Screen device
AssigneeAikawa Iron Works Co., Ltd.
InventorYoshihiko Aikawa
Life of this patent
Estimating the term…
Abstract
A screen device includes a screen for receiving papermaking raw materials and a stirring member facing an outer surface or inner surface of the screen and rotating to wash a mesh of the screen, so that foreign materials are removed from the papermaking raw materials. The screen includes slits elongated in a longitudinal direction formed by elongated members. The slit is defined by a first screen surface and a second screen surface facing each other. Recess portions are formed at least in the first screen portion surfaces, and each disposed at a position closer to a narrowest facing portion between the first and second screen surfaces relative to an outlet of the first and second screen surfaces through which the papermaking raw materials flow out.
Claims7
A screen device for removing foreign materials from papermaking raw materials, comprising:
- a plurality elongated members arranged parallel to each other, at least one elongated member having a first screen surface and at least another elongated member situated adjacent to the at least one elongated member having a second screen surface so that the first screen surface and the second screen surface face each other to form a slit for passing the papermaking raw materials therebetween, at least one of the first and second surfaces having a recess portion extending along a longitudinal direction thereof.
Dependencies are inferred from the claim text.