EP0584031A2 - Système de toilette à vide pour installations mobiles et constructions civiles - Google Patents

Système de toilette à vide pour installations mobiles et constructions civiles Download PDF

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Publication number
EP0584031A2
EP0584031A2 EP93500071A EP93500071A EP0584031A2 EP 0584031 A2 EP0584031 A2 EP 0584031A2 EP 93500071 A EP93500071 A EP 93500071A EP 93500071 A EP93500071 A EP 93500071A EP 0584031 A2 EP0584031 A2 EP 0584031A2
Authority
EP
European Patent Office
Prior art keywords
conduit
valve
storage tank
rotating element
joints
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
EP93500071A
Other languages
German (de)
English (en)
Other versions
EP0584031B1 (fr
EP0584031A3 (fr
Inventor
Vicente Polo Sanchez
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.)
Tecnicas Modulares E Industriales Sa Temoinsa
Original Assignee
Tecnicas Modulares E Industriales Sa Temoinsa
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 Tecnicas Modulares E Industriales Sa Temoinsa filed Critical Tecnicas Modulares E Industriales Sa Temoinsa
Publication of EP0584031A2 publication Critical patent/EP0584031A2/fr
Publication of EP0584031A3 publication Critical patent/EP0584031A3/fr
Application granted granted Critical
Publication of EP0584031B1 publication Critical patent/EP0584031B1/fr
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
    • E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
    • E03F1/006—Pneumatic sewage disposal systems; accessories specially adapted therefore
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
    • E03D5/00—Special constructions of flushing devices, e.g. closed flushing system

