EP0387759B1 - Véhicule pour le nettoyage de canalisations d'égouts - Google Patents

Véhicule pour le nettoyage de canalisations d'égouts Download PDF

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Publication number
EP0387759B1
EP0387759B1 EP90104649A EP90104649A EP0387759B1 EP 0387759 B1 EP0387759 B1 EP 0387759B1 EP 90104649 A EP90104649 A EP 90104649A EP 90104649 A EP90104649 A EP 90104649A EP 0387759 B1 EP0387759 B1 EP 0387759B1
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EP
European Patent Office
Prior art keywords
compartment
pipe
filter
sludge
water
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.)
Expired - Lifetime
Application number
EP90104649A
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German (de)
English (en)
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EP0387759A2 (fr
EP0387759A3 (en
Inventor
Peter Assmann
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Individual
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Individual
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Publication of EP0387759A2 publication Critical patent/EP0387759A2/fr
Publication of EP0387759A3 publication Critical patent/EP0387759A3/de
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Publication of EP0387759B1 publication Critical patent/EP0387759B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
    • E03F7/10—Wheeled apparatus for emptying sewers or cesspools
    • E03F7/103—Wheeled apparatus for emptying sewers or cesspools with a tank featuring one or more partition walls
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F7/00—Other installations or implements for operating sewer systems, e.g. for preventing or indicating stoppage; Emptying cesspools
    • E03F7/10—Wheeled apparatus for emptying sewers or cesspools

