EP0674057A1 - Device for automatic cleaning of sewage pipes - Google Patents

Device for automatic cleaning of sewage pipes Download PDF

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Publication number
EP0674057A1
EP0674057A1 EP93420330A EP93420330A EP0674057A1 EP 0674057 A1 EP0674057 A1 EP 0674057A1 EP 93420330 A EP93420330 A EP 93420330A EP 93420330 A EP93420330 A EP 93420330A EP 0674057 A1 EP0674057 A1 EP 0674057A1
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EP
European Patent Office
Prior art keywords
valve
effluents
duct
flap
wings
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP93420330A
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German (de)
French (fr)
Inventor
Bernard Sikora
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Individual
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Individual
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Publication date
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Priority to EP93420330A priority Critical patent/EP0674057A1/en
Publication of EP0674057A1 publication Critical patent/EP0674057A1/en
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    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F9/00Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing
    • E03F9/007Devices providing a flushing surge
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F7/00Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
    • E03F7/12Installations enabling inspection personnel to drive along sewer canals
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F9/00Arrangements or fixed installations methods or devices for cleaning or clearing sewer pipes, e.g. by flushing

Definitions

  • the present invention relates to an automatic cleaning device for sewerage networks.
  • the present invention aims to remedy these drawbacks by providing a cleaning device operating autonomously and without assistance, which can overcome without external intervention the various obstacles equipping the sewerage networks and which can displace a large volume of cuttings.
  • the device In practice, the device is placed on the raft of the cleaning pipe, upstream of the cuttings. In the absence of effluents, the valve is normally in the vertical position, that is to say closed. Thanks to the closed valve, the device obstructs the lower part of the cleaning duct and, therefore, creates a shutdown and storage of effluents upstream.
  • the device receives a thrust which tends to make it move forward.
  • the scraper takes care of the cuttings when it encounters them, which slows or stops the progression of the device.
  • the effluents continue to rise upstream of the valve until the latter pivots around its horizontal axis and releases the effluents. It thus generates a flood wave which displaces the cuttings deposited downstream of the device.
  • the drop in the level of the effluents allows the valve to be closed, which is ballasted at its part located below its pivot axis. The aircraft, cleared of this cuttings, can start to move again.
  • the device comprises two longitudinal walls arranged laterally and connected to the vertical uprights of the chassis comprising the valve and two pairs of lateral wings articulated around a vertical axis, one of which is fixed substantially at the height of the valve and of which l 'other is fixed to the rear of the chassis, upstream side, and at a distance from it greater than the width of the various lateral obstacles that the device is likely to encounter in a conduit.
  • the free outer edge of the wings is capable of coming into contact with the side wall of the duct and the wings are returned to this contact position by elastic means or under the effect of the thrust of the waters.
  • the lateral wings of the first downstream pair are capable of being erased by pivoting when they meet with an obstacle disposed laterally in the duct, such as a ladder.
  • the rear wings, the longitudinal walls and the transverse wall then retain the effluents. A once the obstacle has been overcome, the front wings resume their sealing position while the rear wings pass beyond the obstacle.
  • the apparatus also comprises a bottom retaining the effluents during its passage over sand pits.
  • the device is equipped with wheels and / or pads fixed to the front and to the rear of the chassis, to allow its guidance.
  • valve is advantageously mounted so as to be able to escape beyond a certain effluent thrust threshold or when meeting a stop placed for this purpose in the conduit.
  • the device is therefore taken out of service, either in the event of excessively large volumes of effluent, which could damage it, or at the place where said stopper is placed.
  • Figures 1 and 2 show an apparatus 1 for automatic cleaning of sewerage networks.
  • Figures 3 to 6 show different phases of the operating cycle of the device 1 .
  • valve 6 is normally in the vertical position, that is to say closed. Thanks to its transverse wall 5 and to its closed valve 6 , the device 1 obstructs the lower part of the curing duct and, as a result, creates and stores effluents upstream of itself (FIG. 3).
  • the device 1 receives a thrust which tends to make it advance.
  • the scraper 3 takes charge of the cuttings 15 when it encounters them, which slows down or stops the progression of the apparatus 1 (FIG. 4).
  • the effluents continue to rise along its transverse wall 5 until the valve 6 , placed at the front, pivots about its horizontal axis and releases the effluents. It thus generates a flood wave which displaces the cuttings deposited downstream of the apparatus 1 (FIG. 5).
  • the drop in the level of the effluents allows the closure of the valve 6 , which is ballasted at the level of its part located below its pivot axis.
  • the device 1 released from these cuttings 15 , can start to advance again (FIG. 6).
  • Figures 8 to 11 show the device seen from above, during the crossing of various obstacles, namely a niche 20 ( Figures 8 and 9), a pit 21 for the deposit of transported cuttings ( Figures 10 and 11) and a lateral ladder 22 ( Figures 10 and 11).
  • the lateral wings 9 of the downstream pair unfold at the level of the niche or are capable of being erased by pivoting when they meet the ladder 22 .
  • the volume of effluents located between the longitudinal walls 7 and the side wall of the duct can then escape, but the rear wings 10 , the longitudinal walls 7 and the transverse wall 5 retain the effluents.
  • the front wings 9 resume their sealing position under the effect of the above-mentioned elastic means or the thrust of the waters, while the rear wings 10 pass beyond the obstacle 20 , 22 .
  • the bottom 8 makes it possible, similarly, to prevent the flow of effluents on either side of the transverse wall 5 , when the device 1 passes over the sand pit 21 (FIGS. 10 and 11).
  • FIGS. 12 and 13 represent a system allowing the valve 6 to escape beyond a certain effluent thrust threshold.
  • the axis of articulation of the valve 6 is constituted by two fingers 25 , 26 .
  • the finger 25 has a T shape and is pivotally mounted relative to the transverse wall 5 around a vertical axis.
  • the end of the finger 26 is engaged in a housing delimited, upstream, by the wall 5 and, downstream, by an inclined wall, forming a ramp, of a stop 29 .
  • the stop 29 is movable along a screw 30 allowing its mounting on the wall 5 , which comprises a spring 31 engaged on it, coming to bear against the stop 29 on the one hand, and against a nut 32 on the other hand .
  • the stop 29 allows the end of the finger 26 to be retained against the wall 5 up to a certain thrust threshold for the effluents. Beyond this thrust, the finger 26 escapes from its housing and the valve 6 pivots, which frees the passage of the effluents.
  • the nut 32 makes it possible to adjust the thrust threshold beyond which the valve 6 is released.
  • a bent finger 33 makes it possible, by pressing against the wall 5 , to limit the pivoting of the valve 6 .
  • FIG. 14 shows an alternative embodiment of this system, allowing commissioning of the valve 6 not only in the event of a thrust of the effluents beyond a certain threshold, but also by encountering the device 2 with a stop 40 , provided for this purpose in the conduit.
  • This system comprises a pivoting assembly 41 around an axis carried by a support 42 .
  • the pivoting part 41 comprises a notch to delimit the housing for receiving the axis 26 and a finger 43 located opposite the stop 40 .
  • a helical spring 44 supported by a console 45 , normally maintains the pivoting part 41 in the position shown in FIG. 14. When the finger 43 meets the stop 40 , the part 41 pivots, which releases the finger 26 from its housing.
  • FIG. 15 represents a system of superimposed valves 6 making it possible, while keeping valves of small dimensions, to store a greater height of water.
  • the upper valve comes to rest, upstream side, against the upper part of the lower valve.
  • a seal 50 is fixed on the upper valve and rests on the lower valve.
  • FIG. 16 represents a valve 6 comprising means, such as stops for stabilizing it in a position of slight opening, allowing the effluents to pass through the gap 55 delimited between it and the bottom wall 51 . Thanks to this gap, the small transit flow in the sewerage networks can pass beyond the valve 6 . During a more substantial water supply, the valve pivots and comes to bear against the lower wall 51 . It works, then like the valve 6 described above.
  • the valve can also include means making it possible to provide a delay in closing. As shown, it may be a tank 52 open at the top, fixed to the top end of the valve 6 . This reservoir 52 , when filled with effluents, increases the weight of the upper part of the valve and delays the moment to from which it comes to close. Drain holes 53 allow this tank 52 to be emptied slowly.
  • FIG. 17 shows another alternative embodiment of the invention, in which walls 54 are provided on the upper part of the valve, so that the latter retains the stored water for a longer time at the start of the tilting.
  • a flexible flap 56 is fixed to the bottom of the valve 6 and is pressed against the lower wall 51 under the effect of the thrust of the effluents. This results in resistance to opening and greater filling upstream of the device.
  • Figures 18 and 19 show another alternative embodiment of the valve 6 which has the advantage of closing earlier in time while it is still covered with effluents. Indeed, with the valve 6 as described above, the closure takes place when the level of the effluents reaches the height of the pivot axis. However, the real efficiency of the mass of water released comes at the start of the flow. At a certain level of emptying, the released water is no longer effective in removing the cuttings and is therefore lost.
  • valve 6 shown in Figures 18 and 19, overcomes this drawback.
  • the valve 6 is articulated around an axis located approximately 2 / 5ths of the height of the valve and is surmounted by a flap 57 , which can pivot downstream and covering the upper part of the valve 6 over a height representing substantially 1 / 5th of it.
  • the valve 6 lightly ballasted at the bottom, is normally in the vertical position. It is kept in this position until the effluent level reaches flap 57 . The latter and the valve 6 then tilt completely to release the effluents.
  • valve 6 returns to the vertical position earlier than the previously described valves, which allows faster filling of the upstream part of the device and, consequently, a higher frequency of emptying of the effluents.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sewage (AREA)

