EP0302386A2 - Centrifugal separator with axial inlets and outlets - Google Patents

Centrifugal separator with axial inlets and outlets Download PDF

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Publication number
EP0302386A2
EP0302386A2 EP88112188A EP88112188A EP0302386A2 EP 0302386 A2 EP0302386 A2 EP 0302386A2 EP 88112188 A EP88112188 A EP 88112188A EP 88112188 A EP88112188 A EP 88112188A EP 0302386 A2 EP0302386 A2 EP 0302386A2
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EP
European Patent Office
Prior art keywords
rings
liquid
machine
treated
duct
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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
Application number
EP88112188A
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German (de)
French (fr)
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EP0302386A3 (en
EP0302386B1 (en
Inventor
Remo Zuccato
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Frau SpA
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Frau SpA
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Priority to AT88112188T priority Critical patent/ATE102496T1/en
Publication of EP0302386A2 publication Critical patent/EP0302386A2/en
Publication of EP0302386A3 publication Critical patent/EP0302386A3/en
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Publication of EP0302386B1 publication Critical patent/EP0302386B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
    • B04B1/04—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
    • B04B1/08—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape

Definitions

  • the present invention relates to a centrifugal liquid separator, more particularly intended for use in the dairy industry, but which can also be used for mineral or vegetable oils or for other liquid mixtures, the effect of force centrifugal acting on said liquids to separate their constituents having different densities.
  • liquids of different densities separated by centrifugation by means of the apparatus are directed upwards inside concentric annular conduits formed in the rotating part of the machine, in order then to be sent into different destinations through conduits made in the fixed head of said machine.
  • the fixed head of the machine is very simplified and the seal between the different axial conduits is obtained using profiled rings, movable relative to the fixed parts of the machine and which come into contact with fixed rings. relative to the rotating parts of the machine, under the effect of the pressure itself of the liquids which acts on these movable rings, which makes it possible above all to obtain a considerable simplification of the hydraulic circuits while making it possible to eliminate the presence of springs of any type, thereby facilitating the control and maintenance of the machine.
  • sealing rings are directly licked by the constituents of the liquids treated in the machine, which results in the absorption of the heat produced by the movement of said rings and avoids the need to have to ensure their cooling using the water circulation provided for in the aforementioned patent application.
  • the single figure of this drawing is a partial axial section showing the upper part of the centrifugal separator according to the invention.
  • the liquid to be treated enters the centrifugal separator through the central duct 1 to come out, in the state separated from its two phases with different specific weights, through the co-axial ducts 2 and 3.
  • the phase with lower specific gravity which goes up through the innermost co-axial duct 2 is brought to the duct co-axial 4 provided in the fixed head of the machine to lead into outlet outlets, while the highest specific weight phase which rises through the outer co-axial duct 3 escapes through the outlet mouth 5 formed in the fixed part of the machine.
  • the seal between the central inlet duct 1 and the first co-axial outlet duct 2 is provided by the ring 6, which is fixed to the central part 7 of the rotor and against which the movable ring is applied. 8, provided co-axially to the central duct 1, which ring comes through its upper lip 8 ′ in contact with the fixed ring 6, under the effect of thrust of the pressure of the liquid in the duct 1, pressure which is exerted according to the direction indicated by the arrows 9.
  • the stop circlip 10 carried by the central tube which forms the duct 1 limits the movements of the movable ring 8 in the direction of the opening.
  • the external sealing is ensured by the movable ring 17 provided co-axially with the outlet mouth 5 and limited in its movements by the stop circlip 18 carried by the outer wall of the tube which forms the mouth 5 and by the fixed ring 19 welded to the head 20 of the machine.

