Pneumatic piston vibrators are basically an oscillating piston inside a cylinder.There are no valves required to change the piston direction and the units are completely self-contained. Depending on the model, the piston bodies are steel or aluminium with many models being available in stainless steel to handle aggressive wash down environments. In all models frequency and force is changed by adjusting the inlet air pressure, with amplitude changes by throttling the exhaust air flow in many models.
In non-impacting types, a self-generated air cushion eliminates metal-to-metal impact at each end of the piston stroke, reducing noise levels and stress on the hopper wall. Throttling the exhaust air flow with the supplied exhaust restrictor will increase the air cushion at each end of the stroke and reduce the amplitude of the vibrator. While many companies adapt and modify impact models, all our non-impacting units are specifically designed to operate that way.
Impacting models operate in a similar manner but the piston hits a metal strike plate to give a solid metal-to-metal impact. Some models have an elastomer insert to reduce noise, while still giving good force.
The pneumatic linear vibrators series NTS and NTK are suitable for a broad range of applications, including conveying, compacting, and loosening bulk material. They are especially useful for helping damp materials or larger size product flow from hoppers and chutes. They are also used as drives for vibrating tables, feeders and conveyors.
This model utilises air pressure to hold a piston against a spring in the cylinder. On release of the pressure, the spring ‘fires’ the piston against the impact plate.
VSS high-quality P and NTP series vibrators are great for moving damp and sticky material from hoppers and down chutes.
PKL models were developed to remove ‘skins’, as in spray dryers, from hopper walls.
For more information about our pneumatic non-impacting vibrators, call our friendly team today on 1800 300 877.