Patent ID: 8361315

Claim:
A filtration and air supply device( 3 ) used in an aquatic equipment( 2 ); said filtration and air supply device( 3 ) comprises filtration system with air supply, including filtration box( 31 ), water pump( 33 ), filter cartridge( 32 ), air pump( 7 ), air inlet tube( 8 ), air duct( 36 ); the characteristics of this filtration and air supply device( 3 ) are: said filtration and air supply device( 3 ) locates inside the aquatic equipment( 2 ); box wall( 310 ) is with grids( 312 ); water pump( 33 ) locates in one side of the filtration box( 31 ), and filter cartridge( 32 ) locates in the other side of the filtration box( 31 ); bottom slab( 9 ) is equipped with air inlet hole( 38 ) and water pump power cord inlet hole( 40 ); the bottom of air inlet hole( 38 ) connects the air pump( 7 ) through air inlet tube( 8 ); the upper part of air inlet hole( 38 ) connects air outlet hole ( 318 ) through air duct( 36 )no-return valve( 37 ) locates between air duct( 36 ) and air outlet hole( 318 ); outside of the air outlet hole( 318 ) is equipped with air filter hood( 315 ).