EP0287350A2 - Système sous vide pour recueillir des eaux usées - Google Patents

Système sous vide pour recueillir des eaux usées Download PDF

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Publication number
EP0287350A2
EP0287350A2 EP88303325A EP88303325A EP0287350A2 EP 0287350 A2 EP0287350 A2 EP 0287350A2 EP 88303325 A EP88303325 A EP 88303325A EP 88303325 A EP88303325 A EP 88303325A EP 0287350 A2 EP0287350 A2 EP 0287350A2
Authority
EP
European Patent Office
Prior art keywords
vacuum
chamber
tank
pump
pipe
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
EP88303325A
Other languages
German (de)
English (en)
Other versions
EP0287350A3 (en
EP0287350B1 (fr
Inventor
Olav Hofseth
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.)
JETS SYSTEMER AS
Original Assignee
JETS SYSTEMER AS
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 JETS SYSTEMER AS filed Critical JETS SYSTEMER AS
Publication of EP0287350A2 publication Critical patent/EP0287350A2/fr
Publication of EP0287350A3 publication Critical patent/EP0287350A3/en
Application granted granted Critical
Publication of EP0287350B1 publication Critical patent/EP0287350B1/fr
Expired legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
    • E03F1/006—Pneumatic sewage disposal systems; accessories specially adapted therefore

