ES2366504A1 - Toilet with vacuum evacuation system. (Machine-translation by Google Translate, not legally binding) - Google Patents
Toilet with vacuum evacuation system. (Machine-translation by Google Translate, not legally binding) Download PDFInfo
- Publication number
- ES2366504A1 ES2366504A1 ES200801381A ES200801381A ES2366504A1 ES 2366504 A1 ES2366504 A1 ES 2366504A1 ES 200801381 A ES200801381 A ES 200801381A ES 200801381 A ES200801381 A ES 200801381A ES 2366504 A1 ES2366504 A1 ES 2366504A1
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- Spain
- Prior art keywords
- tank
- toilet
- cup
- valve
- toilet according
- 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
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 4
- 239000010439 graphite Substances 0.000 claims abstract description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 4
- 239000000843 powder Substances 0.000 claims abstract description 4
- 239000002351 wastewater Substances 0.000 claims abstract description 3
- 239000000835 fiber Substances 0.000 claims abstract 2
- 239000011521 glass Substances 0.000 claims abstract 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 230000002745 absorbent Effects 0.000 claims description 3
- 239000002250 absorbent Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 2
- 229910021529 ammonia Inorganic materials 0.000 claims description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 2
- 230000006866 deterioration Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 101100327917 Caenorhabditis elegans chup-1 gene Proteins 0.000 description 9
- 235000019645 odor Nutrition 0.000 description 8
- 239000002699 waste material Substances 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- 238000005273 aeration Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 101100008047 Caenorhabditis elegans cut-3 gene Proteins 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Aviation & Aerospace Engineering (AREA)
- Vehicle Waterproofing, Decoration, And Sanitation Devices (AREA)
Abstract
Description
Inodoro con sistema de evacuación por vacío.Toilet with vacuum evacuation system.
La presente invención se refiere a un inodoro con sistema de evacuación por vacío, para su utilización preferiblemente en vehículos, tales como, por ejemplo, ferrocarriles.The present invention relates to a toilet with vacuum evacuation system, for use preferably in vehicles, such as, for example, Railways
En las últimas décadas se han desarrollado diferentes sistemas de inodoro con evacuación por vacío para evitar el vertido de los residuos al exterior, por ejemplo en el caso de ferrocarriles a la vía.In recent decades they have developed Different toilet systems with vacuum evacuation to avoid the dumping of waste abroad, for example in the case of Railroads to the track.
Otra ventaja que presentan los sistemas de inodoro con evacuación por vacío es la reducción del agua utilizada para la limpieza de la taza y el arrastre de los residuos hasta un depósito, si éste existe, en comparación con el agua necesaria en los inodoros de gravedad.Another advantage of the systems of Toilet with vacuum evacuation is the reduction of water used for cleaning the cup and dragging the waste up to a tank, if this exists, compared to the water needed in gravity toilets.
Esta reducción de la cantidad de agua necesaria para cada uso es especialmente importante en los vehículos, ya que permite reducir el tamaño del tanque de agua situado en el vehículo para alimentar el sistema de limpieza de la taza y, en consecuencia, también reducir su peso.This reduction in the amount of water needed for each use it is especially important in vehicles, since allows to reduce the size of the water tank located in the vehicle to feed the cup cleaning system and, consequently, Also reduce your weight.
El titular de la presente solicitud ha
desarrollado algunos sistemas de inodoro con evacuación por vacío,
tales como los descritos en el modelo de utilidad U200001568 o en la
patente de invención
P9201120.The holder of the present application has developed some vacuum evacuation toilet systems, such as those described in utility model U200001568 or in the invention patent
P9201120.
Sin embargo, estos sistemas de inodoro con evacuación por vacío presentan el inconveniente de que sus costes de mantenimiento son elevados.However, these toilet systems with vacuum evacuation have the disadvantage that their costs of Maintenance are high.
El componente que presenta más averías y problemas de mantenimiento es la válvula de corte que cierra el paso entre la taza y el depósito de acumulación de residuos debido a atascos ocasionados por la suciedad y, principalmente, por objetos arrojados a la taza por los pasajeros, tales como trapos, jeringuillas, bolígrafos, etc.The component with the most breakdowns and maintenance issues is the shut-off valve that closes the passage between the cup and the waste accumulation tank due to traffic jams caused by dirt and, mainly, by objects thrown into the cup by passengers, such as rags, syringes, pens, etc.
