DE511602C - Device for separating the parts of mixtures, in particular of seeds - Google Patents

Description

Device for separating the parts of batches, in particular of seeds The invention relates to a device for separating the parts of batches, z. B. seeds, according to the specific weight by means of different levels of adjustable Lift currents (suction or compressed air). In known devices of this type in the first weaker air flow the specifically lighter impurities, for seeds B. dust, chaff o-. like., eliminated, while in the second stronger Air flow separates the already pre-cleaned material from the heavier additions, Stones etc. takes place.

That in the first, ascending in a so-called vertical sifter canal Air flow of pre-cleaned material passes through a side opening of this channel into the top of a second downwardly extending channel in which the second stronger air flow rises.

The material hits against a baffle plate opposite the outlet opening of the first channel. As a result, the good is stopped for a moment at its falling speed, i.e. H. Received floating so that the parts of different specific gravity can separate. The heavier parts fall down against the air flow, the lighter parts are lifted slightly by the rising air flow, but then reverse their direction of movement and fall against the rising air flow into an outlet. In the device according to the invention, on the other hand, the material which has been cleaned of the heavier constituents is carried along by the air flow rising vertically upwards in a conveyor channel, conveyed up and then fed through a natural gradient to a sifter, seed separator or the like.

With the device according to the invention can convey the material is so high that even a waste bag of the sighted good is possible under the classifier or Sarnenausleser (Trienr) without the use of an elevator. A sharp change in the direction of movement of the goods due to baffle plates, containment sieves or the like, which have a disruptive effect, is omitted here. The device also enables complete cleaning of the goods without sieves.

In the drawing, a device according to the invention is in one Embodiment shown.

Fig. I shows the device in a longitudinal section along the line CD in Fig. 3. Fig. 2 is a section along the line AB in Fig. 3, Fig. 3 is a vertical section along the line EF in Fig. I.

Fig. 4 is a horizontal section along the line GH in Fig. I and Fig. 5 is a horizontal section along the line IK in Fig. 2.

In the example shown, the items to be cleaned in a hopper A pass over the grooved feed roller B in a uniformly wide veil through the opening C into a vertical sifter channel D, which is a blind channel X on both sides (Fig. 2). In the vertical sifter channel D , the good, z. B. Grain, first captured by the air stream flowing into the vertical sifter channel D at E below the pouring hopper, freed from dust, chaff and light additions that make their way upward in channel D , as indicated by arrows.

Following this cleaning process, the items to be cleaned pass through the opening F into a second ascending sifter duct D ', in which the same cleaning process takes place as in duct D , but here the suction air enters at G on both sides of duct DI-. The air flows in the two separator ducts D and D 'can be regulated with respect to one another by means of a throttle valve H. The light additions sucked off in the two sifter channels reach a separation room I, which is closed off from false air by folding fingers. This vacuum space is connected to a suction fan K through adjustable, horizontally arranged sheet metal flaps L, whereby the suction air flow can be regulated as desired, which is then repelled by the exhaustor into the open air or into the dust collector after the suction has been carried out. The wind outlet separated in the negative pressure space J can be sacked at the bag nozzle MI-.

The so thoroughly pre-cleaned grain makes its way over the two slopes N through the channel openings 0, which can be adjusted by slide P, into the conveyor channel Q and from here into the storage room R, with heavy additions such as stones, nails and rubble, are not carried away by the flow, but fall below the feed channel at S and can be removed here. Due to a natural gradient, the goods are transported via a cellular wheel T into a high-performance stieur and then into the sieve sorter. The cellular wheel T prevents unwanted air from getting in during the conveying process. The conveying air is also generated by the same Exbaustor. With the two vertical flaps U , the air flow rate can be regulated within the broadest limits.

After the grain has been freed of wheels, vetches and half-grains in the seed separator and sifted according to size in the sighting cylinder, the corresponding types of seed can be bagged at the bagging nozzle M ', M3 ...

In the example shown, two vertical sifter channels D and D 'are provided. However, depending on the requirements, only one or more than two vertical sifter channels can be provided.

Claims (1)

PATENT CLAIM: Device for separating the parts of batches, in particular of seeds, according to the specific weight by means of differently strong, controllable air currents rising in channels, characterized by one or more ascending sifter channels (D, D ') through which the weaker air flow flows in a known manner Separation of the specifically lighter components and a conveying channel (Q), in which the pre-cleaned material entering at the bottom, completely cleaned by falling out of the heavier components, is carried along by the stronger air flow rising vertically upwards in the channel and in the direction of the air flow to the cleaned material Seed separators (trieurs), which separate the varieties and grain size, are highly promoted.