DE102017109276A1 - Downcomer and dip sheet, Separationswandung and baffle plate for this - Google Patents

Abstract

The invention relates to a downflow shaft (1) for a road or other floor drain, with a shaft body (10) defining a shaft volume (18) with a shaft bottom (11) and a lateral shaft wall (12), an inlet opening (20). which opens from above into the shaft volume (18), a separation device (30) for retaining filterable substances from contaminated surface water, and a drain opening (21) which is located between the shaft bottom (11) and the inlet opening (20) in the shaft wall (12 ), wherein the separation device (30) has a dip sheet (40) with a downwardly directed inlet leg (41) and a laterally oriented arc outlet (42), wherein the arc outlet (42) with the drain opening (21) is fluidly connected, and wherein an inlet opening (43) of the inlet leg (41) is arranged higher than the shaft bottom (11) and is arranged lower than the drain opening (21). Moreover, the invention relates to the dip sheet as such, a Separationswandung and a baffle plate for this, as well as a retrofit kit containing at least the dip sheet, the Separationswandung or the baffle plate.

Description

The invention relates according to the preamble of claim 1, a downcomer for a road or other floor drain for surface water.

Water, especially surface water that enters a road drain due to precipitation events, has impurities. In addition to coarse impurities such as leaves, branches and the like, dissolved and undissolved pollutants are also contained in the water. Such water contaminated with solid particles and / or contaminated pollutants should not be passed into the sewer system without prior purification or otherwise, e.g. as process water, continue to be used. Otherwise, it can in particular lead to a blockage of the sewer.

It is therefore known to arrange or form in downstream manholes of a road or other floor drain separation device or filter devices for retaining filterable substances (AFS) from contaminated surface water. The surface water is usually from sealed surfaces, such as roads, parking areas or runways and runways, run-off rainwater. These surfaces have impurities in the form of e.g. Brake and tire abrasion or caused by catalyst discharge pollutants, especially heavy metals, oils and polyaromatic hydrocarbons. The surface water can also be water that drains from roofs and other facilities. In particular, in the case of metal roofs, the water absorbs heavy metals, which are then swept along as heavy metal ions in hydrostatic form.

DE 10 2010 044 971 A1 shows an upflow filter device which is used in such a way in a street drain that water first flows through a basket-shaped strainer and passes from there to an inlet of the filter unit. The water is passed from the inlet via a flow bridge, bypassing the filter unit in a sedimentation and rises from there through the filter unit again, and finally by leaving the filter unit in a purified form. Such a filter unit works satisfactorily. However, this is relatively expensive to construct and expensive, difficult to maintain, and fulfills the cleaning as a precursor to the sewer system over. The basket-shaped strainer alone, however, is not sufficient to retain sufficiently many filterable substances.

The invention is therefore based on the object to develop a downcomer for a road or other floor drain with separation device for the retention of filterable substances (AFS) from contaminated surface water whose Abscheidewirkungsgrad is sufficiently high for the discharge of wastewater. At the same time, the downcomer should be comfortable and inexpensive to operate and maintain. In addition, the downcomer should be relatively easy and inexpensive to produce, and the separation device preferably be retrofitted in existing shaft bodies.

Main features of the invention are specified in the characterizing part of claim 1. Embodiments are the subject of claims 2 to 12.

The invention relates to a downcomer for a road or other floor drain, with a shaft body, which defines a shaft volume with a shaft bottom and a lateral shaft wall, with an inlet opening, which opens from above into the shaft volume, with a separation device for retaining filterable materials (US Pat. AFS) of contaminated surface water, and having a drain opening formed between the shaft bottom and the inlet opening in the shaft wall, wherein the separation device comprises a dip sheet with a downwardly directed inlet leg and a laterally oriented arc outlet, wherein the arc outlet is fluidly connected to the drain opening , and wherein an inlet opening of the inlet leg is arranged higher than the shaft bottom and is arranged lower than the drain opening.

During operation, the dive bow dives so deeply into the water layer in the shaft body that water from the middle dirty water charge enters the inlet opening. Slight particles (<1 g / cm ³ ) in the dirty water float above the inlet, namely near the waterline. Heavy particles sink to the bottom of the shaft and are thus below the inlet opening. By virtue of the fact that the arc outlet is fluidically connected to the drainage opening, a fluid connection can be formed between the shaft volume and a region laterally of the shaft body by means of the drainage opening. From here, the water can be carried away.

Preferably, the drain opening is arranged in the upper half of the shaft body. By a large manhole volume in relation to the incoming amount of water can namely achieve a large flow calming.

Particularly suitable is the separation device for embodiments in which the shaft wall or the inner cross section of the shaft body is round. A use of However, rectangular shaft walls or shaft bodies is also possible.

In the region of the inlet opening attachments can be arranged with a manhole frame and a grate, a support ring and a pressure ring. A grate or an attachment serve to form the upper traffic area. In essays passages should be formed. Very gross filth can already be withheld hereby. A support ring may be formed as a reduction in order to make the inlet opening in relation to the diameter of the shaft body small. However, a hole in the support ring should be designed so large that the dip sheet can be passed. The later described optional baffle should also fit through this hole. Thus, the support ring at a service does not need to be removed to remove the dip sheet and / or the baffle. Optionally, a collecting basket can be arranged above the discharge opening, preferably above the optional deflecting plate. This can be coarse impurities such as stones and foliage hold back.

