JP6971628B2 - Water treatment equipment - Google Patents

Description

The present invention relates to a water treatment apparatus and a water treatment method.

In a water treatment device for filtering raw water supplied from a water source such as a well, for example, a filtration device using an ion exchange resin is known. For example, the filtration device includes a filtration tank in which an ion exchange resin, which is a filter medium, is housed. When the raw water passes through the filter tank, the filtration device exchanges sodium and cations in the raw water to capture impurities in the raw water with a filter medium and soften the raw water. The cation is a cation such as iron, manganese, calcium, magnesium ion or the like.

In the water treatment device, when the cation concentration of the ion exchange resin becomes high during the filtration treatment, the regenerated liquid such as high-concentration saline solution is passed through the ion exchange resin, and the resin and the ions of the cation and sodium are ionized again. Performs the reproduction process to be exchanged. In the regeneration process, the regeneration liquid is replenished from the replenishment tank to the filtration tank at a predetermined timing.

Japanese Unexamined Patent Publication No. 2014-155882

In the above-mentioned water treatment apparatus, if the recycled material is insufficient due to consumption, the recycling is not sufficiently performed, so that the filtration capacity is lowered. Therefore, it is required to replenish the recycled material in the recycled tank at an appropriate timing.

Therefore, it is an object of the present invention to provide a water treatment apparatus capable of encouraging the replenishment of recycled materials.

The water treatment apparatus according to one aspect of the present invention is connected to a filter tank configured to accommodate and allow water to pass through, and is a solid reclaimed material and water constituting the regenerated liquid to be replenished in the filter tank. A remanufacturing tank having a case configured to accommodate the case and an inner case arranged inside the case and extending along the vertical direction, and the inner case provided on the outer surface of the inner case. It has a numerical value corresponding to the amount of the recycled material arranged on the outside of the case, and is provided with an index unit indicating the remaining amount of the recycled material and a predetermined height in the case, and the space in the case is moved up and down. Partition A filter that suppresses the passage of the recycled material,
To prepare for.

In the water treatment apparatus according to another aspect of the present invention, the index unit extends along the vertical direction to indicate a scale indicating the amount of the recycled material and the number of times of the recycling treatment corresponding to the remaining amount of the recycled material. It has a number, the recycled material is salt, and the filter is composed of a non-woven fabric.

According to the present invention, it is possible to provide a water treatment apparatus capable of notifying the user of the replenishment time of the recycled material.

Explanatory drawing which shows the structure of the water treatment apparatus which concerns on one Embodiment of this invention. The front view which shows the structure of the filtration apparatus of the water treatment apparatus which concerns on the same embodiment. The side view which shows the structure of the filtration apparatus of the water treatment apparatus which concerns on the said embodiment. The plan view which shows the structure of the filtration apparatus of the water treatment apparatus which concerns on the said embodiment. The front view which shows the structure of the interface part of the water treatment apparatus which concerns on the said embodiment. Explanatory drawing which shows the filtration process of the water treatment apparatus. Explanatory drawing which shows the backwash treatment of the water treatment apparatus. Explanatory drawing which shows the regeneration process of the water treatment apparatus. Explanatory drawing which shows the cleaning process of the water treatment apparatus. Explanatory drawing which shows the water injection treatment of the water treatment apparatus. The flowchart which shows the notification processing of the water treatment apparatus.

Hereinafter, the water treatment apparatus 10 and the water treatment method according to the embodiment of the present invention will be described with reference to FIGS. 1 to 11. FIG. 1 is an explanatory diagram showing a configuration of a water treatment device 10 according to the present embodiment. FIG. 2 is a side view of the filtration device 12 of the water treatment device 10, FIG. 3 is a front view of the filtration device 12, and FIG. 4 is a plan view of the filtration device 12. FIG. 5 is a front view of the interface unit 73. 6 to 10 are explanatory views showing the operation of the water treatment device 10, and FIG. 11 is a flowchart of notification processing by the control unit.

As shown in FIG. 1, the water treatment device 10 includes a raw water pump 11, a filtration device 12 arranged on the secondary side of the raw water pump 11, and a sterilizer 13 arranged on the secondary side of the filtration device 12. , A treatment water tank 14 arranged on the secondary side of the sterilizer 13, an automatic water supply pump 15 arranged on the secondary side of the treatment water tank 14, a water passage 16 forming a predetermined flow path, and a water passage 16. The flow path switch unit 17 for switching the connection state of the flow path of the above is provided. Further, as the control unit 100, the water treatment device 10 includes a control panel 101 including a control unit 101a for the raw water pump 11, a control panel 102 including a control unit 102a for the water passage 16, and a control unit for the filtration device 12. A control panel 103 having a 103a and a control panel 104 having a control unit 104a for the automatic water supply pump 15 are provided.

