English to German Tech/Engineering Engineering (general) Internals of glass-lined vessels

This is in a list of internals of glass-lined vessels in a power point presentation of a company that operates in glass-lining:

"
....
- Vortex Breakers
- Coated Baffles
- Ticklers
..."

In this case, tickler means relatively small impellers operating near the bottom of slurry-containing stirred-tank reactors and storage vessels.
Sometimes, they are also referred to as "kickers" but I have no idea what the correct technical term in German is.

Any help would be greatly appreciated. Thank you.