DE4432095A1 - Hydraulic filter with element with end plates and radially situated inlet - Google Patents

Hydraulic filter with element with end plates and radially situated inlet

Info

Publication number
DE4432095A1
DE4432095A1 DE4432095A DE4432095A DE4432095A1 DE 4432095 A1 DE4432095 A1 DE 4432095A1 DE 4432095 A DE4432095 A DE 4432095A DE 4432095 A DE4432095 A DE 4432095A DE 4432095 A1 DE4432095 A1 DE 4432095A1
Authority
DE
Germany
Prior art keywords
filter
cover
receptacle
filter element
hydraulic
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.)
Granted
Application number
DE4432095A
Other languages
German (de)
Other versions
DE4432095C2 (en
Inventor
Guenther Mueller
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.)
Mahle Filtersysteme GmbH
Original Assignee
Knecht Filterwerk 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 Knecht Filterwerk GmbH filed Critical Knecht Filterwerk GmbH
Priority to DE4432095A priority Critical patent/DE4432095C2/en
Publication of DE4432095A1 publication Critical patent/DE4432095A1/en
Application granted granted Critical
Publication of DE4432095C2 publication Critical patent/DE4432095C2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B01D35/027—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks rigidly mounted in or on tanks or reservoirs
    • B01D35/0276—Filtering elements with a vertical rotation or symmetry axis mounted on tanks or reservoirs
    • 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
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter 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
    • B01D29/88—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices
    • B01D29/90—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding
    • B01D29/902—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor 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
    • 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
    • B01D29/96—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters
    • 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
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B01D35/027—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks rigidly mounted in or on tanks or reservoirs
    • 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
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/147—Bypass or safety valves
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/30—Filter housing constructions
    • B01D2201/301—Details of removable closures, lids, caps, filter heads
    • B01D2201/305—Snap, latch or clip connecting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/40—Special measures for connecting different parts of the filter
    • B01D2201/4084—Snap or Seeger ring connecting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • B01D36/001—Filters in combination with devices for the removal of gas, air purge systems

Landscapes

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

Abstract

A hydraulic filter, (return filter), has a ring-shaped radial flow filter element (8), with two end plates (9,10), a filter housing consisting of a filter bowl (7) and a cover (14). The end plate adjacent to the cover is releasably fitted in a receptacle (11) which simultaneously forms inflow shield for at least the part of the filter element in the area of the inlet opening (2). A by-pass valve (13) is incorporated in the receptacle, between the filtrate chamber and the untreated liq. chamber.

Description

Die Erfindung bezieht sich auf ein Hydraulikfilter nach dem Oberbegriff des Anspruchs 1.The invention relates to a hydraulic filter according to the Preamble of claim 1.

Derartige Filter sind aus der Praxis bekannt. Sie finden Verwendung z. B. als Saugfilter, als Druckfilter, als Rück­ lauffilter oder Nebenstromfilter. Die Baulänge derartiger Filter ist häufig dadurch mitbestimmt, daß der Zulauf nicht direkt auf das Filterelement treffen darf, da dieses durch den Auftreffimpuls zerstört werden könnte. Dies Problem führte zu Konstruktionen, bei denen der Zulauf oberhalb des Filterelements und auch oberhalb der Filterglocke in einem separaten Gehäuseteil mündet und von dort in die Filter­ glocke überströmt. Hierdurch wird die Baulänge der Filter­ glocke unnötig groß.Such filters are known from practice. you find Use e.g. B. as a suction filter, as a pressure filter, as a back running filter or bypass filter. The overall length of such Filters are often determined by the fact that the inlet is not may hit the filter element directly, as this is caused by the impact pulse could be destroyed. This problem led to constructions in which the inlet above the Filter element and also above the filter bell in one separate housing part opens and from there into the filter bell overflows. As a result, the length of the filter bell unnecessarily large.

Die Erfindung beschäftigt sich daher mit dem Problem, die Baulänge eines Hydraulikfilters, dessen Filterelement bei direkter Anströmung zerstört würde, zu verkleinern. Ein weiteres Ziel der Erfindung ist es, durch Funktionsvereini­ gung die Anzahl der Bauelemente gering zu halten.The invention is therefore concerned with the problem that Overall length of a hydraulic filter, the filter element at direct inflow would be destroyed. On Another object of the invention is through functional associations supply to keep the number of components low.

Dieses Problem wird gelöst durch eine Ausbildung des gat­ tungsgemäßen Hydraulikfilters mit den kennzeichnenden Merk­ malen des Patentanspruchs 1. Vorteilhafte Weiterbildungen sind Gegenstand der Unteransprüche. This problem is solved by training the gat appropriate hydraulic filter with the characteristic note paint the claim 1. Advantageous further developments are the subject of the subclaims.  

