US 5,340,036 A · Dry waste grinder

Abstract

A grinder for dry waste materials includes a vertically-oriented, cylindrically-shaped housing having an opening at its upper end for receiving materials to be comminuted. The shredder element has upwardly-extending impeller blades disposed on its upper surface. The outer perimeter of the shredder element is separated from the inner wall of the housing sufficiently to provide a gap through which comminuted materials can drop from the upper chamber to the lower chamber of the housing. The interior of the upper portion of the housing is provided around its circumference with diverget blades that are angled downwardly in the direction of rotation of the shredder element. The lower housing has a closed bottom and a tangentially oriented discharge element for discharge from the lower housing of comminuted materials. The shredder element has downwardly-extending paddles on its lower surface that extend downwardly into the lower housing and are adapted to sweep the lower housing, act as an air blower and expel comminuted materials therefrom. Optionally the shredder element is flattened on opposite sides, to provide enlarged openings for movement of comminuted materials from the upper chamber into the lower chamber. The upwardly-extending impeller blades may optionally be Z-shaped.

Claims8

Dependent claims

A grinder for dry waste materials comprising:

a vertically-oriented, cylindrically-shaped housing having an opening at its upper end for receiving materials to be comminuted,
said housing being divided into upper and lower chambers by means of a rotatable, disk-shaped shredder element,
said shredder element having upwardly-extending impeller blades disposed on its upper surface, the outer perimeter of said shredder element being separated from the inner wall of said housing sufficiently to provide a gap through which comminuted materials can drop into said lower chamber,
diverter bladed uniformly spaced around the inner perimeter of said upper portion of said housing and being angled downwardly in the direction of rotation of said disk-shaped shredder element,
said lower chamber having a closed bottom and a discharge outlet for discharge therefrom of comminuted materials, said discharge outlet being tangentially oriented relative to the circumference of said cylindrically-shaped lower chamber,
said shredder element having downwardly extending blades on its lower surface, said blades having an area adapted to sweep said lower chamber and expel comminuted materials therefrom outwardly through said tangential opening,
said shredder element being connected by a central shaft to a means to rotate said element.

4 more elements

Dependencies are inferred from the claim text.

Dry waste grinder

Life of this patent

Dry waste grinder

Life of this patent

Abstract

Claims8