JPH07299455A - Water producing apparatus for artificial dialysis - Google Patents

Abstract

PURPOSE:To simplify a program change and to automate an original program resetting by providing the above apparatus with a second control mechanism which arbitrarily changes the filtration operation end time of the control mechanism of a pretreating device, starts the operation at the prolonged time of the control mechanism after lapse of the change time and executes the execution plan of the control mechanism. CONSTITUTION:A control board 1 is provided with the control mechanism I which executes the weekly program to timewisely control and execute the respective operations of the apparatus for producing water for artificial dialysis. This control board controls, operates and stops respective sections, such as pretreating device 8, high-pressure pump 7, separating membrane 9 automatic valve 10 for filtrate, automatic valve 11 for discharging backward washing water, backward washing pump 13 and automatic valve 15 for backward washing. The control board 1 is provided with the control mechanism II which arbitrarily changes the filtration operation end time of the separating membrane 9 in this control mechanism I and resets the control mechanism I to the prescribed program after lapse of the change time. As a result, the changing of the filtration end time of the separating membrane 9 is made possible and the original plan is automatically reset after lapse of the time.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial dialysis water producing apparatus capable of changing a preset execution plan at any time by a simple operation. More specifically, the filtration operation of a separation membrane can be performed according to a predetermined execution plan. In case of emergency operation, it is possible to extend the artificial dialysis water production operation even in an emergency, and after the extension operation is completed, a separate control mechanism automatically returns to normal operation, ensuring safe and secure operation even in unattended operation. TECHNICAL FIELD The present invention relates to an artificial dialysis water production apparatus in which the production of artificial dialysis water is controlled.

[0002]

2. Description of the Related Art Membrane separation technology has been variously developed and applied as a medical separation membrane. For example, in blood extracorporeal circulation treatment, it is used in blood dialysis therapy for removing blood microthrombus and in large amounts during dialysis. Development of membranes for medical ultrapure water that produces dialysate is being made. In addition, it is often used in the production of ultrapure water for medical use, purified water for artificial dialysis, hand-washing water before surgery, sterile water for medium-sized rooms, sterile water and pyrogen-free water, etc. Development of a manufacturing device for medical water and the like or a control system therefor has been made. For example, in order to produce medical water such as pre-operative hand wash water and purified water for artificial dialysis using a separation membrane, for example, softening and activated carbon treatment are performed as pretreatment of raw water, and the activated carbon treated water is separated by a separation membrane. It is filtered, the filtrate is stored in a tank, and irradiated with an ultraviolet germicidal lamp to be supplied as medical water.

When such a device is an artificial dialysis water producing device, the produced filtrate is supplied to an artificial dialysis treatment device or the like by a supply pump provided in the device. Further, in order to balance the supply and demand of the filtrate, in general, an implementation plan for artificial dialysis water production based on a treatment plan for artificial dialysis treatment is established, and the production of artificial dialysis water is controlled based on this implementation plan. is doing. For example, the filtration operation with the separation membrane is performed for a certain time at a predetermined time, the pretreatment device and the separation membrane are paused for the next certain time, and the regeneration operation (Note 1) of the pretreatment device is continued for a certain time. Further, it is an implementation plan of 24 hours so that the pretreatment device and the separation membrane are stopped for a certain period of time. This day's implementation plan (Daily Program) can be further implemented from Monday to Saturday, and the resting operation of the separation membrane can be performed on Sunday. In such a case, this week's implementation plan can be changed to Weekly Program. Sometimes called. This weekly program generally performs automatic control by controlling the supply pump in the device.

[0004]

When such a weekly program is carried out, it is convenient to obtain a filtrate based on the plan of artificial dialysis treatment even by an unmanned operation, but it is urgent to change the filtrate. When it is necessary to increase the production, for example, when increasing the production of the filtrate at night or on holidays when the weekly program corresponds to the idle operation of the pretreatment device and the separation membrane, stop the weekly program and stop the filtration operation by the separation membrane. It had to be done manually. At the end of the operation, you have to return to the weekly program again, and you are forced to perform manned operations until the end of the operation. In addition, since the safety device generally operates when the remaining amount of the storage tank falls below a certain amount, the night or holiday weekly program may cause the storage tank to run during the rest operation period of the pretreatment device and separation membrane or the regeneration operation period of the pretreatment device. When the remaining filtrate is used, the liquid level sensor is activated, and when the amount of the filtrate in the tank falls below a certain amount, an alarm is issued or the use of the supply pump is forcibly stopped. Therefore, in case of using the artificial dialysis water production device in an emergency,
The supply pump must be used after releasing these functions, and the operation according to the manual must be performed. Therefore, when a person who is unfamiliar with the operation uses the artificial dialysis water manufacturing apparatus for nighttime or holidays, it may cause trouble during treatment. Under such circumstances, the development of an artificial dialysis water production device that can change a preset program by a simple operation without impairing various functions of the artificial dialysis water production device and can automatically return to the original program after the change. There is a strong demand.

[0005]

[Means for Solving the Problems] In view of such a current situation,
As a result of detailed examination of various control mechanisms of the artificial dialysis water producing apparatus, the present inventors have found that the provision of a separate control mechanism can solve such a problem, and have completed the present invention.

