EP3405681A1 - Entlüftungseinrichtung - Google Patents
EntlüftungseinrichtungInfo
- Publication number
- EP3405681A1 EP3405681A1 EP17700249.0A EP17700249A EP3405681A1 EP 3405681 A1 EP3405681 A1 EP 3405681A1 EP 17700249 A EP17700249 A EP 17700249A EP 3405681 A1 EP3405681 A1 EP 3405681A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- container
- component
- gap
- installation according
- conduit
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D9/00—Priming; Preventing vapour lock
- F04D9/004—Priming of not self-priming pumps
- F04D9/006—Priming of not self-priming pumps by venting gas or using gas valves
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
- E03C1/122—Pipe-line systems for waste water in building
- E03C1/1222—Arrangements of devices in domestic waste water pipe-line systems
- E03C1/1227—Arrangements of devices in domestic waste water pipe-line systems of pumps for facilitating drawing off
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/16—Pumping installations or systems with storage reservoirs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/426—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for liquid pumps
- F04D29/4293—Details of fluid inlet or outlet
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/605—Mounting; Assembling; Disassembling specially adapted for liquid pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/60—Mounting; Assembling; Disassembling
- F04D29/62—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps
- F04D29/628—Mounting; Assembling; Disassembling of radial or helico-centrifugal pumps especially adapted for liquid pumps
-
- 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 system comprising a container and an arrangement having a centrifugal pump which is arranged in the container, wherein the centrifugal pump promotes a medium in a conduit element.
- Such systems may be designed in particular as sewage lifting systems. These drain water, which accumulates below the backflow level, from the backflow. They are used to extract sewage-free and faecal wastewater from cellars in residential buildings. The resulting waste water is collected in a container. The level is usually detected by a level sensor. If a certain limit is reached, a centrifugal pump turns on, which promotes the waste water from the container.
- the container has a receptacle for an arrangement.
- the assembly which includes a centrifugal pump driven by a motor, dips into the wastewater.
- the engine protrudes from the container.
- the impeller of the centrifugal pump is surrounded by a housing part.
- DE 1 0 2007 008 692 A1 shows a sewage lifting plant with a container in which wastewater collects. At the top of the container an opening is provided into which projects an assembly having a centrifugal pump with a motor.
- the centrifugal pump comprises a housing part in which an impeller is arranged. The housing part with the impeller projects into the wastewater. The wastewater is sucked in via a suction nozzle and conveyed out of the container by the centrifugal pump.
- the motor of the assembly is connected to the impeller via a shaft.
- the arrangement consisting of the pump housing with the impeller and the motor connected via a shaft, forms a unit.
- the engine part protrudes from the container.
- the arrangement is supported by flange rings or plates. Between the flange rings or plates and the container sealing devices are arranged so that neither sewage nor unpleasant odors from the container to escape outside.
- DE 199 1 3 530 A1 describes a wastewater lifting plant with a container which receives liquid which flows into the container at irregular intervals and with a different amount.
- the plant comprises an arrangement with a
- centrifugal pumps are installed above the suction-side water level and their suction line has a foot valve, they are filled manually by means of a hopper on the pump suction nozzle or via a ventilation system, provided they are not self-priming.
- the pump room can partially or completely fill with air.
- the accumulated air must be removed before or during the start of the system. In conventional systems of the prior art, for example, this is achieved by means of bores which are arranged so that they either lie inside the container or are connected to the container via a hose or the like.
- a sewage lifting plant in which a bore is arranged in a main chamber cover plate, to which a connecting piece connects, which is connected to a pump venting hose.
- the pump vent hose opens into a manifold screwed to the pressure flange of the centrifugal pump.
- DE 29 13 970 A1 a sewage lifting plant is described with a container for the storage of irregular wastewater.
- the sewage lifting unit comprises a pump that is driven by a vertical shaft.
- the pump housing includes a venting device that provides protection against solids plugging of the wastewater.
- vents for venting are installed in the pressure line in conventional systems. This can lead to clogging of the vent holes, especially with fibrous solids. If the vent is placed in the room behind the impeller, backfill impellers may create a negative pressure, drawing air.
- the object of the invention is to provide a system which has a reliable operation and the highest possible efficiency, even in the promotion of solids-containing, especially fibrous media.
- the system should be characterized by the simplest possible construction and be less susceptible to interference. Continue to be as inexpensive to produce the system and have only the lowest possible operating costs.
- a gap for venting is arranged between a line element of the system and a component.
- the gap between the conduit element and the component is preferably annular. It proves to be particularly advantageous if the conduit element and the component have a circular cross-section or are formed like a hollow cylinder.
- the line element and the component are arranged at a distance from one another.
- the transition of the line element and the component is used, so that a defined annular gap is formed.
- they have an axial and / or radial distance from one another.
- the distance is in a favorable embodiment less than 2 mm, preferably less than 1 mm, in particular less than 0.5 mm. It proves to be particularly advantageous when the distance is more than 0.01 mm, preferably more than 0.05 mm, in particular more than 0.08 mm.
