JP2016168522A - Monochloramine preparation apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a monochloramine preparation apparatus capable of safely and suitably preparing monochloramine for use in the sterilization of a system for water to be treated such as hot spring water, bathtub water, or pool water, while avoiding the mixture of a chlorine agent with an ammonia agent under high concentration.SOLUTION: A monochloramine preparation apparatus 1 comprises: a water supply part 10 for supplying water; a chlorine agent supply part 30 for supplying a constant flow rate of a chlorine agent to the water supplied from the water supply part 10, according to the flow rate of the water; an ammonia agent supply part 40 for supplying a constant flow rate of an ammonia agent to the water supplied from the water supply part 10, according to the flow rate of the water; and a flow rate sensor 21 as a flowmeter for measuring the water flow rate of the water supply part 10. A normal flow rate range of the water of the water supply part 10 is set in the flow rate sensor 21. When a measured water flow rate is within the normal flow rate range, the flow rate sensor sends a drive signal S3 to the chlorine agent supply part 30 and to the ammonia agent supply part 40. The chlorine agent supply part 30 and the ammonia agent supply part 40 supply the chlorine agent and the ammonia agent respectively during the reception of the drive signal S3.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a monochloramine preparation device for the safe and appropriate preparation of monochloramine in disinfection of water to be treated such as hot spring water, bathtub water, and pool water.

  Conventionally, water to be treated such as hot spring water, bathtub water, and pool water is disinfected with free chlorine. However, hot spring water is difficult to manage with free chlorine concentration, depending on the quality of the spring and its components. In addition, the disinfection method using free chlorine has the problem that disinfection by-products generated by the reaction of free chlorine with organic substances in the system, such as trihalomethanes that are concerned about carcinogenicity, and the problem of odor caused by them. There is. Therefore, monochloramine is used as a disinfecting agent instead of free chlorine.

  Monochloramine is prepared by, for example, chlorinating agents such as sodium hypochlorite (hereinafter, hypochlorous acid, hypochlorite and their aqueous solutions are collectively referred to as chlorinating agents) and ammonia or ammonia which is a salt thereof. It is carried out by mixing an agent (hereinafter, ammonia, ammonium salt and an aqueous solution of these together as an ammonia agent) under diluting water. Conventionally, various methods and apparatuses for preparing monochloramine are known (see Patent Documents 1 to 4).

US Pat. No. 6,132,628 JP-A-10-28981 Japanese Patent No. 4730968 Japanese Patent Application Laid-Open No. 2011-183212

  Monochloramine must be prepared under appropriate methods and conditions such as mixing ratio (molar ratio) of chlorine agent and ammonia agent, pH value during preparation, and monochloramine concentration control during and after preparation. . If the method and conditions are not appropriate, the desired monochloramine may not be obtained, and dichloramine or trichloramine with a strong irritating odor may be generated. From this point of view, especially mixing of a chlorine agent and an ammonia agent at a high concentration should be avoided. Here, the high concentration means, for example, a concentration exceeding 10,000 mg / L as monochloramine.

  Mixing a chlorine agent and an ammonia agent in the absence of diluting water or at a high concentration leads to non-uniform mixing of both, an undesired increase in temperature, etc. Produces tearing gas such as water and trichloramine. Therefore, it is necessary to avoid mixing the chlorine agent and the ammonia agent in a state where there is no dilution water or at the high concentration, but the above-mentioned Patent Documents 1 to 4 do not mention such safety measures.

  In addition, since the methods and apparatuses described in Patent Documents 1 to 4 require a complicated control circuit, the apparatus becomes large, and the installation space and cost of the apparatus increase. In order to avoid this, it is conceivable that the chlorine agent and the ammonia agent are mixed and prepared by using a small container such as a bucket by hand. However, the preparation, management, use, etc. of medicines in hot springs, bathing facilities, pool facilities, etc. are often performed by facility managers who are not proficient in handling chemicals, unlike factory facilities. Therefore, manual preparation of the drug should be avoided from the viewpoint of preventing poor preparation due to abnormal mixing and preventing gas generation.

  The present invention avoids mixing of a chlorine agent and an ammonia agent under a high concentration, and can safely and appropriately prepare a monochloramine used for disinfection of water to be treated such as hot spring water, bath water, and pool water. It is an object to be solved to provide a monochloramine preparation device.

  In addition, in facilities such as inns and inns that have only a few tons of bathtubs, not only the amount of drug used is small, but also there are many cases where it is not possible to secure space for installing large-scale equipment, and high-cost equipment is introduced. There are many facilities that are difficult to do. Therefore, a safe and low-cost monochloramine preparation device is desired, and it is an object of the present invention to provide a monochloramine preparation device that meets this demand.

  Furthermore, the present invention also solves the problem of providing a monochloramine preparation device that enables even a facility administrator who is not familiar with the handling of drugs to prepare monochloramine safely and easily with a simple operation. It should be a challenge.

