US3049241A - Screen lining for a push-type centrifuge - Google Patents

Screen lining for a push-type centrifuge Download PDF

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Publication number
US3049241A
US3049241A US833534A US83353459A US3049241A US 3049241 A US3049241 A US 3049241A US 833534 A US833534 A US 833534A US 83353459 A US83353459 A US 83353459A US 3049241 A US3049241 A US 3049241A
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United States
Prior art keywords
members
screen
push
drum
centrifuged
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Expired - Lifetime
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US833534A
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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
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Escher Wyss AG
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Filing date
Publication date
Application filed by Escher Wyss AG filed Critical Escher Wyss AG
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/08—Rotary bowls
    • B04B7/18—Rotary bowls formed or coated with sieving or filtering elements

Definitions

  • This invention relates to a screen lining for the centrifugal drum of a push-type centrifuge, having barshaped members extending in the direction of the drum axis, which members have glide surfaces along which the material being centrifuged is pushed through the drum.
  • the centrifuged material is delicate, the solid particles pushed over the glide surfaces may be damaged or made unattractive.
  • the edges and faces of the crystals may be worn ofi and the crystals lose their brilliance and become dull in appearance.
  • FIGURE 1 shows an axial section through a push-type centrifuge
  • FIGURES 2 to 4 are perspective views of series of different screen members.
  • the push-type centrifuge shown in FIGURE 1 has in a housing 1 a centrifugal drum 2 with a screen lining comprising screen members 3.
  • An inlet hopper 4 supplies the material to be centrifuged, a pusher plate 5 pushes the material over the screen surface of the drum 2, when it is given an axial reciprocating movement.
  • the screen members 3 have trough-like depressions 7 in their glide surfaces 6. A portion of the liquid extracted from the centrifuged material will be retained in these depressions, while the greater portion of the liquid will pass over the trough edges into the gaps between the screen members or directly into said gaps and leave the centrifuge.
  • the liquid retained in the trough-like depressions now acts as a lubricant film between the material being centrifuged and the screen members.
  • This lubrication considerably reduces the wear on the centrifuged material and on the screen lining. In this way, the solid substance of the centrifuged material can be obtained and discharged from the centrifuge in a high-grade condition, the life of the centrifugal screen can be increased and the work of discharge reduced.
  • the glide surfaces in the region 3 covered by the pusher plate 5 is not interrupted.
  • the trough-like depressions 7 commence in the throughput direction of the centrifuged material only after the region over which the reciprocating pusher member passes.
  • perforations 8 are preferably provided there in the members 3 for the discharge of the said liquid.
  • the troughs could extend, however, over the entire length of the members and could be open in the axial direction at the inlet and/ or outlet end of the members.
  • the screen members shown in FIGURE 3 consist of plate strips 9.
  • said plates In the region of the reciprocating pusher member 5, said plates have a flat part 9 This part, however, could also be curved in accordance with the radius of the centrifugal drum.
  • the plate strips are curved trough-like and at the discharge end, there follows a part 9 which is curved in roof fashion, i.e., provided with an'inward transverse how.
  • the bar-like screen members may be connected together.
  • the screen members shown in FIGURE 4 consists of a single plate 16, divided by slits into individual members 11. These members 11 are here provided with pressed-in corrugations 12 forming the troughs.
  • the said slits may be produced for example in a simple manner by means of plate shears. Instead of pressing in the corrugations, the strips 11 could also be curved for example by bending.
  • Vvhat is claimed is:
  • a screen lining comprising bar-shaped members extending in the direction of the drum axis and spaced circumferentially over at least a portion of their lengths to define radial openings through which separated liquid may pass, the members having glide surfaces along which the material being centrifuged is pushed through the drum; and means for retaining a pool of liquid on each of said bar-shaped members comprising a longitudinal groove in the inner surface thereof extending over a substantial portion of said glide surface, whereby wear of the barshaped members and dam-age to the material being proc essed are reduced.
  • a centrifuge of the type including a rotary foraminous drum for separating the solid and liquid components of the material being centrifuged, a pusher member encircled by the drum and axially shi-ftable therein, means for feeding the material to be centrifuged into the drum; said drum having an inside screen lining comprising barshaped members extending in the direction of the drum axis and spaced circumferentially over at least a portion of their lengths to define radial openings through which separated liquid may pass, the members having glide sur- 3 4 faces on which the material being centrifuged is pushed References Cited in the file of this patent through the drum when the pusher member is given an UNITED STATES PATENTS axial reciprocating movement; and means for retaining a pool of liquid on each of said bar-shaped members 1,246,035 1917 comprising a longitudinal groove in the inner surface 5 1,969,178 Klrby 1934 thereof extending over a substantial portion of said glide 2,720,982 Stuart 1955 surface axially outside

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  • Centrifugal Separators (AREA)
US833534A 1958-09-19 1959-08-13 Screen lining for a push-type centrifuge Expired - Lifetime US3049241A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH6410958 1958-09-19

Publications (1)

Publication Number Publication Date
US3049241A true US3049241A (en) 1962-08-14

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ID=4525427

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US833534A Expired - Lifetime US3049241A (en) 1958-09-19 1959-08-13 Screen lining for a push-type centrifuge

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US (1) US3049241A (en))
CH (1) CH361756A (en))
DE (1) DE1073397B (en))
FR (1) FR1233972A (en))
GB (1) GB913892A (en))
NL (2) NL103403C (en))

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3401800A (en) * 1965-10-04 1968-09-17 Bird Machine Co Centrifuge bowl
US20200316501A1 (en) * 2017-12-19 2020-10-08 Xeros Limited Filter for a treatment apparatus
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
CH624315A5 (en)) * 1977-07-22 1981-07-31 Escher Wyss Ag

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1246035A (en) * 1915-09-21 1917-11-13 Lewis H Taylor Jr Centrifugal separator.
US1969178A (en) * 1927-12-06 1934-08-07 Apex Electrical Mfg Co Laundry machine
FR774137A (fr) * 1933-06-10 1934-11-30 Tôle perforée pour centrifugeuses
GB578202A (en) * 1944-02-10 1946-06-19 Albert William Sizer Improvements in machines for the extraction of oil or other liquid from seeds, meal and the like
US2720982A (en) * 1951-11-27 1955-10-18 Hercules Powder Co Ltd Centrifuge

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1246035A (en) * 1915-09-21 1917-11-13 Lewis H Taylor Jr Centrifugal separator.
US1969178A (en) * 1927-12-06 1934-08-07 Apex Electrical Mfg Co Laundry machine
FR774137A (fr) * 1933-06-10 1934-11-30 Tôle perforée pour centrifugeuses
GB578202A (en) * 1944-02-10 1946-06-19 Albert William Sizer Improvements in machines for the extraction of oil or other liquid from seeds, meal and the like
US2720982A (en) * 1951-11-27 1955-10-18 Hercules Powder Co Ltd Centrifuge

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3401800A (en) * 1965-10-04 1968-09-17 Bird Machine Co Centrifuge bowl
US20200316501A1 (en) * 2017-12-19 2020-10-08 Xeros Limited Filter for a treatment apparatus
US12138568B2 (en) * 2017-12-19 2024-11-12 Xeros Limited Centrifugal filter unit for a washing machine having a removable portion shaped to scrape against a side wall during its removal
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
NL241771A (en))
CH361756A (de) 1962-04-30
FR1233972A (fr) 1960-10-13
NL103403C (en))
DE1073397B (de) 1960-01-14
GB913892A (en) 1962-12-28

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