EP3556952B1 - Supply and disposal unit for vehicles with sanitary device - Google Patents

Description

The invention relates to a supply and disposal station for vehicles with a sanitary facility and a method for producing such a supply station for vehicles and a method for operating such a supply station.

Supply and disposal stations are required wherever vehicles equipped with sanitary facilities, such as coaches, rail vehicles, mobile homes or trucks, are serviced in order to remove wastewater from the sanitary facility and to fill the sanitary facility with fresh water, usually drinking water.

It is known to provide stationary supply and disposal stations for this purpose. Such stationary supply and disposal stations have a receiving device for removing the waste water from the vehicle, which is designed, for example, as a collecting pan or suction hose. The extracted wastewater is fed through the suction hose or a suction line to the supply and disposal station and from there into an underground sewage pipe and fed via this to a public or private sewage disposal and treatment network. The fresh water is supplied to the supply and disposal station in a frost-proof manner via a fresh water underground pipe laid at a sufficient depth, from there supplied to the vehicle via a fresh water supply hose, which is often kept ready as a reeled hose and consequently depending on the location of the fresh water supply supply connection of the vehicle to the supply and disposal station can be pulled out and connected or inserted into a filler neck.

The supply and disposal of vehicles must, on the one hand, be reliably feasible both at high and low outside temperatures without inadvertently losing wastewater or fresh water into the surrounding soil. On the other hand, for the lowest possible downtime, it is necessary to be able to carry out the supply and disposal quickly. In particular, when supplying and disposing of rail-bound vehicles, but also when supplying and disposing of coaches in places with a high volume of traffic, it is therefore necessary to be able to carry out a simultaneous supply and disposal of several vehicles.

It is known to provide mobile supply and disposal stations that are movable and can therefore be used in a spatially flexible manner. However, the storage capacity for fresh water and wastewater is limited and also at risk of frost when outside temperatures are low.

In order to avoid these problems, it is known to have several stationary supply and disposal stations available at locations which are objectionable to one another and which can be operated simultaneously. In principle, this can guarantee the rapid supply and disposal of several vehicles at the same time. For safe supply and disposal, especially at cold temperatures, it is necessary in this case, however, to pour a foundation for the supply and disposal station in order to lay the fresh water and sewer pipes therein. Due to a sewage discharge usually designed as a gravity drain, the connection point of the sewer underground pipe must be set individually from station to station, which makes it necessary to plan each foundation of a supply and disposal station and to create the foundation accordingly. This makes the installation costly.

DE 20 2014 003 479 U1 discloses a water filling device for drinking water tanks in vehicles, comprising an underfloor shaft, a hose reel for receiving a hose which is in fluid connection at a first end with the water supply connection and at a second end has a water outlet opening, the hose reel being rotatably mounted on a reel frame, wherein the reel frame is guided in such a way that it can be moved from an operating position to a maintenance position.

U.S. 4,332,681 A discloses a connection station between a drinking water network and a mobile sanitary unit. This station also provides a link between the mobile sanitary unit and a sewage system. The station comprises a main part that is buried in the ground and is flush with the surface of the ground. Another part protrudes from the ground. The station has quick-release couplings for connection to the sanitary unit. A sewage system is provided in the lower part of the station and a drinking water pipe in the upper part.

DE 20 2006 012 003 U1 discloses a supply and disposal unit for camping facilities, and the like, consisting of a substructure that is fastened in the ground and a structure that contains the connections for the supply of various media and the disposal of service water, the substructure and structure not being separated from one another must be carried out, but can also be carried out in one part. In combination, the unit is light, stable, easily adaptable, largely pre-assembled and easily accessible; enables a simple, inexpensive and frost-proof supply and shut-off of fresh water and provides a large number of connections for, for example, fresh water, industrial water, energy, telecommunications and / or data.

DE 100 18 711 A1 discloses a supply and disposal unit for camping facilities, with a columnar body on which a supply device for energy and / or fresh water and a disposal device for gray water are provided. The supply and disposal unit is characterized in that faeces can also be disposed of, the supply device and the disposal device being guided into the columnar body from a floor shaft, and an insulation cover being arranged in the floor shaft, which is closer to the surface of the ground than a Main valve of the supply device and a siphon of the disposal device.

Against this background, it is the object of the present invention to provide a supply and disposal station which enables the simultaneous and at the same time safe supply and disposal of vehicles in an economically more efficient manner.

This object is achieved according to the invention by a method for producing a supply and disposal station of the type mentioned at the beginning, which is developed by the steps: production of a foundation base with a sewer line leading into the foundation base, a fresh water line leading out of the foundation base, a connection interface which has a Connection for the in the Has a sewer pipe leading into the foundation base and a connection for the fresh water pipe leading out of the base base, a sewage earth pipe leading out of the foundation base with a sewage earth pipe connection located outside the foundation base, a fresh water earth pipe leading into the foundation base with a fresh water earth pipe connection located outside the foundation base, insertion of the established foundation base into an earth recess , Connecting a fresh water earth pipe opening into the earth recess to the fresh water earth pipe connection, and connecting a sewage earth pipe emptying into the earth recess to the sewage earth pipe connection, the sewage pipe leading into the foundation base being connected via a shut-off valve to the sewage earth pipe leading out of the foundation base, the sewage pipe leading out of the foundation base Sewer underground pipe connected to a vacuum pipe is ossen, and the sewer line leading into the foundation plinth opens into an intermediate storage tank which is arranged in the foundation plinth and is designed as a buffer storage to receive wastewater over a certain period of time or up to a certain filling volume, which then at a later point in time The suction process to be carried out to a limited extent can be discharged via the vacuum-operated underground sewer line from the intermediate storage tank of the foundation base, and the connection between the sewage line leading into the foundation base and the sewage earth line leading out of the foundation base is made via a switchable two-way valve, which is switched in particular depending on a fill level in the intermediate storage tank.

