The resonant screen operates under near-resonance conditions. The amplitude of the screen’s vibration is directly affected by the operating frequency of the vibration zone. Even a slight change in frequency can cause significant fluctuations in the amplitude, leading to instability. The spring system used in the resonant screen operates on a non-linear vibration principle, a crucial factor in its operation within the resonance zone. According to mechanical vibration theory, in a non-linear vibration system, the screen’s natural frequency can change according to variations in amplitude. Another characteristic of non-linear vibration is that it stabilizes the amplitude of the screen near the central resonance zone, thus improving production efficiency.

When the resonant screen is working, the screen box moves, and the spring is compressed, storing potential energy. When the screen box moves in the opposite direction, the spring releases all the stored potential energy, converting it into the kinetic energy of the screen box to support the operation of the resonant screen. The working system of the resonant screen adopts a motion mode of mutual conversion between potential energy and kinetic energy, thereby reducing the energy consumption during mechanical operation.

In summary, the advantages of resonant screens include high productivity and screening efficiency, low power consumption, large amplitude, and low dynamic load transmitted to the foundation, making their development prospects promising. However, the complex structure, large machine weight, difficulty in stabilizing the amplitude during operation, complex adjustment, and susceptibility to damage to the screen box components due to high impact loads limit the application range of this equipment. These shortcomings will drive future research and improvement efforts to expand the application scope and achieve more stable dynamic energy for resonant screens.