JP2021195963A - Decompression valve unit - Google Patents

Abstract

To propose a decompression valve unit capable of easily connecting a decompression valve unit connected to a vertical pipe and piping on a secondary side of the decompression valve unit, even if those are shifted.SOLUTION: A decompression valve unit 1 is equipped with an inflow pipe 10, a water stop valve 11, and a water stop valve connection mechanism 14 connecting the water stop valve 11 to the inflow pipe 10. A decompression valve unit 1C is equipped with a decompression valve 17 connected to the opposite side to the inflow pipe 10 of the water stop valve 11. A first pipe portion 27 is equipped with an upstream side pipe portion 25 extending in a first axial direction X, a downstream side pipe portion 26 extending coaxially with the upstream side pipe portion 25 on a second direction X2 side of the upstream side pipe portion 25, and a rotary connection mechanism 30 that connects the downstream side pipe portion 26 to the upstream side pipe portion 25 so as to be rotatable about a first axis L1. The water stop valve connection mechanism 14 connects the water stop valve 11 to a second pipe part 22 so as to be rotatable about a second axis L2.SELECTED DRAWING: Figure 1

Description

The present invention relates to a pressure reducing valve unit that connects a vertical pipe and a water pipe.

In buildings such as high-rise hotels and condominiums, if you try to secure water pressure in each room on the top floor, the water pressure in each room on the lower floor will be too high. Therefore, on each floor, a pressure reducing valve is installed between the vertical pipe for water supply and the pipe for water supply extending to each room, and the water supply in each room on each floor is adjusted to a predetermined water pressure. Patent Document 1 describes a pressure reducing valve unit used in such a case. The pressure reducing valve unit of the same document includes a pressure reducing valve and a water stop valve connected to the primary side of the pressure reducing valve.

Japanese Unexamined Patent Publication No. 2020-35299

The water supply system vertical pipe and pressure reducing valve unit are generally installed on a pipe shaft in which an electric meter, information system wiring, a water heater, a gas meter, etc. are installed. Therefore, the connection between the vertical pipe and the pressure reducing valve unit and the connection between the pressure reducing valve unit and the pipe for water supply are performed in a relatively narrow space in the pipe shaft.

Here, if the pressure reducing valve unit connected to the vertical pipe and the water pipe connected to the secondary side of the pressure reducing valve unit do not have a desired positional relationship in the pipe shaft, the pressure is reduced to the vertical pipe. It will be necessary to reconnect the valve unit and change the layout of the water pipes. In this case, it is not easy to install the pressure reducing valve unit and route the piping in a limited space.

In view of these points, the subject of the present invention is that even if the pressure reducing valve unit connected to a vertical pipe or the like and the pipe located on the secondary side thereof are displaced from a desired positional relationship, these connections are made. The present invention is to propose a pressure reducing valve unit that can easily perform the above.

In order to solve the above problems, the pressure reducing valve unit of the present invention includes an inflow pipe, a water stop valve, a water stop valve connecting mechanism for connecting the water stop valve to the inflow pipe, and the inflow of the water stop valve. It has a pressure reducing valve connected to the opposite side of the pipe, and the inflow pipe has a first pipe portion extending in the first axial direction along the first axis and the first pipe portion communicating with the first pipe portion. A second pipe portion extending in the second axis direction along the second axis intersecting the one axis is provided, and the first pipe portion includes an upstream side pipe portion extending in the first axis direction and the upstream side pipe. It is provided with a downstream side pipe portion coaxial with the portion and a rotary connection mechanism for rotatably connecting the downstream side pipe portion to the first pipe portion around the first axis, and flows into the inflow pipe. The water flows through the upstream side pipe portion and the downstream side pipe portion in this order, the second pipe portion communicates with the downstream side pipe portion, and the water stop valve connecting mechanism connects to the second pipe portion. On the other hand, the water stop valve is rotatably connected around the second axis.

In the pressure reducing valve unit of the present invention, the inflow pipe includes a rotary connection mechanism for rotatably connecting the downstream pipe portion through which the second pipe portion communicates to the upstream pipe portion around the first axis. Further, the water stop valve connecting mechanism for connecting the second pipe portion of the inflow pipe and the water stop valve connects the water stop valve to the second pipe portion so as to be rotatable around the second axis. Therefore, for example, when the upstream side pipe portion of the inflow pipe is connected to the vertical pipe, the pressure reducing valve unit main body portion including the water stop valve and the pressure reducing valve can rotate around the first axis and the second axis. .. Therefore, if the pressure reducing valve unit main body of the pressure reducing valve unit connected to the vertical pipe and the water pipe connected to the secondary side of the pressure reducing valve unit main body are not arranged in a desired positional relationship, the pressure reducing valve unit By rotating the main body around the first axis, the positional relationship between the pressure reducing valve unit main body and the water pipe connected to the secondary side of the pressure reducing valve unit can be adjusted. This makes it possible to connect the pressure reducing valve unit and the pipe without having to reattach the pressure reducing valve unit to the vertical pipe or laying the pipe around. Therefore, it becomes easy to connect the pressure reducing valve unit and the pipe located on the secondary side thereof. Further, the pressure reducing valve unit main body rotates around the second axis. Therefore, when the pressure reducing valve unit main body is rotated around the first axis, the direction of the handle of the water stop valve can be oriented in a direction that is easy to operate.

Next, in another form of the pressure reducing valve unit of the present invention, the inflow pipe, the first water stop valve, the second water stop valve, and the first water stop valve connecting the first water stop valve to the inflow pipe are connected. A plug connection mechanism, a second stopcock connection mechanism for connecting the second stopcock to the inflow pipe, and a first pressure reducing valve connected to the opposite side of the first stopcock to the inflow pipe. , A second pressure reducing valve connected to the side opposite to the inflow pipe of the second stopcock, and the inflow pipe is a first pipe portion extending in the first axial direction along the first axis. A second pipe portion that communicates with the first pipe portion and extends in the direction of the second axis along the second axis that intersects with the first axis, and a second pipe portion that communicates with the first pipe portion and intersects with the first axis. A third pipe portion extending in the third axis direction along the third axis is provided, and the first pipe portion includes a first pipe portion extending in the first axis direction and a first pipe portion coaxial with the first pipe portion. The water flowing into the inflow pipe is provided with a two-pipe portion and a rotary connection mechanism for rotatably connecting the second pipe portion to the first pipe portion around the first axis. The first pipe portion and the second pipe portion flow in this order, the second pipe portion communicates with the first pipe portion, the third pipe portion communicates with the second pipe portion, and the first pipe portion communicates with the first pipe portion. The stopcock connection mechanism rotatably connects the first stopcock to the second pipe portion around the second axis, and the second stopcock connection mechanism connects to the third pipe portion. On the other hand, the second water stopcock is rotatably connected around the third axis.

In the pressure reducing valve unit of the present invention, the inflow pipe is a rotary connection that allows the second pipe portion through which the third pipe portion communicates to rotate about the first axis with respect to the first pipe portion through which the second pipe portion communicates. Equipped with a mechanism. In addition, the first stopcock connection mechanism that connects the second pipe portion of the inflow pipe and the first stopcock connects the first stopcock to the second pipe portion so as to be rotatable around the second axis. do. Further, the second stopcock connecting mechanism for connecting the third pipe portion of the inflow pipe and the second stopcock connects the second stopcock to the third pipe portion so as to be rotatable around the third axis. do. Therefore, for example, when the first pipe portion of the inflow pipe is connected to the vertical pipe, the first pressure reducing valve unit main body including the first water stop valve and the first pressure reducing valve can rotate around the second axis. .. Further, the second pressure reducing valve unit main body including the second water stop valve and the second pressure reducing valve can rotate around the first axis and around the third axis.

Here, when the second pressure reducing valve unit main body of the pressure reducing valve unit connected to the vertical pipe and the water pipe connected to the secondary side of the second pressure reducing valve unit main body are not arranged in a desired positional relationship. The second pressure reducing valve unit body is rotated around the first axis to adjust the positional relationship between the second pressure reducing valve unit body and the water pipe connected to the secondary side of the second pressure reducing valve unit body. can. As a result, the second pressure reducing valve unit main body and the pipe can be connected without having to reattach the pressure reducing valve unit to the vertical pipe or laying the pipe around. Therefore, even if the pressure reducing valve unit and the piping located on the secondary side of the second pressure reducing valve unit main body are displaced from the desired positional relationship, these connections can be easily performed. Further, the second pressure reducing valve unit main body rotates around the third axis. Therefore, when the second pressure reducing valve unit body is rotated around the first axis, the second pressure reducing valve unit body is rotated around the third axis, and it is easy to operate the direction of the handle of the second water stop valve. Can be turned in the direction. Further, since the first pressure reducing valve unit main body can be rotated around the second axis, the direction of the handle of the first water stop valve can be oriented in a direction that is easy to operate.

Further, in the pressure reducing valve unit of the present invention of another embodiment of the present invention, the inflow pipe, the first water stopcock, the second water stopcock, and the first water stopcock are connected to the inflow pipe. A first decompression connected to a water stop valve connection mechanism, a second water stop valve connection mechanism for connecting the second water stop valve to the inflow pipe, and a side opposite to the inflow pipe of the first water stop valve. It has a valve and a second pressure reducing valve connected to the side opposite to the inflow pipe of the second stopcock, and the inflow pipe is a first axis extending in the first axial direction along the first axis. The pipe portion, the second pipe portion that communicates with the first pipe portion and extends in the direction of the second axis along the second axis that intersects with the first axis, and the first shaft that communicates with the first pipe portion. A third pipe portion extending in the third axis direction along the intersecting third axis is provided, and the first pipe portion is coaxial with the upstream side pipe portion extending in the first axis direction and the upstream side pipe portion. The first rotation that rotatably connects the first pipe portion, the second pipe portion coaxial with the first pipe portion, and the first pipe portion to the upstream side pipe portion around the first axis. It has a connection mechanism 31 and a second rotation connection mechanism 32 that rotatably connects the second pipe portion to the first pipe portion around the first axis, and water flowing into the inflow pipe. Flows through the upstream side pipe portion, the first pipe portion, and the second pipe portion in this order, the second pipe portion communicates with the first pipe portion, and the third pipe portion is the first pipe portion. Communicating with the two pipe portions, the first stopcock connecting mechanism rotatably connects the first stopcock to the second pipe portion around the second axis, and the second stopcock is connected to the second pipe portion. The connection mechanism is characterized in that the second water stop valve is rotatably connected to the third pipe portion around the third axis.

In the pressure reducing valve unit of the present invention, the inflow pipe includes a first rotation connection mechanism 31 that allows the first pipe portion through which the second pipe portion communicates to rotate about the first axis with respect to the upstream side pipe portion. Further, the inflow pipe includes a second rotation connection mechanism 32 that allows the second pipe portion through which the third pipe portion communicates to rotate about the first axis with respect to the first pipe portion. Further, the first stopcock connection mechanism for connecting the second pipe portion of the inflow pipe and the first stopcock connects the first stopcock to the second pipe portion so as to be rotatable around the second axis. do. Further, the second stopcock connection mechanism for connecting the third pipe portion and the second stopcock of the inflow pipe rotatably connects the second stopcock to the third pipe portion around the third axis. do. Therefore, for example, when the upstream side pipe portion of the inflow pipe is connected to the vertical pipe, the first pressure reducing valve unit main body including the first water stop valve and the first pressure reducing valve is rotated around the first shaft and around the second shaft. It is rotatable to. Further, the second pressure reducing valve unit main body including the second water stop valve and the second pressure reducing valve can rotate around the first axis and around the third axis.

