复合轨迹振动筛的工作原理及计算机模拟

WORKING PRINCIPLE OF A COMPLEX TRACK SHAKER AND ITS COMPUTER SIMULATION

为了提高钻井液振动筛的工作效率,设计了一种复合轨迹振动筛。根据钻井液振动筛动力学的基本原理,分析了该筛的工作原理,并采用计算机模拟对其筛面运动进行分析。模拟计算结果表明筛面上各点可实现不同的直线运动轨迹,且在筛箱入口端有较大的抛掷指数,以加速钻井液中固相和液相的分离,在出口端有较大的输送速度,以加速把固相岩屑输送出筛面,防止固相岩屑透筛。该筛可提高振动筛钻井液的处理能力和分离效果;设计时激振力作用线应向筛箱入口端移动,且不能超过极限位置,同时,激振力作用线不能向筛箱出口端移动。

In order to increase sieving efficiency of drilling fluid shale shaker, a new complex track shale shaker was put forward. On the basic kinetic principle of drilling fluid shale shaker, the working principle of the shaker was introduced, and its motion was analyzed by computer simulation. The computer simulation results show that the points on the screen can obtain different line trace, the points at the entrance have larger throwing index, so it can accelerates the separating of solid and liquid, and the points at the exit have larger conveying speed, so the solid particle can slide out off the screen quickly, and it cannot pierce the screen. All these can increase its handling capacity and sieving efficiency. The action line of the exciting force should be moved toward the entrance and should not exceed its limit position, at the same time, the action line of the exciting force should be not moved toward the exit.