Definitions

  • the present invention relates to collecting arrangement for vacuum sewage collecting systems and comprises a vacuum tank which through a supply pipe is connected to toilets, drainage tanks for urinals, greywater tanks etc., and a vacuum pump which through a suction pipe provides the necessary vacuum in the vacuum tank.
  • Vacuum sewage colleting systems for toilets have already been known for several decades. Such systems were primarily developed for use onboard airplanes and railway trains. Espesially with regard to the airplanes, it was necessary to reduce the amount of water being carried with the planes to reduce the total weight.
  • an important advantage with the vacuum drainage systems for toilets is that the amount of water being used for each flushing operation is very small. While the conventional toilets use 8 - 10 litres of water for each flushing opera­tion, the vacuum toilets needs less than 1,5 liter.
  • vacuum sewage collecting systems As the vacuum drain pipes and vacuum sewage collecting tanks also may be mounted in an up-stream arrangement.
  • the mounting arrangement for vacuum sewage collecting systems there­fore are more flexible. -
  • the possibility of leakage from a vacuum sewage collect­ing system is less than with conventional systems as the sewage is transported by means of air under vacuum.
  • vacuum sewage collecting systems are also encumbered with practical as well as operational problems.
  • the vacuum in the vacuum tank is provided by means of a vacuum pump, while the sewage in the vacuum tank is pumped out of the tank by means of a separate centrifugal pump.
  • the vacuum pump has to be stopped, resulting in operations stoppage (the toilets can not be used).
  • the users are using the toilets for other purposes than what they were initially intended for, i.e. the users are throwing garbage in the form of plastics bags, bottle caps, hand towels, sanitary ware or the like into the toilets.
  • Such articles tend to pack the impeller of the centrifugal pump and prevent emptying of the vacuum tank, which again results in opera­tions stoppage and an increase in maintenance costs.
  • the vacuum sewage collecting system consists of a vacuum tank 1, which on one side is connected to a supply line 6 and on the other side is con­nected to a suction pipe 7 coupled to vacuum pumps 4.
  • the vacuum tank 1 is divided into two chambers by means of a "dividing plate" 10.
  • the dividing plate consists of a grating, a perforated plate or the like, and is partly conical with a partly bent pipe piece 16 which protrudes dowmwardly from the centre of the plate 10 and partly in to the lower, first 8 of the two chambers 8 and 9. Sewage in the form of water mixed with stools, urine, sanitary ware etc. flows into the first chamber 8 from toilets, urinals etc. (not shown) through the supply pipe 6. Water, or more correctly, fluid components flowing into the first chamber 8 can freely flow into the upper, second chamber 9 through the grating 10.
  • the solid components arriving in the first chamber 8 are, however, ground by means of a macerator or grinder 3 which is provided in connection with the lower part of the chamber 8 and is pumped together with the liquid present to the second chamber 9 via a connecting pipe 11.
  • the macerator may be a combined grinder/pump device, or a separately driven grinder which is connected to a separately driven pump. Further, the macerator may be continiously or intermittently driven. The kind of operation to be choosen in this connection depends upon the capasity of the macera­tor, the amount of material to be macerated and so on.
  • Sewage, air and ground, solid materials which is present in the second chamber 9, is pumped via the suction pipe 7 out of the chamber by means of a vacuum pump in the form of a screw pump 4.
  • the sewage and the solid particles are further transported through the drain pipe 13 to a not shown storage tank, purifying plant or the like, while the air is ventilated through an air escape pipe 16.
  • the vacuum collecting unit is provided with two separately driven screw pumps 4, which by means of pipes 14, 15 and two-way valves 5, can be driven separately, or be coupled in parallel and driven simultaneously. This is done for safety reasons to avoid operational stoppage, and to maintain a reserve capasity for the unit.
  • the vacuum in the vacuum tank 1, is maintained on an adequate level, i.e. 30 - 40 %, by means of the screw pumps 4 which is started and stopped by means of an operating unit, not shown.
  • the pump operation unit may be in the form of a vacuum sensor (pressure switch) disposed in the tank 1 and which is coupled to a starter relay for the pumps.
  • supply pipes 12 are coupled to the suction inlet of the pumps to supply feed water to these.
  • the feed water is supplied via the pipes 12 from a feed water tank 2 which is disposed on the drain pipes 13.
  • the feed water is sewage from the pumps 4. It is, however, also possible to use waste water or fresh water instead of sewage.
  • Fig. 2 reveals an other vacuum tank 1 according to the invention. Also in this example the vacuum tank is divided into two chambers 8, 9.
  • the dividing plate consists, however, of a plate 17 which is provided with an upwardly protruding pipe 18.
  • the pipe 18 reaches some distance up into the upper chamber 9, and connects this chamber with the lower chamber 8. Air entering the lower chamber 8 will flow through the pipe 18 and into the upper chamber 9, while the sewage together with solid particles entering the lower chamber 9 will be macerated by the macerator and thereafter transported to the upper chamber 9 via the connecting pipe 19.
  • the macerator is started by a signal from a level switch 20 which is disposed in the lower chamber 8 and is stopped by means of a timing relay.
  • the object of the pipe 18 is, as indicated above, primarily to let the air flow freely into the upper chamber 9 to obtain equal pressure in the two chambers 8, 9. However, the pipe 18 will also serve as a return pipe if the sewage in the upper chamber reaches the level where the pipe 18 ends.
  • the advantage with the vacuum tank shown in Fig. 2 is that the macerator will be in operation only when necessary, i.e. when the sewage reaches above the level where the level switch 20 is activated. In the example shown in Fig. 1, the macerator has to be in operation longer periods of time to be sure that all of the solid components in the chamber is macerated.
  • the supply lines 6 and the macerator 3 is coupled to the lower chamber 8, whilst suction pipe 7 is coupled to the upper chamber 9. It is, however, within the frame of the invention possible to arrange these coup­lings opposite, i.e. by coupling the supply line 6 and the macerator 3 to the upper chamber 9 and by coupling the suction pipe 7 to the lower chamber 8. In such instance it is natural to use a macerator 3 in the form of a grinder without a pump and arrange this in close connection to the dividing plate 10, 17 so that the solid particles being present in the chamber 9, and which are ground by grinder, falls freely into the lower chamber 8.
  • a vertical dividing wall or plate thereby having two side by side disposed chambers, instead of a horisontal dividing plate 10, 17 as shown in Fig. 1 and 2.

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)
  • Sewage (AREA)
  • Cleaning In General (AREA)
  • Sink And Installation For Waste Water (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Cyclones (AREA)
EP19880303325 1987-04-13 1988-04-13 Système sous vide pour recueillir des eaux usées Expired EP0287350B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NO871539 1987-04-13
NO871539A NO165502C (no) 1987-04-13 1987-04-13 Oppsamlingsanordning for vakuumavloepssystem.

