JP2002138524A - Protection cover for city-water gauge valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a protection cover for city-water gauge valve inside a concrete box that a load on a road, an influx of a rainwater and earth or sand do not cause any effect to the gauge valve even if e gauge valve or a city-water duct is buried shallowly into the earth. SOLUTION: The cover is equipped with a first cylinder 10 with a flange part 13 attached in its lower edge which is inserted into a concrete box 50 and a second cylinder 20 which is inserted into it and slides each other with an inner protruding part 23 with a drain hole 231 which protrudes into the cylinder attached in the lower edge. In the upper part of an outer circumferential face 21 of the second cylinder 20, a first rubber hat 30 is attached thereto which adheres to the inner circumferential face of the concrete box 50. Then, the inner protruded part 23 of the second cylinder is put onto a flange 611 of a city-water gauge valve 60. At the same time, the second rubber hat 40 that is inserted from the inner protruded part 23 into a flange cover 61 of the city-water gauge valve 60 is built.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a protective cover for a water gate valve of a water pipe buried under a road.

[0002]

2. Description of the Related Art As shown in FIG. 10, a conventional water gate valve 1 is provided with a concrete box 2 surrounding and protecting a water gate valve 1 on a water pipe 1a via a sandy soil 3. However, standards for the burial depth of roads such as national roads have been relaxed so that the underground burial of the water pipe 1a can be buried shallowly.
Accordingly, the water gate valve 1 has also been reduced in size. When a conventional box 2 is used as a concrete box for maintaining and managing the water supply, the distance between the water pipe 1a and the concrete box base 4 is shortened. Water leaks from the joints of the pipes 1a are likely to occur, and the spindle 1b for operating the gate valve 1 from the road is difficult to operate. Therefore, the present inventor has conducted extensive research and, as a result, changed the concrete box to a shallow buried type so that the distance between the concrete box base and the buried water pipe can be increased, and the concrete box is made of synthetic resin. The above problem was successfully solved by inserting a protective cover so that the area above the flange of the water gate valve could be protected from rainwater and earth and sand.

[0003]

That is, the present invention provides:
An object of the present invention is to provide a protective cover for a water gate valve in a concrete box so that a load on a road surface, rainwater, inflow of earth and sand, and the like are not affected even when a water gate valve and a water pipe are buried shallowly. Further, the present invention provides a protective cover for a water gate valve which can be adapted to the shape of the water gate valve which differs for each maker. Further, the present invention provides a protective cover for a water gate, which is capable of freely adjusting the height of the protective cover to be able to finely adjust the burial depth of a water gate and a water pipe or a concrete box. Things.

[0004]

