JP3650376B2 - Water connection device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a connection device for a water meter for connecting a water meter in the middle of a water pipe.
[0002]
[Prior art]
Conventionally, water meters connected in the middle of water pipes need to be replaced with the passage of a defined expiration date. Therefore, a connecting device for fixing the water meter in a predetermined position is connected in the middle of the water pipe, and the water meter is connected to the connecting device in a detachable state.
As a conventional connection device, for example, a connection device for a water meter disclosed in Japanese Patent No. 2903388 is known. This connection device comprises a pair of connection plate portions having a connection mechanism portion and a plurality of connection rod portions for connecting a pair of connection plate portions facing each other, and a water pipe connection provided at the outer end of each connection mechanism portion A water pipe is connected to each part, and a water meter is configured to be detachable between the water meter connection parts provided at the inner ends of each connection mechanism part, and in particular, between the lower parts of the pair of connection plate parts in the horizontal direction. Connected by a pair of spaced apart lower connecting rods, and the upper connecting rods are connected between the upper portions of the lower connecting rods in the vertical direction, so that the water meter can be attached and detached smoothly and quickly. Can be done.
[0003]
However, such a conventional connection device is a case where it is accommodated in an underground water meter box, and when a water meter is installed in a pipe shaft or pipe space provided in an apartment house or the like that has been increasing in recent years. In addition to the water supply pipe, various pipes such as gas pipes and electrical installation pipes are installed, and it is difficult to apply in that limited space, and a water meter is directly connected to the water supply pipe. . In such a case, when re-installing the existing water meter, various pipes such as gas pipes and electrical pipes are installed in addition to the water supply pipes, and work within the limited space. Is in a difficult state.
[0004]
Thus, the example actually used by connecting a water meter directly to water supply piping is shown by FIG. A water pipe 103 piped in the building 10 is branched into a branch pipe 102, and a water meter 100 is connected to the branch pipe 102 via a connection pipe 101a. The water meter 100 is connected to the branch pipe 202 via the connection pipe 101b. A stop cock 115 is provided between the branch pipe 102 and the water meter 100. Connection pipes 101a and 101b are used for connection, branch pipes 102 and 202 are connected to one end of each of connection pipes 101a and 101b, and water meter 100 is attached to the other end by connection nuts 105a and 105b. ing. Further, support pipes 104a and 104b are provided in the connection pipes 101a and 101b in the vicinity where the water meter 100 is installed, and the water meter 100 is maintained so as to be fixed at a predetermined position.
[0005]
[Problems to be solved by the invention]
However, when connecting a water meter directly to such a water supply pipe and reconnecting it for replacement, various pipes such as gas pipes and electrical pipes are installed in addition to the water supply pipe. It is difficult to work in the limited space.
When replacing the water meter, various stresses are applied to the existing pipes. If the water meter is removed from the existing pipes, the pipes to be re-installed are easily expanded, narrowed, or twisted. There was a problem that it was difficult to re-install.
This invention is made | formed by such a situation, The length (span) of the installation place of the water meter installed on the ground can be kept constant, and a pipe shift does not arise in the case of re-installation. Thus, a connection device for a water meter is provided, which allows easy re-installation of the water meter.
[0006]
[Means for Solving the Problems]
In order to solve such a problem, the present invention is characterized in that a pair of connecting portions constituting the connecting device are coupled by a connecting pipe. The length of the water meter installation place installed on the ground, the so-called span, can be kept constant, and the water meter can be easily re-installed without causing pipe displacement during the re-installation. The connecting pipe can also be used as a support base material when being fixed to a structure such as a pipe shaft or other piping in the pipe space.
That is, the connecting device for a water meter of the present invention comprises a connecting pipe and a pair of connecting portions provided on both sides of the connecting pipe, and the connecting pipe is attached to each of the pair of connecting portions. And a pair of connecting parts formed integrally with the connecting part. Each pair of connecting parts has a water pipe connecting part and a water meter connecting part on each side. The water pipe connection portions are opposed to each other, and the connection pipe is supported to be fixed to the structure composed of the pipe shaft or other piping in the pipe space while keeping the distance between the pair of connection portions constant. It is characterized by being used as a base material . At least one of the water pipe connection portions may be bent. A check valve may be disposed inside one of the connection bodies.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the invention will be described with reference to the drawings.
