EP0512392B1 - Schlammsaugwagen - Google Patents

Schlammsaugwagen Download PDF

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Publication number
EP0512392B1
EP0512392B1 EP92107303A EP92107303A EP0512392B1 EP 0512392 B1 EP0512392 B1 EP 0512392B1 EP 92107303 A EP92107303 A EP 92107303A EP 92107303 A EP92107303 A EP 92107303A EP 0512392 B1 EP0512392 B1 EP 0512392B1
Authority
EP
European Patent Office
Prior art keywords
tank
pressure pump
sludge suction
vehicle according
suction vehicle
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
EP92107303A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0512392A1 (de
Inventor
Georg Klass
Helmut Jun. Sinz
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0512392A1 publication Critical patent/EP0512392A1/de
Application granted granted Critical
Publication of EP0512392B1 publication Critical patent/EP0512392B1/de
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

Definitions

  • the invention relates to a sludge suction vehicle with a high-pressure pump for generating a cleaning jet; a suction device for extracting slurries generated by the cleaning jet; a collection and clarification container connected to the suction device for the extracted slurries; a treatment device connected to the collection and clarification tank for the treatment of roughly clarified liquid from the collection and clarification tank, the treatment device being connectable to the high pressure pump for supplying the high pressure pump with finely clarified liquid; and with a fresh water tank that can be connected to the high pressure pump for supplying the high pressure pump with fresh water.
  • Such a sludge suction vehicle is known from DE 27 19 599 B1 and is preferably used in street cleaning for cleaning sewage locks and sewers.
  • Such a sludge suction truck largely covers its flushing water requirement for generating a cleaning jet from the high-pressure pump from the sludge water supply in the collection and clarification container.
  • This means that the sludge suction vehicle is independent of a fresh water source over a long period of operation.
  • the amount of finely clarified liquid that can be released by the treatment device to the high-pressure pump decreases, so that at some point during operation to supply the high-pressure pump with fresh water from the fresh water tank must become. It may also be the case that fresh water has to be used as rinsing water instead of treated sludge water for certain cleaning work.
  • the sludge suction vehicle according to the invention is characterized in that the treatment system is connected to an inlet of the high pressure pump via a ventilation device arranged above the treatment system and the high pressure pump and having a ventilation opening; that the ventilation device comprises a ventilation tank with a float device through which a connecting line to the high-pressure pump can be shut off when the liquid level in the tank is lowered, and that the fresh water tank can be connected to the inlet of the high-pressure pump via a non-return valve that opens when the connecting line is blocked and the high-pressure pump opens under suction .
  • This solution according to the invention avoids a cavitation run of the high-pressure pump, in that the connecting line to the high-pressure pump is initially shut off during start-up until a sufficient amount of finely clarified liquid has accumulated in the ventilation tank while venting the processing device and the connecting line, and the float device prevents the suction effect of the High-pressure pump has been lifted, lifting the blocking of the connecting line.
  • the check valve was open while the connecting line was shut off, so that the high-pressure pump was supplied with liquid from the fresh water tank during this time.
  • a switchover of the supply of the high-pressure pump with rinsing water from the treatment device back to the fresh water tank takes place automatically when the treatment device can no longer convey enough finely clarified water so that the liquid level in the breather tank drops so much that the connecting line between the breather tank and the high-pressure pump is blocked off by the float device.
  • the check valve opens immediately while avoiding a cavitation run and the continued supply of the high-pressure pump with rinsing water from the fresh water tank is ensured.
  • the venting container has a clarifying volume for further clarification of the liquid supplied by the processing device by settling very small dirt particles, for example smaller than 25 »m, which cannot be separated in the processing device.
  • the venting container can advantageously be mounted on the sludge suction vehicle in a vibration-insulated manner.
  • the supply of liquid from the preparation device into the venting container is expediently carried out using flow guiding devices in such a way that a laminar flow of the amount of flushing water flowing through also arises in the venting container near the inlet region of the liquid.
  • a laminar flow promotes the settling of dirt particles in that there is no whirling up of already settled or settling dirt particles.
  • a return line branching off from a line for the cleaning jet which leads into a connecting line between the processing device and the ventilation tank and is provided with a safety and switching valve, can be provided.
  • This return line means that the high-pressure pump does not have to be switched off if work with the cleaning jet is interrupted. If a tap is closed at the end of the line for the cleaning jet or a blockage occurs at an outlet nozzle, the liquid conveyed by the high pressure pump returns via the branching line back into the flushing liquid circuit, the safety and switching valve for a pressure drop and line 36 being released the confluence ensure an adjustment of the flow velocities of the liquid from the treatment device and the line 30. So that the rinsing liquid occurs unchanged Velocity into the breather tank, and there is no swirling of the rinsing liquid in the breather tank when using this return line.
  • FIG. 1 shows an exemplary embodiment of the device parts of an inventive sludge suction vehicle which are essential to the invention.
  • reference number 1 denotes a container mounted on a vehicle (not shown), which is divided by a partition 2 into a volume 4 used as a collecting and clarifying container and into a volume 3 used as a fresh water container.
  • a sludge suction line 13 with a valve 14 arranged therein opens into the collecting and clarifying tank 4. Furthermore, the collecting and clarifying tank 4 is connected via a line 34 to a pump 15 for generating a negative pressure in the tank.
  • Reference number 5 denotes a sludge liquid collected in the container 4, from which solid dirt particles 7 have settled.
  • the collecting and clarifying container 4 has a separate volume 33 which is separated from the remaining volume of the collecting container 4 by walls 28 which have openings. The openings in the walls 28 are dimensioned so that very coarse dirt particles are prevented from entering the partial volume 33.
