JPH0746856Y2 - S-shaped pipe for water supply - Google Patents

Description

[Detailed Description of the Invention] (Industrial field of application) The present invention relates to the adjustment of the burial depth, the detour of obstacles, or the displacement of the ground in a water pipe that is branched from a water pipe installed by a water company. The present invention relates to a water pipe S-shaped pipe used for absorption and the like.

(Prior Art) Conventionally, the S-shaped pipe is formed of a lead pipe, a steel pipe, a vinyl chloride pipe, etc., and the upper horizontal portion and the lower horizontal portion of these S-shaped pipes are both parallel to the horizontal direction. Has been formed.

(Problems to be Solved by the Invention) However, such a conventional S-shaped tube has the following problems.

A conventional S-shaped tube formed of a lead tube expands when water freezes in the winter, and even if it thaws, it does not restore and repeats plastic deformation and may eventually burst. In addition, lead may be dissolved in tap water to impair the health of drinkers.

The conventional S-shaped pipe formed of a steel pipe requires a lot of man-hours for connecting the elbows having threaded ends to both ends of the steel pipe, and also has a large loss head because water flows at right angles and right angles. In addition, rusting occurs, and it is difficult to align the center of the pipe axis and the distance.

A conventional S-shaped tube formed of vinyl chloride expands when water freezes in winter, and it does not recover even if it thaws, and it repeatedly undergoes plastic deformation and may eventually burst. Further, it is difficult to align the center and the distance of the tube axis.

Since all conventional S-shaped pipes are formed such that the upper horizontal part and the lower horizontal part are parallel to the horizontal direction, when using this to connect the water faucet with saddle and the water supply pipe,
Accidents frequently occur in which the water supply pipe sinks due to the soil tightening after backfilling, and the water supply pipe side of the S-shaped pipe bends downward and the S-shaped pipe comes off from the saddle with saddle.

The present invention has been devised to solve the above-mentioned conventional problems, and its purpose is to have excellent chlorine water resistance, weather resistance, impact resistance, durability, and flexibility, and An object of the present invention is to provide an S-shaped pipe for water supply which has good pipe workability such as pipe axis alignment and distance alignment, and which does not come off from a water faucet with a saddle even if the water supply pipe sinks due to ground subsidence.

(Means for Solving the Problems) As means for achieving the above-mentioned object, in the water supply S-shaped pipe of the present invention, it is an S-shaped pipe used as a water supply pipe, and the pipe body has a chlorine-resistant water resistance. It is formed by a two-layer pipe consisting of an inner layer made of soft polyethylene resin and an outer layer made of soft polyethylene resin mixed with carbon black for weather resistance, and the upper horizontal part is formed parallel to the horizontal direction. At the same time, the lower horizontal portion is formed so as to be inclined downward from the horizontal direction.

(Operation) Since the water pipe S-shaped pipe of the present invention is configured as described above,
When this is used to connect, for example, a saddle-equipped faucet and a water supply pipe, first, the upper horizontal part of the S-shaped pipe is connected to the saddle-equipped faucet. In this case, the upper horizontal portion is connected by inclining upward from the horizontal direction in anticipation of bending due to ground subsidence after the soil is backfilled. Next, the lower horizontal part of the S-shaped pipe will be connected to the water supply pipe, but since the lower horizontal part is formed by inclining downward from the horizontal direction, the upper horizontal part should be inclined upward. This makes it parallel to the horizontal direction and facilitates connection with the water supply pipe. After the connection of the water supply pipe is completed, the excavated soil will be backfilled, but since the soil will be tightened after the backfilling and ground subsidence will occur, the water supply pipe will also subside. Since an S-shaped pipe is connected to the water supply pipe, the S-shaped water supply pipe side will bend downward as the water supply pipe sinks, but in anticipation of that, connect the upper horizontal part by inclining the upper horizontal part. Therefore, the base end side of the upper horizontal portion is bent to be in a parallel state, and the connection state between the upper horizontal portion and the water faucet with a saddle becomes an ideal state, and the S-shaped pipe does not come off from the water faucet. . In addition, since the pipe body of the present invention is made of a two-layer pipe made of soft polyethylene, it has excellent chlorine water resistance, weather resistance, impact resistance, durability, flexibility, and the tube axis alignment and distance. It is also excellent in piping workability such as fitting.

Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings. In the following description, the case where the water faucet with a saddle and the water supply pipe are connected by an S-shaped pipe will be described as an example.

FIG. 1 is a front view showing an S-shaped pipe A for water supply of this embodiment, and FIG.
FIG. 3 is a sectional view thereof, and FIG. 3 is an explanatory view showing its usage state.