The dive bow can be retrofitted into existing downcomers, whereby an inventive downcomer can be produced. However, the downcomer can also be delivered directly to the factory with the dip sheet and the other components.

According to a special embodiment, the inlet leg in the region of the inlet opening has an elongated cross section, preferably an elliptical cross section. Thus, the inlet leg can be placed flat in front of the shaft wall.

The bow outlet should have a circular cross-section at the end remote from the inlet leg. This makes it easy to connect to standard drainage pipes.

Preferably, the cross-sectional area of the inlet leg in the region of the inlet opening is at least as large as the cross-sectional area of the arc outlet at the end facing away from the inlet leg. Most preferably, it is even larger. As a result, there is no increased flow velocity behind the inlet opening and there is no bottleneck here.

In a more detailed embodiment of the arc outlet is connected to a sewer pipe. The sewer pipe directs the water from the shaft body to a destination. The connection of the sheet outlet to the sewer pipe may be outside of the shaft body, but preferably it lies at least in the drain opening, and particularly preferably the drain pipe protrudes through the drain opening into the shaft volume. In fact, in this order, ease of installation and maintenance increases.

Furthermore, it is advantageous if the dip sheet has a detachable pipe connection to a wastewater pipe leading through the discharge opening at the end of the sheet outlet facing away from the inlet leg. Thus, the dipping bow for shaft cleaning can be removed without tools. The detachable pipe connection may be a plug connection. Preferably, however, the detachable pipe connection is a suspension of the dipping bow with a suspension means, which is arranged geodetically at the top of the inlet leg facing away from the end of the bow sequence. The weight of the dip sheet then preferably compresses sealing surfaces at the end remote from the inlet leg of the arc outlet and the sewage pipe by a torque. Preferably, the dip sheet is made of metal. Especially to be preferred is a cast-iron diving bow. For removal of the dipping bow, preferably a removal means, for example a removal eye or a removal hook, is arranged on the latter. Thus, the dive bow can be pulled out of the shaft body with a tool hook.

Furthermore, it is provided in a special embodiment that the inlet opening is formed laterally in the inlet leg and the inlet leg is closed down by a limiting element. This avoids laminar upward flow below the inlet opening, which, as the filling level increases with heavier AFS particles, could transport them upwards again from the bottom of the shaft. The inlet opening is preferably located directly adjacent to the limiting element and thus preferably at the free end of the dip sheet.

A refinement is such that the cross-sectional area of the inlet opening is at least as large as the cross-sectional area of the arc outlet at the end facing away from the inlet leg. Preferably, the cross-sectional area of the inlet opening is at least as large as the cross-sectional area of the inlet leg in the region of the inlet opening. Thus, the inlet velocity of the water is low and particles can also fall or rise in the vicinity of the inlet opening up or down from the suction zone.

According to a special design, the laterally oriented arc outlet is formed by a laterally oriented downcomer. As a result, the deflection from the inlet leg into the drainage leg can be made harmonious. In addition, a lever arm, which can be helpful for the fixation of the dive bow.

In a variant of the downcomer, it is provided that a lower part of the shaft volume is subdivided by means of a separation wall in a horizontal direction into a first subvolume and at least a second subvolume, wherein the Separationswandung forms an upper overflow, which is located higher than the inlet opening of the dipping bow and is arranged lower than the drain opening, and wherein the inlet opening is arranged in the first partial volume. By means of the separation wall, a calming of the water flow and the AFS particle takes place, so that a high separation efficiency is achieved. An upper part of the shaft volume above the lower part should not be divided in the horizontal direction. It is usually sufficient if the lower part is divided into exactly two partial volumes. So that a uniform water overflow can take place in the region above the first partial volume, an embodiment is to be preferred, according to which the overflow is formed by a horizontally oriented upper edge of the separation wall. The Separationswandung can be inserted in particular from above through the inlet opening in the shaft body or be. In addition to the grate, a manhole frame and a support ring may also have to be removed.

It is an advantage of dimensioning, wherein the inlet opening is arranged in the upper third of the first sub-volume. As a result, below the inlet opening enough height for the deposition of heavy particles / foliage available. Because the main part of the particles should fall out of the dirty water outside the first subregion, a design is favorable according to which the first subvolume is smaller than that of the further subvolume. Alternatively or additionally, the projection area of the first partial volume in a horizontal plane should be smaller than that of the further partial volume.

Furthermore, the separation efficiency can optionally be increased by providing a flow cross-section which surrounds the inlet opening in an annular manner and can be flowed through vertically in the first partial volume in an annular manner. This avoids flow bottlenecks with increased flow velocities.