First, a first embodiment will be described with reference to FIGS.
FIG. 1 is a front sectional view of a connecting device for a water meter according to a first embodiment of the present invention, FIG. 2 is a plan view of the connecting device for a water meter shown in FIG. 1, and FIG. FIG. 4 is a front view showing a state in which the connection device for a water meter according to the first embodiment of the present invention is installed in a building, and FIG. 5 is a view in FIG. It is a connecting device front sectional view of a water meter with a water meter mounted.
[0008]
As shown in FIG. 1, the connection device for the water meter according to this embodiment is composed of a pair of connection portions 1a and 1b. The connection portions 1a and 1b include connection portions 5a and 5b and connection portions 5a and 5b. It is comprised from the connection body parts 6a and 6b provided on the top. The connection body parts 6a and 6b have a water pipe connection part and a water meter connection part, respectively. The connecting body portion 6a includes a socket main body 7a continuously connected to the connecting portion 5a, a cap nut 9a attached to one end of the socket main body 7a, and a ring fitted to a joint portion between the socket main body 7a and the cap nut 9a. 8a. The connecting body portion 6b fixes the expansion / contraction socket main body 7b continuously connected to the connecting portion 5b, the sleeve 11 fitted to one end of the expansion / contraction socket main body 7b via the packing 13, and the expansion / contraction socket main body 7b and the sleeve 11. And a cap nut 9b attached to the other end of the sleeve 11, and a ring 8b fitted to a joint between the sleeve 11 and the cap nut 9b. The sleeve 11 fitted to the telescopic socket main body 7b is configured to move inside and outside the main body so as to freely advance and retract. The pair of connecting portions 5a and 5b have fitting holes facing each other, and the connecting pipe 4 is fitted into each of them. The connecting pipe 4 keeps the distance between the pair of connecting body portions 6a and 6b constant.
[0009]
2 and 3 show the appearance of the connecting device for the water meter shown in FIG.
FIG. 4 shows a case where a water meter is connected to the connection device shown in FIG. 1 and is actually installed in a pipe. A pair of connecting portions connected by the connecting pipe 4 is joined to a water meter at one end (that is, one end to which the cap nuts 9a and 9b are attached) of the pair of connecting body portions 6a and 6b. A branch pipe branched from the water pipe is joined to each other end. The water pipe 3 piped in the building 10 is branched into a branch pipe 2a, and a water meter 100 is connected to the branch pipe 2a. The branch pipe 2a side branched from the water pipe 3 is upstream (left side in the figure), and the opposite side, that is, the branch pipe 2b side is downstream (right side in the figure). The water meter 100 is connected to the branch pipes 2a and 2b via a connecting device. The connection device includes a pair of connection portions 1a and 1b and a connection pipe 4, and the connection portions 1a and 1b include connection body portions 6a and 6b and connection portions 5a and 5b connected to the connection body portions, respectively. The connection pipe 4 connects these connection parts 5a and 5b. The branch pipes 2a and 2b are connected to one ends of the connecting body portions 6a and 6b, respectively, and the water meter 100 is attached to the other ends by cap nuts (connection nuts) 9a and 9b. Further, a stop cock 15 is provided in the vicinity of the branch point from the water pipe 3 of the branch pipe 2a.
[0010]
Next, a situation in which a water meter is installed in a pipe shaft or pipe space provided in a building will be described, and a method for re-installing an existing water meter will be described. When the predetermined time has come and it is necessary to replace the water meter, first, the stop cock 15 is closed to stop water flow. Next, the cap nuts 9a and 9b are loosened to remove the water meter from the connecting body portions 6a and 6b. After removing the old water meter 100, the new water meter 100 is fitted into the connecting body parts 6a and 6b. The new water meter is screwed with the cap nuts 9a and 9b, and then the water stop cock 15 is opened to make the water flow.
In this embodiment, when the old water meter is replaced with a new water meter, the length of the water meter installation place installed on the ground is kept constant, and there is no pipe displacement, and the water meter is reinstalled. Can be easily performed. The connecting pipe can also be used as a support base material when being fixed to a structure such as a pipe shaft or other piping in the pipe space.
