WO1998049966A1 - Suction device for a free-flowing medium - Google Patents

Suction device for a free-flowing medium Download PDF

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Publication number
WO1998049966A1
WO1998049966A1 PCT/AT1998/000115 AT9800115W WO9849966A1 WO 1998049966 A1 WO1998049966 A1 WO 1998049966A1 AT 9800115 W AT9800115 W AT 9800115W WO 9849966 A1 WO9849966 A1 WO 9849966A1
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WO
WIPO (PCT)
Prior art keywords
air
medium
outlet
suction
suction device
Prior art date
Application number
PCT/AT1998/000115
Other languages
German (de)
French (fr)
Inventor
Bruno Pregenzer
Original Assignee
Bruno Pregenzer
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 Bruno Pregenzer filed Critical Bruno Pregenzer
Priority to AU70130/98A priority Critical patent/AU7013098A/en
Publication of WO1998049966A1 publication Critical patent/WO1998049966A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
    • A61C17/06—Saliva removers; Accessories therefor
    • A61C17/065—Saliva removers; Accessories therefor characterised by provisions for processing the collected matter, e.g. for separating solids or air

Definitions

  • the invention relates to a suction device for a flowable medium, with a driven device for generating suction air, and with a driven separating element for removing the medium from the suction air, which has an inlet for the air-medium mixture, a medium outlet and an air outlet.
  • Such a suction device can be found, for example, in WO-A 94/18903, which describes a dental separator.
  • the suction air transporting the medium namely a liquid-solid mixture from the mouth of a patient, is generated there by an independent suction system, which is not defined in any more detail, to which a connecting line leads from the air outlet of the separating device.
  • the invention has now set itself the task of simplifying a suction device of the type mentioned, which is achieved in that the device for generating the suction air is formed in the air outlet.
  • blades that are curved in the manner of blades are arranged in the air outlet.
  • a solid jacket centrifuge with an inwardly projecting overflow flange for the liquid can be connected to the medium outlet.
  • a suction device has a drive shaft 1 which can be rotated by a motor 2 and on which a driven separating element 4 is fixed, surrounded by a housing 3.
  • the separating element 4 comprises two boundary walls 12, 13 and vanes or webs 14 arranged between them and extending in the direction of the drive shaft 1.
  • the boundary walls 12, 13 deflect the mixture flow, so that the separation is initiated and the components to the outlets 6, which are in particular axially spaced apart for the medium and 7 for the air.
  • the boundary walls 12, 13 are bell-shaped, the upper boundary wall 12 in the drawing leaving a central entry opening in the interior divided by the wings or webs 14 into a plurality of channels.
  • the bell shape of the boundary walls comprises a central region in which the axial extent is greater than the radial extent, the boundary wall 12 in this central region having an outlet 6 which is designed as a circumferential slot and is delimited by two radially extending co-rotating flanges.
  • the boundary walls 12, 13 of the separating element 4 end approximately radially in the lowermost region of the bell shape and form an outlet 7, the distance between the two boundary walls 12, 13 from the central inlet opening to the outlet 7 preferably being reduced.
  • the arrangement is such that the outlet 7 represents an impeller of a device for generating suction air 8, which can be constructed in any suitable manner, for example as a centrifugal pump, side channel blower, water ring pump etc.
  • the suction device is used to extract a flowable medium by means of air, the mixture of air and the medium which contains a liquid and / or solids being sucked into the central region of the separating device through a mixture inlet 5 of the housing 3 and into the driven one Separating element 4 arrives.
  • the deflection of the mixture through the boundary walls 12, 13 leads to segregation, the flowable medium being discharged from the central region through the radial outlet 6 due to its higher density, while the suction air freed from the medium flows to that formed in the outlet 7 of the separating element 4 Device for generating the suction air 8 is promoted.
  • the suction device can be used for any purpose, for example in wet or
  • Dry suction devices in household and industry for air or gas cleaning of particles, bacteria, or the like, in pneumatic conveying systems, etc.
  • the flowable medium exiting through the outlet 6 can be separated further in a solid jacket centrifuge 9, which has an inwardly projecting overflow flange 10. Solids contained in the medium come to rest on the centrifuge jacket, while the lighter liquid reaches an outlet channel 11 free of solids via the overflow flange 10.

Landscapes

  • Health & Medical Sciences (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Centrifugal Separators (AREA)
  • External Artificial Organs (AREA)

Abstract

The invention relates to a suction device for a free-flowing medium. It has a driven device for producing suction air (8) and a driven separating device (4) for removing the medium from the suction air. The rotating air exit (7) of the driven separating device (4) is configured so as to produce suction air (8).

