JPH1193226A - Meter unit for city water - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a meter unit which can easily attach and exchange a meter in a narrow installation spot, and can simply correspond to the meter different in the diameter of thread, and is easy in the maintenance of a check valve, and can dispense with adjusting work for the mutual alignment of valves. SOLUTION: A stop cock 5 and a check valve 7 are attached onto a base 11, and a meter 3 is pressed against the check valve 7 by an attaching-detaching device 9 attached to the stop cock 5 and detachably attached. A slide holder to receive the threaded parts 13, 15 of the meter 3 and a thread receiving member are detachable. The stop cock 5 and the check valve 7 are positioned on the base 11 through a bush and attached.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water meter unit, that is, an apparatus in which a water meter and valve units arranged on both sides thereof are unitized. More particularly, it relates to a water meter unit that is particularly suitable for installation in tightly confined installation locations, for example, in a pipe shaft of an apartment house.

[0002]

2. Description of the Related Art In the case of an apartment house, for example, a storage space called a pipe shaft for installing a water meter or a gas meter for one or more houses is provided on a side wall of a landing on a staircase. .

Conventionally, when a water meter and a water stopcock, a check valve, etc. installed on both sides of such a narrow storage space are installed, the pipes on the primary side and the secondary side installed in advance have to be installed. All of these devices are connected in combination while aligning them on site. If there is any misalignment in this piping, fastening of the cap nut to connect the piping to the device or the devices Is not easy. This applies not only to new installation of the meter, but also to meter replacement performed every few years. In addition, since the operation is performed in a narrow space, the old pipe may be broken during the operation, particularly when the meter is replaced.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has been made into a unit by using a base and a device, for example, a valve device installed on both sides of the meter, so that the device is manufactured. This eliminates the need for centering work when installing the meter, facilitating meter installation work.When replacing the meter, remove the meter only from this unit while keeping the unit itself attached to the piping, without touching the piping at all. To be able to replace the meter,
It is intended to provide a water meter unit.

[0005] In addition, a plurality of types of water meters with different diameters of connecting screw portions on both sides are used.
It is also an object of the present invention to provide a water meter unit that can cope with such a plurality of meters having different screw diameters only by performing a simple operation.

[0006]

In order to solve the above-mentioned problems, according to the present invention, there is provided an elongated base, and upstream and downstream valve devices fixed to the base at both ends of the base. A meter disposed between the upstream and downstream valve devices, and a meter disposed between one of the upstream and downstream valve devices and the meter, and connecting the meter to the upstream and downstream valve devices. A meter unit is configured with a detachable device that is detachably connected and supported, and the detachable device is configured to abut one end of a connecting screw portion of the meter and press the meter toward the other valve. A slidable slide member is provided.

In a more specific embodiment, the upstream and downstream valves are a stopcock device and a check valve device, respectively, and the attachment / detachment device is disposed between the stopcock device and the meter. You.

In a more specific embodiment, the attaching / detaching device includes a rotating member, a sliding member, and a sliding guide rotatably attached to the water stopcock device, and the rotating member has a stop at one end. The slide member is rotatably connected to the secondary connection portion of the faucet device, the slide member is screwed and attached to the rotation member, and the other end side can be brought into contact with the end of the primary screw portion of the meter. The slide guide prevents rotation of the slide member and guides the slide member to perform an axial sliding motion.

In a more specific embodiment, the attachment / detachment device and the check valve device surround and support at least a part of the outer peripheral portion of the primary screw portion and the secondary screw portion of the meter, respectively. And a screw receiving member, and each screw receiving member is detachably attached to the attaching / detaching device and the check valve device.

In a more specific embodiment, the check valve device comprises a main body having a through hole, which constitutes a check valve case, and a check valve inserted into one end of the through hole of the main body. The cartridge comprises a non-closed housing, a valve seat member attached to one end opening of the housing, a valve element housed in the housing, and the valve element as a valve seat member. A spring biased toward the valve, a screw attached to the valve seat member and screwed with a screw formed at one end of the through hole of the main body, and a flange abutting on one end of the main body. And

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, specific embodiments of the present invention will be described with reference to the drawings, but the scope of the present invention is not limited to the embodiments described below.

