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US 7,621,473 B2Granted
Ring jet nozzle and process of using the same
AssigneeE. I. Du Pont de Nemours and Company
InventorWilliam Edward Capelle, Jr.
Life of this patent
Estimating the term…
Abstract
The embodiments of the present invention relate to a ring jet for use in fluid energy mills. In particular, the embodiments relate to a spiked nozzle containing a nozzle plug forming a fluid compression orifice in form of a partial annulus, to accelerate a grinding fluid used in reducing the particle size of particulate matter. Such ring jets are placed in a circular ring configuration about the outer wall of the fluid energy mill.
Claims8
A ring jet, comprising:
- (a) a cylindrical member having an inner face and an outer face, and a first end and a second end, thereby defining a hollow interior wherein said cylindrical member has a cowl lip configuration at said second end;
- and
- (b) a fluid acceleration region at said second end of said cylindrical member, comprising:
- (i) a nozzle plug at said second end of said cylindrical member, comprising a means for securing said nozzle plug to said cylindrical member, a partially-cylindrical portion connected to said means for securing said nozzle plug to said cylindrical member, said partially-cylindrical portion having an upstream end proximate to said means for securing said nozzle plug and a downstream end closer to said second end, and a ramped portion connected with said downstream end of said partially-cylindrical portion, said ramped portion having a proximal end and a distal end;
- and
- (ii) a fluid compression orifice defined by said ramped portion of said nozzle plug and said cowl lip of said cylindrical member, wherein said compression orifice is in a ‘C’ shape when viewed into said ring jet at said second end.
3 more elements
A fluid energy mill comprising at least one ring jet at an angle, in a ring configuration, along the outer wall of said fluid energy mill,
- wherein said ring jet comprises:
- (a) a cylindrical member having an inner face and an outer face, and a first end and a second end, thereby defining a hollow interior wherein said cylindrical member has a cowl lip configuration at said second end;
- and
- (b) a fluid acceleration region at said second end of said cylindrical member, comprising:
- (i) a nozzle plug at said second end of said cylindrical member, comprising a means for securing said nozzle plug to said cylindrical member, a partially-cylindrical portion connected to said means for securing said nozzle plug to said cylindrical member, said partially-cylindrical portion having an upstream end proximate to said means for securing said nozzle plug and a downstream end closer to said second end, and a ramped portion connected with said downstream end of said partially-cylindrical portion, said ramped portion having a proximal end and a distal end;
- and
- (ii) a fluid compression orifice defined by said ramped portion of said nozzle plug and said cowl lip of said cylindrical member, wherein said compression orifice is in a ‘C’ shape when viewed into said ring jet at said second end;
- wherein said nozzle plug is truncated to be flush with the outer wall of said fluid energy mill.
5 more elements
A method of reducing the size of particulate matter comprising:
- (a) supplying a first grinding fluid to a feed jet;
- (b) delivering a particulate matter feed stream comprising a particulate matter, to said feed jet having said first grinding fluid exiting therefrom;
- (c) leading said particulate matter and said first grinding fluid through a feed tube into a fluid energy mill, said fluid energy mill comprising at least one ring jet at an angle, in a ring configuration, along the outer wall of said fluid energy mill, wherein said ring jet comprises:
- (i) a cylindrical member having an inner face and an outer face, and a first end and a second end, thereby defining a hollow interior wherein said cylindrical member has a cowl lip configuration at said second end;
- and
- (ii) a fluid acceleration region at said second end of said cylindrical member, comprising:
- (A) a nozzle plug at said second end of said cylindrical member, comprising a means for securing said nozzle plug to said cylindrical member, a partially-cylindrical portion connected to said means for securing said nozzle plug to said cylindrical member, said partially-cylindrical portion having an upstream end proximate to said means for securing said nozzle plug and a downstream end closer to said second end, and a ramped portion connected with said downstream end of said partially-cylindrical portion, said ramped portion having a proximal end and a distal end;
- and
- (B) a fluid compression orifice defined by said ramped portion of said nozzle plug and said cowl lip of said cylindrical member, wherein said compression orifice is in a ‘C’ shape when viewed into said ring jet at said second end;
- wherein said nozzle plug is truncated such that it is flush with the outer wall of said fluid energy mill;
- (d) providing said ring jets with a second grinding fluid;
- and
- (e) dispersing said particulate matter at an intersection of said grinding fluid and said particulate matter feed stream within the fluid energy mill.
10 more elements
Dependencies are inferred from the claim text.