JP2000073414A - Water intake device for rain water storage tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intake device for a rain ater storage tank capable of supplying lear rain water by removing dust, etc., to the storage tank and having no need of maintenance because dust, etc., are not accumulated inside the device or the storage tank. SOLUTION: A water receiving container 3 having a diameter smaller than a cylinder body 2 is provided to the inside of the cylinder body 2 having a water conduit pipe joint opening 2a on the upper end, a dustproof filter 4 having an inclined upper surface 4a is mounted to the upper end opening of the water receiving container 3 and, at the same time, an intake device 1 is constituted by connecting a water supply pipe 5 to the rain water storage tank to the lower part of the water receiving container 3. By the constitution, part of rain water flowing down from a water conduit pipe 6a connected to the water conduit pipe joint opening 2a flows into the water receiving container 3 from the inclined upper surface 4a of the filter 4, it is supplyed to a water storage tank trough the water supply pipe 5, and since dust, etc., contained in rain water separated at the upper surface 4a of the filter 4 smoothly flows down along the inclined upper surface 4a of the filter together with rain water flowing down without permeating the filter 4, dust, etc., are not adhered and accumulated on the upper surface 4a of the filter.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a maintenance-free water intake device for a rainwater storage tank, which can take clean rainwater from which dust or the like has been removed into the storage tank.

[0002]

2. Description of the Related Art In an urbanized area where there are few unpaved roads and vacant spaces, rainwater falling on houses, parking lots, roads, etc. flows into rivers and the like through gutters without penetrating into the ground. A large amount of rainwater concentrates on rivers, and exceeds the capacity of rivers in a short time, causing so-called urban flooding. On the other hand, in the dry season, the water level of dams and lakes decreases, resulting in water shortages.

[0003] Under these circumstances, large and small rainwater storage tanks for temporarily storing rainwater for effective use have been developed and installed at eaves and verandas, etc., in order to prevent flooding of rivers and create a livable environment. Have been commercialized. Such a small-scale rainwater storage tank is configured to take in rainwater from a water intake device attached in the middle of a deep gutter, and a water intake device having a structure as shown in FIG. Kaihei 7-10169).

In this rainwater storage tank water intake device, a water intake container 101 is provided inside a pipe 100 that is open at the top and bottom, and a plurality of inclined water intake guide plates 102 are formed at the upper opening edge of the water container 101. A water supply pipe 103 to the rainwater storage tank is connected to the water intake container 101 by penetrating the pipe 100, and the cut upper hard gutter 104a and the lower hard gutter 1 are cut.
04b is connected to the upper and lower openings of the tubular body 100 to be connected in the middle of the hard gutter.

If such a water intake device is mounted in the middle of a gutter, when rainwater falling on the roof of a house flows down the gutter, part of the rainwater inside the pipe body 100 is drawn into the water intake guide plate 102.
Thus, the water is taken into the water intake container 101, sent to the rainwater storage tank (not shown) through the water supply pipe 103, and stored therein.

[0006]

However, in the above-mentioned water intake device, garbage adhering to the roof or eaves gutter of a house,
Insect carcasses, fallen leaves, moss, bird droppings, etc., flow down the rain gutter together with the rainwater and accumulate on the water intake guide plate 102, accumulate inside the water intake container 101, or clog the water supply pipe 103, There is a problem that it collects at the bottom of the rainwater storage tank. For this reason, it is necessary to periodically clean to remove dust and the like, and maintenance is difficult.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and an object of the present invention is to enable clean rainwater from which debris or the like has been removed to be sent to a storage tank, and the debris or the like to be collected inside the apparatus or in the rainwater storage tank. It is an object of the present invention to provide a rainwater storage tank water intake device which does not require maintenance.

[0008]

In order to achieve the above object, a rainwater storage tank water intake apparatus according to the present invention is provided with a water receiving pipe having a smaller diameter than a cylindrical body having a water pipe connection port at an upper end thereof. A container was provided below the water conduit connection port, and a dust filter having an inclined upper surface was attached to the upper end opening of the water container, and a water pipe to a rainwater storage tank was connected to a lower portion of the water container. It is characterized by the following.