FIG. 1 is a front view of a water meter unit (hereinafter simply referred to as a meter unit) according to a first embodiment of the present invention. In the figure, the meter unit 1
Is a ball stopcock using a meter 3 and a ball valve connected to the upstream side of the meter (hereinafter simply referred to as a stopcock).
5, a check valve connected to the downstream side. The stopcock 5 and the check valve 7 are respectively connected to upstream and downstream pipes (not shown). Reference numeral 9 denotes a detachable device for detachably attaching the meter 3 to the meter unit 1. Reference numeral 11 denotes a base, on which a water stopcock 5, a check valve 7, and an attachment / detachment device 9 are attached. The meter 3 is connected to the screw portions 13 at both ends by the attachment / detachment device 9 and the check valve 7. , 14 are supported. The base 11 is attached to the floor surface or the side wall of the pipe shaft at both ends using anchor bolts or the like.

FIG. 2 is an enlarged sectional view showing details of the water stopcock 5 and the attaching / detaching device 9 used in the meter unit 1 shown in FIG. The water stopcock 5 is a straight ball water stopcock. A ball 23 having a straight flow path 25 formed in a main body 21 is operated by a handle 27 to communicate between a primary side and a secondary side. To open and close. A pipe (not shown) is connected to the primary connection part 29 and the secondary connection part 3
An attachment / detachment device 9 described later is connected to 1.

A boss 33 is formed below the main body 21 of the water stopcock 5. On the lower surface side of the boss 33, two screw holes 35 are formed side by side in the direction connecting the centers of the connection portions 29 and 31 on the primary side and the secondary side. A counterbore is formed on the entrance side of the screw hole 35 to form a positioning hole 37 having a large diameter. The base 11 also has a positioning hole 39 corresponding to the screw hole 35. A positioning bush 41 is inserted into the positioning holes 37 and 39 in a fitted state, and accurately determines the position of the water stopcock 5 with respect to the base 11. Then, the water stopcock 5 is fixed to the base 11 by bolts 43.

The attachment / detachment device 9 includes the secondary connection portion 3 of the water stopcock 5.
1 is provided with a lock nut 45 as a rotating member rotatably connected to the lock nut 45. The lock nut 45 is hollow, is formed in the middle of the internal hole, extends inward, and has an inner flange 47 fitted to the distal end of the secondary side connection portion 31 of the water stopcock 5, An outer flange 32 formed on the secondary-side connecting portion 31 of the water stopcock 5 with a mounting ring 49 received in a groove 48 formed on the inner peripheral side at a position close to the primary side.
, The movement in the axial direction is restricted. Lock nut 4
5 can be rotated with respect to the water stopcock main body 21 using a plurality of knobs 51 provided on the outer peripheral side.

Reference numeral 55 denotes a slide holder as a sliding member. The slide holder 55 is also a hollow member, and includes three portions having different outer diameters. The first portion 57 having the smallest outer diameter is slidably inserted into the secondary connection portion 31 of the water stopcock main body 21. Reference numeral 58 denotes an O-ring that seals between them. Next, the second portion 59 having the larger outer diameter is provided with a male screw 61 in a part thereof, which is screwed with the female screw 46 formed on the inner flange 47 of the lock nut 45 on the side opposite to the inner peripheral groove 48. doing. The third portion 63 having the largest outer diameter is a portion fitted and guided by a slide guide 71 described later. The third portion 63 has a substantially annular shape. A primary screw receiving portion 67 for receiving the primary screw portion 13 of the meter 7 is provided at the distal end side of the third portion. The screw receiving portion 67 has a semicircular shape of only a lower half. The inside diameter corresponds to the outside diameter of the primary screw portion 13 of the meter 7. The third portion 63 and the screw receiving portion 67 are cut flat at their lower portions to form a sliding contact portion 65. Further, a meter 7 is provided on the end face of the third portion 63.
Counterbore 6 having a diameter corresponding to the outer diameter of the primary screw portion 13
8 are formed, and the end of the primary screw portion 13 is fitted. Further, a groove 64 is formed so as to surround the hole 60, in which an O-ring 69 is received, and a meter 7 is provided.
Between the end face of the primary screw portion 13 and the primary screw portion 13.

Reference numeral 71 denotes a slide guide. The slide guide 71 has an annular surface 73 that fits into the third portion of the slide holder 71, and a flat upper surface that receives and guides the third portion and the sliding contact portion 65 formed on the screw receiving portion 67. And a guide unit 75. Slide guide 71
Are fixed to the base 11 with bolts 77 at the left and right positions (in the direction perpendicular to the plane of FIG. 2) of the guide portion 75.

In the attaching / detaching device constructed as described above, by rotating the lock nut 45, the slide holder 55 is guided by the slide guide 71 to move forward and backward. If the female screw 46 of the lock nut 45 and the male screw 61 of the slide holder 55 are disengaged from each other, the slide holder 55 can be removed.

