JP2000329601A - Meter installing box - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a meter installing box in which a meter, e.g. a water flowmeter, a pressure gauge or a constant flowmeter, can be replaced without interrupting water supply. SOLUTION: The meter installing box comprises means 3 for coupling primary city water piping 60a with the tubular body part 7a on one side of a meter 7, and means 5 for coupling secondary city water piping 60b with the tubular body part 7b on the other side of the meter 7 wherein the coupling means 3, 5 are interconnected through a bypass pipe 50 so that city water can flow through any one of the meter 7 or the bypass pipe 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a meter installation device for detachably connecting a meter such as a water meter, a pressure gauge and a constant flow meter to various pipes such as a water pipe.

[0002]

2. Description of the Related Art Conventionally, this type of meter installation device has a base having a pair of holders as connection means for detachably connecting tube portions provided at both ends of the meter. It is grounded in a pit excavated on the ground or buried in the ground while connected to the pipe.

[0003] The meter installation device is removably attached to a base so that it can be replaced for regular inspection or the like after long-term use, or for replacement due to failure.

[0004]

The above-mentioned conventional meter installation device is installed for each house, for example, in an apartment house such as a public corporation. In such a case, the following problems occur when the meter is replaced.

That is, there is a problem that the water supply is cut off when replacing the meter. This is because it is necessary to bring the primary-side holder into a water-stop state of the primary-side water supply pipe in order to prevent water leakage from the holder by removing the meter. This allows the resident to change the meter during the meter change.
The water supply was not available, and the implementers had to notify the residents of the interruption of the water supply, imposing a burden on both sides.

In order to reduce the burden on the residents as much as possible, it is preferable to replace the meter during the morning, around noon, and afternoon when the water supply is frequently used. There is a problem that the time constraint on the side becomes large.

Therefore, the present invention has been made in view of the above-mentioned conventional problems, and is provided with a meter installation that can replace meters such as a water meter, a pressure gauge, and a constant flow meter without water interruption. It is an object to provide a vessel.

[0008]

The technical measures taken by the present invention to solve the above problems include a primary water supply pipe 60a.
And a connecting means 3 for connecting the pipe 7a on one side of the meter 7 and a connecting means 5 for connecting the secondary water supply pipe 60b to the pipe 7b on the other side of the meter 7. The installation device is characterized in that a bypass pipe 50 that connects the two connection means 3 and 5 is provided, and that the flow of tap water can be switched to either the meter 7 or the bypass pipe 50.

According to the meter installation device having the above configuration,
In a normal mode, the tap water flows in the order of the primary water pipe 60a, the connecting means 3, the meter 7, the connecting means 5, and the secondary water pipe 60b.
a, the connection means 3, the bypass pipe 50, the connection means 5, and the secondary water supply pipe 60b flow in this order when the meter 7 is replaced. In a normal mode, the meter measures the flow rate of tap water and can grasp the amount of tap water used.

Further, in the meter setting device according to the present invention, the bypass pipe 50 is connected to the connecting means 3, 3.
5 can adopt a detachable configuration. According to the meter installation device according to the second aspect having such a configuration, in a normal mode using the meter 7, the bypass pipe 50 is provided.
Can be detached and attached only when the meter 7 is replaced. Therefore, the bypass pipe 50
Can be shared without having to prepare the same number as the meter installation devices, and the cost can be reduced.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 to 4, 1 indicates a device main body of a meter installation device, and the device main body 1 has, on both sides,
A primary holder 3 and a secondary holder 5, which are holders as connection means to which the meter 7 is detachably attached, are provided. The primary holder 3 is arranged on the upstream side in the flow of tap water, and the secondary holder 5
Is located downstream in the distribution of tap water.

The apparatus main body 1 has a base 6 formed of a metal plate. The primary holder 3 and the secondary holder 5 are mounted on mounting bodies 12 and 40 provided at both ends of the base 6, respectively. It is attached detachably. Also,
A mounting portion 6a for mounting the meter 7 is formed at the center of the base 6. The mounting portion 6a is formed of a circular concave portion, and the lower portion 7c of the meter 7 is immersed.

