Atomizer wheel for the atomization of suspensions of hard-wearing materials

Abstract

An atomizer wheel comprising an annular chamber provided with a number of conical outlet holes lined with bushings extending a distance into the chamber.

I claim: 
     
       1. An atomizer wheel comprising a hub, an outer wall part coaxially disposed about said hub and a bottom part connecting said outer wall part with said hub, said outer wall part, said hub, and said bottom part defining between them an annular chamber, a ring-shaped cover member detachably connected to said outer wall part, said cover member having an inner circumference defining together with said hub an unobstructed space in communication with said annular chamber, said outer wall part being provided with a plurality of regularly shaped holes uniformly distributed around the circumference of the outer wall part, said holes forming the only outlet openings of the wheel, each of said holes being lined with bushing of wear-resistant sintered material, said holes and said bushings being tapered in direction radially outwardly from said chamber, the inner end of each of said bushings projecting into said chamber while their outer ends are substantially flush with the outside of said outer wall part. 
     
     
       2. An atomizer wheel as claimed in claim 1, wherein said bushings have circular cross-sections. 
     
     
       3. An atomizer wheel as claimed in claim 1, wherein said bushings have square shaped cross-sections. 
     
     
       4. An atomizer wheel as claimed in claim 1, wherein a plate of wear-resistant material is embedded in the surface of said bottom part, facing said annular chamber. 
     
     
       5. An atomizer wheel as claimed in claim 1, wherein said bottom part has a sintered wear-resistant surface coating facing said annular chamber. 
     
     
       6. An atomizer wheel as claimed in claim 1, wherein said bottom part has a conical surface sloping outwards from said hub within said annular chamber. 
     
     
       7. An atomizer wheel comprising a hub, an outer wall member coaxially disposed about said hub, a bottom member connecting said outer wall member with said hub, the upper surface of said bottom member being of a wear-resistant material, said outer wall member, said hub, and said bottom member defining between them an annular chamber, a ring-shaped cover member detachably connected to said outer wall member, said cover member having an inner circumference defining, together with said hub, an inlet opening in communication with said annular chamber, said outer wall member being provided with a plurality of uniform outlet openings uniformly distributed about the periphery of the outer wall part and forming the only outlet openings of said wheel, and a bushing of wear-resistant sintered material extending radially through each opening and projecting into said chamber, said holes and said bushings being tapered in a direction radially outward from said chamber. .Iadd. 8. The atomizer wheel of claim 1 in which each of the holes is tapered over its entire length. .Iaddend..Iadd. 9. The atomizer wheel of claim 8 in which the portion of the bushing corresponding to the tapered portion of the hole is correspondingly externally tapered in the outward direction. .Iaddend. .Iadd. 10. The atomizer wheel of claim 1 in which the taper of the bushing extends from the outer end thereof. .Iaddend..Iadd. 11. The atomizer wheel of claim 1 in which the inner end of each bushing projects into the chamber without contact with the inside of the outer wall part of the wheel.