JPH11124972A - Overflow-prevention drain during drainage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To quickly drain water, when a large amount of water flows into a drain pipe at a time but cannot flow smoothly beyond the position of residual air in the pipe because of the air, by discharging the air remaining in the pipe to the outside and to allow small dust making contact with the peripheral surface of a strainer at the lower end during drainage to flow in from an inlet as it is inclined by balance action in the direction to apply load. SOLUTION: In an overflow-prevention drain during drainage, a corollaceous part is molded at the edge of the lower part of an inverted-bowl-shaped strainer 1 having an air hole 2 in its top surface, and a projecting part is molded at the lower end portion of the corollaceous part. A plurality of inlet recess parts 5 are provided on both sides of the projecting part, and an air vent pipe 6 communicating with the air hole 2 is coupled to the inside of the strainer 1. A plurality of leg springs 7 are divergently mounted in the upper part of the pipe 6, and the terminal part of each leg spring 7 is constricted and is joined and hooked to the inner surface of a drain pipe 10 through an inner draining cylinder 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overflow in drainage.
This is related to drainage prevention, and is used when the drainage pipe cannot be swallowed due to the resistance of air remaining in the drainage pipe at a stretch on a veranda or bathhouse of a general house. In order to remove large amount of wastewater quickly by removing the air staying in the inside, and to apply the load by the weighing action of the dust that is in contact with the lower peripheral surface of the strainer placed on the floor at the time of drainage It is intended to be able to flow into the drain pipe from the inflow port surely.

[0002]

2. Description of the Related Art The applicant of the present application has proposed a drain device using a waterproof sheet in Japanese Utility Model Publication No. 5-19450. In such a device, the waterproof sheet is firmly held between the flanges of the inner and outer drainage cylinders to exhibit a waterproof function. In addition, the inner and outer cylinders have an effect that the male screw and the female screw can be formed easily and reliably by machining such as roll forming.

[0003]

However, even in the case of the above-mentioned drain, when the drainage flows into the inner cylinder and the drainage pipe through the perforated plate, the air staying in the drainage pipe causes the drainage. Drainage cannot enter from the position where the air stays. In addition, when there is garbage mixed in the drainage, it often happens that the eyeglass is covered and clogged and the drainage function cannot be exhibited.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned disadvantages of the conventional drain and to achieve the object of the present invention. SUMMARY OF THE INVENTION The present invention relates to a drain-type drain for drainage prevention, which has an air hole at the center of the top surface and an inflow hole at the top surface portion and the peripheral side surface portion. A corolla is formed at the lower periphery of the nape, and a protrusion is formed at the lower end of the corolla, and a plurality of inflow recesses are provided on both sides of the protrusion, and the air hole is formed at the top of the inner surface of the strainer. Combine the communicating air vent pipes, attach a plurality of leg springs to the upper peripheral surface of the pipe so as to be in a flared state, narrow the end of the leg springs, insert them into the drainage inner cylinder, and insert the inner surface of the drainage pipe. It is designed to be joined to the joint.

[0005]

EXAMPLES In FIG, 1 is substantially inverted Wanko type stress - is Na, are molded a plurality of inlet holes 3 on its top surface 1 ₁ and the circumferential side surface 1 _2. The height H of the strainer is arbitrary,
It is allowed that the top surface is not flooded even if there is a certain amount of drainage, and in the illustrated example, it is set to 3.0 cm. 2
The stress - a air hole drilled in the center portion of the burner top face 1 _1, stress - na holes with raised shaft portion 2 ₁ a top surface portion of the inner stress - molded into Na 1 integrally, and the an air hole 2 communicated with, are drilled screw holes 2 ₂ for connecting the air vent pipe at the lower end portion of the projecting shaft portion. 3 is strainer 1
Are a plurality of drainage inflow holes formed at positions avoiding the air holes and at the side peripheral surface. Reference numeral 4 denotes a corolla, which is formed by assembling a set of flower pieces 41 to 4n formed along the periphery of the lower end of the strainer _{1. The} illustrated example shows an eight-valve shape. Reference numeral 5 denotes an inverted U-shaped inflow concave portion, and a plurality of drainage / small dust can flow in on both sides of the protrusion 40 formed at the lower end of the corolla 4. 6 is a vent pipe-shaped shaft, the upper end portion stress - are attached to the screw hole 2 _second protruding shaft portion 2 ₁ of Na 1. In addition, the length L of the air vent pipe is related to the length of the drain pipe described later, and is set to be at least shorter than the length of the drain pipe 10.
In the illustrated example, it is set to about 30 cm. Reference numeral 7 denotes a plurality of leg springs provided on the upper part of the air vent pipe 6, which are fixed so that the base of a narrow spring plate is fixed with studs so that the terminal is in a flared state. 8 the inner tube having a flange _81, 9 is the outer tube having a flange 9 ₁ installed on the floor structure a, b and out of both the cylinder 8, 9 in the cylindrical portion of each - male screw 8 by Le molding ₂ and fitted to the cylindrical portion of the internal thread 9 _2, waterproof in the flanges sheet - the door b is formed a waterproof flat d firmly clamped. 10 is a drainage pipe, are fitted fixed to its upper end portion to the tubular portion having an internal thread 9 ₂ of the outer tube 8. 11 is a lock plate for clamping turning, are formed into a protruding at a plurality of flanges ₈₁ of the plane of the inner cylinder 8. The strainer 1 and the air vent pipe 6 can be made of a non-ferrous metal material, and the spring legs 7 can be made of a metal material.

