AU606967B2 - An improved centrifugal separator with rotating seals on the fixed upper head - Google Patents
An improved centrifugal separator with rotating seals on the fixed upper head Download PDFInfo
- Publication number
- AU606967B2 AU606967B2 AU19027/88A AU1902788A AU606967B2 AU 606967 B2 AU606967 B2 AU 606967B2 AU 19027/88 A AU19027/88 A AU 19027/88A AU 1902788 A AU1902788 A AU 1902788A AU 606967 B2 AU606967 B2 AU 606967B2
- Authority
- AU
- Australia
- Prior art keywords
- conduit
- fixed
- liquid
- external
- rings
- 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.)
- Ceased
Links
- 239000007788 liquid Substances 0.000 claims abstract description 34
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 5
- 230000001174 ascending effect Effects 0.000 claims description 4
- 239000012071 phase Substances 0.000 abstract description 9
- 238000001816 cooling Methods 0.000 abstract description 4
- 239000007791 liquid phase Substances 0.000 abstract description 4
- 230000000284 resting effect Effects 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 241000447437 Gerreidae Species 0.000 description 1
- 101100460719 Mus musculus Noto gene Proteins 0.000 description 1
- 241001482237 Pica Species 0.000 description 1
- 208000035480 Ring chromosome 8 syndrome Diseases 0.000 description 1
- 101100187345 Xenopus laevis noto gene Proteins 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
Landscapes
- 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
I
Australia PATENTS ACT COMPLETE SPEM1I C .7
(ORIGINAL)
FOR OFFICE USE Short Title: Int. Cl: 00 0 0 o Application Number: Lodged: o o0 0 0 0 pomplete Specification-Lodged: Accepted: Lapsed: Published: Jr T Sr I.
Pull 0 00 0 o 0 0 0 0 00 °o Related Art: 0 0a 0000 °o0" ,ame of Applicant: Address of Applicant: TO BE COMPLETED BY APPLICANT FRAU S.p.A.
Via Blanche, CARRE' (VICENZE). ITALY.
Actual Inventor: Address for Service: Remo ZUCCATO CALLINANS Patent Attorneys, of 48-50 Bridge Road, Richmond, State of Victoria, Australia.
Complete Specification for the invention entitled: An improved centrifugal separator with rotating seals on the fixed upper head.
The following statement is a full description of this invention, including the best method of performing it known to me:-* Noto: The description is to be typed in double spacing, pica type face, in an area not exceeding 250 mm in depth and 100 mm In width, on tough white paper of good quality and it is to be inserted inside this form.
d -2- The present invention relates to centrifugal separators for liquids and is particularly intended for use in the milk industry but may also be used for mineral oils, vegetable oils or other liquid mixtures in which, due to the centrifugal force, the liquids are separated in their different components which have different density.
A centrifugal separator of this type is described in US Patent No.
4,810,240, subject matter of which is incorporated herein by reference.
The earlier patent provides that the liquids having different density are separated under the action of the centrifugal force of the apparatus by being 0 10 caused to ascend within annular concentric conduits formed in the rotating part 0 0 00 of the apparatus and then being distributed through conduits formed in the fixed I oo head of the apparatus for the various destinations.
o o The hermetic seals between the rotating part of the apparatus and the 0 0 fixed head are created in the earlier patent by means of movable rings which rotate together with the rotating part of the apparatus, the rings coming in contact 00 0 with other rings resiliently fixed to the fixed upper part of the apparatus, thereby o oopOo eliminating contact of the various liquid phases with the atmosphere. Suitable 0 0 conduits are provided for letting cooling water under pressure flow through for 0 0 0 the purpose of cooling both the fixed rings as well as the rotating rings which provide the seal.
o o The seal between the movable rings and the fixed rings is created in 0 00 the apparatus according to the earlier patent by suitable springs which act on -J rings which do not rotate because they are disposed on the fixed part of the apparatus but which are subjected to the action of the compression springs which push the rings downwardly. Therefore, the rings which do not rotate are compelled to remain in contact with the movable rings located in the rotating part ,of the apparatus, thus avoiding that the liquids separated due to the centrifugal -3- I iforce mix again.
