JP2022142083A - Strainer with overflow pipe - Google Patents

Abstract

To provide a strainer with an overflow pipe preventing rise of the water level of the flat-roof of a rooftop or a veranda, even when a drainage port provided to the flat-roof of the rooftop and the veranda is clogged.SOLUTION: A strainer 1 with an overflow pipe has a strainer 10 installed at a drainage port 41 communicated with a gutter 30 and closing the drainage port 41 allowing water flow, and the overflow pipe 20 mounted to the strainer 10, with a draining side end part 22 inserted to the gutter 30 side from the drainage port 41, in a state of the strainer 10 installed to the drainage port 41.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a strainer with an overflow pipe installed on a flat roof on a roof or on a drain outlet of a veranda.

In general, a grid-like filter called a strainer is installed in the flat roof of the roof or in the drain port of the veranda to prevent clogging with mud, dead leaves, garbage, and the like.

If the strainer and the drain port are clogged and a large amount of rain falls on the floor of the flat roof or veranda, the water level on the floor rises because the drainage from the drain port cannot catch up. As a result, there is a problem that rainwater flows into the building from the lower part of the entrance door or sash of the building installed on the same floor.

In order to solve such problems, Patent Document 1 discloses that an overflow pipe is provided in the strut of the strainer to communicate the upper space and the inner space of the strainer so that when there is a large amount of rain, , to discharge the water above the strainer.

JP 2011-144573 A

However, if the overflow pipe communicates the space above the filter member with the internal space, there is a problem that if the drain port is clogged, the water in the space above the filter member cannot flow into the drain pipe. rice field.

To provide a strainer with an overflow pipe capable of preventing the water level on the floor surface of a flat roof or a veranda from rising even if a drainage port provided on the flat roof or the veranda is clogged. for the purpose.
Another object of the present invention is to provide a strainer with an overflow pipe that prevents clogging of a drain port with mud or the like.

In order to solve the above problems,
The strainer with overflow pipe of the present invention is
a strainer installed in a drain port leading to a drain pipe and blocking the drain port so as to allow water to pass therethrough;
and an overflow pipe that is attached to the strainer and whose discharge-side end is inserted from the drain port toward the drain pipe when the strainer is installed in the drain port.

According to this feature, even if the drain port is clogged and the flow of water directly from the strainer to the drain port becomes poor, when the water level rises to the height of the overflow pipe, the water flows into the overflow pipe and flows into the discharge side end. Since the water is discharged from the outlet into the drain pipe, it is possible to always ensure a channel that is not blocked by mud or the like, and it is possible to prevent the water level from rising above the height of the overflow pipe.

In the above invention,
In a state where the strainer is installed in the drain port, the discharge side end is inserted into the drain pipe by about 50 mm from the drain port.

According to this feature, by inserting the discharge side end into the drain pipe side from the drain port by about 50 mm, the flow path between the overflow pipe and the drain pipe can be secured and the ventilation function can be secured. It is possible to reliably flow water from the discharge side end to the drain pipe.

In the above invention,
In a state where the strainer is installed at the drain port, the inflow side end of the overflow pipe has a height equal to or higher than the upper end of the strainer.

According to this feature,
Even if the strainer is totally clogged and the flow of water is impaired, the inflow of water from the inflow side end of the overflow pipe into the overflow pipe can be ensured.

FIG. 2 is an end elevational view of a vertical cross section schematically showing a state in which the strainer with an overflow pipe according to the embodiment of the present invention is installed in a drain port; It is a longitudinal cross-sectional part end view which shows typically the state which installed the strainer with an overflow pipe which concerns on a modification in the drain port. It is a longitudinal cross-sectional part end view which shows typically the state which installed the strainer with an overflow pipe which concerns on another modification to the drain port. It is a longitudinal cross-sectional part end view which shows typically the state which installed the strainer with an overflow pipe which concerns on another modification to the drain port.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a vertical sectional end view schematically showing a state in which a strainer 1 with an overflow pipe according to an embodiment of the present invention is installed in a drain port 41 of a drain 40. FIG. In the present embodiment, the drain 40 is a tubular member, and is inserted through a hole 60 penetrating vertically provided in the flat roof of the roof or the floor surface 50 of the veranda. The drain 40 drains rainwater and the like falling on the floor surface 50 below the hole 60 . Below the hole 60, a gutter 30, which is a drain pipe having a diameter one turn larger than that of the drain 40, is arranged. A drain port 41 that is the upper end of the drain 40 and serves as an inlet for rainwater communicates with the gutter 30 . That is, the rainwater that has flowed from the drain port 41 of the drain 4 flows into the gutter 30 from the lower end 42 of the drain 40, passes through the gutter 30, and is discharged to the outside from the lower end (not shown) of the gutter 30.

