US3878102A - Locking means for filter plates in a filter press - Google Patents

Locking means for filter plates in a filter press Download PDF

Info

Publication number
US3878102A
US3878102A US405828A US40582873A US3878102A US 3878102 A US3878102 A US 3878102A US 405828 A US405828 A US 405828A US 40582873 A US40582873 A US 40582873A US 3878102 A US3878102 A US 3878102A
Authority
US
United States
Prior art keywords
filter
rack
actuating member
lever arm
movement
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
US405828A
Other languages
English (en)
Inventor
Oswald Busse
Hugo Klesper
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.)
Aqseptence Group GmbH
Original Assignee
Passavant Werke AG and Co KG
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 Passavant Werke AG and Co KG filed Critical Passavant Werke AG and Co KG
Application granted granted Critical
Publication of US3878102A publication Critical patent/US3878102A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B01D25/172—Plate spreading means

Definitions

  • This invention relates to locking means for filter plates in a filter press wherein actuating members provided on the plates are movable to an operative and an inoperative position for engagement and disengagement, respectively, with ratchet means.
  • the locking means prevents several plates from sticking to each other, from being shifted together when the press is opened and insures that only one plate is moved at a time, so that the cake may drop out and be disposed of.
  • locking means for filter plates have employed a con ventional pawl type element on a filter plate which engages a ratchet element on an adjacent filter plate so that all plates are interlocked.
  • the lock of the frontmost plate is automatically sprung open or opened by cam means moving in the direction in which the press is opened.
  • pawl type locking elements cooperate with a common ratchet element which is not an integral part of the filter plates and extends longitudinally of the filter press. Accordingly, adjacent filter plates are not linked to each other since all plates are independently connected to the common ratchet element. Due to this arrangement, improper operation of one filter plate pawl does not impair that of any of the preceding or following pawls so that the filter plates remain locked properly. To insure proper *breathing" an expansion of the plates, the ratchet element is movable into an open or inoperable position in which it is not engaged by the pawls and into a closed or operating position for engagement with the pawls.
  • FIG. 1 is a diagrammatic, side elevational view showing the upper parts of filter plates and the locking and opening means as viewed from one end of the stack of plates to be pulled apart;
  • FIG. 2 is a side elevational view showing the stack of plates after they have been shifted
  • FIG. 3 is a view taken generally along the line IIIIII of FIG. 1 partly in section and showing the suspension means for a filter plate;
  • FIGS. 4 and 5 are side elevational views showing details of the locking means in two different positions so as to show the centers of gravity under different condi-' tions.
  • each filter plate 1 is mounted for shifting by suitable means, such as by rollers 17 and 17 mounted for rotation adjacent the upper ends of support brackets 22 and 22' carried by each plate 1.
  • the rollers 17 and 17 travel along stationary tracks 18 and 18 mounted above the filter plates 1, as shown.
  • Each filter plate 1 is provided with spaced apart actuating members 3, 3' which are movable about a common shaft 2 which is supported by brackets 22, 22.
  • Mounted for pivotal movement about each shaft 2 between the actuating members 3 and 3 is an upstanding lever arm 4.
  • Each member 3 and 3 carries an extension in the form of a pawl 9.
  • the acutating members 3 and 3 and the lever arm 4 may be moved independently of each other a predetermined angular distance which is determined by the positions of two cams 5, 6 carried by and projecting from both sides of the lever arm 4 in position to engage the actuating members 3 and 3', as shown. Accordingly, after the lever arm 4 has passed through a short idle phase the cam 5 or 6, as the case may be, engages the members 3 and 3 thus moving them in either of two directions. Stops 7 and 8 mounted on the filter plates 1 limit angular movement of the members 3 and 3 and the lever arm 4 to determine their extreme positions. One of the extreme positions is the operative or locking position, as shown by the three plates 1 on the left side of FIG.
  • the actuating members 3 and 3' are in a neutral position with the pawls 9 disengaged from the toothed racks 10 and 10'.
  • the frontmost filter plate 1 of a stack is disengaged and shifted from left to right away from the other filter plates by one of several movable hook-like members 11 which are carried by suitable means, such as an endless chain 23 rotating in a vertical plane.
  • the hook-like members 11 of the lower flight of the chain move in position to engage the lever arms 4 and in the same direction in which the press is opened.
  • the hook-like members 11 of the return run or upper flight of the chain move out of reach of thelever arms 4.
  • Each hook-like member 11 is mounted for rotation about a pivot shaft 12 and has a catch member 13 adapted to engage lever arms 4 and also has a sloped cam portion 14. As indicated by dotted lines in FIG.
  • the lever arm 4 is provided with a surface 15 adapted for engagement with catch member 13. As shown in the position at the right side of FIG. 1, the surface 15 extends in the same vertical plane as the inner surface of the catch member 13. As soon as the lever arm 4 of the plate being shifted is released it contacts a stop pin 16 carried by the lever arm 4 of the preceding filter plate.
  • the lever arm 4 of the filter plate being shifted is thus turned counterclockwise so that cam 6 moves the actuating members 3 and 3' into operative locking position. Accordingly, the pawls 9 engage racks 10 and 10' so that the filter plates are relocked after having been pulled apart.