Optionally, the Separationswandung be integrally formed on the shaft body, for example, consist of concrete or cast iron. In a particular embodiment, however, it is provided that the Separationswandung is clamped by elastic deformation of the shaft wall. This is inexpensive, wear-free and easy and convenient to install. In this way, the separation wall can in particular be elastically deformed and installed under tension. It succeeds a fixation, even if no further separate fixing means are provided for fixing the Separationswandung. The Separationswandung is then so only "loose", but with bias, inserted into the shaft body, for example by bending, in particular to the vertical direction. Optionally, position beads or position ribs may be formed on the shaft body with which the separation wall corresponds. This achieves an additional position assurance. It is sufficient for the functionality if the separation wall does not completely seal the first partial volume in the horizontal direction or completely relative to the remainder of the lower part of the shaft volume. But it should be prevented by a horizontal passage of coarse AFS portion of the separation wall over.

The separation wall can be retrofitted in existing downcomers, whereby an inventive downcomer can be produced. However, the downcomer can also be delivered directly to the factory with the separation wall and the other components.

A special embodiment variant provides that the separation wall has a concave curvature in the horizontal plane on the side pointing in the direction of the first partial volume. Thus, the Separationswandung can be closely guided around the inlet leg and the first part volume can be kept small. Accordingly, it is preferable if the separation wall in the horizontal plane has a convex curvature on the side facing away from the first partial volume. Furthermore, it is advantageous if the separation wall is straight in the vertical plane. As a result, laminar vertical flows are promoted, which promote the precipitation of the particles. Particularly preferably, the separation wall is aligned geodetically perpendicular.

Furthermore, it is provided in an optional embodiment that the Separationswandung at least one horizontal end has a support leg, preferably at two or two horizontal ends, which extends in the vertical direction and lies flat against the shaft wall. This makes it easy to install the separation wall. In addition, this may be formed between the shaft wall and the support leg, a sealing surface. It is preferable to have an orientation in which the support leg faces away from the first sub-volume in the horizontal direction. In particular, in combination with the optional concave / convex curvature of the Separationswandung this way a kind of resilient accordion can be provided. The Separation wall is thus easy to assemble and supports stable. Optionally, the Separationswandung have beads, folds or folds. As a result, the rigidity and stability is high. In a special design, a support edge pointing into the center of the shaft body is arranged on the free end of the support leg in the horizontal direction. This stabilizes the support leg and this is supported evenly on the shaft wall. Inexpensive in particular is an embodiment according to which the separation wall, the support leg or legs and the support edge (s) are integrally formed.

A design option provides that the Separationswandung consists of a sheet or a plastic material, for example, a metal sheet or a formed plastic sheet. This is particularly easy to manufacture, stable and wear-resistant. The latter in particular, if a stainless sheet is used as a metal sheet.

In a further embodiment, a deflection plate in the shaft volume is arranged above the first sub-volume, which diverts surface water entering from above through the inlet opening from the first sub-volume. Thus, the surface water initially flows primarily into the deviating from the first sub-volume further sub-volume, where already a large part of the AFS particles can fail. Preferably, the baffle plate spans the first part volume horizontally, in particular completely. Thus, even surface water which flows into the shaft body at a horizontal inlet velocity can initially be kept away from the first partial volume. Preferably, the baffle plate is at least partially arranged higher than the drain opening. In order for the shape can be kept simple because they must have no pipe openings. The baffle should have a top slope that diverts surface water away from the vertical projection of the first sub-volume, particularly the second sub-volume or sub-volume. Due to the gradient, the surface water flows briskly, there is no backwater on the baffle and this must be less stable. In addition, the baffle should reach below the drain opening. As a result, the water can be guided obliquely and controlled by the upper waterline, which floating particles are drawn less under the waterline than in a free waterfall from above.

The baffle plate can be removably inserted into the shaft body. So it can be removed for shaft cleaning. It lends itself to a design according to which the baffle plate has coupling means, with which it can be suspended or suspended above the dipping bow, e.g. on a hanger on the dip sheet, on the sewer pipe or on the shaft body. To avoid incorrect installations, it is advantageous if a position securing element is provided, with which the baffle plate can be mounted only in a single mounting position in the shaft volume. For removal of the deflecting plate, a removal means, for example a removal eye or a removal hook, is preferably arranged on the latter. Thus, the baffle can be pulled out of the shaft body with a tool hook. In combination with an optionally round shaft body, a design is available according to which the deflection plate has an elliptical basic shape.

Furthermore, it is provided according to a specific embodiment variant that a filter element is arranged in the dip sheet and / or a pipe section adjoining the dip sheet outside the shaft body. This filter also fine AFS particles, which do not float or fall due to a density of 1 g / cm ³ , filter out. The filter element should be removable. It can be washed or replaced for maintenance.

Furthermore, there is an optional supplement, according to which the downcomer has an emergency overflow with an overflow opening in the manhole volume, wherein the emergency overflow forms a bypass to the optional filter element. This prevents the shaft body from overflowing if the dip sheet is stuck in the sediment or the optional filter element is agglomerated.

