EP0878587B1 - Vacuum sewage removal installation - Google Patents

Vacuum sewage removal installation Download PDF

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Publication number
EP0878587B1
EP0878587B1 EP98108444A EP98108444A EP0878587B1 EP 0878587 B1 EP0878587 B1 EP 0878587B1 EP 98108444 A EP98108444 A EP 98108444A EP 98108444 A EP98108444 A EP 98108444A EP 0878587 B1 EP0878587 B1 EP 0878587B1
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EP
European Patent Office
Prior art keywords
pressure
source
tank
intermediate tank
vacuum
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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
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EP98108444A
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German (de)
French (fr)
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EP0878587A1 (en
Inventor
Wilfried Dipl.-Ing. Schulz
Werner-Dietmar Dipl.-Ing. Ulferts
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Sterling Fluid Systems Germany GmbH
Sterling Fluid Systems GmbH
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Sterling Fluid Systems Germany GmbH
Sterling Fluid Systems GmbH
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Publication of EP0878587A1 publication Critical patent/EP0878587A1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63BSHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B29/00Accommodation for crew or passengers not otherwise provided for
    • B63B29/16Soil water discharges
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F1/00Methods, systems, or installations for draining-off sewage or storm water
    • E03F1/006Pneumatic sewage disposal systems; accessories specially adapted therefore

