EP2221422A1 - Récipient de collecte pour installations de relèvement d'eaux usées - Google Patents

Récipient de collecte pour installations de relèvement d'eaux usées Download PDF

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Publication number
EP2221422A1
EP2221422A1 EP09002492A EP09002492A EP2221422A1 EP 2221422 A1 EP2221422 A1 EP 2221422A1 EP 09002492 A EP09002492 A EP 09002492A EP 09002492 A EP09002492 A EP 09002492A EP 2221422 A1 EP2221422 A1 EP 2221422A1
Authority
EP
European Patent Office
Prior art keywords
container
inclined surface
collecting container
container according
side wall
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP09002492A
Other languages
German (de)
English (en)
Inventor
Ralf Schomäcker
Hennig Jürges
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Grundfos Management AS
Original Assignee
Grundfos Management AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Grundfos Management AS filed Critical Grundfos Management AS
Priority to EP09002492A priority Critical patent/EP2221422A1/fr
Publication of EP2221422A1 publication Critical patent/EP2221422A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F11/00—Cesspools
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/22—Adaptations of pumping plants for lifting sewage

Definitions

  • the invention relates to a collecting container for a wastewater lifting plant according to the features specified in the preamble of claim 1.
  • Wastewater lifting systems are in different versions of the prior art and are typically used to below a backpressure level spaces in which wastewater is obtained, for example, from toilets, sinks, showers and the like in terms of wastewater to dispose of.
  • sewage lifting plants serve to promote wastewater from a low to a higher level.
  • the types differ. All have in common a collecting container in which first the wastewater is collected and from which it is then conveyed by means of a centrifugal pump to a higher level.
  • the pump or pumps are mounted on the top of the reservoir, on a downwardly displaced reservoir stage, the pump is typically laterally flanged to the reservoir in the area of a sewage outlet located there near the larger sewage lifting units Ground.
  • the feed pump is then arranged next to the container.
  • the typically plastic collecting tank has on its upper side and / or a side wall, one or more waste water inlet openings, through which the wastewater passes into the collecting container.
  • the container bottom of the collecting container is formed so that it forms at least part of the base, typically a large part of the base, since this Otherwise it would have to be structurally stiffened when the container is filled in order to be able to support the weight of the wastewater bearing it unsupported.
  • a disadvantage of known collecting containers of the type mentioned is that deposit solids on the ground. Often, a mud / silt layer is formed, which is not naturally removed, that is, in normal operation of the plant, and over time grows until the plant malfunctions. Such collection containers are therefore typically from time to time to be cleaned by manual intervention, which is expensive, since such collection containers are typically formed in one piece, that is, a cleaning must be done through the existing openings.
  • the invention is based on the object to improve a generic collecting container, in particular to the effect that a sludge of the container bottom or deposits thereon is prevented or at least reduced.
  • the collecting container according to the invention for a wastewater lifting plant has at least one wastewater inlet opening in the upper side or in a side wall or in both. In addition, it has at least one waste water outlet opening in a side wall, which is provided and designed to connect a delivery pump to be arranged next to the container.
  • the collecting container according to the invention has a container bottom which forms at least part of the standing surface of the container forms. According to the invention, a sloping surface extending in the course thereof is formed in the container bottom and the waste water outlet opening is connected to a pipe section which extends from the waste water outlet opening into the container interior and substantially in the lower outlet region of the inclined surface or in the adjoining bottom region at a distance from the container bottom opens downwards.
  • the basic idea of the collecting container according to the invention is thus to form an inclined surface within the container bottom, advantageously through the container bottom itself or optionally through an insert or a corresponding Anformung on the actual container bottom.
  • This inclined surface which lifts off in its course relative to the container bottom or vice versa drops down to this, in conjunction with the pipe section and its arrangement in the container interior ensures that sediment flow and gravity due in the intake of the pipe section or arrangement of several Abwasserauslassötechnisch the pipe sections is guided and thus sucked together with the wastewater through the pipe section and discharged from the container.