The invention also relates to a bottom surface in which a downcomer as described above and below is arranged. Furthermore, the invention relates to the use of a downcomer as described above and below for discharging surface water collected with a bottom surface. The advantages correspond to those of the downcomer as such. In particular, a high degree of separation efficiency can be achieved hereby.

• • der Einlaufschenkel weist im Bereich der Einlauföffnung einen länglichen Querschnitt auf, vorzugsweise einen ellipsenartigen Querschnitt,
• • der Bogenablauf weist an dem vom Einlaufschenkel abgewandten Ende einen kreisförmigen Querschnitt auf,
• • die Querschnittsfläche des Einlaufschenkels ist im Bereich der Einlauföffnung wenigstens so groß wie oder größer als die Querschnittsfläche des Bogenablaufs an dem vom Einlaufschenkel abgewandten Ende,
• • der Tauchbogen weist eine Einhängung mit einem Einhängemittel auf, das geodätisch oben an dem vom Einlaufschenkel abgewandten Ende des Bogenablaufs angeordnet ist,
• • der Tauchbogen besteht aus Metall, vorzugsweise Gusseisen,
• • an dem Tauchbogen ist ein Entnahmemittel, zum Beispiel eine Entnahmeöse oder ein Entnahmehaken angeordnet,
• • die Einlauföffnung ist seitlich in dem Einlaufschenkel ausgebildet und der Einlaufschenkel ist nach unten durch ein Begrenzungselement verschlossen,
• • die Einlauföffnung liegt benachbart zum Begrenzungselement,
• • die Querschnittsfläche der Einlauföffnung ist wenigstens so groß wie die Querschnittsfläche des Bogenablaufs an dem vom Einlaufschenkel wegweisenden Ende,
• • die Querschnittsfläche der Einlauföffnung ist wenigstens so groß wie die Querschnittsfläche des Einlaufschenkels im Bereich der Einlauföffnung,
• • der seitlich ausgerichtete Bogenablauf ist von einem seitlich ausgerichteten Ablaufschenkel ausgebildet,
• • in dem Tauchbogen ist ein Filterelement angeordnet,
• • das optionale Filterelement ist entnehmbar ausgebildet,
• • am Tauchbogen ist ein Notüberlauf ausgebildet,
• • der Notüberlauf mündet zwischen dem Filterelement und dem freien Ende des Bogenablaufs in den Einlaufschenkel oder den Bogenablauf ein,
• • der Notüberlauf bildet einen Bypass zum optionalen Filterelement aus.

Moreover, the invention relates to a diving bow as such, as described above and below with regard to its optional technical details. Each of these optional technical features of the dipping bow can be essential to the invention on its own. In particular, the invention relates to a dip sheet with a downwardly oriented inlet leg and a laterally oriented arc outlet. Among other things, this may have the following features individually or in combination:

• The inlet leg has an elongate cross section in the region of the inlet opening, preferably an elliptical cross section,
• The arc outlet has a circular cross-section at the end facing away from the inlet leg,
• The cross-sectional area of the inlet leg is at least as great as or greater than the cross-sectional area of the arc outlet at the end facing away from the inlet leg in the area of the inlet opening,
• The dipping bow has a suspension with a suspension means, which is arranged at the top geodetically at the end remote from the inlet leg of the arc run,
• The dip sheet is made of metal, preferably cast iron,
• An extraction means, for example a removal eye or a removal hook, is arranged on the dip sheet,
• The inlet opening is formed laterally in the inlet leg and the inlet leg is closed at the bottom by a delimiting element,
• The inlet opening is adjacent to the limiting element,
• The cross-sectional area of the inlet opening is at least as large as the cross-sectional area of the arc outlet at the end facing away from the inlet leg,
• The cross-sectional area of the inlet opening is at least as large as the cross-sectional area of the inlet leg in the region of the inlet opening,
• The laterally oriented arc outlet is formed by a laterally oriented downcomer,
• • in the dip sheet a filter element is arranged,
• The optional filter element is removable,
• • an emergency overflow is formed on the diving bow,
• • the emergency overflow opens into the inlet leg or the bow outlet between the filter element and the free end of the arc outlet,
• • The emergency overflow forms a bypass to the optional filter element.

• • der Überlauf ist von einer horizontal ausgerichteten Oberkante der Separationswandung ausgebildet,
• • die Separationswandung ist elastisch verformbar oder durchbiegbar, insbesondere um durch elastische Verformung an einer Schachtwandung festklemmbar zu sein,
• • die Separationswandung weist in der horizontalen Ebene auf einer ersten Seite eine konkave Krümmung auf,
• • die Separationswandung weist in der horizontalen Ebene auf einer der ersten Seite gegenüberliegenden Seite eine konvexe Krümmung auf,
• • die Separationswandung ist in der vertikalen Ebene gerade ausgebildet,
• • die Separationswandung weist an wenigstens einem, vorzugsweise an beiden horizontalen Ende jeweils einen Stützschenkel auf, der sich in der vertikalen Richtung erstreckt und eine Anlagefläche für eine Schachtwandung ausbildet,
• • der Stützschenkel liegt in der horizontalen Richtung in Richtung der optionalen konvexen Krümmung,
• • die Separationswandung weist Sicken, Abkantungen oder Faltungen auf,
• • am in der horizontalen Richtung freien Ende des Stützschenkels ist eine nach innen weisende Stützkante angeordnet,
• • die Separationswandung, der oder die Stützschenkel und der oder die Stützkanten sind einteilig ausgebildet,
• • die Separationswandung besteht aus einem Blech oder einem Kunststoffmaterial, zum Beispiel aus einem Metallblech oder einer umgeformten Kunststoffplatte
• • das Metallblech ist ein rostfreies Blech.

