EP0075603A1 - Dispositif pour le nettoyage de canalisations d'égouts et pour l'aspiration de boues - Google Patents

Dispositif pour le nettoyage de canalisations d'égouts et pour l'aspiration de boues Download PDF

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Publication number
EP0075603A1
EP0075603A1 EP81107469A EP81107469A EP0075603A1 EP 0075603 A1 EP0075603 A1 EP 0075603A1 EP 81107469 A EP81107469 A EP 81107469A EP 81107469 A EP81107469 A EP 81107469A EP 0075603 A1 EP0075603 A1 EP 0075603A1
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EP
European Patent Office
Prior art keywords
water compartment
sludge
container
filter
storage 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.)
Withdrawn
Application number
EP81107469A
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German (de)
English (en)
Inventor
Martin Nitz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gabler GmbH and Co KG
Original Assignee
Gabler GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gabler GmbH and Co KG filed Critical Gabler GmbH and Co KG
Priority to EP81107469A priority Critical patent/EP0075603A1/fr
Publication of EP0075603A1 publication Critical patent/EP0075603A1/fr
Withdrawn legal-status Critical Current

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    • 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 device for sewer cleaning and for sludge suction, in particular sewer cleaning and sludge transport vehicle, with a suction and pressure-resistant container, which is divided by a filter wall into a sludge water compartment and a filter water compartment, with a storage water compartment adjacent to the container, which is connected to the filter water compartment is connected at least temporarily, with a suction hose opening into the sludge water compartment, with a clearing hose fed by a high-pressure pump with filter water and / or reservoir water, which can be lowered into the sewer to be cleaned, and with a suction pump for loading the sludge water compartment and the filter water compartment.
  • a device of this type is known (DE-OS 26 48 851), in which the filter wall is built in a stationary manner in the container, which first of all makes cleaning and possibly replacement difficult.
  • only so-called gravity filtering is possible, since only the static pressure difference due to different water levels in the sludge water compartment on the one hand and in the filter water compartment on the other controls the filtering or the flow rate of the water from the sludge water compartment into the filter water compartment.
  • the object on which the invention is based is seen in creating a device of the type mentioned at the outset, which makes it possible to considerably increase the efficiency of the filtering and, in particular in addition to gravity filtering, also to enable forced filtering, to facilitate the cleaning and replacement of the filter wall and finally To improve the utilization of the existing water volume and the emptying of the sludge water tank at the landfill.
  • the end wall of the filter water compartment opposite the sludge water compartment is part of a piston which is longitudinally displaceable in the container and delimits with its rear side a storage water compartment of the container via which the storage water compartment is connected to the filter water compartment, that the filter wall is fixed to the end wall is connected and at a distance from it, such that when the piston is displaced longitudinally, the filter water compartment changes its position within the container with constant volume and, depending on the direction of movement, the volumes of the sludge compartment and the storage water compartment increase and decrease in opposite directions, and that the sludge water compartment has an end cover for an opening at an end opposite the filter wall, the diameter of which is at least equal to that The diameter of the filter wall is.
  • the pot pistons can be displaced so far in the direction of the discharge opening that the filter wall protrudes beyond the opening and there for cleaning and, if necessary, replacement is accessible in accordance with the dirt or sludge consistency to be expected in the following use. Furthermore, it is possible to move the pot piston with the filter wall in the direction of the end cover even when the end cover is closed, the storage water compartment, of course, having to be closed off from the filter water compartment.
  • the filter wall can consist of a plurality of sieves arranged at a distance from one another in the longitudinal direction of the container, the diameter of which corresponds to the clear width of the container.
  • the filter wall is divided into several individual filters in the form of sieves, a coarse sieve, a fine sieve and a fine sieve being provided according to a preferred embodiment, the coarse sieve serving as an ejection plate for the thickened sludge when it is emptied from the container and thus represents the boundary of the filter water compartment with respect to the sludge water compartment, and the fine sieve is arranged closest to the end wall of the pot piston and is designed as a fabric mat. This arrangement results in improved filtration.
