Electric Automatic Sieve Shaker Vibrating Sieve Machine

Electric Automatic Sieve Shaker Vibrating Sieve Machine are commonly used in laboratories and industrial production. Their principle is to use a motor-driven eccentric device to generate high-frequency vibrations, causing the material to continuously toss and sieve through the screen, achieving particle classification. Common screening mesh sizes range from 20 to 500 mesh, and the number of screen layers can be configured from 1 to 8 to meet multi-stage separation requirements. Common screen diameters include 200mm, 300mm, and 400mm.

Different materials require different vibration amplitudes due to their density and properties. Light, dry, and fluid powders (such as starch and powdered sugar) are suitable for a small amplitude of 0.5–1mm; heavy, easily agglomerated, or wet materials (such as metal powders and quartz sand) require a larger amplitude of 1.5–3mm to fully break up the particles. The equipment is typically constructed of 304 or 316 stainless steel, offering corrosion resistance, high strength, and easy cleaning, making it suitable for fine screening operations in industries such as chemical and metallurgy.

The Sieving Principle of an Electric Automatic Sieve Shaker Vibrating Sieve Machine

The core of an Electric Automatic Sieve Shaker Vibrating Sieve Machine lies in its vibration method. Different vibration mechanisms are suitable for different material properties. Common vibration methods include electromagnetic/ultrasonic vibration, mechanical vibration (eccentric/rotary vibration), and tapping vibration (Ro-Tap).

Electromagnetic/ultrasonic vibration: Suitable for fine powders such as flour, graphite, and pharmaceutical powders. This method transmits high-frequency, low-amplitude electromagnetic or ultrasonic vibrations to the sieve surface, effectively preventing particles from clogging the sieve apertures and achieving high-precision screening. It is particularly suitable for laboratory analysis of extremely small particle sizes and stringent requirements.

Mechanical vibration (eccentric/rotary vibration): This is the most common method. A motor drives the eccentric block to rotate at high speed, generating three-dimensional vibration, causing the material to exhibit a combination of horizontal spiraling and vertical bouncing motion on the sieve. This method is highly efficient and suitable for most granular materials, such as sand, grain, and plastic granules.

Ro-Tap vibration: This combines rotation and mechanical tapping to simulate manual sieving. Its sieving process is closer to traditional laboratory procedures, ensuring authoritative and comparable data. It is particularly suitable for difficult-to-screen materials such as molding sand and cement. This method is often adopted by standards such as ASTM.

Material Characteristics of Electric Automatic Sieve Shaker Vibrating Sieve Machines

Selecting an Electric Automatic Sieve Shaker Vibrating Sieve Machine depends on the material characteristics. For food, pharmaceutical, or chemical powders, 304 or 316L stainless steel is often used to prevent rust and contamination. For ordinary building materials or plastic granules, carbon steel can suffice. For fragile materials, a gentle vibration mode should be selected to avoid breakage. For highly viscous materials, a stronger vibration force is required to reduce adhesion. For materials prone to static electricity, anti-static measures or ultrasonic vibration can be used. For high-density or heavy materials, a stronger excitation force is required to ensure smooth passage through the sieve.

Sieving Accuracy of the Electric Automatic Sieve Shaker Vibrating Sieve Machine

The Electric Automatic Sieve Shaker Vibrating Sieve Machine offers high sieving accuracy, with a wide range of screen diameters, layers, and mesh sizes, allowing you to choose according to your production needs.

Sieve Diameters: Common sizes include 75mm, 100mm, 200mm, 300mm, and 400mm. Laboratories often use 200mm or 300mm, while small-batch production or industrial-scale screening can use 400mm or larger.

Number of Screen Layers: The machine can simultaneously stack multiple screen layers, such as 3, 5, or 8. More layers allows for simultaneous analysis of a wider range of particle size distributions, significantly improving testing efficiency.

Sieve Mesh Range: Typically, mesh sizes range from a few to thousands (e.g., 20μm to 20mm). Users should select a size based on their target particle size range to ensure coverage of their analysis needs.

Electric Automatic Sieve Shaker Vibrating Sieve Machine Industry Applications

Laboratory R&D: High precision and good repeatability are required for small sample volumes. Tabletop, adjustable vibration, and precision equipment with a moderate number of stages are typically selected for applications in materials science, pharmaceutical R&D, and nanopowder research.

Quality Control: In industries such as building materials, food, and pharmaceuticals, test results must comply with international standards such as ASTM and ISO. Ro-Tap vibrating sieve machines are widely used in these fields for their reliable and traceable results.

Small-batch Production: Suitable for small-scale businesses requiring a certain processing capacity. The equipment needs to be rugged and durable, capable of operating continuously for extended periods. Larger diameter sieves (such as 300mm or 400mm) are typically used to increase single-pass processing capacity.

The Electric Automatic Sieve Shaker Vibrating Sieve Machine is a core device for modern sieving and particle analysis. Its sieving principle, vibration method, sieve configuration, vibration intensity adjustment capability, and material selection determine its applicability and screening accuracy. Whether in precision analysis in scientific research laboratories or in quality control and small-batch processing in industrial production, this type of equipment plays an irreplaceable role. A correct understanding of material characteristics and screening requirements, coupled with the appropriate machine model and parameters, can maximize performance and ensure the accuracy and stability of screening results.