Adjustable fan cover

By designing an adjustable hood, the problem of uneven cooling of product thickness in blown film equipment was solved, achieving uniform airflow distribution and uniform cooling of the product, thus improving cooling quality and thickness uniformity.

CN224408460UActive Publication Date: 2026-06-26ANYANG PLASTIC CHEM CO LTD
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Patent Information

Application Number
CN202521613454.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-31
Publication Date
2026-06-26
Estimated Expiration
2035-07-31

AI Technical Summary

Technical Problem

In blown film equipment, the thickness of the product is uneven during the extrusion, stretching and cooling process, resulting in poor cooling effect. Furthermore, the cooling rate is inconsistent for products of different thicknesses, which affects product quality.

Method used

An adjustable air hood is designed, comprising a housing, a baffle plate, an adjustable air duct, and a perforated baffle plate. By adjusting the opening of the air duct and the design of the perforated baffle plate, the uniform distribution and control of airflow can be achieved. Combined with the guide structure, it ensures that the airflow cools the product uniformly from multiple directions.

Benefits of technology

It achieves uniform cooling of products, reduces vibration and deformation, improves cooling quality and thickness uniformity, and meets the needs of products with different thicknesses.

✦ Generated by Eureka AI based on patent content.
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Abstract

The utility model relates to an adjustable fan cover which comprises a cover shell provided with a through hole. A first air outlet is formed in the hole wall of the through hole around the axis of the through hole; the housing is further provided with an air inlet communicating with the first air outlet. The wind shield is arranged in the housing around the axis of the through hole; the air baffle divides the inner space of the housing to form a first air chamber communicated with the air inlet and an air outlet chamber communicated with the first air outlet; one end of the adjusting air duct communicates with the air outlet chamber, and the other end communicates with the hole wall of the through hole; wherein along the axis of the through hole, one end of the wind shield is connected with the housing, and an equidistant gap is formed between the other end of the wind shield and the housing; a conical plug is arranged in the adjusting air duct; and the opening degree of the conical plug is controlled so as to control the opening degree of the adjusting air duct. According to the utility model, the conical plug in the air duct is adjusted, and the opening degree of the conical plug is changed to change the opening degree of the air duct, so that the blowing amount of the air duct is changed, and the cooling effect is improved through targeted adjustment.
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