The present inventors have completed the following invention as means for solving the above-mentioned problems. That is, the present invention
A monochloramine preparation device for preparing monochloramine by reaction of a chlorine agent and an ammonia agent in water,
A water supply section for supplying water;
A chlorinating agent supply unit that supplies a constant amount of chlorinating agent according to the flow rate of the water to the water supplied from the water supply unit;
An ammonia agent supply unit that supplies the water supplied from the water supply unit with an ammonia agent at a constant flow rate according to the flow rate of the water;
A flow meter for measuring the flow rate of the water in the water supply unit,
In the flow meter, when the normal flow range of the water of the water supply unit is set and the measured value of the flow rate of the water is within the normal flow range, the chlorine agent supply unit and the ammonia agent supply Send a drive signal to the
The chlorine agent supply unit and the ammonia agent supply unit relate to a monochloramine preparation device that supplies a chlorine agent and an ammonia agent, respectively, during reception of the drive signal.

  According to the present invention, when the water supply amount is outside the normal flow rate range, the flow meter does not transmit a drive signal, and the chlorinating agent supply unit and the ammonia agent supplying unit do not supply the chlorinating agent and the ammonia agent, respectively. In addition, mixing of the chlorine agent and the ammonia agent under a high concentration can be avoided. Therefore, the monochloramine preparation apparatus of this invention is suitable for the use of the disinfection of the to-be-processed water system which contacts human bodies, such as hot spring water, bathtub water, and pool water by which high safety | security is calculated | required.

  Furthermore, according to the present invention, a small, safe and low-cost device suitable for relatively small-scale facilities such as guest houses and inns can be provided. Even with simple operations, monochloramine can be prepared safely and easily.

FIG. 1 is a flow diagram showing an embodiment of the monochloramine preparation device of the present invention. FIG. 2 is a schematic diagram showing an embodiment of the control unit shown in FIG. FIG. 3 is a schematic view showing another embodiment of the control unit shown in FIG. FIG. 4 is a diagram illustrating another example of the water supply unit illustrated in FIG. 1.

(Monochloramine preparation device)
Hereinafter, the present invention will be specifically described. One embodiment of the flow diagram of the monochloramine preparation device of the present invention is shown in FIG.

  In the illustrated embodiment, the monochloramine preparation device 1 is a monochloramine preparation device that prepares monochloramine by a reaction between a chlorine agent and an ammonia agent in water. The monochloramine preparation device 1 includes a water supply unit 10 that supplies water as a drug dilution water, a reactor unit 20 that performs a monochloramine preparation reaction in water, and a chlorine agent and an ammonia agent that are supplied to the reactor unit 20, respectively. A chlorine agent supply unit 30 and an ammonia agent supply unit 40, and a control unit 50 for controlling them.

  The monochloramine preparation device 1 according to the embodiment of the present invention is characterized by having the following configuration. That is, the monochloramine preparation device 1 includes a flow sensor 21 as a flow meter for measuring the flow rate of water in the water supply unit 10, and the normal flow range of water in the water supply unit 10 is set in the flow sensor 21. Has been. The flow rate sensor 21 transmits the drive signal S3 to the chlorinating agent supply unit 30 and the ammonia agent supplying unit 40 when the measured value of the water flow rate is within the normal flow rate range, and the chlorinating agent supply unit 30 and the ammonia agent The supply unit 40 supplies a chlorine agent and an ammonia agent, respectively, during reception of the drive signal S3.

  Hereinafter, the detail of each structure of the monochloramine preparation apparatus 1 of this embodiment is demonstrated. Moreover, the other structure mentioned later can be suitably provided as needed.

(Water supply section)
The water supply unit 10 is a part that supplies water used for mixing under the condition that the monochloramine preparation liquid does not become a high concentration when the monochloramine is prepared in the reactor unit 20. The water supply unit 10 includes, for example, a water supply source 11 that is a supply port installed in a water conduit such as tap water, and an electromagnetic on-off valve 12 connected to the water supply source 11. The electromagnetic on-off valve 12 not only starts and stops water supply of the water supply unit 10 by opening and closing the valve, but also controls the flow rate of water supplied from the water supply unit 10 by controlling the opening of the valve. it can. The electromagnetic on-off valve 12 includes a receiving unit that receives a drive signal S2 of the control unit 50 described later, and is configured to open and close the valve in accordance with the drive signal S2.

  FIG. 4 is a diagram showing another embodiment of the water supply unit 10 shown in FIG. As shown in FIG. 4, the water supply source 11 may be connected to the water storage tank 13. In this case, by the start and stop of the operation of the water supply pump 14 connected to the water storage tank 13, the water supply start and the water supply stop of the water stored in the water storage tank 13 are performed. In addition, the flow rate of water supplied from the water supply unit 10 can be controlled by controlling the water flow rate of the water pump 14. The water pump 14 includes a receiving unit that receives a drive signal S2 from a water time switch 55 of the control unit 50, which will be described later, and is configured to control the water supply flow rate according to the drive signal S2.

