Upward flow commercial concrete pipe joint with fixed lower pipe and rotary upper pipe

The utility model relates to an upward flow commercial concrete pipe joint with a fixed lower pipe and a rotary upper pipe, which consists of a fixed pipe, a packing gland, a bearing seat, a bearing seat oil seal, a bearing, a bearing retainer ring, a rotary pipe, packing, a bearing cover oil seal, a bearing cover and a gasket, an oil seal is placed in an oil seal groove of the bearing seat, and then the outer ring of the bearing is pressed into the bearing seat; the bearing cover is installed on the upper end face of the bearing seat and connected through a bolt, the gasket is arranged between the bearing cover and the upper end face of the bearing seat, and the oil seal is arranged in an oil seal groove of the bearing cover. The fixed pipe is inserted into the rotating pipe and makes contact with a spigot in the upper portion of the rotating pipe; the stuffing box between the rotating pipe and the fixed pipe is filled with stuffing; a packing gland is installed on the lower end face of the bearing seat, and