Sealing discharging valve for gunpowder loading

The invention discloses a sealing discharging valve for gunpowder loading. The problem is solved that an existing valve is poor in sealing performance, and gunpowder is easily solidified when passingthrough the discharging valve. Switch-on and switch-off of a valve body are completed when a valve element pipe (8) ascends or descends in a valve element casing pipe (14); when the valve element pipe(8) ascends, gunpowder enters an inner cavity of the valve element pipe (8) from a top annular step feeding groove (18) in the upper top face of an annular hanging plate (17) of the top of the valvebody through a U-shaped feeding port (10) of the top of the pipe wall of the valve element pipe (8), when the valve element pipe (8) descends, the U-shaped feeding port (10) enters an inner cavity ofthe valve element casing pipe (14), a sealing cover (12) of the upper end of the valve element pipe seals a gunpowder loading channel, and a valve body heating sleeve (24) is arranged on the outer side wall of the valve element