This is a fascinating and highly specific application of metal detection.Vertical Fall Metal Detector for Bulk Materials is a critical piece of equipment for ensuring product purity and protecting downstream machinery in industries processing dry, free-flowing powders.
A vertical fall metal detector is designed to inspect free-flowing bulk powders (e.g., flour, sugar, spices, milk powder, plastics, pharmaceuticals) as they gravity-feed through a pipeline or chute.
Basic Principle:
Product Flow: Powder is fed from a hopper or silo above the detector.
Free-Fall Chamber: The powder enters the top of the detector and falls vertically through an inspection aperture or “aperture tube,” typically made of food-grade plastic.
Detection: The aperture is surrounded by a balanced coil system (one transmitter coil and two receiver coils). The transmitter coil generates a high-frequency electromagnetic field.
Signal Disturbance: Any metallic contaminant (ferrous, non-ferrous, or stainless steel) passing through this field causes a detectable disturbance.
Rejection: Upon detection, the system sends a signal to a rejection mechanism (like a high-speed air blast or diverter valve) to remove the contaminated product from the flow stream.
A Vertical Fall Metal Detector is the optimal and most efficient solution for inspecting bulk powders. Its non-contact, gravity-fed design offers superior hygiene, high sensitivity, and seamless integration into processing lines, providing an essential critical control point for product safety and quality assurance.
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Bulk Materials Vertical Free Fall Metal Detector for Grains Granule
