Product Introduction
After the grain is discharged from the central outlet of a flat-bottom silo by gravity, a large amount of grain remains at the bottom and cannot flow out by gravity. The flat-bottom cleaning machine (Sweep Auger) is a specialized device designed to automatically clean and transport the remaining grain from the bottom of the silo, achieving complete emptying of the entire silo.
Difference: Conical-bottom silos can basically discharge all material by gravity; flat-bottom silos require a cleaning machine for bottom cleaning.
Working Principle
The machine employs a combined rotation and revolution motion mode.
Rotation:
The long spiral auger rotates, conveying the grain from the bottom of the silo radially to the central discharge port.
Revolution:
The entire spiral arm slowly rotates 360° around the center of the silo, sweeping the entire silo bottom circle by circle.
Cleaning process
The grain is continuously pushed to the center by the spiral and then conveyed out of the silo through the bottom discharge corridor.
Frequency conversion system
The frequency conversion system automatically adjusts the revolution speed according to the grain resistance to prevent overload and machine stalling.
Main Structural Components
Central Rotating Base:
Center mounting base at the bottom of the silo, slewing bearing, explosion-proof slip ring power supply device (solves the problem of cable entanglement during rotation);
Silo Sweeping Spiral Arm (Auger):
Segmented modular galvanized spiral blades, length matched to the silo radius; optional arch-breaking cutting blades for handling slightly compacted grains;
Tail Support Wheels:
Far-end support wheels for spiral movement in a circular path along the silo bottom;
Drive System:
Spiral self-rotation motor + revolution drive (electric/hydraulic);
Electrical Control System:
PLC control cabinet, local/remote dual operation modes, blockage, overload, and limit protection;
Central Protective Cover:
Protects the rotating mechanism, reduces grain grading, and includes an inspection door and safety gate.
Core Advantages
Safety:
Completely eliminates manual silo cleaning, avoiding the major safety hazard of suffocation;
Fully Automatic:
One-button start, unattended 360° cleaning; can be connected to the grain silo central control system for remote control;
Thorough cleaning with no dead corners:
Thorough cleaning with no dead corners, significantly improving silo capacity utilization, first-in-first-out grain, reducing residual grain mold;
Highly efficient and environmentally friendly:
Fully enclosed conveying, low dust, low loss, low breakage rate;
Easy maintenance:
Modular structure, convenient disassembly and maintenance, self-lubricating bearings, long maintenance cycle;
Variable‑frequency adaptive load:
Variable frequency adaptive load, can slow down when encountering caking materials, less prone to stalling and motor burnout.
