FR3063753A1 - "DRAINAGE CHANNEL OF LIQUIDS IN AREAS WITH CHEMICAL OR BIOLOGICAL RISK" - Google Patents

Abstract

The present invention relates to a channel (1) for draining liquids in zones with chemical or biological risk and / or zones with a controlled environment, open at its upper part and having two side walls (3) provided with an upper edge. (3a), said channel (1) having in its light at least two transverse reinforcement means (5) whose ends are inserted into said side walls (3), said channel (1) being provided with a grid (2). ) resting on said transverse reinforcement means (5) so that the upper face of the lateral edges (2a) of the grid (2) is in the same plane as the upper edges (3a) of the side walls (3) of said channel (1) (1), the invention also relates to the method for obtaining such a channel.

Description

Holder (s): SYRAL BELGIUM NV Limited company, BUREAU ETUDES INDUSTRIE MAINTENANCE.

Extension request (s)

Agent (s): KOB NV.

(54) “LIQUID DRAINAGE CHANNEL IN CHEMICAL OR BIOLOGICAL RISK AREAS.

FR 3,063,753 - A1 _ The present invention relates to a channel (1) intended for draining liquids in zones with chemical or biological risk and / or zones with controlled environment, open in its upper part and having two side walls (3 ) provided with an upper edge (3a), said channel (1) having in its lumen at least two transverse reinforcing means (5) whose ends are inserted in said side walls (3), said channel (1) being provided with a grid (2) resting on said transverse reinforcing means (5) so that the upper face of the lateral edges (2a) of the grid (2) is in the same plane as the upper edges (3a) of the side walls (3) of said channel (1) (1), the invention also relates to the method for obtaining such a channel.

Technical area

The present invention relates to a waste water evacuation channel usable in any room and particularly suitable for clean rooms, premises for preparation of transformation or storage of foodstuffs, laboratories, industrial sites of chemistry, petrochemistry or biotechnology and more particularly for clean rooms or controlled environments.

Technical background

The wastewater drainage channels embedded in the ground are often provided on industrial sites or public transit areas such as hospitals, these structures are also found in areas with controlled environment or clean rooms whose regular cleaning requires drainage of waste water and elimination of all sources of contamination. In addition to the solidity due to their embedding most often in concrete, their location on the ground, these structures must therefore guarantee the elimination of wastewater, the absence of a stagnation zone for water or liquid toxic products, d accumulation of particles or organic waste. Finally, these structures intended for the ground, must be easy and inexpensive to produce.

In general, the wastewater collection channels are formed by folding a sheet of metal. The channel formed has at the upper edges of its side walls two side rails on which the removable grid of the channel rests. The prior art also describes channels for which the grid rests directly on the upper edges of the side walls of the channel. However, this support zone which is the contact zone between the grid and the channel extends all along the channel. It constitutes a zone of stagnation of contaminated water since it is a large horizontal surface and a zone of accumulation of chemical or organic particles since it is difficult to access. Consequently, with humidity, it represents a zone of appearance of molds, a hotbed of proliferation of microorganisms but also a zone of uncontrolled accumulation of potentially dangerous and / or toxic products. This risk is significant since this zone extends on both sides of the canal and over its entire length. In addition, it also constitutes a zone of wear and corrosion of the channel and the grid.

Consequently, in use, these channels must be subject to regular and meticulous cleaning, in particular by dismantling the grid and the use of corrosive products in order to eliminate the aggregates formed and / or disinfecting agents. , biocides to eliminate bacterial biofilms or molds.

Finally, in addition to constituting a zone of weakness and a privileged zone of corrosion in the general structure of the channel, the flange intended to support the grid increases its manufacturing cost.

The object of the present invention is to provide a wastewater collection channel which is particularly suitable for premises for preparation of transformation or storage of foodstuffs, pharmaceutical laboratories, hospitals or industrial sites of the food and cosmetic industry. and chemical, and more particularly, all clean rooms and / or with controlled environment, a channel of installation and easy use, allowing a reduction of the stagnation of waste water, a reduction of the foci of proliferation of microorganisms, zones uncontrolled accumulation of potentially dangerous and / or toxic products, the grid of which is both easily removable while being stable and capable of withstanding high pressures. Finally, the object of the present invention is to provide a structure which is easy to manufacture and at a reduced cost.

