JP2017190559A - Meter unit and composite meter unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water meter unit that enables a stop cock to be easily replaced.SOLUTION: A water meter unit 1 is installed between a primary piping 2 and a secondary piping 3. The water meter unit has a ball stop cock 6, a water meter 7 and a nonreturn valve 8 along a distribution direction S in this order. The water meter unit 1 has a connection pipe 5, which is disposed on upstream side of the ball stop cock 6, and a base 10 on which the connection pipe 5 and the nonreturn valve 8 are fixed. The water meter 7 is connected to the nonreturn valve 8. The ball stop cock 6 is not fixed to the base 10 but is detachably connected to the connection pipe 5 and the flow rate meter 7 between the connection pipe 5 and the flow rate meter 7. The connection pipe 5 is connected to the primary piping 2 while the nonreturn valve 8 is connected to the secondary piping 3.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a meter unit that includes a stop cock, a flow meter, and a check valve, and is disposed in the middle of a water pipe or the like.

  When a water meter is installed between a primary side pipe and a secondary side pipe that are constructed in advance, a meter unit that integrally includes a water meter and valve devices installed on both sides thereof is used. The meter unit described in Patent Literature 1 includes a stop cock, a water meter, and a check valve from the upstream side to the downstream side in the flowing water direction. In the meter unit, the stop cock and the check valve are fixed to the base. The water meter is not fixed to the base and is detachably connected to the water stop cock and the check valve. A primary side pipe is connected to the water stop cock, and a secondary side pipe is connected to the check valve. The stop cock is a ball stop cock.

Japanese Patent Laid-Open No. 11-93226

  In the ball stop cock, if the opening / closing operation is performed in a state where foreign matter or the like has entered, the ball valve body may be damaged and water stoppage may not be possible. Here, it is necessary to replace the faucet that has become inoperable due to damage, etc., but it is easy to remove the faucet from the meter unit already installed between the primary side pipe and the secondary side pipe. is not.

  In view of such a point, an object of the present invention is to propose a meter unit and a composite meter unit in which a stop cock can be easily replaced.

  In order to solve the above-described problem, the meter unit of the present invention is installed between a primary side pipe and a secondary side pipe, and is upstream of the flow direction of the fluid flowing from the primary side pipe to the secondary side pipe. In a meter unit including a stop cock, a flow meter, and a check valve in this order from the side toward the downstream side, a connection pipe disposed upstream of the stop cock, the connection pipe, and the check valve A fixed base, and the flow meter is connected to the check valve, and the stop cock is not fixed to the base, and is connected between the connection pipe and the flow meter. The connecting pipe and the flow meter are detachably connected, the connecting pipe is connected to the primary side pipe, and the check valve is connected to the secondary side pipe.

  According to the present invention, the water stop cock is detachably connected between the connecting pipe and the flow meter. Moreover, when installing a meter unit in the middle of piping, a primary side piping is connected to a connection pipe, and a secondary side piping is connected to the non-return valve located downstream from a flowing water meter. Furthermore, the stop cock is not fixed to the base. Therefore, even after the meter unit is installed in the middle of the piping, it is easy to remove the water stop cock from the meter unit. Therefore, it is easy to replace the stop cock when the stop cock fails.

  In the present invention, it is desirable that the stop cock includes a stop cock side attaching / detaching mechanism for detachably connecting the stop cock and the flow meter. If it does in this way, a water stop cock can be made removable, without adding a change to the structure of a flow meter.

  In the present invention, the connecting pipe may include a connecting pipe side attaching / detaching mechanism for detachably connecting the connecting pipe and the water stop cock. If it does in this way, the structure of the part connected with a connecting pipe in the stop cock side can be simplified.

  In the present invention, the connection pipe may include an on-off valve that opens and closes a pipe line of the connection pipe. If it does in this way, after closing the pipe line of a connection pipe by an on-off valve and stopping water, a stop cock can be exchanged.