Here, the first pressure reducing valve unit main body of the pressure reducing valve unit connected to the vertical pipe and the first pipe for water supply connected to the secondary side of the first pressure reducing valve unit main body are arranged in a desired positional relationship. If not, the first pressure reducing valve unit main body can be rotated around the first axis to adjust the positional relationship between the first pressure reducing valve unit main body and the first pipe. Further, the second pressure reducing valve unit main body of the pressure reducing valve unit connected to the vertical pipe and the second pipe for water supply connected to the secondary side of the second pressure reducing valve unit main body are not arranged in a desired positional relationship. In this case, the second pressure reducing valve unit main body can be rotated around the first axis to adjust the positional relationship between the second pressure reducing valve unit main body and the second pipe. As a result, the second pressure reducing valve unit main body and the pipe can be connected without having to reattach the pressure reducing valve unit to the vertical pipe or laying the pipe around. Therefore, even if the pressure reducing valve unit connected to the vertical pipe and the first pipe are displaced from the desired positional relationship, these connections can be easily made. Further, even when the pressure reducing valve unit connected to the vertical pipe and the second pipe are displaced from the desired positional relationship, these connections can be easily performed.

Further, the first pressure reducing valve unit main body rotates around the second axis. Therefore, when the first pressure reducing valve unit body is rotated around the first axis, the first pressure reducing valve unit body is rotated around the second axis, and it is easy to operate the direction of the handle of the first water stop valve. Can be turned in the direction. Similarly, the second pressure reducing valve unit main body rotates around the third axis. Therefore, when the second pressure reducing valve unit body is rotated around the first axis, the second pressure reducing valve unit body is rotated around the third axis, and it is easy to operate the direction of the handle of the second water stop valve. Can be turned in the direction.

In the present invention, the first pipe portion and the second pipe portion are composed of one piping member, and in the piping member, the second pipe portion is from the middle of the first pipe portion in the first axial direction. On the inner peripheral surface of the piping member, which protrudes in the second axis direction, the first pipe axis of the first pipe portion extending along the first axis and the second pipe extending along the second axis. It is desirable that a guide protrusion is provided on one side of the virtual surface including the second pipe shaft of the portion to guide a part of the water flowing through the first pipe portion to the second pipe portion. By doing so, a part of the water flowing through the first pipe portion flows into the second pipe portion along the guide protrusion. Therefore, the water flowing from the inflow pipe flows through the second pipe portion and the first pressure reducing valve unit main body to the pipe connected to the secondary side of the first pressure reducing valve unit main body, and also flows through the third pipe portion and the third pressure reducing valve unit main body. It can flow through the pipe connected to the secondary side of the second pressure reducing valve unit main body via the second pressure reducing valve unit main body. Further, if such a guide protrusion is provided, it becomes easy to secure the flow rate of water flowing through the first pressure reducing valve unit main body.

In the present invention, the guide protrusion is the first pipe portion from a region of the second pipe portion on the side of the first pipe portion and located in the second direction from the second pipe axis. The end of the guide protrusion in the first direction can be located in the first direction with respect to the second pipe axis. By doing so, it is easy to guide the water flowing through the first pipe portion to the second pipe portion by the guide protrusion.

In the present invention, as the guide protrusion, one side guide protrusion provided on one side of the virtual surface and the other guide protrusion provided on the other side of the virtual surface are provided, and the one side is provided. The guide protrusion and the other side guide protrusion may be continuous in a region located in the second direction of the second pipe portion with respect to the second pipe shaft. By doing so, the water flowing through the first pipe portion is seconded by the pair of guide protrusions including the one-side guide protrusion and the other-side guide protrusion, and the portion where the pair of guide protrusions are continuous. You can guide to the pipe part. Therefore, it becomes easier to secure the flow rate of the water flowing through the first pressure reducing valve unit main body.

In the present invention, the inner diameter of the second pipe portion can be smaller than the inner diameter of the first pipe portion. By doing so, the water flowing through the first pipe portion easily flows into the second pipe portion. Therefore, it becomes easier to secure the flow rate of the water flowing through the first pressure reducing valve unit main body.

In the pressure reducing valve unit of the present invention, when the inflow pipe is connected to a vertical pipe or the like, the pressure reducing valve unit main body including the water stop valve and the pressure reducing valve can be rotated around the first axis. Therefore, if the pressure reducing valve unit main body and the water pipe connected to the secondary side of the pressure reducing valve unit main body are not arranged in a desired positional relationship, the pressure reducing valve unit main body is rotated around the first axis. Therefore, the positional relationship between the pressure reducing valve unit main body and the water pipe connected to the secondary side of the pressure reducing valve unit can be adjusted. Therefore, it becomes easy to connect the pressure reducing valve unit and the pipe located on the secondary side thereof. Further, in the pressure reducing valve unit, the pressure reducing valve unit can be rotated around the second axis intersecting the first axis. Therefore, when the pressure reducing valve unit main body is rotated around the first axis, the direction of the handle of the water stop valve can be turned in a direction that is easy to operate.

It is a perspective view of the pressure reducing valve unit of Example 1. FIG. It is sectional drawing of the inflow pipe of the pressure reducing valve unit of Example 1. FIG. It is sectional drawing of the pressure reducing valve unit main body of the pressure reducing valve unit of Example 1. FIG. It is explanatory drawing of the installation state which changed the direction of a pressure reducing valve unit main body. It is explanatory drawing of another installation state which changed the direction of a pressure reducing valve unit main body. It is a perspective view of the pressure reducing valve unit of Example 2. FIG. It is sectional drawing of the inflow pipe of the pressure reducing valve unit of Example 2. FIG. It is a side view of the cheese which constitutes an inflow pipe. FIG. 8 is a cross-sectional view taken along the line AA of FIG. FIG. 8 is a cross-sectional view taken along the line BB of FIG. It is explanatory drawing of the installation state which changed the direction of the 2nd pressure reducing valve unit main body in the pressure reducing valve unit of Example 2. FIG. It is explanatory drawing of another installation state which changed the direction of the 2nd pressure reducing valve unit main body in the pressure reducing valve unit of Example 2. FIG. It is a perspective view of the pressure reducing valve unit of Example 3. FIG. It is sectional drawing of the inflow pipe of the pressure reducing valve unit of Example 3. FIG. It is explanatory drawing of the installation state which changed the direction of the 2nd pressure reducing valve unit main body in the pressure reducing valve unit of Example 3. FIG. It is explanatory drawing of another installation state which changed the direction of the 2nd pressure reducing valve unit main body in the pressure reducing valve unit of Example 3. FIG. It is a side view of the pressure reducing valve unit of a modification.

Hereinafter, the pressure reducing valve unit according to the embodiment of the present invention will be described with reference to the drawings.

(Example 1)
FIG. 1 is a perspective view of the pressure reducing valve unit of the first embodiment. FIG. 2 is a cross-sectional view of the inflow pipe of the pressure reducing valve unit of the first embodiment. FIG. 3 is a cross-sectional view of the pressure reducing valve unit main body of the pressure reducing valve unit of the first embodiment. The pressure reducing valve unit 1 is installed between the water supply vertical pipe 2 and the water supply pipe 4 extending to each room on each floor of a high-rise hotel or condominium so that the water supply in each room has a predetermined water pressure. Adjust. The water supply system vertical pipe 2 and the pressure reducing valve unit 1 are generally installed on a pipe shaft in which an electric meter, information system wiring, a water heater, a gas meter, and the like are installed.

As shown in FIG. 1, the pressure reducing valve unit 1 includes an inflow pipe 10, a water stop valve 11, and a water stop valve connection mechanism 14 for connecting the water stop valve 11 to the inflow pipe 10. Further, the pressure reducing valve unit 1 includes a pressure reducing valve 17 connected to the side opposite to the inflow pipe 10 of the water stop valve 11. The water stop valve 11 and the pressure reducing valve 17 form a pressure reducing valve unit main body 20. The primary side of the inflow pipe 10 is connected to the vertical pipe 2 via the pipe joint 3. The pressure reducing valve unit main body 20 is arranged on the secondary side of the inflow pipe 10. A water pipe 4 is connected to the secondary side of the pressure reducing valve unit main body 20. That is, a water pipe 4 is connected to the secondary side of the pressure reducing valve 17.

(Inflow pipe)
As shown in FIGS. 1 and 2, the inflow pipe 10 communicates with the first pipe portion 21 extending in the first axis direction X along the first axis L1 and intersects the first axis L1. A second pipe portion 22 extending in the second axis direction Y along the second axis L2 is provided. The first pipe portion 21 and the second pipe portion 22 communicate with each other via a curved pipe portion 24 continuous with the end portion of the first pipe portion 21 opposite to the vertical pipe 2. One end of the first pipe portion 21 is connected to the vertical pipe 2. The first axis L1 and the second axis L2 are orthogonal to each other. Therefore, as shown in FIG. 2, the first pipe axis L21 of the first pipe portion 21 and the second pipe shaft L22 of the second pipe portion 22 are orthogonal to each other. In the following description, the upstream side in the flow direction of the water flowing through the first pipe portion 21 in the first axial direction X is referred to as the first direction X1, and the downstream side is referred to as the second direction X2. That is, in the first pipe portion 21, the side where the vertical pipe 2 is located is referred to as the first direction X1, and the side where the curved pipe portion 24 is located is referred to as the second direction X2.

The first pipe portion 21 includes an upstream pipe portion 25 extending in the first axial direction X, and a downstream pipe portion 26 extending coaxially with the upstream pipe portion 25 on the side of the upstream pipe portion 25 in the second direction X2. A rotary connection mechanism 30 for rotatably connecting the downstream side pipe portion 26 to the upstream side pipe portion 25 around the first axis L1 is provided. The water flowing from the vertical pipe 2 into the inflow pipe 10 flows through the upstream side pipe portion 25 and the downstream side pipe portion 26 in this order. The second pipe portion 22 communicates with the downstream side pipe portion 26 of the first pipe portion 21 via the curved pipe portion 24. The second pipe portion 22, the curved pipe portion 24, and the downstream side pipe portion 26 are made of an elbow 8. The elbow 8 curves in the first axial direction X toward the second direction X2 in the first axial direction Y. The elbow 8 includes a protrusion 8a protruding from the curved tube portion 24 to the outer peripheral side.

As shown in FIG. 2, the upstream side pipe portion 25 includes a large-diameter tubular portion 33 having a diameter larger than that of the portion on the side of the first direction X1 at the end portion of the second direction X2. The rotary connection mechanism 30 has a large diameter cylinder portion 33, an insertion cylinder portion 34 which is an end portion of the downstream side pipe portion 26 in the first direction X1 and is inserted into the inner peripheral side of the large diameter cylinder portion 33, and a large diameter. An annular packing 35 interposed between the cylinder portion 33 and the insertion cylinder portion 34, and a ring-shaped member 36 interposed between the large diameter cylinder portion 33 and the insertion cylinder portion 34 are provided.

More specifically, regarding the rotary connection mechanism 30, a notch 37 cut out from the tip end side and the outer peripheral side is provided at the end portion of the insertion cylinder portion 34 in the first direction X1. The packing 35 is arranged in the notch 37 and is elastically deformed in the radial direction between the insertion cylinder portion 34 and the large diameter cylinder portion 33. Further, the insertion cylinder portion 34 is provided with an inner annular groove 38 surrounding the first tube shaft L21 in the second direction X2 of the notch portion 37. The large diameter cylinder portion 33 includes an outer annular groove 39 that faces the inner annular groove 38 in the radial direction when the insertion cylinder portion 34 is inserted into the large diameter cylinder portion 33. The inner peripheral side portion of the ring-shaped member 36 is inserted into the inner annular groove 38, and the outer peripheral side portion thereof is inserted into the outer annular groove 39.

