US3491682A - Press concentrator - Google Patents

Press concentrator Download PDF

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Publication number
US3491682A
US3491682A US700244A US3491682DA US3491682A US 3491682 A US3491682 A US 3491682A US 700244 A US700244 A US 700244A US 3491682D A US3491682D A US 3491682DA US 3491682 A US3491682 A US 3491682A
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US
United States
Prior art keywords
concentrator
press
discharge
sludge
drum
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 - Lifetime
Application number
US700244A
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English (en)
Inventor
Nils Olof Nilsmar
Alf Torsten Okvist
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.)
MASKIN NA EIE AB
MASKIN N A EIE AB
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MASKIN NA EIE AB
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 MASKIN NA EIE AB filed Critical MASKIN NA EIE AB
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Publication of US3491682A publication Critical patent/US3491682A/en
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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
    • C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
    • 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
    • B30B9/04—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 press rams
    • B30B9/06—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 press rams co-operating with permeable casings or strainers

Definitions

  • a press concentrator for sludge having a press housing, a feed funnel, a perforated drum concentrator, a press plunger, a concentrator cone, and discharge means provided with holes and movable into and Out of the drum concentrator for discharging the sludge therefrom.
  • This invention relates to concentration means for sludges and the like, and it refers particularly toan arrangement which operates by means of a press plunger.
  • Concentration means of this type are previously known, comprising a press plunger reciprocating in relation to a counter pressure member, for example a concentrator cone.
  • a counter pressure member for example a concentrator cone.
  • the pressed material is discharged with the help of the press plunger after the counter pressure member was moved aside or past the material.
  • the compression normally is carried out in a non-closed chamber, by pressing the material against the concentrator cone and discharging it past the base of said cone during the press Operation proper. This gives rise to channel formation and non-uniform compression of the material, so that the dry content is not uniform across the material discharge.
  • An arrangement of this type thus, is not satisfactory, if the concentrated material is intended for immediate burning.
  • the present invention relates to an improved press concentrator which is adapted continuously to deliver material with a very high dry content and which is cheap in operation, cheap to procure and requires only little space.
  • the invention comprises a press housing with a feed funnel and perforated drum concentrator, a pressure plunger, a concentrator cone directed to the plunger and means for discharging the concentrated sludge.
  • the invention is characterized in that the discharge member is a reciprocating sleeve provided with a plurality of holes adapted to be filled with concentrated sludge for its discharge outside the drum concentrator.
  • jets of compressed air radially directed against the sleeve immediately outside the drum concentrator are utilized.
  • FIG. 1 a longitudinal section through an embodiment of the invention
  • FIG. 2 a cross-section through the discharge sleeve
  • FIG. 3 another embodiment of the invention
  • FIG. 4 a concentration assembly of a plurality of press concentrators.
  • FIG. 1 a horizontal press concentrator is shown which comprises a longitudinal press housing 1 provided with a vertical feed funnel 2 and a horizontal drum concentrator 3 disposed below said funnel, the wall of the concentrator being provided with a great number of small holes.
  • the drumconcentrator 3 can be removed for cleaning or exchange and is mounted at a supporting wall 12 and a partition wall 13 in the press housing.
  • a press plunger 4 can be reciprocated with the help of a presure cylinder 10, and at the opposite end of the drum concentrator a concentrator cone 5 is mounted stationary at a second partition wall 14 in the press housing.
  • a discharge sleeve 6 is arranged to be moved a distance into and out of the drum concentrator.
  • the discharge sleeve 6, which in greater detail is shown in FIG. 2, comprises a plurality of closely adjacent, preferably oblong holes 7 of outwardly tapering shape, the longitudinal direction of the holes extending in the radial plane along the circumference of the sleeve.
  • the holes 7 are preferably staggered relative one to another, for effectively discharging the pressed material.
  • the discharge sleeve 6 at its edge movable in the drum concentrator is chamfered to a scraping. edge adapted to scrape off sludge deposits from the Wall of the drum concentrator.
  • the discharge sleeve 6 is provided along its circumference with a groove for receiving a sealing to prevent sludge from being pressed out of the drum concentrator between the latter and the discharge sleeve.
  • This sealing groove is filled rapidly by sludge which builds up to form a very effective and cheap sealing.
  • the concentrator cone 5 is provided at its base portion lying within the drum concentrator 3 with a sealing groove corresponding to that in the discharge sleeve, in order effectively to seal the space between the discharge sleeve and the base of the concentrator cone.
  • the concentrator cone 5 On its base portion located outside the drum concentrator 3, the concentrator cone 5 is provided with a plurality of radially outwardly directed compressed air passages 9 which direct compressed air from the inside outwards against the holes 7 in the discharge sleeve 6 for blowing the holes clean from discharged material.