Definitions

  • the invention relates to a vacuum waste water discharge system with a connected to wastewater sources, constantly under pressure Recording tank that periodically in one Collection container can be emptied.
  • a vacuum waste water discharge system is known (US-A-5078174), where the wastewater from wastewater sources such as houses sucked into a vacuum tank under vacuum becomes.
  • the wastewater sources have their own, under atmospheric pressure standing gravity collection tanks, which only when needed be emptied into the vacuum sewage system; therefore, this does not have to be constantly receptive. For emptying of the receiving tank are those from the above. Disadvantageous reasons Dirty water pumps provided.
  • a wastewater discharge system in which a Vacuum tank with a waste water source is connected (DE-U-91 04 935). Except for the holding tank if the system has only one other container, into which the waste water from the receiving tank is pressurized is pumped. A constant willingness to accept is not ensured with this system.
  • the dirty water pump is thereby dispensable that the waste water in the conveyor path from the waste water sources to the collection container with no pump in contact comes.
  • the promotion from the receiving tank to the collecting container takes place through a pressure difference. So that the receiving tank anyway is always operational and pressurized can be a geodetically lower one and connected to it via a lockable drain line Assigned intermediate tank, which with a drain line the collection container is connected.
  • the drain pipe opened so that the accruing in the receiving tank Waste water drains into the intermediate tank due to its gravity. If the emptying is to take place, the intermediate tank shut off from the receiving tank, and possibly the drain line opened to the collection container. Then there will be a pressure difference created the contents of the intermediate tank in the Collection container drives. Then the intermediate tank with the Receiving tank reconnected.
  • a control device can be provided for this purpose be, which actuates the shut-off devices and the pressure difference and finally the one to initiate the Emptying required operations.
  • the arrangement is advantageously made such that the pressure source to create a super-atmospheric Pressure is set up while the collection container with the Atmosphere in pressure equalization. In this case it is necessary the drain line during normal operation close.
  • negative and positive pressure are according to another feature of the invention separate, preferably identical vacuum pumps or compressors intended. Liquid ring machines are particularly suitable for this. Instead, it can also be provided that a vacuum pump normally used as a vacuum source during the emptying periods as a compressor for Generation of the superatmospheric pressure is switchable.
  • the receiving tank or one in addition to this provided buffer container so large that the vacuum contained therein for the recording operation during the emptying phases are sufficient.
  • a gas pump used as a vacuum source constantly to be conveyed into a buffer container, which as Pressure source serves in the emptying periods. This buffer tank empties during each emptying period and then fills up to the next one.
  • the collection container is under atmospheric pressure or a pressure close to it.
  • the pressure source with the help of which the emptying is carried out in this case a correspondingly higher pressure, which is several bars can be if there are major differences in height or distances are to be overcome.
  • the invention wants such statements not exclude where the collection container during normal operation as well as the holding tank and the intermediate tank is under vacuum and the discharge pressure difference is generated in that the of the receiving tank locked intermediate tank is ventilated atmospherically. In in this case the drain line from the intermediate tank is required not be lockable to the collection container.
  • a line 3 with a check valve 4 is the receiving tank 1 on the suction side of a water ring pump 5 connected, which applies a vacuum to it.
  • the vacuum pump 5 is on the pressure side connected to a liquid separator 7 via line 6, which the gas extracted from the receptacle from the separates operating fluid entrained in the pump 5.
  • the Gas is passed into the atmosphere via line 8, to the extent it is not, as described below, for other purposes is used.
  • the accumulating in the liquid separator 7 Liquid is returned to pump 5 via line 9. Loss of liquid is via a fresh water connection 10 depending on the liquid level in the liquid separator 7 replaced.
  • the vacuum pump 5, in its place depending on the required Performance and operational security also include a variety of pumps is generally in constant operation in the Times when wastewater can accumulate.
  • the receiving tank 1 is therefore always ready to take pictures.
  • a line 11 with shut-off device 12 connected to an intermediate tank 13.
  • Line 11 including shut-off device 12 is dimensioned and arranged so that the waste water accumulating in the holding tank 1 together with all Foreign matter contained therein constantly in the intermediate tank 13 expires.
  • a gas suspension line 14 with shut-off device 15 leads the gas displaced in the intermediate tank 13 into the receiving tank 1 back so that the gravitational drain through line 11 is not inhibited.
  • a line 16 leading from the intermediate tank 13 extends into the upper area of the receiving tank 1 contains a pressure sensor 17, the signal of the static pressure in Depicts intermediate tank 13 and, if appropriate, in the receiving tank 1. When a certain level is reached, that of the filling corresponds to the intermediate tank 13, the emptying process initiated. If a certain higher pressure is found is that the filling of the receiving tank 1 signals that must not occur when emptying takes place normally, this can be interpreted as a fault signal become.
  • the intermediate tank 13 is emptied via an emptying line 19 with shut-off device 20 instead of that to that leads shown collection container.
  • a compressor 21 is provided (there may also be several), preferably the same like the vacuum pump 5 from a liquid ring machine can be formed. It is expediently identical to this.
  • the compressor 21 is on the suction side via a suction line 22 with check valve 23 to the exhaust line 8 of the vacuum pump 5 connected. Its printed page leads over one Line 24 to the liquid separator 25, of which the separated Operating fluid via line 26 in the compressor 21 is returned. Loss of operating fluid will balanced over the fresh water line 27. From the liquid separator 25 leads a compressed air line 28 with a membrane shut-off valve 29 to the intermediate tank 13 or to it connected line 11.
  • a control device 18 is provided, which is periodic controls the emptying of the intermediate tank 13. she will expediently caused by the pressure sensor 17 indicates a predetermined fill level of the intermediate tank 13. Instead, it can also be provided that in each case emptying takes place after predetermined time periods. If according to one mentioned in the introduction to the description Embodiment no separate compressor is provided but pumps the vacuum pump 5 into a pressure vessel, that serves as a pressure source for emptying, can Drainage game can also be caused by the fact that in this Pressure vessel measured reaching a predetermined pressure becomes.
  • the control device first causes the closing the shut-off devices 12 and 15 in the lines 11 and 14, the connect the receiving tank 1 to the intermediate tank 13.
  • the Line 16 is closed anyway by the pressure sensor. After that opens the normally closed shut-off device 29 in line 28 leading from the pressure source to the intermediate tank 13 leads and switches on the compressor 21. After that the shut-off device 20 in the drain line 19 opened.
  • the overpressure generated by the compressor 21 in the intermediate tank 13 then drives its content through the drain line 19 out.
  • the sensor 17 reports that the liquid level in the Intermediate tank 13 has dropped sufficiently, or if necessary even after a sufficient period of time the emptying phase is ended by the compressor 21 being switched off is, and the shut-off devices 20 and 29 are closed and the shut-off devices 12 and 15 opened.
  • the compressor 21 removes that from it during operation conveyed air of line 8 or, if this is not sufficient, the atmosphere.

