US1377765A - Revolving suction-strainer - Google Patents

Revolving suction-strainer Download PDF

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Publication number
US1377765A
US1377765A US449497A US44949721A US1377765A US 1377765 A US1377765 A US 1377765A US 449497 A US449497 A US 449497A US 44949721 A US44949721 A US 44949721A US 1377765 A US1377765 A US 1377765A
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Prior art keywords
strainer
drum
suction
revolving
liquid
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Expired - Lifetime
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US449497A
Inventor
Elling Jens William Aegidius
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Myrens Verksted AS
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Myrens Verksted AS
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Publication date
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Priority to US449497A priority Critical patent/US1377765A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D37/00—Processes of filtration

Definitions

  • This invention has for its object a revolving suction strainer suitable for use in mechanical and chemical wood 4 pulp mills, paper factories as well as in other industries.
  • the strainer is suitably so arranged that the substantial portion of the working surface of the strainer is maintained above the level of the liquid.
  • Fig. 2 is a longitudinal sectional view of nions of the drum are situated above the j edge of the vat 5 so that only a minor part of the strainer surface 1 is immerged in the liquid.
  • An endless belt of oiled canvas (hospital canvas) or other-water tight material passes over rollers 6, 7, 8 and rests with its lower run upon the top portion of the I strainer.
  • an endless belt of'felt may be arranged upon which the pulp is talren up from the strainer surface. in this:
  • Patented May filth, 1199211..
  • the apparatus may be employed in connection with any kindof suspensions from which it is desired to remove the suspended particles.
  • a suction strainer comprising a revolving strainer drum with its straining surface arranged to be partially erged in liquid and non-straining means over a substantial portion of the straining surface not immerged.
  • a suction strainer comprising a revolving drum with its straining surface partially immersed in liquid and an endless belt of d.
  • a suction strainer according to claim 1 meansto preventair from being sucked into the interior of the strainer drum through such portions at the strainer surtill lltl) face which are not covered by the tight belt nor coated with pulp.
  • a suction strainer means to prevent air from being sucked into the interior of the strainer drum through such portions at the strainer surface which are not covered by the tight belt nor coated with pulp, said means comprising a slide mounted in the interior of the drum.
  • a suction strainer comprising a revolving strainer drum with its straining surface arranged to be partially immerged in liquid
  • a non-straining means covering a substantial exterior portion or the drum and means within the drum to prevent straining action of said surface between the surface of the liquid and the first mentioned means.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)