That is, in order to achieve the above object, a protective cover for a water gate valve according to the present invention, as shown in FIGS. 13 made of synthetic resin
A second cylinder made of a synthetic resin having a cylindrical portion and a sliding portion fitted with the cylindrical portion and having an inner protruding portion provided with a drain hole at a lower end thereof and having a drain hole protruding into the cylinder; 2
0 on the outer peripheral surface 21 of the concrete box 50
The first rubber hat 30 fitted to the inner peripheral surface 51 of the second cylinder 20 is attached, and the inner protruding portion 23 of the second cylinder 20 is connected to the water gate valve 60.
On the flange 611 of the water supply gate valve 60 from the inner projection 23.
The second rubber hat 40 fitted to the first rubber hat 40 is provided upright. In addition, in order to achieve the above object, the protective cover of the water supply gate valve of the present invention, as shown in FIGS.
A first rubber hat 30 fitted to the inner peripheral surface 51 of the concrete box 50 is attached to an upper part of the outer peripheral surface 21 of the cylinder 20, and the inner protrusion 23 of the second cylinder 20 is
It is placed on the flange 611 of the water gate valve 60, and under the inner peripheral surface 22 of the second synthetic resin cylinder 20,
The second rubber hat 40B fitted to the flange cover 61 of the water gate valve 60 is fixed. In the present invention, the first rubber hat 30 is connected from a fitting portion 32 fitted in a U-shape to the upper end of the cylinder 20 or from a short cylinder 32B fitted on the outer peripheral surface 21 of the cylinder 20 shown in FIG. The provided flexible washer-shaped rubber hat edge 31 is provided, and the edge 311 is bent down so as to be fitted to the inner peripheral surface 51 of the concrete box 50. Further, the hat edge 31 is slightly shorter in the center direction than an appropriate number thereof, and is integrally formed with a shallow groove-shaped drainage 33. In addition, as shown in FIG.
The hat edge 311 may be formed on the rubber hat 30B provided with the drainage 33B with the cutout. Further, in the present invention, the second rubber hat 40 forms a flexible disk-shaped hat edge 41 which can be erected from the inner projection 23 projecting from the lower end of the cylinder 20, and the hat edge 41 is Opening 4 that fits into the outer shape of flange cover 61 of water gate valve 60
3 is formed so that the disc-shaped hat edge 41 is bent upward toward the opening 43 and is in close contact therewith. As shown in FIGS. 8 and 9, the second rubber hat is a cylinder 20.
A rubber hat 40B provided with a hat edge 41B having a flexible disk-shaped drainage hole 411B that can be fitted and fixed to the lower portion of the inner peripheral surface 22 of the diaper.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention is shown in FIGS. The protective cover of the water gate valve of the present embodiment includes a first cylinder 10 made of synthetic resin and a second cylinder 20 made of synthetic resin.
And a first rubber hat 30 and a second rubber hat 40. The first cylinder 10 made of synthetic resin has a flange 1 at the lower end.
3 made of a known synthetic resin such as a polyvinyl chloride resin provided with a base 5 in a concrete box 50.
2 is inserted. The second cylinder 20 made of synthetic resin is slidably fitted inside the first cylinder 10, and the same material as that of the first cylinder 10 is used. The second cylinder 20 has an inner protruding portion 23 protruding from the inner peripheral surface at the lower end.
Is provided so as to be mounted on the flange 611 of the water gate valve 60. As shown in FIGS. 2, 3 and 4, the first rubber hat 30 has a U-shaped portion 32 fitted and fixed to the upper end of the second cylinder 20.
And a flexible washer-shaped rubber hat rim 31 connected thereto.
The concrete box can be bent down and fitted to the inner peripheral surface 51 of the concrete box. U-shaped part 3
Instead of the second cylinder 2, as shown in FIGS.
The hat edge 31 may be provided continuously from the short cylindrical portion 32B fitted and fixed to the outer peripheral surface 21 of the “0”. Drainage 33
Are provided in an appropriate number with respect to the hat edge 31, but are formed integrally with the hat edge 31, are slightly shorter in the center direction than the hat edge 31, and form a shallow groove to allow drainage. The first rubber hat is, as shown in FIG.
The U-shaped portion 32 or the short cylindrical portion 32B, a washer-shaped rubber hat edge 31B connected to the U-shaped portion 32B, and a drainage 33B provided with a notch at the hat edge 311B may be used as the drain 30B. The second rubber hat 40 is shown in FIGS.
As shown in the figure, a flexible disk-shaped rubber hat edge 41 connected to the upper end of a short cylindrical portion 42 whose bottom surface can be fixed on the inner protruding portion 23 of the second cylinder 20 is provided. 43 is formed so as to be fitted to and adhere to the outer shape of the flange cover 61 of the water gate valve 60. As shown in FIGS. 8 and 9, the second rubber hat is a second cylinder 20.
Short cylindrical portion 42 fitted and fixed to the lower portion of the inner peripheral surface 22 of
B and a flexible washer-shaped rubber hat edge 41B with a drain hole 411B provided with an opening 43B continuously provided at the lower end thereof.
40B consisting of Therefore, when the water pipe and the water gate valve 60 are buried, if the synthetic resin cylinder 10 and the synthetic resin cylinder 20 which is fitted and slid therein are inserted into the concrete box 50, FIG. As shown in FIG. 8, the first
The rubber hat 30 is fitted on the inner peripheral surface 51 of the concrete box 50,
The second rubber hat 40 attached to 3 can be fitted to the flange cover 61 of the water gate valve 60. In this case, the distance between the concrete box base 52 and the water pipe is such that the first rubber hat 10 can freely move and fit on the inner peripheral surface 51 of the concrete box 50, and
Since the first cylinder 10 and the second cylinder 20 can slide, fine adjustment can be easily performed. In addition, since the synthetic resin cylinder 10 and the synthetic resin cylinder 20 sliding on the cylinder are inserted into the concrete box 50, the load acting on the road surface does not act on the cylinder 10 and the cylinder 20. No burden is placed on the gate valve 60 and the water pipe. Furthermore, the water flowing from the road is
The rubber hat drains out into the sand 70 from the drain 23 or 23B, and flows out into the sand 70 through the drain hole 321 of the second rubber hat 30. In addition, most of the earth and sand flowing from the road is accumulated on the first rubber hat 30 and the second rubber hat 40, and thus may be collected periodically.

