JPH10306895A - Snap tap with saddle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve earthquake resistance by reducing the height of a snap tap body as much as possible, to prevent the occurrence of electrical contact of a supply water pipe with a saddle and a cast iron main pipe when the supply water pipe is a metallic pipe, and prevent the occurrence of corrosion due to contact of a main pipe with a different kind of a metal. SOLUTION: A ball 20 having a three-way port 20a is rotatably arranged in a snap tap body 13 through a stem 21, and an annular holding body 25 is helically mounted on the snap tap body 13. A pair of ball seats are located between the annular holding body 25 and the internal part of the snap tap body 13 to form a cut-off mechanism 19. The cut-off mechanism 19 is formed such that structure independent from the saddle member 12 and a different function are provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water tap with a saddle for branching a main pipe of a water supply pipe to a water supply branch pipe.

[0002]

2. Description of the Related Art In general, when branching a water supply branch from a water main, first, a water tap is attached to a branch position of the water main with a saddle, and then a piercing tool is attached to an installation opening of the water tap. With the stopcock provided inside the faucet open, insert a piercing tool to pierce the branch position of the water main,
Then, after removing the perforator, the water stopcock is closed. Then, an insertion tool having an anticorrosion sleeve attached to the lower end portion was fixed to the attachment port of the water faucet, and the anticorrosion sleeve was inserted into the perforated hole with the water stopcock opened, and the insertion tool was pulled out from the water faucet. At times, the water stopcock is closed, the mounting opening is covered with a cap, and finally the water stopcock is opened to perform the branching operation.

In general, there are a flange type and a screw type for connecting a water faucet having a water stopping mechanism for a ball valve to a saddle, and the former water type with a flange type ball type saddle shown in FIG. The stopper is provided with a sheet receiving portion 2 on the saddle 1 itself, and the sheet receiving portion 2 and the sheet receiving portion 4 of the water faucet main body 3 are provided.
The ball valve 3 is provided with a water stop mechanism in which a ball 5 having a T-shaped through-hole 5a is rotatably incorporated through the ball seats 3a and 3b.
Is connected to the saddle 1 via a bolt 6a.

On the other hand, the latter water tap with screw type saddle shown in FIG. 4 has a cast iron saddle part 7 and a water tap body 8 made of bronze or stainless steel, which are electrically connected by screws 9. I have. The water faucet body 8 has a T-shaped through hole 1.
There is provided a water stop mechanism in which a ball 10 having Oa is rotatably contained.

[0005]

However, in the case of a flange type saddle water faucet in which a saddle and a water faucet main body are combined to form a water stopping mechanism, the painted surface of the cast iron saddle comes into contact with water. From the viewpoint of durability, it is necessary to secure a certain thickness of the coating film, but since the saddle is provided with a seat receiving portion of the ball valve, the operating torque becomes unstable due to the variation of the coating film, Water leakage is a concern. Accordingly, a backup rubber sheet is used for the sheet receiving portion, for example. In addition, if the branching direction needs to be changed depending on the construction site, the water stop section must be disassembled, which is not possible at the site level.

On the other hand, in the case of the screw type, although the water stopping mechanism is independent, the saddle made of cast iron and the water stopping mechanism made of bronze or stainless steel are electrically connected to each other by screw connection, so that dissimilar metals are used. Possible corrosion. In the case of the screw type, the distance from the water main to the branch port becomes large, and when an external force such as an earthquake is applied, excessive torque is applied and the screw neck is broken. Even in the case of the screw type, since the water stopping portion and the saddle are usually bonded and fixed, there is a problem that the direction cannot be changed.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and has as its object to reduce the height of a water faucet body as much as possible to improve earthquake resistance. A water pipe having a metal pipe, a water pipe having a saddle and a saddle for preventing electrical contact with a saddle and a cast iron main pipe and preventing corrosion of the main pipe caused by contact of dissimilar metals. .

[0008]

To achieve the above object, the invention according to claim 1 is directed to a water tap with a saddle in which a water tap main body is connected to a saddle member fixed to a water main by a flange. The water stop mechanism built in the main body of the water faucet has a structure independent of the saddle member and has an independent function.

According to the second aspect of the present invention, a ball having a three-way port is rotatably provided inside the water faucet via a stem, and an annular holder is screwed to the water faucet. The water stopping mechanism was configured by interposing a pair of ball sheets inside the annular holder and the water faucet main body.

According to the third aspect of the present invention, the flange provided at the lower portion of the water faucet body is fixed to the saddle member via a plurality of bolts, and the spacing between the bolts is made equal to the saddle member. The joining direction of the flange portions to be joined can be appropriately selected and set.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a water tap with a saddle according to the present invention will be described below with reference to FIGS. In FIG. 1, a saddle member 12 is fixed to a branch position of a cast iron main pipe (water main pipe) 11 having a mortar lining layer 11a on an inner surface thereof. The saddle member 12 is formed by fixing a saddle 12a and a band 12b with bolts 12c. In this embodiment, the saddle member 12 formed of a cast iron material is coated with a resin powder.