Por lo tanto, resulta evidente la necesidad de proporcionar un inodoro con sistema de evacuación por vacío con una eficiencia y una fiabilidad mejoradas, reduciendo los periodos de inmovilización del material y los costes de explotación de las compañías ferroviarias.Therefore, the need for provide a toilet with vacuum evacuation system with a improved efficiency and reliability, reducing periods of immobilization of the material and the operating costs of the railway companies
Con el inodoro y el sistema de la invención se consiguen resolver los inconvenientes citados, presentando otras ventajas que se describirán.With the toilet and the system of the invention, They manage to solve the aforementioned problems, presenting other advantages to be described.
El inodoro con sistema de evacuación por vacío de la presente invención comprende una taza, un depósito para la recepción de aguas residuales, una válvula de corte entre la salida de la taza y la entrada del depósito, y un eyector de aire conectado al depósito, y se caracteriza por el hecho de que dicha válvula de corte es una válvula de esfera provista de un sistema de juntas a base de politetrafluoretileno cargado con grafito, fibra de vidrio y/o polvo de acero.The toilet with vacuum evacuation system of the present invention comprises a cup, a reservoir for the wastewater reception, a shutoff valve between the outlet of the cup and the inlet of the tank, and a connected air ejector to the tank, and is characterized by the fact that said valve cutting is a ball valve provided with a joint system to graphite-loaded polytetrafluoroethylene base, fiberglass and / or steel powder.
Gracias a esta característica, el sistema de juntas de la válvula de corte es insensible al deterioro que podría producir la presencia de objetos arrojados indebidamente por los pasajeros a la taza, tales como, por ejemplo, jeringuillas, trapos, papeles, etc. De esta manera, el coste del mantenimiento debido a la válvula de corte se reduce considerablemente en comparación con las válvulas de corte utilizadas actualmente.Thanks to this feature, the system shut-off valve seals is insensitive to deterioration that could produce the presence of objects thrown unduly by the passengers to the cup, such as, for example, syringes, rags, papers, etc. In this way, the cost of maintenance due to the shut-off valve is greatly reduced compared to shut-off valves currently used.
Ventajosamente, dicha taza presenta en su parte inferior una forma troncocónica, para facilitar la construcción y la caída de los residuos hacia el fondo de la taza.Advantageously, said cup has in its part bottom a conical shape, to facilitate the construction and Drop of waste towards the bottom of the cup.
También ventajosamente, dicha taza está hecha a partir de una única pieza de chapa de acero, preferiblemente obtenida por embutición para reducir el coste de construcción y mejorar la calidad de los acabados, ya que no se utilizan soldaduras.Also advantageously, said cup is made to from a single piece of sheet steel, preferably obtained by drawing to reduce the cost of construction and improve the quality of finishes, since they are not used welds
Preferentemente, entre dicho depósito y el eyector de aire está colocado un filtro de olores constituido por un recipiente en el que se aloja un cartucho filtrante, siendo dicho recipiente que constituye el filtro de olores cilíndrico y el cartucho filtrante de forma tubular y está compuesto por dos secciones adyacentes con materiales absorbentes específicos de amoníaco y ácido sulfhídrico.Preferably, between said deposit and the air ejector is placed an odor filter consisting of a container in which a filter cartridge is housed, said being container that constitutes the cylindrical odor filter and the tubular filter cartridge and consists of two adjacent sections with specific absorbent materials of ammonia and hydrogen sulfide.
Ventajosamente, dicho filtro de olores comprende una válvula anti-retorno que permite el paso de los gases solamente en la dirección de salida.Advantageously, said odor filter comprises a non-return valve that allows the passage of gases only in the exit direction.
Según una realización preferida, dicha válvula anti-retorno está formada por una lámina de goma flexible montada sobre una chapa perforada.According to a preferred embodiment, said valve anti-return is formed by a rubber sheet flexible mounted on a perforated sheet.
Para mejor comprensión de cuanto se ha expuesto se acompañan unos dibujos en los que, esquemáticamente y tan sólo a título de ejemplo no limitativo, se representa un caso práctico de realización.For a better understanding of how much has been exposed Some drawings are accompanied in which, schematically and only to non-limiting example title, a case study of realization.
