EP0605471B1 - Pompe a disque en nutation - Google Patents

Pompe a disque en nutation Download PDF

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Publication number
EP0605471B1
EP0605471B1 EP92918927A EP92918927A EP0605471B1 EP 0605471 B1 EP0605471 B1 EP 0605471B1 EP 92918927 A EP92918927 A EP 92918927A EP 92918927 A EP92918927 A EP 92918927A EP 0605471 B1 EP0605471 B1 EP 0605471B1
Authority
EP
European Patent Office
Prior art keywords
swash plate
pump
medium
pump chamber
pumped
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.)
Expired - Lifetime
Application number
EP92918927A
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German (de)
English (en)
Other versions
EP0605471A1 (fr
Inventor
Thomas Heng
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KSB AG
Original Assignee
KSB AG
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Filing date
Publication date
Application filed by KSB AG filed Critical KSB AG
Publication of EP0605471A1 publication Critical patent/EP0605471A1/fr
Application granted granted Critical
Publication of EP0605471B1 publication Critical patent/EP0605471B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C9/00—Oscillating-piston machines or pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F04C13/005—Removing contaminants, deposits or scale from the pump; Cleaning
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C13/00—Adaptations of machines or pumps for special use, e.g. for extremely high pressures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C9/00—Oscillating-piston machines or pumps
    • F04C9/005—Oscillating-piston machines or pumps the piston oscillating in the space, e.g. around a fixed point