Furthermore, the invention relates to a Separationswandung as such, as described above and below with regard to their optional technical detail features. Each of these optional technical features of the separation wall can be essential to the invention per se. The separation wall in particular forms an upper overflow and may inter alia have the following features individually or in combination:

• The overflow is formed by a horizontally oriented upper edge of the separation wall,
• The separation wall is elastically deformable or bendable, in particular in order to be able to be clamped by elastic deformation on a shaft wall,
• The separation wall has a concave curvature in the horizontal plane on a first side,
• The separation wall has a convex curvature in the horizontal plane on a side opposite the first side,
• The separation wall is straight in the vertical plane,
• The separation wall has at least one, preferably at both horizontal ends in each case a support leg which extends in the vertical direction and forms a contact surface for a shaft wall,
• The support leg lies in the horizontal direction in the direction of the optional convex curvature,
• The separation wall has corrugations, folds or folds,
• At the free end in the horizontal direction of the support leg an inwardly directed support edge is arranged,
• The separation wall, the support leg (s) and the support edge (s) are integrally formed,
• • the separation wall consists of a sheet metal or a plastic material, for example a metal sheet or a formed plastic sheet
• • The metal sheet is a stainless sheet.

• • die Umlenkplatte weist Koppelmittel auf,
• • die Umlenkplatte weist ein Lagesicherungselement auf,
• • an der Umlenkplatte ist ein Entnahmemittel, zum Beispiel eine Entnahmeöse oder ein Entnahmehaken angeordnet,
• • die Umlenkplatte weist eine elliptische Grundform auf.

Furthermore, the invention relates to a baffle as such, as described above and below with regard to their optional technical detail features. Each of these optional technical features of the baffle plate can be essential to the invention on its own. The baffle may inter alia have the following features singly or in combination:

• The deflecting plate has coupling means,
• The deflecting plate has a position securing element,
• A removal means, for example a removal eye or a removal hook, is arranged on the deflection plate,
• • The baffle plate has an elliptical basic shape.

Finally, the invention relates to a retrofit kit for a shaft body, which defines a shaft volume with a shaft bottom and a lateral shaft wall, comprising a dipping bow, as described above and below with regard to its optional technical detail features, and a separation wall, as described above and below with regard to their optional technical details. Optionally, a baffle plate may be included in the retrofit kit.

The advantages of the dip sheet, the separation wall, the deflection plate and the retrofit kit correspond to those described on the respective detail features.

• 1 eine perspektivische Seitenansicht von einem Ablaufschacht;
• 2 einen vertikalen Längsschnitt durch eine perspektivische Seitenansicht eines Ablaufschachts wie er in 1 gezeigt ist;
• 3 einen Längsschnitt durch einen Ablaufschacht wie er in 1 gezeigt ist;
• 4 eine perspektivische Ansicht eines Ablaufschachts wie er in 1 gezeigt ist senkrecht von oben;
• 5 einen horizontalen Querschnitt eines Ablaufschachts wie er in 3 an Position B-B gekennzeichnet ist von oben;
• 6 einen horizontalen Querschnitt eines Ablaufschachts wie er in 3 an Position C-C gekennzeichnet ist von oben;
• 7 eine perspektivische Ansicht einer Separationswandung; und
• 8 eine perspektivische Ansicht eines Tauchbogens.

Further features, details and advantages of the invention will become apparent from the wording of the claims and from the following description of the embodiments with reference to the drawings. Show it:

• 1 a side perspective view of a downcomer;
• 2 a vertical longitudinal section through a perspective side view of a downcomer as in 1 is shown;
• 3 a longitudinal section through a downcomer as in 1 is shown;
• 4 a perspective view of a downcomer as in 1 shown is perpendicular from above;
• 5 a horizontal cross section of a downcomer as in 3 marked at position BB is from above;
• 6 a horizontal cross section of a downcomer as in 3 marked at position CC is from above;
• 7 a perspective view of a Separationswandung; and
• 8th a perspective view of a diving bow.

1 shows a side perspective view of a downcomer 1 , From the 2 and 3 are two different sections represented by this. From the view of the downcomer vertically from above according to 4 goes the cutting position of 3 out. The 5 and 6 each horizontal cross sections of the runway are shown, with the cutting positions in 3 marked with BB and CC. Out 7 is a separation wall 50 removable, as in the downcomer 1 after the 1 to 6 can be used. 8th shows a diving bow 40 in the downcomer 1 after the 1 to 6 can be used. Same reference numerals in the 1 to 8th and in the following description therefore relate to the same technical features.

