JP5517254B2 - Water distribution pipe, water distribution pipe with water faucet and method for burying the same - Google Patents

Description

  The present invention relates to a water distribution pipe having a branch hole for attaching a water faucet to a pipe body, a water distribution pipe with a water faucet having a water faucet attached to the water distribution pipe, and a method of burying the water pipe.

When branching a pipeline from a distribution pipe buried in the ground to a new consumer, for example, the following method can be cited.
That is, first, the ground is excavated to a depth at which the entire pipe body 52 of the water distribution pipe is exposed. Next, as shown in FIG. 16, the semicircular saddle 55 a is applied to the outer surface of the tubular body 52 so that the water stop portion 60 faces upward with respect to the tubular body 52. A semicircular band 55b is applied to a position shifted from the position of the saddle 55a on the outer surface by a half circumference in the circumferential direction. The saddle-equipped water faucet 54 is attached to the pipe body 52 by inserting bolts 58a into the flanges 56 and 57 at both ends of the saddle 55a and the band 55b and tightening them with nuts 58b.

  The saddle-equipped water faucet 54 has a water passage hole 61 rising from the outer surface of the pipe body 52, a valve chamber 62 formed at the tip of the water passage hole 61, and a water passage hole 63 extending laterally from the valve chamber 62. , A mounting portion 66 having a drill hole 65 extending upward from the valve chamber 62, and a water stop valve having a valve body 67 in the valve chamber 62. The valve body 67 of the water stop valve is formed with three-way communication holes 68 that allow the water passage hole 61 on the pipe body 52 side, the water passage hole 63 on the connection portion 64 side, and the drill hole 65 to communicate with each other. By rotating the valve element 67 by 90 degrees with the spindle 69 provided on the side opposite to the connection portion 64, the water passage holes 61, 63 or the water passage hole 61 and the drill hole 65 can be communicated with each other. It can be opened and closed.

  After that, a drilling machine for drilling the branch hole 70 in the pipe body 52 is attached to the attachment portion 66 of the saddle-equipped water faucet 54, and the drill hole 65, the communication hole 68, and the pipe body 52 side that communicate with each other in a straight line. The drill hole of the drilling machine is lowered from above through the water passage hole 61 to form the branch hole 70 in the pipe body 52. Next, the drill is pulled up and the water stop valve is closed to stop the outflow of water. In this state, the drilling machine is removed from the mounting portion 66, and the drill hole 65 of the mounting portion 66 is covered with a lid 71 as shown in FIG. Block. Then, the water supply pipe 72 is connected to the connection portion 64, and then the water stop valve is opened to supply water to the water supply pipe 72.

  By the way, the water distribution pipe prevents corrosion of the inner surface 52a of the tubular body 52 by applying an anticorrosive coating 75 such as epoxy resin powder coating or mortar lining to the inner surface of the tubular body 52. A metal substrate (for example, cast iron) is exposed on the inner surface of the branch hole 70 formed in the pipe body 52, and water constantly comes into contact with the inner surface of the branch hole 70. For this reason, rust is generated on the inner surface of the branch hole 70 to cause red water, and if this state continues for a long time, the rust may grow into a rust hump and block the branch hole 70.

  Therefore, in order to prevent rust from occurring on the inner surface of the branch hole 70, for example, as shown in FIG. 17, a corrosion-resistant material such as rubber, resin, stainless steel or copper alloy, or a combination thereof is used. Generally, the inner surface of the branch hole 70 is covered and protected by the formed anticorrosion sleeve 73. In this case, flange portions that extend to the outer diameter side are provided on the upper and lower sides of the anticorrosion sleeve 73 so that water does not enter the inner surface of the branch hole 70 so as to be in close contact with the inner and outer surfaces of the tubular body 52 (for example, patents). Reference 1).

Japanese Patent Application Laid-Open No. 07-332583 (page 5, FIG. 6, page 7, FIG. 7)

By the way, from the viewpoint of reducing excavation work and excavation costs, it is desired to embed a water pipe at a shallow position. However, with regard to the embedding depth of the water distribution pipes, it is prescribed by the road administrator of each local government that the water pipe is buried at a distance greater than the prescribed distance from the road surface.
According to this regulation, since the distance from the road surface is measured based on the highest portion of the buried distribution pipe, the saddle is attached to the water pipe 54 with a saddle. It is necessary to make the distance between the end surface (upper surface) 71a of the lid 71 that closes the drill through hole 65 of the attached water faucet 54 and the road surface equal to or greater than a specified value.

Therefore, if the length from the branch hole 70 of the pipe body 52 to the end surface 71a of the lid 71, that is, the height of the water faucet 54 with a saddle can be reduced, the axial center of the pipe body 52 of the buried water distribution pipe. Since the length from S to the highest part of the water distribution pipe 51 is shortened, the embedding depth of the water distribution pipe 51 can be reduced accordingly.
However, as described above, since the drilling machine for drilling the branch hole 70 in the pipe body 52 needs to be attached to the attachment part 66 of the water faucet 54 with a saddle, the attachment part 66 cannot be omitted. It was difficult to reduce the height of the water tap 54.

Further, in order to shorten the length from the axis S of the pipe body 52 of the buried water distribution pipe to the highest portion of the water pipe 51, a water stop portion 60 is provided on the pipe body 52 of the buried water pipe. It is conceivable to install a water faucet 54 with a saddle so as to be oriented sideways with respect to 52. However, when the water faucet 74 with a saddle is attached sideways, the side surface (excavation surface) of the excavated ground comes close to the attachment portion 66 of the water faucet 74 with a saddle unless the excavation area is expanded. There arises a problem that it is difficult to perform the drilling work of attaching the drilling machine to the pipe body 52 and forming the branch hole 70 in the pipe body 52.
On the other hand, if the excavation area is expanded and the space near the attachment portion 66 of the water faucet 54 with a saddle is widened, the burden of excavation work and excavation costs increases, which is not preferable. For this reason, it was difficult to reduce the embedding depth of the water distribution pipe 51.

