EP1640510A1 - Puits - Google Patents

Puits Download PDF

Info

Publication number: EP1640510A1
Authority: EP; European Patent Office
Prior art keywords: housing; well; fountain according; housing portion; fountain
Prior art date: 2004-09-24
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.): Granted

Application number

EP04022867A

Other languages

German (de)

English (en)

Other versions

EP1640510B1 (fr

Inventor

Benny Isaksen

Klaus Lauridsen

Lars Vestergaard Nielsen

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 AS

Original Assignee

Grundfos 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.)

2004-09-24

Filing date

2004-09-24

Publication date

2006-03-29

2004-09-24 Application filed by Grundfos AS filed Critical Grundfos AS

2004-09-24 Priority to AT04022867T priority Critical patent/ATE404741T1/de

2004-09-24 Priority to DE502004007849T priority patent/DE502004007849D1/de

2004-09-24 Priority to PL04022867T priority patent/PL1640510T3/pl

2004-09-24 Priority to EP04022867A priority patent/EP1640510B1/fr

2006-03-29 Publication of EP1640510A1 publication Critical patent/EP1640510A1/fr

2008-08-13 Application granted granted Critical

2008-08-13 Publication of EP1640510B1 publication Critical patent/EP1640510B1/fr

2024-09-24 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Images

Classifications

- 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 well with the features specified in the preamble of claim 1.
Such wells are typically used as sewage wells, especially when height differences in the sewer pipe are to be overcome. Upon reaching a predetermined level height, the submersible pump located in the well and jumps the waste water collected in the well via a pressure line comparatively small cross-section.
Such wells can also be used to collect rainwater or other purposes. They typically consist of a plastic housing, which is formed in known wells substantially cylindrical. In this case, a lower portion of the plastic housing forms the future well sump and the adjoining up the middle housing section the later well shaft, which is usually closed at the top by a cover.
a disadvantage of wells known is that they collect comparatively much water due to their substantially cylindrical shape at the bottom, which can not be sucked by the pump design. Furthermore, it has been shown particularly in flood-prone areas that such wells, when they are pumped virtually empty, can float when the surrounding soil is sufficiently softened and enriched with water.
the invention has for its object to provide a generic well, which avoids the aforementioned disadvantages.
the well according to the invention is designed so that the lower housing portion is formed tapering towards the bottom, wherein the central housing portion is formed with respect to the adjoining part of the lower housing portion to spring back inside.
This design has the great advantage that, on the one hand, in comparison to the well shaft, a large volume is formed in the lower housing section, which, however, can be almost completely pumped off due to the housing tapering towards the bottom.
the residual volume remaining in the well is significantly smaller than in known designs, since due to the housing taper downwards, the free well cross-section and thus also the non-recoverable residual volume located there is significantly reduced.
an upper plastic housing section advantageously joins the middle housing section, which has an inspection opening on its upper side, which can be closed by means of a lid.
the well is accessible via the inspection opening, and all the units arranged within the well, in particular the submersible pump / submersible pumps and possibly the riser system connected thereto, are accessible via the inspection opening.
the housing wall of the lower housing section tapering towards the bottom. It is particularly advantageous to form the housing in this tapered region at an angle to the housing longitudinal axis between 30 ° and 60 ° in the installed position.
the upper housing portion at the outer edge of at least one receptacle for a sealant, for.
Such reinforcing rings made of concrete are state of the art and are standardized, which is why it is expedient to form the upper housing section so that a standardized concrete fountain ring on the outside of the well housing is sealingly attachable.
a plurality of sealing rings are provided one above the other, so that even when sagging the concrete fountain ring, as can be done for example by stress or Nachsacken the soil, the sealing contact is ensured at the well.
Such standardized concrete well rings typically have their own concrete fountain roof, so as to prevent water in between laterally between the well ring and the well the fountain can enter or exit, a seal is provided.
