JP3043207U - Water supply meter support structure - Google Patents

Abstract

(57) 【Abstract】 PROBLEM TO BE SOLVED: To stably and reliably hold the screw outer diameter portions at both ends of a water supply meter, and to prevent troubles due to improper installation at the time of replacement due to variations in the outer diameter dimension of the screw outer diameter portion. (EN) Provided is a support structure for a water meter for solving the problem. For example, an adapter 1 is detachably fixed to one end of a gate valve side of a gate valve unit. The adapter 1 is provided with a tray portion 2 having an arc surface that partially covers and supports the outer diameter of the screw outer diameter portion at the end of the meter. The radius R of the arc surface of the tray 2 corresponds to the outer radius of the meter screw outer diameter portion, and the screw outer diameter portion is stably supported.
Further, the display mark 3 is provided on the adapter 1, so that the adapter 1 suitable for the screw outer diameter portion can be easily found.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a support structure for supporting both side ends of a water supply meter, and more particularly to a support structure for a water supply meter that is compatible with various meters having the same nominal diameter but different screw outer diameter portions.

[0002]

[Prior art]

 A meter for water supply is housed in the frame, and a flow path switching valve unit and a gate valve unit are connected to both ends of the frame. At the connecting portion, the meter has its screw outer diameter portion supported on the unit side and held in a state of being sandwiched between both units. FIG. 7 shows an outline of a conventional support structure for the screw outer diameter portion of the meter on the side of the gate valve unit.

In FIG. 7, an adapter portion 28 that supports the screw outer diameter portion 12 of the meter is integrally formed on the meter side of the valve box 27 in which the valve body 26 of the sluice valve is mounted. The pan 29 of the adapter portion 28 forms an arc surface matching the radius of the screw outer diameter portion 12, and the arc surface of the pan portion 29 supports the lower portion of the screw outer diameter portion 12. Further, the screw outer diameter portion 12 is pressed by the thrust surface 30 of the adapter portion 28 to be sandwiched.

The screw outer diameter portion 12 of the meter has an outer diameter determined according to the type of the meter, but there are several kinds of outer diameter dimensions even for the same model. For example, in the case of a meter having a nominal diameter of 25, there are several kinds of outer diameters in the range of 35 [mm] to 42 [mm].

[0005]

[Problems to be solved by the device]

 On the other hand, water meters are required to be replaced every eight years regardless of their breakdown. In addition, even if less than 8 years have passed, it may be necessary to replace it due to a failure or damage. In this case, even if the type and model of the meter are the same, since there are several types of outer diameters of the screw outer diameter portion as described above, there arises a problem that a replacement meter cannot be attached. In addition, even if it is attached, the outer diameter may be loose, the stability of holding may be lacking, and water leakage may occur. In the case of the prior art, as shown in FIG. 7, since the adapter portion 28 is integrally formed with the valve box 27 side, only the meter having the outer diameter portion 12 of the size suitable for the adapter portion 28 can be attached. There is. Further, even if a meter is attached, if there is play between the outer diameter portion of the screw and the tray portion 29 of the adapter, the stability of the support may be lost, and problems such as water leakage may occur. The reliability of water meters is particularly important, and the above problems are major problems.

The present invention solves the above problems, and when replacing the meter, it is possible to select an adapter of a size that matches the outer diameter portion of the thread of the meter, and improve the reliability of holding the meter. At the same time, it is an object of the present invention to provide a water supply meter support structure in which an adapter suitable for the outer diameter of the screw of the meter can be easily identified to prevent mistakes.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention relates to a water supply meter unit in which a meter for flow rate measurement and a flow path switching valve unit and a sluice valve unit arranged on both sides of the meter are housed in a frame. A support structure for holding both side ends of the meter, wherein the flow path switching valve unit and the sluice valve unit are formed with a pan portion having an arc surface matching the radius of the screw outer diameter portion at both side ends of the meter. The adapter constitutes a support structure for a water supply meter which is detachably fixed to the unit body side. Further, the adapter is provided with a display mark for displaying a size corresponding to the outer diameter portion of the screw of the meter, and the display mark is provided at a visible position.