Abstract

A chassis (2), with wheels (11), has a front side scraper (3) located near the bottom of the pipe. A transverse flap (6), able to obstruct the lower part of the pipe upstream of the scraper, is pivoted about a horizontal axle and weighted in its lower part. The flap can pivot between a vertical position, where it retains the effluent, and an inclined position. It is automatically inclined, immediately the effluents pass a certain level above its pivoting axle. The effluents are then released and generate a wave of untreated effluent which displaces the debris located downstream of the apparatus. Two longitudinal walls (7) connected by uprights (5) contain the flap. Two pairs of lateral webs (9,10) are pivoted about a vertical axis at the height of the flap. One web is fixed to the rear of the frame front side, at a distance greater than the width of different obstacles which the apparatus encounters in the pipe. The free edge of the webs are held by a spring in contact with the pipe side wall.

Description

La présente invention a pour objet un appareil de curage automatique de réseaux d'assainissement.The present invention relates to an automatic cleaning device for sewerage networks.

Le curage des réseaux d'assainissement est nécessaire afin d'éliminer les dépôts, notamment de sable, dans leur fond et de conserver ainsi aux ouvrages toutes leurs capacités d'évacuation des effluents.The cleaning up of sewerage networks is necessary in order to eliminate deposits, in particular of sand, in their bottom and thus to preserve at works all their capacities of evacuation of effluents.

Pour cette tâche, il est actuellement courant d'employer soit du personnel, afin de rassembler et d'évacuer manuellement les déblais, soit des engins de curage hydraulique.For this task, it is currently common to employ either personnel, in order to collect and evacuate the cuttings manually, or hydraulic cleaning machines.

Dans le premier cas, les opérations de curage sont longues, difficiles, et particulièrement fastidieuses pour les personnes employées à cette tâche.In the first case, the cleaning operations are long, difficult, and particularly tedious for the people employed for this task.

