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US2828021A - Push-type centrifuge - Google Patents

Push-type centrifuge Download PDF

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Publication number
US2828021A
US2828021A US661857A US66185757A US2828021A US 2828021 A US2828021 A US 2828021A US 661857 A US661857 A US 661857A US 66185757 A US66185757 A US 66185757A US 2828021 A US2828021 A US 2828021A
Authority
US
United States
Prior art keywords
drum
feed
sieve
sieve drum
centrifuge
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
US661857A
Other languages
English (en)
Inventor
Ruegg Ernst
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.)
Sulzer Escher Wyss AG
Original Assignee
Escher Wyss AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Escher Wyss AG filed Critical Escher Wyss AG
Application granted granted Critical
Publication of US2828021A publication Critical patent/US2828021A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B11/00—Feeding, charging, or discharging bowls
    • B04B11/02—Continuous feeding or discharging; Control arrangements therefor
    • 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

  • the funnel-shaped vfeed drum is usually connected to a push-button bymeans of stays, which bottom serves to convey the charge withinthe sieve drum which, together with this bottom, bounds an entrance chamberfor the material to be centrifuged.
  • Charging of the material into the feed funnel usually takes place from the delivery side of the centrifuge .and ,the feed funnel diverges away lfrom the ⁇ delivery side of the centrifuge.
  • the outer ⁇ end of the feed funnel or a hring mounted on the outer side ofthe feed funnel limits vthe thickness of the layer of material disposed-in 4the sieve drum.
  • Constructions are ⁇ also known in ⁇ which chargingof the material to ⁇ be centrifuged takes place ,from ⁇ the side ⁇ opposite to the delivery end of the centrifuge. -In this case the feed ⁇ funnel diverges in ithefdelivery direction and is provided with a sieve cover which permits ⁇ predehydration of the charge.
  • the known construction has the further disadvantage that the .arrangement of the washing pipes or sprinklers which are always provided for the charge material is difficult inthat these cannot be inserted in the centrifugal drum to the desired depth.
  • the invention ⁇ airns to overcome these disadvantages.
  • a push-type centrifuge in which a sieve drum and a feed drum, .diverging inthe delivery direction of the centrifuge, and being built into the sieve drum and rotating therewith for feeding material with which it is charged to the sieve drum, are axially movable relatively to -oneanother and ,in which a pusher ring for conveying the charge material within the sieve drum axially thereof, is connected directly to the outer end of the ⁇ feed ⁇ drum and sieve drum. Further, no solid confining walls areprovided which are formed by ribs, blades vor the like transversely of the charge material.
  • the ,entrant charge material ows along the surface of the feed drum and is accelerated only by friction at the in- .ner face of the drum. Thus, all impacts on the charge are avoided. On the inside the charge material moving over the feed drum and the sieve drum has a free surface and thus any rubbing of a fixed part on the charge material pressed within the sieve drum is avoided.
  • Figure l is an axial section of the centrifuge and Figure 2 is a section along the line II--II in Figure 1.
  • a sieve drum 2 is connected with one end ⁇ to the4 outer circumference of a boss 3 which is mounted to overhang on a hollow shaft 4.
  • 5 indicates
  • a conical disc 8 is mounted ⁇ on the freerprojecting end of a central shaft 6 arranged within the hollow shaft i coaxially therewith, the shaft A 6 being forced to rotate together with the shaft 4 by meansof a key 7 but vbeing displaceable axially thereof.
  • the conical Vdisc is disposed within the sieve drum 2. At its outer marginal portion there ⁇ is detachably connected a feed drum 9 which diverges in the delivery direction-of the centrifuge, i. e. toward the free open end .of the sievedrum 2, which is remotefrom the shaft.
  • ⁇ feed'drum has a frusto-.conical shape.
  • ⁇ A pusher ring lll having its outer circumference in close proximity tothe ⁇ inner surface :of the sieve drum, is connected directly to ,theouter endof thefeed .drum 9, the, pusher ring serving Y open end thereof. Its discharge opening is directed toward the inner surface of the feed drum 9; It lies near 3 the inner end thereof and is arranged approximately tangentially of the drum 9 as shown in Figure 2.
  • a delivery pipe 14 is provided to supply washing liquor into the sieve drum 2.
  • No solid walls are provided inside of the feed drum 9 andthe sieve drum 2 with which the layer of material moving within these drums could come into contact.
  • a free space of suflicient width is left adjacent the inner surfaces of the feed drum 9 and the sieve drum 2 so as to allow the material to move within said drums while having a free surface toward the inside.
  • the disc boss S which supports and drives the rotary feed device comprising feed drum 9 and pusher ring it) is connected with said feed device in a region outside the surface of the feed drum and pusher ring over which the material to be centrifuged travels,.so'that no stays or blades cross the layer of material which could'have an impact eifect on the material which is accelerated during rotation of the feed drum.
  • the solid particles are therefore considerably protected during treatment in this centrifuge.
  • the heaping up of the material in the inlet chamber is no longer limited as in the case of hitherto known constructions s'o that the centrifuge can always be charged with an amount Y determined by the efticient centrifuging of the solid particles.
  • the constructionaccording to the invention has the further advantage that liquid extracted duringrentry does not reach material'which is already located on the sieve face of the sieve drum as could be the case in known constructions where the liquid always separates on the delivery sided bounding surfaces of the feed chamber.
  • a frusto-.conical feed drum 9 can have the shape of a hollow body of revolution with an inner face having anarched meridian curve, either the concave Vor convex side of the meridian curve facing the axis of rotation.
  • a push-type centrifuge comprising a sieve drum having an open end and being mounted with its opposite Yend to rotate about an axis, in which sieve drum material'is centrifuged while beingconveyed in the axial direction toward said open end; a rotary feed device arranged within saidsieve drum coaxially therewith; said rotary feed device comprising a feed drum of generally frusto-conical shape diverging in the direction toward the open end of said sieve drum and a pusher ring rigidly connected to the peripheral end of said feed drum and having its outer circumference in close proximity to the inner surface of said sieve drum; a stationary feed device for leading material to be centrifuged into said feed drum, the material thereby being caused to rotate and to travel along the inner surface of the feed drum and the pusher ring toward the inner surface of the sieve drum; and supporting and driving means for said rotary feed device causing said rotary feed device to rotate with the sieve drum while allowing axial reciprocatory displacement in relation to kone another,
  • a push-type centrifuge comprising a hollow rotary shaft, a boss mounted overhung on a free end of said hollowshaft; a sieve drum being connected with one end to the outer circumference of said boss and having an open free end remote from said shaft; a central shaft arranged within said hollow shaft coaxially therewith and having an end projecting from said free end of the hollow shaft; means drivingly interconnecting said hollow shaft and said central shaft while allowing axial reciprocatory movement in relation to one another; a
  • a feed drum of generally frusto-conical shape arranged coaxially with said central shaft and having its inner end fastened on the peripheral end of said disc boss and diverging toward the open end of the sieve drum; a pusher ring rigidly connected to the outer end of said feed drum and having its outer circumferencein' close proximity to the inner surface of the sieve drum, so that, with an axial reciprocating movement of the central shaft in relation to the hollow shaft, material to be centrifuged lying in said sieve drum is gradually pushed byV said pusher ring toward the open end of the sieve drum; and a stationary feed conduit leading into the interior of the sieve drum through the open end thereof and havinga discharge opening directed toward Vthepinner surface of said feed drum, so that material discharging from said feed conduit is caused to rotate with the feed drum and travels over the inner Vsurface thereof toward the sieve drum; and inside of the -to move therein while having a free surface ⁇ toward the inside