[0009] When a hard gutter, for example, is connected as a water pipe to the water pipe connection port of the cylindrical body of such a water intake device, part of the rainwater flowing down the hard gutter during rainfall passes through the dust filter inside the cylindrical body. The remaining rainwater spills from the dust filter and flows down through the gap between the water receiving container and the cylindrical body and is drained. When a part of the rainwater passes through the dust filter in this way, solids such as dust contained in the rainwater are removed, and clean rainwater flows into the receiving vessel, and is sent to the rainwater storage tank through the water pipe. The problem that objects accumulate in the receiving vessel, clog the water pipe, or accumulate in the rainwater storage tank is solved at once. The solid matter separated from the rainwater on the upper surface of the dust filter is easily dropped down together with the rainwater that does not pass through the filter because the upper surface of the filter is inclined, and does not accumulate on the upper surface of the filter. Therefore, there is no need to clean the inside of the water intake device or clean the rainwater storage tank in order to remove solids such as dust, so no troublesome maintenance is required, and clean rainwater stored in the rainwater storage tank is eliminated. It can be used effectively. Also, since this water intake device has a simple structure and can be manufactured at low cost,
There are also economic benefits.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings.

FIG. 1 is an explanatory view showing a use state of a water intake device for a rainwater storage tank according to the present invention, and FIG. 2 is an enlarged sectional view of the water intake device.

The rainwater storage tank intake device 1 includes a tubular body 2 having a water pipe connection port 2a and a drain pipe connection port 2b at an upper end and a lower end, and a water receiving container 3 provided inside the cylindrical body 2. And a dust filter 4 attached to the upper end opening of the water receiving container 3 and a water supply pipe 5 to a rainwater storage tank connected to a lower part of the water receiving container 3 and cut off. The upper hard gutter 6a is connected as a water pipe to the water pipe connection port 2a at the upper end of the cylinder 2, and the lower hard gutter 6b is connected as a drain pipe to the water pipe connection port 2b at the lower end of the cylinder 2. Therefore, it is installed in the middle of the hard gutter.

The cylindrical body 2, the water receiving container 3, and the water pipe 5 are all made of a synthetic resin such as polyvinyl chloride, and the cylindrical body 2 is formed into a cylindrical shape having a larger diameter than the hard gutters 6a and 6b. . The water receiving container 3 is formed into a circular container having a smaller diameter than the cylindrical body 2 and is disposed concentrically below the water pipe connection port 2a at the upper end of the cylindrical body. Gap 7 between
Exists. The bottom of the water receiving container 3 is formed in a funnel shape, and a water supply pipe 5 is connected via an elbow 8 to a connection port 3a at the center of the bottom. The water pipe 5 penetrates the side wall of the cylindrical body 2 and is connected to the rainwater storage tank 9.

The dust filter 4 attached to the upper end opening of the water receiving container 3 is composed of a ring 4a and a net 4b, and is detached by fitting the ring 4a into the upper end opening of the water receiving container 3. Installed interchangeably. The upper end of the ring body 4a is cut diagonally, and a net 4b is attached so as to cover the opening at the upper end of the ring body cut diagonally. Therefore, this dust filter 4
In the above, the mesh 4b constituting the upper surface of the filter is inclined.

As the mesh 4b, a mesh having a fine mesh of about 20 to 120 mesh is preferable. If a mesh having a mesh size larger than 20 mesh is used, it is difficult to separate and remove small solids contained in rainwater, and the mesh size is smaller than 120 mesh. When a net is used, it is difficult to take in a sufficient amount of rainwater because the amount of water permeation decreases. It should be noted that a net having a coarser mesh than the above may be stacked in two or three layers and adhered so as to have a fineness of about 50 to 100 mesh as a whole.

It is preferable that the inclination angle of the upper surface (net body 4b) of the filter 4 is set to 20 to 60 °, and if the inclination angle is smaller than 20 °, the solid matter separated from the rainwater on the upper surface of the filter 4 However, it is difficult to smoothly flow down along with the rainwater that does not pass through the filter 4, and there is a risk that the rainwater adheres and accumulates on the upper surface of the filter 4.
On the other hand, when the inclination angle is larger than 60 °, most of the rainwater flowing down from the deep gutter 6a bounces laterally on the upper surface of the filter 4, and it becomes difficult for the rainwater to pass through the filter 4, so that a sufficient amount of rainwater is taken in. Becomes difficult.

In the rainwater storage tank intake device 1 having the above-described structure, as described above, the cut upper hard gutter 6a is inserted into the water pipe connection port 2a at the upper end of the cylindrical body 2 and is connected thereto. By connecting the hard gutter 6b to the drain pipe connection port 2b at the lower end of the cylindrical body 2, the gutter 6 is attached in the middle of the hard gutter 6 as shown in FIG.