Summary of the invention

The present invention relates to a channel (1) in particular intended for draining liquids in zones with chemical or biological risk and / or zones with controlled environment, open in its upper part and provided with a grid (2), said channel ( 1) having two side walls (3) provided with an upper edge (3a), said channel (1) having in its lumen at least two transverse reinforcement means (5) whose ends are inserted in said side walls (3 ), said grid (2) resting on said transverse reinforcing means (5) so that the upper face of the grid (2) is in the same plane as the upper edges (3a) of the side walls (3) of said channel (1).

The present invention also relates to a method for producing a channel (1) comprising the following steps:

- supply of a channel (1) open in its upper part and having two side walls (3) provided with an upper edge (3a), said channel being obtained:

(i) by folding or pressing an aluminum, metal or metal alloy sheet, or (ii) by molding or injecting a liquid resin into a mold

- supply of a grid (2) intended for said channel (1)

fixing in the lumen of the channel (1) of at least two transverse reinforcing means (5) by fixing each end of the transverse reinforcing means (5) in the side walls (3) of said channel (1) so that the grid (2) rests on said transverse reinforcement means (5) and that the upper face of the grid (2) is in the same plane as the upper edges (3a) of the side walls (3) of said channel (1) .

FIGURE

Figure 1 is a top view of the channel (1) according to a first variant of the invention.

Figure 2A is a cross-sectional view along arrow A of the channel (1) of Figure 1 with a view of the grid (2) resting on a transverse reinforcing means (5).

Figure 2B is a cross-sectional view along arrow B of the channel (1) of Figure 1 with a view of the grid (2) between two transverse reinforcing means (5).

Figure 3 is a cross-sectional view according to a second variant of the channel (1) U-shaped with a view of the grid (2) resting on a transverse reinforcing means (5) at its carrier bars (2b) . For illustrative reasons, the channel (1) is provided on one side with a fold (4) and on the other with flanges (4a).

Detailed description of the invention

The present invention relates to a channel (1) in particular intended for draining liquids in zones with chemical or biological risk and / or zones with controlled environment, said channel being open in its upper part and having two side walls (3) provided with 'an upper edge (3a) typically provided with a fold (4), or a flange (4a), said channel (1) having in its lumen at least two transverse reinforcement means (5) whose ends are' insert into the side walls (3), the channel (1) being provided with a grid (2) resting on the transverse reinforcement means (5) so that the upper face of the grid (2) and at least the upper face of the lateral edges (2a) of the grid (2) is included in the same plane as the upper edges (3a) of the lateral walls (3) of said channel (1).

The channel (1) according to the invention is particularly suitable for being integrated into the ground, for example in concrete, resin, metal or wooden floors. The integration of said channel into the ground can be done by pouring in the mass, by welding or nailing. Said channel (1) according to the invention is particularly suitable for poured floors such as concrete, resin, polyurethane or epoxy floors found in passage areas, exhibition rooms, homes, playrooms and classroom, meeting rooms, hospitals and penal establishments, public spaces and utility buildings, etc ... Typically, when the channel (1) is welded or nailed into the ground, the fixing area is preferably at the level folds (4) located at the upper edge (3a) of the side walls (3) of said channel (1). Said folds (4) are preferably made of the same material as said channel (1) but may be provided with a reinforcement zone (6).

By channel (1) according to the invention means a U-shaped or V-shaped structure providing a central lumen open in its upper part. The shape of said channel (1) can nevertheless adapt to the soil concerned and have some deformations at the level of its walls. Thus, the bottom wall (7) of the channel (1) can be concave (in the case of a U-shaped channel) or flattened or pointed (V-shaped channel with a central fold (7a)). Thus, said channel (1) is provided with two side walls (3) substantially vertical, in other words side walls (3) vertical or slightly inclined according to the shape given to the channel (1).

