JPH073855A - Trap - Google Patents

Abstract

PURPOSE:To securely disconnect the using spot of water from the drain side regardless of use of water. CONSTITUTION:A trap 1 is constituted in such a way that drain is conducted from a using spot of water and discharged from a drain path at the lower part. And it has a structure that the inlet of drain path protrudes somewhat into the inside of a drain-conduction chamber 10. The inlet is closed by a covering member 20 made of a material having a lighter specific gravity than water and the covering member is floated in the drain-conducting chamber by the drain to open the inlet.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trap, and more particularly to a trap installed in a drain pipe and a floor drain for preventing odors and the like at the drainage destination from flowing back into the living room through the drain pipe.

[0002]

2. Description of the Related Art A siphon-shaped, S-shaped, or ring-shaped trap has been provided in a drain pipe for draining water used in a washroom or the like to sewers, and a part of the drainage is retained as sealing water. By doing so, the gas flow communication between the washroom and the sewer is cut off, and odors and toxic gases from the sewer are prevented from flowing back into the living room with the washroom through the drain.

[0003]

However, since the conventional trap uses water as the edging means as described above, when the continuous running water to the trap is cut to some extent, the accumulated water evaporates. To do. Therefore, for example, there is an adverse effect such that an odor is drifting in the living room when returning from a resort condominium or a long-term trip. In addition, water may not stay in the trap sufficiently when the pressure in the drainage pipe is lower than that in the living room, and the edge cutting function of the trap is not reliable.

The present invention has been made to eliminate these defects, and an object thereof is a trap which can surely cut the edge between the water use place side and the drainage destination regardless of the use of water. To provide.

[0005]

The present invention achieves this object, and the gist thereof is a trap for introducing drainage from a water use place and discharging it from a discharge route below, The structure of the trap is such that the inlet portion of the discharge path is formed to project slightly inward of the water introducing chamber, the inlet portion is closed by a lid member made of a material having a smaller specific gravity than water, and the lid member is drained. It is characterized in that it is floated in the water introducing chamber to open the inlet portion.

[0006]

In the trap of the present invention, since the lid member in the water supply chamber has a smaller specific gravity than water, if there is running water from the place of use of water to the water introduction chamber, it rises due to buoyancy along with the volume of water.
Water is discharged from the inlet of the discharge path opened by the rise of the lid member. When the flow of water into the water introducing chamber is stopped, the lid member descends as the water level in the chamber lowers, and the inlet of the discharge path is closed again.

[0007]

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is a sectional view showing a trap I of the present invention. The trap I is composed of a water introducing chamber 10 installed in the middle of the drain pipe 40, and a lid plate 20 as a lid member provided non-fixedly in this chamber. The water introduction chamber 10 has a top 1
At 0 ', it is connected to a water inlet pipe 40a communicating with a water use place such as a bathroom (not shown) in the home or a perforated plate of the floor drain, and at the bottom 10 ", domestic wastewater is discharged to the sewer ( It is joined to a drain pipe 40b serving as a drainage path for discharging to a not-shown drainage pipe 40b, which extends slightly into the interior of the chamber 10. The water introduction chamber 10 limits the movement of the lid plate 20 in the room, In order to ensure that the cover plate 20 closes the end portion 40b ″ of the drainage pipe as the inlet portion when there is no running water into the room, the lower side surface has a tapered surface 11 and is shaped like a bottom, and the inner wall is almost A ring-shaped protrusion 12 is fixed to the center.

The cover plate 20 is a styrofoam disc-shaped member, and as shown in the top view of FIG. 2 (a), has eight openings 22 in the peripheral region, and a central portion 21 that deviates from this opening.
Substantially covers the drain pipe end portion 40b ″. Therefore, the diameter of the central portion 21 is set to be at least larger than the diameter of the drain pipe 40b. The back surface of the lid plate central portion 21 has a raised portion 21 having an inverted trapezoidal cross section. ', And the slope 21 "of the raised portion contacts the drain pipe end 40b" and closes it. The diameter of the lid plate 20 is larger than the diameter of the tapered surface 11 of the water introducing chamber 10 with the drain pipe 40b being covered. It is slightly smaller and functions as a deviation preventing means together with the tapered surface 11. Further, the side surface 20 'of the cover plate 20 has a slightly gentler tapered shape than the tapered surface 11 (Fig. 2 (b)).

