Abstract: A method for producing nodular cast iron by using a nodulizer and a spheroidizing device, the method including spheroidizing, the spheroidizing including the following steps: a) placing an integrated rare earth magnesium ferrosilicon nodulizer coated with a rectangular steel tube at a preset position inside a spheroidizing ladle, disposing a strut head on the spheroidizing ladle, and fixing the strut head; b) inputting a ferrosilicon inoculant into the spheroidizing ladle; c) inputting melted iron into the spheroidizing ladle for spheroidizing; and d) removing the strut head from the spheroidizing ladle after spheroidizing.

Abstract: A low-water-flow toilet having a toilet body, a funnel, a floating ball with a pull wire, water sealing structures, a toilet seat with a rotating shaft, an upper cover, and a plastic fender cover. The water sealing structures include an inner water sealing trap (11) of the toilet body, an outer water sealing trap (12) of the toilet body, a rotating groove arranged on the inner side of the inner water sealing trap (11), and a rotating groove arranged on an outer side of the outer water sealing trap (11). A low-water-flow urinal, having a urine storage bottle (18), a funnel having a water sealing trap (20), a floating ball with a pull wire and a pull ring (21), and an upper cover (23) of the urine storage bottle.

Abstract: A low-water-flow toilet having a toilet body, a funnel, a floating ball with a pull wire, water sealing structures, a toilet seat with a rotating shaft, an upper cover, and a plastic fender cover. The water sealing structures include an inner water sealing trap (11) of the toilet body, an outer water sealing trap (12) of the toilet body, a rotating groove arranged on the inner side of the inner water sealing trap (11), and a rotating groove arranged on an outer side of the outer water sealing trap (11). A low-water-flow urinal, having a urine storage bottle (18), a funnel having a water sealing trap (20), a floating ball with a pull wire and a pull ring (21), and an upper cover (23) of the urine storage bottle.