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  • Centrifugal Separators (AREA)

Abstract

The liquid to be treated enters via the central channel (1) to leave, in the form of two liquid phases of different densities, through the conduits (4, 5), sealing discs (6, 11, 19) being mounted respectively on the central body (7), on the intermediate disc (12) and on the upper cover (20) of the machine. Resting against these discs are movable rings (8, 13, 14, 17) subjected to the pressure, on the one hand, of the liquid introduced into the machine and, on the other hand, of the two liquid phases separated by the latter, while providing a perfect seal between the different phases, without the need for providing elastic return members and without it being necessary to resort to special cooling means. <IMAGE>

Description

La présente invention a pour objet un séparateur centrifuge de liquides, plus particulièrement destiné à être utilisé dans l'industrie laitière, mais qui peut également être employé pour des huiles minérales ou végé­tales ou pour d'autres mélanges liquides, l'effet de la force centrifuge agissant sur lesdits liquides pour séparer leurs constituants présentant des densités différentes.The present invention relates to a centrifugal liquid separator, more particularly intended for use in the dairy industry, but which can also be used for mineral or vegetable oils or for other liquid mixtures, the effect of force centrifugal acting on said liquids to separate their constituents having different densities.

Un séparateur de ce type a été décrit dans la Demande de brevet italien 85.629/A/86 déposée au nom de la même Demanderesse le 5 Novembre 1986.A separator of this type has been described in Italian Patent Application 85,629 / A / 86 filed in the name of the same Applicant on November 5, 1986.

Dans cette Demande on prévoyait que les liquides de densités différentes séparés par centrifugation au moyen de l'appareillage sont dirigés vers le haut à l'intérieur de conduits annulaires concentriques ménagés dans la partie tournante de la machine, afin d'être ensuite envoyés dans des destinations différentes à travers des conduits pratiqués dans la tête fixe de ladite machine.In this Application, it was provided that liquids of different densities separated by centrifugation by means of the apparatus are directed upwards inside concentric annular conduits formed in the rotating part of the machine, in order then to be sent into different destinations through conduits made in the fixed head of said machine.

L'étanchéité totale entre la partie tournante et la tête fixe de la ma­chine était assurée à l'aide d'anneaux mobiles qui tournent avec la par­tie tournante de la machine et qui entrent en contact avec des anneaux élastiquement fixés à la partie supérieure fixe de celle-ci, en élimi­nant ainsi toute possibilité de contact entre les différentes phases liquides et l'atmosphère.The total seal between the rotating part and the fixed head of the machine was ensured by means of movable rings which rotate with the rotating part of the machine and which come into contact with rings elastically fixed to the fixed upper part of this, thereby eliminating any possibility of contact between the different liquid phases and the atmosphere.

Des conduits appropriés parcourus par de l'eau de refroidissement sous pression opèrent le refroidissement des anneaux fixes comme des anneaux tournants d'étanchéité.Appropriate conduits traversed by pressurized cooling water cool the fixed rings like rotary sealing rings.

L'étanchéité entre les anneaux mobiles et les anneaux fixes était obte­nue, dans la solution antérieure, par des ressorts appropriés qui agis­sent sur les anneaux qui ne tournent pas, en étant disposés sur la par­tie fixe de la machine, mais qui étant soumis à l'action des ressorts de compression qui les repoussent vers le bas, sont contraints de se maintenir au contact des anneaux mobiles prévus dans la partie tournante de la machine, en évitant de la sorte que les liquides séparés par la force centrifuge reviennent se mélanger entre eux.The seal between the movable rings and the fixed rings was obtained, in the previous solution, by suitable springs which act on the rings which do not rotate, being arranged on the fixed part of the machine, but which are subjected to the action of the compression springs which push them down, are forced to keep in contact with the movable rings provided in the rotating part of the machine, avoiding so that the liquids separated by the centrifugal force come back to mix with each other .

Cette solution engendre néanmoins certains inconvénients dus par dessus tout à la complexité des circuits hydrauliques intéressés par la sépara­ tion des liquides, ainsi qu'à la présence des ressorts de compression qui constituent des éléments relativement vulnérables, nécessitant un contrôle permanent et des remplacements fréquents, ne serait-ce que par suite des caractéristiques des liquides traités.This solution nevertheless generates certain drawbacks due above all to the complexity of the hydraulic circuits interested in separating it. tion of liquids, as well as the presence of compression springs which constitute relatively vulnerable elements, requiring permanent monitoring and frequent replacements, if only because of the characteristics of the liquids treated.

