What is a screening machine?

Screening machines are mechanical equipment that uses mechanical movements such as vibration, rotation or swing to classify, filter or remove impurities from materials. The main types include linear vibrating screens, rotary vibrating screens, ultrasonic vibrating screens, filter screens, inline screens, swing screens, etc. Different models are suitable for screening needs of different particle sizes, precisions and outputs. The production capacity ranges from hundreds of kilograms to tens of tons per hour, and can be flexibly selected according to material characteristics and process requirements.

What are the classifications of screening machines?

According to the characteristics of the material, screening machines can be divided into coarse particle screening (including linear screens and inline screens, suitable for large-particle high-yield materials), fine screening (including rotary vibrating screens and ultrasonic screens, used for high-precision classification of fine powders), fragile material screening (including swing screens, to achieve gentle screening and anti-crushing) and liquid filtration (including filter screens, dedicated to solid-liquid separation). Different models can meet the screening needs of different particle sizes, humidity and precision. The following is a detailed explanation of the production capacity of each product.

Linear vibrating screen

The linear vibrating screen is driven by a dual vibration motor. The material makes a linear jumping motion on the screen surface. It is suitable for screening and grading medium and large particle materials. The production capacity of the linear vibrating screen is large, usually up to 1-50 tons/hour, depending on the screen surface size and material characteristics. Large linear vibrating screens (such as 1800×4800mm) can handle 30-50 tons/hour, and medium-sized equipment (1200×3000mm) can handle about 10-20 tons/hour.

Rotary vibrating screen (circular vibrating screen)

The rotary vibrating screen uses a vertical vibration motor as the excitation source. The material makes a three-dimensional rotational motion on the screen surface, which is suitable for screening fine materials. The production capacity is relatively small but the precision is high. The rotary vibrating screen with a diameter of 600mm can handle about 0.5-2 tons/hour, the diameter of 1200mm can reach 3-8 tons/hour, and the large rotary vibrating screen with a diameter of 1800mm can handle 10-15 tons/hour.

Ultrasonic vibrating screen

Ultrasonic vibrating screen is a screen that adds an ultrasonic system to the rotary vibrating screen. It solves the problem of screening high-fine materials (such as above 325 mesh) through high-frequency vibration. For ultrafine powder screening, the production capacity of ultrasonic vibrating screen is relatively low. The processing capacity of ultrasonic vibrating screen with a diameter of 600mm is about 0.1-0.5 tons/hour, and that of 1000mm is about 0.3-1 tons/hour.

Filter screen

Filter screen is specially used for liquid filtration and solid-liquid separation, and is commonly used in filtration processes in the food and chemical industries. The production capacity varies greatly. The small filter screen (diameter 500mm) can process about 1-3m³/hour of liquid, and the large filter screen (diameter 1500mm) can reach 10-20m³/hour, depending on the material viscosity and filtration accuracy requirements.

Direct discharge screen

The direct discharge screen is driven by dual motors. The material is discharged directly from the feed port to the discharge port. The screening path is short and the efficiency is high. It is suitable for rapid screening of granular materials. The production capacity is relatively high. The processing capacity of the 800mm diameter straight screen can reach 5-10 tons/hour, and the 1200mm diameter can reach 15-25 tons/hour.

Swinging screen

The swinging screen simulates the manual screening action and uses a low-speed eccentric mechanism to make the screen box do regular swinging motion. It is suitable for gentle screening of fragile and easy-to-agglomerate materials. The production capacity is medium. The processing capacity of the 1000mm diameter swinging screen is about 2-5 tons/hour, and the 1500mm diameter can reach 5-12 tons/hour.

The above detailed explanation of the production of each product, combined with the material and price selection process, linear vibrating screen (10-50 tons/hour) and straight screen (5-25 tons/hour) have high production capacity and prices ranging from about 4,000 to 40,000 yuan, rotary vibrating screen (0.5-15 tons/hour) and swing screen (2-12 tons/hour) have medium production capacity and prices ranging from about 5,000 to 50,000 yuan, ultrasonic vibrating screen (0.1-1 tons/hour) has low production capacity but high precision and high prices ranging from about 6,000 to 60,000 yuan, and filter screen (1-20m³/hour) has a low price.

When choosing a screening machine, users should consider the equipment type, size and configuration according to the specific material characteristics and production needs to obtain the best production efficiency and screening effect.