A flange portion 14 provided at a lower portion of the water faucet body 13 is fixed to a support surface 12d formed on the saddle 12a of the saddle member 12 via a plurality of bolts 15. In this example, four bolts 15 are used to connect the bolts 15 at the same interval, and as shown in FIG. 3, the water faucet main body 13 can be changed direction at an angle of about 90 °. I have.

The water faucet main body 13 is provided with a mounting port 16 for attaching a piercing tool or an insertion tool, and a branch port 18 having a joint portion 17. Further, the water faucet body 13 has a structure independent of the saddle member 12. A water stop mechanism 19 having an independent function is provided.

In this water stop mechanism 19, a ball 20 having a three-way port 20a is rotatably provided via a stem 21, and one ball seat 22a is mounted on the ball 20 inside the water faucet body 13. , The other ball seat 22b
Is mounted on an upper step portion of an annular holder 25 screwed to a water outlet 23 of the water faucet body 13 via a seal ring 24. In the figure, reference numeral 26 denotes an anticorrosion sleeve,
6 is a perforated hole 29 formed in the cast iron main pipe 11 by pressing down together with the metal ring 28 inserted into the insertion tool 27.
Attach to 30 is a gasket, 31 is a step flange for slidingly guiding a piercing tool or the like provided on the annular holder 25,
32 is a cap for covering the mounting opening 16.

Next, the operation of the above embodiment will be described. Since the saddle member 12 has a structure independent of the water stopping mechanism 19 and is provided so as to have an independent function, the saddle member 12 does not come into contact with water and the coating film is not damaged by the fluid. The water stopping mechanism 19 can also be adjusted by attaching the ball seat 22b to an annular holding body 25 separate from the saddle and screwing the annular holding body 25 to the water faucet body 13, so that the water stopping mechanism 19 is completely a ball valve. It has the structure and function
Not only is it unaffected by paint, it also stabilizes operating torque and water stopping performance.

Further, since the distance between the bolts 15 of the flange portion 14 of the water faucet body 13 is the same, the flange portion 1
4 can be removed, for example, to change the branching direction on site at every 90 ° angle.

Further, the water faucet main body 13 is provided with a flange portion 14.
The contact between the supporting surface 12d provided on the saddle member 12a and the faucet main body 3 can be easily insulated by interposing a coating film or a resin. No electrical corrosion occurs. Further, unlike the conventional screw type water faucet, there is no screw joint, the height to the branch port 18 is small, and there is no constriction, so even if rotational torque or axial displacement is applied. There is no risk of displacement, and it has impact resistance.

[0018]

As is apparent from the above, since the saddle itself does not come into contact with water, it is possible to prevent the coating film from being damaged by the fluid, which is advantageous in terms of durability and hygiene.
In addition, since the water stopping mechanism forms an independent ball valve, it is not affected by the coating, the operating torque and the water stopping performance are stable, and, of course, the need for a backup rubber sheet is eliminated. In addition, since the water stopping mechanism is independent, the flange part can be removed and the branching direction can be changed even at the site level, so when the gas pipe etc. is unavoidable, the branching direction conversion is unavoidable Is also possible.

Further, since it is a flange type, the contact between the metal and the saddle can be easily insulated by interposing a coating film or a resin. Furthermore, since there is no screw joint, the height to the branch port becomes small, and even if a rotational torque or an axial displacement is applied by an external force such as an earthquake, the displacement is hardly made because the entire body is short. In addition, the overall shape of the water-stopping portion is advantageous in terms of strength because it has a lower overall height and has no constricted portion as compared with a screw type, and has excellent effects such as withstanding a strong impact.

[Brief description of the drawings]

FIG. 1 is a sectional view of a water tap with a saddle according to the present invention.

FIG. 2 is a side view of the water faucet in FIG. 1;

FIG. 3 is a plan view of the water tap in FIG. 1;

FIG. 4 is a front view showing a partial section of a conventional water tap with a screw-type saddle.

FIG. 5 is a front view showing a partial section of a conventional water tap with a flanged saddle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Water supply main pipe 12 Saddle member 13 Minute faucet main body 14 Flange part 19 Water stopping mechanism 20 Ball 25 Ring holder

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shigeki Matsubayashi 2040, Nagasaka Kamijo, Nagasaka-machi, Nagakoma-gun, Yamanashi Pref.

Claims (3)

[Claims] 1. A water faucet with a saddle in which a water faucet main body is connected to a saddle member fixed to a water main by a flange, wherein a water stop mechanism built in the water faucet main body is independent of the saddle member. A water tap with a saddle, characterized in that it has an independent function. 2. A ball having a three-way port is rotatably provided inside a water faucet body via a stem, and an annular holder is screwed onto the water faucet body. The water tap with a saddle according to claim 1, wherein a water stop mechanism is configured by interposing a pair of ball seats inside the main body. 3. A flange portion provided at a lower portion of a water faucet body is fixed to a saddle member via a plurality of bolts, and a connecting direction of the flange portion to be connected to the saddle member with an equal interval between the bolts. 3. The water tap with a saddle according to claim 1, wherein the water tap can be selected and set as appropriate.