One-way spiral conic regulating rod

The utility model relates to a one-way spiral conical regulating rod which is especially used on a clogging device. The utility model mainly solves the defect that the existing regulating rod of the clogging device is not easily butt-jointed with a measuring and regulating instrument and is easily deformed because of the smashing of a butt joint of the measuring and regulating instrument. The utility model is characterized in that a salvage neck (2) is fixed at the top end of the rod; a one-way spiral head (1) is fixed on the salvage neck; a spring base in which a spring (3) is arranged, and a locking ball seat (4) are orderly fixed on the lower end of the rod; the spring acts on the spring base (3) to make the locking ball seat (4) move downwards to push a steel ball out. The utility model can reduce the impact force at the time of butt-joint and is convenient to obtain the butt-joint of the clogging device and the measuring and regulating instrument.