In one embodiment, the channel (1) of the invention is formed by folding, welding or pressing. Typically from a sheet of aluminum, metal or a metal alloy such as steel and more particularly stainless steel. According to another embodiment, said channel (1) can be obtained by molding or injection of a composition such as for example a liquid resin in a mold.

The channel (1) according to the invention preferably has a depth (P) of 3 cm to 40 cm, preferably of 5 cm to 20 cm, even more preferably between 7 and 15 cm. The depth of the channel (1) can vary along its length so as to facilitate the flow. Typically, a slope of 1 to 5% may be considered depending on the nature of the suspension or the liquid to be removed and more particularly depending on its viscosity or its load of suspended particles.

The channel (1) according to the invention preferably has a width (L) of 5 cm to 100 cm, preferably from 7 cm to 40 cm, even more preferably between 15 and 30 cm.

The channel (1) typically has a length of 50 cm to 5 m, preferably 1 m and 4 m, preferably between 1.5 m and 3 m.

The channels according to the present invention are particularly advantageous in that they can be assembled by hermetic fixing of several channels (1) according to the invention. The hermetic fixing can be implemented by various techniques well known to those skilled in the art, typically by interlocking, gluing or welding.

The internal surface of the channel (1) can undergo a surface treatment intended to reduce the hydrophilicity of the internal faces of the walls of the channel (1) and thus reduce the stagnation of water and the multiplication of microorganisms. Such treatments are hydrophobic coatings such as, for example, polytetrafluoroethylene (PTFE), ceramic coatings or super hydrophobic and / or oleophobic coatings using the nanoparticles, in particular nanostructured silica colloids (SiO2).

The internal surface of the canal (1) can also undergo a treatment providing for the application of an agent limiting, arresting or inhibiting the development of microorganisms such as bactericidal agents, fungicides, bacteriostatic or mycobacterial bacteria. Typically, a film can be applied to the internal surface of the channel (1), advantageously, said film comprises an antiseptic agent known to those skilled in the art. By way of example, mention may be made of chlorhexidine diacetate, chlorhexidine gluconate, triclosan, benzalkonium chloride, parachlorometaxylenol (PCMX) or nanoparticles of such as silver, copper or ceramic nanoparticles.

By “transverse reinforcing means (5)” is meant reinforcing elements of the structure of the channel, and typically of the resistance of the channel to the forces exerted transversely to its main axis. Thus, the axis of the transverse reinforcing means (5) crosses the main axis of the channel (1). More particularly, these transverse reinforcement means (5) maintain the width of the channel over its entire length. Advantageously, the ends of the transverse reinforcing means (5) are inserted into the internal face of the side walls (3) of the channel (1) according to the invention. Typically, the axis of the transverse reinforcing means (5) is perpendicular to the axis of the channel (1).

Advantageously, the transverse reinforcing means (5) are rigid structures, preferably rectilinear.

In one embodiment, the transverse reinforcement means (5) of said channel (1) are provided every 20 cm to 2 m, preferably every 0.7 to 1.5 m, even more preferably every 1 m .

Typically, the transverse reinforcing means (5) have a stop at their upper edge or have a concave upper edge. According to one embodiment, the transverse reinforcing means (5) have a shape in circular or oval section or in polygon such as a triangle, a square, a rhombus, a pentagon, hexagon or an octagon. These forms are particularly advantageous in that they reduce the contact zones between the grid (2) and the transverse reinforcing means (5) and thus facilitate the flow of water. Consequently, they help reduce the stagnation of wastewater, the accumulation of organic or chemical particles responsible for the creation of corrosion zones or infectious foci.

Typically, these transverse reinforcement means can be hollow or solid. Said transverse reinforcing means (5) have a length adapted to the width of the channel (1) typically a length of 5 cm to 100 cm, preferably from 7 cm to 40 cm, even more preferably between 15 and 30 cm.

