JP3755357B2 - Water softener regeneration management device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ion exchange resin regeneration management device filled in a water softener for producing soft water used for boiler water supply and the like. The present invention relates to a water softener regeneration management device for preventing a trouble of a boiler system caused by the problem.
[0002]
[Prior art]
In order to prevent the hardness component from flowing into the boiler, soft water from which the hardness component has been removed is used as boiler feed water. For the production of this soft water, a water softener filled with an ion exchange resin in a container, a regeneration unit for regenerating the water softener, a salt water tank for storing salt water, raw water (hard water) and salt water for the water softener A water softener provided with control means for controlling the water flow is used.
[0003]
If this water softener does not operate normally, hardness components will flow into the boiler, resulting in a decrease in the thermal efficiency of the boiler and, consequently, a decrease in the operating efficiency of the entire process using the steam of the boiler, and various other problems. Become.
[0004]
As a cause of the malfunction of the water softener, there is a regeneration failure of the ion exchange resin of the water softener. This regeneration failure is often caused by a decrease in the salt concentration of salt water in the salt water tank used for regeneration.
[0005]
Conventionally, as a method for managing the performance of a water softener, a method has been proposed in which a means for detecting a hardness component is provided at the outlet pipe of the water softener and the water softener is regenerated when it is detected that the hardness component has leaked. However, since this method can only know the regeneration time, it cannot prevent the regeneration failure caused by the salt concentration decrease in the salt water tank as described above. In order to prevent regeneration failure due to a decrease in the salt concentration of salt water in the salt water tank, it is necessary to reliably manage the salt concentration and the amount of salt water in the salt water tank.
[0006]
Conventionally, as a means for measuring the salt concentration of salt water, there is an analytical instrument for measuring the concentration using the refractive index of salt water. However, since this measurement is performed manually, it requires a lot of labor and time. When an automatic analyzer for refractive index is applied in the field, the equipment cost increases, so there is no actual application example. On the other hand, there is a problem that when taking the test water and analyzing the instrument, it takes a long time until the analysis result is obtained, so that it cannot be promptly handled. Moreover, such manual analysis has been difficult to apply due to the uncertain timing of water softener regeneration.
[0007]
As a method for easily measuring the salt concentration, it is conceivable to measure the electrical conductivity of salt water. However, since such an apparatus is expensive, it is difficult to apply from the economical aspect, and to some extent, If the salt water is not low in salt concentration, the change in electrical conductivity corresponding to the change in salt concentration cannot be sufficiently detected, resulting in poor measurement accuracy and problems in terms of reliability.
[0008]
[Problems to be solved by the invention]
An object of this invention is to provide the regeneration management apparatus of the water softener provided with the function which raises this density | concentration when the density | concentration of salt water runs short.
[0009]
[Means for Solving the Problems]
The water softener regeneration management device of the present invention is a water softener regeneration management device comprising a salt water tank for storing salt water used for regeneration of an ion exchange resin filled in the water softener, wherein the salt water concentration in the salt water tank is determined. A water softener comprising: a salt water concentration detecting means for detecting; and a salt water concentration increasing means operated to increase the salt water concentration in the salt water tank when the salt water concentration detected by the salt water concentration detecting means is lower than a prescribed concentration . In this regeneration management device, the means for increasing the salt water concentration in the salt water tank is a stirring device for stirring the salt water in the salt water tank .
[0010]
In such a water softener regeneration management device, when the salt water concentration in the salt water tank is insufficient to the specified concentration, the operation of increasing the salt water concentration in the salt water tank is automatically executed, so the next regeneration operation is performed. It can be executed without any problems.
[0011]
Means for raising the brine concentration of the salt in the water tank, Ru stirrer der for agitating the brine in the salt water tank.
[0012]
When the agitation apparatus is operated to agitate the salt water in the salt water tank, the salt particles that have settled in the tank rise and are promoted to dissolve in low-concentration salt water, thereby increasing the salt water concentration.
[0013]
In the present invention, a water level detecting means for detecting the water level in the salt water tank, means for detecting the reproduction operation of the water softener on the basis of a descent of the detection level of the water level sensing unit, a low concentration of salt water than normal concentration It is preferable to provide alarm means for generating an alarm when supplied to the water softener.
[0014]
In the present invention, the salt water concentration detecting means may detect the concentration by a float using the fact that the buoyancy changes according to the specific gravity of the salt water.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments will be described in detail with reference to the drawings. FIG. 1 is a system diagram of a water softener regeneration management device according to an embodiment.
[0016]
The salt water tank 1 supplies reclaimed salt water to the water softener 3 via the pipe 2, and raw water for preparing salt water can be introduced into the tank from the water softener 3 side. In the lower part of the salt water tank 1, solid salt is deposited. An air diffuser 4 is installed at the bottom of the salt water tank 1 as a stirrer to raise the settled salt to promote dissolution, and air can be supplied from the compressor 6 to the air diffuser 4 via the air pipe 5. It is said that.