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  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)

Description

Die Erfindung betrifft eine Vakuum-Abwasserabführungsanlage mit einem an Abwasserquellen angeschlossenen, ständig unterdruckbeaufschlagten Aufnahmetank, der periodisch in einen Sammelbehälter entleerbar ist.The invention relates to a vacuum waste water discharge system with a connected to wastewater sources, constantly under pressure Recording tank that periodically in one Collection container can be emptied.

Bei aus offenkundiger Vorbenutzung bekannten, beispielsweise auf Schiffen installierten Vakuum-Abwasserabführungsanlagen, wird das Abwasser von Toiletten, Waschbecken und dergleichen zunächst in einen Aufnahmetank abgesaugt, der im Hinblick auf eine ununterbrochene Betriebsbereitschaft ständig mit Unterdruck beaufschlagt ist. Dieser wird mittels einer Schmutzwasserpumpe periodisch in einen Sammelbehälter entleert. Die Schmutzwasserpumpe ist verstopfungs- und beschädigungsgefährdet.In the case of known prior use, for example vacuum sewage disposal systems installed on ships, is the wastewater from toilets, sinks and the like first sucked into a receiving tank, which with regard to an uninterrupted operational readiness constantly with negative pressure is acted upon. This is done using a dirty water pump periodically emptied into a collection container. The Dirty water pump is at risk of clogging and damage.

Ferner ist eine Vakuum-Abwasserabführungsanlage bekannt (US-A-5078174), bei der das Abwasser von Abwasserquellen wie Häusern in einen unterdruckbeaufschlagten Aufnahmetank gesaugt wird. Die Abwasserquellen weisen eigene, unter Atmosphärendruck stehende Schwerkraftsammeltanks auf, die erst bei Bedarf in die Vakuum-Abwasserabführungsanlage entleert werden; diese muß daher nicht ständig aufnahmebereit sein. Zur Entleerung des Aufnahmetanks sind die aus o. g. Gründen nachteiligen Schmutzwasserpumpen vorgesehen. Furthermore, a vacuum waste water discharge system is known (US-A-5078174), where the wastewater from wastewater sources such as houses sucked into a vacuum tank under vacuum becomes. The wastewater sources have their own, under atmospheric pressure standing gravity collection tanks, which only when needed be emptied into the vacuum sewage system; therefore, this does not have to be constantly receptive. For emptying of the receiving tank are those from the above. Disadvantageous reasons Dirty water pumps provided.

Weiter ist bekannt eine Abwasserabführanlage, bei der ein mit Unterdruck beaufschlagter Aufnahmetank mit einer Abwasserquelle in Verbindung steht (DE-U-91 04 935). Außer dem Aufnahmetank weist die Anlage nur einen weiteren Behälter auf, in den das Abwasser aus dem Aufnahmetank unter Überdruckbeaufschlagung gepumpt wird. Eine ständige Aufnahmebereitschaft ist bei dieser Anlage nicht sichergestellt.Furthermore, a wastewater discharge system is known, in which a Vacuum tank with a waste water source is connected (DE-U-91 04 935). Except for the holding tank if the system has only one other container, into which the waste water from the receiving tank is pressurized is pumped. A constant willingness to accept is not ensured with this system.

