Garbage supply device

A garbage supply device that supplies waste to a gasification furnace gasifying waste, the garbage supply device comprising:

• a casing;
• two feed screws provided in the casing;
• a middle shaft that is located between the two feed screws, has a plurality of protrusions, and is repetitively rotated forward or backward;
• and
• a hood provided above shaft sealing parts and covers the shaft sealing parts, the shaft sealing parts being provided between rotation axes of the feed screws and the casing, and the shaft sealing parts being provided between rotation axes of the middle shaft and the casing,
• wherein the hood is configured of a hood main body and a pipe connected to the hood main body,
• wherein the shaft sealing parts include a packing main body, a ground packing, and a lantern ring,
• wherein the packing main body is arranged between a through-hole formed in the casing and the rotation axes of the feed screws and the middle shaft, and covers a portion which constitutes an outer circumferential surface of the rotation axes and faces the through-hole throughout a circumference thereof,
• wherein the ground packing and the lantern ring are interposed between the packing main body and the rotation axes,
• wherein the packing main body is provided with an oil supply passage configured to lubricate the lantern ring,
• wherein a gas in the hood is drawn by suction fans and flows into a downstream appliance.