS. 1 to 5 are schematic explanatory views showing the structure of a water softening (soft water) apparatus embodying the present invention, showing a water passing step, a priming step, a regeneration step, an extrusion step, and a washing step, respectively. . Reference numeral 1 denotes a resin cylinder (cylindrical resin processing container). A predetermined amount of silica 2 as a resin holding member is accommodated in a lower portion of the resin cylinder 1.
A predetermined amount of ion-exchange resin (treatment material) 4 is accommodated between a wire mesh 3 serving as a resin holding member and installed above. A raw water tank 5 and a salt water tank (regenerated liquid tank) 6 are provided in parallel above the resin cylinder 1, and a raw water inlet 7 provided at a lower part of the resin cylinder 1 and a lower part 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 preventing a flow in the direction of the water supply pump 9, a flow switch (water flow detecting means) 10, a pressure switch (pressure detecting means) 11, and a first valve V1 are provided. They are inserted sequentially from the upstream side. A soft water outlet 12 is provided in the upper part of the resin tube 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 bypass line 15 is connected between the downstream side of the second valve V2 of the soft water line 13 and the pressure switch 11 of the raw water line 8 and the first valve V1 so as to branch off from the raw water line 8, and on the way. , The third valve V3 is inserted. The bypass line 15 avoids water interruption during regeneration of the ion exchange resin 3 in the resin cylinder 1. Incidentally, the accumulator 14 is connected to the soft water line 13.
To reduce the number of times the water supply pump 9 starts and stops due to leaks from the faucet (not shown) and discharge from the tap.

Further, the lower part of the salt water tank 6 and the soft water line 1
2 is connected to a position adjacent to the soft water outlet 12 by a salt water flowing down line (regenerating liquid line) 16.
Check valve G for preventing the flow in the direction of the salt water tank 6 during the second check valve G
The second and fourth valves V4 are sequentially inserted from the upstream side. Then, the downstream side of the fourth valve V <b> 4 of the salt water falling line 16 and the downstream end of the raw water falling line 17 connected to the lower part of the raw water tank 5 are connected before the resin cylinder 1. A third check valve G3 for preventing the flow in the raw water tank 5 direction is inserted in the raw water flow down line 17. Then, a drain line 18 is connected to the raw water inlet section 7 provided at the lower part of the resin tube 1, and a fifth valve V5 is inserted in the middle thereof.

The raw water tank 5 has a water level controller 19
(For example , a ball tap method), and a raw water supply line 20 for supplying raw water such as tap water by the water level control device 19 is connected. The salt water tank 6 each other in the net 21 is provided, as well as placing the salt 22 on the net 21, the net 21 lower portion of the water tank 6 bulkhead
23 divides into a first portion 6A and a second portion 6B. The first portion 6 < / b> A and the raw water tank 5 are connected by a water supplement line 24 so that raw water is supplied to the salt water tank 6. Reference numeral G4 denotes a fourth check valve that blocks the flow in the direction of the raw water tank 5 inserted into the water supply line 24 .
The partition wall 23 is mixed with raw water supplied from the raw water tank 5 already.
During the regeneration process, the saturated brine that has been generated is in the salt water tank 6.
This is a member for preventing mixing at the lower part of the frame.
In addition, the salt water falling line 16 is connected to the bottom of the second portion 6B. The salt 22 on the net 21 is dissolved in raw water supplied from the raw water tank 5 to generate saturated brine. The raw water tank 5 and the salt water tank 6 are each a 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 pipe.