Definitions

  • the present invention relates to a vacuum toilet system for moving installations and civil constructions which can be used, for example, in railways, and is of the type which comprise toilet bowls, a waste water storage tank, a valve connecting each bowl with this storage tank and a device controlling the operation of the system.
  • the waste water storage tank is kept at a pressure which is lower than atmospheric pressure in order to induce the passage of water from the bowl to the storage tank when the connecting valve is opened.
  • EP-A-277 786 describes a vacuum toilet system particularly for aeroplanes which comprises toilet bowls, a waste water storage tank, a valve which connects each bowl to said storage tank, an air extraction conduit with means of causing a negative pressure in the storage tank and control means for the operation of the assembly. This and other known systems have a number of drawbacks.
  • Another limitation of the known systems is due to the lack of protection of the storage tank pressure reducing means which can suffer from damage caused by solid bodies in suspension in the waste water.
  • the known systems do not allow the low pressure in the waste water storage tank to be maintained between two actuation cycles of the storage tank pressure reducing means.
  • the present invention has been developed with the aim of overcoming the aforementioned limitations. It consists of a vacuum toilet system of the type already described in which the valve comprises a valve housing with a through conduit, a rotating element to open and close the passage of fluid through the valve, and actuating means for rotating said rotating element, and is characterised in that said valve housing comprises a cylindrical cavity and inlet and outlet conduits which are transverse thereto, and said rotating element consists of a cylinder which is housed in said cavity and is provided with a transverse through conduit, which, when the valve is in the open position, connects the inlet and outlet conduits of the valve housing, the ends of the transverse conduit being adapted so that the rotating element completes the closing of the inlet conduit and of the outlet conduit of the valve housing non-simultaneously.
  • At least part of the border of the ends of the transverse conduit of the rotating element is provided with a cutting edge
  • a metal sleeve is inserted into the cylindrical cavity of the valve housing and is provided with orifices which correspond to the inlet and outlet conduits, at least part of the border of said orifices being provided with a cutting edge such that together with the cutting edge of the border of the ends of the conduit of the rotating element a scissor effect is produced.
  • the toilet system is provided with watertightness means which consist of floating watertight joints provided in suitable housings between the adjacent surfaces of each pair of elements that undergo relative movement, said floating joints being forced against said surfaces by means of a pneumatic system when the moving elements are at rest.
  • watertightness means consist of floating watertight joints provided in suitable housings between the adjacent surfaces of each pair of elements that undergo relative movement, said floating joints being forced against said surfaces by means of a pneumatic system when the moving elements are at rest.
  • This watertightness system provides a reliable and long-lasting seal, since it allows greater pressure to be exerted on the joints when the moving elements are at rest, thereby ensuring good watertightness, and lower pressure when said elements are moving, avoiding premature wear of the joints.
  • floating watertight joints are provided within annular recesses formed in each base of the cylindrical cavity of the valve housing, said recesses and joints being shaped so that they define between them annular channels which lead to a controlled compressed air source in order to press the joints against the respective bases of the rotating element.
  • O-rings are interposed between the watertight joints and the walls of their recesses in order to ensure that the waste waters and the air of the pneumatic system are kept separated at all times.
  • the system further comprises a non-return device to maintain the vacuum in the waste water storage tank, said non-return device being arranged in the conduit for extracting air from the storage tank.
  • This device may be a diaphragm valve which actuates against air-passage orifices and allows the partial vacuum created in the storage tank to be maintained for the required amount of time.
  • the system is further provided with a mechanical filter arranged in the air extraction conduit at the outlet of the waste water storage tank.
  • each toilet bowl comprises a plurality of water sprinklers for cleaning.
  • the system which forms the object of the present invention is provided with means of operational control comprising independent alarms for each bowl, general alarms for the common parts of the system and an alarm in case of a break in the control circuit, and further comprising switches to independently activate each operational phase of the system.
  • FIG. 1 is a schematic representation of a vacuum toilet system assembly which is composed of one or more toilet bowls 1 and a waste water storage tank 2, connected by means of an evacuation conduit 3 in which a valve 4 is provided for opening and closing said conduit.
  • the system also comprises an ejector device 5 to create a partial vacuum in the storage tank 2 and in the evacuation conduit 3 through the air extraction conduit 6; an odour filter 7 is placed in the conduit 6.
  • Another element of the system is the water pump 8 for cleaning the bowls 1 of residues.
  • the pump sucks from a storage tank (not shown) through a manually operated shutoff cock 8a.
  • the pump feeds a plurality of sprinklers 19 which are provided on the walls of the bowl 1.
  • the waste water storage tank 2 comprises an outlet 9 for emptying the tank, heating resistances 10 to prevent the water from freezing and a level detector 11.
  • control panel 12 actuated or activated from a control panel 12 either directly or by means of pneumatic electrovalves 13, 14, 15 fed by a compressed air source (not shown) through pressure regulators 16.
  • the control panel 12 receives signals from a manual switch 17 which activates the operational cycle, from an indicator 18 of the water level in the bowl 1 and from the level detector 11 of the storage tank 2.
  • FIG. 1 Figure 2 and figure 3 show the valve 4 in detail.
  • valve housing 21 which comprises a cylindrical cavity 22 and an inlet conduit 23 and an outlet conduit 24 oriented transversally to said cavity, and a rotating cylinder 25 housed within said cavity and provided with a transverse through conduit 26.
  • this conduit 26 connects the inlet conduit 23 and outlet conduit 24 together, thus connecting the bowl 1 and the waste water storage tank 2.
  • the cylinder 25 is rotationally driven by the motor 20, controlled from the control panel 12.
  • a metal sleeve 27 is provided within the cavity 22 of the valve housing 21, which may be of a plastic material, and has orifices which correspond to the inlet conduit 23 and the outlet conduit 24.
  • the edges of the conduit 26 are machined in such a way that when the cylinder 25 is rotated so as to close the valve, the inlet conduit 23 and the outlet conduit 24 do not close simultaneously but rather one after the other.
  • both the edges of the conduit 26 across the cylinder as well as the edges of the orifices of the sleeve 27 are machined so as to have cutting edges 25c and 27c which together produce a scissor effect at the moment of closure.
  • the system of the invention is provided with means to ensure optimum watertightness between the elements which undergo relative movement.
  • An example of these watertightness means is shown in figure 3 and in more detail in figure 4, which represent one embodiment of said watertightness means applied between the valve housing 21 and the rotating cylinder 25.
  • each base of the cylindrical cavity 22 of the valve housing 21 is formed a circular groove 28 in which a watertight joint 29 fits with a certain amount of clearance ("floating").
  • the watertight joint 29 may be of any suitable material, for example a synthetic material such as the one known commercially by the name TEFLON.
  • the groove 28 and the joint 29 are shaped in such a way that between them they define an annular channel 30; this channel 30 is connected to air inlets 31 which are connected in turn to the compressed air source (not shown) through the line 33 of figure 1.
  • the electrovalve 14 allows the passage of compressed air along line 33 so that in the region 25a the joint 29 is pressed against the base of the cylinder 25, thereby ensuring perfect watertightness.
  • the electrovalve 14 closes off the supply of air to the channel 30 and the joint 29 is subjected only to a residual pressure, so that the frictional wear due to contact with the base of the cylinder at 25a is relatively small.
  • O-ring seals 34 are provided between the joint 29 and the walls of the groove 28.
  • the ejector 5, shown in figure 5, is known in the state of the art and is not represented in detail. Its operation is based on forcing air to pass (arrow A) through a nozzle and using the negative pressure created therein to extract air (arrow B) from the waste water storage tank 2 by the Venturi effect and thus creating a partial vacuum. The air supplied and the air extracted from the storage tank are expelled to the atmosphere (arrow C).
  • Figure 6 represents the non-return device 40 and filter device 43 assembly.
  • the non-return device 40 is provided in the air extraction conduit 6.
  • This device can be a diaphragm valve, such as the one which is represented in figure 7, with a plurality of axial orifices 41 and a flexible diaphragm 42 which allows the passage of fluid through the orifices 41 in one direction only (arrow D).
  • the conduit 6 for extracting air from the storage tank 2 is also provided with a mechanical filter 43 to reduce the danger of damage to the ejector 5, the non-return device 40 and the odour filter 7 caused by solid bodies in suspension in the waste water.
  • This filter 43 comprises a sieve 44 and a vacuum indicator 45.
  • the system control means comprise a modular logic controller, with boards that can easily be replaced in the event of failure, and which can be used for a plurality of toilet bowls.
  • Said control means are provided with independent alarms for each bowl which indicate the unit and the point where a problem has occurred, general alarms for the common parts of the system, and a control system break alarm so that an alarm signal can be transmitted even in the case of failure of the control means.
  • the control panel 12 is provided with switches at the front of each board to independently activate each operational phase of the system, to activate only one phase, if necessary, for checking the system or in case of a failure, and a reset button to re-initialize the process as desired.
EP93500071A 1992-06-01 1993-05-26 Système de toilette à vide pour installations mobiles et constructions civiles Expired - Lifetime EP0584031B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES09201120A ES2072176B1 (es) 1992-06-01 1992-06-01 Sistema de evacuacion por vacio en instalaciones moviles y de obra civil.
ES9201120 1992-06-01