According to the invention, a foundation base is prefabricated and this prefabricated foundation base is inserted into a corresponding earth pit. The necessary connections for a sewage underground pipe and a fresh water underground pipe are available on the foundation base. The foundation base can furthermore have corresponding connections for fresh water and waste water of an above-ground component of a supply and disposal station to be built thereon, or it can be designed integrally with such a component as a supply and disposal station. In the latter case, the foundation base and the above-ground component form a compact unit that is inserted into a prepared earth pit and anchored in it and then protrudes beyond this earth pit.

The fresh water earth pipe leading into the foundation base and the sewage earth pipe leading out of the foundation base are preferably arranged on a side wall of the foundation base. In addition, a service water pipeline leading into the foundation plinth can also be provided, which can also be arranged on the side wall.

With the method according to the invention, on the one hand, the prefabrication of the foundation is made possible, which on the one hand avoids individual planning and drying times by producing the foundation as a prefabricated component, for example as a precast concrete part or steel construction element or from a mix of materials, and transporting it to the installation site as a prefabricated component can. The manufacture of the foundation can thus be carried out more economically on the one hand and the manufacturing time is also shortened, since no more on-site manufacture is required and drying times do not delay construction on-site either.

In principle, it is possible to provide connections for the sewer underground pipe at different heights on the prefabricated foundation base in order to create several identical prefabricated ones To be able to connect foundation plinths with each other in such a way that drainage by means of a gradient is made possible for the waste water from station to station. It is also possible to prefabricate foundation plinths in different designs, which differ according to the height of the connection point for the sewer underground pipe, in order to create a slope for the sewage. According to the invention, the sewer underground pipe is to be designed as a line subject to negative pressure in order to discharge the waste water in a vacuum-operated manner, whereby a more flexible design is possible for the laying of the sewer underground pipe, since a constant gradient no longer has to be provided as with a gravity pipe. In many applications, a sewer line subjected to negative pressure is provided and laid in the ground, for example in order to suck the sewage out of the vehicle by means of this negative pressure line. In addition to this vacuum-operated sewer pipe, a downhill sewer pipe is often also provided in order to be able to collect and discharge sewage occurring in the area of the supply and disposal station in a gravity pipe, for example with an open collecting basin, but the prefabricated foundation base provided according to the invention opens up the basic possibility of discharging all wastewater occurring at the supply and disposal station via the vacuum-operated wastewater pipe. As a result, all of the wastewater accumulating in the foundation plinth can be discharged via the negative pressure sewer underground pipeline and there is no need to lay a gravity pipeline.

Basically, a connection in the sense of the invention is to be understood as meaning that this can be a detachable or non-detachable connection, for example a connection for a pipe screw connection, a connection for a compression by means of a corresponding sleeve, a connection for a bayonet coupling, a connection for a pipe by means of soldering or welding or gluing.

The method according to the invention provides a connection between the sewer pipe leading into the foundation base (typically a gravity line) and the sewage earth pipe leading out of the foundation base (typically a vacuum pipe) which can be shut off by means of a shut-off valve. This makes it possible to implement a gravity-operated drainage of wastewater from a sewer pipe leading into the foundation plinth, for example from a collecting basin, a gravity pipe or a wastewater suction pipe subjected to negative pressure or the like, and to discharge this wastewater from the foundation plinth by means of negative pressure via the sewer underground pipe. About a permanent loss of negative pressure or a permanent air supply into the negative pressure-pressurized sewer underground pipe To prevent this, a shut-off valve must be provided, which prevents a permanent connection between the negative-pressure sewer underground pipe and an opening to the environment. This shut-off valve can always be opened for the purpose when the wastewater is to be discharged via the negative-pressure sewer earth pipe, whereby this actuation of the shut-off valve can take place automatically, for example triggered by a level sensor, or can be done manually by a user when he is suctioning off would like to.

In the method according to the invention, a waste water tank is provided in the foundation pedestal, in which wastewater that is supplied via the sewage line leading into the foundation pedestal can be temporarily stored. The waste water container can be provided, for example, by a pipe section with an enlarged pipe cross-section, which in this way can have a sufficient receiving volume for temporary storage. This wastewater tank serves as a buffer storage and takes in wastewater over a certain period of time or up to a certain filling volume, which can then be discharged from the intermediate storage tank of the foundation plinth via a vacuum-operated sewer underground pipe at a later point in time in a suction process to be carried out for a limited period of time. This construction makes it possible in a particularly favorable form to combine the prefabrication of the foundation plinth with additional functionality by providing a corresponding intermediate storage tank during prefabrication and thereby completely avoiding the need for gravity-operated drainage of the wastewater via the foundation plinth. The intermediate storage tank in the foundation base enables the sewage to be extracted from the foundation base at intervals by briefly applying negative pressure, so that permanent maintenance of negative pressure or permanent negative pressure loss can be avoided.