[0011]
Next, a method for removing the water meter from the connection device will be described in detail with reference to FIG.
FIG. 5 shows a state in which the water meter is mounted on the connection device. As shown in FIG. 5, the water meter 100 has packings 16 a and 16 b attached to a socket body 7 a that constitutes the connecting body portion 6 a that opposes and a sleeve 11 that is attached to the telescopic socket body 7 b that constitutes the connection body portion 6 b. And are screwed with cap nuts 9a and 9b. Next, the water meter 100 in such a mounted state is removed from the connection device. Loosen the cap nut 9b and remove one end of the water meter 100 on the downstream side. Next, the cap nut 9a is loosened, the sleeve 11 is pushed into the telescopic socket body 7b, the space between the connecting body portions 6a and 6b is expanded, and the water meter 100 is taken out. Taking out the water meter is performed in such a process, but when installing a new water meter, it is performed in the reverse process.
[0012]
Next, a second embodiment will be described with reference to FIG.
FIG. 6 is a front cross-sectional view of a water meter connection device according to a second embodiment of the present invention. The connecting device of the water meter according to this embodiment is characterized by the shape of the connecting body part, and at least one connecting body part is characterized in that the end part joined to the branch pipe is bent at a substantially right angle. There is. In this embodiment, the upstream side is bent, but in the present invention, either the upstream side or the downstream side may be used, and both sides can be bent. And the place made into the objective is to use the space effectively, when installing a water meter in the pipe shaft or pipe space provided in the housing complex. The metering device connection device shown in FIG. 6 is the metering device connection device shown in FIG. 1, and the connecting body portion in which the upstream connecting body portion is joined to the branch pipe and bent at a substantially right angle. It has a replaced structure.
[0013]
As shown in FIG. 6, the connection device for the water meter is composed of a pair of connection portions. The connection portions 1a ′ and 1b are connected to the connecting portions 5a and 5b and the connecting portions 5a and 5b. It is comprised from a pair of connection body part 26a, 6b. The connection body parts 26a and 6b have a water pipe connection part and a water meter connection part, respectively. The upstream connecting body portion 26 a includes an elbow 27 continuously connected to the connecting portion 5 a, a cap nut 29 attached to one end of the elbow 27, and a ring fitted to a joint portion between the elbow 27 and the cap nut 29. 28. The other end of the elbow 27 is bent at a substantially right angle. At the other end, a socket 22 is installed via a packing 23 and is fixed by screwing with a cap nut 21. The connecting portion 6b on the downstream side includes an expandable socket body 7b that is continuously connected to the connecting portion 5b, a sleeve 11 that is fitted to one end of the expandable socket body 7b via a packing 13, and the expandable socket body 7b and the sleeve 11 And a cap nut 9b attached to the other end of the sleeve 11, and a ring 8b fitted to the joint between the sleeve 11 and the cap nut 9b. The sleeve 11 fitted to the telescopic socket main body 7b is configured to move inside and outside the main body so as to freely advance and retract. The pair of connecting portions 5a and 5b have fitting holes facing each other, and the end of the connecting pipe 4 is fitted into each of them. The connecting pipe 4 keeps the distance between the pair of connecting body portions 26a, 6b constant.
[0014]
A pair of connecting portions connected by the connecting pipe 4 is joined to a water meter at one end facing the pair of connecting body portions 26a, 6b (that is, one end to which the cap nuts 29, 9b are attached), A branch pipe branched from the water pipe is joined to each other end.
In this embodiment, when the old water meter is replaced with a new water meter, the length of the water meter installation place installed on the ground is kept constant, and the water meter is reinstalled without causing pipe displacement. It can be done easily. The connecting pipe can also be used as a support base material when being fixed to a structure such as a pipe shaft or other piping in the pipe space. Moreover, since the other end to which the branch pipe of the connecting body portion 26a is connected is bent at a substantially right angle, a horizontal portion (existing in the pipe shown in FIG. 4) for connecting the branch pipe to the connecting body section is provided. It becomes unnecessary and space can be used effectively.
[0015]
Next, a third embodiment will be described with reference to FIG.