  • such a pipe section is designed and arranged so that it connects to the inside of the container to the Abwasserauslassö réelle and extends into the container interior and opens in the lower outlet region of the inclined surface or in the adjoining bottom region at a distance to the container bottom directed substantially downwards.
  • the distance is expediently chosen so that, on the one hand, sufficient clearance for the passage of particles is formed, on the other hand, the highest possible flow velocity is formed in this region, so that the sinking particles are conveyed out of the container by the liquid flow. Since the Abwasserauslassö réelle is in the side wall, the adjoining pipe section is typically formed as an angle.
  • the pipe section opens downwards, which means in the context of the invention that the imaginary longitudinal axis of this pipe section in the outlet region downwards or at least also downwards, that is directed obliquely downwards.
  • the mouth of the pipe section is arranged in the outlet region next to the inclined surface, specifically where the oblique surface merges into the container bottom forming the contact surface of the container. Then the sediments pass through the waste water inlet or waste water inlet either directly into the bottom area where due to the mouth of the pipe section an increased flow takes place or in the region of the inclined surface, where already gravitationally a slide-like promotion to the mouth region of the pipe section or the pipe sections takes place.
  • Oblique surface in the sense of the present invention does not necessarily have to be a flat oblique surface, it may also be a curved inclined surface, be it a single or multiaxial curved surface.
  • an inclined surface may be formed by a section of a cylinder jacket or a cone jacket.
  • the inclined surface does not necessarily have to be a contiguous surface; according to the invention it can also consist of partial surfaces which are separated from each other by the structure of the container bottom.
  • the pipe section or the pipe sections if the sump is provided for connection of two feed pumps, also directed in the mouth region obliquely to the longitudinal center plane of the container and to the opposite side wall, and advantageously at an angle between 15 ° and 25 ° to the direction down , that is in the installed state to the vertical.
  • the oblique position thus takes place approximately in the direction of the center of the container bottom region, which also forms the contact surface of the container and into which the inclined surface opens. This measure is used in particular to concentrate the flow out of the center of the container. If a pipe section is provided centrally in a side wall, then this inclination can be omitted to the longitudinal center plane, otherwise it is advantageously carried out both to the longitudinal center plane of the container and to the opposite side wall.
  • the inclined surface extends from the container bottom in the region of the contact surface of the container up to a side wall, advantageously to the side wall, at which the inclined surface has its highest level.
  • Such an inclined surface expediently includes an angle of 10 ° to 30 ° with the base of the container, particularly advantageous slopes between 18 ° and 22 °.
  • the slanted surface should be as large as possible.
  • the beveled surface is sized to include at least 50% of the projected footprint of the container. Under projected footprint in the context of the present invention, the shaded area is to be understood, which results when the container floorstanding vertically illuminated from above with parallel and also vertical light rays.
  • the inclined surface is arranged so that it is disposed below the waste water inlet opening or in a sidewall arranged wastewater inlet opening below the mouth region, so that the sediment sink within the waste water on the inclined surface and there gravitational and optionally flow-assisted get into the intake of a pipe sections.
  • the inclined surface is formed by the container wall itself. In such an arrangement, however, constructive care must be taken that the container in the areas adjacent to the inclined surface is sufficiently rigid so that it can safely absorb the force acting on the inclined surface force.
  • rib-like stiffeners may be formed under the inclined surface, which support them.
  • the inclined surface may also be formed by a component incorporated into the container at the bottom, such component advantageously having a density of more than 2000 kg / m 2 to ensure that it does not float. Then can be dispensed with a separate attachment to the tank bottom.