FIG. 3 is an enlarged sectional view showing details of the check valve 7 used in the meter unit 1 shown in FIG.
The check valve 7 includes a main body 81 and a check cartridge 83 inserted into the main body 81.

Non-return cartridges that are used by being inserted in the middle of a water pipe are well known, and are described in, for example, JP-A-59-37.
375, Japanese Utility Model Publication No. 3-14607 and the like.
The basic configuration of the check cartridge 83 used in this embodiment may be the same as that described in Japanese Utility Model Publication No. 3-14607. That is, the check cartridge 83 is
4, a plurality of arms 85 extending radially from the hub 84, a bottom annular portion 86 to which outer ends of the arms 85 are connected, a plurality of ribs 87 extending from the bottom annular portion 86 in a direction perpendicular to the arms 85, a rib 87 A non-closed housing 89 comprising a valve seat annular portion 88 to which the tip of the valve seat is connected, a valve seat member 90 attached to the valve seat annular portion 88, and a housing 89 slidably housed in the housing 89, and the valve And a valve body 91 biased toward the seat member 90. The valve seat member 90 is formed by integrally covering a metal ring 118 with a covering body 131 made of rubber, and forms a valve seat 133 on the inner side of the metal ring 118 and a seal portion 117 on the outer side. ing.

The check cartridge 83 used in the present embodiment further includes a mounting ring 92 for mounting the cartridge 83 to the main body 81. The mounting ring 92 includes an annular portion 93 having a central hole, and an annular portion 93.
And a cylindrical portion 94 extending from the outer periphery of the valve seat member 90,
On the opposite side of the cylindrical portion 94, a flange 95 is provided which extends outward from the annular portion 93. The tubular portion 94 fits snugly around the outer periphery of the valve seat member 90 and is integrated and can be removed, but can be handled integrally during assembly.
External threads 96 are provided on the outer periphery from the cylindrical portion 94 to the annular portion 93.
Is engraved. In addition, a shallow counterbore 97 having a diameter corresponding to the outer diameter of the secondary screw portion 15 of the meter 7 is formed on a side surface of the annular portion 93 opposite to the cylindrical portion 94, and a bottom surface thereof is formed.
A groove is formed around the center hole of the annular portion, and an O-ring 9 is formed there.
8 have been received. The tip of the secondary thread 15 of the meter 7 is inserted into the counterbore 97 portion, compresses the O-ring 98, and seals the gap between the secondary thread 15 of the meter and the mounting ring 92.

The check valve body 81 has a through hole 101,
The secondary side connection portion 103 is connected to a secondary side pipe. A boss 105 is provided at the lower part, similarly to the stopcock 5.
Are provided, and two screw holes 107 are provided side by side in the axial direction of the through hole 101 from the bottom surface side. Screw hole 10
7 is counterboreed with an enlarged diameter on the inlet side, and positioning holes 109 are formed.
Correspondingly, a positioning hole 111 is also formed in the base 11, and a bush 113 is inserted into the positioning holes 109 and 111 in a fitted state, and the check valve 7 is accurately positioned with respect to the base 11. Position. And bolt 11
5 fixed. The positioning holes 39 and 111 of the base 11 are arranged in a straight line, so that the water stopcock 5 attached to the base 11 and the core of the check valve are automatically aligned.

The check cartridge 83 is inserted into a hole of the main body 81,
The external thread 96 of the mounting ring 92 is connected to the internal thread 10 of the main body 81.
2 and screwed into the mounting ring 92 so that the sealing portion 117 made of an elastic material such as rubber of the valve seat member 90 is attached.
The inner surface of the annular portion 93, the inner peripheral surface of the cylindrical portion 94, and the metal ring 118 of the valve seat member 90 are compressed to seal this portion. At that time, the bottom annular portion 86 of the housing 89 comes into contact with the step portion 104 provided in the middle of the through hole 101 of the main body 81. Also, the flange 95 of the mounting ring 92
The amount of insertion of the cartridge 83 is regulated by contacting the end surface of the main body 81. Reference numeral 119 denotes an O-ring that seals between the main body 81 and the mounting ring 92. In the conventional non-return cartridge without the mounting ring 92, the non-return cartridge is positioned and inserted into the main body or the case, a socket or the like is attached, and the seal portion is pressed and sealed by the end face of the socket. ing. Therefore,
Most parts of the cartridge are housed in the main body, and only a small amount of compression of the seal portion comes out of the main body. Therefore, even if the socket is removed for maintenance of the check valve, it is not easy to remove the check cartridge. However, since the cartridge used in the present embodiment has a mounting ring and is mounted by screwing the mounting ring to the main body, the cartridge can be easily removed and maintenance of the check valve can be easily performed.