Landscapes

  • Centrifugal Separators (AREA)
US661857A 1956-06-07 1957-05-27 Push-type centrifuge Expired - Lifetime US2828021A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH800319X 1956-06-07

Publications (1)

Publication Number Publication Date
US2828021A true US2828021A (en) 1958-03-25

Family

ID=4537595

Family Applications (1)

Application Number Title Priority Date Filing Date
US661857A Expired - Lifetime US2828021A (en) 1956-06-07 1957-05-27 Push-type centrifuge

Country Status (6)

Country Link
US (1) US2828021A (de)
BE (1) BE557785A (de)
CH (1) CH340770A (de)
DE (1) DE1087978B (de)
FR (1) FR1176436A (de)
GB (1) GB800319A (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3087621A (en) * 1958-07-16 1963-04-30 Sharples Corp Centrifugal machine
US3136721A (en) * 1961-03-31 1964-06-09 Pennsalt Chemicals Corp Centrifugal solids dryer
US3136722A (en) * 1961-10-18 1964-06-09 Pennsalt Chemicals Corp Pusher-type centrifuge
US3182802A (en) * 1962-02-12 1965-05-11 Ametek Inc Centrifugal separator having a washing means
US3200622A (en) * 1961-05-24 1965-08-17 Gen Motors Corp Dry cleaning apparatus
US3224588A (en) * 1960-12-29 1965-12-21 Escher Wyss Ag Centrifuging device
US20150238977A1 (en) * 2014-02-26 2015-08-27 Ferrum Ag Centrifuge and method of loading a centrifuge
US20210316235A1 (en) * 2019-11-18 2021-10-14 Lg Chem, Ltd. Pressurizing centrifugal dehydrator

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017101345A1 (de) 2017-01-25 2018-07-26 Andritz Kmpt Gmbh Zentrifuge zur Stofftrennung

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE575942C (de) * 1929-02-13 1933-05-04 Gustav Ter Meer Dr Ing In einer zylindrischen Siebtrommel beweglicher Vorschubkolben fuer das Schleudergut
DE689951C (de) * 1937-12-11 1940-04-11 E H Gustav Ter Meer Dr Ing Dr Einlaufvorrichtung fuer eine Schleuder mit Schubboden

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3087621A (en) * 1958-07-16 1963-04-30 Sharples Corp Centrifugal machine
US3224588A (en) * 1960-12-29 1965-12-21 Escher Wyss Ag Centrifuging device
US3136721A (en) * 1961-03-31 1964-06-09 Pennsalt Chemicals Corp Centrifugal solids dryer
US3200622A (en) * 1961-05-24 1965-08-17 Gen Motors Corp Dry cleaning apparatus
US3136722A (en) * 1961-10-18 1964-06-09 Pennsalt Chemicals Corp Pusher-type centrifuge
US3182802A (en) * 1962-02-12 1965-05-11 Ametek Inc Centrifugal separator having a washing means
US20150238977A1 (en) * 2014-02-26 2015-08-27 Ferrum Ag Centrifuge and method of loading a centrifuge
US10639647B2 (en) * 2014-02-26 2020-05-05 Ferrum Ag Centrifuge with a feed device comprising a feed direction control and method of loading a centrifuge with a feed device comprising a feed direction control
US20210316235A1 (en) * 2019-11-18 2021-10-14 Lg Chem, Ltd. Pressurizing centrifugal dehydrator
US11833458B2 (en) * 2019-11-18 2023-12-05 Lg Chem, Ltd. Pressurizing centrifugal dehydrator

Also Published As

Publication number Publication date
GB800319A (en) 1958-08-27
BE557785A (de)
CH340770A (de) 1959-08-31
FR1176436A (fr) 1959-04-10
DE1087978B (de) 1960-08-25

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