  The water supplied by the water supply unit 10 is not limited to tap water, and for example, water to be treated such as hot spring water, bathtub water, and pool water may be circulated and supplied. However, in hot spring water and bathtub water, various components in hot spring water and bathtub water react with the added chlorine agent to produce reaction by-products, or the chlorine agent added by organic substances such as scales themselves. May disappear. In particular, the hot spring water contains various components, and reaction and deactivation of these with added chemicals are assumed. Therefore, in order to obtain a higher disinfection effect, it is preferable to add monochloramine prepared water prepared using clean water with few impurities such as tap water to the water to be treated.

(Reactor part)
The reactor unit 20 is connected to the water supply unit 10 at an upstream end of a flow path constituted by, for example, piping, and receives water supplied from the water supply unit 10. The downstream end of the flow path of the reactor unit 20 is connected to a tank in which treated water such as hot spring water, bathtub water, and pool water is stored, for example, via an on-off valve. A flow rate sensor 21, a check valve 22, a chlorine agent addition port 23, a line mixer 24, an ammonia agent addition port 25, and a line mixer 26 are provided in this order from the upstream side to the downstream side in the flow path of the reactor unit 20. It has been.

  The flow rate sensor 21 is a flow meter that measures the flow rate of water in the water supply unit 10 supplied to the reactor unit 20, and a normal flow rate range of water in the water supply unit 10 is set. The flow rate sensor 21 transmits a drive signal S3 to the chlorine agent supply unit 30 and the ammonia agent supply unit 40 when the measured value of the water flow rate of the water supply unit 10 is within the normal flow rate range.

  The flow rate sensor 21 measures the presence / absence of water supplied by the water supply unit 10 and whether a predetermined flow rate is flowing, and can detect that the predetermined flow rate is satisfied and send a signal. For example, a float type flow sensor can be used. When the water supply unit 10 starts water supply, the float type flow rate sensor 21 rises by the water flowing through the flow path of the reactor unit 20, and detects water supply.

  The lower limit and upper limit of the normal water flow range of the water supply unit 10 set in the flow sensor 21 depend on the supply amount and concentration of the chlorine agent and the ammonia agent supplied by the chlorine agent supply unit 30 and the ammonia agent supply unit 40, respectively. Can be determined. Specifically, the lower limit of the normal flow range is, for example, the minimum that can reliably prevent tearing gas from being generated due to heat generation, decomposition, etc. due to a reaction between a chlorine agent and an ammonia agent at a high concentration. The flow rate can be set.

  When the chlorine agent supply unit 30 and the ammonia agent supply unit 40 can change the supply amounts of the chlorine agent and the ammonia agent according to the water flow rate of the water supply unit 10, respectively, the lower limit of the normal flow rate range. May be set to the minimum flow rate that the flow rate sensor 21 can detect. Further, the upper limit of the normal flow rate range can be set to the maximum flow rate at which monochloramine prepared water having a predetermined concentration can be obtained. Note that the normal flow rate range has only a lower limit value and may not have an upper limit value.

  The flow rate sensor 21 measures the flow rate of water in the water supply unit 10 supplied to the reactor unit 20, and when the measured value of the flow rate reaches the lower limit of the normal flow rate range, the chlorinating agent supply unit 30 and the ammonia agent supply unit 40. The transmission of the drive signal S3 is started. Thereafter, the flow sensor 21 transmits the drive signal S3 to the chlorine agent supply unit 30 and the ammonia agent supply unit 40 until the measured value of the water flow rate of the water supply unit 10 falls below the lower limit or exceeds the upper limit of the normal flow range. Continue. The flow sensor 21 stops transmission of the drive signal S3 when the measured value of the water flow rate of the water supply unit 10 falls below or exceeds the lower limit of the normal flow rate range. When the upper limit value is not set in the normal flow rate range, the flow rate sensor 21 transmits the drive signal S3 to the chlorine agent supply unit 30 and the ammonia agent supply unit 40 when the flow rate to be measured exceeds a predetermined lower limit value. When the flow rate to be reduced falls below a predetermined lower limit value, transmission of the drive signal S3 is stopped.

  The check valve 22 is provided in the flow path of the reactor unit 20 on the downstream side of the flow sensor 21, and allows the flow of water from the upstream side to the downstream side of the flow path, and from the downstream side to the upstream side of the flow path. Block the flow of water. The chlorinating agent addition port 23 is, for example, a branch provided in the flow path of the reactor unit 20 on the downstream side of the check valve 22, and the chlorinating agent supplied from the chlorinating agent supply unit 30 flows into the reactor unit 20. Add to the water flowing through the road. The line mixer 24 is provided in the flow path of the reactor unit 20 on the downstream side of the chlorinating agent addition port 23 and the upstream side of the ammonia agent addition port 25, and agitates the water to which the chlorinating agent is added at the chlorinating agent addition port 23. .