Definitions

  • the invention relates to a sewer cleaning vehicle with a sludge compartment to be closed by a pivotable tailgate and with a service water compartment, both of which are connected to one another in terms of pipes.
  • a first filter for coarse screening of the sludge water present in this compartment and drawn in from outside the vehicle through a sludge hose.
  • a second filter in the form of a rotating sieve drum provided with wipers.
  • a high-pressure pump is installed in the other line leading away from the service water compartment.
  • the sludge water present there can be sucked off into the sludge water compartment, which is under vacuum.
  • This sludge water is pumped into another process water compartment, where it flows through several filter systems.
  • the process water is therefore relatively clean in relation to the sludge water, so that it cannot be disposed of, but can be reused.
  • This service water can be sent into a flushing hose with a high-pressure pump, which is provided with a nozzle head and is also lowered into the sewer to be cleaned. With the help of the pressure jet emerging from the nozzle head, the solid sludge present in the sewer is loosened and drawn to the sewer shaft so that it can be sucked off through the sludge hose.
  • Such a sewer cleaning vehicle is known from DE-OS 3140200.
  • Mud water compartment and process water compartment are available in this vehicle in a common tank, one behind the other.
  • the common partition between the two compartments is designed in the form of a piston which is longitudinally displaceable in the boiler, so that by displacing this piston the one compartment can be made smaller in volume and the other compartment correspondingly larger.
  • In the process water compartment there is a rotating sieve drum provided with wipers for fine screening, over the lateral surface of which the feed line leading from the mud water compartment into the process water compartment ends. The purified water accumulating inside this sieve drum is removed from the process water compartment and led to the high-pressure pump.
  • an intermediate wall designed in the form of a coarse sieve is installed in the sludge water compartment, through which the mouth opening is to be kept free from the sludge and other contaminants sinking into the sludge compartment.
  • water can only be drawn from the service water compartment through the sieve drum.
  • the delivery rate depends on the performance of this filter.
  • An additional removal directly from the service water compartment is not provided and also does not make sense, since the dirt stripped from the outer surface of the screen drum by its wipers is present in the water accumulated in the service water compartment.
  • the water in the process water compartment does not form a real water reservoir for charging the high pressure pump.
  • the invention is based on the object of specifying a sewer cleaning vehicle of the type mentioned at the outset which does not have the disadvantages known from the prior art and which can be used optimally.
  • the sewer cleaning vehicle known from the prior art is characterized in particular by the fact that in the common tank container the sludge water compartment has an intermediate compartment and a further front compartment, in each case one behind the other.
  • the actual process water compartment is formed by two additional tanks on the side of this tank container.
  • the second filter which is designed in the form of a rotating sieve drum, is arranged in the front compartment, above the bottom of the tank container. The cleaned water leaving this filter is introduced into the intermediate compartment, while the dirt accumulated by the filtration accumulates in the bottom area of this front compartment and cannot flow into the intermediate compartment.
  • a suction line also leads back into the sludge water compartment, so that the accumulated dirt can be returned to the sludge water compartment and can no longer be dragged along in the line system to the process water compartment.
  • the water from the intermediate compartment is then pumped through a separate pipe into the process water tanks.
  • Service water can therefore be drawn from the tanks by the high-pressure pump, regardless of whether the rotating sieve drum is also in operation at this moment or not.
  • the process of recycling the accumulated sludge water is thus spatially and functionally separated from the process of extracting the used water by the various water compartments present. Due to their separate arrangement, the process water tanks never come along Sludge water in contact so that it can be cleaned easily. This has the advantage that the initial supply of the sewer cleaning vehicle with drinking water into these tanks is possible without great effort.
  • an upper float switch is provided in such a way that the pump, which is present in the line leading to the front compartment, is switched off when the maximum water level within the front compartment is correspondingly high becomes.
  • a further float switch is available, which closes the suction line leading into the sludge water compartment with a corresponding minimum level of dirty water in the front compartment. If there is a vacuum in the sludge water compartment, a vacuum cannot therefore also be created in the front compartment through the suction line.
  • a further filter is installed in the line leading from the intermediate compartment to the hot water tanks.
  • This filter acts as a fine filter and removes dirt particles that are larger than 0.08 mm from the dirty water. These dirt particles can still pass through the upstream sieve drum, since only dirt particles up to about 0.3 mm in size can be sieved out of the same.
  • This fine filter located in the line to the service water tanks is automatically monitored with regard to its effective filter area. This monitoring controls the cleaning process of the filter surface without interfering with the recovery process. As a result, service water for the high-pressure pump can be drawn from service water tanks regardless of whether this fine filter is in operation.
  • the piston-like configuration of the common partition wall which is known per se from the prior art.
  • the arrangement of the piston between these two compartments has no effect on the usable volume available in the service water tanks. If a large percentage of sludge is sucked in through the sludge hose, the sludge water compartment can be chosen to be relatively large and the intermediate compartment can be selected to be correspondingly small without the reprocessing process being adversely affected thereby; the amount of hot water available there is still available from the hot water tanks. Conversely, if the percentage of solid dirt is relatively low, the sludge water compartment can be chosen to be small and the intermediate compartment can be chosen to be large. This also has no influence on the amount of water accumulating in the process water tanks and available there.
