Abstract: A rotary joint having a rotating part provided with a rotating channel in an axial direction, attached to a shaft, and advancing and retracting in the axial direction and, arranged coaxially, a stationary part provided with a stationary channel in the axial direction, wherein an engagement part which allows relative rotation of a rotating seal part provided at the rotating part and a stationary seal part provided at the stationary part while stopping movement in the axial direction and holds a state in which the two sealing surfaces of said rotating seal part and stationary seal part are made to abut facing each other and wherein a rotation stopping mechanism restricting relative rotation of the stationary shaft part with respect to the fitting hole about the axis are provided.

Abstract: A rotary joint having a rotating part provided with a rotating channel in an axial direction, attached to a shaft, and advancing and retracting in the axial direction and, arranged coaxially, a stationary part provided with a stationary channel in the axial direction, wherein an engagement part which allows relative rotation of a rotating seal part provided at the rotating part and a stationary seal part provided at the stationary part while stopping movement in the axial direction and holds a state in which the two sealing surfaces of said rotating seal part and stationary seal part are made to abut facing each other and wherein a rotation stopping mechanism restricting relative rotation of the stationary shaft part with respect to the fitting hole about the axis are provided.

Abstract: This mixed liquid separation apparatus separates and extracts an oil and fat component, which has a lower specific gravity and higher viscosity than a coolant, from a mixed liquid in which the oil and fat component forms a surface layer as a result of floating to the surface of the coolant. The mixed liquid separation apparatus has a liquid separation and transfer part that is composed of a helical body, a shaft and rotary drive part. The liquid separation and transfer part is disposed in a vertical orientation such that the bottom of liquid separation and transfer part is inserted in a storage tank, which stores the mixed liquid, and separates the oil and fat component from the coolant and transfers said oil and fat component upward.

Abstract: This mixed liquid separation apparatus separates and extracts an oil and fat component, which has a lower specific gravity and higher viscosity than a coolant, from a mixed liquid in which the oil and fat component forms a surface layer as a result of floating to the surface of the coolant. The mixed liquid separation apparatus has a liquid separation and transfer part that is composed of a helical body, a shaft and rotary drive part. The liquid separation and transfer part is disposed in a vertical orientation such that the bottom of liquid separation and transfer part is inserted in a storage tank, which stores the mixed liquid, and separates the oil and fat component from the coolant and transfers said oil and fat component upward.