Description

Absaugeinrichtung für ein fließfähiges Medium Suction device for a flowable medium
Die Erfindung betrifft eine Absaugeinrichtung für ein fiießfähiges Medium, mit einer angetriebenen Vorrichtung zur Erzeugung von Saugluft, und mit einem angetriebenen Trenneiement zum Entfernen des Mediums aus der Saugluft, das einen Einlaß für das Luft-Mediumgemisch, einen Mediumauslaß und einen Luftauslaß aufweist.The invention relates to a suction device for a flowable medium, with a driven device for generating suction air, and with a driven separating element for removing the medium from the suction air, which has an inlet for the air-medium mixture, a medium outlet and an air outlet.
Eine derartige Absaugeinrichtung ist beispielsweise der WO-A 94/18903 zu entnehmen, die einen zahnärztlichen Abscheider beschreibt. Die das Medium, nämlich ein Flüssigkeits-Feststoffgemisch aus dem Mund eines Patienten transportierende Saugiuft wird dort von einer nicht näher definierten, unabhängigen Sauganlage erzeugt, zu der vom Luftauslaß der Trennvorrichtung eine Verbindungsleitung führt.Such a suction device can be found, for example, in WO-A 94/18903, which describes a dental separator. The suction air transporting the medium, namely a liquid-solid mixture from the mouth of a patient, is generated there by an independent suction system, which is not defined in any more detail, to which a connecting line leads from the air outlet of the separating device.
Die Erfindung hat es sich nun zur Aufgabe gestellt, eine Absaugeinrichtung der eingangs genannten Art zu vereinfachen, was dadurch erreicht wird, daß im Luftauslaß die Vorrichtung zur Erzeugung der Saugluft ausgebildet ist.The invention has now set itself the task of simplifying a suction device of the type mentioned, which is achieved in that the device for generating the suction air is formed in the air outlet.
Bevorzugt ist dabei vorgesehen, daß im Luftauslaß schaufelartig gekrümmte Flügel angeordnet sind.It is preferably provided that blades that are curved in the manner of blades are arranged in the air outlet.
Um den benötigten Saugluftunterdruck zu erzeugen, ist eine bestimmte Umfangsgeschwindigkeit des Trennelementes am Luftauslaß erforderlich, die sich aus der Drehzahl der Antriebswelle und dem radialen Abstand des Luftauslasses von der Antriebswelle ergibt. Es ist daher an sich von untergeordneter Bedeutung, wo der Einlaß für das Gemisch und der Auslaß für die Luft angeordnet ist. Platzsparende Konstruktionen, bei denen der Luftauslaß des Trennelementes den maximalen Durchmesser bestimmt, sehen vor, daß der Luftauslaß von der Drehachse des Trennelementes radial weiter entfernt ist als der Gemischeinlaß und/oder als der Mediumauslaß.In order to generate the required vacuum negative pressure, a certain peripheral speed of the separating element at the air outlet is required, which results from the speed of the drive shaft and the radial distance of the air outlet from the drive shaft. It is therefore of minor importance per se where the inlet for the mixture and the outlet for the air are arranged. Space-saving constructions in which the air outlet of the separating element determines the maximum diameter provide that the air outlet is radially further away from the axis of rotation of the separating element than the mixture inlet and / or the medium outlet.
Um das durch den Mediumauslaß ausgetragene Medium in Flüssigkeit und enthaltene Feststoffe weiter zu trennen, kann an den Mediumauslaß eine Vollmantelzentrifuge mit nach innen vorspringendem Überiaufflansch für die Flüssigkeit angeschlossen sein. Die Erfindung wird nachstehend an Hand der Figuren der beiliegenden Zeichnung näher beschrieben, ohne darauf beschränkt zu sein. Diese zeigt einen schematischen Teillängsschnitt durch eine Absaugeinrichtung.In order to further separate the medium discharged through the medium outlet into liquid and contained solids, a solid jacket centrifuge with an inwardly projecting overflow flange for the liquid can be connected to the medium outlet. The invention is described below with reference to the figures of the accompanying drawing, without being limited thereto. This shows a schematic partial longitudinal section through a suction device.
Eine Absaugeinrichtung weist eine von einem Motor 2 in Drehung versetzbare Antriebswelle 1 auf, auf der von einem Gehäuse 3 umgeben ein angetriebenes Trennelement 4 fixiert ist. Das Trennelement 4 umfaßt zwei Begrenzungswände 12, 13 und dazwischen angeordnete sich in Richtung der Antriebswelle 1 erstreckende Flügel bzw. Stege 14. Die Begrenzungswände 12, 13 lenken den Gemischstrom um, sodaß die Trennung eingeleitet und die Bestandteile zu den voneinander insbesondere axial beabstandeten Auslässen 6 für das Medium und 7 für die Luft geführt werden. Im dargestellten Ausführungsbeispiel sind die Begrenzungswände 12, 13 glockenartig ausgebildet, wobei die in der Zeichnung obere Begrenzungswand 12 eine zentrale Eintrittsöffnung in den von den Flügeln bzw. Stegen 14 in mehrere Kanäle unterteilten Innenraum freiläßt. Die Glockenform der Begrenzungswände umfaßt einen mittleren Bereich, in dem die Axialerstreckung größer als die Radialerstreckung ist, wobei die Begrenzungswand 12 in diesem mittleren Bereich einen Auslaß 6 aufweist, der als umfänglicher Schlitz ausgebildet und durch zwei sich radial erstreckende, mitrotierende Flansche begrenzt ist. Die Begrenzungswände 12, 13 des Trennelementes 4 enden im untersten Bereich der Glockenform annähernd radial, und bilden einen Auslaß 7, wobei sich der Abstand zwischen den beiden Begrenzungswänden 12, 13 von der zentralen Eintrittsöffnung zum Auslaß 7 hin vorzugsweise verringert. Die Flügel bzw. Stege 14, die bevorzugt schaufelartig gekrümmt sind, enden am Auslaß 7. Die Anordnung ist dabei so, daß der Auslaß 7 ein Laufrad einer Vorrichtung zur Erzeugung von Saugluft 8 darstellt, die konstruktiv in jeder geeigneten Weise ausgebildet sein kann, beispielsweise als Kreiselpumpe, Seitenkanalverdichter, Wasserringpumpe usw.A suction device has a drive shaft 1 which can be rotated by a motor 2 and on which a driven separating element 4 is fixed, surrounded by a housing 3. The separating element 4 comprises two boundary walls 12, 13 and vanes or webs 14 arranged between them and extending in the direction of the drive shaft 1. The boundary walls 12, 13 deflect the mixture flow, so that the separation is initiated and the components to the outlets 6, which are in particular axially spaced apart for the medium and 7 for the air. In the illustrated embodiment, the boundary walls 12, 13 are bell-shaped, the upper boundary wall 12 in the drawing leaving a central entry opening in the interior divided by the wings or webs 14 into a plurality of channels. The bell shape of the boundary walls comprises a central region in which the axial extent is greater than the radial extent, the boundary wall 12 in this central region having an outlet 6 which is designed as a circumferential slot and is delimited by two radially extending co-rotating flanges. The boundary walls 12, 13 of the separating element 4 end approximately radially in the lowermost region of the bell shape and form an outlet 7, the distance between the two boundary walls 12, 13 from the central inlet opening to the outlet 7 preferably being reduced. The wings or webs 14, which are preferably curved like blades, end at the outlet 7. The arrangement is such that the outlet 7 represents an impeller of a device for generating suction air 8, which can be constructed in any suitable manner, for example as a centrifugal pump, side channel blower, water ring pump etc.
Die Absaugeinrichtung dient zur Absaugung eines fließfähigen Mediums mittels Luft, wobei das Gemisch aus Luft und dem Medium, das eine Flüssigkeit und/oder Feststoffe enthält, in den zentralen Bereich der Trennvorrichtung durch einen Gemischeinlaß 5 des Gehäuses 3 eingesaugt wird und in das angetriebene Trennelement 4 gelangt. Die Umlenkung des Gemisches durch die Begrenzungswände 12, 13 führt zu einer Entmischung, wobei das fließfähige Medium aufgrund seiner höheren Dichte durch den radialen Auslaß 6 aus dem mittleren Bereich ausgetragen wird, während die vom Medium befreite Saugluft zu der im Auslaß 7 des Trennelementes 4 ausgebildeten Vorrichtung zur Erzeugung der Saugluft 8 weitergefördert wird. Die Absaugeinrichtung läßt sich für beliebige Verwendungszwecke einsetzen, beispielsweise in Naß- oderThe suction device is used to extract a flowable medium by means of air, the mixture of air and the medium which contains a liquid and / or solids being sucked into the central region of the separating device through a mixture inlet 5 of the housing 3 and into the driven one Separating element 4 arrives. The deflection of the mixture through the boundary walls 12, 13 leads to segregation, the flowable medium being discharged from the central region through the radial outlet 6 due to its higher density, while the suction air freed from the medium flows to that formed in the outlet 7 of the separating element 4 Device for generating the suction air 8 is promoted. The suction device can be used for any purpose, for example in wet or
Trockensaugeinrichtungen in Haushalt und Industrie, für die Luft- oder Gasreinigung von Partikeln, Bakterien, od. dgl., in pneumatischen Förderanlagen, usw.Dry suction devices in household and industry, for air or gas cleaning of particles, bacteria, or the like, in pneumatic conveying systems, etc.
Das durch den Auslaß 6 austretende fließfähige Medium kann, in einer Vollmantelzentrifuge 9, die einen nach innen vorstehenden Überlaufflansch 10 aufweist, weiter getrennt werden. Im Medium enthaltene Feststoffe legen sich an den Zentrifugenmantel an, während die leichtere Flüssigkeit über den Überlaufflansch 10 feststofffrei in einen Auslaßkanal 11 gelangt. The flowable medium exiting through the outlet 6 can be separated further in a solid jacket centrifuge 9, which has an inwardly projecting overflow flange 10. Solids contained in the medium come to rest on the centrifuge jacket, while the lighter liquid reaches an outlet channel 11 free of solids via the overflow flange 10.

