US2732073A - Roegg - Google Patents

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Publication number
US2732073A
US2732073A US2732073DA US2732073A US 2732073 A US2732073 A US 2732073A US 2732073D A US2732073D A US 2732073DA US 2732073 A US2732073 A US 2732073A
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Prior art keywords
cage
separator
cages
centrifuged
pusher
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B3/00—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering
    • B04B3/02—Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneous sifting or filtering discharging solid particles from the bowl by means coaxial with the bowl axis and moving to and fro, i.e. push-type centrifuges

Definitions

  • This invention relates to a push-type centrifugal machine having at least two separator cages arranged coaxially.
  • the solid material to be centrifuged is continuously conveyed through and out of the separator cages by an axially reciprocating pusher member.
  • the ejected material is intercepted by a housing which surrounds the end of the cage, and downwardly discharged through an open shaft.
  • the so-called multi-stage push-type centrifugal machines operate in accordance with the same principle, but in these the solid material centrifuged out of a first cage is projected into a second cagearranged coaxially therewith, and in which it is moved further towards the delivery side. Depending upon the object in view, this second cage is succeeded by one or more further cages.
  • the centrifuged material passes successively to a number of coaxially arranged forarninous separator cages partially surrounding one another, butv the centrifuged material is always moved axially forwards in the same direction.
  • the layers of material to be centrifuged in the various cages succeed one another in the axial direction.
  • Each of the cages is equivalent to a continuation of the preceding cage, and the period during which the solid material to be centrifuged stays in the centrifugal machine can be increased as desired.
  • Multi-stage push-type centrifugal machines afford the advantage that the material to be centrifuged stays in the machine for a longer period of time. Moreover, the solid material is advantageously loosened in passing from one drum to the other and is thus rendered more capable of filtration. Since the stage diameters increase from stage to stage, the degree of dryness of the solid material is at the same time improved.
  • Figures 1 and 2 each show in axial longitudinal section a constructional form having three separator cages arranged coaxially to one another, wherein the material to be centrifuged is moved axially alternately in different directions, and
  • Figures 3 and 4 are axial longitudinal sections through two different constructions having three separator cages, on which'the material to be centrifuged is moved unidirectionally.
  • each cage (except the last) of a multi-cage unit is encircled by the next, and transfer means are provided to guide the material from the 1, and to a distributor shell 11. Furthermore, that end of the cage-1 which is further from the disc 7 carries an annular portion 12 which is connected by stays 13 to the cage 1 and serves as a pusher member for the cage 2.
  • the cage 2 furthermore has an annular projection 14 serving as a pusher member for the cage 3.
  • the material to be centrifuged is introduced into the distributor shell 11 through a feed pipe 15, and is distributed by the said shell in a layer on to the cage 1.
  • the cages 1 and 3 are reciprocated in the axial direction by an actuating mechanism of known type (not shown), which engages with the left hand end of the rod 8.
  • the annular portion 12 also "moves in the same direction and displaces to the left the layer of material to be centrifuged which is situated on the cage 2, which is fixed in the axial direction.
  • the annular projection 14 is connected to the disc 5 only by individual supporting members 16 extending through the disc 7, and is connected to the cage 2 by stays 17.
  • the layer of material to be centrifuged in the outermost cage is further moved to the right relatively to the said cage, which is moved to the left simultaneously with the cage 1, a corresponding quantity-of material being expelled at the end of the cage and thereafter being downwardly discharged through an opening'18 in the housing.
  • the material to be centrifuged is fed to the cage 1 through the distributor shell 11 on, the left-hand side, conveyed to the right by the push-bottom and fed by the annular portion 12 of the cage 2 on the right-hand side, that is to say, on the opposite side to the feed point of the cage 1, and axially moved forward on the cage 2 in the opposite direction to the feed point of the cage 1.
  • the constructional form illustrated comprises three coaxially arranged separator cages 1, 2, and 3, having between them annular gaps 19 and 20, to which cages the material to be centrifuged is successively fed, and in which in addition the pusher means 10, 12 and 14 are provided, by which the material to be centrifuged is alternately axially moved forward on the successive cages in one direction and in the other.
  • the cages to which the material is successively fed are furthermore alternately arranged so as to be shiftable and non-shiftable in the axial direction.
  • the shiftable cages 1 and 3 co-operate with the pusher members 10 and 14 which cannot shift in the axial direction, while the non-shiftable cage 2 co-operates with the pusher member 12 which is shiftable in the axial direction and connected to the shiftable cages, for the forward movement of the material to be centrifuged.
  • two spray nozzles 21 and 22 are shown in the drawings, by which washing liquid can be fed to the material lying on the cages 1 and 3.
  • the liquid centrifuged from the individual cages is discharged through ducts 23 and 24 into chambers 25 and 26 respectively in the housing.
  • the centrifuged liquid flows directly from the outermost cage 3 into a chamber 27 in the housing.
  • the same purpose can be achieved by arranging the cages 1 and 3 so that they cannot shift axially, and the cage 2 so that it shifts in the axial direction.
  • FIG. 2 differs from that according to Figure 1 in that all the cages are arranged to be shiftable in the axial direction and comprise pusher members which are fixed in the axial direction.
  • a rotor Disposed in a housing 28 is a rotor having three separator cages 29, 30 and 31.
  • the said cages are rigidly connected through a disc 32 to the axially displaceable rod 8.
  • a push-bottom 33 is provided as the pusher member, for the second cage a pusher ring 34, and for the third cage a ring 35.
  • a distributor shell 36 is again connected to the push-bottom 33, into which shell the material to be centrifuged is introduced through a feed pipe 37. All the pusher members are rigidly connected to the hollow driving shaft 6, which is non-displaceable in the axial direction.
  • the material to be centrifuged passes through a gap 38 between the free end of the cage 29 and the pusher ring 34 on to the cage 30.
  • the layer of material to be centrifuged on the cage 30 in pushed to the left relatively to this cage.
  • the extreme lefthand part of the material is thereby projected through gaps 39 on to the outermost cage 31.
  • the outermost layer of material is pushed to the right relatively to the cage, a corresponding part of the material being discharged.
  • Ducts 40, 41 again serve to discharge the centrifuged liquid into corresponding chambers in the housing.