The method according to the invention can be further developed through the following steps: attaching an operating station to the foundation base and connecting a fresh water line arranged within the operating station to the connection for the fresh water line leading out of the foundation base and connecting a waste water line arranged within the operating station to the connection for the Sewer pipe leading into the foundation base. According to this embodiment, the supply and disposal station is implemented in the form of a foundation base and an operating station attached to it. In this respect, the foundation base can first be used in the ground and fastened therein in order to be able to perform the load-bearing function and the operating station can then be on or be attached to the foundation base. In the course of this fastening, it is also necessary to establish the necessary connections, in particular the fresh water pipe and the sewage pipe, which can optionally be designed as a vacuum sewer pipe, or a vacuum sewer pipe provided in addition to a gravity pipe, i.e. a gravity-operated sewer pipe. For this purpose, the foundation base has corresponding connections ready, which, like the connections for the respective underground lines, can in turn be designed as detachable or non-detachable pipe connections. In principle, these connections can be kept ready in a defined connection field, a connection interface, which is arranged, for example, on the top of the foundation base. However, the connections can also be provided at different locations and in different orientations, for example also on one side of the foundation plinth. This can be advantageous in certain arrangements and local restrictions.

It is even further preferred if the method is developed in that the sewer connection is connected to a negative pressure sewer line. Connecting the wastewater connection to a negative pressure sewer pipe enables the wastewater to be discharged by means of negative pressure and therefore avoids the need to divert the wastewater by gravity and to provide a corresponding gradient, possibly additional lifting systems or the like for this purpose. For this purpose, the negative pressure sewer line must be designed and approved to conduct a negative pressure. The negative pressure can be provided by a central negative pressure source, for example a vacuum pump, with which several supply and disposal stations are subjected to negative pressure in order to suck off their waste water.

According to a further preferred embodiment, the method is developed through the following steps: connecting the fresh water line leading out of the foundation base to a first connection of a drainage valve, connecting a second connection of the drainage valve to a fresh water discharge opening, connecting a third connection of the drainage valve to the sewage line leading into the foundation base , wherein the drainage valve is designed to switch between a first valve switching position in which the first and the second connection are connected to each other and the third connection is blocked, and a second valve switching position in which the second and the third connection are connected to each other and the first Connection is blocked, can be switched back and forth. According to this embodiment, the foundation pedestal is manufactured in such a way that the part of the fresh water line that is at risk of frost is emptied out of the foundation pedestal leads out, is made possible. This is usually advantageous if, for the purpose of frost protection, this fresh water line should not remain with the water standing in it after use, but should instead be emptied, ie ventilated. The residual water from the fresh water pipe, which can in particular include the portion of the pipe downstream of the drainage valve, but possibly also a portion of the pipe that is not in the frost-proof ground area and may include the portion of the pipe above ground including any fresh water hose provided, is diverted by means of a corresponding valve device. This discharge takes place in the sewage pipe and leads into the foundation base. The corresponding valve device can, for example, be designed as a 3/2-way valve, but can also be implemented by two separate 2/2-way valves or by other valve constellations. In particular, a protective device (system separator) can also be interposed here, which is required between waste water and drinking water in many countries and must, for example, correspond to Category 5 according to DIN EN 1717.

A further aspect of the invention is a method for operating a stationary supply station for vehicles, with the features in independent claim 5. This method has the following steps: discharge, in particular suction of waste water from a vehicle waste water tank, discharge of waste water via a into a foundation base Wastewater pipeline, temporary storage of water quantities from return water, rinsing water or dripping quantities within the foundation plinth, diverting the wastewater and the temporarily stored water quantity via an underground sewage pipe leading out of the foundation plinth. According to this aspect of the invention, a specific mode of operation of a supply and disposal station for vehicles with sanitary facilities is provided, which is offered because an intermediate storage tank is provided in an economically efficient manner in a prefabricated foundation base and this opens up water quantities from, for example, return water from the Filling hoses To temporarily store hygiene flushes and / or drips in the area of the supply and disposal station and consequently to discharge them at intervals via the sewer underground pipe. According to the invention, it is provided here that the temporarily stored water is not diverted away from the supply and disposal station by means of gravity, but is sucked off by applying a negative pressure. For this purpose, the water or wastewater is temporarily stored in the intermediate storage tank in the foundation base and at a certain level, which is detected by a level sensor, a suction process is triggered via a negative pressure. As a result of this negative pressure, the wastewater from the intermediate storage tank is carried away from the supply and disposal station via the sewer underground pipe. The invention can be designed, for example, in such a way that wastewater fed into the foundation plinth via a gravity line or return water occurring in the course of drainage is temporarily stored in the intermediate storage tank, whereas wastewater introduced into the foundation plinth via a negative pressure sewer pipe is not temporarily stored, but is directly discharged via a negative pressure underground sewer pipe is discharged from the foundation base. In such a suction process via the underpressure underground sewer line, sewage temporarily stored in the intermediate storage tank or other water such as return water can then also be sucked off and discharged from the foundation base via the sewer underground line. Basically, this suction process can be easily triggered by a single fill level sensor, which defines and records the maximum permissible level in the intermediate storage tank, in order to then carry out suction controlled, for example, according to the lapse of time. However, advanced suction control solutions can also be provided, for example an additional lower level sensor, which detects a low level in the intermediate storage tank and is used to end the suction process in order to prevent suction that is too long with subsequent air suction or too short suction with consequent inadequate emptying of the intermediate storage tank.