  • a treatment device is generally designated by the reference numeral 8 and is connected to the collecting and clarifying tank 4 via a connecting line 11, the connecting line 11 being closed off from the partial volume 33 of the collecting and clarifying tank 4.
  • the treatment device 8 has a pump 10 and a flow separator 9, which in the present exemplary embodiment consists of a combination of a cyclone with a crossflow filter arranged therein.
  • the flow separator 9 is connected to the collection and clarification tank 4 via a return line 12 for the return of liquid enriched with dirt load into the collection and clarification tank 4.
  • An outlet of the flow separator 9 for treated liquid is connected via a connecting line 36 to a ventilation tank 37, a flow guiding device 32 being provided at the entry point of the connecting line 36 into the ventilation tank 37, which in the present exemplary embodiment consists of a block having a plurality of narrow flow channels .
  • the venting container 37 which in the present exemplary embodiment extends approximately over the length of the container 1 and is arranged on the container 1, has a clarifying volume 27 in which the rinsing liquid supplied by the treatment device can be clarified even further by settling dirt particles.
  • a dirt particle deposit or a liquid layer with an enriched dirt load is designated by 26 at the bottom of the clarifying volume 27.
  • the venting container 37 is supported against the container 1 in a vibration-insulated manner on a bearing element 35 having a spring. 22 denotes a float arranged opposite the entry point of the connecting line 36. The float 22 is guided and closed by guide devices (not shown in FIG.
  • the openings 23 and 24 can, for example, have flanges that can be placed against the walls of the float to form large sealing surfaces. Accordingly, the float walls could be designed to form large sealing surfaces and, for example, have annular depressions for the engagement of annular connection line ends.
  • the reference numeral 40 designates a return line for the return of liquid enriched with dirt particles from the ventilation tank 37 into the collecting and clarifying tank 4.
  • a device 16 for regulating the flow rate is arranged in this return line 40.
  • a flushing inlet 25 is provided on the side of the venting container 37 opposite the exit point of the line 40 and the entry point of the connecting line 36, through which an external flushing jet according to arrow 39 can be directed to flush the volume 27 of the venting container 37.
  • the reference numeral 21 denotes a connecting line connected to the fresh water tank 3 with a fresh water amount 6, which opens into the connecting line 17 between the vent tank 37 and the high pressure pump 18.
  • a valve 20, a filter 41 and a check valve 19 are provided in the connecting line 21.
  • a line 31 connects to the high-pressure pump 18, in the present exemplary embodiment a piston pump, for a line generated by the high-pressure pump 18 Cleaning jet on.
  • the line 31 can be provided at its open end with a nozzle (not shown in FIG. 1) and a shut-off valve.
  • a line 30 branches off from the line 31 and opens into the line 36 between the pure water outlet of the flow separator 9 and the ventilation tank 37.
  • a safety and switching valve 29 with a variable flow cross section is provided in line 30.
  • the treatment device 8 When the device shown in FIG. 1 is started up, the treatment device 8, the venting container 37, the high-pressure pump 18 and the corresponding connecting lines are initially still empty and the opening 24 of the connecting line 17 is closed by the float 22 in the venting container 37.
  • the check valve 19 opens immediately, so that the high-pressure pump 18 is supplied with fresh water 6 from the fresh water tank 3 while avoiding cavitation.
  • the check valve 19 closes due to the pressure of the flushing liquid from the venting container built up in the connecting line, and the high-pressure pump draws flushing liquid from the venting container 37, which is supplied with flushing liquid by the treatment device 8.
  • the normal operating state is thus reached, in which the high-pressure pump takes its rinsing water from the collecting and clarifying tank 4.
  • 13 slurries are sucked into the collecting and clarifying tank 4 via the suction line, which slurries were generated by the cleaning jet from the high-pressure pump 18.
  • the suction of the slurries takes place in that a vacuum is generated by the pump 15 in the collecting and clarifying tank 4.
  • the liquid level in the volume 27 of the ventilation container 37 rises or falls. If more rinsing liquid is supplied than is removed by the high-pressure pump, the float 22 rises further until it closes the opening 23 of the vent tube 38. Excess liquid volume can now be returned via line 40 to the collecting and clarifying tank 4, the line 40 advantageously being connected to the venting tank 37 in such a way that liquid enriched with dirt particles is returned to the collecting and clarifying tank 4.
  • the flow control 16 is arranged in the return line 40.
  • venting container 37 can be cleaned by an external flushing jet 39 which is sent through the flushing inlet 25.
  • the amount of treated rinsing liquid that can be generated by the processing device 8 decreases due to increasing dirt concentration in the collecting and clarifying tank 4, the liquid level in the volume 27 of the ventilation tank 37 drops until the opening 24 of the connecting line 17 through the float 22 is closed. This results in a pressure drop in the line 17, which leads to an opening of the check valve 19 and thus, while avoiding cavitation, to an immediate further supply of the high-pressure pump 18 with rinsing water from the fresh water tank 3.
  • work with the cleaning jet can be interrupted in that a shut-off valve at the end of line 31 is closed for the cleaning jet.
  • the rinsing water conveyed by the pump 18 can then be returned to the rinsing water circuit via line 30.
  • the safety and switching valve 29 ensures that the liquid flowing through line 30 is matched with respect to the pressure and flow velocity of the liquid flowing through line 36 from the processing device 8.
  • the liquid conveyed by the pump 18 can thus be returned to the ventilation container 37 without disadvantageously changing the flow conditions in the ventilation container 37. This return advantageously prevents the high-pressure pump 18 from being switched off when work with the cleaning jet is interrupted and the system having to be restarted.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Vehicle Waterproofing, Decoration, And Sanitation Devices (AREA)
  • Handcart (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Cleaning In General (AREA)
EP92107303A 1991-05-02 1992-04-29 Schlammsaugwagen Expired - Lifetime EP0512392B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4114384 1991-05-02
DE4114384A DE4114384C1 (enrdf_load_stackoverflow) 1991-05-02 1991-05-02

