Material channel adjusting device

The utility model provides a material channel adjusting device which comprises a bottom frame, an installation middle plate used for installing a power box is arranged above the bottom frame, a plurality of fixing plates are sequentially arranged above the bottom frame and located on the two sides of the installation middle plate outwards, and one side of each fixing plate is provided with a worm reducer through a support. A cavity used for installing a worm gear is formed in the worm reducer, one side of the worm gear is connected with a worm in a meshed mode, and the worm is connected with a rotating shaft through a connecting piece. The inner side of the worm gear is provided with an internal thread matched with the screw rod, the lower end of the screw rod is fixed to the upper end of the lifting plate through a connecting frame, and an air cylinder is arranged below the lifting plate. According to the feeding device, the diameters of the pipes can be processed according to needs, the material channel can