AT527034B1 - Discharge tank, system and method for surface drainage - Google Patents

Abstract

Outlet container for surface drainage of an area, in particular a street, a parking area, a square or a sidewalk, with a receiving space (10) for receiving the water and at least one drain opening (11), wherein the outlet container comprises an overflow pipe (12) through which the water can be separated into fractions, in particular a first and a second fraction, wherein the overflow pipe (12) projects into the interior of the receiving space (10) and the upper edge of the overflow pipe (12) is arranged higher than the lower end of the drain opening (11), so that the second fraction can be drained through the overflow pipe (12) into the subsoil and the first fraction can be drained through the drain opening (11) to a surface, in particular into a bed, in particular a planted deep bed and/or a soil filter, in particular a green hollow.

Description

Description

[0001] The invention relates to an outlet container for surface drainage of an area, in particular a street, a parking area, a square or a sidewalk, with a receiving space for receiving the water and at least one drain opening, wherein the outlet container comprises an overflow pipe through which the water can be separated into fractions, in particular a first and a second fraction. A device according to the preamble of patent claim 1 is known, for example, from EP 1 741 845 A2.

[0002] The drainage of rainwater in the street area is associated with several problems. It is known that rainwater washes pollutants off surfaces, with the first flush being more polluted than the following water volumes. If the rainwater is highly polluted, the water is often subjected to pre-treatment before it is drained directly into the ground. It is therefore sensible to separate the first, more polluted flush.

[0003] From the aforementioned EP 1 741 845 A?2 a method for drainage is known, whereby the rainwater is separated into a first partial flow and a second partial flow following at a later time. However, it is disadvantageous that this drainage method comprises a complex pipe system.

[0004] US 2005/0042030 A1 discloses a drainage and irrigation approach consisting of two phases, an initial phase for green belt irrigation and a later phase for rainwater drainage. The disadvantage is that after the initial phase, the water must accumulate directly at the green belt so that it can be drained through the drainage device in the later phase.

[0005] KR 101328223 B1 also shows a rainwater separation device in which an infiltration tank initially collects the water and, once a certain level is reached, a valve is closed, after which the remaining water can be drained away. However, it is disadvantageous that there is a complex principle for separating the rainwater, which requires a large number of structural components, such as throttles or valves.

[0006] The invention is based on the object of specifying an outlet container for separating rainwater into a first and a second fraction without a mechanical or electronic control. The invention is also based on the object of specifying a system and a method for separating rainwater into a first and a second fraction with such an outlet container.

[0007] According to the invention, this object is achieved by a discharge container having the features of claim 1. With regard to the system, this object is achieved by the subject matter of claim 8 and with regard to the method by the subject matter of claim 13.

[0008] Specifically, the object is achieved by an outlet container for surface drainage of an area, in particular a street, a parking area or a sidewalk, with a receiving space for receiving the water and at least one drain opening. The outlet container comprises an overflow pipe through which the water can be separated into fractions, in particular a first and a second fraction, wherein the overflow pipe protrudes into the interior of the receiving space and the upper edge of the overflow pipe is arranged higher than the lower end of the drain opening, so that the second fraction can be drained through the overflow pipe into the ground and the first fraction can be drained through the drain opening to a surface, in particular into a bed, in particular a planted deep bed and/or a soil filter, in particular a green hollow.

[0009] With regard to the method, the object is achieved by a method for surface drainage of an area, in particular a street, a parking area or a sidewalk, using an outlet container with a receiving space and at least one drainage opening. The water is collected in the receiving space of the outlet container. As the amount of water increases, the water level in the receiving space of the outlet container rises.

wherein the water is separated by the overflow pipe into fractions, in particular into a first and a second fraction. The first fraction is drained through the drain opening from the receiving space to the surface, in particular into a sunken bed and/or a soil filter, in particular a green trough. The second fraction is drained through the overflow pipe from the receiving space into the subsoil.

