DE19523463B4 - Backwashable filter for liquids - Google Patents
Backwashable filter for liquids Download PDFInfo
- Publication number
- DE19523463B4 DE19523463B4 DE19523463A DE19523463A DE19523463B4 DE 19523463 B4 DE19523463 B4 DE 19523463B4 DE 19523463 A DE19523463 A DE 19523463A DE 19523463 A DE19523463 A DE 19523463A DE 19523463 B4 DE19523463 B4 DE 19523463B4
- Authority
- DE
- Germany
- Prior art keywords
- filter
- filter body
- material web
- segments
- housing
- 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 - Fee Related
Links
- 239000007788 liquid Substances 0.000 title claims abstract description 14
- 239000012535 impurity Substances 0.000 claims abstract description 11
- 239000000356 contaminant Substances 0.000 claims abstract description 6
- 239000000725 suspension Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 30
- 239000011888 foil Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 238000004804 winding Methods 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000007654 immersion Methods 0.000 claims description 2
- 239000000314 lubricant Substances 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000011001 backwashing Methods 0.000 abstract description 6
- 239000005068 cooling lubricant Substances 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 238000011109 contamination Methods 0.000 description 2
- 230000004323 axial length Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011086 high cleaning Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/114—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for inward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
- B01D29/682—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles with a rotary movement with respect to the filtering element
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
- B01D29/688—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles with backwash arms or shoes acting on the cake side
-
- 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
- B01D33/067—Construction of the filtering drums, e.g. mounting or sealing arrangements
-
- 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
- B01D33/35—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition
- B01D33/37—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition in parallel connection
- B01D33/39—Filters with filtering elements which move during the filtering operation with multiple filtering elements characterised by their mutual disposition in parallel connection concentrically or coaxially
-
- 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
- B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D33/50—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
- B01D33/503—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles the backwash arms, shoes acting on the cake side
-
- 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
- B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
- B01D33/72—Filters with filtering elements which move during the filtering operation having feed or discharge devices for feeding
- B01D33/722—Filters with filtering elements which move during the filtering operation having feed or discharge devices for feeding containing fixed liquid displacement elements or cores
-
- 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
- B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
- B01D33/72—Filters with filtering elements which move during the filtering operation having feed or discharge devices for feeding
- B01D33/727—Filters with filtering elements which move during the filtering operation having feed or discharge devices for feeding provoking a tangential stream
-
- 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
- B01D2201/287—Filtering elements with a vertical or inclined rotation or symmetry axis
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
Rückspülbares Filter für Verunreinigungen enthaltende Flüssigkeiten, insbesondere verunreinigte Kühl-Schmierstoff-Suspensionen, bei dem
a) mehrere in einem stehenden, etwa kreiszylindrischen Filtergehäuse (1) stehend angeordnete, etwa kreiszylindrische Filterkörper (2) mit an deren jeweils oberem und unterem Ende vorgesehenen Abdeckungen (4, 3) einen äußeren Zuströmraum (5) mit einem Zuströmeinlass (6) von innerhalb der Filterkörper (2) liegenden Abströmräumen (7) trennen,
b) das untere Ende des Flüssigkeitsgehäuses (1) mit einem schließbaren Auslass (9) für abgeschiedene Verunreinigungen versehen ist,
c) die Filterkörper (2) in gleichem Abstand von der Mittelachse des Filtergehäuses (1) parallelstehend gemeinsam drehantreibbar gelagert sind,
d) die oberen Enden der Filterkörper (2) an einer gemeinsamen oberen Abdeckung (4) anliegen,
e) im Zentrum des Filtergehäuses ein gemeinsamer, sich über die Höhe der Filterkörper (2) erstreckender, unbeweglicher Rückspülkanal (11) vorgesehen ist, an dem die Filterkörper (2) mit ihrer Außenfläche jeweils gegenüber dem Rückspülkanal (11) verdrehbar anliegen,
f) der Rückspülkanal (11) mit...Backwashable filter for liquids containing contaminants, in particular contaminated cooling lubricant suspensions, in which
a) Several, approximately circular-cylindrical filter bodies (2) arranged in a standing, approximately circular-cylindrical filter housing (1) with covers (4, 3) provided on their respective upper and lower ends, an outer inflow space (5) with an inflow inlet (6) of separate outflow spaces (7) within the filter body (2),
b) the lower end of the liquid housing (1) is provided with a closable outlet (9) for separated impurities,
c) the filter bodies (2) are mounted at the same distance from the central axis of the filter housing (1) in parallel and can be driven in rotation,
d) the upper ends of the filter bodies (2) rest on a common upper cover (4),
e) in the center of the filter housing, there is a common, immovable backwashing channel (11), which extends over the height of the filter body (2) and against which the outer surface of the filter body (2) rotates relative to the backwashing channel (11),
f) the backwash channel (11) with ...