  The ammonia agent addition port 25 is, for example, a branch provided in the flow path of the reactor unit 20 on the downstream side of the line mixer 24, and the ammonia agent supplied from the ammonia agent supply unit 40 is supplied to the flow path of the reactor unit 20. The chlorinating agent flowing in is added to the stirred water. The line mixer 26 is provided in the flow path of the reactor unit 20 on the downstream side of the ammonia agent addition port 25, and agitates the water added with the chlorine agent and the ammonia agent flowing through the flow path. The downstream end of the flow path of the reactor unit 20 may be branched and connected to a plurality of water tanks to be treated, or a discharge port provided with an on-off valve, which is discharged from the discharge port. The monochloramine preparation solution may be received in a container such as a bucket.

(Chlorine agent supply unit)
The chlorinating agent supply unit 30 is a part that supplies the sodium chlorite aqueous solution (referred to herein as “chlorinating agent”) with a constant flow rate according to the flow rate of water to the water supplied from the water supply unit 10. is there. Specifically, the chlorinating agent supply unit 30 includes a chlorinating agent storage tank 31 that is a stock tank that stores the chlorinating agent, a chlorinating agent pumping unit 32, and a check valve 33.

  The chlorine agent pumping unit 32 can be constituted by a metering pump, for example. The check valve 33 allows the flow of fluid from the chlorinating agent feeding unit 32 toward the chlorinating agent addition port 23 of the reactor unit 20 and blocks the flow of fluid in the opposite direction. When the chlorinating agent pumping unit 32 is driven, the chlorinating agent is supplied from the chlorinating agent storage tank 31 to the reactor unit 20 through the check valve 33 and flows through the flow path of the reactor unit 20 through the chlorinating agent addition port 23. To be added.

  The chlorine agent pumping unit 32 has a receiving unit that receives the driving signal S3 transmitted from the flow sensor 21, and is driven while receiving the driving signal S3, and stops when the driving signal S3 is not received. Further, the chlorine agent pumping unit 32 may, for example, pump the chlorine agent at a constant flow rate according to the measured value of the water flow rate included in the drive signal S3 received from the flow sensor 21. That is, the chlorine agent pumping unit 32 may change the amount of the chlorine agent supplied to the water flowing through the flow path of the reactor unit 20 according to the measured value of the water flow rate by the flow sensor 21.

  The reception unit of the chlorine agent pumping unit 32 may receive a drive signal S5 transmitted from the control unit 50 described later. In this case, the chlorine agent pumping unit 32 is driven while receiving both the drive signals S3 and S5, and stops when at least one of the drive signals S3 and S5 is not received.

  More specifically, the chlorinating agent pumping unit 32 stops driving and does not receive the driving signal S5 from the control unit 50 while receiving the driving signal S3 from the flow rate sensor 21, and stops the chlorinating agent. Stop pumping. Similarly, while receiving the drive signal S5 from the control unit 50, the chlorine agent pumping unit 32 stops driving and pumps the chlorine agent while receiving the drive signal S3 from the flow rate sensor 21. To stop. That is, the chlorine agent pumping unit 32 is configured to stop driving unless both the driving signals S3 and S5 are received.

(Ammonia agent supply part)
Ammonia agent supply unit 40 supplies a constant amount of ammonium sulfate or ammonium chloride aqueous solution (referred to herein as “ammonia agent”) to the water supplied from water supply unit 10 according to the flow rate of water. It is. The ammonia agent supply unit 40 includes an ammonia agent storage tank 41, which is a stock tank that stores the ammonia agent, an ammonia agent pumping unit 42, and a check valve 43.

  The ammonia agent pumping unit 42 can be constituted by a metering pump, for example. The check valve 43 allows the flow of fluid from the ammonia agent pumping unit 42 toward the ammonia agent addition port 25 of the reactor unit 20 and blocks the flow of fluid in the opposite direction. When the ammonia agent pumping unit 42 is driven, the ammonia agent is supplied from the ammonia agent storage tank 41 to the reactor unit 20 through the check valve 43 and flows through the flow path of the reactor unit 20 through the ammonia agent addition port 25. The agent is added and added to the stirred water.

  The ammonia agent pumping unit 42 includes a receiving unit that receives the drive signal S3 transmitted from the flow sensor 21, and is driven while receiving the drive signal S3, and stops when the drive signal S3 is not received. In addition, the ammonia agent pumping unit 42 may pump an ammonia agent at a constant flow rate according to the measured value of the flow rate of water included in the drive signal S3 received from the flow rate sensor 21, for example. That is, the ammonia agent pumping unit 42 may change the amount of the ammonia agent supplied to the water containing the chlorine agent flowing through the flow path of the reactor unit 20 according to the measured value of the water flow rate by the flow sensor 21. .

  The receiving unit of the ammonia agent pumping unit 42 may receive a drive signal S5 transmitted from the control unit 50 described later. In this case, the ammonia agent pumping unit 42 is driven while receiving both the drive signals S3 and S5, and stops when at least one of the drive signals S3 and S5 is not received.

  More specifically, the ammonia agent pumping unit 42 stops driving and does not receive the drive signal S5 from the control unit 50 while receiving the drive signal S3 from the flow sensor 21, and stops the ammonia agent. Stop pumping. Similarly, the ammonia agent pumping unit 42 stops driving and pumps the ammonia agent while receiving the drive signal S3 from the flow rate sensor 21 while receiving the drive signal S5 from the control unit 50. To stop. In other words, the ammonia agent pumping unit 42 is configured to stop driving unless both the driving signals S3 and S5 are received.