(Faucet)
Next, the water stop valve 11 is a ball water stop valve. As shown in FIG. 3, the water stop valve 11 has a valve box portion 50, an inflow pipe portion 51 extending from the valve box portion 50 in the second axial direction Y, and an inflow pipe from the valve box portion 50 in the second axial direction Y. It includes an outflow pipe portion 52 extending to the opposite side of the portion 51. The valve box portion 50 includes a valve chamber 53 inside. A ball valve body 54 is housed in the valve chamber 53. Further, the ball stopcock includes a handle 55 for rotating the ball valve body 54. The handle 55 includes a shaft portion 56 and an operation portion 57 provided at one end of the shaft portion 56. The shaft portion 56 penetrates the valve box portion 50 from the outside to the inside in the orthogonal direction V orthogonal to the second axis L2, and the end portion of the shaft portion 56 opposite to the operation portion 57 is a ball valve. It is connected to the body 54. Here, the inflow pipe portion 51 is connected to the second pipe portion 22 of the inflow pipe 10 via the water stop valve connecting mechanism 14.

(Faucet connection mechanism)
The water stop valve connection mechanism 14 rotatably connects the water stop valve 11 to the second pipe portion 22 around the second axis L2. As shown in FIG. 2, the second pipe portion 22 includes a large-diameter tubular portion 41 having a diameter larger than that of the portion on the curved pipe portion 24 side at the end portion in the second axial direction Y. The water stopcock connection mechanism 14 includes a large-diameter cylinder portion 41, an insertion cylinder portion 51a which is the tip portion of the inflow pipe portion 51 of the water stopcock 11 and is inserted into the inner peripheral side of the large-diameter cylinder portion 41, and a stop. In the inflow pipe portion 51 of the faucet 11, it is interposed between the annular faucet side flange portion 51b protruding from the position adjacent to the insertion cylinder portion 51a to the outer peripheral side, and the large diameter cylinder portion 41 and the insertion cylinder portion 51a. The two annular packings 44, the large diameter cylinder portion 41, and the insertion cylinder portion 51a of the water stop valve 11 are held so as not to be separated in the second axis direction Y and rotatably around the second axis L2. A holding mechanism 45 is provided.

More specifically, the large-diameter tubular portion 41 of the second pipe portion 22 flows into the end portion of the second pipe portion 22 at a position adjacent to the annular inflow pipe side flange portion 42 protruding to the outer peripheral side and the inflow pipe side flange portion 42. An annular recess 43 provided along the pipe-side flange portion 42 is provided. When the insertion cylinder portion 51a of the water stop valve 11 is inserted into the large diameter cylinder portion 41, the water stop valve side flange portion 51b comes into contact with the inflow pipe side flange portion 42. The insertion tube portion 51a of the water stop valve 11 is provided with two annular grooves 51c provided in parallel on the outer peripheral surface thereof. The two packings 44 are respectively arranged in the annular groove 51c, and are elastically deformed in the radial direction between the large-diameter cylinder portion 41 and the insertion cylinder portion 51a of the water stop valve 11. The holding mechanism 45 includes a plurality of holding members 46 having an arc groove 46a capable of receiving the water stop valve side flange portion 51b and the inflow pipe side flange portion 42 in contact with each other in the second axial direction Y. As shown in FIG. 1, the plurality of holding members 46 are arranged apart from each other around the second axis L2. As shown in FIG. 2, each holding member 46 is above the arc groove 46a in the second axial direction Y when the water stop valve side flange portion 51b and the inflow pipe side flange portion 42 are inserted into the arc groove 46a. The located portion abuts on the bottom surface of the annular recess 43 of the large-diameter tubular portion 41, and the portion located below the arc groove 46a is the outer peripheral surface of the inflow pipe portion 51 of the water stop valve 11 and the flange portion 51b on the water stop valve side. It abuts on the part adjacent to. Further, as shown in FIG. 1, the holding mechanism 45 pulls the wire member 47 spanned over the plurality of holding members 46 and the wire member 47 in the circumferential direction to form each of the plurality of holding members 46 in the annular recess 43. A tightening mechanism 48 for pressing the bottom surface and the outer peripheral surface of the inflow pipe portion 51 of the water stop valve 11 is provided. The tightening mechanism 48 maintains a state in which each holding member 46 is pressed against the bottom surface of the annular recess 43 and the outer peripheral surface of the inflow pipe portion 51 of the water stop valve 11.

(Pressure reducing valve)
As shown in FIG. 3, the pressure reducing valve 17 has an inflow pipe portion 61 extending in the second axial direction Y, an outflow pipe portion 62 coaxial with the inflow pipe portion 61, and an inflow pipe portion 61 and an outflow pipe portion 62. It is provided with a pressure reducing valve main body portion 60 located at. The inflow pipe portion 61 is connected to the outflow pipe portion 52 of the water stop valve 11 via the connection mechanism 58. The connection mechanism 58 is a general one including a cap nut and packing. The pressure reducing valve main body portion 60 has an internal flow path 65 that communicates with the inflow pipe portion 61 and the outflow pipe portion 62. Further, the pressure reducing valve main body portion 60 holds the diaphragm 66 inside. The water flowing into the pressure reducing valve 17 through the water stop valve 11 passes through the inflow pipe portion 61, the internal flow path 65, and the outflow pipe portion 62 in this order. A water pipe 4 leading to each room of the building is connected to the outflow pipe portion 62. A check valve may be arranged at the end of the pipe 4 on the pressure reducing valve 17 side.

The internal flow path 65 provided in the pressure reducing valve main body portion 60 includes a flow path portion 67 extending in the orthogonal direction V orthogonal to the second axis L2. The flow path portion 67 extends coaxially with the diaphragm 66. The flow path portion 67 includes an intermediate region 67a communicating with the inflow pipe portion 61 in the middle in the orthogonal direction V. The end of the flow path portion 67 opposite to the diaphragm 66 is the downstream end of the flow path portion 67. An annular valve seat 68 is provided at the opening edge of the downstream end of the flow path portion 67. Here, in the internal flow path 65, the first region 65a located on the side opposite to the flow path portion 67 of the valve seat 68, and the second region located on the side of the diaphragm 66 with respect to the intermediate region 67a in the flow path portion 67. Communicate with 65b. The first region 65a and the second region 65b are downstream flow path portions 69 located on the downstream side of the valve seat 68 in the internal flow path 65. The downstream side flow path portion 69 communicates with the outflow pipe portion 62. The intermediate region 67a and the second region 65b are shielded by a shielding member.

The diaphragm 66 constitutes a part of the wall surface of the downstream flow path portion 69. The diaphragm 66 has a circular contour shape when viewed from the orthogonal direction V. The diaphragm 66 is arranged at a position where it overlaps with the flow path portion 67 and the valve seat 68 when viewed from the orthogonal direction V. The outer peripheral edge of the diaphragm 66 is held by the pressure reducing valve main body portion 60. The diaphragm 66 is supported at a predetermined position by a coil spring 70 arranged on the side opposite to the internal flow path 65 of the diaphragm 66. The central portion of the diaphragm 66 is displaced in the orthogonal direction V in response to the pressure of water in the downstream flow path portion 69.

A stem 71 is fixed to the side of the diaphragm 66 opposite to the coil spring 70, and the stem 71 extends in the orthogonal direction V from the central portion of the diaphragm 66. The stem 71 penetrates the shielding member from the second region 65b of the flow path portion 67, penetrates the valve seat 68 via the intermediate region 67a, and reaches the first region 65a. A valve body 72 is fixed to the end of the stem 71 opposite to the diaphragm 66. The valve body 72 is located in the first region 65a and faces the valve seat 68 from the downstream side of the valve seat 68.

When the central portion of the diaphragm 66 is displaced in the orthogonal direction V in response to the pressure of water in the downstream flow path portion 69, the stem 71 is displaced in the orthogonal direction V with the displacement of the diaphragm 66. As a result, the valve body 72 is displaced in the direction toward and away from the valve seat 68 to change the distance from the valve seat 68. Therefore, the pressure reducing valve 17 can adjust the pressure of water passing through the pressure reducing valve 17 to a predetermined pressure.

(Connection between the vertical pipe and the water pipe via the pressure reducing valve unit)
FIG. 4 is an explanatory diagram of an installed state in which the direction of the pressure reducing valve unit main body 20 is changed in the pressure reducing valve unit 1 of the first embodiment. FIG. 5 is an explanatory diagram of a usage state in another installation state in which the direction of the pressure reducing valve unit main body 20 is changed in the pressure reducing valve unit 1 of the first embodiment.

First, as shown in FIG. 1, the water pipe 4 connected to the secondary side of the pressure reducing valve unit 1 is installed in parallel with the vertical pipe 2, and the pipe 4 is attached to the vertical pipe 2. When it is located below the pipe joint 3, the downstream pipe portion 26 of the first pipe portion 21 of the inflow pipe 10 of the pressure reducing valve unit 1 is rotated around the first shaft L1 to rotate the second pipe portion 22. Is directed downward, and the second pipe portion 22 and the vertical pipe 2 are parallel to each other. After that, the pipe 4 is connected to the outflow pipe portion 62 of the pressure reducing valve 17.

Here, although not shown, if the pipe joint 3 attached to the vertical pipe 2 and the pipe 4 are displaced in the circumferential direction around the pipe axis L0 of the vertical pipe 2, the downstream side pipe portion 26 The position of the rotation angle around the first axis L1 with respect to the upstream side pipe portion 25 of the above is adjusted so that the second pipe portion 22 is tilted with respect to the vertical pipe 2. As a result, the position of the outflow pipe portion 62 of the pressure reducing valve 17 and the pipe 4 in the circumferential direction is aligned, and then the pipe 4 is connected to the outflow pipe portion 62 of the pressure reducing valve 17.

Further, when the vertical pipe 2 and the pipe 4 are connected via the pressure reducing valve unit 1, when the operation unit 57 of the water stop valve 11 faces a direction in which it is difficult to operate, as shown in FIG. The pressure reducing valve unit main body 20 is rotated around the second shaft L2 with respect to the second pipe portion 22 of the inflow pipe 10 to adjust the direction of the handle 55 of the water stop valve 11.

Further, for example, when the pipe 4 is installed parallel to the vertical pipe 2 and the pipe 4 is located above the pipe joint 3 attached to the vertical pipe 2, as shown in FIG. The downstream pipe portion 26 of the first pipe portion 21 of the inflow pipe 10 of the pressure reducing valve unit 1 is rotated around the first axis L1 so that the second pipe portion 22 faces upward, and the second pipe portion 22 and the vertical pipe 2 Are parallel. Further, the pressure reducing valve unit main body 20 is rotated around the second shaft L2 with respect to the second pipe portion 22 of the inflow pipe 10 so that the operation unit 57 of the water stop valve 11 can be easily operated. Change the direction of the handle 55. After that, the pipe 4 is connected above the outflow pipe portion 62 of the pressure reducing valve 17.

Also in this case, if the pipe joint 3 attached to the vertical pipe 2 and the pipe 4 are displaced in the circumferential direction around the pipe axis L0 of the vertical pipe 2, the upstream side pipe of the downstream side pipe portion 26 is used. The second pipe portion 22 is tilted with respect to the vertical pipe 2 by adjusting the rotation angle position around the first axis L1 with respect to the portion 25. As a result, the position of the outflow pipe portion 62 of the pressure reducing valve 17 and the pipe 4 in the circumferential direction is aligned, and then the pipe 4 is connected above the outflow pipe portion 62 of the pressure reducing valve 17.

