Vibratory Screening Machine

Product description

The rotary vibrating screen is a device that achieves fine screening of materials through the drive of a vertical vibrating motor. The screen can be set in a graded manner according to the particle size requirements. Materials spread in a spiral shape from the center to the periphery on the screen surface. Particles smaller than the screen holes pass through the screen to become underscreen materials, while particles larger than the screen holes are discharged along the edge. Combined with a bouncing ball and other screen cleaning devices, it can prevent clogging. The equipment features a compact structure, a screening accuracy of over 95%, adjustable processing capacity, noise below 75dB, and convenient screen replacement. It is widely used in scenarios such as chemical pigment classification, food starch filtration, and pharmaceutical raw material screening, especially suitable for dry and wet screening operations of fine particle materials ranging from 0.074 to 5mm.

Working principle
The core working principle of the rotary vibrating screen is to utilize the three-dimensional vibration effect of the vertical vibrating motor: when the eccentric weights at the upper and lower ends of the motor shaft rotate at high speed, the upper weight generates a horizontal circular vibration, causing the material to spread on the screen surface, while the lower weight forms a vertical jump, allowing the material to fully contact the screen. The inclined thrust generated by the Angle difference between the two pushes the material to move in a spiral along the screen surface. After the material falls from the center, particles smaller than the sieve holes pass through the screen to become under-screen materials, while particles larger than the sieve holes are discharged along the edge. By adjusting the eccentricity Angle of the counterweight and the counterweight, the movement trajectory of the material and the screening efficiency can be precisely controlled.
 
Features & Benefits

1. Outstanding screening performance
- High-precision screening: The screening accuracy can reach over 95%, suitable for fine particle materials ranging from 0.074 to 5mm, and can precisely separate powders, particles or slurries of different particle sizes.
- High-efficiency processing capacity: The three-dimensional vibration increases the contact area and duration between the material and the screen, raising the processing capacity by 30% compared to traditional screen machines. Moreover, the screening efficiency can be flexibly controlled by adjusting the vibration parameters.

2. The structural design is exquisite
Three-dimensional vibration trajectory: The vertical motor drives to generate a combined vibration of horizontal circular motion, vertical jumping and inclined thrust. The material spreads in a spiral shape on the screen surface, making the screening more uniform.
Compact anti-clogging design: The circular screen body takes up little space and is equipped with standard devices such as bouncing balls and ultrasonic waves for cleaning the screen, effectively solving the problem of material clogging. It is suitable for materials that are prone to clogging, such as flour and coatings.
- Strong sealing performance: The fully enclosed screen frame is equipped with rubber sealing rings, ensuring no dust leakage during operation and meeting the hygiene standards of the food and pharmaceutical industries.

3. Convenient operation and maintenance
- Parameter adjustability: By adjusting the eccentric angles (0-90 °) of the upper and lower weights and the counterweights, the material movement trajectory can be precisely controlled to meet different screening requirements.
- Easy to replace and maintain: The quick-release screen frame structure makes the screen replacement only take 5 to 10 minutes. The aluminum alloy shell of the vibrating motor has good heat dissipation, and the service life of the whole machine can reach 5 to 8 years. The operating noise is ≤75dB.

Application scope

- Chemical industry: Grading of pigment powder, filtering impurities in paint, and removing lumps from PVC resin powder.
- Food: Flour/starch screening and impurity removal, juice filtration residue, condiment particle size classification.
- Pharmaceuticals: Particle size control of active pharmaceutical ingredients powder, filtration of traditional Chinese medicine extracts, and screening in compliance with GMP standards.
- Minerals: Quartz sand is classified by mesh size, oxide scale is removed from metal powder, and raw materials for refractory materials are screened.
- Building materials: Remove coarse particles from ceramic raw materials, filter lumps from architectural coatings, and screen the particle size of putty powder.
- Others: Screening of lithium battery materials, particle filtration in sewage treatment, separation of materials in explosion-proof environments.

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