Ces inconcénents sont éliminés moyennant adoption du séparateur centri­fuge suivant l'invention tel que défini à la revendication 1.These inconsistencies are eliminated by adopting the centrifugal separator according to the invention as defined in claim 1.

Plus particulièrement la tête fixe de la machine est très simplifiée et l'étanchéité entre les différents conduits axiaux est obtenue à l'aide d'anneaux profilés, mobiles par rapport aux parties fixes de la machine et qui entrent en contact avec des anneaux, fixes par rapport aux par­ties tournantes de la machine, sous l'effet de la pression elle-même des liquides qui agit sur ces anneaux mobiles, ce qui permet d'obtenir par dessus tout une simplification considérable des circuits hydrauliques tout en permettant d'éliminer la présence de ressorts d'un type quelconque, en facilitant de la sorte le contrôle et la maintenance de la machine.More particularly the fixed head of the machine is very simplified and the seal between the different axial conduits is obtained using profiled rings, movable relative to the fixed parts of the machine and which come into contact with fixed rings. relative to the rotating parts of the machine, under the effect of the pressure itself of the liquids which acts on these movable rings, which makes it possible above all to obtain a considerable simplification of the hydraulic circuits while making it possible to eliminate the presence of springs of any type, thereby facilitating the control and maintenance of the machine.

Le positionnement particulier des anneaux d'étanchéité a pour conséquen­ce que ces anneaux sont directement léchés par les constituants des li­quides traités dans la machine, ce qui entraîne l'absorption de la cha­leur produite par le déplacement desdits anneaux et évite la nécessité de devoir assurer leur refroidissement à l'aide de la circulation d'eau prévue dans la demande de brevet précédemment citée.The particular positioning of the sealing rings means that these rings are directly licked by the constituents of the liquids treated in the machine, which results in the absorption of the heat produced by the movement of said rings and avoids the need to have to ensure their cooling using the water circulation provided for in the aforementioned patent application.

L'invention va maintenant être décrite de manière plus détaillée dans ce qui va suivre, avec l'aide du dessin annexé :The invention will now be described in more detail in the following, with the help of the attached drawing:

La figure unique de ce dessin est une coupe axiale partielle montrant la partie supérieure du séparateur centrifuge suivant l'invention.The single figure of this drawing is a partial axial section showing the upper part of the centrifugal separator according to the invention.

Sur ce dessin on notera que le liquide à traiter pénètre dans le sépa­rateur centrifuge à travers le conduit central 1 pour ressortir, à l'état séparé de ses deux phases à poids spécifiques différents, à tra­vers les conduits co-axiaux 2 et 3.In this drawing, it will be noted that the liquid to be treated enters the centrifugal separator through the central duct 1 to come out, in the state separated from its two phases with different specific weights, through the co-axial ducts 2 and 3.

Plus précisément la phase à plus faible poids spécifique qui remonte à travers le conduit co-axial 2 le plus intérieur est amenée au conduit co-axial 4 prévu dans la tête fixe de la machine pour déboucher dans des ouies de sortie, tandis que la phase à poids spécifique le plus élevé qui remonte par le conduit co-axial extérieur 3 s'échappe à travers la bouche de sortie 5 ménagée dans la partie fixe de la machine.More precisely, the phase with lower specific gravity which goes up through the innermost co-axial duct 2 is brought to the duct co-axial 4 provided in the fixed head of the machine to lead into outlet outlets, while the highest specific weight phase which rises through the outer co-axial duct 3 escapes through the outlet mouth 5 formed in the fixed part of the machine.