  • the corresponding line openings are attached to the mechanical Schwinner displays in these compartments. The openings are therefore desirable far above of the corresponding compartment floor.
  • a tank container 10 is attached to a sewer cleaning vehicle, not shown in detail.
  • This tank container 10 has a circular cylindrical shape in cross section. Its rear end with respect to the vehicle is designed in the form of a rear plate 12 which can be folded upwards by a hinge arrangement at the top and can thus be folded away from the tank container 10.
  • the tailgate 12 is the rear end boundary of a mud water compartment 14, which is delimited by an end wall 16 on its opposite end side facing away from the driver's cab.
  • This end wall 16 is part of a piston arrangement 18 which at this point closes the tank container 10 in cross section. Due to a circumferential sealing profile 20, the mud water compartment 14 is one separated by the piston assembly 18 intermediate compartment 22.
  • a front compartment 24 is still present within the tank container 10.
  • the front compartment 24 is delimited on its front side by the end face 26 of the tank container 10.
  • the sludge water compartment 14 the intermediate compartment 22 and the front compartment 24 are thus arranged one behind the other.
  • a suction hose 28 protrudes into the sludge water compartment 14 from above, through which sludge water can be sucked into the sludge water compartment 14 from outside. The suction takes place due to the negative pressure generated in the sludge water compartment 14.
  • An intermediate floor 30 is fastened to the tailgate 12 and is connected to the remaining wall of the tank container 10 lying above the intermediate floor 30 via wall regions designed as a coarse sieve 31.
  • the coarse screen wall areas 31 can be folded up by a hinge 33.
  • a first line 32 opens into the mud water compartment 14 from the outside, which ends inside the mud water compartment 14 in a flexible piece of hose 34.
  • the mouth 36 of this flexible hose piece 34 which is provided at its free end, is attached to a mechanical float indicator 38. This ensures that the mouth opening 36 is always in the area of the water level 40 present in the mud water compartment 14.
  • the line 32 leads to a low-pressure pump 42 below the tank container 10 and from there to the front compartment 24 of the tank container 10.
  • the line 32 opens into this front compartment 24 and ends there in the area of a second pre-filter, a sieve drum filter 44 Sieve drum pending, fed through line 32
  • Water 46 flows through the outer surface 47 of the sieve drum 48 from the outside inwards and from there below through the outer surface, the surface of the outer surface 47 being covered with dirt particles 50 which are larger than 0.3 mm in diameter.
  • the sieve drum 48 rotates, which is represented by the arrow 52, these dirt particles 50 are removed again from the lateral surface 47 by a scraper 54.
  • These dirt particles 50 fall into the bottom area of the front compartment 24 and form a more or less dense layer of dirty water 56 there.
  • a suction line 58 projects into the dirty water layer 56 at one end. This suction line 58 leads from above into the sludge water compartment 14.
  • a lower float switch 60 and an upper float switch 62 are provided in the front compartment.
  • the lower float switch 60 controls a shut-off valve 64 installed in the suction line, which it closes when the dirty water layer 56 has an extremely low water level.
  • the upper float switch 62 switches off the low pressure pump 42 present in the first line 32 when the water level of the dirty water layer 56 has reached a maximum upper water level. This maximum upper water level is still below the sieve drum filter 44, so that this filter 44 cannot be impaired in its cleaning action by the dirty water layer 56.
  • the water cleaned by the sieve drum filter 44 flows in a free flow via a second line 66 through the partition wall 68 between the intermediate compartment and the front compartment into the intermediate compartment 22.
  • the intermediate compartment 22 there are floating bodies 72 in a guide box (not shown) for protection against surge movements, to which the mouth opening of a flexible piece of hose 74 is fastened.
  • This piece of tubing 74 opens at one end into a third line 76, in which a second low-pressure pump 78 is installed and which leads to a fine filter 80.
  • a fine filter 80 In this fine filter, the water sucked out of the intermediate compartment 22 through the flexible hose piece is further cleaned down to a dirt particle size of 0.08 mm in diameter.
  • the cleaned water emerging from the filter is further guided by means of this low-pressure pump 78 into separate service water tanks 82 arranged laterally next to the tank container 10.
  • the dirt particles accumulating in the fine filter 80 are pumped back into this compartment 14 via a return line 84 which opens into the sludge water compartment 14 from above.
  • the fine filter 80 has an integrated pressure difference control which, for example, visually indicates the degree of contamination when there is a differential pressure between the filter inlet and filter outlet and initiates a cleaning process for this filter, the recovery process not being interrupted.
  • a line 88 leads from each of the two service water tanks 82 to a high-pressure pump (not shown in more detail).
  • This high-pressure pump supplies a rinsing hose that can be lowered into the sewer to be cleaned with process water.
  • a branch line 90 leads back to the screen drum filter 44, so that the service water 92 present in the service water tank 82 can also be used to clean the screen drum 48. This is done by nozzles 93, which flush the screen drum 48 from the inside out.
  • a so-called vortex breaker 96 is located in the area of the inlet opening of the respective line 88 available.
  • Lines 98 and 100 each lead from above into the two process water tanks 82 and the intermediate compartment 22, each of which can be connected to a drinking water supply source 102.
  • a fine filter in line 98 so that even when filling with fresh water e.g. Contamination from a hydrant cannot get into the tanks and from there to the high pressure pump. Drinking water can thus be filled both in the service water tanks 82 and in the intermediate compartment 22.
  • the intermediate chamber When cleaning with fresh water, e.g. the intermediate chamber is completely filled with tap water at least once.
  • Valves are also present in the various lines, so that the corresponding lines can be blocked or opened in accordance with the respective mode of operation of the sewer cleaning vehicle.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Health & Medical Sciences (AREA)
  • Sewage (AREA)
  • Vehicle Body Suspensions (AREA)
  • Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
  • Treatment Of Sludge (AREA)
  • Filters For Electric Vacuum Cleaners (AREA)
  • Refuse Collection And Transfer (AREA)
  • Cyclones (AREA)
  • Control Of Driving Devices And Active Controlling Of Vehicle (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Claims (13)

