JPH0447499Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is designed to connect a water distribution main and an air valve to a water distribution main such as a water pipe in order to maintain the air valve vertically. The present invention relates to an air valve mounting base structure provided between the air valves.

[Problems that conventional technology and ideas try to solve]

Conventionally, when installing an air valve attached to a water distribution main, it is necessary to install the air valve with its vertical axis vertical so that the float valve element or the floating valve element can operate smoothly. However, if the water distribution main pipe is tilted with respect to the horizontal, the air valve attached thereto is also tilted with respect to the vertical, and there is a problem that the air valve cannot be operated in a good condition.

An object of the present invention is to provide an air valve mounting base structure that solves the above problems.

[Means to solve the problem]

In order to achieve the above object, the air valve mounting base structure according to the present invention is provided with a repair valve on the upper part, an inner cover attached to the lower part of the repair valve, and an inner lid attached to the lower part of the repair valve. It has a presser cover that is interconnected with the inner cover via an elastic seal ring that is interposed between the inner cover and the inner cover, and a sliding spherical surface portion and a connecting flange portion that the inner cover and the presser cover fit onto. A posture control base comprising a connecting valve body is disposed, and the inner cover and the holding cover are moved close to each other and separated from each other to tension or relax the elastic seal ring, and the tension of the elastic seal ring is adjusted. The sliding spherical surface of the connecting valve body is pressed in the radial direction by force, so that the connecting valve body of the base supports the inner cover, the holding cover, and the repair valve of the base at a predetermined angle. It is composed of

[Effect]

If the water distribution main is tilted at a certain angle with respect to the horizontal, the connection valve attached to it will also be installed tilted in the same direction and at a corresponding angle with respect to the vertical. After separating the presser cover from each other, they are tilted together with the elastic seal ring along the outer circumferential surface of the sliding spherical part, and when the axes of the inner cover and presser cover are vertical, they are brought closer to each other. It is fixed to the connecting valve body by
A repair valve attached to the top of such an attitude control base is also held vertically.

〔Example〕

An embodiment will be described with reference to the drawings. In FIG. 3, 1 is a water pipe or other water distribution main pipe, and on the upper surface of a riser pipe 1a protruding from the water pipe 1, there is a structure according to the present invention. Air valve mounting base structure 2
However, an air valve 3 is further provided on the upper part of the base structure 2.
are provided respectively. In the illustrated example, the air valve 3
is integrated with the fire stopper 4 to form a fire stopcock 5 with an air valve, and is connected to the upper part of the base structure 2 by a connector such as a bolt (not shown). After the air is exhausted from the air valve 3, the filling of the inside of the valve box 6 is completed, and the float valve body 7 closes the air hole at the tip of the valve seat receiver 8. However, in this case, if the air valve 3 is not installed vertically, ,
The float valve body 7 does not operate smoothly. Specifically, the inclination of the vertical axis of the air valve 3 is limited to within 2 degrees from the vertical.

Thus, the air valve mounting base structure 2 includes a repair valve 9 on the upper part and an attitude control base 10 disposed between the repair valve 9 and the water distribution main pipe 1. .

As shown in FIGS. 1 and 2, the repair valve 9 is equipped with a valve body 12 in which a valve body 11 is contained, and by rotating the valve body 11 via a handle 13, the valve body The water passage hole 14 inside the air valve 12 is opened or closed, and parts of the fire extinguisher 5 with an air valve 5 are repaired or the whole is replaced without cutting off the water on the water distribution main 1 side.
Note that 15 is a valve seat that comes into sliding contact with the outer peripheral surface of the valve body 11, and 16 is a valve stem that is engaged with a part of the valve body 11. Connection with the air valve-equipped extinguisher hydrant 5 is made by a flange 17 at the upper end of the valve box 12 and a bolt-and-nut connection (not shown).

Thus, the attitude control base 10 includes an inner lid 18 attached to the lower part of the repair valve 9, a presser lid 19 interconnected with the inner lid 18, a sliding spherical surface portion 20, and a connecting flange portion 21. a connection valve body 22 having;
It is equipped with The inner lid 18 and the retainer lid 19 are connected to each other via an elastic seal ring 23 interposed between them. Specifically, the elastic seal ring 23 has a substantially trapezoidal cross section, and its inner circumferential surface is in sliding contact with the substantially spherical outer circumferential surface 24 of the sliding spherical surface portion 20 . Each opposing surface 2 of the inner lid 18 and the presser lid 19
5 and 26, that is, the boundary portion, is provided with a storage recess 27 that substantially matches the cross-sectional shape of the elastic seal ring 23. The inner lid 18 and the presser lid 19 are fitted externally with a minute gap between their inner circumferential surfaces and the outer circumferential surface 24 of the sliding spherical surface portion 20, or in a slidable manner. The inner lid 18 and the presser lid 19 are connected by fastening the flanges 29 and 30 using connectors 28 such as bolts, and the repair valve 9
The lower flange 31 of the inner lid 18 and the upper flange 3 of the inner lid 18
2 are connected by a connecting tool 33... A coupling tool for attaching the connection flange portion 21 is omitted from the illustration.