Definitions

  • a swash plate pump on which the invention is based works according to the following principle.
  • a swashplate shaft describing a double cone about the central axis of the drive shaft, is moved. Due to the inclined position of the swash plate shaft with respect to the center axis of the drive shaft, a swash plate standing perpendicular to the swash plate shaft executes a wobble movement around a wobble point lying on the center axis of the drive shaft.
  • An intermediate wall penetrating the swash plate and extending in the axial direction of the drive shaft divides the pump chamber into a suction-side and a pressure-side part. The moving swashplate creates two rotating, variable-volume delivery spaces within the pump chamber.
  • Such a swash plate pump is known from DE-B-1 090 966, in which the swash plate is arranged in a pump chamber whose housing wall surfaces opposite the swash plate are conical.
  • the pump chamber level is perpendicular to the drive shaft level. Due to the swash plate arranged obliquely in the pump chamber, the conveying spaces of variable volume are formed on both sides of the swash plate.
  • the swash plate moving in the pump chamber is designed as a circular ring which is arranged with its inner diameter on a spherical surface of a swash plate hub. This spherical surface is in correspondingly shaped counter surfaces of the pump housing enclosing the pump chamber are mounted.
  • the invention specified in claim 1 is based on the problem of creating a swash plate pump with extremely high self-cleaning ability for the conveyance of time-critical, time-changing media, in particular foods or biological solutions.
  • the advantages that can be achieved with the invention enable the use of this pump in biotechnology, food technology or in the conveyance of sensitive media. Due to the flow through the side rooms, it can be sterilized when installed. According to the invention, the entire space into which the conveying medium can penetrate from the pump chamber, in particular the side spaces, is incorporated into the line system of the pump or the conveying medium through lines, channels or the like and flows continuously or controllably through the conveying medium.
  • the dwell time of a particle of the conveying medium can thus be influenced, deposits or crystallization of the same can be prevented or at least considerably restricted. Complete cleaning of all components that come into contact with the medium is guaranteed without disassembly. For cleaning, it is sufficient to have the pump deliver a rinsing liquid in order to remove all product residues from the housing.
  • the side rooms each have at least one connection for the entry and exit of the medium.
  • the appropriate sequence in the flow through the rooms can be selected. The formation of deposits is thus prevented to a certain extent in the sense of continuous cleaning. It is irrelevant whether the full flow flows through these side spaces or only a partial flow during operation of the pump. It is even possible to temporarily dispense with the flow through the side spaces in the normal operating state, depending on the pumped medium.
  • the embodiment according to claim 5 significantly simplifies the manufacture of the pump and increases the tightness of the pump and thus its efficiency.
  • the pump chamber is delimited by two side parts, an intermediate ring with a spherical inner surface and the spherical surface of the swash plate with a smaller diameter. With its spherical inner surface and the circular ring of the swash plate, the ring forms the dynamic sealing of the delivery chambers from one another. Due to the structural division of the pump chamber walls, only one component is provided with a spherical inner surface for the external sealing of the swash plate outer diameter. The parting line between the components of the pump chamber does not run in the spherical surface, but two parting lines are placed on the side surfaces.
  • the spherical inner surface is a sealing surface for sealing the delivery chambers, and the outer diameter of the swash plate is moved over this surface. By shifting the parting line to the side surface, the best possible match of the outer contours is achieved to achieve the tightness.
  • This design of the pump chamber with separate side surfaces and ring is made possible by a recess in the ring.
  • the swashplate is inserted into the ring in a vertical orientation, placed concentrically and brought into the operational position by pivoting. An intermediate wall is then anchored at the location of the recess and sealed against the ring. The minimum width of the recess is determined from the width of the swash plate.
  • the development according to claim 6 teaches, inter alia, the use of an intermediate wall in which elastic sealing elements are provided between the intermediate wall and the side walls for sealing against the side walls.
  • This can be a vulcanized layer on the intermediate wall, it is but also independent sealing elements can be used.
  • the partition is installed in the ring at the location of the recess after the swash plate is installed. It has a spherical surface with the same radius as the spherical surface carrying the swash plate and sits on it while maintaining a sealing gap.
  • the partition is dimensioned so that there is still a space between it and the ring.
  • An elastic seal is inserted in this to seal the partition against the ring. This elastic seal exerts a contact pressure on the adapter and creates a gap-free static seal on the side walls.
  • the development according to claim 7 forms a double static seal of the pump chamber against the atmosphere. This increases the area of application of the pump for pumping aggressive or toxic media. If the second static seal applied by the pumped medium fails, the first static seal functions as additional protection.
  • the development according to claim 8 enables high mobility of the second static seal through the use of an elastic membrane.
