EP1548193A2 - Device for preventing water entering a manhole shaft - Google Patents

Device for preventing water entering a manhole shaft Download PDF

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Publication number
EP1548193A2
EP1548193A2 EP04026935A EP04026935A EP1548193A2 EP 1548193 A2 EP1548193 A2 EP 1548193A2 EP 04026935 A EP04026935 A EP 04026935A EP 04026935 A EP04026935 A EP 04026935A EP 1548193 A2 EP1548193 A2 EP 1548193A2
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EP
European Patent Office
Prior art keywords
valve
opening
valve housing
float
air
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Granted
Application number
EP04026935A
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German (de)
French (fr)
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EP1548193B1 (en
EP1548193A3 (en
Inventor
Axel Bohatsch
Helmut Ötinger
Frank Magdeburg
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Individual
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    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F5/00Sewerage structures
    • E03F5/04Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/0401Gullies for use in roads or pavements
    • E03F5/0404Gullies for use in roads or pavements with a permanent or temporary filtering device; Filtering devices specially adapted therefor
    • EFIXED CONSTRUCTIONS
    • E03WATER SUPPLY; SEWERAGE
    • E03FSEWERS; CESSPOOLS
    • E03F1/00Methods, systems, or installations for draining-off sewage or storm water

Definitions

  • the invention relates to a device for preventing the ingress of water a sewage shaft according to the preamble of claim 1.
  • Such devices are used in wastewater management and in ventilated wastewater wells used.
  • Sewer systems especially for contaminated wastewater, are designed to be ventilated and therefore have appropriate ventilation openings in their sewer manholes. Through these vents, there is a constant exchange of air between the ducts and the atmosphere. The constant exchange of air prevents the accumulation of harmful and odorous gases, such as hydrogen sulfide. Too little air circulation can increase the air humidity in the shaft, which leads to the formation of sulfuric acid in the presence of hydrogen sulphide through biochemical processes. Sulfuric acid is highly aggressive and corrosive to concrete and metal parts in the shaft, causing extreme damage to the sewer system. This exchange of air ensures that the microorganisms responsible for acid formation are limited in their death. Through these vents in the manhole covers but also surface water enters the sewer and that has disadvantages.
  • WO 92/09753 now presents an insert for a manhole of a sewerage system, which closes the ventilation openings of the sewer covers during heavy rainfall.
  • the insert is positioned below the manhole cover and consists of a sump cross section sealing trough of liquid-tight material.
  • the cavity of the tub is connected via a plurality of laterally arranged air ducts with the located below the tub part of the shaft in connection.
  • Each air duct is associated with a buoyant ball element which is carried by the water located in the tub and which closes or opens the respective air duct depending on the water level.
  • In the bottom of the tub there is a water-drainage bore, through which water in the tub can drain directly into the sewer manhole.
  • the throttle bore is designed in its cross-section so that less water runs off, as nachf insects surface water is added. This regulates the water level in the tub during rainfall and thus the position of the floatable ball element. At a low water level, the air ducts are thus opened and the gaseous air can escape from the sewer system and at a high water level in the tub, the ventilation ducts are closed and it can no longer penetrate surface water in the sewer manhole.
  • this insert for a manhole has disadvantages. Thus, first of all the technical production effort and thus the production costs are very high, because a buoyant ball element is required for each ventilation duct.
  • Malfunctions can be, for example, a permanent closure or a permanent opening of the ventilation ducts, which leads to an interruption of the air circulation or to an unwanted entry of surface water into the duct system.
  • the increased wear shortens the life of the insert.
  • so much sand and foliage penetrates into the tub, that the buoyant ball elements are blocked in their freedom of movement, so that it comes to the constant closure of the ventilation ducts and thus to functional failure.
  • the invention is therefore based on the object to further develop a generic device for controlling the air circulation in a sewer manhole, which guarantees a trouble-free functioning and which requires a low production cost.
  • This object is solved by the characterizing features of claim 1. Expedient refinements emerge from the subclaims 2 to 4.
  • the inventive device for controlling the air circulation in a sewer manhole eliminates the disadvantages of the prior art. It is of particular advantage that only one central valve element is required for all lateral air openings of the valve unit. This saves high production costs. Of significant advantage, however, is the separation of leaves and sand from the penetrating surface water. It is particularly effective if the foliage and the sand deposited on a first retaining web in the leaf and sand trap and on a second retaining web at the passage to the closed valve unit. This is surface water freed from coarse impurities in the closed valve unit. This also increases the reliability of the valve unit, because the throttle opening in the bottom wall can no longer clog and the valve elements are no longer hindered in their freedom of movement.
  • the new device is inside a vertical sewer manhole 1 arranged and closing the sewage shaft 1 Manhole cover 2 covered.
  • Manhole cover 2 In the manhole cover 2 are several evenly arranged on a pitch circle ventilation holes 3.
  • the device is inserted below the manhole cover 2 in the sewer manhole 1 and consists of a leaf and sand trap 4, a sealing plate 5 and a valve unit. 6
  • the leaf and sand trap 4 is formed like a trough and facing with its open side of the manhole cover 2.
  • the sand and leaf catcher 4 has a radial extent, with which all ventilation openings 3 in the manhole cover 2 are detected.
  • the trough-like deciduous and sand trap 4 is closed at the bottom and has in its wall a plurality of uniformly spaced overflow openings 7.
  • the overflow 7 are arranged in height so that above the bottom of the leaf and sand trap 4 a circumferential retaining web 8 remains.
  • the sealing plate 5 is arranged wagerecht, attached via a plurality of retaining elements 9 in the sewer manhole 1 and carries the outer circumference of a fastened by means of a clamping ring, not shown sealing ring 10.
  • This sealing ring 10 is designed as a plastic tube inside which a stabilizing and stiffening filling is introduced.
  • a stabilizing and stiffening filling for example, elastic plastic profiles or a variety of granule-like particles can be used. Due to the shape, size and material of these profiles or particles, the sealing ring 10 can be optimized.
  • the sealing plate 5 further has a centrally disposed passage opening 11, the ventilation cross-section of the sum of the openings in the manhole cover 2 and the leaf and sand trap 4 corresponds.
  • This passage opening 11 is designed as a pipe socket which is flush with the underside of the sealing plate 5 and which projects beyond the sealing plate 5 upwards.
  • a retaining web 12 is formed in the sealing plate 5.
  • the valve unit 6 is arranged below the passage opening 11 of the sealing plate 5 and secured to the sealing plate 5.
  • To the valve unit 6 includes a trough-shaped valve housing 13, which has a sufficient for air circulation distance to the inner wall of the sewer manhole 1 in its radial extent.
  • the valve housing 13 has a preferably screwed-on bottom wall 14 with a throttle opening 15. This throttle opening 15 is covered on the inside of the valve housing 13 by a convexly curved screen member 16.
  • In the upper third of the valve housing 13 are two opposite air openings 17, which are connected to each other via a vent pipe 18.
  • the ventilation pipe 18 penetrates the interior of the valve housing 13.
  • the ventilation pipe 18 is round or prismatic in cross-section and has on its underside a valve opening 19.
  • This valve opening 19 is associated with a buoyant valve element 20 which is disposed below the valve opening 19. As shown in FIG. 3, this valve element 20 is held and guided by guide rods 21 in its position.
  • the valve element 20 includes a floating body 22 and a sealing element 23, wherein the sealing element 23 faces the valve opening 19 and is matched in shape and size to the valve opening 19.
  • the length of the guide rods 21 for the valve element 20 is chosen so that the float 22 can adapt to any water level in the valve housing 13.
  • valve element 20 in an expedient embodiment a laterally hinged hinge 24 attached to the vent pipe 18. With it swings the valve element 20, supported by the buoyancy forces of the valve housing 13 in the befmdlichen Water around the axis of the hinge 24 in the direction of the valve opening 19th the ventilation pipe 18.
  • the device according to FIG. 5 has the Valve housing 13 only an air opening 17 and the vent pipe 18 protrudes into the Interior of the valve housing 13 inside.
  • This miter cut forms the valve opening 19.
  • the buoyant valve element 20 carries.
  • the attachment point of the buoyant valve element 20 is selected so that that the valve element 20, supported by the buoyancy forces of the water, in Direction of the valve opening 19 is pivotable.
  • valve housing 13 in turn, two lateral air openings 17, which via a the interior the valve housing 13 penetrating vent pipe 18 connected to each other are.
  • valve opening 19 On the underside of the vent pipe 18 is again the valve opening 19 with a sealing ring 25 made of a soft material.
  • a holding basket 26 for a buoyant valve ball 27 is arranged below this valve opening 19. This holding basket 26 has guide properties, so that the valve ball 27 between its open position and its closed position experiences a forced guidance.
  • the floats 22 As the water level rises, the floats 22 also rise until they seal the valve opening 19 in a sealed manner. Thus, no more surface water can get into the sewer manhole 1. If no new surface water runs after, also the valve housing 13 is emptied, because the water flows off via the throttle opening 15. With the sinking of the water level in the valve housing 13, the float 22 also sinks and releases the valve opening 19 again.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sewage (AREA)
  • Self-Closing Valves And Venting Or Aerating Valves (AREA)
  • Float Valves (AREA)

