F - Mech Eng,Light,Heat,Weapons – 27 – B
Patent
F - Mech Eng,Light,Heat,Weapons
27
B
25/89
F27B 9/16 (2006.01) F26B 11/00 (2006.01)
Patent
CA 1048751
CONTINUOUS TUNNEL KILN FOR CURING MOLDED CONCRETE PRODUCTS ABSTRACT OF THE DISCLOSURE A system for curing molded concrete products, such as green concrete blocks supported on pallets, wherein a carousel chassis mounting circumferentially spaced carriers, with generally radially extending, vertically spaced shelf members for supporting the products, is disposed for indexing rotary travel in a circular kiln tunnel, the carousel carriers comprising racks with substantially imperforate inner and outer end walls, a substantially imperforate bottom wall, a substan- tially imperforate radial wall, and a substantially imperforate top wall, but being sidewisely open at at least one side. Cir- cumferentially spaced groups of rack surrounding seals compris- ing circumferentially spaced resilient wiper blades are mounted to form sealed compartments between the groups as a result of carriers being stopped in indexed position at a series of cir- cumferentially spaced locations in the tunnel, and means is provided for introducing heated air with entrained steam into certain compartment, recirculating it, and entraining added steam in the recirculated flow. At least one carriage mounted for reciprocatory movement on the tunnel floor indexes the carousel chassis which is supported on rollers which adjust in posi- tion automatically to accommodate variations in chassis level.
207940
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