In the above configuration, the water flow passage, the priming flow passage, the regeneration flow passage, the extrusion flow passage, and the washing flow passage corresponding to each of the water passage process, the priming process, the regeneration process, the extrusion process, and the washing process are arranged. explain. The flow passage includes a raw water tank 5-a raw water line 8-a resin cylinder 1-a treated water line 13 in order. The water flow path includes a water supply pump 9, a first check valve G1, a first valve V1, and a second valve V2. The priming flow path includes the raw water tank 5-a part of the raw water line 8 (including the water supply pump 9)-the drain line 18 in order. The priming flow path includes a first check valve G1 and a first valve V
1, a fifth valve V5 is included. The regeneration channel mixes a highly concentrated salt solution (regeneration solution) with raw water for diluting the same, and the resin cylinder 1
Of the salt water tank 6-a part of the soft water line 13-part of the soft water line 13-the resin cylinder 1-the drain line 18, and the raw water tank 5-the raw water falling line 17. Including lines. In the regeneration passage, 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
-Raw water flow down line 17-Resin cylinder 1-Drain line 18 are sequentially included. The pushing flow path includes a third check valve G3 and a fifth valve V5. The washing channel is a raw water tank 5-a raw water line (a part of the raw water line 8-a bypass line 15-a part of the soft water line 13, which is a raw water line in the sense that raw water flows in the washing step)-resin The cylinder 1-drain line 18 is sequentially included. As described above, the raw water line of the washing flow path shares the portion of the bypass line 15 interposed with the third valve V3 and the portion of the soft water line 13 interposed with the second valve V2. This is for simplicity. A first check valve G1, a third valve V3,
A second valve V2 and a 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.
As a single unit. That is, five first valve seats J1 to fifth valve seat J5 are provided in the valve box BX, and each of these valve seats is provided.
A first valve body B1~ fifth valve B5 corresponding to J1~J5 provided, the corresponding valve bodies B1~B5 urged always closed direction by the first spring member Z1~ fifth spring member Z5 the first cam member K1~ fifth cam K5 provided, each of these cam K1~K
5 is operated by the first operating rod L1 to the fifth operating rod L5 for operating the respective valve elements B1 to B5 . The first valve seat J1 and the first valve body B1 in FIGS. 6 and 11 correspond to the first valve V1 in FIG. 1, and the second valve seat J2 and the second valve body B2 correspond to the second valve V2. , N-th (n is 1 to 5) valve seats Jn and
The n-valve element Bn corresponds to the n-th valve Vn . The switching valve device VA controls the open / close state of each of the valves V1 to V5 to open a water flow passage, a priming flow passage, a regeneration flow passage, a push-out flow passage, and a washing flow passage in accordance with the different open / close states. , Close. Each cam body K1~K5, as shown in FIG. 11, the rotary shaft 30 is integrally connected, the rotary shaft 30 is a valve driving motor (may be referred to as a cam drive motor) 3
1, the first to fourth gears GR1, GR2, GR3, G
It is configured to be driven to rotate via R4. The rotating shaft 30 and the valve driving motor 31 are provided with the cam bodies K1 to K
5 is a driving body.

Referring to FIG. 12, reference numeral PS denotes a position detecting means (process position detecting means) for detecting the position of the driving body, and a rotation provided so as to rotate in conjunction with the driving shaft 30. By detecting the rotational position of the body 32, the rotational position of the driving body, and thus the process position, is detected. The rotating body 32 includes a base portion 33 and a cylindrical standing portion 34 erected on the periphery thereof.
A gear GR4 is formed on the outer periphery of a portion of the standing portion 34 on the base portion side, and a notch-shaped first detection hole H1 to a fifth detection hole H5 for detecting each process position are formed on the front end portion. Is formed. As shown in FIG. 16 in which the upright portions 34 are developed, the first detection holes H1 to the fifth detection holes H5 are edges on the lower side in the rotation direction Y (edges on the side detected first by the sensor SN). Are the water flow process position (origin) P1 and the priming process position P, respectively.
2. The formation position is set so as to be the regeneration process position P3, the extrusion process position P4, and the cleaning process position P5. These detection holes are notched, but are not limited thereto. The formation interval of each detection hole, that is, the process position interval, is represented by the time of the rotating body 32 rotating at a predetermined constant speed.
(For example, 147 seconds), the interval between P2 and P3 is T2 (for example, 18 seconds).
3 seconds), T3 (for example, 128 seconds) between P3 and P4, P4
T4 (for example, 55 seconds) between P5 and P5, and T5 between P5 and P1
(For example, 110 seconds). An 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 process position P1, which is the origin, is performed by the cleaning process position P5 and the water passage process position P1 as described later. Between PX and PX. The cam bodies K1 to K5, the rotating shaft 30,
The rotating body 32 and the bearing portions R1 and R2 are integrally formed of synthetic resin, and are rotatably housed by the bearing portions R1 and R2 in a drive box KX connected to a valve box BX made of synthetic resin.

The position detecting means PS is provided so as to detect the detection holes H1 to H5 which move with the rotation of the rotating body 32, and is provided with a light source P disposed between the standing portions 34 of the rotating body.
H and a photosensor SN for detecting the presence or absence of light emitted from the light source PH.

