JP3042975B2 - Equipment for connecting pipes to water equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for attaching a water supply device to a water supply pipe, and more particularly, to a water supply device which can be easily attached and detached, and further, replacement and inspection work of the water supply device. The present invention relates to an apparatus capable of performing the operation without interruption.

[0002]

2. Description of the Related Art Conventionally, it has been legally regulated that water is supplied directly from a third floor to an upper floor of a building. When water is supplied above the third floor, the water is once received in a water receiving tank and then supplied using a pump, or the water is supplied after being pumped into an elevated water tank.

In recent years, however, due to problems such as hygiene of the receiving tank, direct water supply to directly supply water to the third floor or higher, and direct water supply such as direct pressure water supply using a booster pump have been introduced. It has come to be recognized.

[0004]

By the way, it is required, for example, to replace a water meter periodically. When a water receiving tank is provided, the water accumulated in the water receiving tank can be used even during the replacement work, so that the problem of water cutoff did not occur.

[0005] However, in the case of direct water supply, the water is cut off when the water meter is replaced. In the case of a high-rise apartment house, it takes a great deal of labor to replace each house after notifying that water will be cut off.

In the case of direct water supply, there is a possibility that contaminated water on the downstream side may flow backward when the pressure in the water distribution pipe drops, and it is necessary to install a high-performance check valve to prevent this. And regular inspection is required. In this case as well, water interruption during inspection is inevitable with the conventional method.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and allows easy attachment and detachment of water supply equipment, and removes water supply equipment once connected to a water supply pipe for inspection or replacement. Can avoid water interruption at the time,
It is an object of the present invention to provide a device for connecting water supply equipment to piping.

[0008]

Means for Solving the Problems In order to solve the above-mentioned problems, a connecting device for connecting a water supply device such as a water meter according to the present invention to a pipe has the following configuration. That is, a first connecting means having one inflow port and first and second outflow ports for connecting an end of one pipe and one flow path connecting part of the water supply equipment, A second connecting means for connecting the end and the other flow path connecting portion of the water supply equipment, the first connecting means having first and second inlets and one outlet is provided. And
The second outlet of the first connecting means and the second inlet of the second connecting means are connected by a bypass pipe. Further, a first flow path passing through the first outlet of the first connection means, the water supply device, and the first inlet of the second connection means, a second outlet of the first connection means, a bypass pipe, and a second connection. Flow path switching means for switching the flow of water between the second flow path passing through the second inlet of the means and the second flow path is provided. Further, mounting means for detachably attaching the water supply device to the apparatus is provided. The mounting means includes a through flow path forming a part of the first flow path described above, and a first flow path is formed at one end of the through flow path. Attached to one of the first connection means and the second connection means, and extended by an external operation,
The other end side of the through flow path contacts the end of one of the flow path connecting portions of the water supply device, presses the water supply device toward the other of the first connection means and the second connection means, and is detachable from the connection device. It is configured to be attached to and fixed to.

[0009]

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 diagram showing an apparatus having a bypass pipe for connecting pipes of water supply equipment according to an embodiment of the present invention (hereinafter simply referred to as “apparatus”).
Say FIG. 1) is a plan view, in which the device is indicated by reference numeral 1 as a whole. The connected water supply equipment is the water meter 2 in the present embodiment. In addition, current water dispensers include a type in which a connection portion to another device or piping serves as a flange and is fastened with bolts and nuts, and a screw type. In the present embodiment, a flange type amount is used. I will explain with a water bottle. The details will be described below.

The apparatus 1 has first connection means 5. The first connection means 5 in the present embodiment is a three-way valve, and an inflow port 7 connected to an upstream pipe (not shown).
And one opening of the water meter 2, that is, a flow path connecting portion (flange)
The first outlet 9 is connected to the first outlet 3. Three-way valve 5
Is further provided with a second outlet 11, and by operating a handle (not shown), a ball disposed inside rotates to switch communication between the inlet 7 and the first and second outlets 9 and 11. It is supposed to be. The three-way valve 5 used in the present embodiment may be of a conventionally known type, and its configuration is well known, so that detailed description will be omitted. In addition, the three-way valve 5 of the present embodiment includes an arm 13 provided on the opposite side of the second outlet. This will be described later.