Such concrete well rings are typically used where increased loads are introduced at the top of the well, for example in the carriageway area or on squares where a particularly high load from above is to be expected from vehicles or other objects.
the upper housing portion in the region of the sealant receiving a larger diameter than the shaft portion forming the middle housing section has. Only then is it ensured that the concrete fountain ring, which bears sealingly against the upper housing section, is also freely movable downwards, that is to say may sag, without undesired forces being introduced into the well structure, in particular the plastic housing.
the well, z. B. if it is used without concrete fountain ring, has its own, preferably formed from plastic lid for closing the inspection opening. If necessary, such a cover can also be arranged under the concrete cover of the concrete fountain ring or replace a standardized concrete cover, which can likewise be incorporated in the inspection opening of the fountain. For concrete lids, the secure fit is usually ensured by its own weight.
clamping or locking means are provided on the lid side, which define the lid in the inspection opening and which are preferably designed so that they are only externally by means of a Tool are accessible so that not unauthorized, especially playing children can remove the lid.
the central housing portion is formed substantially cylindrical and has circumferential stiffening ribs, which are either provided on the housing or material saving preferably such that the housing itself is contoured rib-shaped, so as to ensure a high intrinsic stability with a comparatively small material thickness.
the housing is provided with support ribs, which extend from the oblique housing wall down to the contact surface of the well housing and thus increase the stability of the well.
support ribs are expediently formed integrally with the well housing and are preferably formed as a hollow body, which are not in line connection with the well interior.
a constriction is provided in the region of the housing wall, which causes a closed inner wall to be formed during the production of the housing in the rotational casting process.
the constriction may be formed such that the support ribs are indeed hollow, but with openings to the well interior, so that the ribs can fill with liquid, but essentially no fluid exchange takes place to the well out.
a plurality of support ribs distributed around the housing axis are arranged to ensure stability in all directions.
two staggered arranged by 180 ° to the housing longitudinal axis support ribs are provided, in particular if in the intervening areas by other embodiments of the housing in the bottom area care is taken that a corresponding support effect is given in these areas.
This can be achieved, for example, by forming a receptacle for the lower end of at least one riser system leading to a submersible pump in the region between two support ribs.
the housing is expediently designed in this area so that sufficient space remains for the riser system mounted vertically from above along the well wall, in particular the shaft wall, and a corresponding receptacle at the bottom End is provided.
This receptacle can also be provided for receiving two riser systems, if two pump units are provided.
the receptacle is advantageously designed so that the lower end of the riser system can be inserted from above into it in such a way that positive engagement is formed transversely to the longitudinal axis of the housing after insertion, ie the riser system is fixed with the lower end in the housing.
the housing On the opposite side, so also between two offset by 180 ° to each other arranged support ribs, the housing advantageously opposite to the receiving a bulge, which extends to the bottom of the housing.
This bulge also increases the stability to this side of the housing and gives the necessary space for the generally large-scale bottom suction port of the pump or pumps, if several are provided.
the bulge is suitably adapted to the outer contour of the pump in this area.
the riser system can be advantageously determined in the well according to the invention in the bottom-side receptacle of the housing by simply plugging in from above.
a guide for the riser system may be provided in the lower housing portion, which preferably has a guide rail attached to the housing, to which the riser system is movable only in the direction of the housing longitudinal axis.
Such a guide rail is advantageously made of stainless steel, but may also be formed of other materials. Both the bottom-side receptacle and the guide rail advantageously make it possible not only to pull the pump on the riser system, as is state-of-the-art, but also to remove the entire riser system from above the well in order to repair it if necessary or exchange.
