JP7104320B2 - Sodium hypochlorite activator - Google Patents

Description

In general, the present invention is sodium hypochlorite activated water that can be used for sterilizing, disinfecting, and cleaning microorganisms that contaminate various devices or foodstuffs in various fields such as food processing, agriculture and fisheries, and medical care. (Hereinafter, it may be simply referred to as "active water".) It relates to a sodium hypochlorite activator for producing.

Conventionally, for example, in the medical field, for sterilization, disinfection, and cleaning of blood dialysis equipment, it has been produced by adding an acid such as acetic acid to sodium hypochlorite with a sodium hypochlorite activator. It is practiced to use sodium hypochlorite activated water.

Currently, in a dialysis facility, for example, as shown in FIG. 6, a dialysate supply system 100 capable of simultaneously performing dialysis treatment for a large number of patients of at least 2 or more, usually 20 to 50, is available. It has been adopted.

Explaining the dialysate supply system 100 in this example, the multi-person dialysate supply device 110 is simultaneously installed on the bedside of the patient by the multi-person dialysate pipe 130 provided with the endotoxin filter 120 for each patient. The dialysate is supplied to the monitoring device 140. The dialysis monitoring device 140 arranged on the bedside of the patient is connected to a dialysis machine, supplies dialysate to the dialysis machine, and monitors the dialysis machine.

The dialysate supply system 100 includes an RO device (reverse osmosis method purified water production device) 60, a powder dissolution device 70 (for example, agent A dissolution device 70a, agent B dissolution device 70b), and a sodium hypochlorite activation device (disinfection). It is equipped with a liquid preparation device) 1 and the like, and each device operates in cooperation with each other. The various devices constituting the dialysate supply system 100 are frequently sterilized, disinfected, washed, and the like.

That is, the multi-person dialysate supply device 110 operates the RO device 60 and the powder dissolving device 70 (A agent dissolving device 70a, B agent dissolving device 70b) to transfer the dialysate to the multi-person dialysate pipe 130. The RO device 60 and the sodium hypochlorite activating device 1 are operated as necessary to supply reverse osmosis water (RO water), activated water, etc. into the multi-person dialysate pipe 130. Sterilization, disinfection, and cleaning in the dialysis monitoring device 140 that is fed and connected to the dialysate pipe 130 for a large number of people (hereinafter, may be simply referred to as "sterilization", "disinfection", or "cleaning"). And so on.

The configuration, function, and the like of the sodium hypochlorite activator are described in, for example, Patent Documents 1, 2, and 3, but general sodium hypochlorite activation device used in a dialysis facility is used. The device will be described with reference to FIG. 7 attached to the present application.

The sodium hypochlorite activating device 1 is RO from the RO device 60 that supplies raw water for dilution (usually, “RO water” is used, hereinafter may be referred to as “RO water”) into the device. Water is taken in to prepare active water (sodium hypochlorite active water) in which sodium hypochlorite is activated and bactericidal activity is enhanced.

That is, in the sodium hypochlorite activating device 1, the RO water from the RO device 60 is connected to the RO water supply line 61 via the RO water supply flow path L1 to activate the sodium hypochlorite activating device 1. Supplied in. An electromagnetic valve 31 is provided in the RO water supply flow path L1, and the supply of RO water is controlled by opening and closing the solenoid valve 31. The opening and closing of the solenoid valve 31 is usually performed by the control device 200 by inputting an operator's instruction from an operation unit (not shown) to the control device (control circuit) 200 as a control means. When the control device 200 detects an abnormality in the sodium hypochlorite activating device 1, the solenoid valve 31 is closed and the supply of RO water is stopped.

The downstream side of the RO water supply flow path L1 is branched in the first and second directions, and the first is passed through the first and second constant flow valves 2 and 3 as the RO water flow rate adjusting means, respectively. , Sodium hypochlorite dilution mixing channel (first dilution mixing channel) L2 provided with first and second mixers 7 and 11 as a second dilution mixing means, acid dilution mixing channel (first dilution mixing channel). RO water is supplied to L3 (dilution mixing channel of 2).

The supply of the sodium hypochlorite stock solution to the first dilution mixing flow path L2 is performed by the first injection section 4 provided downstream of the first constant flow valve 2. That is, in the first injection section 4, as a means for adding sodium hypochlorite, the sodium hypochlorite stock solution is put into the RO water stream which is the raw water for dilution by the first stock solution tank 5 to the first liquid feed pump 6. Infused. The first liquid feed pump 6 is operated under the control of the control device 200, and the injection amount of the sodium hypochlorite stock solution is adjusted.

The sodium hypochlorite stock solution injected into the dilution RO water is sufficiently stirred and mixed with the dilution RO water in the first mixer 7 provided downstream from the first injection section 4. For example, the concentration of the sodium hypochlorite stock solution is 6 w / w%, and its pH is 12.4. Further, a concentration sensor (for example, a conductivity sensor) 13 for detecting the concentration of the sodium hypochlorite diluent is installed on the downstream side of the first mixer 7.

The second dilution mixing flow path L3 is provided with a second injection section 8 located downstream of the second constant flow valve 3. In the second injection section 8, the acid stock solution is injected from the second stock solution tank 9 into the RO water stream which is the dilution raw water by the second liquid feed pump 10 as the acid addition means. Like the first liquid feeding pump 6, the second liquid feeding pump 10 operates under the control of the control device 200, and the injection amount of the acid stock solution is adjusted. Acetic acid is preferable as the acid for pH adjustment, and therefore, it may be simply referred to as "acetic acid" below. For example, acetic acid having a concentration of 30 w / w% can be used as the acid stock solution, but the acid stock solution is not limited to this.

The acetic acid injected into the dilution RO water is sufficiently stirred and mixed with the dilution RO water in the second mixer 11 provided downstream from the second injection section 8. For example, as for the supply amount of the acid stock solution, the pH of the active water S is detected by the pH sensor 21 installed in the active water storage tank 20, and the supply amount of the acid is controlled.

The sodium hypochlorite diluent and the acid diluent that have passed through the mixers 7 and 11 merge further downstream, and the diluent is provided with a third mixer 12 as a means for mixing the two diluents. It is introduced into the mixing flow path L4 and sufficiently stirred and mixed.

As described above, sodium hypochlorite in the active water S finally produced by mixing the diluted solution of sodium hypochlorite and the diluted solution of acid, which are individually diluted and mixed in RO water for dilution, is used. The concentration is set to 10 ppm and the pH is set to 5.0. The activated water S produced by the sodium hypochlorite activating device 1 in this manner passes through the activated water delivery flow path L5 and the solenoid valve 32, and the RO water from the RO device 60 is the RO water supply pipeline. It is supplied to the dialysate supply device 110 for a large number of people via the solenoid valve 62.

Japanese Unexamined Patent Publication No. 2001-321778 Japanese Unexamined Patent Publication No. 2004-351037 Japanese Unexamined Patent Publication No. 2003-236556

An example of the piping configuration from the chemical solution (sodium hypochlorite stock solution and acid stock solution) tank to the dilution mixing flow path in the sodium hypochlorite activation device 1 having the above configuration will be described. Conventionally, the undiluted solution tanks 5 and 9 are open containers that are interchangeably installed in the apparatus for convenience of use, as described in Patent Document 3 and as shown in FIG. 7 attached to the present application. It has a large-capacity main tanks 5a and 9a, and sub-tanks 5b and 9b which are closed containers fixedly installed at positions below the main tanks 5a and 9a in the direction of gravity.

Since the stock solution supply piping structures 50 (50A, 50B) from the stock solution tanks 5 and 9 to the dilution mixing channels L2 and L3 have the same configuration, refer to FIG. 8 and start from the sodium hypochlorite stock solution tank 5. The sodium hypochlorite stock solution supply pipe structure 50A leading to the dilution mixing flow path L2 will be described.

The main tank 5a and the sub tank 5b constituting the first stock solution tank 5 for the sodium hypochlorite stock solution are connected by a communication pipe (so-called siphon pipe) 41. One end 41a of the communication pipe 41 is inserted into the tank through the upper opening 5a1 of the main tank 5a and is detachably attached to the main tank 5a by the attachment 5a2. Further, the other end 41b of the communication pipe 41 is inserted into the sub tank 5b and is airtightly and liquidtightly attached to the upper part of the sub tank 5b by the first attachment portion 5b1.