  In the present invention, the water stop cock may be a ball stop cock. The ball stop cock may break down when the opening / closing operation is performed in a state where foreign matter has entered. Therefore, in the meter unit, if the ball stop cock is not fixed to the base but can be attached to and detached from the connecting pipe and the flow meter, the replacement can be easily performed when the ball stop cock fails.

  Next, the present invention provides a composite meter unit disposed between one primary side pipe and a plurality of secondary side pipes, and the number of the meter units corresponding to the number of secondary side pipes. Each of the plurality of meter units includes a communication portion communicating with an upstream end portion of each of the connection pipes, and the communication portion is connected to the primary side pipe, and the reverse of the plurality of meter units is provided. The stop valve is connected to each of the plurality of secondary pipes.

  According to the present invention, when the stop cock of any meter unit of the composite meter unit is damaged, the stop cock can be easily replaced.

  In the present invention, it is preferable that the communication portion includes an on-off valve that opens and closes a pipe line of the communication portion. If it does in this way, it can block that the water which flows in from a primary side piping distributes each of a plurality of meter units by closing a pipe of a communicating part by an on-off valve, and stopping water. Therefore, when the stop cock of any meter unit of the composite meter unit is damaged, the stop cock can be easily replaced.

  In this invention, each meter unit shall be equipped with the on-off valve which opens and closes the pipe line of the said connection pipe downstream from the said communication part in the said connection pipe. If it does in this way, it can block that the water which flows in from a primary side piping distribute | circulates the meter unit which closed the pipe by closing the pipe of a communication part by an on-off valve, and stopping water. Therefore, when the stop cock of the meter unit is damaged, the stop cock can be easily replaced.

  In the present invention, it is desirable that the bases of the meter units are integrated to form one base member. In this way, a plurality of meter units can be integrated. In addition, the number of parts of the composite meter unit can be reduced.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes easy to replace the water stop cock of the meter unit installed between the primary side piping and the secondary side piping.

It is sectional drawing of the water meter unit to which this invention is applied. It is explanatory drawing of the peripheral part of the connecting pipe and stop cock in a water meter unit. It is explanatory drawing of a composite meter unit.

  A water meter unit according to an embodiment of the present invention will be described below with reference to the drawings.

(Water meter unit)
FIG. 1 is a cross-sectional view of a water meter unit installed in the middle of a water pipe. In FIG. 1, the water meter is indicated by a dotted line. The water meter unit 1 of this example is installed in the middle of a water pipe that draws tap water from a water pipe into a building such as a house. As shown in FIG. 1, the water meter unit 1 is installed between a primary side pipe 2 and a secondary side pipe 3 constituting a water pipe. The water meter unit includes a connecting pipe 5, a ball stop cock (stop cock) 6, and a water meter 7 from the upstream side to the downstream side in the flow direction S of the fluid flowing from the primary side pipe 2 to the secondary side pipe 3. , And a check valve 8 in this order. The connecting pipe 5 includes an on-off valve 9 that opens and closes the pipe line. In this example, the on-off valve 9 is a ball stop cock.

  In addition, the water meter unit 1 includes a base 10 located below the connecting pipe 5, the ball stop cock 6, the water meter 7 and the check valve 8. When the water meter unit 1 is viewed from above, the base 10 has a rectangular shape, and its longitudinal direction is directed to the arrangement direction of the connecting pipe 5, the ball stop cock 6, the water meter 7 and the check valve 8. ing. A connecting pipe 5 and a check valve 8 are fixed to the base 10. That is, a connecting pipe holding portion 11 that holds the connecting pipe 5 is provided at an end portion of the base 10 on the primary side pipe 2 side, and the connecting pipe 5 is fixed to the connecting pipe holding portion 11 with screws or the like. Yes. In addition, a check valve holding portion 12 that holds the check valve 8 is provided at an end portion of the base 10 on the secondary pipe 3 side, and the check valve 8 is provided with a check valve holding portion 12 by a screw or the like. It is fixed to.

  Here, the ball stop cock 6 and the water meter 7 are detachably connected to the connection pipe 5 and the check valve 8 between the connection pipe 5 and the check valve 8. That is, the water meter 7 is not fixed to the base 10 but is detachably connected to the check valve 8. The ball stop cock 6 is not fixed to the base 10 and is detachably connected to the connection pipe 5 and the water meter 7.

