JPH0123610B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a drain trap that is attached to a drain outlet of a sink, bathroom floor, bathtub, etc.

FIG. 1 is a partially vertical front view of a conventionally known drainage trap. In the figure, 1 is the drainage trap body, 1'
2 is a hooking protrusion, 2 is a water overflow tube, and 3 is an odor-proof lid that covers the overflow tube and the odor-proof lid that holds the water seal at the bottom of the main body. 3' is a hanging piece, 6 is a cup strainer having a large number of water passage holes for preventing kitchen waste from flowing out, and 8 is a lid body.

In conventional drainage traps with such a configuration, when water is drained, the inside of the trap and appliance drain pipe is nearly full of water, and if the trap self-siphons, the suction force of the drainage water will cause the trap to siphon.
Just before the end of drainage, the water seal leaks out, or the amount decreases enough to break the water seal. Or, as mentioned above, the predetermined water seal at the bottom of the main unit may be broken due to an induced siphon in the drainage system, which is a phenomenon that frequently occurs in high-rise buildings where joint drainage is performed or in dual-tank sinks. The drawback was that it could not completely prevent odor.

The drainage trap of the present invention eliminates the drawbacks of the above-mentioned known drainage traps and provides reliable water sealing that is currently required.

That is, in the trap body, the water seal in the water seal chamber formed at the bottom of the trap body by the overflow tube of the trap body and the odor-proof lid covering the overflow tube prevents the siphon phenomenon that occurs when draining is completed. Therefore, in order to prevent water from flowing into the drain pipe and being reduced or lost, a portion of the water for sealing water replenishment is replenished from a replenishment water reservoir located at a higher position than the top of the overflow pipe. It is something to do.

Hereinafter, the drainage trap of the present invention will be explained in detail with reference to FIGS. 2 and 3. Reference numeral 1 denotes a drainage trap main body, and an overflow tube 2 is provided upright in the center of the bottom surface thereof, communicating with a drainage port 1'.

3 is an odor-proof lid 3 that covers the overflow tube 2;
A water-tight chamber A is formed at the bottom of the trap by the odor-proof lid 3 and the odor-proof lid 3.

Reference numeral 4 shown in FIG. 2 is an annular inner wall bent to have an L-shaped cross section, and forms a make-up water storage portion C, which is an annular groove, between it and the main body wall.

The make-up water storage section C has its bottom located above the full-water level of the water-sealing chamber A, that is, the upper edge of the overflow tube 2 and the same height line B, and temporarily stores a predetermined amount of drainage into the make-up water storage section C. A water passage hole 5 to the water sealing chamber A is provided at the bottom of the partition wall 4. The water hole 5
has a small diameter so that the make-up water in the make-up water storage section C gradually flows out into the sealing chamber A after the completion of draining, and the outflow causes a time difference from the time when the drain is finished. Further, since the water passage hole 5 is provided at the bottom of the partition wall 4, all the drainage water in the make-up water storage part flows down without remaining.

In the figure, reference numeral 3' denotes a hooking piece protruding from the outer periphery of the lower end of the deodorizing lid 3, which is engaged with a hooking protrusion 4' protruding from the lower part of the partition wall 4 to prevent water from draining or backflowing from the sewer pipe. This prevents the odor-proof lid 3 from floating and swinging, thereby preventing noise from being generated.

A cup strainer 6 having a large number of water passage holes 6' is fitted into the opening of the drain trap 1 and suspended above the deodorizing lid.

A valve body 7 that tightly fits into the trap opening is fitted above the opening of the cup strainer 6, and the valve body 7 includes a frame body that comes into elastic contact with the trap inner surface, and a plurality of tongue pieces 7' having radial notches. It consists of an opening and closing part that consists of a

Furthermore, a lid body 8 is attached to the opening of the cup strainer 6.
The cup strainer 6, which is removably fitted with the cup strainer 6 and which stores kitchen waste, is configured to be easily taken out by a handle 9.

In the embodiment shown in FIG.
A partition wall 4 is integrally extended and protruded from the outer periphery of the top plate of the partition wall 4, and a water passage hole 5 is formed near the bottom of the side surface of the partition wall 4.

The present invention is not limited to the above configuration, but the inner and outer peripheries of the strainer or the peripheral wall of the trap body are double walls, and the make-up water storage portion C is provided in the space etc. above the upper edge of the overflow tube. It is possible to achieve the same effect even if

The function of the drainage trap of the present invention having the above structure is as follows.

The drainage trap of the present invention is attached to a sink, floor, etc., and when draining water, kitchen waste, etc. usually collects in the cup strainer, and the drainage immediately flows down from the multiple water passage holes 6', and the odor-proof lid at the bottom of the trap body. The waste water passes through the drainage channel formed by the overflow cylinder and is discharged from the overflow cylinder 2, and finally remains in the water seal chamber A to form a water seal.

This water seal prevents odors from escaping from the sewer, etc., and serves to cut off odors.

When a place, such as a sink, is used to temporarily store water, when a large amount of water is drained, with conventional traps, the inside of the trap and appliance drain pipe becomes full of water, causing the trap to self-siphon.
Alternatively, when an induced siphon occurs, the downstream wastewater that should form a water seal is also sucked in and flows out, making it impossible to form a water seal.

In the drainage trap of the present invention, when the siphon action occurs, even if the lower seal water is sucked and drained,
Since the make-up water storage section C is located at a high level and is separated from the lower water seal by the annular wall or bent inner wall 4 and is not in communication with it, a portion of the wastewater is not immediately sucked into the make-up water storage section C. linger.

The effect of the drainage trap of the present invention is that when the above-mentioned siphon effect occurs, by providing the make-up water storage part C at a higher level than the upper end of the overflow pipe, one of the drainage traps is
The remaining water temporarily remains and gradually flows down from the water passage hole 5', restoring the reduced water sealing depth. It is a simple structure that only requires a short annular wall or a bent inner wall.

If the cup strainer 6 is removed, the make-up water storage section C can be cleaned immediately.

[Brief explanation of drawings]

FIG. 1 is a partially vertical front view of a conventional drainage trap, FIG. 2 is a partially vertical front view of a main part of the drainage trap of the present invention, and FIG. 3 is a partially vertical front view of another embodiment of the same. . 1... Drainage trap main body, 2... Water overflow cylinder, 3... Odor-proof lid, 4... Partition wall, A... Water sealing chamber, C... Replenishment water storage section.

Claims (1)

[Scope of Claims] 1. In a drain trap having a water sealing chamber formed at the bottom of the drain trap main body by an overflow tube protruding into the drain trap body and an odor-proof lid covering the overflow tube, an area higher than the upper edge of the overflow tube A make-up water storage part is provided in the main body of the drainage trap, and a water passage hole is provided at the bottom of the make-up water storage part, so that a portion of the wastewater temporarily stored in the make-up water storage part is transferred from the water passage hole to the water sealing chamber. A drainage trap characterized by dripping water to re-form the water seal. 2. Claim 1, characterized in that the make-up water storage section is provided in an annular shape on the trap main body peripheral wall.
Drainage trap as described in section. 3. The drainage trap according to claim 1, wherein the make-up water storage portion is provided protrudingly from the upper surface of the odor-proof lid.