Further, one end 42a of the air bleeding pipe 42 is airtightly and liquid-tightly attached to the sub tank 5b by the second attachment portion 5b2, and the other end 42b extends upward to the foam eliminating chamber 43 and The discharge container 45 is opened via an air bleeding valve (solenoid valve) 44.

In such a configuration, the main tank 5a and the sub tank 5b are communicated with each other by the communication pipe 41 with the undiluted solution, and the undiluted solution in the main tank 5a is supplied to the sub tank 5b by the communication pipe 41 by the principle of siphon. The inside of the sub tank 5b is filled with the undiluted solution, and the liquid level of the sub tank 5b is maintained at the same liquid level H as the liquid level of the main tank 5a by raising the air bleeding pipe 42.

In the above configuration, the undiluted solution in the sub tank 5b has a predetermined amount of undiluted solution in the dilution mixing flow path L2 at the injection section 4 by the undiluted solution supply pipe structure 50A having the undiluted solution supply pipe line 51 provided with the liquid supply pump 6. Infused. Therefore, the stock solution in the amount consumed in the sub tank 5b is automatically replenished from the main tank 5a through the communication pipe 41. When the undiluted solution from the main tank 5a contains air, such air is exhausted through the air vent pipe 42. The configuration of the sodium hypochlorite stock solution supply pipe structure 50A is also adopted for the acid stock solution supply pipe structure 50B (see FIG. 7) leading to the acid dilution mixing flow path L3 for the acid stock solution tank 9. ..

In the sodium hypochlorite activating device 1 having the above configuration, when the undiluted solution in the main tank 5a (9a) is consumed and depleted, then the undiluted solution in the sub tank 5b (9b) is gradually consumed. When the remaining amount of the sub tank 5b (9b) becomes equal to or less than a predetermined amount, the remaining amount detecting means installed in the sub tank 5b (9b), for example, the float switch 46 is activated and the undiluted solution is consumed in the main tank 5a (9a). To the controller 200 that it is necessary to replace it with a new tank. The control device 200 displays this on the display of the operation unit or issues an alarm by the speaker.

Conventionally, in the replacement work of the main tanks such as sodium hypochlorite stock solution and acid stock solution, it is necessary to replace the main tank with a new tank and then communicate the new main tank with the sub tank through the communication pipe 41. Therefore, one end 41a of the communication pipe 41 is removed from the old main tank, one end 41a of the removed communication pipe is inserted into a new main tank, and then the inside of the communication pipe 41 is filled with undiluted solution in order to utilize the siphon principle. It is necessary to fill the tank and allow the undiluted solution in the main tank to communicate with the sub tank. The work of communicating the new main tank and sub tank with the undiluted solution was complicated and time-consuming. Further, the conventional sodium hypochlorite activator 1 has the following problems.

In particular, in the sodium hypochlorite undiluted solution supply piping structure 50A of the sodium hypochlorite activator 1 having the above configuration, although the sodium hypochlorite undiluted solution is sufficiently present in the main tank 5a, the sodium hypochlorite undiluted solution is sufficiently present. , An abnormality occurred in the stock solution supply pipe structure 50A, and a predetermined amount of the stock solution was not supplied. As a result, the sodium hypochlorite concentration and pH of the active water may not conform to the set values.

In particular, at night when the monitoring by the observer is not performed, the dialysate supply system 100 automatically operates the RO water and the sodium hypochlorite activating device 1 from the RO device 60 and the sodium hypochlorite activating device 1, respectively. The pipes and equipment installed in the dialysis monitoring device 140 are cleaned, disinfected, and sterilized. Therefore, if the concentration and pH value of the active water generated by the sodium hypochlorite activating device 1 deviates from the set values, it is considered impossible or insufficient to clean, disinfect, sterilize, etc. in the dialysis monitoring device 140. Will be done. Further, when the operation of the sodium hypochlorite activator 1 is stopped, the disinfection work at night when there is no observer remains interrupted, which is a waste of time.

According to the research and experiment of the present inventor, it was found that the above-mentioned abnormality of the undiluted solution supply piping structure 50A is caused by the following.

That is, a diaphragm type pump is usually used as the liquid feed pump 6 installed in the undiluted liquid supply pipe structure 50A, and sodium hypochlorite decomposes the undiluted liquid feed pipe line 51 in flow. Therefore, the liquid feed pump 6 may be air-locked. When an airlock occurs, the pump stops functioning, and the supply of the stock solution to the dilution mixing flow path L2 by the liquid feed pump 6 is stopped or becomes extremely small.

Furthermore, calcium carbonate, salt, rust, etc. tend to accumulate as sludge in the stock solution supply pipe line 51 from the sodium hypochlorite stock solution tank 5 to the dilution mixing flow path L2, and the sludge causes the stock solution. The supply of the undiluted solution from the tank to the dilution mixing flow path will be reduced, or in the worst case, it will be stopped. In this case, naturally, the sodium hypochlorite concentration and pH of the active water do not match the set values.

Therefore, an object of the present invention is to provide a sodium hypochlorite activator that solves the above problems.

That is, the object of the present invention is
(1) Easily replace the main tank that stores the sodium hypochlorite stock solution and the acid stock solution.
(2) Avoid unexpected shutdown of the sodium hypochlorite activator due to the airlock generated in the liquid feed pump or the accumulation of sludge in the undiluted liquid feed pipeline.
It is to provide a sodium hypochlorite activator capable of capable.

The above object is achieved by the sodium hypochlorite activator according to the present invention. In summary , according to the first aspect , the present invention
Sodium hypochlorite stock solution and acid stock solution tanks for storing sodium hypochlorite stock solution and acid stock solution, respectively,
The undiluted solution in the sodium hypochlorite undiluted solution tank and the undiluted solution in the acid undiluted solution tank are mixed with the diluting undiluted water to produce the sodium hypochlorite diluted solution and the acid diluted solution, respectively. Sodium hypochlorite stock solution supply piping structure and acid stock solution supply piping structure to be fed to the dilution mixing means,
A control means for controlling the supply of the sodium hypochlorite stock solution, the acid stock solution, and the dilution raw water.
In a sodium hypochlorite activator for producing sodium hypochlorite activated water by mixing the sodium hypochlorite diluted solution and the acid diluted solution.
The sodium hypochlorite stock solution tank and the acid stock solution tank are each
The main tank, which is an open container that can be replaced,
A sub-tank, which is a closed container that is fixedly installed at a position below the main tank in the direction of gravity and communicates with the main tank with a communication pipe, and
Have and
The sodium hypochlorite undiluted solution supply piping structure and the acid undiluted solution supply piping structure are respectively.
One end is connected to the sub tank, and the other end is connected to the dilution mixing means.
The liquid feed pump installed in the undiluted liquid feed pipeline and
One end is connected to the undiluted solution supply pipeline on the downstream side of the liquid feed pump, the other end is connected to the main tank of the undiluted solution tank, and the undiluted solution flowing through the undiluted solution supply pipeline is connected to the main tank. Undiluted solution reflux line that can be refluxed,
With the reflux liquid pump installed in the undiluted liquid reflux pipeline,
Have,
The control means
The undiluted solution is fed from each undiluted solution tank to the diluted mixing means via each undiluted solution supply piping structure to generate the sodium hypochlorite diluent and the acid diluted solution, and both diluted solutions are mixed. Normal operation mode for producing sodium hypochlorite active water,
Main tank replacement operation mode, which enables the replaced new main tank to be used.
An airlock release operation mode for releasing an airlock generated in the liquid supply pump installed in the stock solution supply pipe of the sodium hypochlorite stock solution supply piping structure, or an airlock release operation mode.
A sludge removal operation mode for preventing sludge accumulation in the stock solution supply pipe structure of the sodium hypochlorite stock solution supply piping structure.
Allows driving by
The sub-tank is provided with a tank remaining amount detecting means for detecting that the undiluted solution in the main tank of the undiluted solution tank has been consumed.
When the control means detects that the stock solution in the stock solution tank has been consumed, the control means stops the operation in the normal operation mode and replaces the main tank with respect to the replaced new main tank. When the operation in the operation mode is started and the tank remaining amount detecting means detects that the new main tank can be used, the operation in the main tank replacement operation mode is terminated and the operation in the normal operation mode is terminated. To resume
A sodium hypochlorite activator characterized by this is provided.