  In the following, the three directions orthogonal to each other are referred to as a front-rear direction X, a width direction Y, and a vertical direction Z. Then, the front-rear direction X is the arrangement direction of the connecting pipe 5, the ball stop cock 6, the water meter 7 and the check valve 8, and the side where the connecting pipe 5 is located is the front X1 in the front-rear direction X and the check valve 8 is The side where it is located is the rear X2 in the front-rear direction X. The front-rear direction X is a direction along the tube axis L of the connection tube 5.

(Ball stop cock)
FIG. 2 is an explanatory view of the peripheral portion of the connecting pipe 5 and the ball stop cock 6 in the water meter unit 1. 2A is a plan view of the peripheral portion of the connecting pipe 5 and the ball stop cock 6 when viewed from above, and FIG. 2B is a cross-sectional view of the peripheral portion of the connecting pipe 5 and the ball stop cock 6. FIG. As shown in FIG. 2 (a), the ball stop cock 6 includes a stop cock main body 21, a first pipe part 22 protruding forward X1 from the stop cock main body 21, and a stop cock main body 21. The 2nd pipe part 23 which protrudes back X2 is provided. As shown in FIG. 2B, the stop cock main body 21 includes a ball valve body 25, a valve chamber 26 that houses the ball valve body 25, and a handle 27 for rotating the ball valve body 25. The first tube portion 22 and the second tube portion 23 are coaxial and communicate with the valve chamber 26, respectively. A male screw 28 is provided on the outer peripheral surface of the first tube portion 22. The 2nd pipe part 23 is provided with the stop cock side attachment-and-detachment mechanism 31 for connecting the ball stop cock 6 and the water meter 7 so that attachment or detachment is possible.

  The water faucet side attaching / detaching mechanism 31 includes a slide holder 32, a first lock nut 33, and a second lock nut 34.

The slide holder 32 includes an inner cylinder member 35 and an outer cylinder member 36. The inner cylinder member 35 includes a small-diameter cylinder portion 37 and a large-diameter cylinder portion 38 from the front X1 toward the rear X2. The large-diameter cylindrical portion 38 is coaxial with the small-diameter cylindrical portion 37 and has larger inner and outer diameter dimensions than the small-diameter cylindrical portion 37. An end side portion of the front X1 of the small diameter cylindrical portion 37 is inserted into the second pipe portion 23 from the rear X2. An annular groove 39 is provided at the end portion of the front X1 on the outer peripheral surface of the small diameter cylindrical portion 37. An O-ring 40 is attached to the annular groove 39. The O-ring 40 liquid-tightly seals between the second tube portion 23 and the small diameter cylinder portion 37 when the small diameter tube portion 37 is inserted into the second tube portion 23. The slide holder 32 is movable in the front-rear direction X in a state where the small diameter cylindrical portion 37 is inserted on the inner peripheral side of the second pipe portion 23.

  Between the small diameter cylindrical portion 37 and the large diameter cylindrical portion 38 on the inner peripheral surface of the inner cylindrical member 35, an annular surface 41 facing the rear X2 is provided. An annular groove 42 around the tube axis L is formed in the annular surface 41 coaxially with the annular surface 41. An annular packing 43 is attached to the annular groove 42.

  Here, the annular surface 41 and the annular inner wall surface 38 a of the large-diameter cylinder portion 38 on the inner peripheral surface of the inner cylinder member 35 receive the end portion of the connecting pipe portion 7 a on the front X1 (upstream side) of the water meter 7. A water meter receiver 44 is provided. That is, when connecting the ball stop cock 6 and the water meter 7, the end of the front X1 of the upstream connecting pipe portion 7 a of the water meter 7 is inserted into the large-diameter cylindrical portion 38 of the inner cylindrical member 35. Have been mated. Further, the end face of the front X1 of the connecting pipe portion 7a of the water meter 7 is brought into contact with the annular surface 41. When the connecting pipe portion 7a on the upstream side of the water meter 7 is inserted into the water meter receiving portion 44 of the ball stop cock 6, the packing 43 is elastically deformed between the annular surface 41 and the end face of the connecting pipe portion 7a. Then, the space between them is liquid-tightly sealed.