FIG. 7 is a front cross-sectional view of a connecting device for a water meter according to a third embodiment of the present invention.
The connecting device of the water meter according to this embodiment is characterized in that a check valve is attached to the connecting body portion, and the check valve is attached to the downstream connecting body portion. In FIG. 7, the structure of the pair of connecting body portions 6a and 6b, the connecting portions 5a and 5b, and the connecting pipe 4 is the same as that in FIG. In this embodiment, a check valve is attached to the connecting body portion 6b. The connection body parts 6a and 6b have a water pipe connection part and a water meter connection part, respectively.
The check valve is provided with a check valve unit 32 in the sleeve 11 of the connecting portion 6b. As a result, the check valve is opened by water pressure if tap water flows downstream, and closed by negative pressure on the upstream side and the pressure of the enclosed spring if tap water flows to the upstream side. It becomes.
In this embodiment, when the old water meter is replaced with a new water meter, the length of the water meter installation place installed on the ground is kept constant, and the water meter is reinstalled without causing pipe displacement. It can be done easily. The connecting pipe can also be used as a support base material when being fixed to a structure such as a pipe shaft or other piping in the pipe space.
[0016]
In the present invention, this check valve can be applied to the connection device for either water meter of the first embodiment or the second embodiment.
The present invention is not limited to the above-described embodiments, and the configuration, shape, material, quantity, etc. of details may be changed, added, deleted, etc. as appropriate without departing from the spirit of the present invention. it can.
[0017]
【The invention's effect】
According to the present invention, the length (span) of the installation place of the water meter installed on the ground can be kept constant by the above configuration, and piping displacement does not occur at the time of re-installation. Installation can be performed easily. The connecting pipe can also be used as a support base material when being fixed to a structure such as a pipe shaft or other piping in the pipe space.
[Brief description of the drawings]
FIG. 1 is a front cross-sectional view of a water meter connection device according to a first embodiment of the present invention.
FIG. 2 is a plan view of the connection device for the water meter shown in FIG. 1;
FIG. 3 is a front view of the connection device for the water meter shown in FIG. 1;
FIG. 4 is a front view showing a state in which the water meter connection device according to the first embodiment of the present invention is installed in a building.
FIG. 5 is a front cross-sectional view of a connection device for a water meter with the water meter shown in FIG. 1 attached thereto;
FIG. 6 is a front sectional view of a connecting device for a water meter according to a second embodiment of the present invention.
FIG. 7 is a front cross-sectional view of a water meter connection device according to a third embodiment of the present invention.
FIG. 8 is a front view showing a state in which a water meter is installed in a building by a conventional method.
[Explanation of symbols]
1a, 1a ', 1b ... connection part,
2a, 2b, 102, 202 ... branch pipes,
3, 103 ... water pipe, 4 ... connecting pipe,
5a, 5b ... connecting part, 6a, 6b, 26a ... connecting body part,
7a ... socket body, 7b ... telescopic socket body,
8a, 8b, 28 ... ring,
9a, 9b, 21, 29 ... cap nut, 10 ... building,
11 ... Sleeve, 12 ... Scraper,
14 ... fixing nut, 15, 115 ... stop cock,
16a, 16b, 13, 23 ... packing, 22 ... socket,
27 ... Elbow, 32 ... Check valve unit,
100 ... water meter, 101a, 101b ... connection piping,
104a, 104b ... support tool,
105a, 105b ... connecting nuts.

Claims (3)

A connecting pipe, and a pair of connecting portions provided on both sides of the connecting pipe, wherein the pair of connecting portions are formed integrally with the connecting portion to which the connecting pipe is attached and the connecting portion, respectively. The connection body part of the pair of connection parts has a water pipe connection part and a water meter connection part at both ends, and the water meter connection parts face each other. And the connecting pipe is used as a support base material that is fixed to a structure comprising a pipe shaft or other piping in the pipe space while keeping a constant distance between the pair of connecting portions. A watering device connection device.   The apparatus for connecting a metering device according to claim 1, wherein at least one of the water pipe connecting portions is bent.   The connecting device for a water meter according to claim 1 or 2, wherein a check valve is disposed inside one of the connecting body portions.

Images