  The positions of the chlorine agent supply unit 30 and the ammonia agent supply unit 40 with respect to the reactor unit 20 may be interchanged. That is, in the monochloramine preparation device 1 according to the above-described embodiment, an example in which the chlorinating agent supply unit 30 is disposed upstream of the flow path of the reactor unit 20 and the ammonia agent supplying unit 40 is disposed downstream is described. did. However, the monochloramine preparation apparatus 1 is not limited to this configuration, and the ammonia agent supply unit 40 may be disposed on the upstream side of the flow path of the reactor unit 20, and the chlorine agent supply unit 30 may be disposed on the downstream side.

(Control part)
FIG. 2 is a schematic diagram of the control unit 50 shown in FIG. The control unit 50 includes a start switch 52 and an operation lamp 53 on the front surface 51 of the control box, and a water time switch 55 and a chemical solution time switch 56 in the control box interior 54.

  The activation switch 52 activates the water time switch 55 and the chemical liquid time switch 56. More specifically, the start switch 52 is, for example, a push button type switch. When the start switch 52 is pressed, the start signals S1, S4, and S6 are changed to a water time switch 55, a chemical time switch 56, and an operation lamp, respectively. 53. The operation lamp 53 is turned on by receiving the activation signal S6 transmitted from the activation switch 52, and displays that the monochromamin preparation device 1 is in an operation state.

  FIG. 3 is a schematic view showing another embodiment of the control unit 50 shown in FIG. The control unit 50 shown in FIG. 3 is different from the control unit 50 shown in FIG. 2 in that a start time switch 57 is provided as a start switch on the front face 51 of the control box. The other configuration of the control unit 50 shown in FIG. 3 is the same as that of the control unit 50 shown in FIG. The activation time switch 57 activates the water time switch 55 and the chemical time switch 56 at the set time.

  More specifically, the activation time switch 57 transmits activation signals S1, S4, and S6 to the water time switch 55, the chemical solution time switch 56, and the operation lamp 53, respectively, at a preset operation start time. . The operation lamp 53 is turned on by receiving the activation signal S6 transmitted from the activation time switch 57, and displays that the monochrome lamin preparation device 1 is in an operation state.

  The water time switch 55 limits the time during which the water supply unit 10 supplies water. Specifically, in the monochrome lamin preparation device 1 of the present embodiment, the water time switch 55 is activated by receiving the activation signal S1 transmitted from the activation switch 52 or the activation time switch 57, and the water supply unit 10 The transmission of the drive signal S2 to the electromagnetic on-off valve 12 or the water pump 14 included in is started.

  The water time switch 55 continues to transmit the drive signal S2 until a predetermined time elapses after receiving the activation signal S1, and stops transmitting the drive signal S2 when the predetermined time elapses. . While the water time switch 55 continues to transmit the drive signal S2, the electromagnetic on-off valve 12 opens the valve to continue water supply, and the water pump 14 continues to pump water. When the water time switch 55 stops transmission of the drive signal S2, the electromagnetic on-off valve 12 closes the valve to stop water supply, and the water supply pump 14 stops pumping water. Thereby, the time for which the water supply unit 10 supplies water is limited by the water time switch 55. The operation lamp 53 may be turned off when the water time switch 55 stops transmitting the drive signal S2.

  The chemical liquid time switch 56 limits the time during which the chlorine agent supply unit 30 and the ammonia agent supply unit 40 supply the chlorine agent and the ammonia agent, respectively. Specifically, in the monochloramine preparation device 1 of the present embodiment, the chemical time switch 56 is activated by receiving the activation signal S4 transmitted from the activation switch 52 or the activation time switch 57, and the chlorine agent supply unit 30 and transmission of the drive signal S5 to the chlorine agent pumping unit 32 and the ammonia agent pumping unit 42 included in the ammonia agent supply unit 40 are started.

  The chemical time switch 56 continues to transmit the drive signal S5 until a predetermined time elapses after receiving the activation signal S4, and stops transmitting the drive signal S5 when the predetermined time elapses. . Thereby, the chlorine agent pumping unit 32 and the ammonia agent pumping unit 42 are driven for a predetermined time from when the chemical liquid time switch 56 starts transmission of the drive signal S5 to when the transmission is stopped. As a result, the time during which the chlorine agent supply unit 30 and the ammonia agent supply unit 40 supply the chlorine agent and the ammonia agent, respectively, is limited by the chemical time switch 56. The operation lamp 53 may be turned off when the chemical liquid time switch 56 stops transmitting the drive signal S5.

Hereinafter, the operation of the monochloramine preparation device 1 of the present embodiment will be described.
In order to prepare the monochlorolamin by the monochlorolamin preparation device 1, first, the push button type start switch 52 of the control unit 50 is pressed. Further, when the start switch of the control unit 50 is the start time switch 57, the start time switch 57 sets the time for starting the operation of the monochrome lamin preparation device 1.