Abstract

A perforated drain cover (2) lies flush with the road surface and covers the top of a shaft (1). A tray (4) with apertures (7) at the sides acts as a sand and leaf trap. Water flows from the sand and leaf trap onto a flat plate (5) with a central aperture (11) with an upstanding flange (12). Air flows through this aperture into a valve chamber (20). The water flows past a tube (18), with an air inlet (17) in each end, and a valve opening (19) in its center, closed by a float (22) on guides (21) when the chamber is full of water. A sieve (16) on the floor (14) of the chamber covers a small drain hole (15).

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Verhindern des Wassereintritts in einen Abwasserschacht nach dem Oberbegriff des Anspruchs 1. Derartige Vorrichtungen werden in der Abwasserwirtschaft verwendet und in belüftbare Abwasserschächte eingesetzt.The invention relates to a device for preventing the ingress of water a sewage shaft according to the preamble of claim 1. Such devices are used in wastewater management and in ventilated wastewater wells used.

Kanalisationsanlagen, insbesondere für verunreinigte Abwässer, sind belüftbar ausgeführt und besitzen daher in ihren Abwasserschächten entsprechende Lüftungsöffnungen. Über diese Lüftungsöffnungen findet ein ständiger Luftaustausch zwischen den Kanalgängen und der Atmosphäre statt. Der ständige Luftaustausch verhindert das Aufstauen von schädigenden und geruchsbelästigenden Gasen, wie Schwefelwasserstoff. Durch zu geringe Luftzirkulation kann es zur Erhöhung der Luftfeuchtigkeit im Schacht kommen, die bei Vorhandensein von Schwefelwasserstoff durch biochemische Vorgänge zur Schwefelsäurebildung führt. Schwefelsäure wirkt stark aggressiv und korrosiv auf Beton- und Metallteile im Schacht, die extreme Beschädigungen im Kanalnetz hervorruft. Dieser Luftaustausch sorgt dafür, dass den für die Säurebildung verantwortlichen Mikroorganismen die Lebensgrundlage eingeschränkt wird.
Durch diese Lüftungsöffnungen in den Schachtabdeckungen gelangt aber auch Oberflächenwasser in die Kanalisation und das hat Nachteile. Es gibt hydraulische Probleme bei der Abführung des eingedrungenen Oberflächenwassers, insbesondere bei schweren Niederschlägen, weil weder die Kanalquerschnitte noch die Kapazitäten der Pump- und Klärwerke auf die Bewältigung großer Wassermengen ausgelegt sind. Zudem werden heute vielfach getrennte Kanalisationsanlagen verwendet, bei denen verunreinigtes Abwasser getrennt von dem Oberflächenwasser transportiert und in der Kläranlage behandelt wird.
Der Be- und Entlüftung solcher Kanalisationsanlagen einerseits und der Vermeidung des Eindringens von Oberflächenwasser in die Kanalisationsanlage andererseits kommt daher eine sehr große Bedeutung zu.
Sewer systems, especially for contaminated wastewater, are designed to be ventilated and therefore have appropriate ventilation openings in their sewer manholes. Through these vents, there is a constant exchange of air between the ducts and the atmosphere. The constant exchange of air prevents the accumulation of harmful and odorous gases, such as hydrogen sulfide. Too little air circulation can increase the air humidity in the shaft, which leads to the formation of sulfuric acid in the presence of hydrogen sulphide through biochemical processes. Sulfuric acid is highly aggressive and corrosive to concrete and metal parts in the shaft, causing extreme damage to the sewer system. This exchange of air ensures that the microorganisms responsible for acid formation are limited in their livelihood.
Through these vents in the manhole covers but also surface water enters the sewer and that has disadvantages. There are hydraulic problems in the discharge of the penetrated surface water, especially in heavy rainfall, because neither the channel cross sections nor the capacities of the pumping and sewage treatment plants are designed to handle large amounts of water. In addition, today segregated sewerage systems are often used in which contaminated wastewater is transported separately from the surface water and treated in the treatment plant.
The ventilation of such sewer systems on the one hand and the prevention of the ingress of surface water in the sewer system on the other hand is therefore very important.

