APPARATUS FOR MECHANICAL SEWAGE TREATMENT Russian patent published in 2005 - IPC

FIELD: water treatment equipment, particularly for separating mechanical impurities from domestic and industrial sewage.

SUBSTANCE: apparatus comprises body rested upon support, grid adapted to perform continuous movement and formed as closed continuous chain with trapping hooks. Hooks are secured on rods forming grid web located on upper driving drum shaft and lower support drum shaft. Apparatus also has electric drive with rotary drive unit, grid cleaning device made as a bush of flexible bars and connected with above unit, as well as conveyer or special pack. Trapping hooks formed of sheet steel are secured to rods with two plastic bushes. Hook and bushes are connected one to another by pouring plastic material over hook along with bushes forming or hook is mechanically connected to bush so that hook and bushes are restrained from mutual rotation. Grid web and upper drum shaft are attached through star members installed on upper drum shaft and uniformly distributed through grid width. Body is provided with support plates located parallel to grid movement path and adapted for grid supporting. Apparatus also has drive for grid web movement speed regulation. Drive is made as electric drive having electric current frequency converter and level sensor to determine water level upstream and downstream the grid.

EFFECT: increased reliability, efficiency and service life.

3 cl, 4 dwg