[0006]

[Specific process example] A concrete construction example based on the embodiment of the present invention will be described. First, fit the outer tube 9 to the opening c of the floor structure a, and fixed to pressing the flange 9 ₁ in the plane of the floor structure. Next, a waterproof sheet having an opening b ₁ on the flange 9 ₁ - the door - Tension bets b, the insert while screwing the outer tube 9 to the inner tube 8 through the opening b ₁ thereon waterproof sheet The flanges 8 ₁ and 9 ₁ are firmly sandwiched, and the inner and outer cylinders are screwed together and fixed. Then, stress - the inner cylinder 8 narrowed terminal part of the divergent state of the leg spring 7 when inserting the air vent pipe 6 attached to the air holes with raised shaft portion 2 ₁ of Na 1 to the inner cylinder 8 Push down until the lower end of the strainer ₁ hits the flange surface 81 of the inner cylinder.

When drainage is performed in this state, sewage enters the inner cylinder 8 through the drainage inlet 3 of the strainer 1 and is discharged to a predetermined outside through the drainage pipe 10. In this case, when a large amount of wastewater flows into the strainer 1 at a stretch, if there is air remaining in the middle of the drainage pipe 10,
Waterproof sheet by by the air flow of sewage stagnates - but sewage Doo plane d will overflows, stress and air rises from the lower end ₆₁ of the vent pipe 6 - the drain pipe from the air hole 2 of Na top surface Air trapped in 10 is exhaled into the atmosphere. Due to the release of the air, a large amount of wastewater flows toward the wastewater outlet through the pipe 10.

In the case where small pieces of dust are mixed in the wastewater to be drained, when the small pieces of dust come into contact with the corolla 4 of the strainer 1, the portion where the inflow concave portion 5 is located enters from the concave portion. . Then, when it comes into contact with the protruding portion 40 of the corolla, a balance action acts on the protruding portion, and the protruding portion inclines in the direction in which the load is applied and enters the inside from the inflow concave portion 5 on either side of the protruding portion 40.

[0009]

According to the present invention having the above structure, when a large amount of wastewater flows into the drainage pipe from the strainer at once, the flow that cannot be swallowed due to the resistance of the air staying in the drainage pipe is generated. Even in the case where it stops, the residual air in the drainage pipe enters through the lower end of the air release pipe and is discharged to the outside through the air hole at the top of the strainer. As a result, a large amount of sewage can be drained at once. In addition, since the corolla around the lower part of the strainer is formed, when the small piece dust mixed with the sewage reaches the lower end peripheral surface of the strainer at the time of drainage and comes into contact with the protrusion of the corolla, It is inclined in one direction in which the load is applied by the balance action, enters the drain pipe from the inlets on both sides of the protrusion, and has the effect of being drained together with the sewage, and the clogging of the strainer is eliminated. It is useful as a drain for preventing overflow in drainage.

[Brief description of the drawings]

FIG. 1 is a plan view of an overflow prevention drain during drainage according to the present invention.

FIG. 2 is a bottom view of FIG.

FIG. 3 is a reduced sectional view taken along line 3-3 in FIG.

FIG. 4 is an enlarged sectional view of FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Strainer 2 Air hole 3 Drainage flow hole 4 Corolla part 5 Dust inflow recess 6 Air release pipe 7 Leg spring 8 Drain inner cylinder 9 Drain outer cylinder 10 Drain pipe 11 Hanging piece a Floor structure b Floor waterproof sheet G Opening of floor structure

Claims (1)

[Claims] 1. A lower peripheral portion of a reverse-curved strainer (1) having an air hole (2) at the center of the top surface and an inflow hole (3) at the top surface portion and the peripheral side portion. To form a corolla (4)
In addition, a protrusion (40) is formed at the lower end of the corolla and a plurality of inflow recesses (5) are provided on both sides of the protrusion, and an air vent pipe (6) communicating with the air hole is provided at the top of the inner surface of the strainer. ), And a plurality of leg springs
(7) is installed so as to be in a divergent state, and the end portion of the leg spring is narrowed and inserted into the drainage inner cylinder (8), and is also joined to the inner surface of the drainage pipe (10). A drain for preventing overflow during drainage.