JP5714278B2 - Water softening device, ion exchange resin regeneration device, water softening device regeneration system - Google Patents

Description

  The present invention includes a water softening device that removes hardness components (calcium component and magnesium component) from raw water such as tap water and well water, and an ion exchange resin regeneration device that regenerates an ion exchange resin used for removing hardness components in the water softening device, The present invention relates to a regeneration system for a water softening device.

  Raw water, such as tap water, contains a hardness component (calcium component or magnesium component). Water whose hardness component is higher than a certain standard is called hard water, and low water is called soft water. The hardness component of water is said to cause various problems in daily life or industry. For example, in daily life, extra detergent is consumed in washing or dishwashing, and the quality of washing is reduced. Also, in the industry, the hardness component is crystallized, resulting in a decrease in boiler performance, piping clogging, etc., causing trouble.

  In view of the above background, water softening devices that remove hardness components using an ion exchange method are commercially available and proposed for industrial use or home use (see Patent Document 1, Patent Document 2, and Patent Document 3). Since such a water softener uses an ion exchange resin for removing hardness components, it is necessary to regenerate (reactivate) the ion exchange resin by passing a high-concentration saline solution after a certain period of use. For this reason, it is customary that an ion exchange resin regeneration device is attached to the water softening device (see Patent Document 4 and Patent Document 5).

JP-A-6-238269 JP 7-42904 A Japanese Patent Laid-Open No. 7-232166 JP 2000-107755 A JP 2009-106882 A

  However, the conventional water softening device has an integral structure with the attached ion-exchange resin regenerator, the regenerator is complicated, and the water softener is not easy to use.

  The present invention has been made in view of the above problems, and provides a water softening device that can separate and connect a water softening device and an attached ion exchange resin regeneration device, and is excellent in usability, and has a simple structure and a regeneration time. An object of the present invention is to provide an ion exchange resin regenerator capable of shortening the length of water and to provide a regeneration system for a water softener.

In order to solve the above problems, a water softening device regeneration system according to the present invention includes:
A carriage that can move on the ground or the floor, and a resin cylinder that is supported on the carriage and that stores an ion exchange resin therein, a raw water inlet part and a soft water outlet part are provided at the head part of the resin cylinder, A vertical guide pipe that guides raw water from the raw water inlet to the lower part of the resin cylinder and passes between the ion exchange resins from below to above is arranged in the cylinder, and the soft water outlet can be switched by a switching lever. A three-way valve having a first connection part and a second connection part is attached, and a detachable pipe or hose is attached to and detached from the first connection part and the second connection part on the raw water inlet part and the soft water outlet part side , respectively. A water softener to which an adapter is attached ;
A support base, a salt water tank provided on the support base, a salt input tank connected to the salt water tank via a communicating portion and charged with a predetermined amount of solid salt via a solid salt filter, and an inside of the salt water tank It has a pump and a discharge pipe arranged, a salt water outlet is provided at the tip of the discharge pipe, a salt water return part is provided in the salt charging tank, and a support base with an on-off valve for draining the salt water in the salt water tank A water softening device regeneration system is provided with an ion exchange resin regeneration device provided with a drain pipe, and a salt water outlet part and a salt water return part having a detachable adapter for attaching and detaching a salt water circulation pipe or hose, respectively. And
The first connection part and raw water inlet part of the soft water outlet side on the water softening device side and the salt water outlet part and salt water return part on the regenerator side are connected by a circulation pipe or hose, respectively, and the soft water outlet part and raw water inlet part As a salt water inlet and a salt water outlet, respectively, to form a circulation path for forcibly circulating the salt water in the salt water tank by a pump,
A pipe or hose for washing water is connected to the second connection part of the soft water outlet part on the water softening device side, the second connection part can be communicated with the soft water outlet part by the switching lever, and the first connection part can be shut off. Water for washing is introduced into the resin cylinder from the pipe or hose to wash the ion exchange resin, and the waste water after washing is discharged from the drain pipe of the salt water tank through the salt charging tank.
A regeneration system for a water softening device .