In the trap I having the above structure,
In a state where there is no running water from the water introducing pipe 40a in the water introducing chamber 10, the cover plate 20 is on the drain pipe 40b due to gravity and is closed (FIG. 1). This edging prevents backflow of odors etc. from the drainage sewer into the living room. When water enters the water introducing chamber 10 through the pipe 40a due to the use of the washroom,
The water passes through the opening 22 of the cover plate 20, and first, the cover plate 20, the tapered surface 11, the chamber lower portion 10 ″, and the extension portion 40 of the drain pipe 40 b.
When the water enters the space 50 surrounded by b ′ and the water volume reaches the lid plate 20 or more, the lid plate 20 ascends in water or floats on the water surface due to buoyancy. Therefore, the water is drained 4
It is drained from 0b. FIG. 3 shows a state in which water continuously infiltrates into the water introducing chamber 10, the lid plate 20 is restricted from rising due to buoyancy by the projecting piece 12, and the water is drained from the drain pipe 40 b through the opening 22. . Therefore, if the total area of the openings 22 provided at the eight locations is made substantially equal to the cross-sectional area of the pipe 40b,
The water can be smoothly drained without causing deterioration of the drainage function such as water overflowing into the introduction chamber 10. The protrusion 12 also prevents the lid plate 20 from being inverted.

When the running water from the water introducing pipe 40a stops from this state, the lid plate 20 descends along the taper surface 11 as the water surface in the water introducing chamber 10 is lowered by drainage, and the raised portion 21 'is drained. It drops onto the end 40b ″ and closes again.

It should be noted that foreign matter such as hair mixed in the water is stagnate in the space 50 in which some water remains, so that the cover plate 20
It is possible to prevent deterioration of the edge cutting function due to foreign matter entering between the raised portion 21 'and the drain pipe end portion 40b ".

As a means for preventing the displacement of the lid due to the floating and lowering movement of the lid plate, as shown in FIG.
It is also possible to provide a pin 121 on the back surface of 20 in parallel with and close to the side wall of the drain pipe 40b. In this case, it is not necessary to taper the lower part of the side wall of the water introducing chamber 110 so that the diameter of the lid plate matches the diameter of the water introducing chamber 110, and the opening of the lid plate for ensuring water permeability is not necessary. Further, the lid plate 120
If a ring-shaped piece 122 protruding downward is provided around the outside of the pipe 40b on the back surface of the drainage pipe 40b, the drainage pipe 40b extends into the water introducing chamber 110, so that the piece 122 is immersed in the water 160 slightly remaining at the bottom of the chamber 110. . In this case, the pipe 40b with the lid plate 120
Along with the closing of the above, the residual water 160 can also cut the edge of the gas flow communication between the drainage destination and the room with the washroom.

The location of the trap of the present invention is not limited to the middle of the water pipe, but it can be provided on the floor 270 such as a bathroom as shown in FIG. 5, for example. The floor drain trap II introduces the used water into the water introduction chamber 210 through the eye plate 240 and performs the function described.

The material of the cover plate is not limited to Styrofoam, and may be, for example, plastic, which has a smaller specific gravity than water and does not cause corrosion change due to long-term use.

[0015]

[Effect] As described above, in the trap of the present invention, the edge is cut by the solid lid member, so that it does not evaporate like water, it can cope with irregular water usage patterns, and the reliability of the edge cutting function of the trap is high. Improve sex.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a trap of the present invention.

FIG. 2 is a front view (a) and a cross-sectional side view (b) viewed from above the cover plate.

FIG. 3 is a cross-sectional view showing a state where running water is continuously present in the trap.

FIG. 4 is a cross-sectional view showing another example of the trap of the present invention.

FIG. 5 is a sectional view showing a floor drain trap.

[Explanation of symbols]

 I, II Trap 10, 110, 210 Water introduction chamber 11 Tapered surface 12 Projection piece 20, 120 Cover plate 21 'Raised part 22 Opening 40a Water introduction pipe 40b Drain pipe 40b' Extension 40b "Drain pipe end 121 Pin 122 Ring Piece

Claims (1)

[Claims] 1. A trap in which drainage from a place of use of water is introduced and discharged from a lower discharge path, wherein the structure of the trap is such that an inlet portion of the discharge path is located inside a water introduction chamber. A trap which is formed so as to be slightly projecting, the inlet portion is closed by a lid member made of a material having a specific gravity smaller than that of water, and the lid member is floated into the water introducing chamber by drainage to open the inlet portion.