Die WO 92/09753 stellt nun ein Einsatzteil für einen Schacht einer Kanalisationsanlage vor, das die Lüftungsöffnungen der Kanalabdeckungen bei starken Niederschlägen verschließt. Das Einsatzteil wird unterhalb der Schachtabdeckung positioniert und besteht aus einer den Schachtquerschnitt abdichtenden Wanne aus flüssigkeitsdichtem Material. Zur Luftzirkulation steht der Hohlraum der Wanne jedoch über mehrere, seitlich angeordnete Luftkanäle mit dem unterhalb der Wanne befindlichen Teil des Schachtes in Verbindung. Jedem Luftkanal ist ein schwimmfähiges Kugelelement zugeordnet, das von dem in der Wanne befindlichen Wasser getragen wird und das in Abhängigkeit vom Wasserstand den jeweiligen Luftkanal verschließt oder öffnet. Im Boden der Wanne befindet sich eine wasserabführende Drosselbohrung, über die in der Wanne befindliches Wasser direkt in den Abwasserschacht ablaufen kann. Dabei ist die Drosselbohrung in ihrem Querschnitt so ausgelegt, dass weniger Wasser abläuft, wie nachfließendes Oberflächenwasser hinzukommt. Damit reguliert sich bei Niederschlägen der Wasserstand in der Wanne und damit die Position des schwimmfähigen Kugelelementes. Bei einem niedrigen Wasserstand sind die Luftkanäle also geöffnet und die gasige Luft kann aus der Kanalisation austreten und bei einem hohen Wasserstand in der Wanne sind die Lüftungskanäle verschlossen und es kann kein Oberflächenwasser mehr in den Abwasserschacht eindringen.
Dieses Einsatzteil für einen Schacht hat aber Nachteile. So sind zunächst der fertigungstechnische Aufwand und damit die Herstellungskosten sehr hoch, weil für jeden Lüftungskanal ein schwimmfähiges Kugelelement erforderlich wird. Da in der Regel mehrere Lüftungskanale erforderlich sind, erhöht sich demnach auch die Anzahl der schwimmfähigen Kugelelemente, der entsprechenden Ventilsitze und der Ventilführungen.
Von wesentlichem Nachteil ist aber auch, dass mit dem eindringenden Oberflächenwasser erhebliche Mengen an Sand und Laub in die Wanne eindringen. Diese Verunreinigungen setzen sich zunächst auf dem Boden der Wanne ab und verstopfen die wasserabführende Drosselbohrung. Damit kann eindringendes Oberflächenwasser nicht abgeführt werden und die schwimmfähigen Kugelelemente verschließen die Lüftungskanäle bereits bei sehr geringen Niederschlägen. Damit wird die notwendige Luftzirkulation bereits zur Unzeit außer Funktion gesetzt.
Die auf dem Boden der Wanne abgelagerten Verunreinigungen werden aber auch durch das weiterhin einfallende Oberflächenwasser verwirbelt und gelangen damit auch in den Bereich der Lüftungskanäle und der Ventilsitze der schwimmfähigen Kugelelemente. Damit besteht die Gefahr von Funktionsstörungen und eines erhöhten Verschleißes. Funktionsstörungen können zum Beispiel ein ständiger Verschluss oder eine ständige Öffnung der Lüftungskanäle sein, die zu einer Unterbrechung der Luftzirkulation oder zu einem ungewollten Eintrag von Oberflächenwasser in die Kanalanlage fuhren. Der erhöhte Verschleiß verkürzt die Lebensdauer des Einsatzteiles.
Letztlich ist es auch möglich, dass soviel Sand und Laub in die Wanne eindringt, dass die schwimmfähigen Kugelelemente in ihrer Bewegungsfreiheit blockiert werden, sodass es zum ständigen Verschluss der Lüftungskanäle und damit zum Funktionsausfall kommt.
WO 92/09753 now presents an insert for a manhole of a sewerage system, which closes the ventilation openings of the sewer covers during heavy rainfall. The insert is positioned below the manhole cover and consists of a sump cross section sealing trough of liquid-tight material. For air circulation, however, the cavity of the tub is connected via a plurality of laterally arranged air ducts with the located below the tub part of the shaft in connection. Each air duct is associated with a buoyant ball element which is carried by the water located in the tub and which closes or opens the respective air duct depending on the water level. In the bottom of the tub there is a water-drainage bore, through which water in the tub can drain directly into the sewer manhole. In this case, the throttle bore is designed in its cross-section so that less water runs off, as nachfließendes surface water is added. This regulates the water level in the tub during rainfall and thus the position of the floatable ball element. At a low water level, the air ducts are thus opened and the gaseous air can escape from the sewer system and at a high water level in the tub, the ventilation ducts are closed and it can no longer penetrate surface water in the sewer manhole.
However, this insert for a manhole has disadvantages. Thus, first of all the technical production effort and thus the production costs are very high, because a buoyant ball element is required for each ventilation duct. As a rule, several ventilation ducts are required, therefore also increases the number of buoyant ball elements, the corresponding valve seats and the valve guides.
Of significant disadvantage is also that penetrate with the penetrating surface water significant amounts of sand and leaves in the tub. These impurities initially settle on the bottom of the tub and clog the water-removing throttle bore. Thus, penetrating surface water can not be dissipated and the buoyant ball elements close the ventilation ducts even at very low rainfall. Thus, the necessary air circulation is already inoperative at the wrong time.
The deposited on the bottom of the tub impurities are also swirled by the still incident surface water and thus reach also in the area of the ventilation ducts and the valve seats of buoyant ball elements. This creates the risk of malfunction and increased wear. Malfunctions can be, for example, a permanent closure or a permanent opening of the ventilation ducts, which leads to an interruption of the air circulation or to an unwanted entry of surface water into the duct system. The increased wear shortens the life of the insert.
Ultimately, it is also possible that so much sand and foliage penetrates into the tub, that the buoyant ball elements are blocked in their freedom of movement, so that it comes to the constant closure of the ventilation ducts and thus to functional failure.

