EP0460271A1 - Procédé et dispositif pour pomper du liquide d'un récipient - Google Patents

Procédé et dispositif pour pomper du liquide d'un récipient Download PDF

Info

Publication number
EP0460271A1
EP0460271A1 EP90110870A EP90110870A EP0460271A1 EP 0460271 A1 EP0460271 A1 EP 0460271A1 EP 90110870 A EP90110870 A EP 90110870A EP 90110870 A EP90110870 A EP 90110870A EP 0460271 A1 EP0460271 A1 EP 0460271A1
Authority
EP
European Patent Office
Prior art keywords
line
liquid
container
opening
gas mixture
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.)
Granted
Application number
EP90110870A
Other languages
German (de)
English (en)
Other versions
EP0460271B1 (fr
Inventor
Lothar Galler
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.)
Wilhelm Roediger & Co Haustechnik GmbH
Original Assignee
Wilhelm Roediger & Co Haustechnik GmbH
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 Wilhelm Roediger & Co Haustechnik GmbH filed Critical Wilhelm Roediger & Co Haustechnik GmbH
Priority to DE59010093T priority Critical patent/DE59010093D1/de
Priority to EP19900110870 priority patent/EP0460271B1/fr
Publication of EP0460271A1 publication Critical patent/EP0460271A1/fr
Application granted granted Critical
Publication of EP0460271B1 publication Critical patent/EP0460271B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04F—PUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
    • F04F3/00—Pumps using negative pressure acting directly on the liquid to be pumped

