CHILL MOLD FOR CASTING STRAIGHT-FLOW VALVE Russian patent published in 1996 - IPC

FIELD: compressor building, namely self-acting straight-flow valves for controlling suction and pumping. SUBSTANCE: chill mold for casting a valve includes movable 1 and stationary 2 half-molds and mutually opposite inserts 3,4, some inserts are provided by teeth 5 with curvilinear surfaces and other inserts are provided by trapezoidal teeth 6, joining along their flat surfaces. Tooth 6 has on its trapezoidal surface grooves 7, passing along a length of plate 9. A height of the groove is less than a height of the plate 9 by 2-3 mm. The inserts 4 have through groove 8 near a root of tooth 5 at a side of the curvilinear surface. The plate 9 is arranged between teeth 5,6 in grooves 7. A protrusion of the plate 9 is placed in the through groove 8. EFFECT: enhanced strength and size accuracy of the wholly cast valve. 1 cl, 4 dwg