DEVICE DRAIN PAVEMENT

The present invention relates to a road gully.

The gully top devices consist of pieces are connected to the system of buried and surface water in urban areas, and their role is to channel the water collected by the gulleys.

The gully known devices are generally a limited flow rate, the more if they have a filter system, and high inflow of water, they cannot remove it sufficiently quickly.

Currently, the frequency of heavy rain and abrupt tends to increase, and the networks leads on many common fall under sized, leading to frequent water damage.

There are already known devices drain plastic formed in one piece, in particular by the document FR's 2,966 849. The device includes a conduit drain vertical main, sealed at the base and having a central region in side exhaust stack whose connection is made using a siphon.

However, such a device drain, formed from an simplification, since it is substantially cylindrical in shape, has the drawback of being less effective, particularly during precipitation greater than normal. Furthermore, its design requires by trench of great depth.

The present invention aims to provide a device gully top, but without the disadvantages mentioned, by allowing when there is a large flow rate, it is to say during heavy rainfall, storm for example, provide a storage point.

The device drain according to the invention is constructed of plastic, it comprises at its upper part a vertical conduit for connection to a system for collection of water, and is characterized in that it comprises inferiorly on a same level on the one hand a lateral duct outlet, and a reservoir of large capacity disposed perpendicularly to said vertical pipe, open at said right lateral conduit, the bottom of which there rises, partially facing said side conduit, overflow-forming a bottom wall, while the opening communication between said reservoir and said lateral conduit, beyond said bottom wall, is closed by a plate which has three distinct superposed zones, a first zone lower apertured extending opposite said end wall, a second intermediate zone that is solid, and a third apertured upper region.

The lower region of the gate plate is a thin mesh which permits evacuation and filtering the water from the overflow at a determined flow rate, and which functions to limit the amount of standing water. The intermediate zone allows full retention of water in the tank during precipitation, water being discharged from the lower region, whereas the upper zone consists of a grate which can be less fine than that of the lower region, and increase the venting area and hence the flow rate, for discharging an excess of water in the event of a large rainfall.

The drain device of the invention thus permits of channeling a water overload point, which enhance the discharge flow rate, especially in adapting it as needed.

An additional feature of the device drain according to the invention, the wafer is removably mounted through the means are adapted to allow extraction by the vertical conduit.

In another additional feature of the device drain according to the invention, it comprises at the opening communication between the reservoir and the conduit side, two lateral guides in which the plate is slidably mounted.

In another additional feature of the device drain according to the invention, the plate is inclined relative to the vertical, its lower portion being offset from the lateral side of the conduit.

The angle of the plate is chosen so that at will by lowering the water level in the reservoir, the water comes to lick the grids and liberated from larger impurities, the face of the plate receiving the impurities being overhang.

In another additional feature of the device drain according to the invention, its bottom, located below the vertical conduit, has a generally pyramidal, namely that it is wider at the bottom than at the top.

Thus, the bottom of the device drain laterally according to the invention has a slope that is intended to facilitate the compaction of the earth all around, and above all to avoid retentions and collapse as encountered when it has an outlet at half height, as is the case in the document FR's 2,966 849.

The advantages and features of the device drain according to the invention, shall become apparent from the description which follows and which refers to the attached drawing, in which represents a non-limiting embodiment.

In the attached drawing:

figure 1 represents a perspective view of a drain device according to the invention.

figure 2 represents a perspective view with partial cut from the same drain.

figure 3 represents a view in elevation and in section of the same device middle drain.

figure 4 represents a schematic view in elevation of a portion of the same drain device.

With reference to these drawings, it may be seen that a drain device includes is top, a vertical conduit 1 for connection to a network of rainwater to flow, to a floor drain.

This vertical conduit 1 has a ringed structure to facilitate a cut at proper height dimensions, and to allow perfect anchoring in the ground.

The device drain comprises in its lower portion, on a same level, on the one hand reservoir compartment 2, and a horizontal duct outlet 3, the tank 2 being disposed in line with the vertical conduit 1.

The tank 2 and the exhaust duct 3, and more particularly the proximal end 30 of the latter communicate through an opening 20, the proximal end 30 having a profile that flares from the conduit 3 toward the opening 20.

It should be noted that the distal end 31 of the discharge duct 3 is guilty and made of a juxtaposition of cylindrical elements of different diameters for the selection of that which is adapted to be connected to the waste pipe.

In addition, the bottom 21 of the reservoir 2 rises at the opening 20, on a reduced height, a wall 22 designed to constitute an overflow.

Finally, the opening 20 is closed by a removable plate 4, which completely enclose the proximal portion 30 of the exhaust duct 3. the plate 4 is slidably mounted between two side rails 32 only one of which is visible in Figures 2 and 3. the side guides 32 are inclined relative to the vertical, it is to say that their lower ends are shifted toward the exhaust duct 3 relative to their upper ends, while leaving a space if the plate 4 is also inclined. It should be noted that, as is visible in Figure 3, the tilt angle enables that the plate 4, which is of a width smaller than the inner diameter of the vertical pipe 1, can be removed from the drain by the conduit 1.

It should be noted that the lower end of the plate 4 is positioned in the exhaust duct 3 beyond the wall 22 at a short distance therefrom.

With reference also to Figure 4 which represents a plate 4, we can see that this plate 4 has three areas namely:

- a lower region 40 which is made of a fine mesh grid, even very thin to limit or at least control the rate, which extends over a height lower than that of the wall 22,

an intermediate zone - 41, full,

- an upper region 42 which is made of a mesh screen same as or larger than that of the lower region 40.

In normal operation, the water enters the drain through the vertical conduit 1, to pour into the tank 2. when the water rises in the tank 2, and projects above the level of the wall 22, it pours on the other side of the wall 22 and so into the outlet duct through the plate 4 by the fine mesh grid 40 of the area, at a rate determined by the size of area 40 and the choice of the mesh.

If the water rises more rapidly through the tank 2, the full area of the plate 4 41 contains the boost, which continues to be evacuated at the same selected flow rate.

However in the case of an exceptional influx of water, the surplus passes through the upper region 42 of the plate 4, thereby increasing the flow rate and discharge excess water, to return to normal.