EP3405681B1 - Venting device for pump in a container - Google Patents
Venting device for pump in a container Download PDFInfo
- Publication number
- EP3405681B1 EP3405681B1 EP17700249.0A EP17700249A EP3405681B1 EP 3405681 B1 EP3405681 B1 EP 3405681B1 EP 17700249 A EP17700249 A EP 17700249A EP 3405681 B1 EP3405681 B1 EP 3405681B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- container
- component
- line element
- gap
- centrifugal pump
- 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.)
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Links
- 238000013022 venting Methods 0.000 title description 7
- 239000002351 wastewater Substances 0.000 claims description 18
- 238000009423 ventilation Methods 0.000 description 13
- 238000010276 construction Methods 0.000 description 7
- 239000010865 sewage Substances 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 230000007704 transition Effects 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 230000035508 accumulation Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000012432 intermediate storage Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035943 smell Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Images
Classifications
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- 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 with a container for the intermediate storage of waste water and an arrangement which has a centrifugal pump which is arranged in the container, the centrifugal pump conveying a medium into a line element forming a pressure port.
- Such systems can be designed in particular as wastewater lifting plants. These discharge water that accumulates below the backflow level backflow-proof. They are used to pump sewage that is free of faeces and contains faeces, which accumulates in the basements of residential buildings. The waste water is collected in a container. The fill level is usually recorded using a level sensor. If a certain limit is reached, a centrifugal pump switches on, which pumps the waste water out of the tank.
- the container has a receptacle for an arrangement.
- the arrangement which comprises a centrifugal pump driven by a motor, is immersed in the waste water.
- the motor protrudes from the container.
- the impeller of the centrifugal pump is surrounded by a housing part.
- the DE 10 2007 008 692 A1 shows a wastewater lifting plant with a container in which wastewater collects. An opening is provided on the top of the container, into which an arrangement projects, which has 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 protrudes into the waste water.
- the wastewater is sucked in via a suction nozzle and transported out of the tank by the centrifugal pump.
- the motor of the arrangement 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 motor part protrudes from the container.
- the arrangement is supported by flange rings or plates. Sealing devices are arranged between the flange rings or plates and the container, so that neither wastewater nor unpleasant smells escape from the container.
- the system comprises an arrangement with a pump and a drive part.
- the pump transports liquid 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 from the container.
- centrifugal pumps In conventional sewage pumps, ventilation is ensured, for example, by open lines with a correspondingly large diameter. The leakage water flow that occurs is accepted or returned to the inlet chamber. If centrifugal pumps are installed above the water level on the suction side and their suction line has a foot valve, they are filled by hand using a filling funnel on the pump suction nozzle or via a ventilation system, provided they are not self-priming.
- the pump room can be partially or completely filled with air, especially when starting up for the first time and when the tank is low.
- the accumulated air must be removed before or during the start of the system.
- DE 29 13 967 A1 describes a sewage lifting unit in which a bore is arranged in a main chamber cover plate, to which a connection piece is connected, which is connected to a pump ventilation hose.
- the pump ventilation hose opens into a bend screwed onto the pressure flange of the centrifugal pump.
- the wastewater lifting plant comprises a pump that is driven by a vertical shaft.
- the pump housing comprises a venting device which has a protective device against clogging by solids in the waste water.
- 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 solid media, especially fiber media.
- the system should be characterized by the simplest possible construction and should not be susceptible to faults. Furthermore, the system should be as inexpensive to manufacture as possible and should only have the lowest possible operating costs.
- an annular gap for venting the centrifugal pump is arranged between the line element of the system and the passage of the flange shield (28).
- no additional ventilation holes are required for venting the centrifugal pump in the construction according to the invention. It proves to be particularly advantageous if the line element and the component have a circular cross section or are designed like a hollow cylinder.
- a leakage flow occurs through the annular gap for ventilation, which creates a liquid carpet.
- the line element and the component are arranged at a distance from one another. For this, the transition from the line element and the component is used, so that a defined annular gap is created.
- the distance is 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.
- the line element and / or the component has a surface which delimits the gap and is not planar.
- recesses can be made in the abutting end faces of the line element and / or component.
- the annular gap has one or more notches. The notches are created by making recesses in the line element and / or the component immediately adjacent to it.
- the recesses in the line 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 pressure port into which the centrifugal pump delivers the medium.
