JPS6115112Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a blind cap device for closing the pipe opening of a concrete pipe when repairing a buried concrete pipe or changing the concrete pipe.

As shown in Figures 1 and 2, there are concrete sewage pipes A and B, and when pipe B is repaired, pipe C is installed as a bypass route, or the pipe is changed and pipe When constructing a new conduit C, a manhole 1 was added at this location to close the mouth of the existing conduit B to prevent water or earth from entering.

The present invention relates to a blind cap device X for closing the pipe port of the existing concrete pipe line B, and provides a blind cap device X that simplifies installation and achieves complete water-tightness.

The structure of the blind cap device X of the present invention will be explained below with reference to the attached drawings. FIG. 3 is a cross-sectional structural diagram of the blind cap device FIG. 4 shows a front view seen from the pipe opening. Reference numeral 3 denotes a blind lid made of a disk whose size matches the inner diameter of the concrete pipe 10, and a slip stopper made of two flat plates having a length larger than the outside diameter of the concrete pipe 10 facing the blind lid 3. Anchor 2 is provided. This blind lid 3 is provided with a fixed plate 5 projecting inward from its circumference, and an annular moving plate 6 with a push ring 9 provided between the blind lid 3 and the anti-slip anchor 2. A water-stopping rubber ring that is inscribed in the inner wall of the concrete pipe 10 is interposed at the point where the annular movable plate 6 contacts the fixed plate 5, and a bolt 7 is inserted between the push ring 9 and the anti-slip anchor 2 to prevent it from slipping. By screwing a nut 8 onto the outside of the anchor 2 and rotating the nut 8, the push ring 9 and the movable plate 6 are moved to the blind cover 3.
The interposed water stop rubber 4 is compressed and swollen by extrusion in the direction so as to come into close contact with the inner wall surface of the concrete pipe 10 to stop water and prevent the inflow of earth and sand. Reference numeral 8' in the figure is a fixing bolt that is in contact with the push ring.

Since the blind cover device of the present invention has the above-described structure, when installing it, insert the blind cover device When the nut 8 is rotated, the push ring 9 is pushed toward the blind cover 3 side together with the movable plate 6, and as a result, the movable plate 6 and the fixed plate 5
The water-stop rubber 4 interposed between the concrete pipe 10 is compressed and bulges to maintain water-stop properties by adhering closely to the inner wall surface of the concrete pipe 10, making it easy to install during construction and completely stopping water. The repair of the concrete pipe buried in pipe B has a promising practical effect, and since there is no water flowing into the existing pipe B and water flows out from pipe A to C. Or make it easier to lift the tube.

[Brief explanation of the drawing]

Fig. 1 shows a side sectional view of the concrete pipe, and Fig. 2 shows a horizontal sectional view thereof. FIG. 3 shows a detailed sectional view of the device of the present invention, and FIG. 4 shows a side view of the same. 1... Manhole, 2... Anti-slip anchor,
3...Blind lid, 4...Water stop rubber.

Claims (1)

[Scope of utility model registration request] It consists of a blind lid 3 made of a disc whose size matches the inner diameter of the concrete pipe 10 to be installed, and an anti-slip anchor 2 made of two flat plates larger than the outside of the concrete pipe. A fixing plate 5 protruding inward is provided, and the blind lid 3
A movable plate 6 with a push ring 9 is provided in the middle of the anti-slip anchor 2, and a water-stop rubber ring 4, which is inscribed in the concrete pipe 10, is interposed at the point where the movable plate 6 and the fixed plate 5 contact. A blind cover device for concrete pipes, characterized in that a bolt 7 is inserted between the pushing ring 9 and the anti-slip anchor 2, and the movable plate 6 is pushed out by operating a nut 8.