  Further, regarding the anticorrosion of the inner surface of the branch hole 70, even if the inner surface of the branch hole 70 is covered with the anticorrosion sleeve 73, it is insufficient for preventing water from entering between the anticorrosion sleeve 73 and the inner surface of the branch hole 70. Met. In particular, between the metal anticorrosion sleeve 73 and the inner surface of the branch hole 70, there is a possibility that so-called galvanic corrosion may occur due to the difference in potential between the two materials. For this reason, the anticorrosion measure by the anticorrosion sleeve 73 could not completely prevent the corrosion of the inner surface of the branch hole 70.

  Accordingly, the first object of the present invention is to reduce the embedding depth of the water distribution pipe without causing an increase in excavation work and cost, and corrosion of the inner surface of the branch hole formed in the pipe body of the water distribution pipe is prevented. The second problem is to prevent it more reliably.

  In order to solve the first problem, the present invention is provided with a branch hole for installing a water faucet in a pipe body, and the pipe body is located at the position of the branch hole in a state before being buried in the ground. A water faucet is provided, and the water faucet has a water flow hole that rises from the outer surface of the pipe so as to face the branch hole, a valve chamber provided at the tip of the water flow hole, and the valve And a valve body that opens and closes the connection from the water flow hole facing the branch hole to the water flow hole on the side of the valve chamber. A water distribution pipe with a water faucet, which is characterized by having a water stop valve provided with a water stop valve, was adopted.

  According to this configuration, since the branch hole is formed in the pipe body in a state before being buried in the ground, a drilling machine for forming the branch hole in the pipe body is diverted as in the prior art. There is no need to attach to the stopper. For this reason, installation of the attachment part for punches in a water faucet can be omitted, and the height of a water faucet can be made low. Therefore, when the pipe body of the water distribution pipe is buried in the ground, the embedding depth can be reduced without causing an increase in excavation work or excavation cost.

  In this configuration, it is possible to adopt a configuration in which the valve chamber of the water faucet has openings only on the connection portion side and the branch hole side. At this time, the valve body in the water stop valve can be formed with a communication hole capable of communicating from a water flow hole facing the branch hole to a water flow hole on the side of the valve chamber.

Conventionally, the valve body provided in the valve chamber of the water faucet not only communicates from the water passage hole on the tube body side to the water passage hole on the connection portion side, but also includes a drill hole in the mounting portion and a water passage hole on the tube body side. From the necessity of lowering the drill of the drilling machine from above to form a branch hole in the tube body, it was necessary to communicate from the drill hole to the water hole on the tube side. Therefore, the valve body provided in the valve chamber needs to be formed with communication holes that open in three directions.
However, in the water distribution pipe with a water faucet according to the present invention, the branch hole is formed in the pipe body in advance before the water faucet is attached, and it is not necessary to form the branch hole in the pipe body with a perforator as in the prior art. Therefore, the valve body in the water stop valve only needs to be communicated from the water passage hole facing the branch hole to the water passage hole on the side of the valve chamber. That is, it is sufficient for the valve body in the water stop valve to form a communication hole that opens in two directions. Therefore, the manufacturing cost of the water faucet can be reduced.

  In addition, when the water faucet is a water faucet with a saddle, that is, the flanges at both ends in the circumferential direction of the saddle formed in a semicircular shape, and the both ends in the circumferential direction of the band also formed in a semicircular shape. When the flange is attached to the tubular body by tightening with a bolt, for example, a displacement prevention protrusion for restricting axial movement of at least one of the saddle and the band can be provided on the outer surface of the tubular body. When the embedding depth of the water distribution pipe with a water faucet is reduced, it is thought that the vibration from the road surface will increase. This is because it can be prevented.

  Further, in order to solve the second problem, the present invention comprises a branch hole for installing a water faucet in a pipe body, and the branch hole is formed in a state before attaching the water faucet, A water distribution pipe provided with an anticorrosion coating continuously from the inner surface of the pipe body to the inner surface of the branch hole was employed.

  According to this configuration, since the anticorrosion film having the same performance as the anticorrosion film on the inner surface of the tubular body is applied to the inner surface of the branch hole, the anticorrosion film prevents water from touching the inner surface of the branch hole. For this reason, corrosion of the inner surface of the branch hole is more reliably prevented as compared with a conventional anticorrosion measure in which the inner surface of the branch hole is protected by the anticorrosion sleeve. In addition, as described above, when a branch hole is provided in advance in the tube body before being buried in the ground, it is advantageous for corrosion prevention of the inner surface of the branch hole.

  Examples of the anticorrosion coating include synthetic resin coating such as epoxy resin powder coating, liquid epoxy resin coating, polyethylene resin powder coating, epoxy-polyester resin powder coating, and solventless epoxy resin coating.

  In this configuration, the anticorrosion coating can also be applied to a chamfered portion provided at a ridge line portion between the inner surface of the branch hole and the outer surface of the tubular body.

Further, the anticorrosion coating extends from the inner surface of the branch hole to the outer surface of the tubular body, and the anticorrosion coating on the outer surface of the tubular body is attached to the tubular body when the water faucet is attached to the tubular body. It is possible to employ a water distribution pipe characterized in that the fluid to be supplied is applied to a portion that touches the outer surface of the pipe body through the branch hole.
According to this configuration, the anticorrosion coating prevents the fluid that has passed through the branch holes from touching the outer surface of the tube body, so that the generation of rust from the outer surface of the tube body can be suppressed.

As described above, in each configuration including the anticorrosion coating continuously from the inner surface of the pipe body to the inner surface of the branch hole, each water distribution pipe has a water faucet attached to the pipe body before being buried in the ground. It can be used as a distribution pipe with a water faucet.
Specifically, the pipe body is provided with a water faucet at the position of the branch hole before being buried in the ground, and the water faucet faces the branch hole from the outer surface of the pipe body. A water passage hole that rises, a valve chamber provided at the tip of the water passage hole, a connecting portion that forms a water passage hole extending laterally from the valve chamber, and the valve chamber facing the branch hole And a water stop valve provided with a valve body that opens and closes communication from the water hole to the water hole on the side of the valve chamber.

  According to this configuration, as in the case of the above-described configuration, since the branch hole is formed in the pipe body before installing the water faucet, the branch hole is formed in the pipe body as in the past. There is no need to attach a drilling machine to the water tap. For this reason, installation of the attachment part for punches in a water faucet can be omitted, and the height of a water faucet can be made low. Therefore, when the pipe body of the water distribution pipe is buried in the ground, the embedding depth can be reduced without causing an increase in excavation work or excavation cost. Further, the anticorrosion coating prevents water from coming into contact with the inner surface of the branch hole, so that corrosion is more reliably prevented.

