EP4043656A1 - Filter system for a side wall of an enclosure for collecting water such as a gutter - Google Patents

Abstract

Filter system (1) intended to equip a side wall of a water collection enclosure such as a well or a pit through which a drainage pipe emerges, said filter system being configured to filter the water from the collection enclosure flowing into the drainage pipe, the filter system comprising:- a filter holder (2) comprising a first frame (20) intended to be fixed to the side wall of the well, - a filter (3) comprising a second frame (30), and a filter means (31) held by the second frame (30), - fixing means between the filter (3) and the filter holder (2) comprising lugs (4) carried by the second frame (30) projecting outwards from two uprights of the second frame (30), and slots (5) integral with the first frame (20), receiving the lugs ( 4) removable.

Description

The present disclosure relates to a filter system, as well as a manhole equipped with such a filter system.

Technical area

The present disclosure relates to the field of rainwater filtration, and more particularly to filter systems fitted to manholes. It is thus known to equip the collection enclosure of a manhole with a filter system, fixed to the side wall of the enclosure, in line with a mouth of a drainage pipe.

The filter system makes it possible to ensure a first filtration of rainwater, by retaining in the collection enclosure the materials retained by the filtering means, and so that only the water filtered by the filtering means flows into the pipe. drainage.

The filter system usually comprises a filter holder, comprising a first frame fixed to the side wall of the collection enclosure, and a filter comprising a second frame and a filter means retained by this second frame.

The filter holder is permanently attached to the side wall of the manhole, while the filter is typically a cleanable stainless steel grid, removably fixed to the filter holder, and which must be changed easily and quickly, periodically, when the filter medium becomes clogged.

Prior technique

According to a first known state of the art, it is known to equip the uprights of the first frame with two slide sections and a bottom stop. The second frame of the filter is then fixed, by inserting its two uprights respectively in the two slides, and until the bottom crosspiece comes into contact with the bottom stop.

At maturity, and when the filter must be changed, it is simply lifted to make it slide, and until it is extracted, which however requires a sliding stroke, substantially equal to the height of the filter, before being able to extract the filter. In some wells of reduced volume, this clearance is not available, and this then prevents the filter from being removed in the axis of the manhole.

It is still known to the present inventor of the document FR.2916.458 A1 , a filter system whose removable fastening means comprise two pairs of studs (or lugs), with a first pair of lugs, in the lower part of the uprights of the second frame of the filter, and a second pair of lugs, in part high of the uprights of the frame, and which are intended to cooperate with four open lugs, namely respectively with a first pair of projecting open lugs in the upper part of the first frame and a second pair of projecting open lugs in the lower part of the second frame .

According to this teaching, the filter can be extracted from the filter holder, by releasing the lugs from the ears, and according to an extraction stroke much lower than the height dimension of the filter. Such a filter system can be mounted in a manhole, even when compact enclosure.

Conversely, the installation of the filter on the filter holder requires the matching of the four lugs of the filter, simultaneously with the four ears of the filter holder, this operation being typically carried out remotely by the operator at the using a pole illustrated in the first figure of the document FR.2916.458 A1 .

According to the findings of the inventor, the installation of the filter on the filter holder may require a certain dexterity for the operator, in particular when the pole is used, and in particular to simultaneously position the four lugs of the filter in correspondence with the four open ears of the filter holder.

Summary

This disclosure improves the situation.

• un porte-filtre comprenant un premier cadre destiné à être fixé à la paroi latérale du puit,
• un filtre comprenant un deuxième cadre, et un moyen filtrant maintenu par le deuxième cadre,
• des moyens de fixation entre le filtre et le porte filtre comprenant :
• selon une première possibilité, des ergots portés par le deuxième cadre s'étendant en saillie vers l'extérieur de deux montants du deuxième cadre, et des fentes solidaires du premier cadre, recevant les ergots de manière amovible, ou encore inversement,
• selon une seconde possibilité, des ergots portés par le premier cadre s'étendant en saillie vers l'intérieur de deux montants du premier cadre, et des fentes solidaires du deuxième cadre ; recevant les ergots de manière amovible.

There is proposed a filter system intended to equip a side wall of a water collection enclosure such as a well or a pit through which a drainage pipe emerges, said filter system being configured to filter the water from the collection enclosure flowing into the drain line, the filter system comprising:

• a filter holder comprising a first frame intended to be fixed to the side wall of the well,
• a filter comprising a second frame, and a filter means held by the second frame,
• fastening means between the filter and the filter holder comprising:
• according to a first possibility, lugs carried by the second frame projecting outwards from two uprights of the second frame, and slots integral with the first frame, receiving the lugs in a removable manner, or vice versa,
• according to a second possibility, lugs carried by the first frame extending inwardly projecting from two uprights of the first frame, and slots integral with the second frame; removably receiving the lugs.