  • a spray nozzle 42 serves to feed washing liquid to the outermost cage.
  • the described arrangement has the advantage that the material to be centrifuged which is ejected from one cage on to the next cage always falls directly on to a space freed by the return movement of the pusher member of the next following cage. Temporary banking up of the material to be centrifuged is thus avoided.
  • all the cages may be fixed in the axial direction, in which case they will co-operate with pusher members which are shiftable in the axial direction.
  • the material ejected to the right from the cage 44 is again conducted through a flaring shell 54 to the lefthand side of the cage and the material ejected to the right from the drum 45 is conducted through a flaring shell 55 to the left-hand side of the cage 46.
  • the flaring shells 54 and 55 are rigidly connected to the separator cages 44, 45 respectively, and extend within the radial space between the consecutive separator cages toward their fixed end.
  • Such an arrangement is advantageous in that all the cages are accessible from the delivery side. Means may be provided which, if necessary, feed washing liquid to all the cages. To this end, spray nozzles 56, 57, 58 are provided in the arrangement according to Figure 3. The liquid centrifuged from the cages 44 and 45 is discharged into associated chambers in the housing by corresponding ducts 60 and 59 respectively.
  • Figure 4 shows a fundamentally similar arrangement, which differs from that according to Figure 3 only in that it comprises three cages 61, 62, 63 which are shiftable in the axial direction and connected to the thrust rod 8.
  • a push-bottom 64 and two pusher rings 65 and 66 are employed as pusher members.
  • these pusher members are rigidly connected to the hollow shaft 6 through a disc 67 and are therefore fixed in the axial direction.
  • the material to be centrifuged is conducted through a feed pipe 68 to a distributor shell 69 rigidly connected to the push-bottom 64.
  • a push-type centrifugal machine in combination a rotary driving shaft; a series of at least two radially spaced foraminous separator cages overhung on said driving shaft and arranged coaxially thereto, and connected to rotate with said driving shaft, the outer one of two consecutive separator cages surrounding the inner one in such a manner as to leave an annular gap between the two; means for supplying material to be centrifuged to the innermost of the separator cages; pusher means co-operating with each of the separator cages, each of said separator cages and said pusher means cooperating therewith being axially shiftable in relation to each other so that, by a relative reciprocating movement of the two, material to be centrifuged situated in a layer on the separator cage is conveyed in axial direction and successively discharged therefrom; means for leading the materal discharged from each of the separator cages which precede the outermost separator cage to the next following separator cage by which it is surrounded; means for collecting the centrifuged material which
  • a push-type centrifugal machine in combination a rotary driving shaft; a first foraminous separator cage arranged overhung on said driving shaft so as to rotate therewith and in axially shiftable relation thereto; a second foraminous separator cage rigidly connected to said driving shaft, whereby said second separator cage surrounds said first separator cage with an annular gap be tween the two; a third foraminous separator cage rigidly connected with said first separator cage and surrounding said second separator cage with an annular gap between said third and said second separator cage; a first pusher member encircled by said first separator cage and rigidly connected with said driving shaft; a flaring distributor shell rigidly connected to said first pusher member; a feed pipe opening into said distributor shell, whereby material to be centrifuged is fed through said feed pipe and said distributor shell to said first separator cage; a flow passage leading from the free end of the first separator cage to the free end of the second separator cage; a second pusher member rigidly connected to the free end
  • a push-type centrifugal machine in combination a rotary driving shaft; a disc arranged overhung on said driving shaft so as to rotate therewith and in axially shiftable relation thereto; three radially spaced foraminous separator cages arranged coaxially and rigidly connected to said disc; a first pusher member encircled by the innermost of said separator cages and rigidly connected with said driving shaft; a flaring distributor shell rigidly connected to said first pusher member; a feed pipe opening into said distributor shell, whereby material to be centrifuged is fed through said feed pipe and said distributor shell to said innermost separator cage; a second pusher member encircled by the intermediate one of said separator cages confining axially a flow path for leading material which is discharged from the free end of the innermost separator cage to the intermediate separator cage, said intermediate separator cage being provided with gaps in the region near the disc to which it is connected, thus allowing material to discharge through said gaps from said intermediate separator cage to the outermost of said separator
  • a push-type centrifugal machine in combination a rotary driving shaft; a disc rigidly connected to the free end of said driving shaft; at least two radially spaced separator cages arranged coaxially and rigidly connected to said disc; a flaring distributor shell encircled by the innermost of said separator cages and rigidly connected to said driving shaft; a feed pipe opening into said distributor shell, whereby material to be centrifuged is fed through said feed pipe and said distributor shell to said innermost separator cage; pusher members, one co-operating with each of said separator cages, arranged to rotate with said driving shaft and axially shiftable in relation thereto, whereby with an axial reciprocating movement of said pusher members material to be centrifuged is conveyed on the said separator cages toward the free end thereof; flaring shells one rigidly connected to each of the separator cages except the outermost and extending within the radial space between consecutive separator cages toward the fixed end of the separator cages for leading material which is discharged from
  • a push-type centrifugal machine in combination a rotary driving shaft; a disc connected to rotate with said driving shaft and axially shiitable in relation thereto; at least two radially spaced separator cages arranged coaxially and rigidly connected to said disc; pusher members, onc co-operating with each of the said separator cages, rigidly connected with said driving shaft; a flaring distributor shell arranged within the innermost of said separator cages and rigidly connected to the pusher member which co-operates with the innermost separator cage; flaring shells, one rigidly connected to each of the pusher members except the innermost and extending within the radial space between consecutive separator cages toward the supported end of the separator cages, for leading material which is discharged from the free end of the preceding separator cage to the region near the supported end of the separator cage next outward, a feed pipe opening into said distributor vshell which is arranged within said innermost separator cage, whereby material to be centrifuged is fed through said feed pipe