(Action effect)
According to this example, the inflow pipe 10 of the pressure reducing valve unit 1 rotatably connects the downstream side pipe portion 26 with which the second pipe portion 22 communicates to the upstream side pipe portion 25 around the first axis L1. A rotary connection mechanism 30 is provided. Further, the water stop valve connecting mechanism 14 for connecting the second pipe portion 22 of the inflow pipe 10 and the water stop valve 11 makes the water stop valve 11 rotatable around the second axis L2 with respect to the second pipe portion 22. Connecting. Therefore, when the upstream pipe portion 25 of the inflow pipe 10 is connected to the vertical pipe, the pressure reducing valve unit main body 20 including the water stop valve 11 and the pressure reducing valve 17 is rotated around the first axis L1 and around the second axis L2. It becomes rotatable.

Therefore, when the pressure reducing valve unit main body 20 of the pressure reducing valve unit 1 connected to the vertical pipe 2 and the pipe 4 are not arranged in a desired positional relationship, the pressure reducing valve unit main body 20 is rotated around the first axis L1. The positional relationship between the pressure reducing valve unit main body 20 and the pipe 4 connected to the secondary side of the pressure reducing valve unit 1 can be adjusted. This makes it possible to connect the pressure reducing valve unit 1 and the pipe 4 without reattaching the pressure reducing valve unit 1 to the vertical pipe 2 or performing the work of routing the pipe 4. Therefore, even in a narrow space such as a pipe shaft, it becomes easy to connect the pressure reducing valve unit 1 to the pipe 4 located on the secondary side thereof. Further, the pressure reducing valve unit main body 20 rotates around the second axis L2. Therefore, when the pressure reducing valve unit main body 20 is rotated around the first axis L1, the direction of the handle 55 of the water stop valve 11 can be oriented in a direction that is easy to operate.

(Example 2)
FIG. 6 is a perspective view of the pressure reducing valve unit of the second embodiment. FIG. 7 is a cross-sectional view of the inflow pipe 10 of the pressure reducing valve unit of the second embodiment. FIG. 8 is a side view of the cheese constituting the inflow pipe. 9 is a cross-sectional view taken along the line AA of FIG. FIG. 10 is a cross-sectional view taken along the line BB of FIG. The pressure reducing valve unit 1A of this example is installed between the vertical pipe 2 for water supply and the pipe 4 extending to each room, similarly to the pressure reducing valve unit 1 described above. In this example, the water in the vertical pipe 2 is circulated through the pressure reducing valve unit 1A to two pipes, a first pipe 5 for water supply and a second pipe 6 for water supply. Since the pressure reducing valve unit 1A has a configuration corresponding to the pressure reducing valve unit 1 described above, the corresponding configuration is designated by a corresponding reference numeral, and detailed description thereof will be omitted.

As shown in FIG. 6, the pressure reducing valve unit 1A has a first stop that connects the inflow pipe 10, the first water stop valve 12, the second water stop valve 13, and the first water stop valve 12 to the inflow pipe 10. A faucet connecting mechanism 15 and a second faucet connecting mechanism 16 for connecting the second faucet 13 to the inflow pipe 10 are provided. Further, the pressure reducing valve unit 1A is connected to the first pressure reducing valve 18 connected to the side opposite to the inflow pipe 10 of the first water stop valve 12 and to the side opposite to the inflow pipe 10 of the second water stop valve 13. A second pressure reducing valve 19 is provided. The first water stop valve 12 and the first pressure reducing valve 18 constitute the first pressure reducing valve unit main body 20 (1). The second water stop valve 13 and the second pressure reducing valve 19 constitute the second pressure reducing valve unit main body 20 (2). The primary side of the inflow pipe 10 is connected to the vertical pipe 2 via the pipe joint 3. The first pressure reducing valve unit main body 20 (1) and the second pressure reducing valve unit main body 20 (2) are arranged on the secondary side of the inflow pipe 10. The first pipe 5 is connected to the secondary side of the first pressure reducing valve unit main body 20 (1). The second pipe 6 is connected to the secondary side of the second pressure reducing valve unit main body 20 (2). That is, the first pipe 5 is connected to the secondary side of the first pressure reducing valve 18, and the second pipe 6 is connected to the secondary side of the second pressure reducing valve 19.

(Inflow pipe)
As shown in FIGS. 6 and 7, the inflow pipe 10 communicates with the first pipe portion 21 extending in the first axis direction X along the first axis L1 and intersects the first axis L1. A third pipe portion 22 extending in the second axis direction Y along the second shaft L2 and a third pipe portion 22 communicating with the first pipe portion 21 and intersecting the first shaft L1.
A third pipe portion 23 extending in the third axial direction Z along the axis L3 is provided. The third pipe portion 23 and the first pipe portion 21 communicate with each other via a curved pipe portion 24 continuous with the end portion of the first pipe portion 21 opposite to the vertical pipe 2. The first axis L1 and the second axis L2 are orthogonal to each other. Therefore, as shown in FIG. 7, the first pipe axis L21 of the first pipe portion 21 and the second pipe shaft L22 of the second pipe portion 22 are orthogonal to each other. Further, the first axis L1 and the third axis L3 are orthogonal to each other. Therefore, the first pipe axis L21 of the first pipe portion 21 and the third pipe shaft L23 of the third pipe portion 23 are orthogonal to each other.

The first pipe portion 21 is coaxial with the upstream pipe portion 25 extending in the first axial direction X, the first pipe portion 27 extending in the first axial direction X coaxially with the upstream pipe portion 25, and coaxial with the first pipe portion 27. The second pipe portion 28 extending in the first axial direction X, the fastening mechanism 7 for fastening the upstream side pipe portion 25 and the first pipe portion 27, and the second pipe portion 28 with respect to the first pipe portion 27. It is provided with a rotary connection mechanism 30 that is rotatably connected around one axis L1. The upstream side pipe portion 25 is connected to the vertical pipe 2 via the pipe joint 3. The water flowing from the vertical pipe 2 into the inflow pipe 10 flows through the upstream side pipe portion 25, the first pipe portion 27, and the second pipe portion 28 in this order. The second pipe portion 22 communicates with the first pipe portion 27. That is, the second pipe portion 22 projects in the second axial direction Y from the middle of the first axial direction X of the first pipe portion 27. Here, as shown in FIGS. 7 and 8, the first pipe portion 27 and the second pipe portion 22 are made of cheese 9 (piping member). The third pipe portion 23 communicates with the second pipe portion 28 via the curved pipe portion 24. The second pipe portion 22, the curved pipe portion 24, and the second pipe portion 28 are made of an elbow 8. As shown in FIG. 7, the elbow 8 curves in the first axial direction X toward the second direction X2 in the third axial direction Z. The elbow 8 includes a protrusion 8a protruding from the curved tube portion 24 to the outer peripheral side.

As shown in FIG. 7, the upstream side pipe portion 25 includes an annular flange portion 25a extending toward the outer peripheral side at the end portion of the second direction X2. The first pipe portion 27 is provided with a male screw 27a on the outer peripheral surface of the end portion of the first direction X1. Further, the first pipe portion 27 includes a notch portion 27b cut out from the first direction X1 and the outer peripheral side at the end of the first direction X1. The fastening mechanism 7 includes an annular packing 74 arranged in the notch 37 and interposed between the upstream pipe portion 25 and the first pipe portion 27, and a cap nut 77. The cap nut 77 has a cap portion 77a locked to the flange portion 25a of the upstream side pipe portion 25 from the side of the first direction X1 and a nut portion 77b screwed into the male screw 27a of the first pipe portion 27. Be prepared.

The rotary connection mechanism 30 has the same configuration as the rotary connection mechanism 30 of the pressure reducing valve unit 1 of the first embodiment. That is, the rotary connection mechanism 30 is an end portion of the large diameter cylinder portion 33 provided at the end portion of the first pipe portion 27 in the second direction X2 and the end portion of the second pipe portion 28 in the first direction X1 and has a large diameter. The insertion cylinder portion 34 inserted on the inner peripheral side of the cylinder portion 33, the annular packing 35 interposed between the large diameter cylinder portion 33 and the insertion cylinder portion 34, and the large diameter cylinder portion 33 and the insertion cylinder portion 34. A ring-shaped member 36 interposed between the two is provided.

Here, as shown in FIGS. 7, 9, and 10, a part of the water flowing through the first pipe portion 27 is on the inner peripheral surface of the cheese 9 constituting the first pipe portion 27 and the second pipe portion 22. A pair of guide protrusions 75a and 75b are provided to guide the second pipe portion 22. More specifically, on the inner peripheral surface of the inner peripheral surface of the cheese 9, the second tube portion 22 extending along the first tube axis L21 and the second axis L2 of the first tube portion 27 extending along the first axis L1. One side guide protrusion 75a is provided on one side of the virtual surface S (see FIGS. 9 and 10) including the second pipe shaft L22, and the other side guide protrusion is provided on the other side of the virtual surface S. It is provided. The one-side guide protrusion 75a and the other-side guide protrusion 75b have a symmetrical shape with the virtual surface S interposed therebetween.

As shown in FIG. 7, each of the guide protrusions 75a and 75b is an end portion of the second pipe portion 22 on the side of the first pipe portion 27 and is located in the second direction X2 with respect to the second pipe shaft L22. It curves in the first direction X1 from H toward the side of the first pipe portion 27. The guide protrusions 75a and 75b taper from the region H toward the tip end side of the first direction X1. The first of the guide protrusions 75a and 75b
The end 75c in the direction X1 is located in the first direction X1 with respect to the second pipe axis L22. In this example, the ends of the guide protrusions 75a and 75b in the first direction X1 are located in the first direction X1 with respect to the second pipe shaft L22. The end 75c of the first direction X1 of each of the guide protrusions 75a and 75b is located in the first direction X1 with respect to the end of the opening of the second pipe portion 22 on the outer peripheral surface of the first pipe portion 27 in the first direction X1. Further, as shown in FIG. 7, the end 75c of the first direction X1 of each of the guide protrusions 75a and 75b is the first pipe axis L21 of the first pipe portion 27 when viewed from the direction perpendicular to the virtual surface S. It is located on the upper side or on the side of the first pipe portion 27 slightly away from the second pipe portion 22 (the side opposite to the second pipe portion 22) from the first pipe shaft L21. Here, as shown in FIG. 10, each of the guide protrusions 75a and 75b has a mountain shape in which the cross section cut in the direction orthogonal to the extending direction has a gentle arc contour.

As shown in FIGS. 9 and 10, the one-side guide protrusion 75a and the other-side guide protrusion 75b are continuous in a region located in the second direction X2 of the second pipe portion 22 with respect to the second pipe shaft L22. ing. As shown in FIGS. 6, 8 and 10, the cheese 9 is provided with a recess 76 at a position overlapping the guide protrusions 75a and 75b on the outer peripheral surface thereof. The recess 76 is an end portion of the second pipe portion 22 on the side of the first pipe portion 27 and is located on the side of the first pipe portion 27 from the outer peripheral surface of the region H located in the second direction X2 with respect to the second pipe shaft L22. Curves in the first direction X1 toward.

Here, as shown in FIG. 7, the second inner diameter dimension D2 of the elbow 8 is shorter than the first inner diameter dimension D1 of the first pipe portion 27 of the cheese 9. In other words, the inner diameters of the second pipe portion 28, the curved pipe portion 24, and the third pipe portion 23 are smaller than the inner diameter of the first pipe portion 27.