Dans le deuxième cas, les engins présentent l'inconvénient de nécessiter une énergie externe pour fonctionner, ce qui rend leur emploi guère pratique et limite leur rayon d'action. Ces engins ont, de plus, une efficacité assez relative au niveau de leurs capacités de déplacement de volume de dépôts importants.In the second case, the machines have the drawback of requiring external energy to operate, which makes their use hardly practical and limits their range of action. These machines have, moreover, a fairly relative efficiency in terms of their capacity for displacing the volume of large deposits.

En outre, en fonctionnement, ces engins ne sont pas capables de passer seuls sans disfonctionnement, divers obstacles se trouvant dans les réseaux, tels que échelles, virages, jonctions, branchements d'accès, ou fosses à sable.In addition, in operation, these machines are not able to pass alone without malfunction, various obstacles being in the networks, such as ladders, turns, junctions, access branches, or sand pits.

La présente invention vise à remédier à ces inconvénients en fournissant un appareil de curage fonctionnant de manière autonome et sans assistance, pouvant franchir sans intervention extérieure les différents obstacles équipant les réseaux d'assainissement et pouvant déplacer un volume de déblais importants.The present invention aims to remedy these drawbacks by providing a cleaning device operating autonomously and without assistance, which can overcome without external intervention the various obstacles equipping the sewerage networks and which can displace a large volume of cuttings.

A cette fin, l'appareil qu'elle concerne comprend un châssis comportant :

  • un râcleur côté aval situé à proximité du fond du conduit à curer, et
  • un volet transversal pouvant obturer la partie inférieure du conduit en amont du râcleur, monté pivotant autour d'un axe horizontal et lesté en partie inférieure, ce volet, ci-après, dénommé "vanne" étant apte à retenir les effluents avec une relative étanchéité et à pivoter entre une position verticale, où il retient les effluents, et une position inclinée, dans laquelle il est amené automatiquement dès que les effluents dépassent un certain niveau par rapport à son axe de pivotement, où il libère lesdits effluents de manière à générer une onde de crue qui déplace les déblais situés en aval de l'appareil.
To this end, the apparatus which it relates comprises a chassis comprising:
  • a scraper on the downstream side located near the bottom of the duct to be cleaned, and
  • a transverse flap capable of closing off the lower part of the duct upstream of the scraper, pivotally mounted about a horizontal axis and ballasted in the lower part, this flap, hereinafter, called "valve" being able to retain the effluents with a relative seal and pivot between a vertical position, where it retains the effluents, and an inclined position, in which it is brought automatically as soon as the effluents exceed a certain level relative to its pivot axis, where it releases said effluents so as to generate a flood wave which displaces the cuttings located downstream of the device.

En pratique, l'appareil est placé sur le radier du conduit à curer, en amont des déblais. En l'absence d'effluents, la vanne est normalement en position verticale, c'est-à-dire fermée. Grâce à la vanne fermée, l'appareil obstrue la partie inférieure du conduit à curer et, de ce fait, crée un arrêt et un stockage des effluents en amont.In practice, the device is placed on the raft of the cleaning pipe, upstream of the cuttings. In the absence of effluents, the valve is normally in the vertical position, that is to say closed. Thanks to the closed valve, the device obstructs the lower part of the cleaning duct and, therefore, creates a shutdown and storage of effluents upstream.

Au fur et à mesure du remplissage par les effluents de la partie amont du conduit, l'appareil reçoit une poussée qui tend à le faire avancer. Au cours de cette avancée, le racleur se charge de déblais lorsqu'il en rencontre, ce qui ralentit ou stoppe la progression de l'appareil. A partir du moment où l'appareil est stoppé, les effluents continuent de monter en amont de la vanne jusqu'à ce que celle-ci pivote autour de son axe horizontal et libère les effluents. Elle génère ainsi une onde de crue qui déplace les déblais déposés en aval de l'appareil. La baisse du niveau des effluents permet la fermeture de la vanne, qui est lestée au niveau de sa partie située en-dessous de son axe de pivotement. L'appareil, dégagé de ces déblais, peut recommencer à avancer.As the effluent fills the upstream part of the duct, the device receives a thrust which tends to make it move forward. During this advance, the scraper takes care of the cuttings when it encounters them, which slows or stops the progression of the device. From the moment the device is stopped, the effluents continue to rise upstream of the valve until the latter pivots around its horizontal axis and releases the effluents. It thus generates a flood wave which displaces the cuttings deposited downstream of the device. The drop in the level of the effluents allows the valve to be closed, which is ballasted at its part located below its pivot axis. The aircraft, cleared of this cuttings, can start to move again.

Le cycle de fonctionnement qui vient d'être décrit recommence en aval du conduit.The operating cycle which has just been described begins again downstream of the conduit.

Avantageusement, l'appareil comprend deux parois longitudinales disposées latéralement et raccordées aux montants verticaux du châssis comportant la vanne et deux paires d'ailes latérales articulées autour d'un axe vertical, dont une est fixée sensiblement à la hauteur de la vanne et dont l'autre est fixée à l'arrière du châssis, côté amont, et à une distance de celle-ci supérieure à la largeur des différents obstacles latéraux que l'appareil est susceptible de rencontrer dans un conduit. Le bord libre extérieur des ailes est apte à venir en contact avec la paroi latérale du conduit et les ailes sont rappelées dans cette position de contact par des moyens élastiques ou sous l'effet de la poussée des eaux.Advantageously, the device comprises two longitudinal walls arranged laterally and connected to the vertical uprights of the chassis comprising the valve and two pairs of lateral wings articulated around a vertical axis, one of which is fixed substantially at the height of the valve and of which l 'other is fixed to the rear of the chassis, upstream side, and at a distance from it greater than the width of the various lateral obstacles that the device is likely to encounter in a conduit. The free outer edge of the wings is capable of coming into contact with the side wall of the duct and the wings are returned to this contact position by elastic means or under the effect of the thrust of the waters.