Publications (3)

Publication Number Publication Date
EP0287350A2 true EP0287350A2 (fr) 1988-10-19
EP0287350A3 EP0287350A3 (en) 1989-01-18
EP0287350B1 EP0287350B1 (fr) 1991-08-21

Family

ID=19889857

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880303325 Expired EP0287350B1 (fr) 1987-04-13 1988-04-13 Système sous vide pour recueillir des eaux usées

Country Status (5)

Country Link
EP (1) EP0287350B1 (fr)
DE (1) DE3864300D1 (fr)
ES (1) ES2026253T3 (fr)
FI (1) FI87823C (fr)
NO (1) NO165502C (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990010123A1 (fr) * 1989-03-03 1990-09-07 Olav Hofseth Systeme de drainage sous vide
US7029231B2 (en) * 2001-05-29 2006-04-18 Jets As Liquid seal pump of the helical screw type
US8381324B2 (en) 2006-12-21 2013-02-26 Evac International Oy Vacuum sewage system
US10030654B2 (en) 2013-05-16 2018-07-24 Jets As Liquid ring screw pump functional design
WO2018174719A1 (fr) 2017-03-23 2018-09-27 Jets As Agencement pour l'accumulation et l'évacuation d'eau de dégivrage et de condensation provenant d'unités de réfrigération et de refroidissement
CN109794195A (zh) * 2019-03-21 2019-05-24 中国铁路设计集团有限公司 一种防堵型真空罐装置
WO2022261688A1 (fr) * 2021-06-14 2022-12-22 Eoos Next Gmbh Toilette à vide et réservoir à vide destiné à une toilette à vide

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011000732B3 (de) * 2011-02-15 2012-08-09 Roediger Vacuum Gmbh Drehkolbenpumpe

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2050775A5 (fr) * 1969-06-24 1971-04-02 Baudot Hardoll
FR2366186A1 (fr) * 1976-10-04 1978-04-28 Seureca Installation pour collecter et evacuer un melange d'eau et de dechets
GB2017188A (en) * 1978-03-20 1979-10-03 Burton Mech Contractors Vacuum sewage system
DE3042619A1 (de) * 1980-11-12 1982-05-19 Woma-Apparatebau Wolfgang Maasberg & Co Gmbh, 4100 Duisburg Vorrichtung zum kanal- und grubenreinigung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2050775A5 (fr) * 1969-06-24 1971-04-02 Baudot Hardoll
FR2366186A1 (fr) * 1976-10-04 1978-04-28 Seureca Installation pour collecter et evacuer un melange d'eau et de dechets
GB2017188A (en) * 1978-03-20 1979-10-03 Burton Mech Contractors Vacuum sewage system
DE3042619A1 (de) * 1980-11-12 1982-05-19 Woma-Apparatebau Wolfgang Maasberg & Co Gmbh, 4100 Duisburg Vorrichtung zum kanal- und grubenreinigung

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990010123A1 (fr) * 1989-03-03 1990-09-07 Olav Hofseth Systeme de drainage sous vide
US5344085A (en) * 1989-03-03 1994-09-06 Olav Hofseth Vacuum drainage system
US7029231B2 (en) * 2001-05-29 2006-04-18 Jets As Liquid seal pump of the helical screw type
US8381324B2 (en) 2006-12-21 2013-02-26 Evac International Oy Vacuum sewage system
US10030654B2 (en) 2013-05-16 2018-07-24 Jets As Liquid ring screw pump functional design
DE202014011520U1 (de) 2013-05-16 2021-12-21 Jets As Funktionelles Design einer Flüssigkeitsringschraubenpumpe
WO2018174719A1 (fr) 2017-03-23 2018-09-27 Jets As Agencement pour l'accumulation et l'évacuation d'eau de dégivrage et de condensation provenant d'unités de réfrigération et de refroidissement
DE202018006087U1 (de) 2017-03-23 2019-03-06 Jets As Anordnung für die Sammlung und Entleerung von Enteisungs- und Kondensationswasser aus Kälte- und Kühlaggregaten
US11333423B2 (en) 2017-03-23 2022-05-17 Jets As Arrangement for accumulation and evacuation of defrosting and condensation water from refrigeration and cooling units
CN109794195A (zh) * 2019-03-21 2019-05-24 中国铁路设计集团有限公司 一种防堵型真空罐装置
WO2022261688A1 (fr) * 2021-06-14 2022-12-22 Eoos Next Gmbh Toilette à vide et réservoir à vide destiné à une toilette à vide

Also Published As

Publication number Publication date
ES2026253T3 (es) 1992-04-16
NO165502C (no) 1991-02-20
NO871539L (no) 1988-10-14
NO871539D0 (no) 1987-04-13
EP0287350A3 (en) 1989-01-18
NO165502B (no) 1990-11-12
DE3864300D1 (de) 1991-09-26
FI881705A0 (fi) 1988-04-13
EP0287350B1 (fr) 1991-08-21
FI87823B (fi) 1992-11-13
FI87823C (fi) 1993-02-25
FI881705A (fi) 1988-10-14

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