The method according to this aspect can be further developed with the following steps: supplying fresh water into the foundation base via a fresh water underground pipe, supplying the fresh water from the foundation base via a fresh water pipe to the vehicle, draining fresh water remaining in the fresh water pipe from the fresh water pipe into the intermediate storage tank Foundation base after completion of the supply of fresh water to the vehicle. According to this embodiment, residual emptying of the fresh water, which remains in the fresh water line in the frost-prone area after filling, is carried out into the intermediate storage tank, whereby the fresh water line in the frost-prone area is independent emptied, i.e. ventilated and there is then no water in it when the supply and disposal station is not in operation. This fresh water is also collected in the intermediate storage tank and can therefore be diverted away from the supply and disposal station by negative pressure via the sewer underground pipe.

The connection of the fresh water line to the intermediate storage tank can take place via a corresponding valve device in order to interrupt the supply of fresh water from the fresh water earth line to the fresh water line when the remaining emptying of the fresh water line into the intermediate storage tank takes place. As explained above, this can in turn be implemented by a 3/2-way valve or by two separate 2/2-way valves. Other embodiments are also possible, for example, by using a 3/3-way valve, a flushing function of the intermediate storage tank can be implemented via the fresh water underground pipe in order to flush the intermediate storage tank in the foundation base with fresh water at regular intervals and thereby stir up deposits in it and then suck it off.

The operating method according to the invention is further developed with the following steps: gravity-operated supply of waste water into the foundation base, intermediate storage of the waste water in an intermediate storage tank in the foundation base, suction of the waste water from the intermediate storage tank in the foundation base via a suction line subjected to negative pressure, and discharge of the waste water extracted from the intermediate storage tank via an underground sewer pipe subjected to negative pressure. According to the operating method, the waste water is fed into the intermediate storage tank in the foundation pedestal by gravity, whereby the collection of waste water by means of a tub or the absorption of residual amounts by means of a collecting basin at the supply and disposal station can be implemented in a simple manner. This gravity-operated wastewater supplied is temporarily stored in an intermediate storage tank within the foundation base and then discharged from the intermediate storage tank at regular time intervals or irregularly via an underground sewer line subjected to negative pressure. In this context, wastewater is also to be understood as meaning any residual amounts of water.

Another aspect of the invention is a stationary supply station for vehicles, comprising: a foundation base with a sewer line leading into the foundation base, a fresh water line leading out of the foundation base, a connection interface which has a connection for the sewage pipe leading into the foundation base and a connection for the fresh water pipe leading out of the foundation base, a sewage earth pipe leading out of the foundation base with a sewage earth pipe connection located outside the foundation base, a fresh water pipe leading into the foundation base with an outside of the foundation base fresh water pipe connection.

The supply station according to the invention for vehicles is designed to carry out supply processes with fresh water for the vehicle and / or disposal processes for waste water from the vehicle and consequently to completely supply and dispose of a sanitary facility installed on board the vehicle. The stationary supply station is characterized by a foundation base which has a connection interface for a sewage underground pipe leading into the foundation base and a fresh water pipe leading out of the foundation base. For this purpose, there are two separate connections on the foundation base, which can be designed as detachable or non-detachable connections, for example as a flange connection in the manner of a screw connection, bayonet connection, as a crimp connection as a soldered or welded soldered connection flange or welded connection flange and the like.

Deviating from previously known solutions, in which an existing sewer underground pipe and fresh water underground pipe is guided in a corresponding foundation base on site and poured into it, in the present invention the foundation base is therefore a prefabricated foundation base and can consequently be made in advance of concrete or steel, for example, before it is in the ground is used at the installation site. The foundation base can in particular be a transportable component and accordingly have a weight of less than 2.5 tons, in particular less than 1 tons, for example between 200 kg and 500 kg, in order to be transportable and usable on site accordingly. The foundation base also has connections for a fresh water pipe leading out of the foundation base and a sewage pipe leading into the foundation base; a corresponding above-ground part of the supply and disposal station can be connected to these connections in order to drain waste water that is sucked out of a vehicle via this introduce the above-ground part into the foundation base in order to supply fresh water to be filled into the vehicle from the foundation base into this above-ground part and from there into the vehicle. These connections can also be designed in the same way as detachable or non-detachable connections as described above.

The supply station is developed by an intermediate storage tank arranged in an interior space of the foundation base. By providing an intermediate storage tank in the foundation base, the prefabrication is combined in a favorable manner with additional functionality and simplification of the installation of a supply station. For this purpose, reference is made to the above statements regarding the intermediate storage of wastewater or residual water in the foundation base, the discharge of the wastewater or residual water made possible by means of a negative-pressure sewer underground pipe and the waiver of gravity-operated discharge of the wastewater or residual water from the foundation base.