The raw water pump 11 includes a motor and a single-stage or multi-stage pump unit having an impeller connected to the motor. The raw water pump 11 boosts the pressure of raw water, for example, well water of a well 21 provided in the ground, and pumps it to the secondary side. The discharge port of the raw water pump 11 is connected to the filtration device 12 by a water passage 16.

As shown in FIGS. 2 to 10, the filtration device 12 includes a filtration tank 22 which is an ion exchange type iron removal / manganese removal tank and a regeneration tank 23 which is a regeneration tank. The filtration tank 22 is installed on a common base 24 together with the sterilizer 13 and the regeneration tank 23, and is housed in the storage cabin.

The filtration tank 22 is formed in a cylindrical shape having, for example, an upper wall, a lower wall, and a peripheral wall, and is configured to be capable of accommodating granular ion exchange resin and water and allowing water to pass through. The filtration tank 22 has a first port 31 and a second port 32 that communicate with the water passage 16. The first port 31 and the second port 32 are formed on, for example, an upper wall. The first port 31 and the second port 32 are configured to be connectable to a plurality of flow paths constituting the water passage 16, and the connection destination and the open / closed state thereof are switchable by the flow path switch unit 17.

A water collecting pipe 33 is provided inside the filtration tank 22. The water collecting pipe 33 includes a pipe portion 34 extending in the vertical direction, a filter cap 35 provided at the lower end of the pipe portion 34, and a plurality of branch pipes 36 and 37 branching at the upper end of the pipe portion 34. The lower end of the pipe portion 34 is arranged near the bottom surface of the filtration tank 22. The filter cap 35 covers the opening at the lower end of the tube portion 34. The filter cap 35 has a plurality of slits 35a. Each slit 35a has a width smaller than the particle size of the particles of the ion exchange resin, and is configured to allow water to pass through. The filter cap 35 allows water to pass through and prevents the ion exchange resin from passing through.

The two branch pipes 36 and 37 provided at the upper end of the pipe portion 34 are led out to the outside of the filtration tank 22. The openings at the ends of the pair of branch pipes 36 and 37 constitute the third port 38 and the fourth port 39, respectively. The third port 38 and the fourth port 39 are configured to be connectable to a plurality of flow paths constituting the water passage 16 via the flow path switch unit 17. The flow path switch unit 17 is configured to be able to switch the connection destination and open / closed state of the third port 38 and the fourth port 39.

The filtration device 12 exchanges sodium and cations in the raw water, that is, cations such as iron, manganese, calcium, and magnesium ions, that is, cations in the raw water, when the raw water sent by the raw water pump 11 passes through the filter material. The impurities in the filter material are trapped in the filter medium to soften the raw water. For example, in this embodiment, at least iron and manganese ions are exchanged. The filtration device 12 is connected to the regeneration tank 23 by the regeneration tube 41.

The regeneration tank 23 includes a case 23a having an upper opening and a cover 23b covering the upper opening of the case 23a.

The case 23a has a cylindrical shape and is configured to be able to accommodate water and recycled materials. A drain port 23c with an on-off valve is provided at a predetermined height of the peripheral wall of the case 23a, and the water in the regeneration tank 23 can be discharged from the drain port 23c. The case 23a is configured to accommodate a solid granular salt as a recycled material for several times, for example, 10 times. At a predetermined height in the case 23a, a filter F for vertically partitioning the space in the case 23a is provided. The filter F is made of, for example, a non-woven fabric and suppresses the passage of granular salts.

Inside the case 23a, an inner case 23d called a brine well having a diameter smaller than that of the case 23a is provided.

The inner case 23d is formed in a cylindrical shape with an opening at the top and extends along the vertical direction. The opening of the inner case 23d is closed by a cap. A plurality of slit holes 23e, which are slit-shaped through holes, are formed on the peripheral wall of the inner case 23d. The slit hole 23e is covered with a filter 23f made of, for example, a non-woven fabric. Through the slit holes 23e, fluid water and salt water can flow in the case 23a and the inner case 23d, while the passage of solid granular salt is suppressed by the filter 23f.

