FI56812C - FOERDELARE FOER EN MATERIALBLANDNING - Google Patents

Description

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[Β] (11) UTLÄGGN I NGSSKRIFT 568 ί 2 C (45) patent cyonnc fcty 10: 4 1930

Patent Oc? Ddelat T (51) Kv.lk. * / Lnt.CI. * B 65 G 69 / 04- A 01 K 5/00 SUOMI-FINLAND CM) Patent application - PatentanaAknlnf 301/74 (22) HakemlspilvJ - Antöknlngtdag 0 02/04/74

(23) AlkupUvft - Glltighetsdag 04.02.7U

(41) Become Public - BlivIt offentllg 08.09.7U

National Board of Patents and Registration U1, a ,,,. . .....

'(44) Date of dispatch and of issue of the hearing. -

Patent and registration authorities '' Ansttkan utlagd och utl.skriften publicerad 31.12.79 (32) (33) (31) Pyydetty etuoikeus —Begird prloritet 07.03.73

Sweden-Sverige (SE) 7303230-2 (71) Alfa-Laval Aktiebolag, Postfack, S-1U7 00 Tumba, Sweden-Sverige (SE) (72) Erik Lindskog, Klippan, Per Axel Ohlsson, Bromölla, Sweden-Sverige (SE) ) (7U) Berggren Oy Ab (54) Material mixer - Fördelare för en materialblandning

The present invention relates to a dispensing device provided with a supply line for granular or powdered material and set to open at the top of a silo for the uniform distribution of a mixture of ingredients, such as a compound feed, in the silo.

The feed dispenser comprises a device which can be attached to the feed silo and which serves to distribute the feed mixture homogeneously throughout the silo when the silo is filled with the feed mixture.

One of the most difficult tasks to solve, from the preparation of the feed to the feeding of the animals by means of the feed, is to maintain good homogeneity of the compound feed and thus prevent the separation of the various components of the compound feed, which is particularly prone to silage filling. The tendency to separate is mainly influenced by the quality of the feed and the way the silo is filled. For example, the feed may be a crushed or ground mixture of cereals, soybean cake, rapeseed, etc.

Until now, the so-called medium-filling. This takes place via a central vertical tube, the feed then forming a cone in the middle of the silo, the tip of which points upwards. This method causes the feed to slide towards the walls of the silo, whereby the various components of the feed are physically separated.

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Tests performed, e.g. At the Ultuna Agricultural Engineering Institute in Uppsala, show that the current method of filling silos causes considerable segregation of feed. If the feed then contains ingredients of very different specific gravity or size, this separation systematically affects the composition of the feed, which has the necessary adverse effects when the feed is removed from the silo.

The present dispenser is intended to avoid these disadvantages and is characterized by a space with inlets for the mixture and a plurality of fixed outlets opening mainly vertically to the top of one and the same silo and a space-adjustable damper to distribute the mixture so that it is simultaneously and evenly distributed.

The improved homogeneity of the material mixture in the silo is achieved by placing a constriction piece in each outlet, which preferably expands downwards. It is then advantageous to give the constriction body a vertical sectional shape containing an inverted V, and it can be formed as a conical body which is placed centrally in the feeder or as a ridge extending across the feeder, dividing this cross-section in the middle.

The invention will be described in more detail below with reference to the accompanying drawing, which shows an embodiment of the present invention selected by way of example. In the drawing, Fig. 1 shows a side view of the silo with this wall partially cut away and the feed distributor placed in the silo, Fig. 2 shows a section along the line II-II in Fig. 1 and on a larger scale a section taken along the line III-III in Fig. 1.

In Figure 1, the number 1 denotes a silo supported by a base 2. A feed distributor 3 is placed above the silo 1, into which a line 4 opens, along which the feed mixture is blown into the feed distributor. The distributor 3 comprises a damper chamber 5 in which a damper 6 is placed about a horizontal axis pivoting at its lower end, thus being adjustable. The damper 6 divides the chamber 5 into two receiving chambers A and B. The lower part of the damper chamber contains four distribution boxes 7 »which open through the openings 8 to the upper part of the silo.

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Figures 2 and 3 show a damper 9 fixedly placed in each opening 8, comprising two plates arranged at an angle to each other, which in turn form a ridge which extends transversely over the corresponding opening and divides it in half. By means of the screw 10 running across the opening 8, the damper 9 can be locked in the desired position.

Instead of the damper 9, a conical body can be used, which is placed centrally in the opening 8 with the tip turned outwards. The feed mixture then leaves the opening 8 in the form of a ring.

The device shown in the figure works as follows:

The feed mixture is blown by means of a fan through the line 9 into the tin chamber 5 · Here the feed mixture is divided into two equal parts by means of a damper 6, which is installed for this purpose in a corresponding manner. Depending on the characteristics of the feed mixture and the required slope of the transfer air flow direction, the damper is set differently. Due to the even distribution of the feed mixture caused by the damper, chamber A receives the first half and chamber B the second half of the feed mixture. In this way, the distribution boxes 7 each receive a quarter of the feed mixture. Finally, the feed mixture flows out of the openings 9 with eight identical parts. This successive distribution of the feed mixture achieves an even distribution of the feed mixture over the entire cross-sectional area of the silo that is acceptable for practical needs.

The following table shows the sample weights from a number of samples taken during the emptying of the silo with the silo filled with the dispenser of the present invention. The studies were carried out over a period of 31 days and the samples have since been examined at the Ultuna Institute of Agricultural Technology, Uppsala.

Day Weight (volume 2000 cm ^) Day Weight (volume 2000 cm · - *) 1 865 g 16 895 g 2 850 "17 885" 3 850 11 18 890 "4 915" 19 885 "5 915" 20 875 "6 910 "21 885" 7 910 "22 885" 8 910 "23 880" 9 910 "29 870" 10 910 "25 870" 11 905 "26 860" 12 880 "27 870" 13 900 "28 870" 19 905 "29 870 "15 900" 30 870 "31 870"