Diese Nachteile vermeidet die Erfindung durch die Merkmalskombination des Anspruchs 1. Die Schmutzwasserpumpe wird dadurch entbehrlich, daß das Abwasser im Förderweg von den Abwasserquellen zum Sammelbehälter mit keiner Pumpe in Berührung kommt. Die Förderung vom Aufnahmetank zum Sammelbehälter erfolgt durch eine Druckdifferenz. Damit trotzdem der Aufnahmetank ständig betriebsbereit ist und mit Unterdruck beaufschlagt sein kann, ist ihm ein geodätisch tiefer angeordneter und mit ihm über eine absperrbare Ablaufleitung verbundener Zwischentank zugeordnet, der über eine Entleerungsleitung mit dem Sammelbehälter verbunden ist. Normalerweise ist die Ablaufleitung geöffnet, so daß das im Aufnahmetank anfallende Abwasser aufgrund seiner Schwerkraft in den Zwischentank abläuft. Wenn die Entleerung erfolgen soll, wird der Zwischentank vom Aufnahmetank abgesperrt, und ggf. die Entleerungsleitung zum Sammelbehälter geöffnet. Es wird dann eine Druckdifferenz angelegt, die den Inhalt des Zwischentanks in den Sammelbehälter treibt. Danach wird der Zwischentank mit dem Aufnahmetank wieder in Verbindung gesetzt.The invention avoids these disadvantages through the combination of features of claim 1. The dirty water pump is thereby dispensable that the waste water in the conveyor path from the waste water sources to the collection container with no pump in contact comes. The promotion from the receiving tank to the collecting container takes place through a pressure difference. So that the receiving tank anyway is always operational and pressurized can be a geodetically lower one and connected to it via a lockable drain line Assigned intermediate tank, which with a drain line the collection container is connected. Usually the drain pipe opened so that the accruing in the receiving tank Waste water drains into the intermediate tank due to its gravity. If the emptying is to take place, the intermediate tank shut off from the receiving tank, and possibly the drain line opened to the collection container. Then there will be a pressure difference created the contents of the intermediate tank in the Collection container drives. Then the intermediate tank with the Receiving tank reconnected.

Es ist bei Gebäudesanitäranlagen bekannt, Zwischentanks unterhalb von Aufnahmetanks anzuordnen und mittels Überdruckbeaufschlagung zu entleeren (FR-A-2050775); jedoch werden bei diesen Anlagen die Aufnahmetanks mittels Schwerkraft beschickt. Eine Unterdruckquelle und den Unterdruck schaltende Ventile sind nicht vorgesehen. Eine ständige Aufnahmebereitschaft des Aufnahmetanks ist schon durch die Wirkung der Schwerkraft sichergestellt und bedarf keiner ständigen Unterdruckversorgung. Eine Kombination aus Unter- und Überdrucksystem legt diese bekannte Anlage nicht nahe.It is known in building sanitation systems, intermediate tanks below of receiving tanks to be arranged and by means of pressurization to empty (FR-A-2050775); however, at these systems are charged with gravity. A vacuum source and the vacuum switching Valves are not provided. A constant willingness to accept of the receiving tank is already by the effect of Gravity ensured and does not require a constant vacuum supply. A combination of negative and positive pressure systems does not suggest this well-known system.

Die periodische Entleerung erfolgt zweckmäßigerweise selbsttätig. Zu diesem Zweck kann eine Steuereinrichtung vorgesehen sein, die die Absperrorgane betätigt und die Druckdifferenz zur Einwirkung bringt und schließlich die zum Einleiten der Entleerung erforderlichen Vorgänge wieder rückgängig macht. Dabei ist die Anordnung vorteilhafterweise so getroffen, daß die Druckquelle zur Erzeugung eines überatmosphärischen Drucks eingerichtet ist, während der Sammelbehälter mit der Atmosphäre in Druckausgleich steht. In diesem Fall ist es erforderlich, die Entleerungsleitung während des normalen Betriebs zu schließen. Für die Erzeugung des Unter- und Überdrucks sind dabei nach einem weiteren Merkmal der Erfindung gesonderte, vorzugsweise baugleiche Vakuumpumpen bzw. Kompressoren vorgesehen. Dafür eignen sich insbesondere Flüssigkeitsringmaschinen. Statt dessen kann auch vorgesehen sein, daß eine normalerweise als Unterdruckquelle eingesetzte Vakuumpumpe während der Entleerungsperioden als Kompressor zur Erzeugung des überatmosphärischen Drucks schaltbar ist. In diesem Fall wird der Aufnahmetank oder ein zusätzlich zu diesem vorgesehener Pufferbehälter so groß ausgebildet, daß der darin befindliche Unterdruck für den Aufnahmebetrieb während der Entleerungsphasen ausreicht. Statt dessen ist es auch möglich, eine als Unterdruckquelle eingesetzte Gaspumpe ständig in einen Pufferbehälter fördern zu lassen, der als Druckquelle in den Entleerungsperioden dient. Dieser Pufferbehälter entleert sich während jeder Entleerungsperiode und füllt sich anschließend bis zur nächsten wieder.The periodic emptying is expediently carried out automatically. A control device can be provided for this purpose be, which actuates the shut-off devices and the pressure difference and finally the one to initiate the Emptying required operations. The arrangement is advantageously made such that the pressure source to create a super-atmospheric Pressure is set up while the collection container with the Atmosphere in pressure equalization. In this case it is necessary the drain line during normal operation close. For the generation of negative and positive pressure are according to another feature of the invention separate, preferably identical vacuum pumps or compressors intended. Liquid ring machines are particularly suitable for this. Instead, it can also be provided that a vacuum pump normally used as a vacuum source during the emptying periods as a compressor for Generation of the superatmospheric pressure is switchable. In In this case, the receiving tank or one in addition to this provided buffer container so large that the vacuum contained therein for the recording operation during the emptying phases are sufficient. Instead, it is too possible, a gas pump used as a vacuum source constantly to be conveyed into a buffer container, which as Pressure source serves in the emptying periods. This buffer tank empties during each emptying period and then fills up to the next one.

