Fruit handling · Stage 02
Use rotating brushes and spray to remove surface soil from firm apples after soaking, with a discharge arranged for inspection.
THE PROCESS DUTY
A brush washer moves fruit across rotating brushes while spray water carries loosened material away. Brush stiffness, rotation, fruit residence time and spray coverage determine the cleaning action. It is normally placed after a bubble or soak section and before final inspection, especially where soil remains in stem cavities or around the calyx.
IN THE LINE
The equipment is only useful when its feed and discharge are defined. These adjacent duties are the first interfaces to review.
WORKING PRINCIPLE
The explanation starts with the material and the process, not a catalogue description.
Rotating brushes contact the fruit surface and help dislodge material that soaking has softened. The useful result depends on brush stiffness, speed, fruit size and residence time. More aggressive brushing is not automatically better: it can damage fruit and increase juice exposure to soil.
Water sprayed over the brushing zone flushes loosened soil toward a drain or collection point. Nozzle placement and flow should cover the fruit path without creating dry patches. The spray water should not carry material back onto already cleaned fruit.
Fruit should rotate as it moves so the brushes contact more than one face. Roller or brush geometry, differential speed and fruit singulation affect coverage. This is also why brush washers need a controlled feed rather than an uncontrolled pile.
Brushes wear and need periodic replacement. Access to the brush bank, spray nozzles, drives and drains should be possible without dismantling the line. The washer discharge should present fruit clearly for inspection before crushing.
WHERE IT FITS
WHAT TO WATCH
CONFIGURATION OPTIONS
These are the choices that change the equipment scope. The approved datasheet fixes the final selection.
Brush material, diameter and spacing selected around fruit size and firmness.
Variable or fixed drive with a speed range suitable for the fruit and cleaning duty.
Nozzle layout and filtration to cover the brush zone and avoid blocked sprays.
Trough, screen and drain arrangement for the water and loosened material.
A transfer height and orientation that lets operators see and remove rejects.
SELECTION FACTORS
Bring these points to the equipment discussion. They are more useful than a single throughput number.
Brush stiffness and speed must be matched to the variety and condition.
The brush section should target the material the previous stage did not remove.
Spray flow and drain capacity are part of the machine selection.
Brush replacement and nozzle cleaning affect operating availability.
SPECIFICATIONS
No catalogue model or performance figure is shown until the configuration is approved. The final datasheet fixes these items.
| Specification area | What is defined in the approved datasheet |
|---|---|
| Capacity basis | Fruit mass per hour and required brush residence time |
| Brush contact | Material and stiffness selected for the fruit and cleaning duty |
| Spray system | Nozzle layout, filtration and water quality defined in the project |
| Drainage | Collection trough, screen and drain connection included |
| Drive | Fixed or variable speed with guards and maintenance access |
| Documentation | General arrangement, utility schedule and approved datasheet |
Provide your product, capacity basis and available utilities to move from this selection framework to a project-specific datasheet.
TECHNICAL FAQ
If your question depends on the fruit, product or site, include the conditions in the enquiry rather than relying on a general answer.
Send a project enquirySofter brushes reduce damage risk but may remove less adherent soil. Stiffer brushes increase mechanical action but can injure fruit. The choice should be based on fruit condition and a cleaning trial, not a blanket preference.
Water use depends on spray design, fruit load, recirculation and the required rinse standard. The project should define the water source, drain route and any reuse strategy. A quoted machine flow rate alone is not a complete water balance.
Brush spacing and fruit singulation affect how well different sizes are contacted. If the size range is wide, the layout may need grading or adjustable sections. Confirm the actual size range with the equipment supplier.
It normally follows a soak or bubble section and precedes a final spray, inspection and crusher feed. The exact position depends on the soil load and the fruit transfer arrangement.
YOUR PRODUCT. YOUR PROCESS.
Tell us the product, the quantity basis and the packaging. We will work back through the process to the equipment scope.