DOUBLE JUMBO VIBRO SEMOLINA SIFTER

Aerodynamic-vacuum, dual independent twin-vibro-motor semolina classification station

A high-performance purification (purifier) unit with two independent sieve bodies stacked one above the other, designed to optimise the footprint of high-capacity lines in modern flour and semolina mills. Precisely classifying semolina particles by size, it fully frees them of light foreign
matter — bran and husk. In semolina mills it secures maximum semolina yield from durum wheat, while in flour mills it is one of the diagram’s most critical control points for obtaining lowash, high-quality, premium-segment flour from soft wheat.

WORKING PRINCIPLE

Twin inlet and aerodynamic distribution — homogeneous feeding onto the sieve cloth: the semolina mass arriving at the stacked two-tier body design is fed from two separate intake hoppers; by the machine’s vibration it is spread as a flawless, even-thickness curtain over the sieve cloth tensioned on the anodised-aluminium frames (sieve boxes) in both bodies. Counterflow vacuuming — finely air-adjusted bran removal: as the product flows over the sieve cloths of the two-tier machine, the independent aspiration channels and precise flaps above engage; on both tiers an even vacuum is created over the whole screen surface, and the light bran and husk particles are sucked upward. Multi-deck fluid grading — classification by dual independent
vibro-motors: the linear vibrations of two high-efficiency vibro-motors in each machine rock the twin body, seated on heavy-duty rubber mounts; semolina sifted through the 2- or 3-deck screens (in the lower and upper bodies) and classified by purity is flawlessly discharged to the relevant passages.

KEY ADVANTAGES

• Space saving via twin compact design. Integrating two sieve bodies one above the other saves 50% of the plant’s installation area while delivering double the purification capacity.
• Low-ash premium production. Isolating semolina particles from bran at the molecular level, it radically lowers the ash content of the finished flour and maximises its colour, brightness and baking quality.
• “Easy-Tension” re-tensionable aluminium sieve boxes. The refined aluminium box design allows the sieve cloths to be removed and replaced when the diagram changes; cloths loosened over time are easily removed and re-tensioned, minimising cloth consumption and preserving maximum sieving efficiency.
• Quiet, dynamic damping systems. The superimposed dynamic loads are damped on special heavy-duty rubber mounts; transmission of the vibro-motors’ forces to the plant floor and building frame is prevented, delivering an extremely quiet, low-wear service life.
• Maximum aperture cleaning. Special cleaning brushes constantly moving beneath the screens keep the sieve-cloth apertures from clogging, providing stable cross-sectional suction 24 hours non-stop.
• Diagram options (Double Jumbo 2K / 3K). Double Jumbo 2K (2+2-deck screens) — twin-linestandard semolina classification and area optimisation for high-capacity flour and semolina lines and plants with limited storey height; Double Jumbo 3K (3+3-deck screens) — ultraprecise grading over a maximum surface area and intensive bran separation for high-capacity semolina mills and low-ash specialty and premium flour processes.

ENGINEERING NOTE

The Vibro Semolina Purifier (Twin — Jumbo) is a flawless synchronisation of aerodynamics and controlled vibration in a two-tier body. The negative pressure distributed evenly to each stacked sieve box forms a floating “fluidised bed” over the screen; through it the heavy clean
semolina sinks and sifts through, while the bran stays on top. This fine aerodynamic balance, over double the sieve surface area, directly doubles flour quality and operating profitability in flour mills.