The presser lid 19 is divided into two parts to enable assembly, and specifically, the flange 30 is divided into two parts when viewed from above.
The mating protrusion 35 formed at the bottom of the connector 3
4... are connected. 36... is a screw hole screwed into the presser cover 19, and a fixing device 37... such as a hexagonal socket bolt is screwed through to press and fix the sliding spherical surface part 20 at a desired tilt angle posture. do. Inner lid 18
A valve seat 39 that comes into sliding contact with the valve body 11 of the repair valve 9 is fixed to the outlet side of the water passage hole 38 .

Then, by screwing the nut forward and backward with respect to the bolt using the connecting tool 28, the inner cover 18 and the presser cover 1 are screwed together.
The elastic seal ring 23 can be tightened or relaxed by moving the elastic seal ring 23 closer to and away from each other. The elastic seal ring 23 is made of an elastic material such as rubber or plastic, and therefore, in a tensioned state compressed in the vertical direction, its cross section swells in the radial direction and covers the outer peripheral surface 24 of the sliding spherical surface portion 20. By pressing and crimping them in the radial direction, the inner lid 18 and the holding lid 19 are both fixed to the connection valve body 22, and water is completely shut off. By loosening the elastic seal ring 23 and reducing its radial pressing force, the inner cover 18 and the presser cover 19 are tilted with respect to the vertical direction, and then the connector 28 is tightened to form the connection valve shown by the imaginary line. It is possible to support them at a predetermined angle with respect to the body 22. Thereafter, the fixing tool 37 may be screwed forward to secure the fixation more securely.

The water distribution main 1 may be installed at a predetermined angle with respect to the horizontal due to various reasons. Although the inner cover 18 and the retainer cover 19 can be held vertically by the above-described method, the repair valve 9 also becomes vertical along with them. Furthermore, when viewed in plan, the direction of the air valve 3 and the like can be adjusted by freely rotating the air valve-equipped fire plug 5 together with the inner lid 18 and the like about the axis of the spherical portion 20 . This prevents misalignment of the piping direction, piping position, and bolt holes with respect to the valve chamber cover installed on the road surface.
If there is a problem, it can be corrected in the desired direction and position.

Unlike the case of the above embodiment, only an air valve may be attached to the upper part of the repair valve 9, and the air valve may be either single-port or double-port, and further, A structure in which a floating valve body is provided above the float valve body 7 may be used. It is also preferable to use a spiral valve as the repair valve 9.

A valve seat 39 that slides into contact with the lower part of the valve body 11 of the repair valve 9
is provided at the upper end of the inner lid 18, so there is no need to divide the valve box 12 of the repair valve 9 into two parts.
The valve body 11 can be taken out by lifting the valve body 2 upward.

[Effect of idea]

Since the present invention is configured as described above, it produces the effects described below.

Even when the water distribution main pipe 1 is inclined with respect to the horizontal, the vertical shaft of the air valve 5 can be installed vertically, and the float valve body 7 and the floating valve body can be operated smoothly.

For the connection valve body 22, the inner cover 18 and the presser cover 1
9 can be tilted by a predetermined angle, adjusted, and fixed very easily and quickly.

The inner lid 18 and the retaining lid 19 can be rotated and fixed with respect to the center of the water passage hole 38 when viewed from above, so that the direction of the air valve 3 attached to the upper part of the repair valve 9 can be easily and quickly set. By this,
Even if there is a misalignment of the piping direction or mounting bolt hole near the air valve 3, it can be easily corrected, and the air valve 3 etc. can be installed in the correct position and direction relative to the valve chamber cover installed on the road surface. becomes.

The adjustment in the vertical direction and the correction and adjustment in the plane direction of the air valve 3 can be performed simultaneously, making the adjustment work easier.
It can be done quickly.

[Brief explanation of the drawing]

Fig. 1 is an enlarged cross-sectional front view showing an embodiment of the present invention, Fig. 2 is a cross-sectional view taken along the - arrow in Fig. 1, and Fig. 3 shows an attached state of the air valve mounting base structure according to the present invention. It is a half-cut front view. 1...Water main pipe, 9...Repair valve, 10...Position control base, 18...Inner cover, 19...Pressure cover, 2
0... Sliding spherical surface part, 21... Connection flange part, 2
2... Connection valve body, 23... Elastic seal ring.

Claims (1)

[Scope of Claim for Utility Model Registration] A repair valve 9 is provided at the top, and an inner lid 18 is installed below the repair valve 9.
, a presser cover 19 that is interconnected with the inner cover 18 via an elastic seal ring 23 interposed between the inner cover 18 and a slider that the inner cover 18 and the presser cover 19 fit onto each other. A posture control base 10 comprising a connection valve body 22 having a spherical surface portion 20 and a connection flange portion 21 is provided, and the inner cover 18 and the presser cover 19 are moved close to each other and separated from each other. The elastic seal ring 23 is tensed or relaxed, and the sliding spherical surface portion 20 of the connection valve body 22 is pressed in the radial direction by the tension force of the elastic seal ring 23, so that the connection valve body 22 of the base 10 is pressed at a predetermined angle. An air valve mounting base structure characterized in that it is configured to support the inner cover 18, the holding cover 19, and the repair valve 9 of the base 10.