关键词: 振动筛, 筒式筛网, 固相运移, 动力学, 试验

Abstract: A new kind of roller structure screen of drilling fluid shaker was introduced.When this kind of screen works,it vibrates with the shaker deck and slowly rotates around its axis.So,it can be cleaned by itself and improve screenging efficiency greatly.In order to quantitatively analyze the regular conveyance pattern of solid grain on the roller screen,the forces acted on solid grains on the screen were analyzed.The model for solid-phase conveyance dynamics was built.The throwing coefficient,conveyance velocity of solid grain on roller screen and their calculating methods were given.The influence of rotating angle velocity of roller screen on solid-phase conveyance velocity was discussed.The formula for calculating the maximum rotating angle velocity of roller screen was presented.The calculating results are coincident with the experimental results.The research conclusions can be applied to selection of structural parameters and dynamic parameters in the design of roller screen shale shaker.

Key words: shale shaker, roller screen, solid-phase conveyance, dynamics, experiment