  In each of these configurations, it is possible to employ a configuration in which the valve chamber of the water faucet has openings only on the connection portion side and the branch hole side. At this time, the valve body in the water stop valve can be formed with a communication hole capable of communicating from a water flow hole facing the branch hole to a water flow hole on the side of the valve chamber.

  In order to solve the first problem, the present invention uses a water distribution pipe with a water faucet having the above-described configuration, and the water faucet is arranged so that the water faucet is oriented laterally with respect to the tubular body. A method of burying a water distribution pipe with a water faucet that embeds a water distribution pipe with a water pipe can be adopted.

  According to this method of burying a water pipe with a water faucet, since the position of the water faucet is located in the lateral direction of the pipe body, the water faucet is connected to the pipe body in the buried water pipe as in the past. Compared with the case where it is mounted upward, the length from the axial center of the pipe of the water pipe with a water faucet to the highest part of the water pipe with the water faucet is shortened. As a result, the embedding depth of the distribution pipe with a water faucet can be reduced.

  In addition, branch holes are formed in the pipe body in advance before installing the water faucet, and it is not necessary to secure a space for drilling work by the drilling machine, so that the excavation work and the cost of drilling are not increased. Can do.

  Before embedding the water pipe with a water faucet, a method of embedding a water pipe with a water faucet in which a flexible pipe made of a flexible material is connected to the water faucet can be employed.

  If a distribution pipe with a water faucet is buried in the ground with the water faucet lying sideways with respect to the pipe body, as it is, when connecting the water pipe to the water faucet, unless a wide excavation area is secured, Since the side surface of the ground excavated in the vicinity of the lateral direction of the water faucet is located, it becomes difficult to connect the water supply pipe to the water faucet. However, if one end of the flexible pipe is attached to the water faucet as described above, the flexible pipe is bent to the upper side or the side of the relatively wide space, and the water supply pipe is connected to the other end of the flexible pipe. Can be connected. For this reason, the connection of the water supply pipe can be simplified without expanding the excavation range.

Further, before the connection of the flexible pipe, the distribution pipe with a water faucet is covered with a resin sleeve, and the flexible pipe faces the water faucet in an opening provided in the sleeve, and the opening It is preferable to connect to the water faucet via
This is because, after connecting the flexible pipe to the water faucet, if the water pipe with the water faucet is covered with a sleeve, the flexible pipe projects greatly from the pipe body of the water pipe with the water faucet, and the distribution with the water faucet is made. This is because it is necessary to cover the water tube with a sleeve, which makes it difficult to cover with the sleeve.

  According to the water distribution pipe with a water faucet of the present invention, it is not necessary to attach a drilling machine for forming a branch hole in the pipe body to the water faucet attachment part as in the prior art. For this reason, the height of the water faucet can be reduced by omitting the water faucet mounting portion. Therefore, the embedding depth of the water distribution pipe with a water faucet can be reduced.

  Further, according to the water distribution pipe of the present invention, since the anticorrosion film having the same performance as the anticorrosion film on the inner surface of the tubular body is applied to the inner surface of the branch hole, water contacts the inner surface of the branch hole by the anticorrosion film. This prevents the corrosion of the inner surface of the branch hole more reliably.

  Further, according to the method of burying a water pipe with a water faucet of the present invention, since the water pipe with a water faucet is buried so that the water faucet is oriented sideways with respect to the pipe body, Compared to the case where a water faucet is attached to the water pipe upward, the length from the tube axis of the water pipe with the water faucet to the highest part of the water pipe with the water faucet is shortened. The embedding depth of the water pipe with a faucet can be reduced. Furthermore, if a flexible pipe is used as the water supply pipe connected to the water faucet, the connection of the water supply pipe can be simplified without expanding the excavation range.

The perspective view which shows the water pipe with a water stopper of 1st embodiment of this invention The water distribution pipe with a water tap of the embodiment is shown, (a) is a cross-sectional view of FIG. 1, (b) is a vertical cross-sectional view of FIG. 1 is a cross-sectional view showing a state in which the water distribution pipe with a water faucet of FIG. 1 is covered with a sleeve. The principal part longitudinal cross-sectional view which shows the state which connected the insertion port of the other distribution pipe with a water faucet to the receptacle of the water distribution pipe with a water faucet of FIG. 3 is a cross-sectional view showing a method of connecting a water supply pipe to a water faucet with a saddle through an opening provided in the sleeve of FIG. The perspective view which shows the water pipe with a water stopper of 2nd embodiment of this invention Longitudinal sectional view showing the water pipe of FIG. Fig. 7 is an enlarged cross-sectional view of the main part in the vicinity of the branch hole of the pipe body Fig. 6 is a cross-sectional view of the distribution pipe with a water faucet in Fig. 6 cut at the position of the water faucet with a saddle Fig. 9 is a cross-sectional view showing a state where the water distribution pipe with a water faucet of Fig. 9 is covered with a sleeve. 10 is a cross-sectional view showing a method of connecting a water supply pipe to a water faucet with a saddle through an opening provided in the sleeve of FIG. Fig. 9 is a cross-sectional view of the vicinity of a branch hole in which the anticorrosive coating of Fig. 9 is applied up to the position of the inner diameter of the gasket on the outer surface of the tubular body The perspective view which shows the water pipe with a water tap of 3rd embodiment of this invention FIG. 13 is a cross-sectional view showing a method of connecting a flexible pipe to a water faucet with a saddle through an opening of a sleeve covering the water pipe with water faucet of FIG. Cross-sectional view showing a water distribution pipe with a water faucet with a water faucet with a saddle with a water faucet attached to both the saddle and the band. Cross-sectional view showing a conventional water pipe 16 is a cross-sectional view showing a state where the inner surface of the branch hole of the water distribution pipe of FIG.