According to the second aspect of the present invention, a sodium hypochlorite stock solution tank and an acid stock solution tank for storing the sodium hypochlorite stock solution and the acid stock solution, respectively,
The undiluted solution in the sodium hypochlorite undiluted solution tank and the undiluted solution in the acid undiluted solution tank are mixed with the diluting undiluted water to produce the sodium hypochlorite diluted solution and the acid diluted solution, respectively. Sodium hypochlorite stock solution supply piping structure and acid stock solution supply piping structure to be fed to the dilution mixing means,
A control means for controlling the supply of the sodium hypochlorite stock solution, the acid stock solution, and the dilution raw water.
In a sodium hypochlorite activator for producing sodium hypochlorite activated water by mixing the sodium hypochlorite diluted solution and the acid diluted solution.
The sodium hypochlorite stock solution tank and the acid stock solution tank are each
The main tank, which is an open container that can be replaced,
A sub-tank, which is a closed container that is fixedly installed at a position below the main tank in the direction of gravity and communicates with the main tank with a communication pipe, and
Have and
The sodium hypochlorite undiluted solution supply piping structure and the acid undiluted solution supply piping structure are respectively.
One end is connected to the sub tank, and the other end is connected to the dilution mixing means.
The liquid feed pump installed in the undiluted liquid feed pipeline and
One end is connected to the stock solution supply pipeline on the downstream side of the liquid feed pump, the other end is connected to the main tank of the stock solution tank, and the stock solution flowing through the stock solution supply pipeline is connected to the main tank. Undiluted solution reflux line that can be refluxed,
With the reflux liquid pump installed in the undiluted liquid reflux pipeline,
Have,
The control means
The undiluted solution is fed from each undiluted solution tank to the diluted mixing means via each undiluted solution supply piping structure to generate the sodium hypochlorite diluent and the acid diluted solution, and both diluted solutions are mixed. Normal operation mode for producing sodium hypochlorite active water,
Main tank replacement operation mode, which enables the replaced new main tank to be used.
An airlock release operation mode for releasing an airlock generated in the liquid supply pump installed in the stock solution supply pipe of the sodium hypochlorite stock solution supply piping structure, or an airlock release operation mode.
A sludge removal operation mode for preventing sludge accumulation in the stock solution supply pipe structure of the sodium hypochlorite stock solution supply piping structure.
Allows driving by
A concentration sensor is provided in the dilution mixing means for producing a sodium hypochlorite diluent by mixing the sodium hypochlorite stock solution with the dilution raw water.
When the control means detects that the concentration of the sodium hypochlorite diluent deviates from the set value by the concentration sensor, the operation in the normal operation mode is stopped, and the operation in the air lock release operation mode is performed. When the concentration sensor detects that the concentration of the sodium hypochlorite diluent has reached the set value, the operation in the air lock release operation mode is terminated and the operation in the normal operation mode is performed . ,
A sodium hypochlorite activator characterized by this is provided.

According to the third aspect of the present invention, a sodium hypochlorite stock solution tank and an acid stock solution tank for storing the sodium hypochlorite stock solution and the acid stock solution, respectively,
The undiluted solution in the sodium hypochlorite undiluted solution tank and the undiluted solution in the acid undiluted solution tank are mixed with the diluting undiluted water to produce the sodium hypochlorite diluted solution and the acid diluted solution, respectively. Sodium hypochlorite stock solution supply piping structure and acid stock solution supply piping structure to be fed to the dilution mixing means,
A control means for controlling the supply of the sodium hypochlorite stock solution, the acid stock solution, and the dilution raw water.
In a sodium hypochlorite activator for producing sodium hypochlorite activated water by mixing the sodium hypochlorite diluted solution and the acid diluted solution.
The sodium hypochlorite stock solution tank and the acid stock solution tank are each
The main tank, which is an open container that can be replaced,
A sub-tank, which is a closed container that is fixedly installed at a position below the main tank in the direction of gravity and communicates with the main tank with a communication pipe, and
Have and
The sodium hypochlorite undiluted solution supply piping structure and the acid undiluted solution supply piping structure are respectively.
One end is connected to the sub tank, and the other end is connected to the dilution mixing means.
The liquid feed pump installed in the undiluted liquid feed pipeline and
One end is connected to the stock solution supply pipeline on the downstream side of the liquid feed pump, the other end is connected to the main tank of the stock solution tank, and the stock solution flowing through the stock solution supply pipeline is connected to the main tank. Undiluted solution reflux line that can be refluxed,
With the reflux liquid pump installed in the undiluted liquid reflux pipeline,
Have,
The control means
The undiluted solution is fed from each undiluted solution tank to the diluted mixing means via each undiluted solution supply piping structure to generate the sodium hypochlorite diluent and the acid diluted solution, and both diluted solutions are mixed. Normal operation mode for producing sodium hypochlorite active water,
Main tank replacement operation mode, which enables the replaced new main tank to be used.
An airlock release operation mode for releasing an airlock generated in the liquid supply pump installed in the stock solution supply pipe of the sodium hypochlorite stock solution supply piping structure, or an airlock release operation mode.
A sludge removal operation mode for preventing sludge accumulation in the stock solution supply pipe structure of the sodium hypochlorite stock solution supply piping structure.
Allows driving by
After starting the operation in the normal operation mode, the control means stops the operation in the normal operation mode at predetermined time intervals, and the sludge in the stock solution supply pipeline of the sodium hypochlorite stock solution supply piping structure is stopped. The operation in the sludge removal operation mode for preventing storage is performed for a predetermined time, and then the operation in the sludge removal operation mode is ended and the operation in the normal operation mode is restarted.
A sodium hypochlorite activator characterized by this is provided.

According to one embodiment of the present invention, one end of the sub-tank is attached to the sub-tank by opening the sub-tank, and the other end extends upward to open the discharge container via a foam eliminating chamber and an air bleeding valve. Equipped with an air vent pipe.

According to another embodiment of the present invention, the stock solution supply pipe has a flow path branch portion for diluting the stock solution into the stock solution return pipe on the downstream side of the liquid feed pump, and the flow path is described. A check valve is provided between the branch portion and the dilution / mixing means to prevent liquid from flowing from the dilution / mixing means into the stock solution supply pipe.
The undiluted liquid recirculation pipeline is provided with a solenoid valve between the recirculation liquid feed pump and the flow path branching portion.

According to another embodiment of the present invention, the reflux liquid feed pump has a larger discharge amount and suction amount than the liquid feed pump.
According to the fourth aspect of the present invention, a sodium hypochlorite stock solution tank and an acid stock solution tank for storing the sodium hypochlorite stock solution and the acid stock solution, respectively,
The undiluted solution in the sodium hypochlorite undiluted solution tank and the undiluted solution in the acid undiluted solution tank are mixed with the diluting undiluted water to produce the sodium hypochlorite diluted solution and the acid diluted solution, respectively. Sodium hypochlorite stock solution supply piping structure and acid stock solution supply piping structure to be fed to the dilution mixing means,
A control means for controlling the supply of the sodium hypochlorite stock solution, the acid stock solution, and the dilution raw water.
In a sodium hypochlorite activator for producing sodium hypochlorite activated water by mixing the sodium hypochlorite diluted solution and the acid diluted solution.
The sodium hypochlorite stock solution tank and the acid stock solution tank are each
The main tank, which is an open container that can be replaced,
A sub-tank, which is a closed container that is fixedly installed at a position below the main tank in the direction of gravity and communicates with the main tank with a communication pipe, and
Have and
The sodium hypochlorite undiluted solution supply piping structure and the acid undiluted solution supply piping structure are respectively.
One end is connected to the sub tank, and the other end is connected to the dilution mixing means.
The liquid feed pump installed in the undiluted liquid feed pipeline and
One end is connected to the stock solution supply pipeline on the downstream side of the liquid feed pump, the other end is connected to the main tank of the stock solution tank, and the stock solution flowing through the stock solution supply pipeline is connected to the main tank. Undiluted solution reflux line that can be refluxed,
With the reflux liquid pump installed in the undiluted liquid reflux pipeline,
Have,
The control means
The undiluted solution is fed from each undiluted solution tank to the diluted mixing means via each undiluted solution supply piping structure to generate the sodium hypochlorite diluent and the acid diluted solution, and both diluted solutions are mixed. Normal operation mode for producing sodium hypochlorite active water,
Main tank replacement operation mode, which enables the replaced new main tank to be used.
An airlock release operation mode for releasing an airlock generated in the liquid supply pump installed in the stock solution supply pipe of the sodium hypochlorite stock solution supply piping structure, or an airlock release operation mode.
A sludge removal operation mode for preventing sludge accumulation in the stock solution supply pipe structure of the sodium hypochlorite stock solution supply piping structure.
Allows driving by
The reflux liquid feed pump has a larger discharge amount and suction amount than the liquid feed pump.
A sodium hypochlorite activator characterized by this is provided.

