Powder dispersion system
View Patent ↗A powder dispersion method and apparatus comprising an air eductor and a powder dispensing syringe inserted into a suction connection of the air eductor.
1. A powder dispersion method comprising the steps of
providing an air eductor;
inserting a powder dispensing syringe into a suction connection of the air eductor;
supplying powder to the syringe; and
ejecting powder from the syringe by movement of a piston of the syringe toward a tip of the syringe into the suction connection of the air eductor.
2. The method of claim 1 wherein the supplying step comprises using a linear pump to supply powder to the syringe.
3. The method of claim 2 wherein the linear pump is a syringe pump.
4. The method of claim 1 additionally comprising the step of driving air past a discharge connection of the air eductor.
5. The method of claim 4 wherein the driving step comprises employing a housing with an inlet for ambient air and an outlet for a mixture of powder and air driven by a fan to the ambient environment.
6. The method of claim 4 wherein the method disperses powders comprising particles of from approximately 1 to 10 microns at a rate of at least approximately 170 mg/minute.
7. The method of claim 1 wherein the syringe has had its front end machined off.
8. The method of claim 1 additionally comprising employing an air eductor holder comprising a top and a bottom, wherein the top comprises a single channel and the bottom comprises a matching channel and a connecting downward-extending channel.