- the component is designed as a passage of the flange end shield, which is used as a pressure line.
- the transition between the two parts is a blunt joint of two cylindrical pipe sections and is located inside the container. This creates an annular gap which can be used as a vent and which at the same time creates a flat flow in the manner of a fluid carpet.
- the gap is oriented such that a leakage flow flows from the gap into an element which is arranged in the container. This can be, for example, the float of a level control.
- the liquid carpet is used to prevent or remove deposits on the level measuring device.
- the arrangement is preferably designed as a centrifugal pump unit that forms a unit that can be completely assembled or disassembled.
- the motor is at least partially arranged outside the container.
- the motor is positioned completely outside the container.
- the impeller of the centrifugal pump is connected to the motor via a vertical shaft arrangement.
- Figure 1 shows a container 1 of a sewage lifting plant.
- it is a plastic container that is designed for unpressurized operation. Waste water is temporarily stored in the container 1 and then conveyed into a sewer.
- the container 1 has an area of higher construction with two inlets 2 and an area of lower construction. Furthermore, the container 1 has an emptying connection 3 and a hand hole 4, which is closed by a lid, which in Figure 1 is not shown
- Figure 1 the part of a sensor module 5 protruding from the container 1 can be seen, which in the exemplary embodiment is designed as a level measuring device for detecting the fill level.
- a level measuring device for detecting the fill level.
- a float switch is used.
- the container 1 has a vent connection 6.
- the waste water collected in container 1 is conveyed out via an outlet arranged on container 1.
- the lower part of the container 1 in terms of its height has a receptacle 8 for an in Figure 2 arrangement 9 shown.
- the receptacle 8 is designed as a circular opening on an upper side of the container 1.
- the arrangement 9 shown 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 pipeline 15 connects to a line element 14 for discharging the medium collected in the container 1.
- the line element 14 is designed as a pressure port.
- the arrangement has a further vent 30, which is provided in addition to the annular gap.
- the vent 30 is arranged above or at the level of an impeller 24 in the first housing part 11.
- the vent 30 is in the exemplary embodiment designed as an aligned arrangement of openings which are introduced in a region 25 of the first housing part 11 and in a region of the further housing part 12 which is designed as a pressure cover fitting.
- Gases in the pump escape through the vent 30 and flow through the first opening in the first housing part 11 and then through the second opening in parallel in the outer further housing part 12 into the container 1.
- FIG 3 shows a perspective view of the arrangement from below.
- the arrangement 9 has a cutter 16 for comminuting solid components of the medium.
- the medium flows into the centrifugal pump 10 through openings 17 in a housing part 18.
- 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.
- Figure 4 shows a longitudinal section through the sewage lifting plant.
- the arrangement 9 lies with an area 19, which are formed by the further housing part, on an upper container wall.
- the arrangement 9 is connected to the container 1 by means of fastening means 20.
- the fastening means 20 can be screws, for example.
- the motor 13 is surrounded by a motor housing 21.
- the motor 13 is an electric motor that has a stator and a rotor.
- the motor 13 drives a shaft 22 which is supported by a bearing arrangement 23.
- the shaft 22 is connected to an impeller 24.
- the medium flows to the impeller 24 through openings 17.
- the impeller 24 is surrounded by a first housing part 11, which is designed as a spiral housing.
- the first housing part 11 has a region 25 which is designed as an impeller fitting in the exemplary embodiment.
- the first housing part 11 has a suction area 26 on.
- the suction region 26 is designed like a hollow cylinder 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 line element 14 into a pipeline 15.
- Figure 5 shows an axial section through the container 1.
- the first housing part 11 which is designed as a spiral housing, is connected to the line element 14, which is designed as a pressure connection.
- the pressure port is cast onto the volute casing.
- a component 27 is connected downstream of the line element 14.
- the component 27 is part of a flange end plate 28.
- the component 27 is designed as a passage, which is used as a pressure line.
- Figure 6 shows an enlarged section of area B.
- Figure 5 A gap 29 is formed between the line element 14 and the component 27.
- the transition between the line element 14 and the component 27 is designed in the manner of a butt joint.
- the line element 14 and the component 27 are arranged at a distance from one another. They are preferably at an axial and / or radial distance from one another. In a favorable embodiment, the distance is 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.
- the line element 14 and the component 27 have hollow cylindrical tube sections which form an annular gap due to an axial and / or radial spacing from one another.