Description
Die Erfindung betrifft ein rückspülbares Filter für Verunreinigungen enthaltende Flüssigkeiten, insbesondere verunreinigte Kühl-Schmierstoff-Suspensionen.The invention relates to a backwashable filter for contaminants containing liquids, especially contaminated cooling lubricant suspensions.
Aus
Bei rückspülbaren Filtern nach
Bei dem Filter nach
Die Erfindung beschäftigt sich mit dem Problem, ein insbesondere besonders rationell rückspülbares Filter zu schaffen, das heißt ein Filter, bei dem eine Rückspülung sämtlicher Filterkörper in einer möglichst kurzen Zeit und mit hoher Reinigungswirkung erzielt werden kann.The invention is concerned with the problem of a particularly efficient, backwashable filter to create, that is a filter in which a backwash of all filter body in one if possible can be achieved in a short time and with a high cleaning effect.
Gelöst wird dieses Problem durch ein rückspülbares Filter mit den Merkmalen des Patentanspruchs 1.This problem is solved by a backwashable filter with the features of claim 1.
Der Vorteil, der sich mit der erfindungsgemäßen Lösung erreichen lässt, ist unabhängig von der Struktur der Filterkörper und auch davon, ob das Abreinigen der Außenflächen der Filterkörper ausschließlich durch Rückspülung oder zusätzlich durch Abstreifen erfolgt, und ob eine Vorabscheidung vorgesehen ist.The advantage that can be achieved with the solution according to the invention leaves, is independent on the structure of the filter body and also whether the cleaning of the outer surfaces of the filter body exclusively by Backwash or additionally done by stripping, and whether pre-separation is provided is.
Eine räumlich besonders günstige Anordnung läßt sich dadurch erzielen, daß der Rückspülkanal im Bereich des unteren Endes des Filtergehäuses nach seitwärts aus letzterem herausgeführt ist.A particularly favorable arrangement let yourself achieve that the Backwash channel in the Area of the lower end of the filter housing sideways the latter led out is.
Die Filterkörper können entweder als Kantenspaltfilterkörper ausgebildet sein oder einen inneren und einen äußeren, gelochten Stützmantel und eine dazwischen angeordnete Filtermaterialbahn, wie z.B. Drahtgewebe oder geätzte Metallfolie, aufweisen.The filter bodies can either be designed as edge filter bodies be or an inner and an outer, perforated support jacket and an intermediate filter material web, e.g. wire cloth or etched Have metal foil.
Außerdem können die Filterkörper je ein Spaltrohr mit inneren, achsparallelen Tragstäben und diese umschließender, achsiale Abstände der einzelnen Windungen voneinander aufweisender Profilwicklung und eine über letztere gespannte, sich jeweils über den Umfang des Filterkörpers erstreckende Filtermaterialbahn, wie Drahtgewebe oder geätzte Metallfolie, aufweisen.In addition, the filter body can each a can with inner, axially parallel supporting rods and enclosing them, axial distances of the individual turns of the profile winding and one over the latter stretched, each extending over the circumference of the filter body Have filter material web, such as wire mesh or etched metal foil.
Eine Vorabscheidung insbesondere gröberer Verunreinigungen kann dadurch erzielt werden, daß der Zuströmeinlaß in dem oberen Bereich des Zuströmraumes tangential in das Filtergehäuse einmündet, und daß von der an den oberen Enden der Filterkörper vorgesehenen Abdeckung von der Innenfläche des Filtergehäuses und den Außenflächen der Filterkörper beabstandet ein etwa kreiszylindrisches Tauchrohr bis maximal in den Bereich der. unteren Enden der Filterkörper nach unten ragt.A pre-separation in particular coarser impurities can be achieved in that the Inflow inlet in the upper area of the inflow space tangentially into the filter housing opens, and that of the cover provided at the upper ends of the filter body from the inner surface of the filter housing and the outer surfaces of the filter body spaced an approximately circular cylindrical immersion tube up to a maximum of the area of. lower ends of the filter body protrudes downwards.