Der Erfindung liegt daher die Aufgabe zu Grunde, ein gattungsmäßige Vorrichtung zum Steuern der Luftzirkulation in einem Abwasserschacht weiter zu entwickeln, die eine störungsfreie Funktionsfähigkeit garantiert und die einen geringen Herstellungsaufwand erfordert.
Diese Aufgabe wird durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Zweckdienliche Ausgestaltungen ergeben sich aus den Unteransprüchen 2 bis 4.
The invention is therefore based on the object to further develop a generic device for controlling the air circulation in a sewer manhole, which guarantees a trouble-free functioning and which requires a low production cost.
This object is solved by the characterizing features of claim 1. Expedient refinements emerge from the subclaims 2 to 4.

Die erfindungsgemäße Vorrichtung zum Steuern der Luftzirkulation in einem Abwasserschacht beseitigt die genannten Nachteile des Standes der Technik.
Dabei ist von besonderem Vorteil, dass für alle seitlichen Luftöffnungen der Ventileinheit nur ein zentrales Ventilelement erforderlich ist. Das erspart hohe Herstellungskosten.
Von wesentlichem Vorteil ist aber die Abscheidung von Laub und Sand aus dem eindringenden Oberflächenwasser. Dabei ist es besonders effektiv, wenn sich das Laub und der Sand an einem ersten Rückhaltesteg im Laub- und Sandfang und an einem zweiten Rückhaltesteg an der Durchlassöffnung zur geschlossenen Ventileinheit ablagert. Damit kommt von groben Verunreinigungen befreites Oberflächenwasser in die geschlossene Ventileinheit. Das erhöht zusätzlich die Funktionssicherheit der Ventileinheit, weil die Drosselöffnung in der Bodenwand nicht mehr verstopfen kann und die Ventilelemente nicht mehr in ihrer Bewegungsfreiheit behindert werden.
The inventive device for controlling the air circulation in a sewer manhole eliminates the disadvantages of the prior art.
It is of particular advantage that only one central valve element is required for all lateral air openings of the valve unit. This saves high production costs.
Of significant advantage, however, is the separation of leaves and sand from the penetrating surface water. It is particularly effective if the foliage and the sand deposited on a first retaining web in the leaf and sand trap and on a second retaining web at the passage to the closed valve unit. This is surface water freed from coarse impurities in the closed valve unit. This also increases the reliability of the valve unit, because the throttle opening in the bottom wall can no longer clog and the valve elements are no longer hindered in their freedom of movement.

Die Erfindung soll anhand eines Ausführungsbeispiels näher erläutert werden.
Dazu zeigen:

Fig. 1
eine schematische Darstellung einer Vorrichtung zum Steuern der Luftzirkulation in einem Abwasserschacht in einer ersten Ausführungsform im Schnitt,
Fig. 2
eine schematische Darstellung der Fig. 1 im Längsschnitt,
Fig. 3
eine schematische Darstellung eines vergrößerten Ausschnitts der Fig. 2,
Fig. 4
eine schematische Darstellung einer Vorrichtung zum Steuern der Luftzirkulation in einem Abwasserschacht in einer zweiten Ausführungsform als vergrößerter Ersatzausschnitts der Fig. 2,
Fig. 5
eine schematische Darstellung einer Vorrichtung zum Steuern der Luftzirkulation in einem Abwasserschacht in einer dritten Ausführungsform im Schnitt,
Fig. 6
eine schematische Darstellung einer Vorrichtung zum Steuern der Luftzirkulation in einem Abwasserschacht in einer vierten Ausführungsform im Schnitt.
The invention will be explained in more detail with reference to an embodiment.
To show:
Fig. 1
a schematic representation of an apparatus for controlling the air circulation in a sewer manhole in a first embodiment in section,
Fig. 2
a schematic representation of FIG. 1 in longitudinal section,
Fig. 3
2 is a schematic representation of an enlarged detail of FIG. 2,
Fig. 4
2 is a schematic representation of a device for controlling the air circulation in a sewer manhole in a second embodiment as an enlarged replacement section of FIG. 2, FIG.
Fig. 5
a schematic representation of an apparatus for controlling the air circulation in a sewer manhole in a third embodiment in section,
Fig. 6
a schematic representation of an apparatus for controlling the air circulation in a sewer manhole in a fourth embodiment in section.

Nach den Fig. 1, 2, 5 und 6 ist die neue Vorrichtung im Inneren eines vertikalen Abwasserschachtes 1 angeordnet und durch eine den Abwasserschacht 1 verschließende Schachtabdeckung 2 abgedeckt. In der Schachtabdeckung 2 befinden sich mehrere gleichmäßig auf einem Teilkreis angeordnete Lüftungsöffnungen 3. Die Vorrichtung ist unterhalb der Schachtabdeckung 2 in den Abwasserschacht 1 eingesetzt und besteht aus einem Laub- und Sandfang 4, einer Dichtplatte 5 und einer Ventileinheit 6.1, 2, 5 and 6, the new device is inside a vertical sewer manhole 1 arranged and closing the sewage shaft 1 Manhole cover 2 covered. In the manhole cover 2 are several evenly arranged on a pitch circle ventilation holes 3. The device is inserted below the manhole cover 2 in the sewer manhole 1 and consists of a leaf and sand trap 4, a sealing plate 5 and a valve unit. 6

