DE57771C - Filtrir apparatus with movable sieve insert - Google Patents

Description

IMPERIAL

PATENT OFFICE.

When using the usual Filtrirapparate for beer and other liquids has been observed by the inventor that the liquid to be filtered tends to become in to clear the shortest path to the filter material (cellulose, paper pulp, etc.) and to do so adhere to by the sieve openings. on one side of the filter to the opposite To get sieve openings. This results in the filter material in a short time Time, fine channels through which the liquid flows steadily, so that the intended Purpose (clarification, sterilization) is then no longer fully achieved.

To prevent the liquid to be filtered always going the same way from the sieve hole increases sieve hole, one or more of the applied is according to the present invention Filter sieves, on which the filter material is stored or held, during filtering set in motion transversely to the flow of liquid, which can be effected by mechanical means or automatically.

A very slight movement is enough to keep the liquid flowing distract. "It is best to make the filter screen move back and forth a little, which is to be regarded as one of the possible embodiments in the case of the one shown in the drawing Apparatus has been achieved without any external aid.

The cone-shaped outer shell a. the apparatus is provided with a cover a ¹ sealed by an eccentric connector and a rubber ring and with a base d ¹ ; the latter. takes the cock a ^& for the entry of the one to be filtered. Liquid on.

Inside this closed vessel there are two fixed filter inserts b and c. Centrally through the housing and the inserts b and c is the tube d , which passes loosely and movably through the base and cover. A third filter element e is firmly connected to this tube d , as well as a hollow vessel f with connecting tubes f ¹ , the latter for the purpose of filling up the largest part of the space within e , in order to avoid dead space. The tube d is guided into the bushing α ⁴ on the cover a ^l , a spring rf ¹ lies against a collar d ^{2 of} the tube d and against the bottom of the lock nut α ⁵ .

The lower end of the tube d extends freely into the discharge nozzle g and rests on an elastic rubber ring g ¹ , which rests on lugs g ^2. Above and below the hollow vessel / the pipe d also has drainage holes d ³ and d *. G with the connecting piece is the Abflufsschlauch g to bring by a hose connection in conjunction. ³ A sight glass h is connected to the inside of the tube d by means of a rubber hose h ^1.

The filter cartridges, of which two sets belong to one device, so that one set can be cleaned and filled while the other is working, are filled with filter material on the outside of the device. poured out after lids b ¹ and c ^{l have been} removed.

After the inserts have been inserted into the housing, cover b ¹ in.b is inserted and weighted with ring weights to compress the filter material. In order to force the filter mass when pouring in to properly fill the floor space between c and e , the floor e ^{1 is} curved from e so that the paper mass can easily flow into the arch. In addition, the bottom e ¹ is not designed as a sieve, but rather full, which means that the liquid to be filtered does not get from a ^s to d ⁱ by the shortest route. The cover e ^{2 of} the insert e is also chosen to be the most expedient in its entirety.

The liquid (beer) entering through a ³ fills the vessel a, penetrates through the pre-filter located between b and c and then through the post-filter located between c and e into the inner space of e. From here the filtrate passes through openings d ³ d * and pipes f ¹ to pipe d , from where it then flows off through g and g ³ .

It is immediately evident that the inflow and outflow of the liquid to be filtered can only take place under pressure fluctuations, which will be accidental and then also result from the drop in the liquid level of the barrel to be withdrawn or from the operation of the air compression pump, if that Filtration is carried out using one. These pressure fluctuations are completely sufficient to give the filter element e an impulse to move so that it will play back and forth, which process is supported by the influence of the spring d ^y and the rubber buffer g ^l as soon as the former is screwed down by screwing down the nut a ^s is more or less excited. In this way it is achieved by the present apparatus, without external aids, that the sieve surface e does not stand still, but is always moved up and down, albeit to a small extent. The liquid flowing transversely to this direction of movement is thereby forced to always make zigzag paths in order to find a sieve opening to exit, whereby the formation of fine channels in the filter layer is avoided. You could filter the e impart a rotating or oscillating movement which may be combinirt with ascending and descending movement. The main thing, however, is that in this apparatus and in all other apparatuses, one or the other sieve surface is given a movement which does not fall in the direction of movement of the liquid to be filtered.

Claims (2)

Patent Claims: ι. A Filtrirapparat, in which the formation of fine channels as a result of the passage of the to filtering liquid through the filter layer lying between the sieve surfaces it is made impossible that at least one of the sieves is transverse during the filtration is moved to the liquid flow. 2. An embodiment of the under i. called Filtrirapparates, in which the liquid to be filtered flows in a horizontal direction from the outside to the inside through concentrically arranged filter bodies, the sieve-like internal filter (e) is connected to a drain pipe (d) which is flexible at both ends (by spring d ¹ and rubber ring g ^l ) is held. For this purpose ι sheet of drawings.