Mounting ring 92 for check cartridge 83
In addition, a screw receiving member 121 for receiving the secondary screw portion 15 of the meter 3 is detachably attached. The screw receiving member 121 in the present embodiment is made of plastic, and has a central hole 1 having a diameter corresponding to the diameter of the secondary screw portion 15 of the meter 3.
A disk portion 123 provided with 24, and extending from the disk portion 123,
A cylindrical portion 125 fitted to the flange 95 of the mounting ring 92; The cylindrical portion 125 is provided with a plurality of splits in the circumferential direction so as to be easily attached, and the distal end of the cylindrical portion 125 has a protrusion 12 slightly projecting radially inward.
6 is formed, and the screw receiving member 121 is attached to the mounting ring 92.
When it is mounted on the mounting ring 92, the screw receiving member 121 is not caught by the flange 95 of the mounting ring 92, and does not fall off the mounting ring 92. Screw receiving member 1
21 is rotatable with respect to the mounting ring 92. Of course, the mounting ring can also be made of metal.

Reference numeral 127 denotes a secondary screw 15 of the meter 3.
It is a screw receiving part for receiving. Screw receiving part 12
7 is a semicircle having only a lower half, and the inner diameter thereof is
Corresponds to the outer diameter of the secondary screw portion, the inner peripheral surface of which
It forms the same plane as the inner peripheral surface of the central hole 124 of the disk part 123.

Meter unit 1 configured as described above
First, the water stopcock 5, the attachment / detachment device 9, and the check valve 7 are attached to the base 11. In this state, the core of the water stopcock 5, the attachment / detachment device 9, and the check valve 7 are aligned, and it is not necessary to perform the alignment again. The lock nut 45 of the attachment / detachment device is rotated in one direction, and the slide holder 55 is retracted. In this state, the primary screw portion 13 and the secondary screw portion 1 of the meter 3 are
4 are placed on the screw receiving portion 67 of the slide holder 55 and the screw receiving portion 127 of the screw receiving member 121, respectively. The lock nut 45 is rotated to the side opposite to the end, and the meter 3 is pressed toward the check valve 7. Thereby, the O-ring 69
And 98 are compressed, the meter 3 and the attachment / detachment device 9, the check valve 7
Is sealed at the connection portion. A lock bolt (not shown) can be provided to prevent the lock nut 45 from loosening. The replacement of the meter 3 can be performed simply by loosening the lock nut 45.

The distance H between the meter 3 and the base 11 is such that the meter 3 can be rotated by 90 degrees around the screw portions 13 and 15 from the state shown in FIG. In other words, the meter 3 is generally used by being installed in a horizontal state. If the meter 3 is used at an angle, there arises a problem that the operation itself becomes abnormal. Depending on the paop shaft,
The meter unit cannot be installed on the floor surface, and the base 11 may be attached to the wall surface. In such a case,
If the meter 3 is rotated by 90 degrees from the state shown in FIG.
The meter 3 can be used in a horizontal state.

By the way, as for the meter 3, a plurality of types of connecting screw portions having different screw diameters are used.
It is a reality that a plurality of types of meters having different screw diameters are used by the same water utility. However, the screw receiving member of the meter unit according to the present invention, that is, the slide holder 55 of the attaching / detaching device 9, the screw receiving member 121, and (the mounting ring 92 of) the non-return cartridge 83 can be removed as described above. Accordingly, if the slide holder 55, the screw receiving member 121, and the mounting ring 92 are prepared so that the dimensions of the receiving portions correspond to the screw diameters of the respective meters, it is possible to cope with meters having different screw diameters only by replacing them. You can do it.

FIG. 4 is an enlarged sectional view showing details of the water stopcock 201 and the attaching / detaching device 9 used in the second embodiment.
The attachment / detachment device 9 is the same as that used in the first embodiment. The water stopcock 201 in this embodiment is an angle-type ball water stopcock, and a flow path 203 formed in a ball 202 to be used is bent at a right angle in the shape of a hook as shown in FIG. The connecting portion 204 is provided facing upward. Then, a spindle (not shown) provided to extend in a direction perpendicular to the paper surface of FIG. 4 is connected to the ball 202. In this embodiment, the spindle is the ball 2
Two are mounted on the left and right sides (perpendicular to the plane of the paper) of the camera 02. A handle is attached to one of the two if necessary. Thereby, it is possible to cope with any case where the pipes on the primary side and the secondary side in the pipe shaft are reversed.

