EP3078783A1 - Système d'évacuation de déchets sous vide pour un module de toilettes dans un véhicule de transport public et un tel module comprenant ledit système d'évacuation - Google Patents

Système d'évacuation de déchets sous vide pour un module de toilettes dans un véhicule de transport public et un tel module comprenant ledit système d'évacuation Download PDF

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Publication number
EP3078783A1
EP3078783A1 EP15382173.1A EP15382173A EP3078783A1 EP 3078783 A1 EP3078783 A1 EP 3078783A1 EP 15382173 A EP15382173 A EP 15382173A EP 3078783 A1 EP3078783 A1 EP 3078783A1
Authority
EP
European Patent Office
Prior art keywords
valve
pinch tube
air
gas
evacuation system
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Withdrawn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
EP15382173.1A
Other languages
German (de)
English (en)
Inventor
Alfredo Malva Ramos
Domingo Cabeza Nieto
Lars Henrik Christensen
Dídac Puebla Ribas
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.)
ALTE TECHNOLOGIES SLU
Original Assignee
ALTE TECHNOLOGIES SLU
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 ALTE TECHNOLOGIES SLU filed Critical ALTE TECHNOLOGIES SLU
Priority to EP15382173.1A priority Critical patent/EP3078783A1/fr
Publication of EP3078783A1 publication Critical patent/EP3078783A1/fr
Withdrawn legal-status Critical Current

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    • 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 a vacuum waste evacuation system for a toilet module in a public transportation vehicle and to a toilet module in a public transportation vehicle, e.g. a rail vehicle, comprising said evacuation system
  • Some means of public transportation such as railways, include toilet modules or sanitary facilities comprising a toilet connected to a vacuum device designed to suction the waste deposited in the toilet to a wastewater tank, and a cut-off valve arranged between the toilet and the wastewater tank, which allows the passage of the waste towards said tank when a user actuates the vacuum device.
  • the cut-off valve of the vacuum evacuation systems is normally closed preventing the conduction of the toilet waste to the wastewater tank, so that the wastewater tank may maintain the vacuum level generated by an ejector. Furthermore, the cut-off valve only changes its status, from normally closed to open, when a processing and control unit detects that a user has actuated a waste discharge button of the toilet. Said unit gives the opening signal to the cut-off valve during a configurable time, generally from 0.6 to 1 second, with said cut-off valve returning to its resting state (normally closed) until the discharge button of the toilet is again pressed by the next user.
  • This type of cut-off valves basically comprise a main body which includes an inlet and an outlet for the passage of the waste from the toilet and a ball valve or knife gate valve, which is housed inside the main body. Two seals housed each one on both sides of the valve aim to guarantee the air-tightness of the system.
  • the users of the toilets of public transportation vehicles deposit foreign bodies in the toilet such as syringes, sanitary towels, tampons, disposable razors, among others which may damage or even break said seals as they are pinched between the seals and body of the valve.
  • the main drawback of the existing vacuum evacuation systems lies in the fact that if the seals of the cut-off valve are damaged, these seals no longer guarantee the air-tightness of the system, which leads to problems of bad odours and a high maintenance cost of the toilet module.
  • the objective of the present invention is to resolve the mentioned drawbacks providing a vacuum waste evacuation system which resolves said drawbacks and which has the advantages described below.
  • the present invention provides a vacuum waste evacuation system for a toilet module in a public transportation vehicle, comprising a sanitary appliance connected to a wastewater tank, and means of depressing said tank for vacuum evacuating the waste when a user actuates a discharge button of the sanitary appliance, and is characterized in that it comprises a pinch tube valve or pinch valve to communicate the sanitary appliance with the wastewater tank, and a first control valve of said pinch tube valve which is configured to allow, in a first resting position, the inlet of air or gas to actuate the pinch tube to a normal closed position, and to allow, in a second active position, the outlet of the air or gas for returning the pinch tube to an open position when the user actuates the discharge button of the sanitary appliance.
  • the present invention provides a toilet module in a public transportation vehicle, e.g. a rail vehicle, comprising the vacuum evacuation system claimed.
  • the pinch tube valve comprises a main body associated to a pinch tube of elastomeric material which includes an inlet and an outlet for the passage of the waste from the sanitary appliance, two covers arranged at the inlet and the outlet of the main body which incorporate, each one, a support part for the ends of the pinch tube, the body of said valve including an inlet pipe associated to supply means of compressed air or gas to be able to displace the pinch tube until the closed position.
  • This preferred embodiment has the advantage that it uses the vacuum level generated by an ejector associated to the wastewater tank to guarantee the outlet of the air or gas and the complete return of the pinch tube to its open position, when it is necessary to evacuate the waste or wastewater. In this way, the system guarantees optimal operation of the pinch tube valve and the correct evacuation of the waste or foreign bodies.
  • the system comprises a processing and control unit configured to provide an activation signal to the first control valve in accordance with a waste discharge order signal issued by means of detection of a discharge order of the sanitary appliance, said same control valve being susceptible of returning to its resting position to allow the inlet of air or gas and close the pinch tube, when the discharge order signal stops.
  • the ends of the pinch tube are joined to support pieces 7a, 7b which are incorporated in covers 8a, 8b arranged at the inlet and outlet of the pinch tube valve 3. In this way, the ends of the pinch tube 5 act as seals of the pinch tube 5 valve 3.
  • the system 1 incorporates a second control valve 10 of the pinch tube valve 3 which is configured to prevent, in a resting position, the outlet of air or gas through the pipe 6 of the body 4 of the valve 3, and to allow, in an active position, the inlet of compressed air or gas through the same inlet pipe 6.
  • the system 1 incorporates a device 11 to regulate the supply pressure of compressed air or gas, as well as a valve 12 to give fast outlet to the air or gas which exits the pinch tube 5 valve 3.
  • the same system 1 incorporates a second device 13 to regulate the pressure of air or gas, and a filter 14 to purify the air or gas which enters the toilet module and the system 1.
  • the compressed air or gas comes from the supply network of compressed air or gas of the transportation vehicle.
  • the pinch tube 5 returns to its closed position in less than 1 second, when the evacuation cycle finalizes and the discharge order signal stops, which also entails the stoppage of the activation signal of the control valve 9, and the return of said valve 9 to its resting position to allow the inlet of compressed air and close the pinch tube 5 (see figure 2 ).
  • the second control valve 10 In the closed position of the pinch tube 5, the second control valve 10 is maintained in an active positioned configured to allow the air or gas inlet channel which maintains the pinch tube 5 closed.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Vehicle Waterproofing, Decoration, And Sanitation Devices (AREA)
  • Sanitary Device For Flush Toilet (AREA)
EP15382173.1A 2015-04-09 2015-04-09 Système d'évacuation de déchets sous vide pour un module de toilettes dans un véhicule de transport public et un tel module comprenant ledit système d'évacuation Withdrawn EP3078783A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15382173.1A EP3078783A1 (fr) 2015-04-09 2015-04-09 Système d'évacuation de déchets sous vide pour un module de toilettes dans un véhicule de transport public et un tel module comprenant ledit système d'évacuation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15382173.1A EP3078783A1 (fr) 2015-04-09 2015-04-09 Système d'évacuation de déchets sous vide pour un module de toilettes dans un véhicule de transport public et un tel module comprenant ledit système d'évacuation

