Tunnel dryer device

NegotiableUpdate on 12/31

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

The tunnel dryer device belt drying production line is a continuous drying equipment used for batch production of materials and items. It is used for drying sheet, strip, and granular materials and items with good breathability. It is particularly suitable for dehydrated vegetables, traditional Chinese medicine decoction pieces, and other materials with high moisture content that do not allow high temperatures.

Product Details

Tunnel dryer device

Basic process parameters

1. Material name: Chinese herbal medicine decoction pieces

2. Initial moisture content: 50% -70% (calculated as 60%)

3. Final moisture content: 10% -15% (calculated as 13%)

4. Material temperature tolerance: 60-130 ℃

5. Material thickness: 0.3-0.5cm

Production capacity: 200kg-250kg/h.

7. Laying thickness: 3-5cm

At present, the existing tunnel type dryers are generally manually built with an air duct in the middle and tunnels on both sides. The furnace flue gas passes through the thicker flue gas duct, and the fan blows the flue gas to exchange the hot air. The furnace body is directly connected to the ground. However, the disadvantages of this type of dryer are: temperature loss, large coal consumption, low thermal efficiency, and the hot air exchanged returns from the air duct to the tunnels on both sides. The hot air is uneven in the tunnels, resulting in uneven drying of the materials. After drying, the materials need to be sorted and dried again, resulting in high drying costs. Coal stoves cannot be smoke-free, causing environmental pollution.

The tunnel style fruit and vegetable dryer adopts a tube type three pass smokeless hot air stove. The hot air is directly blown into the materials inside the tunnel by a high-temperature and high humidity axial flow fan. The materials are placed on the tray of each layer of the material truck. The materials enter the tunnel from the end of the tunnel and are discharged from the side of the tunnel near the hot air stove. A truck of dry materials is discharged, and another truck of wet materials is discharged from the other end, achieving intermittent drying in a cycle.

Tunnel dryer device

Process condition design

1. Drying method: Belt drying (static drying)

2. Contact method between material and hot air: penetration circulation type

3. Inlet air temperature: calculated at 130 ℃

4. Exhaust temperature: calculated at 50 ℃

5. Product collection method: Belt drying outlet

6. System material requirements: The mesh belt is made of stainless steel 304, the inner wall is made of 304 stainless steel, and the outer wall is made of 304 stainless steel.

Main technical parameters of belt dryer

(1) Equipment name

Multi layer belt dryer (3 layers)

(2) Equipment usage conditions and requirements