Publications (3)

Publication Number Publication Date
EP0584031A2 true EP0584031A2 (fr) 1994-02-23
EP0584031A3 EP0584031A3 (fr) 1994-10-19
EP0584031B1 EP0584031B1 (fr) 1997-10-15

Family

ID=8277173

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93500071A Expired - Lifetime EP0584031B1 (fr) 1992-06-01 1993-05-26 Système de toilette à vide pour installations mobiles et constructions civiles

Country Status (4)

Country Link
EP (1) EP0584031B1 (fr)
AT (1) ATE159310T1 (fr)
DE (1) DE69314575D1 (fr)
ES (1) ES2072176B1 (fr)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998056996A1 (fr) * 1997-06-12 1998-12-17 Tecnicas Modulares E Industriales, S.A. - Temoinsa Systeme d'evacuation sous vide pourvu d'un robinet d'arret, et procede pour assurer le fonctionnement d'un robinet d'arret dans un systeme d'evacuation sous vide
EP0887478A2 (fr) * 1997-06-23 1998-12-30 Electrolux Siegen GmbH Système de toilette à vide
US5909968A (en) * 1996-07-09 1999-06-08 Evac International Oy Vacuum toilet unit
WO2000007878A1 (fr) * 1998-07-31 2000-02-17 Aoa Apparatebau Gauting Gmbh Systeme de toilettes a depression pour vehicule
ES2366504A1 (es) * 2008-05-14 2011-10-21 Tecnicas Modulares E Industriales, S.A. Inodoro con sistema de evacuación por vacío.
EP2818380A1 (fr) * 2013-06-27 2014-12-31 Siemens Aktiengesellschaft Véhicule sur rails équipé de WC
WO2015106897A1 (fr) * 2014-01-14 2015-07-23 Siemens Aktiengesellschaft Véhicule, notamment véhicule ferroviaire, comportant un système de toilettes fonctionnant à l'air comprimé
EP3321439A1 (fr) 2016-11-15 2018-05-16 Alte Technologies S.L.U. Système de transfert de déchets pour toilettes d'un véhicule de transport public
CN114277902A (zh) * 2021-11-20 2022-04-05 中国计量大学 一种真空便器的无电纯机械控制逻辑执行器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE183743C (fr) *
FR1313755A (fr) * 1961-07-10 1963-01-04 Utilisation Ration Gaz Robinet à boisseau pour tous fluides combustibles
EP0277786A2 (fr) * 1987-02-02 1988-08-10 Metra Oy AB Système de toilette à vide
GB2243166A (en) * 1990-04-20 1991-10-23 Metra Oy Ab Vacuum toilet system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE183743C (fr) *
FR1313755A (fr) * 1961-07-10 1963-01-04 Utilisation Ration Gaz Robinet à boisseau pour tous fluides combustibles
EP0277786A2 (fr) * 1987-02-02 1988-08-10 Metra Oy AB Système de toilette à vide
GB2243166A (en) * 1990-04-20 1991-10-23 Metra Oy Ab Vacuum toilet system