Advantageously, the transverse reinforcing means (5) have in section a widest dimension of between 10 and 25 mm, preferably between 15 and 20 mm.

Advantageously, the transverse reinforcing means (5) are fixed to the transverse walls by means known to a person skilled in the art typically by welding, screwing or nailing, preferably by welding.

According to one embodiment of the invention, said transverse reinforcing means (5) are inserted in the upper third of the side walls (3).

Advantageously, the transverse reinforcing means (5) are the main means of supporting said grid. According to a variant of the invention, said transverse reinforcing means (5) are the only means for supporting the grid (2).

By "upper edges (3a) of the side walls (3)" means the end of the side walls (3) of the channel (1). The upper edges (3a) of the side walls (3) are located at the same height as the upper face of the support in which the channel is enclosed such as the ground (S) when the channel is included in the ground. Advantageously, the upper edges (3a) of the side walls (3) are in the same plane as the upper face of the grid (2) and at least as the upper face of the side edges (2a) of the grid (2). The lateral edges (2a) of the grid (2) adjoining the lateral walls (3) of the channel (1), the upper face of the lateral edges (2a) of the grid (2) are in the same plane as the upper edges ( 3a) side walls (3) of the channel (1). Typically, the side edges (2a) of the grid (2) are at a distance of 5 to 3mm from the upper edges (3a) of the side walls (3).

The upper face of the lateral edges (2a) of the grid (2) and the upper edges (3a) of the lateral walls (3) are flush with the upper face of the support in which the channel is enclosed, typically flush with the face top of the ground. In other words, the upper edges (3a) of the side walls (3), the upper face of the grid (2) and at least the upper face of the side edges of the grid (2) and the upper face of the support in which the channel is enclosed are in the same plane.

The grid (2) being intended to reproduce the deformations of the soil, it can be flat or slightly concave. Typically the gille (2) is substantially planar.

By grid (2) according to the invention means a support more or less perforated typically said grid (2) is a grating or a perforated sheet. It can be obtained by methods well known to those skilled in the art.

For example by pressing or welding or electroforging.

The grid (2) according to the invention typically has a width adapted to the width of the channel (1), typically from 5 cm to 100 cm, preferably from 7 cm to 40 cm, even more preferably between 15 and 30 cm.

The grid (2) according to the invention typically has a thickness of 10 to 40 mm, preferably around 30 mm.

The grid (2) according to the invention rests on said transverse reinforcing means (5). Typically, the thickness of the grid (2) corresponds to the distance between the upper edge of said transverse reinforcing means (5) and the upper edge (3a) of the side walls (3) of said channel (1). Typically, the grid (2) can be provided with support bars (2b) which are then the only areas of contact with the transverse reinforcing means (5).

Advantageously, means for fixing the grid (2) to the channel (1) can be envisaged. In one embodiment of the invention, the grid (2) is removable. Thus, when the grid (2) is removable, means for reversibly fixing the grid (2) to the channel (1) can be envisaged. Such reversible fixing means can for example be reversible fixing means of the grid (2) to the transverse reinforcement means (5). These may be means for screwing or clipping the removable grid (2) to said transverse reinforcement means (5). The advantage conferred by these reversible fixing means is that not being on the side walls (3) of the channel (1), they are not likely to degrade its integrity and in particular its airtightness. Such reversible fixing means are advantageous for preventing the grid (2) from being too easily separable from said channel (1). According to a second embodiment, the grid (2) is fixed and can be fixed by irreversible fixing means, for example by welding.

The structure of the channel (1) according to the invention is particularly advantageous in that it also allows, for a gate width (2) identical to the channels of the prior art, to have a lumen of the channel (1) more big.

The invention also relates to a method for producing a channel (1) comprising the following steps:

- Supply of a channel (1) open in its upper part and having two side walls (3) provided with upper edges (3a) typically provided with a fold (4) or a flange (4a), said channel being got :

(i) by folding or pressing an aluminum, metal or metal alloy sheet, or (ii) by molding or injecting a liquid resin into a mold

- supply of a grid (2) intended for said channel (1)

fixing in the lumen of said channel (1) at least two transverse reinforcing means (5) by fixing each end of said transverse reinforcing means (5) in said side walls (3) of said channel (1) so that said grid (2) can rest on said transverse reinforcing means (5) and that the upper face of the grid (2) is in the same plane as the upper edges (3a) of the side walls (3) of said channel (1 ).