1. Véhicule pour le nettoyage de canalisations d'égoûts, avec
― un compartiment à eau boueuse isolable au moyen d'une vanne arrière,
― un compartiment à eau recyclée,
― une première liaison consistant en plusieurs conduites entre le compartiment à eau recyclée,
― dans le compartiment à eau boueuse, un premier filtre en vue du filtrage grossier de l'eau boueuse contenue dans ce compartiment et qui est aspirée depuis l'extérieur du véhicule par une conduite d'aspiration,
― dans cette conduite, un second filtre sous forme d'un tambour rotatif de filtration muni de bandes de raclage,
― une pompe à haute pression dans une autre conduite conduisant hors du compartiment d'eau recyclée, caractérisé en ce que
― un compartiment intermédiaire (22) est relié par l'intermédiaire de conduites entre le compartiment d'eau boueuse (14) et le réservoir d'eau recyclée (82),
― un compartiment avant (24) supplémentaire est relié par l'intermédiaire de conduites entre ce compartiment intermédiaire (22) et le compartiment d'eau boueuse (14), tandis qu'une première conduite 32 est prévue entre le compartiment d'eau boueuse (14) et le compartiment avant (24), qu'une seconde conduite 66 est prévue entre le compartiment avant (24) et le compartiment intermédiaire (22), et qu'une troisième conduite (76) est prévue entre le compartiment intermédiaire (22) et le réservoir d'eau recyclée (82),
― le compartiment d'eau boueuse (14), le compartiment intermédiaire (22) et le compartiment avant (24) sont disposés en série les uns derrière les autres dans un réservoir (10) commun,
― le réservoir d'eau recyclée se présente sous la forme de deux réservoirs d'eau recyclée (82) placés sur les côtes du réservoir (10),
― des pompes à basse pression (42, 78) sont placées respectivement dans la première conduite (32) et la troisième conduite (76), dans le sens vertical en-dessous du réservoir (10), et
― le second filtre (44) est placé dans le compartiment avant (24), au-dessus du fond de celui-ci, tandis que la première conduite (32) débouche contre l'enveloppe 47 du tambour de filtration (48) de ce filtre (44), que la seconde conduite 66 raccorde ce second filtre (44) au compartiment intermédiaire (22), et qu'une conduite d'aspiration (58) reliant la zone intérieure du fond 56 du compartiment avant (24), en-dessous du second filtre (44) au compartiment d'eau boueuse (14) et débouche par le haut dans celui-ci.
2. Véhicule selon la revendication 1, caractérisé en ce que
― un contacteur supérieur à flotteur 62 est installé dans le compartiment avant (24) de telle manière que lorsque le niveau de liquide dans le compartiment avant (24) atteint un maximum correspondant à ce contacteur à flotteur (62), maximum qui se situe encore en-dessous du second filtre (44), la première pompe (42) est déclenchée et la conduite d'aspiration (58) est ouverte.
3. Véhicule selon la revendication 2, caractérisé en ce que
― un contacteur inférieur à flotteur (60) est installé dans le compartiment avant (24) de telle manière que lorsque le niveau de liquide dans le compartiment avant (24) atteint un minimum correspondant à ce contacteur à flotteur (60), la conduite d'aspiration (58) se trouvant encore immergée sous ce niveau de liquide et conduisant au compartiment d'eau boueuse (14) est fermée.
4. Véhicule selon la revendication 1, caractérisé en ce que
― un autre filtre (80) est prévu dans la troisième conduite (76), tandis que ce filtre (80) est en outre raccordé à une conduite de retour 84 qui débouche dans la partie supérieure du compartiment d'eau boueuse (14), les saletés apparaissant sur ce filtre (80) pouvant être renvoyées dans le compartiment d'eau boueuse (14).
5. Véhicule selon la revendication 1, caractérisé en ce que
