Fruit & Vegetable Processing
Blanching and Cooling Line
Frozen vegetable, dehydrated vegetable and canning plants that need controlled heat treatment before the next step.
Sized to product input (kg/h) at your residence time and piece thickness
01 · Fruit & Vegetable Processing — Equipment
Fruit and Vegetable Air Knife Dewatering Machine
Removes surface water left on produce after washing or blanching, reducing the load on dryers and freezers and keeping packs dry.
- Rating
- Sized to wet product input (kg/h) and the residual water you can accept
- Versions
- Mesh belt air knife · Tumbling air dryer · Centrifugal dewaterer
- Best for
- Washing, fresh-cut, frozen and dehydrated produce lines that need dry surfaces before the next step
- Reduces water carried into dryers, freezers and packs
- Air from above and below the belt for even drying
- Three principles for whole, cut and leafy produce
- Fans and nozzles positioned to limit product movement
Short answer: An air knife dewatering machine blows surface water off produce after washing or blanching, so less water reaches the dryer, freezer or pack. The key choices are how dry the surface must be and whether the product can lie in a single layer without being blown away.
How it works
Wet produce is spread onto a mesh belt by a vibrating feeder. As it travels, rows of narrow nozzles fed by high-pressure fans blow sheets of air across it from above and, on most designs, from below through the belt. The air strips water droplets from the surface; the water drips into a tray and drains away. Several rows in series, sometimes with a short tumbling transfer between them, help expose all sides of each piece.
In a tumbling air dryer, product rolls inside a rotating drum or over a series of rollers while air blows across it. In a centrifugal dewaterer, a batch of product in a perforated basket is spun so that water is thrown outward, which removes water quickly from leafy and cut product but is less gentle.
The machine removes surface water only; it does not dry the product inside. If you need a lower moisture content, the dewaterer is a preparation step for a dryer, not a replacement for one.
Which configuration fits
| Form | Suits | Watch out for |
|---|---|---|
| Mesh belt air knife | Whole fruit, root vegetables, firm cut pieces | Light pieces may lift; belt must not be overloaded |
| Tumbling air dryer | Cherry tomatoes, berries, small round items | Gentle handling must be checked for soft fruit |
| Centrifugal dewaterer | Salad leaves, shredded and cut vegetables | Batch operation; can bruise delicate items |
What we need from you to quote
- Product types, piece sizes and how delicate they are
- How wet they arrive and how dry they must leave
- Throughput measured on wet product input (kg/h)
- Noise limits and where operators stand
- Drainage at the site and power supply
- The machine before and after the dewaterer
Where it sits in a line
The dewaterer sits after a fruit and vegetable washer or the cooling end of a blanching and cooling line. It feeds a food freezer, a hot-air dryer, a fruit and vegetable sorter or a packing machine.
Common configurations
- Option A
Mesh belt air knife
product passes in a single layer under high-velocity air; suits whole fruit and firm pieces.
- Option B
Tumbling air dryer
product turns while air blows over it, so all sides are exposed; suits small round items.
- Option C
Centrifugal dewaterer
spins a basket to throw off water; fast for leafy and cut produce that tolerates spinning.
What we confirm before quoting
Our engineers check these points with you, so the quotation fits your site rather than a catalogue default.
- 01How much surface water may remain on the product
- 02Risk of light pieces being blown off the belt
- 03Whether the product can be spread in a single layer
- 04Noise limits in the work area
- 05How dripped water is drained away
Frequently asked questions
Why remove surface water before freezing or drying?
Surface water becomes ice that makes pieces stick together in a freezer, and in a dryer it is extra water to evaporate. Removing it first saves energy and improves free-flowing product.
Will light products blow off the belt?
They can. For leaves or small cut pieces we adjust air speed and nozzle angle, add covers, or recommend a centrifugal dewaterer instead. Send samples or photos so we can judge.
How noisy are air knife machines?
High-pressure fans are noticeable. Noise depends on fan type, number of fans and enclosure; tell us your limit and we can include silencing covers or place fans away from operators.
Get a quote for the Fruit and Vegetable Air Knife Dewatering Machine
Tell us your raw material, finished product and target output. Our engineers reply with a matched configuration and quotation.
What to send with your inquiry
- 1Raw material and its condition
- 2Finished product and packaging
- 3Target output — raw input or finished product
- 4Site photos, power supply, utilities
Email sales@hnfoda.com
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