DE940287C - Rotary drum filter with a large number of narrow, axially parallel cells - Google Patents

Rotary drum filter with a large number of narrow, axially parallel cells

Info

Publication number
DE940287C
DE940287C DEW2750D DEW0002750D DE940287C DE 940287 C DE940287 C DE 940287C DE W2750 D DEW2750 D DE W2750D DE W0002750 D DEW0002750 D DE W0002750D DE 940287 C DE940287 C DE 940287C
Authority
DE
Germany
Prior art keywords
drum
filter
cavities
narrow
axially parallel
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
DEW2750D
Other languages
German (de)
Inventor
Johannes Wiebe
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.)
SELMA WIEBE
Original Assignee
SELMA WIEBE
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 SELMA WIEBE filed Critical SELMA WIEBE
Priority to DEW2750D priority Critical patent/DE940287C/en
Application granted granted Critical
Publication of DE940287C publication Critical patent/DE940287C/en
Expired legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D33/00Filters with filtering elements which move during the filtering operation
    • B01D33/44Regenerating 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
    • B01D33/466Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element scrapers
    • 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
    • B01D33/09Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward flow filtration with surface cells independently connected to pressure distributors

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)

Description

Die Erfindung bezieht sich. auf Trommeldrehfilter mit einer Vielzahl schmaler, achsparalleler Zellen am Trommelumfang, die über Verbindungsbohrungen wechselweise mit der Saugkammer der Filtertrommel und mit gegen die Saugkammer- und gegeneinander abgedichteten Hohlräumen zum Zuführen -von Blas- und Spülmitteln und zum Abführen besonderer Filtrate in Verbindung treten, wobei diese Hohlräume in ortsfesten, sektorförmigen Schleifkörpern untergebracht sind, die dichtend auf dem Innenmantel der Filtertrommel schleifen. The invention relates to. on rotary drum filters with a variety narrow, axially parallel cells on the drum circumference, which are connected via connecting bores alternately with the suction chamber of the filter drum and against the suction chamber and mutually sealed cavities for supplying blowing and rinsing agents and connect to discharge particular filtrates, these voids are housed in stationary, sector-shaped grinding tools that seal on grind the inner jacket of the filter drum.

Bei den bekannten Trommelfiltern dieser Art sind die achsparallelen Filterzellen über eine Vielzahl von über die gesamte Länge der Zellen verteilten Verbindungsbohrungen mit dem Trommelinneren verbunden. Dementsprechend muß sich der Schleifkörper nach dem Vorbild der bekannten zellenlosen Filter, deren Trommelmantel aus gelochtem Blech besteht, über die gesamte Trommellänge erstrecken. Es ergeben sich somit sehr große, schwere Schleifkörper mit sehr großen Dichtflächen, die eine sehr sorgfältige Bearbeitung der Filtertrommel an ihrem gesamten Innenmantel verlangen. Trotzdem ist es, besonders bei großen Filtertrommeln ausgeschlossen, eine befriedigende Abdichtung der Hohlräume im Schleifkörper gegen den Innenraum der Trommel zu erreichen, weil bei den großen Abmessungen des Schleifkörpers schon geringe Bearbeitungs- und Einbauungenauigkeiten das dichte Anliegen der großen Dichtungsfläche des Schleifkörpers am Innenmantel der Trommel verhindern. In the known drum filters of this type, the axially parallel ones Filter cells distributed over a multitude of over the entire length of the cells Connecting holes connected to the inside of the drum. Accordingly must be the abrasive body based on the model of the well-known cellless filter, its drum shell consists of perforated sheet metal, extend over the entire length of the drum. It surrendered thus very large, heavy abrasive bodies with very large sealing surfaces, which are a require very careful processing of the filter drum on its entire inner surface. Nevertheless, especially with large filter drums, it is a satisfactory one To achieve sealing of the cavities in the grinding wheel against the interior of the drum, because with the large dimensions of the grinding wheel, little machining and Installation inaccuracies the tight fit of the large sealing surface of the grinding wheel on the inside of the drum.

Gemäß der Erfindung sind die Verbindungsbohrungen in einer oder mehreren Querschnittebenen der Filtertrommel angeordnet, wobei jedem auf diese Weise im Trommelmantel gebildeten Lochkranz ein Schleifkörper mit Hohlräumen zugeordnet ist. According to the invention, the connecting bores are in one or more Arranged cross-sectional planes of the filter drum, each in this way in the drum shell formed perforated ring is assigned a grinding wheel with cavities.

