Pre-cleaning · Model HZXZ
Rotary Vibrating Screen
High-capacity size grading for wheat, millet, sorghum and oilseed.
- 60+ years manufacturing
- 10–500 t/d capacity range
- 100+ patents
- Turnkey commissioning
What it does
A two- or three-deck rotary vibrating screen that grades by particle size. Widely used beyond wheat — the same frame handles millet, sorghum, brewing grain and chemical granulate — which is why it is often the second machine purchased after a drum sieve.
Technical parameters
Nominal values at standard conditions. Confirm final specification on the order drawing.
| Model | Decks | Pre-clean wheat (t/h) | Clean wheat (t/h) | Power | Weight | Dimensions (mm) |
|---|---|---|---|---|---|---|
| HZXZ150×250 | 2 | 50 | 30 | 3 kW | 2,800 kg | 2988 × 2206 × 2106 |
| HZXZ150×250A | 3 | 50 | 30 | 3 kW | 2,900 kg | 2988 × 2206 × 2106 |
| HZXZ200×250 | 2 | 60 | 40 | 4 kW | 3,200 kg | 2988 × 2705 × 2106 |
| HZXZ200×250A | 3 | 60 | 40 | 4 kW | 3,300 kg | 2988 × 2705 × 2106 |
Selection guidance
Three decks are worth the marginal cost when you also need to grade small impurities below 1.5 mm — a two-deck unit leaves them in the wheat.
Maintenance
Check screen tension weekly; slack screens are the number one cause of premature frame cracking. Replace rubber buffers annually.
Selection cross-check
Pre-cleaning screens: drum vs rotary vibrating
Both remove coarse impurities before the main cleaning house. The choice is about capacity, footprint and how dirty the wheat arrives.
This machine
Rotary Vibrating Screen
HZXZ
Choose it when
Smaller plants (under 20 t/h) where a single compact machine must do coarse and medium separation, and where the building height is limited.
Watch out for
Lower capacity per unit width than a drum sieve. The rotary motion is harder on the screen cloth, so expect more frequent replacement.
Alternative
Drum Sieve Pre-Cleaner
SCQY
Choose it when
High-throughput intake where wheat arrives with straw, sticks and large foreign matter. Best when you need to take 30–80 t/h out of a truck pit without a tall building.
Watch out for
Poor at fine separation — it is a scalper, not a grader. Needs a screen change for different grain sizes and cannot handle damp wheat.
Open Drum Sieve Pre-Cleaner →Decision rule
Above 25 t/h intake, use a drum sieve. Below that, a rotary vibrating screen is cheaper for the same duty and takes less headroom.
Answers
Frequently asked questions
Straight answers to the questions engineers and mill owners actually ask us during plant sizing. If your case is not covered, send the wheat specification and your target tonnage.
Ask an engineer →- What is the difference between pre-cleaning and cleaning capacity?
- Pre-cleaning capacity assumes lightly contaminated grain straight from the field. Cleaning capacity assumes grain that has already passed a first stage and is being graded to mill-ready standard.
Next step
Send your tonnage. Get a flow sheet in 12 working hours.
Send us: daily capacity target, wheat type and quality, available building dimensions, and local power supply. We reply within 12 working hours with a preliminary flow sheet, equipment list and budget range — no obligation.