  When the start switch 52 is pressed or the operation start time set in the start time switch 57 is reached, the start signals S1, S4, and S6 are supplied to the water time switch 55, the chemical time switch 56, and the operation lamp 53, respectively. Sent. The operation lamp 53 is turned on by receiving the activation signal S6 transmitted from the activation switch 52, and displays that the monochromamin preparation device 1 is in an operation state.

  The water time switch 55 is activated by receiving the activation signal S1, and starts transmitting the drive signal S2 to the electromagnetic on-off valve 12 or the water supply pump 14 provided in the water supply unit 10. By receiving the drive signal S2, the electromagnetic on-off valve 12 opens and the water feed pump 14 starts to drive, whereby water feed from the water supply unit 10 to the reactor unit 20 is started.

  When water supply from the water supply unit 10 to the reactor unit 20 is started and water flows through the flow path of the reactor unit 20, the flow rate of the water in the water supply unit 10 supplied to the reactor unit 20 by the flow rate sensor 21 is changed. taking measurement. When the measured value of the water flow rate of the water supply unit 10 reaches the lower limit of the normal flow rate range set in advance, the flow rate sensor 21 starts transmitting the drive signal S3 to the chlorine agent supply unit 30 and the ammonia agent supply unit 40. .

  Even if the chlorine agent pumping unit 32 and the ammonia agent pumping unit 42 start to receive the drive signal S5 transmitted from the chemical liquid time switch 56 that has received the start signal S4 transmitted from the start switch 52 or the start time switch 57. Until the reception of the drive signal S3 transmitted from the flow sensor 21 is started, the stopped state is maintained. When the chlorine agent pumping unit 32 and the ammonia agent pumping unit 42 continue to receive the drive signal S5 transmitted from the chemical liquid time switch 56, the reception of the drive signal S3 transmitted from the flow sensor 21 is started. , Respectively, start feeding the chlorine agent and the ammonia agent. Thereby, the chlorine agent supply part 30 and the ammonia agent supply part 40 can supply a chlorine agent and an ammonia agent, respectively, to the flow path of the reactor part 20 in a state where water in a normal flow rate range flows.

  The chlorine agent supply unit 30 and the ammonia agent supply unit 40 supply the chlorine agent and the ammonia agent, respectively, to the flow path of the reactor unit 20 in a state where water in the normal flow rate range flows. Monochloramine can be prepared by reacting in water while avoiding mixing under high concentrations.

  That is, when the water supply amount of the water supply unit 10 is outside the normal flow range, the monochloramine preparation device 1 of the present embodiment does not transmit the drive signal S3, and the chlorine agent supply unit 30 and Since the ammonia agent supply unit 40 does not supply the chlorine agent and the ammonia agent, respectively, mixing of the chlorine agent and the ammonia agent under a high concentration can be avoided. Therefore, the monochloramine preparation apparatus 1 of this embodiment is suitable for the use of the disinfection of the to-be-processed water system which contacts human bodies, such as hot spring water, bath water, and pool water in which high safety | security is calculated | required.

  Further, in the monochrome lamin preparation device 1 of the present embodiment, the control unit 50 is configured by a simple device such as the start switch 52 or the start time switch 57, the operation lamp 53, the water time switch 55, and the chemical time switch 56. can do. That is, the monochrome lamin preparation apparatus 1 of the present embodiment can reduce the size of the apparatus and reduce the installation space and cost of the apparatus as compared with a conventional apparatus that requires a complicated control circuit or the like. It is also suitable for small facilities such as hotels and inns.

  Furthermore, the monochromamin preparation apparatus 1 can also omit the control unit 50. In this case, the start and stop of the operation of the monochloramine preparation device 1 can be performed by starting and stopping the supply of water by the water supply unit 10, and the chlorine agent pumping unit 32 and the ammonia agent pumping unit 42 are connected from the flow rate sensor 21. It can be driven during reception of the transmitted drive signal S3. In addition, the monochloramine preparation device 1 simply has a chlorinating agent feeding unit 32 and an ammonia agent feeding unit 42 in a constantly added state where water is constantly supplied from the water supply unit 10 and the drive signal S3 is transmitted from the flow rate sensor 21. The operation may be started and stopped by turning the power on and off. In this case, when the water supplied from the water supply unit 10 is out of the normal flow rate range, the drive signal S3 from the flow rate sensor 21 is stopped, the chlorine agent pumping unit 32 and the ammonia agent pumping unit 42 are stopped, and the monochloramine preparation is performed. The device 1 stops. This configuration is advantageous, for example, for washing away the residual drug in the tube constituting the flow path of the reactor unit 20. With the above-described configuration, the water time switch 55 and the chemical liquid time switch 56 of the control unit 50 are not necessary, and the monochloramine preparation device 1 can be further reduced in size, space-saving, and cost reduction.