  • the components are so dimensioned that the hook-like member 11 will release-the lever arm 4 before the arm 4 contacts pin 16 of-the preceding lever arm 4 and is rotated counterclockwisethereby.
  • the arm 4 is thus released beforethe filter plate being shifted moves against the previously shifted stack of plates.
  • the filter plate being shifted is not moved by the hook-like member 11 but by its own inertia. Accordingly, the hook-like members 11 and the means for moving the same are not subjected to jerky or erratic movements and undue wear.
  • the hook-like members 11 are driven and guided by appropriate means such as the endless chain 23. With the filter plates being shifted along the tracks 18 and 18', the catch members 13 of the hook-like members 11 preferably extend horizontally in the same plane as the shafts 19 and 19' of the rollers 17 and 17'. Accordingly, the thrust of the hook-like members 11 does not exert undue forces on the filter plates. While the racks l0 and 10' require no movement at all they are preferably not stationary but are shiftable laterally so that they may be engaged by the pawls 9 or disengaged therefrom.
  • the pawls merely slide over the teeth of the racks l0 and 10'. That is, the racks 10 and 10' are shifted laterally by hydraulic cylinders 24 to avoid noises caused by the pawls 9 riding over the teeth of racks l0 and 10'. However, at the beginning of the opening of the plates the racks 10 and 10 are returned to operating position.
  • the driving and guiding means required for this purpose may be varied. For example, we show a separate drive means, such as a hydraulic cylinder 24, which moves the racks l0 and 10' to selected lateral positions relative to the pawls 9.
  • conventional drive means which is operatively connected to the press may be employed so that lateral movements of the toothed racks 10 and 10' is synchronized with the opening and closing movements of the filter press.
  • the pressure head or follower is moved back and simultaneously the racks 10 and 10' are brought into working position in which they lock the filter plates.
  • the filter plates are then shifted one by one to the right, as viewed in FIG. 1, by means of the hook-like members 11.
  • the pressure head or follower is returned to operating position in the usual manner and simultaneously the racks l0 and 10' are moved laterally and disengaged so that no noise is caused by the rack and pawl elements when the plates are pushed up against each other.
  • the follower and the means for actuating the same are of a conventional type, no further description thereof is deemed necessary.
  • the ratchet elements 10 and 10 are moved into operating position only at the beginning of the filter plate shifting phase.
  • the ratchet elements and 10 are moved to disengage the pawls and return to neutral position.
  • the control means for the power means which moves the ratchet elements 10 and 10' into engagement and disengagement with the pawls is operatively connected to the pressure head or follower of the filter press so that the control means is actuated at the end and beginning of each cycle, respectively. Accordingly, there will be no ratchet and pawl noises when the filter plates are pushed together at the beginning of each new filtration run. Also, our improved locking means may be disengaged at any time for such purposes as mounting, inspection or washing down of plates.
  • the ratchet elements of racks l0 and 10 are preferably toothed racks engaged by the pawls 9 of the plates 1, the toothed racks may be provided with one tooth for each pawl 9 spaced to suit the distance between plates, after expansion of the stack. However, the spacing of teeth may be wider or smaller so that the rack may be used for a wide range of cake and/or plate thickness.
  • each filter plate 1 with a plurality of pawls for cooperation with associated racks which are preferably arranged on either side of a vertical plane passing through the center of the filter press.
  • hook-like members carried by said drive member with each hook-like member being movable selectively to an upper inoperative position and a lower operative position
  • each hook-like member has a leading, sloped cam portion which precedes a catch element on said hook-like member so that upon contacting a preceding lever arm said cam portion moves said catch element out of engagement with the succeeding lever arm on a succeeding filter plate.
  • each filter plate is provided with a stop member in position to engage and actuate the actuating member of the succeeding filter plate as viewed in the direction in which the filter press is opened to force said actuating member into operative position.
  • each filter plate carries stop members in position to limit movement of said actuating member in opposite directions so that said actuating member is stopped in said operative position upon movement in one direction and is stopped in said inoperative position upon movement in the other direction.
  • Apparatus as defined in claim 1 in which a pair of laterally disposed actuating members are carried by each filter plate in position to cooperate with a pair of laterally disposed rack-like members mounted at opposite sides of a vertical plane passing through the center of the filter press.
  • shifting means is provided for shifting said rack-like member into operative position only when the pressure head of the filter press has been moved away from a stack of filter plates and pressure on the filter plates is released and means is provided for shifting said rack-like member to said inoperative position before the pressure 3,878,102 7 8 head of the filter press is returned to operating position.
  • ratchet member is moved to said operative position and 11
  • said said inoperative position at the end and at the beginshifting means is actuated by control means which is ning of each cycle, respectively. operatively connected to said pressure head so that said

