JP4656884B2 - Rainwater storage tank - Google Patents

Description

The present invention relates to a rainwater storage tank that collects rainwater that has fallen on a roof of a building for use as watering or emergency water.

There has been proposed a rainwater storage device that stores rainwater that has fallen on the roof of a building and uses this rainwater for watering or emergency water (see, for example, Patent Document 1). In the rainwater storage device described in Patent Document 1, rainwater from a gutter is guided to the horizontal portion from the vertical portion of an L-shaped water collecting joint provided with a filter, and is connected to the water collecting joint. The water is guided to the horizontal and vertical parts of the elbow connected to the horizontal water collecting pipe through the water collecting pipe, and is guided to the storage tank from the vertical water collecting pipe connected to the vertical part of the elbow.

Further, excess rainwater guided to the storage tank is guided to the drainage pipe cover via an overflow drainage pipe extending horizontally from the upper part of the storage tank to the outside of the storage tank.

Therefore, according to the conventional rainwater storage device, it is possible to overflow excess rainwater from the storage tank, so that the rainwater can be led to the storage tank without overflowing the hail and stored in the storage tank. This rainwater can be used effectively.
JP 2003-155761 A (page 2-3, FIG. 1)

However, in the conventional rainwater storage device, the structure of the pipe that guides rainwater from the dredger to the storage tank has a number of structures such as the L-shaped water collection joint, the horizontal water collection pipe, the elbow, and the vertical water collection pipe. It is necessary to pipe the pipe, and the number of parts increases. In addition, an overflow drain pipe that guides excess rainwater from the storage tank to the drain pipe cover is provided to protrude outward from the storage tank. For this reason, the conventional rainwater storage device has the disadvantages that the appearance of the appearance may be impaired by the piping, the cost increases due to the increase in the number of piping parts, and the workability may be reduced.

Accordingly, an object of the present invention is to provide a rainwater storage tank that reduces the number of piping parts, improves workability, and does not impair the appearance of the appearance due to the piping.

The rainwater storage tank according to claim 1 is provided with a rainwater storage tank main body provided with a water intake hole for taking in rainwater at the top and provided with an overflow drainage port for discharging excess rainwater at the top, and rainwater from a gutter A filter for filtering rainwater from the eaves is provided therein, and has an upper end connection part for receiving the lower end of the eaves and a lower end connection part detachably fitted in the intake eaves. A recess extending from the upper part to the lower end of the peripheral wall of the tank body, and the overflow drain port is formed on the wall surface of the recess. is formed, said overflow pipe connected to said overflow drain port is received within the recess, communicating the recess and the straight portion extending downwardly is formed the overflow drain outlet, the straight line portion And having a widened portion which extends downwardly extends in the width direction of the tank body I.

In the rainwater storage tank according to claim 1, rainwater from the dredger is guided to a rainwater storage tank body through a water intake joint provided with a filter, and an overflow pipe for discharging excess rainwater from the tank body is It is accommodated in a recess formed in the peripheral wall of the tank body.

Therefore, in order to guide rainwater from the dredger to the tank body, the rainwater from the dredge is stored in the tank body by assembling the water collecting pipe to the top of the tank body without using a number of conventional piping members. In addition, the overflow pipe does not protrude outward from the tank body. As a result, the number of piping parts can be reduced and the workability for installation of the rainwater storage tank can be improved, and the appearance of the appearance can be prevented by these pipes.
The appearance of the rainwater storage tank is enhanced.

In addition , since the overflow pipe can be freely installed in the widened portion, if the displacement of the drain port with respect to the installation position of the rainwater storage tank main body is within the widened portion of the recess, the overflow pipe does not protrude from the recess. Piping can be performed in the recess, whereby rainwater from the tank main body can be guided to the drainage port without causing the overflow pipe to protrude from the tank main body 12, and the installation position of the tank main body and the drainage port can be The deviation can be eliminated.

  Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments.

