EP1291468A2 - Vacuum flush system with temporary-retention waste water tank - Google Patents
Vacuum flush system with temporary-retention waste water tank Download PDFInfo
- Publication number
- EP1291468A2 EP1291468A2 EP01945352A EP01945352A EP1291468A2 EP 1291468 A2 EP1291468 A2 EP 1291468A2 EP 01945352 A EP01945352 A EP 01945352A EP 01945352 A EP01945352 A EP 01945352A EP 1291468 A2 EP1291468 A2 EP 1291468A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- tank
- outlet pipe
- disposal system
- discharge valve
- wastewater
- 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- Withdrawn
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D35/00—Sanitation
- B61D35/005—Toilet facilities
- B61D35/007—Toilet facilities comprising toilet waste receiving, treatment, storage, disposal or removal devices
Definitions
- the present invention relates to a vacuum disposal system with wastewater temporary retention tank for railway carriages, of the type that includes a wastewater tank to which is connected at least one toilet bowl and which has an outlet pipe with a discharge valve.
- Vacuum disposal systems for railways involve the fitting of toilets whose outlets have traditionally been connected to a wastewater collector tank of high capacity. This tank must be emptied at intervals, for example when the train reaches one of the ends of its route, and this naturally complicates and increases the cost of maintenance of the installation.
- Some recent systems include an intermediate tank, having a volume of four or five litres, connected to each toilet bowl, so that one dose of wastewater passes rapidly and with low energy consumption from the bowl to the intermediate tank, and this intermediate tank later discharges into a larger tank, which is emptied at intervals.
- This design improves the efficiency of the system, due to the fact that it requires lower consumption for emptying the contents of the toilet bowl into the intermediate tank, but it does not eliminate the above-mentioned disadvantages associated with the maintenance, volume and weight of the system.
- the object of the present invention is to solve the aforesaid disadvantages by developing a vacuum-disposal system that does not require maintenance and occupies a small space.
- the vacuum-disposal system of the present invention is characterised in that said tank is placed under the floor of the railway carriage and in that said outlet pipe is open at its bottom part facing down on to the track, the discharge valve being connected to a control module.
- the wastewater tank can be emptied automatically when the train is running through an uninhabited zone, thereby eliminating the need for maintenance operations related with emptying of the tank. Furthermore, the tank can be small in size and of low weight.
- the tank is substantially cylindrical and is placed vertically underneath the floor of the carriage, the outlet pipe being connected at its bottom part.
- a tank of these characteristics can be emptied by gravity or under pressure.
- the tank has associated therewith a level detector; the emptying process can thus be activated either after a certain number of operating cycles or when a certain level of wastewater is reached, thereby preventing excessive filling of the tank from occurring.
- the tank has a volume of between five and twenty litres; in a preferred embodiment, it has a volume of about ten litres.
- the system essentially comprises a toilet bowl 1, a wastewater tank 2 to which is connected the outlet from the bowl 1 through a cut-off valve 3 and a pipe 4, a pneumatic unit 5 which includes electrically-operated valves for controlling the various organs of the system and an ejector for causing vacuum into the tank 2, and a control module 6.
- the tank 2 is mounted underneath the floor P of the carriage and has at its lower part an outlet pipe 7 with a discharge valve 8, governed by the control module 6, as will be explained below.
- the outlet pipe 7 is open at its lower part, so that the wastewater discharged from the tank 2 drops onto the track.
- a level detector 9 Associated with the tank, provision is also made for a level detector 9, whose signal is supplied to the control module 6.
- the tank 2 can have a capacity of some ten litres, although this figure is not restrictive; in any case, the volume of the tank 2 must be suitable for housing at least some wastewater discharge units from the toilet bowl 1.
- the pneumatic assembly 5 and the control module 6 have connections (in general not shown) to the various pneumatic and electrical components of the system.
- the ejector (not shown) of the pneumatic assembly 5 is connected through a pipe 10 to the tank 2, such as to cause a depression therein, synchronised with the opening of the cut-off valve 3 and with the discharge of water in the toilet bowl 1, all this with the function that a unit of wastewater passes from the toilet bowl 1 to the tank 2.
- the discharge valve 8 from the tank is controlled by one of the electrically-operated valves of the pneumatic assembly 5, which is in turn governed by the control module, as will be described below.
- the contents of the tank are emptied onto the track when the conditions are appropriate, that is, away from inhabited centres.
