FR2811691A1 - Separator for solid materials from effluent has spillway and supporting frames for removable mesh baskets - Google Patents

Abstract

The solid separator consists of a spillway (1) which directs the flow to a downstream zone (3) with a parapet (13), deflector plates (12) and supporting frames for removable mesh baskets. Each basket has a rounded U-shaped base and an upper rim with handles to facilitate removal for emptying.

Description

The present invention relates to a device for separating

  solid materials conveyed by an effluent of used and / or rainwater in the drainage installations collecting these waters with a view to bringing them to the purification installations. In general, wastewater and rainwater are discharged to treatment facilities through simple pipes, so that in case of heavy rain and storms, the flow of water contained in these pipes becomes much greater than '' in dry weather, and cannot be

  treated in treatment plants.

  To solve this problem, overflow or overflow devices are known which make it possible to avoid any overload.

  hydraulics of these sanitation systems under such conditions.

  These weirs are generally placed at strategic locations on the water collection network and thus protect the installations by

  discharging the overflow to nearby streams or rivers.

  These devices are for the most part simple structures which allow the solid materials conveyed by the wastewater and / or rainwater to leave the network with the overflowing flow. Thus, they frequently dump sewage and other household garbage into waterways. These pollutants are unfortunately harmful to the surrounding flora and fauna and affect the appearance of streams and rivers, often causing

public complaints.

  To overcome this problem, there are weirs which have dam plates so as to prevent solid materials from being discharged into watercourses. However, these systems are not

  designed to meet current standards.

  There are also known different types of grids and filter bags made for this purpose and arranged at the weir to collect and contain the solid materials and prevent their entrainment in the drainage networks. Unfortunately, these devices have many drawbacks: for example, such bags tend to break, to slow the overflow flow when they are full, their lifespan is

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  often short and their weight, when filled, is generally too large to allow handling by one person. As regards the grids, these pose hydraulic problems, also present maintenance problems when placed in confined spaces and are often expensive to produce. The present invention therefore aims to overcome these drawbacks by proposing a weir device making it possible to minimize pollution of watercourses without affecting the hydraulic performance of the drainage installation, the maintenance of this device being able to be carried out by a single

person.

  To this end, the device according to the invention making it possible to separate solid materials conveyed by an effluent from wastewater and / or rainwater comprising an upstream zone into which said effluent to be treated opens out, and which is discharged by overflow, by the intermediate of a weir, towards a downstream zone, said device is characterized in that it comprises at least one removable basket provided with a sieve which is positioned in at least one frame disposed on said weir between said upstream zone and said zone

  downstream, said solid matter being collected in said basket.

  Other features and advantages of the present invention

  will emerge from the description given below, with reference to the drawings

  attached which illustrate an exemplary embodiment devoid of any limiting character. In the figures: - Figure 1 is a partial perspective view of the device according to the invention mounted on the weir of a drainage installation; - Figure 2 is a perspective view of the removable basket of the device according to the invention; - Figures 3a to 3c are perspective views of three variants

  frame of the device according to the invention.

  If we refer to Figure 1 which partially represents a drainage installation, we see that an effluent of wastewater and / or rain from an upstream area arrives at a weir 1 by flowing into a conduit 2 in the direction of arrow F. This conduit 2 is generally in the form of a half-cylinder, one of the edges of this

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  the latter playing the role of weir 1. Thus, in the event of heavy precipitation, the flow of excess wastewater and / or rainwater crosses the weir 1 and overflows, downstream of the latter, in a discharge pipe 3 ( or downstream area), itself opening for example into a nearby stream or river. In addition, between the weir 1 and said excess effluent discharge conduit, is arranged at least one device according to the invention (in FIG. 1, three in number) making it possible to separate the solid materials conveyed

  by said effluent when the latter crosses the weir.

  Of course, this device, which is in the form of modules arranged one beside the other, can be adapted to any type of weir by varying the number of modules, in particular along the width of said weir. Referring now to Figures 2 and 3a to 3c, we see that this device is essentially composed of a removable basket 4 (Figure 2) and a frame 5 supporting the latter (Figures 3a to 3c), said basket for collect the solid matter which is likely to pollute the watercourse or the river into which the drain pipe 3 opens. To do this, said removable basket includes a screen 6 which retains said solid materials and

  authorizes the passage of overflow water.

  According to an advantageous characteristic of the invention (see Figure 2), the screen 6 of said removable basket has a rounded base 7 and a flange 8 on which are fixed two lateral handles 9 so as to facilitate the

  removal and cleaning of said basket.

  According to another advantageous characteristic of the invention, said rounded base of the screen 6 has a U-shape so as to facilitate the emptying of said basket. Indeed, the absence of recesses at the level of the base 7 of the sieve 6 prevents the solid materials from remaining blocked at the bottom thereof.

  when a person comes to empty said basket.

  In addition, the frame 5 on which the removable basket 4 is positioned is made so as to be able to support the weight of a man, and said basket is dimensioned so that it can be removed, even when it is full, by a single person. . Indeed, the dimensions of each module must be

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  in accordance with current regulations (removal of the removable basket

by one person).

  According to yet another advantageous characteristic of the invention, the frame 5 comprises a frame 10 for supporting the basket 4 and at least one lug 11 projecting allowing the fixing of said frame on the weir 1. Preferably (cf. FIG. 3a to 3c ), said frame has four legs thus ensuring a

  good fixation on said weir.

  According to yet another advantageous characteristic of the invention, said frame also comprises at least one deflector plate 12 making it possible to direct said effluent coming from the upstream zone towards said removable basket. This plate, which forms a right or obtuse angle with the direction F of flow of the effluent (clockwise), has the advantage of deviating

  the flow overflowing and thus concentrating the solid materials towards said basket.

  According to yet another advantageous characteristic of the invention, said frame comprises at least one parapet plate 13 making it possible to avoid a

  overflow of said effluent outside said basket.

  This last advantageous characteristic represented in FIGS. 3b and 3c, is essentially intended to equip the modules arranged at each end of the weir 1, in particular when the length

  of it does not allow to receive a whole number of modules.

  The present invention as described above offers many advantages in particular, it provides an economical solid material separation device, adaptable to any size of weir without affecting the hydraulic performance of the installation of

  drainage, and which can be emptied and cleaned by one person.

  It remains of course that the present invention is not limited to the embodiments described and shown above, but that it

includes all variants.

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Claims (5)

  1 - Device for separating solid materials conveyed by an effluent from wastewater and / or rainwater comprising an upstream zone into which said effluent to be treated opens out, and which is discharged by overflow, via a weir (1 ), towards a downstream area (3), said device being characterized in that it comprises at least one removable basket (4) provided with a screen (6) positioned in at least one frame (5) disposed on said weir between said upstream zone and said zone   downstream, said solid matter being collected in said basket.   2 - Device according to claim 1, characterized in that said removable basket comprises a screen (6) having a rounded base (7) and a flange on which are fixed two side handles (9) so as to   facilitate the removal and cleaning of said basket.   3 - Device according to claim 2, characterized in that said rounded base of said screen is U-shaped so as to facilitate emptying said basket.   4 - Device according to any one of the preceding claims,   characterized in that the frame (5) comprises a frame (10) for supporting said removable basket and at least one protruding tab (11) allowing the attachment of said frame.   - Device according to any one of the preceding claims,   characterized in that the frame (5) comprises at least one deflector plate (12) making it possible to direct the effluent coming from the upstream zone (1) in direction of said removable basket.   6 - Device according to any one of the preceding claims,   characterized in that the frame (5) comprises at least one parapet plate (13) making it possible to avoid an overflow of said effluent outside the basket removable (4).