EP2573287A1 - Installation de relèvement d'eaux usées - Google Patents

Installation de relèvement d'eaux usées Download PDF

Info

Publication number
EP2573287A1
EP2573287A1 EP11182388A EP11182388A EP2573287A1 EP 2573287 A1 EP2573287 A1 EP 2573287A1 EP 11182388 A EP11182388 A EP 11182388A EP 11182388 A EP11182388 A EP 11182388A EP 2573287 A1 EP2573287 A1 EP 2573287A1
Authority
EP
European Patent Office
Prior art keywords
plant according
lifting plant
check valve
latching
pressure line
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Withdrawn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
EP11182388A
Other languages
German (de)
English (en)
Inventor
Riccardo Dal Canto
Alessandro Iacaponi
Ralf Schomäcker
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 Holdings AS
Original Assignee
Grundfos Holdings 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 Holdings AS filed Critical Grundfos Holdings AS
Priority to EP11182388A priority Critical patent/EP2573287A1/fr
Publication of EP2573287A1 publication Critical patent/EP2573287A1/fr
Withdrawn legal-status Critical Current

Links

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 wastewater lifting plant with those specified in the preamble of claim 1 features.
  • Wastewater lifting plants are used to raise sewage, which is below a level of a sewer or sewer, to the level of the sewer or sewer. This is often the case, for example, in waste water from basements of buildings.
  • Known sewage lifting plants generally have a collecting container, in which flows into the wastewater to be lifted. At or in the sump a pump unit is arranged, which then pumps out the waste water from the sump.
  • the pump unit usually consists of an electric motor and a pump, wherein the pump is followed by a pressure line through which the waste water is conveyed out of the sump.
  • a check valve is arranged, which prevents wastewater from flowing from an outlet line connected to the pressure line flows back into the collecting container. It is known to attach this check valve interchangeable with the wastewater lifting plant. There is the problem that the check valve may accidentally come off due to vibration or vibration. This can then lead to an undesirable leakage.
  • the wastewater lifting plant has, as is known, a collecting container into which the waste water to be lifted or conveyed can flow through at least one inlet opening.
  • At least one pump unit is arranged on or in the collecting container, which can pump the wastewater located in the collecting container into a higher drainage line.
  • For switching on and off the pump unit can be provided on or in the collecting tank at least one level switch, which turns on reaching a predetermined water level in the sump the pump unit and falls below a predetermined water level, the pump unit off again.
  • On the output side of the pump of the pump unit is followed by a pressure line through which the wastewater is pumped out of the sewage lifting plant. At the pressure line can then connect an outlet line leading to a sewer line.
  • a check valve is also arranged in a known manner, which prevents wastewater from flowing out of the adjoining discharge line can flow back into the sump.
  • the check valve is releasably secured by means of a thread or a bayonet connection.
  • the check valve by a Combined rotary and linear movement are attached and released.
  • This makes it possible to easily replace the check valve in case of damage and possibly also to be able to easily clean.
  • an additionally detachable anti-twist device is provided in addition to the thread and the bayonet connection.
  • This detachable rotation lock is designed so that initially this rotation must be solved in order to rotate the check valve can. Ie. the threaded connection or bayonet connection can not be released without loosening the additional anti-rotation lock. This prevents the threaded connection or the bayonet connection from coming loose unintentionally.
  • the collecting container is preferably designed as a cup-shaped container open at the top.
  • the container may have a round or substantially angular, in particular rectangular basic shape.
  • the collecting container preferably has on its upper side an opening which is closed by a flange plate.
  • This flange plate forms on the one hand a lid which closes the collecting container upwards, on the other hand, it can serve to carry various aggregates of sewage lifting plant.
  • the pump unit is preferably attached to the flange plate.
  • an electric motor and below the flange plate in the interior of the collecting container may be arranged a driven by the electric motor pump. Electric motor and pump can be connected to each other by a shaft which extends through an opening in the flange plate.
  • the flange plate can carry a level switch for switching on and off of the pump unit depending on the water level in the interior of the collecting container.
  • electrical connection or control elements can also be arranged.
  • the pressure line preferably extends from a pump arranged in the interior of the collecting container through an opening of the flange plate to the top side of the flange plate.
  • the check valve can be arranged, wherein the output side of the check valve, preferably a connection is formed, to which an outlet line for connecting the sewage lifting plant is connected to a sewer.
  • the pressure line is preferably fixed with its inlet end to the pump in the interior of the collecting container.
  • the pressure line is preferably fixed to the end facing away from the pump on the flange plate and / or on the wall of the collecting container.