  • the oblique surface defining side wall is advantageously arranged opposite the side wall, which has the Abwasserauslassö réelle or the Abwasserauslassö réelleen. In this way, the flow formed in the collecting tank by the feed pump / feed pumps is supported by the natural gravity along the inclined surface.
  • the waste water outlet opening of the container in the side wall is formed like a sleeve to receive a suction nozzle of a feed pump.
  • the typically juxtaposed waste water outlet openings are both formed like a sleeve.
  • Such a sleeve-like design compared to the usual flange has the advantage that the size of the sump can be reduced with attached pump, on the other hand, a comparatively soft, for example in cross-section U-shaped seal between the suction nozzle of the feed pump and the Abwasserauslassö réelle can be arranged, which also forms a very effective vibration damper between the pump and container, so that the vibrations generated by the pump transmitted much less to the container than in the known flange.
  • This development is basically also applicable independently of the inclined surface arrangement within the container.
  • the side wall delimiting the inclined surface at its upper end has at least outwardly a plane surface. This allows the individual attachment of one or more other waste water inlet openings, which are then arranged so that their mouth is arranged in the region of the underlying inclined surface. Due to the planar design of the surface can be done without drilling special tools a flange of pipes after drilling a corresponding opening.
  • the collecting container has two wastewater outlet openings for the connection of two feed pumps in the side wall, wherein each of these waste water outlet openings has an inwardly directed pipe section which preferably opens approximately in alignment with the lateral ends of the inclined surface.
  • the arrangement of two feed pumps is at collecting medium size is appropriate, on the one hand to produce a more intense and larger flow within the sump and thus promote larger amounts of wastewater, on the other hand to increase the reliability of the system.
  • the container bottom is formed in the areas between the lateral ends of the inclined surfaces and the adjacent thereto side walls as a base.
  • the inclined surface supported directly on the ground and stiffened the container bottom in itself, wherein in particular in the region of these stiffeners fastening portions may be provided for anchors, which are mounted in such containers against floating.
  • the container also has a fastening section for a floor anchor in the region between the waste water outlet openings, preferably this is arranged by molding the housing wall, which terminates in a base-side fastening section, within the housing contour. It suffice in the collecting container according to the invention three mounting portions to anchor this sufficiently on the ground, namely one in the area between the Abwasserauslassö réelleen and two in the opposite corners, where the container bottom is particularly stiff by the contact surfaces on the sides of the inclined surface.
  • FIGS. 1 to 9 illustrated collecting container for a sewage lifting plant has a substantially rectangular shape and is intended to set up and fixing on a flat horizontal surface 32, typically, for example, the basement floor 32 of a house and provided.
  • the following description refers to such a proper installation, for better understanding the in Fig. 1 forward facing wall as a front wall 1, the opposite wall facing away from it as a rear wall 2 and according to the illustration according to Fig. 1 the visible wall as the right side wall 3 and the opposite side facing away from it are referred to as the left side wall 4.
  • the collecting container is formed as a hollow body in one piece from plastic.
  • a part of its bottom 5 is formed as a base 6, with which the container is on the floor 32.
  • This base 6 extends from the rear wall 2 of the container over the entire width and over about 1/3 of the length of the container.
  • the container bottom 5 rises obliquely up to the front wall 1, whereby within the container an inclined surface 8 is formed, which forms an angle 9 of 20 ° with the horizontal.
  • This inclined surface 8 thus extends from the front wall 1 to the part of the container bottom 5, which forms the standing surface 6 beyond the line 7.
  • the inclined surface 8 does not extend over the entire container width but ends at a distance from the lateral side walls 3 and 4 and is there via inner wedge-shaped wall portions 10 connected to the container bottom 5, which is also formed in the region of the side walls 3, 4 as a base 6 .
  • the stability of the container, in particular the container bottom 5 is substantially increased compared to a planar design.
  • bottom fastening sections 11 are provided, on which the container can be secured by means of anchors in the floor 32, possibly to prevent it from floating upwards.
  • the collection container is molded in its lower half, which ensures that the anchors for attaching the container can not be arranged next to the container but within the actual container contour to save space.