According to the sodium hypochlorite activator of the present invention
(1) Facilitates replacement of the main tank that stores the sodium hypochlorite stock solution and the acid stock solution.
(2) Avoid unexpected shutdown of the sodium hypochlorite activator due to the airlock generated in the liquid feed pump or the accumulation of sludge in the undiluted liquid feed pipeline.
be able to.

1 (a) and 1 (b) are schematic configuration diagrams showing an embodiment of a sodium hypochlorite undiluted solution supply piping structure and an acid undiluted solution supply piping structure in the sodium hypochlorite activator according to the present invention, respectively. Is. 2 (a) and 2 (b) show the state when the undiluted solution in the undiluted solution tank of the sodium hypochlorite activator according to the present invention is consumed and the state when the main tank is replaced, respectively. It is a schematic block diagram which shows one Example of the sodium hypochlorite undiluted solution supply piping structure. It is a flow chart of one Example explaining the operation mode of the main tank exchange operation mode of the sodium hypochlorite activator which concerns on this invention. It is a flow chart of one Example explaining the operation mode of the airlock release operation mode of the sodium hypochlorite activator which concerns on this invention. It is a flow chart of one Example explaining the operation mode of the sludge removal operation mode of the sodium hypochlorite activator which concerns on this invention. It is a schematic block diagram which shows an Example of the dialysate supply system which uses the sodium hypochlorite activator which concerns on this invention. It is a schematic block diagram which shows an example of the conventional sodium hypochlorite activator. It is a schematic block diagram which shows an example of the sodium hypochlorite stock solution supply piping structure of the conventional sodium hypochlorite activator.

Hereinafter, the sodium hypochlorite activator according to the present invention will be described in more detail with reference to the drawings.

Example 1
The sodium hypochlorite activating device according to the present invention is the same as the conventional sodium hypochlorite activating device 1 described above with reference to FIGS. 7 and 8 in terms of overall configuration and function. The features of the present invention are the configuration, function, and structure of the stock solution supply piping structure 50 (50A, 50B) from the chemical solution (sodium hypochlorite stock solution and acid stock solution) tanks 5 and 9 to the dilution mixing channels L2 and L3. It is an operation mode of the sodium hypochlorite activator 1. Therefore, the description of the overall configuration and function of the sodium hypochlorite activating device 1 is based on the above description given with reference to FIGS. 7 and 8, and hereinafter, FIGS. 1 (a) and 1 (b) to With reference to FIG. 5, the stock solution supply piping structure 50 (stock solution supply piping structure 50) from the chemical solution (sodium hypochlorite stock solution and acid stock solution) tanks 5 and 9, which are the features of the present invention, to the dilution mixing channels L2 and L3 as the dilution mixing means. The configuration and function of 50A and 50B) and the operating mode of the sodium hypochlorite activating device 1 will be described in detail.

In the sodium hypochlorite activator 1 of this embodiment, the sodium hypochlorite stock solution and the acid stock solution stock solution tanks 5 and 9 are open containers of large-capacity main tanks 5a and 9a and the main tanks 5a. , 9a, which are sub-tanks 5b and 9b, which are closed containers fixedly installed at a lower position in the direction of gravity. Further, in the sodium hypochlorite activator 1, the sodium hypochlorite stock solution supply piping structure 50A and the acid from the stock solution tanks 5 and 9 of the sodium hypochlorite stock solution and the acid stock solution to the dilution mixing channels L2 and L3. Since the undiluted solution supply piping structure 50B has the same configuration, first, referring to FIG. 1A, the sodium hypochlorite undiluted solution supply piping structure from the sodium hypochlorite undiluted solution tank 5 to the dilution mixing flow path L2. 50A will be described.

(Sodium hypochlorite stock solution supply piping structure 50A)
In the sodium hypochlorite activating device 1 of the present embodiment, as in the conventional device, the main tank 5a and the sub tank 5b constituting the sodium hypochlorite stock solution tank 5 for the sodium hypochlorite stock solution are It is connected by a communication pipe (siphon pipe) 41. One end 41a of the communication pipe 41 is inserted into the tank through the upper opening 5a1 of the main tank 5a and is detachably attached to the main tank 5a by the attachment 5a2. Further, the other end 41b of the communication pipe 41 is inserted into the sub tank 5b and is airtightly and liquidtightly attached to the upper part of the sub tank 5b by the first attachment portion 5b1.

Further, in the sub tank 5b, one end 42a of the air bleeding pipe 42 is opened in the sub tank 5b by the second mounting portion 5b2 to be airtightly and liquid-tightly mounted, and the other end 42b extends upward. It opens to the discharge container 45 via the foam eliminating chamber 43 and the air bleeding valve 44.

In such a configuration, the main tank 5a and the sub tank 5b are communicated with the undiluted solution by the communication pipe 41 according to the siphon principle, the undiluted solution in the main tank 5a is supplied to the sub tank 5b, and the inside of the sub tank 5b is the undiluted solution. It is filled and the liquid level of the sub tank 5b rises through the air bleeding pipe 42 to maintain the same liquid level H as the liquid level of the main tank 5a. Such a configuration is the same as the conventional one, and the stock solution in the sub tank 5b is injected into the dilution mixing flow path L2 in a predetermined amount by the liquid feed pump 6 installed in the stock solution supply pipe line 51.

Here, according to the undiluted solution supply piping structure 50A of the sodium hypochlorite activator 1 of the present invention, the undiluted solution supply pipe line 51 is injected with the undiluted solution pump 6 and the undiluted solution into the dilution mixing flow path L2. A flow path branching portion 52 and a check valve 56 are arranged in series with the portion 4. Further, a stock solution return pipe line 53 is provided between the flow path branching portion 52 and the main tank 5a. The inflow port 53a of the undiluted solution recirculation pipeline 53 is connected to the flow path branch portion 52, and the outflow port 53b of the undiluted solution recirculation pipeline 53 is inserted into the tank through the upper opening 5a1 of the main tank 5a and into the fixture 5a2. Is attached to the main tank 5a. A solenoid valve 54 and a reflux liquid feed pump 55 are installed in series from the inflow port 53a to the outflow port 53b in the undiluted liquid return pipe line 53. As the reflux liquid pump 55, in this embodiment, a peristaltic pump (peristaltic pump) is used because it is resistant to airlock, but the present invention is not limited to this. However, in this embodiment, it is important that the recirculation liquid feed pump 55 has a higher pump performance (discharge amount, suction amount) than the recirculation pump 6, for example, the discharge amount of the recirculation liquid feed pump 55. The suction amount is preferably about 2 to 50 times that of the liquid feed pump 6. In this embodiment, the trade name "Tube Pump WP1000" manufactured by Welco Co., Ltd. was used as the reflux liquid feed pump 55. The discharge amount and suction amount of this pump 55 were 700 mL / min, respectively. Further, as the liquid feed pump 6, a trade name “Iwaki Electromagnetic Metering Pump EHN-B11VC1R” manufactured by Iwaki Co., Ltd. was used. The discharge amount and the suction amount of the pump 6 were 27 cc / min, respectively.

(Acid stock solution supply piping structure 50B)
Next, the acid stock solution supply piping structure 50B from the acid stock solution tank 9 to the dilution mixing flow path L3 will be described with reference to FIG. 1 (b). As described above, in the present embodiment, the stock solution supply pipe structure 50B from the acid stock solution tank 9 to the dilution mixing flow path L3 is the sodium hypochlorite stock solution tank described with reference to FIG. 1 (a) above. It has the same configuration as the stock solution supply pipe structure 50A from 5 to the dilution mixing flow path L2.

That is, in the sodium hypochlorite activator 1 of this embodiment, the main tank 9a and the sub tank 9b constituting the second stock solution tank 9 for the acid stock solution are connected by a communication pipe 41 (siphon pipe). There is. One end 41a of the communication pipe 41 is inserted into the tank through the upper opening 9a1 of the main tank 9a and is detachably attached to the main tank 9a by the attachment 9a2. Further, the other end 41b of the communication pipe 41 is inserted into the sub tank 9b and is airtightly and liquidtightly attached to the upper part of the sub tank 9b by the first attachment portion 9b1.