Die Schleifkörper können hierbei kleine Abmessungen aufweisen, da sie anstatt der gesamten Trommelfänge ilur einen schmalen Lochkranz zu überdecken haben. Dementsprechend sind auch die Dichtflächen klein. An Stelle des gesamten Innenmantels der Trommel brauchen nur schmale Ringflächen im Bereich der Lochkränze bearbeitet zu werden. Die kleinen Schleifkörper können mit ge- -ringen Federkräften gegen die bearbeiteten Ringflächen der Filtertrommel gedrückt werden. Sie gewährleisten eine sichere Abdichtung ihrer Hohlräume gegen das Trommelinnere und üben nur eine geringe Bremswirkung auf die Trommel aus. The grinding bodies can have small dimensions because instead of covering the entire drum catch only a narrow perforated wreath to have. Accordingly, the sealing surfaces are also small. Instead of the whole The inner jacket of the drum only needs narrow ring surfaces in the area of the perforated rings to be edited. The small grinding wheels can work with slight spring forces be pressed against the machined ring surfaces of the filter drum. You guarantee a secure sealing of their cavities against the inside of the drum and only practice one low braking effect on the drum.

In der Zeichnung ist ein Ausführungsbeispiel des Erfindungsgegenstandes dargestellt, und zwar zeigt Abb. I die Filtertrommel mit den Schleifkörpern im Querschnitt, Abb. 2 einen Längsschnitt nach Linie A-A in Abb. I. The drawing shows an embodiment of the subject matter of the invention shown, namely Fig. I shows the filter drum with the grinding tools in cross section, Fig. 2 is a longitudinal section along line A-A in Fig. I.

Die Filtertrommel 1 ist an ihrem Umfang mit einer Vielzahl von schmalen und niedrigen Zellen 2 versehen, die durch das Filtergewebe in üblicher Weise bespannt sind. Die Zellen 2 haben über die in einer oder mehreren Querschnittebenen der Filtertrommel nebeneinanderliegenden Bohrungen 4 mit der Saugkammer 5 Verbindung. Jedem auf diese Weise gebildeten Lochkranz ist ein ortsfester, sektorförmiger Schleifkörper6a, 6b, 6c zugeordnet, der in einem an der nicht drehbaren Achse 7 der Filtertrommel 1 befestigten Stützkörper8 radial zur Trommel verschiebbar gelagert ist und durch Federn g gegen schmale Ringflächen amTrommelinnenmantel im Bereich der Lochkränze gedrückt wird. Die Schleifkörper bestehen aus elastischem Werkstoff, der sich dichtend an die Ringflächen der Trommel anlegt und weisen nach letzteren hin offene Hohlräume IOa Iob, I°c auf. Diese Hohlräume sind über durch die hohle Trommelachse 7 nach außen geführte Rohrleitungen I Iav I 1t 11c mit Druckluft-, Spülmittel- oder Unterdruckquellen verbunden, so daß diese Mittel in den durch die Schleifkörper 6 bestimmten Zonen den Zellen 2 über die Verbindungsbohrungen 4 zugeführt werden. Im Ausführungsbeispiel ist der in Abb. t oberste Hohlraum IOa mit einer Preßluftquelle verbunden, entsprechend seiner Aufgabe, den Filterkuchen im Bereich des Abnahmeschabers 12 vom Filtergewebe abzublasen. Der darunterliegende Hohlraum Iob ist an eine Spülflüssigkeitsquelle zum Spülen und Reinigen des Filtergewebes und der unterste Hohlraum Ioc schließlich mit einer Unterdruckquelle verbunden, um das in seiner Zone noch sehr unreine Filtrat getrennt von dem später gewonnenen abzuziehen. The filter drum 1 is on its periphery with a large number of narrow and low cells 2 provided, which are covered by the filter fabric in the usual way are. The cells 2 have one or more cross-sectional planes of the filter drum adjacent holes 4 with the suction chamber 5 connection. Everyone on this A perforated ring formed in this way is a stationary, sector-shaped grinding element6a, 6b, 6c associated with the one attached to the non-rotatable axis 7 of the filter drum 1 Support body8 is mounted so that it can be displaced radially to the drum and is counteracted by springs g narrow ring surfaces on the inner drum jacket in the area of the perforated rings. The grinding wheels are made of elastic material that seals against the ring surfaces the drum and have open cavities IOa Iob, I ° c towards the latter. These cavities are via pipelines led to the outside through the hollow drum axis 7 I Iav I 1t 11c connected to compressed air, detergent or vacuum sources, see above that these means in the zones determined by the grinding wheel 6 the cells 2 are supplied via the connecting bores 4. In the exemplary embodiment is the in Fig. t uppermost cavity IOa connected to a source of compressed air, accordingly its task, the filter cake in the area of the scraper 12 from the filter fabric blow off. The underlying cavity Iob is connected to a source of irrigation fluid for rinsing and cleaning the filter fabric and finally the lowest cavity Ioc connected to a source of negative pressure to remove the filtrate, which is still very impure in its zone to be deducted separately from what was won later.