Bei den soeben beschriebenen Ausführungsmöglichkeiten wurde vorausgesetzt, daß der Sammelbehälter sich unter Atmosphärendruck oder einem diesem nahen Druck befindet. Die Druckquelle, mit deren Hilfe die Entleerung betrieben wird, hat in diesem Fall einen entsprechend höheren Druck, der mehrere Bar betragen kann, wenn größere Höhenunterschiede oder Entfernungen zu überwinden sind. Die Erfindung will aber solche Ausführungen nicht ausschließen, bei denen der Sammelbehälter während des normalen Betriebs ebenso wie der Aufnahmetank und der Zwischentank unter Unterdruck steht und die Entleerungsdruckdifferenz dadurch erzeugt wird, daß der vom Aufnahmetank abgeschlossene Zwischentank atmosphärisch belüftet wird. In diesem Fall braucht die Entleerungsleitung vom Zwischentank zum Sammelbehälter ggf. nicht absperrbar zu sein.With the execution options just described was provided that the collection container is under atmospheric pressure or a pressure close to it. The pressure source, with the help of which the emptying is carried out in this case a correspondingly higher pressure, which is several bars can be if there are major differences in height or distances are to be overcome. However, the invention wants such statements not exclude where the collection container during normal operation as well as the holding tank and the intermediate tank is under vacuum and the discharge pressure difference is generated in that the of the receiving tank locked intermediate tank is ventilated atmospherically. In in this case the drain line from the intermediate tank is required not be lockable to the collection container.

Die Erfindung wird im folgenden näher unter Bezugnahme auf die Zeichnung erläutert, die in einer Figur ein vorteilhaftes Ausführungsbeispiel schematisch veranschaulicht.The invention will now be described in more detail with reference to the drawing explains the advantageous in a figure Exemplary embodiment schematically illustrated.

In einen Abwasser-Aufnahmetank 1 mündet eine Mehrzahl von Abwasserleitungen 2. Über eine Leitung 3 mit Rückschlagventil 4 ist der Aufnahmetank 1 an die Saugseite einer Wasserringpumpe 5 angeschlossen, die ihn mit Vakuum beaufschlagt. Es können bekannte, nicht dargestellte Einrichtungen zur Begrenzung des Vakuums vorgesehen sein. Druckseitig ist die Vakuumpumpe 5 über Leitung 6 an einen Flüssigkeitsabscheider 7 angeschlossen, der das aus dem Aufnahmebehälter abgesaugte Gas von der in der Pumpe 5 mitgerissenen Betriebsflüssigkeit trennt. Das Gas wird über die Leitung 8 in die Atmosphäre geleitet, soweit es nicht, wie weiter unten beschrieben, für andere Zwekke verwendet wird. Die im Flüssigkeitsabscheider 7 anfallende Flüssigkeit wird über Leitung 9 in die Pumpe 5 zurückgeführt. Flüssigkeitsverlust wird über einen Frischwasseranschluß 10 abhängig vom Flüssigkeitsstand im Flüssigkeitsabscheider 7 ersetzt.A plurality of sewage pipes open into a sewage holding tank 1 2. Via a line 3 with a check valve 4 is the receiving tank 1 on the suction side of a water ring pump 5 connected, which applies a vacuum to it. It can known, not shown facilities for limiting the Vacuum can be provided. The vacuum pump 5 is on the pressure side connected to a liquid separator 7 via line 6, which the gas extracted from the receptacle from the separates operating fluid entrained in the pump 5. The Gas is passed into the atmosphere via line 8, to the extent it is not, as described below, for other purposes is used. The accumulating in the liquid separator 7 Liquid is returned to pump 5 via line 9. Loss of liquid is via a fresh water connection 10 depending on the liquid level in the liquid separator 7 replaced.