  • the piston is advantageously the aforementioned pot piston and is sealed with respect to the inner wall of the container by means of spaced ring seals, whereby it has holding rods extending beyond the end wall in the longitudinal direction of the container through the filter water compartment to the coarse sieve, on which the sieves can be folded and exchangeably suspended .
  • a device for subjecting the latter to high pressure water for the purpose of cleaning the same can expediently be provided between the end wall and the fine screen. This is advantageous in that, of course, especially the fine sieve that retains the finest sludge constituents is the easiest to clog.
  • one is optionally in the open or closed position controllable flow flap in the end wall on the one hand and both a piston pump delivering into the storage water compartment in the container wall between the storage water and storage water compartments and a shut-off line on the other hand.
  • Such a connection is particularly suitable for ensuring that the desired liquid balance between the filter water compartment and the storage water compartment on the one hand and the storage water compartment and the storage water compartment on the other hand is always ensured.
  • the suction pump is designed as a suction and pressure pump, and its suction and pressure line to the storage water compartment is shorter than that to the sludge water compartment, both line connections being arranged on the top of the tank and equipped with float valves.
  • the float valves are used to ensure that water is not drawn into the suction lines.
  • the different line lengths ensure that the vacuum in the storage water compartment is somewhat higher than that in the sludge water compartment, so that there is a suction effect that supports gravity filtering through the filter water compartment; one could call this a modified gravity filtering.
  • the suction and pressure line at its branch to the sludge water compartment on the one hand and to the storage water compartment on the other hand has a multi-way valve, by means of which, depending on whether the suction and pressure pump has suction or pressure operation by means of a four-way valve, there is alternatively a sludge and storage water compartment below Have the vacuum or the sludge water compartment under pump pressure and the storage water compartment under atmospheric pressure or vice versa.
  • the storage water compartment is placed under pump pressure and the sludge water compartment under atmospheric pressure, in such a way that the pot piston moves in the direction of the emptying opening or the end cover, then the aforementioned forced filtering results on the one hand and displacement of the sludge deposited on the bottom of the sludge water container towards the end cover on the other hand. If the application is reversed, then either the pot piston can be pushed back and / or a forced filtering can also be carried out, the water from the sludge water compartment being pushed through the filter water compartment into the storage water compartment.
  • the water levels in the sludge water compartment in addition to the filter water compartment, the storage water compartment and also the storage water compartment, can be controlled arbitrarily by these measures, a particularly good utilization of the available water quantity and a particularly good efficiency of the filtering being able to be achieved.
  • the device according to the invention can also be used e.g. can be used in the chemical industry, in breweries, in oil refineries and the like. Thus, it is not limited to the cleaning of urban sewers.
  • the device for sewer cleaning and sludge extraction shown in FIG. 1 can also be arranged in a stationary manner, but it is preferably seated on a vehicle chassis (not shown) and forms a sewer cleaning and sludge transport vehicle with it.
  • the device has a suction and pressure-resistant container 1, which is divided by a filter wall 2 into a sludge water compartment 3 and a filter water compartment 4. Adjacent to the container 1 is a storage water compartment 5, which is connected to the filter water compartment 4 at least temporarily.
  • a suction hose 6 opens into the sludge water compartment 3.
  • a clearing hose 9 which is fed by a high-pressure pump 7 with filter water and / or storage water and can be lowered into the channel 8 to be cleaned, is provided, and finally a suction pump 10 is provided for loading the sludge water compartment 3 and the filter water compartment 4 available.
  • the end wall 11 of the filter water compartment 4 opposite the sludge water compartment 3 is part of a piston 12 which is longitudinally displaceable in the container and borders with its rear side a storage water compartment 13 of the container 1 from which the storage water compartment 5 is connected to the filter water compartment 4.
