EP1022399A1 - Entleerungsvorrichtung für Unterdruckabwasseranlage - Google Patents

Entleerungsvorrichtung für Unterdruckabwasseranlage Download PDF

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Publication number
EP1022399A1
EP1022399A1 EP00300093A EP00300093A EP1022399A1 EP 1022399 A1 EP1022399 A1 EP 1022399A1 EP 00300093 A EP00300093 A EP 00300093A EP 00300093 A EP00300093 A EP 00300093A EP 1022399 A1 EP1022399 A1 EP 1022399A1
Authority
EP
European Patent Office
Prior art keywords
discharge conduit
conduit
valve
discharge
vacuum
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Withdrawn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
EP00300093A
Other languages
English (en)
French (fr)
Inventor
Henry Olin
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.)
Evac Oy
Original Assignee
Evac International Oy
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 Evac International Oy filed Critical Evac International Oy
Publication of EP1022399A1 publication Critical patent/EP1022399A1/de
Withdrawn legal-status Critical Current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
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C1/00—Chairs adapted for special purposes
    • A47C1/04—Hairdressers' or similar chairs, e.g. beauty salon chairs
    • A47C1/06—Hairdressers' or similar chairs, e.g. beauty salon chairs adjustable
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/36—Support for the head or the back
    • A47C7/40—Support for the head or the back for the back
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/62—Accessories for chairs