The supply station is further developed in such a way that the intermediate storage tank has a sensor device which detects a level within the intermediate storage tank and, when a predetermined level is reached in the intermediate storage tank, triggers a drainage of wastewater from the intermediate storage tank via the sewage underground pipe leading out of the foundation base. In this regard, too, reference is made to the level control of the waste water discharge from the intermediate storage tank, which has been described above.

The supply station is further developed in such a way that the sensor device is designed to interact with a switching device and the switching device is designed to control a valve which fluidly connects the intermediate storage tank with the sewer underground pipe leading out of the foundation base, the sewer underground pipe leading out of the foundation base and the valve is designed for a vacuum-operated suction of the waste water from the intermediate storage tank. In this way, a corresponding switching device, which is preferably designed as an electronic switching device, is available to initiate automatic drainage of the wastewater from the intermediate storage tank via the sewer earth pipe by means of a negative pressure and to prevent an undesired air flow into the sewer earth pipe with a corresponding loss of negative pressure effect therein . For this purpose, a corresponding shut-off valve is activated, which is only opened automatically when the suction process is carried out.

The supply station can be further developed by connecting the fresh water line leading out of the foundation plinth to a first connection of a drainage valve is connected, a second connection of the drainage valve is connected to a fresh water discharge opening, and a third connection of the drainage valve is connected via a drainage line to the sewage line leading into the foundation base, the drainage valve being designed to switch between a first valve switching position in which the first and second connection are connected to one another and the third connection is blocked, and a second valve switching position in which the second and third connections are connected to one another and the first connection is blocked and can be switched back and forth. According to this embodiment, the supply station is developed in such a way that a drainage valve is provided which can be arranged on the foundation base in order to be able to drain a fresh water line that runs in the frost-prone area and to feed this drained fresh water into the foundation base. The dewatered fresh water can be fed into a sewage line that runs in the foundation pedestal, or it can be temporarily stored in an intermediate storage tank in the foundation pedestal, as described above. The connection between the drainage pipe and the sewer pipe can be direct and, for example, be designed as a connection in the foundation plinth or outside the foundation plinth. The connection can also be indirect, for example in that the drainage line and the sewage line open into an intermediate storage tank, which thus establishes the connection indirectly. With regard to this equipment of the supply station with a drainage valve and a corresponding drainage line guide, reference is again made to the above description of the corresponding functionality and its preferred embodiments.

Finally, the supply station according to the invention can be further developed in that the sewage line leading into the foundation base is a sewage line subjected to negative pressure, the sewage earth pipe leading out of the foundation base is a negative-pressure earth pipe, and a second sewage line leading into the foundation base is provided, which is designed for a gravity-operated sewage system , and the sewer underground pipe leading out of the foundation base is connected to the second sewage pipe leading into the foundation base via a switchable shut-off valve for the suction of sewage which was fed to the foundation base via the second sewage pipe leading into the foundation base. According to this embodiment, on the one hand, the designed foundation base makes it possible to suck off the wastewater from a vehicle under negative pressure, that is to say to operate the supply and disposal station for underpressurized suction of wastewater from a vehicle. In addition to this vacuum suction of waste water, it is also possible to discharge waste water at the supply and disposal station using gravity. For this purpose, a corresponding gravity-operated sewer pipe is on Foundation plinth provided. The foundation base consequently has a total of at least three sewage connections, on the one hand a sewage earth pipe connection for a sewage earth pipe subjected to negative pressure, and on the other hand a sewage connection for a negative pressure sewer pipe which can be connected to the vehicle for the suction of wastewater. This underpressure-pressurized sewer line can be connected directly to the sewer underground line connection and can be blocked or released by means of a corresponding valve in order to control the suction process. Furthermore, a gravity-operated wastewater connection is provided, which enables the gravity-related supply of wastewater to the foundation base. The connection between this sewer pipe and the underground sewer pipe that can be subjected to negative pressure can be designed, for example, in such a way that the gravity-operated sewage connection opens into an intermediate storage tank within the foundation base and the waste water from this intermediate storage tank can be sucked out of the foundation base by means of the negative pressure earth pipe.

Fig. 1

eine perspektivische Ansicht eines Fundamentsockels einer Ver- und Entsorgungsstation,

Fig. 2

eine Seitenansicht des Fundamentsockels,

Fig. 3

eine frontale Stirnansicht des Fundamentsockels gemäß Fig. 1,

Fig. 4

eine rückseitige Stirnansicht des Fundamentsockels gemäß Fig. 1, und

Fig. 5

eine geschnittene Seitenansicht des Fundamentsockels mit aufgesetzter Bedieneinheit.

The invention is described with reference to the accompanying figures. Show it:

Fig. 1

a perspective view of a foundation base of a supply and disposal station,

Fig. 2

a side view of the foundation base,

Fig. 3

a front view of the foundation base according to Fig. 1 ,

Fig. 4

a rear end view of the foundation base according to Fig. 1 , and

Fig. 5

a sectional side view of the foundation base with the control unit attached.

Referring to the Figures 1-4 A foundation base comprises a body which is formed by side walls 10, a front end wall 11, a rear end wall 12 and an upper wall 13. In the exemplary embodiment, the foundation pedestal does not have a bottom wall, so it has an opening facing downwards towards the ground in which it is embedded. Penetrating rainwater can seep away as a result. In other embodiments, instead of the opening, a bottom wall 14 can be provided, which can be closed or designed with infiltration openings. The side walls 10 are reinforced by several ribs. In the exemplary embodiment, these ribs are designed as vertically extending ribs and horizontally extending ribs.