  The outer cylindrical member 36 has a larger inner diameter than the large-diameter cylindrical portion 38. The outer cylindrical member 36 is integrally fixed to the outer peripheral side of the large-diameter cylindrical portion 38 with the rear X2 end thereof aligned with the rear X2 end of the inner cylindrical member 35. Here, the dimension of the outer cylindrical member 36 in the front-rear direction X is longer than that of the large-diameter cylindrical portion 38. Accordingly, the outer cylindrical member 36 includes a cylindrical protruding portion 45 that protrudes from the large-diameter cylindrical portion 38 toward the front X1. An annular gap 47 (annular groove) is formed in the radial direction between the protruding portion 45 and the small diameter cylindrical portion 37 of the inner cylindrical member 35.

  Here, in a state where the front X1 end portion of the inner cylindrical member 35 (small-diameter cylindrical portion 37) is inserted into the second tube portion 23, the rear X2 end portion of the second tube portion 23 becomes the gap 47 (groove). It will be inserted. A male screw 49 is formed at the end portion of the outer peripheral surface of the outer cylindrical member 36 at the front X1.

  The first lock nut 33 is attached to the outer peripheral side of the second pipe portion 23 in a state in which movement to the rear X2 is restricted by a retaining ring 51 attached to the outer peripheral surface of the second pipe portion 23. The first lock nut 33 is rotatable around the tube axis L. In addition, the first lock nut 33 includes a female screw 52 that engages with the male screw 49 of the slide holder 32 (the male screw 49 of the outer peripheral surface of the outer cylindrical member 36) at the rear X2 end side portion of the inner peripheral surface thereof. Further, the first lock nut 33 includes a male screw 53 at the rear X2 end portion of the outer peripheral surface thereof.

  The second lock nut 34 includes a female screw 55 that can be screwed into the male screw 53 of the first lock nut 33. The second lock nut 34 is located on the outer peripheral side of the slide holder 32.

  Here, when the first lock nut 33 is rotated while the female screw 52 of the first lock nut 33 and the male screw 49 of the slide holder 32 (the male screw 49 of the outer cylindrical member 36) are screwed together, the slide holder 32 advances and retreats in the front-rear direction X with respect to the second pipe portion 23. In addition, by fixing the female screw 55 of the second lock nut 34 to the male screw 53 on the outer peripheral surface of the first lock nut 33 and tightening, the fixing of the slide holder 32 by the first lock nut 33 is ensured. .

(Connection pipe)
An end portion of the front X1 of the connection pipe 5 is a pipe connection pipe portion 61 to which the primary side pipe 2 is connected. Further, the end portion X2 of the connection pipe 5 is a stop cock connection pipe portion 62 to which the ball stop cock 6 is connected. Between the pipe connection pipe part 61 and the stop cock connection pipe part 62 is an on-off valve part 63 constituting the on-off valve 9. The on-off valve portion 63 includes a ball stop cock as the on-off valve 9. That is, the on-off valve portion 63 includes a ball valve body 65, a valve chamber 66 that houses the ball valve body 65, and a handle 67 for rotating the ball valve body 65. The pipe connection pipe part 61 and the stop cock connection pipe part 62 communicate with the valve chamber 66 of the on-off valve part 63, respectively. The connecting pipe 5 and the on-off valve 9 (ball stop cock) are integrated. Here, the rear part of the pipe connecting pipe part 61 and the front part of the on-off valve part 63 are fixed to the connecting pipe holding part 11 of the base 10.

  A male screw 68 is provided on the outer peripheral surface of the pipe connecting pipe portion 61. The stop cock connecting pipe portion 62 includes a connecting pipe side attaching / detaching mechanism 69 for detachably connecting the ball stop cock 6.

