The current invention provides an improved jet nozzle suitable for use in a micronizing jet mill or retrofitting to an existing jet mill. The improved jet nozzle incorporates a coanda effect inducing element to enhance entrainment of particles to be ground within the vortex created by the micronizin
The current invention provides an improved jet nozzle suitable for use in a micronizing jet mill or retrofitting to an existing jet mill. The improved jet nozzle incorporates a coanda effect inducing element to enhance entrainment of particles to be ground within the vortex created by the micronizing jet mill. When the jet mill uses steam to generate the jet, use of the improved nozzle will reduce energy costs by increasing the efficiency of the jet mill.
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We claim: 1. A jet nozzle for use in a micronizing jet mill comprising: a nozzle body having a first open end and a second open end with a passageway joining said first and second ends; a coanda effect inducing element positioned within said passageway and extending outward from said second end of
We claim: 1. A jet nozzle for use in a micronizing jet mill comprising: a nozzle body having a first open end and a second open end with a passageway joining said first and second ends; a coanda effect inducing element positioned within said passageway and extending outward from said second end of said nozzle. 2. A jet nozzle for use in a micronizing jet mill comprising: a nozzle body having a first open end and a second open end with a passageway joining said first and second ends; a coanda effect inducing element positioned within said passageway and extending outward from said second open end of said nozzle wherein said coanda effect inducing element has a geometric configuration corresponding to the geometric configuration of said second open end of said nozzle. 3. A jet nozzle for use in a micronizing jet mill comprising: a nozzle body having a first open end and a second open end, said first and second ends being joined by a passageway passing through said nozzle, wherein said second open end has a slot-like configuration; a coanda effect inducing element positioned within said passageway, said coanda effect inducing element extending outward from said nozzle through said second end, wherein said coanda effect inducing element has a configuration substantially similar to the slot-like configuration of said second open end. 4. A jet nozzle for use in a micronizing jet mill comprising: a nozzle body having a first open end and a second open end, said first and second ends being joined by a passageway passing through said nozzle, wherein said second open end has a slot-like configuration defined by two longer, essentially inwardly hyperbolic sides and opposing generally rounded ends; a coanda effect inducing element positioned within said passageway, said coanda effect inducing element extending outward from said nozzle through said second end, wherein said coanda effect inducing element has a configuration substantially similar to the slot-like configuration of said second open end. 5. A jet nozzle for use in a micronizing jet mill comprising: a nozzle body having a first open end and a second open end, said first and second ends being joined by a passageway passing through said nozzle, wherein said second open end has a slot-like configuration defined by two longer, essentially inwardly hyperbolic sides and opposing generally rounded ends; a coanda effect inducing element positioned within said passageway, said coanda effect inducing element extending outward from said nozzle through said second end, wherein said coanda effect inducing element has a configuration substantially similar to the slot-like configuration of said second open end, said coanda effect inducing element extends outwardly from said second open end of about 2.5 mm to about 38.1 mm. 6. A jet nozzle for use in a micronizing jet mill comprising: a nozzle body having a first open end and a second open end, said first and second ends being joined by a passageway passing through said nozzle, wherein said second open end has a slot-like configuration defined by two longer, essentially inwardly hyperbolic sides and opposing generally rounded ends; a coanda effect inducing element positioned within said passageway, wherein the exterior surface of said coanda effect inducing element and the interior surface of said slot-like opening define a gap, said coanda effect inducing element extending outward from said nozzle through said second end, wherein said coanda effect inducing element has a configuration substantially similar to the slot-like configuration of said second open end and wherein the portion of said coanda effect inducing element which conforms to the configuration of said second open end extends into said passageway a distance ranging from about ten times said gap to about 20 times said gap. 7. A jet nozzle for use in a micronizing jet mill comprising: a nozzle body having a first open end carrying interior threads and a second open end having a slot-like opening, said first and second ends being joined by a passageway passing through said nozzle; a coanda effect inducing element positioned within said passageway and extending outward from said nozzle through said second end, wherein said coanda effect inducing element has an external geometric configuration substantially conforming to the internal configuration of said slot-like opening of said second end of said nozzle body and wherein the exterior surface of said coanda effect inducing element and the interior surface of said slot define an air passage; and, a coanda effect inducing element retainer positioned within the first end of said nozzle, thereby securing said coanda effect inducing element within said passageway. 8. A jet nozzle for use in a micronizing jet mill comprising: a nozzle body having a first open end carrying interior threads and a second open end having a slot-like opening, said first and second ends being joined by a passageway passing through said nozzle; a coanda effect inducing element positioned within said passageway and extending outward from said nozzle through said second end, wherein said coanda effect inducing element has an external geometric configuration substantially conforming to the internal configuration of said slot-like opening of said second end of said nozzle and wherein the exterior surface of said coanda effect inducing element and the interior surface of said slot-like opening define a gap; and, a coanda effect inducing element retainer positioned within the first end of said nozzle, wherein said retainer has a passageway passing therethrough, thereby securing said coanda effect inducing element within said passageway. 9. A jet nozzle for use in a micronizing jet mill comprising: a nozzle body having a first open end and a second open end, said first and second ends being joined by a passageway passing through said nozzle, wherein said second open end has a slot-like configuration; a coanda effect inducing element adjustably positioned within said passageway, said coanda effect inducing element extending outward from said nozzle through said second end, wherein said coanda effect inducing element has a configuration substantially similar to the slot-like configuration of said second open end. 10. A jet nozzle for use in a micronizing jet mill comprising: a nozzle body having a first open end and a second open end, said first and second ends being joined by a passageway passing through said nozzle, wherein said second open end has a slot-like configuration; a coanda effect inducing element positioned within said passageway, wherein the exterior surface of said coanda effect inducing element and the interior surface of said slot-like opening define a gap; said coanda effect inducing element extending outward from said nozzle through said second open end about 2.5 mm to about 38.1 mm, wherein said coanda effect inducing element has a configuration substantially similar to the slot-like configuration of said second open end and wherein the portion of said coanda effect inducing element which conforms to the configuration of said second open end extends into said passageway a distance ranging from about ten times said gap to about 20 times said gap. 11. A jet nozzle for use in a micronizing jet mill comprising: a nozzle body having a first open end and a second open end, said first and second ends being joined by a passageway passing through said nozzle, wherein said second open end has a slot-like configuration defined by two longer, essentially inwardly hyperbolic sides and opposing generally rounded ends; a coanda effect inducing element positioned within said passageway, wherein the exterior surface of said coanda effect inducing element and the interior surface of said slot-like opening define a gap; said coanda effect inducing element extending outward from said nozzle through said second open end about 2.5 mm to about 38.1 mm, wherein said coanda effect inducing element has a configuration substantially similar to the slot-like configuration of said second open end and wherein the portion of said coanda effect inducing element which conforms to the configuration of said second open end extends into said passageway a distance ranging from about ten times said gap to about 20 times said gap.
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