An index unit 25 as a remaining amount display unit indicating the remaining amount of the recycled material is provided on the outer surface of the inner case 23d. The index unit 25 has a scale line 25a as an index for each height dimension corresponding to the amount of salt consumed in one regeneration process, and a number 25b as an index indicating the number of times corresponding to the remaining amount. ing. The index unit 25 extends along the vertical direction. That is, in the index unit 25, the number on the surface of the granular salt as the recycled material deposited inside the case 32a and outside the inner case 23d corresponds to the number of regeneration treatments that can be processed by the remaining recycled material. It is configured as follows. Therefore, the user can easily grasp the number of processes corresponding to the remaining amount of the recycled material by visually observing the index unit 25.

The end of the regeneration tube 41 is arranged near the bottom of the inner case 23d. A resin check 41c for preventing air suction is provided at one end 41a of the regeneration tube 41 arranged in the regeneration tank 23. The inner case 23d is configured to be replenished with treated water through the regeneration tube 41.

The cover 23b has, for example, a circular shape and is provided in the upper opening of the case 23a.

A float switch 27 for detecting the position of the liquid level in the regeneration tank 23 is provided in the regeneration tank 23. The float switch 27 is supported in the inner case 23d of the regeneration tank 23 and floats on the liquid surface of the regeneration tank 23. The float switch 27 includes a float case constituting the outer shell and a switch unit housed in the float case. The electric wires that make up the cable are connected to the switch section inside the float case. The float switch 27 is connected to the control unit 102a via a cable. The float switch 27 detects the liquid level of the regenerated liquid and sends the detected signal to the control unit 102a.

In the reclaimed tank 23 configured as described above, the salt is dissolved in water by replenishing a predetermined amount of water in each reclaiming treatment in a state where, for example, granular salt is contained several times as a reclaimed material. It becomes a predetermined amount of salt water. That is, when a certain amount of water used in one regeneration process is injected into the inner case 23d of the regeneration tank 23, the injected constant amount of water Wa is introduced into the inner case 23d. When a part of the granular salt S1 is dissolved, the water Wa becomes the saturated salt water S2.

Therefore, in the regeneration tank 23, a certain amount of salt water S2 or water Wa and granular salt S1 remaining undissolved on the filter F are present. The salt water S2 in the regeneration tank 23 is sent to the filtration tank 22 through the regeneration tube 41 in a fixed amount by the operation of the ejector 42 in the regeneration process described later.

The sterilizer 13 includes a flow path portion 43, a chemical solution tank 44, a chemical solution pump 45 for sending the chemical solution to the flow path portion 43, and a flow rate sensor 46. The sterilizer 13 sterilizes the fluid flowing through the flow path portion 43 by injecting a predetermined amount of the chemical solution into the flow path portion 43.

The flow rate sensor 46 is, for example, a paddle type flow rate sensor, which comprises a paddle that can be rotated by a fluid flow, a support structure that rotatably supports the paddle, a magnet built in the paddle, and a magnetic sensor. I have. The magnetic sensor is connected to the control unit 102a via a signal line. The flow rate sensor 46 detects the flow of fluid passing through the sterilizer 13 and sends a signal to the control unit 102a.

The treated water tank 14 is a container configured to be able to store the treated water that has passed through the filter tank 22 and the sterilizer 13. The treated water tank 14 is provided with a liquid level sensor 47 that detects the liquid level position of the treated water. The liquid level sensor 47 is connected to the control unit 101a for the raw water pump 11 via a signal line. The liquid level sensor 47 detects the liquid level position of the treated water and sends the liquid level information as an electric signal to the control unit 101a.

The automatic water supply pump 15 includes a motor and a single-stage or multi-stage pump unit having an impeller connected to the motor. Two automatic water supply pumps 15 are provided on the ground, for example. The automatic water supply pump 15 increases the pressure of the water from the treated water tank 14 and pumps it to the secondary side under the control of the control unit 104a for pump control. The discharge port of the automatic water supply pump 15 is connected to the filtration tank 22 via the water passage 16 so as to communicate with each other. A pressure sensor 48 is provided in the flow path on the secondary side of the automatic water supply pump 15.

The pressure sensor 48 is, for example, a diaphragm type pressure sensor 48, and is connected to the control unit 104a via a signal line. The pressure sensor 48 detects the discharge pressure of the automatic water supply pump 15 and transmits the detected pressure signal to the control unit 104a.