the riser system at two points, preferably near the bottom and the upper end of the fountain side set to to ensure a stable connection to the well housing. On the bottom side, this is done by the recording and / or arranged in the lower housing section guide rail. Both systems are designed so that replacement without direct access to the well, but only through the inspection opening at the top can be done.
a flange connection is provided near the upper end of the well, which is arranged so that it is accessible from the inspection opening.
the flange provided with slots which are arranged so that their long axis is arranged parallel to the longitudinal axis of the housing, d. H. that the flanges can be bolted to each other with a certain height clearance, without this having any effect on the thus formed line connection or the strength of the flange connection.
the pipe mouths are formed slot-like in the flanges.
the flanges with the arcuate tubular sections opening into them are each produced in one piece as castings of preferably stainless steel.
the upper end of the riser system is attached via the flange to the pressure tube, which is releasably secured in the region between the housing passage and the flange on the housing, preferably screw-mounted.
the housing is reinforced in the attachment, to ensure a stable and rigid connection to the housing.
this attachment point in the housing is arranged so that they possible through the inspection opening is accessible from above, so that all located within the well components can be replaced through the inspection opening without having to get into the well.
the well housing at least on the inside has a light color
expediently the plastic forming the housing is of light color, so that even a low incidence of light is sufficient to allow an inspection of the inside of the well.
the well-known plastic housing wells are typically dark, which is a considerable disadvantage, since the well inside can be inspected by visual inspection only through intensive additional lighting.
the well housing according to the invention is advantageously formed in one piece and produced by rotational molding of plastic.
the well illustrated with reference to the figures consists of a one-piece plastic housing made of plastic by rotational casting, which is formed by a lower housing section 1, a middle housing section 2 and an upper housing section 3.
the lower housing section 1 forms the later pump sump of the well, the middle housing section 2 the well shaft and the upper housing section 3 a connection area for further below described components and an inspection opening 4, which is lockable by a cover 5.
the well housing is essentially rotationally symmetrical about a longitudinal axis 6 which is approximately vertical in the installed position.
the lower housing portion 1 has a cylindrical portion 7, which projects beyond the central housing portion 2 radially.
the cylindrical portion 7 goes down into a tapered portion 8, which extends to the bottom 9 of the well housing.
two support ribs 10 which are offset by 180 ° with respect to one another and are arranged on the axis 6 are provided, which are hollow and are formed integrally with the rest of the housing. These support ribs extend to the footprint of the well housing, stabilize the tapered portion 8 in the wall area and also form a particular support laterally to the bottom 9 to increase the footprint and thus the stability of the stand, especially when not yet installed.
a bulge 11 is provided on one side and on the other side a receptacle 12, also in the form of a paragraph, as can be seen in particular from FIGS. 1 and 2 can be seen.
Bulge 11 and receptacle 12 are arranged opposite one another and form, in particular Fig. 2 illustrates, also supports, which increase the footprint of the well housing.
the bulge 11 is provided to have sufficient clearance for lowering the submersible pump unit 13 shown with reference to FIGS. 4 and 5, whereas the receptacle 12 is provided for fixing the lower end of a riser system 14, as can be seen in particular with reference to FIG ,
the cylindrical section 7 In alignment with the receptacle 12, the cylindrical section 7 is retracted, such that a contact surface 15 extending essentially downwards therefrom of the middle housing section 2 is provided, which is provided on the inside of the well housing with a guide rail 16, which is also additionally or serves as an alternative to the lower attachment of the riser system 14.
the lower housing section 1 is adjoined at the top by the middle housing section 2, which forms the later well shaft and is essentially cylindrical, but has a significantly smaller diameter than the cylindrical section 7 of the lower housing section 1 and thus springs back relative thereto.
