HELICAL FLOAT

A helical float, comprising a float body (1), wherein a thread groove (2) is formed in the float body (1), a connecting float tail (3) is fixed to the top of the float body (1), and a plurality of series-connected calibration float tails (4) are detachably connected to the connecting float tail (3); each calibration float tail (4) comprises a calibration float tail body (41), and threaded tabs (42) are fixed to the upper part of the calibration float tail body (41); a float foot (5) is fixed at the bottom of the float body (1); a plurality of counterweight rings (6) are detachably connected to the float foot (5). According to the float, the sinking depth of the helical float can be quickly determined by observing the float tail (3), and the calibration float tails (4) are detachable and can be added or replaced according to needs; the float is provided with the detachable counterweight rings (6), so that the counterweight of the float can be conveniently adjusted according to needs and the float is in a prese