  • the end of the pressure line which is provided for connection to the check valve, fixed directly or indirectly via the flange plate to the sump.
  • the check valve by means of the thread or the bayonet connection and the additional releasable rotation lock releasably attached to the pressure line or the flange plate.
  • a direct attachment of the check valve at the output end of the pressure line may be provided or an indirect attachment by the check valve is fixed to the flange plate.
  • the output side that is, the end facing away from the pump of the pressure line is also fixed to the flange plate.
  • the rotation is preferably designed as a releasable latching connection.
  • a resilient latching element in particular a resilient latching tongue, can engage with a corresponding latching recess or a corresponding latching projection.
  • the latching element is held by the spring force in engagement with the latching recess or the latching projection.
  • an additional force is required, which must therefore be applied from the outside to release the latching connection.
  • the latching recess or the latching projection may be formed, for example, on a rotatable fastening element of the check valve, while the latching element or the latching tongue is fastened to a stationary part of the pressure line, the flange plate or the collecting container.
  • the anti-rotation comprises a resilient latching tongue, which is in engagement with a latching projection or a recess under spring action.
  • the latching tongue engages behind it so that a relative movement between latching projection and latching tongue in at least one direction, d. H. Direction of rotation of the check valve, is blocked.
  • This blockage can be solved by movement of the latching tongue in such a way that the latching tongue is disengaged from the latching projection.
  • the latching tongue is preferably moved transversely to the direction of rotation.
  • At least one locking projection is formed on the outer circumference of the check valve, with which a resilient latching tongue is under spring action in engagement.
  • the latching projection is preferably arranged on a rotatable element of the return sleep valve, ie the element which has to be rotated for fixing and releasing the threaded engagement or the bayonet connection.
  • a latching projection may also be provided a latching recess, in which engages the resilient latching tongue with a corresponding latching element.
  • a plurality of latching projections or latching recesses are formed on the outer circumference of the check valve or a rotatable element of the check valve distributed over the circumference, which can engage with a resilient latching tongue.
  • the resilient detent tongue is preferably attached to the pressure line and further preferably integrally formed with at least a portion of the pressure line. This allows easy assembly and production.
  • the resilient latching tongue can be made in one piece with the component forming the pressure line as an injection molded part made of plastic.
  • the latching tongue may be attached to a wall of the collecting container or a flange plate covering the top of the collecting container. Even with these components, the latching tongue may preferably be made in one piece, in particular made of plastic.
  • the at least one latching projection or the at least one latching recess preferably has, on a rear side in the screwing direction, a substantially radially extending contact shoulder. At this abutment shoulder comes the resilient latching tongue, possibly with a formed on the latching tongue engagement element to the system, so that a rotational movement of the component, which is formed at least one latching projection or the at least one latching recess is blocked.
  • the radial extension of the contact surface prevents the latching tongue from being moved out of engagement on rotation by the contact shoulder.
  • the at least one latching projection or the at least one latching recess at a front in Einfrauma a outwardly extending at an acute angle to the radius bearing surface.
  • Such an obliquely extending to the direction of contact surface has the advantage that upon rotation of this contact surface, the locking tongue moves against its spring action in a position in which it disengages from the locking projection or the recess, so that rotation of the thread or the bayonet connection possible is.
  • the latching tongue is pressed relative to the rotational axis, radially outward.
  • the latching tongue preferably has an abutment shoulder extending substantially transversely to the direction of insertion of the non-return valve, and a pressure surface inclined in the direction of insertion of the non-return valve on its side opposite the abutment shoulder. It is thus achieved that, in the release direction, the abutment shoulder extending transversely to the screwing-in direction comes into contact with the corresponding latching projection or the corresponding latching recess. In particular, this abutment shoulder then comes to rest against a radially extending abutment surface of the detent recess or of the detent projection. In this system, directed forces are avoided transversely to the direction of rotation, which could move the latching tongue automatically disengaged.
  • the inclined pressure surface In the screwing, ie when attaching the check valve, however, comes the inclined pressure surface the contact shoulder on an opposite surface of a latching projection or a recess for engagement.
  • this opposite surface is an inclined extending contact surface of the locking projection and the recess, as described above.
