EP3405677A1 - Entlüftungseinrichtung für eine pumpe in einem behälter - Google Patents
Entlüftungseinrichtung für eine pumpe in einem behälterInfo
- Publication number
- EP3405677A1 EP3405677A1 EP17700799.4A EP17700799A EP3405677A1 EP 3405677 A1 EP3405677 A1 EP 3405677A1 EP 17700799 A EP17700799 A EP 17700799A EP 3405677 A1 EP3405677 A1 EP 3405677A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- housing part
- container
- impeller
- centrifugal pump
- vent
- 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
- 238000009434 installation Methods 0.000 claims description 10
- 238000009423 ventilation Methods 0.000 claims description 5
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 claims description 2
- 238000013022 venting Methods 0.000 description 20
- 239000002351 wastewater Substances 0.000 description 14
- 239000010865 sewage Substances 0.000 description 8
- 230000002349 favourable effect Effects 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 235000019645 odor Nutrition 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- 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
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
-
- 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
- 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
Definitions
- the invention relates to a system comprising a container and an arrangement, which has a centrifugal pump, which is arranged in the container, and a motor for driving the centrifugal pump, which is arranged above the centrifugal pump, wherein the centrifugal pump has an impeller and a first housing part ,
- 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.
- a container the wastewater is collected. 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 10 2007 008 692 A1 shows a wastewater 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 13 530 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 system comprises an arrangement with a pump and a drive part.
- the pump liquid is transported from the container into a sewer network.
- the pump housing with the suction nozzle protrudes into the container.
- the drive part of the pump protrudes out of the container.
- a vent is required, which serves the removal of gas or air accumulation and thus allows the necessary filling with a pumped medium before starting the centrifugal pump.
- conventional sewage pumps for example, by open lines with a correspondingly large diameter venting guaranteed.
- 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 wastewater lifting systems. This can lead to clogging of the vent holes, especially with fibrous solids. If the vent is arranged in the space behind the impeller, a negative pressure can occur, in particular in the case of impellers with back ribbing, as a result of which air is drawn.
- the object of the invention is to provide a system which has a reliable mode of operation and the highest possible efficiency, even in the promotion of solids-containing, in particular fibrous media.
- the system should have the lowest possible noise during operation.
- the system has an arrangement with a centrifugal pump which encloses a housing part, which has a vent at the level of the impeller and / or above the height of the impeller.
- the term "height" is understood as a vertical distance to a reference point.
- the individual components of the arrangement are arranged with increasing height in the following order: inlet for medium, impeller with first housing part, further housing part, motor driven vertical shaft, which is aligned vertically.
- venting device in the first housing part, at the level of the impeller or above allows effective venting of the centrifugal pump while reducing the risk of blockages of the venting devices.
- venting device is particularly suitable for lifting systems with a cutting unit, especially for fibrous material to be conveyed.
- the venting device comprises at least one opening.
- the vent can also be formed by the opening itself, through which the air can escape, which has accumulated in the pump.
- the vent acts in the radial direction.
- the venting device is arranged so that the resulting leakage current is directed to a line element, wherein it proves to be particularly favorable when the leakage current is directed to a discharge nozzle of the centrifugal pump.
- the problem often occurs that a leakage current hits a container wall. Since the container acts as a resonant body, it comes to unwanted noise.
- the arrangement comprises a further housing part, which is arranged above the first housing part, wherein it proves to be advantageous if the further housing part is designed as a cover component.
- the lid member forms a cover for an opening of the container, which forms a receptacle for the arrangement.
- the lid member may be formed, for example, as a pressure lid.
- the lid member carries the assembly and has portions which rest on top of the upper container wall so that a portion of the assembly extends into the container and a portion of the assembly is disposed above the container opening and thus protrudes above the receptacle.
- the cover component can also serve as a bearing carrier.
- the first and the further housing part overlap one another.
- the first housing part may have a region which forms a receptacle for a region of the further housing part or vice versa, a region of the first housing part in a receptacle of the other
- the first housing part is designed as a spiral housing, which surrounds the impeller at least partially.
- the volute casing may have an impeller fitting as an area.