The mounting members 12 and 40 are formed by bending a metal plate into a U-shape. The mounting members 12 and 40 are a pair of standing holding pieces, and are connected to both holding pieces and fixed to the upper surface of the base 6. Department. And on both holding pieces,
A notch is formed, and the primary holder 3 and the secondary holder 5 are detachably fitted in the notch.

The primary side holder 3 and the secondary side holder 5 are constituted by ball-type three-way valves so as to control tap water as a fluid. Hereinafter, the configuration will be described, but the same reference numerals are given to the common configuration of the primary holder 3 and the secondary holder 5.

Reference numeral 9 denotes a valve body in which a flow path 2 is formed in the pipe axis direction. The valve body 9 has a body 9a in which a valve chamber 10 is formed in the flow path 2 and a screw at one end of the body 9a. And a ball presser portion 9b screwed into the portion via an O-ring 11. A water supply pipe 60 (primary water supply pipe 60a, secondary water supply pipe 60b) is provided on the outer peripheral surface of the end of the body 9a. Is formed.

Reference numeral 17 denotes a pair of ball seats mounted on the inner peripheral surface on the other end side of the body portion 9a and the ball presser 9b, and a tapered surface whose diameter increases toward the end portion is formed on the inner peripheral surface inside the pair.
It is made of a synthetic resin or the like.

Reference numeral 19 denotes a substantially spherical ball rotatably interposed between the ball seats 17. The cylindrical through hole 1 is provided so as to open and close the flow paths 2 and 2 located at both ends of the ball 19.
9a is drilled.

The ball 19 has a through hole 19a.
And a communication groove 19b which is not connected to the through-hole 19a and extends across the inner diameter side and the outer diameter side of the ball seat 17.

Reference numeral 20 denotes a handle for rotating the ball 19, which is connected so as to be orthogonal to the through hole 19a of the ball 19, so that the handle 20 can be rotated with respect to the valve body 9. Thereby, the ball 19 can be rotated so that the through hole 19a rotates in the horizontal direction.

Also, as shown in FIG.
The ball holding portion 9b of the valve body 9 is provided with a connection port 22 connected to the tube portion 7a on the primary side of the meter 7. The connection port portion 22 has a configuration in which a connection tube 24 is fitted to an annular protrusion 23 protruding from the ball holding portion 9b so as to be able to retreat.

A flange 26 is formed at one end (primary side) of the connecting tube 24. The flange 26 is externally fitted with a seal 25. The flange 26 is screwed to the annular projection 23. The nut 27 prevents it from coming off. In addition, the connecting pipe 24
The other end (secondary side) is provided with a nut 28 rotatably fitted to the connection tube 24.

At one end (primary side) of the nut 28, a stopper portion 30 is formed which protrudes in the inner diameter direction. The stopper portion 30 is formed at an engagement portion 31 formed at the other end of the connecting tube 24. , The nut 28 is prevented from coming off. By screwing the screw portion 28a of the nut 28 with the screw portion 14 of the primary tube portion 7a of the meter 7, the primary tube portion 7a of the meter 7 and the primary holder 3 are connected. You.

On the other hand, as shown in FIG.
The ball holding portion 9b of the valve body 9 is provided with a connection port portion 22 connected to the tube portion 7b on the secondary side of the meter 7. The connection port 22 has a configuration in which a nut 28 is rotatably fitted to an annular projection 23 projecting from the ball holding section 9b.

That is, at one end (secondary side) of the nut 28, a stopper portion 30 projecting in the inner diameter direction is formed.
The stopper portion 30 is a tip portion (primary side) of the annular protrusion 23.
The nut 28 is prevented from coming off by engaging with the engaging portion 31 formed at. Then, by screwing the screw portion 28a of the nut 28 to the screw portion 14 of the secondary tube portion 7b of the meter 7, the secondary tube portion 7b of the meter 7 and the secondary holder 5 Is connected.

Reference numeral 32 denotes a check valve having a valve element 32a which allows only the flow in the water flow direction (from the primary water supply pipe 60a to the secondary water supply pipe 60b) in the flow path 2; It is fitted inside.

As shown in FIGS. 2 to 4, a bypass pipe 50 is provided in the body 9 a of the valve body 9 of each of the primary holder 3 and the secondary holder 5 in a direction orthogonal to the flow path 2. A sub connection port 33 to be connected is provided. The sub connection port 33 is an annular connection port in which a through hole 33a communicating with the valve chamber 10 is formed.

