Agitator and drive apparatus and method

摘要

An agitator drive apparatus for agitating and injecting gas into a liquid in a mixing vessel. The apparatus includes a first and second housing coupled to one another along with a shaft having a first and second end that is rotatably coupled to the first housing and extends from the first housing into the second housing. The shaft includes an inner bore that extend from the second end at least partially to the first end. The shaft also includes a plurality of air ports in communication with the inner bore.