| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a feeder of powder and granular materials that can satisfactorily prevent or suppress powder dust from the powder and granular materials from being scattered to the outside of the device, when charging the powder and granular materials, and also has a compact structure and can be inexpensively manufactured.SOLUTION: A feeder 10 of powder and granular materials includes: a hopper body 12 having an internal space 18 for charging the powder and granular materials, and having an input port 20 opened at an upper end and a discharge port 22 opened at a lower end; three-dimensional shape filters 14 for sucking powder dust of the powder and granular materials, disposed in the internal space 18 of the hopper body 12 and forming a drop cavity 32 of the charged powder and granular materials, and having a hollow body formed in a hollow in optional three-dimensional shape and provided with a filter on a surface; and a suction unit 16 in communication and connection with the three-dimensional shape filters 14, and making the powder dust be carried on the surfaces of the three-dimensional shape filters 14.</p> |