  • the space enclosed between the first and second static seals can be filled with a liquid. Since liquids are considered incompressible and the volume of the space divided by the membrane remains constant, no pressure difference is built up on the membrane. Rather, the same pressure prevails on both sides of it and the membrane is only stressed by the wobble movement.
  • FIG. 1 shows a swash plate pump, in which a swash plate shaft (1) is moved by a drive (not shown), describing a double-conical surface, about a wobble point (2).
  • the wobble point (2) coincides with the center of the spherical surface (3) of the swash plate (4) and the spherical inner surface (5) of a ring (6).
  • these surfaces delimit a pump chamber (11) of a first side part (9) on the drive side, which has a central opening, and a second side part (10).
  • the swash plate shaft (1) can be connected to the swash plate (4) in different ways, for example welding, screwing or the like.
  • the swash plate (4) can be made in one piece to achieve the greatest possible precision. Of course, a construction composed of several parts is also possible.
  • the outer edge of the The circular ring (12) of the swash plate (4) is preferably designed with a contour corresponding to the spherical inner surface (5) in order to achieve a dynamic seal.
  • the pump chamber (11) is sealed against the interior of the pump by dynamic sealing between the spherical surface (3) and the corresponding spherical surfaces (13, 14) of the side parts (9, 10).
  • the swash plate (4) can also be supported at these points. Due to the gap of the dynamic seal on the spherical surfaces (3, 13, 14), the side spaces (15, 16) of the pump are acted upon by the pumped medium.
  • the side space (15) acted upon by the pumped medium is closed off by means of a membrane (17).
  • the membrane (17) is attached to the spherical surface (3) and on the side part (9) and is statically sealed there.
  • the membrane (17) does not have to be designed to accommodate the pressure difference from the atmosphere.
  • the pressure difference is in this embodiment of a further sealing element, e.g. in the form of a bellows (18) shown here.
  • a space (19) through which there is no flow is located between the bellows (18) and the membrane (17). This can be filled with a control medium. Since the membrane (17) is elastic and deformable, the same hydrostatic pressure is established in the space (19) as in the side space (15) and the membrane (17) is only subjected to deformation.
  • the bellows (18) absorbs the pressure difference and follows the wobbling movement of the swash plate (4) with elastic deformation of the folds. It statically seals the space (19) against the atmosphere and against the storage space (20) of the swash plate shaft (1).
  • the bellows (18) is attached at one end to the tumbling part and at the other end to a fixed housing part, here for example in the form of a cover (21) with a central opening for the passage of the swash plate shaft (1).
  • the bellows (18) secures the swash plate (4) against rotation around the Central axis of the bellows (18).
  • this anti-rotation device can also be made in other known ways.
  • the cover (21) also seals the membrane (17) and is connected to the side part (9).
  • the side part (9) is provided with connections (C, D) through which the side space (15) can be fully included in the flow.
  • Connections (A, B) are provided on the side part (10) for the flow through the side space (16).
  • the sequence of the flow through the side spaces (15, 16) and the pump chamber (11) can be selected according to the respective operating conditions.
  • the side spaces (15, 16) can be flowed through before the pumping medium enters the pump chamber (11) or after the pumping medium exits the pump chamber (11).
  • the housing of the swash plate pump is held together by known means.
  • a feature of the swash plate pump is the separation of the suction and pressure sides of the pump chamber (11) by an intermediate wall (22) arranged transversely to the pump chamber (11).
  • the circular ring (12) of the swash plate (4) has a recess with at least the wall thickness of the intermediate wall (22). Since the wobble movement of the swash plate (4) in the pump chamber (11) is composed of two superimposed rotary movements about the two axes spanning the central axis of the pump chamber (11), the surfaces of the recess facing the partition wall lead to a relative movement the fixed partition (22). The minimum width of the recess depends on the shape of its surface. The surfaces of the recess do not have to have a sealing function with the intermediate wall (22). It is also possible to allow a greater play between the surfaces of the recess and the intermediate wall (22).
  • the partition (22) sits with play on the spherical surface (3), is provided with a corresponding sealing surface (23) and is e.g. in the side parts (9, 10) anchored by dowel pins (24).
  • An elastic coating (25) of the side flanks of the intermediate wall (22) ensures the static sealing by contacting the side surfaces (7, 8).
  • other forms of static sealing are also conceivable.
  • the side rooms (15, 16) as well as the room (19) and the storage room (20) can be provided with a monitoring device (not shown here). This enables an early detection of a seal leak.
  • the space (19) in particular can be filled with a control medium, the change of which can be monitored with sensors.
  • a medium that is compatible with the pumped medium is suitable as the control medium.
  • the cleaning process is carried out by introducing a rinsing liquid into the side spaces (15, 16) and into the pump chamber (11). During the cleaning process, the cleaning liquid comes into contact with all surfaces and rooms affected by the medium.
  • a rinsing liquid comes into contact with all surfaces and rooms affected by the medium.
  • the Conveyor operation of the swash plate pump takes place when the side spaces (15, 16) flow through, a continuous self-cleaning process and limits the dwell time of a particle of the pumped medium in the pump. This enables the conveyance of sensitive, time-critical media.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Reciprocating Pumps (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Details Of Reciprocating Pumps (AREA)

