Abstract: A sealing ring structure of a sinkhole, which is inlaid in the sinkhole to achieve bugproof and odorproof effects. The sealing ring structure includes a base seat, a diaphragm and a gum ring. The base is a ring body having a screen section formed with multiple perforations. The center and other portions of the screen section are respectively formed with holders. An upper end and a lower end of the base seat are respectively formed with a flange and a stepped skirt. The diaphragm is a gum-made thin disc having chucking bosses inserted in the holders to connect the diaphragm under the base seat with outer circumference of the diaphragm tightly attaching to the stepped skirt of the base seat. The gum ring is fitted around the base seat under the flange thereof. A middle portion of the gum ring is formed with a bight section. When the base seat is placed in the sinkhole, the gum ring is snugly watertight fitted in the sinkhole.

Abstract: A connecting structure of water transfer pipeline, including a connecting member having a central flow way, a ball section at one end and an insertion end at the other end. An outer collar is fitted around the insertion end. An inner circumference of the outer collar is formed with an annular groove in which a C-shaped retainer ring is inlaid. The retainer ring abuts against an annular rib of the connecting member. A water pipe is fitted around the insertion end of the connecting member to clamp the C-shaped retainer ring, whereby the connecting member, the outer collar and the water pipe are connected with each other. A ball seat formed with a central passage and having a tapered lower opening is fitted around the ball section of the connecting member. An upper opening of the ball seat is formed with an inner thread. An upper retainer collar is fitted around the other side of the ball section. A water transfer pipe with outer thread is screwed in the inner thread of the ball seat.

Abstract: A bugproof and odorproof sealing ring structure of a sinkhole screen, including a base seat, a diaphragm and a gum ring. The base is a ring body having a screen section formed with multiple perforations and holders. An upper end and a lower end of the base seat are respectively formed with a stepped flange and a stepped skirt. The diaphragm is a gum-made thin disc having chucking bosses inserted in the holders to connect the diaphragm under the base seat with outer circumference of the diaphragm tightly attaching to the stepped skirt of the base seat. The inner circumference of the gum ring is formed with a stepped annular groove adapted to the stepped flange of the base seat, whereby the gum ring can be snugly fitted around the stepped flange of the base seat. The sealing ring can be directly placed on a conventional sinkhole screen to achieve a bugproof and odorproof effect.

Abstract: A floor drain with membrane strainer includes a main body having a pit, a top flat grate, and a strainer assembly mounted in the main body below the flat grate. The strainer assembly includes a disc-shaped base that has an annular plate portion with a downward inner flange, and a U-sectioned cup portion having a bottom central hole and being supported in the annular plate portion by ribs with an open area left between them; a membrane strainer made of an elastic and flexible material and having a thin annular portion, on which locating rods are provided for engaging with locating holes on the base to thereby fix the membrane strainer below the flange to normally seal the open area; and a gasket ring fitted around the base for the whole strainer assembly to stably seat in the pit of the main body.