Digital Monitoring of Vibration Sifters and Conveyors

Measuring actual stroke lenght in mm using PCH 1106 Compact Vibration Sensor on oscillating machines.
 

Is overload of your vibration sifter or conveyor a risk in your process?

An overloaded vibration sifter or conveyor can break down, resulting in costly production stops. By digitally monitoring the actual stroke length of the oscillating machine, you can optimise your process and adjust either feeding parameters or the actual machine capacity.
 

Optimising your process requires adequate knowledge. Often, you can visually monitor an oscillating machine by video cameras and manually prevent production stops. However, this requires that a member of staff continually monitors the machinery, and overload problems are often detected too late.

PCH 1106 continuously monitors the actual stroke length of the oscillating machine digitally. Hence, even small changes in the actual machine performance are detected instantaneously.
 

In Danish energy company Orsted's waste-to-energy plant, garbage is separated in a vibration sifter. A process silo conveys garbage into the vibration sifter where solid materials and fluids are separated.

If the solid material starts to block the vibration sifter, the vibration monitor detects a drop in stroke length, sending a digital signal to the process silo, which lowers its output to the sifter. Now, the vibration sifter will receive less garbage for a short period, and the machine overload and resulting production stop is prevented.
 

The red curve shows the exact stroke length of the vibration sifter and the black curve shows the regulated output of the process silo. When the stroke length drops to 14.4 mm the output is lowered until the stroke length increases again. Should the stroke length not increase after a preset period of time, an alarm is activated.