On the other hand, the bypass pipe 50 is made of a bendable resin hose.
3 is provided with couplers 51, 51 which can be inserted and removed. The length of the bypass pipe 50 is determined by the couplers 51 and 5 at both ends.
1 is set so that it can be inserted into the respective sub-connection ports 33 of the primary holder 3 and the secondary holder 5.

The meter installation device according to the present embodiment has the above-described configuration. Next, a method of mounting the meter will be described. In order to attach the primary holder 3 and the secondary holder 5 to the attachment bodies 12 and 40 of the base 6 fixed in pits (storage recesses) provided on the ground, respectively, the central portion (the ball 19) of the valve body 9 is mounted. The valve body 9 is engaged from above in the cutouts of both holding pieces so that the part with the inside of the holding piece is located between the holding pieces. In this way, the primary holder 3 and the secondary holder 5 can be easily and quickly engaged with the attachments 12 and 40 from above.

Further, the nut 28 of the primary holder 3
And the nut 28 of the secondary holder 5 are moved in a direction away from each other, and the meter 7 is mounted on the mounting portion 6 a of the base 6. At this time, the center positions of the tube portions 7a and 7b of the meter 7 and the center positions of the nuts 28 and 28 of the primary holder 3 and the secondary holder 5 match.

Therefore, by rotating the nuts 28 of the primary holder 3 and the secondary holder 5, the nuts 28 are respectively screwed to the respective screw portions 14 of the meter 7.
Can be screwed together. Since each nut 28 is movable in the axial direction, it can be easily screwed and connected to the screw portion 14.

After mounting the meter, a method of using the meter installation device according to the present embodiment will be described. FIG.
FIG. 4 is a view showing a flow mode of a fluid in a primary side holder 3. First, the handle 20 is rotated to a predetermined position, and the upstream flow path 2a, the downstream flow path 2b, and the through hole 19a of the ball 19 are substantially in the same direction as shown in FIG. Thus, a valve open state in which the flow paths 2a and 2b and the through hole 19a communicate with each other is obtained.

Then, the tap water in the primary side water supply pipe 60a can flow into the meter 7 through the through hole 19a of the ball 19. Although not shown, if the secondary holder 5 is also configured in the same manner, the primary water pipe 60
a through the meter 7 and the secondary water pipe 60b
Flows into. Usually, this mode is adopted, and the amount of water used can be measured by the meter 7 and grasped.

Further, since the valve chamber 10 of the primary holder 3 is shut off by the ball seat 17 and the ball 19, the tap water in the primary water pipe 60a passes through the valve chamber 10 to form the sub-connection port 33. It does not flow into the through hole 33a, and there is no need to worry about water leakage from the sub connection port 33 even when the bypass pipe 50 is removed.

Next, when the meter is replaced without water interruption (from the primary water supply pipe 60a to the secondary water supply pipe 6).
5b), the handle 20 is rotated 90 degrees from the state shown in FIG.
As shown in (b), the communication groove 19b of the ball 19 is made to face the primary water pipe 60a. Then, the communication groove 19
The state where the flow path 2a and the valve chamber 10 of the primary side holder 3 communicate with each other via b is obtained. Moreover, the tap water in the valve chamber 10 does not flow into the downstream flow path 2b due to the cutoff between the ball seat 17 and the ball 19.

Then, the tap water in the primary side water pipe 60a reaches the valve chamber 10 through the communication groove 19b, and the valve chamber 10
Flows into the bypass pipe 50 through the through hole 33a of the sub connection port 33. Although not shown, the handle 20 of the secondary holder 5 is rotated so that the communication groove 19b of the ball 19 is opposed to the secondary water pipe 60b. Tap water flows through the bypass pipe 50 into the secondary water supply pipe 60b. Therefore, the meter 7 does not operate, and the water is not cut off.

Next, when replacing the meter with water cutoff, the handle 20 is moved from the state shown in FIG.
By rotating it by 0 degrees, as shown in FIG.
The communication groove 19b is opposed to the meter 7 side. Then
Since the primary-side ball seat 17 is completely closed by the outer peripheral surface of the ball 19, a valve-closed state in which the flow path 2a and the through hole 19a of the ball 19 are not communicated is obtained.