the middle housing portion 2 is formed ribbed in order to increase the stability.
the here inwardly directed ribs 17 are formed by a meandering in cross-section housing wall However, they can also be reinforced if necessary by additional components, such as reinforcing rings and / or directed to the outside.
the middle housing portion 2 goes up into the likewise cylindrical upper housing portion 1, which is, however, provided on its outer periphery with radially projecting rings 18, such that between two adjacent rings 18 each have a groove for receiving a circumferential rubber seal not shown here in detail is provided in the form of a sealing ring.
These rubber seals serve to tightly connect a standardized concrete fountain ring 19, as shown by way of example in FIG. 7.
the rings 18, as in particular also illustrated in FIG. 7, project radially relative to the middle housing section, such that the concrete fountain ring 19 is displaceable in the axial direction 6 of the well, that is to say also beyond the middle housing section 2.
the upper housing portion 3 runs at its top to the inspection opening 4 toward, which is stepped, such that the cover 5 is optionally inserted sealingly in this, without the risk that this may fall into the well inside.
the bolts themselves are rotatably mounted recessed from above, so that they are accessible and rotatable only with a special tool from the top of the lid ago.
the clamping bolts 21 are pivoted into the clamping bolt receptacles 22 provided in this area in the upper housing section 3, whereby the cover 5 is braced against the housing section 3 and positively locked is locked.
the inspection opening 4, which also forms the lid receptacle is designed so that instead of the plastic lid 5 and a standard metal / concrete lid can be used, as this also finds use in conventional wells.
the entire well housing is typically up to the lid 5 below the surface or possibly even the lid itself.
the top of the well is covered by a standard concrete fountain ring 19, which rests sealingly against the upper housing portion 3 , but otherwise freely movable in the direction of the longitudinal axis 6 of the well.
the concrete fountain ring 19 is provided on its upper side with a lid, not shown, and known as such, which is why not described in detail here.
a well known from the prior art riser system 14 is provided with which a submersible pump unit 13 can be discharged close to the bottom 9 of the well housing along the riser system 14 on a chain 23, which at the lower end automatically a fluid-conducting Making connection between the discharge nozzle of the pump assembly 13 and a riser pipe 24, which forms part of the riser system.
the riser 24 is connected in parallel to a guide rail 25 fixedly connected thereto, on which the pump unit 13 is guided.
the riser pipe 24 is bent at its upper end by 90 ° to a flange 26 which is provided for connection to an opposite flange 27 which is seated at the end of a pressure pipe 28, via which the pumped by the pump 13 liquid is discharged from the well ,
the flanges 26 and 27 have, as can be seen with reference to FIG. 6, elongated holes 29 whose longitudinal axis is arranged parallel to the longitudinal axis 6 of the well.
the line connections are also in this area formed slot-like, such that certain manufacturing tolerances in the direction of the axis 6 can be compensated, in which the flanges 26 and 27 not only aligned with each other, but to a certain extent in the direction of the axis 6 can be fixed to each other, without the To influence the functionality of the flange connection.
the riser system 14 As shown with reference to FIG. 4, held with its lower end in the form provided in the lower housing section 1 receptacle 12, after this has been introduced from above into the receptacle 12. Secured to the top is the riser system 14 by a clamp 30 which connects the pressure tube 28 via a screw with the well housing.
the riser system 14 may also be positively guided and fixed in the lower region on the guide rail 16 (FIG. 5), which is fastened to the contact surface 15 of the well housing, a securing against sliding upwards likewise takes place via the clamp fastening 30
Both embodiments have the advantage that the entire riser system after loosening the flange connection, which can be done from above through the inspection opening 4, removed from the well and maintained or possibly replaced.
a rod 31 is provided, to which various float switches 32 are attached, via which the pump control is activated and the level within the well can be determined.
the rod 31 is fixed in the upper housing portion 3, so that these can be removed through the inspection opening 4 from above out.