In the water softening device regeneration system according to the present invention, a vertical guide pipe is provided with a lower filter serving as a raw water outlet and an upper filter serving as a soft water inlet, and the head section connects the raw water inlet section and the internal passage of the vertical guide pipe. A second feature is that a first passage and a second passage connecting the soft water outlet and the upper filter are provided.

A third feature of the water softening device regeneration system according to the present invention is that an initial water replenishing tank for replenishing the salt water tank with initial water is connected to the discharge pipe.

As described above, according to the water softening device regeneration system of the present invention, since the water softening device and the ion exchange resin regeneration device can be easily separated and connected, when using the water softening device, The device can be used by moving it to the place of use, and the water softening device is easy to use.

Further, according to the water softening device regeneration system of the present invention, by forming a circulation path for forcibly circulating salt water to be used for regeneration between the ion exchange resin regeneration device and the water softening device, Regeneration work time can be significantly shortened, and water consumption for regeneration can be greatly reduced. It has an excellent effect that it can be switched to use of a water softening device immediately after the regeneration work of the ion exchange resin. Furthermore, by switching the switching lever of the three-way valve, cleaning water can be easily introduced into the resin cylinder and the ion exchange resin can be cleaned.

  Furthermore, the structure of each device is simple, and an excellent effect that it can be provided at a low manufacturing cost is achieved.

The front view which shows one Embodiment of this invention, and shows the use condition of the water softening apparatus of this invention, The top view of the water softening apparatus shown in FIG. (A) is a side view of the water softening device shown in FIG. 1, (B) is a cross-sectional view of the water softening device showing the action, FIG. 1 is a partial cross-sectional side view of an ion exchange resin regeneration device used in the water softening device shown in FIG. The front view of the ion exchange resin reproduction | regeneration apparatus shown in FIG. (A) is a top view which shows a mode that the regeneration operation | work of the ion exchange resin of a water softening apparatus is performed using the ion exchange resin reproduction | regeneration apparatus, (B) is sectional drawing of a water softening apparatus, The top view which shows a mode that salt water is drained from the water softening device, It is a top view which shows a mode that the salt water is removed from the water softening apparatus using a tap water.

  The best mode for carrying out the present invention will be described with reference to the drawings. 1 to 8 show one embodiment of the present invention. In these drawings, reference numeral 100 denotes a water softening device, reference numeral 200 denotes an ion exchange resin regenerating device, and reference S denotes a water softening device including both devices. System.

  First, the structure of the water softening device 100 will be described with reference to FIGS. 1 to 3. In the device 100, a cylindrical support container 112 is placed on a carriage 110 provided with a moving caster 111 on the lower surface. The bottomed cylindrical resin cylinder 113 is supported inside the support container 112. A predetermined amount of ion exchange resin 114 is stored inside the resin tube 113. A head portion 115 is attached to the upper end opening of the resin tube 113, and a raw water inlet portion 116 into which raw water (including a hard component) is introduced into the head portion 115, and a soft water outlet portion 117 through which the generated soft water is discharged. Is attached.

  On the lower surface of the head portion 115, a vertical guide pipe 118 that is positioned at the center inside the resin cylinder 113 and extends vertically is suspended, and a lower filter 119 and an upper filter 120 are attached to the upper and lower ends of the vertical guide pipe 118. The raw water inlet portion 116 communicates with an internal passage 122 extending up and down of the resin tube 113 through a first passage 121 in the head portion 115, and a lower end opening of the internal passage 122 communicates with the inside of the resin tube 113 through a lower filter 119. doing. The soft water outlet portion 117 communicates with the second passage 123 in the head portion 115, and the second passage 123 communicates with the inside of the resin cylinder 113 through the upper filter 120.