  • a collection funnel 15 for pressedout water and the like.
  • a discharge shaft 16 into which the discharge cylinder empties the discharged material with the help of the aforementioned compressed air jets whereafter the material can be collected on a conveyor belt or the like running below said shaft.
  • the discharge cylinder is operated with the help of a pressure cylinder 11 disposed at the corresponding end of the press housing, via a piston rod 17, and the compressed air for blowing clean the holes in the discharge sleeve is supplied through the pipe 18 at the partition wall 14.
  • the press concentrator operates as follows: The sludge is fed in through the funnel 2 to the drum concentrator 3, and thereafter the pressure cylinder 11 moves the discharge sleeve 6 to its outermost position. Thereafter the press plunger 4 is pressed against the concentrator cone 5 and thereby compresses the sludge in the drum concentrator 3. If the sludge quantity supplied proves to be too small for rendering possible efieetive concentration, the press plunger, of course, can be moved back until additional sludge is supplied whereafter it again presses the sludge against the concentrator cone.
  • the cone is designed with two or more conicities for increasing the eifectivity of the concentration operation.
  • the holes 7 of the discharge sleeve 6 are filled with concentrated sludge. Owing to the stepped design of the concentrator cone, maximum concentration is effected at its central portion.
  • the pressure cylinder 11 pulls back the discharge sleeve 6, the holes 7 of which are filled with concentrated 3 sludge.
  • the pressure in the sludge is increased, because the discharge sleeve takes along some sludge which is pressed into the sludge located closer to the base of the concentrator cone, thereby effecting a very high concentrating pressure for a certain period of time.
  • the press plunger may remain in its outermost position until the discharge cylinder entirely is in its innermost position, or the plunger may be pulled back earlier, depending on the continuity in the supply of new sludge, the dry content of the sludge, its consistency, etc.
  • the concentrator press operates vertically, whereby still more space can be saved.
  • FIG. 3 shows a longitudinal section through a vertical concentrator press.
  • a feed funnel 22 is mounted which is connected with a drum concentrator 23 located below.
  • a press plunger is arranged, and at its lower end is provided a concentrator cone 25 about which a discharge sleeve 26 can be reciprocated in the drum concentrator.
  • the press plunger 24 is stationary, while an assembly comprising the feed funnel 22, drum concentrator 23, concentrator cone 25 and discharge sleeve 26 moves upwardly and downwardly in relation to the press plunger.
  • the discharge sleeve thereby operates in two steps, i.e. one compressing step, during which it moves together with the remaining parts upwardly, and a filling step when it is being moved into the drum concentrator, during which movement its holes are filled with sludge.
  • the discharge sleeve may also first he moved to its filling position and thereafter together with the remaining parts move upwards during the compressing step.
  • the entire movable assembly moves downwards to its lowermost position whereafter the discharge sleeve 26 is pulled out of the drum concentrator and cleaned of sludge by compressed air supplied through passages in the base of the concentrator cone outside the drum concentrator.
  • the press plunger and the discharge sleeve operate in like manner as in the horizontal press concentrator.
  • a press concentrator for sludge and the like including a press housing with feed funnel, a perforated drum concentrator, a press plunger, a concentrator cone directed against the plunger, and a discharge member for the concentrated sludge
  • the discharge member comprises a discharge sleeve adapted to be moved into and out of the drum concentrator, said sleeve being provided with a plurality of holes to permit discharging the concentrated sludge from the drum concentrator.
  • a press concentrator according to claim 1 wherein the holes in said discharge sleeve are oblong and outwardly tapering, and extend closely adjacent to each other in a radial plane along the circumference thereof.
  • a press concentrator according to claim 1 and further comprising means for supplying compressed air radially against the discharge sleeve through passages at the base of the concentrator cone immediately outside the drum concentrator, whereby the holes in the discharge sleeve are cleared of the discharged sludge.
  • a press concentrator according to claim 1 wherein the press housing is arranged horizontally, and the press plunger and the discharge sleeve are horizontally movable in the drum concentrator and further comprising pressure cylinders for moving said sleeve and press plunger, the sludge being fed in vertically.
  • a press concentrator according to claim 1 wherein the press housing is arranged vertically and the feed funnel, drum concentrator, concentrator cone and discharge sleeve move together toward and away from a stationary press plunger, the discharge sleeve being adapted to also move relative to the remaining movable means for the discharge movement.
  • a press concentrator according to claim 1 wherein the press housing is arranged vertically and the ress plunger and discharge sleeve are vertically movable in the drum concentrator and further comprising pressure cylinders for moving said sleeve and press plunger, the sludge being fed in vertically through a feed funnel arranged about the press plunger.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Sludge (AREA)
  • Reciprocating Pumps (AREA)
US700244A 1967-01-26 1968-01-24 Press concentrator Expired - Lifetime US3491682A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE116967 1967-01-26