Les flèches qui apparaissent sur le dessin indiquent les parcours suivis par les différentes phases liquides.The arrows which appear on the drawing indicate the courses followed by the various liquid phases.

L'étanchéité entre le conduit central d'entrée 1 et le premier conduit co-axial de sortie 2 est assurée par l'anneau 6, qui est fixé à la par­tie centrale 7 du rotor et contre lequel vient s'appliquer l'anneau mo­bile 8, prévu co-axialement au conduit central 1, lequel anneau vient par sa lèvre supérieure 8′ au contact de l'anneau fixe 6, sous l'effet de poussée de la pression du liquide du conduit 1, pression qui s'exerce suivant le sens indiqué par les flèches 9.The seal between the central inlet duct 1 and the first co-axial outlet duct 2 is provided by the ring 6, which is fixed to the central part 7 of the rotor and against which the movable ring is applied. 8, provided co-axially to the central duct 1, which ring comes through its upper lip 8 ′ in contact with the fixed ring 6, under the effect of thrust of the pressure of the liquid in the duct 1, pressure which is exerted according to the direction indicated by the arrows 9.

Le circlip de butée 10 porté par le tube central qui forme le conduit 1 limite les déplacements de l'anneau mobile 8 dans le sens de l'ouverture.The stop circlip 10 carried by the central tube which forms the duct 1 limits the movements of the movable ring 8 in the direction of the opening.

D'une manière analogue l'étanchéité entre les liquides des conduits co-­axiaux 2 et 3 est assurée par l'anneau fixe 11 porté par le disque 12 qui ferme vers le haut le conduit 2 et par les deux anneaux 13 et 14 dont le mouvement est limité par les circlips de butée 15 et 16 fixés au tube qui définit le conduit 4, lesquels anneaux sont soumis à la pres­sion respectivement du liquide de la phase légère provenant du conduit 2 et du liquide de la phase lourde provenant du conduit 3.Similarly, the seal between the liquids of the co-axial conduits 2 and 3 is ensured by the fixed ring 11 carried by the disc 12 which closes the conduit 2 upwards and by the two rings 13 and 14, the movement is limited by the stop circlips 15 and 16 fixed to the tube which defines the duct 4, which rings are subjected to the pressure respectively of the light phase liquid coming from the duct 2 and the heavy phase liquid coming from the duct 3.

De la même manière encore l'étanchéité extérieure est assurée par l'an­neau mobile 17 prévu co-axialement à la bouche de sortie 5 et limité dans ses mouvements par le circlip de butée 18 porté par la paroi extérieure du tube qui forme la bouche 5 et par l'anneau fixe 19 soudé sur la tête 20 de la machine.In the same way again, the external sealing is ensured by the movable ring 17 provided co-axially with the outlet mouth 5 and limited in its movements by the stop circlip 18 carried by the outer wall of the tube which forms the mouth 5 and by the fixed ring 19 welded to the head 20 of the machine.

On comprend sans peine les avantages présentés par la forme de réalisa­tion ci-dessus décrite de la tête du séparateur centrifuge de liquides à moyens d'étanchéité tournants suivant l'invention, par rapport à la tête correspondante du séparateur qui fait l'objet de la demande précédente N° 85.629/A/86, et ce en ce qui concerne aussi bien la simplification structurelle notable de l'appareillage que l'absence de tout élément élastique (en l'occurence de ressort), du fait que l'étanchéité entre les anneaux mobiles et les anneaux fixes est assurée par la pression elle-même exercée par le liquide sur lesdits anneaux mobiles.It is easy to understand the advantages presented by the embodiment described above of the head of the centrifugal liquid separator with rotating sealing means according to the invention, compared to the corresponding head of the separator which is the subject of the previous request N ° 85.629 / A / 86, as far as simplification is concerned noteworthy structural aspect of the apparatus as the absence of any elastic element (in this case a spring), owing to the fact that the seal between the movable rings and the fixed rings is ensured by the pressure itself exerted by the liquid on said movable rings.

