FR3116444A1 - Equipment for retaining macro-waste transported by rainwater - Google Patents

Abstract

TITLE: "Equipment for retaining macro-waste conveyed by rainwater Equipment for retaining macro-waste (100) comprising: - a sleeve (1) installed in the outlet of the pipe and protruding from it to fix a net (2 ) having an internal part (1a) coming into the pipe (CA) and an external part (1b) provided with lugs (11) distributed around the periphery to be fixed there by fixing members (13b) against the face of the pipe ( THAT). The net (2) has an upstream opening (21a) provided with a peripheral rope (21) accessible at the periphery, and receiving shackles (4). A peripheral link (3) having two ends (3a, 3b), integrally connected to a point of the sleeve (31), passes through the rings (12) and through the pins (4), and a breaking member (32) connects the two ends (3a, 3b) of the peripheral link (3). Figure 1

Description

Equipment for retaining macro-waste transported by rainwater

FIELD OF THE INVENTION

The present invention relates to equipment for retaining macro-waste transported by rainwater, installed at the outlet of a pipeline at the arrival of the flow of loaded water and comprising: a sleeve installed in the outlet of the pipeline and protruding from it to attach a net intended to retain macro-waste.

STATE OF THE ART

According to document US 6,334,953, a macro-waste retention installation is known at the outlet of a loaded rainwater pipe. This installation consists of a split sleeve partially engaged in the outlet of the pipe and receiving a net fixed on the sleeve which protrudes from the pipe using a threaded collar and screw tightening the edge of the net on the muff.

The split sleeve is itself locked in the pipe by a screw spacer device which spreads the sleeve in the pipe so as to block it therein.

When the net is loaded, it is detached from the sleeve and the opening of the net is tied, which can then be removed and replaced with a new net.

But this installation is not designed to resist the thrust of a sudden flow of loaded water, especially if the net forming a filter is itself already partially loaded and thus constitutes a serious obstacle to the evacuation of the flow of water. loaded water. It is likely that the net will be ripped off and the macro-debris it contains will be dispersed as if it had not been collected. However, this load can correspond to a non-negligible weight of macro-waste which will thus be rejected without being retained although they have been filtered.

PURPOSE OF THE INVENTION

The aim of the present invention is to develop equipment for retaining macro-waste conveyed by a flow of rainwater to improve the efficiency of the filtering of macro-waste compared to the solutions of the state of the art by facilitating the implementation of the means collection.

DESCRIPTION AND ADVANTAGES OF THE INVENTION

To this end, the subject of the invention is an Equipment for retaining macro-waste conveyed by rainwater, installed at the outlet of a pipe at the arrival of the flow of loaded water and comprising: a sleeve installed in the outlet of the pipe and protruding from it to attach a net intended to retain macro-waste. The sleeve has an internal part coming into the pipe and an external part emerging from the latter and provided with lugs distributed around the periphery to come against the face of the pipe to be fixed there by fastening members retaining the lugs against the face of the pipe. the outlet of the pipe, the net has an upstream opening whose edge is provided with a peripheral rope at the edge of the upstream opening, leaving the rope accessible at least partially on the periphery, shackles distributed on the periphery of the upstream opening of the net are crossed by the upstream peripheral rope, a peripheral link having two ends, and integrally connected to a point of the cuff, passes through the rings and through the shackles, and a breaking member having a resistance threshold at the break connects the two ends of the peripheral link.

The peripheral link according to the invention is a connecting member surrounding the periphery of the sleeve and whose two ends are connected by the rupture member. The peripheral link is continuous so that it can slide in the ring of each leg and also in the shackles connected to the rope of the upstream opening of the net.

The peripheral link is connected to the cuff by a point link at a point, preferably intermediate at the ends and not at one of the ends to simplify the installation of this link during the installation of the net or the removal of the link because the two link parts, in particular if they are halves of the link, they pass more easily and more quickly through the rings and through the shackles than the total length of a link fixed to the cuff by one end and passing through all the rings and through all the shackles.

This is also true for setting up: it is easier to pull a half link through the rings and shackles (one half of these).

More advantageously, the peripheral link is a chain.

It forms a loop with the rupture device. The chain as a peripheral link is a particularly advantageous solution because of the flexibility of the chain by the links of the chain and the reliability of the latter in the long term.

According to another feature, the equipment includes a safety cable connected at one end to a tie-down point on the infrastructure and at the other end to the upstream rope.