The dimensions of the screw outer diameter portion at both ends of the meter are measured in advance, and an adapter having a pan portion that matches the outer diameter dimension is selected. The adapter is provided with a display mark for identification at a position where it can be seen, so it is easy to find a suitable product. Since this adapter can be attached to and detached from the unit body side, the meter can be held securely by attaching the selected adapter to each unit body before connecting with the meter.

[0009]

[Embodiment of the invention]

 Hereinafter, an embodiment of a support structure for a water supply meter of the present invention will be described in detail with reference to the drawings. First, the schematic structure of the meter unit will be described with reference to FIG. A meter 8, a flow path switching valve unit 9, a sluice valve unit 10, etc. are housed in the frame body 7. The clean water enters from the flow path switching valve unit 9 side and the flow rate is measured by the meter 8. It passes through the gate valve unit 10 and is supplied to the water outlet of each household. Screw outer diameter portions 11 and 12 having outer diameters corresponding to the type and size of the meter 8 are formed at both ends of the meter 8. The screw outer diameter portions 11 and 12 are supported by adapters 4 and 1, which will be described later, and are clamped and fixed between the adapters 4 and 1. In this example, the support structure around the adapters 4 and 1 is characterized in that the internal structure of the flow path switching valve unit 9, the meter 8, the sluice valve unit 10, the structure of the frame body 7 and the inside of the frame body 7 The description of the structure of other members housed in is omitted.

As shown in FIG. 2, a guide hole 13 is formed at the end of the gate valve unit 10 on the meter 8 side to detachably support the adapter 1. As shown in FIGS. 2, 3 and 4, the adapter 1 is composed of a cylindrical member that forms an inner hole through which water passes, and a tray 2 is formed on the end face side on the meter 8 side. The tray portion 2 supports the screw outer diameter portion 12 of the meter 8. When the outer diameter of the screw outer diameter portion 12 is 2R, the tray portion 2 forms a half-arc surface having a radius R as shown in FIG. In detail, the dimension of R of the half-arc surface of the tray portion 2 is slightly larger than the radius R of the screw outer diameter portion 12. The tray 2 has an appropriate depth in the axial direction so that the screw outer diameter portion 12 can be held, and the end surface 14 of the screw outer diameter portion 12 abuts on the inner side thereof as shown in FIG. The supporting end surface 15 is formed. A concave groove 16 into which a seal member can be inserted is formed on the support end surface 15.

On the other hand, a guide portion 17 to be inserted into the guide hole 13 of the sluice valve unit 10 is formed on the end surface side opposite to the receiving tray portion 2. An O-ring groove 19 into which the O-ring 18 shown in FIG. 2 is fitted is formed on the outer surface of the guide portion 17.

When the adapter 1 having the above structure is inserted into the sluice valve unit 10, the elastic force of the O-ring 18 securely holds and seals the adapter 1 in the sluice valve unit 10 in a detachable state. By placing the screw outer diameter portion 12 of the meter 8 on the tray portion 2 of the adapter 1 in this state and abutting the end surface 14 of the screw outer diameter portion 12 on the supporting end surface 15 of the meter 8, the screw outer diameter portion 12 becomes a sluice valve unit. It is held on the 10 side.

As described above, the screw outer diameter portion 12 of the meter 10 is made of various outer diameter dimensions even if the type and size are the same. Therefore, prepare several kinds of adapters 1 having different R dimensions of the arc surface of the tray portion 2 in advance, and use the R dimension adapter 1 that matches the outer diameter dimension of the screw outer diameter portion 12 of the meter 8 to be replaced. Thereby, the screw outer diameter portion 12 can be stably and reliably held.

In this case, it is necessary to distinguish the adapter 1 having the tray portion 2 having the R dimension corresponding to the outer diameter dimension of the screw outer diameter portion 12 from other ones. Therefore, in this example, as shown in FIG. 5 and the like, the display mark 3 corresponding to the R dimension of the tray 2 is displayed on the outer surface of the adapter 1. In this example, the display mark 3 is an O-ring groove formed on the outer surface of the adapter 1. By changing the number of the O-ring grooves, it is possible to display the trays 2 having different R dimensions. Of course, the display mark 3 is not limited to the above.