― ce filtre (80) est équipé d'une commande intégrée basée sur la perte de charge, qui dans le cas d'une différence de pression entre l'entrée et la sortie du filtre induit une opération de nettoyage,
― les particules de saletés sont détachées du filtre par une différence de pression entre la conduite de retour (84) et le côté propre du filtre et sont transportées dans la partie supérieure du compartiment d'eau boueuse par un embout d'aspiration rotatif, entraîné par un moteur hydraulique, de la conduite de retour (84),
― cette opération de retour est actionnée par la dépression existant dans le compartiment d'eau boueuse, et
― cette opération de retour fonctionne de manière entièrement automatique et l'opération de recyclage n'est pas interrompue, car seule une faible fraction du volume est impliquée dans le retour vers le compartiment d'eau boueuse.
6. Véhicule selon la revendication 1, caractérisé en ce que
― un fond intermédiaire (30) est prévu dans le compartiment d'eau boueuse (14), dont les parois latérales se présentent en partie sous la forme d'un tamis et sont en partie reliées par le haut au compartiment d'eau boueuse,
― l'ouverture de la première conduite (32) est située au-dessus de ce fond intermédiaire (30), et
― la partie de la paroi se présentant sous la forme d'un tamis peut être relevée autour d'une charnière (33).
7. Véhicule selon la revendication 1, caractérisé en ce que
― la paroi de séparation mutuelle prévue entre le compartiment d'eau boueuse (14) et le compartiment intermédiaire (22) se présente sous la forme d'un piston (18) déplaçable dans le réservoir (10), de sorte qu'à une augmentation de la capacité du compartiment d'eau boueuse (14) obtenue par déplacement de ce piston (18) correspond une réduction proportionnelle de la capacité du compartiment intermédiaire (22).
8. Véhicule selon la revendication 7, caractérisé en ce que
― le piston (18) est déplaçable sur toute la longueur du compartiment d'eau boueuse (14) lorsque la tôle de fond arrière (12) est ouverte, de sorte que les boues présentes dans ce compartiment peuvent être extraites par le piston (18) lorsque la tôle de fond arrière (12) est relevée.
9. Véhicule selon la revendication 1, caractérisé en ce que
― des conduites (98, 100) de raccordement à la distribution d'eau (102) ressortent par le haut des deux réservoirs (82) et du compartiment intermédiaire (22).
10. Véhicule selon la revendication 1, caractérisé en ce que
― l'orifice (36) de la première conduite (32) débordant à l'intérieur de du compartiment d'eau boueuse (14) et l'orifice de la troisième conduite (74, 76) débouchant dans le compartiment intermédiaire sont respectivement fixés à un contacteur mécanique à flotteur (38, 72).
11. Véhicule selon la revendication 1 ou 9, caractérisé en ce que
― un contacteur mécanique à flotteur (69), grâce auquel la pompe (78) située dans la troisième conduite (76) peut être mise en marche lorsque le liquide atteint un niveau extrême inférieur et la pompe (42) située dans la première conduite (32) peut être mise en marche lorsque le liquide atteint un niveau extrême supérieur, est prévu dans le compartiment intermédiaire (22).
12. Véhicule selon la revendication 1, caractérisé en ce que
― un contacteur mécanique à flotteur (99) grâce auquel la troisième conduite (76) peut être fermée est situé dans les réservoirs (82).
13. Véhicule selon la revendication 1, caractérisé en ce que
― les réservoirs (82) sont reliés par des conduites.
EP90104649A 1989-03-14 1990-03-12 Véhicule pour le nettoyage de canalisations d'égouts Expired - Lifetime EP0387759B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8903134U 1989-03-14
DE8903134U DE8903134U1 (de) 1989-03-14 1989-03-14 Kanalreinigungsfahrzeug