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- 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)
Description
Die Erfindung betrifft eine Anlage mit einem Behälter zur Zwischenspeicherung von Abwasser und einer Anordnung, die eine Kreiselpumpe aufweist, welche in dem Behälter angeordnet ist, wobei die Kreiselpumpe ein Medium in ein einen Druckstutzen bildendes Leitungselement fördert.The invention relates to a system with a container for the intermediate storage of waste water and an arrangement which has a centrifugal pump which is arranged in the container, the centrifugal pump conveying a medium into a line element forming a pressure port.
Solche Anlagen können insbesondere als Abwasserhebeanlagen ausgebildet sein. Diese leiten Wasser, das unterhalb der Rückstauebene anfällt, rückstausicher ab. Sie werden zur Förderung von fäkalienfreiem und fäkalienhaltigem Abwasser eingesetzt, das in Kellern von Wohngebäuden anfällt. In einem Behälter wird das anfallende Abwasser gesammelt. Der Füllstand wird meist über einen Niveausensor erfasst. Wird ein bestimmter Grenzwert erreicht, so schaltet sich eine Kreiselpumpe ein, welche das Abwasser aus dem Behälter herausfördert.Such systems can be designed in particular as wastewater lifting plants. These discharge water that accumulates below the backflow level backflow-proof. They are used to pump sewage that is free of faeces and contains faeces, which accumulates in the basements of residential buildings. The waste water is collected in a container. The fill level is usually recorded using a level sensor. If a certain limit is reached, a centrifugal pump switches on, which pumps the waste water out of the tank.
Der Behälter weist eine Aufnahme für eine Anordnung auf. Die Anordnung, welche eine Kreiselpumpe umfasst, die von einem Motor angetrieben wird, taucht in das Abwasser ein. Der Motor ragt aus dem Behälter heraus. Das Laufrad der Kreiselpumpe ist von einem Gehäuseteil umgeben.The container has a receptacle for an arrangement. The arrangement, which comprises a centrifugal pump driven by a motor, is immersed in the waste water. The motor protrudes from the container. The impeller of the centrifugal pump is surrounded by a housing part.
Die
Die Kreiselpumpe umfasst ein Gehäuseteil, in dem ein Laufrad angeordnet ist. Das Gehäuseteil mit dem Laufrad ragt in das Abwasser hinein. Über einen Saugstutzen wird das Abwasser angesaugt und von der Kreiselpumpe aus dem Behälter herausgefördert. Der Motor der Anordnung ist mit dem Laufrad über eine Welle verbunden.The centrifugal pump comprises a housing part in which an impeller is arranged. The housing part with the impeller protrudes into the waste water. The wastewater is sucked in via a suction nozzle and transported out of the tank by the centrifugal pump. The motor of the arrangement is connected to the impeller via a shaft.
Die Anordnung, bestehend aus dem Pumpengehäuse mit dem Laufrad und dem über eine Welle verbundenen Motor, bildet eine Einheit. Der Motorteil ragt aus dem Behälter heraus. Die Anordnung wird von Flanschringen bzw. Platten getragen. Zwischen den Flanschringen bzw. Platten und dem Behälter sind Dichtungsvorrichtungen angeordnet, sodass weder Abwasser noch unangenehme Gerüche aus dem Behälter nach draußen dringen.The arrangement, consisting of the pump housing with the impeller and the motor connected via a shaft, forms a unit. The motor part protrudes from the container. The arrangement is supported by flange rings or plates. Sealing devices are arranged between the flange rings or plates and the container, so that neither wastewater nor unpleasant smells escape from the container.
In der
Bei Anlagen mit selbstsaugenden Pumpen, die in einen Behälter integriert sind, sammelt sich häufig Luft in der Pumpe an. Daher ist eine Entlüftung erforderlich, welche der Abführung von Gas bzw. Luftansammlungen dient und damit vor dem Anfahren der Kreiselpumpe das notwendige Befüllen mit einem Fördermedium ermöglicht.In systems with self-priming pumps that are integrated in a container, air often collects in the pump. Therefore, ventilation is required, which serves to discharge gas or air accumulations and thus enables the necessary filling with a pumped medium before starting the centrifugal pump.