[0017]
In order to prevent the undissolved salt and the concentration sensor 8 from coming into direct contact with each other, the mesh 7 is installed in the salt water tank 1, and the concentration sensor 8 and the water level sensor 9 are provided in a region surrounded by the mesh 7. It has been. As this concentration sensor 8, buoyancy is increased by increasing the concentration of salt water, and a float type that outputs a signal when receiving a buoyancy of a predetermined level or more is inexpensive and suitable. However, a Na ion electrode, a Cl ion electrode, Any other device such as an inexpensive high-performance electric conductivity meter may be used.
[0018]
As the water level sensor 9, a float type in which the float operates a limit switch or a reed switch when the water level in the salt water tank 1 reaches a predetermined water level is inexpensive and suitable, but an electrode type, an optical type, an ultrasonic type, etc. Any one may be used.
[0019]
The output signals of these sensors 8 and 9 are input to the controller 10, and the controller 10 gives signals to the compressor 6, the concentration decrease indicator 11 and the alarm device 12. Further, the controller 10 transmits data to the host computer 13 using the communication line 14, stores the operation history in the host computer 13, and uses this data for maintenance management. Note that various alarm devices such as a buzzer and a lamp can be used. As the display 11, various types such as a lamp and a liquid crystal panel can be used.
[0020]
Raw water is introduced into the salt water tank 1 from the pipe 2 so that the water level detected by the water level sensor 9 becomes a predetermined water level. When the water level sensor 9 outputs a signal indicating that the predetermined water level is detected, the controller 10 looks up the concentration of the concentration sensor 8, and when the concentration is lower than the predetermined concentration, the concentration lowering display 11 displays an insufficient concentration. Then, the compressor 6 is operated for a predetermined time, air is blown out from the air diffusion pipe 4, and the salt in the salt water tank 1 is bubbled and stirred. After a predetermined time has elapsed, the compressor 6 is stopped and the density of the density sensor 8 is looked up. The compressor 6 is operated repeatedly until this concentration reaches a predetermined concentration. Note that the compressor 6 may be continuously operated until the concentration reaches a predetermined concentration.
[0021]
When the density reaches a predetermined density, the display of the density reduction indicator 11 is stopped. And it waits for the salt water in this salt water tank 1 to be used for reproduction | regeneration. Note that the compressor 6 may be operated intermittently to prevent caking of the precipitated salt.
[0022]
When salt water in the salt water tank 1 is sent out to the pipe 2 for regeneration of the water softener 3, the detection water level of the water level sensor 9 becomes lower than a predetermined water level. After that, the raw water is replenished, and the detected water level is restored to the predetermined water level. Therefore, it is detected that salt water has been used for regeneration by detecting the decrease and re-rise of the detected water level from the signal of the water level sensor 9. In the description of FIG. 1, stirring by air diffusing is used as the salt water concentration increasing means, but screw stirring by a motor or convection stirring using heater heating can also be used.
[0023]
The controller 10 does not operate the alarm device 12 when the salt water concentration sent for regeneration has reached a predetermined concentration, but before the salt water concentration has yet reached the predetermined concentration (or because of salt shortage). When the salt water is sent out (when the predetermined concentration cannot be reached), the alarm device 12 is activated to notify the manager that the water softener 3 has failed to be regenerated.
[0024]
【The invention's effect】
As described above in detail, according to the water softener regeneration management device of the present invention, by performing unprecedented automatic determination, management can be saved and the water softener can be reliably regenerated. As a result, it is possible to reduce troubles due to the inflow of hardness into the boiler, to maintain thermal efficiency, and to improve the efficiency of the entire process using boiler steam.
[Brief description of the drawings]
FIG. 1 is a system diagram of a water softener regeneration management device according to an embodiment;
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Salt water tank 4 Aeration pipe 6 Compressor 8 Concentration sensor 9 Water level sensor 10 Controller 11 Concentration drop indicator 12 Alarm device

Claims (3)

In the regeneration management device for a water softener equipped with a salt water tank for storing salt water used for the regeneration of the ion exchange resin filled in the water softener,
Salt water concentration detecting means for detecting the salt water concentration in the salt water tank;
A water softener regeneration management device comprising salt water concentration increasing means operated to increase the salt water concentration in the salt water tank when the salt water concentration detected by the salt water concentration detecting means is lower than a prescribed concentration ,
The means for increasing the salt water concentration in the salt water tank is a stirrer for stirring the salt water in the salt water tank . A water level detecting means for detecting fraud and mitigating risk level of the salt water tank in claim 1,
Means for detecting a reproduction operation of the water softener on the basis of a descent of the detection level of the water level detection means,
A water softener regeneration management device comprising alarm means for generating an alarm when salt water having a concentration lower than a prescribed concentration is supplied to the water softener. 3. The water softener regeneration management device according to claim 1 or 2 , wherein the salt water concentration detecting means detects the concentration by a float using the fact that the buoyancy changes according to the specific gravity of the salt water.

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