  A water distribution pipe with a water faucet 31 according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 5. As shown in FIG. 1, a water pipe 31 with a water tap is connected to a water pipe made of ductile cast iron (JIS G5526, JWWA G113) provided with a receiving port 3 at one end of a cylindrical pipe body 2. Is attached. Although the straight pipe is used for the pipe body 2 in FIG. 1, a deformed pipe (JIS G5527) such as a curved pipe or a T-shaped pipe may be used. Further, although the K-shaped joint is used for the receiving port 3 in FIG. 1, other types of joints such as an SII-type joint and a T-type joint may be used (JIS G5527).

  As shown in FIGS. 2 (a) and 2 (b), the pipe body 2 is formed with a branch hole 5 for attaching a water faucet that penetrates in the radial direction in the center in the axial direction. The branch hole 5 is formed in a circular shape in plan view. The ridge line portion between the inner surface of the branch hole 5 and the inner surface 2 a of the tube body 2, and the space between the inner surface of the branch hole 5 and the outer surface of the tube body 2. A chamfered portion (not shown) is provided in each ridge line portion.

Further, as shown in FIG. 2A, the pipe body 2 has an anticorrosion coating which is a synthetic resin coating such as epoxy resin powder coating or liquid epoxy resin coating on the entire inner surface 2a and the entire inner surface of the branch hole 5. 8 is given. The anticorrosion coating 8 is continuously applied from the inner surface 2a of the tube body 2 to the inner surface of the branch hole 5 beyond the chamfered portion, and further reaches the outer surface of the tube body 2 beyond the chamfered portion. In this embodiment, the anticorrosion coating 8 is applied to the entire surface of the outer surface of the tubular body 2 that is in contact with the water faucet 30 described later and the entire portion that comes into contact with water.
Thereby, the anticorrosion coating 8 on the inner surface of the branch hole 5 and the outer surface of the tube body 2 has the same performance as the anticorrosion coating 8 on the inner surface 2a of the tube body 2. An anticorrosion coating 8 (not shown) is also applied to the inner surface of the receiving port 3.

  Here, the coating of the tube body 2 is performed, for example, by first applying the anticorrosion coating 8 to the entire inner surface of the branch hole 5 and a necessary portion of the outer surface of the tube body 2, and then to the entire inner surface 2 a of the tube body 2. Apply. Next, after the anticorrosion coating 8 on the inner surface of the branch hole 5 and the anticorrosion coating 8 on the inner surface 2a of the tubular body 2 are cured, the entire outer surface of the tubular body 2 is coated with an outer surface (not shown). In addition, even if the pipe body 2 is a deformed pipe, it can coat by the same procedure as the case where the pipe body 2 is a straight pipe.

  The film thickness of the anticorrosion coating 8 is 300 μm or more for the inner surface 2a of the tube body 2, and the entire inner surface of the branch hole 5 and necessary portions of the outer surface of the tube body 2 are made of epoxy resin powder coating and liquid epoxy resin coating. In any case, it is 80 μm or more, preferably 100 μm or more, and more preferably 150 μm or more.

  As shown in FIG. 1, the water faucet 30 of this embodiment is directly fixed to the position of the branch hole 5 provided in advance in the tube body 2 with a bolt 33 a without using a saddle as in the prior art. Is. When the material of the bolt 33a is stainless steel, it is preferable that a part or all of the bolt 33a is covered with an epoxy resin, a fluororesin, a polyamide resin, a polyethylene resin, a polyethylene terephthalate resin or the like as a galvanic corrosion countermeasure.

  The fixing structure of the water faucet 30 is provided with a bulging portion 42 protruding outward at the position of the branch hole 5 on the outer surface of the tube body 2. The base portion 33 of the water faucet 30 is fixed to the end surface on the protruding side of the bulging portion 42 with a bolt 33a. If it does in this way, it will prevent reliably that the water tap 30 will shift | deviate from the position of the branch hole 5 by alignment with the volt | bolt 33a and a bolt hole. As described above, the anticorrosion coating 8 is applied to the entire inner surface of the branch hole 5 and the entire end surface of the bulging portion 42 facing the water faucet 30 side.

  The water faucet 30 includes a water passage hole 36 facing the branch hole 5 of the pipe body 2, a valve chamber 32 in which a spherical space is formed at the tip of the water passage hole 36, and a lateral side from the valve chamber 32. And a connection portion 34 formed with a water passage hole 35 extending in the vertical direction. The water holes 35 and 36 may be part of the valve chamber 32, respectively.

  In this embodiment, the valve chamber 32 has openings (water passage holes 35, 36) only on the connection part 34 side and the branch hole 5 side. A valve body 37 is rotatably provided in the valve chamber 32 to constitute a water stop valve. This water stop valve is a ball valve in which a valve body 37 is formed in a spherical shape.

A communication hole 38 is formed in the valve body 37 of the water stop valve so as to communicate from the water flow hole 36 facing the branch hole 5 to the water flow hole 35 on the side of the valve chamber 32. The spindle 39 provided so as to protrude laterally from the water stop portion 40 that houses the water stop valve is rotated by 90 degrees, so that the water flow to the side of the valve chamber 32 from the water flow hole 36 that faces the branch hole 5. The communication with the hole 36 can be opened and closed.
In this embodiment, the water faucet 30 employs a spherical ball valve as the valve body 37, but the valve body may employ a cock having a columnar shape or a truncated cone shape.

  The water pipe 31 with a water tap configured as described above is buried in the ground as follows, for example. First, the water faucet 30 is configured so that the communication hole 38 of the valve body 37 does not communicate with the water communication hole 36 facing the branch hole 5 and the water communication hole 36 on the side of the valve chamber 32, that is, the water stop valve. Keep it closed. Next, in order to prevent corrosion and electric corrosion of the water distribution pipe 31 with a water faucet due to soil, groundwater, etc., as shown in FIG. A sleeve 23 made of resin such as polyethylene is covered, and the sleeve 23 is fixed to the outer periphery of the tube body 2 with a rubber band (not shown).