The valve drive motor 31 for controlling the open / close state of the water supply pump 9 and the switching valve device VA is controlled by a control device C including a microcomputer as shown in FIG. 1
0, a signal from a pressure switch 11, a photo sensor SN, a reset switch RE, and the like are input and controlled. The flow switch 10 outputs a water flow presence signal (water supply pump drive request signal) when detecting a predetermined first set flow rate, and detects a water flow non-signal (when a second set flow rate smaller than the first set flow rate is detected). The pressure switch 11 outputs a feed water pump drive request signal when the pressure is equal to or lower than the first set pressure, and detects a water pressure equal to or higher than a second set pressure higher than the first set pressure by a predetermined value. Outputs a pump stop request signal.

As shown in FIG. 14, the control by the control device C includes an initial setting control CA, a water flow control CB, and a regeneration control CC.
And a cleaning control CD. Initial setting control CA is,
The control is performed when the reset is performed , such as by operating the reset switch RE.
G ( Water passing process position P1 where switching valve device VA is the origin position)
Control). An example of the control procedure of the initial setting control CA is as shown in FIG. Flow control CB
Is control for performing the water passage process ST with the switching valve device VA as the water passage process position P1. The regeneration control CC includes the water passage process ST
Is performed for a predetermined number of days, and when the current time becomes equal to the regeneration time, the ion exchange resin 4 is regenerated . The priming step SY, the regeneration step SS, the extrusion step SO, the cleaning step SJ, and the origin setting step SG are performed. Perform sequentially. Priming process
The SY may not be required depending on the structure of the device. Each priming step, the regeneration step, extrusion step, the washing step comprises the execution of the detection and process of each step position (priming from the execution of the process, it means the execution of the operation of the reproduction or the like). Note that the cleaning step SJ in the normal (normal) regeneration control CC is not always necessary, and the original cleaning step SJ is passed.
The process may shift to the spotting step SG . The cleaning control CD is a control for performing the cleaning step SJ when the flow switch 10 satisfies a predetermined condition such as not detecting a flow for a predetermined time or more (for example, 24 hours or more).

The above-described embodiment also has the following configuration. That is, the control device C includes a battery (not shown) and can continue the clock function even during a power failure.
Further, a setting unit for setting a current time, a reproduction time, and a reproduction cycle (a cycle for performing the reproduction control) is provided. Even when these are not set, 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 at the time of recovery from power failure, and if power failure occurs during playback, playback is continued after recovery from power failure. Further, a manual regeneration switch (not shown) is provided, and when this switch is operated, regeneration control is forcibly executed.

Hereinafter, each control described above in this embodiment will be described. First, the water flow control CB will be described. FIG.
Referring to FIG. 6 and FIG. 6, it is assumed that the switching valve device VA is controlled to the water passage process position P1 by the initial setting control CA. This process position control is performed by the switching valve device V as described later.
A rotary shaft 30 for controlling the open / close state of A is driven to rotate, and the rotational position of a rotating body 32 that rotates in conjunction with the rotation is detected.
The detection is performed by the output means PS. Closed state of the switching valve device VA in water passing process position P1, as shown in FIGS. 1 and 6, the first valve V1: Open, second valve V2: Open,
The third valve V3 is closed, the fourth valve V4 is closed, and the fifth valve V5 is closed. When the user opens the faucet (water tap), the raw water in the raw water tank 5 flows into the resin cylinder 1 via the raw water line 8. This allows the water flow from the flow switch 10 to be
The water supply pump 9 is driven by a signal or a detection signal of a predetermined pressure or less of the pressure switch 11, and the raw water flows through the lower part of the resin cylinder 1 as an upward flow. The water passing raw water is softened by the action of the ion exchange resin 4, as soft water (treated water) is supplied to the faucet through the soft water line 13 from the soft water outlet 12 provided at the top of the resin cylinder 1, through The water process ST is performed. In this water flow step ST , the soft water outlet of the resin cylinder 1 is formed by the blocking action of the third check valve G3.
The flow of treated water from 12 to the raw water tank 5 is blocked.