- the impeller fitting forms a receptacle by engaging an area of the wider area designed as a pressure lid. This area of the pressure lid is also referred to as pressure lid fitting.
- the impeller fitting of the volute casing and the pressure cap fitting overlap.
- the venting device may be arranged next to the first housing part in at least one further housing part. If two housing parts overlap, it proves advantageous if ventilation openings are introduced in both housing parts, which are aligned with one another in such a way that the leakage flow flows through the two openings from the interior of the centrifugal pump into the reservoir and thus ensures venting of the centrifugal pump becomes.
- the arrangement is designed as a pump unit, in particular as a 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. Between the impeller and a region of the first housing part, a gap for pressure reduction and / or volume reduction is preferably formed.
- a gap for venting can be 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 line element and the component have a circular cross-section or are formed like a hollow cylinder. Through the annular gap for venting enters a leakage current that creates a liquid carpet. In this construction, no seal is required between the conduit member and the component.
- the line element and the component are arranged at a distance from one another. For this purpose, the transition of the line element and the component is used, so that a defined annular gap is formed.
- 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.
- 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 is a sectional view of the system
- FIG. 5 shows an axial section of the centrifugal pump
- Figure 6 is a radial section through the arrangement along the A-A line
- FIG. 1 shows a container 1 of a sewage lifting plant.
- a container 1 of a sewage lifting plant In the exemplary embodiment is a plastic container, which is designed for a non-pressure 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 a discharge port 3 and a hand hole 4, which is closed by a lid, which is not shown in Figure 1.
- FIG. 1 shows the part of a sensor module 5 projecting out of the container 1, which in the exemplary embodiment is known as a level measuring device for detecting the sensor Level is executed.
- a level measuring device for detecting the sensor Level is executed.
- a float switch is used.
- the container 1 has a vent connection 6. Via a drain arranged on the container 1, the wastewater collected in the container 1 becomes
- 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 centrifugal pump 10 having a first housing part 11 designed as a spiral housing, a further housing part 12 designed as a pressure cover, and a motor 13.
- FIG. 3 shows a perspective view of the arrangement from below.
- the arrangement 9 has a cutting unit 6 for comminuting solid components of the medium.
- 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 motor 13 is surrounded by a motor housing 21.
- the motor 13 is an electric motor having a stator and a rotor.
- the motor 13 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 11, which is designed as a spiral housing.
- the first housing part 11 has an area 25, which in the embodiment as
- Impeller fitting is formed. Furthermore, the first housing part 1 has an intake region 26.
- the suction region 26 is hollow-cylinder-like and at least partially surrounds the cutting unit 6.
- the impeller 24 is formed as a radial impeller and conveys the medium via an angled conduit member 14 in a pipeline 15th
- FIG. 5 shows a longitudinal section which, in an enlarged view, shows a part of the centrifugal pump 10.
- the vent 27 is executed in the embodiment as a aligned arrangement of openings which are introduced in the region 25 of the first housing part and in a region 28 of the second housing part 12.
- the area 28 is designed as Druckdeckeleinpass. Gases in the pump escape through the vent 27 and flow through the first opening in the first housing part 11 and then through the parallel thereto aligned second opening in the outer further housing part 12 into the container first
- FIG. 6 shows a radial section through the arrangement along the AA line according to FIG. 5 of a section of the centrifugal pump 10 which has the vent 27.
- the vent 27 is directed to a conduit element 14. The one from the breather Device 27 radially emerging leakage current is spread and braked by the line member 14 so that noise is significantly reduced.
- Figure 7 shows the further housing part 12 from above, which is designed in the embodiment as a pressure cover.
- the further housing part 12 is a one-piece component, which is preferably made of a metallic material, in particular a casting.
- the further housing part has a first hollow cylindrical portion 29 with a larger diameter, which is open to the motor 3 and a second cylinder-like portion 30, which serves as a bearing support for a bearing assembly 23 of the shaft 22.
- a connection piece 31 for connection to the line element 14 and the pipe 15 is formed.
- FIG. 8 shows the further housing part 12 from below.