Further, one end 42a of the air bleeding pipe 42 is airtightly and liquidtightly attached to the sub tank 9b by the second attachment portion 9b2, and the other end 42b extends upward to the foam eliminating chamber 43 and It opens to the discharge container 45 via the air bleeding valve 44.

In such a configuration, the main tank 9a and the sub tank 9b are communicated with the undiluted solution by the communication pipe 41 according to the siphon principle, the undiluted solution in the main tank 9a is supplied to the sub tank 9b, and the inside of the sub tank 9b is filled with the undiluted solution. The liquid level of the sub tank 9b rises above the air bleeding pipe 42 to maintain the same liquid level H as the liquid level of the main tank 9a. The undiluted solution in the sub tank 9b is injected into the dilution mixing flow path L3 in a predetermined amount by the liquid supply pump 10 installed in the undiluted solution supply pipe line 51.

Here, the undiluted solution supply pipe structure 50B of the sodium hypochlorite activating device 1 of the present invention has the undiluted solution supply pipe structure 50A, and the undiluted solution supply pipe line 51 has the undiluted solution pump 10 and the undiluted solution diluted. A flow path branching portion 52 and a check valve 56 are arranged in series with the injection portion 8 into the mixing flow path L3. Further, a stock solution return pipe line 53 is provided between the flow path branching portion 52 and the main tank 9a. The inflow port 53a of the undiluted solution recirculation pipeline 53 is connected to the flow path branch portion 52, and the outflow port 53b of the undiluted solution recirculation pipeline 53 is inserted into the tank through the upper opening 9a1 of the main tank 9a and into the fixture 9a2. Is attached to the main tank 9a. A solenoid valve 54 and a reflux liquid feed pump 55 are installed in series from the inflow port 53a to the outflow port 53b in the undiluted liquid return pipe line 53.

The reflux liquid feed pump 55 and the liquid feed pump 10 in the stock solution supply pipe structure 50B can have the same configuration as the reflux liquid feed pump 55 and the liquid feed pump 6 in the stock solution supply pipe structure 50A.

(Operating mode of sodium hypochlorite activator 1)
Next, an embodiment of the operating mode of the sodium hypochlorite activating device 1 having the characteristic stock solution supply piping structure 50 (50A, 50B) will be described. 3 to 5 show an outline of the operating mode of the sodium hypochlorite activating device 1 in this embodiment in a flow chart, and the operating mode of the sodium hypochlorite activating device 1 is shown in these flow charts. It is not limited to the mode shown. The operation according to these flows is executed by the control of the control device 200 as the control means.

1. 1. Normal operation mode for generating activated water and main tank replacement operation mode when replacing the stock solution tank According to the normal operation mode for producing sodium hypochlorite activated water in the sodium hypochlorite activator 1 of this embodiment. The operation mode and the operation mode according to the main tank replacement operation mode when the stock solution tank is replaced will be described. Since the operating modes of the stock solution tanks 5 and 9 at the time of replacement of the main tanks 5a and 9a in the stock solution supply piping structure 50 (50A, 50B) are the same, the sodium hypochlorite stock solution supply piping structure 50A is described below. The operation mode when the main tank 5a of the stock solution tank 5 is replaced will be described with reference to FIGS. 1 (a), 2 (a), (b), and FIG.

In the sodium hypochlorite activator 1 of the present invention, the remaining amount in the main tank 5a of the sodium hypochlorite stock solution tank 5 is detected by the float switch 46 installed in the sub tank 5b. Therefore, as shown in FIG. 1 (a), when the switch 46 is on, that is, a sufficient stock solution is present in the main tank 5a, and therefore, the sub tank 5b is sufficiently filled with the sodium hypochlorite stock solution. When satisfied and the switch 46 is turned on, the sodium hypochlorite activator 1 is allowed to operate in a normal operating mode for producing sodium hypochlorite activated water. ..

That is, the sodium hypochlorite activating device 1 shown in FIG. 1A is operated in the normal operation mode for generating activated water as shown in FIG. 3 when the operation is started (power is turned on) (step). S1). In this normal operation mode, the undiluted liquid recirculation pipe 53 is not used, the solenoid valve 54 is closed, the recirculation pump 55 is stopped, and the air bleeding valve 44 of the air bleeding pipe 42 is closed. It has been established. Therefore, when the RO water electromagnetic valve 31 in the RO water supply flow path L1 which is the raw water for dilution is opened and the supply of RO water is started, the liquid feed pump 6 is driven in the stock solution feed pipe line 51. As a result, the liquid feed pump 6 sucks the undiluted solution from the sub tank 5b, and the undiluted solution in the sub tank 5b is sent to the injection section 4 of the sodium hypochlorite diluted mixing flow path L2 via the flow path branching portion 52 and the check valve 56. (Steps S1 and S2). As described above, the same operation is performed in the acid stock solution supply pipe structure 50B.

When the undiluted solution in the sub tank 5b is sucked by the liquid feed pump 6, the undiluted solution is automatically supplied from the main tank 5a to the sub tank 5b by the communication pipe 41 according to the amount, and the sub tank 5b is always filled with the undiluted solution. ing. If air (gas) flows from the main tank 5a to the sub tank 5b via the communication pipe 41, the air (gas) flows upward through the air bleeding pipe 42, and the foam extinguishing chamber 43 and the air bleeding. It is discharged to the discharge container 45 via the valve 44.

The above normal operation mode is continued by the sodium hypochlorite activator 1, and as shown in FIG. 2A, the remaining amount of the undiluted solution in the main tank 5a of the sodium hypochlorite undiluted solution tank 5 is approximately reduced. When it is set to zero, the supply of the undiluted solution from the main tank 5a to the sub tank 5b is stopped, so that the undiluted solution in the sub tank 5b is consumed. Here, the float switch 46 is turned off when the remaining amount of the undiluted solution in the sub tank 5b becomes equal to or less than a predetermined amount (NO in step S2).

As a result, the control device 200 displays a display indicating that the main tank 5a needs to be replaced with a new tank, or notifies the operator with an alarm, and further, the usual sodium hypochlorite activator 1 is normally used. The operation according to the operation mode is stopped (step S3). That is, the RO water solenoid valve 31 is closed, and the drive of the liquid feed pump 6 is stopped in the stock solution supply piping structure 50A. At this time, the drive of the liquid feed pump 10 is also stopped in the acid stock solution supply piping structure 50B.

Therefore, the operator replaces the main tank 5a with a new tank, removes one end 41a of the communication pipe 41 from the old main tank 5a together with the fixture 5a2, and replaces one end 41a of the removed communication pipe 41 with the new main tank 5a. And attach it to the new main tank 5a with the attachment 5a2 (step S4). FIG. 2B shows a state in which a new main tank 5a is installed in the main body of the apparatus, that is, a state after replacement with a new main tank. At this time, fluid communication between the new main tank 5a and the sub tank 5b has not been achieved, but in the present invention, the fluid communication between the new main tank 5a and the sub tank 5b by the communication pipe 41 is not performed by the operator. , It is automatically performed by operating the sodium hypochlorite activator 1 in the main tank replacement operation mode.

That is, according to the present invention, when the replacement work for installing the new main tank 5a by the operator in the apparatus is completed in step S4, the operation in the main tank replacement operation mode is started (step S5). The completion of the replacement work is notified to the control device 200 by, for example, an operator inputting from the operation unit. In FIG. 2B, in this main tank replacement operation mode, as described above, the solenoid valve 54, which is closed in the normal operation mode, is opened in the stock solution reflux pipe 53, and the drive is performed in the normal operation mode. The reflux liquid feed pump 55 that has been stopped is driven, and the air bleeding valve 44 that is open in the normal operation mode is closed. Further, the liquid feeding pump 6 of the undiluted liquid feeding pipe line 51 whose drive is stopped due to the operation stop in the normal operation mode is driven. The RO water solenoid valve 31 remains in the closed state when the normal operation mode is stopped.

As will be understood with reference to FIG. 2B, by driving the liquid feed pump 6, the liquid feed pump 6 sucks the undiluted solution remaining in the sub tank 5b, and the undiluted solution in the sub tank 5b is next. The liquid is sent in the direction of the sodium chlorite dilution mixing flow path L2.