  • results from these indentations 12 a particularly high stability of the container in this area.
  • Another attachment portion 11 is provided approximately in the middle where the rear wall 2 of the container abuts the bottom 5, too There, a recess 12 is provided so that the anchor can be arranged to save space within the container contour.
  • an approximately inverted T-shaped planer Front wall section 14 is not interrupted, which has a waste water inlet opening 15 near the top of the container.
  • the waste water inlet opening 15, which is arranged within the planar front wall section 14, opens into the container above the inclined surface 8, so that incoming wastewater comes up either on the inclined surface 18 depending on the flow velocity or in the plane 16 of the flat surface 16 lying behind it Floor 5.
  • the plane front wall portion 14 below the waste water inlet opening 15 is provided so that possibly further connections can be drilled on site and attached there, which is always problematic in non-planar side wall.
  • openings 17 are respectively aligned with each other in the area between the end of the inclined surface 8 and the rear wall 2 are provided, which extend directly to the bottom 5 and which are essentially intended that several such container juxtaposed with their side walls adjacent to each other and can be connected to each other via the openings 17.
  • a supply or discharge line for wastewater can be connected through these openings, when not in use, these openings are sealed by a blind plug.
  • the side walls 3 and 4 are each interrupted centrally through the groove 13 in its surface, wherein the located below the groove Part slightly oblique to the bottom 5 and the above the groove 13 located wall portion slightly inclined to the top of the container to run.
  • openings 18 are provided, which are arranged and formed so that they connect fluid side by side arrangement of such containers near the top. Into these openings 18 may optionally be connected inlet lines, but in principle these are not intended, but only to create a fluid connection between adjacent containers near the top. When using only one container, these openings 18 are typically also sealed by blind plugs.
  • inwardly projecting flat surfaces 19 are formed in the upper part of the side walls 3, 4 inwardly projecting flat surfaces 19 are formed in the upper part of the rear wall 2, two outwardly projecting flat surfaces 20 are provided.
  • plan surfaces 19, 20, each having the shape of a slot are, as the flat front wall portion for further processing and arrangement of sensors, displays and the like provided.
  • level sensors, sight glasses or the like can be arranged in this area, be it in the factory or possibly also on site.
  • This incorporation has the advantage that it is particularly space-saving, on the other hand, that due to the comparatively large-volume seal 30 between the inside of the collar 22 and the outside of the suction 31 of the pump 29, a high vibration damping between the pump 29 and container takes place otherwise as this is the case with flange connection.
  • the container is connected to the Abwasserauslassö réelle 21 and the collar 22 each have a pipe section 23 which is formed as a pipe bend, extending approximately over 70 ° angle of curvature and the inlet opening 24 at a distance above the planar region of the bottom 5 ends and substantially directed downwards.
  • the end of the pipe section 23 is not directed parallel to the flat portion 16 of the bottom 5, but approximately 20 ° obliquely thereto.
  • the inlet opening is also aligned at an angle 25, which is also 20 °, to an imaginary longitudinal center plane 26 of the container between the front and rear walls 1 and 2.
  • the pipe sections 23 are therefore directed substantially downwards, but slightly obliquely to the front wall 1 and to the imaginary vertical longitudinal center plane 26 out.
  • This orientation of the pipe sections 23 allows on the one hand a suction of the container via the connected feed pumps 29 almost to the bottom of the container, ie the flat area 16 and also promotes a near-ground flow within the container, which ensures that even on the floor. 5 deposited particles and solids are entrained with the flow and removed from the container. It thus forms in the operation of the system during the aspiration of the wastewater located within the collecting container in the plane Area 16 such an intense flow that also solids are largely sucked off and removed.
  • the slope of the inclined surface 18 ensures that such solids, even with comparatively low flow, slip off into the flat area 16, where they are carried along by the flow. This applies in particular to the solids which are introduced into the container via the waste water inlet opening 15, but also to those which are carried into the container by any openings introduced in the plane front wall section 14.