  • the filter wall 2 is fixedly connected to the end wall 11 and is at a distance from it, such that when the piston 12 is displaced longitudinally, the filter water compartment 4 changes its position within the container 1 at a constant volume and, depending on the direction of movement (double arrow A), the Volumes of the sludge water compartment 3 and the storage water compartment 13 increase and decrease in opposite directions.
  • the mud water compartment 3 has at its end opposite the filter wall 2 a cover 14 for an opening, the diameter D of which is at least equal to the diameter of the filter wall 2.
  • the end cover 14 can pivot upwards about the articulation point 15 and is sealed off from the container 1 by means of an annular seal 16.
  • the storage water compartment 5 is depressurized and can advantageously be formed by a container 17 made of plastic or the like. With a manhole 18.
  • the filter wall 2 consists of a plurality of sieves 19, 20, 21 arranged in the longitudinal direction (double arrow A) of the container 1, the diameter of which corresponds to the inside width of the container 1, which in turn corresponds to the diameter D of the of the opening 14 provided opening is the same.
  • a coarse screen 19 a fine screen 20 and a fine screen 21, the coarse screen 19 as an ejection plate for the thickened sludge (FIGS. 5 and 6) when it is emptied from the container 1 and the fine screen 21 of the end wall 11 on next arranged and designed as a fabric mat.
  • the coarse sieve 19 holds coarse impurities and parts floating on the water surface, e.g. B. in matchbox size, back.
  • the fine screen 20 allows no passage of small parts such as matches and fiber residues.
  • the fine sieve 21 finally holds solids of such particle size that could damage the moving parts of the high pressure pump 7.
  • the permissible grain sizes should not exceed 1/10 mm.
  • the fabric mat used for low-viscosity sludge is insensitive to microorganisms, moisture and putrefaction, and its mechanical structure prevents deposits of sludge residues, does not tend to clog, allows the filter cake to detach itself and is available with a different pore size if possible. depending on the conditions of use.
  • the fabric mat can, for example, be folded or provided with conical structures to enlarge its surface.
  • the degree of contamination and thus the flow resistance of the individual filters or screens 19, 20 and 21, in particular that of the fine screen 21, can be recognized from the different liquid levels in the sludge water compartment 3 on the one hand and in the storage water compartment 13 on the other hand, which can be observed through appropriate sight glasses 22 and 23 .
  • the forced filtering to be described can be used to compensate for liquid between the two compartments; if necessary, backwashing of the screens 19, 20 and 21 is also possible in a manner which is also yet to be explained.
  • the piston 12 is advantageously a pot piston and is sealed off from the inner wall 26 of the container by means of ring seals 24 and 25 which are arranged at a distance from one another.
  • the pot piston has in the longitudinal direction of the container 1 beyond the end wall 11 in the longitudinal direction A of the container through the filter water compartment 4 through to the rough sieve 19 extending holding rods 27 on which the sieves 19, 20 and 21 are hinged and interchangeably suspended.
  • a device 28 for supplying the latter with high-pressure water for the purpose of cleaning the latter is provided between the end wall 11 and the fine sieve 21.
  • a flow flap 29, which can be controlled either in the open position or in the closed position, shown in FIG. 1 in the closed position, is provided in the end wall 11, as well as a piston pump 6 8 conveying into the storage water compartment 5 Container wall 31 between storage water and storage water compartments 5 13 and a shut-off line 32.
  • the suction pump 10 is designed as a suction and pressure pump, its suction and pressure line 33 to the storage water compartment 13 being shorter than that to the sludge water compartment 3. Both line connections 34 and 35 are arranged on the top of the container and equipped with float valves 36 and 37.
  • the suction and pressure line 33 has at its branching to the mud water compartment 3 on the one hand and to the storage water compartment 13 on the other hand, a multi-way valve 38, by means of which depending on whether the suction and pressure pump 10 by means of a four-way valve 39 has suction or pressure operation, either Let sludge and storage water compartment 3, 13 under vacuum or the sludge water compartment 3 under pump pressure and the storage water compartment 13 under atmospheric pressure or vice versa.
  • the storage water compartment 13 forms a kind of buffer volume and a calming zone up to the passage into the storage water compartment 5. Dirt particles can also settle in the storage water compartment 5, which have been let through by the fine sieve 21 and are harmless to the high pressure pump 7.