Publications (3)

Publication Number Publication Date
EP0387759A2 EP0387759A2 (fr) 1990-09-19
EP0387759A3 EP0387759A3 (en) 1990-10-10
EP0387759B1 true EP0387759B1 (fr) 1991-09-18

Family

ID=6837093

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90104649A Expired - Lifetime EP0387759B1 (fr) 1989-03-14 1990-03-12 Véhicule pour le nettoyage de canalisations d'égouts

Country Status (5)

Country Link
EP (1) EP0387759B1 (fr)
AT (1) ATE67546T1 (fr)
DE (2) DE8903134U1 (fr)
DK (1) DK0387759T3 (fr)
ES (1) ES2025858T3 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4114384C1 (fr) * 1991-05-02 1992-12-03 Georg 8087 Tuerkenfeld De Klass
DE9313887U1 (de) * 1992-11-12 1993-11-11 Rohrreinigung Haas GmbH & Co., 70372 Stuttgart Einrichtung zum Reinigen von Drainagerohren in Eisenbahntunnels
DE4241888C1 (de) * 1992-12-11 1994-05-11 Georg Klas Schlammsaugewagen
DE102004013999C5 (de) * 2004-03-19 2015-01-15 Müller Umwelttechnik GmbH & Co KG Vorrichtung zur Wiederaufbereitung von Schmutzwasser

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1609112B1 (de) * 1966-07-19 1970-04-23 Keller & Knappich Gmbh Fahrzeug zum Kanalreinigen und Schlammsaugen
IL50348A (en) * 1976-08-24 1979-01-31 Ate Of Israel Represented By M Inorganic additives for zinc-alkaline secondary batteries
DE2929625A1 (de) * 1979-07-21 1981-02-12 Wiedemann & Reichardt Kanalreinigungsfahrzeug
DE3034058C2 (de) * 1980-09-10 1986-09-18 Karl 8901 Welden Wiedemann Schwimmendes Sammelbecken
DE3035224C2 (de) * 1980-09-18 1983-03-24 Herm. J. Hellmers Gmbh, 2000 Hamburg Schlammsaugewagen
EP0075603A1 (fr) * 1981-09-21 1983-04-06 GABLER GmbH & Co., KG. Dispositif pour le nettoyage de canalisations d'égouts et pour l'aspiration de boues
DE3140200A1 (de) * 1981-10-09 1983-04-28 Herm. J. Hellmers Gmbh, 2000 Hamburg "kanalreinigungsfahrzeug"
DE3418701A1 (de) * 1984-05-19 1985-11-21 Georg Dipl.-Ing.(FH) 8087 Türkenfeld Klaß Schlammsaugewagen
DE3433571A1 (de) * 1984-09-13 1986-03-20 Georg Dipl.-Ing. Klaß (FH), 8087 Türkenfeld Schlammsaugewagen
DE3433572A1 (de) * 1984-09-13 1986-03-20 Georg Dipl.-Ing. Klaß (FH), 8087 Türkenfeld Schlammsaugewagen

Also Published As

Publication number Publication date
ATE67546T1 (de) 1991-10-15
DE59000004D1 (de) 1991-10-24
EP0387759A2 (fr) 1990-09-19
DE8903134U1 (de) 1989-05-18
ES2025858T3 (es) 1992-04-01
EP0387759A3 (en) 1990-10-10
DK0387759T3 (da) 1992-01-27

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