Claims (9)

  1. Pompe à disque en nutation, dans laquelle, à l'aide d'un axe de disque en nutation (1), un disque en nutation (4), dans une chambre de pompe (11) formée par deux surfaces latérales (7, 8) et, entre elles, des surfaces internes et externes (3, 5) sphériques placées sur des diamètres divers, effectue un mouvement de nutation, dans laquelle le disque en nutation (4) est muni d'une bague circulaire (12) placée sur une surface sphérique (3), dans laquelle une paroi intermédiaire (22) partageant la bague circulaire (12) du disque en nutation (4) et formant l'ouverture d'aspiration et de refoulement est placée dans le boîtier, avec au moins un premier espace latéral (16) placé à une face du disque en nutation à l'opposé d'un entraînement ainsi qu'avec un second espace latéral (15) placé à une face du disque en nutation dirigée vers l'entraînement, ces deux espaces étant, à partir de la chambre de pompe (11), remplis du liquide de refoulement après passage de joints dynamiques, un premier joint élastique statique (18) étant prévu pour fermer l'espace rempli de liquide de refoulement contre l'arbre du disque en nutation (1), caractérisée en ce que des espaces (15, 16) remplis de liquide de refoulement sont reliés à la zone d'aspiration et/ou de refoulement de la pompe et sont traversés par le liquide en continu ou de manière régulée dans le sens du courant de refoulement.
  2. Pompe à disque en nutation selon la revendication 1 caractérisée en ce que le liquide traverse un espace latéral avant d'entrer dans la chambre de pompe (11) et un autre espace latéral après être sorti de la chambre de pompe (11).
  3. Pompe à disque en nutation selon la revendication 1 caractérisée en ce que le liquide traverse les espaces latéraux avant d'entrer dans la chambre de pompe (11).
  4. Pompe à disque en nutation selon la revendication 1 caractérisée en ce que le liquide traverse les espaces latéraux après être sorti de la chambre de pompe (11).
  5. Pompe à disque en nutation selon la revendication 1 et une des revendications 2 à 4 caractérisée en ce que les surfaces latérales (7, 8) sont accolées à une bague (6) située entre elles à surface interne (5) sphérique et que la bague (6) possède, dans la surface interne (5) entre des ouvertures (27, 28) d'entrée et de sortie situées sur la circonférence, un évidement (26) dont la largeur correspond au moins à la largeur de la bague circulaire (12) du disque en nutation (4).
  6. Pompe à disque en nutation selon la revendication 5 caractérisée en ce que la paroi intermédiaire (22) présente, sur le côté tourné vers la surface sphérique (3) du disque en nutation (4), une surface sphérique (23) lui correspondant, en ce que la paroi intermédiaire (22) est reliée aux surfaces latérales (7, 8) de la chambre de pompe (11) et étanchéisée statiquement par rapport aux surface latérales (7, 8) et à la bague (6) par des éléments d'étanchéité élastiques (25, 29).
  7. Pompe à disque en nutation selon l'une ou plusieurs des revendications 1 à 6 caractérisée en ce qu'un second joint élastique (17) est placé en amont d'un premier joint (18) statique élastique, dans laquelle le second espace latéral (15) soumis à la pression du liquide est placé entre le joint dynamique sur les surfaces sphériques (3, 13) et le second joint statique élastique (17).
  8. Pompe à disque en nutation selon la revendication 7 caractérisée en ce que le second joint statique (17) est une membrane élastique.
  9. Pompe à disque en nutation selon les revendications 7 et 8 caractérisée en ce que l'espace (19) entre le premier et le second joint statique est rempli d'un liquide de contrôle et relié à un dispositif de surveillance.
EP92918927A 1991-09-23 1992-09-08 Pompe a disque en nutation Expired - Lifetime EP0605471B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4131628A DE4131628A1 (de) 1991-09-23 1991-09-23 Taumelscheibenpumpe
DE4131628 1991-09-23
PCT/EP1992/002076 WO1993006371A1 (fr) 1991-09-23 1992-09-08 Pompe a disque en nutation

Publications (2)

Publication Number Publication Date
EP0605471A1 EP0605471A1 (fr) 1994-07-13
EP0605471B1 true EP0605471B1 (fr) 1995-07-19

Family

ID=6441271

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92918927A Expired - Lifetime EP0605471B1 (fr) 1991-09-23 1992-09-08 Pompe a disque en nutation

Country Status (9)