  An attachment / detachment adapter 125, which can attach / detach the first water hose 130 through an elbow pipe 124, is attached to the tip of the raw water inlet portion 116. A three-way valve 126 having a three-way valve (not shown) is attached to the tip of the soft water outlet 117. The three-way valve 126 is provided with a downward first connecting portion 126A and an upward second connecting portion 126B, which are switched by a switching lever 127 so that the soft water outlet 117 is connected to the first connecting portion 126A and the second connecting portion 126B. Can communicate with either. In addition, the adapter 125 for attachment / detachment which can attach or detach the 2nd hose 131 for water flow to the 1st connection part 126A and the 2nd connection part 126B is attached.

  A method of using the water softening device 100 having the above configuration will be described later.

  Next, the structure of the ion exchange resin regeneration apparatus 200 will be described with reference to FIGS. 4 and 5. In the apparatus 200, an upward bottomed cylindrical salt water tank 212 is placed via a spacer 212A on a carriage (support base) 210 having a moving caster 211 on the lower surface. The salt water tank 212 temporarily stores highly concentrated salt water used for the regeneration operation of the ion exchange resin, and the salt water tank 212 is also provided with an upward upward connection via a lateral communication portion 213 at a level higher than the bottom surface. A bottom cylindrical salt charging tank 214 is connected. The salt charging tank 214 is supported on the carriage 210 by a mounting ring 215. The inside of the salt water tank 212 and the inside of the salt charging tank 214 are in communication with each other via the inside of the communication portion 213.

  A submersible pump 216 and an upward discharge pipe 217 are disposed inside the salt water tank 212. The water suction port of the submersible pump 216 is positioned one step below the bottom surface of the salt charging tank 214 and the bottom surface of the communication portion 213. The discharge pipe 217 extends horizontally from the elbow portion near the upper end of the salt water tank 212 and is connected to the T-shaped pipe 218. The T-shaped tube 218 is located outside the salt water tank 212, and the T-shaped tube 218 is provided with a first connecting portion 218A and a second connecting portion (salt water outlet portion) 218B that face upward. A small initial water replenishment tank 220 is attached to the first connection portion 218A via a check valve 219. An attachment / detachment adapter 221 that can attach / detach a third hose 132 described later is attached to the second connection portion 218B. Reference numeral 222 denotes a power cord for the submersible pump 216.

  A net-like solid salt filter 223 is inserted into the salt charging tank 214 from above. A predetermined amount (for example, 1 to 2 kg) of solid salt 224 is charged into the salt charging tank 214 through the net-shaped solid salt filter 223. A salt water return portion 225 is provided in the vicinity of the upper end of the salt charging tank 214, and an attachment / detachment adapter 221 that can attach and detach a first hose 130 described later is attached to the salt water return portion 225.

  A drainage pipe 226 located immediately below the salt water tank 212 is attached to the lower surface of the carriage 210. The drainage pipe 226 communicates with the drainage hole on the bottom surface of the salt water tank 212 via a drainage passage 227 communicating with the carriage 210 in the plate thickness direction. The drainage pipe 226 extends forward from the bottom of the carriage 210, and an attachment / detachment adapter 221 that can attach / detach a later-described fourth hose 133 is attached to the tip of the drainage pipe 226. The drain pipe 226 is provided with an on-off valve 228. Reference numeral 229 denotes a lid that covers the upper end openings of the salt water tank 212 and the salt charging tank 214.

  A method of using the ion exchange resin recycling apparatus 200 having the above configuration will be described later.

  Next, the usage method and action of the water softening device 100 described first will be described.