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)
  • Pile Receivers (AREA)
  • Forming Counted Batches (AREA)
US405828A 1972-10-19 1973-10-12 Locking means for filter plates in a filter press Expired - Lifetime US3878102A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2251367A DE2251367C3 (de) 1972-10-19 1972-10-19 Vorrichtung zum Verriegeln der Filterplatten von Filterpressen und Verfahren zum Steuern des Filterzyklus

Publications (1)

Publication Number Publication Date
US3878102A true US3878102A (en) 1975-04-15

Family

ID=5859527

Family Applications (1)

Application Number Title Priority Date Filing Date
US405828A Expired - Lifetime US3878102A (en) 1972-10-19 1973-10-12 Locking means for filter plates in a filter press

Country Status (9)

Country Link
US (1) US3878102A (enExample)
JP (1) JPS5533922B2 (enExample)
AT (1) ATA870273A (enExample)
CH (1) CH563796A5 (enExample)
DE (1) DE2251367C3 (enExample)
FR (1) FR2203662A1 (enExample)
GB (1) GB1441316A (enExample)
IT (1) IT997954B (enExample)
ZA (1) ZA738110B (enExample)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4132647A (en) * 1977-07-14 1979-01-02 Ngk Insulators Ltd. Filter plate opening mechanism for filter presses
US4137167A (en) * 1976-01-23 1979-01-30 The Moseley Rubber Company Limited Removal of moisture from a sludge slurry or the like
US4179377A (en) * 1977-06-28 1979-12-18 Eberhard Hoesch & Sohne Gmbh & Co. Shifting device for a plate filter press
US4197199A (en) * 1977-10-25 1980-04-08 Manor Engineering Company Limited Filter presses
US4295970A (en) * 1979-06-13 1981-10-20 Rittershaus & Blecher Gmbh Filter conveying device for filter presses
US4597862A (en) * 1983-03-11 1986-07-01 Edwards & Jones Limited Filter press plate separation devices
US20080135468A1 (en) * 2006-12-11 2008-06-12 Pall Corporation Filtration assemblies and methods of installing filtration units in filtration assemblies
US20080135499A1 (en) * 2006-12-11 2008-06-12 Pall Corporation Filtration assemblies and methods of maintaining compression of filtration units in filtration assemblies
US20080135500A1 (en) * 2006-12-11 2008-06-12 Pall Corporation Filtration assemblies, filtration manifolds, filtration units, and methods of channeling permeate

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH656551A5 (de) * 1981-10-22 1986-07-15 Von Roll Ag Verschiebevorrichtung fuer filterplatten von filterpressen.
DE3204608A1 (de) * 1982-02-10 1983-08-18 Passavant-Werke AG & Co KG, 6209 Aarbergen Filterpresse mit aneinander verriegelten und einzeln nacheinander nach loesung der verriegelung verschiebbaren filterplatten
CH656550A5 (de) * 1982-08-10 1986-07-15 Von Roll Ag Filterpresse mit auf einer tragschiene verschiebbaren filterplatten.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3563386A (en) * 1970-03-06 1971-02-16 Kurita Machinery Manuf Apparatus for releasing and coupling filter plates in a filter press
US3598240A (en) * 1968-12-16 1971-08-10 Noritake Iron Works Filter press
US3624778A (en) * 1970-05-26 1971-11-30 Beloit Corp Filter press
US3754657A (en) * 1969-01-16 1973-08-28 J Harp Filter presses

