| 摘要 |
PROBLEM TO BE SOLVED: To provide an agitating blade which improves workability of attachment/detachment work of an agitating shaft and a blade member and prevents corrosion of a coupling part between the agitating shaft and the blade member.SOLUTION: An agitating blade comprises an agitating shaft, a blade member and a seal member made of a resin. The agitating shaft has a main body part of which external surface has been subjected to glass lining processing and a fixing part protruded from a bottom surface of the main body part. The blade member has a boss part, of which top surface facing the bottom surface of the main body part with a gap in a vertical direction has been subjected to glass lining processing, and which is attachable to and detachable from the fixing part. The seal member is disposed between the bottom surface of the main body part and the top surface of the boss part and has corrosion resistance. The fixing part has a male thread formed on an external surface where glass lining processing has not been made. The boss part has a threaded hole which is open from the top surface and downward and in which a female thread is formed in an inner circumferential surface where glass lining processing has not been made. By fastening the male thread to the female thread, the seal member is held between the bottom surface of the main body part and the top surface of the boss part.SELECTED DRAWING: Figure 2 |