According to the present disclosure, said fixing means between the filter and the filter holder comprise a single pair of said lugs, positioned at mid-height of the uprights of said second frame according to the first possibility, or even positioned at mid-height of the first frame according to the second possibility, the lugs of the pair, removably received in the slots of a single pair of slots, said slots received at mid-height of the uprights of the first frame of the filter holder according to the first possibility, or even received at mid -height of the uprights of the second frame according to the second possibility.

• le premier cadre du porte-filtre comporte une paroi périphérique contre laquelle le moyen filtrant vient en appui sur un pourtour lorsque le filtre et le porte-filtre sont fixés l'un à l'autre par lesdits moyens de fixation, les ergots reçus dans les fentes, la paroi périphérique comportant une ouverture centrale destinée à être traversée par l'eau filtrée par ledit moyen filtrant ;
• les fentes du couple sont parallèles en elles, et inclinées par rapport à la paroi périphérique du premier cadre selon la première possibilité, ou encore inclinées par rapport à un plan du deuxième cadre selon la seconde possibilité, au moins suivant deux portions de longueur, respectives des deux fentes, dites de serrage coopérant avec les ergots pour assurer la mise en pression du moyen filtrant sur le pourtour de la paroi périphérique ;
• l'angle d'inclinaison entre l'axe de chaque portion de longueur de serrage des fentes et la paroi périphérique selon la première possibilité, ou encore entre l'axe de chaque portion de longueur de serrage des fentes et le plan du deuxième cadre selon la seconde possibilité est compris entre 1° et 45°, par exemple entre 3° et 25°,
• les deux portions de longueur de serrage des fente présentent respectivement deux réductions locales d'épaisseur, de dimension inférieure aux ergots, assurant le blocage des ergots dans les fentes et le blocage du filtre au porte-filtre ;
• chaque portion de longueur de serrage des fentes est précédée d'une portion d'entrée, s'étendant suivant une direction perpendiculaire à un plan du premier cadre ou encore suivant une direction inclinée d'un angle par rapport à la direction perpendiculaire compris entre 0° et 60°, par exemple entre 0° et 45°, selon la première possibilité ou encore s'étendant suivant une direction perpendiculaire à un plan du deuxième cadre, ou encore suivant une direction inclinée d'un angle par rapport à la direction perpendiculaire compris entre 0° et 60° par exemple entre 0° et 45°selon la seconde possibilité, la portion d'entrée et la portion de longueur de serrage de chaque fente formant un coude à leur jonction, l'angle centré sur le coude entre l'axe de la portion d'entrée et l'axe de la portion de longueur de serrage étant un angle obtus ;
• la portion d'entrée de charque fente présente une forme convergente ;
• les deux montants du premier cadre du porte-filtre comprennent les deux parties montantes de la paroi périphérique, ainsi que deux parois de guidage s'étendant en saillie de la paroi périphérique, de manière parallèle entre elles, portant respectivement les deux fentes dudit unique couple de fentes selon la première possibilité, ou encore portant respectivement les deux ergots dudit couple d'ergots selon la seconde possibilité, les deux parois de guidage coopérant avec deux parois opposées des montants dudit deuxième cadre lors de la fixation du filtre au porte-filtre.

The characteristics exposed in the following paragraphs can, optionally, be implemented. They can be implemented independently of each other or in combination with each other:

• the first frame of the filter holder comprises a peripheral wall against which the filtering means bears on one periphery when the filter and the filter holder are fixed to each other by said fixing means, the lugs received in the slots, the peripheral wall comprising a central opening intended to be traversed by the water filtered by said filtering means;
• the slots of the couple are parallel in themselves, and inclined with respect to the peripheral wall of the first frame according to the first possibility, or even inclined with respect to a plane of the second frame according to the second possibility, at least along two respective length portions two slots, called clamping slots cooperating with the lugs to ensure the pressurization of the filter means on the periphery of the peripheral wall;
• the angle of inclination between the axis of each portion of the clamping length of the slots and the peripheral wall according to the first possibility, or between the axis of each portion of the clamping length of the slots and the plane of the second frame according to the second possibility is between 1° and 45°, for example between 3° and 25°,
• the two portions of the clamping length of the slots respectively have two local reductions in thickness, of smaller size than the lugs, ensuring the locking of the lugs in the slots and the locking of the filter to the filter holder;
• each portion of the clamping length of the slots is preceded by an entry portion, extending in a direction perpendicular to a plane of the first frame or else in a direction inclined by an angle with respect to the perpendicular direction comprised between 0 ° and 60°, for example between 0° and 45°, according to the first possibility or even extending in a direction perpendicular to a plane of the second frame, or even in a direction inclined at an angle with respect to the perpendicular direction between 0° and 60° for example between 0° and 45° according to the second possibility, the entry portion and the clamping length portion of each slot forming an elbow at their junction, the angle centered on the elbow between the axis of the entry portion and the axis of the clamping length portion being an obtuse angle;
• the inlet portion of the slot has a convergent shape;
• the two uprights of the first frame of the filter holder comprise the two upright parts of the peripheral wall, as well as two guide walls extending projecting from the peripheral wall, parallel to each other, respectively carrying the two slots of said single pair of slots according to the first possibility, or else carrying respectively the two lugs of said pair of lugs according to the second possibility, the two guide walls cooperating with two opposite walls of the uprights of said second frame when fixing the filter to the filter holder.

• les deux parois de guidage s'étendant de manière parallèle sur toute la hauteur des montants du premier cadre, et dans lequel deux traverses s'étendent transversalement, en haut et en bas du première cadre, y compris :
• la portion transversale basse de la paroi périphérique, et une première paroi transversale reliant les parties basses des deux parois de guidage s'étendant en saillie de la paroi périphérique, et
• la portion transversale haute de la paroi périphérique et une deuxième paroi transversale reliant les parties hautes de deux parois de guidage.

According to one embodiment:

• the two guide walls extending in parallel over the entire height of the uprights of the first frame, and in which two crosspieces extend transversely, at the top and bottom of the first frame, including:
• the lower transverse portion of the peripheral wall, and a first transverse wall connecting the lower parts of the two guide walls extending projecting from the peripheral wall, and
• the upper transverse portion of the peripheral wall and a second transverse wall connecting the upper parts of two guide walls.

According to one embodiment, the second transverse wall comprises a notch freeing access to a gripping means on an upper crosspiece of the second frame of the filter.

According to one embodiment, the first frame, including the peripheral wall, the guide walls of the uprights of the first frame carrying the slots of said single pair of slots according to the first possibility or carrying the lugs according to the second possibility, or even the first wall transverse, lower and the second transverse wall, upper, are obtained by cutting and bending a sheet of metal in one piece.

According to a second aspect, the present disclosure relates to a manhole comprising a collection enclosure comprising a side wall, a drainage pipe opening at an opening in the side wall, as well as a filter system, internal to the collection enclosure, facing the opening, the first frame of the filter holder fixed to the side wall of said collection enclosure.

Brief description of the drawings

• Fig. 1
  [Fig. 1] est une vue en perspective du système de filtre selon la présente divulgation comprenant un porte-filtre avec un premier cadre, et un filtre comportant un deuxième cadre et un moyen filtrant, le filtre couplé au porte-filtre par insertion de deux ergots solidaires des montants du deuxième cadre dans des fentes des montants du premier cadre.
• Fig. 2
  [Fig. 2] est une vue de détail du porte-filtre, lorsque le filtre est retiré.
• Fig. 3
  [Fig. 3] est une vue de détail du filtre lorsque le porte-filtre est non illustré.
• Fig. 4
  [Fig. 4] est une vue de coupe du système de filtre lorsque le filtre est couplé au porte-filtre, illustrant plus particulièrement le maintien du moyen filtrant dans le deuxième cadre du filtre, par complémentarité de forme entre des profilés semi-tubulaires du deuxième cadre et le moyen filtrant, ainsi que la mise en étanchéité du moyen filtrant sur le pourtour d'une paroi périphérique du premier cadre.
• Fig. 5
  [Fig. 5] est une vue de détail de la figure 4.
• Fig. 6
  [Fig. 6] est une vue de détail d'une fente selon la présente divulgation, y compris une portion d'entrée, convergente, axe orienté sensiblement perpendiculaire au plan du deuxième cadre, suivie d'une portion de longueur de serrage, d'axe d'incliné par rapport au plan et à la paroi périphérique d'un angle α compris entre 3° et 25, ladite portion d'entrée et la portion de longueur de serrage formant à leur jonction un coude.
• Fig. 7
  [Fig. 7] est une vue de côté d'un second mode de réalisation de trajectoire de fente, comprenant une portion d'entrée inclinée par rapport à une direction perpendiculaire au plan du premier cadre, suivie d'une portion de longueur de serrage de la fente.

