Urinal drain trap

Abstract

Provided is a urinal drain trap which is capable of preventing diffusion of odor for a long period of time. The urinal drain trap (10) is equipped with a lid (11) having an inlet (11A); a body (12) having an outlet (12C); and a tubular partition wall (13). The interior of the body (12) is divided into a first region (31) and a second region (32). The first region (31) and the second region (32) are linked with each other by a third region (33). Sealing liquid is injected into the first region (31), this sealing liquid being non-water-soluble, having a lower specific gravity than urine, and forming a sealing layer (S) at an elevation above retained urine. In a peripheral area of the lower end of the partition wall (13), there is formed a connecting portion (14) which extends laterally. In a peripheral area of the tip of the connecting portion (14), there is formed a folded portion (15) which extends upward. Between the partition wall (13) and the folded portion (15), the inlet (11A) is provided, in such a way as to form a through opening, at a location where urine flows in from above. The outlet (12C) is located in the second region (32) and is open at an elevation above the upper end of the folded portion (15).

Description

TECHNICAL FIELD[0001]The present invention relates to a urinal drain trap.BACKGROUND ART[0002]FIG. 12 of Patent Document 1 discloses a conventional urinal drain trap. The urinal drain trap is formed into a cartridge type and includes a lid, a body and a partition wall. The urinal drain trap is fitted into a circular opening defined in a lower end of a bowl surface of the urinal thereby to be mounted to the urinal. The lid has a circular shape as viewed in a planar view. The lid has a central part formed with an inlet through which urine flowing downwards along the bowl surface further flows into the trap. The body includes a cylindrical sidewall extending downward from an outer peripheral edge of the lid, a bottom continuous from a lower end of the sidewall, and an outlet over which collected urine flows. The partition wall extends downward from a part of the underside located on the inward side relative to the outer peripheral edge of the lid and is formed so as to define a space t...

AI Technical Summary

Benefits of technology

[0009]However, urine swiftly flows from the first region into the third region in the case of the urinal drain trap disclosed in FIG. 12 of Patent Document 1 since the first region has a short flow path. Consequently, the sealing liquid tends to be conveyed into the third region with the urine flowing into the third region. Furthermore, since the folded portion is the inclined surface gently descending toward a downstream side in the third region, the flow path has less vertical changes such that the sealing liquid conveyed into the third region tends to be conveyed further into the downstream second region, tapping into the flow of urine. The sealing liquid conveyed into the second region has a smaller specific gravity than urine, the buoyancy causes the sealing liquid to ascend in the second region. Thus, the sealing liquid conveyed into the second region cannot be returned into the first region, thereby flowing outward through the outlet. Consequently, long-term use of the urinal drain trap results in gradual flow of the sealing liquid out of the outlet, reducing an amount of the sealing liquid and thinning the sealing layer. When the sealing layer is thinned, there is a possibility that foul odors of collected urine may be produced out of the inlet.

Problems solved by technology

Consequently, long-term use of the urinal drain trap results in gradual flow of the sealing liquid out of the outlet, reducing an amount of the sealing liquid and thinning the sealing layer.

When the sealing layer is thinned, there is a possibility that foul odors of collected urine may be produced out of the inlet.

When the space between the outer surface of the outlet conduit and the inner surface of the partition wall is narrow, the gel urinary calculi adherent to the outer surface of the outlet conduit and the inner surface of the partition wall accumulate, there is a possibility that the ascending flow path may early be clogged.

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