In 1 First, one recognizes the external technical features of the downcomer 1 for a road or other floor drain. This has a shaft body 10 , with a shaft bottom (see reference numeral 11 in the 2 and 3 ) and a lateral round shaft wall 12 on. These define as from the 2 and 3 Removable is a manhole volume 18 , At the top is the shaft body 10 with a support ring 14 and an essay 15 covered. The essay 15 consists of a manhole frame 16 and a rust 17 , So that not all the traffic load acting on the tower in the shaft body 10 is initiated, supports the support ring 14 on a pressure ring 13 from. This is around the shaft body 10 is laid around and incorporated into the asphalt layer / roadbed so that a large payload area is available. Furthermore one recognizes in 1 a drain hole 21 between the shaft bottom and the pressure ring 13 in the shaft wall 12 is trained. in particular, the drain hole is located 21 in the upper half of the shaft body 10 , From the drain opening 21 a sewer pipe protrudes 45 out.

From the 2 . 3 . 4 . 5 and 6 goes in particular the inner workings of the drainage shaft 1 show, where the features described above are also provided as far as possible with reference numerals. One recognizes how an inlet opening 20 from above into the manhole volume 18 empties. This is through an upper open end of the shaft body 10 , a slot in the support ring, a slot in the manhole frame 16 and openings in the grate 17 Are defined.

Furthermore, a separation device 30 for retaining filterable substances (AFS) from contaminated surface water. This includes a diving bow 40 , a separation wall 50 and a baffle 60 ,

The diving bow 40 has a downwardly oriented tubular inlet leg 41 and a laterally oriented tubular arc drain 42 on, with the bow outlet 42 through a short horizontally oriented and tubular drainage legs is formed. The technical details are also in 8th recognizable.

The bow drain 42 is with the drain hole 21 fluidly connected by connecting to the drain line 45 connected. An inlet opening 43 of the inlet leg 41 is higher than the shaft bottom 11 and arranged lower than the drain opening 21 ,

The inlet leg 41 has in the area of the inlet opening 43 an elongated elliptical cross-section. The bow drain 42 on the other hand, it has the inlet leg 41 opposite end of a circular cross-section. The cross-sectional area of the inlet leg 41 in the area of the inlet opening 43 is greater than the cross-sectional area of the arc drain 42 on the inlet leg 41 opposite end. Here is the inlet opening 43 laterally in the inlet leg 41 formed, ie parallel to the extension axis of the inlet leg 41 , In the vertical direction V down is the inlet leg 41 by a frontal limiting element 44 locked. The inlet opening 43 is formed by a plurality of partial openings that extend beyond the circumference of the diving arc 40 distributed and adjacent to the limiting element 44 are arranged. The cross-sectional area of the inlet opening 43 is greater than the cross-sectional area of the arc drain 42 on the inlet leg 41 groundbreaking end.

Furthermore, the diving bow has 40 on the inlet leg 41 opposite end of the arc 42 a detachable pipe connection 46 to the sewer pipe 45 easy on the manhole volume 18 protrudes. The detachable pipe connection 46 is a suspension of the diving bow 40 with a hanging agent 47 , which geodesically at the top of the inlet leg 41 opposite end of the arc 42 is arranged. It will be in a corresponding Hanger at the top of the drainpipe 45 hooked. The weight of the diving bow 40 then clamps at sufficient self-weight, for example, if it is made of metal, sealing surfaces 48 on the inlet leg 41 opposite end of the arc 42 and the sewer pipe 45 through a torque together.

To remove the diving bow 40 is at this a sampling device 49 arranged in the form of a withdrawal loop. This sits on the top of the arch drain 42 , The hanger 47 are by pulling or pulling vertically on the sampling device 49 separable or joinable.

Further, a lower part TU of the shaft volume 18 by means of the separation wall 50 in a horizontal direction H in a first partial volume TU1 and a second subvolume TU2 divided. This partial volume TU1 and TU2 could also be called chambers. The technical details of the separation wall 50 are also the 7 removable.

The separation wall 50 consists of a metal sheet (alternatively, it could also be made of plastic) and forms an upper overflow 51 off, the first and second subvolume TU1 and TU2 connects with each other. The overflow is from a horizontal top edge of the separation wall 50 formed, which is arranged higher than the inlet opening 43 of the diving bow 40 and is arranged lower than the drain opening 21 , In particular, the inlet opening 43 in the upper third of the first sub-volume TU1 arranged. However, it is more than 2 cm below the upper edge of the Separationswandung 50 , Visible is the inlet opening 43 in the first subvolume TU1 arranged and the diving bow 40 lies above the first partial volume TU1 , The upper part TO of the shaft volume 18 above the lower part TU is not in the horizontal direction H divided.

The first partial volume TU1 is smaller than the second partial volume TU2 and also the vertical projection surface of the first sub-volume TU1 is smaller than that of the second sub-volume TU2 , For this purpose has the Separationswandung 50 in the horizontal plane (cf. 6 ) on the first partial volume TU1 pointing side a concave curvature 53 and on the first part volume TU1 pioneering side of a convex curvature 54 , In the vertical plane is the separation wall 50 just trained and geodetically aligned vertically.

