DE975645C - Process for washing out and vacuuming or pressing dry and for avoiding cracks in the filter cake on rotary filters - Google Patents

Process for washing out and vacuuming or pressing dry and for avoiding cracks in the filter cake on rotary filters

Info

Publication number
DE975645C
DE975645C DEM1202D DEM0001202D DE975645C DE 975645 C DE975645 C DE 975645C DE M1202 D DEM1202 D DE M1202D DE M0001202 D DEM0001202 D DE M0001202D DE 975645 C DE975645 C DE 975645C
Authority
DE
Germany
Prior art keywords
filter cake
vacuuming
washing out
rotary filters
pressing dry
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
DEM1202D
Other languages
German (de)
Inventor
Gustav Dipl-Ing Netzel
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.)
Imperial Maschf GmbH
Original Assignee
Imperial Maschf GmbH
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 Imperial Maschf GmbH filed Critical Imperial Maschf GmbH
Priority to DEM1202D priority Critical patent/DE975645C/en
Application granted granted Critical
Publication of DE975645C publication Critical patent/DE975645C/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/20—Vibrating the filters
    • 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
    • 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
    • B01D33/52—Regenerating the filter material in the filter by forces created by movement of the filter element
    • B01D33/54—Regenerating the filter material in the filter by forces created by movement of the filter element involving vibrations

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)

Description

Verfahren zum Auswaschen und Trockensaugen oder -drücken sowie zur Vermeidung von Rißbildungen im Filterkuchen auf Drehfiltern Das deutsche Patent 975 334 betrifft ein Verfahren zum Filtrieren von Flüssigkeitsschlämmen auf Filtern, die unter gleichbleibendem oder schwankendem Drücken filtriert, trockengesaugt oder ausgewaschen und trockengesaugt werden, und beschreibt Maßnahmen, die zur Erhöhung des Trockengehalts im Filterkuchen dienen. Es sieht zunächst die Aufgabe verhältnismäßig geringer Flüssigkeitsmengen während des Trockensauge-oder -drückvorganges vor. Es stellt ferner ein Verfahren unter Schutz, bei dem mit oder ohne Aufgabe verhältnismäßig geringer Flüssigkeitsmengen Druckschwankungen auf den Filterkuchen einwirken. Process for washing out and dry vacuuming or pressing as well as for Avoidance of cracks in the filter cake on rotary filters The German patent 975 334 relates to a method for filtering liquid sludge on filters, which are filtered, sucked dry or under constant or fluctuating pressures can be washed out and vacuumed dry, and describes measures that can be taken to increase of the dry content in the filter cake. It initially sees the task proportionately small amounts of liquid during the dry vacuuming or pressing process. It furthermore puts a procedure under protection, in which with or without a task proportionate small amounts of liquid, pressure fluctuations act on the filter cake.

Es hat sich nun herausgestellt, daß sich der Feststoffanteil im Filterkuchen wesentlich erhöhen läßt, wenn der Filterkuchen während des Trockensauge-oder -drückvorganges Erschütterungen unterworfen wird. It has now been found that the solids content in the filter cake Can be increased significantly if the filter cake during the dry suction or drying process Is subjected to vibrations.

Die Erschütterungen können in an sich bekannter Weise durch Klopfvorrichtungen oder durch andere in Vibration versetzte Mittel erzeugt und angewandt werden. Sie bewirken, daß der Rauminhalt des Filterkuchens auf das praktisch erreichbare kleinste Maß vermindert wird. Hierdurch werden die Hohlräume im Filterkuchen weiter verkleinert und damit gleichzeitig auch die Menge der anhaftenden Flüssigkeit. The vibrations can be caused in a manner known per se by knocking devices or generated and applied by other vibrated means. she cause the volume of the filter cake to be as small as practically achievable Degree is reduced. This further reduces the cavities in the filter cake and at the same time also the amount of adhering liquid.

Claims (1)

PATENTANSPRUCH: Verfahren zum Auswaschen und Trockensaugen oder -drücken sowie zur Vermeidung von Rißbildungen im Filterkuchen auf Drehfiltern, dadurch gekennzeidmet, daß der Filterkuchen Erschütterungen unterworfen wird bzw. PATENT CLAIM: Process for washing and dry vacuuming or pressing as well as to avoid cracks in the filter cake on rotary filters, thus marked, that the filter cake is subjected to vibrations or Erschütterungen auf den Filterkuchen zur Einwirkung gebracht werden. Vibrations are brought to the effect of the filter cake.
DEM1202D 1941-03-23 1941-03-23 Process for washing out and vacuuming or pressing dry and for avoiding cracks in the filter cake on rotary filters Expired DE975645C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEM1202D DE975645C (en) 1941-03-23 1941-03-23 Process for washing out and vacuuming or pressing dry and for avoiding cracks in the filter cake on rotary filters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM1202D DE975645C (en) 1941-03-23 1941-03-23 Process for washing out and vacuuming or pressing dry and for avoiding cracks in the filter cake on rotary filters

Publications (1)

Publication Number Publication Date
DE975645C true DE975645C (en) 1962-03-29

Family

ID=7291098

Family Applications (1)

Application Number Title Priority Date Filing Date
DEM1202D Expired DE975645C (en) 1941-03-23 1941-03-23 Process for washing out and vacuuming or pressing dry and for avoiding cracks in the filter cake on rotary filters

Country Status (1)

Country Link
DE (1) DE975645C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4422503A1 (en) * 1994-06-28 1996-01-04 Kloeckner Humboldt Deutz Ag Sepn. of solids, e.g. coal particles, from fluid suspension

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4422503A1 (en) * 1994-06-28 1996-01-04 Kloeckner Humboldt Deutz Ag Sepn. of solids, e.g. coal particles, from fluid suspension

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