The present apparatus 1 is provided with a second connection means 15 for connecting a downstream pipe (not shown) and the other opening of the water meter 2, ie, a flow path connecting portion (flange) 4. I have. The second connection means 15 in this embodiment is cheese, and the water meter 2
A first inflow port 17 connected to the other opening, i.e., the flow path connecting portion 4, an outflow port 21 connected to the downstream pipe, and a second inflow port 19. The second inflow port 19 communicates in the middle of a flow path (not shown) communicating between the first inflow port 17 and the outflow port 21. This will be described later. Note that the cheese 15 of the present embodiment has an arm 22 located on the opposite side of the second inflow port 19. This will also be described later.

Reference numeral 23 denotes a valve device, which uses a gate valve in the present embodiment, but is not limited to this. The gate valve 23 is disposed between the first inflow port 17 of the cheese 15 and the other flow path connecting portion 4 of the water dispenser 2, and is externally operated so that the first inflow port 17 and the water The communication with the container 2 can be opened and closed. The gate valve 23 is screwed to the first inlet 17 of the cheese 15 using a nut 24 using a nut 24. As a connection portion to the water meter 2, a flange 23 a corresponding to the flange 4 of the water meter 2 is provided. The flange 23a has a hole 4a provided in the flange 4 of the water meter 2.
A pin 23b that can be fitted into the hole is planted.

Reference numeral 25 denotes a bypass pipe, whose both ends are connected to the first connection device, that is, the second outlet 11 of the three-way valve 5.
And a second connection device, ie, a second inlet 19 of the cheese 15.
And connected to.

Next, mounting means 26 for mounting and fixing the water meter 2 to the apparatus 1 will be described with reference to FIGS. FIG. 2 is a sectional view showing the mounting means 26. As shown in FIG.

Reference numeral 27 denotes a ball holder fixed at one end thereof to the first outlet 9 of the three-way valve 5 for holding a ball disposed in the three-way valve 5 at a predetermined position. In other words, it constitutes a part of the three-way valve 5. As is clear from FIG. 2, the ball retainer 27 forms a cylindrical body having a through hole 28 therein, and the other end side becomes a reduced diameter portion 29 having a reduced outer diameter. The large portion 31 is formed, the outer diameter is reduced again, and the portion is attached to the first outlet 9.

A rotating member 33 constituting the mounting means 26 is attached to the other end of the ball retainer 27 so as to be rotatable with respect to the ball retainer 27 but immovable in the axial direction. In this embodiment, the rotating member 33 is further composed of two members, one of which is a rotating cylinder 35 having a through hole therein, fitted at one end to the outer periphery of the reduced diameter portion 29 of the ball retainer 27. is there. A male screw 37 is formed on the outer periphery of the rotating cylinder 35 on the side of the portion where the rotary cylinder 35 is attached to the ball holder 27, and a female screw 3 is formed on the inner periphery from the other end to a predetermined position in the axial direction.
9 are formed. The inner diameter of the female screw 39 is larger than the inner diameter of the ball retainer 27. The rotating cylinder 35
A plurality of projections 40 extending radially outward are formed at predetermined intervals in the circumferential direction.

Reference numeral 41 denotes a nut, and a female screw 43 formed on the inner periphery at one end is screwed tightly with the male screw 37 of the rotary cylinder 35, so that the two rotate integrally. On the other end side of the nut 41, a low-height inner flange 45 facing inward in the radial direction is formed, and an inner end surface 47 of the inner flange 45 and an end surface 36 of the rotating cylinder 35 on the mounting portion side to the ball presser 27 are formed. Thus, the large-diameter portion 31 of the ball retainer 27 is sandwiched from both sides. Therefore, the rotating member 33, that is, the rotating cylinder 35 and the nut 41 can be integrally rotated with respect to the ball retainer 27, but cannot be moved in the axial direction. In order to rotate the rotating member 33, an appropriate tool that fits into the projection 40 of the rotating cylinder 35 is used.

Reference numeral 51 denotes a slide member having a through-hole 52 therein, and a first cylindrical portion 53 having a small diameter and a second cylindrical portion 55 having a large diameter.
And And the first cylindrical portion 53 is a ball retainer 2
7 is fitted in the through hole 28. Reference numeral 57 denotes a seal ring. On the outer periphery of the second cylindrical portion 55, a male screw 59 screwed with the female screw 39 of the rotary cylinder 35 is formed. 61 is a flange provided at the end of the second cylindrical portion 55,
A pin 63 having a size that can be fitted into the through hole 3a is provided at a connection end portion, that is, at a position corresponding to the through hole 3a formed in the flange 3. Reference numeral 65 denotes a cup seal housed in a groove formed on the end face of the flange 61.

