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Aspirators

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GEBR. Ruberg - Aspirators

Series RV and RVS

GEBR-Ruberg-Aspirateure-0028For use in silo systems, storage warehouses, mills, malthouses, breweries and seed preparation systems. The most modern technology is the result of generations of experience.
Use our expertise in the field of preliminary and main cleaning of cereals, oilseeds, leguminous plants, malt, coffee, etc.

11 graduated throughput levels from 40 t/h to 300 t/h are available. Wind sifters and separators can be used in recirculation and exhaust air modes respectively. The numerous  RUBERG  Aspirator versions and options are ideal for integrating into existing and new systems.Fitted with proven sieve combinations, they can reliably clean cereals, rape, leguminous plants, oilseeds, seeds, nuts, coffee, millet, rice, spices and other products.GEBR-Ruberg-Aspirateure-0011

 When sorting products such as malting barley, malt or seeds, clear fractionation is achieved together with high throughput due to especially large sieve areas. We keep a wide range of the various performance categories and also accessories and service available for you.We also deal with the interface to plant engineering and further peripherals for you.

Method of Operation

The product to be cleaned passes through one or more inlet GEBR-Ruberg-Aspirateure-0027pipes into the air part’s large pre-distributor. Together with the feed flap, the polygon effect of the feed roll guides a pre-defined product stream on to the entire width of the machine. The product falls freely over a metal cascade through a rising stream of air. The air volume and speed are set either manually or automatically so that light particles such as dust, spelt, pieces of straw, shrivelled grains etc. are carried upwards by the air stream. In the integrated   expansion chamber the particles drop out again at a lower air speed and are discharged to the side by a screw conveyor. In  recirculation mode, the air is accelerated by internal fans and returned to the vertical air sifter as part of the cycle (see the more detailed description under slider air recirculation mode). In exhaust air mode, particles are fed with the entire air into external filters and separated there. From the vertical air sifter the fruit now falls on to the   sieving decks. It is guided across coarse, grain and sand sieves which are fitted across the entire width of the machine. The product is fed on to the slightly inclined sieves by the circular oscillating movement of the entire sieve deck. The product distributor and guide plates ensure optimum use of the available sieve surface. Up to four fractions can be GEBR-Ruberg-Aspirateure-0036separated in one cycle. The RVS series achieves constantly high cleaning quality performance with optional deflector flaps. Sieves do not have to be changed when changing the fruit from e.g. rape to barley. There is no reduction in throughput due to the option of manual or automatic switching. The additional “Multi” designation indicates that there are further deflector flaps located between the vertical air sifter and the sieve assembly (machine upper and lower part). The product stream is divided again here and guided to the upper and lower sieve decks. By fitting different sieves it is possible to clean different types of fruit without changing the sieves.

 

Design Variations

Air recirculation mode

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This operating mode represents the most commonly used mode for cleaning cereals.
The product to be cleaned enters the large air part’s pre-distr-butor through one or more feed pipes. Together with the dosing flap, the polygon effect of the feed roll guides a pre-defined product stream across the entire width of the machine. The product falls freely over a metal cascade through a rising air stream. The air volume and speed are set either manually or automatically so that light particles such as dust, spelts, pieces of straw, shrivelled grains etc. are carried to the top by the air stream. In the integrated expansion chamber the particles drop out again at low air speed and are discharged to the side by a screw conveyor. In the air recirculation mode the air is accelerated by internal fans and fed back to the vertical air sifter.

Exhaust air mode

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In some areas, increasing environmental influences cause higher concentrations of mycotoxins, remains of toxic metabolism products which may occur especially during warm and humid weather during the period in which rye and wheat bloom. Exhaust air is a reliable means of avoiding recontamination when cleaning such types of fruit. These machines are mainly characterised by the air vent in the vertical air sifter. This allows 100% fresh air to be fed in and the air laden with dust and particles is taken up by an external nozzle filter.
All  RUBERG Aspirators  and vertical outlet sifters can be sup-
plied for exhaust air operation.

 


Air Aspirators

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This type is exclusively used for air-related cleaning work. Infeeds and infeed distributors guide the product into the pre-distributor. The polygon effect of the feed roll together with the feed flap feeds a thin coating over the sheet metal cascade. The product coating is streamed through rising air. Dust and light particles are picked up and carried to the expansion chamber, fed through guide plates. Here, the air speed decreases, large particles drop out and are transported out of the machine at the side by a screw conveyor. Further on, the air reaches the blower separator. Here, dust and fine particles are fed outside and separated into an external nozzle filter with a small amount of exhaust air. The remaining air is re-accelerated by “inline” fans in the blower chamber and fed back into circulation.

RUBERG Air Aspirators. These are driven by either recirculation air or exhaust air and are also available with an extensive range of accessories.

 

Sieve section

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This design is especially suitable for products which have already been pre-cleaned or those which have a low proportion of dust or light particles. The RUBERG Sieve Section stands out especially for its qualitatively and quantitatively good sorting performance. A circular rotating sieve section is suspended by flexible rods within a frame. An infeed funnel fitted to the frame which resonates in harmony with the frame feeds the product on to the sieve deck. The product is fed across the entire width of the machine, for example over coarse grain sieves, grain sieves and sand sieves. The slightly inclined sand sieves are supplied by the circular oscillating movements of the entire sieve stack. The product distributor and guide plates ensure optimum use of the available sieving surface. This means that up to four fractions can be sorted in one cycle.

RUBERG  Sieve Sections  are available in performance classes from 20 t/h to 300 t/h and with an extensive range of accessories.