Bei herkömmlichen Abwasserpumpen wird beispielsweise durch offene Leitungen mit einem entsprechend großen Durchmesser eine Entlüftung gewährleistet. Der dabei auftretende Leckwasserstrom wird in Kauf genommen bzw. zur Einlaufkammer zurückgeführt. Sind Kreiselpumpen oberhalb des saugseitigen Wasserspiegels aufgestellt und besitzt deren Saugleitung ein Fußventil, so werden sie von Hand mittels Fülltrichter am Pumpensaugstutzen oder über eine Entlüftungsanlage aufgefüllt, sofern sie nicht selbst ansaugefähig sind.In conventional sewage pumps, ventilation is ensured, for example, by open lines with a correspondingly large diameter. The leakage water flow that occurs is accepted or returned to the inlet chamber. If centrifugal pumps are installed above the water level on the suction side and their suction line has a foot valve, they are filled by hand using a filling funnel on the pump suction nozzle or via a ventilation system, provided they are not self-priming.
Insbesondere bei der ersten Inbetriebnahme sowie bei niedrigen Füllständen des Behälters kann sich der Pumpenraum teilweise oder vollständig mit Luft füllen. Die angesammelte Luft muss vor oder während des Anlagenstarts abgeführt werden.The pump room can be partially or completely filled with air, especially when starting up for the first time and when the tank is low. The accumulated air must be removed before or during the start of the system.
Bei herkömmlichen Anlagen nach dem Stand der Technik wird dies beispielsweise über Bohrungen gelöst, die so angebracht sind, dass diese entweder innerhalb des Behälters liegen oder über einen Schlauch oder Ähnliches mit dem Behälter verbunden sind.In conventional systems according to the prior art, this is solved, for example, by means of bores which are provided in such a way that they either lie inside the container or are connected to the container by means of a hose or the like.
In der
In der
Häufig werden bei herkömmlichen Anlagen Bohrungen zur Entlüftung in der Druckleitung angebracht. Ein Beispiel hierfür ist die
Wird die Entlüftung im Raum hinter dem Laufrad angeordnet, kann bei Laufrädern mit rückseitiger Verrippung ein Unterdruck entstehen, wodurch Luft gezogen wird.If the ventilation is arranged in the room behind the impeller, an underpressure can arise in the case of impellers with ribs on the back, which draws air.
Weitere Pumpenanordnungen mit Entlüftungsvorrichtungen sind aus den Schriften
Aufgabe der Erfindung ist es, eine Anlage anzugeben, die eine zuverlässige Funktionsweise und einen möglichst hohen Wirkungsgrad aufweist, auch bei der Förderung von feststoffhaltigen, insbesondere faserhaltigen Medien. Die Anlage soll sich durch eine möglichst einfache Konstruktion auszeichnen und wenig störanfällig sein. Weiterhin soll die Anlage möglichst preiswert herzustellen sein und nur möglichst geringe Betriebskosten aufweisen.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 solid media, especially fiber media. The system should be characterized by the simplest possible construction and should not be susceptible to faults. Furthermore, the system should be as inexpensive to manufacture as possible and should only have the lowest possible operating costs.
Diese Aufgabe wird erfindungsgemäß durch eine Anlage mit den Merkmalen des Anspruchs 1 gelöst. Bevorzugte Varianten sind den Unteransprüchen, den Beschreibungen und den Zeichnungen zu entnehmen.This object is achieved according to the invention by a system with the features of claim 1. Preferred variants can be found in the subclaims, the descriptions and the drawings.
Erfindungsgemäß ist zwischen dem Leitungselement der Anlage und dem Durchgang des Flanschlagerschilds (28) ein ringförmig ausgebildeter Spalt zur Entlüftung der Kreiselpumpe angeordnet. Somit sind zur Entlüftung der Kreiselpumpe bei der erfindungsgemäßen Konstruktion keine zusätzlichen Entlüftungsbohrungen erforderlich. Dabei erweist es sich als besonders günstig, wenn das Leitungselement und das Bauteil einen kreisförmigen Querschnitt haben bzw. hohlzylinderartig ausgebildet sind.According to the invention, an annular gap for venting the centrifugal pump is arranged between the line element of the system and the passage of the flange shield (28). Thus, no additional ventilation holes are required for venting the centrifugal pump in the construction according to the invention. It proves to be particularly advantageous if the line element and the component have a circular cross section or are designed like a hollow cylinder.