Returning to FIG. 1, the arm 13 of the three-way valve 5 and the arm 22 of the cheese 15 are connected by a connecting rod 67 having a screw at both ends and a nut 68. 6
Reference numeral 9 denotes a first intermediate frame, which includes a bypass pipe 25 and a connecting rod 67.
And cylindrical portions 70 and 71 respectively fitted to the first and second portions, and a connecting portion 72 connecting these. Although not shown in FIG. 1, a leg that can be grounded when the device 1 is installed is provided on the lower surface side of the connecting portion 72, and the water meter 2 is received from below on the upper surface side. A water meter cradle is attached.

Reference numeral 73 denotes a second intermediate frame, which is a cylindrical portion 74, 75 fitted in the bypass pipe 25 and the connecting rod 67, respectively.
And a connecting portion 76 for connecting them. FIG.
Although not shown in the figure, a leg that can be grounded when the device 1 is installed is provided on the lower surface side of the connecting portion 76. The connecting portion 77 is an extension portion 77 extending rightward in the figure.
It has. Although not shown in the drawing, the lower part of the flange 61 of the slide member 51 of the mounting means 26 is partially cut out to be a flat surface, and this flat portion rests on the extension 77. Therefore, the extension 77 provides a means for preventing the rotation of the slide member 51.

The second outlet 1 of the three-way valve 5 of the bypass pipe 25
A drain valve 78 is mounted near the end connected to 1. Since the drain valve 78 may be of a known type, a detailed description is omitted.

In order to mount the water meter 2 to the apparatus 1, first, the rotating cylinder 35 of the mounting means 26 is rotated in one direction, and the slide member 55 is retracted to the position shown by the two-dot chain line in FIG. . Place the water meter 2 on the water receiver, and set the gate valve 2
The pin 23b of the third flange 23a is fitted into the hole 4a of the flange 4 of the water meter 2. Next, the rotating cylinder 3 of the mounting means 26
5 is rotated in the opposite direction to advance the slide member 55 to the position shown by the solid line in FIG. Here, in the three-way valve 5, when the inflow port 7 and the first outflow port 9 are communicated with each other and the gate valve 23 is opened, water flows from the inflow port 7 to the first outflow port 9 and the slide member 51 of the mounting means 26. Through-hole 52,
Water meter 2, gate valve 23, first inlet 17 of cheese 15,
It flows to the outlet 21 and forms a first flow path.

On the other hand, in the three-way valve 5, the inflow port 7 and the second
When the outlet 11 is connected and the gate valve 23 is closed, the water flows from the inlet 7 to the second outlet 11, the bypass pipe 25, the second inlet 19 of the cheese 15, and the outlet 21,
Is formed. That is, the three-way valve 5 and the gate valve 23 provide a flow path switching means for switching the first and second flow paths.

In a normal use state, the first flow path is defined and used. For example, when exchanging a water meter, the drain valve 78 is first opened for a certain time and the bypass pipe 25 is opened. Drain the water staying inside. Next, when the drain valve 78 is closed, the communication of the three-way valve 5 is switched, and the gate valve is closed, the above-described second flow path is defined. In this state, the rotary member 74 is rotated to retract the slide member. Thereby, the water meter 2 can be removed from the device 1. Even when this replacement work is being performed, the second flow path is defined, so that the water is not cut off.

FIG. 3 shows a second embodiment, and is a partial sectional view showing an embodiment in which the connecting portion of the water meter is of a screw type. Only the connecting portion between the device 1 and the water meter 2 is shown. Is shown.
The connecting portion 81 of the water meter 2 is a male screw. On the other hand, the end of the slide member of the attachment means of the device 1 is provided with a flange portion 83 extending radially outward and a short cylindrical portion 85 extending in the axial direction from the flange portion 83. As shown in the figure, the water meter 2 is fitted to the connecting portion. Then, the seal ring 87 received in the groove formed on the end surface of the flange portion 83 is compressed, and seals between the end surface of the connecting portion 81 of the water meter 2 and the end surface of the slide member. The lower portion of the cylindrical portion 85 of the slide member is partially cut, and serves to regulate the rotation of the slide member as in the previous embodiment.