La figura 1 es una vista esquemática del inodoro y el sistema de evacuación por vacío de la presente invención.Figure 1 is a schematic view of the toilet and the vacuum evacuation system of the present invention.
Tal como se puede apreciar en la figura 1, el inodoro con sistema de evacuación por vacío de la presente invención comprende una taza de inodoro 1 conectada a un depósito de aguas residuales 2.As can be seen in Figure 1, the toilet with vacuum evacuation system of the present invention comprises a toilet bowl 1 connected to a water tank residual 2.
Dicha taza de inodoro 1 es de forma troncocónica
en su parte interior y está formada a partir de una única pieza de
chapa de acero obtenida por embuti-
ción.Said toilet bowl 1 is truncated in its inner part and is formed from a single piece of sheet steel obtained by drawing
tion.
Entre dicha taza de inodoro 1 y dicho depósito 2 está dispuesta una válvula de corte 3, que es una válvula de esfera provista de un sistema de juntas a base de politetrafluoretileno cargado con grafito, fibra de vidrio y/o polvo de acero, con el propósito de minimizar su mantenimiento.Between said toilet bowl 1 and said tank 2 a cutting valve 3 is arranged, which is a ball valve provided with a joint system based on polytetrafluoroethylene loaded with graphite, fiberglass and / or steel powder, with the purpose of minimizing its maintenance.
A dicho depósito 2 está conectado un filtro de olores 4 que comprende un cartucho filtrante 5 de forma tubular, compuesto de dos secciones adyacentes rellenas con un material absorbente de acción selectiva sobre el NH_{3} y el SH_{2}.To said tank 2 is connected a filter of odors 4 comprising a tubular shaped filter cartridge 5, composed of two adjacent sections filled with a material absorbent selective action on NH3 and SH2.
Este filtro de olores 4 comprende una válvula anti-retorno 6, que está formada por una lámina de goma flexible montada sobre una chapa perforada para facilitar el paso de los gases únicamente en la dirección de salida.This odor filter 4 comprises a valve anti-return 6, which is formed by a sheet of flexible rubber mounted on a perforated sheet to facilitate the passage of gases only in the exit direction.
El inodoro de la presente invención funciona de la siguiente manera:The toilet of the present invention functions as as follows:
Cuando un usuario o pasajero deposita en la taza del inodoro 1 algún residuo, éste presiona un pulsador (no representado) para que una cantidad aproximada de unos 325 cc de agua sean suministrada a la taza 1. Esta cantidad de agua proviene de un tanque de agua 7 y es suministrada a la taza 1 mediante la acción de una bomba dosificadora 8.When a user or passenger deposits in the cup from the toilet 1 some residue, it presses a button (no represented) so that an approximate amount of about 325 cc of water be supplied to cup 1. This amount of water comes of a water tank 7 and is supplied to cup 1 by the action of a dosing pump 8.
Cuando el agua llega a la taza 1, un accionador rotativo neumático 9 conectado con la válvula de corte 3 la abre y pone en comunicación directa la taza 1 con el depósito 2, siendo empujados los residuos por la acción de la diferencia de presión existente entre la taza 1, que está sometida a la presión atmosférica, y el interior del depósito 2, que está a una presión inferior a la atmosférica.When water reaches cup 1, an actuator pneumatic rotary 9 connected to the shut-off valve 3 opens it and puts cup 1 in direct communication with tank 2, being pushed the waste by the action of the pressure difference existing between cup 1, which is under pressure atmospheric, and inside the tank 2, which is at a pressure lower than atmospheric
Al cabo de un cierto tiempo la válvula de corte 3 se activa cerrando la comunicación de la taza 1 con el depósito 2. La bomba de dosificación 8 añade una cierta cantidad de agua, estimada en 325 cc para limpiar la taza 1, para formar un remanente de agua en el fondo de la taza 1, evitando que los residuos se peguen a la taza 1 y mejorando la estanqueidad de la válvula de corte 3.After a certain time the shut-off valve 3 is activated by closing the communication of cup 1 with tank 2. Dosing pump 8 adds a certain amount of water, estimated at 325 cc to clean cup 1, to form a remnant of water at the bottom of cup 1, preventing waste from getting stick to cup 1 and improving the tightness of the valve cut 3.