Definitions

  • the invention relates to a method and a device for sucking off liquid from a container via a (first) line which can be connected to a vacuum source and which has an opening in the region of the bottom of the container.
  • Vacuum extraction systems are used to discharge waste water or other liquids from a ventilated container without a natural gradient being available. This is not only used in stationary areas, but also in mobile facilities such as Ships, trains or airplanes.
  • the liquid collected in a container such as fecal water, is fed from a tank via a vacuum line to a further collecting container or the like, in order to then e.g. to be pumped out.
  • the liquid accumulated in the container can be suctioned off via a riser pipe, which in turn can be connected to a vacuum source if necessary.
  • Shut-off devices such as valves are provided between the vacuum source and the riser pipe.
  • a liquid gas mixture is drawn in via the riser pipe. This means that liquid can accumulate in front of the shut-off device, even if the suction is carried out at intervals, that is to say it is waited for liquids from the liquid gas mixture to have accumulated in front of the shut-off device, in order to then extract further liquid by briefly opening the shut-off device.
  • the object of the present invention is to develop a method and a device of the type described at the outset in such a way that, without any control engineering effort and with structurally simple measures, it is ensured that, despite the suction of a liquid gas mixture, only a small amount of residual liquid collects in the line suctioning the liquid , which cannot lead to impairment of the device even in the case of solidification, the undesired frequent “sucking in” being to be avoided.
  • the problem is to be solved that when liquid is sucked out of a ventilated container it is prevented that larger amounts of liquid remain in the line after the suctioning process has ended.
  • the solution of the task or the problem provides procedurally that after sucking in the liquid gas mixture via a starting from the first line and filled with part of the liquid from the first line and the part of the liquid due to gravity from the second line into the gravity Container leaks and gas is sucked in via the second line, preventing further suction of the liquid gas mixture.
  • the teaching according to the invention ensures that the second line emptying into the first line ensures that if the undesired liquid gas mixture is sucked in via the first line, further suction via the first line is prevented by essentially only gasing via the second line is sucked in. Since this is lighter than the liquid gas mixture, it is largely ensured that only very little residual water can accumulate in the line leading to the vacuum source, which water cannot lead to impairment even if e.g. solidification occurs at low temperatures. Consequently, no complex switching mechanisms are required to ensure that the liquid gas mixture is not sucked in, nor are special insulation measures or the like required in the area of the line in which liquid can accumulate.
  • a device for aspirating liquid from a container via a (first) line which can be connected to an underpressure source and has an opening running at a distance from the bottom of the container is characterized in that a further (second) line starts from the first line that the second line one Has opening running above the opening of the first line and that the opening of the second line can be closed by an element due to liquid buoyancy.
  • a second line connected to the section of the first line which runs preferably in the container is arranged, but which ends above the opening of the first line.
  • the opening of the first line via which the liquid itself is sucked off, lies between the opening of the second line and the bottom of the container.
  • the opening of the second line starting from the first line can now be closed with an element such as a floating body, specifically when the opening is covered with liquid.
  • the element i.e. the floating body, is e.g. surrounded by a picture like a cage, which starts from the second line.
  • the length of the second line and thus the weight of the water column present in this is now selected so that the negative pressure prevailing in the first line is overcome and thus the weight of the liquid column pushes the element closing the opening away, so that the liquid from the second line flows into the container.
  • gas can be sucked in via the second line located higher up, so that no further liquid / gas mixture is conveyed into the suction line via the section of the first line running in the container. Should If the opening of the first line is still slightly immersed in the liquid, only a small water column can be observed in the area of the opening.
  • the teaching according to the invention consequently provides an automatic and almost instantaneous switchover of the suction of a liquid gas mixture to a suction of only gas, which ensures that no significant amount of liquid can accumulate in the suction line, especially before or possibly after the shut-off device. At the same time, the unwanted suction, which causes unnecessary pressure losses in the vacuum system, is no longer necessary.
  • the amount of liquid accumulated in the second line and flowing back into the container has a volume which corresponds to that in order to refill the container to such an extent that the opening of the first line is closed again by liquid in such a way that further suction of the liquid gas mixture is avoided.
  • the container (10) can be a cuboid and cylindrical, ventilated container in which e.g. via supply lines, not shown, in mobile devices such as Railway wagons, ships or airplanes, existing washing facilities or toilet facilities, waste water (12) is accumulated.
  • a suction line (14) is provided which comprises a section (16) which runs substantially vertically inside the container (10) and a section (18) which extends outside the container (10) and which extends over a sink such as a siphon (20) can be connected to a vacuum source (connection 22), not shown.
  • a shut-off device e.g. Valve (24) is arranged, which is then opened when the container (10) is to be emptied.
  • a second line (28) extends through a connecting piece such as a T-piece (26), which approximately inside the container (10) runs parallel to the riser pipe (16).
  • the riser pipe (16) opens with its opening (30) at a shorter distance from the tank bottom (32) than the opening (34) of the second line (28).
  • the opening (34) of the line (28) can be closed with a float (36) as long as the opening (30) is immersed in the liquid (12).
  • the floating body (36) is surrounded by a receptacle such as a cage (38) which starts from the second line (28). This ensures that the float (36) can close the opening (34) to the desired extent.
  • the cage (38) has the necessary openings so that liquid can penetrate into the interior of the cage and so that the floating body (36) can close the opening (34).
  • the shape of the openings is chosen so that clogging by solids present in the liquid (12) is not possible. Should appropriate residues nevertheless get into the area between the float (36) and the opening (34), the suction effect there will result in a quasi self-cleaning of the float (36), which in turn can seal the opening (34) tightly.
  • the suction line (14) is connected to a vacuum source via the connection (22).
  • the shut-off device (24) is opened. Liquid is then sucked off through the opening (30) of the riser pipe (16).
  • the second line (28) is closed via the floating body (36). Nevertheless, liquid collects in the line (28) and flows into the line (28) via the connection (26).
  • the liquid level in the container (10) drops. If the liquid level is below the opening (34) of the line (28), this will continue to be closed by the floating body (36) due to the negative pressure prevailing in the suction line (14).
  • Suction line (14) Due to the pressure drop in the Suction line (14) can be closed by a control, not shown, the shut-off device (24).
  • the container (10) can then be refilled in order to carry out the previously described suction process after it has been filled.
  • the container (10) can have a height of 150 cm.
  • the diameter can be 80 to 100 cm.
  • the distance between the openings (30) and (32) only needs a few cm, e.g. 5 cm in order to enable the automatic switching of the suction from liquid gas mixture to gas proposed according to the invention.
  • the length of the line (28) should be selected so that the gravity pressure of the liquid column is greater than the negative pressure prevailing in the suction line (14) when the liquid gas mixture is drawn in.
  • the riser pipe (16) can have a bore provided with the reference number (40), through which it is to be ensured that the container (10) cannot be emptied if the section (18) running outside the container (14) ) e.g. has a leak in the depression or breaks.
  • the bore (40) prevents the lifting effect.
  • the bore (40) has a clear diameter which does not allow a noticeable reduction in pressure within the line (14) during suction, which would otherwise impair the suction effect when emptying the container (10).
  • the teaching according to the invention can be implemented if the first line runs outside the container and only opens into the bottom region thereof.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)
EP19900110870 1990-06-08 1990-06-08 Procédé et dispositif pour pomper du liquide d'un récipient Expired - Lifetime EP0460271B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE59010093T DE59010093D1 (de) 1990-06-08 1990-06-08 Verfahren und Vorrichtung zum Absaugen von Flüssigkeit aus einem Behälter
EP19900110870 EP0460271B1 (fr) 1990-06-08 1990-06-08 Procédé et dispositif pour pomper du liquide d'un récipient

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19900110870 EP0460271B1 (fr) 1990-06-08 1990-06-08 Procédé et dispositif pour pomper du liquide d'un récipient