The separation wall 50 indicates at both horizontal ends (see in particular 6 and 7 ) each have a support leg 52 on, moving in the vertical direction V over the entire height of the separation wall 50 extends and flat on the shaft wall 12 is applied. Between the shaft wall 12 and the supporting legs 52 in each case a sealing surface is formed. In addition, the support legs 52 each in the horizontal direction H from the first subvolume TU1 path. This can be the Separationswandung 50 away from the largest diameter at the shaft wall 12 be positioned.

Am in the horizontal direction H free end of the support leg 52 one is the center of the shaft body 10 pointing support edge 55 arranged over the entire height of the supporting leg 52 extends. The separation wall 50 , Supporting legs 52 and supporting edges 55 are formed in one piece, in particular by bending a Metal sheet (alternatively by bending a plastic plate).

Mounted and fixed is the separation wall 50 by elastic deformation, causing it to the shaft wall 12 is clamped. To do this, it will be installed around the vertical direction V bent so that the concavity and convexity of the separation wall is enhanced. Additionally or alternatively, the support legs 52 pressed against each other, causing the Separationswandung 50 and the support legs 52 how to compress a spring. After a partial relaxation in the mounting position is the Separationswandung 50 also installed further under tension. It presses in particular from the inside against the opposite lateral shaft walls 12 , There are no further separate fixative for fixing the Separationswandung 50 intended. It is harmless if the sealing surface is not completely fluid-tight. After filling the shaft body with water up to the discharge opening 21 , there is almost no pressure difference between the first and second part volumes TU1 . TU2 so that hardly any water or particles penetrate through the sealing surface.

How to particular in 6 can recognize is one the inlet opening 43 annular surrounding and vertically flowed through flow cross-section in the first sub-volume TU1 annular closed formed.

The baffle plate 60 is above the first sub-volume TU1 in the manhole volume 18 arranged. With the help of a top slope, it passes from above through the inlet opening 20 entering surface water from the first partial volume TU1 path. For this purpose, the baffle spans 60 the first partial volume TU1 horizontal (see in particular 5 ). The baffle plate 60 is partially positioned higher than the drain opening 21 and protrudes at least to below the upper pipe line of the drain pipe 45 , For this purpose, the baffle plate has an elliptical basic shape and is inserted obliquely into the shaft body, wherein the resulting gradient in the direction of the second partial volume TU2 has.

Furthermore, the baffle plate 60 removable in the shaft body 10 used. For this purpose coupling means are provided, with which the baffle plate 60 detachable above the diving bow 40 is mounted. In particular, it is with a Einhängemittel 61 on the diving bow 40 attached and supported with the entire weight on this. This will increase the torque of the diving bow 40 and thus the sealing effect in the sealing surfaces 48 with the sewage pipe 45 strengthened. The hanger 61 forms together with the diving bow 40 a position securing element, so that the baffle plate 60 only in a single installation position in the shaft volume 18 can be mounted.

For removal of the baffle plate 60 is at this a sampling device 62 arranged in the form of a withdrawal loop. This sits on the top of the baffle 60 ,

The operation of the drainage shaft 1 can be roughly described as follows:

Inflowing surface water flows through the tower 15 and then over the baffle plate 60 , Part of the surface water falls directly in the direction of the second partial volume TU2 , The rest is over the baffle 60 headed there. The predominant proportion of water thus flows in the direction of the second partial volume TU2 of the lower partial volume TU , By clamping the separation wall 50 Water slowly enters the first partial volume through the remaining cracks in the clamping area when it is empty TU1 , In the later filled state, there is almost no pressure difference between the partial volumes TU1 . TU2 whereby the water is flow-calmed.

If the surface water in the shaft body 10 increases during operation and from the second partial volume TU2 in the first partial volume TU1 flows, it already has a large part of the filterable substances in the second partial volume TU2 left behind. In particular, the surface water flowing down from the surface results in the second partial volume TU2 a downflow followed by the newly incoming surface water. During the downflow and later upflow again, AFS particles with a density> 1 g / cm ³ precipitate and sink in the second partial volume TU2 on the shaft floor 11 ,

The flow into the second partial volume TU2 is relatively calm and laminar. Particles with a density of> 1 g / cm ³ that reach here sink to the bottom of the shaft 11 in the range of the first partial volume TU1 , AFS particles with a density <1 g / cm ³ which it up to the side of the first part volume TU1 create swim due to the lower turbulence here on top and have little tendency in the first sub-volume TU1 to be washed or sucked.

As the water comes from a lower charge in the dip sheet 40 As a rule, the light particles do not enter the sewage pipe 45 reach. The boundary element 44 of the diving bow 40 at the same time ensures that vertically circulating AFS particles in the surface water, in the first sub-volume TU1 not or in a significantly smaller amount in the sewer pipe 45 reach.

The invention is not limited to one of the above-described embodiments, but can be modified in many ways.