  And as shown in FIG. 3, the water distribution pipe 31 with a water stopper is embed | buried in the ground so that a water stop valve may become sideways with respect to the pipe body 2. As shown in FIG. Next, as shown in FIG. 4, the insertion port 24 of another distribution pipe 31 with a water faucet is inserted into the buried outlet 3 of the water distribution pipe 31 with a water faucet. A rubber ring 25 is interposed between the outlet 3 and the rubber ring 25 is pressed by a push ring 26 via a bolt 27, whereby a subsequent water distribution is made in the receiving port 3 of the water pipe 31 with a preceding water faucet. While fixing the insertion port 24 of the water pipe 31 with a stopper, watertightness is maintained. In this way, the connection of the subsequent distribution pipe 31 with a water faucet is repeatedly connected to the buried water distribution pipe 31 with a water faucet. At this time, the normal pipe body 2 that does not include the branch hole 5 or the water faucet 30 is interposed in a place where the water faucet 30 does not need to be provided.

  Reference numeral 41 shown in FIG. 2 and the like is a gasket (packing). By this gasket 41, tap water passing through the branch hole 5 from the pipe body 2 is disposed between the outer surface of the pipe body 2 and the water faucet 30. It prevents it from flowing out through the gap.

  When supplying the tap water to a new consumer by branching the pipe from the embedded distribution pipe 31 with a water faucet, as shown in FIG. 5, the position facing the water passage hole 35 of the sleeve 23 is set. The water supply pipe 22 is connected to the connection part 34 of the water faucet 30 through this opening part 23a. Then, the edge of the opening 23a is fastened to the outer surface of the water supply pipe 22 with a rubber band (not shown), and the opening 23a is closed. Thereafter, by rotating the spindle 39 of the water faucet 30 by 90 degrees, the communication hole 38 of the valve element 37 is opened from the water flow hole 36 on the branch hole 5 side to the water flow hole 36 on the connection part 34 side. Thereby, it becomes possible for tap water to flow into the water supply pipe 22 from the pipe body 2 of the distribution pipe 31 with a water faucet through the branch hole 5, and to supply tap water to a new consumer.

  Moreover, in this embodiment, the water distribution pipe 31 with a water faucet is embed | buried so that the water faucet 30 may become sideways with respect to the pipe body 2, and the front-end | tip part (water faucet 30 of the water supply pipe 22 is embedded. The flexible tube 43 is used as the material of the tip portion on the side connected to the head. The flexible tube 43 is made of a flexible material and is bendable.

  When such a flexible pipe 43 is used, the flexible pipe 43 is connected to the connecting portion 34 of the water faucet 30, so that the flexible pipe 43 is bent upward or laterally of the tubular body 2 having a relatively large space. Then, the direction can be changed, and the subsequent water supply pipe 22 can be connected to the other end of the flexible pipe 43. For this reason, the connection of the water supply pipe 22 can be simplified without expanding the excavation range to the side.

  In addition, since the distribution pipe 31 with a water faucet has the branch hole 5 and the water faucet 30 already provided in the pipe body 2 when the water distribution pipe is buried in the ground, the conventional water faucet with a saddle is provided. As in the case of the 54 water faucet 50 (see FIGS. 16 and 17), the drilling attachment portion 66, the drill through-hole 65, and the like are unnecessary, and the configuration can be simplified.

In addition, since this anti-corrosion coating 8 which has the performance similar to the anti-corrosion coating 8 of the inner surface 2a of the pipe body 2 is given over this inner surface of the branch hole 5 in this water pipe 31 with a water faucet, this anti-corrosion coating 8 It is prevented that tap water contacts the inner surface of the branch hole 5.
For this reason, compared with the case where the inner surface of the branch hole 5 is protected by the anticorrosion sleeve 73 (refer FIG. 17) formed with corrosion-resistant materials, such as rubber | gum, resin, stainless steel, and a gun metal, as compared with the past, Corrosion of the inner surface is more reliably prevented.

  Moreover, since the water distribution pipe 31 with a water faucet has only the hole diameter of the branch hole 5 small by the film thickness of the anticorrosion coating 8, the hole diameter of the branch hole 5 can be kept substantially the same as the hole diameter. .

  Further, the water distribution pipe 31 with a water faucet has a branch hole 5 formed in advance in a state before the water stop portion 40 by the water faucet 30 is attached to the pipe body 2, and the anticorrosion coating 8 is formed on the inner surface of the branch hole 5. Therefore, when connecting the water supply pipe 22 to supply tap water to a new customer, the branch hole 5 is formed on the site as in the past, or the inner surface of the branch hole 5 is protected by the anticorrosion sleeve 73. There is no need to do. For this reason, the piping work of the water supply pipe 22 when supplying tap water to a new consumer can be simplified.

Moreover, according to the embedding method of the water distribution pipe with a water faucet using this water distribution pipe with a water faucet 31, the water stop part 40 of the water faucet 30 protrudes sideways with respect to the pipe body 2; The embedding depth of the water pipe 31 with a plug can be made shallow, and excavation work and excavation cost can be reduced.
Furthermore, since the spindle 39 protrudes in the tube axis direction (the tube axis direction of the tube body 2) with respect to the water faucet 30, when the connection direction between the receiving port 3 and the insertion port 24 is reversed, The spindle 39 is always arranged in the tube axis direction (in the tube axis direction of the tube body 2) so as not to face downward. For this reason, the operation of the spindle 39 is not hindered regardless of the orientation of the water distribution pipe 31 with a water faucet.

In this embodiment, the anticorrosion coating 8 is continuously applied from the inner surface 2a of the tube body 2 to the inner surface of the branch hole 5, as shown in FIG. 42 to the water faucet 30 side). That is, the anticorrosion coating 8 is also applied to the entire outer surface of the pipe body 2 that is in contact with the water faucet 30 and that is in contact with tap water.
Since the entire portion where the tap water that has passed through the branch hole 5 touches the outer surface of the pipe body 2 is covered with the anticorrosion coating 8, corrosion from the outer surface of the pipe body 2 can be prevented more reliably. When the anticorrosion coating 8 is applied to the outer surface of the tubular body 2 in this way, it is desirable that the outer surface coating of the tubular body 2 does not overlap the anticorrosion coating 8 on the outer surface of the tubular body 2.

  Moreover, in the said embodiment, although the one branch hole 5 and the water tap 30 were provided in the one pipe body 2, you may provide two or more the branch holes 5 and the water tap 30 in the one pipe body 2. FIG. . In this case, each branch hole 5 may be provided on a straight line along the axial direction of the tube body 2 or may be formed at a position shifted in the circumferential direction from the straight line in the axial direction of the tube body 2. Good. In short, the formation position and the number of the branch holes 5 in the tube body 2 are not limited.

