Grain Cleaning Screen’s Grading and Screening Function

The grain cleaning screen's grading and screening function is the core engine for the upgrade of the grain processing industry. By precisely separating grains of different sizes, it not only increases product value but also meets the diverse needs of food, feed, and bioenergy sectors.

Technical Breakthroughs of Multi - layer Screening System

Five - layer Gradient Screens and Dynamic Control

The core of the grain cleaning screen's grading and screening function lies in the collaborative innovation of screen structure and motion control:

Five - layer screen design:

First layer (5mm): Catches oversized impurities like corn cobs.

Third layer (2mm): Separates standard - size soybeans.

Fifth layer (1mm): Screens out broken rice and small - grain cereals.

Vibration angle adjustment: Hydraulic devices adjust the screen body angle (15° - 25°) in real - time to control material flow rate and screening accuracy.

Frequency - conversion vibration module: When processing damp grain (moisture content >18%), the vibration frequency automatically drops from 1000 to 800 times per minute to prevent grain damage.

Scenario - based Application of Intelligent Grading Technology

Multi - parameter Adaptive Sorting

The grain cleaning screen's grading and screening function has broken through the limitation of single - size screening and achieved multidimensional precision control:

Weight - size dual - dimension sorting:

Uses photoelectric sensors to detect grain density and remove hollow, insect - damaged grains.

Employs pneumatic nozzles to blow off discolored grains (e.g., moldy corn) in a targeted manner.

Modular Technology Upgrade and Industry Expansion

Quick - change Screening Component System

To meet the needs of multi - variety processing, the grain cleaning screen's grading and screening function is evolving towards modularity:

Magnetic - attachment screens: Switch screen layer numbers (3/5/7 layers) within 10 minutes.

Biomimetic screen hole design: Arranges screen holes in a honeycomb - like structure, increasing screen surface utilization to 92%.

Self - cleaning device: Ultrasonic vibration plates installed under the screen automatically remove blockages every 2 hours of operation.

Cross - industry Application Extension

Seed processing industry: Sorting corn seeds with a thousand - grain weight error of ≤1.5g.

Traditional Chinese medicine processing: Separating grades of medicinal materials like goji berries and cassia seeds.