Ainsi, les ailes latérales de la première paire aval sont aptes à s'effacer par pivotement lors de leur rencontre avec un obstacle disposé latéralement dans le conduit, tel qu'une échelle. Les ailes arrière, les parois longitudinales et la paroi transversale retiennent alors les effluents. Une fois l'obstacle dépassé, les ailes avant reprennent leur position d'étanchéité pendant que les ailes arrière passent au-delà de l'obstacle.Thus, the lateral wings of the first downstream pair are capable of being erased by pivoting when they meet with an obstacle disposed laterally in the duct, such as a ladder. The rear wings, the longitudinal walls and the transverse wall then retain the effluents. A once the obstacle has been overcome, the front wings resume their sealing position while the rear wings pass beyond the obstacle.

De préférence, l'appareil comprend également un fond retenant les effluents lors de son passage au-dessus de fosses à sable.Preferably, the apparatus also comprises a bottom retaining the effluents during its passage over sand pits.

Avantageusement, l'appareil est équipé de roues et/ou patins fixés à l'avant et à l'arrière du châssis, pour permettre son guidage.Advantageously, the device is equipped with wheels and / or pads fixed to the front and to the rear of the chassis, to allow its guidance.

En outre, la vanne est avantageusement montée de manière à pouvoir s'échapper au-delà d'un certain seuil de poussée des effluents ou lors de la rencontre d'une butée placée à cet effet dans le conduit. Une mise hors service de l'appareil est ainsi réalisée, soit en cas de volumes d'effluents trop importants, ce qui pourrait l'endommager, soit à l'endroit où est placée ladite butée.In addition, the valve is advantageously mounted so as to be able to escape beyond a certain effluent thrust threshold or when meeting a stop placed for this purpose in the conduit. The device is therefore taken out of service, either in the event of excessively large volumes of effluent, which could damage it, or at the place where said stopper is placed.

Pour sa bonne compréhension, l'invention va être à nouveau décrite ci-après, en référence au dessin schématique annexé représentant, à titre d'exemples, plusieurs formes de réalisation possibles de l'appareil qu'elle concerne.For a good understanding, the invention will be described again below, with reference to the appended diagrammatic drawing representing, by way of examples, several possible embodiments of the apparatus which it concerns.

Dans ce dessin,

  • La figure 1 est une vue de profil de cet appareil, placé dans un conduit ;
  • La figure 2 en est une vue de dessus ;
  • Les figures 3 à 6 en sont des vues d'ensemble au cours de quatre phases successives de fonctionnement ;
  • Les figures 8 à 11 en sont des vues générales, de dessus, au cours de quatre autres phases successives de fonctionnement, et
  • Les figures 12 à 19 sont des vues de différentes variantes de réalisation de cet appareil.
In this drawing,
  • Figure 1 is a side view of this device, placed in a conduit;
  • Figure 2 is a top view;
  • Figures 3 to 6 are general views during four successive phases of operation;
  • FIGS. 8 to 11 are general views thereof, from above, during four other successive phases of operation, and
  • Figures 12 to 19 are views of different alternative embodiments of this device.

Les figures 1 et 2 représentent un appareil 1 de curage automatique de réseaux d'assainissement.Figures 1 and 2 show an apparatus 1 for automatic cleaning of sewerage networks.

Cet appareil 1 comprend :

  • un châssis 2 déplaçable dans le conduit à curer ;
  • un râcleur 3 côté aval, situé à proximité du fond du conduit à curer, ce râcleur 3 étant prolongé par deux parois latérales inclinées 4 formant entonnoir, dont les extrémités libres glissent le long des parements latéraux du conduit ;
  • une paroi 5 disposée transversalement par rapport au conduit, en amont par rapport au râcleur 3, munie d'une vanne 6 montant pivotante autour d'un axe horizontal ;
  • deux parois longitudinales 7, disposées latéralement et raccordées à la paroi transversal 5 ;
  • un fond 8 ;
  • deux paires d'ailes latérales 9, 10, articulées autour d'un axe vertical, les ailes 9 de la première paire étant fixées à la hauteur de la paroi transversale 5 et celles 10 de l'autre paire étant fixées au châssis 2 en amont de cette paroi 5 et à une distance de celle-ci supérieure à la largeur des différents obstacles latéraux que l'appareil 1 est susceptible de rencontrer dans un conduit ; le bord libre extérieur des ailes 9, 10 est apte à venir en contact avec la paroi latérale du conduit et les ailes 9, 10 sont rappelées dans cette position de contact par des moyens élastiques (non représentés) ; et
  • des roues 11 de guidage latérales de l'appareil 1.
This device 1 includes:
  • a chassis 2 movable in the curing duct;
  • a scraper 3 downstream side, located near the bottom of the pipe to be cleaned, this scraper 3 being extended by two inclined side walls 4 forming a funnel, the free ends of which slide along the side walls of the pipe;
  • a wall 5 disposed transversely with respect to the duct, upstream with respect to the scraper 3 , provided with a valve 6 which pivots about a horizontal axis;
  • two longitudinal walls 7 , arranged laterally and connected to the transverse wall 5;
  • a background 8 ;
  • two pairs of lateral wings 9 , 10 , articulated around a vertical axis, the wings 9 of the first pair being fixed at the height of the transverse wall 5 and those 10 of the other pair being fixed to the frame 2 upstream from this wall 5 and at a distance from it greater than the width of the various lateral obstacles that the device 1 is likely to encounter in a conduit; the free outer edge of the wings 9 , 10 is able to come into contact with the side wall of the duct and the wings 9 , 10 are returned to this contact position by elastic means (not shown); and
  • wheels 11 for lateral guiding of the device 1 .