A strainer 1 with an overflow pipe includes a bowl-shaped strainer 10 and an overflow pipe 20 attached to the strainer 10 .

The strainer 10 is installed in the shape of an inverted bowl at the drain port 41 of the drain 40 and closes the drain port 31 so that water can flow through it. A large number of water passage openings (not shown) are formed in the side surface of the strainer 10 at appropriate intervals in the circumferential direction.

The overflow pipe 20 is a tubular member with a diameter smaller than that of the drain 40 . The diameter ratio between the overflow pipe 20 and the drain 40 is approximately 3:5. The overflow pipe 20 extends vertically when the strainer 10 is installed in the drain port 41 .

When the strainer 10 is installed at the drain port 41 , the rainwater inflow side end 21 that is the upper end of the overflow pipe 20 has substantially the same height as the upper end 11 of the strainer 10 . As a result, even if the strainer 10 is clogged as a whole and the flow of water deteriorates, the water can surely flow into the overflow pipe 20 from the inflow side end 21 of the overflow pipe 20.例文帳に追加

In addition, in a state in which the strainer 10 is installed in the drain port 41 , the inflow-side end 21 of the overflow pipe 20 is attached to the upper end of the strainer 10 so that the inflow-side end 21 of the overflow pipe 20 is exposed from the upper end 11 of the strainer 10 . It may be higher than 11.

The height of the inflow side end 21 of the overflow pipe 20 is determined according to the position of the doors and sashes provided on the floor surface 50 and how much rainwater is allowed to accumulate on the flat roof and veranda. . The height of the inflow side end 21 of the overflow pipe 20 may be adjusted according to the allowable height.

A discharge side end portion 22 that is the lower end of the overflow pipe 20 is inserted by a distance D from the position of the drain port 41 to the gutter 30 side in a state where the strainer 10 is installed in the drain port 41 . The distance D is preferably about 50 mm in order to properly secure the communication function and ventilation function. In this embodiment, the height of the drain port 41 is the same as the height of the floor surface 50 and the lower end of the strainer 10, and the discharge side end 22 is inserted into the gutter 30 to a position lower than the height by a distance D. .

As a result, even if the drain port 41 is clogged, the discharge-side end 22 of the overflow pipe 20 is inserted into the gutter 30 to a position lower than the height of the drain port 41 by the distance D, so that the discharge-side end remains closed. The portion 22 and the gutter 30 can always be kept in communication. Therefore, water can reliably flow from the inflow side end 21 of the overflow pipe 20 to the discharge side end 22 , and further from the discharge side end 22 to the gutter 30 .

In addition, since the overflow pipe 20 allows communication between the external space above the inflow side end 21 of the overflow pipe 20 and the space inside the gutter 30, the periphery of the drain port 41 serving as the inlet of the gutter 30 is covered with mud or the like. Even if it is broken, the air in the gutter 30 is ventilated to the outside through the overflow pipe 20, so that the inflow of water into the gutter 31 is not hindered.

As described above, by installing the strainer 1 with an overflow pipe configured as described above at the drain port 41, even if the drain port 41 is clogged with mud or the like and the flow of water directly from the strainer 10 to the drain port 41 is impaired, , when the water level rises to the height of the inflow end 21 of the overflow pipe 20, the water flows from the inflow end 21 of the overflow pipe 20 through the discharge end 22 into the gutter 30, and is clogged with mud or the like. It is possible to prevent the water level from rising above the height of the inflow side end portion 21 of the overflow pipe 20. As shown in FIG. Therefore, it is possible to prevent water from entering the room from the lower part of the door or sash of the building installed on the floor surface 50 .

Further, by inserting the overflow pipe 20 into the drain port 41 to reduce the effective cross-sectional area of the drain port 41, the flow speed can be increased and mud clogging can be prevented.

