GB787736A - Improvements in or relating to straining means in treatment towers - Google Patents

Improvements in or relating to straining means in treatment towers

Info

Publication number
GB787736A
GB787736A GB14409/54A GB1440954A GB787736A GB 787736 A GB787736 A GB 787736A GB 14409/54 A GB14409/54 A GB 14409/54A GB 1440954 A GB1440954 A GB 1440954A GB 787736 A GB787736 A GB 787736A
Authority
GB
United Kingdom
Prior art keywords
wall
chamber
doctor
cell
slurry
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
GB14409/54A
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.)
Repola Oy
Original Assignee
Rauma Repola Oy
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 Rauma Repola Oy filed Critical Rauma Repola Oy
Publication of GB787736A publication Critical patent/GB787736A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C9/00—After-treatment of cellulose pulp, e.g. of wood pulp, or cotton linters ; Treatment of dilute or dewatered pulp or process improvement taking place after obtaining the raw cellulosic material and not provided for elsewhere
    • D21C9/18—De-watering; Elimination of cooking or pulp-treating liquors from the pulp
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
    • B01D29/036—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting ring shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/64—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element
    • B01D29/6469—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers
    • B01D29/6476—Regenerating the filter material in the filter by scrapers, brushes, nozzles, or the like, acting on the cake side of the filtering element scrapers with a rotary movement with respect to the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B01D29/668—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with valves, e.g. rotating valves for coaxially placed filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/76—Handling the filter cake in the filter for purposes other than for regenerating
    • B01D29/86—Retarding cake deposition on the filter during the filtration period, e.g. using stirrers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
    • B01D29/90—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding
    • 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
    • D21D5/02—Straining or screening the pulp
    • D21D5/04—Flat screens

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Paper (AREA)

Abstract

787,736. Filters. RAUMA-REPOLA OY. May 17, 1954 [May 28, 1953], No. 14409/54. Class 46. A washer for treating slurries of fibrous matter in liquid comprising a strainer wall 1 having on one side a filtrate collecting chamber 3 and on the other a container 2 for the slurry and a doctor 4 relatively rotatable to the wall 1 and adapted for freeing the strainer wall of deposited matter and for introducing slurry upon the wall 1, has filtrate cells 12 adjacent the wall 1 and providing communication between the wall 1 and the chamber 3, a shoe member 8 relatively rotatable to the chamber 3 and provided with a conduit for liquid and adapted to cut off each cell in turn from the chamber 3 and to connect it to a cleaning liquid supply which passes through the cell and through part of the wall 1 corresponding to the cut-off cell, the action of the doctor 4 being synchronised to remove deposited matter from the wall 1 at the portion through which the cleaning liquid is introduced, and means for withdrawing filtrate from the chamber 3 and recycling it as cleaning liquid. As shown a pump 7 withdraws liquid from the chamber 3 and supplies it to the shoe member 8 and each cell 12 has a port 22 with which the shoe member 8, which rotates with the shaft 10 to which the doctor 4 is secured, communicates in turn. Slurry enters at 5 and passes to an annular chamber 13 and then to the interior of the doctor, the surface of the wall 1 within the doctor 4 having been cleared by a blade 15 thereon. In a modification the chamber 3 is formed separately from the cells 12 and communicates therewith by ducts. In a modified construction the doctor, the interior of which is directly fed with slurry, and the shoe member 8 are stationary and the wall 1 and cells rotate. One or more doctors may be used with a corresponding number of shoe members. It is stated that the strainer wall may be cylindrical. Specifications 717,654 and 787,737 are referred to.
GB14409/54A 1953-05-28 1954-05-17 Improvements in or relating to straining means in treatment towers Expired GB787736A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI787736X 1953-05-28
FI787737X 1953-05-28

Publications (1)

Publication Number Publication Date
GB787736A true GB787736A (en) 1957-12-18

Family

ID=32963834

Family Applications (2)

Application Number Title Priority Date Filing Date
GB22248/56A Expired GB787737A (en) 1953-05-28 1954-05-17 Improvements in or relating to strainer means in treatment towers
GB14409/54A Expired GB787736A (en) 1953-05-28 1954-05-17 Improvements in or relating to straining means in treatment towers

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB22248/56A Expired GB787737A (en) 1953-05-28 1954-05-17 Improvements in or relating to strainer means in treatment towers

Country Status (1)

Country Link
GB (2) GB787737A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107617261A (en) * 2017-10-30 2018-01-23 平湖市万顺达机械有限公司 A kind of sewage-treatment plant

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110939006B (en) * 2019-12-25 2021-10-15 海南奕德新材料科技有限公司 Paper pulp filter equipment of waste paper recovery processing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107617261A (en) * 2017-10-30 2018-01-23 平湖市万顺达机械有限公司 A kind of sewage-treatment plant

Also Published As

Publication number Publication date
GB787737A (en) 1957-12-18

Similar Documents

Publication Publication Date Title
GB1283052A (en) Method for centrifugally removing liquid from a mixture
FI62772C (en) TRYCKFILTER
GB787736A (en) Improvements in or relating to straining means in treatment towers
GB1388079A (en) Apparatus and method for processing suspensions containing fibrous material
CN205275431U (en) Dual sludge dewatering environmental protection equipment
US2174748A (en) Filter
ES479119A1 (en) Method for vacuum filtration
GB276356A (en) Method of and apparatus for disintegrating, grinding, reducing to fibres, or mixing moist or dry materials
GB1020736A (en) Improvements in filters for liquids
GB784980A (en) Continuous filtration apparatus
JPS5544311A (en) Washing method of tufted filter cloth and washing device
GB1335094A (en) Method and apparatus for filtering suspensions
GB1188091A (en) Rotary Drum Filters
GB1133526A (en) A process and means for filtration of yeast or other plant cellular material
GB816368A (en) Improvements in methods of and apparatus for filtering
GB178831A (en) Improvements in filtering apparatus
GB510034A (en) Improvements in and relating to the dewatering of materials, especially cellulose and the like on a rotary sieve cylinder
GB725220A (en) Improvements in or relating to bucket-drum filters
GB568712A (en) Improvements in or relating to the filtration of straw, grass and like pulp for paper making
SU820707A1 (en) Material grinder
GB556942A (en) Improvements in or relating to the liquid treatment of solid materials
GB191204830A (en) An Improved Method of and Apparatus for Centrifugally Drying, Sifting, or Filtering Substances.
GB459239A (en) Improvements in and relating to machines for treating articles with sand or the like
GB710478A (en) Improvements in or relating to rotary suction filters
GB995999A (en) Improvements in or relating to moulded pulp articles