[0010] The invention has the advantage that the separation of the rainwater into a first and a second fraction takes place within a structural element without mechanical or electrical control. For this purpose, the outlet container comprises a receiving space for receiving the rainwater and at least one drain opening. To separate the water into fractions, in particular into a first and a second fraction, the outlet container has an overflow pipe that projects into the interior of the receiving space. The upper edge of the overflow pipe is arranged higher than the lower end of the drain opening. Due to this arrangement of the drain opening and the overflow pipe in relation to one another, the first fraction is drained through the drain opening, which is located lower relative to the upper edge of the overflow pipe, to the surface, in particular into a sunken bed and/or a soil filter, in particular a green hollow. In the case of large amounts of water, the second fraction is led directly into the ground through the overflow pipe as the water level in the receiving space rises. This self-regulating separation of rainwater, which is based on the natural time delay of the first and second water fractions, enables optimal use of rainwater to irrigate various plants.

[0011] Preferred embodiments of the invention are specified in the subclaims.

[0012] Preferably, the drain opening is arranged laterally on the receiving space and is designed in particular in the form of a slot which is arranged essentially perpendicular to the surface. This makes it possible to drain the first fraction directly to the surface, in particular into a sunken bed, by means of a simple structural design of the outlet container. The sunken bed can serve as a natural soil filter for cleaning the contaminated rainwater, whereby pure water can reach deeper soil layers by seepage.

[0013] Furthermore, the receiving space can advantageously have a plurality of drainage openings, in particular a plurality of slots, which are arranged distributed on the side of the receiving space. In this way, the entire width of the outlet container can be used effectively to drain the first fraction to the surface. The drainage openings can be arranged evenly distributed over one side of the receiving space.

[0014] In a preferred embodiment, the overflow pipe can have a porous and/or perforated and/or partially permeable cover for cleaning and/or filtering the second fraction. As a result, the second fraction can be cleaned of remaining dirt residues by a simple structural element before the second fraction is discharged into the ground. The cover can be arranged on the top of the overflow pipe and can be connected to it.

[0015] The overflow pipe preferably also has a first pipe socket for draining the second fraction into the ground. The pipe socket can protrude outwards from the underside of the receiving space above the receiving space in order to enable the receiving space to be easily connected to a drain pipe. This makes it possible to direct the second fraction, which is almost pure from a hydrological point of view, directly into the ground, where it can be stored according to the sponge city principle. There, the water can be directly available to the trees for deep irrigation thanks to the retention capacity of a sponge city body, without the water having to flow through an additional filter.

[0016] A sponge city is a structural device for the local collection and storage of rainwater, which is preferably used in cities. Instead of simply channeling and draining the water, it can be stored and thus promote the rooting of the soil.

[0017] Furthermore, the receiving space may comprise a second pipe socket, which

Introducing the water into the receiving space. The second pipe socket is advantageously arranged on the underside of the receiving space and protrudes outwards beyond the receiving space. This enables the receiving space to be easily connected to an inlet pipe, which can serve in particular as a connecting element to an inlet shaft.

[0018] In a further preferred embodiment, the receiving space is designed in the form of a chamber which is delimited by several walls and is open at the top. This allows a simple and compact structure of the receiving space to be achieved. The opening of the receiving space at the top ensures easy accessibility of the receiving space, for example in order to clean it. The opening of the receiving space at the top can preferably be closed by a cover, which can prevent the ingress of dirt from the environment. The cover is further preferably detachably connected to the receiving space in order to ensure accessibility to the interior of the receiving space.

[0019] According to a secondary aspect, the invention relates to a system for surface drainage with at least one outlet container according to the invention, wherein the outlet container can be connected or is connected to at least one inlet shaft. The inlet shaft can be arranged in the direction of flow of the water before or after the outlet container in order to enable pre-cleaning of the water. In this way, the natural soil filter of the deep bed is relieved, since the first water fraction that is drained to the surface undergoes pre-cleaning by the inlet shaft. The inlet shaft can also comprise a leaf catcher or a collecting basin for wet sludge and thus contributes to the sedimentation of settleable substances in the rainwater.