  • a residual concentration of a flocculant can also be effective in the storage water compartment 13 in the case of large sludge throughputs, which can be metered from a reservoir 40 into the sucked-in sludge water in the area of the outlet 41 of the suction line 6.
  • a sump 42 is provided in the storage water compartment 5, which collects the above-mentioned dirt particles and from which the sump contents under vacuum can be transferred to the sludge water compartment 3 by means of an overflow line 43 via an adjustable throttle for flow rate control and a check valve 45.
  • the high-pressure pump 7 draws in water from the storage water compartment 5 via a line 46, the inlet of which is kept as vortex-free as possible by a partition plate 47.
  • the four-way valve 39 is in the drawn position "suction" and the multi-way valve 38 establishes a connection between the sludge water compartment 3, the storage water compartment 13, the suction and pressure line 33 via a filter 60 to the four-way valve 39. With 56 a check valve for the suction air on the way to the atmosphere (arrow B) is designated.
  • connection 56 'of the multi-way valve 38 to the atmosphere is closed and the pump 10 statically generates the same negative pressure in the compartments 3 and 13.
  • the pressure in the storage water compartment 13 is still somewhat lower than in the sludge water compartment 3, since the branch line 33 'from the multi-way valve' 38 to the sludge water compartment 3 generates a pressure difference due to the line resistance.
  • this advantageously supports gravity filtering from the sludge water compartment to the storage water compartment. Since the pressure difference is relatively small, the pot piston 12 remains in its position due to the frictional resistance, as shown in FIG. 3.
  • sludge water 57 is drawn in from the channel 8 into the sludge water compartment 3 via the suction line 6 in the direction of the arrow C.
  • the pump 10 is protected against over suction by the floating valve 36 and 37.
  • the sludge 58 sediments more or less quickly in the sludge water compartment 3.
  • a flocculant according to arrow 59 is added from the container 40 in the manner already mentioned, which then becomes effective in the quieter areas of the sludge water compartment 3 can.
  • the high-pressure pump 7 sucks from the supply water compartment 5 via the suction line 46 via a conventional flushing filter 60 'of water and supplies it through a pressure conduit 61 and a hose reel 62 the Räumschlauch 9 to, said Räumschlauch 9 in Trentsdüse by a R e 63 according to the reaction principle ( Arrows 64) is drawn into the channel 8 in the direction of the arrow E and loosens the dirt there and drives the sludge with the escaping water to the suction nozzle 65 of the suction line 6.
  • the high-pressure pump 7 simultaneously drives a piston motor 67 for a feed pump 68 via a pressure line 66, which can also work dry and, moreover, against any operating state (vacuum or excess pressure) fills the storage water compartment 5 in the storage water compartment 13.
  • the feed pump 68 is preceded by a cylindrical fabric mat as a filter or cylinder sieve 69, so that the water pre-cleaned by the sieves 19, 20 and 21 flows through this cylinder sieve 69 to the (piston) feed pump 68. Since the volume of the cylinder screen 69 is completely filled with liquid, due to the nature of this feed pump 68, the cylinder screen 69 is flushed back and forth from inside to outside with every idle stroke with approximately the same delivery rate as the useful stroke, so that it can practically not become clogged. The cylinder screen 69 thus provides additional security with regard to the protection of the high-pressure pump 7 in the event of a failure or damage to the fine screen 21. In addition, solid particles and, if appropriate, late-flocked sludge particles are retained.
  • the delivery rate of the feed pump 68 is equal to or greater than the delivery rate of the high-pressure pump 7 in order to always keep the storage water compartment 5 filled.
  • the feed pump 68 is provided in the form shown in FIG. 3 with a valve plate 70 which is biased in such a way that it does not open when there is an overpressure in the storage water compartment 13.
  • the pressurized water circulation of the piston motor 67 is controlled with a timer valve 71, specifically as a function of a pulse from the float switch 34 'which is emitted as a function of the maximum liquid level.
  • the backwash filter 60 ' is flushed, for example, by the differential pressure.
  • this sludge water excess according to FIG. 4 is expediently returned to the channel 8 via the movable suction line 6 in the direction of arrow F in order to have a thickened, low-water and relatively solid sludge mass in the sludge water compartment 3 to obtain.
  • the shut-off flap 72 of the suction line 6 is opened, the flow flap 29 is closed, the multi-way valve 38 is connected to the suction line 33 to the float valve 37 and thus at the same time the connection of the storage water compartment 13 via the float valve 36 to the atmosphere.