This solution gives rise, however, to some drawbacks due to the complexity of the hydraulic circuits involved in the separation of the liquids, the presence of the compression springs which involve very vulnerable structures, which require continuous control and require frequent replacement; and the properties of the liquids being used.
An object of the present invention is to improve the centrifugal separator of the earlier patent and to reduce the drawbacks mentioned Sc hereinabove.
The present invention therefore provides a centrifugal separator for the separation of a liquid into several phases of different density, said separator including a fixed upper head, a rotating body having a central part, an inlet conduit for said liquid into said rotating body, concentric conduit means for the different phases of different density, the liquid of lower density ascending through the more internal conduit, the liquid of greater density ascending
*CC
through the external conduit, said internal conduit communicating with a coaxial outlet conduit disposed in said fixed upper head, said external conduit oooC0 C communicating with an outlet disposed in said fixed head, a ring fixed to said central part of the rotating body, movable rings suitably shaped and capable of displacement, one of said movable rings being capable of displacing with respect to the inlet conduit, said one of said movable rings being located coaxially with Srespect to said inlet conduit and under the thrust of the pressure of the liquid in said inlet conduit coming in contact with said fixed ring and providing a seal between said inlet conduit and said internal conduit, a fixed disk located in the upper part of said internal conduit, said other of said movable rings being capable of displacement with respect to the outlet coaxial conduit and being subject to the pressure of the liquid of lower density from said internal conduit and to the .1 ht -4pressure of liquid of greater density from said external conduit and providing a seal between the liquids in the internal conduit and external conduit, a further ring of said movable rings being external and being coaxial with said outlet conduit, said further ring being capable of displacement along the external conduits and providing an external seal, said movable rings ensuring hermetic seals and ensuring a perfect separation between the various phases without requiring return springs.
The invention will be explained in more detail hereinbelow by reference to the attached drawing which illustrates a view of the upper part of the 1) centrifugal separator partially axially in cross-section with the rotating seals according to the present invention.
'As shown in the drawing the liquid being handled is introduced into the centrifugal separator through the central conduit 1 and exits after having been separated in the two phases of different specific weight through the coaxial "15, conduits 2 and 3. In particular the phase of lower specific weight which ascends through the coaxial more internal conduit 2 is brought to the coaxial conduit 4 which is disposed in the fixed head of the apparatus at the outlets while the phase with greater specific weight which ascends from the external coaxial conduit 3 exits through the exit outlet 5 which is disposed in the fixed part of the apparatus. The arrows shown in the figure designate the course followed by the different liquid phases.
L, f: The seal between the central inlet conduit 1 an:: coaxial exit conduit 2 is provided by the ring 6 which is fixed t~ the central part 7 of the rotor. The movable ring8 comes in contact with central part 7 of the rotor. The movable ring 8 is located coax.:ally with respect to the central tube 1 and its upper lip 8'contacts the fixed ring 6, under the thrust action of the pressure of' the liquid present in conduit 1, which pressure is exerted in the direction of the arrows 9.
The stop element 10 is fixed to the central conduit 1 to 0 oo 10 limit the axial motion of the movable ring 8.
The seal between the liquids of the coaxial conduits 2 and 0 0 0 3 is provided by the fixed ring 11 which is fixed to the disk 12, 0 a the latter closing in its upper part the conduit 2 by the two rings 13 and 14. The motion of the rings 13 and 14 is limited by the stop 0 0 0 15 elements 15 and 16 which are fixed to conduit 4. The two rings, 13 0 o o 0 0 and 14 are subjected respectively to the pressure of the liquid of S" the light phase which comes from conduit 2 and to the pressure of the liquid of the heavy phase which comes from conduit 3.