Die Vakuumpumpe 5, an deren Stelle je nach der geforderten Leistung und Betriebssicherheit auch eine Mehrzahl von Pumpen treten kann, ist im allgemeinen ständig in Betrieb in den Zeiten, in denen Abwasser anfallen kann. Der Aufnahmetank 1 ist daher auch ständig aufnahmebereit. An geodätisch tiefer gelegener Stelle ist er über eine Leitung 11 mit Absperrorgan 12 an einen Zwischentank 13 angeschlossen. Die Leitung 11 samt Absperrorgan 12 ist so dimensioniert und angeordnet, daß das im Aufnahmetank 1 anfallende Abwasser samt sämtlichen darin enthaltenen Fremdstoffen ständig in den Zwischentank 13 abläuft. Eine Gaspendelleitung 14 mit Absperrorgan 15 führt das im Zwischentank 13 verdrängte Gas in den Aufnahmetank 1 zurück, damit der Schwerkraftabfluß durch die Leitung 11 nicht gehemmt wird. Eine Leitung 16, die vom Zwischentank 13 bis in den oberen Bereich des Aufnahmetanks 1 reicht, enthält einen Drucksensor 17, dessen Signal den statischen Druck im Zwischentank 13 und gegebenenfalls im Aufnahmetank 1 abbildet. Wenn ein bestimmter Füllstand erreicht ist, der der Füllung des Zwischentanks 13 entspricht, wird der Entleerungsvorgang eingeleitet. Wenn ein bestimmter höherer Druck festgestellt wird, der eine zu hohe Füllung des Aufnahmetanks 1 signalisiert, die nicht auftreten darf, wenn die Entleerung normal stattfindet, kann dies als Störungssignal gewertet werden. The vacuum pump 5, in its place depending on the required Performance and operational security also include a variety of pumps is generally in constant operation in the Times when wastewater can accumulate. The receiving tank 1 is therefore always ready to take pictures. At geodetically deeper located point is via a line 11 with shut-off device 12 connected to an intermediate tank 13. Line 11 including shut-off device 12 is dimensioned and arranged so that the waste water accumulating in the holding tank 1 together with all Foreign matter contained therein constantly in the intermediate tank 13 expires. A gas suspension line 14 with shut-off device 15 leads the gas displaced in the intermediate tank 13 into the receiving tank 1 back so that the gravitational drain through line 11 is not inhibited. A line 16 leading from the intermediate tank 13 extends into the upper area of the receiving tank 1 contains a pressure sensor 17, the signal of the static pressure in Depicts intermediate tank 13 and, if appropriate, in the receiving tank 1. When a certain level is reached, that of the filling corresponds to the intermediate tank 13, the emptying process initiated. If a certain higher pressure is found is that the filling of the receiving tank 1 signals that must not occur when emptying takes place normally, this can be interpreted as a fault signal become.