Durch die Zyklonwirkung, der die einströmende Flüssigkeit mit Verunreinigungen ausgesetzt ist, werden gröbere Verunreinigungen in dem äußeren Bereich des Einströmraumes unmittelbar abgeschieden, und durch das Tauchrohr wird ein unmittelbares Anströmen der Außenflächen der Filterkörper durch die Flüssigkeit mit Verunreinigungen verhindert. Dadurch können sich auf den Außenflächen der Filterkörper gröbere Verunreinigungen nicht festsetzen. Letztere sammeln sich vielmehr im Bereich des unteren Endes des Filtergehäuses an. Die Flüssigkeit mit verbleibenden feineren Verunreinigungen umströmt das untere Ende des Tauchrohres, das als Abscheidekante für weitere Verunreinigungen wirkt, die aus der außerhalb des Tauchrohres abwärts und innerhalb desselben aufwärts tangential strömenden Flüssigkeit abgeschieden werden. Die Flüssigkeit gelangt dann auf die Außenflächen der Filterkörper, auf denen sich die feineren Verunreinigungen ablagern. Nur die von Verunreinigungen befreite Flüssigkeit gelangt durch die Filterkörper hindurch in den Abströmraum.Due to the cyclone effect, the incoming liquid exposed to contaminants, coarser contaminants become in the outer area of the inflow space immediately deposited, and through the dip tube an immediate Provide flow the outer surfaces of the Filter body through the liquid prevented with contamination. This can result in coarser contaminants on the outer surfaces of the filter bodies do not fix. The latter rather accumulate in the lower area End of the filter housing on. The liquid with remaining fine impurities flows around the lower one End of the dip tube, which acts as a separating edge for further contamination acts out of the outside down the dip tube and upwards within it tangentially flowing liquid be deposited. The liquid then reaches the outer surfaces of the Filter body, on which the finer impurities are deposited. Only that of Liquid freed of impurities passes through the filter body through into the outflow space.
Als zusätzliche Mittel zum Abreinigen der Außenflächen der Filterkörper können an diesen Außenflächen anliegende Abstreifer innerhalb des Filtergehäuses ortsfest angeordnet sein.As an additional means of cleaning the outer surfaces of the filter body can adjoining these outer surfaces Wipers can be arranged in a stationary manner within the filter housing.
Eine Steigerung der Wirkung der Rückspülung läßt sich dadurch erzielen, daß jeder Filterkörper in getrennt durchströmbare Segmente unterteilt ist, deren Bogenlänge höchstens gleich der Bogenlänge der Segmente des Rückspülkanals ist.The effect of the backwash can be increased by making everyone Filter body in can be flowed through separately Is divided into segments whose arc length is at most equal to the arc length of the Backwash channel segments is.
Die Unterteilung der Filterkörper in getrennt durchströmbare Segmente kann dabei durch verschiedene Maßnahmen erreicht werden.The division of the filter body into can be flowed through separately Different measures can be used to reach segments.
Bei als Kantenspaltfilterkörpern ausgebildeten Filterkörpern können auf deren Außenflächen achsparallele Trennstäbe befestigt sein. When trained as edge filter bodies th filter bodies can be attached to their outer surfaces axially parallel separating rods.
Bei als Kantenspaltfilterkörpern ausgebildeten Filterkörpern können auch auf deren Außenflächen anliegende Trennstäbe vorgesehen sein, die auf der Innenfläche des jeweils einen Kantenspaltfilterkörper umschließenden, gelochten Stützmantels angeordnet sind.For trained as edge filter bodies filter bodies can also lying on their outer surfaces Dividers be provided on the inner surface of the edge filter body, perforated support jacket arranged are.