  First, as shown in FIG. 1, a first hose 130 is connected between the raw water inlet 116 of the head portion 115 of the water softening device 100 and the discharge pipe 141 of the water pipe 140 that supplies the raw water. The second hose 131 is connected to the soft water outlet 117 of the head portion 115. Moreover, the soft water outlet part 117 and the 2nd hose 131 are connected by operating the switching lever 127 by the side of the soft water outlet part 117 of the head part 115. When the open / close stopper 142 of the water pipe 140 is opened in this state, tap water (raw water) enters the resin cylinder 113 from the raw water inlet 116 of the head part 115 through the first hose 130 as indicated by an arrow A. Then, the soft water after the hardness component (calcium or magnesium) is removed by the ion exchange resin in the resin tube 113 is discharged from the soft water outlet portion 117 of the head portion 115 through the second hose 131 as shown by an arrow B.

  In the water softening device 100, as shown in FIG. 3B, the tap water supplied to the raw water inlet 116 of the head portion 115 is in the middle of the first passage 121 in the head portion 115 and the resin tube 113. It passes through the internal passage 122 of the vertical guide pipe 118, passes through the resin tube 113 upward from the lower filter 119, passes through the second passage 123 in the head portion 115 from the upper filter 120, and is discharged from the soft water outlet portion 117. When tap water passes between the ion exchange resins 114 in the resin cylinder 113 from the bottom to the top, hardness components (calcium and magnesium) contained in the tap water are removed by ion exchange. Then, the soft water from which the hardness component has been removed is discharged from the soft water outlet portion 117 of the head portion 115.

  According to the water softening device 100 of this embodiment, there exist the following effects.

(1) Since the water softening device 100 can be separated from and connected to the ion exchange resin regeneration device 200 and the cart 110 and the caster 111 are attached to the water softening device 100, the water softening device 100 can be moved to the place of use and used. Moreover, since the hoses 130 and 131 can be easily connected to the raw water inlet portion 116 and the soft water outlet portion 117 by the attachment / detachment adapter 125, the usability of the water softening device 100 is excellent. Examples of places where the water softening device 100 is used include an outdoor car wash, a cooking class, a beauty bar, a coin laundry, a sauna, a home kitchen, a bathroom, a washing machine storage, a washroom, and the like, and can be moved widely. .
(2) In the integrated type with the conventional ion exchange resin regenerator, when the ion exchange resin regenerator fails, the water softener could not be used, but there was no worry about it.
(3) Soft water can be easily and efficiently obtained from tap water.

  Next, the usage method and operation of the ion exchange resin regeneration apparatus 200 will be described.

  First, the water pipe 140 side of the first hose 130 is removed and connected to the salt water return portion 225 of the salt charging tank 214 on the ion exchange resin regenerator 200 side. As a result, as shown in FIG. 6A, the raw water inlet portion (salt water outlet portion) 116 of the head portion 115 on the water softening device 100 side and the salt water return portion 225 of the salt charging tank 214 on the ion exchange resin regeneration device 200 side. Are connected by a first hose 130. Next, the second hose 131 is removed, and the third hose 132 is connected to the first soft water outlet part (salt water inlet part) 117 of the head part 115 on the water softening apparatus 100 side and the T-shaped pipe 218 on the ion exchange resin regeneration apparatus 200 side. 2 It connects between connection parts (saline outlet part) 218B. The switching lever 127 in the salt water inlet portion 117 of the head portion 115 on the water softening device 100 side remains in communication between the salt water inlet portion 117 and the third hose 132. Then, the power outlet 222A of the submersible pump 216 is connected to a power source (not shown).

  Next, with reference to FIG. 4, a net-like fixed salt filter 223 is inserted and disposed in the salt charging tank 214, and solid salt 224 (for example, 1 to 2 kg) is charged. Replenish (eg 1 liter). The replenished water flows down the T-shaped pipe 218 and the discharge pipe 217 and is stored in the salt water tank 212 as initial water. Finally, the lid 229 is attached to the salt charging tank 214 and the salt water tank 212. Thus, the preparation work is completed, and a circulation path for forcibly circulating salt water by the submersible pump 216 is formed.