On the other hand, the recirculation pump 55 is driven, and as described above, the amount of suction into the undiluted liquid recirculation line 53 at the position of the flow path branch 52 of the recirculation pump 55 is the flow path of the recirculation pump 6. It is set to be larger than the discharge amount at the branch portion 52 position, and therefore, substantially all of the undiluted liquid flowing through the undiluted solution supply pipe line 51 by the liquid feed pump 6 is sucked into the undiluted liquid recirculation pipe line 53 by the recirculation pump 55. .. At this time, the flow of liquids such as diluted solution and RO water from the sodium hypochlorite dilution mixing flow path L2 to the stock solution return pipe 53 is blocked by the check valve 56.

As a result, the undiluted solution in the sub tank 5b is sucked by the undiluted solution pump 6 and the recirculation pump 55 by the undiluted solution supply piping structure 50A formed by the undiluted solution supply pipe line 51 and the undiluted solution recirculation pipe line 53, and the main tank. It is refluxed to 5a. Further, since the sub tank 5b is sucked by the liquid feed pump 6 and the recirculation liquid feed pump 55, the pressure in the space inside the sub tank 5b is reduced, and the new main tank 5a is passed through the communication pipe 41 communicating with the sub tank 5b. The undiluted solution inside is evacuated to the sub tank 5b. Therefore, the undiluted solution in the main tank 5a flows to the sub tank 5b via the communication pipe 41, and the communication pipe 41 communicates the main tank 5a and the sub tank 5b with the undiluted solution. Further, since the air bleeding valve 44 is closed, air does not flow into the sub tank 5b through the air bleeding pipe 42.

When the sub tank 5b is filled with the undiluted solution in this way, the float switch 46 is turned on (YES in step S6), and the sodium hypochlorite activator 1 is in the state shown in FIG. 1 (a). .. The float switch 46 that has been turned on notifies the control device 200 that the replacement of the main tank 5a has been completed and the operation has started. The control device 200 displays that the replacement of the main tank has been completed, if necessary, ends the main tank replacement operation mode, and changes to the normal operation mode (FIG. 1A) (step S7). That is, when the operation of the normal operation mode is restarted, the RO water solenoid valve 31 is opened, the liquid feed pump 6 whose drive is stopped by the end of the main tank replacement operation mode resumes the drive, and further, the undiluted liquid recirculation pipeline 53 The solenoid valve 54 in the above is closed, the drive of the reflux liquid feed pump 55 is stopped, and the air bleeding valve 44 is opened. As a result, the operation of supplying the undiluted solution from the undiluted solution tank 5 (5a, 5b) to the undiluted solution supply pipe line 51 is automatically started, and the sodium hypochlorite activator 1 resumes operation in the normal operation mode. do. The liquid feed pump 10 is driven so that the undiluted solution supply piping structure 50B for the undiluted acid undiluted solution, which has been in an unused state due to the shutdown of the sodium hypochlorite activating device 1 in the normal operation mode, is also put into an operating state.

In this embodiment, even in the stock solution supply piping structure 50B for the acid stock solution, when the stock solution in the main tank 9a of the acid stock solution tank 9 is consumed, the stock solution supply piping structure for the sodium hypochlorite stock solution described above is consumed. The main tank 9a is replaced in the same manner as in 50A, and subsequently, the main tank replacement operation mode is carried out.

That is, even in the stock solution supply piping structure 50B for the acid stock solution in the sodium hypochlorite activator 1 of the present invention, when the acid stock solution in the main tank 9a is consumed, the float switch installed in the sub tank 9b. This is detected by 46, and the main tank 9a is replaced in the same manner as in the stock solution supply piping structure 50A for the sodium hypochlorite stock solution, and then the main tank replacement operation mode is performed. Such an operating mode is the same as the operating mode made in connection with the stock solution supply piping structure 50A for the sodium hypochlorite stock solution, and see the description of FIGS. 2 (a), 2 (b) and 3. I think that it can be fully understood.

2. Air lock release operation mode of the liquid feed pump As described above, in the stock solution supply piping structure 50A for supplying the sodium hypochlorite stock solution in the sodium hypochlorite activation device 1 of the present invention shown in FIG. 1 (a). As described above, a diaphragm type pump is usually used as the liquid feed pump 6, and air lock occurs as an abnormality of the liquid feed pump 6 due to the characteristics of the sodium hypochlorite stock solution. I have something to do. The operation mode of the liquid feed pump 6 in the airlock release operation mode will be described with reference to FIGS. 1A and 4A.

In FIG. 4, when the operation of the sodium hypochlorite activator 1 is started (power is turned on), the sodium hypochlorite activator 1 is operated in the normal operation mode for generating active water (step). S1). The operation mode during operation in the normal operation mode is as described above.

If an airlock occurs during operation in the normal operation mode, the undiluted solution feeding does not function even if the liquid feeding pump 6 is driven, and the supply of the undiluted solution to the dilution mixing flow path L2 by the liquid feeding pump 6 is stopped. Or, it decreases significantly. Therefore, the conductivity of the concentration sensor arranged in the dilution / mixing flow path L2, for example, the conductivity sensor 13, deviates significantly from the set value (step S2). When such a phenomenon occurs, the control device 200 determines that an air lock has occurred in the liquid feed pump 6 of the sodium hypochlorite stock solution (step S3), and the sodium hypochlorite activating device 1 The operation in the normal operation mode is stopped (step S4), and the liquid feed pump 6 is operated in the air lock release operation mode according to the following procedure using the undiluted liquid recirculation pipeline 53.

In the airlock release operation mode, the RO water solenoid valve 31 is in the closed state, and the drive of the liquid feed pump 6 whose drive is stopped due to the operation stop in the normal operation mode is restarted. Further, the solenoid valve 54 that is closed in the normal operation mode is opened in the undiluted liquid recirculation pipe 53, and the recirculation pump 55 that is stopped in the normal operation mode is driven, and the air bleeding valve is also opened. 44 is opened as in the normal operation mode. In the air lock release operation mode, the liquid feed pump 6 and the reflux liquid feed pump 55 are operated for a predetermined time (T1), for example, 10 to 60 seconds, and are retained in the liquid feed pump 6 by the reflux liquid feed pump 55. Air (gas) is forcibly sucked (step S5). At this time, the flow of liquids such as diluted solution and RO water from the sodium hypochlorite dilution mixing flow path L2 to the stock solution return pipe 53 is blocked by the check valve 56.

After the operation in the airlock release operation mode is performed for a predetermined time (T1), the airlock release operation mode is changed to the normal operation mode and the operation is performed (step S5). In the normal operation mode operation, as described above, the RO water solenoid valve 31 is opened, the solenoid valve 54 is closed, the recirculation liquid feed pump 55 is stopped, and the liquid feed pump 6 is driven. In the operation in this normal operation mode, the concentration of the sodium hypochlorite diluent is detected, and if the concentration value does not return to the set value as a result, it is determined that the airlock has not been released (step S6). Then, the process returns to step S5 again, and the operation is performed in the air lock release operation mode. Until the airlock of the liquid feed pump 6 is released, the operation in the airlock release operation mode according to the above procedure (steps S5 and S6) is repeated. During the operation in such an airlock release operation mode, the drive of the liquid feed pump 10 of the acid stock solution supply piping structure 50B is stopped.

When it is confirmed by the conductivity sensor 13 that the sodium hypochlorite diluent has returned to the set value in the operation in the normal operation mode, it is determined that the airlock has been released (YES in step S6). The operation in the air lock release operation mode is ended, and the operation in the normal operation mode for the normal stock solution supply operation is performed (step S7). The liquid feed pump 10 is driven so that the undiluted solution supply piping structure 50B for the undiluted acid undiluted solution, which has been in an unused state due to the shutdown of the sodium hypochlorite activating device 1 in the normal operation mode, is also put into an operating state.

3. 3. Sludge removal operation mode of undiluted solution supply pipeline In the sodium hypochlorite activator 1 of the present invention, in particular, in the undiluted solution supply pipeline 51 from the sodium hypochlorite undiluted solution tank 5 to the dilution mixing flow path L2. Calcium carbonate, salt, rust, etc. tend to accumulate as sludge. If sludge is accumulated in the stock solution supply pipe line 51, the supply of the stock solution to the dilution mixing flow path L2 by the liquid feed pump 6 gradually decreases, and as a result, sodium hypochlorite is adjusted to a predetermined concentration. It becomes impossible to obtain active water. Therefore, in order to solve the problem of sludge accumulation in the pipeline, the stock solution supply pipeline 51 is periodically operated in the sludge removal operation mode during the operation in the normal operation mode.