[0006]

According to the present invention, even if the water pipe and the water gate valve are buried shallowly with the shallow buried concrete box, the distance between the concrete box base and the water pipe can be reduced by inserting the protective cover into the concrete box. It is easy to fine-tune the distance,
The load on the road surface does not act on the water gate valve or water pipe by the protective cover, and further provides many advantages such as easy drainage of rainwater and collection of sediment. By increasing the length of the cylinder, the concrete box itself can be accommodated in one or two steps of shallow buried type.

[Brief description of the drawings]

FIG. 1 is an overall explanatory diagram showing an embodiment of the present invention.

FIG. 2 is a plan view of a first rubber hat used in FIG.

FIG. 3 is a cross-sectional explanatory view taken along the line AA of FIG. 2;

FIG. 4 is another explanatory diagram of the AA cross section of FIG. 2;

FIG. 5 is an explanatory view of another first rubber hat used in FIG. 2;

FIG. 6 is another plan view of the first rubber hat used in FIG.

FIG. 7 is a plan view of a second rubber hat used in FIG.

FIG. 8 is an overall explanatory diagram showing another embodiment of the present invention.

FIG. 9 is a plan view of another second rubber hat used in FIG. 8;

FIG. 10 is an overall explanatory diagram showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 First cylinder made of synthetic resin 11 Outer peripheral surface of first cylinder made of synthetic resin 12 Inner peripheral surface of first cylinder made of synthetic resin 20 Second cylinder made of synthetic resin 21 Outer peripheral surface of second cylinder made of synthetic resin 22 Synthetic resin Inner peripheral surface of two cylinders 30, 30B First rubber hat 40, 40B Second rubber hat 50 Concrete box 51 Inner peripheral surface of concrete box 60 Water gate valve 61 Flange cover of water gate valve 70 Sand

Claims (2)

[Claims] 1. A synthetic resin first cylinder 10 having a flange 13 provided at a lower end inserted into a concrete box 50, and a drainer which fits into and slides on the lower end and projects into the cylinder at a lower end. A second cylinder 20 made of synthetic resin provided with an inner protruding portion 23 having a hole, and an inner peripheral surface 5 of the concrete box 50 is provided above an outer peripheral surface 21 of the second cylinder 20.
1 is attached to the first rubber hat 30, and the second rubber hat 30 is attached to the second rubber hat 30.
The inner protruding portion 23 of the cylinder 20 is connected to the flange 6 of the water gate valve 60.
11 and the inner projection 2
3. A protection cover for a water gate valve, wherein a second rubber hat 40 is provided upright to be fitted to the flange cover 61 of the water gate valve 60. 2. On the outer peripheral surface 21 of the second cylinder 20,
The first rubber hat 30 fitted to the inner peripheral surface 51 of the concrete box 50 is attached, and the inner protruding portion 23 of the second cylinder 20 is connected to the flange 61 of the water gate valve 60.
1 and the second cylinder 2 made of synthetic resin.
The protection cover for a water gate valve according to claim 1, wherein a second rubber hat (40B) fitted to the flange cover (61) of the water gate valve (60) is fixed to a lower portion of the inner peripheral surface (22) of the water gate valve (60).