As shown in FIGS. 1 and 2, the rainwater storage tank 10 according to the present invention includes a rainwater storage tank main body 12 for storing rainwater from the eaves 11. The tank main body 12 is located on a drain pipe cover 14 (see FIG. 2) extending upward from the drain outlet in order to discharge excess rainwater supplied to the tank main body to the drain outlet 13 (see FIG. 2). Thus, it is installed on a pair of footrests 16 provided on the ground 15.

In the illustrated example, the tank body 12 is formed of a rectangular tank as a whole, and a water intake hole 17 for receiving rainwater is formed at the top thereof. The water intake hole 17 is provided with a water intake joint 18 for guiding rainwater from the ridge 11 into the tank body 12. The intake joint 18 includes a cylindrical upper end connection portion 18a that receives the lower end of the flange 11, an inclined cylinder portion 18b that is continuous with the lower end of the upper end connection portion and extends obliquely downward from the upper end connection portion, and the inclined cylinder portion. A cylindrical lower end connection portion 18c having an axis parallel to the axis of the upper end connection portion 18a and fitted into the water intake hole 17.
And an eccentric type that has a crank shape as a whole.

An annular flange portion 18 d that covers the edge of the water intake hole 17 of the tank body 12 is formed on the outer periphery of the lower end connection portion 18 c of the water intake joint 18 as shown in an enlarged view in FIG. 3. In addition, a cylindrical connection short pipe 19 that receives the flange 11 is removably screwed to the upper end connection portion 18a of the water intake joint 18 with respective screw portions 19a and 18e. A filter 20 made of a mesh for removing foreign matters such as pebbles and dead leaves from rainwater from the ridge 11 is attached to the short connecting pipe 19.

The connecting short pipe 1 is made possible without separating the connecting short pipe 19 into the upper end connecting portion 18 a of the water joint 18.
9 is formed integrally with the upper end connection portion 18a, the filter 20 can be directly incorporated in the water intake joint 18. However, the connection short pipe 19 can be removed from the water intake joint 18 as shown in the figure. By incorporating a filter inside the filter, the filter 2 of the intake joint 18
It is possible to detach the portion that accommodates 0, whereby the filter 20 can be easily cleaned.

Further, since the crank-shaped intake joint 18 is fitted in the intake hole 17 so that its lower end connection portion 18c is rotatable, the attitude of the intake joint 18 to be attached to the tank body 12 in accordance with the position of the flange 11. Can be adjusted appropriately. Further, the intake joint 18 can be easily attached to the tank body 12.
The tank body 12 can be easily cleaned by removing the water intake joint 18.

As shown in FIG. 2, a recess 21 extending from the upper part to the lower end of the tank body 12 is formed in the peripheral wall 12 a on the back surface of the tank body 12. The recess 21 is connected to the straight part 21a extending from the upper part to the lower part of the tank body 12 and the lower end of the straight part, and has a width dimension larger than the width dimension of the straight part, And a widened portion 21b reaching the edge.

4, an overflow outlet pipe 23 for discharging excess rainwater in the tank body 12 to the outside of the tank body 12 is directed downward on the upper end wall 22 of the straight portion 21a. The overflow drain port 23a is formed by the lower end thereof.

Referring to FIG. 2 again, an overflow pipe 24 is accommodated in the recess 21. The upper end of the overflow pipe 24 is connected to the discharge port 23 a of the overflow outlet pipe 23, and the lower end thereof is connected to the drain pipe cover 14. In the example shown in FIG. 2, since the tank body 12 is installed so that the overflow outlet pipe 23 substantially coincides with the drain pipe cover 14, the rainwater discharged from the overflow outlet 23 a of the overflow outlet pipe 23 is drained. A straight so-called straight pipe is employed as the overflow pipe 24 leading to the pipe cover 14.

On the other hand, depending on the installation position of the tank body 12, for example, when the drain pipe cover 14 is located at the position of one of the footrests 16, the overflow pipe 24 is recessed toward the drain pipe cover 14 as shown in FIG. A crank-shaped pipe extending from the widened portion 21b of 21 along the concave groove 16a of the leg base 16 can be employed.

