Magnetostrictive instrument floating ball lifting equipment and liquid level measuring system and method

The invention discloses magnetostriction instrument floating ball lifting equipment which comprises a driving device, a sealing pipe, an outer magnet, an inner magnet and a lifting device, the sealing pipe is connected to the top of a waste resin storage device in a sealed mode, and a channel which is communicated with the storage device and extends upwards is formed in the inner space of the sealing pipe; the outer magnet and the inner magnet are arranged outside and inside the sealing pipe respectively, the top end of the lifting device is connected with the inner magnet, the bottom end of the lifting device is located below a floating ball of the magnetostriction instrument in the storage device, and the driving device is used for driving the outer magnet to ascend and descend, so that the inner magnet in the sealing pipe is attracted through a magnetic field to drive the lifting device to ascend and descend. And the floating ball is lifted to rise or released. The floating ball lifting equipment for the m