Der Erfindung liegt der Gedanke zugrunde, das Filterelement mit einer - an der Endscheibe vorzugsweise lösbar befestig­ ten - Aufnahme im Gehäuse zu fixieren und die Aufnahme zu­ mindest im Bereich der Zulauföffnung als Anströmschutz für das Filterelement auszubilden.The invention is based on the idea of the filter element with a - preferably releasably attached to the end plate ten - fix the mount in the housing and close the mount at least in the area of the inlet opening as flow protection for form the filter element.

Die Erfindung wird im folgenden anhand eines Ausführungs­ beispiels beschrieben. Es zeigtThe invention is based on an embodiment described for example. It shows

Fig. 1 einen erfindungsgemäßen Filter im Querschnitt. Fig. 1 shows a filter according to the invention in cross section.

Ein Rücklauffilter 1 weist einen Zulauf 2 und einen Ablauf 3 auf. Der Filter 1 kann mit einer Flachdichtung 4 auf ei­ nem nicht dargestellten Tank montiert werden. In den Filter 1 ist ein Belüftungsfilter 5 mit einem Belüftungskanal 6 integriert.A return filter 1 has an inlet 2 and an outlet 3 . The filter 1 can be mounted with a flat gasket 4 on a tank, not shown. A ventilation filter 5 with an ventilation channel 6 is integrated in the filter 1 .

Ein Filtertopf 7 beinhaltet ein Filterelement 8. Das Fil­ terelement 8 weist eine obere Endscheibe 9 und eine untere Endscheibe 10 auf. Die obere Endscheibe 9 sitzt in einer Aufnahme 11, deren Außenwandung 12 das Filterelement 8 so­ weit überdeckt, daß das über den Zulauf 2 zuströmende Medi­ um keinen direkten Impuls auf das Filterelement 8 erzeugen kann.A filter bowl 7 contains a filter element 8 . The Fil terelement 8 has an upper end plate 9 and a lower end plate 10 . The upper end plate 9 is seated in a receptacle 11 , the outer wall 12 of which covers the filter element 8 to such an extent that the medium flowing in via the inlet 2 can not generate a direct impulse on the filter element 8 .

In der Innenwandung der Aufnahme 11 sitzt ein Bypaßventil 13, das bei zu hoher Druckdifferenz am Filterelement 8 eine Umgehung des Filterelements ermöglicht. Ein Schraubdeckel 14 verschließt das Gehäuse von oben. Die axiale Fixierung des Filterelements 8 im Gehäuse erfolgt durch eine Feder 15, die sich gegen den Schraubdeckel 14 und gegen die Auf­ nahme 11 abstützt. An dem Schraubdeckel 14 befindet sich ein Bund 16, den von der Aufnahme 11 ausgehende Haken 17 hintergreifen. Da das Filterelement 8 mit seinen Endschei­ ben mit einer leichten Preßpassung sowohl mit der Aufnahme 11 als auch mit dem Filtertopf 7 verbunden ist, wird beim Hochnehmen des Deckels 14 auch das Filterelement 8 und der Filtertopf 7 nach oben gezogen.A bypass valve 13 is seated in the inner wall of the receptacle 11 and allows the filter element to be bypassed if the pressure difference at the filter element 8 is too high. A screw cap 14 closes the housing from above. The axial fixation of the filter element 8 in the housing is carried out by a spring 15 which is supported against the screw cap 14 and against the acquisition 11 . On the screw cap 14 there is a collar 16 which the hooks 17 extending from the receptacle 11 engage behind. Since the filter element 8 is connected with its end plates with a slight interference fit to both the receptacle 11 and the filter bowl 7 , the filter element 8 and the filter bowl 7 is also pulled up when the cover 14 is lifted up.

Claims (3)