FIG. 4 shows a partially cutaway side view of the device according to the third embodiment. This embodiment has the same configuration as that of the first embodiment except for the portions described below. Therefore, only the portions necessary for describing the configuration different from the first embodiment of the present embodiment are shown in the drawing. Is shown. The same members as those in the first embodiment are denoted by the same reference numerals.

The second inlet 19 of the cheese 15 as the second connecting means of the apparatus 101 communicates with an opening 104 in the middle of a flow path 103 connecting the first inlet 17 and the outlet 21. A thin pilot tube 105, which is a feature of the present embodiment, is provided. One end 107 is connected to the cheese at a position downstream of the first inlet 17 of the cheese 15 and at a position upstream of the opening 104, and the other end 109 is connected to the cheese. The bypass pipe 121 is connected to the bypass pipe 121 at a position near the first connection means, that is, the second outlet 11 of the three-way valve 5. One end 107 of the pilot tube 105 is located in the flow path 103 in the cheese 15 and opens to the upstream side as shown in the figure. On the other hand, the other end 109 of the pilot pipe 105 is connected to the bypass pipe 1
It is open in 21 toward the downstream side. In this embodiment,
The drain valve 78 used in the first embodiment has been eliminated. Reference numeral 111 denotes an orifice as a differential pressure generating means, which is provided between one end 107 of the pilot pipe 105 and the opening 104. As the differential pressure generating means, a Venturi tube or the like can be used.

In the case of the third embodiment, since the pilot pipe 105 is provided as described above, a part of the water flowing into the first inlet 17 of the cheese 15 is
It is led into the bypass pipe 121 through 05. And
Since the water pressure at the inflow end 107 of the pilot pipe 105 is higher than the water pressure at the opening 104 downstream thereof, the water that has entered the bypass pipe 121 flows to the opening 104, and
Flows to Therefore, since water does not stay in the bypass pipe 121, the three-way valve 5 and the gate valve 2 are immediately used without draining the water from the bypass pipe 121 at the time of replacing the water meter.
3 can be operated to switch the flow path. At this time, since the orifice 111 is provided as a differential pressure generating means, even if the flow rate is small, the flow of water through the pilot pipe 105 occurs between the both ends 107 and 109 of the pilot pipe 105. A sufficient pressure difference is ensured.

FIG. 5 is a partially cutaway side view showing a fourth embodiment of the present invention. This embodiment also has the same configuration as that of the first embodiment except for the portions described below. Therefore, only the portions necessary for describing a configuration different from the first embodiment of the present embodiment are shown in the drawing. Is shown. The same members as those in the first embodiment are denoted by the same reference numerals.

In this embodiment, the gate valve 23 is not used. The connecting portion 4 of the water meter 2 is connected to the cheese 1 via a connecting pipe 203 having a corresponding flange 205.
5 and the cheese 15 of the connecting pipe 203
Attachment is made by a nut 207.

In this embodiment, the first and second cheeses 15
Facing the inlet, cartridge type check valves 209 and 21
1 is attached. Although the check valves 209 and 211 are shown in a simplified manner, the check valve 209 allows the flow from the water meter 2 into the cheese 15 and prevents the flow in the reverse direction. The check valve 211 includes a bypass pipe 213.
From the inside into the cheese 15 and prevents the flow in the reverse direction. Therefore, when the inflow port 7 of the three-way valve 5 and the first outflow port 9 are communicated, the check valve 209 is opened, the check valve 211 is closed, and the first flow path is defined. On the other hand, when the inflow port 7 and the second outflow port 9 of the three-way valve 5 are communicated, the check valve 209 is closed, the check valve 211 is opened, and the second flow path is defined. Therefore, the flow path can be switched only by operating the three-way valve 5.

[0033]

As is apparent from the above description, according to the present invention, even when water supply equipment such as a water meter is inspected or replaced, the work can be carried out without interrupting the water supply. This is extremely convenient for both the user and the waterworks operator. Further, since the water supply equipment can be easily attached to and detached from the device, work efficiency is improved.

If a drain valve is attached to the bypass pipe, the water remaining in the bypass pipe can be drained before switching the flow path.

When a part of the water that has entered the first inlet of the second connecting means is guided to the bypass pipe by using the pilot pipe, the water flows downstream in the bypass pipe. Therefore, water does not stay in the bypass pipe. Therefore, there is no need to perform drainage work before switching the flow path, and work efficiency is further improved.

