| 摘要 |
<p>The device (10) has a mobile piston (12) coupled with a dosage rod (31) with axial displacement of a linear batcher (30) of a solid substance constituted of divided particles in grain, granulated or power form. The dosage rod is activated by a mechanical actuator (32), and is associated to a return spring (35). The mobile piston is displaced in a direction, freely or against thrust of the spring, under effects of liquid solvents exerted to an inlet orifice (15) on the piston, and is displaced in opposite direction under effects of thrust of the spring exerted on the dosage rod.</p> |