Publications (1)

Publication Number Publication Date
US3491682A true US3491682A (en) 1970-01-27

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ID=20257704

Family Applications (1)

Application Number Title Priority Date Filing Date
US700244A Expired - Lifetime US3491682A (en) 1967-01-26 1968-01-24 Press concentrator

Country Status (6)

Country Link
US (1) US3491682A (de)
AT (1) AT281868B (de)
DE (1) DE1627847A1 (de)
FR (1) FR1561323A (de)
GB (1) GB1164952A (de)
NO (1) NO117675B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4421022A (en) * 1980-03-31 1983-12-20 Burgin Kermit H Apparatus for producing and collecting a liquid extract and a dry by-product from a mash
GB2238964A (en) * 1989-08-04 1991-06-19 Yamamoto Mfg Pressing oil from vegetable matter
ITTO20090140A1 (it) * 2009-02-26 2010-08-27 Vm Press Srl Macchina per il trattamento della frazione organica di rifiuti solidi urbani
US10589486B2 (en) 2013-10-13 2020-03-17 Anaergia B.V. Device and method for pressing organic material out of waste

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK158149C (da) * 1987-03-31 1990-08-27 Optimal Miljoeteknik Aps Apparat til afvanding af slam

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US500490A (en) * 1893-06-27 grimm
US1135309A (en) * 1914-08-25 1915-04-13 Edgar T Meakin Press.
US1782273A (en) * 1928-03-22 1930-11-18 Riemann Otto Press
US2510764A (en) * 1945-06-29 1950-06-06 Stadler John Liquid-extracting press for drying fibrous materials
US2798424A (en) * 1955-04-14 1957-07-09 Equipment Dev Co Inc Filter
US2856846A (en) * 1953-10-28 1958-10-21 Fmc Corp Separator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US500490A (en) * 1893-06-27 grimm
US1135309A (en) * 1914-08-25 1915-04-13 Edgar T Meakin Press.
US1782273A (en) * 1928-03-22 1930-11-18 Riemann Otto Press
US2510764A (en) * 1945-06-29 1950-06-06 Stadler John Liquid-extracting press for drying fibrous materials
US2856846A (en) * 1953-10-28 1958-10-21 Fmc Corp Separator
US2798424A (en) * 1955-04-14 1957-07-09 Equipment Dev Co Inc Filter

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4421022A (en) * 1980-03-31 1983-12-20 Burgin Kermit H Apparatus for producing and collecting a liquid extract and a dry by-product from a mash
GB2238964A (en) * 1989-08-04 1991-06-19 Yamamoto Mfg Pressing oil from vegetable matter
ITTO20090140A1 (it) * 2009-02-26 2010-08-27 Vm Press Srl Macchina per il trattamento della frazione organica di rifiuti solidi urbani
WO2010097177A1 (en) * 2009-02-26 2010-09-02 Vm Press S.R.L. Machine for processing the organic fraction of urban solid waste
EP3112039A1 (de) * 2009-02-26 2017-01-04 DB Technologies BV Maschine und verfahren zur verarbeitung des organischen teils urbaner festabfälle
US10589486B2 (en) 2013-10-13 2020-03-17 Anaergia B.V. Device and method for pressing organic material out of waste
US11458701B2 (en) 2013-10-13 2022-10-04 Anaergia B.V. Device and method for pressing organic material out of waste

Also Published As

Publication number Publication date
AT281868B (de) 1970-06-10
GB1164952A (en) 1969-09-24
DE1627847A1 (de) 1971-02-25
FR1561323A (de) 1969-03-28
NO117675B (de) 1969-09-08

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