1. Hydraulikfilter, vorzugsweise Rücklauffilter, mit ei­ nem ringförmig radial durchströmten Filterelement mit zwei Endscheiben, einem Filtergehäuse bestehend zumin­ dest aus einem Filtertopf und einem Filterdeckel und einem radialen oder tangentialen Zulauf, wobei die Mit­ telachse der Zulauföffnung radial auf das Filterelement gerichtet ist, dadurch gekennzeichnet, daß die dem Filterdeckel (14) benachbarte Endscheibe (9) lösbar verbunden dicht in einer Aufnahme (11) sitzt, die zugleich einen Anströmschutz für zumindest den im Bereich der Zulauföffnung (2) liegenden Teil des Filterelements (8) darstellt.1.Hydraulic filter, preferably a return filter, with an annular, radially flow-through filter element with two end plates, a filter housing consisting at least of a filter bowl and a filter cover and a radial or tangential inlet, the center axis of the inlet opening being directed radially onto the filter element, thereby characterized in that the end plate ( 9 ) adjacent to the filter cover ( 14 ) is detachably connected and tightly seated in a receptacle ( 11 ) which at the same time provides flow protection for at least the part of the filter element ( 8 ) located in the area of the inlet opening ( 2 ). 2. Hydraulikfilter nach Anspruch 1, dadurch gekennzeichnet, daß in die Aufnahme (11) ein Bypaßventil (13) zwischen Filter-Reinraum und Filter-Rohraum integriert ist.2. Hydraulic filter according to claim 1, characterized in that in the receptacle ( 11 ) a bypass valve ( 13 ) is integrated between the filter clean room and the filter tube room. 3. Hydraulikfilter nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Aufnahme (11) Haken (17) aufweist, die in einen an den Deckel (14) angeformten Bund (16) oder in einge­ formte Fenster greifen und die bei Abziehen des Deckels (14) zur gleichzeitigen Entnahme des Filterelements (8) aus dem Filtergehäuse führen oder daß umgekehrt der Deckel (14) Haken aufweist, die in einen an die Aufnah­ me (11) angeformten Bund greifen.3. Hydraulic filter according to claim 1 or 2, characterized in that the receptacle ( 11 ) has hooks ( 17 ) which engage in a collar ( 16 ) integrally formed on the cover ( 14 ) or in molded windows and which when the cover is removed ( 14 ) for the simultaneous removal of the filter element ( 8 ) from the filter housing or, conversely, that the cover ( 14 ) has hooks which engage in a collar formed on the receptacle ( 11 ).
DE4432095A 1994-09-09 1994-09-09 hydraulic filters Expired - Lifetime DE4432095C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE4432095A DE4432095C2 (en) 1994-09-09 1994-09-09 hydraulic filters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4432095A DE4432095C2 (en) 1994-09-09 1994-09-09 hydraulic filters

Publications (2)

Publication Number Publication Date
DE4432095A1 true DE4432095A1 (en) 1996-03-14
DE4432095C2 DE4432095C2 (en) 2002-01-17

Family

ID=6527781

Family Applications (1)

Application Number Title Priority Date Filing Date
DE4432095A Expired - Lifetime DE4432095C2 (en) 1994-09-09 1994-09-09 hydraulic filters

Country Status (1)

Country Link
DE (1) DE4432095C2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29921140U1 (en) * 1999-12-02 2001-04-05 Ing. Walter Hengst GmbH & Co KG, 48147 Münster Liquid filter with an outer end disc
EP2826534A1 (en) * 2013-07-16 2015-01-21 RT-Filtertechnik Gmbh Filter device
DE102014102794A1 (en) * 2014-03-03 2015-09-03 Fsp Fluid Systems Partners Holding Ag Filter device for filtering a hydraulic fluid

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2766890A (en) * 1949-07-08 1956-10-16 Bendix Aviat Corp Fluid purifier
US2929506A (en) * 1958-06-19 1960-03-22 Fram Corp Combined full-flow and part-flow oil filters
DE1461434B1 (en) * 1964-06-15 1970-03-12 Michigan Dynamics Inc filter
US3507391A (en) * 1969-02-18 1970-04-21 Parker Hannifin Corp Filter device
DE2324395A1 (en) * 1972-05-15 1973-11-29 Labinal FILTER CARTRIDGE
DE4310234C1 (en) * 1993-03-30 1994-08-18 Argo Feinmechanik Backflow filter for liquids

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2766890A (en) * 1949-07-08 1956-10-16 Bendix Aviat Corp Fluid purifier
US2929506A (en) * 1958-06-19 1960-03-22 Fram Corp Combined full-flow and part-flow oil filters
DE1461434B1 (en) * 1964-06-15 1970-03-12 Michigan Dynamics Inc filter
US3507391A (en) * 1969-02-18 1970-04-21 Parker Hannifin Corp Filter device
DE2324395A1 (en) * 1972-05-15 1973-11-29 Labinal FILTER CARTRIDGE
DE4310234C1 (en) * 1993-03-30 1994-08-18 Argo Feinmechanik Backflow filter for liquids

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29921140U1 (en) * 1999-12-02 2001-04-05 Ing. Walter Hengst GmbH & Co KG, 48147 Münster Liquid filter with an outer end disc
EP2826534A1 (en) * 2013-07-16 2015-01-21 RT-Filtertechnik Gmbh Filter device
DE102014102794A1 (en) * 2014-03-03 2015-09-03 Fsp Fluid Systems Partners Holding Ag Filter device for filtering a hydraulic fluid
DE102014102794B4 (en) 2014-03-03 2018-05-03 Fsp Fluid Systems Partners Holding Ag Filter device for filtering a hydraulic fluid
US10010816B2 (en) 2014-03-03 2018-07-03 Fsp Fluid Systems Partners Holding Ag Filter device for filtering a hydraulic fluid

Also Published As

Publication number Publication date
DE4432095C2 (en) 2002-01-17

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8110 Request for examination paragraph 44
8127 New person/name/address of the applicant

Owner name: MAHLE FILTERSYSTEME GMBH, 70376 STUTTGART, DE

D2 Grant after examination
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)
R071 Expiry of right
R071 Expiry of right