Next, the first stopcock 12 and the second stopcock 13 are the same as the stopcock 11 of the pressure reducing valve unit 1 described above. As shown in FIG. 6, the first stopcock 12 is connected to the second pipe portion 22 of the inflow pipe 10 via the first stopcock connection mechanism 15. The second stopcock 13 is connected to the third pipe portion 23 of the inflow pipe 10 via the second stopcock connection mechanism 16.

The first stopcock connection mechanism 15 rotatably connects the first stopcock 12 to the second pipe portion 22 around the second axis L2. The second stopcock connection mechanism 16 rotatably connects the second stopcock 13 to the third pipe portion 23 around the third axis L3. The first stopcock connection mechanism 15 and the second stopcock connection mechanism 16 have the same configuration as the stopcock connection mechanism 14 of the pressure reducing valve unit 1 described above. That is, as shown in FIG. 7, the first stopcock connection mechanism 15 includes a large-diameter cylinder portion 41 provided at an end of the second pipe portion 22 opposite to the first pipe portion 27, and a first one. The insertion tube portion 51a which is the tip portion of the inflow pipe portion 51 of the water stopcock 12 and is inserted into the inner peripheral side of the large diameter cylinder portion 41, and the insertion cylinder portion 51a in the inflow pipe portion 51 of the first water stopcock 12. An annular faucet side flange portion 51b protruding from a position adjacent to the outer peripheral side, two annular packing 44s interposed between the large diameter cylinder portion 41 and the insertion cylinder portion 51a, and a large diameter cylinder portion. A holding mechanism 45 for holding the 41 and the insertion tube portion 51a of the water stop valve 11 so as not to be separated in the second axis direction Y and rotatably around the second axis L2 is provided. Similarly, in the second stopcock connection mechanism 16, the large-diameter cylinder portion 41 provided at the end of the third pipe portion 23 opposite to the second pipe portion 28 and the inflow of the second stopcock 13 are provided. The outer circumference of the insertion tube portion 51a, which is the tip portion of the tube portion 51 and is inserted into the inner peripheral side of the large-diameter tube portion 41, and the inflow pipe portion 51 of the second stopcock 13 from a position adjacent to the insertion tube portion 51a. An annular faucet side flange portion 51b protruding to the side, two annular packings 44 interposed between the large diameter cylinder portion 41 and the insertion cylinder portion 51a, a large diameter cylinder portion 41, and a water stop faucet. A holding mechanism 45 for holding the insertion tube portion 51a of 11 so as not to be separated in the third axis direction Z and rotatably around the third axis L3 is provided.

The first pressure reducing valve 18 and the second pressure reducing valve 19 are the same as the pressure reducing valve 17 of the pressure reducing valve unit 1 described above. As shown in FIG. 6, the inflow pipe portion 61 of the first pressure reducing valve 18 is connected to the outflow pipe portion 52 of the first water stop valve 12 via the connection mechanism 58. A first pipe 5 toward each room is connected to the outflow pipe portion 62 of the first pressure reducing valve 18. The inflow pipe portion 61 of the second pressure reducing valve 19 is connected to the outflow pipe portion 52 of the second water stop valve 13 via the connection mechanism 58. A second pipe 6 heading to each room is connected to the outflow pipe portion 62 of the second pressure reducing valve 19.

(Connection between the vertical pipe and the water pipe via the pressure reducing valve unit)
FIG. 11 is an explanatory diagram of an installed state in which the direction of the second pressure reducing valve unit main body 20 (2) is changed in the pressure reducing valve unit 1A of the second embodiment. FIG. 12 is an explanatory diagram of another installation state in which the direction of the second pressure reducing valve unit main body 20 (2) is changed in the pressure reducing valve unit 1A of the second embodiment.

First, as shown in FIG. 6, the first pipe 5 and the second pipe 6 are installed in parallel with the vertical pipe 2, and the first pipe 5 and the second pipe 6 are installed more than the pipe joint 3 attached to the vertical pipe 2. 2 When the pipe 6 is located below, when the pressure reducing valve unit 1A is connected to the vertical pipe 2, the second pipe portion 22 of the inflow pipe 10 is in a state of facing downward. Further, the second pipe portion 28 of the inflow pipe 10 is rotated around the first axis L1 with respect to the first pipe portion 27, and the third pipe portion 23 is directed downward. After that, the first pipe 5 is connected below the outflow pipe portion 62 of the first pressure reducing valve 18, and the second pipe 6 is connected below the outflow pipe portion 62 of the second pressure reducing valve 19.

Here, when the operation unit 57 of the first water stop valve 12 or the operation unit 57 of the second water stop valve 13 faces a direction in which it is difficult to operate, the second pipe portion 22 of the inflow pipe 10 is directed. The direction of the handle 55 of the first water stop valve 12 is adjusted by rotating the first pressure reducing valve unit main body 20 (1) around the second axis L2. Alternatively, the second pressure reducing valve unit main body 20 (2) is rotated around the third axis L3 with respect to the third pipe portion 23 of the inflow pipe 10 to adjust the direction of the handle 55 of the second water stop valve 13.

Further, when the pipe joint 3 attached to the vertical pipe 2 and the second pipe 6 are displaced in the circumferential direction around the pipe axis L0 of the vertical pipe 2, the second pipe is as shown in FIG. The rotation angle position around the first axis L with respect to the first pipe portion 27 of the portion 28 is adjusted to incline the third pipe portion 23 with respect to the vertical pipe 2. As a result, the positions of the outflow pipe portion 62 of the second pressure reducing valve 19 and the second pipe 6 are brought closer to each other in the circumferential direction, and then the second pipe 6 is connected below the outflow pipe portion 62 of the second pressure reducing valve 19. do.

Further, the first pipe 5 and the second pipe 6 are installed in parallel with the vertical pipe 2, and the first pipe 5 is located below the pipe joint 3 attached to the vertical pipe 2, and the second pipe 5 is installed. When the pipe 6 is located above the pipe joint 3 attached to the vertical pipe 2, the pressure reducing valve unit 1A is connected to the vertical pipe 2 and the second pipe portion of the inflow pipe 10 is connected as shown in FIG. 22 is in a state of facing downward. Further, the second pipe portion 28 of the inflow pipe 10 is rotated around the first axis L1 with respect to the first pipe portion 27, and the third pipe portion 23 is directed upward. After that, the first pipe 5 is connected below the outflow pipe portion 62 of the first pressure reducing valve 18, and the second pipe 6 is connected above the outflow pipe portion 62 of the second pressure reducing valve 19.

Here, when the vertical pipe 2, the first pipe 5, and the second pipe 6 are connected via the pressure reducing valve unit 1A, the operation unit 57 of the first water stop valve 12 or the operation of the second water stop valve 13 is operated. When the portion 57 is oriented in a direction that is difficult to operate, the first pressure reducing valve unit main body 20 (1) is rotated around the second shaft L2 with respect to the second pipe portion 22 of the inflow pipe 10 to stop the first stop. Adjust the orientation of the handle 55 of the faucet 12. Alternatively, the second pressure reducing valve unit main body 20 (2) is rotated around the third axis L3 with respect to the third pipe portion 23 of the inflow pipe 10 to adjust the direction of the handle 55 of the second water stop valve 13. In the example shown in FIG. 12, the second pressure reducing valve unit main body 20 (2) is rotated by 180 ° around the first axis L1 from the state shown in FIG. 6, and then the second pressure reducing valve unit main body 20 (2) is further rotated. Is rotated 180 ° around the third axis L3.

(Action effect)
According to this example, the inflow pipe 10 of the pressure reducing valve unit 1A has a second pipe portion 28 with which the third pipe portion 23 communicates, and a first axis with respect to the first pipe portion 27 with which the second pipe portion 22 communicates. A rotation connection mechanism 30 that can rotate around L1 is provided. Further, the first stopcock connecting mechanism 15 for connecting the second pipe portion 22 and the first stopcock 12 of the inflow pipe 10 has the first stopcock 12 as the second axis with respect to the second pipe portion 22. Connect rotatably around L2. Further, the second stopcock connecting mechanism 16 for connecting the third pipe portion 23 and the second stopcock 13 of the inflow pipe 10 has the second stopcock 13 as the third axis with respect to the third pipe portion 23. Connect rotatably around L3. Therefore, when the first pipe portion 27 of the inflow pipe 10 is connected to the vertical pipe 2, the first pressure reducing valve unit main body 20 (1) including the first water stop valve 12 and the first pressure reducing valve 18 is second. It can rotate around the axis L2. Further, the second pressure reducing valve unit main body 20 (2) including the second water stop valve 13 and the second pressure reducing valve 19 can rotate around the first axis L1 and around the third axis L3.

Therefore, it is desirable that the second pressure reducing valve unit main body 20 (2) of the pressure reducing valve unit 1A connected to the vertical pipe 2 and the second pipe 6 connected to the secondary side of the second pressure reducing valve unit main body 20 (2). If they are not arranged in the positional relationship of, the second pressure reducing valve unit main body 20 (2) is rotated around the first axis L1 to form the second pressure reducing valve unit main body 20 (2) and the second pipe 6. The positional relationship of can be adjusted. Therefore, even if the pressure reducing valve unit 1A and the second pipe 6 are displaced from the desired positional relationship, these connections can be easily made. As a result, the second pressure reducing valve unit main body 20 (2) and the pipe 4 can be connected without reattaching the pressure reducing valve unit 1A to the vertical pipe 2 or performing the routing work of the second pipe 6. Can be done.

Further, the second pressure reducing valve unit main body 20 (2) rotates around the third axis L3. Therefore, when the second pressure reducing valve unit main body 20 (2) is rotated around the first shaft L1, the second pressure reducing valve unit main body 20 (2) is rotated around the third shaft L3, and the second water stop cock is used. The direction of the handle 55 of 13 can be oriented in a direction that is easy to operate. Further, since the first pressure reducing valve unit main body 20 (1) can be rotated around the second axis L2, the direction of the handle 55 of the first water stop valve 12 can be directed in a direction that is easy to operate. ..

Further, in this example, the first tube portion 27 and the second tube portion 22 are one cheese 9. In the cheese 9, the second tube portion 22 projects in the second axial direction Y from the middle of the first axial direction X of the first tube portion 27. On the inner peripheral surface of the cheese 9, the first pipe shaft L21 of the first pipe portion 27 extending along the first shaft L1 and the second pipe shaft L22 of the second pipe portion 22 extending along the second shaft L2 are provided. A pair of guide protrusions 75a and 75b for guiding a part of the water flowing through the first pipe portion 27 to the second pipe portion 22 are provided on one side and the other side of the virtual surface S including the virtual surface S. Therefore, a part of the water flowing through the first pipe portion 27 flows into the second pipe portion 22 along the one-side guide protrusion 75a and the other-side guide protrusion 75b. Therefore, the water flowing from the inflow pipe 10 is passed through the second pipe portion 22 and the first pressure reducing valve unit main body 20 (1) to flow to the first pipe 5, and the water flowing from the inflow pipe 10 is flown to the third pipe. It can flow to the second pipe 6 via the portion 23 and the second pressure reducing valve unit main body 20 (2). Further, if such a pair of guide protrusions 75a and 75b is provided, it becomes easy to secure the flow rate of water flowing to the first pipe 5 via the first pressure reducing valve unit main body 20 (1).

Further, each of the guide protrusions 75a and 75b is an end portion of the second pipe portion 22 on the side of the first pipe portion 27 and is located in the second direction X2 from the second pipe shaft L22 to the first pipe. It curves in the first direction X1 toward the side of the portion 27. The end of the guide protrusion in the first direction X1 is located in the first direction X1 with respect to the second pipe shaft L22. Therefore, it is easy to guide the water flowing through the first pipe portion 27 to the second pipe portion 22 by the guide protrusions 75a and 75b.

