Henan Workers Machinery Co., Ltd.
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Stainless Steel Belt Microwave Dryer Continuous Drying Sterilization Machine
Conveyor Microwave Dryer
Introduction
Microwave is an electromagnetic wave with a frequency of 300MHz ~ 300GHz. Microwave frequency is higher than normal radio frequency, often referred to as a UHF electromagnetic wave. Microwave as an electromagnetic wave also has wave-particle duality. The basic properties of microwaves usually appear as penetrating, reflecting, absorbing.
For glass, plastic, and porcelain, the microwave is penetrating and will not be absorbed.
For water and food, the microwave will be absorbed, thus resulting in self-heating.
For metal things, they will reflect the microwave.
Belt microwave drying machine processes products on the conveyor belt with high handling capacity.
Technical parameters
| NO. | Model | Microwave frequency (MHz) | Microwave power (kW) | Voltage (V/Hz) | Belt width (m) | Microwave leakage (mw/cm2) | Dimension (mm) | Weight (kg) |
| 1 | WKS-BLM-12 | 2450±50 | 12 | 380/50 | 0.75 | ≤1 | 6000*1100*1700 | 1000 |
| 2 | WKS-BLM-15 | 2450±50 | 15 | 380/50 | 0.75 | ≤1 | 6000*1100*1700 | 1000 |
| 3 | WKS-BLM-20 | 2450±50 | 20 | 380/50 | 0.75 | ≤1 | 8000*1100*1700 | 1200 |
| 4 | WKS-BLM-30 | 2450±50 | 30 | 380/50 | 0.75 | ≤1 | 8000*1100*1700 | 1500 |
| 5 | WKS-BLM-40 | 2450±50 | 40 | 380/50 | 0.75 | ≤1 | 8000*1100*1700 | 2000 |
| 6 | WKS-BLM-45 | 2450±50 | 45 | 380/50 | 0.75 | ≤1 | 8000*1100*1700 | 2000 |
| 7 | WKS-BLM-50 | 2450±50 | 50 | 380/50 | 0.75 | ≤1 | 8000*1100*1700 | 2000 |
| 8 | WKS-BLM-60 | 2450±50 | 60 | 380/50 | 1.1 | ≤1 | 10000*1500*1700 | 2500 |
| 9 | WKS-BLM-80 | 2450±50 | 80 | 380/50 | 1.1 | ≤1 | 10000*1500*1700 | 2500 |
Working principle
Microwave drying is such a drying method that material absorbs microwave energy which can be converted into heat so that the material has overall heating both internally and externally at the same time and it is completely different from other conventional drying methods.
The conventional drying method is based on the principle of heat conduction, convection, and radiation which transfer heat from external to internal, inevitably there is a temperature gradient in the material, therefore, heating is uneven and there may result in local overheating.
Microwave drying technology is different from the conventional drying method, which is by means of high-frequency reciprocating motion of the dipolar molecule of the material, resulting in internal friction heat which heats the material, without any heat transfer process, and the material is heated both internally and externally at the same time with high-speed drying and uniform drying result, and the energy consumption is far less than traditional heating.
Main features
1. High handling capacity, continuous processing, labor-saving;
2. Energy-efficient and drying time is short. Microwave is a direct effect on the material, there is no additional heat loss, so the thermal efficiency is very high and drying time is very short, saving 30% electric power compared with far infrared heating.
3. Easy to control, advanced technology. Compared with the conventional method, the equipment is ready to use; with no thermal inertia, flexible and convenient operation; microwave power and transmission speed adjustable. During microwave heating and drying, no waste water, no waste gas, it is a safe and harmless high-tech.
4. Mildew-proof, sterilization, preservation: microwave drying functions with thermal effects and biological effects, can achieve mildew-proof and sterilization at a lower temperature. High speed and short time drying maximize the preservation of the activity of the material and food vitamins, the original color and nutrients.
5. Selective heating. Water molecules are best at absorbing microwaves; therefore, the high water content part absorbs more microwave power than the low water content part. This is the characteristic of selective heating through which uniform heating and drying can be achieved.
Application
Microwave drying, sterilization, heating, preservation, extraction, synthesis, puffing, thawing, and sintering equipment have been widely used in leather, wood, color printing, food, spices, chemicals, pharmaceuticals, tobacco, building materials, ceramics, paper, rubber, and medical fields.
Characteristics of fast speed, energy saving, high production efficiency, uniform drying, clean production, easy to achieve automatic control and improve product quality and so on.