DE1092719B - Ventilation and drainage devices for forage silos - Google Patents

Description

The invention relates to a ventilation and drainage device for fermentation feed silos, which are shown in their various previously known embodiments each separate one of the following features exhibit:

They consist of at least one column that penetrates the silo and is designed so that the excreted air and the excreted fermentation gases and juices rise or flow off the same can, wherein the column is hollow, so forms a tube that has holes in its jacket, next to which the outer surface of the tube at least on one side projections to protect against contact of the pressed material are provided at the mouth of the hole and thus against clogging.

According to the invention, the risk of clogging is particularly simple without moving Parts avoided in that the projections are arranged at least above the holes close to them are. The invention is based on the knowledge that the material to be pressed moves downwards and that in the arrangement of the projections, at least above the holes close to them such a Preßgutbewegung no clogging can take place. This design and arrangement of the Projections can be achieved, for example, in a particularly simple manner that the shape of the outer surface of the Column corresponds to that of truncated cones placed on top of one another and the holes are each as possible are located close to the largest base edge of the truncated cones, these base edges being the Form protective protrusions.

It is recommended that the columns consist of several joinable parts and that the Column stands on a base that has drainage openings. The top end of the column can be pointed Be formed bolts.

In the drawing, an embodiment of the subject matter of the invention is shown schematically. It shows in perspective a partially open fermentation silo with a water press as the upper one Termination and a venting and drainage device which is designed according to the invention.

In this drawing, 1 denotes the fermentation silo, 2 the water press forming the upper silo closure and 3 the filled feed to be fermented.

As can be seen, a hollow column of sections 4 a to 4 d is arranged in the center of the silo, of which the middle ones are shown in section, around which the feed lies. Holes 5, 5a are made in the wall at certain distances from one another, and so that these holes cannot be clogged by the material to be pressed, the outer surface

Ventilation and drainage devices
for fermentation silos

Applicant:

Fritz Kneubühl,

Weiningen, Thurgau (Switzerland)

Representative: Dr.-Ing. W. Höger, Dr.-Ing. E. Maier

and Dipl.-Ing. M. Sc. W. Stellrecht, patent attorneys,

Stuttgart, Uhlandstr. 16

Claimed priority:
Switzerland from August 31, 1966

Fritz Kneubühl, Weiningen, Thurgau (Switzerland),
has been named as the inventor

of the column in the form of frustoconical, superimposed elements. The holes 5, 5a are in each case as close as possible below the largest base of the truncated cones, which such protrusions over the holes to protect them from clogging. You can see that the column consists of parts 4 a to 4 ei screwed together by thread 6, of which 4 a " on a base 7 rests, the channels 8 has for the drainage of the juices, while the uppermost part 4a protrudes through a nozzle 10 of the water press 2 to the outside to allow the fermentation gases to escape, and is also crowned by a pointed bolt 9.

The ventilation and drainage device designed in this way enables the fermentation silos equipped with it to be filled up with feed at intervals. The latter are expediently slightly wilted before filling and compressed after filling, for example by a water press 2 , with the air, fermentation gases and juices being able to escape unhindered thanks to the ventilation column as the compression progresses.

Claims (5)

Patent claims: 1. Ventilation and drainage device for fermentation silos, consisting of at least one den Column extending through the silo content, which is designed in such a way that the excreted air and the excreted 009 647/147 separated fermentation gases and juices can rise or flow off at the same, with the Column is hollow, so forms a tube that has holes in its jacket, next to those on the outer surface of the tube at least on one side projections to protect against contact with the pressed material are provided at the mouth of the hole and thus against clogging, characterized in that that the projections are arranged close to them at least above the holes. 2. Ventilation and drainage device for fermentation feed silos according to claim 1, characterized in that that the shape of the outer surface of the column is that of truncated cones placed on top of one another corresponds and the holes (5, 5 a) are each as close as possible below the largest Base edge of the truncated cones are located, these base edges forming the protective protrusions. 3. Ventilation and drainage device according to claim 1, characterized in that the column consists of several joinable parts (4 α to 4rf). 4. Ventilation and drainage device according to claim 1, characterized in that the Column stands on a base (7) which has drainage openings (8). 5. Ventilation and drainage device according to claim 1, characterized in that the the upper end of the column is a pointed bolt (9). Considered publications:
German Patent No. 885 170;
Swiss patents No. 112 160,
301;
British Patent No. 235 668. 1 sheet of drawings