The operation mode of the undiluted solution supply pipe line 51 in the sludge removal operation mode will be described with reference to FIGS. 1 (a) and 5.

When the operation of the sodium hypochlorite activating device 1 is started (power is turned on), the sodium hypochlorite activating device 1 is operated in the normal operation mode for generating activated water (step S1).

According to this embodiment, in order to prevent the accumulation of sludge in the undiluted solution supply pipeline 51, during operation in the normal operation mode, every predetermined time (T2), for example, every 24 days to 1 month. Then, sludge in the stock solution supply pipe line 51 from the sub tank 5b of the sodium hypochlorite stock solution tank 5 to the dilution mixing flow path L2 is removed (steps S2 and S3). The operation mode according to the sludge removal operation mode is the same as the operation mode when the air lock occurs in the liquid feed pump 6 described above.

That is, in the sodium hypochlorite undiluted solution supply piping structure 50A, the operation is performed in the sludge removal operation mode in the undiluted solution supply pipeline 51 from the sodium hypochlorite undiluted solution tank 5 (5a, 5b) to the dilution mixing flow path L2. In starting, the operation in the normal operation mode for normal active water generation is stopped, and the operation in the sludge removal operation mode is performed using the stock solution recirculation pipe 53.

In the sludge removal operation mode, the RO water solenoid valve 31 is in the closed state to drive the liquid feed pump 6 whose drive is stopped due to the operation stop in the normal operation mode, and further, in the stock solution return pipe 53, the drive is normally stopped. The solenoid valve 54, which is closed in the operation mode, is opened, the reflux liquid pump 55, which is stopped in the normal operation mode, is driven, and the air bleeding valve 44 is opened in the same manner as in the normal operation mode. do. In the sludge removal operation mode, the liquid feeding pump 6 and the recirculating liquid feeding pump 55 are operated for a predetermined time (T3), for example, 1 to 10 minutes, and the liquid feeding pump 6 and the recirculating liquid feeding pump 55 operate in the stock solution feeding pipe 51. The sludge accumulated in the pump is forcibly sucked (step S4). As a result, the sludge accumulated in the stock solution supply pipe 51 is removed together with the flow of the stock solution, refluxed into the main tank 5a, and stays in the main tank 5a. The flow of liquids such as diluted solution and RO water from the sodium hypochlorite diluted mixing flow path L2 to the stock solution return pipe 53 is blocked by the check valve 56.

After the operation in the sludge removal operation mode is performed for a predetermined time (T3), the operation in the sludge removal operation mode is terminated, and the operation mode is changed to the normal operation mode to perform the operation (steps S5 and S6). In the normal operation mode operation, as described above, the RO water solenoid valve 31 is opened, the solenoid valve 54 is closed, the recirculation liquid feed pump 55 is stopped, and the liquid feed pump 6 is driven. During the operation in such a sludge removal operation mode, the drive of the liquid feed pump 10 of the acid stock solution supply piping structure 50B is stopped.

According to the experimental results of the present inventor, the sludge removal operation in the sodium hypochlorite stock solution supply pipeline 51 is performed at predetermined time (T2) intervals to dilute the sodium hypochlorite stock solution tank 5. No sludge was accumulated in the stock solution supply pipe line 51 to the mixing flow path L2.

As an alternative method, as described above, sludge removal is performed in step S2 at predetermined time intervals (T2) during operation in the normal operation mode, or is changed, and the conductivity is carried out in step S2. When the conductivity is measured by the sensor 13 and a tendency for the measured value to gradually decrease is detected, the amount of supply from the sodium hypochlorite stock solution tank 5 to the dilution mixing flow path L2 is decreasing. That is, it is determined that sludge is accumulated in the piping line, and the undiluted solution recirculation line 53 is used to carry out steps S3 to S5 of the above procedure to remove the sludge in the undiluted solution supply line 51. It can also be activated.

According to the results of research and experiments by the present inventor, in the stock solution supply piping structure 50B for the acid stock solution, sludge stays in the stock solution supply pipe line 51 from the acid stock solution tank 9 to the dilution mixing flow path L3. It is unlikely that you will. Therefore, although it is less necessary to perform the sludge removal operation in the pipeline, it may be performed in the same manner as the undiluted solution supply piping structure 50A.

Primary sodium hypochlorite activator 5, 9 Undiluted solution tank 5a, 9a Main tank 5b, 9b Sub tank 6, 10 Liquid feed pump 13 Concentration sensor (conductivity sensor)
20 Active water storage tank 21 pH sensor 41 Communication pipe (siphon pipe)
42 Air bleeding pipe 43 Foam eliminating chamber 44 Air bleeding valve 46 Tank remaining amount detecting means (float switch)
50 (50A, 50B) Undiluted solution supply piping structure 51 Undiluted solution supply piping line 52 Flow path branch 53 Undiluted solution recirculation pipeline 54 Solenoid valve 55 Recirculation liquid supply pump 56 Check valve L2, L3 Dilution mixing means (dilution mixing flow path)
L4 Diluted Liquid Mixing Means (Diluted Liquid Mixing Channel)

Claims (7)

