Experiment Research on the NarrowSeam Type Injector of the Aerator　(NSIA)

NSIA can solve the problems i．e． in the cold region the aerators are inefficient,need much money input and are difficult to be extended． The operating principle and structure parameters of NSIA were discussed.NSIA can be installed in JQB or Y series electresubmersible pump for use of aeration and irrigation and drainage. The NSIA possesses of simple structure,low cost and notable economic results.