Durch den Ringspalt zur Entlüftung tritt ein Leckagestrom, der einen Flüssigkeitsteppich erzeugt.A leakage flow occurs through the annular gap for ventilation, which creates a liquid carpet.
Bei der erfindungsgemäßen Konstruktion ist zwischen dem Leitungselement und dem Bauteil keine Dichtung mehr erforderlich. Dadurch wird eine einfache und zuverlässige Konstruktion geschaffen, die eine zuverlässige Entlüftung der Anlage gewährleistet und dadurch einen hohen Wirkungsgrad der Anlage sichert. Gegenüber herkömmlichen Anlagen können sich bei der erfindungsgemäßen Ringspaltentlüftungseinrichtung keine Bohrungen mit Feststoffen zusetzen.In the construction according to the invention, a seal is no longer required between the line element and the component. This creates a simple and reliable construction that ensures reliable ventilation of the system and thereby ensures a high level of efficiency of the system. Compared to conventional systems, no holes with solids can clog in the annular gap ventilation device according to the invention.
Bei einer besonders günstigen Variante sind das Leitungselement und das Bauteil beabstandet zueinander angeordnet. Dazu wird der Übergang von dem Leitungselement und dem Bauteil verwendet, sodass ein definierter Ringspalt entsteht.In a particularly favorable variant, the line element and the component are arranged at a distance from one another. For this, the transition from the line element and the component is used, so that a defined annular gap is created.
Vorzugsweise weisen Sie einen axialen und/oder radialen Abstand zueinander auf. Der Abstand beträgt bei einer günstigen Ausführung weniger als 2 mm, vorzugsweise weniger als 1 mm, insbesondere weniger als 0,5 mm. Als besonders vorteilhaft erweist es sich, wenn der Abstand mehr als 0,01 mm, vorzugsweise mehr als 0,05 mm, insbesondere mehr als 0,08 mm beträgt.They are preferably at an axial and / or radial distance from one another. In a favorable embodiment, the distance is 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.
Als besonders vorteilhaft erweist es sich, wenn das Leitungselement und/oder das Bauteil eine den Spalt begrenzende Fläche aufweist, die nicht plan ist. Dazu können beispielsweise Ausnehmungen in die aneinanderstoßenden Stirnseiten von dem Leitungselement und/oder Bauteil eingebracht werden. Eine solche Konstruktion gewährleistet eine zuverlässige Entlüftung, ohne dass es durch die Kapillarwirkung des Mediums bzw. die Oberflächenspannung zu einer Verringerung der Entlüftungswirkung des Spaltes kommen kann. Bei einer Variante der Erfindung weist der Ringspalt ein oder mehrere Kerben auf. Die Kerben entstehen durch das Einbringen von Ausnehmungen in das Leitungselement und/oder das daran unmittelbar anschließende Bauteil.It proves to be particularly advantageous if the line element and / or the component has a surface which delimits the gap and is not planar. For this purpose, for example, recesses can be made in the abutting end faces of the line element and / or component. Such a construction ensures reliable venting without the capillary action of the medium or the surface tension reducing the venting action of the gap. In a variant of the invention, the annular gap has one or more notches. The notches are created by making recesses in the line element and / or the component immediately adjacent to it.
Die Ausnehmungen in dem Leitungselement und/oder dem daran unmittelbar benachbarten Bauteil können unterschiedliche Formen haben, beispielsweise eckig, rund, halb, dreieckförmig und/oder rechteckförmig.The recesses in the line element and / or the component directly adjacent thereto can have different shapes, for example angular, round, half, triangular and / or rectangular.
Das Leitungselement ist erfindungsgemäß als Druckstutzen ausgebildet, in welche die Kreiselpumpe das Medium fördert. Das Bauteil ist erfindungsgemäß als Durchgang des Flanschlagerschilds ausgeführt, der als Druckleitung verwendet wird. Der Übergang der beiden Teile ist als stumpfer Stoß von zwei zylindrischen Rohrstücken ausgeführt und befindet sich innerhalb des Behälters. Dadurch entsteht ein Ringspalt, der als Entlüftung benutzt werden kann und der gleichzeitig eine flächige Strömung nach Art eines Fluidteppichs erzeugt. Bei einer besonders vorteilhaften Ausführung der Erfindung ist der Spalt so ausgerichtet, dass ein Leckagestrom aus dem Spalt ein Element anströmt, das in dem Behälter angeordnet ist. Dabei kann es sich beispielsweise um den Schwimmer einer Niveausteuerung handeln. Der Flüssigkeitsteppich wird dazu genutzt, Ablagerung an der Niveaumesseinrichtung zu verhindern bzw. zu entfernen.According to the invention, the line element is designed as a pressure port into which the centrifugal pump delivers the medium. According to the invention, the component is designed as a passage of the flange end shield, which is used as a pressure line. The transition between the two parts is a blunt joint of two cylindrical pipe sections and is located inside the container. This creates an annular gap which can be used as a vent and which at the same time creates a flat flow in the manner of a fluid carpet. In a particularly advantageous embodiment of the invention, the gap is oriented such that a leakage flow flows from the gap into an element which is arranged in the container. This can be, for example, the float of a level control. The liquid carpet is used to prevent or remove deposits on the level measuring device.