Der Laub- und Sandfang 4 ist wannenartig ausgebildet und mit seiner offenen Seite der Schachtabdeckung 2 zugewandt. Dabei besitzt der Sand- und Laubfang 4 eine radiale Ausdehnung, mit der alle Lüftungsöffnungen 3 in der Schachtabdeckung 2 erfasst werden. Der wannenartige Laub- und Sandfang 4 ist bodenseitig geschlossen und besitzt in seiner Wandung mehrere gleichmäßig beabstandete Überströmöffnungen 7. Dabei sind die Überströmöffnungen 7 in der Höhe so angeordnet, dass oberhalb des Bodens des Laub- und Sandfanges 4 ein umlaufender Rückhaltesteg 8 verbleibt.
Die Dichtplatte 5 ist wagerecht angeordnet, über mehrere Haltelemente 9 im Abwasserschacht 1 befestigt und trägt außen umfänglich einen mittels eines nicht dargestellten Spannrings befestigten Dichtring 10. Dieser Dichtring 10 ist dabei als ein Kunststoffschlauch ausgeführt, in dessen Inneren eine stabilisierende und aussteifende Füllung eingebracht ist. Als Füllung können beispielsweise elastische Kunststoffprofile oder eine Vielzahl von granulatähnlichen Teilchen verwendet werden. Durch Form, Größe und Material dieser Profile oder Teilchen kann der Dichtring 10 optimiert werden. Damit ist an dieser Stelle der Abwasserschacht 1 gasdicht nach außen abgedichtet.
Die Dichtplatte 5 besitzt weiterhin eine mittig angeordnete Durchlassöffnung 11, deren Lüftungsquerschnitt der Summe der Öffnungen in der Schachtabdeckung 2 und dem Laub- und Sandfang 4 entspricht. Diese Durchlassöffnung 11 ist als Rohrstutzen ausgeführt, der mit der Unterseite der Dichtungsplatte 5 bündig abschließt und der die Dichtplatte 5 nach oben überragt. Damit bildet sich auch in der Dichtplatte 5 ein Rückhaltesteg 12 aus.
The leaf and sand trap 4 is formed like a trough and facing with its open side of the manhole cover 2. The sand and leaf catcher 4 has a radial extent, with which all ventilation openings 3 in the manhole cover 2 are detected. The trough-like deciduous and sand trap 4 is closed at the bottom and has in its wall a plurality of uniformly spaced overflow openings 7. The overflow 7 are arranged in height so that above the bottom of the leaf and sand trap 4 a circumferential retaining web 8 remains.
The sealing plate 5 is arranged wagerecht, attached via a plurality of retaining elements 9 in the sewer manhole 1 and carries the outer circumference of a fastened by means of a clamping ring, not shown sealing ring 10. This sealing ring 10 is designed as a plastic tube inside which a stabilizing and stiffening filling is introduced. As the filling, for example, elastic plastic profiles or a variety of granule-like particles can be used. Due to the shape, size and material of these profiles or particles, the sealing ring 10 can be optimized. Thus, the sewer manhole 1 is sealed gas-tight to the outside at this point.
The sealing plate 5 further has a centrally disposed passage opening 11, the ventilation cross-section of the sum of the openings in the manhole cover 2 and the leaf and sand trap 4 corresponds. This passage opening 11 is designed as a pipe socket which is flush with the underside of the sealing plate 5 and which projects beyond the sealing plate 5 upwards. Thus, a retaining web 12 is formed in the sealing plate 5.

Die Ventileinheit 6 ist unterhalb der Durchlassöffnung 11 der Dichtplatte 5 angeordnet und an der Dichtplatte 5 befestigt. Zur Ventileinheit 6 gehört ein trogförmiges Ventilgehäuse 13, das in seiner radialen Ausdehnung einen für eine Luftzirkulation ausreichenden Abstand zur Innenwand des Abwasserschachtes 1 aufweist.
Das Ventilgehäuse 13 besitzt eine vorzugsweise aufgeschraubte Bodenwand 14 mit einer Drosselöffnung 15. Diese Drosselöffnung 15 ist auf der Innenseite des Ventilgehäuses 13 durch ein konvex gewölbtes Siebteil 16 abgedeckt.
Im oberen Drittel des Ventilgehäuses 13 befinden sich zwei gegenüberliegende Luftöffnungen 17, die über ein Lüftungsrohr 18 miteinander verbunden sind. Dabei durchdringt das Lüftungsrohr 18 den Innenraum des Ventilgehäuses 13. Das Lüftungsrohr 18 ist im Querschnitt rund oder prismatisch ausgeführt und besitzt an seiner Unterseite eine Ventilöffnung 19. Dieser Ventilöffnung 19 ist ein schwimmfähiges Ventilelement 20 zugeordnet, das unterhalb der Ventilöffnung 19 angeordnet ist.
Wie die Fig. 3 zeigt, wird dieses Ventilelement 20 von Führungsstäben 21 in seiner Position gehalten und geführt. Zum Ventilelement 20 gehört ein Schwimmkörper 22 und einem Dichtungselement 23, wobei das Dichtungselement 23 der Ventilöffnung 19 zugewandt ist und in der Form und der Größe auf die Ventilöffnung 19 abgestimmt ist. Die Länge der Führungsstäbe 21 für das Ventilelement 20 ist dabei so gewählt, dass der Schwimmkörper 22 sich jedem Wasserstand in dem Ventilgehäuse 13 anpassen kann.
The valve unit 6 is arranged below the passage opening 11 of the sealing plate 5 and secured to the sealing plate 5. To the valve unit 6 includes a trough-shaped valve housing 13, which has a sufficient for air circulation distance to the inner wall of the sewer manhole 1 in its radial extent.
The valve housing 13 has a preferably screwed-on bottom wall 14 with a throttle opening 15. This throttle opening 15 is covered on the inside of the valve housing 13 by a convexly curved screen member 16.
In the upper third of the valve housing 13 are two opposite air openings 17, which are connected to each other via a vent pipe 18. In this case, the ventilation pipe 18 penetrates the interior of the valve housing 13. The ventilation pipe 18 is round or prismatic in cross-section and has on its underside a valve opening 19. This valve opening 19 is associated with a buoyant valve element 20 which is disposed below the valve opening 19.
As shown in FIG. 3, this valve element 20 is held and guided by guide rods 21 in its position. The valve element 20 includes a floating body 22 and a sealing element 23, wherein the sealing element 23 faces the valve opening 19 and is matched in shape and size to the valve opening 19. The length of the guide rods 21 for the valve element 20 is chosen so that the float 22 can adapt to any water level in the valve housing 13.