Publications (2)

Publication Number Publication Date
EP0460271A1 true EP0460271A1 (fr) 1991-12-11
EP0460271B1 EP0460271B1 (fr) 1996-01-24

Family

ID=8204072

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900110870 Expired - Lifetime EP0460271B1 (fr) 1990-06-08 1990-06-08 Procédé et dispositif pour pomper du liquide d'un récipient

Country Status (2)

Country Link
EP (1) EP0460271B1 (fr)
DE (1) DE59010093D1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR788299A (fr) * 1934-04-04 1935-10-07 Salvage Process Corp Perfectionnements aux procédés et aux appareils pour retirer, par succion, des liquides visqueux des réservoirs, des soutes de navires, etc.
GB2131098A (en) * 1982-12-02 1984-06-13 Alh Syst Ltd Pit latrine emptier
GB2198484A (en) * 1986-11-13 1988-06-15 Univ Queensland Syphons and liquid metering devices

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR788299A (fr) * 1934-04-04 1935-10-07 Salvage Process Corp Perfectionnements aux procédés et aux appareils pour retirer, par succion, des liquides visqueux des réservoirs, des soutes de navires, etc.
GB2131098A (en) * 1982-12-02 1984-06-13 Alh Syst Ltd Pit latrine emptier
GB2198484A (en) * 1986-11-13 1988-06-15 Univ Queensland Syphons and liquid metering devices

Also Published As

Publication number Publication date
DE59010093D1 (de) 1996-03-07
EP0460271B1 (fr) 1996-01-24

Similar Documents

Publication Publication Date Title
DE2932585A1 (de) Abwasser-kanalisationssystem
EP0559670A1 (fr) Insert pour un puits.
DE1611069B2 (de) Selbsttätiges Rückstrom-Reinigungssystem für Flüssigkeitsfilteranlagen
DE102009035345A1 (de) Tiefentnahmegerät für Flüssigkeitsproben
DE4311470C2 (de) Be- und Entlüftungseinrichtung eines Fahrzeug-Kraftstofftanks
EP0570739B1 (fr) Système de drainage
EP0460271B1 (fr) Procédé et dispositif pour pomper du liquide d'un récipient
DE102012104278B3 (de) Wärmerückgewinnungsvorrichtung sowie deren Verwendung
EP3020878B1 (fr) Prise d'eau et tuyau de contrôle
EP1651821A1 (fr) Urinoir
EP3657020B1 (fr) Dispositif d'évacuation pour une conduite d'aspiration
DE102006010569A1 (de) Unterdruckabwassereinrichtung
DE4315502C2 (de) Abscheideanlage
DE3525729C2 (fr)
DE102010005778A1 (de) Vorrichtung zum selbsttätigen Verschließen eines Zulaufes eines Behälters zur Aufnahme einer Flüssigkeit und Abscheidevorrichtung
EP3208394B1 (fr) Siphon de déversement et procédé de manipulation d'un tel siphon de déversement
DE29507730U1 (de) Infusionsgerät
DE735181C (de) Regner mit selbsttaetiger, absatzweiser Wasserabgabe
EP1117935B1 (fr) Carter de pompe aseptique a drainage commutable
DE19503680C2 (de) Flüssigkeitsheber
DE8717347U1 (de) Entgasungsvorrichtung für Flüssigkeiten
DE19938590C1 (de) Anordnung zur Zuführung eines unter Atmosphärendruck stehenden Belüftungsgases an eine Steuereinrichtung
DE202008011256U1 (de) Systemtrenner I
DE19856660A1 (de) Überlaufschutz für Regentonnen
DE102013009795A1 (de) Vorrichtung zum Befüllen von Gießkannen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19901215

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

RBV Designated contracting states (corrected)

Designated state(s): CH DE ES FR GB IT LI NL

17Q First examination report despatched

Effective date: 19930630

18D Application deemed to be withdrawn

Effective date: 19941105

18RA Request filed for re-establishment of rights before grant

Effective date: 19950614

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

D18D Application deemed to be withdrawn (deleted)
AK Designated contracting states

Kind code of ref document: B1

Designated state(s): CH DE ES FR GB IT LI NL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19960124

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19960124

Ref country code: ES

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19960124

Ref country code: GB

Effective date: 19960124

Ref country code: FR

Effective date: 19960124

REF Corresponds to:

Ref document number: 59010093

Country of ref document: DE

Date of ref document: 19960307

EN Fr: translation not filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19960630

Ref country code: CH

Effective date: 19960630

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
GBV Gb: ep patent (uk) treated as always having been void in accordance with gb section 77(7)/1977 [no translation filed]

Effective date: 19960124

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20010621

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030101