JP3036042U - Drainage leak prevention device - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a drainage leak prevention device capable of effectively preventing backflow of drainage even when the diameter of a drainage pipe is small. A cylindrical body is provided between a drain pipe (5) and an adapter (14), and a plurality of rows of crescent-shaped projections (2) are formed on the inner surface of the drain pipe (5) over approximately one-half of the entire circumference. Drainage leak prevention device (1) having a plurality of rows of recesses (3) between protrusions (2)
Intervened.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a drainage leak prevention device formed on an adapter for connecting a sewer pipe and a drainage pipe, and more specifically, when drainage flows back when the sewerage pipe is clogged, the drainage drainage pipe and the drainage pipe are connected. The present invention relates to a device for preventing leakage from a connecting adapter.

[0002]

[Prior art]

 Conventionally, when drainage flows backward, in order to prevent the drainage from leaking from the connection part between the sewer pipe and the drainage pipe, a plurality of crescent-shaped columns are installed inside the adapter that connects the sewer pipe and the drainage pipe. A plurality of rows of concave portions were provided between the convex portions and the convex portions and the convex portions over approximately one half of the inner diameter.

[0003]

[Problems to be solved by the device]

 FIG. 4 is a vertical sectional view showing an implementation state of a conventional adapter- (9). The adapter (9) which is a conventional example is integrally formed with a large-diameter cylindrical portion (10) inscribed in the sewer pipe (6) and a small-diameter cylindrical portion (11) inscribed in the drainage pipe (5). It A plurality of rows of crescent-shaped protrusions (12) are provided on the inner surface of the cylindrical portion (11) that is in contact with the drain pipe (5), and the protrusions (12) and the protrusions (12) are connected to each other. A plurality of rows of crescent-shaped recesses (13) are provided between them.

In the adapter (9) according to the conventional example, the convex portion (8) of the bellows-shaped drain pipe (5) fits into the concave portion (13) of the adapter (9), and the drain pipe (5) The convex portion (12) of the adapter (9) fits in the concave portion (7) of the adapter to prevent the drainage from leaking to the outside through the outer periphery of the bellows portion of the drain pipe (5).

However, in the conventional example, when the diameter of the drainage pipe is small, the convex portion (12) and the concave portion (13) provided on the adapter (9) become the concave portion (7) of the bellows portion of the drainage pipe (5). Since it could not fit into the convex portion (8) without a gap, it was not possible to effectively prevent the drainage from flowing back along the bellows portion of the drainage pipe.

Therefore, an object of the present invention is to provide a drainage leak prevention device that can effectively prevent backflow of drainage even when the diameter of the drainage pipe is small.

[0007]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, a cylindrical body is provided between the drain pipe (5) and the adapter (14), and a plurality of rows of crescent-shaped convex portions (2 ) And the convex portion (2), a drainage leak prevention device (1) having a plurality of rows of concave portions (3) is interposed.

A plurality of crescent-shaped convex portions (2) in a plan view are provided on the inner surface of the drainage leakage prevention device (1) in a plurality of rows in a side view as shown in FIG. In addition, a plurality of rows of concave portions (3) are provided between the convex portions (2).

Since the drainage leak prevention device (1) having such a shape is interposed between the drainage pipe (5) and the adapter (14) covered on the upper part of the sewer pipe (6) as shown in FIG. Even if the diameter of the drainage pipe is too small compared to the diameter of the adapter (14), the convex portion (2) of the drainage leak prevention device (1) fits into the concave portion (7) of the bellows portion of the drainage pipe (5), Further, the recess (3) of the drainage leak prevention device (1) can be fitted into the protrusion (8) of the bellows part of the drainage pipe (5).

As described above, by interposing the drainage leak prevention device (1) according to the present invention between the adapter (14) and the drainage pipe (5), the drainage can be removed from the bellows part of the drainage pipe (5). It is possible to effectively prevent leakage to the outside along the outer circumference.

[0011]

[Embodiment of the invention]

 Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a plan view of a drainage leak prevention device (1) according to the present invention, and FIG. 2 is a sectional view taken along line AA of the same.

The drainage leak prevention device (1) is a cylindrical body, and has a brim (4) at its upper end. The material is preferably synthetic rubber.

A plurality of rows of crescent-shaped protrusions (2) are provided on the inner surface of the drainage leakage prevention device (1) in a plan view and extend over approximately half a circumference. A plurality of crescent-shaped recesses (3) are provided between the projections (2) in a side view.

[0014]

[Effect of the invention]

 Since the present invention is configured as described above, it is possible to effectively prevent backflow of drainage even when the diameter of the drainage pipe is small.

Further, as shown in FIG. 3, in order to tighten the adapter (14) and the drainage leak prevention device (1), a band (15) is attached and the adapter (14) and the sewer pipe (6) are tightened. If the band (15) is attached, it is possible to more effectively prevent the backflow of waste water.

[Brief description of the drawings]

FIG. 1 is a plan view of the present invention.

FIG. 2 is a sectional view taken along the line AA.

FIG. 3 is a vertical sectional view showing an embodiment of the present invention.

FIG. 4 is a vertical cross-sectional view showing an implementation state of a conventional example.

[Explanation of symbols]

 1 ・ ・ Drainage leak prevention device 2 ・ ・ Convex part 3 ・ ・ Concave part 4 ・ ・ Brim edge

Claims (1)

[Utility model registration claims] 1. A flange (4) is provided on the upper end of a cylindrical body, and a plurality of rows of crescent-shaped projections (2) and said projections (2) are provided on the inner side surface thereof over approximately one-half of the inner diameter. A drainage leak prevention device comprising a plurality of rows of recesses (3) provided between the projections (2).