Compressed air interval knocker

PS series air-intermittent impactors are particularly suitable for knocking off adhesions on walls, pipes and containers that are difficult to detach, and as crushers in the event of bridging in bulk material storage facilities and silos. The impact pulse causes optimal detachment or causes existing material bridges to collapse.

The compressed air impactors are particularly suitable for retrofitting to silos and hoppers already in operation, as neither emptying of the bin nor drilling of the bin wall is required for installation.

They support the material flow, loosen adhesions and are used for targeted bridge collapse. The knocker has an integrated compressed air reservoir. The stored compressed air is released pneumatically or electrically, depending on the design, and causes a piston to impact a steel plate (included in the scope of delivery). The hammer-blow-like impulse thus generated destroys bridges permanently.

In principle, the compressed air interval beaters are suitable for all container shapes and sizes. If it is not possible to install a compressed air knocker due to the structural conditions (as may be the case, for example, with a silo made of concrete), compressed air cannons can be used, depending on the type and nature of the bulk material.

Application

• knocking off adhesions on the walls of bunkers, hoppers, containers and silos
• as a discharge aid in the case of venting, bridging and problems with residual emptying of containers
• Maintaining the flow of material and clearing product jams

Function

PS series pneumatic intermittent knockers have a reservoir for the compressed air and a spring-returned piston that strikes the weld-on plate supplied. They can be activated either purely pneumatically or electro-pneumatically. After activation, a diaphragm valve releases the compressed air contained in the reservoir to the piston, which then strikes the plate welded to the silo or hopper. As a result of the strong impact, the adhering or bridging product inside the hopper detaches and falls down towards the discharge. Our pneumatic beaters can be equipped with an automatic working time-pause control, which allows self-sufficient operation. The time intervals can be set by the user in the range of seconds to several minutes.

Pressure/Temperature

Compressed air knockers are operated with 3 to 6 bar of compressed air. By throttling the air supply, the impact energy can be increased/decreased and adapted to the application.

The operating temperature range is -20°C to +80°C.

Performance data & technical features

• available in 3 different sizes
• guaranteed lifetime at maximum pressure: 150,000 impacts
• operating temperature: -20°C to 80°C
• operating pressure: 3 – 6 bar
• impact energies: 8.4 – 153 J