Gemäß der Fig. 4 ist das Ventilelement 20 in einer zweckmäßigen Ausführung durch ein seitlich angeschlagenes Scharnier 24 am Lüftungsrohr 18 befestigt. Damit schwenkt das Ventilelement 20, getragen von den Auftriebskräften des im Ventilgehäuse 13 befmdlichen Wassers, um die Achse des Scharniers 24 in Richtung der Ventilöffnung 19 des Lüftungsrohres 18.According to Fig. 4, the valve element 20 in an expedient embodiment a laterally hinged hinge 24 attached to the vent pipe 18. With it swings the valve element 20, supported by the buoyancy forces of the valve housing 13 in the befmdlichen Water around the axis of the hinge 24 in the direction of the valve opening 19th the ventilation pipe 18.

In einer weiteren zweckmäßigen Ausführung der Vorrichtung nach der Fig. 5 besitzt das Ventilgehäuse 13 lediglich eine Luftöffnung 17 und das Lüftungsrohr 18 ragt in das Innere des Ventilgehäuses 13 hinein. Dabei ist das freie Ende des Lüftungsrohres 18 mit einem Gehrungsschnitt versehen, sodass der obere Teil des Lüftungsrohres 18 weiter als der untere Teil des Lüftungsrohres 18 in das Ventilgehäuse 13 hineinragt. Dieser Gehrungsschnitt bildet die Ventilöffnung 19 aus. An dem oberen Ende des Lüftungsrohres 18 ist wiederum das Scharnier 24 angeschlagen, das das schwimmfähige Ventilelement 20 trägt. Dabei ist der Anschlagpunkt des schwimmfähigen Ventilelementes 20 so gewählt, dass das Ventilelement 20, getragen von den Auftriebskräften des Wassers, in Richtung der Ventilöffnung 19 schwenkbar ist.In a further advantageous embodiment of the device according to FIG. 5 has the Valve housing 13 only an air opening 17 and the vent pipe 18 protrudes into the Interior of the valve housing 13 inside. Here, the free end of the vent pipe 18 with a miter cut, so that the upper part of the vent pipe 18 continues as the lower part of the ventilation tube 18 projects into the valve housing 13. This miter cut forms the valve opening 19. At the upper end of the ventilation pipe 18 again hinged 24, which is the buoyant valve element 20 carries. In this case, the attachment point of the buoyant valve element 20 is selected so that that the valve element 20, supported by the buoyancy forces of the water, in Direction of the valve opening 19 is pivotable.

In einer weiteren zweckmäßigen Ausführung der Vorrichtung nach der Fig. 6 besitzt das Ventilgehäuse 13 wiederum zwei seitliche Luftöffnungen 17, die über ein den Innenraum des Ventilgehäuses 13 durchdringendes Lüftungsrohr 18 miteinander verbunden sind. An der Unterseite des Lüftungsrohres 18 befindet sich wiederum die Ventilöffnung 19 mit einem Dichtungsring 25 aus einem Weichmaterial. Unterhalb dieser Ventilöffnung 19 ist ein Haltekorb 26 für eine schwimmfähige Ventilkugel 27 angeordnet. Dieser Haltekorb 26 besitzt Führungseigenschaften, sodass die Ventilkugel 27 zwischen seiner Offenstellung und seiner Schließstellung eine Zwangsführung erfährt.In a further expedient embodiment of the device according to FIG. 6 has the Valve housing 13, in turn, two lateral air openings 17, which via a the interior the valve housing 13 penetrating vent pipe 18 connected to each other are. On the underside of the vent pipe 18 is again the valve opening 19 with a sealing ring 25 made of a soft material. Below this valve opening 19, a holding basket 26 for a buoyant valve ball 27 is arranged. This holding basket 26 has guide properties, so that the valve ball 27 between its open position and its closed position experiences a forced guidance.

