DE4040431A1 - Removal of filter cake e.g. flotation sludge - from a continuously rotating filter drum using scraper made of one or more pieces of wire rotating around axis parallel to filter - Google Patents
Removal of filter cake e.g. flotation sludge - from a continuously rotating filter drum using scraper made of one or more pieces of wire rotating around axis parallel to filterInfo
- Publication number
- DE4040431A1 DE4040431A1 DE4040431A DE4040431A DE4040431A1 DE 4040431 A1 DE4040431 A1 DE 4040431A1 DE 4040431 A DE4040431 A DE 4040431A DE 4040431 A DE4040431 A DE 4040431A DE 4040431 A1 DE4040431 A1 DE 4040431A1
- Authority
- DE
- Germany
- Prior art keywords
- filter
- scraper
- axis
- wire
- stripper
- 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.)
- Ceased
Links
- 239000012065 filter cake Substances 0.000 title claims abstract description 19
- 238000005188 flotation Methods 0.000 title claims abstract description 5
- 239000010802 sludge Substances 0.000 title claims abstract description 4
- 239000004744 fabric Substances 0.000 abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
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
- B01D33/44—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
- B01D33/466—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element scrapers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/32—Flow characteristics of the filter
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur Abnahme von Filterkuchen an kontinuierlich betriebenen Dreh filtern, beispielsweise zur mechanischen Entwässerung von Flotationsschlämmen mittels eines oberhalb des Filtertroges angeordneten Abstreifers.The invention relates to a device for acceptance from filter cake to continuously operated rotary filter, for example for mechanical drainage of flotation sludge using an above the Filter trough arranged scraper.
Wie unter anderem aus Glückauf Nr. 116, 1980, Seite 1006 bis 1012 als bekannt zu entnehmen ist, bestehen die bekannten Vorrichtungen zur Abnahme von Filterku chen aus messerartigen Schabern aus Metall oder Kunststoff, deren Spitze zur Trennung des Filterku chens vom Filtertuch bis dicht an das Filtertuch heranreicht.As for example from Glückauf No. 116, 1980, page 1006 to 1012 can be seen as known exist the known devices for removing filter ku chen from knife-like scrapers made of metal or Plastic, the tip of which separates the filter chens from the filter cloth to close to the filter cloth reaches.
Üblicherweise sind die oberhalb des Filtertroges an geordneten Schaber in ihrer Position unverrückbar an geordnet.They are usually on above the filter trough arranged scraper in their position orderly.
Der Nachteil der herkömmlichen Vorrichtung zur Ab nahme von Filterkuchen besteht im wesentlichen in dem hohen Verschleiß an der oberen Schaberkante und der damit verbundenen bei zunehmender Einsatzdauer abneh menden Kuchenabwurfrate. Weiterhin ist ein wesent licher Nachteil der herkömmlichen Anordnung bzw. Vor richtung in der Gefahr von Materialschäden am Filter tuch bei zu engem Anstellen des Schabers an das Fil tertuch zu sehen.The disadvantage of the conventional device for Ab Filter cake essentially consists in the high wear on the upper scraper edge and the related decrease with increasing duration of use cake drop rate. Another essential Licher disadvantage of the conventional arrangement or before Direction in the risk of material damage to the filter cloth if the scraper is too tight against the fil see cloth.
Ganz besondere Schwierigkeiten entstehen bei Verwen dung derartiger Schaber bei dünnen Filterkuchen. Da bei der Anstellung des Schabers bzw. der Spitze des Schabers an das Filtertuch ein schmaler Schlitz unum gänglich ist, besteht auch darin eine besondere Prob lematik. Das nicht vom Filtertuch abgestreifte Fil terkuchengut preßt sich durch den Schaber innerhalb des Schlitzes in das Filtertuch hinein und verringert beim Ansaugen des Feststoffes innerhalb der Suspen sion bzw. innerhalb des Filtertroges die zum Aus bringen wichtige Bildung des Filterkuchens.There are very special difficulties with Verwen of such scrapers in the case of thin filter cakes. There when the scraper or the tip of the Scraper a narrow slit on the filter cloth is a special prob lematics. The fil not stripped from the filter cloth Cake cake presses itself through the scraper inside of the slit into the filter cloth and reduced when sucking in the solid within the suspensions sion or within the filter trough to the off bring important formation of the filter cake.
