| 摘要 |
<p>Device for the variable metering, rapidly and with great precision, of dyes in powder, grain or microparticle form, comprising: a container (1) for the dye which is placed under reduced pressure by means of a suction channel (7) from the outside, a grid screen (5) fastened to the base of the container (1), a scraper (2) rotating on the screen (5) at variable speed, a compass-type shutter with variable opening and mounted below the screen (5), a precision balance (20) located below the shutter (6), and a programmable electronic computer (30) for monitoring and controlling the speed of rotation of the scraper (2), the opening/closing of the shutter (6) and the weighing value of the balance (20). <IMAGE></p> |
