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Changzhou Ruiting Drying Engineering Co., Ltd
Process principle of spiral vibration dryer
Date: 2025-06-12Read: 7
The process principle of the spiral vibration dryer is to achieve efficient drying through vibration driven and hot air counterflow. The specific process is as follows:
1、 Principles of Material Movement
1. Spiral trajectory motion: Wet materials enter the dryer from the top feeding port, and under the circumferential excitation force and gravity generated by the vibration motor, they move in a jumping circular motion from top to bottom along the spiral bed, falling layer by layer to the bottom discharge port.
2. Vibration enhanced dispersion: Vibration causes material particles to continuously jump and flip, avoiding agglomeration and increasing the contact area with hot air.
2、 Principle of hot air transmission
1. Counter current heat exchange: Clean hot air enters from the bottom of the equipment, passes through the porous structure of the spiral bed from bottom to top, and forms a reverse flow with the falling wet material.
2. Multi level penetration drying: Hot air repeatedly penetrates multiple layers of materials during the upward process, fully conducting heat and mass transfer, and the evaporated moisture is discharged from the top with the exhaust gas.
3、 Drying efficiency design
1. Efficient mass transfer: The countercurrent design extends the gas-solid contact time, allowing hot air to penetrate the material layer multiple times, resulting in a heat transfer efficiency that is more than twice that of a regular fluidized bed.
2. Low damage crushing control: Vibration jumping reduces mechanical friction, significantly reducing the crushing rate of spherical and granular materials (such as pills).
3. Adjustable and controllable parameters: The residence time of the material is adjusted by vibration frequency, and the hot air temperature (60-200 ℃) and air volume are configured as needed to meet the drying needs of different materials.
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