Further, in this example, the one-sided guide protrusion 75a provided on one side of the virtual surface S and the other-side guide protrusion 75b provided on the other side of the virtual surface S are the second in the second pipe portion 22. It is continuous in the region H located in the second direction X2 from the two pipe shaft L22. Therefore, the first pipe portion 27 is formed by a portion in which the pair of guide protrusions 75a and 75b and the pair of guide protrusions 75a and 75b, which are composed of the one-side guide protrusion 75a and the other-side guide protrusion 75b, are continuous. The flowing water can be guided to the second pipe portion 22. Therefore, it becomes easier to secure the flow rate of the water flowing to the first pipe 5 via the first pressure reducing valve unit main body 20 (1).

Further, in this example, the inner diameter of the second pipe portion 28 (inner diameter dimension D2) is smaller than the inner diameter of the first pipe portion 27 (inner diameter dimension D1). Therefore, the water flowing through the first pipe portion 27 tends to flow into the second pipe portion 22. Therefore, it becomes easier to secure the flow rate of the water flowing to the first pipe 5 via the first pressure reducing valve unit main body 20 (1).

(Example 3)
FIG. 13 is a perspective view of the pressure reducing valve unit of the third embodiment. FIG. 14 is a cross-sectional view of the inflow pipe 10 of the pressure reducing valve unit of the third embodiment. The pressure reducing valve unit 1B of this example is installed between the vertical pipe 2 for water supply and the pipe extending to each room, similarly to the pressure reducing valve units 1 and 1A described above. In this example, the water in the vertical pipe 2 is circulated through the pressure reducing valve unit 1B to two systems, the first pipe 5 for water supply and the second pipe 6 for water supply. Since the pressure reducing valve unit 1B has a configuration corresponding to the pressure reducing valve unit 1A described above, the corresponding configuration is designated by a corresponding reference numeral, and detailed description thereof will be omitted.

As shown in FIG. 13, the pressure reducing valve unit 1B is a first stop that connects the inflow pipe 10, the first stopcock 12, the second stopcock 13, and the first stopcock 12 to the inflow pipe 10. A faucet connecting mechanism 15 and a second faucet connecting mechanism 16 for connecting the second faucet 13 to the inflow pipe 10 are provided. Further, the pressure reducing valve unit 1B is connected to the first pressure reducing valve 18 connected to the side opposite to the inflow pipe 10 of the first water stop valve 12 and to the side opposite to the inflow pipe 10 of the second water stop valve 13. A second pressure reducing valve 19 is provided. The first water stop valve 12 and the first pressure reducing valve 18 constitute the first pressure reducing valve unit main body 20 (1). The second water stop valve 13 and the second pressure reducing valve 19 constitute the second pressure reducing valve unit main body 20 (2). The primary side of the inflow pipe 10 is connected to the vertical pipe 2 via the pipe joint 3. The first pressure reducing valve unit main body 20 (1) and the second pressure reducing valve unit main body 20 (2) are arranged on the secondary side of the inflow pipe 10. The first pipe 5 is connected to the secondary side of the first pressure reducing valve unit main body 20 (1). The second pipe 6 is connected to the secondary side of the second pressure reducing valve unit main body 20 (2). That is, the first pipe 5 is connected to the secondary side of the first pressure reducing valve 18, and the second pipe 6 is connected to the secondary side of the second pressure reducing valve 19.

(Inflow pipe)
As shown in FIGS. 13 and 14, the inflow pipe 10 communicates with the first pipe portion 21 and intersects the first shaft L1 with the first pipe portion 21 extending in the first axis direction X along the first shaft L1. In the second pipe portion 22 extending in the second axis direction Y along the second axis L2 and in the third axis direction Z along the third axis L3 communicating with the first pipe portion 21 and intersecting the first shaft L1. A third pipe portion 23 extending is provided. The third pipe portion 23 and the first pipe portion 27 communicate with each other via a curved pipe portion 24 continuous with the end portion of the first pipe portion 27 opposite to the vertical pipe 2. The first axis L1 and the second axis L2 are orthogonal to each other. Therefore, the first pipe axis L21 of the first pipe portion 27 and the second pipe shaft L22 of the second pipe portion 22 are orthogonal to each other. Further, the first axis L1 and the third axis L3 are orthogonal to each other. Therefore, the first pipe axis L21 of the first pipe portion 27 and the third pipe shaft L23 of the third pipe portion 23 are orthogonal to each other.

The first pipe portion 27 is coaxial with the upstream pipe portion 25 extending in the first axial direction X, the first pipe portion 27 extending in the first axial direction X coaxially with the upstream pipe portion 25, and coaxial with the first pipe portion 27. A second pipe portion 28 extending in the first axis direction X, a first rotation connection mechanism 31 for rotatably connecting the first pipe portion 27 to the upstream pipe portion 25 around the first axis L1, and a second. A second rotation connection mechanism 32 for rotatably connecting the pipe portion 28 to the first pipe portion 27 around the first axis L1 is provided. The upstream side pipe portion 25 is connected to the vertical pipe 2 via the pipe joint 3. The water flowing from the vertical pipe 2 to the inflow pipe 10 is the upstream side pipe portion 25, the first
It flows through the pipe portion 27 and the second pipe portion 28 in this order. The second pipe portion 22 communicates with the first pipe portion 27. That is, the second pipe portion 22 projects in the second axial direction Y from the middle of the first axial direction X of the first pipe portion 27. Here, the first pipe portion 27 and the second pipe portion 22 are made of cheese 9 (piping member). The third pipe portion 23 communicates with the second pipe portion 28 via the curved pipe portion 24. The second pipe portion 22, the curved pipe portion 24, and the second pipe portion 28 are made of an elbow 8. As shown in FIG. 14, the elbow 8 curves in the first axial direction X toward the second direction X2 in the third axial direction Z. The elbow 8 includes a protrusion 8a protruding from the curved tube portion 24 to the outer peripheral side.

The first rotary connection mechanism 31 that connects the upstream pipe portion 25 and the first pipe portion 27 has the same configuration as the rotary connection mechanism 30 of the pressure reducing valve units 1 and 1A of the first and second embodiments. That is, as shown in FIG. 14, the upstream side pipe portion 25 includes a large-diameter tubular portion 33 having a diameter larger than that of the portion on the side of the first direction X1 at the end portion of the second direction X2. The first rotation connection mechanism 31 is inserted into the large-diameter cylinder portion 33 of the upstream side pipe portion 25 and the end portion of the first pipe portion 27 in the first direction X1 and on the inner peripheral side of the large-diameter cylinder portion 33. An annular packing 35 interposed between the insertion cylinder portion 34, the large diameter cylinder portion 33 and the insertion cylinder portion 34, and a ring-shaped member 36 interposed between the large diameter cylinder portion 33 and the insertion cylinder portion 34. To prepare for. Further, the second rotary connection mechanism 32 that connects the first pipe portion 27 and the second pipe portion 28 also has the same configuration as the rotary connection mechanism 30 of the pressure reducing valve units 1 and 1A of the first and second embodiments. That is, the second rotation connection mechanism 32 is a large-diameter tubular portion 33 provided at the end portion of the first pipe portion 27 in the second direction X2, and an end portion of the second pipe portion 28 in the first direction X1. The insertion tube portion 34 inserted on the inner peripheral side of the large diameter tube portion 33, the annular packing 35 interposed between the large diameter tube portion 33 and the insertion tube portion 34, and the large diameter tube portion 33 and the insertion tube portion. A ring-shaped member 36 interposed between the 34 and the ring-shaped member 36 is provided.

Here, on the inner peripheral surface of the cheese 9, a part of the water flowing through the first pipe portion 27 is guided to the second pipe portion 22 in the same manner as the inner peripheral surface of the cheese 9 of the pressure reducing valve unit 1A of the second embodiment. A pair of guide protrusions 75a and 75b are provided. That is, as shown in FIGS. 14, 9, and 10, the inner peripheral surface of the cheese 9 is along the first tube axis L21 and the second axis L2 of the first tube portion 27 extending along the first axis L1. One side guide protrusion 75a is provided on one side of the virtual surface S including the second pipe shaft L22 of the second pipe portion 22 extending, and the other side guide protrusion 75b is provided on the other side of the virtual surface S. ing. Each of the guide protrusions 75a and 75b is an end portion of the second pipe portion 22 on the side of the first pipe portion 27, and is located in the second direction X2 from the second pipe shaft L22 from the region H to the first pipe portion 27. It curves in the first direction X1 toward the side of. The guide protrusions 75a and 75b taper from the region H toward the tip end side. The one-side guide protrusion 75a and the other-side guide protrusion 75b are continuous in the region H. Here, as shown in FIG. 13, the cheese 9 is provided with a recess 76 at a position overlapping the guide protrusions 75a and 75b on the outer peripheral surface thereof. The recess 76 is an end portion of the second pipe portion 22 on the side of the first pipe portion 27 and is located in the second direction X2 from the second pipe shaft L22 toward the side of the first pipe portion 27. It curves in the first direction X1.

Further, as shown in FIG. 14, the second inner diameter dimension D2 of the elbow 8 is shorter than the first inner diameter dimension D1 of the first pipe portion 27 of the cheese 9. In other words, the inner diameters of the second pipe portion 28, the curved pipe portion 24, and the third pipe portion 23 are smaller than the inner diameter of the first pipe portion 27.

Next, the first stopcock 12 and the second stopcock 13 are the same as the stopcocks 11 of the pressure reducing valve units 1 and 1A of Examples 1 and 2. The inflow pipe portion 51 of the first stopcock 12 is connected to the second pipe portion 22 of the inflow pipe 10 via the first stopcock connection mechanism 15. The inflow pipe portion 51 of the second stopcock 13 is connected to the third pipe portion 23 of the inflow pipe 10 via the second stopcock connection mechanism 16.

The first stopcock connection mechanism 15 rotatably connects the first stopcock 12 to the second pipe portion 22 around the second axis L2. The second stopcock connection mechanism 16 rotatably connects the second stopcock 13 to the third pipe portion 23 around the third axis L3. The first stopcock connection mechanism 15 and the second stopcock connection mechanism 16 have the same configuration as the stopcock connection mechanism 14 of the pressure reducing valve unit 1 of the first embodiment. That is, the first stopcock connection mechanism 15 has a large-diameter cylinder portion 41 provided at an end of the second pipe portion 22 opposite to the first pipe portion 27, and an inflow pipe of the first stopcock 12. The insertion tube portion 51a, which is the tip portion of the portion 51 and is inserted into the inner peripheral side of the large-diameter tube portion 41, and the outer peripheral side from the position adjacent to the insertion tube portion 51a in the inflow pipe portion 51 of the first stopcock 12. An annular faucet side flange portion 51b protruding from the faucet, two annular packings 44 interposed between the large diameter cylinder portion 41 and the insertion cylinder portion 51a, the large diameter cylinder portion 41, and the water stop faucet 11. A holding mechanism 45 that cannot be separated from the insertion tube portion 51a in the second axis direction Y and is rotatably held around the second axis L2 is provided. Similarly, in the second stopcock connection mechanism 16, the large-diameter cylinder portion 41 provided at the end of the third pipe portion 23 opposite to the second pipe portion 28 and the inflow of the second stopcock 13 are provided. The outer circumference of the insertion tube portion 51a, which is the tip portion of the tube portion 51 and is inserted into the inner peripheral side of the large-diameter tube portion 41, and the inflow pipe portion 51 of the second stopcock 13 from a position adjacent to the insertion tube portion 51a. An annular faucet side flange portion 51b protruding to the side, two annular packings 44 interposed between the large diameter cylinder portion 41 and the insertion cylinder portion 51a, a large diameter cylinder portion 41, and a water stop faucet. A holding mechanism 45 for holding the insertion tube portion 51a of 11 so as not to be separated in the third axis direction Z and rotatably around the third axis L3 is provided.