  • the inclined pressure surface causes in contact with the latching recess or the latching projection, a force transverse to the screwing, which is adapted to move the latching tongue of the latching projection or the latching recess out of engagement, as described above.
  • the Abwasserhebstrom described above is preferably designed as a condensate lifting system, in particular for use in a heating or air conditioning.
  • a condensate lifting system for use in a heating or air conditioning.
  • the sewage lifting plant described above is preferably formed.
  • such a sewage lifting plant is a sewage lifting plant of small dimensions, which is suitable only for the promotion of small amounts of sewage without major impurities.
  • the wastewater lifting plant has a collecting container 2, which is closed at its upper side by a flange plate 4.
  • Four inlet openings 6 are provided in the flange plate 4 at four corners, through which wastewater to be lifted, in particular condensate of a heating system, can enter into the collecting container 2. It should be understood that not all four inlet openings 6 must be used simultaneously, but the four inlet openings 6 can be used alternatively for connection, depending on which side of the wastewater is supplied.
  • an electric motor 8 is also arranged, which forms the pump unit together with a arranged inside the collecting container 2 pump 10. The pump 10 is driven by the electric motor 8 via a shaft 12.
  • a level switch For switching on and off of the electric motor 8, a level switch is provided, which has a float 14 which is arranged in the interior of the collecting container 2. Via an actuating rod 15, the float 14 acts on a switch 16, which is arranged above the flange plate 4 and the electric motor 8 on and off.
  • the pump 10 conveys into a pressure line 18, which extends from the arranged at the bottom of the collecting container 2 pump 10 substantially vertically upward through an opening 20 in the flange plate 4 from the collecting container 2 to the outside.
  • a check valve 24 is inserted into an open end 22 of the pressure line 18.
  • the outlet end 26 of the check valve 24 serves to connect an output line, not shown here, for example in the form of a hose.
  • the check valve 24 is provided at its end connected to the pressure line 18 with an external thread 28 which is screwed into an internal thread 30 in the interior of the pressure line 18 at its end 22.
  • a seal 32 in the form of an O-ring is disposed between the outer periphery of the check valve 24 and the inner peripheral surface of the pressure line 18.
  • the check valve 24 has on its outer circumference an octagonal contour 34, whose mutually parallel surfaces have a distance which corresponds to a conventional wrench size of a wrench.
  • the check valve 24 can be easily screwed by means of a wrench in the internal thread 30.
  • an octagonal contour another contour suitable for the wrench size of a wrench, in particular a hexagonal contour, could also be selected.
  • a resilient latching tongue 36 is formed on the flange plate 4, which forms the upper lid of the collecting container 2.
  • the latching tongue 36 extends with its longitudinal axis substantially parallel to the longitudinal axis X of the check valve 24 and is transversely to the longitudinal axis X of the check valve 24, by which it is screwed into the internal thread 30, movable. This direction of movement transverse to the longitudinal axis X is in Fig. 6 indicated by the arrow A.
  • the latching tongue 36 has a locking element 38 which is directed radially inwards with respect to the longitudinal axis X.
  • the oblique contact surface slides on the front 42 of the locking projection 40 on the oblique pressure surface, which is formed by the back 44 of the locking element 38, along, wherein the latching tongue 36 radially under elastic deformation in the direction A. is pressed to the outside, so that the locking projection 40, the locking element 38 when screwing in screwing direction E can happen.
  • the rear side 46 of the latching projection 40 is designed as a contact surface extending essentially radially with respect to the longitudinal or rotational axis X. Accordingly, the front side 48 is formed as an abutment shoulder 48, which likewise extends substantially in the radial direction.
  • the contact shoulder formed on the rear side 46 of the latching projection 40 thus comes into contact with the contact shoulder formed by the front side 48 of the latching element 38. Due to their radial extension, there are no lateral forces that could automatically deflect the latching tongue 36 in the direction A, and the rotational movement is so securely blocked.
  • the latching tongue 36 In order to unscrew the check valve 24 in the direction of rotation L from the internal thread 30, the latching tongue 36 must be moved manually against the spring action in the direction A radially outward. Due to the spring action, the latching tongue 36 automatically moves without external force into its locking position, ie its radially inner position. Thus, the latching tongue 36 forms an additional manually releasable rotation.
  • its upper end 50 is designed as an extended grip element, which can be easily grasped and pressed against a surrounding wall 52.
  • the wall 52 extends away from the flange plate 4 and surrounds the latching tongue 36. In order to disengage the latching tongue 36 from the latching projection 40 bring the latching tongue 36 must be moved to the wall 52 to.
  • the wall 52 and the resilient latching tongue 36 are made in one piece with the flange plate 4 made of plastic. This allows a cost-effective production.