On soulignera par ailleurs l'avantage obtenu par suite du fait que le refroidissement des anneaux est opéré par les liquides traités eux-­mêmes, ce qui évite de prévoir un refroidissement à l'aide d'une circu­lation forcée d'eau.It will also be emphasized the advantage obtained as a result of the fact that the cooling of the rings is effected by the liquids treated themselves, which avoids providing for cooling by means of a forced circulation of water.

Claims (2)

1. Séparateur centrifuge à moyens d'étanchéité prévus tournants sur la tête supérieure fixe, du genre comprenant un corps tournant à l'inté­rieur duquel est introduit le liquide à traiter tandis que les phases séparées par différence de densités remontent à l'intérieur de conduits annulaires concentriques, caractérisés par le fait que les moyens d'étanchéité qui assurent une séparation parfaite des différentes phases liquides sont constitués par des anneaux mobiles (8, 13, 14, 17), convenablement profilés et susceptibles de se déplacer, respectivement l'anneau (8) sur le tube qui définit le conduit central (1), les anneaux (13-14) sur un tube co-axial central (4), l'anneau (17) sur le tube ex­térieur qui définit la bouche de sortie (5), en garantissant de la sorte l'étanchéité entre le conduit (1) pour l'entrée du liquide à traiter et les conduits (4, 5) pour la sortie des liquides séparés par la force centrifuge, sans recourir à des ressorts de rappel et moyennant une très grande simplification des conduits ménagés sur la partie fixe de la machine.1. Centrifugal separator with sealing means provided rotating on the fixed upper head, of the type comprising a rotating body inside which the liquid to be treated is introduced while the phases separated by difference in densities go up inside conduits concentric annulars, characterized in that the sealing means which ensure perfect separation of the different liquid phases consist of mobile rings (8, 13, 14, 17), suitably profiled and capable of moving, respectively the ring (8) on the tube which defines the central duct (1), the rings (13-14) on a central co-axial tube (4), the ring (17) on the external tube which defines the outlet mouth ( 5), thereby guaranteeing the seal between the duct (1) for the entry of the liquid to be treated and the ducts (4, 5) for the outlet of the liquids separated by centrifugal force, without resorting to springs of recall and with a very large simp lification of the conduits provided on the fixed part of the machine. 2. Séparateur centrifuge suivant la revendication 1, caractérisé par le fait que le refroidissement des anneaux d'étanchéité est amené par les liquides traiter dans la machine.2. Centrifugal separator according to claim 1, characterized in that the cooling of the sealing rings is brought by the liquids to be treated in the machine.
EP88112188A 1987-08-03 1988-07-28 Centrifugal separator with axial inlets and outlets Expired - Lifetime EP0302386B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88112188T ATE102496T1 (en) 1987-08-03 1988-07-28 SEPARATION CENTRIFUE WITH AXIAL INLETS AND OUTLETS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8558887 1987-08-03
IT85588/87A IT1218817B (en) 1987-08-03 1987-08-03 CENTRIFUGAL SEPARATOR REFINEMENTS WITH ROTARY SEALS ON THE FIXED UPPER HEAD

Publications (3)

Publication Number Publication Date
EP0302386A2 true EP0302386A2 (en) 1989-02-08
EP0302386A3 EP0302386A3 (en) 1991-04-17
EP0302386B1 EP0302386B1 (en) 1994-03-09

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EP88112188A Expired - Lifetime EP0302386B1 (en) 1987-08-03 1988-07-28 Centrifugal separator with axial inlets and outlets

Country Status (14)