The side walls, the end walls and the upper wall can be made of steel or cast from a mineral material, for example from concrete. Depending on the requirements for the load-bearing capacity, it is also possible for the walls mentioned to be made of a polymer material.

Cable conduits 20a, b are introduced into the foundation base in the longitudinal direction at the end face. Cables can be passed through these conduits. The empty cable conduits have an opening inside the foundation socket or are two empty cable conduit sections inserted into the end faces, so that a cable that is introduced into the foundation socket at the end is led out inside the foundation socket and, for example, laid out upwards through corresponding empty cable conduits 20c, d from the foundation socket can be in order to thereby supply a device of the supply and disposal station fastened on the foundation base with energy and to enable corresponding signal and data communication.

A front return line 30 and a rear return line 31, which lead into the foundation base, are also provided on the upper side of the foundation base. These return lines are designed to be pressure-free and form a connection on the top, to which a corresponding drainage line of an upper component of the supply and disposal device can be connected. These return lines can be connected to collecting basins, for example, in order to drain away wastewater due to gravity and to be able to feed it into the foundation plinth, or they can be connected to valve devices in order to take up water in the case of drainage from the lines running at risk of frost or to take up rinse water that occurs during a flushing process of these lines .

The pressure-free return lines 30, 31 open within the foundation base into an intermediate storage tank 35a-d, which has a volume of about 50 liters. This intermediate storage tank is made, as in particular Figure 5 can be seen, formed by a horizontally extending pipe section 35a and three vertically extending pipe sections 35b-d opening into it with a large pipe cross-section. Depending on the application, the intermediate storage tank can also hold more than 100 liters, preferably more than 500 liters and in particular more than 1000 liters, in order to collect waste water, rinse water and from a To save drainage originating water temporarily. In particular, the intermediate store can also be designed as a tank container.

Furthermore, a vacuum sewer line 40 with a corresponding vacuum sewer line connection 41 is present in the upper side of the foundation plinth. A wastewater line subjected to negative pressure can be connected to this vacuum line connection, by means of which wastewater can be sucked out of a vehicle and can be introduced into the foundation plinth via the vacuum wastewater line. This vacuum sewer pipe 40 is directly connected within the foundation plinth to a connection 100 for a sewer underground pipe arranged in the front face. The connection 100 for the sewer underground line is designed as a flange connection, for example for a pipe connection by means of an electric welding socket or as a flexible pipe coupling and enables the connection of a vacuum-loaded sewer underground line in the frost-free area when the foundation plinth is inserted into the ground.

The vacuum sewer line 40 is connected in the flow direction behind the vacuum line connection 41 to a suction line 42 via a 2/2-way valve 43. This suction line 42 is connected to the intermediate storage tank inside the foundation base. In the exemplary embodiment, this connection is implemented by introducing the suction line 42 into a sewer line on the top. In particular, the suction line 42 can be designed as a suction hose. Via this connection, water that is temporarily stored in the intermediate storage tank in the foundation plinth can be sucked off by opening the 2/2-way valve 43 when carrying out a suction process under negative pressure and discharged from the foundation plinth via the underpressure sewer earth pipe.

Furthermore, a fresh water line 50 leading out of the foundation plinth is provided on the upper side of the foundation plinth and has a fresh water line connection 51. An above-ground component of the supply and disposal station can be connected via this fresh water line in such a way that a fresh water line or a fresh water hose there is supplied with fresh water and enables a vehicle to be supplied.

In the flow direction upstream of the fresh water connection 51, a pressure-free fresh water return line 52 is connected to the fresh water line 50. This connection is implemented via a 3/2-way valve 53. In a first position, the 3/2-way valve can supply fresh water from the foundation base to the fresh water connection 51 and thereby enable the supply of a vehicle. In a second position, the 3/2-way valve can divert fresh water from the fresh water connection 51 into the fresh water return line 52 and thereby blocks the inflow of fresh water from the foundation base. In this position, the above-ground fresh water line can be drained and thereby made frost-proof. The 3/2-way valve can optionally provide a third position in which fresh water is fed from the fresh water inflow of the foundation base into the fresh water return line and the inflow to the fresh water connection 51 is blocked. This position can be used as a flush position.

The fresh water return line 52 opens into a return line 56 on the top of the foundation base. The return line 56, like the sewage line connections 30, 31, can be designed and open into the intermediate storage tank arranged in the interior of the foundation base. As a result, the fresh water that has to be drained away during drainage is temporarily stored in the intermediate storage tank and can be discharged from this intermediate storage tank at regular time intervals or depending on the water level via the underground sewage pipe under negative pressure.

A sensor 55 is provided for this, which is arranged symbolically in the figure and detects the level in the intermediate storage tank. When a high level is detected, this sensor 55 triggers a sensor signal with which suction of the waste water from the intermediate storage tank is controlled.

In the front end wall 11, in addition to the negative-pressure sewer earth line connection 100, a fresh water earth line connection 110 is arranged, which comes to lie at the lowest point of the foundation plinth in the frost-proof soil when the foundation plinth is inserted into the ground. This fresh water earth line connection 110 is also designed as a releasable or non-releasable pipe connection or pipe flange, as described above. Fresh water is fed into the foundation base via this fresh water earth pipe connection 110 in order to be able to lead it out of the foundation base via the fresh water pipe 50.

The fresh water earth line connection 110 can be routed further to the rear face side via a T-junction in order to connect to it an opposite fresh water earth line with which a further spaced foundation base is supplied with fresh water. Finally, there are two empty pipes 20c on the top, 20d are used, which are connected to the conduits 20a, 20b and allow power, signal or data cables to be led out or in from the top of the foundation base.

According to the invention, a foundation base, such as the foundation base described above, can be produced in advance and at a distance from the installation site and then transported to the installation site. The prefabricated foundation base is then inserted into the ground and connected to the ground lines and the upward lines of the above-ground components of the supply and disposal station by means of the connections provided on it. The above-ground component of the supply and disposal station is at the same time attached to the foundation plinth and thus set up in a stable manner.

The foundation base with the intermediate storage tank located therein can in particular be operated in such a way that, on the one hand, gravity-fed wastewater is temporarily stored in the foundation base in an intermediate storage tank and, on the other hand, fresh water that is discharged from the fresh water pipe after a filling process through a drainage of the fresh water pipe in order to create frost protection, is also discharged in this intermediate storage tank. This discharge is also operated by gravity. In the intermediate storage tank, the level is then monitored by a sensor device, so that when a maximum level is reached, a suction process can be triggered via a vacuum sewer pipe. This vacuum-acted sewer line can be the underpressure-acted sewage underground line, with which sewage is sucked out of a vehicle by means of underpressure also through the foundation plinth.

the end Figure 5 the basic structure of a supply station according to the invention can be seen. A top-side operating unit O is mounted on the foundation console E, which is sunk into the ground and carried by this foundation console E. The installation of the operating unit O on the foundation head E is typically detachable by means of a screw connection with several screws. The foundation console E and the operating unit O are delimited from one another along a terrain line T, which characterizes the terrain surface.

The intermediate store formed by the pipe sections 35a-d is arranged within the foundation bracket E. The vertically upwardly pointing pipe sections 35b-d are aligned with the sewer line connections 30, 31 and the return line 56 and are in fluid communication with them.

Data and power lines, which supply a control unit S in the above-ground operating unit, are routed via the empty pipes 20a, b.

Claims (11)

1. A method for producing a stationary supply station for vehicles, having the steps:

   - producing a foundation base having

   ∘ a wastewater line (40) running into the foundation base,

   ∘ a freshwater line (50) running out of the foundation base,

   ∘ a connection interface comprising a connection (41) for the wastewater line (40) running into the foundation base and a connection (51) for the freshwater line (50) running out of the foundation base,

   ∘ a wastewater ground line running out of the foundation base and having a wastewater ground line connection (100) outside of the foundation base,

   ∘ a freshwater ground line running into the foundation base and having a freshwater ground line connection (110) outside of the foundation base,

   - placing the produced foundation base in a hole in the ground,

   - connecting a freshwater ground line opening into the hole in the ground to the freshwater ground line connection (110), and

   - connecting a wastewater ground line opening into the hole in the ground to the wastewater ground line connection (100), wherein

   - the wastewater line (40) running into the foundation base is connected by means of a shut-off valve to the wastewater ground line running out of the foundation base, wherein the wastewater ground line running out of the foundation base is connected to a vacuum line, and

   - the wastewater line (40) running into the foundation base opens into an intermediate storage tank (35a, 35b, 35c, 35d) disposed in the foundation base and implemented as a buffer storage for receiving wastewater over a particular period of time or up to a particular fill volume, said wastewater then being able to be discharged from the intermediate storage tank (35a, 35b, 35c, 35d) of the foundation base at a subsequent point in time in a time-limited suctioning process via the vacuum-actuated wastewater ground line, and the connection between the wastewater line (40) running into the foundation base to the wastewater ground line running out of the foundation base takes place by means of a switchable two-way valve (43) switched particularly as a function of a fill level in the intermediate storage tank (35a, 35b, 35c, 35d).
2. The method according to claim 1, characterized by the further steps:

   - attaching an operator station to the foundation base,

   - connecting a freshwater line disposed within the operator station to the connection (51) for the freshwater line (50) running out of the foundation base, and

   - connecting a wastewater line disposed within the operator station to the connection (41) for the wastewater line (40) running into the foundation base.
3. The method according to claim 1 or 2, characterized by the step:

   - connecting the wastewater ground connection to a vacuum wastewater line.
4. The method according to any one of the preceding claims, characterized by the steps:

   - connecting the freshwater line (50) running out of the foundation base to a first connection of a drain valve (53),

   - connecting a second connection of the drain valve (53) to a freshwater dispensing opening,

   - connecting a third connection of the drain valve (53) to the wastewater line (40) running into the foundation base,

   - wherein the drain valve (53) is implemented for switching back and forth between a first valve switch setting in which the first and the second connection are connected to each other and the third connection is blocked, and a second valve switch setting in which the second and third connection are connected to each other and the first connection is blocked.
5. A method for operating a stationary supply station for vehicles, having the steps:

   - removing, particularly suctioning, wastewater out of a vehicle wastewater tank,

   - draining off the wastewater via a wastewater line (40) running into a foundation base,

   - discharging the wastewater via a wastewater ground line running out of the foundation base,

   wherein

   - the wastewater and/or the quantity of water formed by the return water, flushing water, or spillage is intermediately stored within the foundation base in an intermediate storage tank (35a, 35b, 35c, 35d),

   - the wastewater and the quantity of water from the intermediate storage tank (35a, 35b, 35c, 35d) are discharged via the wastewater ground line as a function of a level of the wastewater and the quantity of water in the intermediate storage tank (35a, 35b, 35c, 35d), and

   - the wastewater and the quantity of water are discharged via the wastewater ground line by means of a vacuum present in the wastewater ground line,

   - wherein the wastewater is fed into the foundation base by means of gravity feeding,

   - the wastewater is suctioned out of the intermediate storage tank (35a, 35b, 35c, 35d) in the foundation base via a suction line under vacuum, and

   - the wastewater suctioned out of the intermediate storage tank is discharged via the wastewater ground line under vacuum.
6. The method according to claim 5, having the steps:

   - feeding fresh water into the foundation base via a freshwater ground line,

   - feeding the fresh water from the foundation base to the vehicle via a freshwater line (50),

   - draining off fresh water remaining in the freshwater line (50) out of the freshwater line into the intermediate storage tank (35a, 35b, 35c, 35d) in the foundation base after completing the feeding of the fresh water to the vehicle.
7. The method according to any one of the claims 5 or 6, having the steps:

   - flushing the freshwater line (50) by means of fresh water from the freshwater ground line as flushing water,

   - draining off the flushing water from the freshwater line (50) into the intermediate storage tank (35a, 35b, 35c, 35d),

   - suctioning the flushing water out of the intermediate storage tank (35a, 35b, 35c, 35d) in the foundation base via a suction line under vacuum, and

   - discharging the flushing water suctioned out of the intermediate storage tank (35a, 35b, 35c, 35d) via a wastewater ground line under vacuum,

   - wherein the flushing of the freshwater line (50) is performed as a time-limited flushing process and is preferably initiated when a predetermined time interval has passed since the last filling of freshwater by means of the freshwater line or since the last flushing process of the freshwater line (50).
8. The method according to any one of the claims 5 through 7,
   characterized in that the suctioning of the flushing water out of the intermediate storage tank (35a, 35b, 35c, 35d)

   - is initiated by a fill level sensor on the intermediate storage tank (35a, 35b, 35c, 35d), or

   - is initiated every time the freshwater line (50) is flushed.
9. A stationary supply station for vehicles, comprising:

   - a foundation base having

   ∘ a wastewater line (40) running into the foundation base,

   ∘ a freshwater line (50) running out of the foundation base,

   ∘ a connection interface comprising a connection for the wastewater line (40) running into the foundation base and a connection for the freshwater line (50) running out of the foundation base,

   ∘ a wastewater line running out of the foundation base and having a wastewater connection outside of the foundation base,

   ∘ a freshwater line running into the foundation base and having a freshwater connection outside of the foundation base,

   the supply station further comprising:
   an intermediate storage tank (35a, 35b, 35c, 35d) disposed in an interior space of the foundation base, wherein the intermediate storage tank (35a, 35b, 35c, 35d) comprises a sensor device for capturing a level within the intermediate storage tank (35a, 35b, 35c, 35d) and for initiating discharging of wastewater out of the intermediate storage tank (35a, 35b, 35c, 35d) via the wastewater line running out of the foundation base when a predetermined level is reached in the intermediate storage tank (35a, 35b, 35c, 35d), and the sensor device is implemented for interacting with a switch device and the switch device is implemented for actuating a valve setting a fluid connection between the intermediate storage tank (35a, 35b, 35c, 35d) and the wastewater line running out of the foundation base, wherein the wastewater line running out of the foundation base and the valve are implemented for vacuum-actuated suctioning of the wastewater out of the intermediate storage tank (35a, 35b, 35c, 35d).
10. The supply station according to claim 9,
    characterized in that

    - the freshwater line (50) running out of the foundation base is connected to a first connection of a drain valve (53),

    - a second connection of the drain valve (53) is connected to a freshwater dispensing opening, and

    - a third connection of the drain valve (53) is connected to the wastewater line (40) running into the foundation base via a freshwater return line (52) via a drain line,

    wherein the drain valve (53) is implemented for switching back and forth between a first valve switch setting in which the first and the second connection are connected to each other and the third connection is blocked, and a second valve switch setting in which the second and third connection are connected to each other and the first connection is blocked.
11. The supply station according to any one of the preceding claims 9 through 10,
    characterized in that

    - the wastewater line (40) running into the foundation base is a wastewater line under vacuum,

    - the wastewater line running out of the foundation base is a wastewater line under vacuum,

    - a second wastewater line (30, 31) running into the foundation base is provided and implemented for feeding wastewater under gravity feeding, and

    - the wastewater line running out of the foundation base is connected to the second wastewater line (30, 31) running into the foundation base by means of a switchable shut-off valve for suctioning wastewater fed into the foundation base via the second wastewater line (30, 31) running into the foundation base.

Images