Next, a regeneration control CC for regenerating the ion exchange resin 4 will be described. In the regeneration control CC , before entering the regeneration step SS, the calls shown in FIGS.
Since the water process SY is performed for a predetermined time (for example , about several seconds to several tens of seconds ), this will be described. Switching valve device VA is,
Since the drain line 18 is provided above the resin cylinder 1 or on the side of the upper part of the resin cylinder 1, the drain line 18 is not piped straight downward but from the lower part of the resin cylinder 1 to the fifth of the switching valve device VA. It is configured to be piped upward to the valve V5 and then inverted and then piped downward. For this reason, when air flows into the drain line 18, a difference in head pressure cannot be obtained, and raw water and salt water may not flow smoothly through the drain line 18 during the regeneration step SS. The priming step SY is a step of filling the route through which raw water or salt water circulates, particularly the drain line 18, with the raw water in the regeneration step SS in order to eliminate such problems. The open / close state of the switching valve device VA at the priming process position P2 is determined by the first valve V
1: Open, 2nd valve V2: Closed, 3rd valve V3: Open, 4th valve V
4: Open, fifth valve V5: Open. As a result, the raw water of the raw water tank 5 flows into the resin tube 1, that signal flow Yes from the flow switch 10 is outputted
Ri, or by a predetermined pressure or less of the detection signal of the pressure switch 11 is outputted, the water supply pump 9 is driven. The raw water circulates through the raw water line 8-the drain line 18, bleeds the air in this flow passage, fills it with raw water, and, via the raw water line 8-the resin cylinder 1, from the resin cylinder 1 to the second check valve G 2. 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 has been performed for a predetermined time, the process proceeds to a regeneration process SS using salt water.

The salt water regeneration step SS will be described.
The open / closed state of the switching valve device VA at the process position P3 is, as shown in FIGS. 3 and 8, the first valve V1: closed, the second valve V2:
Closed, third valve V3: open, fourth valve V4: open, fifth valve V5: open. As a result, the saturated brine in the brine tank 6 flows down by gravity through the brine downflow line 16. On the other hand, the raw water in the raw water tank 5 flows down via the raw water flow-down line 17, and the saturated salt water and the raw water are mixed at the soft water outlet 12 serving as the inlet of the regenerated liquid during the regeneration step. Then, the salt water becomes a predetermined concentration (about 10%) and flows down from the upper portion of the resin tube 1 to regenerate the ion exchange resin 4. The salt water after the regeneration is discharged out of the system through the drain line 18. During this regeneration process,
Since the third valve V3 is open, when a user at home opens a faucet (not shown) connected to the end 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, the raw water is supplied via 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, so that use of the water is not hindered. Then, the salt water regeneration step is performed for a predetermined time (for example, about 15 minutes). That is, when the regeneration of the ion exchange resin 4 is completed by flowing a predetermined amount of salt water, the process proceeds to the next extrusion step SO.

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

Here, the replenishment of water from the raw water tank 5 to the salt water tank 6 during the regeneration step will be described with reference to FIG. That is, at the time of the regeneration step, the saturated brine already generated and stored before the regeneration step flows down through the brine downflow line 16. It flows into the part 6A, passes over the upper end of the partition wall 23, and flows into the second part 6B.
In this way, raw water is replenished to the extent that the level of saturated salt water falls as the saturated salt water flows down, but the raw water layer with a low concentration is located above the saturated salt water layer due to the difference in specific gravity. The saturated brine is allowed to flow while maintaining the temperature.
The water level control in the salt water tank 6 by this water replenishment is performed by the operation of the water level control device 19 of the raw water tank 5, and the net 2
It flows up to a predetermined water level LW above 1, and the salt is dissolved in the raw water to generate and store saturated brine during regeneration. After the regeneration control CC is completed, the saturated salt water is finally obtained after a lapse of a while (for example, 12 hours).

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, as shown in FIGS. 5 and 10, the first valve V1:
Closed, second valve V2: open, third valve V3: open, fourth valve V4:
Closed, fifth valve V5: Open. As a result, the raw water tank 5
The water supply pump 9 is driven by the operation of the flow switch 10 or the pressure switch 11 accompanying the raw water flowing down the raw water line 8. The raw water in the raw water tank 5 flows through a washing flow path composed of a part of the raw water line 8, a bypass line 15, a part of the soft water line 13, a resin cylinder 1, and a 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 operation of the water supply pump 9 becomes larger (for example, about 15 times) as compared with that in the extrusion step, and the residual water in the resin cylinder 1 rapidly decreases. It is discharged outside. This cleaning step is performed, for example, for about 5 minutes.