Claims (1)

PATENTANSPRUCH: Trommelfilter mit einer Vielzahl- - schmaler, achsparalleler Zellen, die -über Verbindungsbohrungen wechselweise mit der Saugkammer der Filtertrommel und mit gegen die Saugkammer und gegeneinander abgedichteten Hohlräumen zum Zuführen von Blas- und Spülmitteln und zum Abführen besonderer Filtrate in Verbindung treten, wobei diese Hohlräume -in ortsfesten sektorförmigen Schleifkörpern untergebracht sind, die dichtend auf dem Innenmantel der Filtertrommel schleifen, dadurch gekennzeichnet, daß die Verbindungsbohrungen (4) in einer oder mehreren Querschnittsebenen der Filtertrommel (i) angeordnet sind und daß jedem auf diese Weise im Trommelmantel gebildeten Lochkranz (4) ein Schleifkörper (6a, 6b, 6c) mit Hohlräumen (IOaß Iob, Ioc) zugeordnet ist. PATENT CLAIM: Drum filter with a multitude of - narrower, axially parallel Cells that alternate with the suction chamber of the filter drum via connecting bores and with cavities for feeding which are sealed against the suction chamber and against each other of blowing and rinsing agents and to remove special filtrates, these cavities housed in stationary sector-shaped grinding tools which grind sealingly on the inner jacket of the filter drum, characterized in that that the connecting bores (4) in one or more cross-sectional planes of the filter drum (i) are arranged and that each perforated ring formed in this way in the drum shell (4) a grinding body (6a, 6b, 6c) with cavities (IOass Iob, Ioc) is assigned. Angezogene Druckschriften: USA.-Patentschrift Nr. 1 627 882; Werbeschrift »Zellenlose Trommel-Vakuumfilter« der Firma Schmidt, Kranz & Co. Cited references: U.S. Patent No. 1,627,882; Advertising leaflet "Cellless drum vacuum filters" from Schmidt, Kranz & Co.
DEW2750D 1937-03-10 1937-03-10 Rotary drum filter with a large number of narrow, axially parallel cells Expired DE940287C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEW2750D DE940287C (en) 1937-03-10 1937-03-10 Rotary drum filter with a large number of narrow, axially parallel cells

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW2750D DE940287C (en) 1937-03-10 1937-03-10 Rotary drum filter with a large number of narrow, axially parallel cells

Publications (1)

Publication Number Publication Date
DE940287C true DE940287C (en) 1956-03-15

Family

ID=7591739

Family Applications (1)

Application Number Title Priority Date Filing Date
DEW2750D Expired DE940287C (en) 1937-03-10 1937-03-10 Rotary drum filter with a large number of narrow, axially parallel cells

Country Status (1)

Country Link
DE (1) DE940287C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1177614B (en) * 1955-09-12 1964-09-10 Hans Jung Closed cylindrical rotary pressure filter
DE2924901A1 (en) * 1978-06-23 1980-01-10 Danske Sukkerfab CIRCULAR DRUM OR PLATE FILTER

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1627882A (en) * 1923-04-07 1927-05-10 Beloit Iron Works Paper-making machine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1627882A (en) * 1923-04-07 1927-05-10 Beloit Iron Works Paper-making machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1177614B (en) * 1955-09-12 1964-09-10 Hans Jung Closed cylindrical rotary pressure filter
DE2924901A1 (en) * 1978-06-23 1980-01-10 Danske Sukkerfab CIRCULAR DRUM OR PLATE FILTER

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