Finally, the invention relates to a building provided with the channel according to the invention and comprising in particular an area with chemical or biological risk and / or an area with controlled environment.

By “chemical or biological risk zone” is meant an zone in which, due to the use of chemical or biological product potentially toxic or dangerous for man or the environment, risk prevention plans have been drawn up for this zoned.

The expression “controlled environment area” refers to an area in which the environment is controlled in particular to protect the people or animals passing through it from any chemical, infectious or biological risk or from the fact that the products used, obtained or stored represent or could represent a toxic or biological risk for humans, animals or the environment due to their transit in this area, following a transformation of said products for example, due to chemical or biological contamination. For example, when the relevant products obtained or stored are intended for human or animal food or for pharmacy or cosmetics. It can also be a clean room, a clean room or a sterile room.

Typically, said chemical or biological risk zone and / or said zone with controlled environment is a zone for the preparation, processing or storage of foodstuffs, cosmetic, pharmaceutical or chemical products, a pharmaceutical laboratory or a hospital or veterinary premises.

Claims (11)

1. Channel (1) in particular intended for draining liquids in zones with chemical or biological risk and / or zones with controlled environment, open in its upper part and having two side walls (3) provided with an upper edge (3a ), said channel (1) having in its lumen at least two transverse reinforcing means (5) whose ends are inserted in said side walls (3), said channel (1) being provided with a grid (2) resting on said transverse reinforcing means (5) so that the upper face of the side edges (2a) of the grid (2) is in the same plane as the upper edges (3a) of the side walls (3) of said channel (1 ). 2. Channel (1) according to claim 1 characterized in that said transverse reinforcing means (5), are the main support means of the grid (2). 3. Channel (1) according to either of claims 1 and 2 characterized in that said transverse reinforcing means (5) have a stop at their upper edge or have a concave upper edge. 4. Channel (1) according to any one of claims 1 to 3 characterized in that said transverse reinforcing means (5) are inserted in the upper third of the side walls (3). 5. Channel (1) according to any one of the preceding claims, characterized in that said channel is provided with means for reversibly fixing the grid (2) to the channel (1). 6. Channel (1) according to any one of the preceding claims, characterized in that said transverse reinforcement means are provided every 20 cm to 2 m. 7. Channel (1) according to any one of the preceding claims, characterized in that the internal surface of said channel is provided with a hydrophobic, super-hydrophobic and / or oleophobic coating. 8. Channel (1) according to any one of the preceding claims, characterized in that it has a length (I) of 50cm to 2m and a depth (P) of 3cm to 40cm. 9. Method for producing a channel (1) comprising the following steps: - supply of a channel (1) open in its upper part and having two side walls (3) provided with an upper edge (3a), said channel being obtained: (i) by folding or pressing an aluminum, metal or metal alloy sheet, or (ii) by molding or injecting a liquid resin into a mold - supply of a grid (2) intended for said channel (1) fixing in the lumen of said channel (1) at least two transverse reinforcing means (5) by fixing each end of said transverse reinforcing means (5) in the side walls (3) of the channel (1) so that the grid (2) rests on the transverse reinforcement means (5) and that the upper face of the side edges (2a) of the grid (2) is in the same plane as the upper edges (3a) of the side walls (3 ) of said channel (1). 10. Building provided with the channel according to any one of claims 1 to 8, said building preferably comprising an area of chemical or biological risk and / or an area with controlled environment. 11. Building according to claim 10, characterized in that said zone with chemical or biological risk and / or said zone with controlled environment is a zone of preparation, transformation or storage of foodstuffs, cosmetic, pharmaceutical or 5 chemical, a pharmaceutical laboratory or a local hospital or veterinary.