Demgegenüber liegt der Erfindung die Aufgabe zu grunde, eine Vorrichtung zur Abnahme von Filterkuchen an kontinuierlich betriebenen Drehfiltern, beispiels weise zur mechanischen Entwässerung von Flotations schlämmen zu schaffen, die eine einfache und kosten günstige, sowie bei insbesondere dünnen Filterkuchen unproblematische Vorrichtung darstellt, und die dar über hinaus unter Vermeidung von Störungen und Scho nung des Filtertuchs eine Verbesserung im Ausbringen von Feststoffen aus Suspensionen ermöglicht.In contrast, the object of the invention grunde, a device for removing filter cakes on continuously operated rotary filters, for example for mechanical dewatering of flotations to create sludges that are simple and cost cheap, as well as in particular thin filter cake represents unproblematic device, and beyond avoiding interference and lap filter cloth an improvement in the application of solids from suspensions.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Abstreifer als mindestens ein parallel zum Filter sich um eine Achse drehender Draht ausgebildet ist. According to the invention, this object is achieved by that the scraper as at least one parallel to the Filter formed around an axis rotating wire is.
Ein derartig vorgespannter Draht, der um einen Mit telpunkt bzw. um eine Achse im freiwählbaren Abstand r mit der Frequenz rotieren kann, ist in einem einstellbaren Abstand vor dem Filtertuch angeordnet.Such a pre-tensioned wire, which is about a Mit telpunkt or around an axis at a freely selectable distance r can rotate with the frequency is in one adjustable distance in front of the filter cloth.
Dabei erweist es sich im Rahmen der Erfindung als be sonders vorteilhaft, daß unter einem entsprechenden Abstand zu einer Mittelachse mehrere oder eine Viel zahl von Drähten vorsehbar ist, die einen rotierenden Abstreifer bilden. Der oder die rotierenden Drähte greifen auf einer mehr oder weniger kleinen Kreisbahn in den Filterkuchen ein und zerstören durch ihre Be wegung den Filterkuchen soweit, daß er in vollem Um fang vom Filtertuch abbröckelt. Zur Führung des ab bröckelnden bzw. abgestreiften Filterkuchens erweist es sich als zweckmäßig, beispielsweise einen Abstrei fer herkömmlicher Art zur Führung anzubringen.It proves to be within the scope of the invention particularly advantageous that under a corresponding Distance to a central axis several or a lot number of wires is foreseeable, which is a rotating Form wipers. The rotating wire or wires engage in a more or less small circular path into the filter cake and destroy it with their be the filter cake so far that it is in full rotation start crumbling off the filter cloth. To manage the crumbling or stripped filter cake proves it is useful, for example a wipe fer conventional way to guide.
Weiterhin ist es vorstellbar, daß der oder die Drähte nicht in gleichmäßigem Abstand von der Mittelachse um diese rotieren, sondern daß die Drähte beispielsweise eine elliptische Bahn abfahren. Darüber hinaus er scheint es ohne weiteres vorstellbar, eventuell in verschiedenen Abständen zum Filtertuch übereinander mehrere derartige Abstreifer anzubringen, um den Fil terkuchen in vollem Umfang vom Filtertuch zu trennen, um dieses zur entsprechenden Aufnahme im Filtertrog freizumachen.Furthermore, it is conceivable that the wire or wires not at an equal distance from the central axis these rotate, but that the wires, for example take an elliptical path. In addition, he it seems easy to imagine, possibly in different distances from the filter cloth attach several such scrapers to the fil completely separate the cake from the filter cloth, around this for the corresponding recording in the filter trough to clear.
Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wird im folgenden näher erläutert. An embodiment of the invention is in the Drawings are shown and will be described in more detail below explained.
Es zeigen:Show it:
Fig. 1 einen Schnitt durch einen schematisiert dargestellten Drehfilter mit einer Vor richtung zur Abnahme des Filterkuchens, Fig. 1 shows a section through a schematically illustrated rotary filter having a pre direction to decrease the filter cake,
Fig. 2 eine Detaildarstellung eines Ausschnit tes aus Fig. 1 und Fig. 2 is a detailed view of a cutout from Fig. 1 and
Fig. 3 eine Detaildarstellung eines Abstreifers mit zwei um eine Achse drehenden Drähten. Fig. 3 is a detailed view of a stripper with two wires rotating about an axis.
