| 摘要 |
<p>A dosing device (1) for feeding doses of a grained, pelletized or granulated material out from a container, especially for dosing pelletized fish fodder from a silo. A pipe (10) adapted to suck pellets (3) out from the container/silo (2), is provided with a valve adapted to change between opening or closing at least one gate in the pipe wall. When the valve is open, the air flow through the pipe's (10) open end is reduced, such that pellets are not sucked into the pipe. The valve may consist of a sleeve (12) displaceable between two end positions by supplying pressurized air to an actuator (15, 17, 18, 19, 20). The sleeve is provided with holes (13) which, in one end position of the sleeve (12), overlap holes (11) in the pipe (10). A screen (14) prevents pellets from coming into contact with the sleeve (12).</p> |