The first pressure reducing valve 18 and the second pressure reducing valve 19 are the same as the pressure reducing valve 17 of the pressure reducing valve unit 1 of the first embodiment. The inflow pipe portion 61 of the first pressure reducing valve 18 is connected to the outflow pipe portion 52 of the first water stop valve 12 via the connection mechanism 58. A first pipe 5 for water supply to each room is connected to the outflow pipe portion 62 of the first pressure reducing valve 18. The inflow pipe portion 61 of the second pressure reducing valve 19 is connected to the outflow pipe portion 52 of the second water stop valve 13 via the connection mechanism 58. A second pipe 6 for water supply to each room is connected to the outflow pipe portion 62 of the second pressure reducing valve 19.

(Connection between the vertical pipe and the water pipe via the pressure reducing valve unit)
FIG. 15 is an explanatory diagram of an installed state in which the direction of the second pressure reducing valve unit main body 20 (2) is changed in the pressure reducing valve unit 1B of the third embodiment. FIG. 16 is an explanatory diagram of another installation state in which the direction of the second pressure reducing valve unit main body 20 (2) is changed in the pressure reducing valve unit 1B of the third embodiment.

First, as shown in FIG. 13, the first pipe 5 and the second pipe 6 are installed in parallel with the vertical pipe 2, and the first pipe 5 and the second pipe 6 are attached to the vertical pipe 2. When it is located below the joint 3, the pressure reducing valve unit 1B is connected to the vertical pipe 2, and the first pipe portion 27 of the inflow pipe 10 is rotated around the first axis L1 with respect to the upstream pipe portion 25. The second pipe portion 22 is turned downward. Further, the second pipe portion 28 of the inflow pipe 10 is rotated around the first axis L1 with respect to the first pipe portion 27, and the third pipe portion 23 is directed downward. After that, the first pipe 5 is connected below the outflow pipe portion 62 of the first pressure reducing valve 18, and the second pipe 6 is connected below the outflow pipe portion 62 of the second pressure reducing valve 19.

Here, when the operation unit 57 of the first water stop valve 12 or the operation unit 57 of the second water stop valve 13 faces a direction in which it is difficult to operate, the second pipe portion 22 of the inflow pipe 10 is directed. The direction of the handle 55 of the water stop valve 11 is adjusted by rotating the first pressure reducing valve unit main body 20 (1) around the second axis L2. Alternatively, the second pressure reducing valve unit main body 20 (2) is rotated around the third axis L3 with respect to the third pipe portion 23 of the inflow pipe 10 to adjust the direction of the handle 55 of the water stop valve 11.

Further, although not shown, if the pipe joint 3 attached to the vertical pipe 2 and the second pipe 6 are displaced in the circumferential direction around the pipe axis L0 of the vertical pipe 2, the second pipe portion is used. The position of the rotation angle around the first axis L1 with respect to the first pipe portion 27 of 28 is adjusted so that the third pipe portion 23 is tilted with respect to the vertical pipe 2. As a result, the position of the outflow pipe portion 62 of the second pressure reducing valve 19 and the second pipe 6 in the circumferential direction is aligned, and then the second pipe 6 is connected below the outflow pipe portion 62 of the second pressure reducing valve 19. .. Similarly, the pipe joint 3 attached to the vertical pipe 2 and the first pipe 5 are the pipe shaft L of the vertical pipe 2.
If there is a deviation in the circumferential direction around 0, adjust the rotation angle position around the 1st axis L1 with respect to the upstream pipe portion 25 of the 1st pipe portion 27, and set the 2nd pipe portion 22 with respect to the vertical pipe 2. Tilt. As a result, the position of the outflow pipe portion 62 of the first pressure reducing valve 18 and the first pipe 5 in the circumferential direction is aligned, and then the first pipe 5 is connected below the outflow pipe portion 62 of the second pressure reducing valve 19. ..

Further, the first pipe 5 and the second pipe 6 are installed in parallel with the vertical pipe 2, and the first pipe 5 is located below the pipe joint 3 attached to the vertical pipe 2, and the second pipe 5 is installed. When the pipe 6 is located above the pipe joint 3 attached to the vertical pipe 2, the pressure reducing valve unit 1B is connected to the vertical pipe 2 and the first pipe portion of the inflow pipe 10 is connected as shown in FIG. The 27 is rotated around the first axis L1 with respect to the upstream pipe portion 25, and the second pipe portion 22 is directed downward. Further, the second pipe portion 28 of the inflow pipe 10 is rotated around the first axis L1 with respect to the first pipe portion 27, and the third pipe portion 23 is directed upward. After that, the first pipe 5 is connected below the outflow pipe portion 62 of the first pressure reducing valve 18, and the second pipe 6 is connected above the outflow pipe portion 62 of the second pressure reducing valve 19.

Here, when the vertical pipe 2 is connected to the first pipe 5 and the second pipe 6 via the pressure reducing valve unit 1B, the operation unit 57 of the first water stop valve 12 or the operation of the second water stop valve 13 is operated. When the portion 57 faces in a direction that is difficult to operate, the first pressure reducing valve unit main body 20 (1) is rotated around the second shaft L2 with respect to the second pipe portion 22 of the inflow pipe 10 to stop the faucet. Adjust the orientation of the handle 55 of 11. Alternatively, the second pressure reducing valve unit main body 20 (2) is rotated around the third axis L3 with respect to the third pipe portion 23 of the inflow pipe 10 to adjust the direction of the handle 55 of the water stop valve 11. In the state shown in FIG. 15, after the second pressure reducing valve unit main body 20 (2) is rotated by 180 ° around the first axis L1, the second pressure reducing valve unit main body 20 (2) is further rotated around the third axis L3. It is rotated 180 °.

Further, the first pipe 5 and the second pipe 6 are installed in parallel with the vertical pipe 2, and the first pipe 5 is located above the pipe joint 3 attached to the vertical pipe 2, and the second pipe 5 is installed. When the pipe 6 is located above the pipe joint 3 attached to the vertical pipe 2, the pressure reducing valve unit 1B is connected to the vertical pipe 2 and the first pipe portion of the inflow pipe 10 is connected as shown in FIG. The 27 is rotated around the first axis L1 with respect to the upstream pipe portion 25, and the second pipe portion 22 is directed upward. Further, the second pipe portion 28 of the inflow pipe 10 is rotated around the first axis L1 with respect to the first pipe portion 27, and the third pipe portion 23 is directed upward. After that, the first pipe 5 is connected above the outflow pipe portion 62 of the first pressure reducing valve 18, and the second pipe 6 is connected above the outflow pipe portion 62 of the second pressure reducing valve 19.

Here, when the vertical pipe 2 is connected to the first pipe 5 and the second pipe 6 via the pressure reducing valve unit 1B, the operation unit 57 of the first water stop valve 12 or the operation of the second water stop valve 13 is operated. When the portion 57 faces in a direction that is difficult to operate, the first pressure reducing valve unit main body 20 (1) is rotated around the second shaft L2 with respect to the second pipe portion 22 of the inflow pipe 10 to stop the faucet. Adjust the orientation of the handle 55 of 11. Alternatively, the second pressure reducing valve unit main body 20 (2) is rotated around the third axis L3 with respect to the third pipe portion 23 of the inflow pipe 10 to adjust the direction of the handle 55 of the water stop valve 11. In the state shown in FIG. 16, after the first pressure reducing valve unit main body 20 (1) is rotated by 180 ° around the first axis L1, the first pressure reducing valve unit main body 20 (1) is further rotated around the second axis L2. It is rotated 180 °. Further, after the second pressure reducing valve unit main body 20 (2) is rotated by 180 ° around the first axis L1, the second pressure reducing valve unit main body 20 (2) is further rotated by 180 ° around the third axis L3. There is.

(Action effect)
According to this example, the inflow pipe 10 of the pressure reducing valve unit 1B allows the first pipe portion 27 with which the second pipe portion 22 communicates to rotate about the first axis L1 with respect to the upstream side pipe portion 25. A one-turn connection mechanism 31 is provided. Further, the inflow pipe 10 includes a second rotation connection mechanism 32 that allows the second pipe portion 28 through which the third pipe portion 23 communicates to rotate around the first axis L1 with respect to the first pipe portion 27. Moreover,
The first stopcock connection mechanism 15 for connecting the second pipe portion 22 and the first stopcock 12 of the inflow pipe 10 rotates the first stopcock 12 with respect to the second pipe portion 22 around the second axis L2. Connect rotatably to. Further, the second stopcock connecting mechanism 16 for connecting the third pipe portion 23 and the second stopcock 13 of the inflow pipe 10 has the second stopcock 13 as the third axis with respect to the third pipe portion 23. Connect rotatably around L3. Therefore, when the upstream pipe portion 25 of the inflow pipe 10 is connected to the vertical pipe 2, the first pressure reducing valve unit main body 20 (1) including the first water stop valve 12 and the first pressure reducing valve 18 is first. It can rotate around the axis L1 and around the second axis L2. Further, the second pressure reducing valve unit main body 20 (2) including the second water stop valve 13 and the second pressure reducing valve 19 can rotate around the first axis L1 and around the third axis L3.

Therefore, the first pressure reducing valve unit main body 20 (1) of the pressure reducing valve unit 1B connected to the vertical pipe 2 and the first pipe 5 for water supply connected to the secondary side of the first pressure reducing valve unit main body 20 (1). When and are not arranged in the desired positional relationship, the first pressure reducing valve unit main body 20 (1) is rotated around the first axis L1 to rotate the first pressure reducing valve unit main body 20 (1) and the first pressure reducing valve unit main body 20 (1). The positional relationship with the pipe 5 can be adjusted. Further, the second pressure reducing valve unit main body 20 (2) of the pressure reducing valve unit 1B connected to the vertical pipe 2 and the second pipe 6 for water supply connected to the secondary side of the second pressure reducing valve unit main body 20 (2). When and are not arranged in the desired positional relationship, the second pressure reducing valve unit main body 20 (2) is rotated around the first axis L1 to rotate the second pressure reducing valve unit main body 20 (2) and the second pressure reducing valve unit main body 20 (2). The positional relationship with the pipe 6 can be adjusted. As a result, the second pressure reducing valve unit main body 20 (2) and the pipe 4 do not need to be reattached to the vertical pipe 2 of the pressure reducing valve unit 1B, or the first pipe 5 and the second pipe 6 are routed. Can be connected to. Therefore, even if the pressure reducing valve unit 1B connected to the vertical pipe 2 and the first pipe 5 are displaced from each other from a desired positional relationship, these connections can be easily made. Further, even when the pressure reducing valve unit 1B connected to the vertical pipe 2 and the second pipe 6 are displaced from the desired positional relationship, these connections can be easily performed.

Further, the first pressure reducing valve unit main body 20 (1) rotates around the second axis L2. Therefore, when the first pressure reducing valve unit main body 20 (1) is rotated around the first shaft L1, the first pressure reducing valve unit main body 20 (1) is rotated around the second shaft L2, and the first stopcock is used. The direction of the handle 55 of the 12 can be oriented in a direction that is easy to operate. Similarly, the second pressure reducing valve unit main body 20 (2) rotates around the third axis L3. Therefore, when the second pressure reducing valve unit main body 20 (2) is rotated around the first shaft L1, the second pressure reducing valve unit main body 20 (2) is rotated around the third shaft L3, and the second water stop cock is used. The direction of the handle 55 of 13 can be oriented in a direction that is easy to operate.