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3598240A (en) * 1968-12-16 1971-08-10 Noritake Iron Works Filter press
US3754657A (en) * 1969-01-16 1973-08-28 J Harp Filter presses
US3563386A (en) * 1970-03-06 1971-02-16 Kurita Machinery Manuf Apparatus for releasing and coupling filter plates in a filter press
US3567027A (en) * 1970-03-06 1971-03-02 Kurita Machinery Manuf Apparatus for releasing and coupling filter plates in a filter press
US3624778A (en) * 1970-05-26 1971-11-30 Beloit Corp Filter press

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4137167A (en) * 1976-01-23 1979-01-30 The Moseley Rubber Company Limited Removal of moisture from a sludge slurry or the like
US4179377A (en) * 1977-06-28 1979-12-18 Eberhard Hoesch & Sohne Gmbh & Co. Shifting device for a plate filter press
US4132647A (en) * 1977-07-14 1979-01-02 Ngk Insulators Ltd. Filter plate opening mechanism for filter presses
US4197199A (en) * 1977-10-25 1980-04-08 Manor Engineering Company Limited Filter presses
US4295970A (en) * 1979-06-13 1981-10-20 Rittershaus & Blecher Gmbh Filter conveying device for filter presses
US4597862A (en) * 1983-03-11 1986-07-01 Edwards & Jones Limited Filter press plate separation devices
US20080135468A1 (en) * 2006-12-11 2008-06-12 Pall Corporation Filtration assemblies and methods of installing filtration units in filtration assemblies
US20080135499A1 (en) * 2006-12-11 2008-06-12 Pall Corporation Filtration assemblies and methods of maintaining compression of filtration units in filtration assemblies
US20080135500A1 (en) * 2006-12-11 2008-06-12 Pall Corporation Filtration assemblies, filtration manifolds, filtration units, and methods of channeling permeate
US7918999B2 (en) 2006-12-11 2011-04-05 Pall Corporation Filtration assemblies, filtration manifolds, filtration units, and methods of channeling permeate
US7976705B2 (en) 2006-12-11 2011-07-12 Pall Corporation Filtration assemblies and methods of installing filtration units in filtration assemblies

Also Published As

Publication number Publication date
DE2251367B2 (de) 1977-11-03
GB1441316A (en) 1976-06-30
DE2251367C3 (de) 1978-07-27
DE2251367A1 (de) 1974-05-02
JPS5533922B2 (enExample) 1980-09-03
JPS5052668A (enExample) 1975-05-10
CH563796A5 (enExample) 1975-07-15
IT997954B (it) 1975-12-30
ZA738110B (en) 1974-10-30
ATA870273A (de) 1976-09-15
FR2203662A1 (enExample) 1974-05-17

Similar Documents

Publication Publication Date Title
US3878102A (en) Locking means for filter plates in a filter press
US3306455A (en) Plate self-shifter for filter presses
DE2119414B2 (de) Auf einem Typenträgerwagen angeordnete Farbbandtransport- und Umschalteinrichtung, insbesondere für Mosaikdruckwerke
US3915863A (en) Apparatus for shifting, locking and unlocking filter plates in a pressure filter
DE2160363A1 (de) Magnetbandaufzeichnungs- und Wiedergabegerät mit einer gestapelten Reihe unabhängiger Kassetten
US3613312A (en) Railway car plug door structure
US4179377A (en) Shifting device for a plate filter press
US3951808A (en) Filter presses
GB2101003A (en) Filter press plate-separating mechanism
US829352A (en) Device for operating bulkhead-doors.
US1806866A (en) Device for adjustment of the
DE3222559A1 (de) Verschiebevorrichtung fuer filterplatten von filterpressen
DE2656321C2 (de) Eintourenkupplung für den Binderwellen- und Nadelantrieb einer Ballenpresse
US3882734A (en) Two-speed constant drive timer
PL61328B1 (enExample)
DE597727C (de) Elektrischer Weichenantrieb
DE49003C (de) Selbstthätige Ausrückvorrichtung an Aufzügen
US1669032A (en) Racking mechanism for knitting machines
US3017079A (en) Visual indicating device for cash registers
DE612606C (de) Selbstverkaeufer mit Zugstange fuer Zeitungen, Buecher und flach gepackte Waren
DE621159C (de) Schaltvorrichtung fuer das Ein- und Ausruecken von Kupplungen in Bueromaschinen
US1488064A (en) Braiding and lace-making machine
DE119659C (enExample)
DE392724C (de) Schachttuersteuerung fuer Bergwerksfoerderung
DE391471C (de) Buegelsaege