EP0041532A1 - Dispositif dans un filtre-presse a chambre et procede d'utilisation du dispositif - Google Patents

Dispositif dans un filtre-presse a chambre et procede d'utilisation du dispositif

Info

Publication number
EP0041532A1
EP0041532A1 EP81900025A EP81900025A EP0041532A1 EP 0041532 A1 EP0041532 A1 EP 0041532A1 EP 81900025 A EP81900025 A EP 81900025A EP 81900025 A EP81900025 A EP 81900025A EP 0041532 A1 EP0041532 A1 EP 0041532A1
Authority
EP
European Patent Office
Prior art keywords
filter
cloth
plate
cake
membranes
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.)
Withdrawn
Application number
EP81900025A
Other languages
German (de)
English (en)
Inventor
Lars Hallen
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.)
NORDISKA VATTENPROJEKT AB-NOVA
Original Assignee
NORDISKA VATTENPROJEKT AB-NOVA
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 NORDISKA VATTENPROJEKT AB-NOVA filed Critical NORDISKA VATTENPROJEKT AB-NOVA
Publication of EP0041532A1 publication Critical patent/EP0041532A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/12—Filter presses, i.e. of the plate or plate and frame type
    • B01D25/164—Chamber-plate presses, i.e. the sides of the filtering elements being clamped between two successive filtering plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/12—Filter presses, i.e. of the plate or plate and frame type
    • B01D25/172—Plate spreading means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/32—Removal of the filter cakes
    • B01D25/34—Removal of the filter cakes by moving, e.g. rotating, the filter elements

Definitions

  • Dewatering can be effected, for example, in a chamber filter press, whereby a higher dry content and thereby a substantial reduction of the sludge volume is obtained.
  • the present invention has the object to facilitate the utilization of a chamber filter press in connection with the dewatering of waste sludge, and particularly to facilitate the removal of the sludge cakes from the filter plates and clothes.
  • This object is achieved according to the invention, in that between a filter cloth covering the plate and the plate one or more membranes are provided, which cover only a part of the total filter plate surface, and which by supply of a medium under pressure can be expanded from the compressed position assumed at the pressing so as to extend or bulge the filter cloth so that the contact surface between the cloth and the filter cake decreases, and thereby also the adherence of the filter cake on the cloth decreases, so that the filter cake due to gravity detaches from the cloth and plate.
  • the membranes preferably can have the form of hoses, and the expansion is effected by compressed air.
  • rubber membranes can alternatingly be filled with air and emptied. The pulsating motion to which the filter clothes thereby are subjected, causes vibrations of the sludge cake, which thereby loosens.
  • the invention implies the possibility of separating several (possibly all) filter plates from each other at the same time, whereby the time required for emptying is reduced substantially.
  • the mechanism for moving the plates besides, can be simple because it can be based on compressed air.
  • the movable parts even can be restricted to be only the plates, and the membrane motion is utilized for separating the plates.
  • Fig. 1 is a schematic lateral view of some filter plates in a chamber filter press
  • Fig . 2 is a front view of a filter plate
  • Fig . 3 is a lateral sectional view in greater detail
  • Fig . 4 is a sectional view of two filter plates and an intermediate filter cake
  • Fig . 5 shows a complementary separation device.
  • the chamber filter press shown in Fig. 1 schematically comprises a stand 11, in which a plurality of filter plates 1 are flexibly suspended.
  • the filter plate package is com pressed for pressing out the water by means of a hydraulic piston 12 and an intermediate plate 13.
  • each filter plate 1 includes on each side cupped recesses 2 so that only a wide edge remains which extends all about.
  • Each filter plate 1 is coated on both sides with filter cloth 3, which is stretched so loosely that it can be pressed into the cupped recess 2 in the filter plate 1.
  • the filter cloth is attached to the filter plate along the edge extending all about and to the centre of the recess 2.
  • In the filter plate drain passageways are arranged, which are shown schematically in the form of a tap at 4.
  • each recess 2 in the respective filter plate two (or more) soft rubber hoses 5 are provided, one on each side of the central attachment point of the filter cloth.
  • the rubber hoses 5 are connected to sealed air passageways 15, which extend through the edges of the filter plate 1 out to compressed air connections (not shown).
  • the hoses 5 are closed at their opposite ends.
  • the membranes have designs other than rubber hoses, and also the pressure medium may be another one than air.
  • a wheel 9 can be used which is located above the filter plates and upon rotation moves one plate at a time, in that a recess 10 in the wheel hooks on a pin attached to the respective filter plate.
  • the distance, through which each plate is moved, is determined by the wheel diameter.
  • the wheel is fixed in vertical direction and moves horizontally when a plate is being moved, whereby the plate next in turn is moved at the next wheel rotation.
  • This complementary opening mechanism is particularly motivated when the filter press has great length, because then the force from the membranes may not be sufficient for the distribution of the filter plates.
  • FIG. 5 appears in detail how the filter plates are flexibly suspended on horizontal, horizontally movable pins 7 via strips or the like 8.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