The safety cable makes it possible to retain the net detached from the sleeve while closing the opening of the net by the reaction of the cable to the traction that the net pushed by the flow of water exerts on the cable by the upstream rope.

According to another characteristic, the sleeve is split longitudinally and fixed to the outlet of the pipe by radial fastening members engaged through the internal part of the sleeve in the wall of the pipe and longitudinal fastening members connecting the tabs at the face of the pipe.

The longitudinal slit of the cuff allows it to be adapted tightly to the inside diameter of the cuff, a diameter which may vary slightly from one manufacture to another.

This tight fixing of the cuff also guarantees the hold of the cuff in the long term, reducing or avoiding the vibrations which could cause the flow of water passing through the cuff.

According to another feature, the tabs are bracket tabs with two branches, the longitudinal branch of which is fixed radially to the sleeve and a radial branch is applied against the face of the pipe while being fixed thereto longitudinally.

This fixing by lugs coming against the exterior face of the pipe makes it possible to distribute the fixing points in a regular manner, in combination with the radial fixing elements passing through the internal part of the sleeve to fix it inside the channeling.

The peripheral attachment points of the lugs and those of the attachment members of the internal part of the sleeve are preferably offset so that the forces are not exerted in the same radial plane of the pipe for each group of two attachment points .

According to another advantageous characteristic, the rings are welded to the legs.

The rings thus fixed to the cuff by the lugs guarantee the effectiveness of the fixing, a good transmission of the forces and these rings thus fixed facilitate the threading of the chain.

According to another characteristic, the rupture device is a plastic collar intended to resist forces less than or equal to a threshold.

The rupture device consisting of a plastic collar is a simple element to manufacture, the closure of which is easily adjusted by the type of closure of the collar which is generally a kind of ratchet integrated into the collar to adapt to the size that the collar must have in each particular case. In addition, this collar is easily cut to detach the net for emptying.

According to another advantageous characteristic, the rupture member (32) is a broken link or a plastic clip intended to resist forces below a threshold.

The breaking point of this component is defined by its material characteristics and its dimensions.

The present invention will be described below in more detail using an embodiment shown in the accompanying drawings in which:

front view of macro-waste containment equipment connected to an infrastructure consisting of a masonry structure and a pipe outlet,

front view of the equipment without the net,

front view of the equipped cuff but without the peripheral link,

sectional view by an axial plane of the fixed part of the equipment,

detail view of the sectional view of the ,

front view on an enlarged scale showing the means for retaining the net to the sleeve fixed to the infrastructure.

DESCRIPTION OF AN EMBODIMENT

According to , the subject of the invention is an equipment for retaining macro-waste 100 at the outlet of a river water pipeline CA. Generally, the site receiving such equipment is made up of a masonry structure OM from which the end of the pipeline CA emerges. The retaining equipment 100 consists of a part installed at the outlet of the pipeline and a removable part, that is to say a net 2 retaining the macro-waste and which, once loaded, is removed from the fixed part to be emptied into a skip and then put back in place. It can also happen that under the effect of a thrust of a sudden flow on a charged net which obstructs the outlet of the pipe, the net detaches and remains retained only by the safety cable 5 fixed to the masonry. It then frees the outlet of the CA pipe but the traction exerted by the safety cable 5 tightens the opening of the net 2.

The fixed part of the equipment consists of a sleeve 1 engaged by an internal part 1b in the outlet of the AC pipe and fixed to it. The sleeve 1 protrudes from the pipe CA by an external part 1a receiving the end piece of the upstream opening of the net 2, provided with an upstream peripheral rope 21 connected to a peripheral link 3 in the form of a chain 3 by shackles 4. The peripheral link in the form of a chain 3 is connected by lugs 11 integral with the cuff 1. The chain 3 forms a loop, the ends of which are connected by a rupture member 32 opening under the effect of a pull greater than a set value to allow the net 2 to detach and release the end of the pipe CA in the circumstances described above.

The net 2 is connected to a safety cable 5 itself fixed to the masonry OM by a lashing point 51. The net 2 in the form of a sleeve thus has, in addition to the upstream opening 2a, a downstream opening 2b closed by a downstream peripheral rope 22 blocked by a removable clamp. A longitudinal rope 23 connects the two peripheral ropes 21, 22 and makes it possible to handle the loaded net 2 in order to pull it and lift it then unload it in the suspended position above a bucket, through the downstream opening 2b.

The detail of the implementation of the equipment 100 is the subject of the following description of Figures 2 to 5.

