DE693390C - A dust filter consisting of a coarse filter and a fine filter - Google Patents

A dust filter consisting of a coarse filter and a fine filter

Info

Publication number
DE693390C
DE693390C DE1937D0076988 DED0076988D DE693390C DE 693390 C DE693390 C DE 693390C DE 1937D0076988 DE1937D0076988 DE 1937D0076988 DE D0076988 D DED0076988 D DE D0076988D DE 693390 C DE693390 C DE 693390C
Authority
DE
Germany
Prior art keywords
filter
edge
coarse
fine
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
Application number
DE1937D0076988
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.)
Draegerwerk AG and Co KGaA
Original Assignee
Draegerwerk AG and Co KGaA
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 Draegerwerk AG and Co KGaA filed Critical Draegerwerk AG and Co KGaA
Priority to DE1937D0076988 priority Critical patent/DE693390C/en
Application granted granted Critical
Publication of DE693390C publication Critical patent/DE693390C/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
    • A62B23/00—Filters for breathing-protection purposes

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Description

Aus einem Grobfilter und einem Feinfilter bestehendes Staubfilter Die. Erfindung betrifft ein aus einem Grobfilter und einem 'Feinfilter bestehendes Staubfilter.A dust filter consisting of a coarse filter and a fine filter The. The invention relates to an existing of a coarse filter and a 'fine filter Dust filter.

Die Erfindung besteht darin, daß. das innen glatte Filtergehäuse mit Außengewinde zur Aufnahme eines Schraubdeckels versehen ist, mittels dessen der um den Gehäuserand herumgelegte Feinfilterrand und ein zwischen Deckel und Feinfilter eingeschaltetes Zwischensieb festgeklemmt werden. Zwischen dem Zwischensieb und dem Schraubdeckel ist die Grobfiltermasse angeordnet.The invention consists in that. the inside smooth filter housing with External thread is provided for receiving a screw cap, by means of which the the edge of the fine filter placed around the edge of the housing and one between the lid and the fine filter switched on intermediate sieve are clamped. Between the intermediate sieve and The coarse filter material is arranged on the screw cap.

Das Außengewinde kann aus einem an den Gehäuserand vorteilhaft unter Verwendung @vo@ns Lack angefalzten oder angerollten Gewindering bestehen.The external thread can advantageously be taken from one on the edge of the housing Use @ vo @ ns varnish that is crimped or rolled on threaded ring.

Das Zwischensieb zur Aufnahme des Grobfilters weist vorzugsweise einen hochgezogenen Bördelrand auf, der um den Feinfilterrand, den Gehäuserand und. den in diesen eingefalzten Schraubring herumgerollt ist.The intermediate screen for receiving the coarse filter preferably has a raised beaded edge around the fine filter edge, the edge of the housing and. the rolled around in this crimped screw ring.

Ein in dieser Weise ausgebildetes Filter ist billig herzustellen, leicht zu beschicken und leicht zu zerlegen.A filter designed in this way is cheap to manufacture, easy to load and easy to dismantle.

In der Zeichnung ist eine Ausführungsform des neuen Staubfilters dargestellt.In the drawing, an embodiment of the new dust filter is shown.

Abb. I stellt einen Längsschnitt durch das Filter dar, und Abb.2 zeigt einen Schnitt durch den umgebördelten Rand in vergrößertem Maßstabe. In das Filtergehäuse a, dessen Innenwand glatt ist und dessen Rand b nach außen umgebogen ist, ist das Feinfilter d eingesetzt. Zwischen die Wand des Filtergehäuses und den umgebogenen Rand ist ein Gewindering c eingeklemmt. Der Feinfilterrand e ist in den hochgezogenen Bördelrand f des Zwischensiebes g eingerollt. Auf den Gewindering c ist der Deckellz aufgeschraubt. Zwischen die,-sem und dem Zwischensieb g- ist die Grobfiltermasse i angeordnet.Fig. I shows a longitudinal section through the filter, and Fig.2 shows a section through the beaded edge on an enlarged scale. In the filter housing a, whose inner wall is smooth and whose edge b is bent outwards, is that Fine filter d inserted. Between the wall of the filter housing and the bent Edge is clamped a threaded ring c. The fine filter edge e is in the raised The beaded edge f of the intermediate screen g is rolled up. The cover plate is on the threaded ring c unscrewed. The coarse filter mass is between the, -sem and the intermediate sieve g- i arranged.