[0020] Preferably, the outlet container is arranged higher relative to the inlet shaft. In this way, the water can be transferred to the outlet container according to the principle of communicating vessels by rising the water level in the inlet shaft. By using this simple physical principle, floating contaminants, such as oils, can be retained by separating the water surfaces.

[0021] In a particularly preferred embodiment, the outlet container can be connected to an installation aid that enables the outlet container to be aligned with the inlet shaft. This makes it possible to position the outlet container and the inlet shaft relative to one another using a simple structural element. Furthermore, the susceptibility to errors during assembly, in particular when connecting the outlet container to the inlet shaft, is reduced.

[0022] The installation aid can be designed in different ways, which enables the outlet container to be connected to standard street inlet shafts. The installation aid can, for example, have several support elements and a vertical and/or a horizontal position sensor. The position of the inlet shaft relative to the outlet container can advantageously be determined by the vertical and horizontal position sensors, which specifies the correct position of the inlet shaft. The installation aid is designed in such a way that the connection of the pipe connections is not impaired.

[0023] The installation aid can further preferably have an annular position sensor which completely encloses the inlet shaft, in particular a cylindrical inlet shaft. This embodiment of the installation aid is characterized by a compact structure. Furthermore, the annular position sensor of the installation aid is connected to the outlet container in such a way that the height of the outlet container can be adjusted relative to the inlet shaft.

[0024] The invention is explained in more detail using embodiments in conjunction with the schematic drawings.

[0025] In these show

[0026] Fig. 1 perspective views of an embodiment of an outlet container for surface drainage according to the invention;

[0027] Fig. 2 is a section through a discharge container according to Fig. 1, showing the overflow pipe;

[0028] Fig. 3 is a perspective view of an embodiment of an outlet container according to the invention with an installation aid comprising a horizontal and a vertical position sensor;

[0029] Fig. 4 is a perspective view of a surface drainage system with an outlet tank and an inlet shaft;

[0030] Fig. 5 is a perspective view of an embodiment of an outlet container according to the invention with an installation aid comprising an annular position sensor;

[0031] Fig. 6 is a perspective view of a surface drainage system with an outlet tank and an inlet shaft.

[0032] Figure 1 shows an embodiment of an outlet container for surface drainage according to the invention. This involves the use of the outlet container for draining a street or a sidewalk. Other applications are conceivable, for example the drainage of parking areas. The device shown comprises a receiving space 10 for receiving the water and at least one drain opening 11 and an overflow pipe 12 for draining and/or separating the rainwater into fractions. For reasons of better clarity, the outlet container in Fig. 1 is shown without a surface to be drained.

[0033] The outlet container can be made of a dimensionally stable material, in particular of metal, in particular of stainless steel. Other materials are conceivable that can be used outdoors and have no negative effects on the water.

[0034] The receiving space 10 of the outlet container for receiving the water can be clearly seen in Fig. 1. The receiving space 10 can be designed in a cuboid shape as shown in Fig. 1. Other geometries of the receiving space 10 are conceivable.

[0035] Furthermore, Fig. 1 shows at least one drain opening 11 for draining the first water fraction to the surface, in particular into a sunken bed and/or a soil filter, in particular a green hollow. In use, the outlet container can be installed in a soil such that the drain opening 11 is arranged above the surface. Other arrangements of the drain opening 11 are conceivable.

[0036] The overflow pipe 12 for separating the water into fractions can be clearly seen in Fig. 2. It can be seen that the overflow pipe 12 protrudes into the interior of the receiving space 10, with the upper edge of the overflow pipe 12 being arranged higher in the axial direction than the lower end of the drain opening 11. The upper edge of the overflow pipe 12 can be arranged between the upper and lower ends of the drain opening 11. It is also conceivable that the upper edge of the overflow pipe 12 is arranged at the same height or higher than the upper end of the drain opening 11.