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5909968A (en) * 1996-07-09 1999-06-08 Evac International Oy Vacuum toilet unit
WO1998056996A1 (fr) * 1997-06-12 1998-12-17 Tecnicas Modulares E Industriales, S.A. - Temoinsa Systeme d'evacuation sous vide pourvu d'un robinet d'arret, et procede pour assurer le fonctionnement d'un robinet d'arret dans un systeme d'evacuation sous vide
US6240575B1 (en) * 1997-06-12 2001-06-05 Tecnicas Modulares E Industriales S.A. Evacuation system provided with a shut-off valve, and process for maintaining in operating conditions a shut-off valve in a vaccum evacuation system
EP0887478A2 (fr) * 1997-06-23 1998-12-30 Electrolux Siegen GmbH Système de toilette à vide
EP0887478A3 (fr) * 1997-06-23 1999-10-20 Electrolux Siegen GmbH Système de toilette à vide
US6082979A (en) * 1997-06-23 2000-07-04 Sealand Technology, Inc. Air pump for vacuum toilet systems
WO2000007878A1 (fr) * 1998-07-31 2000-02-17 Aoa Apparatebau Gauting Gmbh Systeme de toilettes a depression pour vehicule
US6330725B1 (en) 1998-07-31 2001-12-18 Aoa Apparatebau Gauting Gmbh Vacuum toilet system for a vehicle
ES2366504A1 (es) * 2008-05-14 2011-10-21 Tecnicas Modulares E Industriales, S.A. Inodoro con sistema de evacuación por vacío.
EP2818380A1 (fr) * 2013-06-27 2014-12-31 Siemens Aktiengesellschaft Véhicule sur rails équipé de WC
WO2015106897A1 (fr) * 2014-01-14 2015-07-23 Siemens Aktiengesellschaft Véhicule, notamment véhicule ferroviaire, comportant un système de toilettes fonctionnant à l'air comprimé
US10086849B2 (en) 2014-01-14 2018-10-02 Siemens Aktiengesellschaft Vehicle, in particular rail vehicle, with a compressed air-operated toilet device
EP3321439A1 (fr) 2016-11-15 2018-05-16 Alte Technologies S.L.U. Système de transfert de déchets pour toilettes d'un véhicule de transport public
WO2018091507A1 (fr) 2016-11-15 2018-05-24 Alte Technologies S.L.U. Système de transfert de déchets pour toilettes d'un véhicule de transport public
DE202017006884U1 (de) 2016-11-15 2018-09-26 Alte Technologies S.L.U. Abwassertransportsystem für eine Toilette eines öffentlichen Verkehrsmittels
US10941556B2 (en) 2016-11-15 2021-03-09 Alte Technologies S.L.U. Waste transfer system for a toilet of a public transport vehicle
CN114277902A (zh) * 2021-11-20 2022-04-05 中国计量大学 一种真空便器的无电纯机械控制逻辑执行器
CN114277902B (zh) * 2021-11-20 2024-02-06 中国计量大学 一种真空便器的无电纯机械控制逻辑执行器

Also Published As

Publication number Publication date
DE69314575D1 (de) 1997-11-20
EP0584031B1 (fr) 1997-10-15
ES2072176A2 (es) 1995-07-01
ES2072176B1 (es) 1996-12-16
ATE159310T1 (de) 1997-11-15
ES2072176R (fr) 1996-06-01
EP0584031A3 (fr) 1994-10-19

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