By arranging check valves at the first and second inlets of the second connecting means, it is possible to switch the flow path only by switching the communication in the first connecting means.

[Brief description of the drawings]

FIG. 1 is a plan view showing a configuration of an apparatus according to an embodiment of the present invention.

FIG. 2 is a partial cross-sectional view showing a configuration of an attaching means.

FIG. 3 is a partial sectional view showing the connection between the water meter and the mounting means of the second embodiment.

FIG. 4 is a partially cutaway side view showing a third embodiment.

FIG. 5 is a partially cutaway side view showing a fourth embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Apparatus 2 Water meter 3, 4 Connecting part (flange) 5 Three-way valve (1st connection means, flow-path switching means) 7 Inlet 9 1st outlet 11 2nd outlet 15 Cheese (2nd connection means) 17 1st inflow port 19 2nd inflow port 21 outflow port 23 Gate valve (flow path switching means) 25 Bypass pipe 26 Mounting means 33 Rotating member 35 Rotating cylinder 41 Nut 51 Slide member 105 Pilot pipe 209, 211 Check valve

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E03B 7/07 G01F 15/18

Claims (8)

(57) [Claims] 1. A connecting device for connecting a water supply device such as a water meter to a pipe, wherein one inflow port for connecting an end of one pipe and one flow path connecting portion of the water supply device is provided. A first connecting means having first and second outflow ports, and a first and second inflow port for connecting an end of the other pipe to the other flow path connecting portion of the water supply device; Second with two outlets
Connecting means, a bypass pipe connected to a second outlet of the first connecting means and a second inlet of the second connecting means, which bypasses the water supply device, and the first connecting means Of the first outflow port, the water supply device and the first connection means of the second connection means.
A first flow path passing through the inflow port, and a second flow path of the first connection means.
A flow path switching means for switching a flow of water between an outlet, a second flow path passing through the bypass pipe, and a second inlet of the second connection means, and a part of the first flow path. A through flow path to be formed, wherein one end of the through flow path is attached to one of the first connection means and the second connection means .
Telescopic mounting means,
The step is extended by an external operation, and
The other end of the road is connected to the one flow path connecting portion of the water supply equipment.
And the attachment means of the other flow path connecting portion
Abuts the flow path connecting part on the side corresponding to the attached connecting means
And the water supply device is provided with the mounting means.
A device for piping connection of a water supply device, wherein the device is pressed toward a connection means on a side that is not provided , and the water supply device is detachably attached to and fixed to the connection device. 2. An apparatus according to claim 1, wherein said mounting means is rotatable and axially immovable at either a first outlet of said first connecting means or an inlet of said second connecting means. A rotating member attached in the state of, a sliding member screw-connected to the rotating member, and a rotation regulating member for regulating the rotation of the sliding member, and by rotating the rotating member, the sliding member is A pipe connection device for water supply equipment, characterized in that it moves in the axial direction. 3. The apparatus according to claim 1, wherein said flow path switching means includes a three-way valve provided in said first connection means. 4. The apparatus according to claim 3, wherein said flow path switching means is further provided corresponding to said first inflow port of said second connection means, and said first inflow port and said water supply equipment are provided. And a valve device capable of opening and closing communication with the other connecting portion. 5. The apparatus according to claim 4, wherein the second inflow port of the second connection means is connected to the flow path in the middle of a flow path connecting the first inflow port and the outflow port. Opening, said apparatus further having one end communicating with said flow path between said first inlet and said second inlet of said second connecting means,
The other end includes a pilot pipe communicating with the bypass pipe in the middle of the bypass pipe. 6. The apparatus according to claim 5, wherein said apparatus further comprises a first end of said pilot pipe and a second end of said second connection means in a flow path connecting said first inlet and said outlet. A pipe connection device for water supply equipment, comprising a pressure difference generating means provided between the second inlet and the opening position of the second inlet. 7. The device according to claim 5, wherein
The pipe connection device for water supply equipment, wherein the one end of the pilot pipe is open toward an upstream side in a flow path connecting the first inflow port and the outflow port. 8. The apparatus according to claim 3, wherein the flow path switching means further allows a flow from the water supply equipment to the inflow port, which is arranged facing the inflow port of the second connection means, A check valve for preventing a flow in the opposite direction, and a flow passage from the bypass pipe to the second inlet, which is arranged facing the second inlet of the second connection means, and And a check valve for preventing flow.