Mobile Metal Shredder with Dual-Stage Feed to Prevent Explosions

The patent applies preliminary action by introducing a slow-speed crushing stage before the high-speed shredding process. Material is first fed through rollers that crush it at low speed (2-3 rpm) to reduce size and eliminate flammable materials, then the crushed material is fed to the high-speed hammers (8-11 rpm) for final shredding. This preliminary low-speed processing eliminates the harmful effect of sparks and heat generation while maintaining high productivity in the subsequent shredding stage.

The patent merges the previously separate prior shredding machine and main shredding machine into a single integrated device. The slow-speed crushing rollers and high-speed hammer shredding system are combined in one machine, with material flowing continuously from the crushing section to the shredding section. This integration maintains the safety benefits of separate processing stages while reducing device complexity and eliminating the need for multiple standalone machines.

The patent applies dynamics by using a single motor that dynamically adjusts its power output through a variable-flow hydraulic clutch. The motor operates at full capacity during high-speed shredding when maximum power is needed, and automatically reduces power during low-speed crushing when less power is required. This dynamic power adjustment maintains adaptability for both functions while significantly improving energy efficiency compared to using an oversized motor at reduced capacity throughout.