- Figure 8 shows an opening of the vent 27, which is designed in the embodiment as an aligned arrangement of openings. The opening is introduced in a region 28 of the second housing part 12.
- the area 28 is designed as Druckdeckeleinpass.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (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
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL17700799T PL3405677T3 (pl) | 2016-01-22 | 2017-01-11 | Urządzenie odpowietrzające do pompy w zbiorniku |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016200910.9A DE102016200910A1 (de) | 2016-01-22 | 2016-01-22 | Anlage |
PCT/EP2017/050485 WO2017125297A1 (de) | 2016-01-22 | 2017-01-11 | Entlüftungseinrichtung für eine pumpe in einem behälter |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3405677A1 true EP3405677A1 (de) | 2018-11-28 |
EP3405677B1 EP3405677B1 (de) | 2020-01-08 |
Family
ID=57851056
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17700799.4A Active EP3405677B1 (de) | 2016-01-22 | 2017-01-11 | Entlüftungseinrichtung für eine pumpe in einem behälter |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP3405677B1 (de) |
CN (1) | CN108474381B (de) |
DE (1) | DE102016200910A1 (de) |
DK (1) | DK3405677T3 (de) |
HU (1) | HUE048578T2 (de) |
PL (1) | PL3405677T3 (de) |
WO (1) | WO2017125297A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016225921A1 (de) * | 2016-12-21 | 2018-06-21 | KSB SE & Co. KGaA | Abwasserhebeanlage mit Schneidwerk |
DE102018210207B4 (de) * | 2018-06-22 | 2022-03-10 | E.G.O. Elektro-Gerätebau GmbH | Wasserführendes Haushaltsgerät mit einer Impellerpumpe |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2850984A (en) * | 1956-02-13 | 1958-09-09 | Edwards | Vapor expelling pump |
DE2228305A1 (de) * | 1972-06-09 | 1973-12-20 | Siemens Ag | Tauchpumpe |
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 |
DE29522235U1 (de) * | 1995-02-02 | 2001-01-11 | Bsh Bosch Siemens Hausgeraete | Flügelrad-Kondensatpumpe für einen Haushalt-Wäschetrockner |
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 |
JP2006274929A (ja) * | 2005-03-29 | 2006-10-12 | Kurita Water Ind Ltd | 液体用ポンプ |
DE102007008692A1 (de) | 2007-02-20 | 2008-08-21 | Ksb Aktiengesellschaft | Niveauabhängige Steuerung von Pumpen |
DE102008016476A1 (de) * | 2008-03-31 | 2009-10-01 | BSH Bosch und Siemens Hausgeräte GmbH | Hausgerät mit einer Pumpe zur Förderung eines Mediums |
CN203961006U (zh) * | 2014-06-18 | 2014-11-26 | 盛云科技有限公司 | 污水提升装置 |
CN204645238U (zh) * | 2015-04-01 | 2015-09-16 | 江苏金环环保设备有限公司 | 污水密闭收集提升装置 |
-
2016
- 2016-01-22 DE DE102016200910.9A patent/DE102016200910A1/de not_active Withdrawn
-
2017
- 2017-01-11 DK DK17700799.4T patent/DK3405677T3/da active
- 2017-01-11 EP EP17700799.4A patent/EP3405677B1/de active Active
- 2017-01-11 CN CN201780007571.XA patent/CN108474381B/zh active Active
- 2017-01-11 HU HUE17700799A patent/HUE048578T2/hu unknown
- 2017-01-11 WO PCT/EP2017/050485 patent/WO2017125297A1/de active Application Filing
- 2017-01-11 PL PL17700799T patent/PL3405677T3/pl unknown
Also Published As
Publication number | Publication date |
---|---|
DE102016200910A1 (de) | 2017-07-27 |
CN108474381A (zh) | 2018-08-31 |
EP3405677B1 (de) | 2020-01-08 |
WO2017125297A1 (de) | 2017-07-27 |
HUE048578T2 (hu) | 2020-07-28 |
DK3405677T3 (da) | 2020-03-16 |
PL3405677T3 (pl) | 2020-06-29 |
CN108474381B (zh) | 2020-02-18 |
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