Landscapes

Health & Medical Sciences (AREA)
Life Sciences & Earth Sciences (AREA)
Engineering & Computer Science (AREA)
Hydrology & Water Resources (AREA)
Public Health (AREA)
Water Supply & Treatment (AREA)
Structures Of Non-Positive Displacement Pumps (AREA)
Vehicle Step Arrangements And Article Storage (AREA)
Pens And Brushes (AREA)
Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
Lubricants (AREA)
Eye Examination Apparatus (AREA)

EP04022867A 2004-09-24 2004-09-24 Puits Expired - Lifetime EP1640510B1 (fr)

Priority Applications (4)

Application Number	Priority Date	Filing Date	Title
AT04022867T ATE404741T1 (de)	2004-09-24	2004-09-24	Brunnen
DE502004007849T DE502004007849D1 (de)	2004-09-24	2004-09-24	Brunnen
PL04022867T PL1640510T3 (pl)	2004-09-24	2004-09-24	Studnia
EP04022867A EP1640510B1 (fr)	2004-09-24	2004-09-24	Puits

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
EP04022867A EP1640510B1 (fr)	2004-09-24	2004-09-24	Puits

Publications (2)

Publication Number	Publication Date
EP1640510A1 true EP1640510A1 (fr)	2006-03-29
EP1640510B1 EP1640510B1 (fr)	2008-08-13

Family

ID=34926713

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP04022867A Expired - Lifetime EP1640510B1 (fr)	2004-09-24	2004-09-24	Puits

Country Status (4)

Country	Link
EP (1)	EP1640510B1 (fr)
AT (1)	ATE404741T1 (fr)
DE (1)	DE502004007849D1 (fr)
PL (1)	PL1640510T3 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2010077157A1 (fr) *	2008-12-30	2010-07-08	Inwap Sp. Z.O.O.	Réservoir pour une station de pompage d'eaux d'égout
EP2221422A1 (fr) *	2009-02-21	2010-08-25	Grundfos Management A/S	Récipient de collecte pour installations de relèvement d'eaux usées
EP2447190A1 (fr) *	2010-10-26	2012-05-02	Wisy AG	Réservoir souterrain fabriqué en matière synthétique
WO2017114486A1 (fr) *	2015-12-31	2017-07-06	格兰富控股联合股份公司	Unité de station de pompage préfabriquée et unité de distribution d'eau
CN106930398A (zh) *	2015-12-31	2017-07-07	格兰富控股联合股份公司	预制泵站单元及配水单元
RU2736679C1 (ru) *	2020-05-28	2020-11-19	Александр Иванович Худолий	Смотровой колодец подземных комуникаций
CN112012330A (zh) *	2020-09-07	2020-12-01	中国十七冶集团有限公司	车行道下一体化污水提升设备的安装施工方法
EP4327910A1 (fr) *	2022-08-25	2024-02-28	AGU Arbeitsgemeinschaft Umwelt GmbH	Dispositif pour faire fonctionner un jeu d'eau

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR3155550B1 (fr) *	2023-11-22	2025-10-10	Techneau	Cuve de traitement d’eau

Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR1544054A (fr) *	1966-08-23	1968-10-31	Stenberg Flygt Ab	Groupe d'éléments de construction, notamment pour puits, à emboîtement et son procédé d'application
US4472911A (en) *	1981-02-13	1984-09-25	Pont-A-Mousson S.A.	Construction for access to a buried pipeline
GB2145444A (en) *	1983-08-05	1985-03-27	John Patrick Telford	Manhole chambers
DE4315535A1 (de) *	1993-05-10	1994-11-17	Kordes Klaeranlagen U Pumpwerk	Kunststoff-Schacht
US5727901A (en) *	1996-01-18	1998-03-17	Rennie; David G.	Collection tank
GB2374379A (en) *	2001-03-20	2002-10-16	Shaun Hume	Domestic water tank

2004
- 2004-09-24 DE DE502004007849T patent/DE502004007849D1/de not_active Expired - Lifetime
- 2004-09-24 AT AT04022867T patent/ATE404741T1/de not_active IP Right Cessation
- 2004-09-24 PL PL04022867T patent/PL1640510T3/pl unknown
- 2004-09-24 EP EP04022867A patent/EP1640510B1/fr not_active Expired - Lifetime

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR1544054A (fr) *	1966-08-23	1968-10-31	Stenberg Flygt Ab	Groupe d'éléments de construction, notamment pour puits, à emboîtement et son procédé d'application
US4472911A (en) *	1981-02-13	1984-09-25	Pont-A-Mousson S.A.	Construction for access to a buried pipeline
GB2145444A (en) *	1983-08-05	1985-03-27	John Patrick Telford	Manhole chambers
DE4315535A1 (de) *	1993-05-10	1994-11-17	Kordes Klaeranlagen U Pumpwerk	Kunststoff-Schacht
US5727901A (en) *	1996-01-18	1998-03-17	Rennie; David G.	Collection tank
GB2374379A (en) *	2001-03-20	2002-10-16	Shaun Hume	Domestic water tank

