Sheet structure of the metal sheet butterfly valve

摘要

(57) Abstract Objective External size of diameter direction is constrained uniformlyBecause, the deflecting tonnage of the metal sheet being able to come off largely, full closing rankImprovement of the adhesion for the sheet surface of the needle of the position can be assured,The sea urchin it does. Constitution The annular hollow which was formed to the inner skin of cylindrical shape valve box 1Inside 6, metarushi which installs metal sheet 7 as the seatIn the tobatahurai valve, it paralleled to the shaft center of the above-mentioned valve box 1Cross section sheet piece 8 of abbreviation U shape of character (18) and 9 (19)As with diameter direction of the above-mentioned valve box distribution facilities it does in the multiple steps, each otherIt loops and concatenates to condition and forms the above-mentioned metal sheet 7,Basic destal 8of a sheet piece 8 of the first level (18) (18a) onAlthough it makes description valve box support 1 sheet piece 9 of the tail end (19)Tip 9b (19b) on the above-mentioned needle side sheet surface 5 bulletIt constitutes in the contact section which contacts sexually.