Abstract

Un dispositif monte dans la chambre d'un filtre-presse pour liberer les boues comprimees sous forme de gateaux de filtre; a cet effet, des tuyaux de caoutchouc (5) sont disposes entre une plaque de filtre (1) et une toile de filtre (3), lesquels tubes, lorsque le gateau de filtre doit etre libere, sont expanses par de l'air comprime de telle sorte que le gateau de filtre soit libere de la plaque de filtre.
EP81900025A 1979-12-06 1980-12-05 Dispositif dans un filtre-presse a chambre et procede d'utilisation du dispositif Withdrawn EP0041532A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE7910058 1979-12-06
SE7910058A SE7910058L (sv) 1979-12-06 1979-12-06 Anordning vid kammarfilterpress

Publications (1)

Publication Number Publication Date
EP0041532A1 true EP0041532A1 (fr) 1981-12-16

Family

ID=20339488

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81900025A Withdrawn EP0041532A1 (fr) 1979-12-06 1980-12-05 Dispositif dans un filtre-presse a chambre et procede d'utilisation du dispositif

Country Status (5)

Country Link
EP (1) EP0041532A1 (fr)
FI (1) FI803798L (fr)
NO (1) NO812652L (fr)
SE (1) SE7910058L (fr)
WO (1) WO1981001665A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3710353A1 (de) * 1987-03-28 1988-10-13 Rittershaus & Blecher Gmbh Kammerfilterpresse
CN108434802B (zh) * 2018-06-29 2020-11-17 宜昌皓月建设工程有限公司 一种大型城市污水处理厂污泥压滤装置
CN109011748B (zh) * 2018-09-07 2021-04-27 浙江胜达祥伟化工有限公司 一种高效的隔膜滤板压滤机
CN112807789B (zh) * 2020-12-18 2022-12-13 濮琴兰 一种过滤机的过滤板

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT201615B (de) * 1955-03-29 1959-01-10 Otto Emele Verfahren zum Entfeuchten von Preßgut und zum Ablösen der Preßkuchen in einer Filterpresse und Filterpresse zur Ausübung des Verfahrens
US3270887A (en) * 1960-12-12 1966-09-06 Almasfuezitoei Timfoeldgyar Filter presses for separating solids from liquids
BE623481A (fr) * 1961-10-12
DE1201812B (de) * 1963-04-10 1965-09-30 Otto Emele Filterpressenplatte zum selbsttaetigen Loesen des Filterkuchens
US3347383A (en) * 1965-11-19 1967-10-17 Shriver & Company Inc T Filter press
US3402667A (en) * 1967-04-03 1968-09-24 Panther Pumps & Equipment Co Fluid power transfer apparatus
GB1229039A (fr) * 1967-09-27 1971-04-21
US3680981A (en) * 1970-12-21 1972-08-01 Josef Wagner Pump and method of driving same
DE2257690A1 (de) * 1972-11-24 1974-05-30 Walter Beck Kg Kontroll Und Fe Hydraulisch oder druckluftbetaetigte geschlossene membran-hub-dose
SE389697B (sv) * 1975-04-07 1976-11-15 G A Nilsson Tryckmediedriven slagmekanism
DE2535524C3 (de) * 1975-08-08 1979-10-04 Knorr-Bremse Gmbh, 8000 Muenchen Hubzylinder fUr Schienenbremsmagnete

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8101665A1 *

Also Published As

Publication number Publication date
FI803798A7 (fi) 1981-06-07
FI803798L (fi) 1981-06-07
NO812652L (no) 1981-08-05
WO1981001665A1 (fr) 1981-06-25
SE7910058L (sv) 1981-06-07

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19810805

AK Designated contracting states

Designated state(s): AT CH DE FR GB LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19830309

RIN1 Information on inventor provided before grant (corrected)

Inventor name: HALLEN, LARS