DE1944823U - CANDLE-SHAPED FILTER ELEMENT. - Google Patents

Description

candle-shaped filter element

The hiring relates to a candle-shaped filter element, which is mainly used in anti-flooding filters and is particularly suitable for manufacture from plastic.

The precoat filters for ®ase and liquids work in the Usually with plate elements consisting of a support body provided with filtrate drainage channels and a carrier for receiving the absorbent material and / or the filtered out residues. Such filter elements must be rigid, pressure-resistant and stable and a reliable seal even under pressure allow. The pure filtrate collects within the

Elements and is directed into a collecting duct, from where it is either discharged upwards or downwards becomes many due to the flat design that is required To accommodate elements in a unit, the construction becomes cumbersome and therefore expensive. Above all, great care must be taken to collect the re-infiltrate from all parts of the element

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to be applied to the central channel, one has also been used for Precoat filter card-shaped elements proposed in which about plate-shaped parts are lined up on a tie rod, but where "with the same problem as with the plate elements described occurs.

When hiring "consists of the support body dee candle-shaped element from a thin-walled plastic tube, the wall of which runs in or approximately in the circumferential direction and is adjacent to one another Has waves. Preferably on the wave troughs, i.e. on the inwardly directed wall parts of the pipe, the imfang 'arbitrarily distributed interruptions attached. The carrier for the Änsohwemmaterlal consists of one that is marked Tube encompassing sleeve made of porous material, especially plastic, made of natural or artificial tissue or the like.

To simplify production, the openings can be provided in the wave troughs as slots running one behind the other in the longitudinal direction of the pipe.

The new type of element is characterized by its extreme simplicity and cheap production, and still results in a stable one candle-shaped element, in which no difficulties regarding the collection and even discharge of the pure filtrate occur. The support body also forms the jamming channel.

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In special training the! Inflation is still provided for any stiffening of the plastic pipe this on one Pull up pressure and flexurally rigid body, where it may be. it is possible to design the outer body of this body to match the inside of the corrugated pipe, if necessary. in such a way that the body can be screwed into the corrugated pipe.

Finally, provision can also be made for the plastic pipe to be wrapped in a screw-like manner with a porous tape made of paper, fabric or plastic and for the seams in contact with one another to be closed. sew or weld, eliminating the need for the longitudinal seams of the usual filter bags. This has the advantage, especially when using the new type of filter candle in ansehwemmfilter, that the alluvial filter cake fully surrounds the curve of the candle and thereby the adhesion of the cake is improved, since, as already indicated, the vertical dividing line formed by the sewing or welding seam, which prevents the formation of a comprehensive filter cake, in case of failure.

Exemplary embodiments of the innovation are shown in the drawing namely show:

Fig. 1 is a longitudinal section through a novel kerssen-shaped Filter element 5

Fig. 2 shows a cross section through this element? 5 shows a partial view of another embodiment of a filter element °,

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Fig. 4 is a plan view of the element of Fig. 3?

5 shows a section through a further embodiment and 6 shows an example which illustrates the installation of an element in a precoat filter unit, partly in FIG Cut.

The support body according to! 1 and 2 is through the thin-walled Plastic pipe 1 formed, which on its circumference with adjacent Shafts 2 is provided, which are either perpendicular to the Jjängsachse of the pipe or, if necessary. also inclined, for example can run helically. At the wave troughs 3 are distributed arbitrarily on the circumference, in the longitudinal direction successive slots 4 attached, the openings form fe ^ aag in the Hohrwandung. On the support body is the carrier 5 made of tissue or the like. any material, on which the Ansohweimmaterial 6, as indicated by dashed lines is indicated, is applied.

In the embodiment of the Pig. 3 and 4, the carrier 5a consists of a porous foil strip which is screwed around the corrugated pipe 1 is wound and is sewn or welded to the touching edges 7. To for certain cases, in particular in the case of very long elements, to achieve sufficient compression and flexural strength of the corrugated pipe, sits in the latter a rigid and rigid body that emerges from a drill composed of fins 9 directed radially outward thereon.

The outer edges 10 of the fins lie firmly on the inside of the corrugated pipe. The tube 8 can also serve to hold a tie rod not shown in the drawing of the element.

In the example of FIG. 5, the fins 9 of the tube 8 are provided on their outer edge with prongs or waves 12, which are adapted to the waves on the inside of the plastic pipe 1. GFgfl. are here the shafts 2 of the plastic pipe arranged helically, so that the correspondingly arranged shafts 12 screwing of the tube 8 into the corrugated tube enable. In this illustration it is also shown that the element is secured on the underside by a screw-in stopper 13 can be locked.

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The example of the Pig, 6 schematically shows the installation #ea? according to the invention Element in the housing 14 of the filter unit, in which the turbid liquid is fed through the line and the pure infiltrate discharged through the overhead line 16 will. On the housing cover with openings 17, the corrugated tube 1 provided with the carrier 5 is fastened by means of the tie rod 18.

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Claims (4)

P.A. 3 7 U2 H 5.7.66 SOmTTZANSPBÜOHB: 1. Keraen-shaped filter element for precoat filters, the one provided with adjacent waves running in or approximately in the circumferential direction Support pipe and a carrier for receiving the precoat material and / or the filtered out residues "consists and with breakthroughs in the wave troughs are attached, thereby marked θ t that the openings in the wave troughs (3) than in the longitudinal direction of the aias thin-walled plastic existing stutial pipe (1) running one behind the other Slots (4) are formed. 2. Filter element according to claim 1, characterized g θ kennte rejects that the plastic pipe on a pressure © the flexural stiff; ^; 1 body, in particular a tube fitted with three or more radial glosses, the outer edges of the glosses resting firmly against the inside of the corrugated tube and the “IP” tube receiving a tie rod. _. 7th 3.! Filter element according to claim 2, characterized in that the outer edges of the Fins are wholly or partially provided with prongs that engage in the waves of the plastic tube and are offset so that the fin tube can be screwed into the corrugated tube. 4.! Filter element naoh one of the preceding claims, characterized in that the sleeve serving as a carrier is made from a porous film strip consists, which is helically wound onto the corrugated pipe. Htnw "ls This document (Bt mtwlbuws -w * Schutecmspr.) 1st most recently elngerelohtei they wetoht of you word . constitutional originally elngsi-ölchten documents from · DIb rschtilche "B $ d <jirtung d" r Abwelohung Is nlaht, jepräfti Dlö ursprünelloh "jlngtHilo;" rvi '. "lt-SR' av ^ fi""find yourself! In tkn Amtakfen. You can see Jetleratelt without paying a fee. On request, FotOkoplon or Film «will also be delivered at zero prices. Doufsghes Patent Office, öeferaughsmueteretellf,