DE646993C - Device for removing the filter cake from rotary pressure cell drum filters - Google Patents

Device for removing the filter cake from rotary pressure cell drum filters

Info

Publication number
DE646993C
DE646993C DEW95420D DEW0095420D DE646993C DE 646993 C DE646993 C DE 646993C DE W95420 D DEW95420 D DE W95420D DE W0095420 D DEW0095420 D DE W0095420D DE 646993 C DE646993 C DE 646993C
Authority
DE
Germany
Prior art keywords
pressure cell
filter cake
rotary pressure
drum filters
cell drum
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
DEW95420D
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.)
JOH WIEBE
Original Assignee
JOH WIEBE
Publication date
Priority to DEW95420D priority Critical patent/DE646993C/en
Application granted granted Critical
Publication of DE646993C publication Critical patent/DE646993C/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
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/46—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element
    • 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

Description

Vorrichtung zur Abnahme des Filterkuchens von Druckzellentrommeldrehfiltern Zusatz zum Patent 6I3 347 Gegenstand der Erfindung ist die Verwendung des Ahnahmebandes nach Patent 643 347 für Druckzellentrommeldrehfilter.Device for removing the filter cake from rotary pressure cell drum filters Addition to patent 6I3 347 The subject of the invention is the use of the Ahnahmebandes according to patent 643 347 for rotary pressure cell drum filters.

In verschiedenen Industriezweigen, insbesondere der chemischen und keramischen Industrie werden zur Zeit sdiwer flitrierbare Suspensionen noch mittels Kammerfilterpressen entwässert. Die Forderung dieser Industrien nach ununterbrochen arbeitenden Enavässerungseinrichtungen ist bekannt. Mit Saugzellendrehfiltern kann diese Forderung nicht erfüllt werden, da diese Drehfilter bei schwer filtrierbaren Flüssigkeiten oder Schlämmen versagen. Auch wird mit diesen Filtervorrichtungen die erforderliche Entwässerung nicht erreicht. Zwar sind Druckzellendrehfilter bereits bekannt, aber die Abnahme des Filterkuchens bei diesen bekannten Vorrichtungen war bisher schwierig und nicht gesichert. In various industries, especially the chemical and In the ceramic industry, suspensions that can be filtered easily are still made by means of Chamber filter presses drained. The demand of these industries for uninterrupted working Enavasserungseinrichtung is known. With rotary suction cell filters this requirement cannot be met because these rotary filters are difficult to filter Liquids or slurries fail. Also with these filter devices the required drainage is not achieved. Rotary pressure cell filters are already there known, but the decrease in the filter cake in these known devices was difficult and unsecured so far.

Diese Aufgabe wird erfindungsgemäß gelöst durch die Verwendung des Abnahmebandes nach Patent 613 347 bei Druckzellentrommeldrehfiltern. Das Abnahmeband ist auch hier, wie bei der Vorrichtung gemäß Hauptpatent, über Walzen geführt. Der Lauf des Bandes kann selbsttätig geregelt werden, so daß der Kuchen laufend oder mit Unterbrechungen von dem Band entfernt wird; außerdem sind besondere Fördervorrichtungen vorgesehen, um den Kuchen aus dem Druckgehäuse des Trommeldrehfilters zu entfernen. This object is achieved according to the invention by using the Removal tape according to patent 613 347 for rotary pressure cell drum filters. The acceptance tape is also here, as with the device according to the main patent, guided over rollers. Of the The run of the belt can be regulated automatically, so that the cake is running or is intermittently removed from the tape; there are also special conveying devices provided to remove the cake from the pressure housing of the rotary drum filter.

Zur Unterstützung der Abnahme des Kuchens ist es bei Druckzellendrehfiltern zweckmäßig, Preßluft von etwas höherem Druck als dem der in das Druckgehäuse eingeführten Preßluft in die Zelle einzublasen, von deren Filterfläche der Kuchen abgenommen wird, wobei diese Preßluft alsdann durch das Filtertuch hindurch in den Druckraum übertritt. Notwendig ist es hierbei, daß die Flüssigkeit (Waschlauge oder Filtrat) aus der Zelle vorher möglichst restlos entfernt wird, damit der Kuchen nicht wieder angefeuchtet wird. Bei luftdurchlässigen Filterkuchen und bei Verwendung eines luftdurchlässigen Abnahmebandes wird die Zelle an der Abnahmestelle stets entwässert sein. Bei luftundurchlässigem Kuchen muß jedoch die Zelle besonders von innen mit Preßluft beaufschlagt werden, damit die Feuchtigkeit herausgeblasen wird. It is used with rotary pressure cell filters to aid in the removal of the cake expedient, compressed air of a slightly higher pressure than that introduced into the pressure housing To blow compressed air into the cell, removed from the filter surface of the cake is, this compressed air then through the filter cloth into the pressure chamber transgresses. It is necessary here that the liquid (washing liquor or filtrate) is removed from the cell as completely as possible beforehand so that the cake does not come back is moistened. With air-permeable filter cake and when using an air-permeable one With the removal tape, the cell at the delivery point will always be drained. With air impermeable Cake, however, must be pressurized with compressed air, especially from the inside, so that the moisture is blown out.

Den Gegenstand der Erfindung, nämlich den Einbau des endlosen Filterkuchenabnahmebandes nach Patent 613 347 in ein Druckzellentrommeldrehfilter, zeigt die Abbildung. The object of the invention, namely the installation of the endless filter cake removal belt according to patent 613 347 in a pressure cell rotary filter, the figure shows.

Claims (1)

PATENTANSPRUCH : Die Verwendung des durch Patent 613 347 geschützten, mit Erhebungen und Vertiefungen auf der Kuchenseite versehenen Filterkuchenabnahmebandes für Druckzellentrommeldrehfilter. PATENT CLAIM: The use of the patent 613 347 protected, filter cake removal belt provided with elevations and depressions on the cake side for rotary pressure cell filters.
DEW95420D Device for removing the filter cake from rotary pressure cell drum filters Expired DE646993C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEW95420D DE646993C (en) Device for removing the filter cake from rotary pressure cell drum filters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEW95420D DE646993C (en) Device for removing the filter cake from rotary pressure cell drum filters

Publications (1)

Publication Number Publication Date
DE646993C true DE646993C (en) 1937-06-25

Family

ID=7614337

Family Applications (1)

Application Number Title Priority Date Filing Date
DEW95420D Expired DE646993C (en) Device for removing the filter cake from rotary pressure cell drum filters

Country Status (1)

Country Link
DE (1) DE646993C (en)

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