Improved discharging chute of converter

The utility model relates to an improvement on structures of discharging chutes of both a steel-making converter and a refining furnace, in particular to an improved discharging chute of a converter. The improved discharging chute of the converter comprises a discharging chute which is connected to the outlet of a discharging pipe, wherein a semicircular installing through slot axially penetrating through the discharging chute is formed at a junction of the discharging pipe and the discharging chute and on a seam of the lower semicircular interface of the discharging chute; the external diameter of the semicircular installing through slot is equal to the internal diameter of the discharging chute; a discharging liner plate with a baffle plate at the tail end is matched with and installed inside the installing through slot; and the cross section of the discharging liner plate is a semicircular arc surface. The service life of the discharging chute can be prolonged; failures of the discharging chute can be redu