JPH0913434A - Intermediate water storage tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intermediate water storage tank, in which if water in the tank is out, minimum quantity of water can be automatically supplied from another water supply part so as to stably supply water from the tank. SOLUTION: When the quantity of water stored in a tank 6 amounts to a designated quantity or less, an opening and closing device 11 of a water supply pipe 8 is automatically opened by a sensor part disposed in the tank 6, so that water is supplied to the tank 6 through another water supply part. When the quantity of water stored in the tank 6 amounts to a designated quantity or more, the opening and closing device 11 of the water supply device 8 is automatically closed to stop the supply of water, so that the minimum quantity of water in the tank 6 can be always secured, and a management work load of water in the tank 6 can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system for storing rainwater or the like and using it as middle water such as flush toilet water and laundry water.

[0002]

2. Description of the Related Art Conventionally, the water collecting section mainly collects precipitation on buildings, etc.
For example, it is stored in a tank, etc. as a water storage part via a rain gutter, etc., and the water stored in this tank is pumped up by a pump etc. to be used as flush water for flush toilets, washing water, etc. There are known systems for infiltration into the ground or discharge into the sewer pipe.

However, since the amount of water stored in such a tank depends on the amount of rainfall, the amount of water in the tank can be reduced especially when the amount of water used exceeds the amount of rainfall. There was a risk that all of them would be used up, water could not be supplied when needed, and sedimented mud could be pumped up.

Therefore, for example, a water supply pipe or the like is connected to a tank so that the minimum required water can be supplied from the water supply pipe into the tank when the water in the tank is exhausted.

[0005]

However, since many of these tanks are usually buried underground, it is difficult to confirm the amount of water stored in the tank. At that time, he recognized that the water in the tank had run out, and each time he needed to open the water supply to replenish it, and after that, he had to close it himself.

In such a case, since it is not possible to confirm how much water has been replenished, there is a case where the water is used up again after the water is replenished.

The present invention has been made by paying attention to such a problem, and when the water in the tank is exhausted, the minimum necessary amount of water is automatically supplied from the other water supply parts, and the water in the tank is automatically supplied. It is an object of the present invention to provide a medium water storage tank that can stably supply water from the above.

[0008]

In order to solve the above-mentioned problems, a tank for storing gray water according to the present invention is provided with a water collecting port for taking in gray water such as rainwater, and the water in the tank is supplied to an external supply section. A tank for storing medium water, comprising: a supply pipe for supplying water, a water supply pipe communicating with another water supply unit through an opening / closing device, and an overflow pipe for discharging surplus water, at least the supply pipe in the tank. A sensor part is provided above the lower end of the water supply pipe, and the sensor part is linked to at least the opening / closing device of the water supply pipe, and when the amount of water in the tank becomes a predetermined amount or less, the opening / closing device of the water supply pipe is automatically opened. It is characterized in that it is automatically closed when the amount exceeds a predetermined amount.

In the medium water storage tank according to the present invention, the sensor portions are provided at upper and lower portions separated by a predetermined distance, and when the water level in the tank becomes lower than the lower sensor portion, the opening / closing device of the water supply pipe is opened. It is preferable that the opening / closing device is closed when the upper sensor portion is reached.

In the medium water storage tank of the present invention, a float as a sensor portion is provided at one end of a connecting member rotatable about an axis, and the other end is connected to an opening / closing device for a water supply pipe. It is preferable that the opening / closing device is opened / closed by the displacement movement of the float.

In the tank for storing medium water according to the present invention, when the water level in the tank becomes lower than the lower sensor section, the driving of the pump device is stopped and the outflow of water flowing through the supply pipe is stopped. preferable.

[0012]

When the amount of water stored in the tank becomes less than the predetermined amount, the sensor part provided in the tank automatically opens the opening / closing device of the water supply pipe, so that water is supplied from the other water supply part into the tank. . Then, when the amount of water stored in the tank exceeds a predetermined amount, the opening / closing device of the water supply pipe is automatically closed and the water supply is stopped, so that the minimum amount of water required in the tank is always secured, and The work of managing the water in the tank is reduced.

Sensor parts are provided at upper and lower positions separated by a predetermined distance, and when the water level in the tank is lower than the lower sensor part, the opening / closing device of the water supply pipe is opened, and when the upper sensor part or more is opened, If the opening / closing device is closed, the water stored in the tank will be used up as much as possible, and then the water supply will be minimal.

A float serving as a sensor portion is provided at one end of a connecting member rotatable about an axis, and the other end is connected to a water supply pipe so that the displacement movement of the float causes the float to open and close. In this case, a device using a power source or the like becomes unnecessary, so that breakdowns and the like are reduced, maintenance is facilitated, and cost can be reduced.

By stopping the pump device when the water level in the tank falls below the lower sensor section, the danger of pumping up the mud below the tank can be prevented.