- the conduit element and / or the component has a surface delimiting the gap, which is not flat.
- recesses can be introduced into the abutting end faces of the conduit element and / or component.
- the annular gap has one or more notches. The notches are formed by the introduction of recesses in the conduit element and / or the component immediately adjacent thereto.
- the recesses in the duct element and / or the component directly adjacent thereto can have different shapes, for example angular, round, half, triangular and / or rectangular.
- the line element is designed as a discharge nozzle into which the centrifugal pump delivers the medium.
- the component can be designed as a flange bearing shield.
- the flange bearing shield includes a passage that is used as a pressure line.
- the transition of the two parts is designed as a blunt impact of two cylindrical pipe sections and is located inside the container. This creates an annular gap that can be used as a vent and at the same time generates a planar flow in the manner of a fluid carpet.
- the gap is aligned so that a leakage flow from the gap flows against an element which is arranged in the container. This may, for example, be the float of a level control.
- the liquid carpet is used to prevent or remove deposition on the level measuring device.
- the arrangement is designed as a pump unit, in particular centrifugal pump unit, and forms a unit that can be completely assembled or disassembled. It proves to be advantageous if the engine is at least partially disposed outside of the container. In one variant, the engine is completely positioned outside the container.
- the impeller of the centrifugal pump is connected via a vertical shaft arrangement with the motor.
- FIG. 1 shows a perspective view of the container of the installation
- FIG. 2 shows a side view of the arrangement
- FIG. 3 shows a perspective view of the arrangement from below
- FIG. 4 shows a sectional view of the installation
- FIG. 5 shows an axial section through the container
- FIG. 6 shows an enlarged detail of region B from FIG. 5.
- FIG. 1 shows a container 1 of a sewage lifting plant.
- the exemplary embodiment is a plastic container designed for non-pressurized operation. Accumulating wastewater is cached in the container 1 and then conveyed into a sewer.
- the container 1 has a higher in its height trained area with two inlets 2 and a lower trained by the height area. Furthermore, the container 1 has an emptying connection 3 and a hand hole 4, which is closed by a cover, which is not shown in FIG.
- FIG. 1 shows the part of a sensor module 5 which protrudes from the container 1 and, in the exemplary embodiment, is designed as a level measuring device for detecting the filling level.
- a float switch is used.
- the container 1 has a vent connection 6. About a arranged on the container 1 drain the collected wastewater in the container 1 is conveyed out.
- the lower of its height part of the container 1 has a receptacle 8 for an arrangement 9 shown in Figure 2.
- the receptacle 8 is designed in the embodiment as a circular opening at an upper side of the container 1.
- the arrangement 9 shown in FIG. 2 comprises a motor 13 and a centrifugal pump 10 with a first housing part 11 designed as a spiral housing and a further housing part 12 designed as a pressure cover.
- a pipe 15 connects to the discharge of the container 1 in the container collected medium.
- the conduit member 14 is formed as a discharge nozzle.
- the arrangement has a further vent 30, which is provided in addition to the annular gap.
- the vent 30 is disposed above or at the level of an impeller 24 in the first housing part 1 1.
- the vent 30 is executed in the embodiment as an aligned arrangement of openings which are introduced in a region 25 of the first housing part 1 1 and in a region of the further housing part 12, which is designed as Druckdeckeleinpass. Gases in the pump escape through the vent 30 and flow through the first opening in the first housing part 1 1 and then through the parallel thereto aligned second opening in the outer further housing part 12 in the container first
- FIG. 3 shows a perspective view of the arrangement from below.
- the arrangement 9 has a cutting unit 16 for comminuting solid components of the medium. Through openings 1 7 in a housing part 1 8, the medium flows into the centrifugal pump 10.
- the housing part 18 is designed as an impeller body.
- the further housing part 12 has areas 19 with which the arrangement rests on the upper container wall.
- FIG. 4 shows a longitudinal section through the sewage lifting plant.
- the arrangement 9 rests with area 19, which are formed by the further housing part, on an upper container wall. With fastening means 20, the arrangement 9 is connected to the container 1.
- the fastening means 20 may be, for example, screws.
- the engine 1 3 is surrounded by a motor housing 21.
- the motor 13 is an electric motor having a stator and a rotor.
- the motor 1 3 drives a shaft 22, which is supported by a bearing assembly 23.
- the shaft 22 is connected to an impeller 24.
- the impeller 24 is surrounded by a first housing part 1 1, which is designed as a spiral housing.
- the first housing part 1 1 has an area 25, which is formed in the embodiment as Laufradein- pass.
- the first housing part 1 1 has a suction region 26 on.
- the suction region 26 is hollow-cylinder-like and at least partially surrounds the cutting unit 16.
- the impeller 24 is designed as a radial impeller and conveys the medium via an angled conduit element 14 into a pipeline 15.
- FIG. 5 shows an axial section through the container 1.