When the water intake device 1 is attached in this way, the roof 10 passes through the eaves gutter 11 and the call gutter 12 during rainfall, and the hard gutter 6
Part of the rainwater flowing down (the upper hard gutter 6a) passes through the trash filter 4 and flows into the water receiving container 3, and the remaining rainwater spills out of the trash filter 4 to receive the water.
Then, the water flows down the lower hard gutter 6b through the gap 7 between the cylinder body 2 and the water. When a part of the rainwater passes through the dust filter 4 as described above, solids such as dust contained in the rainwater are removed, and clean rainwater flows into the water receiving container 3 and the water pipe 5
The solid matter is sent to the rainwater storage tank 9 through the tank, so that there is no need to worry about solids accumulating in the water receiving container 3, clogging the water pipe 5, and collecting in the rainwater storage tank 9. The solid matter separated from the rainwater on the upper surface (net 4b) of the dust removal filter 4 has the upper surface (net 4b) of the filter 4 in the range of 20 to 60.
°, it easily flows down with the rainwater that does not pass through the filter 4 and flows down, and is discharged from the lower hard gutter 6 b through the gap 7. 4b) is not deposited. Therefore, there is no need to clean the inside of the water intake device 1 or to clean the rainwater storage tank 9 to remove solids.
No troublesome maintenance is required, and the clean rainwater stored in the rainwater storage tank 9 can be effectively used as, for example, water for plant irrigation or water for car washing.

The rainwater containing the solid portion discharged from the lower hard gutter 6b flows through the underground drainage pipe 13 and passes through the rainwater basin 14
The solid matter is settled and removed in the rainwater basin 14 and drained from the drain pipe 15.

In the water intake device 1 of this embodiment, the filter 4 with the net 4b attached to the obliquely cut upper end opening of the ring 4a is used as the dust filter 4, but is not limited thereto. Instead, for example, a dust-removing filter made of open-celled body (sponge or the like) having good permeability and having an inclined upper surface, or a woven cloth or a nonwoven cloth with a coarse texture is attached to the obliquely cut upper end opening of the ring body 4a. A worn dust filter or the like may be used.

In this embodiment, the water receiving container 3 to which the dust filter 4 is attached is provided concentrically below the water pipe connection port 2a, but the water receiving container 3 to which the filter 4 is attached is provided. The position of the container 3 may be eccentric to the side (right side in FIG. 2) opposite to the direction in which the rainwater or solids flow down along the inclined upper surface 4a of the filter 4. Gap 7 on the side where the flow falls
This has the advantage that rainwater and solid matter flow down and drain through the gap 7 more smoothly.

Further, in this embodiment, a synthetic resin pipe is used as the water supply pipe 5, but a flexible rubber hose or the like may be used. Further, in this embodiment, the water intake device 1 is installed in the middle of the hard gutter 6, but a new water conduit may be provided from an eaves gutter or the like and attached to the water conduit.

[0023]

As is apparent from the above description, the rainwater storage tank water intake apparatus of the present invention can remove solid matter such as dust and take in clean rainwater into the storage tank.
Since solids do not accumulate on the top of the filter or accumulate in the rainwater storage tank, no cumbersome maintenance such as cleaning to remove the solids is required, and the structure is simple and can be manufactured at low cost. It has many remarkable effects.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing a use state of a rainwater storage tank water intake device according to the present invention.

FIG. 2 is an enlarged sectional view of the water intake device.

FIG. 3 is an enlarged sectional view of a conventional water intake device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Intake apparatus for rainwater storage tanks 2 Cylindrical body 2a Water pipe connection port 2b Drain pipe connection port 3 Water receiving container 4 Dust filter 4a Ring body 4b Upper surface net 5 Water pipe 6 Hard gutter 6a Cut upper hard gutter 6b Cut lower hard gutter 7 Gap between water receiving container and cylinder 8 Elbow 9 Rainwater storage tank 10 Roof 11 eave gutter 12 call gutter

Claims (1)

[Claims] A water receiving container having a smaller diameter than the cylindrical body is provided inside a cylindrical body having a water guiding pipe connection port at an upper end, and is provided at an upper end opening of the water receiving vessel. A rainwater storage tank intake device comprising a dust filter having an inclined upper surface, and a water pipe connected to a rainwater storage tank connected to a lower portion of the water receiving container.