The water passage 16 is a first flow path 51 composed of a pipeline from the discharge port of the raw water pump 11 to the filtration tank 22, and a second flow path composed of a pipeline from the filtration tank 22 to the sterilizer 13. 52, a third flow path 53 composed of a pipeline from the secondary side of the sterilizer 13 to the treatment water tank 14, and a third flow path from the treatment water tank 14 to the suction port of the automatic water supply pump 15. The fourth flow path 54, the fifth flow path 55 composed of the pipeline from the discharge port of the automatic water supply pump 15 to the first flow path 51, and the sixth flow path composed of the pipeline from the filtration tank 22 to the discharge portion. A second flow path 56 composed of a flow path 56, a seventh flow path 57 composed of a pipeline branching from the second flow path 52 to the discharge portion, and a regeneration tube 41 connected from the regeneration tank 23 to the filtration tank 22. It is provided with 8 flow paths 58.

One end 41a of the regeneration tube 41 is arranged in the regeneration tank 23, and the other end 41b is connected to an ejector 42 connected to the first port 31 of the filtration tank 22.

The flow path switch unit 17 includes a first three-way valve 61, a second three-way valve 62, a plurality of on-off valves 63a to 63c, and a control valve 64. The flow path switch unit 17 opens and closes the valves 61, 62, 63a to 63c and controls the control valves 64 to connect the eight flow paths 51 to 58 of the water passage 16 to the first port 31, the second port 32, and the third port. A plurality of processing modes are switched by connecting to or communicating with any of a total of four ports 38 and the fourth port 39, or by closing the flow path.

The first three-way valve 61 and the second three-way valve 62 are, for example, electromagnetic valves having three ports, and switch the connection state of a plurality of flow paths according to the control of the control unit 102a. The first three-way valve 61 has a port connected to the raw water pump 11 via the first flow path 51, a port connected to the discharge side of the automatic water supply pump 15 via the fifth flow path 55, and a control valve 64. It has a port that is selectively connected to a plurality of ports of the filtration tank 22 via the above.

The second three-way valve 62 has a port connected to the sterilizer 13 via the second flow path 52, a port connected to the discharge portion via the seventh flow path, and a filtration tank via the control valve 64. It comprises a port selectively connected to a plurality of 22 ports.

In the present embodiment, the first flow path 51 on the raw water side and the fifth flow path 55 from the automatic water supply pump 15 can be switched by opening and closing the first three-way valve 61 and switching the control valve 64, so that the port 31 can be switched. , 32, 38, 39. Further, by opening and closing the second three-way valve 62 and switching the control valve 64, the second flow path 52 on the treatment water tank side and the seventh flow path 57 on the discharge side can be switched to ports 31, 32, 38, 39. It is connected.

The plurality of on-off valves 63 are, for example, electromagnetic on-off valves 63, and the connection state of the plurality of flow paths is switched according to the control of the control unit 102a.

The control panel 102 includes a storage unit 71 that stores various data, a control unit 102a that controls the operation of each unit based on a predetermined program, and an interface unit 73.

The storage unit 71 stores, for example, various programs, various reference values, and threshold values as information necessary for control. Further, the storage unit 71 stores the remaining amount data indicating the remaining amount of the recycled material and the number of times of the regeneration processing performed after the recycled material is replenished. By the control of the control unit 102a, the remaining amount data is updated every time the reproduction process is performed. The various threshold values and set values including the notification reference value Ne are configured so that the user can arbitrarily change the settings by, for example, the operation input by the operation input unit 73a.

For example, the control unit 101a performs various arithmetic processes based on the detected values detected by each sensor, and controls the frequency of the inverter to shift operation or stop the motor of the raw water pump 11. Specifically, the control unit 101a controls the operation of the pump by transmitting a control signal to each inverter and controlling the inverter corresponding to the raw water pump 11 at a predetermined timing.

The control unit 102a performs various arithmetic processes based on the detection value and the operation input detected by the sensor, and switches the connection state of the flow path by opening and closing the valves 63a to 63d of the flow path 16. Further, the control unit 103a switches the connection state of the flow path by opening and closing the valve of the control valve 64. The water treatment device 10 performs a plurality of types of treatment by setting these flow paths and controlling the operations of the pumps 11 and 15. Specifically, the water treatment device 10 performs a filtration treatment, a backwash treatment, a regeneration treatment, a washing treatment, and a water injection treatment under the control of the control units 101a, 102a, 103a, 104a.