  A water distribution pipe with a water faucet according to a second embodiment of the present invention will be described with reference to FIGS. The water distribution pipe 1 with a water faucet of this embodiment is a ductile iron water distribution pipe (JIS G5526, JWWA G113) provided with a receiving port 3 at one end of a cylindrical pipe body 2 as in the above-described embodiment. A water faucet 4 with a saddle is attached. Although the pipe 2 is a straight pipe in FIG. 6, a deformed pipe (JIS G5527) such as a curved pipe or a T-shaped pipe may be used. Further, although the K-shaped joint is used for the receiving port 3 in FIG. 1, other types of joints such as an SII-type joint and a T-type joint may be used (JIS G5527).

  As shown in FIG. 7, the pipe body 2 is formed with a branch hole 5 for attaching a water faucet that penetrates in a radial direction in a central portion in the axial direction. The branch hole 5 is formed in a circular shape, and as shown in FIG. 8, a ridge line portion between the inner surface of the branch hole 5 and the inner surface 2 a of the tube body 2, the inner surface of the branch hole 5, and the outer surface of the tube body 2. Chamfered portions 6 and 7 are provided on the ridge line between the two.

  Further, on the tube body 2, an anticorrosion coating 8, which is a synthetic resin coating such as epoxy resin powder coating or liquid epoxy resin coating, is branched from the inner surface 2 a of the tube body 2 over the entire inner surface 2 a and the entire inner surface of the branch hole 5. The inner surface of the hole 5 is continuously applied, and the anticorrosion coating 8 on the inner surface of the branch hole 5 extends from the chamfered portion outer diameter portion 6a to the chamfered portion outer diameter portion 7a. Thereby, the anticorrosion coating 8 on the inner surface of the branch hole 5 has the same performance as the anticorrosion coating 8 on the inner surface 2a of the tubular body 2. An anticorrosion coating 8 (not shown) is also applied to the inner surface of the receptacle 3.

  Here, for example, the coating of the tube body 2 is performed by first applying the anticorrosion coating 8 to the entire inner surface of the branch hole 5 and then applying the anticorrosion coating 8 to the entire inner surface 2 a of the tube body 2. Next, after the anticorrosion coating 8 on the inner surface of the branch hole 5 and the anticorrosion coating 8 on the inner surface 2a of the tubular body 2 are cured, the entire outer surface of the tubular body 2 is coated with an outer surface (not shown). In addition, even if the pipe body 2 is a deformed pipe, it can coat by the same procedure as the case where the pipe body 2 is a straight pipe.

  The film thickness of the anticorrosion coating 8 is the same as in the above-described embodiment. That is, the inner surface 2a of the tube body 2 is 300 μm or more, and the entire inner surface of the branch hole 5 and the necessary portions of the outer surface of the tube body 2 are both 80 μm or more, preferably both of the epoxy resin powder coating and the liquid epoxy resin coating. Is preferably 100 μm or more, more preferably 150 μm or more.

  As shown in FIG. 6, the saddle-equipped water faucet 4 has a saddle 11 a and a band 11 b formed in a semicircular shape, and a water stop portion 15 having a water faucet 10 at the center of the saddle 11 a. Are integrated. The water faucet 4 with a saddle may be one in which the water faucet 10 is attached to the water faucet mounting hole formed at the center of the saddle 11a by screw engagement.

  9, the saddle-equipped water faucet 4 applies the saddle 11a to the position of the branch hole 5 on the outer surface of the pipe body 2, and at the same time shifts from the position of the saddle 11a by a half circumference in the circumferential direction. The band 11b is applied, and in this state, the bolts 14a are inserted into both end flanges 12 and 13 formed at both ends of the saddle 11a and the band 11b, and are tightened with nuts 14b to be attached to the tube body 2.

Further, the saddle-equipped water faucet 4 includes a water passage hole 16 that rises from the outer surface of the pipe body 2 to face the branch hole 5, a valve chamber 17 in which a spherical space is formed at the tip of the water passage hole 16, and A connecting portion 19 having a water passage hole 18 extending laterally from the valve chamber 17.
In this embodiment, the valve chamber 17 has openings (water passage holes 18 and 16) only on the connection part 19 side and the branch hole 5 side. A valve body 20 is rotatably provided in the valve chamber 17 to constitute a water stop valve. This water stop valve is a ball valve in which the valve body 20 is formed in a spherical shape.

  The valve body 20 of the water stop valve has a bent communication hole 21 extending in two directions so as to be able to communicate from the water hole 16 facing the branch hole 5 to the water hole 18 on the side of the valve chamber 17. Is formed. By rotating a spindle 29 provided on the side opposite to the connecting portion 19 by 90 degrees, communication from the water hole 16 facing the branch hole 5 to the water hole 18 on the side of the valve chamber 17 is opened and closed. It can be done. In this embodiment, the saddle-equipped water faucet 4 employs a valve body 20 that is a spherical ball valve, but the valve body may employ a columnar or truncated cone-shaped cock. .

  The water pipe 1 with the water tap configured as described above is buried in the ground as follows, for example. First, as shown in FIG. 10, the saddle-equipped water faucet 4 keeps the communication hole 21 of the valve body 20 closed with respect to the water flow hole 16 facing the branch hole 5. Next, in order to prevent corrosion and electric corrosion of the water distribution pipe 1 with a water faucet due to soil or groundwater, a portion provided with the water faucet 10 of the water distribution pipe 1 with a water faucet is replaced with a sleeve 23 made of resin such as polyethylene. The sleeve 23 is fixed to the outer periphery of the tubular body 2 with a rubber band (not shown).

  And as shown in FIG. 6, the water distribution pipe | tube 1 with a water stopper is embed | buried in the ground so that the water stop part 15 may become upward with respect to the pipe body 2. As shown in FIG. Next, another water distribution pipe 1 with a water faucet or an insertion port 24 of a normal pipe body 2 is inserted into the receiving port 3 of the buried water pipe 1 with a water faucet, and the connection is repeated and connected. The points to be matched are the same as in the above-described embodiment (see FIG. 4).