- the control module 6 governs the discharge from the tank by opening the discharge valve 8 when, following completion of a predetermined number of toilet bowl discharge cycles, or once a certain level in the tank (indicated by the level detector 9) has been reached, the train is travelling at a speed higher than a predetermined threshold, for example 40 km/h. This ensures that the train is in an uninhabited zone; furthermore, thanks to the speed of the train, the discharge takes place over a relatively long section of the track, thereby minimising its impact.
- the tank of the system of the invention can be of relatively low volume and occupy little space, and at the same time it does not require intervention at intervals in order to empty it.
- the emptying of the tank can occur simply by gravity or by simultaneously inducing a partial pressure in the tank itself through a suitable connection (not shown in the figures) with an element of the pneumatic assembly.
- the operating parameters of the discharge such as the number of cycles before the discharge is carried out, or the cited threshold speed, will depend on the characteristics of the system and on the zone through which the train is travelling, and will preferably be programmable.
Abstract
Description
- The present invention relates to a vacuum disposal system with wastewater temporary retention tank for railway carriages, of the type that includes a wastewater tank to which is connected at least one toilet bowl and which has an outlet pipe with a discharge valve.
- Vacuum disposal systems for railways involve the fitting of toilets whose outlets have traditionally been connected to a wastewater collector tank of high capacity. This tank must be emptied at intervals, for example when the train reaches one of the ends of its route, and this naturally complicates and increases the cost of maintenance of the installation.
- Moreover, it should be taken into account that in systems designed for railways it is always preferable to avoid high volumes and weights, such as those involved in a tank of this type.
- Another disadvantage of this system with general tank is that the stations need to have suitable equipment for emptying such tank.
- Some recent systems include an intermediate tank, having a volume of four or five litres, connected to each toilet bowl, so that one dose of wastewater passes rapidly and with low energy consumption from the bowl to the intermediate tank, and this intermediate tank later discharges into a larger tank, which is emptied at intervals.
- This design improves the efficiency of the system, due to the fact that it requires lower consumption for emptying the contents of the toilet bowl into the intermediate tank, but it does not eliminate the above-mentioned disadvantages associated with the maintenance, volume and weight of the system.
- The object of the present invention is to solve the aforesaid disadvantages by developing a vacuum-disposal system that does not require maintenance and occupies a small space.
- In accordance with this object, the vacuum-disposal system of the present invention is characterised in that said tank is placed under the floor of the railway carriage and in that said outlet pipe is open at its bottom part facing down on to the track, the discharge valve being connected to a control module.
- Thanks to these structural characteristics, after a predetermined number of operating cycles of the toilet the wastewater tank can be emptied automatically when the train is running through an uninhabited zone, thereby eliminating the need for maintenance operations related with emptying of the tank. Furthermore, the tank can be small in size and of low weight.
- Preferably, the tank is substantially cylindrical and is placed vertically underneath the floor of the carriage, the outlet pipe being connected at its bottom part.
- A tank of these characteristics can be emptied by gravity or under pressure.
- In accordance with a preferred embodiment of the invention, the tank has associated therewith a level detector; the emptying process can thus be activated either after a certain number of operating cycles or when a certain level of wastewater is reached, thereby preventing excessive filling of the tank from occurring.
- Advantageously, the tank has a volume of between five and twenty litres; in a preferred embodiment, it has a volume of about ten litres.
- For a better understanding of all that has been outlined some drawings are attached which show, schematically and solely by way of non-restrictive example, a practical case of embodiment.
- In said drawings, the sole figure shows a diagram of a vacuum disposal system in accordance with one embodiment of the invention, fitted onto a railway carriage.