Bei dem in Fig. 1 dargestellten Drehfilter 1 handelt es sich um einen um die Filterachse 3 drehenden Trom melfilter, der teilweise in einem Filtertrog 2 angeordnet ist, in dem sich eine Suspension aus Wasser und feinstkörnigem Gut befindet. Oberhalb des Filtertroges 2 ist zur Abnahme des Filterkuchens 4 ein Abstreifer vorgesehen, der aus der detaillierten Wiedergabe nach Fig. 2 und im Detail in Fig. 3 als Ausführungsbeispiel wiedergegeben ist.In the example shown in Fig. 1 rotary filter 1 is melfilter a rotating around the filter axis 3 Trom, which is partially arranged in a filter trough 2, in which a suspension of water and feinstkörnigem well is located. Above the filter trough 2 , a wiper is provided for removing the filter cake 4, which is shown as an exemplary embodiment from the detailed representation according to FIG. 2 and in detail in FIG .
Der Abstreifer 6 besteht in den in Fig. 2 darge stellten Ausführungsbeispiel aus einem vorgespannten Draht 9 aus einem entsprechend widerstandsfähigen Ma terial, der in Abstand vom Filtertuch 5 des Drehfil ters 1 und eine parallel zur Filterachse 3 an geordnete Achse 8 rotiert.The scraper 6 consists in the embodiment shown in Fig. 2 Darge from a biased wire 9 from a correspondingly resistant Ma material that rotates at a distance from the filter cloth 5 of the rotary filter 1 and one parallel to the filter axis 3 to an ordered axis 8 .
Die Drehrichtung des Drehfilters 1 und auch die Dreh richtung des Abstreifers 6 sind jeweils durch Pfeile wiedergegeben.The direction of rotation of the rotary filter 1 and also the direction of rotation of the scraper 6 are each represented by arrows.
Unterhalb des Abstreifers 6 ist ein Abstreifer 7 her kömmlicher Bauweise vorgesehen, der nur zur Führung des abggestreiften Filterkuchens 4 vorgesehen ist.Below the stripper 6 a stripper 7 ago conventional construction is provided, which is only provided for guiding the stripped filter cake 4 .
Ein weiteres Ausführungsbeispiel eines Abstreifers 6 besteht in schematisierter Form in einem Schnitt in Fig. 3 wiedergegeben. Der Abstreifer besteht aus zwei Drähten 9, die im gleichen Abstand r um eine parallel zur Filterachse 3 angeordnete Achse 8 rotie ren, wobei die Frequenz stufenlos regelbar ist.Another embodiment of a scraper 6 is shown in a schematic form in a section in FIG. 3. The scraper consists of two wires 9 , which rotate at the same distance r about an axis 8 arranged parallel to the filter axis 3 , the frequency being infinitely variable.