  The connecting pipe side attaching / detaching mechanism 69 includes a retaining ring 71 and a cap nut 72. The cap nut 72 is restricted from moving backward X2 by a stop ring 71 attached to the outer peripheral surface of the stop cock connecting pipe portion 62. The cap nut 72 is provided with a female screw 73 to be screwed into the male screw 28 of the ball stop cock 6 on the inner peripheral surface thereof. In addition, the back portion of the cap nut 72 where the female screw 73 is formed protrudes from the stop cock connecting pipe portion 62 to the rear X2. An annular groove 74 is formed around the tube axis L on the rear end face of the stop cock connecting pipe portion 62. An O-ring 75 is attached to the annular groove 74.

  Here, as shown in FIG. 1, the check valve 8 is provided with a water meter receiving portion 78 that receives the connecting pipe portion 7 b on the downstream side of the water meter 7. That is, the check valve 8 has an annular surface 80 facing the front X1 on the inner peripheral surface of the pipe portion 79 extending forward X1, and an annular inner wall surface 81 extending continuously forward X1 from the outer peripheral edge of the annular surface 80. Is provided. An annular step formed by the annular surface 80 and the annular inner wall surface 81 is a water meter receiving portion 78. An annular groove 83 around the tube axis L is formed in the annular surface 80 coaxially with the annular surface 80. An annular packing 84 is attached to the annular groove 83.

  When connecting the check valve 8 and the water meter 7, the end of the downstream X2 of the connecting pipe portion 7 b on the downstream side of the water meter 7 is fitted into the water meter receiving portion 78. Then, the rear X2 end surface of the connecting pipe portion 7b is in contact with the annular surface 80. When the end surface of the connecting pipe portion 7b of the water meter 7 comes into contact with the annular surface 80, the packing 84 is elastically deformed between the annular surface 80 and the end surface of the connecting tube portion 7a. To seal.

  When the water meter unit 1 is configured, first, the first lock nut 33 of the ball stop cock 6 is rotated, and the slide holder 32 is moved to the front X1 side. Next, the ball stop cock 6 is connected to the connecting pipe 5 fixed to the base 10. That is, as shown in FIG. 2, the water stopper connecting pipe portion 62 of the connecting pipe 5 and the first pipe portion 22 of the ball water stopper 6 are coaxially contacted from the front and rear direction X to The screw 73 and the male screw 28 of the first pipe portion 22 are screwed together.

  Thereafter, a water meter 7 is disposed between the check valve 8 fixed to the base 10 and the ball stop cock 6. That is, as shown in FIG. 1, the connecting pipe portion 7 b at the rear X 2 of the water meter 7 is fitted into the water meter receiving portion 78 of the check valve 8. Further, the water meter receiving portion 44 of the slide holder 32 of the ball stop cock 6 and the connecting pipe portion 7a of the front X1 of the water meter 7 are coaxially positioned. Thereafter, the first lock nut 33 is rotated to move the slide holder 32 to the rear X2. Thereby, the distance between the water meter receiving part 44 of the slide holder 32 and the water meter receiving part 78 of the check valve 8 is made closer, and the water meter receiving part 44 of the slide holder 32 and the water meter receiving part of the check valve 8 are received. The water meter 7 is sandwiched between the unit 78.

(Replacing the ball stop cock after installing the water meter unit)
As shown in FIG. 1, the water meter unit 1 is installed in the middle of a water pipe with the primary side pipe 2 connected to the connecting pipe 5 and the check valve 8 connected to the secondary side pipe 3. The Here, in the ball stop cock 6, if the opening / closing operation is performed in a state where foreign matter or the like has entered, the ball valve body 25 may be damaged and water stoppage may not be possible. The ball stop cock 6 that has become unable to stop water needs to be replaced.

  In such a case, in this example, first, the on-off valve 9 (ball stop cock) of the connection pipe 5 is operated to close the pipe line of the connection pipe 5. This prevents water from flowing into the water meter unit 1 from the primary side pipe 2 side. Next, the first lock nut 33 of the ball stopper 6 is rotated to move the slide holder 32 forward X1. Thereby, the state in which the water meter receiving part 44 of the ball stop cock 6 is separated from the water meter 7 is formed.