FIG. 6 shows the adapter 4 provided on the flow path switching valve unit 9 side. A holder handle 21 is rotatably supported by a holder 20 fixed to the valve box side of the flow path switching valve unit 9 in a state in which movement in the axial direction is restricted. The restraint structure is omitted here. The adapter 4 is screwed into the holder handle 21. That is, the adapter 4 is composed of a cylindrical body having an inner hole 22 through which water passes, is supported by the holder 20 and is screwed into the holder handle 21, and is detachably fixed to a predetermined axial position by the collar 23. As with the adapter 1, the tray portion 5 and the support end surface 24 are formed on the side end surface on the meter 8 side. The tray 5 supports the outer diameter of the screw outer diameter portion 11, and the supporting end surface 24 abuts on the end surface 25 of the screw outer diameter portion 11. Further, a groove 26 for sealing is formed on the support end face 24. Further, like the adapter 1, the indicator 4 is provided on the outer diameter of the adapter 4 to identify the value of the radius R of the tray 5.

With the above-described structure, as shown in FIG. 1, the screw outer diameter portions 11 and 12 of the meter 8 are supported by the adapter 4 and the receiving tray portions 5 and 2 of the adapter 1 at their outer diameters, and the holder handle is provided. By rotating 21, the support end faces 24, 15 come into contact with the end faces 25, 14 of the screw outer diameter portions 11, 12, and the meter 8 is stably held between the adapters 4, 1.

[0017]

[Effect of the invention]

 1) According to the support structure for a water supply meter according to claim 1 of the present invention, the screw outer diameter portions at both ends of the meter are held by the receiving portion of the adapter having an arc surface having a radius corresponding to the outer diameter dimension. In addition, since the adapter is clamped between the adapters, the screw outer diameter portion of the meter and the adapter are stably and reliably supported without rattling as in the prior art. By the above, troubles due to the structure of the screw outer diameter part of the same model of meter can be completely eliminated, and the work efficiency when replacing the meter can be improved. 2) According to the water supply meter support structure according to claim 2 of the present invention, an adapter having a size suitable for the outer diameter portion of the screw of the meter can be identified by its display mark, so that the adapter can be selected reliably. Meter replacement work can be done smoothly.

[Brief description of the drawings]

FIG. 1 is a side view showing the overall structure of a meter unit provided with a support structure for a water supply meter of the present invention.

FIG. 2 is a partial axial sectional view showing an adapter of the present invention for a gate valve unit and its mounting structure.

FIG. 3 is a sectional view of the adapter in FIG.

FIG. 4 is a front view taken along arrow A in FIG.

FIG. 5 is an enlarged partial cross-sectional view showing an example of a display mark provided on the outer diameter of the adapter.

FIG. 6 is a partial axial cross-sectional view showing an adapter on the flow path switching valve unit side and its mounting structure.

FIG. 7 is a partial axial sectional view showing an example of a conventional support structure for a meter on the side of a gate valve unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 adapter 2 saucer part 3 display mark 4 adapter 5 saucer part 6 display mark 7 frame body 8 meter 9 flow path switching valve unit 10 sluice valve unit 11 screw outer diameter part 12 screw outer diameter part 13 guide hole 14 end face 15 support end face 16 Recessed groove 17 Guide portion 18 O-ring 19 O-ring groove 20 Holder 21 Holder handle 22 Inner hole 23 Collar 24 Support end face 25 End face 26 Recessed groove

Claims (2)

[Utility model registration claims] 1. A support for holding both side ends of a meter in a water supply meter unit in which a meter for flow rate measurement and a flow path switching valve unit, a sluice valve unit and the like arranged on both sides thereof are housed in a frame body. In the structure, the flow path switching valve unit and the sluice valve unit can be detachably attached to the unit main body side with an adapter forming a pan portion having an arc surface matching the radius of the screw outer diameter portion at both ends of the meter. A support structure for a water supply meter, which is characterized in that it is fixed to a water supply. 2. The adapter is provided with a display mark for displaying a size commensurate with a screw outer diameter portion of the meter, and the display mark is provided at a visible position. Supporting structure for water supply meters.