[0037] In Fig. 1 it can be clearly seen that the drain opening 11 is arranged laterally on the receiving space 10 and is designed in the form of a slot which is arranged essentially perpendicular to the surface. Other variants of drain openings 11 are conceivable. For example, the slots can be arranged horizontally or at an angle to the surface. Furthermore, the drain opening 11 can have other geometric shapes. For example, the drain opening 11 can be circular.

[0038] Fig. 1 further shows that the receiving space 10 can have a plurality of drainage openings 11, in particular a plurality of slots, which are distributed on the side of the receiving space 10 and spaced apart from one another. It can be seen that in particular ten drainage openings

openings 11 are arranged on the receiving space 10, which are evenly distributed over the side of the receiving space 10, wherein two adjacent drain openings 11 have a smaller distance from each other.

[0039] Furthermore, Fig. 2 shows that the overflow pipe 12 can be connected to a porous cover 13 on its top side. The second fraction of the water, which is drained into the ground through the overflow pipe 12, can be cleaned or filtered in this way. It can be seen that the porous cover 13 is designed in the form of an open cylinder, with the outer surface and a circular surface of the cylinder having narrow openings that serve to filter the second fraction. Other variants for filtering the second fraction, such as commercially available filter attachments, are conceivable. It is also possible to use the outlet container without such a cover 13 of the overflow pipe 12.

[0040] Figures 1 and 2 show that the overflow pipe 12 has a first pipe socket 14, which is arranged on the underside of the receiving space 10 and protrudes outwards beyond the receiving space 10. The first pipe socket 14 shown forms an opening on the underside of the receiving space 10, which allows the water to be drained away. Furthermore, the pipe socket serves to connect the receiving space 10 to a drain pipe 100 in order to direct the water into the ground via the overflow pipe 12. The pipe socket 14 can be designed in different ways. For example, it is conceivable to provide the pipe socket 14 with a flange connection in order to ensure a secure connection of the drain pipe 100 to the receiving space 10. In Figure 6, the connection of the outlet container to a drain pipe 100 that leads into the ground can be seen.

[0041] It is also clear from Figures 1 and 2 that the receiving space 10 has a second pipe socket 15, which is arranged on the underside of the receiving space 10 and protrudes outwards beyond the receiving space 10. The second pipe socket 15 shown serves to connect the receiving space 10 to an inlet pipe 110 in order to guide the water into the outlet container. By arranging the second pipe socket 15, which forms an opening on the underside of the receiving space 10, the receiving space 10 can be filled with water from bottom to top. As described above, the pipe socket 15 can be designed in different ways to ensure that the inlet pipe 110 is securely connected to the receiving space 10. The connection of the receiving space 10 to an inlet pipe 110, in particular as a connecting element to an inlet shaft 120, can be seen in Figures 4 and 6. It is also conceivable to introduce the water directly from a surface into the outlet tank without using an inlet shaft 120.

[0042] Fig. 1 and 2 also show that the receiving space 10 is designed in the form of a chamber 16 which is delimited by several walls and has openings for the supply and discharge of water. Furthermore, the receiving space 10 is open at the top. The top can be closed by a cover 17, as can be clearly seen in Fig. 1 and 2. The cover 17 can be detachably connected to the receiving space 10, for example by screw connections. Other types of connection are conceivable.

[0043] Figures 4 and 6 show an embodiment of a system for surface drainage of an area with an outlet tank according to Figures 1 and 2 and an inlet shaft 120. It can be clearly seen in Figures 4 and 6 that the inlet shaft 120 is arranged in front of the outlet tank in the direction of flow of the water and is connected to it.

[0044] The inlet shaft 120 shown in Figs. 4 and 6 has a substantially cylindrical shape. The use of other geometries and variants of the inlet shaft 120 is conceivable. It is also possible to connect the outlet container to a commercially available inlet shaft.

[0045] It can also be seen that the inlet shaft 120 shown has a grid on its top with which leaves and other impurities can be removed from the water. The inlet shaft 120 can be equipped with various devices for cleaning the

water.