That is, according to the present invention, there is provided a control mechanism I for performing the regeneration operation of the pretreatment apparatus, the filtration operation by the separation membrane, and the suspension operation of the pretreatment apparatus and the separation membrane at a predetermined time based on a preset execution plan. , The end time of the filtering operation is arbitrarily changed, and after the change time has elapsed, the operation of the control mechanism I at the extension time is started to start the control mechanism I.
An artificial dialysis water producing apparatus having a control mechanism II for returning to the implementation plan of 1. Further, a control mechanism I for performing the regeneration operation of the pretreatment device, the filtration operation by the separation membrane, and the suspension operation of the pretreatment device and the separation membrane at a predetermined time based on a preset implementation plan, and an arbitrary suspension operation The filtering operation is performed for an arbitrary time from the time, and after the end time of this filtering operation has elapsed, the operation at the end time in the implementation plan of the control mechanism I is started to start the control mechanism I.
An artificial dialysis water producing apparatus having a control mechanism II for returning to the implementation plan of 1. Further, in the case where the implementation plan of the control mechanism I partially includes a part of the filtration operation by the separation membrane, the operation of suspending the pretreatment device and the separation membrane, and the regeneration operation of the pretreatment device, the control mechanism I
When I arbitrarily changes the end time of the filtering operation, if the changed end time corresponds to the reproduction operation of the execution plan, the pause operation is stopped, and after the end time of the filtering operation has elapsed. The present invention provides an artificial dialysis water production apparatus characterized by starting the regeneration operation in the implementation plan of the control mechanism I. Hereinafter, the present invention will be described in detail.

[0007]

EXAMPLE An artificial dialysis water producing apparatus according to the present invention will be described with reference to FIG. However, the present invention is not limited to these.

The artificial dialysis water producing apparatus of the present invention is provided with a water softener 4, an activated carbon filter 5, a separation membrane 9 and a storage tank 12 for pretreatment of general raw water, and the storage tank is equipped with a tank. A liquid level sensor is installed to detect the remaining amount inside. Further, a supply pump 15 for transferring the filtrate to the supply facility is installed. If necessary, a backwashing / cleaning mechanism to prevent clogging of the separation membrane caused by operation, a mechanism for switching the separation membrane between operation and stop using the data of the liquid level sensor as an index, or pretreatment using these A mechanism for controlling the operation / stop of the device 8 is installed. This will be described below with reference to the system flow of FIG. Reference numeral 1 is a control board, and broken lines are control lines. First of all, raw water is compressed by a raw water pressure pump 2 into a pre-filter 3, a water softener 4 and an activated carbon filter 5.
Where the raw water is pretreated. The raw water which has been softened and filtered by activated carbon is sent as activated carbon treated water through a check filter 6 to a separation membrane 9 by a high-pressure pump 7 and is filtered by the separation membrane 9 to produce filtered water. Further, the manufactured filtered water is transferred to the storage tank 12 through a pipe for transferring to the storage tank 12. Storage tank 12
The filtered liquid is transferred to the outside of the device by the supply pump 15.

The supply pump 15 of the artificial dialysis water producing apparatus according to the present invention is provided with a weekly program for controlling the operating time of the supply pump in order to supply the artificial dialysis according to the schedule. The weekly program mentioned here is an implementation plan in which each operation of the artificial dialysis water producing apparatus is controlled in advance in time. For example, AM5: 00 as a daily program
To PM 11:00, perform the filtration operation with the separation membrane,
From 11:00 PM to 2:00 AM the following time, the pretreatment device and the separation membrane are suspended, and the time is changed from 2:00 AM to A.
An example is the case where M4: 30 is used as the regeneration operation (Note 1) of the pretreatment device, and AM4: 30 to AM5: 00 is used as the pause operation of the pretreatment device and the separation membrane.
This daily program can be implemented as a weekly program by carrying out the daily program from Monday to Friday or Saturday and suspending the pretreatment device and the separation membrane from Sunday or Saturday to Sunday.

The control mechanism I according to the present invention refers to each operation of the regeneration operation of the pretreatment device according to the execution plan preset by the daily program or the weekly program, the filtration operation by the separation membrane, and the pause operation of the pretreatment device and the separation membrane. This is to perform temporal control.

As the filtration operation using the separation membrane in the implementation plan, the raw water pressurizing pump 2, the water softening device 4, the activated carbon filtration device 5, the separation membrane 9, the high pressure pump 7, and the backwash pump 13 are set to the operating state. The operation of the separation membrane 9 is further finely controlled by an index from a liquid level sensor provided in the storage tank 12, and the liquid level sensor measures the amount of the residual filtrate in the storage tank 12 and becomes a certain amount or less. Then, the separation membrane 9 is activated. The separation membrane 9 is backwashed once every 30 minutes to 3 hours to prevent clogging.

As a regenerating operation of the pretreatment device 8 in the implementation plan, the raw water pressurizing pump 2, the water softening device 4, and the activated carbon filtration device 5 are activated, and the separation membrane 9 and the backwash pump 13 are stopped.

