| 摘要 |
An apparatus for forming fresh ice particles (100) of a desired sizing and at a desired mass flow rate suitable for use in ice blasting equipment (10) is provided. The apparatus comprises: i) counter-rotating first and second rollers (146, 148) for fracturing ice (136) and having a nip (150) to receive and direct ice flakes or sheets (136) between said rollers (146, 148) at said desired mass flow rate, ii) each of said counter-rotating ice fracturing cylindrical rollers (146, 148) having a uniform array of parallel rows of a plurality of spikes (220) extending parallel to a longitudinal axis for each roller (146, 148) said plurality of spikes (220) in each row being uniformly and equally spaced apart, circumferentially of each of said cylindrical rollers (146, 148), iii) said rollers (146, 148) in counter-rotating position having their respective longitudinal axis spaced apart a distance to mesh opposing spikes (220) on said rollers, iv) means (54) for counter-rotating said meshed rollers at a circumferential velocity which fractures ice flakes or sheets (136) introduced to said nip (150) at said desired mass flow rate, v) means (164, 166) for fixing relative meshed synchronized rotational position of said rollers (146, 148) to locate a row of said rows of spikes of said first roller between an adjacent two rows of said rows of spikes of said second roller, vi) said spikes of said row of said first roller being offset laterally in said longitudinal axis direction relative to said spikes of said row of said second roller to position and project a spike (228) of said first roller spatially between four opposing adjacent spikes (220) of two adjacent rows of spikes of said second roller, vii) means (234) for locating and fixing depth of spike projection (224) of said spikes of said first roller (146) into a recess (236) between spikes of said second roller (148), said desired sizing of fresh ice particles (100) being determined by distance between spike projection and recess where particle size is proportional to the depth distance. |
