JPH11247281A - Catch basin - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate attachment/detachment of a trap and prevent the contraflow and malodor of sewage water by mounting a trap in a fittingly fixable state to a branch pipe socket part in a catch basin, and mounting a cover, closable by a means such as a hinge, on the opening of the trap. SOLUTION: A cleaning opening is provided at the upper end of a catch basin body 1, and a main pipe socket part 4 and a branch pipe socket part 3 are provided at the opposed side faces of the bottom part of the body 1. A branch pipe side opening part 6 of a U-shape trap 5 is insert-fitted to the inner peripheral surface of the branch pipe socket part 4. A recessed groove is formed at the outer peripheral surface of the connecting opening part 6 of the U-shape trap 5, and watertightness is held by an O-ring 7 fitted into the recessed groove. A cover is mounted on the opening part of the U-shape trap 5, and the cover is closably fitted so as to be easily opened/closed by the water pressure of sewage flowing down into the U-shape trap 5 through a branch pipe. Attachment/detachment of the U-shape trap is therefore facilitated, and the contraflow and malodor of sewage water can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a synthetic resin drainage basin for connecting a drainage pipe in a residential area to a sewer pipe.

[0002]

2. Description of the Related Art As shown in FIG. 5, a conventional drainage basin made of synthetic resin (hereinafter referred to as a drainage basin) has a main body provided with a cleaning port 21 at an upper end thereof, and a main body provided with a side facing a bottom of the main body. A main pipe port 23 and a branch pipe port 24;
A U-shaped trap 25 is attached to the branch pipe port 24 integrally with the main body in order to prevent odor from the sewer main pipe.

[0003]

The above U-shaped trap is
Although it is necessary to attach it to one of the connection ports at both ends of the branch pipe that leads indoors, recently, as the division of labor progresses, workers connecting the branch pipe to the drainage basin that communicates with the sewer main pipe, indoor washbasins and bathtubs Since the operator connected to the other connection port of the branch pipe connected to the other pipe is not necessarily the same, there is a case where a so-called double trap pipe for attaching a U-shaped trap to both ends of the branch pipe due to an error may occur.

In this case, in order to recover the flow in the branch pipe, it is necessary to remove one of the U-shaped traps. In order to use a pre-molded one in the drainage basin (see FIG. 5), the trap 25 in the drainage basin must be cut and taken out or the drainage basin itself must be replaced. In addition, waste may adhere to and solidify on the bottom of the trap due to long-term use, which may deteriorate the flow of sewage or clog.In such a case, cleaning of the inside of the trap is not easy, and in the worst case, Similar to the above, it is necessary to cut the trap portion or replace the drainage basin itself.

SUMMARY OF THE INVENTION An object of the present invention is to provide a drainage basin in which a trap can be easily attached and detached in a drainage basin, the trap can be easily repaired even when a double trap pipe is provided, and the trap portion can be easily cleaned. Another object of the present invention is to provide a drainage basin capable of completely preventing backflow and offensive odor of sewage from a sewer main.

[0006]

According to the drainage basin of the present invention, a trap can be freely attached to a branch pipe receiving portion in the drainage basin. The fitting of the trap is performed by inserting the connection opening of the trap into the branch pipe receiving portion of the drainage basin,
A preferred method is to provide a flange on the periphery of the connection opening of the trap and to engage this flange with a locking piece of a ridge formed around the branch pipe receiving portion of the drainage basin. Since the trap can be freely fitted into the branch pipe receiving portion as described above, the trap can be easily attached and detached. There is no need for such a large-scale operation. In addition, the trap section can be easily cleaned.

In the drainage basin of the present invention, a lid that can be opened and closed by means such as a hinge is attached to the opening of the trap in the drainage basin. With this configuration, the backflow of sewage from the sewer pipe can be prevented, and even if the sewage in the trap decreases or disappears due to evaporation or the like, the odor from the sewer main pipe does not enter the room through the branch pipe.

