Pneumatic knockers
Pneumatic knockers enable sticked material to detach from silo, container and pipe walls. Compressed air is injected under the piston and puts a spring under tension. After release of air, the piston moved by spring strokes the basis. The basis is equipped with an elastomer washer to protect stricken surface.
FKL in – type pneumatic knockers
Force and frequency of stroke variable.
Properties:
- two modes of action: single or interval impact mode,
- controlled power of stroke and controlled constant work,
- lubrication-free,
- working temperature from -40°C to 150°C,
- flexible range of applications.
Construction:
- four bolts attaching to the basis,
- anodized, hardened aluminum casing,
- steel piston,
- elastomer washer.
Usual applications:
Releasing sticked materials from silo and container walls, compacting and loosening bulk material.
Technical data
| Model | Working pressure [bar] | Work/Stroke [Nm] | Impulse/Stroke [Ns] | Air consumption [l/min] | Max. wall width [mm] | Weight [kg] |
| FKL 25 in | 3,0 – 6,5 | 1 – 5 | 0,5 – 1,0 | 0,07 – 0,2 | 2 | 1,03 |
| FKL 50 in | 3,0 – 6,5 | 5 – 15 | 1 – 3,5 | 0,1 – 0,3 | 3 | 1,85 |
| FKL 100 in | 4,0 – 6,5 | 10 – 50 | 1 – 10,5 | 0,5 – 1,1 | 5 | 4,5 |
| FKL 150 in | 5,3 – 8,0 | 50 – 140 | 1 – 29 | 1,2 – 2,0 | 8 | 9,5 |
| FKL 200 si | 7,5 | 100 – 200 | 1 – 57,5 | 2,2 – 3,3 | 12 | 14,8 |
FKL mi – type pneumatic knockers
Automatic control. Regulated stroke force.
Properties:
- wide range settings of stroke force and timing,
- wide range of application in industry.
Construction:
- the piston locks air vent with speed set on choking valve,
- anodized, hardened aluminum casing
- steel piston,
- elastomer washer.
Usual applications:
Broad field of application. Open air and humid environment, volatile atmosphere. Releasing sticked materials from silo, container, filter and pipeline walls, compacting and loosening bulk material.
Technical data
| Model | Working pressure [bar] | Work/Stroke [Nm] | Impulse/Stroke [Ns] | Frequency of impacts [min-1] | Air consumption [l/min] | Max. wall width [mm] | Weight [kg] |
| FKL 100 mi | 6 – 8 | 10 – 40 | 5 – 10 | 0,5 – 200 | 0,5 – 1,1 | 5 | 4,5 |
