自力式机械滤池是采用简单的有程序动作编排的自力式机械装置来实现主程序自动控制的新发明,同时采用的其他发明有:反冲阻流器、提拉阀、自动调节活动堰板,其工作周期、膨胀率、反冲时间可以进行 Self-acting mechanical filter is a new invention of automatic control of the main program by simple self-operated mechanical device with program action arrangement. Other inventions adopted at the same time are: recoil baffle, lifting valve, self-regulating movable weir , Its work cycle, expansion rate, recoil time can be carried out