JPH08229551A - Water softener system capable of preventing omission of hardness treatment - Google Patents

Abstract

PURPOSE: To provide a system capable of preventing water caused omission of hardness treatment from being used. CONSTITUTION: A branching piping 5 for preventing the water taken out from a water softener 3 from being charged into a softened water tank 9 is provided in the middle of a water softening pipe 2. After the lapse of set time from stop of water passing, or in the case of restarting water passing to the water softener, to which water passing has been stopped, the water in the water softener is fed to the branching piping, thus the water is prevented from being fed to the softened water tank 9.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water softener using an ion exchange resin, and more specifically, a water softener capable of preventing hardness leakage caused by stopping water flow to the resin layer of the water softener. System.

[0002]

2. Description of the Related Art When it is necessary to perform softening treatment of water such as boiler water supply, a water softener is widely used for removing the hardness component by passing water between ion exchange resins. However, in the case of this water softener, hardness leakage occurs when water is not passed through the resin layer, and when the soft water supply is restarted, water having hardness leak is sent to the equipment using soft water.

[0003]

SUMMARY OF THE INVENTION An object of the present invention is to provide a water softener system capable of preventing water leaking hardness from being supplied.

[0004]

[Means for Solving the Problems] A structure in which a raw water pipe for introducing raw water into a water softener and a soft water pipe for sending soft water from a water softener to a soft water tank are connected to a water softener, and an ion exchange resin in the water softener is used for softening treatment. Therefore, in the water softener system in which water is intermittently supplied to the water softener, the water is drained or circulated to the upstream side of the water softener so that the water taken out from the water softener does not reach the soft water tank in the middle of the water softener piping. Branch pipes to be used, a water flow control device that controls water flow to each of the soft water tank and the branch pipes, and a timer device that measures the time of a water flow stop time when water is not flowing to the water softener, respectively. Normally, do not allow water to flow through the branch pipes, and if the set time has elapsed after stopping water flow,
The water in the water softener is drained or circulated upstream of the water softener through a branch pipe. In addition, immediately before resuming water supply to the softener that has stopped water supply, the water in the water softener is circulated to the drainage or upstream of the water softener through a branch pipe.

Further, a water level detecting device for detecting the water level in the soft water tank at a plurality of heights, and a water flow rate adjusting means for increasing / decreasing the water flow rate to the water softener are respectively provided, and the water level detecting section on the low side of the water level in the soft water tank is provided. When the water level is between the low-side water level detection unit and the high-level water level detection unit, the water flow amount to the water softener is reduced when the water level is between the low-level water level detection unit and the high-level water level detection unit.

[0006]

[Function] Water that has caused a hardness leak by stopping water flow is drained through a branch pipe or circulated upstream of the water softener for softening treatment again, so that hardness components are prevented from being sent to equipment using water softener. You can Also, the water flow to the water softener stops when the water level in the soft water tank exceeds the set level, but when the water level in the soft water tank becomes higher than the set water level that is lower than the water level at which water flow stops. By reducing the amount of water to be passed to the water softener, the water level in the soft water tank is less likely to rise to the water stop level, and hardness leakage can also be prevented by shortening the time when water is stopped.

[0007]

An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a flow chart of an embodiment relating to claim 1, and FIG. 2 is a time chart thereof. A raw water pipe (1) for supplying raw water to the water softener (3) and a soft water pipe (2) for taking out soft water from the water softener (3) and sending it to the soft water tank (9) are provided. A water flow control valve (4) is installed in the. The other end of the branch pipe (5) branched from the soft water pipe (2) between the water softener (3) and the water flow control valve (4) is connected to the raw water pipe (1) upstream of the water softener (3). It is connected, and the branch pipe (5) has a circulation pump (6) and a check valve.
(7) is provided. Water flow is controlled by a control device (8) with a timer device, and the control device (8) is installed in the water flow control valve (4), circulation pump (6), and soft water tank (9). It is connected to the water level detection device (10).

Water level detection device (10) provided in the soft water tank (9)
Detects the presence or absence of water at the water level E1, and when the absence of water at the water level E1 is detected, the control device (8) opens the water flow control valve (4) and stops the circulation pump (6). In this state, the raw water is supplied to the water softener (3), and the raw water supplied into the water softener (3) has its hardness component removed by the ion-exchange resin in the water softener (3) to become soft water. The soft water is taken out by the soft water pipe (2) and stored in the soft water tank (9), and the soft water using device (not shown) uses the soft water stored in the soft water tank (9).