[0008] The drainage basin of the present invention is straight, bent,
It can be applied to any type of drainage basin such as merging. Further, the trap used in the drainage basin of the present invention is not limited to a U-shaped trap, but can be applied to traps of various shapes such as an S-shaped.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the drainage basin of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a diagram showing an example of a drainage basin of the present invention, wherein (a) is a plan view,
FIG. 2B is a schematic sectional view taken along line AA of FIG. FIG.
Fig. 3 is a view showing another example of the drainage basin of the present invention, (a) is a plan view, and (b) is a schematic cross-sectional view taken along the line BB of (a).
3 (a) and 3 (b) are partial perspective views around the branch pipe receiving portion in the drainage basin, and FIG. 4 is a schematic sectional view of another example of the drainage basin of the present invention. .

As shown in FIG. 1, in the drainage basin of the present invention, a cleaning port 2 is provided at an upper end of a drainage basin main body 1, and a main pipe receiving portion 3 and a branch are provided on opposite side surfaces at the bottom of the main body. A pipe receiving portion 4 is provided, and a connection opening 6 on the branch pipe side of the U-shaped trap 5 is inserted into the inner peripheral surface of the branch pipe receiving portion 4 so that it can be fitted. In addition, a concave groove is formed on the outer peripheral surface of the connection opening 6 of the U-shaped trap 5, and watertightness is maintained by an O-ring 7 fitted in the concave groove. In addition,
Instead of the concave groove and the O-ring, a rubber ring may be attached to the outer peripheral surface of the U-shaped trap 5 to maintain watertightness.

FIG. 2 shows another example of a fitting structure of the U-shaped trap in the drainage basin of the present invention. In this example,
A flange 8 is integrally formed on the periphery of the opening 6 'on the branch pipe side of the U-shaped trap 5', and U-shaped as shown in FIG. The locking pieces 9, 9 of the ridge for receiving the flange 8 of the character trap 5 'are integrally formed. In this drainage basin, the U-shaped trap 5 'is put into the drainage basin from the cleaning port 2', and the flange 8 of the U-shaped trap is applied to the concave grooves of the locking pieces 9, 9 and slid downward. Fit. At this time, a locking portion for locking the lower portion of the flange 8 may be provided below the concave groove of the locking piece and fixed.
In this case, in order to maintain watertightness between the U-shaped trap 5 'and the inner wall surface of the drainage basin, it is preferable that a concave groove is provided in the flange 8 and an O-ring 7' is fitted therein. The locking piece may be integrally formed along the lower semicircle of the branch pipe receiving portion 4 'of the drainage basin as shown by 9' in FIG. 3B.

A lid 10 is attached to the opening of the U-shaped trap of the drainage basin of the present invention shown in FIG. This lid 10
Is openably and closably attached to the opening of the U-shaped trap 5 by a hinge structure, and can be easily opened and closed by the water pressure of sewage flowing into the U-shaped trap through the branch pipe.

[0013]

According to the drainage basin of the present invention, the trap connected to the branch pipe in the drainage basin can be easily attached and removed.
Easy to renovate. In addition, the trap section can be easily cleaned, and furthermore, the backflow and offensive odor of the sewage from the sewer main can be completely cut off.

[Brief description of the drawings]

FIG. 1 is a diagram showing an example of a drainage basin of the present invention, wherein (a)
FIG. 2 is a plan view, and FIG. 2B is a schematic sectional view taken along line AA in FIG.

FIG. 2 is a view showing another example of the drainage basin of the present invention;
3A is a plan view, and FIG. 3B is a schematic cross-sectional view taken along line BB in FIG.

3 (a) and 3 (b) are partial perspective views around a branch pipe receiving portion of a drainage basin according to the present invention.

FIG. 4 is a schematic sectional view of an example in which a trap with a lid is attached to the drainage basin of FIG. 1;

FIG. 5 is a schematic sectional view showing an example of a conventional drainage basin.

[Explanation of symbols]

 1 Drainage basin body 2, 2 ', 21 Cleaning port 3, 23 Main pipe port 4, 4', 24 Branch pipe port 5, 5 ', 25 U-shaped trap 6, 6' Branch of U-shaped trap Connection opening on the side 7, 7 'O-ring 8 Flange 9, 9' Locking piece 10 Lid

Claims (2)

[Claims] 1. A drainage basin in which a trap is attached to a branch pipe receiving portion of the drainage basin so as to be freely fitted. 2. The drainage basin according to claim 1, wherein an openable / closable lid is attached to an opening of a trap in the drainage basin.