*The external seal is provided by the movable ring 17 which 20 is coaxial with the external conduit 5 and which is limited in its axial motion by the stop element 18, the latter being fixed to the external wall of conduit 5. The external seal is also provided by the fixed ring 19 which is fixed to the head 20 of the apparatus.
The advantages resulting from the present invention and 25 specifically the head of the centrifugal separator for the liquids with rotating seals with respect to the head of the earlier centrifugal PUS rCeR0 1o. 10, 2 L-0>.
separator described in)eB ta!Jn Application Ho. N are
KI
clear not only with respect to the substantial simplif:.ct it:. construction of the apparatus but also above all because of the elimiti':. n of elastic elements and specifically springs because the seal betweer, the movable rings and the fixed rings is provided by the came pressIur exerted by the liquid on the same movable rings.
It should also be stressed that there is a substantial advantra resulting by the cooling performed by the same liquids cn the rings, without the necessity of providing for the cooling by means of circulation 0 t of cold water under pressure.
-10 Obviously, the apparatus has been described and illustrated 6 I.
o in the drawing attached hereto according to one specific embodiment which, however, has been described only by way of a non-limiting example.
The particular constructional details may be varied in form and different aspects, while the essential characteristics of the invention remain unchanged.
I
Claims (7)
1. A centrifugal separator for the separation of a liquid into several phases of different density, said separator including a fixed upper head, a rotating body having a central part, an inlet conduit for said liquid into said rotating body, concentric conduit means for the different phases of different density, the liquid, of lower density ascending through the more internal conduit, the liquid of greater density ascending through the external conduit, said internal conduit communicating with a coaxial outlet conduit disposed in said fixed upper head, S said external conduit communicating with an outlet disposed in said fixed head, o a ring fixed to said central part of the rotating body, movable rings suitably shaped and capable of displacement, one of said movable rings being capable of So 0o displacing with respect to the inlet conduit, said one of said movable rings being located coaxially with respect to said inlet conduit and under the thrust of the pressure of the liquid in said inlet conduit coming in contact with said fixed ring o o and providing a seal between said inlet conduit and said internal conduit, a fixed °o 0 disk located in the upper part of said internal conduit, said other of said movable rings being capable of displacement with respect to the outlet coaxial conduit and being subject to the pressure of the liquid of lower density from said internal conduit and to the pressure of liquid of greater density from said external conduit and providing a seal between the liquids in the internal conduit and external, conduit, a further ring of said movable rings being external and being coaxial with. said outlet conduit, said further ring being capable of displacement along the external conduits and providing an external seal, said movable rings ensuring hermetic seals and ensuring a perfect separation between the various phases without requiring return springs.
2. The centrifugal separator according to claim 1, wherein the rings are lapped by the liquids whereby they are cooled. :_1 I .I -8-
3. The separator according to claim 1 or 2, wherein a stop element fixed, to said inlet conduit limits the motion of said movable ring.
4. The separator according to claim 1, wherein stop elements fixed to said coaxial outlet conduit limit the motion of said rings.
The separator according to claim 1, wherein said outlet conduit has an external wall and a stop element fixed to the external wall of said outlet conduit limits the motion of said ring.