Further, the control unit 102a detects the signal from the float switch 27 and the reproduction signal from the control valve 64, and counts the number of reproductions. The control unit 102a updates the remaining amount data N stored in the storage unit 71 and decrements the remaining amount data N by 1 each time the reproduction process is performed. When the remaining amount data N drops to the preset notification reference value Ne, the control unit 72 performs notification processing. As a notification process, the control unit 72 turns on, for example, the recycled material shortage lamp 73d provided in the interface unit 73, or outputs an external signal.

The interface unit 73 is provided on the control panel 102. The interface unit 73 includes an operation input unit 73a and a display unit 73b.

The operation input unit 73a is various input buttons and switches such as a power switch, a remaining amount count button, and a remaining amount reset button for operating the power ON / OFF, and is configured to allow the user to input various settings and instructions. Has been done.

The display unit 73b includes, for example, a PLC lamp 73c and a recycled material shortage lamp 73d.
The recycled material shortage lamp 73d is turned on under the control of the control unit 102a to perform notification processing for notifying the user of the insufficient remaining amount of the recycled material. The PLC lamp 73c is turned on under the control of the control unit 102a, and displays the number of remaining times of the recycled material.

Hereinafter, various operations performed by the water treatment apparatus 10 according to the present embodiment will be described with reference to FIGS. 6 to 10. 6 shows a filtration treatment, FIG. 7 shows a backwash treatment, FIG. 8 shows a regeneration treatment, FIG. 9 shows a washing treatment, and FIG. 10 shows a water injection treatment.

FIG. 6 is an explanatory diagram showing a filtration process. The filtration treatment is a treatment in which raw water is pumped up and passed through a filtration tank 22 to capture cations such as iron and manganese by ion exchange and soften the raw water.

As shown in FIG. 6, as a filtration process, the control unit 103a controls the control valve 64, closes the first port 31, connects the second port 32 to the first flow path 51 on the raw water side, and connects the third port 38. Is connected to the third flow path on the treatment water tank 14 side, and the fourth port 39 is closed. Further, the control unit 103a stops the ejector 42 and closes the eighth flow path 58.

In this state, the control unit 101a drives the raw water pump 11 at a predetermined timing. The control unit 101a drives the raw water pump 11 when it detects that the liquid level of the treated water tank 14 has dropped to a predetermined pump start reference value based on, for example, the liquid level information detected by the liquid level sensor 47. By driving the raw water pump 11, the raw water is pumped and flows into the filtration tank 22 and the sterilizer 13. The raw water flows into the filtration tank 22 and is filtered to remove impurities such as sterilization, iron removal, manganese removal and solid matter, and becomes purified water L2 (treated water). Then, the treated water L2 enters the water collecting pipe 33 through the filter cap 35, and is sent to the treated water tank 14 from the third port 38 at the upper end of the water collecting pipe 33.

FIG. 7 is an explanatory diagram showing a backwash process. In the backwash treatment, water is flowed from the water collecting pipe 33, and the filter material is backwashed by passing water through the ion exchange resin of the filter tank 22 to flow from the bottom to the top and draining the filter material. It is a process to discharge iron oxide and fine particles (impurities) accumulated inside. Further, the filter material can be loosened by performing this backwashing treatment before the regeneration treatment.

As shown in FIG. 7, in the backwash process, the control unit 103a controls the control valve 64, closes the first port 31, connects the second port 32 to the sixth flow path 56 on the drain side, and makes a third. The port 38 is connected to the first flow path 51 on the raw water side, and the fourth port 39 is closed. In this state, when the control unit 101a drives the raw water pump 11 at a predetermined timing to send the raw water L1 to the secondary side, the raw water L1 flows downward from the third port 38 of the water collecting pipe 33 and passes through the filter cap 35. It flows out from the water collecting pipe 33, is sent from the bottom to the top of the filtration tank 22, and is drained from the second port 32. By this backwashing treatment, raw water is flowed from the bottom to the top of the filter tank 22 to wash the filter medium and discharge the oxides and fine particles accumulated in the filter tank 22.

For example, when the cation concentration becomes high during the filtration treatment, the control unit 103a performs a regeneration treatment in which a regenerating liquid such as a high-concentration saline solution is passed through and ion exchange between the resin and the cation and sodium is performed again. conduct. As a regeneration process, the control unit 103a replenishes the filtration tank 22 with high-concentration salt water S2 as a regeneration liquid at a predetermined timing from the regeneration tank 23.

FIG. 8 is an explanatory diagram showing a reproduction process. The regeneration treatment is a treatment in which high-concentration salt water is passed through a filter material to separate iron and manganese that have been removed from the raw water and adhered to the filter material from the filter material and discharged.