In the figure, reference numeral 1 is an S-shaped tube body, and an upper horizontal side 3 and a lower horizontal portion 4 are formed above and below the bent portion 2. The tube body 1 is an inner layer made of a soft polyethylene resin having chlorine resistance.
It is formed of a two-layer tube consisting of 10 and an outer layer 11 made of a soft polyethylene resin mixed with carbon black to have weather resistance. The upper horizontal part 3 is formed so as to be parallel to the horizontal direction, but the lower horizontal part 4 is inclined downwardly from the horizontal direction by about 5 to 10 degrees as shown in FIG. It is formed by inclining. The inclination angle θ is determined according to the degree of inclination when the connection port 30 of the upper horizontal part 3 is connected to the rotatable branch pipe 50 attached to the water faucet 5 with a saddle. Since the horizontal portion 3 is connected so as to be inclined upward by about 5 to 10 degrees, the inclination angle θ of the lower horizontal portion 4 is also set to about 5 to 10 degrees correspondingly. In the figure, 6 is a water supply pipe, 7 is a joint, and 8 is a water distribution pipe.

Therefore, when connecting the water faucet 5 with a saddle and the water supply pipe 6 using the S-shaped pipe A of the present embodiment, first, the pipe body 1
Port 30 of the upper horizontal part 3 and branch pipe 50 of the dip 5 with saddle
As shown in FIG. 3, the upper horizontal portion 3 is connected by inclining the upper horizontal portion 3 upward by about 5 to 10 degrees. next,
The lower horizontal part 4 and the water supply pipe 6 will be connected, but since the lower horizontal part 4 is formed with a downward inclination of about 5 to 10 degrees in anticipation of the inclination of the upper horizontal part 3, The lower horizontal portion 4 is substantially horizontal, and the connection with the water supply pipe 6 is easy.
Then, after the water pipe is completed, the excavated soil will be backfilled, but the backfilled soil will be tightened over time and the ground will subside, and the water supply pipe 6 will also subside. Since the S-shaped pipe A is connected to the water supply pipe 6, the S-shaped pipe A also sinks, but in the present embodiment, the upper horizontal part 4 is tilted upward by about 5 to 10 degrees and connected in anticipation of the sinking in advance. Therefore, as shown by the phantom line in FIG. 3, the upper horizontal part 3 is brought into a horizontal state by this sinking, whereby the pipe axes of the upper horizontal part 3 and the lower horizontal part 4 become horizontal, which is ideal. It will be in a connected state.

In the S-shaped pipe A of this embodiment, since the pipe body 1 is formed of a two-layer pipe made of polyethylene, it is resistant to chlorine water.
It has excellent weather resistance, impact resistance, durability, flexibility, and also has excellent pipe workability such as pipe axis alignment and distance alignment.

Although the embodiment of the present invention has been described above with reference to the drawings, the specific configuration is not limited to this embodiment, and a design change within the scope of the invention is included in the present invention.

For example, in the embodiment, the case where the S-shaped pipe of the present invention is used for connecting the water faucet with a saddle and the water supply pipe has been described as an example, but the place of use, purpose, etc. are not limited to this.

(Effect of the Invention) As described above, in the water pipe S-shaped pipe of the present invention, the pipe main body has the weather resistance by mixing the inner layer made of the polyethylene resin having chlorine resistance and carbon black. Since it is formed of a double-layered pipe consisting of a polyethylene resin outer layer, it is resistant to chlorine water, weather resistance, impact resistance, durability,
There is an effect that it is possible to provide an S-shaped pipe which is excellent in flexibility and is also excellent in pipe workability such as pipe axis alignment and distance alignment.

Further, in the present invention, the lower horizontal portion is formed so as to be inclined downward from the horizontal direction. Therefore, if the upper horizontal portion is connected inclining upward from the horizontal direction in advance in anticipation of subsidence due to ground descent, The effect that the upper horizontal part is bent by the ground subsidence and the pipe axes of the upper horizontal part 3 and the lower horizontal part 4 become horizontal and an ideal connection state is achieved, whereby the S-shaped pipe can be reliably prevented from coming off. There is also.

[Brief description of drawings]

FIG. 1 is a front view showing an S-shaped pipe for water supply of an embodiment of the present invention,
FIG. 2 is a sectional view thereof, and FIG. 3 is an explanatory view showing its usage state. A: S-shaped tube 1: Pipe body 3: Upper horizontal part 4: Lower horizontal part 10: Inner layer 11: Outer layer

Claims (1)

[Scope of utility model registration request] 1. An S-shaped pipe for use in water pipes, wherein the pipe main body is an inner layer made of a soft polyethylene resin having chlorine resistance and a soft polyethylene resin having carbon black mixed therein to have weather resistance. A water supply characterized by being formed of a two-layer pipe consisting of an outer layer made of water, the upper horizontal part being formed parallel to the horizontal direction and the lower horizontal part being inclined downward from the horizontal direction. S-shaped tube for.