Reciprocating rake type

Grit separator mechanism id provided for removal of grits. It shall include Classifier type mechanism or Screw conveyor type mechanism.

Classifier type

  • The Grit scraping mechanism would be of centrally driven type with fixed full bridge spanning the tank diameter with necessary walkway and handrails to access drive unit at the centre.
  • Scraper Drive unit consisting of Drive head (Worm shaft & worm gear) connected to Gear Box by Chain & sprockets and the Gear box connected to Motor by Love joy Coupling.
  • Main Vertical solid shaft inserted into the Drive head gear bore and keys locked, suspended freely, flange facing downwards.
  • A Scraper arm shaft made out of Heavy duty pipe suspended from the vertical shaft.
  • Two Scraper arms, rigidly fabricated to sweep the grit to the grit sump with Scraper blades, Neoprene Rubber squeezes and Strips to hold Squeezes.
  • Reciprocating rake shall be mounted in the grit sump at inclination and operated by Geared motor with crank disc, reach rod assembly and angle lever for removing collected grits from sump bottom.
  • A cleaning arrangement shall be provided to remove organic particles from the grit and pumped back to the tank by an Organic pump. Pump has a vertical shaft with impeller connected to motor by pulleys and belt.