US 12,214,482 B2
Dry filtration system
James P. Crocker, Stuart, FL (US); and Stephen Carroll, Stuart, FL (US)
Assigned to Waterblasting, LLC, Stuart, FL (US)
Filed by WATERBLASTING, LLC, Stuart, FL (US)
Filed on Feb. 25, 2022, as Appl. No. 17/652,511.
Claims priority of provisional application 63/154,079, filed on Feb. 26, 2021.
Prior Publication US 2022/0220682 A1, Jul. 14, 2022
Int. Cl. B25H 3/02 (2006.01); A47L 9/16 (2006.01); A47L 9/20 (2006.01); B01D 46/00 (2022.01); B01D 46/58 (2022.01); B01D 46/76 (2022.01); B01D 46/762 (2022.01); B01D 50/00 (2022.01); B01D 50/20 (2022.01); B65D 88/10 (2006.01); B65D 90/14 (2006.01); E01H 1/08 (2006.01); E01H 1/10 (2006.01)
CPC B25H 3/02 (2013.01) [A47L 9/1683 (2013.01); A47L 9/20 (2013.01); B01D 46/58 (2022.01); B01D 46/76 (2022.01); B01D 46/762 (2022.01); B01D 50/00 (2013.01); B01D 50/20 (2022.01); B65D 88/10 (2013.01); B65D 90/14 (2013.01); E01H 1/0827 (2013.01); E01H 1/103 (2013.01); B01D 2279/55 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A filtrations system for a mobile vehicle operating a grinder used for removal of markings or creating rumble strips, said filtration system comprising:
a debris bin secured to said mobile vehicle;
a rotary lobe vacuum blower fluidly coupled to said debris bin, said vacuum blower having a suction juxtapositioned to the grinder for drawing debris into said debris bin;
a filter cyclone fluidly coupled to said debris bin, said filter cyclone formed from a cylindrical tank having a plurality of spaced apart filter bags constructed and arranged to allow a cyclonic flow of air therebetween before passing through said filter bags for separating particles from the debris, said cylindrical tank having a collection box positioned beneath said filter bags;
a vibrator positioned along an outlet of said spaced apart filter bags, said vibrator displacing a diaphragm wherein said diaphragm provides alternating positive pressure and negative pressures within said filter bags for dislodging particles adhering to said filter bags;
a polishing tank partially filled with water coupled to an exhaust of said filter cyclone, said polishing tank constructed and arranged to direct the exhaust of the filter cyclone through the water for removal of airborne particles and to provide sound suppression and a slide valve for reversing a high volume of cleaned air through said filter bags, said slide valve is a 3-way 2-position slide valve controlled by a PLC providing a forward air flow direction wherein a first aperture is fluidly coupled to a vacuum side of said blower, a second aperture is fluidly coupled to a compressed air side of said blower wherein air is being vacuumed from said filter cyclone and directed to said polishing filter; wherein a reverse air flow position positions a vacuum of said cyclone filter moved to a clean compressed air side of said blower allowing a high volume of compressed air to flow back to said cyclone filter, the aperture coupled to the compressed side of said blower is directed to atmosphere which discontinues air flow to said polishing chamber.