Vorzugsweise ist die Anordnung als ein Kreiselpumpenaggregat ausgebildet, das eine Einheit, die komplett montiert bzw. demontiert werden kann, bildet.The arrangement is preferably designed as a centrifugal pump unit that forms a unit that can be completely assembled or disassembled.
Es erweist sich als günstig, wenn der Motor zumindest teilweise außerhalb des Behälters angeordnet ist. Bei einer Variante ist der Motor vollständig außerhalb des Behälters positioniert.It proves to be advantageous if the motor is at least partially arranged outside the container. In one variant, the motor is positioned completely outside the container.
Das Laufrad der Kreiselpumpe ist über eine lotrechte Wellenanordnung mit dem Motor verbunden.The impeller of the centrifugal pump is connected to the motor via a vertical shaft arrangement.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der Beschreibung eines Ausführungsbeispiels anhand von Zeichnungen und aus den Zeichnungen selbst.Further features and advantages of the invention result from the description of an exemplary embodiment with reference to drawings and from the drawings themselves.
Dabei zeigt:
- Figur 1
- eine perspektivische Ansicht des Behälters der Anlage,
Figur 2- eine Seitenansicht der Anordnung,
Figur 3- eine perspektivische Ansicht der Anordnung von unten,
Figur 4- eine Schnittdarstellung der Anlage,
- Figur 5
- einen Axialschnitt durch den Behälter,
Figur 6- zeigt eine Ausschnittsvergrößerung des Bereichs B aus
Figur 5 .
- Figure 1
- a perspective view of the container of the system,
- Figure 2
- a side view of the arrangement,
- Figure 3
- a perspective view of the arrangement from below,
- Figure 4
- a sectional view of the system,
- Figure 5
- an axial section through the container,
- Figure 6
- shows an enlarged section of area B.
Figure 5 .
Der Behälter 1 weist einen in seiner Bauhöhe höher ausgebildeten Bereich mit zwei Zuläufen 2 auf und einen von der Bauhöhe niedriger ausgebildeten Bereich. Weiterhin weist der Behälter 1 einen Entleerungsanschluss 3 und ein Handloch 4 auf, das von einem Deckel verschlossen wird, der in
In
Weiterhin weist der Behälter 1 einen Entlüftungsanschluss 6 auf. Über einen am Behälter 1 angeordneten Ablauf wird das im Behälter 1 gesammelte Abwasser herausgefördert.Furthermore, the container 1 has a
Der von seiner Bauhöhe niedrigere Teil des Behälters 1 weist eine Aufnahme 8 für eine in
Die in
An ein Leitungselement 14 schließt sich eine Rohrleitung 15 zur Abführung des im Behälter 1 gesammelten Mediums an. Das Leitungselement 14 ist als Druckstutzen ausgebildet.A
Bei der in
In der Pumpe befindliche Gase entweichen durch die Entlüftung 30 und strömen dabei durch die erste Öffnung im ersten Gehäuseteil 11 und dann durch die parallel dazu ausgerichtete zweite Öffnung im äußeren weiteren Gehäuseteil 12 in den Behälter 1.Gases in the pump escape through the
Das weitere Gehäuseteil 12 weist Bereiche 19 auf, mit welchen die Anordnung auf der oberen Behälterwand aufliegt.The
Der Motor 13 ist von einem Motorgehäuse 21 umgeben. Bei dem Motor 13 handelt es sich um einen Elektromotor, der einen Stator und einen Rotor aufweist. Der Motor 13 treibt eine Welle 22 an, die von einer Lageranordnung 23 abgestützt wird.The
Die Welle 22 ist mit einem Laufrad 24 verbunden.The
Durch Öffnungen 17 strömt das Medium dem Laufrad 24 zu. Das Laufrad 24 ist von einem ersten Gehäuseteil 11 umgeben, das als Spiralgehäuse ausgeführt ist. Das erste Gehäuseteil 11 weist einen Bereich 25 auf, der im Ausführungsbeispiel als Laufradeinpass ausgebildet ist. Weiterhin weist das erste Gehäuseteil 11 einen Ansaugbereich 26 auf. Der Ansaugbereich 26 ist hohlzylinderartig ausgebildet und umschließt zumindest teilweise das Schneidwerk 16.The medium flows to the