Country Link
US (1) US5454699A (fr)
EP (1) EP0605471B1 (fr)
JP (1) JP2742727B2 (fr)
KR (1) KR100236027B1 (fr)
AT (1) ATE125334T1 (fr)
CA (1) CA2117201C (fr)
DE (2) DE4131628A1 (fr)
DK (1) DK0605471T3 (fr)
WO (1) WO1993006371A1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ155695A3 (en) * 1992-12-16 1996-01-17 Hofmann Manfred Machine with whirling piston
DE4405945C2 (de) * 1994-02-24 1998-07-09 Klein Schanzlin & Becker Ag Taumelscheibenpumpe mit durchströmten Seitenräumen
SE510007C2 (sv) * 1994-11-03 1999-03-29 Tetra Laval Holdings & Finance Pump med vridbar och fram och åter rörlig kolv
US5980225A (en) * 1996-07-05 1999-11-09 Sundstrand Fluid Handling Corporation Rotary pump having a drive shaft releasably connected to the rotor
KR100419142B1 (ko) * 1999-03-18 2004-02-14 김종대 자이로 펌프
RU2271475C2 (ru) * 2004-02-24 2006-03-10 Сергей Сергеевич Кочанов-Сорокин Роторный насос
WO2007084014A1 (fr) * 2006-01-18 2007-07-26 Swashpump Technologies Limited Ameliorations de pompes a plateau oscillant
SE531601C2 (sv) * 2007-10-11 2009-06-02 Itt Mfg Enterprises Inc Pump, krängningsskivpump och sönderdelningsarrangemang i pumpar
NZ592364A (en) 2008-10-23 2013-05-31 Swashpump Technologies Ltd Integrated swash plate pump and motor for compressible and elastic fluids such as explosive gases
NZ582354A (en) 2009-12-24 2010-05-28 Swashpump Technologies Ltd Non-rotating nutating plate pump with compound spherical bearing
WO2019081967A1 (fr) * 2017-10-26 2019-05-02 Paul Zehnder Machine à plateau oscillant avec entraînement
WO2019081966A1 (fr) 2017-10-26 2019-05-02 Paul Zehnder Pompe à disque en nutation
DE202018106140U1 (de) 2018-10-26 2018-11-07 Paul Zehnder Taumelscheibenpumpe
DE102021114237A1 (de) 2021-06-01 2022-12-01 Pumpsystems Gmbh Taumelringpumpe für Lebensmittel

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1143675A (fr) * 1900-01-01
US2329604A (en) * 1941-07-14 1943-09-14 Aro Equipment Corp Fluid meter
DE1090966B (de) * 1954-10-29 1960-10-13 Richard T Cornelius Taumelscheibenpumpe
GB861332A (en) * 1959-03-02 1961-02-15 Richard Thomas Cornelius Pulsation reducing wabble pump structure
DE1277673B (de) * 1965-11-12 1968-09-12 Reginald Clarence Ford Pumpe mit Nutationsscheibe
DE2617516A1 (de) * 1976-04-22 1977-11-03 Fritz Reis Kolbenmaschine fuer stroemende medien
FI873787A7 (fi) * 1987-09-04 1989-03-02 Altukhova, Lilia Vsevolodovna Foerbaettring roerande membranmaskin.
DE3831068A1 (de) * 1988-09-13 1990-03-22 Sihi Gmbh & Co Kg Verfahren zur reinigung einer stoffbuchslosen, rotierend arbeitenden foerdereinrichtung fuer fluide
DE3905419A1 (de) * 1989-02-22 1990-08-30 Richter Chemie Technik Gmbh Verfahren zur verminderung von mit foerderfluessigkeit gefuellten totraeumen in pumpen und pumpe mit vermindertem totraum
US5125809A (en) * 1990-03-27 1992-06-30 Product Research And Development Wobble plate pump

Also Published As

Publication number Publication date
WO1993006371A1 (fr) 1993-04-01
DE4131628A1 (de) 1993-03-25
CA2117201A1 (fr) 1993-04-01
US5454699A (en) 1995-10-03
KR100236027B1 (ko) 1999-12-15
EP0605471A1 (fr) 1994-07-13
DE59202979D1 (de) 1995-08-24
JP2742727B2 (ja) 1998-04-22
CA2117201C (fr) 2002-07-23
DK0605471T3 (da) 1995-12-04
ATE125334T1 (de) 1995-08-15
KR940702589A (ko) 1994-08-20
JPH06506750A (ja) 1994-07-28

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