Volumetric screw feeders control flow by measuring a constant volume over time by changing the speed of the feeding element. In screw feeders, this is the rotational speed of the screw with a guide pin or spiral. Unlike gravimetric feeders, volumetric feeders do not have feedback in the form of a scale. These types of devices are the most economical solution for feeding bulk materials in continuous or batch mode.

The DSL V series volumetric feeder is a universal solution that allows you to dose loose materials with a given feed rate. It can be used to feed materials with different characteristics and grain sizes.

The DSL V feeder can be an autonomous continuous dosing system and part of a portion preparation system. The construction made entirely of stainless steel, polished inside is equipped with a horizontal agitator driven by a separate electric motor. Thanks to this solution the bulk material is constantly moved and evenly fills the feeding tool in the form of a full screw (screw with center rod) or spiral screw (screw without center rod). This applies in particular to hard-flowing materials with a tendency to clumping and bridging. Feedeng tools with different diameter and pitch can be freely changed to increase the feed rate.

Applications:

• bulk materials of various types – both well- and hard-flowing, easily aerated, with a tendency to uncontrolled flow or clumping.

Specification:

• the maximum feed error after the calibration +/- 2..3%,
• horizontal agitator mixing material and filling the screw,
• feed rate from 0,5 to 30 000 [l/h],
• inlet dimensions 250×250 [mm], 350×350 [mm] or 450×400 [mm],
• feeding tools: screw or spiral, size from ∅18 [mm] to ∅152 [mm],
• easy disassembly of the screw and agitator,
• can be placed under the hopper or BIG-BAG emptying station,
• stainless steel 1.4301 (AISI 304) or 1.4404 (AISI316L),
• standard performance of the external surface: blasting with glass granulate, continuous internal welds,
• optional hygienic version, surface as well as welds ground and electropolished.

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