Patent ID: 7438810

Claim:
A sieve apparatus for treating wastewater delivered into a shaft for separating material from the wastewater, comprising: a supply device configured to deliver the wastewater into the shaft; a sieve device insertable into and movable vertically within the shaft, said sieve device further comprising a sieve surface disposed so as to receive wastewater from said supply device and remove material therefrom, and a connection device in liquid communication with said sieve surface that engages said supply device at an intersection whereby wastewater is delivered into said sieve surface; a worm conveyor disposed within the shaft and extending generally vertically from said sieve surface to transport the material separated out of the wastewater by said sieve surface; a fastening device configured within and fixed to the shaft to support said sieve device in an upright operational position, said fastening device comprising a guide system along which said sieve device moves vertically, said guide system arranged such that at a lowered operational position of said sieve device on said guide system, said connection device mates with said supply device and establishes a flow path for the wastewater into the sieve surface; and wherein said connection device forms a non-locking abutting interface with said supply device such that said sieve device is freely movable vertically away from said supply device without a further mechanical disconnection of said connection device from said supply device.