Die Entleerung des Zwischentanks 13 findet über eine Entleerungsleitung 19 mit Absperrorgan 20 statt, die zu dem nicht gezeigten Sammelbehälter führt. Es ist ein Kompressor 21 vorgesehen (es können auch mehrere sein), der vorzugsweise ebenso wie die Vakuumpumpe 5 von einer Flüssigkeitsringmaschine gebildet sein kann. Zweckmäßigerweise ist er mit dieser baugleich. Saugseitig ist der Kompressor 21 über eine Saugleitung 22 mit Rückschlagventil 23 an die Abgasleitung 8 der Vakuumpumpe 5 angeschlossen. Seine Druckseite führt über eine Leitung 24 zum Flüssigkeitsabscheider 25, von dem die abgeschiedene Betriebsflüssigkeit über Leitung 26 in den Kompressor 21 zurückgeführt wird. Betriebsflüssigkeitsverlust wird über die Frischwasserleitung 27 ausgeglichen. Vom Flüssigkeitsabscheider 25 führt eine Druckluftleitung 28 mit Membran-Absperrventil 29 zum Zwischentank 13 bzw. zu der damit verbundenen Leitung 11.The intermediate tank 13 is emptied via an emptying line 19 with shut-off device 20 instead of that to that leads shown collection container. A compressor 21 is provided (there may also be several), preferably the same like the vacuum pump 5 from a liquid ring machine can be formed. It is expediently identical to this. The compressor 21 is on the suction side via a suction line 22 with check valve 23 to the exhaust line 8 of the vacuum pump 5 connected. Its printed page leads over one Line 24 to the liquid separator 25, of which the separated Operating fluid via line 26 in the compressor 21 is returned. Loss of operating fluid will balanced over the fresh water line 27. From the liquid separator 25 leads a compressed air line 28 with a membrane shut-off valve 29 to the intermediate tank 13 or to it connected line 11.

Es ist eine Steuerrungseinrichtung 18 vorgesehen, die periodisch die Entleerung des Zwischentanks 13 steuert. Sie wird dazu zweckmäßigerweise dadurch veranlaßt, daß der Drucksensor 17 einen vorbestimmten Füllstand des Zwischentanks 13 anzeigt. Statt dessen kann auch vorgesehen sein, daß jeweils nach vorbestimmten Zeitperioden die Entleerung stattfindet. Wenn gemäß einem in der Beschreibungseinleitung genannten Ausführungsbeispiel kein gesonderter Kompressor vorgesehen ist, sondern die Vakuumpumpe 5 in einen Druckbehälter fördert, der als Druckquelle für die Entleerung dient, kann das Entleerungsspiel auch dadurch veranlaßt werden, daß in diesem Druckbehälter das Erreichen eines vorbestimmten Drucks gemessen wird.A control device 18 is provided, which is periodic controls the emptying of the intermediate tank 13. she will expediently caused by the pressure sensor 17 indicates a predetermined fill level of the intermediate tank 13. Instead, it can also be provided that in each case emptying takes place after predetermined time periods. If according to one mentioned in the introduction to the description Embodiment no separate compressor is provided but pumps the vacuum pump 5 into a pressure vessel, that serves as a pressure source for emptying, can Drainage game can also be caused by the fact that in this Pressure vessel measured reaching a predetermined pressure becomes.

Die Steuerungseinrichtung veranlaßt zunächst das Schließen der Absperrorgane 12 und 15 in den Leitungen 11 und 14, die den Aufnahmetank 1 mit dem Zwischentank 13 verbinden. Die Leitung 16 ist ohnehin durch den Drucksensor geschlossen. Danach öffnet sie das normalerweise geschlossene Absperrorgan 29 in der Leitung 28, die von der Druckquelle zum Zwischentank 13 führt und schaltet den Kompressor 21 ein. Danach wird das Absperrorgan 20 in der Entleerungsleitung 19 geöffnet. Der vom Kompressor 21 im Zwischentank 13 erzeugte Überdruck treibt dann dessen Inhalt durch die Entleerungsleitung 19 aus. Wenn der Sensor 17 meldet, daß der Flüssigkeitsstand im Zwischentank 13 hinreichend abgesunken ist, oder gegebenenfalls auch nach Ablauf einer hinreichenden Zeitspanne wird die Entleerungsphase beendet, indem der Kompressor 21 abgeschaltet wird, und werden die Absperrorgane 20 und 29 geschlossen und die Absperrorgane 12 und 15 geöffnet.The control device first causes the closing the shut-off devices 12 and 15 in the lines 11 and 14, the connect the receiving tank 1 to the intermediate tank 13. The Line 16 is closed anyway by the pressure sensor. After that opens the normally closed shut-off device 29 in line 28 leading from the pressure source to the intermediate tank 13 leads and switches on the compressor 21. After that the shut-off device 20 in the drain line 19 opened. The overpressure generated by the compressor 21 in the intermediate tank 13 then drives its content through the drain line 19 out. When the sensor 17 reports that the liquid level in the Intermediate tank 13 has dropped sufficiently, or if necessary even after a sufficient period of time the emptying phase is ended by the compressor 21 being switched off is, and the shut-off devices 20 and 29 are closed and the shut-off devices 12 and 15 opened.

