Feeding and dosing apparatus for irrecoverable unsorted waste

An irrecoverable-waste feeding and metering apparatus (10) comprising:

• a loading hopper (12) having a mixing compartment (13) and a discharge duct (14) which extends between said mixing compartment (13) and its discharge mouth (141), for discharging material from the latter;
• a central auger (15) and two lateral augers (16, 17);
• where said central auger (15) extends into said discharge duct (14) and into said mixing compartment (13) and said lateral augers (16, 17) are arranged inside said mixing compartment (13) each on one side of said central auger (15);
• a transfer device (18) having a feed channel (19) which has a loading portion (191) and a feeding portion (192);
• wherein said transfer device (18) comprises two mutually parallel transfer augers (20, 21), which extend from said loading portion (191) along said feed channel (19) and which each have a first helicoid (201, 211);
• where the first helicoid (201) of a first one (20) of said transfer augers (20, 21) has a direction opposite to that of the first helicoid (202) of the second one (21) of said transfer augers (20, 21);
• where said loading portion (191) faces the discharge mouth (141) of said discharge duct (14) in order to receive material from the latter,
• wherein said transfer augers (20, 21) have a second helicoid (202, 212) and a helicoid-free section (203, 213), wherein each of said transfer augers (20, 21) has its first helicoid (201, 211) which has an opposite direction to that of its second helicoid (202, 212);
• said transfer augers (20, 21) have said first helicoid (201, 211) which extends from said loading portion (191) to a first end of said feeding portion (192), said helicoid-free section (203, 213) which faces said feeding portion (192) and said second helicoid (202, 212) which extends from a second end of said feeding portion (192), where said second end is opposite to said first end.