6. The separator according to claim 5, wherein a fixed ring fixed to said upper head ensures external seal.
7. A centrifugal separator substantially as hereinbefore described with :reference to the accompanying drawings. D A T E D this 16th day of November, 1990. ?RAU S.p.A. SB 1 3 y their Patent Attorneys: o0 o CALLINAN LAWRIE 0 0 0 0 00 S o 0 o0 0 0/ 0 0 0 0 0 000 0 0 0 0 S 0 0 0
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT85588/87 | 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 (2)
| Publication Number | Publication Date |
|---|---|
| AU1902788A AU1902788A (en) | 1989-02-09 |
| AU606967B2 true AU606967B2 (en) | 1991-02-21 |
Family
ID=11328559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU19027/88A Ceased AU606967B2 (en) | 1987-08-03 | 1988-07-14 | An improved centrifugal separator with rotating seals on the fixed upper head |
Country Status (14)
| Country | Link |
|---|---|
| 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) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001503369A (en) * | 1995-04-18 | 2001-03-13 | アドバンスト・モレキュラー・テクノロジーズ・リミテッド・ライアビリティ・カンパニー | Method for conditioning a hydrocarbon fluid and apparatus for implementing the method |
| 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 (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4194745A (en) * | 1979-05-02 | 1980-03-25 | Mcdougal Thomas L | Controlled clearance seal |
| US4552368A (en) * | 1983-12-01 | 1985-11-12 | Flexibox Limited | Backup seal with bush in form of radially floating washer |
| US4722534A (en) * | 1985-12-18 | 1988-02-02 | Borg-Warner Industrial Products, Inc. | Face seal with automatic face convergence means |
Family Cites Families (4)
| 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 | |
| CH470612A (en) * | 1968-01-25 | 1969-03-31 | Bbc Brown Boveri & Cie | Floating ring seal |
| SU772567A2 (en) * | 1977-03-23 | 1980-10-23 | Севастопольский Приборостроительный Институт | Apparatus for cleaning water from oil products |
-
1987
- 1987-08-03 IT IT85588/87A patent/IT1218817B/en active
-
1988
- 1988-07-14 AU AU19027/88A patent/AU606967B2/en not_active Ceased
- 1988-07-20 CA CA000572559A patent/CA1331977C/en not_active Expired - Fee Related
- 1988-07-26 KR KR1019880009407A patent/KR890003454A/en not_active Withdrawn
- 1988-07-28 DE DE88112188T patent/DE3888258D1/en not_active Expired - Lifetime
- 1988-07-28 EP EP88112188A patent/EP0302386B1/en not_active Expired - Lifetime
- 1988-07-28 AT AT88112188T patent/ATE102496T1/en active
- 1988-07-30 PL PL27398388A patent/PL273983A1/en unknown
- 1988-08-01 DD DD88318538A patent/DD272420A5/en not_active IP Right Cessation
- 1988-08-01 RO RO134751A patent/RO105379B1/en unknown
- 1988-08-02 SU SU884356307A patent/SU1667628A3/en active
- 1988-08-02 CZ CS885410A patent/CZ541088A3/en unknown
- 1988-08-03 CN CN88104868A patent/CN1015294B/en not_active Expired
- 1988-08-03 JP JP63194314A patent/JPS6490050A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4194745A (en) * | 1979-05-02 | 1980-03-25 | Mcdougal Thomas L | Controlled clearance seal |
| US4552368A (en) * | 1983-12-01 | 1985-11-12 | Flexibox Limited | Backup seal with bush in form of radially floating washer |
| US4722534A (en) * | 1985-12-18 | 1988-02-02 | Borg-Warner Industrial Products, Inc. | Face seal with automatic face convergence means |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0302386A2 (en) | 1989-02-08 |
| CZ541088A3 (en) | 1993-02-17 |
| CN1015294B (en) | 1992-01-15 |
| CN1031032A (en) | 1989-02-15 |
| CA1331977C (en) | 1994-09-13 |
| EP0302386B1 (en) | 1994-03-09 |
| ATE102496T1 (en) | 1994-03-15 |
| EP0302386A3 (en) | 1991-04-17 |
| RO105379B1 (en) | 1994-11-14 |
| IT8785588A0 (en) | 1987-08-03 |
| PL273983A1 (en) | 1989-04-17 |
| IT1218817B (en) | 1990-04-19 |
| SU1667628A3 (en) | 1991-07-30 |
| DD272420A5 (en) | 1989-10-11 |
| KR890003454A (en) | 1989-04-14 |
| AU1902788A (en) | 1989-02-09 |
| DE3888258D1 (en) | 1994-04-14 |
| JPS6490050A (en) | 1989-04-05 |
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