DE1536870A1 - Filter press - Google Patents

Description

Polysius Gr * m.b.H ,, Neubeckum

Filter press

Lie invention relates to a FiIterpresse, "consisting of a plurality of adjacently arranged filter plates whose broad sides are covered by filter cloths ^ limit the existing between adjacent filter plates filter chambers, wherein slots are provided on dien wide sides of the filter plates near the Handes, in which the Fesbiegung the edges of the filter cloths as well as for the simultaneous sealing of the filter chambers to the outside serving, elastic seals can be used in such a way that the filter cloth edge is clamped between the seal and the groove wall and the outer end face of the seal in the non-closed state of the filter press somewhat opposite the plane of the Receiving the closing pressure serving end face of the filter plate protrudes.

In an older filter press, the grooves intended to accommodate the sealing elements have a rectangular profile or a transverse profile that widens towards the outside. The determination of the dieiifcungaolement © in these hats is carried out by means of the longitudinal direction of the retractable retaining rods, BAD ORJQINAL 90988 7/0 64 8

The invention is based on the task of fixing a filter press of the type mentioned at the outset the sealing elements (and the filter cloth edges held by them) in the grooves of the circuit boards to simplify.

This object is achieved according to the invention in that the hats have a swallowtail cross-section.

The dimensions of the grooves and the sealing elements are chosen so that the filter cloth and the sealing element just comfortable (taking advantage of the elastic deformability of the sealing element) in put the hat in place. In the inserted state, the outer end face of the sealing element is opposite the broad side of the filter plate slightly in front, so that when the filter press is closed, the sealing element is pushed even further into the hat, whereby a extremely safe spamming of the filter cloth as well as good sealing of the filter chamber results,

Some Ausführungebeispiele the invention are in the drawing ver.anaehaulieht _a Is ζ own:

Fig . 1 Attention to a filter according to the invention

flat & i

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Pig «, 2 a section through the filter plate along the Line II-II of the

Fig _t 3 a section through a further embodiment of a filter plate according to the invention;

Fig. "4 to 6 cross-sections through different sealing elements"

In the embodiment shown in Figures 1 and 2, the filter plate 2 contains the in detail not illustrated filter press on its two broad sides near the outer edge each a Mt 1 » which has a "dovetail" profile. The filter cloth is with its outer end 3 'around a sealing element 4 looped, inserted into the hat 1 and by means of a second sealing element 5 is held in the groove. The sealing element 4 has a trapezoidal shape and the sealing element 5 has a parallelogram-shaped cross section.

The dimensions of the sealing element 5 are chosen so that its outer surface 6 protrudes beyond the broad side 7 of the filter plate 2 in the non-deformed state. If the adjacent filter plates 2 _t 2a are pressed against one another when the filter press is closed, the with

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their outer surfaces 6 pressed together sealing elements 5 and 5a, ao that the outer surface reaches the plane of the broad side 7a of the adjacent filter plate 2a. By compressing the sealing elements 5, the pressure with which the filter cloths 3 _f 3a are set in the grooves 1 is increased, eo that there is a completely slip-free clamping of the filter cloths.

The closing pressure that acts in the axial direction of the filter press and holds the individual filter plates together is transmitted via the part of the broad sides 7,7a of the filter plates lying outside the grooves 1, these are supported when the filter press is closed directly from each other

The inner hand 8 of the groove 1 is set back slightly from the plane of the broad side 7, so that on the in two positions around this inner edge 8 umgre if end filter cloth 3 even when the filter press is closed no pressure is applied.

In the further exemplary embodiment of the invention shown in FIG. 3, the filter cloth 3 is fixed in the groove 1, which is also designed with a trapezoidal cross section, by a single "elastic" sealing element 9. This sealing element 9 can not τθγ- 9098 * 7/0648

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formed state have a circular cross-section (see Fig. 4) or have one of the cross-sectional shapes illustrated in the Pig "5 and 6" In spring cases, the sealing element 9 adapts itself somewhat to the dovetail shape of this groove when it is pressed into the groove 1, whereby also here the dimensions are chosen so that when the filter press is not closed, the sealing element 9 protrudes slightly over the broad side 7 »

In this embodiment, too, the filter cloth 3 is firmly clamped in the groove 1 so that it is not sucked out of the hat 1, especially when the filter press is emptied, when the filter cake falling off the filter cloth 3 exerts a strong pull on the filter cloth The shape of the sealing element makes it easier to insert into the hat 1 «

If a sealing element 9 with a circular cross-section is used, then after the sealing element has been inserted into the hat, the outer surface of the sealing element can optionally be cut off or flattened somewhat (so that the cross-section shape according to FIG. 5 results). In this way, the thickness of the sealing element 9 protruding beyond the broad side 7 of the filter plate 2 can be brought exactly to the value that still applies when the filter press is closed, in which the broad sides 7, 7 a of adjacent filter plates 2, 2 a come to rest against one another '

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a perfect deformation of the sealing elementB * •• older Filling of the spaces left free in the groove 1 is permitted.

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Claims (4)

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Claims 1 ₀ ) Filter press, consisting of several filter plates arranged next to one another, the broad sides of which are covered by filter cloths that delimit the filter chambers that are present in Syrian neighboring filter plates, with hats being provided on the broad sides of the filter plates near the edge, in which to define the edges of the Filter cloths and elastic seals serving to simultaneously seal the filter chambers to the outside can be used in such a way that the edge of the filter cloth is clamped between the seal and the groove wall and the outer end face of the seal when the filter press is not closed is somewhat opposite the plane of the one used to absorb the closing pressure The end face of the filter plate protrudes, characterized in that the grooves (1) have a cross-section in the shape of a dovetail. 2.) Filter press according to claim 1, characterized in that to fix each filter cloth (3) apart from the sealing element protruding when the filter press is not closed (5) with an approximately parallelogram-shaped cross-section a further sealing element wrapped around by the filter cloth (4 ·) is provided as a trapezoidal one Cross-section and has a height which is smaller than the depth of the groove. BAD ORIGINAL 909887/06 4 8 3.) Filter press according to claim 1, characterized in that to define each filter cloth (3), a single sealing element (9) is provided with a bead-like cross-section. 4.) Filter press according to claim 3 »characterized in that the protruding surface of the sealing element (9) when the filter press is not closed is flattened '(Fig. 5). 909887/0648 BM Empty soap