Publications (2)

Publication Number Publication Date
EP0512392A1 EP0512392A1 (de) 1992-11-11
EP0512392B1 true EP0512392B1 (de) 1995-03-29

Family

ID=6430852

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92107303A Expired - Lifetime EP0512392B1 (de) 1991-05-02 1992-04-29 Schlammsaugwagen

Country Status (4)

Country Link
EP (1) EP0512392B1 (enrdf_load_stackoverflow)
AT (1) ATE120509T1 (enrdf_load_stackoverflow)
DE (2) DE4114384C1 (enrdf_load_stackoverflow)
DK (1) DK0512392T3 (enrdf_load_stackoverflow)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9215545U1 (de) * 1992-11-14 1993-01-28 Linz, Manfred, 8705 Zellingen Transportables Separatorgefäß zum Abscheiden von in Klärschlämmen o.dgl. enthaltenen massiven Gegenständen, z.B. Holzstücke, Steine usw.
DE4317409A1 (de) * 1993-05-18 1994-11-24 Hammonia Apparatebau Kroenke G Einrichtung zur Reinigung von Abwasserkanälen
DE19652585C2 (de) * 1996-12-17 2000-04-13 Bernhard Schmidt Vorrichtung zum Entlüften einer eine Flüssigkeit führenden Heberleitung
CN104234179B (zh) * 2014-09-28 2016-06-08 佛山市三水新明珠建陶工业有限公司 一种清除水沟淤泥的设备及方法
WO2018081906A1 (en) * 2016-11-04 2018-05-11 Omega Liquid Waste Solutions Inc. Cleaning vehicle and high pressure cleaning systems

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6515798A (enrdf_load_stackoverflow) * 1965-12-06 1967-06-07
DE1609112B1 (de) * 1966-07-19 1970-04-23 Keller & Knappich Gmbh Fahrzeug zum Kanalreinigen und Schlammsaugen
DE2648851C3 (de) * 1976-10-27 1979-04-05 Georg Ing.(Grad.) 8081 Tuerkenfeld Klass Fahrzeug zum Schlammentleeren und Reinigen
DE2719599C2 (de) * 1977-05-02 1979-05-03 Georg Ing.(Grad.) 8081 Tuerkenfeld Klass Fahrzeug zum Kanalreinigen und zum Schlammtransport
DE2918458C3 (de) * 1979-05-08 1983-04-28 Karl 8901 Welden Wiedemann Kanalreinigungsfahrzeug
DE3001325C2 (de) * 1980-01-16 1982-12-16 Karl 8901 Welden Wiedemann Kanalreinigungsfahrzeug
DE3238600C3 (de) * 1982-10-19 1995-02-23 Karl Wiedemann Vorrichtung zur Kanal- bzw. Grubenreinigung
AT391508B (de) * 1988-09-14 1990-10-25 M U T Ges M B H Schlammsauge- und hochdruckspuelfahrzeug zum reinigen von kanaelen od. dgl.
DE8903134U1 (de) * 1989-03-14 1989-05-18 Assmann, Peter, 7128 Lauffen Kanalreinigungsfahrzeug

Also Published As

Publication number Publication date
DE59201750D1 (de) 1995-05-04
EP0512392A1 (de) 1992-11-11
DK0512392T3 (da) 1995-06-12
DE4114384C1 (enrdf_load_stackoverflow) 1992-12-03
ATE120509T1 (de) 1995-04-15

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