Pre-cleaner

Pre-cleaner: how it works

1. Paddy from the intake pit is spread evenly across the width of the machine.
2. A top sieve with large holes lets the paddy fall through and carries off straw, string and clods.
3. A lower sieve with small holes holds the paddy and lets sand and broken bits drop out.
4. A current of air lifts out dust, chaff and empty grains as the paddy leaves.

Main types

Vibrating sieve cleaner

Flat sieves shaken by a vibrator, with an air channel. The usual cleaner of a rice mill.

Drum (rotary) pre-cleaner

A turning sieve drum that takes out large rubbish at high throughput, placed before silos and dryers.

Where it fits in the process

It is the first machine after intake. Raw paddy comes in from the pit, and cleaned paddy goes on to the destoner, then to parboiling or drying.

• Previous machineStorage silo
• Next machineDestoner

Pre-cleaner price in Bangladesh: how to get a quote

We do not publish prices. The price of a machine depends on its specification, the supplier and the shipping terms, and it changes with the market. Tell us the points below: we check feasibility and the import rules, then send you a quotation.

What to tell us

• The grain you clean: paddy, or also wheat, maize or pulses.
• How much paddy the line handles in an hour.
• How dirty the paddy usually is when it arrives.
• Whether you need the dust fan and cyclone with it.
• New or reconditioned.

Common questions