Publications (1)

Publication Number Publication Date
EP3078783A1 true EP3078783A1 (fr) 2016-10-12

Family

ID=53498937

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15382173.1A Withdrawn EP3078783A1 (fr) 2015-04-09 2015-04-09 Système d'évacuation de déchets sous vide pour un module de toilettes dans un véhicule de transport public et un tel module comprenant ledit système d'évacuation

Country Status (1)

Country Link
EP (1) EP3078783A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111608243A (zh) * 2020-04-16 2020-09-01 杭州智笙生物技术有限公司 一种市政管道压力联动单体智控排污系统
DE202023107611U1 (de) 2023-03-15 2024-02-21 Barat Alte S.L.U. Abwasserentsorgungssystem in Toilettenmodulen

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4413493A1 (de) * 1993-04-19 1994-10-20 Evac Ab Absaugeabort mit elektrischer Steuerung
EP1840282A2 (fr) * 2006-03-31 2007-10-03 Evac International Oy Système d'égout sous vide

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4413493A1 (de) * 1993-04-19 1994-10-20 Evac Ab Absaugeabort mit elektrischer Steuerung
EP1840282A2 (fr) * 2006-03-31 2007-10-03 Evac International Oy Système d'égout sous vide

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111608243A (zh) * 2020-04-16 2020-09-01 杭州智笙生物技术有限公司 一种市政管道压力联动单体智控排污系统
CN111608243B (zh) * 2020-04-16 2021-07-23 杭州智笙生物技术有限公司 一种市政管道压力联动单体智控排污系统
DE202023107611U1 (de) 2023-03-15 2024-02-21 Barat Alte S.L.U. Abwasserentsorgungssystem in Toilettenmodulen

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