FIG. 5 is an enlarged sectional view showing details of a check valve 301 used in the third embodiment. The check cartridge 83 used for this check valve is the same as that used in the first embodiment. And this check valve 301
The main body 302 is an angle type main body in which an internal flow path is bent like a hook, and the secondary side connection part 303 is bent 90 degrees with respect to the primary side connection part 304 and faces upward. . Of course, it is also possible to use a type in which the secondary connecting portion is bent in a direction perpendicular to the paper surface.

[0031]

As described above, according to the present invention,
Conventionally, since a water stopcock, a check valve, a meter, and the like, which are respectively connected to the pipes at the site, are provided as a unit, it is extremely easy to install in a narrow place such as a pipe shaft. Also, since the meter can be easily removed with a detachable device,
Installation and replacement can be done with simple work, and there is no fear of damaging the piping.

Since the screw receiving members for receiving the screw portions on both sides of the meter can be removed from the unit, it is possible to mount meters having different screw diameters only by replacing them. Since the check cartridge is removable, maintenance of the check valve can be easily performed. further,
Since the stopcock and check valve are mounted on the base using bushes that are arranged in a straight line on the base, there is no need to adjust the stopcock and check valve during assembly. And the installation of the meter becomes easy.

[Brief description of the drawings]

FIG. 1 is a front view of a meter unit according to a first embodiment of the present invention.

FIG. 2 is an enlarged sectional view of a water stopcock and a detachable device according to the first embodiment.

FIG. 3 is an enlarged sectional view of the check valve according to the first embodiment.

FIG. 4 is an enlarged sectional view of a water stopcock and a detachable device according to a second embodiment.

FIG. 5 is an enlarged sectional view of a check valve according to a third embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Meter unit 3 Meter 5 Ball valve type water stopcock 7 Check valve 9 Detachment device 11 Base 45 Lock nut (Rotating member) 55 Slide holder (Slide member) 67 Screw receiving part 71 Slide guide 81 Check valve body 83 Check Cartridge 121 Screw receiving member

Claims (6)

[Claims] 1. An elongated base, upstream and downstream valve devices fixed to the base at both ends of the base, and a meter disposed between the upstream and downstream valve devices. And an attachment / detachment device which is disposed between any one of the upstream and downstream valve devices and the meter, and which detachably connects and supports the meter to / from the upstream and downstream valve devices. The detachable device includes a slidable slide member that can abut against one end of the connection screw portion of the meter and press the meter toward the other valve. And a water meter unit. 2. The water meter unit according to claim 1, wherein the upstream side valve and the downstream side valve are a stopcock device and a check valve device, respectively, and the attaching / detaching device includes the stopcock and the meter. A water meter unit, which is disposed between the water meter units. 3. The water meter unit according to claim 2, wherein the attachment / detachment device includes a rotation member rotatably attached to the water stopcock device with respect to the water stopcock device; Communicates with the secondary connection of the stopcock device,
A slide member which is screwed and attached to the rotating member, and which is capable of abutting on the other end of the primary screw portion of the meter at the other end side; A water meter unit, comprising: a slide guide for guiding an exercise. 4. The water meter unit according to claim 2, wherein the attachment / detachment device and the check valve device are:
Of the primary screw part and the secondary screw part of the meter,
A screw receiving member that surrounds and supports at least a part of the outer peripheral portion thereof is provided, and each screw receiving member is detachably attached to the attaching / detaching device and the check valve device. Meter unit for water supply. 5. The water meter unit according to claim 2, wherein the check valve device includes a main body having a through hole, which constitutes a check valve case, and a main body having a through hole. A check cartridge inserted into one end of the through hole, wherein the check cartridge is a non-closed housing, a valve seat member attached to an opening at one end of the housing, and A valve body, a spring for urging the valve body toward the valve seat member, and a mounting member for mounting the check cartridge to the main body, wherein the mounting member includes the valve seat member. A screw portion fitted and attached to an outer peripheral portion of the main body, and screwed with a screw portion formed at the one end side of the through hole of the main body; and a flange abutting on one end side end of the main body. Water meter unit. 6. The water meter unit according to claim 2, wherein a bush for positioning the water stopcock and the check valve with respect to the base is provided on the base. A water meter unit, which is provided in a straight line, and has positioning holes into which the bush is fitted, respectively, at lower portions of the water stopcock and the check valve.