Bei je einen inneren und einen äußeren, gelochten Stützmantel und eine dazwischen angeordneten Filtermaterialbahn, wie Drahtgewebe oder geätzte Metallfolie, aufweisenden Filterkörpern können entweder auf der Außenfläche des äußeren Stützmantels achsparallele Rippen vorgesehen sein, oder die Filtermaterialbahn selbst kann durch Faltung zwischen den Stützmänteln und über den Umfang abwechselnde Anlage in achsparallelen Streifen an der Außenfläche des inneren und der Innenfläche des äußeren Stützmantels die Unterteilung in Segmente bilden.With an inner and an outer, perforated supporting jacket and an interposed filter material web, such as wire mesh or etched Metal foil, filter bodies can either on the outer surface of the outer support jacket axially parallel ribs may be provided, or the filter material web itself can alternate by folding between the support coats and across the circumference Application in axially parallel strips on the outer surface of the inner and the inner surface of the outer support jacket form the division into segments.
Bei je einen inneren und einen äußeren, gelochten Stützmantel und eine dazwischen angeordnete Filtermaterialbahn aufweisenden Filterkörpern kann auch die Filtermaterialbahn sich über den Umfang jedes Filterkörpers erstreckend über von dem inneren, gelochten Stützmantel radial nach außen weisende Stege gespannt sein, wobei achsparallele, auf der Außenfläche der Filtermaterialbahn anliegende Trennstäbe vorgesehen sind, die auf der Innenfläche des die Filtermaterialbahn umschließenden, äußeren, gelochten Stützmantels angeordnet sind.With an inner and an outer, perforated supporting jacket and having a filter material web disposed therebetween Filter bodies can the filter material web also extends over the circumference of each filter body from the inner, perforated support jacket radially outwards pointing webs to be tensioned, being axially parallel, on the outer surface of the Separating rods adjacent to the filter material web are provided on the inner surface of the the outer, perforated surrounding the filter material web supporting jacket are arranged.
Bei Filterkörpern, die je ein Spaltrohr mit inneren, achsparallelen Tragstäben und diese umschließender, achsiale Abstände der einzelnen Windungen voneinander aufweisender Profilwicklung und eine über letztere gespannte, sich über den Umfang des Filterkörpers erstreckende Filtermaterialbahn aufweisen, können entweder auf der Außenfläche der Filtermaterialbahn anliegende, achsparallele Trennstäbe, die auf der Innenfläche eines die Filtermaterialbahn umschließenden, äußeren, gelochten Stützmantels angeordnet sind, oder auf der Außenfläche der Filtermaterialbahn befestigte, achsparallele Trennstäbe vorgesehen sein.For filter bodies, each with a can with inner, axially parallel supporting rods and enclosing them axial distances of the individual turns of profile winding and one over the latter stretched over the circumference of the filter body extending filter material web can either on the outer surface of the Filter material web adjacent, axially parallel separating rods that on the inner surface an outer, perforated support jacket enclosing the filter material web are arranged, or on the outer surface of the filter material web attached, axially parallel separating rods may be provided.
Die zur Unterteilung der Filterkörper in Segmente vorgesehenen Maßnahmen bewirken zugleich, daß beim Drehen der Filterkörper auf deren Außenflächen abgelagerte, gröbere Verunreinigungen nicht mechanisch in diese Außenflächen eingepreßt werden können, wobei auf die Anwendung von auf den Außenflächen der Filterkörper anliegenden Abstreifern zu verzichten ist.To divide the filter body into Measures provided for segments cause at the same time that at Rotate the filter body deposited on their outer surfaces, coarser Impurities cannot be pressed mechanically into these outer surfaces can, with the use of scrapers resting on the outer surfaces of the filter bodies is to be dispensed with.