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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)
EP09002492A 2009-02-21 2009-02-21 Récipient de collecte pour installations de relèvement d'eaux usées Withdrawn EP2221422A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09002492A EP2221422A1 (fr) 2009-02-21 2009-02-21 Récipient de collecte pour installations de relèvement d'eaux usées

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09002492A EP2221422A1 (fr) 2009-02-21 2009-02-21 Récipient de collecte pour installations de relèvement d'eaux usées

Publications (1)

Publication Number Publication Date
EP2221422A1 true EP2221422A1 (fr) 2010-08-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09002492A Withdrawn EP2221422A1 (fr) 2009-02-21 2009-02-21 Récipient de collecte pour installations de relèvement d'eaux usées

Country Status (1)

Country Link
EP (1) EP2221422A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2489802A1 (fr) * 2011-02-16 2012-08-22 Grundfos Management a/s Installation de relèvement d'eaux usées
EP2505729A1 (fr) * 2011-03-29 2012-10-03 STRATE Technologie für Abwasser GmbH Installation de relèvement d'eaux usées
DE102015010510A1 (de) * 2015-08-12 2017-02-16 Wilo Se Abwassersammelbehälter für eine Abwasserhebeanlage
DE102015010512A1 (de) * 2015-08-12 2017-02-16 Wilo Se Abwassersammelbehälter für eine Abwasserhebeanlage
DE102015010509A1 (de) * 2015-08-12 2017-02-16 Wilo Se Abwassersammelbehälter für eine Abwasserhebeanlage

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3532007C1 (de) * 1985-09-07 1986-12-18 Albert 5204 Lohmar Blum Abwasserhebeanlage
US4948351A (en) * 1989-03-15 1990-08-14 Williams Richard Lee Pressure sewer pumping system with check valve arrangement
DE29505028U1 (de) * 1995-03-17 1995-07-27 Börner, Wolf-Dieter, 32457 Porta Westfalica Abwasserhebeanlage
US20060060685A1 (en) * 2004-09-17 2006-03-23 Crane Pumps Grinder pump system
EP1640510A1 (fr) * 2004-09-24 2006-03-29 Grundfos a/s Puits

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3532007C1 (de) * 1985-09-07 1986-12-18 Albert 5204 Lohmar Blum Abwasserhebeanlage
US4948351A (en) * 1989-03-15 1990-08-14 Williams Richard Lee Pressure sewer pumping system with check valve arrangement
DE29505028U1 (de) * 1995-03-17 1995-07-27 Börner, Wolf-Dieter, 32457 Porta Westfalica Abwasserhebeanlage
US20060060685A1 (en) * 2004-09-17 2006-03-23 Crane Pumps Grinder pump system
EP1640510A1 (fr) * 2004-09-24 2006-03-29 Grundfos a/s Puits

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2489802A1 (fr) * 2011-02-16 2012-08-22 Grundfos Management a/s Installation de relèvement d'eaux usées
CN102644318A (zh) * 2011-02-16 2012-08-22 格伦德福斯管理联合股份公司 废水提升装置
CN102644318B (zh) * 2011-02-16 2015-07-01 格伦德福斯管理联合股份公司 废水提升装置
RU2572489C2 (ru) * 2011-02-16 2016-01-10 Грундфос Менеджмент А/С Подъемная установка для сточных вод
EP2505729A1 (fr) * 2011-03-29 2012-10-03 STRATE Technologie für Abwasser GmbH Installation de relèvement d'eaux usées
DE102015010510A1 (de) * 2015-08-12 2017-02-16 Wilo Se Abwassersammelbehälter für eine Abwasserhebeanlage
DE102015010512A1 (de) * 2015-08-12 2017-02-16 Wilo Se Abwassersammelbehälter für eine Abwasserhebeanlage
DE102015010509A1 (de) * 2015-08-12 2017-02-16 Wilo Se Abwassersammelbehälter für eine Abwasserhebeanlage

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