The utility model discloses a supporting structure for mounting a
gate valve barrel of an extruder, which is applied to the field of supporting structures and comprises a base, a guide groove is formed in the top of the base, and two connecting seats are slidably connected into the guide groove; by arranging the supporting seat, the connecting plate, the supporting rod, the
threaded rod, the nut, the connecting seat, the guide groove and the base, a
gate valve can be mounted and supported, so that the
gate valve is prevented from being lifted by a worker all the time, the
physical strength of the worker for lifting the gate valve for a long time is reduced, the mounting difficulty of the gate valve is reduced, and convenience is provided for mounting of the gate valve; a driving motor is arranged to drive a connecting rod, a second
bevel gear, a first
bevel gear, a rotating rod and a
threaded rod to rotate, and the
threaded rod rotates to drive a nut to drive a supporting rod, a connecting plate at the top of the supporting rod, a supporting base and a gate valve supported by the top of the supporting base to conduct vertical height adjusting movement. Therefore, the mounting and supporting requirements of the gate valve at different heights can be met.