[0046] Furthermore, the inlet shaft 120 shown is of modular construction and comprises a volume element for receiving wet sludge, which is arranged on the underside of the inlet shaft 120. Furthermore, the inlet shaft 120 has an element with a pipe socket for connecting the inlet shaft 120 to a pipe or, in the specific application, to the outlet container.

[0047] Figures 4 and 6 also show that the outlet tank is arranged higher relative to the inlet shaft 120. During heavy rainfall, the water in the inlet shaft 120 rises. As the water level in the inlet shaft 120 rises, the water flows into the outlet tank via the inlet pipe 110, whereby the receiving space 10 of the outlet tank is filled from bottom to top.

[0048] It is also apparent from Figures 3 to 6 that the outlet container can be connected to an installation aid 18 in order to align the outlet container with the inlet shaft 120. The installation aid 18 can be designed in different ways.

[0049] In Figs. 3 and 4 it can be seen that the installation aid 18 comprises several support elements 19 as well as a vertical 20 and a horizontal position sensor 21. The support elements 19 are designed in the form of L-profiles which are connected to one another and/or to the outlet container. Other geometries of the support elements are possible. In this specific embodiment, four L-profiles are arranged perpendicular to the underside of the outlet container, with the upper ends of the four L-profiles being connected to the underside of the outlet container. It can also be seen that the support elements 19 are connected to one another by diagonal connecting struts which increase the stability of the installation aid 18 by diverting tensile and compressive forces. In Fig. 4 it can be clearly seen that the position of the inlet shaft 120 relative to the outlet container is determined by the vertical 20 and horizontal position sensor 21.

[0050] The installation aid 18 shown in Figures 3 and 4 further comprises a support on its underside, which can be placed and fixed on the same foundation as the inlet shaft 120, thereby achieving an optimal height alignment of the outlet container to the inlet shaft 120. As can be seen in Figures 3 and 4, the support can comprise two L-profiles that are arranged parallel to one another.

[0051] Figures 5 and 6 show that the installation aid 18 can have an annular position sensor 22. This can be designed in the form of an annular disk that can completely enclose a substantially cylindrical inlet shaft 120 and enables optimal positioning of the inlet shaft 120 in relation to the outlet container. The inner circumference of the annular position sensor 22 encloses the outer circumference of the inlet shaft 120.

[0052] The method for surface drainage of an area using an embodiment of an outlet container according to the invention is explained by way of example with reference to Fig. 2. In the event of heavy rainfall, the rainwater is directed into the outlet container, with the outlet container being filled from bottom to top. The outlet container can be connected to an inlet pipe 110, in particular on the underside of the receiving space 10. For this purpose, the receiving space 10 has a pipe socket 15 on its underside for connecting the outlet container to an inlet pipe 110. When the water is introduced into the outlet container, the water level in the receiving space 10 rises. The water is separated into two fractions by the overflow pipe 12, which protrudes into the interior of the receiving space 10. The first fraction, which flows earlier, contains a larger amount of impurities than the second fraction, since the first flush flushes a larger amount of pollutants from the area to be drained. The separation of the second water fraction, which is almost pure from a hydrological point of view, is achieved by arranging the upper edge of the overflow pipe 12 at the lower end of the outlet opening 11. Since the upper edge of the overflow pipe 12 is arranged higher than the lower end of the outlet opening 11, it is achieved that

the contaminated water flowing earlier has already been drained to the surface through the drain openings 11 before the water flowing later is drained into the subsoil via the overflow pipe 12. In order to facilitate the drainage of the second fraction into the subsoil, the overflow pipe 12 protrudes in the form of a further pipe socket 14 on the underside of the receiving space 10. This means that the outlet container can be connected to a drain pipe 100.