  Further, in the flow path of the reactor unit 20, a line mixer 24 is provided on the upstream side of the ammonia agent addition port 25 to which the ammonia agent is supplied on the downstream side of the chlorine agent addition port 23 to which the chlorine agent is supplied. Thereby, after stirring and homogenizing the water in which the chlorine agent was added, an ammonia agent can be added and the appropriate reaction of a chlorine agent and an ammonia agent can be improved more. Further, a line mixer 26 is provided on the downstream side of the ammonia agent addition port 25. Thereby, reaction with a chlorine agent and an ammonia agent can be performed more appropriately.

  The water time switch 55 and the chemical liquid time switch 56 stop transmitting the drive signals S2 and S5 when a predetermined time elapses from the start of transmission of the drive signals S2 and S5, respectively. When the reception of the drive signal S2 is interrupted, the electromagnetic on-off valve 12 closes and the water supply pump 14 stops driving, whereby the water supply from the water supply unit 10 to the reactor unit 20 is stopped. Further, the reception of the drive signal S5 is interrupted, so that the chlorinating agent feeding unit 32 and the ammonia agent feeding unit 42 stop feeding the chlorinating agent and the ammonia agent.

  The operation lamp 53 of the control unit 50 is turned off when, for example, the water time switch 55 stops transmitting the drive signal S2, or when the chemical time switch 56 stops transmitting the drive signal S5, and the monochromamin preparation is performed. The fact that the operation of the device 1 has been completed is displayed.

  As described above, the monochloramine preparation device 1 of the present embodiment includes the water time switch 55 that limits the time during which the water supply unit 10 supplies water. Furthermore, the monochloramine preparation device 1 of the present embodiment includes a chemical liquid time switch 56 that limits the time during which the chlorine agent supply unit 30 and the ammonia agent supply unit 40 supply the chlorine agent and the ammonia agent, respectively. As a result, the operation of the monochloramine preparation device 1 can be stopped in a predetermined time set in advance, and even a facility administrator who is not familiar with the handling of medicines can safely and easily perform a simple operation. Monochloramine can be prepared.

  Furthermore, the monochloramine preparation device 1 of the present embodiment includes a push button type start switch 52 for starting the water time switch 55 and the chemical solution time switch 56 or a start time switch 57 for setting the operation start time. Therefore, the operation of the monochloramine preparation device 1 is started by pressing the start switch 52 or setting the operation start time in the start time switch 57 to avoid mixing the chlorine agent and the ammonia agent under high concentration. Monochloramine can be prepared safely and easily. Thereby, operation of the monochloramine preparation apparatus 1 becomes still easier.

  As described above, according to the monochloramine preparation device 1 of the present embodiment, the mixing of the chlorine agent and the ammonia agent under a high concentration is avoided, and the treated water system such as hot spring water, bathtub water, pool water, etc. Monochloramine used for disinfection can be prepared safely and appropriately. In addition, the monochloramine preparation apparatus 1 is a safe and low-cost monochromatic amine that can be used by a facility administrator who is not proficient in the handling of drugs to prepare monochloramine safely and easily with a simple operation. A lamin preparation device 1 can be provided.

  The embodiment of the present invention has been described in detail with reference to the drawings, but the specific configuration is not limited to this embodiment, and there are design changes and the like without departing from the gist of the present invention. They are also included in the present invention.

  Using the monochloramine preparation device 1 described in the above embodiment, the amount of water supplied by the water supply unit 10 is 1 L / min, the lower limit of the normal flow range of the flow sensor 21 is 300 ml / min, and the water time switch 55 Was set to 3 minutes, and the set time of the chemical liquid time switch 56 was set to 1 minute. Further, a sodium hypochlorite aqueous solution having an effective chlorine concentration of 12% is used as a chlorinating agent, a 20% ammonium sulfate aqueous solution is used as an ammonia agent, and the chlorinating agent and the ammonia agent are separated by the chlorinating agent supply unit 30 and the ammonia agent supplying unit 40. The supply amount was 25 g / min.

  Next, the start switch 52 of the control unit 50 was pressed, the operation lamp 53 was turned on, and the water time switch 55 and the chemical solution time switch 56 were started. Accordingly, the drive signal S2 is transmitted from the water time switch 55 to the water supply unit 10 over 3 minutes, and the drive signal S5 is transmitted from the chemical solution time switch 56 to the chlorine agent supply unit 30 and the ammonia agent supply unit 40 for 1 minute. Sent over. The water supply unit 10 starts to receive water to the reactor unit 20 by starting to receive the drive signal S2, and the measured value of the flow rate by the flow rate sensor 21 falls within the normal flow rate range. The drive signal S3 is transmitted to the supply unit 30 and the ammonia agent supply unit 40. Table 1 shows the operating conditions of the chlorine agent supply unit 30 and the ammonia agent supply unit 40.