  When the submersible pump 216 is switched on and operated, first, the initial water in the salt water tank 212 passes through the discharge pipe 217, the T-shaped pipe 218, and the third hose 132 as shown by the arrow C in FIG. The water hose 130 enters the resin tube 113 from the salt water inlet portion 117 of the head portion 115 on the water softening device 100 side, exits from the salt water outlet portion 116 of the head portion 115 on the water softening device 100 side, and as indicated by the arrow D, the first hose 130. , And is sent from the salt water return portion 225 of the salt charging tank 214 into the salt charging tank 214. The initial water sent into the salt charging tank 214 becomes high-concentration salt water due to the dissolution of the solid salt 224, and is sent from the salt charging tank 214 to the original salt water tank 212 through the communication portion 213. High concentration of salt water is temporarily stored. As a result of the operation of the submersible pump 216, high-concentration salt water passes through the discharge pipe 217, the T-shaped pipe 218, and the third hose 132 as indicated by an arrow C, and the salt water inlet part of the head part 115 on the water softening device 100 side It is introduced into the resin cylinder 113 from 117.

  Since the bottom surface of the salt charging tank 214 and the bottom surface of the communication part 213 are positioned higher than the bottom surface of the salt water tank 212, the salt water sent from the salt charging tank 214 smoothly flows into the salt water tank 212, and the salt water tank 212. From the vicinity of the bottom surface to a predetermined height. Thereby, the submersible pump 216 is always filled with salt water, and salt water is always sucked from the suction port and can be smoothly discharged from the discharge pipe 217 toward the resin cylinder 113.

  In the water softening device 100, as shown in FIG. 6B, high-concentration salt water introduced from the salt water inlet portion 117 of the head portion 115 passes through the second passage 123 and the upper filter 120 in the head portion 115. The ion exchange resin 114 passes from above to below, passes from the lower filter 119 through the internal passage 122 of the vertical guide tube 118 and the first passage 121 in the head portion 115, and is led out from the salt water outlet portion 116. When passing between the ion exchange resins 114 from the top to the bottom, an ion exchange action between high-concentration salt water (sodium ions) and a saturated ion exchange resin (calcium ions or magnesium ions) is performed.

  The salt water that has passed between the ion exchange resins 114 exits from the salt water outlet portion 116 of the head portion 115 on the water softening device 100 side, passes through the first hose 130 as indicated by the arrow D, and passes from the salt water return portion 225 to the salt charging tank. The water is circulated in 214. As a result, a circulation path for forcibly circulating high-concentration salt water by the submersible pump 216 is formed between the ion-exchange resin regeneration device 200 and the water softening device 100, and the high-concentration salt water is circulated for a predetermined time (for example, 30 minutes). The ion exchange resin 114 in the water softening device 100 can be reactivated (regenerated) by circulating the salt water.

  7 and 8 show an operation after the ion exchange resin 114 in the water softening device 100 is reactivated (regenerated). When the submersible pump 216 is stopped and the on-off valve 228 of the drain pipe 226 on the ion exchange resin regenerator 200 side is opened, the resin cylinder 113 of the water softening device 100 exits into the salt charging tank 214 as shown in FIG. The salt water to be circulated is naturally discharged from the drain pipe 226 below the salt water tank 212. Thereby, most salt water which remains in the water softening apparatus 100 is discharged | emitted.

  Next, as shown in FIG. 8, the third hose 132 is removed, and the hose 132 is discharged from the second connection portion 126 </ b> B of the salt water inlet portion (tap water inlet portion) 117 on the water softening device 100 side and the water pipe 140. Connect to tube 141. The switching lever 127 of the three-way valve 126 is tilted to bring the tap water inlet portion 117 and the second connection portion 126B into communication, and the tap water inlet portion 117 and the first connection portion 126A are closed. In this state, when the open / close stopper 142 of the water pipe 140 is opened, tap water enters the resin tube 113 from the tap water inlet 117 through the third hose 132 as shown by an arrow E in FIG. From the resin tube 113 through the salt water outlet part (tap water outlet part) 116 and the first hose 130, and enters the salt charging tank 214 on the ion exchange resin regenerator 200 side, and the drain pipe of the salt water tank 211. 226 is discharged. In this way, the ion exchange resin 114 is washed and prepared for the next use.