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  • Centrifugal Separators (AREA)
US2732073D 1953-11-23 Roegg Expired - Lifetime US2732073A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH767867X 1953-11-23

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US2732073A true US2732073A (en) 1956-01-24

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US2732073D Expired - Lifetime US2732073A (en) 1953-11-23 Roegg

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US (1) US2732073A (de)
BE (1) BE533470A (de)
CH (1) CH317586A (de)
DE (1) DE963855C (de)
FR (1) FR1116184A (de)
GB (1) GB767867A (de)
NL (2) NL192146A (de)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899065A (en) * 1953-05-25 1959-08-11 irving
US3010582A (en) * 1957-04-09 1961-11-28 Machf Reineveld N V Centrifugal screening machines
US3205095A (en) * 1962-10-02 1965-09-07 Braunschweigische Maschb Ansta Sugar recovery centrifuge
US3368684A (en) * 1966-08-23 1968-02-13 Escher Wyss Ltd Continuously operating centrifuging device
US3409137A (en) * 1960-08-31 1968-11-05 Beteiligungs & Patentverw Gmbh Pusher type centrifuge with a washing device for the centrifuged material
US3416662A (en) * 1965-11-29 1968-12-17 Struthers Scientific Int Corp Centrifugal ice washing method
US3667613A (en) * 1970-10-02 1972-06-06 Raymond H Angold Apparatus for filtering cooking liquid
US5021158A (en) * 1984-03-21 1991-06-04 Krauss-Maffei Ag Process and apparatus for the separation of mixtures of substances
US5433849A (en) * 1993-09-15 1995-07-18 Lyco Manufacturing, Inc. Double drum waste water screen
CN108325758A (zh) * 2018-04-10 2018-07-27 巨能机械(中国)有限公司 一种沉降过滤式活塞推料离心机
CN113227693A (zh) * 2019-11-18 2021-08-06 株式会社Lg化学 加压离心脱水机