Claims

Patentansprüche: Claims:
1. Absaugeinrichtung für ein fließfähiges Medium, mit einer angetriebenen Vorrichtung zur Erzeugung von Saugluft (8), und mit einem angetriebenen Trennelement (4) zum Entfernen des Mediums aus der Saugluft, das einen Einlaß (5) für das Luft- Mediumgemisch, einen Mediumauslaß (6) und einen Luftauslaß (7) aufweist, dadurch gekennzeichnet, daß im Luftauslaß (7) die Vorrichtung zur Erzeugung der Saugluft (8) ausgebildet ist.1. Suction device for a flowable medium, with a driven device for generating suction air (8), and with a driven separating element (4) for removing the medium from the suction air, which is an inlet (5) for the air-medium mixture, a medium outlet (6) and has an air outlet (7), characterized in that the device for generating the suction air (8) is formed in the air outlet (7).
2. Absaugeinrichtung nach Anspruch 1 , dadurch gekennzeichnet, daß im Luftauslaß (7) schaufelartig gekrümmte Flügel (14) angeordnet sind.2. Suction device according to claim 1, characterized in that in the air outlet (7) blade-like curved wings (14) are arranged.
3. Absaugeinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Luftauslaß (7) von der Drehachse des Trennelementes (4) radial weiter entfernt ist als der Gemischeinlaß (5).3. Suction device according to claim 1 or 2, characterized in that the air outlet (7) from the axis of rotation of the separating element (4) is radially further away than the mixture inlet (5).
4. Absaugeinrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Luftausiaß (7) von der Drehachse des Trennelementes (4) radial weiter entfernt ist als der Mediumauslaß (6).4. Suction device according to one of claims 1 to 3, characterized in that the air outlet (7) from the axis of rotation of the separating element (4) is radially further away than the medium outlet (6).
5. Absaugeinrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß an den Mediumauslaß (6) eine Vollmantelzentrifuge (9) mit nach innen vorspringendem Überlaufflansch (10) für die Flüssigkeit anschließt. 5. Suction device according to one of claims 1 to 4, characterized in that a solid jacket centrifuge (9) with inwardly projecting overflow flange (10) for the liquid connects to the medium outlet (6).
PCT/AT1998/000115 1997-05-05 1998-05-05 Suction device for a free-flowing medium WO1998049966A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU70130/98A AU7013098A (en) 1997-05-05 1998-05-05 Suction device for a free-flowing medium

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA766/97 1997-05-05
AT0076697A AT405366B (en) 1997-05-05 1997-05-05 SUCTION DEVICE FOR A FLOWABLE MEDIUM

Publications (1)

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WO1998049966A1 true WO1998049966A1 (en) 1998-11-12

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AU (1) AU7013098A (en)
WO (1) WO1998049966A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0400431A2 (en) * 1989-05-23 1990-12-05 Dürr-Dental GmbH & Co. KG Separation unit
EP0441410A1 (en) * 1984-12-17 1991-08-14 Werner Trawöger Procedure to separate solid particles from liquid particles of a dental mixture
EP0535715A2 (en) * 1987-11-03 1993-04-07 Werner Trawöger Separator
WO1994018903A1 (en) 1993-02-18 1994-09-01 Trawoeger Werner Process and separator for removing conveying suction air from a conveyed medium

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0441410A1 (en) * 1984-12-17 1991-08-14 Werner Trawöger Procedure to separate solid particles from liquid particles of a dental mixture
EP0535715A2 (en) * 1987-11-03 1993-04-07 Werner Trawöger Separator
EP0400431A2 (en) * 1989-05-23 1990-12-05 Dürr-Dental GmbH & Co. KG Separation unit
WO1994018903A1 (en) 1993-02-18 1994-09-01 Trawoeger Werner Process and separator for removing conveying suction air from a conveyed medium

Also Published As

Publication number Publication date
AT405366B (en) 1999-07-26
AU7013098A (en) 1998-11-27
ATA76697A (en) 1998-12-15

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