  The gasket 28 in FIG. 10 is attached to the large diameter portion formed at the lower end of the water passage hole 16, and the tap water passing through the branch hole 5 from the tubular body 2 is piped by this gasket 28. It is prevented from flowing out through the space between the outer surface of the body 2 and the inner surface of the saddle 11a.

  When supplying the tap water to a new consumer by branching the pipe from the buried distribution pipe with a water faucet 1, as shown in FIG. The opening 23a is cut and opened, and the water supply pipe 22 is connected to the connecting portion 19 of the water faucet 4 through the opening 23a. Then, the opening 23a is closed with a rubber band (not shown). Thereafter, the communication hole 21 of the valve body 20 is opened from the water passage hole 16 on the branch hole 5 side to the water passage hole 18 on the connection portion 19 side by rotating the spindle 29 of the water faucet 4 by 90 degrees. Thereby, it becomes possible for tap water to flow into the water supply pipe 22 from the pipe body 2 of the distribution pipe 1 with a water stopper through the branch hole 5, and can supply tap water to a new consumer.

Also in the water distribution pipe 1 with a water faucet, the anticorrosion coating 8 having the same performance as the anticorrosion coating 8 on the inner surface 2a of the pipe body 2 is applied over the entire inner surface of the branch hole 5, so The tap water is prevented from contacting the inner surface of 5.
Moreover, since the distribution pipe 1 with a water faucet has only the hole diameter of the branch hole 5 small by the film thickness of the anticorrosion coating 8, the hole diameter of the branch hole 5 can be kept substantially the same as the hole diameter. .

  Moreover, since the water distribution pipe 1 with a water faucet formed the branch hole 5 in the state before attaching the water stop part 15 to the pipe body 2, and applied the anticorrosion coating 8 to the inner surface of the branch hole 5, the water supply pipe 22 When connecting taps and supplying tap water to a new consumer, it is not necessary to form the branch holes 5 on site or to protect the inner surfaces of the branch holes 5 with the anticorrosion sleeve 73 as in the prior art. Therefore, the piping work of the water supply pipe 22 when supplying tap water to a new consumer can be simplified.

  Moreover, the water distribution pipe 1 with a water faucet has a valve chamber 17 having openings only on the connection part 19 side and the branch hole 5 side, and a punching machine for forming the branch hole 5 in the pipe body 2 as in the prior art. There is no mounting portion for attaching the saddle-equipped water faucet 4. For this reason, the height of the water faucet 4 with a saddle is low, the embedding depth of the water distribution pipe 1 with a water faucet can be made shallow, and excavation work and excavation cost can be reduced. Moreover, the manufacturing cost of the water faucet 4 with a saddle can also be reduced.

Further, as shown in FIG. 12, the anticorrosion coating 8 extends from the inner surface of the branch hole 5 to the outer surface of the tube body 2, and the anticorrosion coating 8 on the outer surface of the tube body 2 is the gasket inner diameter portion 28 a on the outer surface of the tube body 2. It is given continuously to the position. The anticorrosion coating 8 on the outer surface of the tubular body 2 may be applied up to the position of the gasket outer diameter portion 28b on the outer surface of the tubular body 2.
Since the entire portion where the tap water that has passed through the branch hole 5 touches the outer surface of the pipe body 2 is covered with the anticorrosion coating 8, corrosion from the outer surface of the pipe body 2 can be prevented more reliably. When the anticorrosion coating 8 is applied to the outer surface of the tubular body 2 in this way, it is desirable that the outer surface coating of the tubular body 2 does not overlap the anticorrosion coating 8 on the outer surface of the tubular body 2. Moreover, in order to suppress the corrosion from the outer surface of the tubular body 2, the branch hole 5 may have the same diameter as the gasket inner diameter portion 28a.

  Also in this embodiment, one branch hole 5 and one water faucet 10 are provided in one pipe body 2, but a plurality of branch holes 5 and water taps 10 may be provided in one pipe body 2. In this case, each branch hole 5 may be provided on a straight line along the axial direction of the tube body 2 or may be formed at a position shifted in the circumferential direction from the straight line in the axial direction of the tube body 2. Good. The formation position and number of the branch holes 5 in the tube body 2 are not limited.

  A third embodiment of the present invention will be described with reference to FIGS. This embodiment is a method of embedding a water pipe with a water faucet using a water pipe with a water faucet in which the branch hole 5 and the water faucet are previously provided in the pipe body 2 before being embedded in the ground.

  In this embodiment, as shown in FIG. 13, a water distribution pipe 51 with a water faucet equipped with a conventional water faucet 54 with a saddle is used. In this embodiment, the water stop part 60 provided with the water faucet 50 is embed | buried so that it may protrude sideways with respect to the pipe body 2. As shown in FIG. Further, a flexible pipe 43 made of a flexible material is employed as the water supply pipe 22.

In place of the water pipe 51 with a water tap, the water pipe 31 with a water tap provided with the water tap 30 of the first embodiment or the water pipe 4 with a saddle of the second embodiment is used. You may arrange | position so that the water stop part of a water stopper may protrude sideways with respect to the pipe body 2, using the provided water distribution pipe 1 with a water stopper.
Hereinafter, for the water faucet 54 with a saddle, the same reference numerals are assigned to the corresponding portions, and the portions corresponding to the first embodiment and the second embodiment are described in the respective embodiments. The same reference numerals are used and the description thereof is omitted.

  As shown in FIG. 14, the water distribution pipe 51 with a water faucet 51 is covered with a resin sleeve 23 provided with an opening 23a in advance, and the opening 23a is saddled before the flexible pipe 43 of the water supply pipe 22 is connected. It is made to face the drill hole 65 of the attached water faucet 54. And the flexible pipe 43 is connected to the attachment part 66 of the water stopper 54 with a saddle via the opening part 23a. In this embodiment, the drill hole 65 functions as a water hole 65 to the water supply pipe 22, and the attachment part 66 functions as a connection part 66 for connecting the water supply pipe 22.