According to Figures 2 and 3, the fixed part of the equipment 100 in front view with respect to the pipe CA (view perpendicular to the axis XX of the pipe) consists of the sleeve 1 split longitudinally (axis XX) in leaving a gap 10 free so as to allow the sleeve 1 to adapt closely to the internal shape of the pipe CA to which the sleeve 1 is fixed by attachment members 13a. These are, for example, screws engaged in dowels. These attachment members 13a are substantially radial.

The outer part 1a of the cuff 1 carries lugs 11 in the form of an angle iron with two branches 11a, 11b at right angles; one of the branches 11a is fixed / welded to the sleeve 1, flat and the other branch 11b projects radially. The lugs 11 are preferably distributed in an equiangular manner around the sleeve 1. The radial branches 11b have an orifice to receive a longitudinal attachment member 13b (axis XX) in the front face of the pipe CA.

The front face of the CA pipe has an attachment point 31 for the chain 3.

Figures 2 and 3 show that the radial attachment members 13a passing through the internal part 11b of the sleeve 1 are aligned longitudinally on the longitudinal fixing points 13b except the securing point 51 of the safety cable 5 to prevent the shock on the net 2 producing the opening of the rupture member 32 is exerted on the sleeve 1 and weakens its fixing in the pipe CA.

The section view ( ) passing through two diametrically opposed legs 11 and its enlarged detail view of the show the organization of the fixed part of equipment 100.

The radial branch 11b of each lug 11 bears against the face of the CA pipe to be blocked by the attachment members 13b in the form of screws engaged in the dowels.

For reasons of simplification of the drawings, the attachment points of the cuff 1 are represented, in the radial plane of the attachment point of the radial attachment member 13a passing through a lug 11 which is in the plane of the member hooking 13b of the radial branch 11b; however, it is preferable that these fixing points are not coplanar but are offset by a half-pitch which is here the interval between two legs 11 so as not to weaken the end of the pipe.

Each leg 11 is provided with a ring 12 welded to the branch 11b for the passage of the peripheral link 3 which, in this example, is a chain 3.

The internal part 1b of the sleeve 1 is provided with a peripheral or discontinuous reinforcement 14, associated with a radial screw 13a.

There shows the detail of the connection between the net 2 and the sleeve 1. This front view causes the free interval 10 of the sleeve 1 to coincide with the position of the rupture member 32 connecting the two ends 3a, 3b of the peripheral connecting member (here a chain 3) passing through the shackles 4 crossed in the upstream peripheral rope 21 of the net 2. It should be emphasized that, on the one hand, the shackles 4 are sized to allow the links of the chain 3 and, on the other hand, these shackles 4 do not pass through the meshes of the chain.

This enlarged detail view shows the pins 4 provided with a nut 41 which is, for example, retained freely in rotation by a non-detailed collar at one end of the loop formed by the pin 4 and is screwed at the other threaded end of the shackle 4. This simple closing/opening mode makes it possible to quickly associate the shackles 4 with the upstream rope 21 of the net 2. The shackles 4 are only removed from the rope 21 when the net is worn and must be replaced. The shackles 4 are distributed around the periphery of the upstream opening 2a of the net 2 as shown in or at the and which, however, does not explicitly represent the net.

The distribution of the pins 4 is equal to that of the legs 11 so that there is, each time, a pin 4 in the interval of two legs 11.

As already indicated, the chain 3 is secured by a link to the attachment point 31 secured to the infrastructure which here is an attachment point carried by the sleeve 1 to bring together as many elements as possible on the equipment 100, except the securing point 51 of the safety cable 5 to prevent the impact on the net 2 producing the opening of the rupture member 32 from being exerted on the sleeve and weakening its attachment to the pipe CA.

The installation of the net 2 is done simply and quickly. The net 2 assumed to be empty is fitted by its upstream opening 2a and its rope 21 on the outer part 1a of the cuff 1. The rope 21 is not tight on the cuff 1. Then the two ends 3a, 3b of the chain 3 in the successive 4 links and in the rings 12 alternately as shown in the . Then, the two ends 3a, 3b of the chain 3 are assembled by the breaking member 32. The safety cable 5 is also connected by its link 51 to a pin 4.