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)
  • Details Of Reciprocating Pumps (AREA)
EP11182388A 2011-09-22 2011-09-22 Installation de relèvement d'eaux usées Withdrawn EP2573287A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP11182388A EP2573287A1 (fr) 2011-09-22 2011-09-22 Installation de relèvement d'eaux usées

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11182388A EP2573287A1 (fr) 2011-09-22 2011-09-22 Installation de relèvement d'eaux usées

Publications (1)

Publication Number Publication Date
EP2573287A1 true EP2573287A1 (fr) 2013-03-27

Family

ID=44651512

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11182388A Withdrawn EP2573287A1 (fr) 2011-09-22 2011-09-22 Installation de relèvement d'eaux usées

Country Status (1)

Country Link
EP (1) EP2573287A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113137377A (zh) * 2021-04-25 2021-07-20 中美埃梯梯泵业集团有限公司 一种预制泵的反冲洗阀

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5931508A (en) * 1997-10-14 1999-08-03 Chapin Manufacturing, Inc. Fluid coupling
EP1493957A1 (fr) * 2003-06-30 2005-01-05 Geberit Technik Ag Raccord à vis entre boíte et élément de jonction
EP1731684A1 (fr) * 2005-06-11 2006-12-13 KSB Aktiengesellschaft Procédé de levage d'eau usée et dispositif de levage d'eau usée
DE202009002780U1 (de) * 2009-02-27 2009-06-04 Ksb Aktiengesellschaft Strömungsführende Tragvorrichtung

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5931508A (en) * 1997-10-14 1999-08-03 Chapin Manufacturing, Inc. Fluid coupling
EP1493957A1 (fr) * 2003-06-30 2005-01-05 Geberit Technik Ag Raccord à vis entre boíte et élément de jonction
EP1731684A1 (fr) * 2005-06-11 2006-12-13 KSB Aktiengesellschaft Procédé de levage d'eau usée et dispositif de levage d'eau usée
DE202009002780U1 (de) * 2009-02-27 2009-06-04 Ksb Aktiengesellschaft Strömungsführende Tragvorrichtung

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113137377A (zh) * 2021-04-25 2021-07-20 中美埃梯梯泵业集团有限公司 一种预制泵的反冲洗阀
CN113137377B (zh) * 2021-04-25 2022-10-04 中美埃梯梯泵业集团有限公司 一种预制泵的反冲洗阀

Similar Documents

Publication Publication Date Title
DE202008014389U1 (de) Fließbecher für eine Farbspritzpistole
WO2005070558A1 (fr) Godet d'ecoulement destine a un pistolet pulverisateur
DE202013103517U1 (de) Befestigungsanordnung für einen Wasserhahn
EP3156661B1 (fr) Installation d'eau domestique ou pompe avec clapet anti-retour
DE202004003116U1 (de) Fließbecher für eine Farbspritzpistole
EP2711475B1 (fr) Evier avec un dispositif d'évacuation aéré
DE10322832B4 (de) Vorrichtung zur Handnotbetätigung von Ventilen
EP2573287A1 (fr) Installation de relèvement d'eaux usées
EP2573288B1 (fr) Installation de relèvement d'eaux usées
EP3364043B1 (fr) Groupe motopompe avec dispositif de purge d'air et de vidange intégré
EP2481856B1 (fr) Unité de soupape de remplissage
EP1035262B1 (fr) Dispositif de levage d'eaux usées
DE102019101944B4 (de) Hochdruckfilter und Filterelement
EP2489799B1 (fr) Installation de relèvement d'eaux usées
CH716848B1 (de) Becken mit Bodenablauf.
EP1653013A1 (fr) Raccord d'accouplement pour un tuyau souple sanitaire
DE102007010472B4 (de) Sanitäre Niederdruckarmatur
DE8317189U1 (de) Steckkupplung
DE202010004059U1 (de) Verschluss- und Entnahmevorrichtung zum Verschließen von Filtergehäusen
EP1130328B1 (fr) Dispositif de filtrage et de vidange
DE102007058758B4 (de) Einrichtung zum Ablassen von Flüssigkeit aus einem Behälter
DE102013019884B4 (de) Filtersystem mit Schraubdeckel und dessen Verwendung als Ölfilter
DE102015002899A1 (de) Sanitärarmatur
EP2486182A1 (fr) Appareil électroménager à circulation d'eau, en particulier lave-vaisselle ou lave-linge
EP2559926A1 (fr) Soupape de sécurité

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

17P Request for examination filed

Effective date: 20130925

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

17Q First examination report despatched

Effective date: 20131112

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20150617