Hydrocyclone

Hydrocyclone Introduction

The hydrocyclone is a device for separating and removing substances such as heavier coarse-grained silt from sewage, and sometimes used for mud dewatering..

Hydrocyclone working principle

the slurry goes into the cyclone along the tangential direction through feeding pipe, which forms high-speed rotary flow in the interior of the cyclone and produces great centrifugal force. At the center of the cyclone, rotary speed of slurry and centrifugal force reach the maximum value. As a result of the expansion of the slurry to the surroundings, a low pressure band is formed around the central axis. The air inhaled through the sinker mouth forms low pressure air column in the central axis. In addition to the tangential rotation movement, the slurry in the cyclone also has radial movement toward the center. Moreover, the slurry close to the center also has the upward movement along the axial direction while the peripheral slurry mainly makes downward movement toward the sinker mouth along the axial direction where there exists a zero point that the slurry will change the movement direction. The points are connected in the space to form an approximately conical surface, which becomes the zero velocity envelope surface. By means of the larger centrifugal inertial force, the medium and coarse particles in the slurry move outward and remain at the zero velocity envelope surface. With the downward movement of peripheral slurry, the medium and coarse particle minerals are finally discharged by the sinker mouth. The fine particles have slower centrifugal sedimentation speed, which are carried by the upward vortex and finally discharged by overflow pipe.

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