  When the regeneration operation of the ion exchange resin 114 is completed, the first hose 130 and the third hose 132 are removed, and the first hose 130 is reconnected to the discharge pipe 141 of the water pipe 140 as shown in FIG. Is connected to the first connection portion 126A of the three-way valve 126, and the switching lever 127 is raised to connect the soft water outlet 117 and the first connection portion 126A. After that, if the open / close stopper 142 of the water pipe 140 is opened, soft water is discharged from the second hose 131. The soft water flowing from the second hose 131 is checked for soft water with an indicator.

  According to the ion exchange resin regeneration apparatus 200 of the present embodiment, the following effects are obtained.

(1) Since the water softening device 100 and the ion exchange resin regeneration device 200 are connected by the two hoses 130 and 132 to form a circulation path for forcibly circulating the high-concentration salt water by the submersible pump 216. Compared to the prior art, the time required for regeneration of the ion exchange resin can be greatly reduced. Thereby, the usage-amount of the water used for reproduction | regeneration of an ion exchange resin can be reduced significantly.
(2) Conventionally, the regeneration operation is started after solid salt is poured into dissolved water and stirred with a stir bar to ensure sufficient salt-dissolved water. In the apparatus 200 of this embodiment, Since the forced circulation by the pump 216 is performed, a salt solution having a sufficient concentration can be prepared immediately, and the regeneration operation can be immediately started.
(3) Since the bottom surface of the salt charging tank 214 and the bottom surface of the communication part 213 are positioned higher than the bottom surface of the salt water tank 212, the salt water sent from the salt charging tank 214 flows smoothly into the salt water tank 212. Thus, the salt water is constantly discharged from the discharge pipe 217 by the submersible pump 216, and can be smoothly forcedly circulated.
(4) After completion of the regeneration, the soft water can be obtained immediately from the water softening device 100 by connecting the two hoses.

  In the ion exchange resin regeneration apparatus 200 of the above-described embodiment, the initial water replenishment tank 220 is installed for replenishing the initial water, but the water supply hose is connected to the discharge pipe of the water pipe via an adapter and automatically switched in the middle. Initial water can be automatically replenished by interposing a valve, a three-way valve, or the like. In addition, it is possible to automatically switch the three-way valve and open / close the drain pipe on and off by operating the electric valve.

  As described above, when the water softening device of the present invention is used, the water softening device alone can be moved to the place of use and is excellent in usability. In addition, when the ion exchange resin regenerator of the present invention is used, high-concentration salt water is forcibly circulated by an underwater pump, the regeneration time of the ion exchange resin can be greatly shortened, and consumption of water used for regeneration can be greatly reduced. Immediately after the regeneration of the ion exchange resin, it is possible to switch to using a water softener. In addition, the structure of each device is simple and can be provided at a low manufacturing cost.

  The water softening device according to the present invention is a device that removes hardness components (calcium component and magnesium component) from raw water such as tap water to obtain soft water, and the ion-exchange resin regenerator according to the present invention is a water softening device. It can be widely used as an apparatus for regenerating the ion exchange resin to be used.