Specifically, as shown in FIG. 8, in the regeneration process, the control unit 103a controls the control valve 64, communicates the first port 31 with the regeneration tube 41 and the raw water pump 11, and closes the second port 32. .. Further, the third port 38 of the water collecting pipe 33 is closed, and the fourth port 39 is connected to the sixth flow path 56 on the drainage side. By driving the ejector 42 in this state, the control unit 103a sends the high-concentration salt water from the regeneration tank 23 and the raw water from the raw water pump 11 into the filtration tank 22. For example, raw water + high-concentration salt water ≈ 8% to 12%. The salt water and the raw water flow from the top to the bottom in the filtration tank 22, flow into the water collecting pipe 33 through the filter, and are discharged through the fourth port 39. Regenerated wastewater contains high-concentration salt water and cations such as iron and manganese. The regeneration process lowers the liquid level in the regeneration tank 23.

FIG. 9 is an explanatory diagram showing a cleaning process. The cleaning treatment is a treatment in which the residual salt remaining in the filtration tank 22 is discharged to the outside at a low speed and a new raw water L1 is injected, and is also called an extrusion treatment.

In the cleaning process, the control unit 103a controls the control valve 64, closes the first port 31, and communicates the second port 32 with the first flow path 51 on the raw water pump 11 side. Further, the control unit 103a closes the third port 38 and communicates the fourth port 39 with the sixth flow path 56 on the drainage side. In this state, by driving the raw water pump 11, the raw water L1 flows from the top to the bottom in the filtration tank 22, flows into the water collecting pipe 33 through the filter cap 35, and is discharged from the fourth port 39. By this cleaning treatment, the residual salt remaining in the filtration tank 22 is discharged to the outside.

FIG. 10 is an explanatory diagram showing a water injection treatment. The water injection treatment is a treatment in which the treated water L2 is put back into the reclaimed tank 23 and stored by causing the treated water L2 to flow back into the reclaimed tank 23.

In the water injection process, the control unit 103a controls the control valve 64, closes the first port 31, and communicates the second port 32 with the first flow path 51 on the raw water pump 11 side. Further, the control unit 103a connects the third port 38 to the treatment water tank 14, connects to the regeneration tube 41 via the ejector 42, and closes the fourth port 39. In this state, when the raw water pump 11 is driven by the control unit 101a and the ejector 42 is driven by the control unit 103a, the raw water L1 flows from the top to the bottom in the filtration tank 22 and flows into the water collecting pipe 33 through the filter cap 35. do. Then, a part of the treated water L2 after filtration is sent from the third port 38 to the treated water tank 14 through the second flow path 52 and the third flow path 53, and a part is passed from the ejector 42 through the regeneration tube 41. It is sent into the regeneration tank 23. The control unit 103a closes the flow path between the third port 38 and the regeneration tube 41 after a predetermined fixed time has elapsed, and stops water injection. By this water injection treatment, the treated water is replenished to the regeneration tank 23 with a certain amount of treated water.

When the above-mentioned regeneration process and water injection process are performed, the control unit 102a performs a notification process for replenishing the recycled material at a predetermined timing. FIG. 11 is a flowchart showing a notification process of the control unit of the water treatment device according to the present embodiment. As shown in FIG. 11, the control unit 102a detects the start of normal operation in step ST1. In normal operation, for example, the control unit 102a causes the PLC lamp to emit white light and displays the number of reproducible times as the remaining amount data N. When the normal operation is started (Yes in step ST1), the reproduction instruction is detected (step ST2). When the control unit 102a detects a reproduction instruction (Yes in step ST2), it performs reproduction processing (step ST3) and detects a reproduction processing signal of the flow path switch unit 17 (step ST4). When the reproduction processing signal is detected (Yes in step ST4), the remaining amount data N stored in advance in the storage unit 71 is updated (step ST5). The remaining amount data N is a number set in proportion to the amount of the recycled material, for example, and is set at the time of replenishing the recycled material and is decremented by 1 for each recycling process to increase the number of times corresponding to the remaining amount of the recycled material. show. Then, in step ST6, the control unit 102a determines whether or not the remaining amount data N has decreased to the preset notification reference value Ne of insufficient remaining amount, and when the remaining amount data N decreases to the notification reference value Ne. (Yes in step ST6), the control unit 102a performs notification processing (step ST7).

For example, if the notification reference value is 1, when the remaining amount of the recycled material reaches the amount of one recycling process, the notification process for urging the user to replenish the recycled material is performed. As the notification process, for example, the recycled material shortage lamp 73d, which is a notification lamp for notifying the remaining amount shortage, is turned on and an external signal is output.

