Vibrating Sand Feeder — Bin/Hopper Feeder

A vibrating sand feeder is a vibrating bin that stockpiles processed sand, chippings and aggregate off the ground in a 25-100 m³ hopper and feeds it to a conveyor, screen or truck at a steady, dosed rate. It accepts up to 200 mm feed and ensures uninterrupted flow at wash-and-screen outlets and concrete-plant aggregate lines. A vibrating sand feeder (bin feeder) is a vibrating feed unit that stockpiles processed fine-to-medium material such as sand, chippings and aggregate off the ground in a bin and discharges it to a conveyor, screen or truck at a steady, dosed rate. Unlike a rock feeder, it is built not for crushing run-of-mine rock but for stockpiling clean, processed material and controlling its discharge. How it works The bin is charged by truck, wheel loader or conveyor belt. The vibrating trough underneath is driven by a vibromotor or a belt-and-pulley eccentric mechanism and lets material flow out at a controlled rate. Vibration amplitude and frequency set the flow speed; short stroke and high frequency suit fine material. Off-ground loading prevents contamination and material loss, keeping the product clean. Role in the plant The unit acts as an intermediate or final-stage storage and steady-feed point: it doses washed sand, screened aggregate or finished product onto a conveyor or into a truck. As a concrete-plant aggregate bin, a wash-plant outlet and on stockpiling lines it serves as a buffer, ensuring an uninterrupted production flow. Sand feeder vs. rock feeder A sand feeder is for clean, fine-to-medium material up to 200 mm; its job is stockpiling and dosed feeding. A rock feeder instead feeds run-of-mine rock up to 1500 mm to the crusher through a grizzly pre-scalping deck. In short, the sand feeder regulates finished-product flow, while the rock feeder handles oversize rock at the very start of the line. Complete plant solution General Machinery engineers the vibrating sand feeder together with conveyor belts, vibrating screens, sand-washing screws and a concrete batching plant as one integrated line from a single supplier — giving one point of contact, one accountable party and a matched spare-parts chain. S: What is a sand feeder used for? C: It is used to stockpile processed sand and aggregate off the ground and feed it to a conveyor, screen or truck at a steady, dosed rate, ensuring an uninterrupted production flow. S: How does it differ from a rock feeder? C: A sand feeder handles clean, fine material up to 200 mm; a rock feeder feeds run-of-mine rock up to 1500 mm to the crusher with a grizzly pre-scalping deck. S: What bin capacities are available? C: Standard bin capacities are 25, 50, 75 and 100 m³. Feed capacity ranges from 75 to 600 tph depending on material and plant. S: How is the bin charged? C: The bin can be charged by truck, wheel loader or conveyor belt. The off-ground design prevents material loss and contamination. S: Can the feed rate be adjusted? C: Yes. The flow rate is controlled via the vibration amplitude and frequency of the vibromotor or eccentric mechanism; short stroke and high frequency suit fine material.