[0016]

Embodiments of the present invention will now be described with reference to the drawings. First, FIG. 1 shows a schematic diagram of a rainwater utilization system using a tank for storing water in a water storage device according to an embodiment of the present invention. The whole is composed of a water collecting part 1, a water storing part 2 and a draining part 3.

The water collecting section 1 is composed of a gutter 5 for collecting water falling on the roof of the building 4 and a gutter pipe 5a connected to a tank 6 as a water storage section 2. In this embodiment, the filter bodies 7 having a proper filtering function are provided at two places in the gutter pipe 5a, so that the collected impurities such as rainwater are purified to some extent here, and then the tank. It is designed to be introduced into the inside of 6.

In the tank 6, in particular, as shown in FIG. 2, in addition to the gutter pipe 5a, a water supply pipe 8 extending from another water supply portion (not shown), and water in the tank 6 are externally provided at appropriate places. There is provided a supply pipe 9 for supplying the water to the outlet and an overflow pipe 10 linked to the drainage section 3.

A solenoid valve 1 is provided at a predetermined position of the water supply pipe 8.
1 is provided so that the water supply from the other water supply section into the tank 6 can be automatically adjusted. Further, the lower end opening 8a of the water supply pipe 8 in the tank 6 is formed so as to be located at least above the overflow pipe 10, and the inside water in the tank 6 may flow into the water supply pipe 8. Since it does not exist, for example, there is no problem even if the water supply pipe 8 is a water supply pipe.

A pump device 12 is attached to the end of the supply pipe 9 extending to the vicinity of the bottom surface of the tank 6, and by operating the pump device 12 to pump up the water in the tank 6, for example, for construction. Water can be supplied to the flush toilet, bathroom, laundry, etc. in the article 4. Also, 13
Is a sterilizing device for administering chlorine, for example, in order to sterilize the gray water to be supplied to each part.

Reference numeral 15 is a water level sensor as a sensor portion, which comprises a sensor 15a provided in the supply pipe 9 above the pump device 12, and a sensor 15b provided further above the sensor 15a by a predetermined distance.
Signals are sent from the sensors 15a and 15b to the control device 21 in FIG.

The overflow pipe 10 extending outward from the tank 6 is connected to a cylindrical body 16 having a large number of small holes formed in its peripheral surface as shown in FIG. Since the cylindrical body 16 is arranged in sand or crushed stone laid on the bottom of a hole dug in the ground, the overflow pipe 1
The surplus water in the tank 6 that flows in from 0 is made to penetrate into the ground. Further, the water that cannot penetrate into the ground at this stage is further discharged to the sewer pipe 17 through the overflow pipe 10 '.

Next, the operation of the medium water storage tank of the rainwater utilization system thus constructed will be described with reference to FIGS. 1 to 3. First, as shown in FIG. And the like are stored in the tank 6 as the water storage unit 2 by the water collection unit 1. When the amount of water stored in the tank 6 becomes equal to or larger than a predetermined amount, excess water is collected in the overflow pipe 10
It is adapted to be infiltrated underground by the drainage section 3 via or through to the sewer pipe 17.

When the user uses water in each supply unit 18 such as a flush toilet downstream of the supply pipe 9, the on-off valve 19 provided in the supply pipe 9 near each supply unit 18 is opened. (See FIG. 3). This is detected by the sensor unit 20, the pump unit 12 in the tank 6 is operated via the control unit 21, and the water in the tank 6 is sent to each supply unit 18 via the supply pipe 9 as much as necessary. When the opening / closing valve 19 is closed, the pump device 12 is stopped.

When the amount of water stored in the tank 6 decreases and the water level falls below the sensor 15a, the sensor 1
5a is an electromagnetic opening / closing valve 11 of the water supply pipe 8 via the control device 21.
Is automatically opened, water from another water supply unit is supplied to the tank 6. When the water level rises due to this water supply and reaches the position of the sensor 15b, the sensor 1
5b closes the electromagnetic on-off valve 11 via the control device 21, and the water supply is stopped.

As described above, in the medium water storage tank of the present invention, the stored rainwater can be positively utilized, and
Even if the amount of stored water in the tank 6 decreases, water is automatically supplied from other water supply units, so that water cannot be supplied from the tank 6 to each supply unit. Further, since the water is automatically supplied, the management burden of the user checking the amount of water stored in the tank 6 and supplying water as necessary is reduced.

Further, since the water supply from the other water supply section is automatically stopped after the predetermined amount of water is supplied, it is possible to prevent accidentally supplying an unnecessarily large amount of water. Thus, when water is supplied from the water supply, the cost of using water can be reduced.