Sodium hypochlorite stock solution and acid stock solution tanks for storing sodium hypochlorite stock solution and acid stock solution, respectively,
The undiluted solution in the sodium hypochlorite undiluted solution tank and the undiluted solution in the acid undiluted solution tank are mixed with the diluting undiluted water to produce the sodium hypochlorite diluted solution and the acid diluted solution, respectively. Sodium hypochlorite stock solution supply piping structure and acid stock solution supply piping structure to be fed to the dilution mixing means,
A control means for controlling the supply of the sodium hypochlorite stock solution, the acid stock solution, and the dilution raw water.
In a sodium hypochlorite activator for producing sodium hypochlorite activated water by mixing the sodium hypochlorite diluted solution and the acid diluted solution.
The sodium hypochlorite stock solution tank and the acid stock solution tank are each
The main tank, which is an open container that can be replaced,
A sub-tank, which is a closed container that is fixedly installed at a position below the main tank in the direction of gravity and communicates with the main tank with a communication pipe, and
Have and
The sodium hypochlorite undiluted solution supply piping structure and the acid undiluted solution supply piping structure are respectively.
One end is connected to the sub tank, and the other end is connected to the dilution mixing means.
The liquid feed pump installed in the undiluted liquid feed pipeline and
One end is connected to the undiluted solution supply pipeline on the downstream side of the liquid feed pump, the other end is connected to the main tank of the undiluted solution tank, and the undiluted solution flowing through the undiluted solution supply pipeline is connected to the main tank. Undiluted solution reflux line that can be refluxed,
With the reflux liquid pump installed in the undiluted liquid reflux pipeline,
Have,
The control means
The undiluted solution is fed from each undiluted solution tank to the diluted mixing means via each undiluted solution supply piping structure to generate the sodium hypochlorite diluent and the acid diluted solution, and both diluted solutions are mixed. Normal operation mode for producing sodium hypochlorite active water,
Main tank replacement operation mode, which enables the replaced new main tank to be used.
An airlock release operation mode for releasing an airlock generated in the liquid supply pump installed in the stock solution supply pipe of the sodium hypochlorite stock solution supply piping structure, or an airlock release operation mode.
A sludge removal operation mode for preventing sludge accumulation in the stock solution supply pipe structure of the sodium hypochlorite stock solution supply piping structure.
It is possible to drive bydeath,
The sub-tank is provided with a tank remaining amount detecting means for detecting that the undiluted solution in the main tank of the undiluted solution tank has been consumed.
When the control means detects that the stock solution in the stock solution tank has been consumed, the control means stops the operation in the normal operation mode and replaces the main tank with respect to the replaced new main tank. When the operation in the operation mode is started and the tank remaining amount detecting means detects that the new main tank can be used, the operation in the main tank replacement operation mode is terminated and the operation in the normal operation mode is terminated. To resume
A sodium hypochlorite activator characterized by this. Sodium hypochlorite stock solution and acid stock solution tanks for storing sodium hypochlorite stock solution and acid stock solution, respectively,
The undiluted solution in the sodium hypochlorite undiluted solution tank and the undiluted solution in the acid undiluted solution tank are mixed with the diluting undiluted water to produce the sodium hypochlorite diluted solution and the acid diluted solution, respectively. Sodium hypochlorite stock solution supply piping structure and acid stock solution supply piping structure to be fed to the dilution mixing means,
A control means for controlling the supply of the sodium hypochlorite stock solution, the acid stock solution, and the dilution raw water.
In a sodium hypochlorite activator for producing sodium hypochlorite activated water by mixing the sodium hypochlorite diluted solution and the acid diluted solution.
The sodium hypochlorite stock solution tank and the acid stock solution tank are each
The main tank, which is an open container that can be replaced,
A sub-tank, which is a closed container that is fixedly installed at a position below the main tank in the direction of gravity and communicates with the main tank with a communication pipe, and
Have and
The sodium hypochlorite undiluted solution supply piping structure and the acid undiluted solution supply piping structure are respectively.
One end is connected to the sub tank, and the other end is connected to the dilution mixing means.
The liquid feed pump installed in the undiluted liquid feed pipeline and
One end is connected to the undiluted solution supply pipeline on the downstream side of the liquid feed pump, the other end is connected to the main tank of the undiluted solution tank, and the undiluted solution flowing through the undiluted solution supply pipeline is connected to the main tank. Undiluted solution reflux line that can be refluxed,
With the reflux liquid pump installed in the undiluted liquid reflux pipeline,
Have,
The control means
The undiluted solution is fed from each undiluted solution tank to the diluted mixing means via each undiluted solution supply piping structure to generate the sodium hypochlorite diluent and the acid diluted solution, and both diluted solutions are mixed. Normal operation mode for producing sodium hypochlorite active water,
Main tank replacement operation mode, which enables the replaced new main tank to be used.
An airlock release operation mode for releasing an airlock generated in the liquid supply pump installed in the stock solution supply pipe of the sodium hypochlorite stock solution supply piping structure, or an airlock release operation mode.
A sludge removal operation mode for preventing sludge accumulation in the stock solution supply pipe structure of the sodium hypochlorite stock solution supply piping structure.
Allows driving by
A concentration sensor is provided in the dilution mixing means for producing a sodium hypochlorite diluent by mixing the sodium hypochlorite stock solution with the dilution raw water.
When the control means detects that the concentration of the sodium hypochlorite diluent deviates from the set value by the concentration sensor, the operation in the normal operation mode is stopped, and the operation in the air lock release operation mode is performed. When the concentration sensor detects that the concentration of the sodium hypochlorite diluent has reached the set value, the operation in the air lock release operation mode is terminated and the operation in the normal operation mode is performed.cormorant,
Characterized bySodium hypochlorite activator. Sodium hypochlorite stock solution and acid stock solution tanks for storing sodium hypochlorite stock solution and acid stock solution, respectively,
The undiluted solution in the sodium hypochlorite undiluted solution tank and the undiluted solution in the acid undiluted solution tank are mixed with the diluting undiluted water to produce the sodium hypochlorite diluted solution and the acid diluted solution, respectively. Sodium hypochlorite stock solution supply piping structure and acid stock solution supply piping structure to be fed to the dilution mixing means,
A control means for controlling the supply of the sodium hypochlorite stock solution, the acid stock solution, and the dilution raw water.
In a sodium hypochlorite activator for producing sodium hypochlorite activated water by mixing the sodium hypochlorite diluted solution and the acid diluted solution.
The sodium hypochlorite stock solution tank and the acid stock solution tank are each
The main tank, which is an open container that can be replaced,
A sub-tank, which is a closed container that is fixedly installed at a position below the main tank in the direction of gravity and communicates with the main tank with a communication pipe, and
Have and
The sodium hypochlorite undiluted solution supply piping structure and the acid undiluted solution supply piping structure are respectively.
One end is connected to the sub tank, and the other end is connected to the dilution mixing means.
The liquid feed pump installed in the undiluted liquid feed pipeline and
One end is connected to the undiluted solution supply pipeline on the downstream side of the liquid feed pump, the other end is connected to the main tank of the undiluted solution tank, and the undiluted solution flowing through the undiluted solution supply pipeline is connected to the main tank. Undiluted solution reflux line that can be refluxed,
With the reflux liquid pump installed in the undiluted liquid reflux pipeline,
Have,
The control means
The undiluted solution is fed from each undiluted solution tank to the diluted mixing means via each undiluted solution supply piping structure to generate the sodium hypochlorite diluent and the acid diluted solution, and both diluted solutions are mixed. Normal operation mode for producing sodium hypochlorite active water,
Main tank replacement operation mode, which enables the replaced new main tank to be used.
An airlock release operation mode for releasing an airlock generated in the liquid supply pump installed in the stock solution supply pipe of the sodium hypochlorite stock solution supply piping structure, or an airlock release operation mode.
A sludge removal operation mode for preventing sludge accumulation in the stock solution supply pipe structure of the sodium hypochlorite stock solution supply piping structure.
Enables driving by,
After starting the operation in the normal operation mode, the control means stops the operation in the normal operation mode at predetermined time intervals, and the sludge in the stock solution supply pipeline of the sodium hypochlorite stock solution supply piping structure is stopped. The operation in the sludge removal operation mode for preventing storage is performed for a predetermined time, and then the operation in the sludge removal operation mode is ended and the operation in the normal operation mode is restarted.Ru,
Characterized bySodium hypochlorite activator. The sub-tank is provided with an air bleeding pipe having one end open to the sub-tank and the other end extending upward to open to the discharge container via a foam eliminating chamber and an air bleeding valve. The sodium hypochlorite activator according to any one of claims 1 to 3 , wherein the sodium hypochlorite activator is characterized. The stock solution supply pipe has a flow path branch portion for diversion of the stock solution to the stock solution return pipe on the downstream side of the liquid feed pump, and is between the flow path branch portion and the dilution mixing means. Is provided with a check valve for preventing the inflow of liquid from the diluted mixing means into the stock solution supply pipe.
The sodium hypochlorite according to any one of claims 1 to 4 , wherein the undiluted liquid recirculation pipeline is provided with a solenoid valve between the recirculation liquid feed pump and the flow path branch portion. Activator. The sodium hypochlorite activator according to any one of claims 1 to 5 , wherein the reflux liquid feed pump has a larger discharge amount and suction amount than the liquid feed pump. Sodium hypochlorite stock solution and acid stock solution tanks for storing sodium hypochlorite stock solution and acid stock solution, respectively,
The undiluted solution in the sodium hypochlorite undiluted solution tank and the undiluted solution in the acid undiluted solution tank are mixed with the diluting undiluted water to produce the sodium hypochlorite diluted solution and the acid diluted solution, respectively. Sodium hypochlorite stock solution supply piping structure and acid stock solution supply piping structure to be fed to the dilution mixing means,
A control means for controlling the supply of the sodium hypochlorite stock solution, the acid stock solution, and the dilution raw water.
In a sodium hypochlorite activator for producing sodium hypochlorite activated water by mixing the sodium hypochlorite diluted solution and the acid diluted solution.
The sodium hypochlorite stock solution tank and the acid stock solution tank are each
The main tank, which is an open container that can be replaced,
A sub-tank, which is a closed container that is fixedly installed at a position below the main tank in the direction of gravity and communicates with the main tank with a communication pipe, and
Have and
The sodium hypochlorite undiluted solution supply piping structure and the acid undiluted solution supply piping structure are respectively.
One end is connected to the sub tank, and the other end is connected to the dilution mixing means.
The liquid feed pump installed in the undiluted liquid feed pipeline and
One end is connected to the undiluted solution supply pipeline on the downstream side of the liquid feed pump, the other end is connected to the main tank of the undiluted solution tank, and the undiluted solution flowing through the undiluted solution supply pipeline is connected to the main tank. Undiluted solution reflux line that can be refluxed,
With the reflux liquid pump installed in the undiluted liquid reflux pipeline,
Have,
The control means
The undiluted solution is fed from each undiluted solution tank to the diluted mixing means via each undiluted solution supply piping structure to generate the sodium hypochlorite diluent and the acid diluted solution, and both diluted solutions are mixed. Normal operation mode for producing sodium hypochlorite active water,
Main tank replacement operation mode, which enables the replaced new main tank to be used.
An airlock release operation mode for releasing an airlock generated in the liquid feed pump installed in the stock solution supply pipe of the sodium hypochlorite stock solution supply piping structure, or an airlock release operation mode, or
A sludge removal operation mode for preventing sludge accumulation in the stock solution supply pipe structure of the sodium hypochlorite stock solution supply piping structure.
Allows driving by
The reflux liquid feed pump has a larger discharge amount and suction amount than the liquid feed pump.Ru,
Characterized bySodium hypochlorite activator.

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