DE69045C - Filter plate together with the method and device for producing the same - Google Patents

Description

PATEN TAMTNjg

j PATENT LETTERING

CLASS 6: Beer, brandy, wine, vinegar and yeast.

Patented in the German Empire on April 26, 1892.

The present invention relates to filter plates in which the filter material consists of Consists of fibers and in a frame between permeable side walls (wire gauze, Cloths, etc.) is included, and it aims at such filter plates at the same time Adaptation to the nature and quality of the liquid to be filtered in a simpler way Way than since then and at the same time in such a way that they are handled and can be transported without being provided with the permeable sides.

At the end of the fiber material is compressed into a kind of cardboard and in this way in the frame bedded so that the latter is suitably embedded with his straightened the inner edge in the edges of the cardboard I. is stored. In the case of larger panels, the cardboard is also supported by a middle one Stiffened sufficiently permeable metal intermediate layer connected to the frame.

The new filter plate is therefore essentially characterized by its composition a front layer of cardboard-like compressed fiber and an enclosing frame, which with its inner part reaches into the edges of the outer layer.

The method used with preference for the production of the filter plates just identified consists in placing the frame in the middle of its inner edge over the whole of it Gradient with a thinner bar, the frame on both sides with the fiber material in the damp or covered wet conditions and then cream the latter by simultaneously applying cream

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both sides of the frame opening including the said strip directed pressure to the j Compacted cardboard, whereby the bar comes to rest in the mass of the latter. As a result of Simultaneous pressure against both sides of the layer maintains the same over the entire cross-section a uniform density, as well as the same height on both sides of the frame.

Paper stock is preferably used as the material for producing the lining layer. the Permeability will correspond to the nature and quality of the liquid to be filtered regulated either by changing the amount of fiber and the pressure, or by adding of wood pulp for more permeable cardboard (or for preferably quantitative performance with more easily filterable liquids) respectively. of ground asbestos for thick cardboard (resp. for preferably qualitative performance with liquids that are difficult to filter).

A press suitable for carrying out the above method will be described later.

In the accompanying drawings, FIGS. 1 to 6 illustrate several embodiments the new filter plate.

F means the filter plate frame, f its inner edge designed as a strip and F ¹ the fibrous material compacted to cardboard.

In Fig. Ι a small plate (adapted to the shape after use in the Enzing e r'schen filter press) without a stiffening intermediate layer; as can be seen from the cross section, penetrates the bar f all sides into the edges of the cardboard-like Fütrirschicht: its width is such, that they "unifying support layer granted to the board without covering with the permeable side walls safely handle and trans-

to be able to portray. In the other figures, larger plates with internal stiffening are assumed. The same may consist of a bar cross, f ¹ Fig. 2, a system like a grid of intersecting rods f ^2, Fig. 3, a coarse-perforated metal sheet f ^'6, Fig. 4, a coarse slotted plate f ^4, Fig. 5, a wide-meshed Wire gauze y ⁵ , Fig. 6, or similar structures exist. The rods f ^1/2 are connected to the frame and in turn provided with the f block; the other structures are connected respectively to the strips f. form the continuation of the same.

A press set up for the production of the marked filter plates is shown in FIG Vertical section according to 7-10, Fig. 8, with the upper pressure plate D, Fig. 8 im horizontal section according to 8-8, Fig. 10, Fig. 9 with respect to the upper part in side view and with respect to the lower part in the vertical section, as well as with the set upper part Pressure plate and in Fig. 10 in the vertical section according to 7-10, Fig. 8, with the upper Pressure plate shown in the lower end position.

The distinguishing feature of this press is that the filter plate frame F rests on a vertically movable support frame between a lower, fixed counter pressure plate and an upper movable pressure plate, which two plates are set up to allow the priced liquid to flow off and are designed to correspond to the filter plate frame opening pressure exerted by the top plate counteracted, whereby the moist filter material (paper stock) located between the two plates also experiences pressure from below, forming a cardboard-like layer of uniform density over the entire cross-section and without the bearing strips f or. the stiffening liner suffers deflection.

The illustration is based on the filter plate in FIG. 1.

The counter-pressure plate G rests on the bottom a of the box A, pierced by drainage holes a ^1, its lower part forms a cavity g ³ , which is in free communication at the bottom with the bottom holes a ¹ and at the top with numerous channels g arranged in the solid upper part; Holes g ^l emanating from the latter break through the upper side of the plate, which is covered with a fine wire screen g . The plate G is tightly enclosed by a loose frame T of the same height, which is supported by tabs f ¹ on helical springs t ~ and at the same time is guided on the vertical rods t ^{3 holding the latter.} When the upper pressure plate D is lifted, this frame is held in the upper position by the springs (FIGS. 7 and 9). It forms the "support" for the filter plate frame F. In order to achieve a tight seal between the two parts, the support frame T is provided on the upper inner edge with an upright edge t which is narrow in relation to the width of the filter plate frame strip. The space for filling in the paper stock is made by placing a box-like bottomless vessel E on the filter plate frame F. Here, too, the tightest possible seal between the two pieces is achieved by an edge e protruding downward from the box E. The walls of the filling box are pierced by numerous holes e ¹ for the liquid to drain off The pressure plate D hangs loosely on the lower end of a screw spindle d ³ , which has its nut in the bracket d ^s and is screwed down and back by means of KugelbalanciersJ ^4. The bracket d ⁵ can be rotated about the pin d ^e , so that the pressure plate D from Filling box turned away (position Fig. 7) bezλv. Adjusted via the same (position Fig. 9) w can earth. To fix the bracket in the latter position, a plate d ^{8 is} attached to the box A by means of hinge d ⁹ , which in the unfolded position lies around the bracket end with a slot d ^1. The pressure plate D is set up, similar to the counter pressure plate G, to allow the squeezed-out liquid to pass through, in that its upper side is formed into grooves d, from which holes d ^{1 go} to the inside covered with fine wire mesh d ^2. The press rests on a table 5 with drain s for the liquid emerging from the box.

To manufacture the filter plate, the empty filter plate frame F is placed on the support frame T and the filling box E is placed on the former. After the paper stock has been filled in, the bracket d ⁵ is swung from the position in FIG. 7 to that of FIG. 9, it is ^{fixed in the latter by means of the slotted plate d%} and the pressure plate D in the box E is lowered by turning the screw spindle d ^s on the paper stock, which as a result of the ^{counter-pressure generated by the resistance of the springs £ 2} from both sides into the opening of the filter plate frame respectively. f is geprefst against its side, and the water content mainly to the one part through the holes g ^l and to the other part through the holes d ¹ and e ¹ emerges and passes through the box bottom holes for a ^l Abflufs s. With increasing compression of the paper stock, the support frame T gradually yields; when he finally sits down on the floor λ, with his upper edge being at the same height as the screen of the counter-pressure plate, the paper stock is compressed into cardboard of the same height on both sides of the bar. This is the filter plate

done, which is done by screwing up as well as swinging away the pressure plate and lifting off of the filling box exposes for removal:

The filter plates can be used immediately after manufacture. If their filtering capacity is exhausted, the filter layers are pushed out of the frame out, shred it by a mechanical device under running water simultaneous introduction of steam and thus effects cleaning and sterilization at the same time of the fibrous material, which is then used again for the production of filter plates.

Claims (3)

Patent Claims: ι. A filter plate, composed of a filter layer (F ¹ ) made of cardboard-like compressed fibrous material and an enclosing frame (F), the inner part of which is embedded in the edges of the filter layer, and in the case of larger plates the filter layer also has an inner part with the frame interior coherent stiffening is provided. 2. A process for the production of the under i. marked filter plates, consisting in that one surrounds the frame (F) on the side of its opening including the inner part with moist fiber and then compresses this by simultaneously exerting pressure on both sides to form a cardboard that accommodates the said inner part. 3. A press for carrying out the process identified under 2., in which between a movable pressure plate (D) and a fixed counter-pressure plate (G) a frame (F) loosely enclosing the latter and supported by springs (t ² J) for placing the filter plate frame ( F) and this is used to support a box (E) which is used to fill the pulp (FIGS. 7 to 10). For this purpose 2 sheets of drawings.