Gap mill
AssigneeBuhler AG
InventorArturo Bohm
Life of this patent
Estimating the term…
Abstract
Process and apparatus for reducing the size of particles of a flowable material. The process includes a stream of the fluid and the particles that is fed under pressure. The particles are subjected to expansion forces in a first dimension while they are simultaneously fed through at least one continuously narrowing constriction. While the particles in the fluid are conveyed through the narrowing constriction, they are subjected also to expansion forces in a second dimension. The apparatus may include a device which pressurizes the fluid and its particles which are fed through at least one inlet into a space. This space is defined from two sides only by at least one pair of opposing walls. Thus, the walls form a narrowing constriction up to a gap of smallest cross-section. This gap communicates with the outlet.
Claims23
An apparatus for at least one of comminuting, dispersing, disagglomerating and mixing flowing material, said apparatus comprising:
- a gap mill comprising a pair of cylindrical frustroconically shaped base bodies having a wide base surface and a truncated conical end, wherein each base body has an axially centered bore, said frustroconically shaped bodies being positioned so that said bores of said bodies are axially aligned, and form a thin gap between said truncated conical ends of said base bodies;
- and
- wherein an annular space is defined between said pair of base bodies of said gap mill.
An apparatus for at least one of comminuting, dispersing, disagglomerating and mixing flowing material, said apparatus comprising:
- a cylindrical frustroconically shaped body having a wide base surface, truncated conical end, and an axially centered bore;
- and
- a planar body;
- said cylindrical frustroconically shaped body and said planar body being arranged to form an annular space, and a thin gap between said truncated conical end and said planar body.
A process for reducing a size of particles of a flowable material in a streaming fluid in an apparatus for at least one of comminuting, dispersing, disagglomerating and mixing flowing material, wherein the apparatus comprises a gap mill comprising a pair of cylindrical frustroconically shaped base bodies having a wide base surface and a truncated conical end, wherein each base body has an axially centered bore, said frustroconically shaped bodies being positioned so that said bores of said bodies are axially aligned, and form a thin gap between said truncated conical ends of said base bodies, wherein an annular space is defined between said pair of base bodies of said gap mill, the process comprising:
- conveying the streaming fluid and the particles of flowable material under pressure;
- subjecting said particles to expansion forces in a first dimension while simultaneously feeding the streaming fluid and the particles through the annular space;
- and
- subjecting said particles to expansion forces in a second dimension while being conveyed through the annular space.
A process for reducing a size of particles of a flowable material in a streaming fluid in an apparatus for at least one of comminuting, dispersing, disagglomerating and mixing flowing material, wherein the apparatus comprises a cylindrical frustroconically shaped body having a wide base surface, truncated conical end, and an axially centered bore, a planar body, the cylindrical frustroconically shaped body and the planar body being arranged to form an annular space, and a thin gap between the truncated conical end and the planar body, the process comprising:
- conveying the streaming fluid and the particles of flowable material under pressure;
- subjecting said particles to expansion forces in a first dimension while simultaneously feeding the streaming fluid and the particles through the annular space;
- and
- subjecting said particles to expansion forces in a second dimension while being conveyed through the annular space.
An apparatus for reducing a size of particles of a flowable material in a streaming fluid, the apparatus comprising:
- a first body comprising a first surface which is at least one of curved and straight, a base portion, and an opening which defines an outlet for the flowable material;
- a second body comprising a second surface which is one of curved and straight;
- a narrowing space being defined between the first surface and the second surface;
- the narrowing space having an inlet end and an outlet end and narrowing from the inlet end to the outlet end;
- and
- a thin gap being disposed at the outlet end of the narrowing space,
- wherein the outlet for the flowable material communicates with the thin gap, and
- wherein the first body and the second body are at least one of non-rotatably mounted to each another and fixedly mounted to each other.
Dependencies are inferred from the claim text.