Then, the tap water in the primary side water pipe 60a does not flow into either the meter 7 or the bypass pipe 50.

Next, when replacing the meter 7, the nuts 28, 28 are first loosened, and the nut 2 is
The meter 7 is removed by separating 8, 28. At this time, since the meter 7 can be mounted on the base 6, the meter 7 can be easily removed.

In this case, the check valve 32 inserted into the secondary holder 5 prevents water leakage from the secondary holder 5 due to backflow of water in the secondary water pipe 60b. Also, by rotating the handle 20 of the secondary holder 5,
If the communication groove 19b of the ball 19 is opposed to the meter 7 side, the secondary ball seat 17 is completely closed by the outer peripheral surface of the ball 19, and the tap water in the secondary water pipe 60b is Is blocked by the ball 19, so that the check valve 32 is replaced and checked.
Even if 2 is removed, there is no fear of water leakage from the secondary holder 5.

The present invention is not limited to the above embodiment, and various design changes can be made without departing from the gist of the present invention. That is, the shape and the like of the holders 3 and 5 are not limited, and the types of the bypass pipe 50 and the coupler 51 are not limited. The bypass pipe 50 is not provided with the coupler 51, but may be one in which a resin hose is directly inserted into the sub connection ports 33 of the holders 3 and 5.

The valve body 9 and the handle 20 are each provided with an uneven portion which can be engaged with each other, and the uneven portion allows the handle 20 to be opened to the meter 7 and to be opened to the bypass pipe 50. , And the valve closed state, the flow of tap water can be reliably switched to either the meter 7 side or the bypass pipe 50 side, or water can be stopped. In this case, the positioning means of the handle 20 may be another mechanism or configuration.

Furthermore, if the handle 20 is a burglar or key type anti-theft handle so that only the person who replaces the meter can operate the handle, unauthorized use of the water supply by residents can be suitably prevented.

[0043]

As described above, the meter installation device according to the present invention comprises a connecting means for connecting a primary water pipe to one side of the meter, and a secondary water pipe and the other side of the meter. Since a bypass pipe is provided for connecting two connection means of the connection means for connecting the pipe with the pipe body, the tap water is allowed to flow through the bypass pipe, so that the meter can be replaced without water interruption. In addition, for example, it is possible to alleviate the time restriction of the meter replacement work in an apartment house such as a public corporation.

Further, in the meter installation device according to the present invention, since the bypass pipe is detachable from the two connecting means, the bypass pipe can be detached during normal use of the meter, and the bypass pipe can be connected to the connecting means. The problem of spoilage of tap water remaining in the bypass pipe caused by the permanent installation cannot occur.

[Brief description of the drawings]

FIG. 1 is a front view showing a meter installation device according to an embodiment of the present invention, including a partial cross section in a state where a meter is mounted.

FIG. 2 is a plan view including a partial cross section of the embodiment.

FIG. 3 is a sectional front view of the primary side holder of the embodiment.

FIG. 4 is a sectional front view of the secondary holder according to the embodiment;

FIG. 5 is a cross-sectional front view of the primary side holder of the embodiment, wherein (a) is a water-permeable state, (b) is a water-permeable state to a bypass pipe, and (c) is a water-cut state.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Device main body, 2 ... Flow path, 3 ... Primary side holder (connection means), 5 ... Secondary side holder (connection means), 7 ... Meter,
7a: tubular portion, 7b: tubular portion, 17: ball seat, 1
9: ball, 20: handle, 33: sub connection port, 33
a: through hole, 50: bypass pipe, 51: coupler, 60
... water supply pipe, 60a ... primary side water supply pipe, 60b ... secondary side water supply pipe

Claims (2)

[Claims] 1. A connecting means (3) for connecting a primary water supply pipe (60a) to a pipe part (7a) on one side of a meter (7), and a secondary water supply pipe (60b) and a meter (7). In the meter installation device provided with the connecting means (5) for connecting the other side of the pipe body (7b) of (7), a bypass pipe (50) connecting the two connecting means (3) and (5) is provided. A meter installation device provided so that the flow of tap water can be switched to either a meter (7) or a bypass pipe (50). 2. The meter installation device according to claim 1, wherein the bypass pipe (50) is detachable from the connection means (3), (5).