To remove the net 2, the breaking member 32 is cut to free the two ends 3a, 3b and therefore the two strands of the chain 3 by releasing the chain from the shackles 4 by also going back through the rings 12 then the net 2 is released loaded with the cuff 1, after having closed the upstream opening 2a of the net by the rope 21. Then the net is emptied and it is put back in place by proceeding in the opposite direction, passing the two strands of the chain 3 through the alternation of shackles 4 and rings 12 then the looping of the chain 3 by the breaking device 32.

Another possibility is to open the shackles leaving the chain 3 in place and the breaking device 32 intact. The emptied net 2 is put back in place by the reverse operation.

The rupture member 32 is preferably a plastic collar, of the electric cable collar type such as those used for joining together bundles of electric cables.

The collar 32 is designed to withstand a calibrated force, for example, a tension of 500 N. The rupture of this member 32 by a force exceeding this threshold releases the chain 3 which, pulled by the shackles 4 passes back into the shackles 4 and the rings 12. Then, the net detaches from the cuff 1 while remaining retained by its upstream rope 21 to the link 52 of the safety cable 5. The traction exerted by the loaded net 2 pulls on the rope 21 which closes the opening upstream 2a of the net, thus preventing the accumulated waste from escaping. The loaded net 2 can then be recovered, emptied and put back in place. To empty the net, it must be detached from the safety cable 5 by the quick-opening link 52.

NOMENCLATURE OF THE MAIN ELEMENTS

100. Reference equipment

1. Cuff

1a. External part

1b. Internal part

10. Free Interval

11. Leg

11a. longitudinal branch

11b. radial branch

12. Ring

13. Infrastructure attachment device

13a

2. Fillet

2a Upstream opening

2b Downstream opening

21. Upstream peripheral rope

22. Downstream peripheral rope

221. Buckle closure and clip

23. Longitudinal rope

3. Device Link/Chain

3a, 3b Chain ends

31. Attachment point

32. Rupture body

4. Shackle

41. Nut

5. Safety cable

51. Lashing point

52. Quick release link

Om. Masonry work

THAT. Channeling / Outlet

Claims (8)

Equipment for retaining macro-waste (100) transported by rainwater, installed at the outlet of a pipe (CA) at the arrival of the flow of loaded water and comprising:
- a sleeve (1) installed in the outlet of the pipe (CA) and protruding from it to fix a net (2) intended to retain macro-waste,
equipment (100) characterized in that
A. the sleeve (1) has an internal part (1a) coming into the pipe (CA) and an external part (1b) emerging from the latter and provided with lugs (11) distributed around the periphery to come against the face of the pipeline (CA) to be fixed there by fastening members (13b) retaining the lugs (11) against the face of the outlet of the pipeline (CA), the lugs (11) provided with rings (12),
B. the net (2) has an upstream opening (2a) whose edge is provided with a peripheral rope (21) at the edge of the upstream opening, leaving the rope (21) accessible at least partially on the periphery,
C. shackles (4) distributed around the periphery of the upstream opening (2a) of the net (2) are crossed by the upstream peripheral rope (21),
D. a peripheral link (3) having two ends (3a, 3b), and integrally connected to a point of the cuff (31), passes through the rings (12) and through the pins (4), and
E. a breaking member (32) connects the two ends (3a, 3b) of the peripheral link (3) this breaking member having a breaking strength threshold. Equipment (100) according to claim 1,
characterized in that it comprises
a safety cable (5) connected at one end to a tie-down point (51) of the infrastructure (OM) and at the other end (52) to the upstream rope (21). Equipment (100) according to claim 1,
characterized in that
the sleeve (1) is split longitudinally and fixed to the outlet of the pipe (CA) by radial fixing members (13a) engaged through the internal part (13a) of the sleeve (1) in the wall of the pipe and attachment members (13b) connecting the lugs (11) to the face of the pipe (CA). Equipment (100) according to claim 3,
characterized in that
the legs (11) are two-legged bracket legs (11a, 11b), the longitudinal leg (11a) of which is fixed radially to the sleeve (1) and the radial leg (11b) is applied against the face of the pipe (CA) by being fixed thereto by screws. Equipment according to claim 1,
characterized in that
the rings (12) are welded to the legs (11). Equipment (100) according to claim 1,
characterized in that
the rupture member (32) is a plastic collar intended to resist forces below a threshold. Equipment (100) according to claim 1,
characterized in that
the rupture member (32) is a plastic collar designed to resist a calibrated force and whose rupture is caused by a force exceeding this threshold. Equipment (100) according to claim 1,
characterized in that
the peripheral link (3) is a chain (3) having two ends (3a, 3b).