REFERENCE SYMBOL LIST

10 recording room

11 drain opening

12 overflow pipe

13 porous cover

14 first pipe socket

15 second pipe socket

16 chambers

17 cover

18 installation aids

19 support elements

20 vertical position sensor 21 horizontal position sensor 22 ring-shaped position sensor 100 drain pipe

110 inlet pipe

120 inlet shaft

Claims (13)

patent claims 1. Outlet container for surface drainage of an area, in particular a street, a parking area, a square or a sidewalk, with a receiving space (10) for receiving the water and at least one drain opening (11), wherein the outlet container comprises an overflow pipe (12) through which the water can be separated into fractions, in particular a first and a second fraction, characterized in that the overflow pipe (12) projects into the interior of the receiving space (10) and the upper edge of the overflow pipe (12) is arranged higher than the lower end of the drain opening (11), so that the second fraction can be drained through the overflow pipe (12) into the subsoil and the first fraction can be drained through the drain opening (11) to a surface, in particular into a bed, in particular a planted deep bed and/or a soil filter, in particular a green hollow. 2, Discharge container according to claim 1, characterized in that the drain opening (11) is arranged laterally on the receiving space (10) and is designed in particular in the form of a slot which is arranged substantially perpendicular to the surface. 3. Discharge container according to claim 1 or 2, characterized in that the receiving space (10) has a plurality of drainage openings (11), in particular a plurality of slots, which are arranged distributed on one side of the receiving space (10). 4. Discharge container according to one of the preceding claims, characterized in that the overflow pipe (12) has a porous and/or perforated and/or partially permeable cover (13) for cleaning and/or filtering the second fraction, which is arranged at the upper end of the overflow pipe (12). 5. Discharge container according to one of the preceding claims, characterized in that the overflow pipe (12) has a first pipe socket (14) which projects outwards beyond the receiving space (10) on the underside of the receiving space (10) for draining the second fraction, for connecting the receiving space (10) to a drain pipe (100). 6. Outlet container according to one of the preceding claims, characterized in that the receiving space (10) has a second pipe socket (15) for introducing the water, which is arranged on the underside of the receiving space (10) and projects outwards beyond the receiving space (10), for connecting the receiving space (10) to an inlet pipe (110). 7. Discharge container according to one of the preceding claims, characterized in that the receiving space (10) is designed in the form of a chamber (16) which is open at the top, the receiving space (10) is connectable to a cover (17) which, in use, is arranged on the top of the receiving space (10) in order to close the top of the receiving space (10). 8. System for surface drainage of an area with at least one outlet container according to one of the preceding claims, wherein the outlet container can be connected or is connected to at least one inlet shaft (120) for pre-cleaning the water, which is arranged in the flow direction of the water before or after the outlet container. 9. System for surface drainage according to claim 8, characterized in that the outlet tank is arranged higher relative to the inlet shaft (120), wherein the Water can be drained into the receiving space (10) of the outlet tank by rising water level in the inlet shaft (120). 10. System for surface drainage according to claim 8 or 9, characterized in that the outlet container can be connected to an installation aid (18) for aligning the outlet container with the inlet shaft (120). 11. System for surface drainage according to claim 10, characterized in that the installation aid (18) comprises several support elements (19) and a vertical (20) and/or a horizontal position sensor (21), wherein the position of the inlet shaft (120) relative to the outlet container can be adjusted by the vertical (20) and horizontal position sensor (21). 12. System for surface drainage according to claim 10, characterized in that the installation aid (18) has an annular position sensor (22) which completely encloses the inlet shaft (120), in particular a cylindrical inlet shaft (120), during use. 13. Method for surface drainage of an area, in particular a road, a parking area or a sidewalk, using an outflow container according to one of claims 1 to 7, with the following steps - collecting the water in the receiving space (10) of the outflow container - raising the water level in the receiving space (10) of the outflow container - separating the water into fractions, in particular into a first and a second fraction, through the overflow pipe (12) - Discharge of the first fraction through the discharge opening (11) from the receiving space (10) to the surface, in particular into a deep bed and/or a soil filter, in particular into a green hollow _ - Draining the second fraction through the overflow pipe (12) from the receiving chamber (10) into the subsoil. Here 3 sheets of drawings