Definitions

  • This invention relates to a vacuum sewer system according to the preamble of claim 1.
  • a substantial problem with vacuum sewer systems is the conveyance in the sewer of sewage from a point where it is under partial vacuum to a point at atmospheric pressure. This problem has been previously solved in several ways, of which some allow continuous transport of sewage in a vacuum sewer from a space under partial vacuum and others allow only intermittent transport.
  • GB-A-2,012,334 discloses a solution which allows continuous transport of sewage. At the end of the vacuum sewer there is a liquid column the height of which corresponds to the partial vacuum in the vacuum sewer. Sewage may continuously flow through this liquid column from the vacuum sewer to a space under atmospheric pressure.
  • a disadvantage, however, of this known system is that when the partial vacuum is about half of the atmospheric pressure, a liquid column with a height of about five meters is required which clearly limits the application of the solution.
  • An object of the invention is to improve the emptying of a vacuum sewer system and especially the emptying of such a system based on passing sewage through a liquid column.
  • the invention is based on balancing the partial vacuum of the liquid column by an inertia force achieved by centrifugal force and not by gravitational force as in the known device.
  • the centrifugal inertia force is achieved by rapidly rotating a discharge conduit connected to the end of the vacuum sewer system.
  • the discharge conduit is suitably so configured that its inlet end is at the rotational axis of the same and its outlet end at a considerable radial distance from the rotational axis.
  • the outlet end of the conduit is conveniently provided with a valve means, which opens when the inertia force of the liquid in the conduit due to the rotational movement is higher than the counter force of the partial vacuum acting on the conduit. This provides for emptying the vacuum sewer at any chosen time in a manner that does not in any way disturb the functioning of the vacuum sewer in the vacuum sewer system.
  • the discharge conduit of the system according to the invention is preferably, in relation to the rotational speed given to it by a drive means, dimensioned so that the inertia force of the rotational movement at the outlet end of the conduit is about 20 to 100 times greater than the inertia force caused by local gravitation. In this way a device with a good operational reliability is achieved.
  • the outlet end of the discharge conduit is advantageously at a distance of from 15 to 55 cm, preferably from 20 to 40 cm, from the rotational axis of the conduit.
  • Such dimensioning allows the construction of a sufficiently small system, in which, however, the rotational speed of the conduit is reasonable, in the region of 500 r/min.
  • the power source for the drive means of the discharge conduit is preferably an electric motor, the power of which is of a magnitude of 1 kW and the nominal rotational speed, when coupled to a network of 50 Hz, of which is 1500 or 3000 r/min.
  • a motor gives with a rather simple power transmission, e.g. a V-belt drive, a suitable rotational speed for the discharge conduit.
  • the vacuum pump of the system may receive its drive power from the same motor as the discharge conduit.
  • the system can be designed so that both the vacuum pump and the discharge conduit are always used at the same time. If, however, it is desirable to avoid the discharge conduit from rotating unnecessarily, a disconnectable switch may be installed in the drive means of the discharge conduit for controlling the rotation.
  • the function of the discharge conduit may also be controlled, e.g. by means of a sensing device, which prevents the rotation of the conduit and/or effects the closing of the valve means of the conduit when the amount of liquid in the conduit is below a certain limit value. Substantially the same effect is achieved if the valve means of the discharge conduit is a non-return valve and there is a spring bias effective in the closing direction of the valve, or alternatively, if the valve means of the discharge conduit is a closure valve and there are means for controlling its opening and closing movements according to the inertia force and the amount of the liquid in the conduit.
  • At least the end part of the discharge conduit is "pipelike" or tubular and corresponds to the dimensioning of the vacuum sewer, i.e. has a diameter of from 45 to 60 mm, preferably from 50 to 55 mm. In this way a sufficiently large liquid volume is easily collected in the conduit for ensuring the function.
  • the discharge conduit may be balanced with a counter-weight or may be designed as a double- or multi-branched conduit so that the centre point of its rotating mass is on the rotational axis or in the immediate vicinity of it.
  • the discharge conduit of a vacuum sewer system functions very rapidly. Therefore it is advantageous to limit the rotation of the discharge conduit to very short periods, the length of which are preferably at the most only a few seconds, which usually is sufficient for achieving a desired discharge operation.
  • the function of the limiting means may be based on measuring time or distance. In certain embodiments it may be conceived that the rotational movement does not even comprise a full turn, whereby the rotational movement also may be a back and forth, rapidly occurring swinging motion.
  • reference numeral 1 designates a number (three as shown) of vacuum water closets and reference numeral 2 designates a sewer pipe connected to each of the water closets 1 and which extends to, so that its end portion opens into, a relatively small intermediate container 3. Sewage transport from each of the closets 1 is controlled by a respective, normally closed sewer valve 4. Each sewer valve 4 may be opened if a sufficiently strong partial vacuum, necessary for effectively transporting sewage, prevails in the sewer pipe 2. The partial vacuum is generated by a vacuum pump 5 driven by an electrical motor 6.
  • a rotatable discharge conduit 8 in the form of a pipe is rotatable about an axis 7 and extends from the bottom part of the intermediate container 3.
  • the conduit 8 receives its drive power through a belt gear 9 from a motor 6.
  • a valve means 10 is arranged at an offset end of the conduit and typically comprises a stiff or spring biased non-return valve or a remote-controlled closure valve.
  • the conduit 8 rotates in a container 11 having a bottom pipe 12.
  • the sewage coming from the vacuum sewer system passes through the conduit 8, into the container 11 from where it is led by the pipe 12 to a desired location, e.g. a municipal sewer, a waste water purification plant or a collecting container 13.
  • the device shown in the drawing operates as follows.
  • the vacuum pump 5 continuously maintains a partial vacuum, within a range of an allowable upper and lover level, of about a half atmosphere in the sewer pipe 2 and in the intermediate container 3.
  • a water closet 1 is emptied by opening the sewer valve 4, causing the atmospheric pressure to push the sewage in the water closet 1 into the sewer pipe 2 and through the pipe 2 into the intermediate container 3.
  • the sewage from the container 3 flows to the discharge conduit 8. It is subject to the same partial vacuum as exists in the intermediate container 3 and forms a liquid column.
  • a centrifugal force is generated which pushes the sewage in the conduit 8 to the end portion of the latter with a force that exceeds a counter force provided by the partial vacuum.
  • part of the sewage leaves the conduit 8 through the valve means 10.
  • the rotation of the conduit 8 may be stopped.
  • a certain amount of liquid has to be maintained in the conduit 8 so that the liquid closes the connection to the atmosphere at the end part of the conduit. Otherwise air may flow through the conduit 8 to a space under partial vacuum. Sewage that has ended up in the container 11 through the conduit 8 flows through the bottom pipe 12 into the container 13.
  • the discharge conduit may be branched, for example it may comprise a double-branched pipe 8, 8a. By employing a second branch 8a, shown by broken lines, the centre of gravity of the rotating mass moves as close as possible to the axis 7.
  • the power transmission of the discharge conduit may have a remote-controlled disconnectable switch means 14.
  • the rotation of the discharge conduit and/or the operation of the valve means 10 may also be automatically controlled, e.g. by a surface level sensing means 15 in the conduit 8 or the collecting container 3.
  • Such surface level sensing means may include a control centre 16 which, on receiving, for example, a control signal from the sensing means 15 or other control command, starts the pump 5 and/or switches the switch means 14.
  • a pressure gauge 17 is also coupled to the control centre 16 to ensure that the vacuum sewer always has a sufficiently strong partial vacuum. If the valve means 10 is a controlled non-return valve, its control device is activated by a signal given by the control centre.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • General 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)
  • Sanitary Device For Flush Toilet (AREA)
EP00300093A 1999-01-20 2000-01-07 Entleerungsvorrichtung für Unterdruckabwasseranlage Withdrawn EP1022399A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI990111 1999-01-20
FI990111A FI105223B (fi) 1999-01-20 1999-01-20 Alipaineviemärijärjestelmän tyhjennyslaite