When the cleaning step SJ is completed, an origin setting step SG is executed. In this origin setting process SG, the switching valve device VA is controlled to the water flow process position (origin) P1 to be in a water flow standby state. When the user opens the faucet in the water-flow standby state, the water-flow process is performed.

Next, the initial setting control CA will be described with reference to FIG.
It will be described according to the following. Step S1 (hereinafter Sx is step S
x ), the reset switch RE is ON
It is determined whether it has been performed. If YES is determined ,
The process proceeds to step S2 to drive 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 process proceeds to step S3 , where the position detecting means PS starts detecting the cleaning process position P5.

This detection is performed as follows. That is, the photo sensor SN is set to a predetermined range of time T41 to T42.
OFF (shield)-ON (detection hole)-OFF (shield)
-2N 0N when the ON (detection hole) pattern is detected
The position is determined as the cleaning process position P5. The interval 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 photosensor SN, the photosensor SN becomes 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, T4
5 so that it becomes OFF- at T41-T42.
Detecting an ON-OFF-ON pattern does not exist with other combinations of detection holes.

As described above, since the position of the rotating body 32 at the time of resetting is not known, the OFF-ON-OFF-ON pattern can be changed within a predetermined time (a predetermined time range) using two adjacent detection holes. Is also effective.

When the cleaning process position P5 is detected in step S3, the process proceeds to step S4 and the above-described cleaning process SJ is performed.
The predetermined time (e.g., about 5 minutes) run, home search step
Move to SG . In the origin search step SG , the cleaning step
In a manner similar to the detection of the position P5 , the original detection hole is used by using two adjacent detection holes, the first detection hole H1 and the auxiliary detection hole HS.
A point position (water passage step position) P1 is detected. That is, the photo sensor SN is turned off (shielded) within T01 (45 seconds).
When an ON (detection hole) -OFF (blocking) -ON (detection hole) pattern is detected , the second ON position is set to the origin position (communication).
(Water process position) P1 . Origin position (through
When the (water process position) P1 is detected, the water supply standby state is established, and the water supply process ST is executed when the user opens the faucet.

According to the above embodiment, the following operation and effect can be obtained. Performing the reset basically means returning the initial position, that is, the switching valve device VA to the home position P1.
When resetting, it is not known which process position the switching valve device VA is in, or which process is between which processes. Now, assuming that the resetting step is a priming step, a regenerating step and an extruding step are performed before returning to the origin position P1. In the regeneration step, the salt water flows into the resin cylinder 1, and since the extrusion step is hardly performed, the salt water remains in the resin cylinder 1. When the process proceeds to the water passing step as it is, the treated water mixed with the salt water is supplied through the soft water line 13. However, according to the present embodiment, the cleaning step is provided after the regeneration step, and when resetting is performed, the above-described cleaning step is performed for a predetermined time before being positioned in the water passage step. Will be discharged through the drain line. Therefore, it is possible to avoid the problem that salt water is mixed in the water passage process after reset.

[0037] Incidentally, priming step in the regeneration control CC, regeneration process, an extrusion process, the position detection in the wash step, Knowing the current step position, with that rotor 32 rotates, the next ON signal The configuration is such that the time when the photo sensor SN detects is recognized as the next process position.

Next, another embodiment of the present invention will be described with reference to FIG. This embodiment differs 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 tube 1, and branches off from the outlet side of the water supply pump 9 in the soft water line 13. Raw water line 5 leading to the upper part of the resin cylinder 1
0, and a sixth valve V6 is interposed in the raw water line 50,
The flow path in the washing process is changed to the raw water tank 5-raw water line 8
-A part of the bypass line 15 (including the third valve V3)-a part of the soft water line 13 (including the water supply pump 9)-a raw water line 50-a resin tube 1-a washing flow path including a drain line 18. . Further, a point that the flow path in the priming step is the same as the cleaning flow path. The pressure switch 11 and the flow switch 10 are provided on the outlet side of the pump 9. Note that, in FIG. 17, the same components as those in FIGS. 1 to 5 are denoted by the same reference numerals, and description thereof will be omitted.