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE977591C (de) * 1953-12-25 1967-06-08 Krauss Maffei Ag Schleudertrommel von Schubzentrifugen
DE1044721B (de) * 1956-04-04 1958-11-20 Krauss Maffei Ag Schubzentrifuge mit einer stufenfoermigen Siebtrommel
NL101658C (de) * 1957-07-06
US6193246B1 (en) * 2000-05-05 2001-02-27 V. John Ondrasik Shopping cart with front gate
KR102504659B1 (ko) * 2019-11-18 2023-02-27 주식회사 엘지화학 가압 원심 탈수기

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE221961C (de) *
US1839941A (en) * 1927-03-29 1932-01-05 Zelezniak Wladyslaw Centrifugal separator
GB638799A (en) * 1947-07-11 1950-06-14 Escher Wyss Maschf Ag Push-type centrifuge

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE221961C (de) *
US1839941A (en) * 1927-03-29 1932-01-05 Zelezniak Wladyslaw Centrifugal separator
GB638799A (en) * 1947-07-11 1950-06-14 Escher Wyss Maschf Ag Push-type centrifuge

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2899065A (en) * 1953-05-25 1959-08-11 irving
US3092580A (en) * 1953-05-25 1963-06-04 Baker Perkins Inc Centrifugal machines
US3010582A (en) * 1957-04-09 1961-11-28 Machf Reineveld N V Centrifugal screening machines
US3409137A (en) * 1960-08-31 1968-11-05 Beteiligungs & Patentverw Gmbh Pusher type centrifuge with a washing device for the centrifuged material
US3205095A (en) * 1962-10-02 1965-09-07 Braunschweigische Maschb Ansta Sugar recovery centrifuge
US3416662A (en) * 1965-11-29 1968-12-17 Struthers Scientific Int Corp Centrifugal ice washing method
US3368684A (en) * 1966-08-23 1968-02-13 Escher Wyss Ltd Continuously operating centrifuging device
US3667613A (en) * 1970-10-02 1972-06-06 Raymond H Angold Apparatus for filtering cooking liquid
US5021158A (en) * 1984-03-21 1991-06-04 Krauss-Maffei Ag Process and apparatus for the separation of mixtures of substances
US5433849A (en) * 1993-09-15 1995-07-18 Lyco Manufacturing, Inc. Double drum waste water screen
US5518614A (en) * 1993-09-15 1996-05-21 Lyco Manufacturing, Inc. Infeed for a drum waste water screen
US5587073A (en) * 1993-09-15 1996-12-24 Zittel; David R. End supported double drum waste water screen
CN108325758A (zh) * 2018-04-10 2018-07-27 巨能机械(中国)有限公司 一种沉降过滤式活塞推料离心机
CN108325758B (zh) * 2018-04-10 2024-05-03 巨能机械(中国)有限公司 一种沉降过滤式活塞推料离心机
CN113227693A (zh) * 2019-11-18 2021-08-06 株式会社Lg化学 加压离心脱水机
US20210316235A1 (en) * 2019-11-18 2021-10-14 Lg Chem, Ltd. Pressurizing centrifugal dehydrator
CN113227693B (zh) * 2019-11-18 2023-03-17 株式会社Lg化学 加压离心脱水机
US11833458B2 (en) * 2019-11-18 2023-12-05 Lg Chem, Ltd. Pressurizing centrifugal dehydrator

Also Published As

Publication number Publication date
NL192146A (de)
CH317586A (de) 1956-11-30
NL88697C (de)
DE963855C (de) 1957-05-16
GB767867A (en) 1957-02-06
BE533470A (de)
FR1116184A (fr) 1956-05-04

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