Ventilation chassis with pagoda structure and application of ventilation chassis in fluidized coating machine

Abstract

The invention relates to a ventilation chassis device with a pagoda structure, and belongs to the field of medicine, chemical engineering, materials and food equipment. Comprising a chassis and a pagoda structure, slotted ventilation holes are formed in an annular area around the center of the chassis, the part from the ventilation holes to the edge of the chassis is a solid part, and the edge of the chassis is of an R-angle design. The pagoda structure is installed above the ventilation holes and composed of a plurality of pagoda rings, a pagoda cap and a connecting rod, the pagoda rings are overlapped to form a pyramid shape, and the top end of the pagoda ring is fixedly connected with the connecting rod fixed to the center of the base plate through the pagoda cap. The ventilation chassis device with the pagoda structure is applied to the fluidization coating machine, so that materials can perform continuous spiral movement along with wind, the fluidization stroke of the materials in a cavity is prolonged, the bed collapse phenomenon and the adhesion phenomenon are avoided, the heat exchange rate of the materials is increased, the drying efficiency is improved, the energy consumption is reduced, and the utilization rate of coating liquid is improved.

Description

technical field [0001] The invention relates to a ventilation chassis device with a pagoda structure, in particular to a fluidized coating machine, belonging to the fields of medicine, chemical industry, material and food equipment. Background technique [0002] The coating process is one of the more important links in the modern pharmaceutical process, and its application in chemical, material and food industries is also increasing. The purpose is to prevent moisture, avoid light, isolate the air, mask the taste, reduce the adverse stimulation of the drug on the digestive system or increase the stability of the drug. It can also control the release position and release speed of the drug through the principle of membrane control. It is mainly used for surface coating of tablets, capsules, pills, soft capsules, etc. With the development of technology, new requirements are also placed on the formulation process, and many irregular drug granules and powders also require coatin...

AI Technical Summary

Problems solved by technology

Conventional fluidized bed coating cannot satisfy the coating of irregular granules and powders due to the design of the equipment. The fluidized bed coating of irregular granules is prone to grading effect, and the coating thickness of particles of different sizes is not uniform, and the irregular surface The thickness of the powder is not uniform, and powders with small particle sizes are prone to sticking when used in fluidized bed coating, resulting in coating failure.

The traditional centrifugal coating rotary chassis has no ventilation design. The ventilation during the coating process is completely provided by the slit between the rotary chassis and the barrel wall. The air intake is insufficient, the coating efficiency is low, and it is very difficult to pack powder with small particle size prone to sticking

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