The water level in the soft water tank (9) rises and the water level E1
When the presence of water is detected in, the water flow to the water softener (3) is stopped and the generation of soft water is interrupted. The control device (8) closes the water flow control valve (4) and starts the operation of the internal timer device.
Set time (T) that was previously entered for the water flow stop time
When it reaches, the water flow control valve (4) is closed and the circulation pump (6) is operated for a certain period of time. When the circulation pump (6) is activated, the water in the water softener (3) is removed from the soft water pipe (2) and the branch pipe.
Return to raw water pipe (1) through (5). When the circulation pump (6) is stopped and water flow is stopped, the timer device measures the time again, and the circulation pump (6) is reached every time the set time (T) is reached.
Operate. Even if hardness leakage occurs due to the stoppage of water flow, water is again passed to the water softener (3) for softening treatment, and when soft water supply to the soft water tank (9) is restarted, softened soft water Only water is sent to the soft water tank (9), which prevents leaking water.

Water may be supplied to the branch pipe (5) immediately before the water supply is restarted to the water softener that has been stopped, and if the water leaking hardness is to be drained, it may be circulated. There is no need to install a pump, just a drain valve.

FIG. 3 is a flow chart of an embodiment relating to claim 3, and FIG. 4 is a time chart in the embodiment.
Raw water piping (1) for supplying raw water to the water softener (3) and water softener (3)
There is a soft water pipe (2) that takes out more soft water and sends it to the soft water tank (9) .In the middle of the soft water pipe (2), the water flow control valve (11) that can adjust the opening to fully open, half open, or fully closed. ) Is provided. Further, the soft water tank (9) is provided with a water level detection device (10) for detecting the presence or absence of water at different heights of the water flow stop water level E1 and the water flow reduction water level E2, and the water flow rate control valve (11). The control device (8) that adjusts the opening degree of adjusts the opening degree of the water flow rate control valve (11) according to the water level of the soft water tank (9).

When the water level detecting device (10) detects that there is no water at the water level E1 and that there is water at the water level E2, the control device (8)
Opens the water flow rate control valve (11) halfway to pass a small amount of water. When the water level rises and water is detected even at the water level E1, the water flow control valve (11) is closed to cut off the water flow. On the contrary, when the water level is lowered and the water level E2 detects the absence of water, the water flow control valve is fully opened to secure the soft water amount. By opening the water flow rate control valve (11) halfway and allowing a small amount of water to flow, the time for stopping the water flow can be shortened, and hardness leakage is less likely to occur.

As means for adjusting the water flow rate,
The soft water pipe is branched, and a water flow control valve is provided in each of the branched pipes. When the water level in the soft water tank rises to E2 or higher, one water flow control valve is closed to reduce the amount of water flow, When the temperature further rises to reach E1, the other water flow control valve may be closed to cut off the water flow for adjustment.

[0014]

EFFECTS OF THE INVENTION By carrying out the present invention, the stoppage time of water flow can be shortened and hardness leakage can be prevented. Also, if hardness leaks occur while water is stopped,
Since the hardness component is removed, it is possible to prevent the supply of hard water containing the hardness component when resuming water flow.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment according to claim 1.

FIG. 2 is a time chart of an embodiment according to claim 1.

FIG. 3 is a block diagram of an embodiment related to claim 3;

FIG. 4 is a time chart of an embodiment related to claim 3;

[Explanation of symbols]

 1 Raw water pipe 2 Soft water pipe 3 Water softener 4 Water flow control valve 5 Branch pipe 6 Circulation pump 7 Check valve 8 Control device 9 Soft water tank 10 Water level detection device 11 Water flow control valve

Claims (3)

[Claims] 1. A water softener comprising a raw water pipe for introducing raw water into the water softener and a soft water pipe for sending soft water from the water softener to a soft water tank, which is connected to the water softener and is softened by an ion exchange resin in the water softener. In the water softener system in which water is intermittently supplied, in the middle of the water softener piping, branch water that drains water or circulates water to the upstream side of the water softener so that the water taken out from the water softener does not reach the water softener tank, A water flow control device that controls water flow to each of the soft water tank and the branch pipe, and a timer device that measures the water flow stop time during which no water is being flowed to the water softener are provided. It is characterized in that the water in the water softener is circulated to the drainage or upstream of the water softener through a branch pipe when the set time has elapsed since the water flow was stopped. hardness Prevent water softener system is. 2. The hardness leak prevention water softener system according to claim 1, wherein the water in the water softener is drained or softened through a branch pipe immediately before water is restarted to the softener which has stopped water flow. A hardness leak prevention water softener system characterized by being circulated upstream. 3. A water softener comprising a raw water pipe for introducing raw water to the water softener and a soft water pipe for sending soft water from the water softener to a soft water tank, which is connected to the water softener to perform softening treatment by an ion exchange resin in the water softener. In the water softener system, which is performed intermittently, the water level detection device that detects the water level in the water softener tank at multiple heights, and the water flow rate adjustment means that increases or decreases the water flow to the water softener are respectively provided. When the water level in the tank is lower than the water level detection part on the low side, the water flow to the water softener is maximized, and when the water level is between the low level water level detection part and the high level water level detection part, the water softener is used. A hardness leak prevention water softener system characterized by reducing the amount of water passing through.