After the notification process, the control unit 102a detects the instruction input of the count increase button or the reset button (step ST8). For example, the user replenishes the recycled material by receiving the notification process and recognizing the replenishment of the recycled material. Then, when the reclaimed material is replenished, the user inputs the remaining amount data N by pressing the count increase button on the operation input unit 73a, and resets the value to the number of times corresponding to the remaining amount after replenishment. At this time, the user can check the remaining amount data by putting salt into the regeneration tank 23 and visually observing the number of scales of the index unit 25. The remaining amount data N can be grasped. When the count increase instruction or reset instruction of the remaining amount data N is detected by the user's operation input (Yes in step ST8), the control unit 102a updates the remaining amount data N of the storage unit 71 (step ST9), and the notification process ends. (Step ST10). For example, in the present embodiment, as an example, when the reset button is pressed, the control unit 102a releases the external signal output, while the regenerated salt shortage lamp 73c maintains the lighting state. Then, when the reset button is pressed and held and the N value is updated, the recycled material shortage lamp 73c is turned off.

According to the water supply unit 1 according to the present embodiment, the following effects can be obtained. That is,
By providing the index unit 25 in the recycled tank 23, the remaining amount of the recycled material can be visually made visible. Furthermore, by encouraging the replenishment of recycled materials by notification processing, it is possible to prevent filtration defects due to insufficient recycled materials. Therefore, it is possible to stably supply iron-removed, manganese-removed, and softened treated water.

Further, by notifying the shortage of the recycled material by using an external signal, it is possible to notify the shortage of the recycled material even in an environment such as an unmanned room.

Further, by making it possible to arbitrarily set and change the notification reference value, it is possible to adjust the conditions of notification processing according to the usage environment of the user.

The present invention is not limited to each of the above embodiments as it is, and at the implementation stage, the components can be modified and embodied within a range that does not deviate from the gist thereof.

For example, in the above embodiment, an example of lighting a lamp is shown as a notification process, but the present invention is not limited to this. For example, a display monitor may be provided and data or a message may be displayed under the control of the control unit 102a to perform notification processing, or a speaker may be provided to perform notification processing by voice.

In the above embodiment, an example in which a plurality of control units 101a to 104a are provided on different control panels 101 to 104 is shown, but the present invention is not limited to this. For example, a part or all of the control units 101a to 104a are shared, a host control unit that controls a plurality of control units 101a to 104a is added, or a plurality of control units 101a to 104a can communicate with each other. The settings can be changed as appropriate depending on the device.

The present invention is not limited to the above embodiment, and can be variously modified at the implementation stage without departing from the gist thereof. In addition, each embodiment may be carried out in combination as appropriate, in which case the combined effect can be obtained. Further, the above-described embodiment includes various inventions, and various inventions can be extracted by a combination selected from a plurality of disclosed constituent requirements. For example, even if some constituent elements are deleted from all the constituent elements shown in the embodiment, if the problem can be solved and the effect is obtained, the configuration in which the constituent elements are deleted can be extracted as an invention.
The inventions described in the original claims of the present application are described below.
(1)
A reclaimed tank that is connected to a filter tank that accommodates the filter material and is configured to allow water to pass through, and a recycle tank that is configured to accommodate recycled material and water.
An index unit arranged in the reclaimed tank and showing the remaining amount of the reclaimed material, and
A water treatment device.
(2)
The regeneration tank is provided with an inner case inside.
The index unit has a scale indicating the amount of the regenerated material used in the regenerating treatment for replenishing the regenerated material in the filtration tank, and a number indicating the number of times of the regenerating processing corresponding to the remaining amount, according to (1). Water treatment equipment.
(3)
A reclaimed tank that is connected to a filter tank that accommodates the filter material and is configured to allow water to pass through, and a recycle tank that is configured to accommodate recycled material and water.
A control unit that performs a notification process for prompting the replenishment of the recycled material based on the remaining amount data regarding the remaining amount of the recycled material and the number of times of the recycling process of replenishing the filtered material with the recycled material and cleaning the filtered material. And equipped with a water treatment device.
(4)
A control unit that performs a notification process for prompting replenishment of the recycled material based on the remaining amount data regarding the remaining amount of the recycled material and the number of times of the recycling process of sending the recycled material to the filter tank and cleaning the filtered material. The water treatment apparatus according to (1) or (2).
(5)
It is equipped with an operation input unit that is configured to be able to set and update the remaining amount data, as well as.
The control unit detects a reproduction instruction in the reproduction process, updates the remaining amount data based on the number of times of the reproduction process, and performs the notification process when the remaining amount data drops to a predetermined notification reference value. The water treatment apparatus according to (3) or (4).
(6)
To store the remaining amount data regarding the remaining amount of the recycled material in the recycled material and the recycled tank which is connected to the filter tank configured to allow water to pass while accommodating the filter material and which is configured to accommodate the recycled material and water. A notification process for urging the replenishment of the recycled material based on the number of times of the regeneration process of replenishing the recycled material in the filter tank and cleaning the filtered material, and the remaining amount data and the number of times of the recycled material. And to be equipped with a water treatment method.