  In addition, when using the water distribution pipe 31 with a water tap provided with the water tap 30 similar to 1st embodiment, the flexible pipe 43 is connected to the connection part 34 of the water tap 30. Moreover, when using the distribution pipe 1 with a water tap provided with the water tap 4 with a saddle similar to 2nd embodiment, the connection part 19 of the water tap 10 of the water tap 4 with a saddle is used for the flexible pipe 43. Connect to.

  Thereafter, as shown in FIG. 13, a water distribution pipe 51 with a water faucet is buried in the ground so that the water stop portion 60 is oriented laterally with respect to the pipe body 2. The succeeding water distribution pipe 51 with a water stopper or the pipe body 2 is connected.

  When supplying the tap water to a new consumer by branching the pipe from the buried distribution pipe 51 with a water faucet, the water supply pipe 22 further connected to the flexible pipe 43 is connected. Thereby, it becomes possible for tap water to flow from the pipe body 2 of the distribution pipe 51 with a water faucet through the branch hole 5 to the water supply pipe 22, and supply tap water to a new consumer.

  According to this method of burying a water pipe with a water faucet, the water pipe with a water faucet 51 is buried so that the water stop portion 60 is lateral to the pipe body 2. The position 66 is located in the lateral direction of the pipe body 2, and the highest portion of the embedded distribution pipe 51 with a water faucet is the ends 56a and 57a of both end flanges 56 and 57 of the saddle 55a and the band 55b. Therefore, compared with the case where the water distribution pipe 51 with a water faucet is embedded so that the water stop part 60 faces upward with respect to the pipe body 2, the axial center S of the pipe body 2 of the water pipe 51 with the water faucet embedded. To the highest portion of the water pipe 51 with a water faucet becomes shorter, and the embedding depth of the water pipe 51 with a water faucet can be made shallower.

13 and 14, the saddle-equipped water faucet 54 in which the water stop portion 60 is attached to the saddle 55a is used. However, as shown in FIG. It is also possible to use a saddle-equipped water faucet 74 that is fixed and has water stop portions 60, 60 attached to both saddles 53, 53, respectively. If it does in this way, when supplying a new tap water to the consumer on the both sides of a horizontal direction with respect to the pipe body 2, it is only necessary to attach one watering tap 74 with a saddle to the pipe body 2.
Moreover, compared with the case where the water distribution part 41 with a water faucet is embed | buried so that the water stop parts 60 and 60 may be located in the up-down direction both sides with respect to the pipe body 2, the water distribution pipe with a water faucet without deeply excavating land 51 can be embedded.

1,31,51 Water distribution pipe with water faucet 2,52 Tube body 2a Inner surface 4,54,74 Water faucet with saddle 5,70 Branch hole 6,7 Chamfer 6a, 7a Outer diameter part 8,75 Anticorrosion coating 10 , 30, 50 Water faucet 11a, 55a Saddle 11b, 55b Band 12 Both end flange 13 Both end flange 14a Bolt 14b Nut 15, 40, 60 Water stop portion 16, 36, 61 Water passage hole 17, 32, 62 Valve chamber 18, 35, 63 Water holes 19, 34, 64 Connection portions 20, 37, 67 Valve bodies 21, 38, 68 Communication holes 22, 72 Water supply pipe 23 Sleeve 23a Opening portion 24 Insertion port 25 Rubber ring 26 Push ring 27 Bolt 28 Gasket 28a Gasket inner diameter portion 29, 39, 69 Spindle 33 Base portion 33a Bolt 42 Swelling portion 43 Flexible pipe 56, 57 Flange 58a Bolt 58b Door 65 drill holes (water passage holes)
66 Mounting part (connection part)
71 Lid 73 Anticorrosion sleeve

Claims (7)

The pipe body (2) is provided with a branch hole (5) for installing a water faucet, and the branch hole (5) is formed in a state before the water tap (30) is mounted, and the pipe body (2) continuously from the inner surface (2a) over the inner surface of the branch bore (5) and facilities the anticorrosion coating (8) of,
The anticorrosion coating (8) extends from the inner surface of the branch hole (5) to the outer surface of the tube (2), and the anticorrosion coating (8) on the outer surface of the tube (2) 30) is attached to the pipe body (2), the fluid supplied to the pipe body (2) is applied to the portion that touches the outer surface of the pipe body (2) through the branch hole (5). And
A bulging portion (42) protruding outward is provided at the position of the branch hole (5) on the outer surface of the tubular body (2), and the water faucet is provided on the protruding end surface of the bulging portion (42). The water faucet (30) is fixed to the bulging part (42) with bolts (33a) by superimposing the base part (33) of (30), and the pipe (2) is buried in the ground A water distribution pipe with a water faucet , wherein the water faucet (30) is provided in front of the branch hole (5) . The anticorrosion coating (8) is applied to the entire inner surface of the branch hole (5) and the entire end surface of the bulging portion (42) facing the water faucet (30). The water pipe with a water tap according to claim 1. The water faucet (30) is provided at the end of the water passage hole (36) rising from the outer surface of the pipe body (2) to face the branch hole (5), and at the tip of the water passage hole (36). A valve chamber (32), a connecting portion (34) in which a water passage hole (35) extending laterally from the valve chamber (32) is formed, and the valve chamber (32) is opposed to the branch hole (5). And a water stop valve provided with a valve body (37) for opening and closing communication from the water passage hole (36) to the water passage hole (35) on the side of the valve chamber (32). A water distribution pipe with a water faucet according to claim 1 or 2. 4. The water divider according to claim 3 , wherein the valve chamber (32) of the water faucet (30) has openings only on the connection part (34) side and the branch hole (5) side. Water pipe with stopper. A distribution pipe (31) with a water faucet according to claim 3 or 4 , wherein the water faucet (30) is buried in the ground so that the water faucet (30) is lateral to the pipe body (2). How to bury water pipes with water faucets. A flexible pipe (43) made of a flexible material is connected to the water faucet (30) before the water pipe (31) with the water faucet is embedded in the ground. 5. A method for burying a water pipe with a water tap according to 5 . Before the flexible pipe (43) is connected, the water distribution pipe (31) with a water faucet is covered with a resin sleeve (23), and the flexible pipe (43) is an opening provided in the sleeve (23). part of (23a) to face the said diversion plug (30), with diversion plug according to claim 6, characterized in that connected to the diversion plug through the opening (23a) (30) How to bury water pipes.

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