EP2322725B1

EP2322725B1 - Drainage siphon for drain

Info

Publication number: EP2322725B1
Application number: EP10014443A
Authority: EP
Inventors: Pedro Ivars Ortiz; Gabriel Molina Nuñez-Lagos
Original assignee: Industrias Riuvert SA
Current assignee: Industrias Riuvert SA
Priority date: 2009-11-12
Filing date: 2010-11-10
Publication date: 2012-05-16
Anticipated expiration: 2030-11-10
Also published as: ZA201008085B; PT2322725E; EP2322725A1; ES1071660U8; ES1071660Y; ES1071660U

Description

The present invention relates to a drainage siphon intended to collect water coming from the overflowing of a drain and water collected by means of waterproof fabric, and to lead them to a drainage pipe. Its field of application is that of auxiliary materials for construction.
Simple drainage siphons are known consisting of a central body that extends upwards in a perimetric flange and downwards in a central tubular exit intended to be , inserted in a drainage pipe. The depth of the central body of the drainage siphon is normally sufficient for partially housing the drain inside itself, which ensures that the water can circulate.
Nevertheless, the distance between the drain and the drainage siphon can sometimes be such that it becomes necessary to incorporate an appropriate means for ducting the water between the two elements, especially water coming from the overflowing of a drain and water collected by means of the waterproof fabric. The traditional solution consists of constructing a brickwork catchpit. This is slow, expensive and not secure, as well as being subject to deterioration with time. More recently, attempts have been made to replace the catchpit by laying waterproof fabric covered with gravel, with a perforated pipe being provided to prevent the gravel from passing through. This arrangement allows the circulation of the water overflowing from a drain and the water collected by means of the waterproof fabric. This solution is more secure and longer lasting, but it compels the use of a perforated pipe.
A drainage siphon according to the preamble of claim 1 is disclosed in US 2002/136604A .
It is consequently an objective of the present invention to provide a drainage siphon capable of receiving water coming from the overflowing of a drain and that collected by means of the waterproof fabric, without using special additional elements.
In order to achieve the proposed objective, a drainage siphon has been conceived which incorporates a slotted holed housing in the interior of its central body such that this housing is able to receive a standard drainage pipe inside it, with the latter resting on at least one lug provided on the inner surface of the grooved housing.
The slotted holed housing advantageously presents the form of a circular pipe which extends the lower exit of the drainage siphon upwards.
Such a solution displays clear advantages. So:

It solves the problem created by an excessive distance between drain and drainage siphon in a way that is economical, secure and lasting.
For medium distances, it can be used without having to incorporate an additional drainage pipe between drain and drainage siphon, always provided that the height of the slotted holed housing sufficient.

In order to complement the foregoing description, and with the aim of aiding a better understanding of the characteristics of the invention, a detailed description is going to be given of a preferred embodiment, on the basis of a set of drawings attached to this descriptive specification and in which the following has been represented in an illustrative and non-limiting way.

Figure 1 shows an arrangement according to the prior art, which uses a perforated pipe.
Figure 2 shows the solution proposed in the present invention, when the height of the slotted holed housing is sufficient so that the additional use of a drainage pipe becomes unnecessary.
Figure 3 shows a cross-section in perspective of the inventive drainage siphon.
Figure 4 shows the solution proposed in the present invention, when an additional drainage pipe needs to be used.

In the above figures, the numerical references correspond to the following parts and elements

1. Perforated pipe.
2. Drain.
3. Conventional drainage siphon.
4. Gravel.
5. Drainage siphon according to the invention.
6. Slotted holed housing of the drainage siphon.
7. Exit of the drainage siphon.
8. Mouth of the drain.
9. Lug.
10. Additional pipe.
11. slots.
12. Depressed cavity.
13. Waterproof fabric.

In figure 1 a habitual arrangement in the prior art can be seen in which a perforated pipe (1) is inserted between a drain (2) and a conventional drainage siphon (3) in order to prevent the passage of gravel (4) though permitting drainage of the water collected by the waterproof fabric (13).
Figure 2, on the other hand, represents the drainage siphon (5) of the invention, which incorporates a slotted holed housing (6) basically arranged as an extension of an exit (7), and which fits on the outside of the mouth (8) of a drain (2). In this particular case the drain (2) is of the trap type, with just its base having been represented, once the habitual grating and skirting have been removed. The slotted holed housing (6) thus remains located between the mouth (8) and a depressed cavity (12).
In figure 3 a perspective view can be seen of the grooved housing (6) of the drainage siphon (5) of the invention, along with a lug (9), intended to support a hypothetical additional pipe (10), as shown in figure 4.
The functioning of the device as a whole is as follows. Most of the water evacuated via the drain (2) will circulate, either directly or via the additional pipe (10), as far as the drainage siphon (5). For its part, the water that does not reach the drain (2) will be led to a waterproof sheet (13) and, via a gravel fill (4), as far as the slotted holed housing (6) of the drainage siphon (5), given that the additional pipe (10), when Incorporated, rests on the lug (9) and does not completely cover the slots (11). See figures 2 and 4.
It will be evident to an expert in the field that there is a series of modifications and alternatives for adapting the invention to the chosen design and the means of production that are available. So, in the preferred embodiment, a single lug (9) has been represented, though a set of lugs could have been used or a perimetric step could even have been used on which the additional pipe would rest (10). Likewise, a slotted holed housing (6) has been represented in which the grooves (11) are open in their upper part in order to facilitate the stripping of the drainage siphon (5) from its mould. It is evident that the shape and arrangement of the slots (11) is irrelevant for the functionality of the invention. In the context of this document, slotted holed housing (6) will be understood as being any device with openings to permit the passage of water but not of gravel (4) through it.

Claims

Drainage siphon (5) for a drain (2), having a waterproof fabric (13) covered with gravel (4) allowing the circulation of the water overflowing from the drain (2) further comprising a slotted holed housing (6) fitted to an exit mouth (8) of the drain (2).
Drainage siphon (5) for a drain (2), according to claim 1, characterized in that the slotted holed housing (6) comprises a lug (9) so that an additional pipe (10) can rest on it.
Drainage siphon (5) for a drain (2), according to claim 1, characterized in that the slotted holed housing (6) comprises slots (11) that are open in their upper part.
Drainage siphon (5) for a drain (2), according to claim 3, characterized in that the slotted holed housing (6) presents a circular cross-section.