Odorless drain assembly

Abstract

An “odorless drain assembly” comprises an outer cylinder ( 23 ) with an open top wall, and an inner cylinder ( 21 ); said outer cylinder ( 23 ) is connected with the inner cylinder ( 21 ) by a common base ( 22 ); and a gap (D) is formed in between; said outer cylinder ( 23 ) is extended with an outer edge curled down and around as a lip portion ( 24 ); and a perforated sleeve ( 30 ) covers up said inner cylinder ( 21 ) with an open bottom wall extended with an outer edge curled up (U-shape) and around as a stopper ring ( 31 ). The diameter of said perforated sleeve ( 30 ) is larger than the inner cylinder ( 21 ) but smaller than the outer cylinder ( 23 ); thereby separate inner gap (D 1 ) and outer gap (D 2 ) are divided from the gap (D); further a plurality of pores ( 32 ) formed at the lower half portion of a side wall of the perforated sleeve ( 30 ).

1 . An odorless drain assembly comprises: a cylinder assembly ( 20 ) consists of an outer cylinder ( 23 ) with an open top wall, and an inner cylinder ( 21 ) with an open slanted wall at an angle e disposed inside the outer cylinder ( 23 ); said outer cylinder ( 23 ) is integrally connected with the inner cylinder ( 21 ) by a common base ( 22 ); a gap (D) is formed among the outer cylinder ( 23 ) and the inner cylinder ( 21 ) and said common base ( 22 ); said outer cylinder ( 23 ) is extended with an outer edge curled down and around to form a lip portion ( 24 ); and a perforated sleeve ( 30 ) disposed inside the outer cylinder ( 23 ) with a open bottom wall, said perforated sleeve ( 30 ) covered up said inner cylinder ( 21 ); said open bottom wall of said perforated sleeve ( 30 ) is extended with an outer edge curled up (U-shape) and around to form a stopper ring ( 3   1 ); a diameter of said perforated sleeve ( 3 . 0 ) is larger than the inner cylinder ( 21 ) but smaller than the outer cylinder ( 23 ); thereby separate inner gap (D 1 ) and outer gap (D 2 ) are divided from the gap (D); further a plurality of pores ( 32 ) formed at a lower half portion of a side wall of the perforated sleeve ( 30 ), where water may flow from the outer cylinder ( 23 ) into the inner cylinder ( 21 ) along protracted zigzag paths provided by the pores, and filter debris at the same time. 
     
     
         2 . The odorless drain assembly of  claim 1  wherein a tapered tap ( 10 ) is mounted on said open top wall of the cylinder assembly ( 20 ); a bottom perimeter of said tap ( 10 ) is extended with an inner edge zigzag bent and around to form a round hoop portion ( 11   a ) interlocked with the lip portion ( 24 ); a top perimeter of said tap ( 10 ) is extended with an outer edge curled down and around to form a clasp portion ( 11   b ). 
     
     
         3 . The odorless drain assembly of  claim 2  wherein an annular groove ( 24   a ) formed in a concaved portion of the lip portion ( 24 ) is adapted to led in the round hoop portion ( 11   a ); the round hoop portion ( 11   a ) is bifurcated with a bifurcated tongs portion ( 11   c ) to resist against the cylinder assembly ( 20 ) in position. 
     
     
         4 . The odorless drain assembly of  claim 2  wherein said tapered tap ( 10 ) received with a filtration cover ( 40 ) with side arches ( 41 ). 
     
     
         5 . The odorless drain assembly of  claim 2  wherein said tapered tap ( 10 ) received with a pull plug. 
     
     
         6 . The odorless drain assembly of  claim 1  wherein an inner wall of said perforated sleeve ( 30 ) is protruded inward with platelets ( 34 ); each of the platelets ( 34 ) is protruded inward from a rim of each pore ( 32 ) as four-pronged display hook elastically against the inner cylinder ( 21 ) by a planar surface. 
     
     
         7 . The odorless drain assembly of  claim 1  wherein an open top wall of said perforated sleeve ( 30 ) is extended with an outer edge curled down and around to form a clasp portion ( 33 ). 
     
     
         8 . The odorless drain assembly of  claim 1  wherein inner threads ( 27 ) formed on said inner surface of said open top wall of said outer cylinder ( 23 ) screwed to an upper-adapter ( 80   a ); said base ( 22 ) of said cylinder assembly ( 20 ) is extended downward with said drain tube ( 26 ) connected to a lower adapter ( 80   b ) in connection with said drainage pipe ( 60 ) for draining out water; inner and outer surfaces of said upper and lower adapters ( 80   a,    80   b ) are provided and formed with different numbers of threads ( 81   a,    81   b ). 
     
     
         9 . The odorless drain assembly of  claim 8  wherein said upper and lower adapters ( 80   a,    80   b ) are extended horizontally with a rigid outer edge shaped in hexagonal shape and circular shape respectively to form clasp portions ( 82 ) to facilitate rotations of said upper and lower adapters ( 80   a,    80   b ) manually. 
     
     
         10 . The odorless drain assembly of  claim 8  wherein said lower adapter ( 80   b ) consists of an outer cylinder ( 83 ) with an open bottom wall, and an inner cylinder ( 84 ); said inner cylinder ( 84 ) is connected with said outer cylinder ( 83 ) integrally by a common top ( 85 ); inner and outer surfaces of said inner and outer cylinders ( 83 ,  84 ) are provided and formed with different numbers of threads ( 81   a,    81   b ). 
     
     
         11 . The odorless drain assembly of  claim 8  wherein a bottom end of the inner threads ( 27 ) is formed with an annular groove ( 28 ), a sealing ring ( 90 ) is * led into the annular groove ( 28 ) to prevent flowing water from leaking out.