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Pneumatic Linear Vibrators - NTP Series

Supplier: Vibration Systems & Solutions

Piston model are either non-impacting or impacting models, with the former being preferred for most applications.

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In both types, a piston reciprocates inside a cylinder with internal ports giving the back & forth motion without the need for special valve arrangements.

Impacting models have metal-to-metal contact at each end of the piston stroke, which can be noisy and increas stress on the hopper wall. Continuous impact models are also available with a small air cushion to limit the noise to some degree but this also limits the force output. These models can be adjusted for frequency but by their nature cannot be adjusted for amplitude.

Single impact models use a piston held against a spring by air pressure. On release of this pressure the spring impacts against a strike plate.

Pneumatic Linear Vibrators - NTP Series

  • Linear vibration
  • Nominal frequency from 1,328 min-1 to 8,784 min-1
  • Centrifugal force from 190 N to 2,039 N
  • Available in ATEX compliant or in stainless steel
  • Frequency and amplitude are adjustable separately

Applications
The pneumatic piston vibrators series NTP are especially suitable for knocking off material adhering to container walls in funnels, containers, silos and hoppers. They can be used as drives for vibrating tables and chutes and as assistance for emptying containers. Special features of NTP vibrators are: impacts like a rubber hammer or vibration with high peak acceleration.

Design and functioning principle
The vibration (linear) is produced by a freely vibrating differential pressure piston. In the standard version B+C the piston is knocking against an elastomer impact plate and works like a rubber hammer. In the version B without impact plate the piston works against an air cushion (noise reduced). The frequency can be adjusted by varying the pressure of the air supply and the amplitude by throttling the exhaust.

For operation a control valve is required (not included in scope of delivery). Lubrication-free operation is possible in compliance with the recommendations of Netter. ATEX compliant linear vibrators of the NTP series and units with stainless steel housing are available.

Permissible operating conditions Drive medium:
Compressed air or nitrogen (Filter ≤ 5 µm), preferably with oil mist

Operating pressure:
200kPa to 600kPa

Amvbient temperature:
5°C to 60°C

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