Les figures 3 à 6 montrent différentes phases du cycle de fonctionnement de l'appareil 1.Figures 3 to 6 show different phases of the operating cycle of the device 1 .

Celui-ci est placé sur le radier du conduit à curer, en amont des déblais 15. En l'absence d'effluents, la vanne 6 est normalement en position verticale, c'est-à-dire fermée. Grâce à sa paroi transversale 5 et à sa vanne 6 fermée, l'appareil 1 obstrue la partie inférieure du conduit à curer et, de ce fait, crée et un stockage des effluents en amont de lui-même (figure 3).This is placed on the slab of the duct to be cleaned, upstream of the cuttings 15 . In the absence of effluents, the valve 6 is normally in the vertical position, that is to say closed. Thanks to its transverse wall 5 and to its closed valve 6 , the device 1 obstructs the lower part of the curing duct and, as a result, creates and stores effluents upstream of itself (FIG. 3).

Au fur et à mesure du remplissage par les effluents de la partie amont du conduit, l'appareil 1 reçoit une poussée qui tend à le faire avancer. Au cours de cette avancée, le râcleur 3 se charge de déblais 15 lorsqu'il en rencontre, ce qui ralentit ou stoppe la progression de l'appareil 1 (figure 4). A partir du moment où l'appareil 1 est stoppé, les effluents continuent de monter le long de sa paroi transversale 5 jusqu'à ce que la vanne 6, placée à l'avant, pivote autour de son axe horizontal et libère les effluents. Elle génère ainsi une onde de crue qui déplace les déblais déposés en aval de l'appareil 1 (figure 5).As the effluent fills the upstream part of the conduit, the device 1 receives a thrust which tends to make it advance. During this advance, the scraper 3 takes charge of the cuttings 15 when it encounters them, which slows down or stops the progression of the apparatus 1 (FIG. 4). From the moment the device 1 is stopped, the effluents continue to rise along its transverse wall 5 until the valve 6 , placed at the front, pivots about its horizontal axis and releases the effluents. It thus generates a flood wave which displaces the cuttings deposited downstream of the apparatus 1 (FIG. 5).

La baisse du niveau des effluents permet la fermeture de la vanne 6, qui est lestée au niveau de sa partie située en-dessous de son axe de pivotement. L'appareil 1, dégagé de ces déblais 15, peut recommencer à avancer (figure 6).The drop in the level of the effluents allows the closure of the valve 6 , which is ballasted at the level of its part located below its pivot axis. The device 1 , released from these cuttings 15 , can start to advance again (FIG. 6).

Le cycle de fonctionnement qui vient d'être décrit recommence en aval du conduit.The operating cycle which has just been described begins again downstream of the conduit.

Les figures 8 à 11 représentent l'appareil vu de dessus, au cours du franchissement de divers obstacles, à savoir une niche 20 (figures 8 et 9), une fosse 21 pour le dépôt des déblais transportés (figures 10 et 11) et une échelle latérale 22 (figures 10 et 11).Figures 8 to 11 show the device seen from above, during the crossing of various obstacles, namely a niche 20 (Figures 8 and 9), a pit 21 for the deposit of transported cuttings (Figures 10 and 11) and a lateral ladder 22 (Figures 10 and 11).

Comme le montrent ces différents figures, les ailes latérales 9 de la paire aval se déplient au niveau de la niche ou sont aptes à s'effacer par pivotement lors de leur rencontre avec l'échelle 22. Le volume d'effluents situés entre les parois longitudinales 7 et la paroi latérale du conduit peut alors s'échapper, mais les ailes arrière 10, les parois longitudinales 7 et la paroi transversale 5 retiennent les effluents. Une fois l'obstacle 20, 22 dépassé, les ailes avant 9 reprennent leur position d'étanchéité sous l'effet des moyens élastiques précités ou de la poussée des eaux, pendant que les ailes arrière 10 passent au-delà de l'obstacle 20, 22.As these various figures show, the lateral wings 9 of the downstream pair unfold at the level of the niche or are capable of being erased by pivoting when they meet the ladder 22 . The volume of effluents located between the longitudinal walls 7 and the side wall of the duct can then escape, but the rear wings 10 , the longitudinal walls 7 and the transverse wall 5 retain the effluents. Once the obstacle 20 , 22 has been exceeded, the front wings 9 resume their sealing position under the effect of the above-mentioned elastic means or the thrust of the waters, while the rear wings 10 pass beyond the obstacle 20 , 22 .

Le fond 8 permet, de manière similaire, d'empêcher l'écoulement des effluents de part et d'autre de la paroi transversale 5, lors du passage de l'appareil 1 au-dessus de la fosse à sable 21 (figures 10 et 11).The bottom 8 makes it possible, similarly, to prevent the flow of effluents on either side of the transverse wall 5 , when the device 1 passes over the sand pit 21 (FIGS. 10 and 11).

Les figures 12 et 13 représentent un système permettant l'échappement de la vanne 6 au-delà d'un certain seuil de poussée des effluents.FIGS. 12 and 13 represent a system allowing the valve 6 to escape beyond a certain effluent thrust threshold.

