GB336252A - Improvements in screens - Google Patents

Improvements in screens

Info

Publication number
GB336252A
GB336252A GB2057229A GB2057229A GB336252A GB 336252 A GB336252 A GB 336252A GB 2057229 A GB2057229 A GB 2057229A GB 2057229 A GB2057229 A GB 2057229A GB 336252 A GB336252 A GB 336252A
Authority
GB
United Kingdom
Prior art keywords
spout
mill
screening
disc
cylinder
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
Application number
GB2057229A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2057229A priority Critical patent/GB336252A/en
Publication of GB336252A publication Critical patent/GB336252A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/18—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force
    • D21D5/20—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force in apparatus with a horizontal axis
    • 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
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/08—Separating solids from solids by subjecting their mixture to gas currents while the mixtures are supported by sieves, screens, or like mechanical elements
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/18—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force
    • D21D5/22—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force in apparatus with a vertical axis

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Crushing And Grinding (AREA)
  • Combined Means For Separation Of Solids (AREA)

Abstract

336,252. Bjerre, S. M. July 4, 1929. Fixed sieves.-Relates to apparatus for sifting milled products of the kind comprising a cylindrical sleeve 1, Fig. 1, formed with one or more screening surfaces 7 against which the materials are thrown by a rotating drum 2 carrying inclined vanes 3 which convey the materials through the cylinder, and consists in making the pitch of the conveying members less at the outlet end of the cylinder than in the screening area so as to provide an obstruction to the discharge of the unscreened material and prevent a blow-out. As shown in Fig. 1, the obstructing member is in the form of a disc 12 carried by the rotating drum and forming with the sides of the cylindrical casing a restricted passage 14. Further obstruction may be caused by providing vanes 17 on the edge of the disc 12 to project the material radially in the form of a curtain. The discharge chamber 11 with its spout 10 may be provided with an adjustable overflow board 15 and may be mounted rotatably to enable the spout to be directed as required. A feed screw 4 may be provided at the inlet end of the apparatus. In a modification the conveying and obstructing members may be in the form of continuous helical ribs. The apparatus may be used in combination with a grinding mill 19 as shown in Fig. 5, the products of the mill being introduced to the screening apparatus by the inlet 5 and the unscreened material returned to the mill by the spout 10.
GB2057229A 1929-07-04 1929-07-04 Improvements in screens Expired GB336252A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2057229A GB336252A (en) 1929-07-04 1929-07-04 Improvements in screens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2057229A GB336252A (en) 1929-07-04 1929-07-04 Improvements in screens

Publications (1)

Publication Number Publication Date
GB336252A true GB336252A (en) 1930-10-06

Family

ID=10148117

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2057229A Expired GB336252A (en) 1929-07-04 1929-07-04 Improvements in screens

Country Status (1)

Country Link
GB (1) GB336252A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2523259A (en) * 1946-12-24 1950-09-26 Case Co J I Device for cleaning grain
US3458038A (en) * 1966-06-02 1969-07-29 Ingersoll Rand Canada Screening apparatus
US3483975A (en) * 1968-05-03 1969-12-16 Joseph Whalen Supplemental separator for grain cleaning machines
US3618761A (en) * 1969-06-30 1971-11-09 Int Harvester Co Clean-boll separator conveyor for cotton harvester
DE3006482A1 (en) * 1980-02-21 1981-10-08 J.M. Voith Gmbh, 7920 Heidenheim ROTATIONAL SORTER
EP0094022A2 (en) * 1982-05-12 1983-11-16 J.M. Voith GmbH Rotor for a screening apparatus for the purification of pulp suspensions, particularly in the paper industry
FR2527946A1 (en) * 1982-06-02 1983-12-09 Commissariat Energie Atomique Solids separation apparatus esp. for nuclear fuel pellets - employs archimedean screw in perforated barrel to separate granules by size
JPS62191081A (en) * 1986-12-24 1987-08-21 株式会社　四国製作所 Vertical grain sorter
WO1991014516A1 (en) * 1990-03-23 1991-10-03 Lindéma Kommanditbolag Vertical screening device with feeding screw

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2523259A (en) * 1946-12-24 1950-09-26 Case Co J I Device for cleaning grain
US3458038A (en) * 1966-06-02 1969-07-29 Ingersoll Rand Canada Screening apparatus
US3483975A (en) * 1968-05-03 1969-12-16 Joseph Whalen Supplemental separator for grain cleaning machines
US3618761A (en) * 1969-06-30 1971-11-09 Int Harvester Co Clean-boll separator conveyor for cotton harvester
DE3006482A1 (en) * 1980-02-21 1981-10-08 J.M. Voith Gmbh, 7920 Heidenheim ROTATIONAL SORTER
EP0094022A2 (en) * 1982-05-12 1983-11-16 J.M. Voith GmbH Rotor for a screening apparatus for the purification of pulp suspensions, particularly in the paper industry
DE3217824A1 (en) * 1982-05-12 1983-11-17 J.M. Voith Gmbh, 7920 Heidenheim ROTOR FOR SORTING MACHINES FOR CLEANING FIBER SUSPENSIONS, ESPECIALLY SUCH OF THE PAPER INDUSTRY
EP0094022A3 (en) * 1982-05-12 1984-10-24 J.M. Voith Gmbh Rotor for a screening apparatus for the purification of pulp suspensions, particularly in the paper industry
FR2527946A1 (en) * 1982-06-02 1983-12-09 Commissariat Energie Atomique Solids separation apparatus esp. for nuclear fuel pellets - employs archimedean screw in perforated barrel to separate granules by size
JPS62191081A (en) * 1986-12-24 1987-08-21 株式会社　四国製作所 Vertical grain sorter
WO1991014516A1 (en) * 1990-03-23 1991-10-03 Lindéma Kommanditbolag Vertical screening device with feeding screw
US5230431A (en) * 1990-03-23 1993-07-27 Lindema Kommanditbolag Vertical screening device with feeding screw

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