DE676189C - Device for removing the filter cake from rotary cell filters - Google Patents

Device for removing the filter cake from rotary cell filters

Info

Publication number
DE676189C
DE676189C DEW96865D DEW0096865D DE676189C DE 676189 C DE676189 C DE 676189C DE W96865 D DEW96865 D DE W96865D DE W0096865 D DEW0096865 D DE W0096865D DE 676189 C DE676189 C DE 676189C
Authority
DE
Germany
Prior art keywords
roller
cake
take
filter cake
filter
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
DEW96865D
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
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
Priority claimed from DEW95769D external-priority patent/DE671703C/en
Application filed by Individual filed Critical Individual
Priority to DEW96865D priority Critical patent/DE676189C/en
Application granted granted Critical
Publication of DE676189C publication Critical patent/DE676189C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D33/00Filters with filtering elements which move during the filtering operation
    • B01D33/06Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/073Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward flow filtration
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D33/00Filters with filtering elements which move during the filtering operation
    • B01D33/44Regenerating the filter material in the filter
    • B01D33/46Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
    • B01D33/465Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element take-off rollers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2201/00Details relating to filtering apparatus
    • B01D2201/28Position of the filtering element
    • B01D2201/282Filtering elements with a horizontal rotation or symmetry axis

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Treatment Of Sludge (AREA)

Description

Vorrichtung zur Abnahme des Filterkuchens von Zellendrehfiltern Gegenstand der Erfindung ist eine weitere Ausbildung der Abnahmewalze nach Patent 671 703 in Gestalteiner Zus.atzeinrichtjung, die aus mehreren schmalen Streifenschabern besteht, die dazu dienen, den Filterkuchen in Streifen ,aus dem ,auf der Oberfläche :der Abnahmewalze befindlichen Kuchenmantel herauszuschneiden. Bei Benutzung der Abnahmewalze mit der Gegenwalze nach dem Hauptpatent häuft sich die vom Filter abgenommene Kuchenmenge an der Berührungsstelle lt zwischen den Walzen b und c .an, bis sie in größeren Klumpen abfällt. Ist jedoch die ,anfallende Kuchenmenge gering; dann trocknet der Kuchen ,allmählich durch die Berührung mit der dampfbeheizten Walzsee, .er wird hart, und das Drehmoment für den Antrieb wird erheblich vergrößert. Das Abfallen wird weiterhin noch erschwert, wenn .aus baulichen Gründen die Gegenwalze c oberhalb .der Abnahmewalze b. liegt.Device for removing the filter cake from rotary cell filters The subject of the invention is a further design of the removal roller according to patent 671 703 in the form of an additional device consisting of several narrow strip scrapers which serve to cut the filter cake into strips from which, on the surface: the Cut out the cake casing located on the take-off roller. When using the take-off roller with the counter-roller according to the main patent, the amount of cake removed by the filter piles up at the point of contact between rollers b and c until it falls off in larger lumps. However, if the amount of cake is small; then the cake dries, gradually as it comes into contact with the steam-heated rolling sea, it becomes hard, and the torque for the drive is considerably increased. The fall is made even more difficult if. For structural reasons, the counter roll c above .the take-off roll b. lies.

Um diesem Umstand Rechnung zu tragest, hat es sich als zweckmäßig erwiesen, bei gewissem Filtergut eine zu große Ansammlung von Filterkuchen zwischen den Walzen b und c zu verhindern. Das wird erreicht durch die Streifenschaber. Die Vorrichtung gemäß der Erfindung zeigt die Abb. t im Querschnitt und die Abb. a in Seitenansicht.In order to take this fact into account, it has proven to be useful proved, with certain filter material, an excessive accumulation of filter cakes between to prevent rollers b and c. This is achieved with the strip scraper. the Device according to the invention shows the Fig. T in cross section and Fig. A in Side view.

Die Vorrichtung besteht aus mehreren schmalen Schabern i, die aus dem Kuchenmantel auf der Abnahmewalze b Streifen herausschneiden. Die dadurch entstehenden Nuten im Kuchenmantel werden durch die Gegenwalze c teilweise oder ganz wieder mit Kuchen gefüllt.The device consists of several narrow scrapers i, which are made of Cut out strips from the cake jacket on the take-off roller b. The resulting Grooves in the cake shell are partially or completely restored by the counter roller c Cake filled.