DESCRIPTION OF SYMBOLS 100 Water softening apparatus 110,210 Cart 111,211 Caster 112 Support container 113 Resin cylinder 114 Ion exchange resin 115 Head part 116 Raw water inlet part (salt water outlet part)
117 Soft water outlet (salt water inlet)
118 Vertical guide pipe 119 Lower filter 120 Upper filter 121 First passage 122 Internal passage 123 Third passage 124 Elbow pipe 125, 221 Detachment adapter 126 Three-way valve 126A, 218A First connection portion 126B, 218B Second connection portion 130 First Hose 131 Second hose 132 Third hose 133 Drain hose 140 Water pipe 142,228 Open / close valve 200 Ion exchange resin regeneration device 212 Salt water tank 212A Spacer 213 Communication part 214 Salt input tank 215 Mounting ring 216 Submersible pump 217 Discharge pipe 218 T-shape Pipe 219 Check valve 220 Initial water replenishment tank 222 Power cord 223 Fixed salt filter 224 Solid salt 225 Salt water return section 226 Drain pipe 227 Drain passage 229 Lid G Floor surface S Water softening device regeneration system

Claims (3)

Comprising a movable carriage on the ground or floor (110), truck (110) a resin cylinder ion exchange resin therein is supported (114) is stored on a (113), the resin barrel (113) The head part (115) is provided with a raw water inlet part (116) and a soft water outlet part (117 ) , and the raw water from the raw water inlet part (116) is placed in the resin cylinder (113) at the lower part in the resin cylinder (113) . A vertical guide pipe (118) that guides and passes between the ion exchange resins (114) from the bottom to the top is disposed, and a first connection part (switchable by a switching lever (127) ) is provided at the soft water outlet part (117) ( 126A) and a three-way valve (126) having a second connection part (126B) are attached, and the first connection part (126A) and the second connection part (126B) on the raw water inlet part (116) and soft water outlet part (117) side are attached. ), the also tube for water flow Water softening device detachable adapter for attaching and detaching the hose (130, 131, 132) respectively (125) is attached (100),
A support base (210), a salt water tank (212) provided on the support base (210), and connected to the salt water tank (212) via a communicating portion (213), and via a solid salt filter (223). A salt charging tank (214) charged with a fixed amount of solid salt (224), a pump (216) and a discharge pipe (217) arranged inside the salt water tank (212), and a discharge pipe (217) A salt water outlet part (218B) is provided at the tip, a salt water return part (225) is provided in the salt charging tank (214), and an on-off valve for draining salt water in the salt water tank (212) to the support base (210) ( 228) attached drainage pipe (226), and a salt water outlet part (218B) and a salt water return part (225) are attached to and detached from the salt water circulation pipe or hose (132, 130) respectively. Take Ion exchange are attached resin regeneration apparatus provided with (200), a reproducing system of the water softener,
For circulation between the first connection portion (126A) and the raw water inlet portion (116) of the soft water outlet portion (117) on the water softening device side, and the salt water outlet portion (218B) and salt water return portion (225) on the regeneration device side, respectively. And the soft water outlet part (117) and the raw water inlet part (116) as the salt water inlet part and the salt water outlet part, respectively, and the salt water in the salt water tank (212) by the pump (216). Form a circulation path for forced circulation,
A pipe or hose (132) for washing water is connected to the second connection part (126B) of the soft water outlet part (117) on the water softening device side, and the second is connected to the soft water outlet part (117) by the switching lever (127). The connecting portion (126B) can be communicated and the first connecting portion (126A) can be blocked, and water for cleaning is introduced into the resin tube (113) from the tube or hose (132) to introduce the ion exchange resin (114). Washing and draining the drained water from the drain pipe (226) of the salt water tank (211) through the salt charging tank (214),
A regeneration system for a water softening device . The vertical guide pipe (118) is provided with a lower filter (119 ) serving as a raw water outlet and an upper filter (120) serving as a soft water inlet. The head section (115) is provided with a raw water inlet section (116) and a vertical guide pipe (118). ) a first passage connecting the inner passage (122) of (121), wherein the second passage (123) is provided for connecting soft water outlet portion (117) and an upper filter (120), according to claim The regeneration system of the water softening device according to 1. The water softening device according to claim 1 or 2, wherein an initial water replenishment tank (220 ) for replenishing initial water to the salt water tank (212) is connected to the discharge pipe (217) . Playback system .

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