Other characteristics, details and advantages will appear on reading the detailed description below, and on analyzing the appended drawings, in which:

• Fig. 1
  [ Fig. 1 ] is a perspective view of the filter system according to the present disclosure comprising a filter holder with a first frame, and a filter comprising a second frame and a filter means, the filter coupled to the filter holder by inserting two lugs integral with the uprights of the second frame in slots of the uprights of the first frame.
• Fig. 2
  [ Fig. 2 ] is a detail view of the filter holder, when the filter is removed.
• Fig. 3
  [ Fig. 3 ] is a detail view of the filter when the filter holder is not shown.
• Fig. 4
  [ Fig. 4 ] is a sectional view of the filter system when the filter is coupled to the filter holder, illustrating more particularly the maintenance of the filter means in the second frame of the filter, by complementarity of shape between the semi-tubular sections of the second frame and the filter medium, as well as the sealing of the filter medium on the periphery of a peripheral wall of the first frame.
• Fig. 5
  [ Fig. 5 ] is a detail view of the figure 4 .
• Fig. 6
  [ Fig. 6 ] is a detail view of a slot according to the present disclosure, including an entry portion, converging, axis oriented substantially perpendicular to the plane of the second frame, followed by a portion of clamping length, axis of inclined with respect to the plane and to the peripheral wall by an angle α comprised between 3° and 25, said inlet portion and the clamping length portion forming at their junction an elbow.
• Fig. 7
  [ Fig. 7 ] is a side view of a second embodiment of slot trajectory, comprising an entry portion angled with respect to a direction perpendicular to the plane of the first frame, followed by a clamping length portion of the slot.

Description of embodiments

The drawings and the description below contain, for the most part, certain elements. They may therefore not only serve to better understand this disclosure, but also contribute to its definition, where applicable.

Also, the present disclosure relates to a filter system 1 intended to equip a side wall of a water collection enclosure such as a well or a pit through which a drainage pipe opens, said system filter being configured to filter water from the collection enclosure flowing into the drain line.

• un porte-filtre 2 comprenant un premier cadre 20 destiné à être fixé à la paroi latérale du puit,
• un filtre 3 comprenant un deuxième cadre 30, et un moyen filtrant 31 maintenu par le deuxième cadre 30,
• des moyens de fixation entre le filtre 3 et le porte filtre 2 comprenant des ergots 4 portés par le deuxième cadre 30 s'étendant en saillie vers l'extérieur de deux montants du deuxième cadre 30, et des fentes 5 solidaires du premier cadre 20, recevant les ergots 4 de manière amovible, et selon une première possibilité illustrée aux figures.

The filter system includes:

• a filter holder 2 comprising a first frame 20 intended to be fixed to the side wall of the well,
• a filter 3 comprising a second frame 30, and a filter means 31 held by the second frame 30,
• fastening means between the filter 3 and the filter holder 2 comprising lugs 4 carried by the second frame 30 projecting outwards from two uprights of the second frame 30, and slots 5 integral with the first frame 20, receiving the lugs 4 removably, and according to a first possibility illustrated in the figures.

According to a second possibility of the fastening means (not shown), the lugs and the slots are in an inverted configuration, namely that the lugs are carried by the first frame extending inwardly projecting from two uprights of the first frame , and the slots are secured to the second frame; removably receiving the lugs.

The fixing of the filter 3 to the filter holder 2 is obtained by inserting the lugs 4 of the filter into the slots 5. The insertion or extraction stroke of the lugs 4 into the slots 5 to ensure the fixing of the filter to the filter holder, or on the contrary its extraction is a dimension well below the height dimension of the filter.

For example, the race of the lugs in the slots, projected along the axis of the M20 uprights, necessary for blocking the filter 3 on the filter holder 2, is less than half the length dimension of an M20 upright of the first frame 20, for example less than or equal to ¼ of the length of the upright M20.

The filter can be extracted, replaced by a short run in the direction of the uprights, in the collection chamber of the well, which allows the integration of the filter system; even for a compact collection enclosure, with low clearance above the filter holder.

According to the present disclosure, said fixing means between the filter 3 and the door 2 comprise a single pair of said lugs 4, preferably positioned at mid-height of the uprights M30 of said second frame 30 according to the first possibility, or even at mid-height amounts M20 of the first frame 20 according to the second possibility. The lugs 4 of the pair are removably received in the slots 5 of a single pair of slots.

