Belt Dryer
An 85-foot, 5-belt
(5-layer) Continuous Mesh Belt Dryer is a heavy-duty industrial dehydrator
designed for large-scale vegetable processing (onions, garlic, carrots, ginger,
etc.).
The 85-foot length
combined with 5 layers provides a massive effective drying path (the product
travels nearly 400 linear feet inside the machine), ensuring thorough moisture
removal even at high capacities.
1. Technical
Specifications
|
Feature |
Details |
|
Total Length |
85 Feet (approx.
26 Meters) |
|
Number of Layers |
5 Layers
(Vertically stacked mesh belts) |
|
Belt Width |
2000 mm to 2500
mm (Standard) |
|
Drying Surface
Area |
~240 to 300
Square Meters ($m^2$) |
|
Belt Material |
Food-grade SS 304
Mesh or Teflon-coated mesh |
|
Temperature Range |
40°C to 120°C
(Adjustable per zone) |
|
Retention Time |
2 to 6 hours (VFD
controlled belt speed) |
|
Heat Source |
Steam Boiler,
Thermic Fluid, Natural Gas, or Heat Pump |
2. Design &
Structural Details
- The "Flip" Mechanism: As the
product moves to the end of the first belt, it drops onto the second belt
(which moves in the opposite direction). This happens 4 times. This
flipping action is crucial for vegetables because it exposes the wet
underside of the slices to the hot air, ensuring uniform drying.
- Multi-Zone Temperature Control: An 85-foot
dryer is divided into 4 or 5 independent heating zones.
- Zone 1 (Inlet): High temperature for
rapid surface moisture evaporation.
- Middle Zones: Moderate temperature to
prevent "case hardening" (where the outside dries but the
inside stays wet).
- Last Zone (Outlet): Low temperature to
stabilize the product before it exits.
- Internal Air Circulation: The machine is
equipped with high-pressure centrifugal fans on both sides to create a
"cross-flow" of air through the mesh belts and the product.
3. Application for
Vegetables
This specific size
is ideal for the following processing capacities:
- Onion Slices: ~500–700 kg/hr finished
product.
- Garlic Slices: ~600–800 kg/hr finished
product.
- Leafy Greens (Spinach/Moringa): ~200–300
kg/hr (due to low density).
- Root Vegetables (Carrots/Beets): ~400–500
kg/hr.
4. Utility
Requirements for an 85ft Line
- Power: You will need approximately 100–150
HP (75–110 kW) to run the belts, heavy-duty blowers, and exhaust fans.
- Heat Load: A machine of this size
typically requires a 1.5 to 2.0 Ton/hr Steam Boiler or a 600,000 to
800,000 kcal/hr Gas Burner.
- Exhaust System: Multiple moisture-exhaust
chimneys (usually 3 or 4) are installed along the top of the machine to
vent out humid air.
5. Maintenance
& Hygiene
- CIP (Clean In Place) Systems: High-end
models include a continuous belt-washing system at the bottom to remove
sticky vegetable juices during operation.
- Inspection Windows: Tempered glass windows
are located at every zone to monitor product color and moisture without
opening the doors.
- Insulation: The outer body is made of
double-walled SS 304 with 80mm–100mm high-density rock wool to prevent
heat loss in the factory.
Use Machine In Dehydrated Vegetable Powders
These are often produced via spray-drying
(for fine consistency)
Root Vegetables:
Beetroot, Carrot, Potato, Sweet Potato, Ginger.
- Alliums:
White Onion, Red Onion, Pink Onion, Garlic, Shallot.
- Leafy
Greens: Spinach, Kale, Moringa, Fenugreek (Kasuri Methi).
- Nightshades
& Peppers: Tomato, Red Bell Pepper, Green Bell Pepper, Paprika,
Green Chilli, Red Chilli.
- Others:
Cabbage, Mushroom (Oyster/Button), Pumpkin, Okra (Ladyfinger), Bitter
Gourd.
2. Dehydrated Flakes & Kibbled Products
Flakes are used when texture is required (e.g., in soups,
seasonings, or instant meals).
- Vegetable
Flakes: Onion (Red/White), Garlic, Carrot, Potato, Beetroot, Cabbage,
Green Bean.
- Spice/Herb
Flakes: Red Chilli Flakes, Green Chilli Flakes, Parsley Flakes,
Cilantro (Coriander) Flakes.
- Specialty:
Amchur (Green Mango) Flakes, Ginger Slices/Flakes.
3. Fruit Powders
Ideal for smoothies, baking, baby food, and confectionery.
- Tropical:
Mango (Alphonso/Kesar), Banana (Ripe/Green), Pineapple, Papaya, Chikoo
(Sapota), Guava (Pink/White), Dragon Fruit.
- Berries:
Strawberry, Blueberry, Raspberry, Cranberry, Blackberry.
- Citrus:
Lemon, Lime, Orange.
- Traditional/Medicinal:
Amla (Gooseberry), Jamun (Black Plum), Pomegranate, Tamarind, Apple,
Custard Apple.
4. Herbal & Dried Leaf Products
These are widely used in Ayurveda, cosmetics, and wellness
teas.
- Wellness
Herbs: Moringa, Ashwagandha, Wheatgrass, Spirulina, Shatavari, Giloy.
- Culinary
Herbs: Mint (Pudina), Curry Leaves, Tulsi (Holy Basil), Lemongrass,
Oregano, Thyme, Rosemary, Sage.
- Cosmetic/Healing:
Neem, Henna, Aloe Vera, Rose Petal, Hibiscus, Hibiscus.