  Thereafter, the cap nut 72 of the connection pipe 5 is rotated to release the connection between the connection pipe 5 and the ball stop cock 6. Thereby, the ball stop cock 6 can move in the front-rear direction X between the water meter 7 and the connecting pipe 5. Therefore, after the ball stopper 6 is moved to a position where it does not interfere with the water meter 7 and the connecting pipe 5, the ball stopper 6 is pulled out in the width direction Y or the vertical direction Z of the water meter unit 1 to The stopper 6 is removed from the water meter unit 1.

  Thereafter, when a new ball stop cock 6 is attached to the water meter unit 1, the ball stop cock 6 is inserted between the water meter 7 and the connecting pipe 5. Thereafter, the ball stop cock 6 is attached to the connecting pipe 5 fixed to the base 10. That is, the water stop plug connection pipe portion 62 of the connection pipe 5 and the first pipe portion 22 of the ball stop cock 6 are coaxially contacted from the front-rear direction X so that the female screw 73 of the cap nut 72 and the first pipe portion 22 male screws 28 are screwed together. Thereafter, the water meter receiving portion 44 of the slide holder 32 of the ball stop cock 6 and the connecting pipe portion 7a of the front X1 of the water meter 7 are positioned coaxially. And the 1st lock nut 33 is rotated and the slide holder 32 is moved to back X2. Thereby, the distance between the water meter receiving part 44 of the slide holder 32 and the water meter receiving part 78 of the check valve 8 is made closer, and the water meter receiving part 44 of the slide holder 32 and the water meter receiving part of the check valve 8 are received. The water meter 7 is sandwiched between the unit 78.

(Function and effect)
According to this example, the ball stop cock 6 is detachably connected between the connection pipe 5 and the water meter 7. When the water meter unit 1 is installed in the middle of the water pipe, the primary side pipe 2 is connected to the connecting pipe 5, and the secondary side pipe 3 is located downstream of the water meter 7. 8 is connected. Further, the ball stop cock 6 is not fixed to the base 10. Accordingly, it is easy to remove the ball stop cock 6 from the water meter unit 1 even after the water meter unit 1 is installed in the middle of the water pipe. Therefore, it is easy to replace the ball stop cock 6 when the ball stop cock 6 breaks down.

  Further, in this example, the connection pipe 5 includes an on-off valve 9 that opens and closes the pipe line of the connection pipe 5. Therefore, the ball stop cock 6 can be replaced after the connecting pipe 5 is closed by the on-off valve 9 to stop the water. Here, if the connecting pipe 5 is not provided with the on-off valve 9, the water pipe is moved to the stop cock provided in the primary side pipe 2, and the stop cock is operated to supply water to the water meter unit 1. It is necessary to prevent the inflow. On the other hand, in this example, the ball stop cock 6 can be replaced by stopping the water downstream of the connecting pipe 5 without moving from the place where the water meter unit 1 is installed.

  Here, in the above example, the connection pipe 5 is provided with a ball stop cock as the on-off valve 9, but any on-off valve 9 may be provided as long as the pipe line of the connection pipe 5 can be opened and closed. . For example, you may provide a water stop cock provided with a former stop cock, a stop cock provided with a needle valve, a stop cock provided with a gate valve, etc. The on-off valve 9 of the connecting pipe 5 can be omitted.

(Other embodiments)
FIG. 3 is an explanatory diagram of a composite water meter unit 90A and a composite water meter unit 90B including a plurality of the water meter units 1 described above. The composite water meter units 90 </ b> A and 90 </ b> B are installed between one primary side pipe 2 and a plurality of secondary side pipes 3. In the composite water meter unit 90A shown in FIG. 3A, the primary side pipe 2 is connected from the width direction Y of the composite water meter unit. In the composite water meter unit 90B shown in FIG. 3B, the primary side pipe is connected from the front X1 of the two composite water meter units. In addition, since each water meter unit 1 which comprises composite water meter unit 90A, 90B is equipped with the structure corresponding to said water meter unit 1, the same code | symbol is attached | subjected to a corresponding part and the description is abbreviate | omitted.