The slots 5 are also preferably received halfway up the uprights M20 of the first frame 20 of the filter holder 2 according to the first possibility, or even halfway up the uprights M30 of the second frame 30 of the filter 3, according to the second possibility. . By mid-height, it is meant that the two lugs 4 are positioned respectively in the middle of the two uprights M30 of the second frame 30 according to the first possibility or in the middle of the two uprights M20 of the first frame 20 according to the second possibility, or in a neighboring position. in the middle, between 25% and 75% of the height of the M30 uprights according to the first possibility (or of the M20 uprights according to the second possibility), or even preferably between 33% and 66% of the height of the upright.

According to the present disclosure, the fixing of the filter 3 to the filter holder 2 is ensured by a matching only of two lugs 4 respectively in the two slots 5. It becomes possible to set up the filter on the filter holder, even if the plane of the first frame 20 and the plane of the second frame 30 are not perfectly parallel to each other during the engagement of the lugs 4 in the slots 5. The installation is facilitated; in particular if the filter 3 is manipulated by a tool such as a pole allowing engagement of the lugs 4 in the slots 5, with a positioning tolerance in the engagement.

• une grille s'étendant entre les montants M30 et traverses T30 du deuxième cadre 30, et/ou
• un média filtrant, souple, en particulier sous forme d'un bloc qui est pincé entre le premier cadre 20 et le deuxième cadre 30 lorsque les ergots 4 sont bloqués dans les fentes 5. Un tel média filtrant peut être synthétique, notamment comprendre un non tissé et/ou encore être choisi parmi les techniques suivantes : lamellaire, toile grille inox, toile nylon, polyester, géotextile, cheveux humains.

The filter means 31 may comprise:

• a grid extending between the uprights M30 and crosspieces T30 of the second frame 30, and/or
• a filtering medium, flexible, in particular in the form of a block which is pinched between the first frame 20 and the second frame 30 when the lugs 4 are blocked in the slots 5. Such a filtering medium can be synthetic, in particular include a non woven and/or be chosen from the following techniques: lamellar, stainless steel grid cloth, nylon cloth, polyester, geotextile, human hair.

The second frame 30 may comprise on its inner periphery a peripheral groove inside which the filter medium is blocked. For example, the second frame may consist essentially of four semi-tubular sections, with corner couple, placed end-to-end by their edge and fixed by their edge (for example welded) so as to form the uprights M30 and the crosspieces T30 of the second frame 30. Alternatively, a semi-tubular profile can, after making three notches, be bent at 90°, three times to form three corners of the frame with matching of two ends which are welded.

The peripheral groove receiving the edge of the filter medium is formed by the cavity of the tubular section bent at 90°, or by the extension of the cavities of the four tubular sections placed end-to-end.

According to one embodiment, the filter holder comprises a peripheral wall 200, preferably planar, against which the filter means 31 bears in a leaktight manner on an inner periphery of the filter medium, when the filter 3 and the filter holder 2 are fixed to each other by said fixing means when the lugs 4 received in the slots 5. The peripheral wall 200 comprises a central opening 201 intended to be traversed by the water filtered by said filtering means 31. When the door -filter 2 is fixed to the side wall of the well, the central opening 201, is positioned opposite the mouth of the drainage pipe, preferably via a seal.

The slots 5 of the pair of slots are parallel to each other, and preferably inclined relative to the peripheral wall 200 of the first frame 20 according to the first possibility (illustrated), or even inclined relative to a plane of the second frame according to the second possibility (not shown), at least along two portions of length 50, respective of the two slots, called clamping. The slots each extend along a plane, perpendicular to the plane of the first frame 20 according to the first possibility or perpendicular to the plane of the second frame 30 according to the second possibility.

The clamping portions of length 50 cooperate with the lugs 4 to ensure the pressurization of the filter medium 31 on the periphery of the peripheral wall 200, with the creation of a seal between the peripheral wall 200 and an inner periphery of the filter medium. In other words, the path of the lugs 4 in the two slots 5 ensures that the second frame 30 and the first frame 20 come together, by wedge effect, which ensures the pinching of the filter medium, and the sealing of the periphery of the medium against the peripheral wall 200.

The angle of "inclination α between the axis of each portion of clamping length 50 of the slots and the peripheral wall according to the first possibility (or along the plane of the second frame according to the second possibility) can be, for example, between 1° and 45°, for example between 3° and 25°.