Der Kompressor 21 entnimmt während des Betriebs die vom ihm geförderte Luft der Leitung 8 bzw., wenn diese nicht ausreicht, der Atmosphäre.The compressor 21 removes that from it during operation conveyed air of line 8 or, if this is not sufficient, the atmosphere.

Das geschilderte System ist wenig störanfällig, weil der fremdkörperhaltige Flüssigkeitsstrom die Pumpen nicht berührt.The system described is not prone to failure because of the Foreign matter-containing liquid flow does not touch the pumps.

Claims (6)

  1. A vacuum sewage disposal installation, having a receiving tank (1) connected to sewage sources and permanently acted upon by underpressure, which receiving tank can be periodically drained into a collection vessel, characterised in that there is provided an intermediate tank (13) arranged geodetically lower down than the receiving tank (1) and connected to the latter via an outlet duct (11) which can be shut off, which intermediate tank is connected to the collection vessel via a drain duct (19), and in that a pressure source (21) for creating a pressure above the pressure prevailing in the collection vessel is connected to the intermediate tank (13) via a duct (28) which can be shut off.
  2. An installation according to Claim 1, characterised in that the pressure source (21) is set up to create a pressure above atmospheric pressure and the collection vessel at pressure balance with the atmosphere can be shut off from the intermediate tank (13).
  3. An installation according to Claim 2, characterised in that separate vacuum pumps and compressors, preferably of like construction, are provided as an underpressure source and an overpressure source.
  4. An installation according to Claim 2, characterised in that a vacuum pump, normally used as the undepressure source, can be operated during the draining periods as a compressor for creating the pressure above atmospheric pressure.
  5. An installation according to Claim 2, characterised in that a gas pump used as the underpressure source feeds into a buffer vessel which is operated as a pressure source.
  6. An installation according to any one of Claims 1 to 5, characterised in that a control device (18) is provided for the automatic control of the draining functions.
EP98108444A 1997-05-12 1998-05-08 Vacuum sewage removal installation Expired - Lifetime EP0878587B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29708445U DE29708445U1 (en) 1997-05-12 1997-05-12 Waste water discharge system
DE29708445U 1997-05-12

Publications (2)

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EP0878587A1 EP0878587A1 (en) 1998-11-18
EP0878587B1 true EP0878587B1 (en) 2003-04-23

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EP98108444A Expired - Lifetime EP0878587B1 (en) 1997-05-12 1998-05-08 Vacuum sewage removal installation

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DE (2) DE29708445U1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6065493A (en) * 1998-05-22 2000-05-23 Sealand Technology, Inc. Vacuum relief valve for sewage holding tank
FI20001759A0 (en) * 2000-08-07 2000-08-07 Evac Int Oy The vacuum sewer system
DE102004005525B4 (en) * 2004-02-03 2009-10-15 Rolf-Dieter Klaeke Apparatus and method for collecting waste water on ships by means of vacuum
HRPK20050906B3 (en) * 2005-10-18 2009-06-30 Tvornica Turbina D.O.O. Marine waste water treatment device
DE102011016243A1 (en) 2011-04-06 2012-10-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Drainage system for use in e.g. home, has waste water tank into which sewage/organic waste is sucked, and devices for generating required low and high pressure on respective suction and pressing sides for sucking and discharging sewage

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2050775A5 (en) 1969-06-24 1971-04-02 Baudot Hardoll
US5078174A (en) 1989-06-15 1992-01-07 Burton Mechanical Contractors, Inc. Vacuum sewerage system having non-jamming vacuum valves with tapered plungers
DE9104935U1 (en) * 1991-04-23 1991-08-29 Haatanen, Rauno, 2000 Hamburg Drainage system for the drain mass of a drain mass producing unit

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EP0878587A1 (en) 1998-11-18
DE29708445U1 (en) 1998-09-10
DE59808011D1 (en) 2003-05-28

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