Screening Machines, the Choice: Conventional or Directly Excited?


Screening Machines, the Choice: Conventional or Directly Excited? *What’s the best screening solution for you? With many options available, companies often struggle to find the optimal machine for their specific requirements.* Although all technologies serve the same basic purpose – the separation of particles by size – they fundamentally differ in their construction, operation, and applications. The right choice can not only increase productivity but also minimize maintenance and downtime, which is crucial in today’s competitive industrial landscape. Below, we’ll look at the differences between conventional vibratory screens and direct-excitation screen machines to help you make your decision. Conventional Vibratory Screens: How They Work Conventional vibratory screens operate with an oscillating motion transmitted to the entire screen frame. This movement is generated by eccentric shafts or unbalance motors, ensuring the material advances on the screen surface and particles can fall through the mesh. Advantages of Conventional Screens: Simple design High throughputs Flexibility Disadvantages of Conventional Screens: Inefficient separation with low vibration amplitudes Higher maintenance costs due to high wear High energy consumption Direct Excitation Screen Machines In contrast to conventional vibratory screens, this technology directly excites only the screen mesh. This is achieved by special electromagnetic drives, known as ”Powerpacks.” The screen frame itself remains static. Advantages of Direct Excitation: Higher efficiency for fine separations Lower mechanical stress and longer lifespan Ease of maintenance Energy savings RHEWUM Solutions and Advantages: High throughput capacity with models like the RHEsono®, RHEmoto®, or RHEfino® Low operating costs due to high-quality materials High operational reliability due to modular design Flexible adjustment of vibration parameters during operation Video: https://www.youtube.com/watch?v=tAI1rIQFol4 More information Screening machines with direct excitation of the screen mesh: https://www.rhewum.com/vibration-screens

Although all technologies serve the same basic purpose – the separation of particles by size – they fundamentally differ in their construction, operation, and applications. The right choice can not only increase productivity but also minimize maintenance and downtime, which is crucial in today’s competitive industrial landscape. Below, we’ll look at the differences between conventional vibratory screens and direct-excitation screen machines to help you make your decision.

Conventional Vibratory Screens: How They Work

Conventional vibratory screens operate with an oscillating motion transmitted to the entire screen frame. This movement is generated by eccentric shafts or unbalance motors, ensuring the material advances on the screen surface and particles can fall through the mesh.

Advantages of Conventional Screens:

Simple design
High throughputs
Flexibility

Disadvantages of Conventional Screens:

Inefficient separation with low vibration amplitudes
Higher maintenance costs due to high wear
High energy consumption

Direct Excitation Screen Machines

In contrast to conventional vibratory screens, this technology directly excites only the screen mesh. This is achieved by special electromagnetic drives, known as ”Powerpacks.” The screen frame itself remains static.

Advantages of Direct Excitation:

Higher efficiency for fine separations
Lower mechanical stress and longer lifespan
Ease of maintenance
Energy savings

RHEWUM Solutions and Advantages:

High throughput capacity with models like the RHEsono®, RHEmoto®, or RHEfino®
Low operating costs due to high-quality materials
High operational reliability due to modular design
Flexible adjustment of vibration parameters during operation