According to one embodiment, the two length portions 50 for clamping the slots 5 respectively have two local reductions 51 in thickness, of smaller size than the lugs 4, ensuring the locking of the lugs in the slots and thus the locking of the filter to the door. -filtered.

For example at the figure 6 , and in general, the reduction in thickness can be obtained by half-round 53 or more generally a projection constituting a hard point to pass for the lug 4 during its journey in the clamping length portion 50 of the slot 5. This local reduction 51 can be the only blocking element of the filter in the filter holder, for the sake of simplification, to know in particular that the filter system has no upper blocking member such as a latch.

The half-round 53 (or more generally the projection) can be located on the same side of the slot as the side of the entrance to the slot 5, as illustrated in figure 6 Where 7 . Alternatively, the half-round 53 (or more generally the projection) can be located on the opposite side, namely on the side opposite the entrance to the slot 5 (example not shown).

In general, this half-round 53 (or more generally the projection) can be made in one piece with the upright M20 of the first frame 20 of the filter holder 2 according to the first possibility, or even in one piece. holding with the amount M30 of the second frame 30 of the filter 3 according to the second possibility, in particular when the amount M20 (or M30) is in a material with a certain elasticity. Alternatively, the half-round 53 (or more generally the projection) can be constituted by an element attached to the upright M20 according to the first possibility (or M30 according to the second possibility), and preferably in a metallic or other material, for example plastic. , having greater elasticity than that of the M20 or M30 upright.

Each clamping length portion 50 of the slots may be preceded by an entry portion 52, said entry portion extending lengthwise in a direction perpendicular to a plane of the first frame 20, as illustrated by way of example to the figure 6 for the first possibility. This inlet portion 52 opens frontally onto the first frame 20 of the filter holder 2 to allow the lugs 5 to enter.

The inlet portion 52 may also be inclined in a direction inclined by an angle (theta) with respect to the perpendicular direction comprised between 0° and 60°, for example between 0° and 45°, according to the first possibility and as illustrated at figure 7 .

The inlet portion 52 may also extend in a direction perpendicular to a plane of the second frame along, or even in a direction inclined at an angle relative to the perpendicular direction comprised between 0° and 60°, for example between 0 ° and 45° according to the second possibility (not illustrated).

The inlet portion 52 of each slot 5 has a preferably convergent shape, then is extended by the tightening portion. The entry portion 52 and the clamping length portion 50 of the slot 5 form a bend at their junction. The angle β centered on the bend between the axis of the inlet portion 52 and the axis of the tightening length portion 50 is an obtuse angle preferably strictly greater than 90° and less than 135°

According to one embodiment, the two uprights M20 of the first frame 20 of the filter holder comprise the two upright parts of the peripheral wall 200, as well as two guide walls 202, 203 extending projecting from the peripheral wall 200, way parallel to each other, respectively carrying the two slots 5 of said single pair of slots according to the first possibility (or alternatively carrying respectively the two pins of said pair of pins according to the second possibility). The inlet portions 52 of the slots 5 emerge respectively from two longitudinal edges of the guide walls 202, 203. These two guide walls are advantageously configured to cooperate in guiding with two opposite walls 302, 303 of the uprights M30 of said second frame 30 during from the filter attachment 3 to the filter holder 2.

In other words, the two guide walls 202, 203 of the uprights of the first frame 20 carrying the two slots 5 advantageously guide the uprights M30 of the second frame 30 when the lugs 4 are inserted into the slots 5.

When the filter is fixed to the filter holder by blocking the lugs in the slots, the filter, including its second frame 30 and the filter means 31 can be entirely accommodated in the inter-space between the two guide walls 202, 203 The dimension in height of the guide walls 202, 203, in a direction perpendicular to the plane of the first frame 20 is greater than or equal to the dimension in thickness of the uprights M30, in a direction perpendicular to the plane of the second frame 30.

• la portion transversale basse de la paroi périphérique 200, et une première paroi transversale 204 reliant les parties basses des deux parois de guidage 202, 203 s'étendant en saillie de la paroi périphérique, et
• la portion transversale haute de la paroi périphérique 200 et une deuxième paroi transversale 205 reliant les parties hautes de deux parois de guidage 202, 203.

According to one embodiment, the two guide walls 202, 203 extending in parallel manner over the entire height of the uprights M20 of the first frame 2, two crosspieces 20 can extend transversely, at the top and at the bottom. of the first frame 20, including:

• the lower transverse portion of the peripheral wall 200, and a first transverse wall 204 connecting the lower parts of the two guide walls 202, 203 extending projecting from the peripheral wall, and
• the upper transverse portion of the peripheral wall 200 and a second transverse wall 205 connecting the upper parts of two guide walls 202, 203.