Für die Betriebsfälle, in denen die von der Filterfläche rx abzuhebende Kuchenmenge d während des Betriebes wechselt, so daß die Kuchenansammlung zwischen den Walzen b und c verschieden groß ist, sieht die Erfindung vor, einzelne Schaber, etwa jeden dritten, oder auch sämtliche Schaber mittels Naben o drehbar auf der Tragspindel h zu lagern und die Naben mit einem Steuierarm L zu versehen, der auf dem Kuchenwulst im Sammelraum m zwischen den Walzen b und c schleift. Bei Vergrößcrung des Kuchenwulstes wird der Steuerarm L von der Abnahmewalze b entfernt. Dadurch wird das Schabermesser i der Walze b genähert -und schneidet einen dickeren Streifen aus der Kuchenschicht auf der Walze b heraus. Durch die Mehrabnahme von Kuchen vermindert sich dann der Kuchenwulst. Die Einrichtung arbeitet selbsttätig, so daß Schwankungen in der Menge des von der Filterfläche abgenommenen Kuchens ausgeglichen werden. Die Streifenschaber können auch in Verbindung mit der Abnahmewalze b' ohne die- Gegenwalze c verwendet werden, und zwar dann, wenn der Filterkuchen verhältnismäßig weich und von gleicher Korngröße ist. Unter diesen Bedingungen genügt der Druck der Abnahmewalze b geben die Filtertrommel a, um den Filterkuchen .auf der Abnahmewalze b derart zu verschieben, daß sich der Kuchen .auch in den Vertiefungen -und unter der Bespannung der Walze b erneuert.For those operating cases in which the amount of cake d to be lifted off the filter surface rx changes during operation, so that the cake accumulation between the rollers b and c is of different sizes, the invention provides individual scrapers, e.g. every third scraper, or all scrapers by means of To store the hubs o rotatably on the support spindle h and to provide the hubs with a control arm L, which grinds on the cake bead in the collecting space m between the rollers b and c. When the cake bead is enlarged, the control arm L is removed from the take-off roller b. This brings the doctor blade i closer to the roller b and cuts a thicker strip out of the cake layer on the roller b. The cake bulge is then reduced as the cake increases. The device operates automatically, so that fluctuations are compensated for in the amount of removed by de r filter cake surface. The strip scrapers can also be used in conjunction with the take-off roller b 'without the counter roller c, namely when the filter cake is relatively soft and of the same grain size. Under these conditions the pressure of the take-off roller b is sufficient to give the filter drum a to move the filter cake on the take-off roller b in such a way that the cake is renewed in the depressions and under the covering of the roller b.

Diese Einrichtung ohne Gegenwalze zeigt die Abb. 3 im Querschnitt und die Abb.4 in der Seitenansicht.This device without a counter roll is shown in Fig. 3 in cross section and Fig.4 in side view.

Bei dieser Ausführungsform entstehen auf der Oberfläche der Abnahmew .alte b, die mit Schnüren, Bändern oder einem netzartigen Geflecht bespannt sein kann, Filterkuchenringe, die sich je nach dem Auflagedruck und der Unebenheit der Filterfläche bei der Berührung mit der Trommelfilterfläche mehr oder weniger zusammendrücken.In this embodiment, on the surface of the acceptance w .old b, which are covered with cords, ribbons or a net-like braid can, filter cake rings that vary depending on the contact pressure and the unevenness of the Compress the filter surface more or less when it comes into contact with the drum filter surface.

Claims (1)

PATENT ANSPRÜCIIE: i. Vorrichtung zur Abnahme des Filterkuchens von Zellendrehfiltern nach Patent 671 7o3, dadurch gekennzeichnet, daß auf der mit oder ohne Gegenwalze (c) arbeitenden Abnahmewalzie (b) eine Änzahl schmaler Schaber (i) derart angeordnet ist, däß Streifen aus dem auf der Abnahmewalze (b) haftenden Filterkuchen herausgeschnitten werden. z. Vorrichtung nach Anspruch I, dadurch gekennzeichnet, daß sämtliche oder ein Teil der Streifenschaber (i) mittels Naben (o) auf einer Tragspindel (k) drehbar angeordnet sind und an den Naben (o) jeweils ein Steuerarm (L) vorgesehen ist, der sich bis in den Kuchensammelraum (m) zwischen der Abnahmewalze (b) und der Gegenwalze (c) bzw. zwischen der Abnahmewalze (b) -und der Filtertrommel (a) erstreckt.PATENT CLAIM: i. Device for removing the filter cake from rotary cell filters according to patent 671 703, characterized in that a number of narrow scrapers (i) are arranged on the take-off roller (b), which works with or without counter roller (c), in such a way that strips from the take-off roller (b ) adhering filter cake can be cut out. z. Device according to claim I, characterized in that all or some of the strip scrapers (i) are rotatably arranged on a support spindle (k) by means of hubs (o) and a control arm (L) is provided on each of the hubs (o), which is extends into the cake collecting space (m) between the take-off roller (b) and the counter-roller (c) or between the take-off roller (b) and the filter drum (a).
DEW96865D 1934-08-29 1935-07-11 Device for removing the filter cake from rotary cell filters Expired DE676189C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEW96865D DE676189C (en) 1934-08-29 1935-07-11 Device for removing the filter cake from rotary cell filters

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEW95769D DE671703C (en) 1934-08-29 1934-08-29 Device for removing the filter cake from rotary cell filters
DEW96865D DE676189C (en) 1934-08-29 1935-07-11 Device for removing the filter cake from rotary cell filters

Publications (1)

Publication Number Publication Date
DE676189C true DE676189C (en) 1939-05-27

Family

ID=26003228

Family Applications (1)

Application Number Title Priority Date Filing Date
DEW96865D Expired DE676189C (en) 1934-08-29 1935-07-11 Device for removing the filter cake from rotary cell filters

Country Status (1)

Country Link
DE (1) DE676189C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE920009C (en) * 1939-06-03 1954-11-11 Gustav Netzel Dipl Ing Method and device for removing the filter cake from rotary filters
DE974691C (en) * 1953-06-11 1961-03-30 Buckau Wolf Maschf R Device for removing the filter cake from rotary filters

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE920009C (en) * 1939-06-03 1954-11-11 Gustav Netzel Dipl Ing Method and device for removing the filter cake from rotary filters
DE974691C (en) * 1953-06-11 1961-03-30 Buckau Wolf Maschf R Device for removing the filter cake from rotary filters

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