Volumetric bottle head

The utility model provides a volumetric bottle head which comprises a positioning piece, a positioning sleeve, a first adjusting piece, a second adjusting piece, a base, a distributor and a collector, the positioning piece is sleeved on the outer side of the positioning piece, the outer wall of the positioning piece is provided with a sliding groove along the axial direction, the inner wall of the positioning sleeve is provided with a sliding block along the axial direction, and the positioning piece and the positioning sleeve are movably connected through the structure of the sliding block and the sliding groove. A first cover plate is arranged at the bottom of the positioning piece, a connecting shaft vertically penetrates through the circle center of the first cover plate, and the distributor is fixed to the upper end of the connecting shaft; by means of the three-layer discharging structure of the inlet hole, the material collecting hole and the outlet hole and the staggered arrangement of the material co