Publications (1)

Publication Number Publication Date
EP1022399A1 true EP1022399A1 (de) 2000-07-26

Family

ID=8553440

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00300093A Withdrawn EP1022399A1 (de) 1999-01-20 2000-01-07 Entleerungsvorrichtung für Unterdruckabwasseranlage

Country Status (5)

Country Link
EP (1) EP1022399A1 (de)
JP (1) JP2000213055A (de)
KR (1) KR20000076479A (de)
CN (1) CN1261120A (de)
FI (1) FI105223B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002059432A1 (de) 2001-01-26 2002-08-01 Geberit Technik Ag Toilettenanlage mit einer toilettenschüssel

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100370083C (zh) * 2005-08-04 2008-02-20 曹保琪 一种真空厕所系统
FI118231B (fi) * 2006-01-30 2007-08-31 Evac Int Oy Alipaineviemärijärjestelmä
JP4949731B2 (ja) * 2006-04-28 2012-06-13 株式会社テシカ 車両用汚水処理装置
CN101962970B (zh) * 2010-10-09 2012-05-23 清华大学 真空排水系统集水界面单元装置
WO2013025888A1 (en) 2011-08-16 2013-02-21 Flow Control Llc. Toilet with ball valve mechanism and secondary aerobic chamber
KR101464481B1 (ko) * 2013-10-22 2014-11-27 주식회사 호두 진공변기시스템의 자동배출장치
JP6214391B2 (ja) * 2013-12-26 2017-10-18 アロン化成株式会社 負圧吸引式トイレ

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2012334A (en) 1977-12-14 1979-07-25 Electrolux Ab Method and apparatus for conveying waste water by means of a vacuum
WO1997017502A1 (en) * 1995-11-07 1997-05-15 Fiberite, Inc. Waste tank for vacuum sewage system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2012334A (en) 1977-12-14 1979-07-25 Electrolux Ab Method and apparatus for conveying waste water by means of a vacuum
WO1997017502A1 (en) * 1995-11-07 1997-05-15 Fiberite, Inc. Waste tank for vacuum sewage system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002059432A1 (de) 2001-01-26 2002-08-01 Geberit Technik Ag Toilettenanlage mit einer toilettenschüssel
US6910231B2 (en) 2001-01-26 2005-06-28 Geberit Technik Ag Toilet system with a toilet pan

Also Published As

Publication number Publication date
CN1261120A (zh) 2000-07-26
KR20000076479A (ko) 2000-12-26
JP2000213055A (ja) 2000-08-02
FI990111A0 (fi) 1999-01-20
FI105223B (fi) 2000-06-30

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