L'axe d'articulation de la vanne 6 est constitué par deux doigts 25, 26. Le doigt 25 a une forme de T et est monté pivotant par rapport à la paroi transversale 5 autour d'un axe vertical. L'extrémité du doigt 26 est engagée dans un logement délimité, en amont, par la paroi 5 et, en aval, par une paroi inclinée, formant rampe, d'une butée 29. La butée 29 est mobile le long d'une vis 30 permettant son montage sur la paroi 5, qui comprend un ressort 31 engagé sur elle, venant en appui contre la butée 29 d'une part, et contre un écrou 32 d'autre part.The axis of articulation of the valve 6 is constituted by two fingers 25 , 26 . The finger 25 has a T shape and is pivotally mounted relative to the transverse wall 5 around a vertical axis. The end of the finger 26 is engaged in a housing delimited, upstream, by the wall 5 and, downstream, by an inclined wall, forming a ramp, of a stop 29 . The stop 29 is movable along a screw 30 allowing its mounting on the wall 5 , which comprises a spring 31 engaged on it, coming to bear against the stop 29 on the one hand, and against a nut 32 on the other hand .

La butée 29 permet de retenir l'extrémité du doigt 26 contre la paroi 5 jusqu'à un certain seuil de poussée des effluents. Au-delà de cette poussée, le doigt 26 s'échappe de son logement et la vanne 6 pivote, ce qui libère le passage des effluents.The stop 29 allows the end of the finger 26 to be retained against the wall 5 up to a certain thrust threshold for the effluents. Beyond this thrust, the finger 26 escapes from its housing and the valve 6 pivots, which frees the passage of the effluents.

L'écrou 32 permet de régler le seuil de poussée au-delà duquel la vanne 6 est libérée.The nut 32 makes it possible to adjust the thrust threshold beyond which the valve 6 is released.

Un doigt coudé 33 permet, en venant appuyer contre la paroi 5, de limiter le pivotement de la vanne 6.A bent finger 33 makes it possible, by pressing against the wall 5 , to limit the pivoting of the valve 6 .

La figure 14 présente une variante de réalisation de ce système, permettant une mise en service de la vanne 6 non seulement en cas d'une poussée des effluents au-delà d'un certain seuil, mais également par rencontre de l'appareil 2 avec une butée 40, prévue à cet effet dans le conduit. Ce système comprend un ensemble pivotant 41 autour d'un axe porté par un support 42. La pièce pivotante 41 comprend une entaille pour délimiter le logement de réception de l'axe 26 et un doigt 43 situé en face de la butée 40. Un ressort hélicoïdal 44, supporté par une console 45, maintient normalement la pièce pivotante 41 dans la position représentée à la figure 14. Lorsque le doigt 43 rencontre la butée 40, la pièce 41 pivote, ce qui libère le doigt 26 de son logement.FIG. 14 shows an alternative embodiment of this system, allowing commissioning of the valve 6 not only in the event of a thrust of the effluents beyond a certain threshold, but also by encountering the device 2 with a stop 40 , provided for this purpose in the conduit. This system comprises a pivoting assembly 41 around an axis carried by a support 42 . The pivoting part 41 comprises a notch to delimit the housing for receiving the axis 26 and a finger 43 located opposite the stop 40 . A helical spring 44 , supported by a console 45 , normally maintains the pivoting part 41 in the position shown in FIG. 14. When the finger 43 meets the stop 40 , the part 41 pivots, which releases the finger 26 from its housing.

La figure 15 représente un système de vannes 6 superposées permettant, tout en gardant des vannes de petites dimensions, de stocker une plus grande hauteur d'eau. Pour cela, la vanne supérieure vient s'appuyer, côté amont, contre la partie supérieure de la vanne inférieure. Pour assurer l'étanchéité entre les deux vannes, un joint 50 est fixé sur la vanne supérieure et prend appui sur la vanne inférieure.FIG. 15 represents a system of superimposed valves 6 making it possible, while keeping valves of small dimensions, to store a greater height of water. For this, the upper valve comes to rest, upstream side, against the upper part of the lower valve. To seal between the two valves, a seal 50 is fixed on the upper valve and rests on the lower valve.

La figure 16 représente une vanne 6 comprenant des moyens, tels que des butées pour la stabiliser dans une position de légère ouverture, permettant de laisser passer les effluents par l'interstice 55 délimité entre elle et la paroi inférieure 51. Grâce à cet interstice, le petit débit de transit dans les réseaux d'assainissement peut passer au-delà de la vanne 6. Lors d'une arrivée d'eau plus conséquente, la vanne pivote et vient en appui contre la paroi inférieure 51. Elle fonctionne, alors comme la vanne 6 décrite plus haut.FIG. 16 represents a valve 6 comprising means, such as stops for stabilizing it in a position of slight opening, allowing the effluents to pass through the gap 55 delimited between it and the bottom wall 51 . Thanks to this gap, the small transit flow in the sewerage networks can pass beyond the valve 6 . During a more substantial water supply, the valve pivots and comes to bear against the lower wall 51 . It works, then like the valve 6 described above.

La vanne peut également comprendre des moyens permettant d'aménager un retard à la fermeture. Il peut s'agir, comme représenté, d'un réservoir 52 ouvert en partie supérieure, fixé à l'extrémité supérieure de la vanne 6. Ce réservoir 52, lorsqu'il est rempli par les effluents, augmente le poids de la partie supérieure de la vanne et retarde le moment à compter duquel elle vient se refermer. Des trous de vidange 53 permettent un vidage lent de ce réservoir 52.The valve can also include means making it possible to provide a delay in closing. As shown, it may be a tank 52 open at the top, fixed to the top end of the valve 6 . This reservoir 52 , when filled with effluents, increases the weight of the upper part of the valve and delays the moment to from which it comes to close. Drain holes 53 allow this tank 52 to be emptied slowly.

La figure 17 représente une autre variante de réalisation de l'invention, dans laquelle des parois 54 sont prévues sur la partie supérieure de la vanne, afin que celle-ci conserve plus longtemps l'eau stockée au début du basculement.FIG. 17 shows another alternative embodiment of the invention, in which walls 54 are provided on the upper part of the valve, so that the latter retains the stored water for a longer time at the start of the tilting.