  As shown in Table 1, the chlorine agent supply unit 30 and the ammonia agent supply unit 40 receive the drive signal S3 when the measured value of the flow sensor 21 is within the normal flow range (drive signal S3: ON), and The operation of receiving the drive signal S5 within the set time during which the chemical liquid time switch 56 is operating (drive signal S5: ON) and supplying the chlorine agent and the ammonia agent to the water flowing through the flow path of the reactor unit 20 It became a state. Thereby, it was possible to avoid the mixing of the chlorine agent and the ammonia agent at a high concentration, and to prepare monochloramine in the reactor unit 20.

  Thereafter, one minute after the start of the operation of the monochloramine preparation device 1, the set time of the chemical liquid time switch 56 has elapsed, and transmission of the drive signal S5 was stopped (drive signal S5: OFF). As a result, the drive signal S5 is not received by the chlorine agent supply unit 30 and the ammonia agent supply unit 40, and the supply of the chlorine agent and the ammonia agent to the water flowing through the flow path of the reactor unit 20 is stopped.

  Furthermore, three minutes after the start of the operation of the monochloramine preparation device 1, the set time of the water time switch 55 has elapsed, and transmission of the drive signal S2 was stopped. As a result, the drive signal S2 is not received by the water supply unit 10, and the supply of water from the water supply unit 10 to the reactor unit 20 is stopped. Further, the operation lamp 53 was turned off, and it was displayed that the operation of the monochlorolamin preparation device 1 was completed.

Through the above operation, 3 L of a monochloramine preparation solution having a concentration of 1000 mg / L could be obtained from the discharge port at the downstream end of the flow path of the reactor unit 20. When the amount of water to be treated stored in the bathtub is 3 m ³ , when ³ L of the monochloramine preparation liquid having a concentration of 1000 mg / L prepared in one operation is put into the bathtub, the monochloramine of the water to be treated The concentration of is 1 mg / L.

  When the amount of water supplied from the water supply unit 10 to the reactor unit 20 falls below 300 ml / min, which is the lower limit of the normal flow rate range set in the flow rate sensor 21, the flow rate sensor 21 to the chlorinating agent supply unit 30 It was confirmed that the drive signal S3 to the ammonia agent supply unit 40 was stopped. Thereby, supply of the chlorine agent and the ammonia agent from the chlorine agent supply unit 30 and the ammonia agent supply unit 40 to the reactor unit 20 was stopped.

  As described above, when the water supply unit 10 stops the water supply using the ON-OFF control function based on the external signal generally incorporated in advance in the metering pump constituting the chlorine agent pumping unit 32 and the ammonia agent pumping unit 42 or It was possible to avoid mixing the chlorine agent and the ammonia agent under high concentration conditions when the water supply amount was insufficient. That is, it was not necessary to build a complicated control system using a sequencer program, and an inexpensive and compact monochlorolamin preparation apparatus 1 having a safety function could be obtained.

  Further, when the chemical liquid time switch 56 having an on-delay operation and a self-holding circuit is used, transmission of the drive signal S3 from the flow rate sensor 21 and transmission of the drive signal S5 from the chemical liquid time switch 56 are started. We were able to create operating conditions that took into account the time lag. Thereby, the timing for driving the chlorine agent pumping unit 32 and the ammonia agent pumping unit 42 can be set, for example, 5 seconds after the start switch 52 is pressed. Became possible.

1 Monochloramine preparation device 10 Water supply unit 21 Flow sensor (flow meter)
30 Chlorine Agent Supply Unit 40 Ammonia Agent Supply Unit 52 Start Switch 55 Water Time Switch 56 Chemical Solution Time Switch 57 Start Time Switch S3 Drive Signal

Claims (7)

A monochloramine preparation device for preparing monochloramine by reaction of a chlorine agent and an ammonia agent in water,
A water supply section for supplying water;
A chlorinating agent supply unit that supplies a constant amount of chlorinating agent according to the flow rate of the water to the water supplied from the water supply unit;
An ammonia agent supply unit that supplies the water supplied from the water supply unit with an ammonia agent at a constant flow rate according to the flow rate of the water;
A flow meter for measuring the flow rate of the water in the water supply unit,
In the flow meter, when the normal flow range of the water of the water supply unit is set and the measured value of the flow rate of the water is within the normal flow range, the chlorine agent supply unit and the ammonia agent supply Send a drive signal to the
The said chlorine agent supply part and the said ammonia agent supply part are the monochloramine preparation apparatuses which supply a chlorine agent and an ammonia agent, respectively, during the reception of the said drive signal.   The monochloramine preparation device according to claim 1, further comprising a chemical time switch for limiting a time for supplying the chlorine agent and the ammonia agent to the chlorine agent supply unit and the ammonia agent supply unit, respectively.   The monochromamin preparation apparatus according to claim 2, further comprising a start switch that starts the time switch for the chemical solution.   The monochromamin preparation device according to claim 3, wherein the start switch is a start time switch that starts the time switch for chemical liquid at a set time.   The monochloramine preparation device according to claim 1, further comprising a water time switch that limits a time during which the water supply unit supplies the water.   The monochromamin preparation device according to claim 5, further comprising a start switch for starting the water time switch.   The monochromamin preparation device according to claim 6, wherein the start switch is a start time switch that starts the water time switch at a set time.

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