  • the four-way valve 39 has switched the pump 10 to "press”, so that the sludge water compartment 3, secured by a safety valve 73, is now pressurized and the sludge water is thus pushed back via the suction line 6 until the inlet 74 of the suction line 6 is free again.
  • the sludge water can also be pressed out of the sludge water compartment 3 through the sieves 19, 20, 21 into the storage water compartment 13 with the shut-off valve 72 and the flow valve 29 open, the pot piston 12 naturally remaining in contact with the stops 54. This involves forced filtering, in which the different liquid levels in compartments 3 and 13 can be observed.
  • the pot piston 12 can be used to squeeze out the sludge water, which in turn results in forced filtering, which can be repeated several times.
  • the shut-off valve 72 is first opened for auxiliary dewatering of the sludge water compartment 3, the multi-way valve 38 connects the sludge water compartment 3 to the atmosphere via the float valve 37, at the same time the connection to the pump 10 is interrupted and the direction of flow of the multi-way valve 38 from the storage water compartment 13 via the float valve 36 and the line 33 switched to the four-way valve 39, which is in the switch position "press".
  • the flow flap 29 is closed and the valve plate 70 of the feed pump 68 is biased with a pressure that is higher than the pressure with which the safety valve 73 is biased.
  • the storage water compartment 13 is thus pressurized with compressed air and consequently the pot piston 12 is moved in the direction of the arrows F in the longitudinal direction of the container 1 in the sense of a reduction in the volume of the sludge water compartment 3 and an enlargement of the storage water compartment 13.
  • the sedimented sludge mass 58 is pressed together in the sludge water compartment 3 and the sludge water flows through the sieves 19, 20 and 21 until the space between the fine sieve 21 and the end wall 11 is completely filled. This means that forced filtering takes place again.
  • the movement of the pot piston 12 ends as soon as a pressure has built up in the sludge water compartment 3 which corresponds approximately to the pressure in the storage water compartment 13. Part of the sludge and sludge water flows through the suction line 6 into the channel 8. In this piston position, it is expedient to flush the sieves 19, 20 and 21 back with the prestressed compressed air in the storage water compartment 13 and a sudden opening of the flow flap 29 with the compressed air entering the filter water chamber 4 and to clean them roughly.
  • the fine screen 21 can also be cleaned in any other position of the pot piston 12 while the high pressure pump 7 is running via the pressure line 66 and a hose connection 40 by means of the device 2 8 for supplying the fine screen 21 with high pressure water.
  • These are preferably rotatably arranged nozzle arms 75, which can be set in rotation by a corresponding inclined arrangement of nozzles 76 (FIG. 5).
  • the cover 14 is pivoted upwards by approximately 90 ° by means of piston-cylinder units 77, which are arranged on the side and outside of the container 1 and are shown in broken lines, as a result of which that part of the thickened sludge which has accumulated in the cover 14 falls out.
  • the pump 10 is switched to "press" by means of the four-way valve 39, and the multi-way valve 38 also supplies the compressed air clear the way via line 33 and float valve 36 into the storage water compartment 13.
  • the flow flap 29 is closed. Due to the excess pressure arising in the storage water compartment 13, the pot piston 12 moves in the direction of the arrows F so far towards the open end of the container 1 that the existing sludge is pushed out completely.
  • a tether 78 ensures that the pot piston 12 is held in the desired end position in such a way that the front piston seal 24 cannot move out of the open end of the container 1.
  • the screens 19, 20 and 21 protrude visibly and easily accessible beyond the open end of the container 1, so that the amounts of sludge accumulated between the screens and in front of the end wall 11 can fall off.
  • the lid 14, the sieves 19, 20 and 21, the storage water compartment 13 with the flow flap 29 open (if necessary also through the manhole 79 in the end wall 11), this is done by means of the rotating nozzle arms 75 on the one hand and manually by means of a spray gun 80 on the other hand.
  • the cleaning is carried out with pressurized water from the running high-pressure pump 7, which is fed by the water still in the storage water compartment 5.
  • the feed pump 68 either delivers empty or is put out of operation by blocking the supply of pressurized water to the piston motor 67.
  • a drain pipe 81 can also be opened, by means of which the storage water compartment 13 and the storage water compartment 5 can finally be completely emptied.
  • the screens 19, 20 and 21 can be checked, opened, cleaned or, depending on the type of sludge to be expected in the subsequent use, replaced with screens of other sizes or permeability with simple means.