1 Drehfilter
2 Filtertrog
3 Filterachse
4 Filterkuchen
5 Filtertuch
6 Abstreifer
7 Abstreifer
8 Achse
9 Draht 1 rotary filter
2 filter trough
3 filter axis
4 filter cakes
5 filter cloth
6 wipers
7 wipers
8 axis
9 wire
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4040431A DE4040431A1 (en) | 1990-12-18 | 1990-12-18 | Removal of filter cake e.g. flotation sludge - from a continuously rotating filter drum using scraper made of one or more pieces of wire rotating around axis parallel to filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4040431A DE4040431A1 (en) | 1990-12-18 | 1990-12-18 | Removal of filter cake e.g. flotation sludge - from a continuously rotating filter drum using scraper made of one or more pieces of wire rotating around axis parallel to filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE4040431A1 true DE4040431A1 (en) | 1992-07-02 |
Family
ID=6420613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE4040431A Ceased DE4040431A1 (en) | 1990-12-18 | 1990-12-18 | Removal of filter cake e.g. flotation sludge - from a continuously rotating filter drum using scraper made of one or more pieces of wire rotating around axis parallel to filter |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE4040431A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10100145A1 (en) * | 2001-01-03 | 2002-07-04 | Reishauer Ag | Filtering out and drying solid particles from liquids, e.g. grinding chips from cooling lubricants, using filter candles arranged in a pressure vessel comprises interrupting filter operation to clean filter and remove filter discharge |
| CN109762682A (en) * | 2019-02-28 | 2019-05-17 | 宁波乐惠国际工程装备股份有限公司 | Scraper system and filter tank containing the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE700096C (en) * | 1937-07-08 | 1940-12-13 | Johannes Wiebe | Device for removing the filter cake from rotary cell filters |
| DE1536856A1 (en) * | 1966-05-11 | 1970-04-16 | Netzel Dipl Ing Gustav | Cake transfer roller for rotary filter |
-
1990
- 1990-12-18 DE DE4040431A patent/DE4040431A1/en not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE700096C (en) * | 1937-07-08 | 1940-12-13 | Johannes Wiebe | Device for removing the filter cake from rotary cell filters |
| DE1536856A1 (en) * | 1966-05-11 | 1970-04-16 | Netzel Dipl Ing Gustav | Cake transfer roller for rotary filter |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10100145A1 (en) * | 2001-01-03 | 2002-07-04 | Reishauer Ag | Filtering out and drying solid particles from liquids, e.g. grinding chips from cooling lubricants, using filter candles arranged in a pressure vessel comprises interrupting filter operation to clean filter and remove filter discharge |
| CN109762682A (en) * | 2019-02-28 | 2019-05-17 | 宁波乐惠国际工程装备股份有限公司 | Scraper system and filter tank containing the same |
| CN109762682B (en) * | 2019-02-28 | 2023-11-10 | 宁波乐惠国际工程装备股份有限公司 | Scraper system and filter tank comprising same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE2741710C2 (en) | Device for separating solids and liquids from a suspension | |
| DE3629947C2 (en) | Device for the continuous separation of solid particles from a liquid suspension | |
| DE69407037T2 (en) | ROTATING FILTER | |
| DE1916701A1 (en) | Method and device for dewatering sewage sludge or the like. | |
| DE2930581A1 (en) | CENTRIFUGE FOR SORTING AND SEPARATING SOLIDS | |
| DE2725645A1 (en) | METHOD AND DEVICE FOR CONTINUOUS FILTERING USING AN ENDLESS FILTER BELT | |
| DE102017205551A1 (en) | Bottle treating machine and method for cleaning the pump / nozzle guard of the bottle treating machine | |
| EP0291574A2 (en) | Filter rake | |
| WO1993000489A1 (en) | Elongated sand catcher for separating and removing sand from flume channels, in particular of sewage treatment plants | |
| DE69307604T2 (en) | Centrifuge for separating oil from oil sludge without adding drinking water | |
| DE4239083A1 (en) | ||
| DE69736485T2 (en) | FILTER SECTOR DEVICE FOR A ROTATING FILTER DISC | |
| DE3134871A1 (en) | DISC PRESS | |
| DE69511772T2 (en) | Disc filter feed device | |
| DE3342689C2 (en) | Filter device for removing impurities from liquids, especially from emulsion paints | |
| EP0630674A1 (en) | Apparatus for separating debris from a polluted liquid stream in a gully, especially from purification plants | |
| DE4314673C1 (en) | Worm drive axis - is positioned above and at a distance from the axis of the surrounding rotating sepn. surface | |
| DE2924794C2 (en) | Device for dewatering a fiber suspension | |
| DE69022489T2 (en) | Method for controlling a pressure screen device and pressure screen device. | |
| DE4040431A1 (en) | Removal of filter cake e.g. flotation sludge - from a continuously rotating filter drum using scraper made of one or more pieces of wire rotating around axis parallel to filter | |
| DE2757746A1 (en) | DEVICE FOR PROCESSING A SUSPENSION | |
| DE2434943A1 (en) | DEVICE FOR REMOVING LIQUID FROM A SUSPENSION | |
| DE3835676C2 (en) | ||
| DE3048955A1 (en) | Vacuum drum filter has external scraper and internal nozzle - for back blowing combined with second following nozzle for cleaning agent | |
| DE202015101486U1 (en) | screw Press |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OP8 | Request for examination as to paragraph 44 patent law | ||
| 8131 | Rejection |