Description

J. W. E. ELLING.
REVOLVING SUCTION STRAINER.
APPLICATION FILED MAR. 3, 1921.
l @TFfifi Patented May 110, 11921 .rnns wntnran EGIDIUS nnnnre, or onnrsrmnm, nonwar, Assmnnon, no live nrnnns vnnns'rnn, or onnis'rramn, nonwar.
nnvonvrncsncrron-srnnrnnn.
Application filed March 3, 1921.
To all whom it may concern:
Be it known that l, JnNs WILLIAM EcrnIUs'lELLINc, a subject of the King of Norway, residing at Christiania, Norway, have invented certain new and useful Improvemen-ts in Revolving Suction-Strainers; and I do hereby declare the following to be a full, clear, and exact description of the 1nvention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or figures of reference marked thereon, which form a part of this specification.
This invention has for its object a revolving suction strainer suitable for use in mechanical and chemical wood 4 pulp mills, paper factories as well as in other industries.
An important feature of the present strainer as compared with known types of revolving suction strainers consists therein that the portion of the strainer which above the level of the liquid in which the strainer revolves is kept covered by an endless belt of a tightmaterial which prevents air from being sucked into t e interior of the strainer at this portion of the strainer surface.
lln addition to this feature the strainer is suitably so arranged that the substantial portion of the working surface of the strainer is maintained above the level of the liquid. 1
An embodiment of this invention is illustraited in the accompanying drawing in which Figure 1 is a transverse sectional view of the strainer.
Fig. 2 is a longitudinal sectional view of nions of the drum are situated above the j edge of the vat 5 so that only a minor part of the strainer surface 1 is immerged in the liquid. An endless belt of oiled canvas (hospital canvas) or other-water tight material passes over rollers 6, 7, 8 and rests with its lower run upon the top portion of the I strainer. In addition to the endless beltof watertight material an endless belt of'felt may be arranged upon which the pulp is talren up from the strainer surface. in this:
Specification of Letters Patent.
Patented May filth, 1199211..
Serial No. =9, l97.
result in squeezing water out of the pulp layer between the belt and the strainer surface. T he water will flow through openings 9 in the wall of the drum and into the sucti on chamber 11 partitioned in the drum by a transverse wall 10, and from the chamber 11 the water is sucked out through the suction pipe 13 with downwardly directed orifice 12. The pipe 13 extends through the hollow trunnion 3 of the drum, and a studing box. This pipe does not rotate with the drum. To prevent air from being sucked in at that portion of the strainer surface, which is situated between the roller 6 and the level of the liquid a slide 14 is arranged, which is pressed against the wall of the suction chamber by means of a spring 15. The slide is hinged to a stationary'bar 16 con: nected to the pipe 13.
The apparatus may be employed in connection with any kindof suspensions from which it is desired to remove the suspended particles.
ll claim 1. A suction strainer comprising a revolving strainer drum with its straining surface arranged to be partially erged in liquid and non-straining means over a substantial portion of the straining surface not immerged.
2. A suction strainer comprising a revolving drum with its straining surface partially immersed in liquid and an endless belt of d. A suction strainer according to claim 1, meansto preventair from being sucked into the interior of the strainer drum through such portions at the strainer surtill lltl) face which are not covered by the tight belt nor coated with pulp.
5. A suction strainer according to claim 1 means to prevent air from being sucked into the interior of the strainer drum through such portions at the strainer surface which are not covered by the tight belt nor coated with pulp, said means comprising a slide mounted in the interior of the drum.
6. A suction strainer comprising a revolving strainer drum with its straining surface arranged to be partially immerged in liquid,
Let/7,765
a non-straining means covering a substantial exterior portion or the drum and means within the drum to prevent straining action of said surface between the surface of the liquid and the first mentioned means.
In testimony that I claim the foregoing as my invention, 1 have signed my name in presence of two subscribing witnesses.
. JENS WELLIAM IEGIDHUS Ell-1N6, Witnesses: 1 MAGAN BRIGGE, GULBORG GULBRANDSEN.
US449497A 1921-03-03 1921-03-03 Revolving suction-strainer Expired - Lifetime US1377765A (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2418600A (en) * 1944-02-01 1947-04-08 Scott Paper Co Method and machine for forming paper
US2455409A (en) * 1945-09-21 1948-12-07 Henry M Hunter Rotary filter
US2510254A (en) * 1941-06-19 1950-06-06 Kamyr Ab Suction filter
US2534563A (en) * 1946-11-18 1950-12-19 Kamyr Ab Filter drum and shielding shoe
US2561282A (en) * 1945-08-14 1951-07-17 Leffler Nils Gustav Shielding shoe for filters
US2560581A (en) * 1942-01-12 1951-07-17 Leffler Nils Gustav Shielding shoe for drums and similar filters
US2680996A (en) * 1951-11-03 1954-06-15 Packaging Materials Corp Corrugated paper machine
US2744633A (en) * 1951-10-02 1956-05-08 Georgia Kaolin Co Filters
US2754007A (en) * 1945-08-14 1956-07-10 Leffler Nils Gustav Shielding shoe for filters
EP0126655A2 (en) * 1983-05-24 1984-11-28 Dorr-Oliver Incorporated Vacuum expressor device for rotary drum filter
US20040094469A1 (en) * 2002-11-18 2004-05-20 Wen-Ta Hsieh High-effective squeeze vacuum dehydration machine

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2510254A (en) * 1941-06-19 1950-06-06 Kamyr Ab Suction filter
US2560581A (en) * 1942-01-12 1951-07-17 Leffler Nils Gustav Shielding shoe for drums and similar filters
US2418600A (en) * 1944-02-01 1947-04-08 Scott Paper Co Method and machine for forming paper
US2561282A (en) * 1945-08-14 1951-07-17 Leffler Nils Gustav Shielding shoe for filters
US2754007A (en) * 1945-08-14 1956-07-10 Leffler Nils Gustav Shielding shoe for filters
US2455409A (en) * 1945-09-21 1948-12-07 Henry M Hunter Rotary filter
US2534563A (en) * 1946-11-18 1950-12-19 Kamyr Ab Filter drum and shielding shoe
US2744633A (en) * 1951-10-02 1956-05-08 Georgia Kaolin Co Filters
US2680996A (en) * 1951-11-03 1954-06-15 Packaging Materials Corp Corrugated paper machine
EP0126655A2 (en) * 1983-05-24 1984-11-28 Dorr-Oliver Incorporated Vacuum expressor device for rotary drum filter
EP0126655A3 (en) * 1983-05-24 1986-06-18 Dorr-Oliver Incorporated Vacuum expressor device for rotary drum filter
US20040094469A1 (en) * 2002-11-18 2004-05-20 Wen-Ta Hsieh High-effective squeeze vacuum dehydration machine

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