Vibrating fluidized bed dryer is an intensified drying equipment with special purpose, which is usually used in the final drying process of materials. The following is a detailed introduction to the fluidized bed dryer (taking the vibrating fluidized bed dryer as an example):

First, the working principle

Vibrating fluidized bed dryer promotes the fluidization of materials through mechanical vibration, which is not only beneficial to the turbulent boundary layer and strengthens heat and mass transfer, but also ensures the production and operation of drying equipment under relatively stable hydrodynamics. Specifically, the material jumps forward under the excitation force in a given direction, and at the same time, the hot air input under the bed makes the material in a fluidized state, so that the material particles can fully contact with the hot air, thus achieving the best drying effect.

Second, the product features

Good drying effect: materials are heated evenly, heat exchange is sufficient, drying intensity is high, and energy consumption is reduced.

Stable operation: driven by vibration motor, convenient maintenance, low noise and long service life.

Uniform fluidization: the material is completely dried without dead space and blowing through.

Wide application range: good adjustability, the thickness of the material layer, the moving speed of the material and the vibration amplitude can all be changed to realize stepless adjustment.

Low requirements for materials: irregular materials can be used with little damage to the surface of materials, especially for drying fragile and easy-to-disperse materials.

Closed structure: the whole machine adopts fully closed structure, which prevents the cross-infection between materials and outside air and ensures the essential characteristics of materials.

Third, the application field

Vibrating fluidized bed dryer has been widely used in sugar, medicine, fertilizer, chemical industry, plastics, dairy products, salt industry, mining and metallurgy and other industrial sectors. For example, in the pharmaceutical industry, it can be used to dry various additives such as flaking particles, boric acid, borax, hydroquinone, etc. In the chemical industry, it can be used to dry plastic resin, malic acid, maleic acid and other chemical raw materials.

IV. Models and parameters

The model and parameters of vibrating fluidized bed dryer vary with manufacturers and specific needs. Generally speaking, the main parameters include fluidized bed area, heat source type, steam consumption, motor power and so on. When making specific selection, it is necessary to comprehensively consider factors such as material properties, drying requirements and production scale.

V. Operation and Maintenance

Preparation before operation: check the appearance of the equipment to confirm that there are no damaged or loose parts; Check the electrical system to ensure that the electrical components such as power supply, cable and plug are intact; Check the mechanical transmission system, including motor, reducer, bearing, etc., to ensure that they can work normally; Check whether there are foreign objects in the material to avoid damage to the equipment.

Operation process monitoring: confirm the correct feeding mode of materials to ensure that materials can enter the dryer evenly and continuously; Adjust the valve of the air inlet according to the nature of the material and the drying requirements; During the drying process, the equipment status, temperature, humidity and other index data should be checked frequently; Observe whether the product discharged from the outlet of the vibrating fluidized bed dryer is uniform, and regularly check the moisture content and output of the product.

Maintenance and maintenance: routine maintenance is carried out every day, such as filling grease and tightening screws at vibration parts; Regularly clean the orifice bed of the vibrating fluidized bed dryer to eliminate hole plugging and material accumulation; Regularly check whether the circuit connection is loose or damaged; Check whether the transmission system is loose or damaged, and make timely maintenance and adjustment; Clean the filter and other parts regularly.

VI. Matters needing attention

It is forbidden to put inflammable and explosive materials into the fluidized bed dryer to prevent safety accidents.

When stopping, cut off the power supply of the vibration motor when the discharge port of the dryer is no longer discharging; Close the steam pipeline valve and heating system to gradually cool the drying system; After the air temperature drops to a safe temperature, turn off the power of the blower and other motors.

To sum up, the fluidized bed dryer (should be "fluidized bed dryer") is an efficient and stable drying equipment with wide application prospects. When selecting and using, factors such as material properties, drying requirements and production scale need to be fully considered to ensure the normal operation of the equipment and prolong its service life.