Die Funktion der neuen Vorrichtung zum Verhindern des Wassereintritts in einem Abwasserschacht ergibt sich bereits aus den beiliegenden Figuren.
Danach befindet sich zunächst kein Wasser in der Ventileinheit 6. Die Luftzirkulation zwischen dem Inneren des Abwasserschachtes 1 und der Atmosphäre außerhalb des Abwasserschachtes 1 erfolgt über die Lüftungsöffnungen 3 in der Schachtabdeckung 2, über die Überströmöffnungen 7 im Laub- und Sandfang 4, über die Durchlassöffnung 11 in der Dichtplatte 5 sowie über die offene Ventilöffnung 19 und den seitlichen Luftöffnungen 17 in der Ventileinheit 6.
Bei einem Regenereignis dringt nun Oberflächenwasser zusammen mit Sand und Laub durch die Lüftungsöffnungen 3 der Schachtabdeckung 2 zunächst in den Laub- und Sandfang 4 ein. Dabei lagern sich der Sand und das Laub weitgehend im Laub- und Sandfang 4 ab und das Wasser läuft dann weiter durch die Überströmöffnungen 7 auf die Dichtplatte 5. Von hier aus läuft das Wasser durch die Durchlassöffnung 11 der Dichtplatte 5 in das Ventilgehäuse 13 der Ventileinheit 6. Dabei verbleibt ein Rest an Laub und Sand auf dieser Dichtplatte 5, weil der Rückhaltesteg 12 eine Mitnahme von Laub und Sand verhindert. Aus dem Ventilgehäuse 13 der Ventileinheit 6 fließt das Wasser durch die Drosselöffnung 15 in der Bodenwand 14 in den Abwasserschacht 1. Diese Drosselöffnung 15 ist in ihrem Querschnitt so bemessen, dass weniger Wasser ablaufen kann, wie von oben nachfließt. Durch diese Drosselfunktion kommt es zum Ansteigen des Wasserspiegels, der bei einer vorbestimmten Höhe den Schwimmkörper 22 des Ventilelementes 20 erreicht. Mit dem Ansteigen des Wasserspiegels steigen auch die Schwimmkörper 22 auf, bis sie die Ventilöffnung 19 dichtend verschließen. Damit kann kein weiteres Oberflächenwasser in den Abwasserschacht 1 gelangen. Wenn kein neues Oberflächenwasser mehr nachläuft, entleert sich auch das Ventilgehäuse 13, weil das Wasser über die Drosselöffnung 15 abfließt. Mit dem Absinken des Wasserspiegels im Ventilgehäuse 13 sinkt auch der Schwimmkörper 22 und gibt die Ventilöffnung 19 wieder frei.
The function of the new device for preventing the ingress of water in a sewer manhole is already apparent from the accompanying figures.
Thereafter, there is initially no water in the valve unit 6. The air circulation between the interior of the sewer manhole 1 and the atmosphere outside the sewer manhole 1 via the ventilation openings 3 in the manhole cover 2, via the overflow 7 in the leaf and sand trap 4, via the passage opening 11 in the sealing plate 5 and the open valve opening 19 and the side air openings 17 in the valve unit. 6
In a rain event now penetrates surface water together with sand and leaves through the ventilation openings 3 of the manhole cover 2 first in the leaf and sand trap 4. In this case, the sand and the leaves largely stored in leaf and sand trap 4 and the water then continues through the overflow 7 on the sealing plate 5. From here, the water passes through the passage opening 11 of the sealing plate 5 in the valve housing 13 of the valve unit 6. This leaves a residue of leaves and sand on this sealing plate 5, because the retaining web 12 prevents entrainment of leaves and sand. From the valve housing 13 of the valve unit 6, the water flows through the throttle opening 15 in the bottom wall 14 in the sewer manhole 1. This throttle opening 15 is dimensioned in its cross section so that less water can drain, as flows from above. By this throttling function, it comes to the rise of the water level, which reaches the float 22 of the valve element 20 at a predetermined height. As the water level rises, the floats 22 also rise until they seal the valve opening 19 in a sealed manner. Thus, no more surface water can get into the sewer manhole 1. If no new surface water runs after, also the valve housing 13 is emptied, because the water flows off via the throttle opening 15. With the sinking of the water level in the valve housing 13, the float 22 also sinks and releases the valve opening 19 again.

Liste der BezugszeichenList of reference numbers

11
Abwasserschachtmanhole
22
Schachtabdeckungmanhole cover
33
Lüftungsöffnungvent
44
Laub- und SandfangLeaf and sand trap
55
Dichtplattesealing plate
66
Ventileinheitvalve unit
77
Überströmöffnungoverflow
88th
Rückhaltesteg im Laub- und SandfangRetaining ridge in leaf and sand trap
99
Halteelementretaining element
1010
Dichtringseal
1111
DurchlassöffnungPort
1212
Rückhaltesteg in der DichtplatteRetaining bar in the sealing plate
1313
Ventilgehäusevalve housing
1414
Bodenwandbottom wall
1515
Drosselöffnungthrottle opening
1616
Siebteilphloem
1717
Luftöffnungair opening
1818
Lüftungsrohrventilation pipe
1919
Ventilöffnungvalve opening
2020
Ventilelementvalve element
2121
Führungselementguide element
2222
Schwimmkörperfloat
2323
Dichtungselementsealing element
2424
Scharnierhinge
2525
Dichtringseal
2626
Haltekorbholding basket
2727
Ventilkugelvalve ball

Claims (8)