- The system essentially comprises a
toilet bowl 1, awastewater tank 2 to which is connected the outlet from thebowl 1 through a cut-offvalve 3 and apipe 4, apneumatic unit 5 which includes electrically-operated valves for controlling the various organs of the system and an ejector for causing vacuum into thetank 2, and acontrol module 6. - In accordance with one particular feature of the invention, the
tank 2 is mounted underneath the floor P of the carriage and has at its lower part anoutlet pipe 7 with adischarge valve 8, governed by thecontrol module 6, as will be explained below. Theoutlet pipe 7 is open at its lower part, so that the wastewater discharged from thetank 2 drops onto the track. - Associated with the tank, provision is also made for a
level detector 9, whose signal is supplied to thecontrol module 6. - The
tank 2 can have a capacity of some ten litres, although this figure is not restrictive; in any case, the volume of thetank 2 must be suitable for housing at least some wastewater discharge units from thetoilet bowl 1. - The
pneumatic assembly 5 and thecontrol module 6 have connections (in general not shown) to the various pneumatic and electrical components of the system. - In particular, on the one hand, the ejector (not shown) of the
pneumatic assembly 5 is connected through apipe 10 to thetank 2, such as to cause a depression therein, synchronised with the opening of the cut-offvalve 3 and with the discharge of water in thetoilet bowl 1, all this with the function that a unit of wastewater passes from thetoilet bowl 1 to thetank 2. - On the other hand, the
discharge valve 8 from the tank is controlled by one of the electrically-operated valves of thepneumatic assembly 5, which is in turn governed by the control module, as will be described below. - In accordance with the invention, the contents of the tank are emptied onto the track when the conditions are appropriate, that is, away from inhabited centres. For this purpose, the
control module 6 governs the discharge from the tank by opening thedischarge valve 8 when, following completion of a predetermined number of toilet bowl discharge cycles, or once a certain level in the tank (indicated by the level detector 9) has been reached, the train is travelling at a speed higher than a predetermined threshold, for example 40 km/h. This ensures that the train is in an uninhabited zone; furthermore, thanks to the speed of the train, the discharge takes place over a relatively long section of the track, thereby minimising its impact. - Thanks to this characteristics, the tank of the system of the invention can be of relatively low volume and occupy little space, and at the same time it does not require intervention at intervals in order to empty it.
- When the
discharge valve 8 is opened, the emptying of the tank can occur simply by gravity or by simultaneously inducing a partial pressure in the tank itself through a suitable connection (not shown in the figures) with an element of the pneumatic assembly. - Although one specific embodiment of this invention has been described and shown, it is obvious that an expert in the subject would be able to introduce variations and make changes, or replace the details by others that are technically equivalent, without departing from the scope of protection defined by the appended claims.
- For example, although an approximately cylindrical tank, arranged vertically, has been shown, the geometric characteristics and orientation could be changed. Similarly, a single tank could be used for more than one toilet bowl, depending on its volume and the layout of the toilets in the carriage.
- On the other hand, the operating parameters of the discharge, such as the number of cycles before the discharge is carried out, or the cited threshold speed, will depend on the characteristics of the system and on the zone through which the train is travelling, and will preferably be programmable.
Claims (5)
- A vacuum disposal system with wastewater temporary retention tank for railway carriages, which includes a wastewater tank (2) to which is connected at least one toilet bowl (1) and which has an outlet pipe (7) with a discharge valve (8), characterised in that said tank (2) is placed under the floor (P) of the railway carriage and in that said outlet pipe (7) is open at its bottom part facing down on to the track, the discharge valve (8) being connected to a control module (6).
- A disposal system as claimed in Claim 1, characterised in that said tank (2) is substantially cylindrical and is placed vertically underneath the floor (P) of the carriage, the outlet pipe (7) being connected at its bottom part.
- A disposal system as claimed in Claim 1 or Claim 2, characterised in that the tank (2) has associated with it a level detector (9).
- A disposal system as claimed in any of the preceding claims, characterised in that the tank (2) has a volume of between five and twenty litres.
- A disposal system as claimed in Claim 4, characterised in that the tank (2) has a volume of about ten litres.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ES200001569U | 2000-06-12 | ||
ES200001569U ES1046526Y (en) | 2000-06-12 | 2000-06-12 | VACUUM EVACUATION SYSTEM WITH WASTEWATER RESIDUAL WATER TANK. |
PCT/ES2001/000237 WO2001096674A2 (en) | 2000-06-12 | 2001-06-08 | Vacuum flush system with temporary-retention waste water tank |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1291468A2 true EP1291468A2 (en) | 2003-03-12 |
Family
ID=8494002
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01945352A Withdrawn EP1291468A2 (en) | 2000-06-12 | 2001-06-08 | Vacuum flush system with temporary-retention waste water tank |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1291468A2 (en) |
CN (1) | CN1383410A (en) |
ES (1) | ES1046526Y (en) |
WO (1) | WO2001096674A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITTO20091005A1 (en) * | 2009-12-21 | 2011-06-22 | Gen Vacuum S R L | SYSTEM AND METHOD FOR THE DISCHARGE OF LIQUAM FROM VEHICLES |
WO2014090500A1 (en) * | 2012-12-14 | 2014-06-19 | Siemens Aktiengesellschaft | Rail vehicle with pressure surge-safe greywater line |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100467320C (en) * | 2005-07-07 | 2009-03-11 | 浙江工业大学 | Sanitation device for train carriage toilet |
EA016970B8 (en) * | 2009-09-15 | 2012-10-30 | Ооо Нпц "Экспресс" | The locking device for holding tank pipes |
DE202011002009U1 (en) | 2011-01-27 | 2012-04-30 | Hugo Vogelsang Maschinenbau Gmbh | Absaugkupplung |
DE202014003059U1 (en) * | 2014-04-10 | 2015-07-31 | Evac Gmbh | Pneumatic compact vacuum toilet |
CN106080635A (en) * | 2016-06-30 | 2016-11-09 | 中铁伟业(宁波)轨道交通装备有限公司 | A kind of gas-liquid-solid separation device |
CN107472278B (en) * | 2017-08-08 | 2018-03-23 | 何莉 | A kind of automatic pollution discharge method |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2613186A (en) * | 1952-10-07 | Cleaning composition | ||
US1536823A (en) * | 1920-05-08 | 1925-05-05 | Dobson Albert | Undercar waste bowl |
US1501150A (en) * | 1923-03-31 | 1924-07-15 | Ebb Warren | Toilet for passenger cars |
US1604456A (en) * | 1925-08-31 | 1926-10-26 | Abraham L Levy | Railroad toilet |
DE19523702A1 (en) * | 1995-06-29 | 1997-01-02 | Guenther Buehler | Toilet for railway passenger carriage |
DK171589B1 (en) * | 1996-01-19 | 1997-02-10 | Abb Daimler Benz Transp | A sanitary cell |
-
2000
- 2000-06-12 ES ES200001569U patent/ES1046526Y/en not_active Expired - Lifetime
-
2001
- 2001-06-08 EP EP01945352A patent/EP1291468A2/en not_active Withdrawn
- 2001-06-08 CN CN 01801674 patent/CN1383410A/en active Pending
- 2001-06-08 WO PCT/ES2001/000237 patent/WO2001096674A2/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO0196674A3 * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ITTO20091005A1 (en) * | 2009-12-21 | 2011-06-22 | Gen Vacuum S R L | SYSTEM AND METHOD FOR THE DISCHARGE OF LIQUAM FROM VEHICLES |
EP2338761A1 (en) | 2009-12-21 | 2011-06-29 | General Vacuum s.r.l. | System and method for draining sewage from the vehicles |
WO2014090500A1 (en) * | 2012-12-14 | 2014-06-19 | Siemens Aktiengesellschaft | Rail vehicle with pressure surge-safe greywater line |
US9758179B2 (en) | 2012-12-14 | 2017-09-12 | Siemens Aktiengesellschaft | Rail vehicle with pressure surge-safe graywater line |
Also Published As
Publication number | Publication date |
---|---|
ES1046526U (en) | 2001-01-01 |
WO2001096674A2 (en) | 2001-12-20 |
CN1383410A (en) | 2002-12-04 |
WO2001096674A3 (en) | 2002-04-11 |
ES1046526Y (en) | 2001-06-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US5369811A (en) | Vacuum toilet system with odor filter | |
EP1035261B1 (en) | Vacuum toilet system | |
US5454936A (en) | Vacuum toilet system | |
US4865631A (en) | Vacuum sewage system | |
US5396668A (en) | System for discharging wastes | |
US4199828A (en) | Vacuum toilet apparatus for mobile units | |
US5644802A (en) | Vacuum sewer arrangement | |
JPS6234578B2 (en) | ||
EP1291468A2 (en) | Vacuum flush system with temporary-retention waste water tank | |
EP2400071A1 (en) | Vacuum toilet system | |
US4955091A (en) | Method and apparatus for a vacuum assisted toilet system | |
US10767360B2 (en) | Toilet arrangement | |
US1115857A (en) | Sewage-disposal and water-purification apparatus. | |
EP0287350B1 (en) | Vacuum sewage collecting system | |
AU7678696A (en) | Waste tank for vacuum sewage system | |
JPH0650260A (en) | Drainage | |
US6206647B1 (en) | Waste water disposal system | |
RU52794U1 (en) | TOILET VEHICLE SYSTEM | |
US847592A (en) | Triple alternating siphon. | |
RU2070672C1 (en) | Hydraulic ram | |
RU2099219C1 (en) | Railway car toilet system | |
CA2209661C (en) | Waste tank for vacuum sewage system | |
JPH05295776A (en) | Filth transport device | |
SU1714214A1 (en) | Device for cleaning water tanks | |
HU200812B (en) | Apparatus for inducting fluid into duct being under pressure |
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: 20020208 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
AX | Request for extension of the european patent |
Extension state: AL LT LV MK RO SI |
|
17Q | First examination report despatched |
Effective date: 20080605 |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20090627 |