FIG. 4 shows another embodiment of the present invention, in which a float 24 as a sensor portion is provided at one end of a connecting rod 23 which rotates about a shaft 22 and the other end of the water supply pipe 8 is provided. An opening / closing plug 25 that can open and close the opening 8a of the water supply pipe 8
It is designed to automatically supply water from.
Here, even if the inside water flows into the tank 6 and the water level rises to the level of the broken line, there is no influence on the closed state of the opening / closing plug 25.

As a result, the water supply from the other water supply section can be automatically performed without requiring a power source, so that the cost of the apparatus can be reduced.

Further, using the controller 21 of the first embodiment or the connecting rod 23, the float 24, etc. of the second embodiment,
When the water level in the tank becomes lower than the lower sensor part, the pump device 12 is forcibly turned off to stop the outflow of water from the supply pipe 9, and the mud accumulated in the lower part of the tank is supplied together with the water. You can prevent the risk of doing.

Although the embodiments of the present invention have been described above with reference to the drawings, the specific configuration is not limited to these embodiments, and even if there are changes and additions within the scope not departing from the gist of the present invention, the present invention is not limited. Included in the invention.

For example, the water may be automatically closed after being once opened by the sensor unit or after supplying a predetermined amount of water preset by the flow meter.

Further, the pump device 12 may be provided outside the tank 6 at a predetermined position of the supply pipe.

[0034]

The present invention has the following effects.

(A) According to the first aspect of the invention, when the amount of water stored in the tank becomes less than a predetermined amount, the sensor portion provided in the tank automatically opens the water supply pipe. Water is supplied from other water supply units. When the amount of water stored in the tank exceeds a certain amount, the water supply pipe is automatically closed and the water supply is stopped, so that the minimum amount of water required in the tank is always secured and The burden of water management work is reduced.

(B) According to the second aspect of the present invention, the sensor portions are provided at upper and lower portions at predetermined distances, respectively,
If the water level in the tank drops below the lower sensor, the water pipe opening / closing device is opened, and if the water level in the tank is above the upper sensor, the water opening / closing device is closed. Water can be supplied after the water has been used up as much as possible.

(C) According to the invention of claim 3, a float as a sensor portion is provided at one end of the connecting member rotatable about the shaft, and the other end is connected to the opening / closing device of the water supply pipe. If the opening / closing device is opened / closed by the displacement movement of the float, a device using a power source or the like is not particularly required, so failures and the like are reduced, maintenance is facilitated, and cost is reduced. be able to.

(D) According to the invention of claim 4, if the pump device is stopped when the water level in the tank becomes lower than the lower sensor part, there is a risk that the mud below the tank will be pumped up. Can be prevented.

[0039]

[Brief description of the drawings]

FIG. 1 is an overall view showing a rainwater utilization system using a medium water storage tank.

FIG. 2 is an enlarged sectional view of a main part of FIG.

FIG. 3 is a schematic diagram showing the configuration of each device.

FIG. 4 is a schematic view showing another embodiment of the present invention.

[Explanation of symbols]

 1 Water collection part 2 Water storage part 3 Discharge part 4 Building 5 Gutter 5a Gutter pipe 6 Tank 7 Filter body 8 Water supply pipe 8a Opening 9 Supply pipe 10, 10 'Overflow pipe 11 Electromagnetic on-off valve (switching device) 12 Pumping device 13 Sterilizer 15 Water level sensor 15a Sensor 15b Sensor 16 Cylindrical body 17 Sewer pipe 18 Supply section 19 Open / close valve 20 Sensor section 21 Controller 22 Shaft 23 Connecting rod 24 Float 25 Open / close stopper

Claims (4)

[Claims] 1. A water collecting port for taking in water such as rainwater, a supply pipe for supplying water in a tank to an external supply unit, and a water supply pipe communicating with another water supply unit through an opening / closing device. A tank for storing intermediate water, comprising an overflow pipe for discharging excess water, wherein a sensor unit is provided at a position above at least a lower end portion of the supply pipe in the tank, and the sensor unit is provided at least for opening and closing the water supply pipe. The device is linked to the device, and when the amount of water in the tank becomes less than a predetermined amount, the opening / closing device of the water supply pipe is automatically opened, and when it becomes more than the predetermined amount, it is automatically closed. Water storage tank. 2. The sensor units are provided at upper and lower positions separated by a predetermined distance respectively, and when the water level in the tank is lower than the lower sensor unit, the opening / closing device of the water supply pipe is opened, and the upper sensor unit or more is opened. In this case, the open / close device is closed. 3. A float as a sensor portion is provided at one end of a connecting member rotatable about an axis, and the other end is connected to an opening / closing device of a water supply pipe, and the opening / closing device is displaced by a displacement motion of the float. The medium water storage tank according to claim 1, wherein the tank is opened and closed. 4. The gray water according to claim 2, wherein when the water level in the tank falls below the lower sensor section, the driving of the pump device is stopped and the outflow of water flowing through the supply pipe is stopped. Storage tank.