JPH0330442Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention relates to a storage tank that stores rainwater and can be used as gray water other than drinking water, and aims to provide a storage tank that is particularly suitable for home use. It is something to do.

(Conventional technology) Conventionally, in order to save water at home,
Rainwater is often collected for purposes such as washing, watering toilets and baths, watering gardens, ponds, and washing cars.

However, conventional rainwater storage simply collects and stores rainwater that falls on the roof, so the stored water may rot, or dust and dirt that has fallen on the roof may flow with the rainwater and accumulate in the storage tank. There was a risk of damage to the pump, etc.

(Problem that the invention aims to solve) The idea is to store rainwater with less dirt and to prevent the stored water from spoiling, so that it can be used as gray water for toilets, laundry, etc. be.

(Means for Solving the Problems) In order to solve the above problems, the means taken by this invention are as follows: A tank 1 whose upper surface is closed with a lid 2 or the like to have a light-shielding property, and a constriction part 4. It consists of a water receiving tube 3 or a water receiving tank 22 that can drain rainwater with a limited flow rate, and a constriction part 4 is connected to a drain pipe 5,
It is characterized in that rainwater overflows from the upper part of the water tank or water tank and flows into the tank 1.

(Function) Since the rainwater that has flowed into the water tank or water tank is discharged while the flow rate is restricted by the constriction part, the initial rainwater containing dust and dust on the roof can be discharged, and only clean rainwater can flow into the water pipe or water tank. Water overflows from the top of the tank and is stored in the tank. Furthermore, since the tank is equipped with a lid and is shielded from light, it is possible to suppress the generation of bacteria and anaerobic organisms within the tank and prevent stored water from spoiling.

(Effects of the invention) According to this invention, it is possible to drain the initial rainwater containing dirt and dust that has accumulated on the roof, and store only clean rainwater, and it is also possible to prevent the water stored in the tank from rotting. Rainwater can be stored in a condition suitable for use as gray water.

(Embodiment) The drawings show a preferred embodiment of this invention, and with reference to FIG. has. Reference numeral 3 denotes a rainwater receiving pipe arranged outside the tank 1, and the upper end is connected to a gutter on the roof or the like. The lower end of the water receiving cylinder 3 is connected to a discharge pipe 5 via a constriction part 4. The water receiving cylinder 3 communicates with the upper part of the tank 1 through an overflow passage 6 at its upper part.

Rainwater falling on the roof is collected by a gutter or the like and flows into the water receiving tube 3. When the water level in the water tank 3 reaches the overflow passage 6, it overflows and flows into the tank 1.
Until the water level reaches , the rainwater is discharged to the discharge pipe 5 while being throttled by the constriction part 4. In this way, the initial rainwater containing dirt and dust accumulated on the roof is drained, and there is no possibility that rainwater contaminated with dirt and dust will be stored in the tank 1.

Reference numeral 7 denotes an overflow tube that maintains the water level in the tank 1 at a constant level, and its lower end is connected to the discharge pipe 5. The upper end of the overflow pipe 7 is the tank 1
The tank 1 is connected to the bottom of the tank 1 with a small gap between the tank 1 and the rising tube 8 which terminates therein, so that the water stored near the bottom of the tank 1 can be overflowed and drained.

Reference numeral 9 denotes a take-out pipe connected to the tank 1 through a tank 10, and as shown in FIG.
It is connected to a water distribution pipe 12 to a water sprinkler, a pond, a car wash 16, etc. The take-out pipe 9 is connected to the tank 1 slightly above the bottom of the tank 1 to prevent water from being taken out near the bottom.

The inner surfaces of the tank 1 and the lid 2 are preferably painted in a dark color to improve light-shielding properties and prevent the generation of anaerobic microorganisms and the proliferation of bacteria, and the growth of aerobic microorganisms is promoted by spreading artificial grass or the like. Purify water.

FIG. 2 shows a modification of this idea, in which the tank 1 and the lid 2 are integrally formed, and the water receiving cylinder 3 is installed inside the tank 1. Further, the take-out pipe 9 is connected by a float 17 to a float suction pipe 18 from which the supernatant liquid in the tank 1 can be taken out.

A mesh plate 20 is provided on the upper part of the lid 2, and a water receiving tray 19 is disposed therein, and an outlet 21 from the water receiving tray 19 is aligned with the upper part of the water receiving cylinder 3.

As a result, rainwater is received by the water receiving tray 19, large debris such as fallen leaves is removed by the mesh plate 20, and the rainwater flows into the water receiving tube 3. Further, the supernatant liquid in the tank 1 can be taken out by a float suction pipe 18 having a float 17. Other points are similar to those shown in FIG.

FIG. 3 shows still another embodiment, in which a water receiving tank 22 is formed on the upper surface of the lid 2 covering the upper part of the tank 1,
A constriction part 4 is provided at the lower part of one side of the water tank 22 to drain out the initial inflow of rainwater, and an overflow tube 23 is provided upright from the bottom of the tank to allow the upper liquid in the water tank 22 to overflow. Flow into tank 1.
A floating lid 24 is attached to the overflow tube 23, and the water receiving tank 2
The overflow pipe 23 is opened and closed depending on the water level in the tank 2. Other points are similar to those shown in FIGS. 1 and 2.

[Brief explanation of the drawing]

The drawings show an embodiment of this invention,
1, 2, and 3 are sectional views showing modified examples of the storage tank according to this invention, and FIG. 4 is a water distribution circuit diagram. 1...tank, 2...lid, 3...water tank, 4...
... Throttle part, 5 ... Drain pipe, 6 ... Overflow passage, 7 ... Overflow pipe, 8 ... Rising pipe,
9...Takeout pipe, 10...Kotuku, 11...Pump, 12...Water pipe, 13...Washing, 14...
Toilet, 15...Bath, 16...Water spray, pond, car wash, 17...Float, 18...Float suction pipe, 19...Water tray, 20...Net plate, 21...
...Outlet, 22...Water tank, 23...Overflow tube, 2
4...Floating lid.

Claims (1)

[Scope of utility model registration request] It consists of a tank 1 whose upper surface is closed with a lid 2 etc. to provide light-shielding properties, and a water receiving tube 3 or water tank 22 which is equipped with a constriction part 4 and allows rainwater to flow out while restricting the flow rate. A rainwater storage tank characterized in that it is connected to a pipe 5 so that rainwater overflows from the upper part of the water cylinder or water tank and flows into the tank 1.