FR2442799A1 - - Google Patents

Info

Publication number
FR2442799A1
FR2442799A1 FR7834034A FR7834034A FR2442799A1 FR 2442799 A1 FR2442799 A1 FR 2442799A1 FR 7834034 A FR7834034 A FR 7834034A FR 7834034 A FR7834034 A FR 7834034A FR 2442799 A1 FR2442799 A1 FR 2442799A1
Authority
FR
France
Prior art keywords
pressing
bands
rollers
press rollers
sludge
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.)
Granted
Application number
FR7834034A
Other languages
French (fr)
Other versions
FR2442799B1 (en
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.)
Chaplain Et Cie SA M
Original Assignee
Chaplain Et Cie SA M
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 Chaplain Et Cie SA M filed Critical Chaplain Et Cie SA M
Priority to FR7834034A priority Critical patent/FR2442799B1/fr
Priority to CH1055479A priority patent/CH641426A5/en
Priority to BE0/198376A priority patent/BE880371A/en
Priority to IT7969318A priority patent/IT7969318A0/en
Publication of FR2442799A1 publication Critical patent/FR2442799A1/fr
Application granted granted Critical
Publication of FR2442799B1 publication Critical patent/FR2442799B1/fr
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/24—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using an endless pressing band
    • B30B9/247—Pressing band constructions
    • 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
    • B01D33/04—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are impervious for filtering
    • B01D33/042—Filters with filtering elements which move during the filtering operation with filtering bands or the like supported on cylinders which are impervious for filtering whereby the filtration and squeezing-out take place between at least two filtering bands
    • 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
    • B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
    • B01D33/62—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying
    • B01D33/64—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by compression
    • B01D33/646—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by compression by pressure rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/24—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using an endless pressing band
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/24—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using an endless pressing band
    • B30B9/243—The squeezing-out being performed in several stages

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatment Of Sludge (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The machine for dehydrating sludge comprises two endless filter bands (17, 18) which over a part of their length have a common path made up of a number of substantially horizontal superposed pressing regions in which the sludge is compressed between the bands by the action of rollers. In each pressing zone the upper press rollers (29, 31, 33) are gradually closer to the lower rollers (28, 30, 32), the press rollers having a sufficiently small diameter and an arrangement relative to one another such that the pressing forces exerted on the bands do not subject the latter to damaging mechanical stresses at any point of the pressing zones.
FR7834034A 1978-12-01 1978-12-01 Expired FR2442799B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7834034A FR2442799B1 (en) 1978-12-01 1978-12-01
CH1055479A CH641426A5 (en) 1978-12-01 1979-11-28 Machine for dehydrating sludge
BE0/198376A BE880371A (en) 1978-12-01 1979-11-30 MACHINE FOR DEWATERING SLUDGE
IT7969318A IT7969318A0 (en) 1978-12-01 1979-11-30 MACHINE FOR SLUDGE DEHYDRATION

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7834034A FR2442799B1 (en) 1978-12-01 1978-12-01

Publications (2)

Publication Number Publication Date
FR2442799A1 true FR2442799A1 (en) 1980-06-27
FR2442799B1 FR2442799B1 (en) 1981-12-31

Family

ID=9215622

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7834034A Expired FR2442799B1 (en) 1978-12-01 1978-12-01

Country Status (4)

Country Link
BE (1) BE880371A (en)
CH (1) CH641426A5 (en)
FR (1) FR2442799B1 (en)
IT (1) IT7969318A0 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2651176A1 (en) * 1989-08-25 1991-03-01 Burger Raymond METHOD AND DEVICE FOR CONTINUOUS PRESSING FOR THE EXTRACTION OF LIQUIDS.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1444253A (en) * 1921-10-12 1923-02-06 Lee William Andrew Press cloth
DE2329283A1 (en) * 1973-06-08 1975-02-20 Klein Alb Kg Sieve belt dewatering press - for settled or treated sewage sludge
FR2281320A1 (en) * 1974-08-08 1976-03-05 Rittershaus & Blecher Gmbh Dewatering of sludge - by adding two flocculating agents giving opposite charges successively before filtering
FR2281216A1 (en) * 1974-08-08 1976-03-05 Rittershaus & Blecher Gmbh Pressurised endless belt screw - for sludge dewatering has endless support belts around pressure rollers enclosing screen belts

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1444253A (en) * 1921-10-12 1923-02-06 Lee William Andrew Press cloth
DE2329283A1 (en) * 1973-06-08 1975-02-20 Klein Alb Kg Sieve belt dewatering press - for settled or treated sewage sludge
FR2281320A1 (en) * 1974-08-08 1976-03-05 Rittershaus & Blecher Gmbh Dewatering of sludge - by adding two flocculating agents giving opposite charges successively before filtering
FR2281216A1 (en) * 1974-08-08 1976-03-05 Rittershaus & Blecher Gmbh Pressurised endless belt screw - for sludge dewatering has endless support belts around pressure rollers enclosing screen belts

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2651176A1 (en) * 1989-08-25 1991-03-01 Burger Raymond METHOD AND DEVICE FOR CONTINUOUS PRESSING FOR THE EXTRACTION OF LIQUIDS.
US5082562A (en) * 1989-08-25 1992-01-21 Raymond Burger Dehydration press

Also Published As

Publication number Publication date
IT7969318A0 (en) 1979-11-30
FR2442799B1 (en) 1981-12-31
CH641426A5 (en) 1984-02-29
BE880371A (en) 1980-05-30

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Legal Events

Date Code Title Description
ST Notification of lapse