Das Laufrad 24 ist als Radiallaufrad ausgebildet und fördert das Medium über ein abgewinkeltes Leitungselement 14 in eine Rohrleitung 15.The
An das Leitungselement 14 schließt sich stromabwärts ein Bauteil 27 an. Das Bauteil 27 ist Teil eines Flanschlagerschilds 28. Das Bauteil 27 ist als Durchgang ausgebildet, der als Druckleitung verwendet wird.A
Im Bereich des Übergangs weisen das Leitungselement 14 und das Bauteil 27 hohlzylindrische Rohrabschnitte auf, die durch eine axiale und/oder radiale Beabstandung zueinander einen Ringspalt bilden.In the area of the transition, the
- 11
- Behältercontainer
- 22nd
- ZuläufeInlets
- 33rd
- EntleerungsanschlussDrain connection
- 44th
- Deckelcover
- 55
- SensormodulSensor module
- 66
- EntlüftungsanschlussVent connection
- 88th
- Aufnahmeadmission
- 99
- Anordnungarrangement
- 1010th
- KreiselpumpeCentrifugal pump
- 1111
- erstes Gehäuseteilfirst housing part
- 1212th
- weiteres Gehäuseteilanother housing part
- 1313
- Motorengine
- 1414
- LeitungselementPipe element
- 1515
- RohrleitungPipeline
- 1616
- SchneidwerkCutting unit
- 1717th
- Öffnungenopenings
- 1818th
- GehäuseteilHousing part
- 1919th
- BereicheAreas
- 2020th
- BefestigungsmittelFasteners
- 2121
- MotorgehäuseMotor housing
- 2222
- Wellewave
- 2323
- LageranordnungBearing arrangement
- 2424th
- LaufradWheel
- 2525th
- BereichArea
- 2626
- AnsaugbereichSuction area
- 2727
- BauteilComponent
- 2828
- FlanschlagerschildFlange end shield
- 2929
- Spaltgap
- 3030th
- EntlüftungVenting
Claims (14)
- System comprising a container (1) for the temporary storage of wastewater, an assembly (9), which has a centrifugal pump (10) that is arranged in the container (1), component (27) which is part of a flanged bearing end shield (28), wherein the component is designed as a passage which is used as a pressure line, and wherein the centrifugal pump (10) pumps a medium into a line element (14) forming a pressure branch and the passage adjoining said line element,
characterized in that
a gap (29) of annular design for evacuation of the centrifugal pump (10) is formed between the line element (14) and the passage. - System according to Claim 1, characterized in that the line element (14) and the component (27) form the gap (29) through axial and/or radial spacing with respect to one another.
- System according to Claim 2, characterized in that the axial and/or radial spacing between the line element (14) and the component (27) is less than 2 mm, preferably less than 1 mm, in particular less than 0.5 mm.
- System according to Claim 2 or 3, characterized in that the axial and/or radial spacing between the line element (14) and the component (27) is more than 0.01 mm, preferably more than 0.05 mm, in particular more than 0.08 mm.
- System according to one of Claims 1 to 4, characterized in that the line element (14) and/or the component (27) have/has a nonplanar surface delimiting the gap (29).
- System according to one of Claim 5, characterized in that apertures are introduced into the line element (14) and/or the component (27).
- System according to one of Claims 5 or 6, characterized in that the gap (29) has notches.
- System according to one of Claims 1 to 7, characterized in that the line element (14) and/or the component (27) have/has tubular regions.
- System according to one of Claims 1 to 8, characterized in that the gap (29) is aligned in such a way that a leakage flow from the gap (29) impinges upon an element which is arranged in the container (1).
