Universal cold screens are equipment used in the processing of cold mix asphalt. Cold mix asphalt is a type of asphalt mixture that does not require heating during the mixing process, making it suitable for use in cold weather conditions or for temporary road repairs. Universal cold screens play a crucial role in the production of cold mix asphalt by helping to separate and classify the aggregate materials used in the mixture. 

Universal Cold Screens Features

Aggregate Screening: Universal cold screens are primarily used for screening and separating aggregate materials used in cold mix asphalt production. These aggregate materials typically include crushed stone, sand, gravel, and recycled asphalt pavement (RAP). The cold screens ensure that only properly sized aggregates are used in the asphalt mixture, which helps to optimize the quality and performance of the final product.

Multiple Deck Design: Universal cold screens often feature multiple decks or layers of screen panels to facilitate the separation of different size fractions of aggregate materials. Each deck is equipped with screen panels with specific opening sizes to classify the aggregates into coarse, intermediate, and fine particles.

Vibration Mechanism: Cold screens are equipped with a vibration mechanism that helps to agitate and separate the aggregate materials as they pass through the screen decks. The vibration mechanism typically consists of eccentric weights or unbalanced flywheels mounted on a shaft, which generates vibrations in the screen panels to promote efficient screening.

Adjustability: Operators can adjust various parameters of the cold screens, such as the amplitude and frequency of vibration, to optimize the screening performance for different types of aggregate materials and particle sizes. They can also adjust the angle of inclination of the screen decks to control the material flow and screening efficiency.

Dust Control: Universal cold screens may incorporate dust control measures to minimize airborne dust emissions during the screening process. This helps to improve air quality in the surrounding environment and maintain a safe working environment for plant operators.

Robust Construction: Cold screens are typically built with robust construction to withstand the abrasive nature of aggregate materials and the harsh operating conditions encountered in asphalt production plants. They are often made of high-strength steel and feature reinforced components to ensure durability and longevity.

Working principle

The cold screen is driven by an ordinary motor and is driven by the self-synchronizing or forced synchronous movement of the center of gravity of the exciter, so that the screen body periodically vibrates in the direction of the exciting force, and the material is parabolic in the straight direction on the screen surface. Exercise to achieve screening goals.

General cold screens parameters