In multi-component batching production, the primary cause of inaccurate dosing is not algorithms or control logic, but the mismatch between the physical properties of diverse materials and a single universal metering hardware configuration. To address this, Sihyde adopts an architecture of parallel, segmented multi-metering units—abandoning the practice of relying on one weighing scale for all materials—to systematically eliminate fundamental metering errors at the hardware level.
1. Granular & Medium-Small Particle Raw Materials (e.g., grain, plastic pellets, ore, granular additives)
Solution: Loss-in-weight feeder + buffer silo
Working Principle: The entire silo is weighed to track real‑time material consumption. Closed‑loop control adjusts the discharge speed of screw or belt conveyors to enable continuous dynamic dosing.
Performance: Supports simultaneous batching of 2–20 granular materials, with steady‑state metering error controlled within ±0.5%.
Advantages: Fundamentally resolves major drawbacks of belt scales, including large static deviation, overshoot during material feeding, and uneven discharge caused by material bridging.
2. Ultra‑Fine & Dust‑Prone Powders (e.g., calcium carbonate, carbon black, flour, industrial chemical powders)
Solution: Micro loss‑in‑weight screw feeder + sealed negative‑pressure dust extraction + vibration‑based arch breaking
Core challenges for powder materials: bridging, moisture‑induced caking, dust loss, and electrostatic wall adhesion.
Supporting features:
Pneumatic vibrators, fluidization air cushions and anti‑stick liners installed on silos to ensure smooth discharge;
A negative‑pressure recovery system that captures fugitive dust and reintegrates it into the total metering calculation, preventing low mixing ratios due to material loss.
3. Bulk Main Raw Materials (e.g., sand & stone, feed corn, resin masterbatch)
Solution: Batch static cumulative hopper scale
Control strategy: Two‑speed feeding (coarse + fine). Approximately 90% of the target weight is discharged rapidly first, then low‑speed jog feeding supplements the remaining amount to effectively avoid overshoot errors.
Applicable scenarios: Intermittent batch batching; separate independent weighing for multiple bulk materials with low single‑batch deviation.
4. Liquids & Viscous Pastes (e.g., grease, adhesive, additives, syrup)
Solution: Electromagnetic flowmeter / gear metering pump + secondary weighing calibration (dual verification)
Low‑viscosity liquids: Continuous dosing via electromagnetic flowmeter;
High‑viscosity pastes: Volumetric metering pump.
Key optimizations:A weighing tank is installed at the outlet to secondarily calibrate volumetric output, offsetting deviations triggered by temperature and viscosity fluctuations;
Heat‑traced pipelines prevent solidification, pipe blockage and material interruption.
5. Micro Additives (e.g., color masterbatch, catalyst, flavor & fragrance)
Solution: Dedicated micro loss‑in‑weight feeder. Low‑speed uniform discharge via micro screw, matched with buffer hoppers to eliminate pulsed feeding.
Effect: Stable linear discharge at ultra‑low dosages, eliminating batch scrap caused by over‑dosing or missing dosing.
6. Core Layout Logic of Multi‑Material Metering Hardware
Zoned layout: Physical separation of bulk material zone, powder zone, liquid zone and micro‑additive zone; independent metering units without mutual interference.
Modular design: Flexible addition or removal of metering silos, supporting scalable expansion for 5–50 material types.
Isolated conveying: Independent pipelines and screw passages to avoid cross‑contamination and strictly preserve formula purity.
Conclusion
Hardware selection matched with material characteristics forms the first line of defense for precise batching. Sihyde’s metering system follows the design principle of specialized scales for specific materials, independent zoned layout and dynamic closed‑loop control—eliminating error sources at the origin. It delivers verifiable and traceable dosing assurance for every production line. Contact us anytime for technical details and customized solutions.