10 ... water treatment device, 11 ... raw water pump, 12 ... filtration device, 13 ... sterilizer, 14 ... treatment water tank, 15 ... automatic water supply pump, 16 ... water passage, 17 ... flow path switch unit, 18 ... control panel, 21 ... well, 22 ... filter tank, 23 ... regeneration tank, 23a ... case, 23b ... cover, 23c ... drain port, 23d ... inner case, 23e ... slit hole, 23f ... filter, 24 ... base, 25 ... index section, 25a ... Scale line, 25b ... Number, 27 ... Float switch, 31 ... 1st port, 32 ... 2nd port, 33 ... Collection pipe, 34 ... Pipe, 35 ... Filter cap, 35a ... Slit, 36 ... Branch pipe, 37 ... branch pipe, 38 ... 3rd port, 39 ... 4th port, 41 ... regeneration tube, 41a ... one end, 41b ... other end, 41c ... check, 42 ... ejector, 43 ... flow path, 44 ... chemical tank, 45 ... Chemical pump, 46 ... Flow sensor, 47 ... Liquid level sensor, 48 ... Pressure sensor, 51 ... First flow path, 52 ... Second flow path, 53 ... Third flow path, 54 ... Fourth flow path, 55 ... 5th flow path, 56 ... 6th flow path, 57 ... 7th flow path, 58 ... 8th flow path, 61 ... 1st three-way valve, 62 ... 2nd three-way valve, 63 (63a-63c) ... on-off valve , 64 ... control valve, 71 ... storage unit, 72 ... control unit, 73 ... interface unit, 73a ... operation input unit, 73b ... display unit, 73c ... PLC lamp, 73d ... recycled material shortage lamp, L1 ... raw water, L2 ... Treated water (purified water), S1 ... salt (regenerated material), S2 ... salt water (regenerated liquid).

Claims (6)

Is connected to a filtration tank that is configured to be able to water communicating with houses filtration media, wherein the filter tank configured to accommodate a solid der Ru recycled material and water which constitutes the regenerated liquid to be replenished in the case, the A regeneration tank , which has an inner case, which is arranged inside the case and extends along the vertical direction.
An index unit provided on the outer surface of the inner case, having a number corresponding to the amount of the recycled material provided on the outer surface of the inner case and arranged on the outside of the inner case, and indicating the remaining amount of the recycled material.
A filter provided at a predetermined height in the case, which partitions the space in the case up and down and suppresses the passage of the recycled material.
A water treatment device. The index portion extends along the vertical direction, possess a scale indicating the amount of the recycled material, the numeral indicating the number of reproduction process corresponding to the remaining amount of the recycled material,
The recycled material is salt and
The water treatment apparatus according to claim 1, wherein the filter is made of a non-woven fabric. According to claim 1, the inner case is formed in a tubular shape having a diameter smaller than that of the case, and one end of a regeneration tube connected to the filtration tank is arranged at a position below the filter in the inner case. The water treatment device described. The water treatment apparatus according to claim 3, wherein the inner case has a slit hole in the peripheral wall, which is configured to prevent the passage of solids constituting the recycled material and allow fluid to flow. A control unit that performs a notification process for prompting replenishment of the recycled material based on the remaining amount data regarding the remaining amount of the recycled material and the number of times of the recycling process of sending the recycled material to the filter tank and cleaning the filtered material. The water treatment apparatus according to claim 1. It is equipped with an operation input unit that is configured to be able to set and update the remaining amount data, as well as.
The control unit detects a reproduction instruction in the reproduction process, updates the remaining amount data based on the number of times of the reproduction process, and performs the notification process when the remaining amount data drops to a predetermined notification reference value. The water treatment apparatus according to claim 5.

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