Patent ID: 8789709

Claim:
A hydrocyclone for separating a liquid mixture into a heavy fraction including heavy particles and a light fraction, comprising a housing forming an elongated separation chamber having a circumferential wall, a base end, an apex end, at least one inlet member at the base end for supplying a liquid mixture into the separation chamber, a first outlet member for discharging separated light fraction from the separation chamber at the base end, a second outlet member for discharging separated heavy fraction from the separation chamber at the apex end, means for supplying the liquid mixture to the separation chamber via the at least one inlet member, so that during operation a liquid stream is generated as a helical vortex about a center axis in the separation chamber, said helical vortex extending from the base end to the apex end, a first flow deflection means arranged in the circumferential wall which comprises at least one member in the path of the liquid stream showing a decrease of the radius of the separation chamber, followed by an increase of the radius of the separation chamber, wherein the at least one member comprises a rounded curve portion for transporting the heavy particles.