The Effect Of Hydrocyclone Structure On Separation Efficiency

Date: 2024-12-20     From: Longding     Author: admin

The structural form of the hydrocyclone has a great influence on the separation efficiency. The cyclone is a highly efficient separation device that uses centrifugal force field to separate heterogeneous systems. It has simple structure, low cost, large processing capacity and high separation efficiency, and is widely used in many industrial fields such as chemical industry, petroleum, mining, etc.

The main structural forms of the feed pipe include involute type, tangent type, arc type, inclined 20° tangent type, spiral type, etc. Except for the spiral feed pipe structure, other feed pipe forms are not conducive to the separation of small-size solid particles, but the use of double-sided feeding or feed pipes with downward inclination can effectively reduce the energy consumption of the equipment.

The “cloak” type overflow pipe can significantly improve the separation efficiency of the cyclone for small particles. The bottom flow tube of the solid-liquid cyclone is the discharge port for solid particles, and the liquid content is small. The bottom flow tube of the cyclone is generally a straight round tube. However, in order to reduce energy consumption and improve production capacity, many new structures have emerged in recent years. Among them, when a gas blocking cone is added to the lower part of the straight underflow pipe, the classification efficiency is the highest and the classification particle size is the smallest.

The structure of the cone wall of the hydrocyclone has a great influence on its separation particle size. Traditional solid-liquid separation hydrocyclones generally adopt a single straight cone, and the inner surface of the cone wall is a continuous smooth surface, which is conducive to the separation of small solid particles. The parabolic cone structure can enable the cyclone to obtain the maximum total separation efficiency. Solid particles also have separation behavior in the cylindrical section. Numerical calculation results show that the tangential velocity of the fluid in the structure is slightly reduced, the residence time of the material in the cyclone is increased, small particles can be better separated, the separation efficiency is improved, and the energy consumption is reduced.