The first transverse wall 204 and the second transverse wall 205 can be substantially parallel to each other, and can be fixed by their ends respectively to the two guide walls 202, 203.

According to one embodiment, at least the second upper transverse wall 205 comprises an indentation Ec freeing access to a gripping means 32 on an upper crosspiece T30 of the second frame 30 of the filter.

Preferably, the first transverse wall 204 has the same indentation Ec. The first transverse wall 204 and the second transverse wall 205 can be used interchangeably as upper crosspiece and lower crosspiece, or vice versa. The filter holder does not have a particular mounting direction, which avoids installation errors.

For example, the gripping means 32 is a rider, forming a recessed housing for a nose of a pole.

According to one embodiment, the first frame 20, including the peripheral wall 200, with its central opening 201, the guide walls 202, 203 of the uprights of the first frame carrying the slots 5 of said single of the pair of slots according to the first possibility (Or carrying the lugs according to the second possibility), even the first transverse wall 204, bottom and the second transverse wall 205, top, are obtained by cutting and bending a metal sheet in one piece. When the first frame 20 comprises the slots 5 according to the first possibility, the two slots 5 are obtained during the cutting of the metal sheet.

Industrial application

The present technical solutions can be applied in the field of rainwater filtration to equip sewer mouth collection enclosures.

Also, the present disclosure also relates to a manhole comprising a collection enclosure comprising a side wall, a drainage pipe opening at the level of an opening in the side wall, as well as a filter system, internal to the collection enclosure, opposite the opening, the first frame of the filter holder fixed to the side wall of said collection enclosure.

List of reference signs

• 1: Filter system,
• 2. Filter holder,
• 20. First frame,
• 200. Peripheral wall (flat),
• 201. Central opening,
• 202, 203. Guide wall,
• 204, 205. First transverse wall and second transverse wall
• 3. Filter,
• 30. Second frame,
• 31. Filter medium,
• 32. Means of gripping,
• 302, 303. Opposite walls of uprights (second frame),
• 4. Dewclaws,
• 5. Slits,
• 50. Clamp length portion,
• 51. Local Discounts,
• 52. Starter portions.
• Ec. Notch,
• M20, M30. Uprights of the first and second frame,
• T30. Traverse (second frame),
• Alpha. Angle between the axis of the clamping length portion of the slot and the peripheral wall (whichever comes first),
• Beta Angle between the axis of the entry portion of the slot and the clamping length portion
• Theta, Angle between the axis of the input portion and the perpendicular to the plane of the first frame

Claims (12)