As the operation of stopping the pretreatment device 8 and the separation membrane in the implementation plan, the raw water pressurizing pump 2, the water softening device 4, the active filtration device 5, the high pressure pump 7, the separation membrane 9 and the backwash pump 13 are all stopped. Let

The control mechanism II of the present invention is a separate control that arbitrarily changes the end time of the filtration operation by the separation membrane in the control mechanism I, and returns to the predetermined execution plan of the control mechanism I after the change time has elapsed. It is a mechanism. The control mechanism II operates as follows, based on the case where the above-mentioned weekly program is executed. That is, when the end time of the filtration operation by the separation membrane according to the implementation plan is PM 11:00, PM
The end time of the filtering operation is set to PM 11:30 by setting the extended 4 hours and 30 minutes by the control mechanism II at 7:00 PM.
To change. Originally, PM 11:30 is the time period for the operation of stopping the pretreatment device and the separation membrane, so PM 11:00
From PM to PM 11:30, the pause operation is omitted and PM1
The operation plan is restored by performing a pause operation from 1:30 to 2:00 PM the following day.

In the control mechanism II of the present invention, when the end time of the filtration operation by the separation membrane in the control mechanism I is arbitrarily changed, the execution plan scheduled to be performed at the change time can be stopped. . That is, when the end time of the filtering operation by the separation membrane is 11:00 PM, P
By setting the extension time to 8 hours by the control mechanism II at M7: 00, the end time of the filtering operation can be changed to the next AM 3:00. For this reason, the originally planned PM
From 11:00 to 2:00 AM, the resting operation of the pretreatment device and the separation membrane is stopped, and the filtration operation by the separation membrane is performed during this period. After that, after the change time AM2: 30 has elapsed, a regenerating operation of the pretreatment device is performed in order to return to the predetermined implementation plan of the control mechanism I.

The control mechanism II of the present invention can start the filtration operation of the separation membrane in the idle operation of the pretreatment device and the separation membrane in the implementation plan of the control mechanism I. For example, in the case where the weekly program is performing a resting operation of the pretreatment device and the separation membrane all day, the filtration operation is performed by setting the start time and the end time of the filtration operation by the separation membrane by the control mechanism II. After that, carry out the predetermined operation of the implementation plan from the end time. In this case, it may be set in advance so that the regeneration operation of the pretreatment device is performed for a certain period of time after the filtration operation by the separation membrane by the control mechanism II is completed.

[0017]

According to the artificial dialysis water producing apparatus of the present invention, the execution plan according to the preset daily program or the weekly program can be arbitrarily changed by a simple operation. For this reason, the artificial dialysis water production operation can be extended even in an emergency, and after the extension operation is completed, a separate control mechanism automatically returns to normal operation, which ensures reliable control of the artificial dialysis water production even with unmanned operation. To be done. For this reason, even when an artificial dialysis water producing apparatus is used by someone who is not familiar with handling the apparatus in an emergency, the artificial dialysis water producing apparatus can be operated safely without impairing various functions.

[Brief description of drawings]

FIG. 1 shows an example of a system flow of an artificial dialysis water producing apparatus of the present invention.

[Explanation of symbols]

 1 Control panel 2 Raw water pressurizing pump 3 Pre-filter 4 Soft water device 5 Activated carbon filtration device 6 Check filter 7 High pressure pump 8 Pretreatment device 9 Separation membrane 10 Filtration liquid automatic valve 11 Backwash water discharge automatic valve 12 Storage tank 13 Backwash pump 14 Automatic backwash valve 15 Supply pump

Claims (3)

[Claims] 1. A control mechanism I for performing a regeneration operation of a pretreatment device, a filtration operation by a separation membrane, and a rest operation of the pretreatment device and the separation membrane at a fixed time based on a preset implementation plan, and a filtration operation. You can change the end time of
Further, the artificial dialysis water production apparatus having a control mechanism II for starting the operation of the control mechanism I at the extension time after the change time and returning to the implementation plan of the control mechanism I. 2. A control mechanism I for performing a regeneration operation of the pretreatment device, a filtration operation by a separation membrane, and a suspension operation of the pretreatment device and the separation membrane at a fixed time based on a preset implementation plan, and a suspension operation. A control mechanism that causes the filtering operation to be performed for an arbitrary time from any time, and after the end time of this filtering operation has elapsed, starts the operation at the end time in the execution plan of the control mechanism I and returns to the execution plan of the control mechanism I. An artificial dialysis water production apparatus having II. 3. The implementation plan includes, in part, a portion in which a filtration operation by a separation membrane, a pretreatment device and a separation membrane pause operation, and a regeneration operation of the pretreatment device are carried out in this order, and the control mechanism II comprises: When the end time of the filtration operation is arbitrarily changed and the changed end time corresponds to the regeneration operation of the pretreatment device of the above-mentioned implementation plan, the pretreatment device and the separation membrane may be omitted and the separation operation may be omitted. An artificial dialysis water production apparatus, wherein the regeneration operation of the pretreatment apparatus in the implementation plan of the control mechanism I is started after the end time of the filtration operation by the membrane has elapsed.