Instead of a round cross-section of the shaft body 10 For example, square or oval shaft bodies may also be considered.

Optionally, in addition, a collecting basket above the drain opening 21 , preferably above the optional baffle 60 be arranged. This can be on the shaft body or the support ring 14 be hooked.

Furthermore, optional position beads or position ribs on the shaft body 10 be formed with which the Separationswandung 50 corresponds.

Further, optional in the diving bow 40 and / or to the diving bow outside the shaft body 10 be arranged downstream of the pipe section, a filter element that is preferably removable, and particularly preferably formed without tools removed.

Another addition may be that the downcomer 1 an emergency overflow with an overflow opening in the shaft volume 18 having. This can be formed in particular as a bypass to the optional filter element.

The optional filter element can additionally contain small AFS particles and AFS particles with a density of 1 g / cm ³ . Should such a filter element become hulled, the water level in the shaft body rises 10 at inlet of surface water. The optional emergency overflow, with its overflow opening higher than the filter element and higher than the "normal" waterline, can still drain the surface water. The sedimentation also takes place in the case of an emergency overflow, ie with a clogged filter unit. With these measures, a high separation efficiency is achieved.

All of the claims, the description and the drawings resulting features and advantages, including design details, spatial arrangements and method steps may be essential to the invention both in itself and in various combinations.

LIST OF REFERENCE NUMBERS

1

downcomer

10

carcases

11

shaft bottom

12

shaft wall

13

pressure ring

14

Support ring

15

essay

16

manhole frame

17

rust

18

pit volume

20

inlet opening

21

drain hole

30

separation device

40

diving bow

41

inlet leg

42

arch flow

43

inlet opening

44

limiting element

45

sewage pipe

46

detachable pipe connection

47

Hanger (diving bow)

48

sealing surfaces

49

Withdrawal means (dip bend)

50

Separationswandung

51

overflow

52

support legs

53

concave curvature

54

convex curvature

55

supporting edge

60

baffle

61

Hanger (baffle plate)

62

Withdrawal means (deflection plate)

H

horizontal direction

TU

lower part of the shaft volume

TU1

first partial volume

TU2

second partial volume

TO

upper part of the shaft volume

V

vertical direction

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102010044971 A1 [0004]

Claims (12)

Downstream shaft (1) for a road or other floor drain, with • a shaft body (10) having a shaft bottom (11) and a lateral shaft wall (12) defines a shaft volume (18), • an inlet opening (20) of a separation device (30) for retaining filterable substances from contaminated surface water, and an outlet opening (21) which is located between the shaft bottom (11) and the inlet opening (20) in the shaft wall (12 ), characterized in that the separation device (30) has a dip sheet (40) with a downwardly directed inlet limb (41) and a laterally aligned arc outlet (42), wherein the arc outlet (42) with the drain opening (21) fluidly connected is, and wherein an inlet opening (43) of the inlet leg (41) is arranged higher than the shaft bottom (11) and is arranged lower than the drain opening (21) , Downcomer (1) according to Claim 1 , characterized in that the inlet leg (41) in the region of the inlet opening (43) has an elongated cross section. Downcomer (1) according to one of Claims 1 or 2 , characterized in that the inlet opening (43) is formed laterally in the inlet leg (41) and the inlet leg (41) is closed at the bottom by a limiting element (44). Downstream shaft (1) according to one of the preceding claims, characterized in that the laterally oriented arc outlet (42) is formed by a laterally oriented downcomer. Downstream shaft (1) according to one of the preceding claims, characterized in that a lower part (TU) of the shaft volume (18) by means of a separation wall (50) in the horizontal direction (H) into a first partial volume (TU1) and at least a second partial volume ( TU2), wherein the Separationswandung (50) forms an upper overflow (51) which is higher than the inlet opening (43) of the dip sheet (40) and is arranged lower than the drain opening (21), and wherein the inlet opening ( 43) is arranged in the first subvolume (TU1). Downcomer (1) according to Claim 5 , characterized in that the separation wall (50) is clamped by elastic deformation on the shaft wall (12). Downcomer (1) according to one of Claims 5 or 6 , characterized in that the separation wall (50) has a concave curvature (53) in the horizontal plane on the side facing the first subvolume (TU1). Downcomer (1) according to one of Claims 5 to 7 , characterized in that the separation wall (50) at at least one horizontal end has a support leg (52) which extends in the vertical direction (V) and rests flat against the shaft wall (12). Downcomer (1) according to one of Claims 5 to 8th , characterized in that the separation wall (50) consists of a sheet metal or a plastic material. Downcomer (1) according to one of Claims 5 to 9 , characterized in that above the first sub-volume (TU1) a baffle plate (60) in the manhole volume (18) is arranged, which leads away from above through the inlet opening (20) entering surface water from the first sub-volume (TU1). Downstream shaft (1) according to one of the preceding claims, characterized in that a filter element is arranged in the dip bend (40) and / or a tube section adjoining the dip bend outside the shaft body (10). Downstream shaft (1) according to one of the preceding claims, characterized in that it has an emergency overflow with an overflow opening in the shaft volume (18).

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