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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)
  • Treatment Of Sludge (AREA)
EP81107469A 1981-09-21 1981-09-21 Dispositif pour le nettoyage de canalisations d'égouts et pour l'aspiration de boues Withdrawn EP0075603A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP81107469A EP0075603A1 (fr) 1981-09-21 1981-09-21 Dispositif pour le nettoyage de canalisations d'égouts et pour l'aspiration de boues

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81107469A EP0075603A1 (fr) 1981-09-21 1981-09-21 Dispositif pour le nettoyage de canalisations d'égouts et pour l'aspiration de boues

Publications (1)

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EP0075603A1 true EP0075603A1 (fr) 1983-04-06

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EP81107469A Withdrawn EP0075603A1 (fr) 1981-09-21 1981-09-21 Dispositif pour le nettoyage de canalisations d'égouts et pour l'aspiration de boues

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0331012A1 (fr) * 1988-03-01 1989-09-06 Herm. J. Hellmers GmbH Dispositif pour l'aspiration et l'évacuation de sédiments fins d'un conteneur d'eau industrielle vers un collecteur de boues
EP0387759A2 (fr) * 1989-03-14 1990-09-19 Peter Assmann Véhicule pour le nettoyage de canalisations d'égouts
AT396147B (de) * 1990-03-08 1993-06-25 Josef Kaiser Saugdruckfass
AT410112B (de) * 2001-05-09 2003-02-25 Kaiser Ag Filtereinrichtung zur filterung von aus einer schmutzkammer abzuführendem wasser
FR2840234A1 (fr) * 2002-05-31 2003-12-05 Rivard Sa Dispositif de degrillage monte sur un circuit de recyclage des eaux usees equipant un vehicule combine hydrocureur
EP1449973A2 (fr) * 2003-01-30 2004-08-25 DB Netz Aktiengesellschaft Procédé et appareil de nettoyage d'un système d'ecoulement proche d'une voie ferrée

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE915555C (de) * 1953-02-28 1954-07-22 Karl Heinz Schoerling Vorzugsweise auf ein Fahrzeug aufzubauender Behaelter zur Aufnahme von Sand, Schlammod. dgl., insbesondere zur Sinkkastenentleerung mittels Unterdruck
DE2303125B2 (de) * 1973-01-23 1974-11-14 Keller & Knappich Augsburg, Zweigniederlassung Der Industrie-Werke Karlsruhe Augsburg Ag, 8900 Augsburg Schlammsaugewagen
DE2648851A1 (de) * 1976-10-27 1978-05-03 Georg Ing Grad Klass Fahrzeug zum kanalreinigen und zum schlammtransport
DE2834996A1 (de) * 1977-08-29 1979-03-15 Super Products Corp Mobile reinigungseinrichtung fuer abwasserkanal-ablaeufe

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE915555C (de) * 1953-02-28 1954-07-22 Karl Heinz Schoerling Vorzugsweise auf ein Fahrzeug aufzubauender Behaelter zur Aufnahme von Sand, Schlammod. dgl., insbesondere zur Sinkkastenentleerung mittels Unterdruck
DE2303125B2 (de) * 1973-01-23 1974-11-14 Keller & Knappich Augsburg, Zweigniederlassung Der Industrie-Werke Karlsruhe Augsburg Ag, 8900 Augsburg Schlammsaugewagen
DE2648851A1 (de) * 1976-10-27 1978-05-03 Georg Ing Grad Klass Fahrzeug zum kanalreinigen und zum schlammtransport
DE2834996A1 (de) * 1977-08-29 1979-03-15 Super Products Corp Mobile reinigungseinrichtung fuer abwasserkanal-ablaeufe

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0331012A1 (fr) * 1988-03-01 1989-09-06 Herm. J. Hellmers GmbH Dispositif pour l'aspiration et l'évacuation de sédiments fins d'un conteneur d'eau industrielle vers un collecteur de boues
EP0387759A2 (fr) * 1989-03-14 1990-09-19 Peter Assmann Véhicule pour le nettoyage de canalisations d'égouts
EP0387759A3 (en) * 1989-03-14 1990-10-10 Peter Assmann Sewer cleaning vehicle
AT396147B (de) * 1990-03-08 1993-06-25 Josef Kaiser Saugdruckfass
AT410112B (de) * 2001-05-09 2003-02-25 Kaiser Ag Filtereinrichtung zur filterung von aus einer schmutzkammer abzuführendem wasser
FR2840234A1 (fr) * 2002-05-31 2003-12-05 Rivard Sa Dispositif de degrillage monte sur un circuit de recyclage des eaux usees equipant un vehicule combine hydrocureur
EP1449973A2 (fr) * 2003-01-30 2004-08-25 DB Netz Aktiengesellschaft Procédé et appareil de nettoyage d'un système d'ecoulement proche d'une voie ferrée
EP1449973A3 (fr) * 2003-01-30 2005-02-02 DB Netz Aktiengesellschaft Procédé et appareil de nettoyage d'un système d'ecoulement proche d'une voie ferrée

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