Afin de retarder l'ouverture et de permettre un plus gros stockage et un meilleur basculement, une bavette souple 56 est fixée au bas de la vanne 6 et vient se plaquer sur la paroi inférieure 51 sous l'effet de la poussée des effluents. Il s'en suit une résistance à l'ouverture et un remplissage plus important en amont de l'appareil.In order to delay opening and allow greater storage and better tilting, a flexible flap 56 is fixed to the bottom of the valve 6 and is pressed against the lower wall 51 under the effect of the thrust of the effluents. This results in resistance to opening and greater filling upstream of the device.

Enfin, les figures 18 et 19 représentent une autre variante de réalisation de la vanne 6 qui présente l'avantage de se refermer plus tôt dans le temps alors qu'elle est encore recouverte des effluents. En effet, avec la vanne 6 telle que décrite plus haut, la fermeture s'effectue quand le niveau des effluents parvient à la hauteur de l'axe de pivotement. Or, la réelle efficacité de la masse d'eau libérée intervient au début de l'écoulement. A un certain niveau de vidange, les eaux libérées n'ont plus aucune efficacité pour chasser les déblais et sont, par conséquent, perdues.Finally, Figures 18 and 19 show another alternative embodiment of the valve 6 which has the advantage of closing earlier in time while it is still covered with effluents. Indeed, with the valve 6 as described above, the closure takes place when the level of the effluents reaches the height of the pivot axis. However, the real efficiency of the mass of water released comes at the start of the flow. At a certain level of emptying, the released water is no longer effective in removing the cuttings and is therefore lost.

La vanne 6, représentée aux figures 18 et 19, permet de remédier à cet inconvénient.The valve 6 , shown in Figures 18 and 19, overcomes this drawback.

La vanne 6, selon cette variante, est articulée autour d'un axe situé sensiblement aux 2/5èmes de la hauteur de la vanne et est surmontée par un volet 57, pouvant pivoter vers l'aval et recouvrant la partie supérieure de la vanne 6 sur une hauteur représentant sensiblement 1/5ème de celle-ci.The valve 6 , according to this variant, is articulated around an axis located approximately 2 / 5ths of the height of the valve and is surmounted by a flap 57 , which can pivot downstream and covering the upper part of the valve 6 over a height representing substantially 1 / 5th of it.

La vanne 6, légèrement lestée en partie inférieure, est normalement en position verticale. Elle est maintenue dans cette position jusqu'à ce que le niveau des effluents atteigne le volet 57. Ce dernier et la vanne 6 basculent alors complètement pour libérer les effluents.The valve 6 , lightly ballasted at the bottom, is normally in the vertical position. It is kept in this position until the effluent level reaches flap 57 . The latter and the valve 6 then tilt completely to release the effluents.

La vanne 6 selon cette variante revient en position verticale plus tôt que les vannes précédemment décrites, ce qui permet un remplissage plus rapide de la partie amont du dispositif et, par conséquent, une fréquence de vidange des effluents plus importante.The valve 6 according to this variant returns to the vertical position earlier than the previously described valves, which allows faster filling of the upstream part of the device and, consequently, a higher frequency of emptying of the effluents.

Claims (10)