In any case, since the overflow pipe 24 can be accommodated in the recess 21, the overflow pipe 24 does not protrude outward from the peripheral wall of the tank body 12.

In the rainwater storage tank 10 according to the present invention, rainwater that has fallen on the roof of the building (not shown) is collected in the eaves 11 via eaves installed along the eaves of the building, as in the prior art. This basket 1
The rainwater collected in 1 is guided to the water intake hole 17 of the tank body 12 by the water intake joint 18 and is stored in the tank body 12. At this time, since the rainwater passing through the water intake joint 18 is removed by the filter 20 provided in the connecting short pipe 19, foreign matter is prevented from entering the tank body 12, and the rainwater in the tank body 12 is removed. Can be reused in a state that does not contain

Further, if the rainwater in the tank body 12 exceeds a predetermined amount, excess rainwater is sequentially discharged from the overflow drainage port 23a through the overflow pipe 24 to the drainage port 13, so Therefore, the smooth flow of the rainwater passing through the tank is not hindered. Therefore, the rainwater can be guided to the tank main body 12 without overflowing the rainwater.

Furthermore, as described above, the rainwater from the dredger is guided to the tank body 12 through the crank-shaped intake joint 18 throughout the filter. An overflow pipe 24 for discharging excess rainwater from the tank body 12 is accommodated in a recess 21 formed in the peripheral wall 12 a of the tank body 12.

Therefore, in order to guide rainwater from the tank 11 to the tank body 12, the crank-shaped water collecting joint 18 is assembled to the top of the tank body 12 without using a number of conventional piping members. Can be stored in the tank body 12. Further, the overflow pipe 24 does not protrude from the tank body 12 to the outside. Therefore, the number of piping parts can be reduced and the workability for installing the rainwater storage tank 10 can be improved, and the appearance of the rainwater storage tank 10 can be improved without impairing the appearance of the appearance by these pipes. It is done.

Further, since the overflow pipe can be freely piped in the widened portion, if the displacement of the drain port 13 with respect to the installation position of the tank body 12 of the rainwater storage tank 10 is within the widened portion 21b of the recess 21, the overflow pipe 24 is provided. Since the rainwater in the overflow pipe 24 can be guided to the drain port 13 without protruding from the recess 21, the tank can be seen without impairing the appearance regardless of the displacement of the installation position of the tank body 12 and the drain port 13. Overflow water from the main body 12 can be discharged to the drain port 13.

It is a perspective view which shows the rainwater storage tank which concerns on this invention. It is a rear view which shows the example of piping of the rainwater storage tank which concerns on this invention. It is a perspective view which decomposes | disassembles and shows the intake joint which concerns on this invention. It is a perspective view which shows the other piping example of the drainage pipe of the rainwater storage tank which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Rain water storage tank 11 竪 樋 12 Tank main body 13 Drain outlet 14 Drain pipe cover 17 Intake hole 18 Intake joint 18a Upper end connection part 18c Lower end connection part 20 Filter 21 Recess 21a Recessed straight part 21b Recess wide part 23a Overflow Drain port 24 Overflow pipe

Claims (1)

A rainwater storage tank body provided with a water intake hole for taking in rainwater at the top and an overflow drainage port for discharging excess rainwater at the top, and the rainwater from the dredge to guide the rainwater to the water intake hole. A water intake joint provided with a filter for filtering rainwater from the gutter, and an overflow drain port. A recess extending from the upper part to the lower end is formed in the peripheral wall of the tank body, and the overflow drainage port is formed in the wall surface of the recess, and is connected to the overflow drainage port. the overflow tube is accommodated in said recess, said tank the said recess is elongated and straight portions extending downwardly said overflow drain port is formed, downwardly continuous with the straight line portion Rainwater storage tank and having a widened portion extending in the width direction of the.

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