Filter system (1) intended to equip a side wall of a water collection enclosure such as a well or a pit through which a drainage pipe emerges, said filter system being configured to filter the water from the collection enclosure flowing into the drain line, the filter system comprising: - a filter holder (2) comprising a first frame (20) intended to be fixed to the side wall of the well, - a filter (3) comprising a second frame (30), and a filter means (31) held by the second frame (30), - fixing means between the filter (3) and the filter holder (2) comprising -- according to a first possibility, lugs (4) carried by the second frame (30) projecting outwards from two uprights of the second frame (30), and slots (5) integral with the first frame ( 20), receiving the lugs (4) removably, or vice versa, -- According to a second possibility, lugs carried by the first frame extending inwardly projecting from two uprights of the first frame, and slots secured to the second frame; removably receiving the lugs, and in which said means for fixing between the filter and the filter holder comprise a single pair of said lugs (4), positioned at mid-height of the uprights (M30) of said second frame (30) according to the first possibility, or even positioned at mid-height of the first frame (20) according to the second possibility, the lugs of the couple, removably received in the slots (5) of a single pair of slots, said slots received at mid-height of the uprights (M20) of the first frame (20) of the filter holder (2) according to the first possibility, or else received at mid-height of the uprights (M30) of the second frame (30) according to the second possibility configured so that the fixing of the filter (3) to the filter holder (2) is obtained by inserting the lugs (4) of the filter into the slots (5), the stroke of insertion or extraction of the lugs (4) in the slots (5) to ensure the fixing of the filter to the filter holder, or on the contrary the extraction of the filter is a much smaller dimension to the height dimension of the filter, and in which the first frame (20) of the filter holder comprises a peripheral wall (200) against which the filtering means (31) bears on a circumference when the filter (3) and the filter holder (2) are fixed to each other by said fastening means, the lugs (4) received in the slots (5), the peripheral wall comprising a central opening (201) intended to be passed through by the water filtered by the said filter means (31). Filter system (1) according to Claim 1, in which the slots (5) of the pair are parallel to each other, and inclined with respect to the peripheral wall of the first frame (20) according to the first possibility, or else inclined with respect to a plane of the second frame (30) according to the second possibility, at least along two length portions (50), respectively of the two so-called clamping slots cooperating with the lugs to ensure the pressurization of the filter means (31) on the periphery of the peripheral wall (200) by wedge effect. Filter system (1) according to Claim 2, in which the angle of inclination (a) between the axis of each portion of the clamping length of the slots and the peripheral wall according to the first possibility, or else between the axis of each portion of the clamping length of the slots and the plane of the second frame (30) according to the second possibility is between 1° and 45°, for example between 3° and 25°. Filter system (1) according to Claim 3, in which the two length portions (50) for clamping the slots (5) respectively have two local reductions (51) in thickness, of a dimension smaller than the lugs, ensuring the blocking of the lugs in the slots and blocking the filter to the filter holder. Filter system (1) according to one of Claims 2 to 4, in which each clamping length portion (50) of the slots is preceded by an inlet portion (52), extending in a direction perpendicular to a plane of the first frame, or else in a direction inclined at an angle (Theta) with respect to the perpendicular direction comprised between 0° and 60°, for example between 0° and 45°, according to the first possibility, or else s extending along a direction perpendicular to a plane of the second frame along, or even along a direction inclined at an angle relative to the perpendicular direction comprised between 0° and 60° for example between 0° and 45° according to the second possibility, the entry portion (52) and the clamping length portion (50) of each slot (5) forming an elbow at their junction, the angle (β) centered on the bend between the axis of the inlet portion (52) and the axis of the clamp length portion (50) being an obtuse angle. Filter system (1) according to claim 5, wherein the inlet portion (52) of each slot (5) has a converging shape. Filter system (1) according to one of Claims 1 to 6, in which the two uprights (M20) of the first frame (20) of the filter holder comprise the two rising parts of the peripheral wall (200), as well as two guide walls (202, 203) projecting from the peripheral wall (200), parallel to one another, respectively carrying the two slots (5) of said single pair of slots according to the first possibility, or else carrying respectively the two lugs of said pair of lugs according to the second possibility, the two guide walls cooperating in guiding with two opposite walls (302, 303) of the uprights (M30) of said second frame (30) when fixing the filter (3) to the filter holder (2). Filter system (1) according to Claim 7, in which the two guide walls (202, 203) extending in a parallel manner over the entire height of the uprights (M20) of the first frame (2), and in which two crosspieces (T20) extend transversely, above and below the first frame (20), including: - the lower transverse portion of the peripheral wall (200), and a first transverse wall (204) connecting the lower parts of the two guide walls (202, 203) extending projecting from the peripheral wall, and - the upper transverse portion of the peripheral wall (200) and a second transverse wall (205) connecting the upper parts of two guide walls (202, 203). Filter system (1) according to Claim 8, in which the second transverse wall (205) comprises a notch (Ec) providing access to a gripping means (32) on an upper crosspiece (T30) of the second frame (30) of the filtered. Filter system (1) according to one of Claims 7 to 8, in which the first frame (20), including the peripheral wall (200), the walls of guide (202, 203) of the uprights of the first frame carrying the slots (5) of said single of the pair of slots according to the first possibility, or carrying the lugs according to the second possibility, or even the first transverse wall (204), bottom and the second transverse wall (205), high, are obtained by cutting and bending a metal sheet in one piece. Filter system according to one of claims 1 to 10, in which the filter means (31) comprises: - a grid extending between the uprights (M30) and crosspieces (T30) of the second frame 30, and/or - a filter medium, flexible, in particular in the form of a block which is pinched between the first frame (20) and the second frame (30) when the lugs (4) are blocked in the slots (5) which can be synthetic , in particular comprising a nonwoven and/or alternatively being chosen from the following techniques: lamellar, stainless steel grid cloth, nylon cloth, polyester, geotextile, human hair. Manhole comprising a collection enclosure comprising a side wall, a drainage pipe opening at the level of an opening in the side wall, as well as a filter system according to one of Claims 1 to 11, internal to the collection enclosure, facing the opening, the first frame (20) of the filter holder (2) fixed to the side wall of said collection enclosure.

Images