Dynamic study on particle throwing motion of pulsating negative pressure shale shaker

Abstract

This research is based on a new drilling fluids circulation treatment device, which belongs to solid control system, namely pulsating negative pressure shale shaker. The purpose of this article is to better understand the operating principle and provide basis for setting working parameters and optimizing design. The above content depends on the dynamic analysis of the throwing motion of particles. To be specific, the motion equation of particle is established from the viewpoint of force state, and the influence of various parameters on particle conveyance velocity is discussed. Factors influencing the throwing index are also analyzed. Higher solid conveyance speed means higher handling capacity, but it also reduces the efficiency of particle dehydration; therefore, a trade-off should be considered among high removal efficiency, low energy consumption, and high handling capacity. The results show that negative pressure in pulsating form can effectively improve the disadvantage of low conveyance velocity of particles in constant negative pressure shale shaker.