Vorrichtung zum Verhindern des Wassereintritts in einem Abwasserschacht, bestehend aus einer in den Abwasserschacht (1) eingehängten und einer gegenüber dem Abwasserschacht (1) abdichtenden Ventileinheit (6) mit einem geschlossenen Ventilgehäuse (13), wobei das Ventilgehäuse (13) eine obere Durchlassöffnung (11) für die Zirkulation der Luft und den Einlass von Wasser, eine untere Drosselöffnung (15) für den Auslass von angesammeltem Wasser sowie mindestens zwei obere und seitlich angeordnete Luftöffnungen (17) zur Zirkulation der Luft besitzt, wobei jede Luftöffnung (17) durch einen vom steigenden Wasserspiegel angetriebenen Schwimmkörper (22) verschließbar ist,
dadurch gekennzeichnet, dass der Ventileinheit (6) mindestens ein Laub- und Sandfang (4) vorgeschaltet ist und alle seitlichen Luftöffnungen (17) des Ventilgehäuses (13) durch ein, das Ventilgehäuse (13) durchdringendes Lüftungsrohr (18) miteinander verbunden sind und das Lüftungsrohr (18) eine zentrale Ventilöffnung (19) besitzt, die von einem zentralen Schwimmkörper (22) verschließbar ist.
Device for preventing the ingress of water in a sewer manhole, comprising a valve unit (6) suspended in the sewer manhole (1) and sealing against the sewer manhole (1), with a closed valve housing (13), the valve housing (13) having an upper passage opening (13). 11) for the circulation of the air and the inlet of water, a lower orifice (15) for the outlet of accumulated water, and at least two upper and laterally disposed air orifices (17) for circulating the air, each air orifice (17) passing through one Float (22) driven by the rising water level can be closed,
characterized in that the valve unit (6) at least one deciduous and sand trap (4) is connected upstream and all lateral air openings (17) of the valve housing (13) by a, the valve housing (13) penetrating vent pipe (18) are interconnected and Ventilation pipe (18) has a central valve opening (19) which is closable by a central floating body (22).
Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass der zentrale Schwimmkörper (22) als Flachkörper ausgeführt und mit einem Dichtungselement (23) aus Weichgummi bestückt ist, wobei der Schwimmkörper (22) von mindestens zwei stabähnlichen Führungselementen (21) geführt wird und die Führungselemente (21) eine sich über den ganzen Hub des Schwimmkörpers (22) erstreckende Länge besitzen.
Device according to claim 1,
characterized in that the central floating body (22) is designed as a flat body and equipped with a sealing element (23) made of soft rubber, wherein the floating body (22) of at least two rod-like guide elements (21) is guided and the guide elements (21) over have the entire stroke of the float (22) extending length.
Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass der zentrale Schwimmkörper (22) als Flachkörper ausgeführt und mit einem Dichtungselement (23) aus einem Weichgummi bestückt ist, wobei der Schwimmkörper (22) so von einem seitlich angeordnetes Scharnier(24) gehalten wird, dass sich der Schwimmkörper (22) bei einem ansteigenden Wasserspiegel in Richtung der Ventilöffnung (19) des Lüftungsrohres (18) verschwenkt.
Device according to claim 1,
characterized in that the central floating body (22) is designed as a flat body and equipped with a sealing element (23) made of a soft rubber, wherein the floating body (22) is held by a laterally arranged hinge (24), that the float (22 ) pivoted in a rising water level in the direction of the valve opening (19) of the ventilation tube (18).
Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass jede seitliche Luftöffnung (17) des Ventilgehäuses (13) ein in das Innere des Ventilgehäuse (13) ragendes Lüftungsrohr (18) mit einer Gehrung mit einer oben liegenden Spitze besitzt und die Gehrungsöffnung durch den Schwimmkörper (22) verschließbar ist, wobei der Schwimmkörper (22) mit dem Scharnier (24) in Richtung der Gehrungsöffnung schwenkbar ist.
Device according to claim 1,
characterized in that each lateral air opening (17) of the valve housing (13) has a vent pipe (18) projecting into the interior of the valve housing (13) with a miter with an overhead tip and the miter opening is closable by the float (22), wherein the float (22) with the hinge (24) is pivotable in the direction of the miter opening.
Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass in der zentralen Ventilöffnung (19) ein Dichtring (25) aus einem Weichgummi eingesetzt ist und der zentrale Schwimmkörper (22) eine Ventilkugel (27) ist und die Ventilkugel (27) von einem Haltekorb (26) umgeben ist.
Device according to claim 1,
characterized in that in the central valve opening (19) a sealing ring (25) is inserted from a soft rubber and the central float (22) is a valve ball (27) and the valve ball (27) by a holding basket (26) is surrounded.
Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass der Laub- und Sandfang (4) wannenartig ausgebildet ist und seitliche Überströmöffnungen (7) in einer solchen Höhe besitzen, dass sich ein Rückhaltesteg (8) für das Laub und den Sand ausbildet.
Device according to claim 1,
characterized in that the deciduous and sand trap (4) is formed trough-like and have lateral overflow openings (7) in such a height that forms a retaining web (8) for the foliage and the sand.
Vorrichtung nach Anspruch 6,
dadurch gekennzeichnet, dass die obere Durchlassöffnung (11) des Ventilgehäuses (13) einen herausragenden Überstand besitzt und so einen weiteren Rückhaltesteg (12) für das Laub und den Sand ausbildet.
Device according to claim 6,
characterized in that the upper passage opening (11) of the valve housing (13) has a protruding projection and thus forms a further retaining web (12) for the foliage and the sand.
Vorrichtung nach Anspruch 1,
dadurch gekennzeichnet, dass vor der Drosselöffnung (15) ein konvex gewölbtes Siebteil (16) angeordnet ist.
Device according to claim 1,
characterized in that in front of the throttle opening (15) a convexly curved screen member (16) is arranged.
EP04026935A 2003-12-23 2004-11-12 Device for preventing water entering a manhole shaft Not-in-force EP1548193B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10361532 2003-12-23
DE10361532A DE10361532B3 (en) 2003-12-23 2003-12-23 Control valve with sand and leaf trap for drain in street or roadway has air access openings in sides of housing and float closing air valve when valve chamber is full of water

Publications (3)

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EP1548193A2 true EP1548193A2 (en) 2005-06-29
EP1548193A3 EP1548193A3 (en) 2006-06-07
EP1548193B1 EP1548193B1 (en) 2009-01-14

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ID=34353512

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Country Status (4)

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EP (1) EP1548193B1 (en)
AT (1) ATE421005T1 (en)
DE (2) DE10361532B3 (en)
ES (1) ES2320445T3 (en)

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CN105256877A (en) * 2015-10-30 2016-01-20 上海市政工程设计研究总院(集团)有限公司 Drop device, rainwater collecting system and exhaust method of rainwater collecting system
CN106638911A (en) * 2016-10-20 2017-05-10 翟立春 Floor drain cover and odor-resistant floor drain
CN110984337A (en) * 2019-10-28 2020-04-10 中国一冶集团有限公司 Municipal drainage pipeline filtration

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DE102005052953B4 (en) * 2005-11-03 2010-06-17 Axel Bohatsch Device for measuring the flow of liquids at inlets in a sewer manhole and method for determining the inlet quantities in a sewer network
CA2751144A1 (en) 2011-08-26 2013-02-26 Francois Perron Interactive monitoring system for at least one of the intrinsic characteristics of fumes, fabrication process of the system and corresponding monitoring systems
CN110424522B (en) * 2019-08-07 2020-12-18 顾林妹 Floor drain capable of rapidly supplying water
CN112196060B (en) * 2020-09-09 2021-05-04 兰州理工大学 Pollution discharge falling flow vertical shaft structure based on internal circulation airflow pipe and use method thereof

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Publication number Priority date Publication date Assignee Title
CN105256877A (en) * 2015-10-30 2016-01-20 上海市政工程设计研究总院(集团)有限公司 Drop device, rainwater collecting system and exhaust method of rainwater collecting system
CN106638911A (en) * 2016-10-20 2017-05-10 翟立春 Floor drain cover and odor-resistant floor drain
CN110984337A (en) * 2019-10-28 2020-04-10 中国一冶集团有限公司 Municipal drainage pipeline filtration

Also Published As

Publication number Publication date
DE10361532B3 (en) 2005-04-21
ATE421005T1 (en) 2009-01-15
ES2320445T3 (en) 2009-05-22
DE502004008862D1 (en) 2009-03-05
EP1548193B1 (en) 2009-01-14
EP1548193A3 (en) 2006-06-07

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