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
WO2010077157A1 (fr) *	2008-12-30	2010-07-08	Inwap Sp. Z.O.O.	Réservoir pour une station de pompage d'eaux d'égout
EP2221422A1 (fr) *	2009-02-21	2010-08-25	Grundfos Management A/S	Récipient de collecte pour installations de relèvement d'eaux usées
EP2447190A1 (fr) *	2010-10-26	2012-05-02	Wisy AG	Réservoir souterrain fabriqué en matière synthétique
WO2017114486A1 (fr) *	2015-12-31	2017-07-06	格兰富控股联合股份公司	Unité de station de pompage préfabriquée et unité de distribution d'eau
CN106930398A (zh) *	2015-12-31	2017-07-07	格兰富控股联合股份公司	预制泵站单元及配水单元
RU2736679C1 (ru) *	2020-05-28	2020-11-19	Александр Иванович Худолий	Смотровой колодец подземных комуникаций
CN112012330A (zh) *	2020-09-07	2020-12-01	中国十七冶集团有限公司	车行道下一体化污水提升设备的安装施工方法
EP4327910A1 (fr) *	2022-08-25	2024-02-28	AGU Arbeitsgemeinschaft Umwelt GmbH	Dispositif pour faire fonctionner un jeu d'eau
DE102022121596A1 (de) *	2022-08-25	2024-03-07	AGU Arbeitsgemeinschaft Umwelt GmbH	Vorrichtung zum Betreiben eines Wasserspiels

Also Published As

Publication number	Publication date
ATE404741T1 (de)	2008-08-15
PL1640510T3 (pl)	2009-01-30
DE502004007849D1 (de)	2008-09-25
EP1640510B1 (fr)	2008-08-13

Publication	Publication Date	Title
EP1640510B1 (fr)	2008-08-13	Puits
DE2701157A1 (de)	1978-07-20	Geruchsverschluss fuer fluessigkeiten
EP2230359A2 (fr)	2010-09-22	Ensemble pour la liaison d'un puits d'inspection et d'une conduite d'évacuation
WO2018104411A2 (fr)	2018-06-14	Système de chasse sous pression pour cuvette de wc
EP2508686B1 (fr)	2013-07-03	Installation de retenue pour l'eau de précipitation et les eaux usées
DE3333883C2 (fr)	1992-10-22
DE602004007445T2 (de)	2008-03-13	Bodenablauf
CH692789A5 (de)	2002-10-31	Schwimmende Tauchwand.
EP3058145B1 (fr)	2020-07-15	Installation de relevement d'eaux usees
DE102023123249A1 (de)	2025-03-06	Anordnungssystem zur Anordnung eines Spülbehälters eines Sanitärausstattungsgegenstandes
DE3335435A1 (de)	1985-04-04	Behaelter fuer eine abwasser-pumpstation
EP1548193A2 (fr)	2005-06-29	Dispositif pour empêcher l'eau d'entrer dans un puit de regard
DE3044426C2 (fr)	1987-11-19
DE102007020399B4 (de)	2009-12-31	Tank, insbesondere Erdtank
DE29704565U1 (de)	1997-06-26	Vorrichtung zum Filtern von Wasser
DE8905963U1 (de)	1989-08-10	Vorrichtung zum Entfernen von Rechen- und/oder Siebgut aus einem Gerinne strömender Flüssigkeit
DE102004053056B3 (de)	2006-05-11	Abwasser-Sammelschacht
DE10337127B4 (de)	2012-03-08	Pfahl zum Einbringen in einen Untergrund oder Baugrund
DE102005038710A1 (de)	2007-05-24	Schachtrahmen mit Aufnahme für Einstiegshilfe
DE19610858C2 (de)	2003-02-27	Einlaufkasten
DE3530762A1 (de)	1986-03-06	Regenwasserschacht
DE19932859C2 (de)	2001-02-15	Aseptisches Pumpengehäuse mit schaltbarer Drainage
DE202006003408U1 (de)	2006-06-08	Schachtabdeckung mit gegossener Buchse für eine Einstiegshilfe
EP4001655B1 (fr)	2024-02-21	Pompe submersible à pression pour liquide et son utilisation
DE29719558U1 (de)	1997-12-18	Abscheider in Mehrkammerausbildung für mit Schwimm- und Sinkstoffen befrachtete Abwässer

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