The above-described embodiment is merely an example, and the present invention can be modified in various ways within the scope of the invention described in the claims.

For example, the strainer with an overflow pipe can be installed not only in the drain port 41 provided in the floor surface 50 but also in the drain port provided in the wall surface.

FIG. 2 is a vertical sectional end view schematically showing a state in which the strainer 1a with an overflow pipe is installed in a drain port 41a provided on a wall surface 70 of a building.

A wall surface 70 of the building is provided with a hole 60a passing through the wall surface 70 in a horizontal direction, and a gutter 30a is inserted into the hole 60a. The gutter 30a has a substantially L-shaped vertical cross section, extends horizontally in the hole 60a from the side of the drain port 41a to the outside of the wall surface 70, curves downward outside the wall surface 70, and extends into the curved portion. extends downward along the wall surface 70 from the .

The drain 40a has a substantially L-shaped longitudinal section with a diameter one turn smaller than that of the gutter 30a, is inserted into the gutter 30a, and is arranged along the shape of the gutter 30a. Rainwater falling on the floor surface 50 of the building is guided from the outlet port 41a side of the drain 40a to the lower end 42a, and discharged from the lower end 42a of the drain 40a into the gutter 30a.

The overflow pipe 20a has a substantially L-shaped longitudinal section, and when the strainer 10a is installed in the drain port 41a, the overflow pipe 20a has a vertical portion 23a extending downward from the inflow side end portion 21a to the position of the drain port 41a. , and a horizontal portion 24a that bends at a right angle at the position of the drain port 41a and extends horizontally from the position of the drain port 41a toward the gutter 30a. In this modification, the horizontal portion 24a has a length of a distance D, and when the strainer 10a is installed in the drain port 41a, the discharge side end portion 22a extends from the drain port 41a by a distance D (horizontal portion 24a) is inserted into the gutter 30a side.

Since the strainer 1a with an overflow pipe according to the modification has the above configuration, even if the drain port 41a is clogged with mud or the like and the flow of water directly from the strainer 10a to the drain port 41a is impaired, the inflow side of the overflow pipe 20a When the water level rises to the height of end 21a, water flows from inlet end 21a of overflow pipe 20a through outlet end 22a to gutter 30a. In this way, by always ensuring a flow path that is not blocked by mud or the like, it is possible to prevent the water level from rising above the height of the inflow side end 21a of the overflow pipe 20a.

In the above-described embodiment, the case where the strainer 1 with an overflow pipe is installed in the outlet 41 of the drain 40 provided in the hole 60 of the floor surface 50 has been described. , the drain 40 may not be provided, and a similar effect is produced in this case as well. In this case, as shown in FIG. 3 , the “drain port 41 ” where the strainer 1 with overflow pipe is installed is the end of the hole 60 on the side of the floor surface 50 .
Similarly, in the modification described above, the case where the strainer 1a with an overflow pipe is installed in the outlet 41a of the drain 40a provided in the hole 60a of the wall surface 70 of the building has been described. The drain 40a may not be provided in the hole 60a, and the same effect is produced in this case as well. In this case, as shown in FIG. 4, the "drain port 41a" in which the strainer 1a with an overflow pipe is installed is the building-side end of the hole 60a.

1, 1a strainers with overflow pipes 10, 10a strainers 20, 20a overflow pipes 21, 21a inflow side ends 22, 22a discharge side ends 30, 30a troughs 40, 40a drains 41, 41a drain ports 42, 42a lower ends 50, 50a Floor surfaces 60, 60a Hole 70 Wall surface

Claims (3)

a strainer installed in a drain port leading to a drain pipe and blocking the drain port so as to allow water to pass therethrough;
an overflow pipe that is attached to the strainer and whose discharge side end is inserted from the drain port to the drain pipe side in a state where the strainer is installed in the drain port. strainer. 2. The strainer with an overflow pipe according to claim 1, wherein, when said strainer is installed in said drain port, said discharge side end is inserted into said drain pipe by approximately 50 mm from said drain port. . 3. The strainer with an overflow pipe according to claim 1, wherein the inflow side end of the overflow pipe has a height equal to or higher than the upper end of the strainer when the strainer is installed at the drain port. .

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