Device for dosing solid particulate material

A dosing device (DOSDEV 2) for dosing solid particulate material (4-1) into a receptacle;

• the dosing device (DOSDEV 2) comprises a dosing element (1) which consists of an inner tube shaped extension (1-1) and an outer tube shaped extension (1-2), both extensions protrude downwards at a lower side of the dosing device (DOSDEV 2);
• the inner tube shaped extension (1-1) and the outer tube shaped extension (1-2) are coaxially aligned with respect to each other;
• the inner tube shaped extension (1-1) is located within the outer tube shaped extension (1-2);
• an outer diameter of the inner tube shaped extension (1-1) is smaller than an inner diameter of the outer tube shaped extension (1-2), whereby a space (SPACE 1-3) is formed between the outer tube shaped extension (1-2) and the inner tube shaped extension (1-1), the space (SPACE 1-3) extending circumferentially around the inner tube shaped extension (1-1);
• an inside of the inner tube shaped extension (1-1) forms a dosing chamber (1-4);
• an opening at a lower end of the inner tube shaped extension forms an opening (1-9) of the dosing chamber (1-4) at a lower end of the dosing chamber (1-4);
• a wall of the outer tube shaped extension (1-2) extends beyond a rim (1-7) of an end of a wall of the inner tube shaped extension (1-1) in an axial direction and has a bend (BEND 1-5) in an axial proximity of the end of the wall of the inner tube shaped extension (1-1), by the bend (BEND 1-5) the wall of the outer tube shaped extension (1-2) extends radially inwards at least partially around the end of the inner tube shaped extension (1-1);
• the outer tube shaped extension (1-2) ends with an opening whose diameter is smaller than the inner diameter of the outer tube shaped extension (1-2) axially before the bend (BEND 1-5);
• the space (SPACE 1-3) extends over an inner surface of the bend (BEND 1-5) and further onto a rim (1-6) of the end of the wall of the outer tube shaped extension (1-2), thereby radially inwards from the bend (BEND 1-5) the space (SPACE 1-3) ends in an opening slit (SLIT 1-8) between the end of the inner tube shaped extension (1-1) and the end of the outer tube shaped extension (1-2);
• the rim (1-6) of the end of the wall of the outer tube shaped extension (1-2) does not extend in a radial inward direction beyond an inner diameter of the end of the wall of the inner tube shaped extension (1-1);
• wherein after the bend (BEND 1-5) in the radially inward direction towards the end of the outer tube shaped extension (1-2), the wall of the outer tube shaped extension (1-2) ends with an angle (ANGLE) relative to the axial direction of the outer tube shaped extension (1-2);
• wherein the angle (ANGLE) is from 60 to 90°;
• and
• wherein the space (SPACE 1-3) is connected to a gas supply to selectively provide gas at a predetermined pressure to the slit (SLIT 1-8).