El aire de fugas que penetra en el sistema en condiciones de vacío es extraído por la succión creada por un eyector 10 a través de dicho filtro de olores 4. Un sensor de presión 11 informa al sistema de control del proceso del nivel de vacío existente en el interior del depósito 2, para activar el eyector 10 y producir una depresión en la parte superior del filtro de olores 4 para aumentar el nivel de vacío hasta alcanzar un nivel predeterminado. El eyector 10 permanecerá desactivado hasta que el nivel de vacío baje a un nivel inferior predeterminado, en el que se volverá a activar el eyector 10 para mantener el nivel de vacío entre dos niveles predeterminado.The leaking air that enters the system in vacuum conditions is extracted by the suction created by a ejector 10 through said odor filter 4. A sensor of pressure 11 informs the process control system of the level of vacuum inside the tank 2, to activate the ejector 10 and produce a depression at the top of the filter of odors 4 to increase the vacuum level to a level predetermined. Ejector 10 will remain deactivated until the vacuum level lower to a predetermined lower level, at which will re-activate ejector 10 to maintain the vacuum level Between two default levels.
La acción de cierre de la válvula anti-retorno 6 evita que el aire exterior pueda introducirse en el sistema al dejar de funcionar el eyector 10.The closing action of the valve anti-return 6 prevents outside air from being able to enter the system when the ejector 10 stops working.
El filtro de olores 4 evita que el mal olor existente en el interior del depósito 2 salga al exterior por el efecto absorbente del cartucho filtrante 5 al funcionar el eyector 10.The odor filter 4 prevents bad smell existing inside the tank 2 go outside by the absorbing effect of filter cartridge 5 when the ejector is running 10.
El depósito 2 comprende unos sensores de nivel 12 para informar a una estación de control en el caso de que se alcanzaran los niveles predeterminados de llenado.Tank 2 comprises level sensors 12 to inform a control station in the event that will reach predetermined fill levels.
Además, el depósito 2 comprende dos válvulas de descarga 13, situadas una a cada lado del depósito 2, para permitir el vaciado por los dos lados.In addition, tank 2 comprises two valves discharge 13, located one on each side of the tank 2, to allow the emptying on both sides.
El depósito 2 también comprende unas tuberías de aireación 14 para ponerlo en comunicación con el exterior y eliminar el vacío durante la operación de vaciado.The tank 2 also includes some pipes aeration 14 to put it in communication with the outside and eliminate the vacuum during the emptying operation.
Unos ejes mecánicos 15 unen las válvulas de descarga 13 con las tuberías de aireación 14 para que actúen simultáneamente al abrir o cerrar la comunicación del interior del depósito 2 con el exterior bajo la acción de unas palancas 16 para eliminar el vacío durante la operación de vaciado.Mechanical axes 15 join the valves of discharge 13 with aeration pipes 14 to act simultaneously when opening or closing communication inside the tank 2 with the outside under the action of levers 16 for Eliminate the vacuum during the emptying operation.
El depósito 2 también comprende un sistema de limpieza 17 formado por unas tuberías para inyectar agua a presión al interior del depósito 2 para limpiarlo durante el proceso de vaciado.The tank 2 also comprises a system of cleaning 17 formed by pipes to inject water under pressure inside the tank 2 to clean it during the process of emptying
Se apreciará que el esquema representado en la figura 1 incluye otros elementos que, por motivos de simplicidad, no se describen, ya que no forman parte de la presente invención y son evidentes para cualquier experto en la materia, ya que se utilizan normalmente en este tipo de instalaciones.It will be appreciated that the scheme represented in the Figure 1 includes other elements that, for reasons of simplicity, do not are described, since they are not part of the present invention and are evident to any expert in the field, since they are used Normally in this type of facility.