Claims (2)

PATrNTANSPRÜCIIE: -I. Aus einem Grobfilter und einem Feinfilter bestehendes Staubfilter, dadurch gekennzeichnet, daß das innen glatte Filtergehäuse (a) mit Außengewinde zur Aufnahmeeines Schraubdeckels (h) versehen ist, mittels dessen der um den Gehäuserand (b) herumgelegte Feinfilterrand (e) und ein zwischen Deckel (h) und Ftrinfiltereingeschaltetes Zwischensieb (g) festgeklemmt werden, und daß zwischen dem Zwischensieb (g) und dem. Schraubdeckel (h) die Grobfiltermasse (i) angeordnet ist. PATENT CLAIM: -I. A dust filter consisting of a coarse filter and a fine filter, characterized in that the filter housing (a ), which is smooth on the inside, is provided with an external thread for receiving a screw cap (h), by means of which the fine filter edge (e) placed around the housing edge (b) and an intermediate cover ( h) and the intermediate sieve (g) switched on are clamped, and that between the intermediate sieve (g) and the. Screw cap (h) the coarse filter material (i) is arranged. 2. Staubfilter nach Anspruch I, dadurch gekennzeichnet, daß das Außengewinde aus einem an den Gehäuserand (b) vorzugsweise unter Verwendung von Lack angefalzten oder angerollten Gewindering (c) besteht. -3. Staubfilter nach Anspruch I oder 2, dadurch gekennzeichnet, daß das Zwischensieb (g) zur Aufnahme des Grobfilters (i) einen hochgezogenen Bördelrand (f) aufweist, der um den Feinfilterrand (e), den Gehäuserand (b) und den in diesen eingefalzten Schraubring (c) herumgerollt ist.2. Dust filter according to claim I, characterized in that that the external thread from one to the housing edge (b) is preferably using thread ring (c) which is flanged or rolled on by varnish. -3. Dust filter after Claim I or 2, characterized in that the intermediate sieve (g) for receiving of the coarse filter (i) has a raised beaded edge (f) which surrounds the fine filter edge (e), the edge of the housing (b) and the screw ring (c) folded into it is.
DE1937D0076988 1937-12-31 1937-12-31 A dust filter consisting of a coarse filter and a fine filter Expired DE693390C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1937D0076988 DE693390C (en) 1937-12-31 1937-12-31 A dust filter consisting of a coarse filter and a fine filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1937D0076988 DE693390C (en) 1937-12-31 1937-12-31 A dust filter consisting of a coarse filter and a fine filter

Publications (1)

Publication Number Publication Date
DE693390C true DE693390C (en) 1940-07-08

Family

ID=7062344

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1937D0076988 Expired DE693390C (en) 1937-12-31 1937-12-31 A dust filter consisting of a coarse filter and a fine filter

Country Status (1)

Country Link
DE (1) DE693390C (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1097282B (en) * 1959-07-18 1961-01-12 Auergesellschaft Gmbh Filter insert made of soft fiber to trap fine dust or suspended matter from the air you breathe
US3187489A (en) * 1960-09-09 1965-06-08 Cambridge Filter Corp Space filter
US4386948A (en) * 1979-12-20 1983-06-07 American Hospital Supply Corporation Filter drive
US4636231A (en) * 1985-08-15 1987-01-13 Allied Corporation Panel air filter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1097282B (en) * 1959-07-18 1961-01-12 Auergesellschaft Gmbh Filter insert made of soft fiber to trap fine dust or suspended matter from the air you breathe
US3187489A (en) * 1960-09-09 1965-06-08 Cambridge Filter Corp Space filter
US4386948A (en) * 1979-12-20 1983-06-07 American Hospital Supply Corporation Filter drive
US4636231A (en) * 1985-08-15 1987-01-13 Allied Corporation Panel air filter

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