- the trained as a spiral housing first housing part 1 1 is connected to the pressure element designed as a line member 14.
- the discharge nozzle is cast on the volute casing.
- the component 27 is in the embodiment part of a flange bearing plate 28.
- the component 27 is formed as a passage, which is used as a pressure line.
- FIG. 6 shows an enlarged detail of the region B from FIG. 5.
- a gap 29 is formed between the conduit element 14 and the component 27.
- the transition between the conduit member 14 and the component 27 is formed in this embodiment in the manner of a blunt impact.
- the line element 14 and the component 27 are arranged at a distance from one another. Preferably, they have an axial and / or radial distance from one another.
- the distance is in a favorable embodiment less than 2 mm, preferably less than 1 mm, in particular less than 0.5 mm. It proves to be particularly advantageous if the distance is more than 0.01 mm, preferably more than 0.05 mm, in particular more than 0.08 mm.
- conduit element 14 and the component 27 hollow-cylindrical pipe sections, which form an annular gap to each other by an axial and / or radial spacing.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016200909.5A DE102016200909A1 (de) | 2016-01-22 | 2016-01-22 | Entlüftungseinrichtung |
| PCT/EP2017/050481 WO2017125294A1 (de) | 2016-01-22 | 2017-01-11 | Entlüftungseinrichtung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3405681A1 true EP3405681A1 (de) | 2018-11-28 |
| EP3405681B1 EP3405681B1 (de) | 2020-04-22 |
Family
ID=57777656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP17700249.0A Active EP3405681B1 (de) | 2016-01-22 | 2017-01-11 | Entlüftungseinrichtung für eine pumpe in einem behälter |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP3405681B1 (de) |
| CN (1) | CN108700087B (de) |
| DE (1) | DE102016200909A1 (de) |
| DK (1) | DK3405681T3 (de) |
| HU (1) | HUE049734T2 (de) |
| WO (1) | WO2017125294A1 (de) |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB864620A (en) * | 1956-07-27 | 1961-04-06 | Ciba Ltd | Apparatus for pumping liquids from storage containers or the like |
| DE2913967A1 (de) | 1979-04-04 | 1980-10-23 | Hubert Combe | Behaelter, insbesondere sammelbehaelter fuer abwasserhebeanlagen |
| DE2913970A1 (de) | 1979-04-04 | 1980-10-23 | Hubert Combe | Steuerung fuer eine abwasser- und faekalienhebeanlage |
| JPS5726296A (en) * | 1980-07-25 | 1982-02-12 | Hitachi Ltd | Submerged pump |
| DE19913530A1 (de) | 1999-03-25 | 2000-09-28 | Ksb Ag | Niveauabhängige Steuerung von Pumpen |
| JP2003014250A (ja) * | 2001-06-27 | 2003-01-15 | Matsushita Electric Ind Co Ltd | 水冷式空気調和装置 |
| JP4039661B2 (ja) * | 2002-07-16 | 2008-01-30 | 自動車電機工業株式会社 | ウォッシャポンプ |
| JP2004100457A (ja) * | 2002-09-04 | 2004-04-02 | Koshin:Kk | 風呂水用汲み上げポンプ |
| DE102007008692A1 (de) | 2007-02-20 | 2008-08-21 | Ksb Aktiengesellschaft | Niveauabhängige Steuerung von Pumpen |
| JP2011007090A (ja) * | 2009-06-25 | 2011-01-13 | Kubota Corp | ポンプの排気構造 |
| KR200465102Y1 (ko) * | 2011-07-26 | 2013-02-01 | 손병천 | 수중펌프의 토출관에 공기유입장치가 구비된 저수조 자동배수장치 |
| EP2573288B1 (de) * | 2011-09-22 | 2013-10-16 | Grundfos Holding A/S | Abwasserhebeanlage |
| JP2015169189A (ja) * | 2014-03-11 | 2015-09-28 | 株式会社荏原製作所 | 吐出ケーシング及びこれを備えた立型水中ポンプ |
-
2016
- 2016-01-22 DE DE102016200909.5A patent/DE102016200909A1/de not_active Withdrawn
-
2017
- 2017-01-11 EP EP17700249.0A patent/EP3405681B1/de active Active
- 2017-01-11 CN CN201780007606.XA patent/CN108700087B/zh active Active
- 2017-01-11 WO PCT/EP2017/050481 patent/WO2017125294A1/de not_active Ceased
- 2017-01-11 DK DK17700249.0T patent/DK3405681T3/da active
- 2017-01-11 HU HUE17700249A patent/HUE049734T2/hu unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CN108700087B (zh) | 2021-02-02 |
| WO2017125294A1 (de) | 2017-07-27 |
| DK3405681T3 (da) | 2020-07-27 |
| DE102016200909A1 (de) | 2017-07-27 |
| EP3405681B1 (de) | 2020-04-22 |
| HUE049734T2 (hu) | 2020-10-28 |
| CN108700087A (zh) | 2018-10-23 |
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