A pesar de que se ha hecho referencia a una realización concreta de la invención, es evidente para un experto en la materia que el inodoro con sistema de evacuación descritos son susceptibles de numerosas variaciones y modificaciones, y que todos los detalles mencionados pueden ser substituidos por otros técnicamente equivalentes, sin apartarse del ámbito de protección definido por las reivindicaciones adjuntas.Although reference has been made to a Concrete embodiment of the invention is evident to an expert in the matter that the toilet with evacuation system described are susceptible of numerous variations and modifications, and that all the mentioned details can be replaced by others technically equivalent, without departing from the scope of protection defined by the appended claims.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200801381A ES2366504B1 (en) | 2008-05-14 | 2008-05-14 | TOILET WITH VACUUM EVACUATION SYSTEM. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES200801381A ES2366504B1 (en) | 2008-05-14 | 2008-05-14 | TOILET WITH VACUUM EVACUATION SYSTEM. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2366504A1 true ES2366504A1 (en) | 2011-10-21 |
| ES2366504B1 ES2366504B1 (en) | 2012-09-07 |
Family
ID=44731153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES200801381A Expired - Fee Related ES2366504B1 (en) | 2008-05-14 | 2008-05-14 | TOILET WITH VACUUM EVACUATION SYSTEM. |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES2366504B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3170941A1 (en) * | 2015-11-20 | 2017-05-24 | LW-Group | System for cleaning a septic tank of a vehicle and a method performing the same |
| WO2022106135A1 (en) * | 2020-11-19 | 2022-05-27 | Trainvac GmbH | Vacuum toilet |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4298207A (en) * | 1980-08-29 | 1981-11-03 | The Marlo Company, Inc. | Resilient gasket material |
| GB2243166A (en) * | 1990-04-20 | 1991-10-23 | Metra Oy Ab | Vacuum toilet system |
| US5139655A (en) * | 1987-08-24 | 1992-08-18 | Sealand Technology, Inc. | Integrated system marine sanitation device |
| GB2265627A (en) * | 1992-03-31 | 1993-10-06 | Tba Industrial Products Ltd | Sheet sealing material |
| EP0584031A2 (en) * | 1992-06-01 | 1994-02-23 | Tecnicas Modulares E Industriales, S.A. Temoinsa | Vacuum toilet system for moving installations and civil constructions |
| EP0801254A1 (en) * | 1996-03-13 | 1997-10-15 | Flexitallic Sealing Materials Ltd | Preferred orientation sealing material |
| US5909968A (en) * | 1996-07-09 | 1999-06-08 | Evac International Oy | Vacuum toilet unit |
| US5931642A (en) * | 1995-10-31 | 1999-08-03 | Sealand Technology, Inc. | Plastic combined vacuum and holding tank |
| US20020158424A1 (en) * | 1999-10-21 | 2002-10-31 | Daikin Industries, Ltd. | Seal ring |
-
2008
- 2008-05-14 ES ES200801381A patent/ES2366504B1/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4298207A (en) * | 1980-08-29 | 1981-11-03 | The Marlo Company, Inc. | Resilient gasket material |
| US5139655A (en) * | 1987-08-24 | 1992-08-18 | Sealand Technology, Inc. | Integrated system marine sanitation device |
| GB2243166A (en) * | 1990-04-20 | 1991-10-23 | Metra Oy Ab | Vacuum toilet system |
| GB2265627A (en) * | 1992-03-31 | 1993-10-06 | Tba Industrial Products Ltd | Sheet sealing material |
| EP0584031A2 (en) * | 1992-06-01 | 1994-02-23 | Tecnicas Modulares E Industriales, S.A. Temoinsa | Vacuum toilet system for moving installations and civil constructions |
| US5931642A (en) * | 1995-10-31 | 1999-08-03 | Sealand Technology, Inc. | Plastic combined vacuum and holding tank |
| EP0801254A1 (en) * | 1996-03-13 | 1997-10-15 | Flexitallic Sealing Materials Ltd | Preferred orientation sealing material |
| US5909968A (en) * | 1996-07-09 | 1999-06-08 | Evac International Oy | Vacuum toilet unit |
| US20020158424A1 (en) * | 1999-10-21 | 2002-10-31 | Daikin Industries, Ltd. | Seal ring |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3170941A1 (en) * | 2015-11-20 | 2017-05-24 | LW-Group | System for cleaning a septic tank of a vehicle and a method performing the same |
| WO2022106135A1 (en) * | 2020-11-19 | 2022-05-27 | Trainvac GmbH | Vacuum toilet |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2366504B1 (en) | 2012-09-07 |
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