| 摘要 |
The invention relates to a device for the dosing of at least two products, e.g. at least one powdered product or a mixture of powdered products, known as an abrasive, and a liquid. The inventive device comprises at least one first tank (16) which can contain at least one first product (12), at least one first piston (20) which can release said at least one first product (12) from the first tank (16), and a cylinder (32) in which a second piston (22) moves in translation such as to define two chambers, one of which forms a second tank (18) which can contain a second product (14). According to the invention, a fluid is introduced into the other chamber (34) such as to ensure the translational movement of the second piston (22) in order to release the second product (14) from the second tank (18). Moreover, the pistons (20, 22) are kinemtaically linked so that the quantities of the mixed products (12, 14) are proportional. The invention is characterised in that the device also comprises means for filling the two chambers on either side of the second piston (22) with the second product (14). |