Appareil de curage automatique de réseaux d'assainissement, caractérisé en ce qu'il comprend : - un châssis (2) déplaçable dans le conduit à curer, comportant - un râcleur (3) côté aval situé à proximité du fond du conduit à curer, et - un volet transversal (6) pouvant obstruer la partie inférieure du conduit en amont par rapport au râcleur (3), monté pivotant autour d'un axe horizontal et lesté en partie inférieure, ce volet (6), ci-après, dénommé "vanne" étant apte à retenir les effluents avec une relative étanchéité et à pivoter entre une position verticale, où il retient les effluents, et une position inclinée, dans laquelle il est amené automatiquement dès que les effluents dépassent un certain niveau par rapport à son axe de pivotement, où il libère lesdits effluents de manière à générer une onde de crue qui déplace les déblais situés en aval de l'appareil. Automatic cleaning device for sewerage networks, characterized in that it comprises: - a frame (2) movable in the cleaning duct, comprising - a scraper (3) on the downstream side located near the bottom of the duct to be cleaned, and - a transverse flap (6) capable of obstructing the lower part of the duct upstream relative to the scraper (3), pivotally mounted around a horizontal axis and ballasted in the lower part, this flap (6), hereinafter referred to as " valve "being able to retain the effluents with a relative seal and to pivot between a vertical position, where it retains the effluents, and an inclined position, in which it is brought automatically as soon as the effluents exceed a certain level relative to its axis pivot, where it releases said effluents so as to generate a flood wave which moves the cuttings located downstream of the device. Appareil selon la revendication 1, caractérisé en ce qu'il comprend deux parois longitudinales (7) disposées latéralement et raccordées aux montants verticaux (5) comportant la vanne (6), et deux paires (9, 10) d'ailes latérales articulées autour d'un axe vertical, dont une est fixée sensiblement à la hauteur de la vanne (6) et dont l'autre est fixée à l'arrière du châssis (2) côté amont, et à une distance de celle-ci supérieure à la largeur des différents obstacles latéraux (20, 22) que l'appareil (1) est susceptible de rencontrer dans un conduit, le bord libre extérieur des ailes (9, 10) étant apte à venir en contact avec la paroi latérale du conduit et les ailes (9, 10) étant rappelées dans cette position de contact par des moyens élastiques ou sous l'effet de la poussée des eaux.Apparatus according to claim 1, characterized in that it comprises two longitudinal walls (7) arranged laterally and connected to the vertical uprights (5) comprising the valve (6), and two pairs (9, 10) of lateral wings articulated around a vertical axis, one of which is fixed substantially at the height of the valve (6) and the other of which is fixed to the rear of the frame (2) on the upstream side, and at a distance from the latter greater than the width of the various lateral obstacles (20, 22) that the device (1) is likely to encounter in a duct, the free outer edge of the wings (9, 10) being able to come into contact with the lateral wall of the duct and the wings (9, 10) being returned to this contact position by elastic means or under the effect of the thrust of the waters. Appareil selon la revendication 1 ou la revendication 2, caractérisé en ce qu'il comprend un fond (8) retenant les effluents lors de son passage au-dessus de fosses à sable (21).Apparatus according to claim 1 or claim 2, characterized in that it comprises a bottom (8) retaining the effluents during its passage over sand pits (21). Appareil selon l'une des revendications 1 à 3, caractérisé en ce qu'il est équipé de roues (11) et/ou patins fixés à l'avant et à l'arrière du châssis (2), pour permettre son guidage.Apparatus according to one of claims 1 to 3, characterized in that it is equipped with wheels (11) and / or pads fixed to the front and to the rear of the chassis (2), to allow its guidance. Appareil selon l'une des revendications 1 à 4, caractérisé en ce que la vanne 6 est montée de manière à pouvoir s'échapper au-delà d'un certain seuil de poussée des effluents ou lors de la rencontre d'une butée (40) placée à cet effet dans le conduit.Apparatus according to one of claims 1 to 4, characterized in that the valve 6 is mounted so as to be able to escape beyond a certain threshold of thrust from the effluents or when a stop (40 ) placed for this purpose in the duct. Appareil selon l'une des revendications 1 à 5, caractérisé en ce qu'il comprend au moins deux vannes (6) superposées venant partiellement en recouvrement l'une de l'autre.Apparatus according to one of claims 1 to 5, characterized in that it comprises at least two superposed valves (6) partially overlapping one another. Appareil selon l'une des revendications 1 à 6, caractérisé en ce que la vanne (6) comprend des moyens permettant de la stabiliser dans une position de légère ouverture.Apparatus according to one of claims 1 to 6, characterized in that the valve (6) comprises means making it possible to stabilize it in a position of slight opening. Vanne selon l'une des revendications 1 à 7, caractérisée en ce qu'elle comprend des moyens (52, 53) permettant de retarder sa fermeture.Valve according to one of claims 1 to 7, characterized in that it comprises means (52, 53) for delaying its closing. Appareil selon l'une des revendications 1 à 8, caractérisé en ce que sa vanne (6) comprend des parois (54) au niveau de sa partie supérieure, permettant de conserver l'eau stockée au début du basculement.Apparatus according to one of claims 1 to 8, characterized in that its valve (6) comprises walls (54) at its upper part, making it possible to conserve the water stored at the start of the tilting. Appareil selon l'une des revendications 1 à 9, caractérisé en ce que sa vanne (6) est articulée autour d'un axe situé sensiblement aux 2/5èmes de sa hauteur et est surmontée par un volet (57) pouvant pivoter vers l'aval, recouvrant la partie supérieure de la vanne (6) sur une hauteur représentant sensiblement 1/5ème de celle-ci, la vanne (6) étant légèrement lestée en partie inférieure.Apparatus according to one of claims 1 to 9, characterized in that its valve (6) is articulated around an axis located substantially at 2/5 of its height and is surmounted by a flap (57) which can pivot towards the downstream, covering the upper part of the valve (6) over a height representing substantially 1 / 5th of it, the valve (6) being lightly ballasted in the lower part.
EP93420330A 1993-07-29 1993-07-29 Device for automatic cleaning of sewage pipes Withdrawn EP0674057A1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2804702A1 (en) * 2000-02-07 2001-08-10 Bernard Sikora Drain flushing unit comprises frame with pivoted valve having upper and lower sections and rotated by pressure of effluent flow
DE10041021A1 (en) * 2000-08-22 2002-03-07 Emilia Steinicke Cleaning process for drain channel involves initially retaining sufficient water on inlet side to produce rapid wave when cross section of channel is filled

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE700092C (en) * 1936-09-15 1940-12-12 Fritz Seidel Mobile flushing shield
FR1063005A (en) * 1951-01-15 1954-04-29 Neyrpic Ets Cleaning device for ducts such as canals
DE3045166A1 (en) * 1980-12-01 1982-06-09 Ingo 2000 Hamburg Hirschkorn Mechanism for removing deposits in sewers - has floats hinged to flushing hole flap, for widening as level rises
FR2643971A1 (en) * 1989-03-02 1990-09-07 Sikora Bernard Self-cleaning cyclic gating with decanting
FR2669060A1 (en) * 1990-11-08 1992-05-15 Sikora Bernard Self-contained method and device for cleaning sewer systems which can be inspected

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE700092C (en) * 1936-09-15 1940-12-12 Fritz Seidel Mobile flushing shield
FR1063005A (en) * 1951-01-15 1954-04-29 Neyrpic Ets Cleaning device for ducts such as canals
DE3045166A1 (en) * 1980-12-01 1982-06-09 Ingo 2000 Hamburg Hirschkorn Mechanism for removing deposits in sewers - has floats hinged to flushing hole flap, for widening as level rises
FR2643971A1 (en) * 1989-03-02 1990-09-07 Sikora Bernard Self-cleaning cyclic gating with decanting
FR2669060A1 (en) * 1990-11-08 1992-05-15 Sikora Bernard Self-contained method and device for cleaning sewer systems which can be inspected

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2804702A1 (en) * 2000-02-07 2001-08-10 Bernard Sikora Drain flushing unit comprises frame with pivoted valve having upper and lower sections and rotated by pressure of effluent flow
DE10041021A1 (en) * 2000-08-22 2002-03-07 Emilia Steinicke Cleaning process for drain channel involves initially retaining sufficient water on inlet side to produce rapid wave when cross section of channel is filled

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