DE621111C - Drum filter with forcibly driven pressure rollers - Google Patents

Drum filter with forcibly driven pressure rollers

Info

Publication number
DE621111C
DE621111C DEH129050D DEH0129050D DE621111C DE 621111 C DE621111 C DE 621111C DE H129050 D DEH129050 D DE H129050D DE H0129050 D DEH0129050 D DE H0129050D DE 621111 C DE621111 C DE 621111C
Authority
DE
Germany
Prior art keywords
drum
pressure rollers
filter
driven pressure
rollers
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
DEH129050D
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.)
Humboldt Deutzmotoren AG
Original Assignee
Humboldt Deutzmotoren AG
Publication date
Priority to DEH129050D priority Critical patent/DE621111C/en
Application granted granted Critical
Publication of DE621111C publication Critical patent/DE621111C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/06—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums
    • B01D33/073—Filters with filtering elements which move during the filtering operation with rotary cylindrical filtering surfaces, e.g. hollow drums arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/58—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element
    • B01D33/62—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying
    • B01D33/64—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by compression
    • B01D33/646—Handling the filter cake in the filter for purposes other than for regenerating the filter cake remaining on the filtering element for drying by compression by pressure rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/28—Position of the filtering element
    • B01D2201/282—Filtering elements with a horizontal rotation or symmetry axis

Landscapes

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

Description

Trommelfilter mit zwangsläufig angetriebenen Druckwalzen Es ist bereits vorgeschlagen worden, bei Trommeldrehfiltern an der Trommel Walzen anzuordnen, die auf den eben entstandenen Filterkuchen drücken und diesen glätten.Drum filter with inevitably driven pressure rollers It is already have been proposed to arrange rollers on the drum in rotary drum filters, the Press on the filter cake that has just been created and smooth it out.

Diese Walzen sind zwangsläufig angetrieben und drehen sich entgegengesetzt zur Trommeidrehrichtung, so daß die Umfangsgeschwindigkeiten der Walzen und der Trommel gleich sind. Versuche haben gezeigt, daß bei diesen Einrichtungen sehr häufig der überstand auftritt, daß Teile des Filterkuchens anoden Walzen. hängenbleiben und-Risse und Löcher im Filterkuchen entstehen, durch die in unerwünschter Weise Luft im Überschuß angesaugt wird.These rollers are inevitably driven and rotate in opposite directions to the direction of rotation of the drum, so that the peripheral speeds of the rollers and the Drum are the same. Experiments have shown that this is very common at these facilities the supernatant occurs that parts of the filter cake roll anode. get stuck and -cracks and holes in the filter cake arise through which in an undesirable manner Air is sucked in excess.

Erfindungsgemäß werden diese Nachteile dadurch behoben, daß die Druckwalzen im Vergleich zur Filtertrommel im gleichen Drehsinn, aber mit größerer Umfangsgeschwindigkeit umlaufen und eine gerauhte Oberfläche aufweisen. Bei dieser Anordnung iibt die Oberfläche der Druckwalze an ihrer Berührungsstelle mit dem Kuchen auf der Filtertrommel infolge der größeren Umfangs--geschwindigkeit eine gleitende Bewegung auf den Kuchen aus. Infolgedessen findet der Kuchen keine Zeit, auf der Walzenoberfläche festzukleben oder sich festzusetzen. Die Druckwalzenoberfiäche bleibt mithin frei von Filterrückständen, während der von ihr bestrichene Filterkuchen durch die Riffelung der Druckwalze an seiner Oberfläche leicht aufgerauht wird. According to the invention, these disadvantages are eliminated in that the pressure rollers in comparison to the filter drum in the same direction of rotation, but with a higher peripheral speed and have a roughened surface. With this arrangement the surface remains the pressure roller at its point of contact with the cake on the filter drum as a result the greater circumferential speed produces a sliding movement on the cake. As a result, the cake does not find time to stick to the roller surface or to get stuck. The pressure roller surface therefore remains free of filter residues, while the filter cake coated by it through the corrugation of the pressure roller is slightly roughened on its surface.

Die Zeichnung gibt ein Ausführungsbeispiel der Erfindung wieder. Auf der Filtertrommel a sind drei Walzen b angeordnet, die nachgiebig gelagert und mit Hilfe von Gewichten c gegen die Trommel angepreßt werden. Die Walzen haben dabei den gleichen Drehsinn, aber eine größere Umfangsgeschwindigkeit als die Filtertrommel. Ferner ist die Oberfläche der Walzen gerauht. Anstatt durch Gewichtsdruck können die Walzen auch durch Federkraft nachgiebig gegen den Filterkuchen angepreßt werden. The drawing shows an embodiment of the invention. On the filter drum a three rollers b are arranged, which are resiliently mounted and be pressed against the drum with the aid of weights c. Have the rollers with you the same direction of rotation, but a higher peripheral speed than the filter drum. Furthermore, the surface of the rollers is roughened. Instead of using weight pressure you can the rollers are also pressed resiliently against the filter cake by spring force.

Claims (1)

P A T E N T A N S P R U C H : Trommelfilter mit zwangsläufig angetriebenen Druckwalzen zum Zustreichen der in der Filterkuchenschicht sich bildenden Risse, dadurch gekennzeichnet, daß die Druckwalzen im Vergleich zur Filtertrommel im gleichen Drehsinn, aber mit größerer Umfangsgeschwinditgkeit umlaufen und eine gerauhte Oberfläche aufweisen. P A T E N T A N S P R U C H: Drum filter with positively driven Pressure rollers for covering the cracks that form in the filter cake layer, characterized in that the pressure rollers in comparison to the filter drum in the same Sense of rotation, but revolve with greater peripheral speed and a roughened surface exhibit.
DEH129050D Drum filter with forcibly driven pressure rollers Expired DE621111C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH129050D DE621111C (en) Drum filter with forcibly driven pressure rollers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH129050D DE621111C (en) Drum filter with forcibly driven pressure rollers

Publications (1)

Publication Number Publication Date
DE621111C true DE621111C (en) 1935-11-04

Family

ID=7175775

Family Applications (1)

Application Number Title Priority Date Filing Date
DEH129050D Expired DE621111C (en) Drum filter with forcibly driven pressure rollers

Country Status (1)

Country Link
DE (1) DE621111C (en)

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