  The composite water meter units 90 </ b> A and 90 </ b> B of this example include four water meter units 1. Each water meter unit 1 is arranged in parallel with the longitudinal direction of each base 10 oriented in the same direction. In the following description, the longitudinal direction of the base 10 of each water meter unit 1 is the longitudinal direction X, and the direction orthogonal to the longitudinal direction of the base 10 (the arrangement direction of the bases 10) is the width direction Y, the longitudinal direction X, and the width direction Y. A direction orthogonal to the vertical direction Z is defined as a vertical direction Z.

  The four water meter units 1 constituting the composite water meter units 90 </ b> A and 90 </ b> B include a communication portion 91 that communicates with the upstream end portion of each connection pipe 5.

  More specifically, in the composite water meter units 90A and 90B, the connection pipe 5 of each water meter unit 1 is fixed to the base 10 and extends from the base 10 to the front X1, and a small diameter connection pipe part 92. A large-diameter connecting pipe portion 93 extending in the width direction Y from the front end portion of the. The large-diameter connection pipe portion 93 of the connection pipe 5 of each water meter unit 1 includes a communication portion 91 that communicates with the upstream end portion to which the primary side pipe 2 is connected. More specifically, the upstream end of the large-diameter connection pipe portion 93 of the connection pipe 5 of each water meter unit 1 is combined into one common pipe 95 (communication portion 91) and connected to the primary side pipe 2. Yes.

  Here, in the composite water meter unit 90 </ b> A shown in FIG. 3A, the common pipe 95 (communication portion 91) is located at a position deviated from the four water meter units 1 in the width direction Y when viewed from the front-rear direction X. Is provided. The common pipe 95 (communication portion 91) extends in the width direction Y. In the composite water meter unit 90B shown in FIG. 3B, a common pipe 95 (communication portion 91) is provided at the center in the arrangement direction (width direction Y) of the four four water meter units 1. The common pipe 95 (communication portion 91) extends in the front-rear direction X.

  The composite water meter units 90A and 90B are each provided with an on-off valve 9 for opening and closing the common pipe 95 in the common pipe 95 (communication portion 91). The on-off valve 9 in the composite water meter units 90A and 90B is a ball stop cock.

  In the composite water meter units 90 </ b> A and 90 </ b> B of this example, the ball stop cock 6 of each water meter unit 1 is not fixed to the base 10. In each water meter unit 1, the ball stop cock 6 is detachably connected to the connection pipe 5 and the water meter 7. Therefore, when the ball stopcock 6 of any water meter unit 1 is damaged, it is easy to replace the ball stopcock 6.

Further, in the composite water meter units 90A and 90B of this example, the upstream end portion of each connection pipe 5 connected to the primary side pipe 2 is combined into one common pipe 95 (communication portion 91). The common pipe 95 is provided with the opening / closing valve 9. Therefore, when the water stop cock 6 of any water meter unit 1 is damaged, the water is prevented from flowing through each water meter unit 1 by closing the pipe of the common pipe 95 by the on-off valve 9. it can. Therefore, the composite water meter unit 9
The ball stop cock 6 can be replaced by stopping water downstream of the connection pipe 5 without moving from the place where 0A and 90B are installed.

  In the composite water meter units 90A and 90B, the base 10 of each water meter unit 1 can be integrated. In other words, the composite water meter units 90 </ b> A and 90 </ b> B can include one base member in which the base 10 of each water meter unit 1 is integrated. In this case, the base member includes four connection pipe holding portions 11 for fixing the connection pipe 5 of each water meter unit 1 and four check valve holding portions for fixing the check valve 8 of each water meter unit 1. 12 may be provided.

  In addition, the composite water meter units 90A and 90B may include an on-off valve 9 for opening and closing the pipe line downstream of the common pipe 95 (communication portion 91) in the connection pipe 5 of each water meter unit 1. For example, the opening / closing valve 9 may be provided in the small diameter connecting pipe portion 92 in the connecting pipe 5 of each water meter unit 1. Even if it does in this way, without stopping from the place where composite water meter unit 90A, 90B is installed, water stop of the downstream rather than the connecting pipe 5 can be performed, and the ball stop cock 6 can be replaced | exchanged.

