DE1713310U - FILTER BODIES, IN PARTICULAR PAPER STAR FILTERS. - Google Patents

Description

eA.65OO7S-211.54

Godfather attorney pipl.-ing. egg pen eggs. stuttgart-n · kon igstrasse ΙΑ

October 22, 1954 / M

Applicant's filter plant i.lann & Hummel GmbH, Ludwigsburg

Utility model registration
A.4772

. Filter body, in particular paper star

filter.

For example, the filter media of filter bodies, in particular equipped with paper stars and support jackets, are to be embedded at their end-face edges in a potting compound, preferably made of a hardenable synthetic resin, which forms discs. It is also known to provide a grip ring on the outside of cardboard discs of filter bodies in order to be able to slide the patter body more comfortably onto a middle pipe arranged in the filter housing or to be able to pull it off from it. As a grip ring is in this case a cup-shaped sheet metal, ^r iiehteil provided, whose bottom part is herumgebb'rdelt around the edge of the central tube-passing the central hole of the end plate and holding a sealing ring for the center tube.

The innovation consists in the fact that in the case of filter bodies, the Pilternittel at its end-face R-'inders in a Potting compound is embedded, a handle element on the potting compound is cast. As a result, compared to the previous arrangement of handle elements in cardboard disks a

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considerable simplification achieved. If a curable synthetic resin is used as a casting compound, this is preferred in a thin-walled shell made of a tough material, E.g. cardboard or metal is poured in, which is perforated for the passage of the stylus formed on the potting compound is. This shell is the less viscous casting compound against tearing in the event of impact loads, e.g. when Letting the filter body fall is effectively protected, or it seals any cracks in the potting compound. Also offers the support shell during casting has the advantage that it is .verwendbar as a molded part at the same time, so that the mold considerably can be simplified.

The grip element can on the disk consisting of the potting compound an annular ring-shaped concentric to it Form collar approach, so have a similar shape as the previously ale special part made of sheet metal Grip ring «But you can also use the grip element by at least produce two handle approaches protruding from the potting compound protruding disc.

Instead of the grip element from the potting compound itself to form, one can also use a finished handle element, e.g. a Pour wire or textile loop into the casting compound. The sealing ring for sealing against a central tube passing through the end disks can also be used during casting of the end plates are cast in at the same time.

The innovation is explained below with reference to the exemplary embodiments shown in the drawing. Show it

Pig.1 a vertical section of the inserted into a filter housing Filter body ^ - 3 -

A.4772 - 3

Pig. 2 a section along line II-II through the filter body, Pig. 3 shows a partial section of the filter body for another embodiment,

Pig. 4 the same partial section for a third version, a further embodiment is indicated by dash-dotted lines.

The filter body has in the exemplary embodiments a folded paper pilter star 1, which is through a outer and an inner perforated jacket tube 2 and 3 is supported o The outer jacket tube 2 consists for example made of cardboard and the inner jacket tube 3 made of sheet metal. The filter body has end plates 4 and 5 on both of its front sides, that consists of a potting compound, preferably a non-hardenable one Are made of synthetic resin. In these end disks 4 and 5, the front edges of the pilter star 1 and its support * sheath 2 and 3 embedded. This is a perfect tight connection of the filter medium with the end caps achieved

The filter body is fixed in a manner known per se within a filter housing 6 on one with the bottom thereof connected central tube 7 pushed through the central holes of the iSndplatten 4 and 5, which with sealing rings 8 are bordered. The sealing rings 8 can, as shown, as U-shaped profiled rings on the edge the holes should be turned upside down. But you can also ring-shaped sealing body made of elastic material when casting the Pour the washers into the casting compound at the same time · The

on the fiittelrohr 7 pushed the filter body is through

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A.4772 - 4 -

a spring 10 provided between its upper end disk 4 and a cover 9 with a lower end disk 5 against printed a stop on the central tube 7 and thereby in position> held. The housing cover 9 is fixed by a screw 11 engaging in the upper end of the central tube 7. The protruding through the bottom of the filter housing 6 Sende of the Mittelrohree 7 forms one connection piece of the Filters. The other connecting piece 14 is provided on the jacket of the filter housing 6. For the passage of the The central pipe has 7 transverse bores 15

In the embodiment 3 example Fig.1, the ^: 'jidschel ^ ben 4 and 5 of the filter body' consist exclusively of the potting compound which has been poured into a mold and united within this with the frontal edges of the filter medium 1,2,3. At the present in the filter housing 6 above Endecheibe 4 of the filter body is outside a grip element in overall> Stalt of the center hole of the disc surrounding collar 16 is provided which is extended toward cup-like manner by its free sin for a more convenient input and ^f Removing to a to form a comfortable grip. The grip element 16 is made of one piece with the disk 4. It therefore forms part of the potting compound and is already produced when the pane is cast.

In the embodiment example Fig.5 let the potting compound 4 and 5 provided in a made of cardboard or a thin sheet of metal shell 17, which when pouring a Can form molded part «The shell 17 overlaps the outer edge of the disc and forms a protection for the less tough "Potting compound and a seal for any in the Ver. * Cracks created by casting compound. That in the execution game

Fig.3 in the same way as in Fig.1 as an annular one Collar-shaped grip element 16 of the disk 4 protrudes through an opening in the bottom of the dish.

In the embodiment Pig.4, the handle element consists of two handle extensions protruding from the disk: 18. If a protective shell 17 is present, the shell base is perforated for the handle extensions 18 to pass through

The grip element can also be cast into the casting compound as a special part when the edge disks are cast can lay.

Claims (1)

^r PA65007S-211. A.4772 - 6 - Protection claims 1. Filter element, in particular paper star filter, the filter means at its end-side edges in a preferably aas elnei ^harden: embedded existing irtbaren synthetic resin casting compound, characterized in that at least on one end face of the Filterltörpera to the encapsulant a grips lecaeB-t (16.18, 19) cast on is where the filter body during installation and removal can be combined · 2. Filter body according to claim 1, characterized in that the potting compound is poured into a thin-walled shell (17) from a tough Verkotoff solder which is perforated for the passage of the handle element (16,18,19) ο 3 «. Pilterkörper after the speeches 1 and 2, characterized indicated that the grip element is formed by a projecting of the group consisting of the potting compound disc (4) annular collar extension (16). 4. Filter body according to claims 1 and 2, characterized in that the handle element has at least two protruding handle lugs (18) are formed on the disc (4) consisting of the potting compound 5 filter body according to claims 1 and 2, characterized in that that a finished handle element (19) is poured into the potting compound. - 7 - β J * filter body according to claim 5 »characterized in that that the grip element poured into the potting compound is a wire or textile trail (19). 7. Filter body according to flen addresses 1 to 6 _f daäurch getcooi records that a sealing ring (Θ) zua sealing sswieohen the Schfcib «© (4,5) consisting of the potting compound and a central tube (7) passing through it in the Potting compound is poured in.