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EP (1) EP0302386B1 (en)
JP (1) JPS6490050A (en)
KR (1) KR890003454A (en)
CN (1) CN1015294B (en)
AT (1) ATE102496T1 (en)
AU (1) AU606967B2 (en)
CA (1) CA1331977C (en)
CZ (1) CZ541088A3 (en)
DD (1) DD272420A5 (en)
DE (1) DE3888258D1 (en)
IT (1) IT1218817B (en)
PL (1) PL273983A1 (en)
RO (1) RO105379B1 (en)
SU (1) SU1667628A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996033011A1 (en) * 1995-04-18 1996-10-24 Nikolai Ivanovich Selivanov Method of conditioning hydrocarbon liquids and an apparatus for carrying out the method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20010743U1 (en) 2000-06-16 2000-10-12 Westfalia Separator Food Tec GmbH, 59302 Oelde Centrifuge with double inlet
MD892Z (en) * 2014-05-26 2015-10-31 Николае ЛАПОВЩЮК Device and process for separating a liquid homogeneous mixture
DE102015117375A1 (en) * 2015-10-13 2017-04-13 Gea Mechanical Equipment Gmbh separator
CN105675249B (en) * 2016-03-28 2018-06-19 北京航天长征飞行器研究所 A kind of sliding extension device for motion platform thermal protection stable water supply

Citations (7)

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Publication number Priority date Publication date Assignee Title
US2651455A (en) * 1950-07-07 1953-09-08 Laval Separator Co De Seal for centrifugal separators
US3126338A (en) * 1959-11-30 1964-03-24 Hermetically sealable mounting means
US3561773A (en) * 1968-01-25 1971-02-09 Hans Bauman Floating-ring shaft seal
DE2508503A1 (en) * 1975-02-27 1976-09-09 Westfalia Separator Ag SELF-CLEANING HERMETIC SPIN DRUM
DE2810306A1 (en) * 1977-03-23 1978-10-12 Sevastopolskyj Priborostroitel METHOD AND DEVICE FOR SEPARATION OF EMULSIONS
US4194745A (en) * 1979-05-02 1980-03-25 Mcdougal Thomas L Controlled clearance seal
EP0149895A1 (en) * 1983-12-01 1985-07-31 Flexibox Limited Backup seal

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4722534A (en) * 1985-12-18 1988-02-02 Borg-Warner Industrial Products, Inc. Face seal with automatic face convergence means

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2651455A (en) * 1950-07-07 1953-09-08 Laval Separator Co De Seal for centrifugal separators
US3126338A (en) * 1959-11-30 1964-03-24 Hermetically sealable mounting means
US3561773A (en) * 1968-01-25 1971-02-09 Hans Bauman Floating-ring shaft seal
DE2508503A1 (en) * 1975-02-27 1976-09-09 Westfalia Separator Ag SELF-CLEANING HERMETIC SPIN DRUM
DE2810306A1 (en) * 1977-03-23 1978-10-12 Sevastopolskyj Priborostroitel METHOD AND DEVICE FOR SEPARATION OF EMULSIONS
US4194745A (en) * 1979-05-02 1980-03-25 Mcdougal Thomas L Controlled clearance seal
EP0149895A1 (en) * 1983-12-01 1985-07-31 Flexibox Limited Backup seal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996033011A1 (en) * 1995-04-18 1996-10-24 Nikolai Ivanovich Selivanov Method of conditioning hydrocarbon liquids and an apparatus for carrying out the method

Also Published As

Publication number Publication date
EP0302386A3 (en) 1991-04-17
DE3888258D1 (en) 1994-04-14
AU1902788A (en) 1989-02-09
EP0302386B1 (en) 1994-03-09
IT1218817B (en) 1990-04-19
CN1015294B (en) 1992-01-15
RO105379B1 (en) 1994-11-14
SU1667628A3 (en) 1991-07-30
PL273983A1 (en) 1989-04-17
IT8785588A0 (en) 1987-08-03
CZ541088A3 (en) 1993-02-17
CA1331977C (en) 1994-09-13
KR890003454A (en) 1989-04-14
AU606967B2 (en) 1991-02-21
CN1031032A (en) 1989-02-15
ATE102496T1 (en) 1994-03-15
DD272420A5 (en) 1989-10-11
JPS6490050A (en) 1989-04-05

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