- System according to one of Claims 1 to 9, characterized in that the gap (29) is aligned in such a way that a leakage flow from the gap (29) impinges upon an element of a filling level measuring device.
- System according to one of Claims 1 to 10, characterized in that the evacuation feature acts in a radial direction.
- System according to one of Claims 1 to 11, characterized in that the motor (13) is arranged at least partially and preferably completely outside the container (1).
- System according to one of Claims 1 to 12, characterized in that the motor (13) is connected by a vertical shaft (22) to the impeller (24) of the centrifugal pump (10).
- System according to one of Claims 1 to 13, characterized in that the container (1) has a receptacle (8) for the assembly (9).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016200909.5A DE102016200909A1 (en) | 2016-01-22 | 2016-01-22 | vent |
PCT/EP2017/050481 WO2017125294A1 (en) | 2016-01-22 | 2017-01-11 | Evacuation device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3405681A1 EP3405681A1 (en) | 2018-11-28 |
EP3405681B1 true EP3405681B1 (en) | 2020-04-22 |
Family
ID=57777656
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17700249.0A Active EP3405681B1 (en) | 2016-01-22 | 2017-01-11 | Venting device for pump in a container |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP3405681B1 (en) |
CN (1) | CN108700087B (en) |
DE (1) | DE102016200909A1 (en) |
DK (1) | DK3405681T3 (en) |
HU (1) | HUE049734T2 (en) |
WO (1) | WO2017125294A1 (en) |
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 |
DE2913970A1 (en) | 1979-04-04 | 1980-10-23 | Hubert Combe | Pump control for sewage water handling device - disconnects pump motor after time lapse sufficient for emptying collection vessel |
DE2913967A1 (en) | 1979-04-04 | 1980-10-23 | Hubert Combe | Single pump waste water plant collecting tank - has auxiliary and main chambers with flanges forming compact square unit |
JPS5726296A (en) * | 1980-07-25 | 1982-02-12 | Hitachi Ltd | Submerged pump |
DE19913530A1 (en) | 1999-03-25 | 2000-09-28 | Ksb Ag | Level-dependent control of pumps |
JP2003014250A (en) * | 2001-06-27 | 2003-01-15 | Matsushita Electric Ind Co Ltd | Water-cooling air conditioner |
JP4039661B2 (en) * | 2002-07-16 | 2008-01-30 | 自動車電機工業株式会社 | Washer pump |
JP2004100457A (en) * | 2002-09-04 | 2004-04-02 | Koshin:Kk | Pump for sucking up bath water |
DE102007008692A1 (en) | 2007-02-20 | 2008-08-21 | Ksb Aktiengesellschaft | Level-dependent pump control device for sewage lifting installation in residential building, has sensors for detecting liquid levels, where device adjusts switching off levels of pumps based on inflow amount of liquid received by tank |
JP2011007090A (en) * | 2009-06-25 | 2011-01-13 | Kubota Corp | Exhaust structure of pump |
KR200465102Y1 (en) * | 2011-07-26 | 2013-02-01 | 손병천 | Water pump drain pipe of the tank air vent with auto drain device |
EP2573288B1 (en) * | 2011-09-22 | 2013-10-16 | Grundfos Holding A/S | Waste water hoisting facility |
JP2015169189A (en) * | 2014-03-11 | 2015-09-28 | 株式会社荏原製作所 | Discharge casing and vertical type submersible pump including the same |
-
2016
- 2016-01-22 DE DE102016200909.5A patent/DE102016200909A1/en active Pending
-
2017
- 2017-01-11 CN CN201780007606.XA patent/CN108700087B/en active Active
- 2017-01-11 WO PCT/EP2017/050481 patent/WO2017125294A1/en active Application Filing
- 2017-01-11 DK DK17700249.0T patent/DK3405681T3/en active
- 2017-01-11 EP EP17700249.0A patent/EP3405681B1/en active Active
- 2017-01-11 HU HUE17700249A patent/HUE049734T2/en unknown
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
HUE049734T2 (en) | 2020-10-28 |
EP3405681A1 (en) | 2018-11-28 |
CN108700087A (en) | 2018-10-23 |
DK3405681T3 (en) | 2020-07-27 |
DE102016200909A1 (en) | 2017-07-27 |
CN108700087B (en) | 2021-02-02 |
WO2017125294A1 (en) | 2017-07-27 |
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