System and method for sludge removal in a circular settling tank
AssigneeNordic Water Products AB
InventorBertil Ljungberg
Life of this patent
Estimating the term…
Abstract
A system for sludge removal in a circular settling tank having a side wall (106) comprises a rotatable drive ring (130) adapted to be interconnected to a scraper arm provided with scraper blades, wherein the drive ring having a plurality of engagement surfaces (134) A traction assembly (140) is fixedly attached to the side wall and comprises a drive wheel (142). By providing a drive wheel with a plurality of engagement rolls (148) adapted to engage the engagement surfaces of the drive ring during rotation of the drive wheel, the drive ring can be rotated essentially without exerting any radial forces on the drive ring.
Claims10
A system for sludge removal in a circular settling tank having a side wall, the system comprising:
- a rotatable drive ring adapted to be connected to a scraper arm provided with scraper blades, the drive ring having a plurality of engagement surfaces,
- a traction assembly comprising a drive wheel,
- wherein the drive wheel is provided with a plurality of engagement rolls adapted to engage the engagement surfaces of the drive ring during rotation of the drive wheel.
A method of rotating a circular object, comprising the following steps:
- providing spaced apart engagement surfaces on the circular object,
- providing a drive wheel with a plurality of engagement rolls adapted to engage the engagement surfaces, and
- rotating the drive wheel.
Dependencies are inferred from the claim text.