Pipe-sleeve type roller slag-cooling machine

The utility model relates to a grommet-thimble and rolling cooling slag machine which is applied in hot slag-out of a circulating fluidized boiler, a refuse incinerator, a fluidized-bed boiler and a thrown coal boiler, which adopts that an inner sleeve is sleeved in a middle sleeve and the middle sleeve is sleeved in an outer sleeve, wherein the outer sleeve, the middle sleeve and the inner sleeve are separately supported by support pipes. Two communicating pipes are separately arranged the upper of between the outer sleeve and the middle sleeve, and between the middle sleeve and the inner sleeve. The support pipes and the communicating pipes are formed into an interlayer which is communicated with each other and porous. The structure arrangement of the utility model is flexible, compact and reasonable. The effect of cooling is good, slag-proof and water-proof and the temperature of the slag can get cool without long-distance. The utility model has the advantages of convenient installment, adjustment, check and increasing of service life.