(57) An abrasive wheel assembly comprising a rotor (12), a runnerhead (13) concentrically
mounted on the said rotor for rotation at a predetermined operating RPM, a plurality
of spaced radially arranged abrasive particle throwing vanes (14), means detachably
securing the said vanes to the face of the said runnerhead, impeller means (18) carried
by the said rotor for feeding particulate abrasive material to the said vanes, characterised
in that said vanes are provided with an abrasive throwing face (15) having space side
portions (29, 30) flared away from the abrasive receiving heel end portion (16) of
the said vane to the discharge end thereof (17) at a flare angle in the range of from
2° to 7° is disclosed.
An abrasive particle throwing vane for use in a rotatable blasting wheel assembly,
the said vane comprising a heel end portion spaced from a discharge end portion, a
particle throwing face surface intermediate the said end portions, characterised in
that the spaced sides of the said face flare away from the said heel end portion to
the said discharge end of the said throwing face at a flare angle in the range of
from 2° to 7° is also disclosed.
By virtue of the present invention, inter alia, it is now possible to effect even
distribution of abrasive transverse of the vane face at a varying operating rate.
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