In der Zeichnung ist ein Ausführungsbeispiel eines Filters nach der Erfindung mit Vorabscheidung dargestellt, und zwar zeigtIn the drawing is an embodiment of a Filters according to the invention shown with pre-separation, namely shows
In einem stehenden kreiszylindrischen
Filtergehäuse
Ein mittig in dem Filtergehäuse
In
Bei der Darstellung in
In
In
In
In
In
In
Claims (15)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19523463A DE19523463B4 (en) | 1995-06-28 | 1995-06-28 | Backwashable filter for liquids |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19523463A DE19523463B4 (en) | 1995-06-28 | 1995-06-28 | Backwashable filter for liquids |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19523463A1 DE19523463A1 (en) | 1997-01-02 |
DE19523463B4 true DE19523463B4 (en) | 2004-09-09 |
Family
ID=7765444
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19523463A Expired - Fee Related DE19523463B4 (en) | 1995-06-28 | 1995-06-28 | Backwashable filter for liquids |
Country Status (1)
Country | Link |
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DE (1) | DE19523463B4 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103463863A (en) * | 2013-09-13 | 2013-12-25 | 神木富油能源科技有限公司 | Coal tar filtering device and method |
CN109364539A (en) * | 2018-12-29 | 2019-02-22 | 徐建平 | A kind of large-scale backwash folding piece type water distributor with electromagnet structure |
CN109952137A (en) * | 2016-10-12 | 2019-06-28 | Hydac处理技术有限公司 | Filter plant |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19734588A1 (en) * | 1997-08-09 | 1999-02-11 | Boll & Kirch Filter | Backwashing filter |
DE19803083A1 (en) * | 1998-01-28 | 1999-07-29 | Knecht Filterwerke Gmbh | Continuously operating backwash filter |
DE10239693A1 (en) * | 2002-08-29 | 2004-03-18 | Piller Entgrattechnik Gmbh | Process for cleaning a filter |
GB2431889B (en) | 2005-11-03 | 2010-09-29 | Petreco Int Ltd | Strainer assembly |
GB2467029B (en) * | 2007-05-01 | 2011-07-06 | Cameron Int Corp | Strainer assembly |
US9421482B2 (en) * | 2008-08-27 | 2016-08-23 | Cameron International Corporation | Method of straining fluid |
CN116173593B (en) * | 2023-04-24 | 2023-08-01 | 惠州市宝惠电子科技有限公司 | Transformer immersion oil filter equipment |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3209216A1 (en) * | 1982-03-13 | 1983-09-15 | Filterwerk Mann & Hummel Gmbh, 7140 Ludwigsburg | Liquid filter which can be backwashed in sections |
DE3430523A1 (en) * | 1984-08-18 | 1986-02-27 | Dango & Dienenthal Maschinenbau GmbH, 5900 Siegen | LIQUID FILTER |
US4906373A (en) * | 1988-06-21 | 1990-03-06 | Mordeki Drori | Multiple filter elements with movable flushing assembly |
US5152895A (en) * | 1989-04-25 | 1992-10-06 | Charles Doucet | Method for cleaning filter elements and filter for implementing it |
DE4125358A1 (en) * | 1991-07-31 | 1993-02-04 | Hansjochen E Tonne | Device to remove solid particles from liq. filter |
DE4222495C2 (en) * | 1992-07-09 | 1994-08-11 | Mann & Hummel Filter | Backwashable liquid filter |
-
1995
- 1995-06-28 DE DE19523463A patent/DE19523463B4/en not_active Expired - Fee Related
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3209216A1 (en) * | 1982-03-13 | 1983-09-15 | Filterwerk Mann & Hummel Gmbh, 7140 Ludwigsburg | Liquid filter which can be backwashed in sections |
DE3430523A1 (en) * | 1984-08-18 | 1986-02-27 | Dango & Dienenthal Maschinenbau GmbH, 5900 Siegen | LIQUID FILTER |
US4906373A (en) * | 1988-06-21 | 1990-03-06 | Mordeki Drori | Multiple filter elements with movable flushing assembly |
US5152895A (en) * | 1989-04-25 | 1992-10-06 | Charles Doucet | Method for cleaning filter elements and filter for implementing it |
DE4125358A1 (en) * | 1991-07-31 | 1993-02-04 | Hansjochen E Tonne | Device to remove solid particles from liq. filter |
DE4222495C2 (en) * | 1992-07-09 | 1994-08-11 | Mann & Hummel Filter | Backwashable liquid filter |
Cited By (6)
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DE19523463A1 (en) | 1997-01-02 |
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OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8127 | New person/name/address of the applicant |
Owner name: MAHLE FILTERSYSTEME GMBH, 70376 STUTTGART, DE |
|
8110 | Request for examination paragraph 44 | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |