DE102956C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

PATENT LETTERING

CLASS 6: beer, brandy.

Patented in the German Empire on October 28, 1897.

The effect of the present lees filter differs significantly from known ones Filters of this type, such as those described in the UK patent No. 21022 from 1896 and in German patent specification No. 62995 of class 8 are described. These two filter devices agree that the liquid in the downwardly moved piston through the filter plate provided therein passes through, so that after the end of the clarification process the flask is at the bottom of the filter cylinder is located under the deposited turbidity.

The downward movement of the piston is, however, for operational reasons, namely not recommended because of the difficult cleaning.

The apparatus forming the subject of the invention aims to remedy this inconvenience while maintaining the advantages obtained by the above-mentioned devices will.

As is well known, the filter presses have to be used every time for obvious reasons be subjected to a thorough cleaning, a measure which in particular is essential when using these filters in the brewery. To such a thing To carry out cleaning, one would have to, for example, with the above-mentioned known Filter apparatus first of all of the clarified liquid which is located above the flask and which remains after the end of the work process Scoop out and then remove the flask before cleaning the bottom and the walls of the inside of the container could make from the remaining turbidity. These However, given the size of such apparatus, manipulation is very inconvenient linked and require a considerable amount of time.

In the present apparatus, on the other hand, the piston pushes the clarified liquid almost up to it to the last drop automatically upwards into the drainpipe, so that the Cloudy after removing the container lid or. of the filter cloth without further ado in the simplest way and the most convenient way to remove the firmly pressed filter cake, while at the same time the under the The water in the piston carried out an extremely thorough cleaning of the container wall Has; it will therefore never be necessary to remove the flask and the container after the pressurized water has been released to be subjected to a special cleaning.

The new filter apparatus is shown in the accompanying drawing, and shows

Fig. Ι a vertical section and

Fig. 2 is a bottom view of the cover of the filter plate.

The cylinder A intended to receive the sediment liquid is provided in its center with a smoothly turned rod C, which serves to guide the piston D. The upper part of the cylinder is covered with a filter cloth F , which is used at the same time as the

Cover G is attached to the cylinder by screws. Ribs i arranged on the cover G prevent the filter cloth from being torn by the hydraulic pressure of the upwardly forced liquid. The cock H on the lid serves to drain the clarified liquid, while the three-way cock E provided at the bottom of the cylinder is used to enter the cylinder. serves to return the pressurized water.

The mode of operation of the device is as follows:

After the cover G and the filter cloth F have been removed from the cylinder A , the sludge to be filtered is let into the cylinder, then the filter cloth F and the cover G are attached to the cylinder again and the water under pressure through the three-way tap is now under the pressure at the bottom of the container A. piston D located . As a result, the latter rises upwards and prefers the turbidity above it into the filter cloth F. The cleared liquid, which has been priced out, flows into the spaces between the ribs i towards the outflow nozzle H , while the coarser deposits of the turbidity rise due to their specific gravity the piston and are pressed together like a cake as it goes up. The cakes are removed after the cover G and filter cloth F have been removed without any further difficulty, while the pressurized water has already carried out a thorough cleaning of the inside of the container, so that special cleaning of the filter cylinder is no longer necessary.

If the apparatus is to be used as a yeast washing apparatus, a certain amount of impure yeast is mixed with water and the apparatus is filled with this mixture. The heavy yeast cells settle on the ground more quickly than the light and bad ones, whereby their separation takes place without the use of a filter cloth, in that the piston D is simply moved upwards by the pressurized water until all the light yeast cells floating on top pass through the drain tap H. have drained. The heavy yeast cells have now accumulated on the surface of the piston D and can now be removed with ease after removing the filter cover in a similar way to the filter cake.

When using the apparatus as a yeast press, the thick yeast is let into cylinder A in exactly the same way as the turbidity; the excess water runs through the filter cloth F to the outlet port H , and the yeast forms a firmly pressed cake on the flask at the top of the cylinder.

With the present filter, an inspection from the outside is completely excluded.

Claims (1)

Patent claim: Filtrir apparatus, characterized by a standing filter cloth at the top and Lid closed cylinder, in which a piston moved by pressurized water Cloudy, the yeast or the like, which is to be separated from the liquid, against the Filter cloth prefst, whereby the filtered liquid passes through the cloth, the solid one Backlog is held back by him. For this purpose ι sheet of drawings.