In this embodiment, the first valves V1 to V5 of the switching valve device VA in the water passing step, the regeneration step, and the pushing step are described.
The open / closed state of the valve V5 is the same as in FIGS. 1 to 5, and the sixth valve V6 is all closed in each step. In addition, the open / close state of the switching valve device during the cleaning step 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 feed water pump 9 is driven by the operation of the flow switch 10 or the pressure switch 11 when 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 supplied to the raw water line 8 by the suction and discharge operations of the water supply pump 9.
-Part of bypass line 15-Part of soft water line 13-
It flows through a washing flow path composed of the raw water line 50, the resin cylinder 1 and the drain line 18. Thus, the cleaning step is performed in the same manner as in the first embodiment. Further, the open / close state of the switching valve device during the priming process is as follows: 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 V
6: Open.

Note that the present invention is not limited to the above-described embodiment, and as described in the section of the embodiment of the present invention, a water supply pump is not provided and the direct pressure of the raw water supply line is applied to the processing vessel. The present invention is also applicable to a water treatment apparatus of a hanging type. In this case, it is necessary to secure the water pressure of the raw water supply line by providing a pump upstream of the raw water supply line.
This embodiment will be described with reference to FIG. This embodiment is different from the first embodiment in FIG. 1 in that the raw water line 8 in the water flow path is directly connected to the raw water supply line 20 without providing the water supply pump 9, and the flow path in the washing process is Supply line 20-part of raw water line 8-bypass line 15 (including third valve V3)-part of soft water line 13-
This is a point where the washing flow path is formed of the resin cylinder 1 and the drain line 18. In FIG. 18, the same components as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.

In this embodiment, the water passing step, the priming step,
The open / close states of the first to fifth valves V1 to V5 of the switching valve device VA in the regeneration step, the pushing step, and the cleaning step are the same as those in FIGS.

[0042]

According to the present invention configured as described above,
When the control device is reset, when the switching valve device is returned to the origin, even if the regeneration process is passed, the cleaning device is returned to the origin after performing the cleaning process for a predetermined period of time. The effect is great, for example, it can be prevented from flowing into the treated water line.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a water treatment apparatus showing a water passage step according to one embodiment of the present invention.

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

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

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

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

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

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

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

FIG. 9 is a view showing an open / closed state of the switching valve device in the pushing process according to the embodiment of the present invention.

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

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

FIG. 12 is a perspective view of a main 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 according to the embodiment of the present invention.

FIG. 15 is a flowchart showing a control procedure by the control device of the embodiment of the present invention.

FIG. 16 is an exploded view of a main part showing a positional relationship of a detection hole of the rotating body of the embodiment of the present invention.

FIG. 17 is a configuration diagram of a water treatment apparatus showing a cleaning process according to another embodiment of the present invention.

FIG. 18 is a configuration diagram of a water treatment apparatus showing a water passage step according to another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Resin cylinder 4 Ion exchange resin 5 Raw water tank 6 Salt water tank 8 Raw water line 9 Feed water pump 13 Soft water line 16 Salt water flowing down line 17 Raw water flowing down line 18 Drain line C Control unit RE Reset switch VA Switching valve unit V1, V2, V3, V4 , V5 valve

────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Go Yoneda 7 Horie-cho, Matsuyama-shi, Ehime Miura Industrial Co., Ltd. Examiner Hiroshi Meshiro (56) References JP 50-57971 (JP, A) Kaisho 53-117253 (JP, A) JP-A 6-19892 (JP, U) JP-B 3-63439 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) C02F 1 / 42 B01J 47/00-49/02

Claims (1)

(57) [Claims] 1. A water passing step of flowing raw water through a water passage that sequentially includes a processing vessel containing a processing material and a processing water line;
A regenerating step of flowing a regenerating liquid through a regenerating flow path sequentially including a processing vessel and a drain line; an extruding step of flowing raw water through an extruding flow path sequentially including a processing vessel and a drain line;
In a water treatment apparatus in which the flow rate of raw water per unit time is increased from that in the extrusion step and the cleaning step is performed by switching the flow to a cleaning flow path including a processing vessel and a drain line sequentially, the raw water is inserted into the flow path. A plurality of valve bodies for opening and closing the respective flow paths by changing the open / close state, a plurality of cam bodies acting on the valve bodies to control the opening and closing, and connecting these cam bodies to the respective flow paths. And a controller that controls the driver to sequentially switch between the water passing step, the regeneration step, the extrusion step, and the cleaning step, and the controller is reset. And a reset control unit for positioning the driving body at a cleaning step position, performing a cleaning step for a predetermined time, and then positioning the driving body at a water passing step position.