Further, the pressure reducing valve unit 1B of this example can obtain the same effect as that of the pressure reducing valve unit 1A of Example 2.

In Examples 2 and 3, as the guide protrusions, one side guide protrusion 75a provided on one side of the virtual surface S and the other side guide protrusion 75b provided on the other side are provided, but one of them is provided. The guide protrusion may be omitted. Further, the first inner diameter dimension D1 of the first pipe portion 27 of the cheese 9 and the second inner diameter dimension D2 of the elbow 8 can be the same. That is, the inner diameter of the second pipe portion 28 may have the same dimensions as the inner diameter of the first pipe portion 27.

(Modification example)
FIG. 17 is a side view of the pressure reducing valve unit of the modified example. The pressure reducing valve unit 1C of this example distributes the water from the vertical pipe 2 to the three systems of the first pipe 5, the second pipe 6, and the third pipe 80 for water supply. In the pressure reducing valve unit 1C of this example, the second cheese 85 is inserted between the cheese 9 and the elbow 8 in the pressure reducing valve unit 1B of the third embodiment. Further, a third pressure reducing valve unit main body 83 including a third water stop valve 81 and a third pressure reducing valve 82 is connected to the secondary side of the second cheese 85 via a water stop valve connecting mechanism 84. .. The second cheese 85 is the same member as the cheese 9. The cheese 9 and the second cheese 85 are rotatably connected around the first axis L1 by the same third rotation connection mechanism 86 as the second rotation connection mechanism 32. The second cheese 85 and the elbow 8 are rotatably connected around the first axis L1 by the same fourth rotation connection mechanism 87 as the second rotation connection mechanism 32. The stopcock connection mechanism 84 has the same configuration as the first stopcock connection mechanism 15.

In the pressure reducing valve unit 1A of the second embodiment, the second cheese 85 is inserted between the cheese 9 and the elbow 8, and the third cheese 85 is placed on the secondary side of the second cheese 85 via the water stop valve connecting mechanism 84. Even when the pressure reducing valve unit main body 83 is connected, the pressure reducing valve unit that distributes the water from the vertical pipe 2 to the three systems of the first pipe 5, the second pipe 6, and the third pipe 80 for water supply can be configured. Further, in the pressure reducing valve unit 1C of Example 2 and the pressure reducing valve unit 1C of Example 3, the second cheese 85, the water stop valve connecting mechanism 84, and the third pressure reducing valve unit main body are between the cheese 9 and the elbow 8. If a plurality of intermediate units 90 composed of 83 are arranged and each of them is rotatably connected around the first axis L1, the pressure reducing valve unit distributes the water from the vertical pipe 2 to a desired number of systems and distributes them. Can be made to.

1,1A, 1B, 1C ... Pressure reducing valve unit, 2 ... Standing pipe, 3 ... Pipe joint, 4 ... Piping, 5 ... First piping, 6 ... Second piping, 7 ... Fastening mechanism, 8 ... Elbow, 9 ... Cheese (Piping member) 10 ... Inflow pipe, 11 ... Stopcock, 12 ... First stopcock, 13 ... Second stopcock, 14 ... Stopcock connection mechanism, 15 ... First stopcock connection mechanism, 16 ... 2nd water stop valve connection mechanism, 17 ... pressure reducing valve, 18 ... first pressure reducing valve, 19 ... second pressure reducing valve, 20 ... pressure reducing valve unit body, 20 (1) ... first pressure reducing valve unit body, 20 ( 2) ... 2nd pressure reducing valve unit main body, 21 ... 1st pipe part, 22 ... 2nd pipe part, 23 ... 3rd pipe part, 24 ... curved pipe part, 25 ... upstream side pipe part, 25a ... annular flange part , 26 ... downstream side pipe part, 27 ... first pipe part, 27b ... notched notch part, 28 ... second pipe part, 30 ... rotation connection mechanism, 31 ... first rotation connection mechanism, 32 ... second Rotational connection mechanism, 33 ... large diameter cylinder part, 34 ... insertion cylinder part, 35 ... packing, 36 ... ring-shaped member, 37 ... notch, 38 ... inner annular groove, 39 ... outer annular groove, 41 ... large diameter cylinder Part, 42 ... Inflow pipe side flange part, 43 ... Circular recess, 44 ... Packing, 45 ... Holding mechanism, 46 ... Holding member, 46a ... Arc groove, 47 ... Wire member, 48 ... Tightening mechanism, 50 ... Valve box part, 51 ... Inflow pipe part, 51a ... Insert cylinder part, 51b ... Water stop valve side flange part, 51c ... Circular groove, 52 ... Outflow pipe part, 53 ... Valve chamber, 54 ... Ball valve body, 55 ... Handle, 56 ... Shaft Unit, 57 ... Operation unit, 58 ... Connection mechanism, 60 ... Pressure reducing valve main body part, 61 ... Inflow pipe part, 62 ... Outflow pipe part, 65 ... Internal flow path, 65a ... First region, 65b ... Second region, 66 ... Diaphragm, 67 ... Flow path portion, 67a ... Intermediate region, 68 ... Valve seat, 69 ... Downstream flow path portion, 70 ... Coil spring, 71 ... Stem, 72 ... Valve body, 74 ... Packing, 75a ... One side guide protrusion Part, 75b ... Other side guide protrusion, 76 ... Recess, 77 ... Bag nut, 77a ... Bag part, 77b ... Nut part, 80 ... Third pipe, 81 ... Third stopcock, 82 ... Third pressure reducing valve, 83 ... 3rd pressure reducing valve unit body, 84 ... Water stop valve connection mechanism, 85 ... 2nd elbow, 86 ... 3rd rotation connection mechanism, 87 ... 4th rotation connection mechanism, 90 ... Intermediate unit, D1 ... 1st inner diameter , D2 ... 2nd inner diameter dimension, L1 ... 1st axis, L2 ... 2nd axis, L21 ... 1st pipe axis, L22 ... 2nd pipe axis, L3 ... 3rd axis, V ... orthogonal direction, X ... 1st axis Direction, X1 ... 1st direction, X2 ... 2nd direction, Y ... 2nd axis direction, Z ... 3rd axis direction

Claims (7)

Inflow pipe and
With a water stopcock,
A water stopcock connection mechanism for connecting the water stopcock to the inflow pipe,
The faucet has a pressure reducing valve connected to the opposite side of the inflow pipe.
The inflow pipe extends in the direction of the first axis along the first axis and the second axis along the second axis communicating with the first tube portion and intersecting with the first axis. With a second pipe part,
The first pipe portion includes an upstream pipe portion extending in the first axial direction, a downstream pipe portion coaxial with the upstream pipe portion, and the downstream pipe portion with respect to the first pipe portion. Equipped with a rotary connection mechanism that rotatably connects around the first axis,
The water flowing into the inflow pipe flows through the upstream side pipe portion and the downstream side pipe portion in this order.
The second pipe portion communicates with the downstream side pipe portion, and the second pipe portion communicates with the downstream pipe portion.
The water stop valve connection mechanism is a pressure reducing valve unit characterized in that the water stop valve is rotatably connected to the second pipe portion around the second axis. Inflow pipe and
The first stopcock and
The second stopcock and
A first stopcock connection mechanism for connecting the first stopcock to the inflow pipe,
A second faucet connecting mechanism for connecting the second faucet to the inflow pipe,
A first pressure reducing valve connected to the opposite side of the inflow pipe of the first stopcock,
It has a second pressure reducing valve connected to the side opposite to the inflow pipe of the second stopcock.
The inflow pipe extends in a second axis direction along a second axis that communicates with the first pipe portion and intersects with the first axis, and a first pipe portion that extends in the first axis direction along the first axis. A second pipe portion and a third pipe portion that communicates with the first pipe portion and extends in the direction of the third axis along the third axis that intersects with the first axis are provided.
The first pipe portion includes a first pipe portion extending in the first axial direction, a second pipe portion coaxial with the first pipe portion, and the second pipe portion with respect to the first pipe portion. Equipped with a rotary connection mechanism that rotatably connects around the first axis,
The water flowing into the inflow pipe flows through the first pipe portion and the second pipe portion in this order.
The second pipe portion communicates with the first pipe portion, and the second pipe portion communicates with the first pipe portion.
The third pipe portion communicates with the second pipe portion, and the third pipe portion communicates with the second pipe portion.
The first stopcock connection mechanism rotatably connects the first stopcock to the second pipe portion around the second axis.
The second water stop valve connecting mechanism is a pressure reducing valve unit characterized in that the second water stop valve is rotatably connected to the third pipe portion around the third axis. Inflow pipe and
The first stopcock and
The second stopcock and
A first stopcock connection mechanism for connecting the first stopcock to the inflow pipe,
A second faucet connecting mechanism for connecting the second faucet to the inflow pipe,
A first pressure reducing valve connected to the opposite side of the inflow pipe of the first stopcock,
It has a second pressure reducing valve connected to the side opposite to the inflow pipe of the second stopcock.
The inflow pipe extends in a second axis direction along a second axis that communicates with the first pipe portion and intersects with the first axis, and a first pipe portion that extends in the first axis direction along the first axis. A second pipe portion and a third pipe portion that communicates with the first pipe portion and extends in the direction of the third axis along the third axis that intersects with the first axis are provided.
The first pipe portion includes an upstream pipe portion extending in the first axial direction, a first pipe portion coaxial with the upstream pipe portion, a second pipe portion coaxial with the first pipe portion, and the first pipe portion. The first rotation connection mechanism 31 that rotatably connects one pipe portion to the upstream side pipe portion around the first axis, and the first pipe portion to the first pipe portion. It has a second rotation connection mechanism 32 that rotatably connects around the axis.
The water flowing into the inflow pipe flows through the upstream side pipe portion, the first pipe portion, and the second pipe portion in this order.
The second pipe portion communicates with the first pipe portion, and the second pipe portion communicates with the first pipe portion.
The third pipe portion communicates with the second pipe portion, and the third pipe portion communicates with the second pipe portion.
The first stopcock connection mechanism rotatably connects the first stopcock to the second pipe portion around the second axis.
The second water stop valve connecting mechanism is a pressure reducing valve unit characterized in that the second water stop valve is rotatably connected to the third pipe portion around the third axis. The first pipe portion and the second pipe portion are composed of one piping member.
In the piping member, the second pipe portion protrudes in the second axial direction from the middle of the first pipe portion in the first axial direction.
The inner peripheral surface of the piping member includes a first pipe shaft of the first pipe portion extending along the first axis and a second pipe shaft of the second pipe portion extending along the second axis. The pressure reducing valve according to claim 2 or 3, wherein a guide protrusion for guiding a part of the water flowing through the first pipe portion to the second pipe portion is provided on one side of the virtual surface. unit. The guide protrusion is an end portion of the second pipe portion on the side of the first pipe portion and faces the side of the first pipe portion from a region located in the second direction from the second pipe axis. Curved in the first direction
The pressure reducing valve unit according to claim 4, wherein the end of the guide protrusion in the first direction is located in the first direction with respect to the second pipe shaft. As the guide protrusion, one side guide protrusion provided on one side of the virtual surface and the other guide protrusion provided on the other side of the virtual surface are provided.
5. The fifth aspect of the present invention is that the one-side guide protrusion and the other-side guide protrusion are continuous in a region of the second pipe portion located in the second direction of the second pipe shaft. The pressure reducing valve unit described in. The pressure reducing valve unit according to any one of claims 2 to 6, wherein the inner diameter of the second pipe portion is smaller than the inner diameter of the first pipe portion.

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