Air pump with noise silence arrangement

An air pump for a fish-tank comprising:

• a pair of base plates;
• a body comprising a frame, an inlet air chamber, an outlet air chamber divided by said frame, a first and a second inlets at said inlet air chamber, a first and a second outlets at said outlet air chamber;
• a slot on each of said first inlet and said first outlet, a discharge pipe, and a bottom casing comprising an air charge opening on an upper portion thereof in communication with outside, a pair of compartmental air chamber assemblies, an air charge tube extended down from said air charge opening to one of said compartmental air chamber assemblies, a bottom end of said air charge tube urged against an inner wall of one of said base plates, and one or more third outlets around a periphery of said bottom end of said air charge tube;
• a pair of caps each clung onto said frame;
• a pair of vibration mechanisms each secured to an outer surface of each cap, each vibration mechanism comprising a magnet at one side;
• a pair of check mechanisms with said body sandwiched therebetween, each of said check mechanisms clung to said corresponding slot and comprising a block member and a diaphragm for regulating air passing through said first inlet and said first outlet;
• a pad clung to a rear side of said body;
• and
• a rear plate clung to a rear side of said pad;
• wherein air is guided into said air chamber assemblies prior to leaving said discharge pipe.