  Here, the water faucet side attaching / detaching mechanism for detachably connecting the ball stop cock 6 and the water meter 7 and the connecting pipe side attaching / detaching mechanism for connecting the connecting pipe 5 and the ball stop cock 6 detachably are as follows: The configuration is not limited to the above. For example, the pipe portion 79 of the check valve 8 has a structure similar to that of the water faucet side attaching / detaching mechanism 31 (the slide holder 32 and the first lock nut 33 for moving the slide holder 32 back and forth in the front-rear direction X). The ball stop cock 6 can be configured to include a water meter receiving part 44 in the second pipe part 23 as a stop cock side attaching / detaching mechanism.

  In addition, as a connecting pipe side attaching / detaching mechanism, the same structure as the above stop cock attaching / detaching mechanism 31 (the slide holder 32 and the slide holder 32 are moved forward and backward in the front-rear direction X). A first lock nut 33 to be provided). In this case, a receiving portion having the same configuration as the water meter receiving portion 44 is provided on the rear end surface of the slide holder 32, and the end portion of the front X1 of the first pipe portion 22 of the ball stop cock 6 is received by this receiving portion. Can be. Also in this case, the ball stop cock 6 can employ a configuration in which the second pipe portion 23 includes a water meter receiving portion 44 as a stop cock side attaching / detaching mechanism.

1 ... Water meter unit (meter unit)
2 ... Primary side pipe 3 ... Secondary side pipe 5 ... Connection pipe 6 ... Ball stop cock (stop cock)
7 ... Water meter (flow meter)
8 ... Check valve 9 ... Open / close valve 10 ... Base 31 ... Water faucet side attaching / detaching mechanism 69 ... Connection pipe side attaching / detaching mechanism 90A / 90B ... Compound water meter unit (composite meter unit)
91 ... Communication part S ... Distribution direction

Claims (9)

Installed between the primary side pipe and the secondary side pipe, a stop cock, a flow meter and the reverse from the upstream side to the downstream side in the flow direction of the fluid flowing from the primary side pipe to the secondary side pipe In a meter unit having stop valves in this order,
A connecting pipe disposed upstream of the stop cock;
A base to which the connecting pipe and the check valve are fixed;
The flow meter is connected to the check valve;
The stop cock is not fixed to the base, and is detachably connected to the connection pipe and the flow meter between the connection pipe and the flow meter,
The meter unit, wherein the connection pipe is connected to the primary side pipe, and the check valve is connected to the secondary side pipe. In claim 1,
The water faucet includes a water faucet side attaching / detaching mechanism for detachably connecting the water faucet and the flow meter. In claim 1 or 2,
The said connecting pipe is provided with the connecting pipe side attachment / detachment mechanism for connecting the said connecting pipe and the said water stop cock so that attachment or detachment is possible. In any one of claims 1 to 3,
The meter unit according to claim 1, wherein the connection pipe includes an on-off valve that opens and closes a pipe line of the connection pipe. In any one of claims 1 to 4,
The meter unit, wherein the stop cock is a ball stop cock. In the composite meter unit arranged between one primary side pipe and a plurality of secondary side pipes,
The meter unit according to claim 1 has a number corresponding to the number of the secondary side pipes,
The plurality of meter units includes a communication portion communicating with each other at an upstream end portion of each connection pipe, and the communication portion is connected to the primary pipe.
The check valve of the plurality of meter units is connected to each of the plurality of secondary pipes, respectively. In claim 6,
The composite meter unit, wherein the communication portion includes an on-off valve that opens and closes a pipe line of the communication portion. In claim 6,
Each meter unit includes an on-off valve that opens and closes a pipe line of the connection pipe on the downstream side of the communication portion in the connection pipe. In claim 6, 7 or 8,
The base of each meter unit is united to form a single base member.

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