JP3091056B2 - Plastic multi-pipe pipe pipe - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-pipe pipe made of plastic, and more particularly to a multi-pipe pipe connected to another multi-pipe pipe. About.

[0002]

2. Description of the Related Art A pipe 1 of a conventional plastic multi-pipe pipe (four pipe pipe) shown in FIG. 11 has two 90 ° elbows 2 connected via a straight pipe 3, sockets 4a and 4b. It is.

[0003]

In the conventional pipe 1, the distance A between the end faces of the elbow 2 can be adjusted by changing the length of the connecting pipe 3, but the distance 2 at which the two sockets 4a and 4b come into contact with each other. Xa is the lower limit of the adjustment range, below which adjustment cannot be made arbitrarily. For this reason, the adjustment range of the center distance L of the elbow 2 and the like is limited, and there is a problem that the workability of the pipeline is poor.

[0004] Therefore, a main object of the present invention is to provide a plastic multi-pipe pipe which can improve the workability of the pipe.

[0005]

SUMMARY OF THE INVENTION The present invention provides a first multi-pipe pipe having a plurality of pipes separated by a partition wall, and a second multi-pipe having the same end face shape as the first multi-pipe pipe. A flat plate having a shape corresponding to the shape of a partition wall between a first multi-line pipe and a second multi-line pipe, which is a pipe of a plastic multi-channel pipe joined to a pipe pipe. Multi-tube made of a plastic pipe, in which a first packing and a second multi-pipe are welded and joined at the outer periphery of the joint, and a reinforcing layer is formed at the outer periphery of the welded joint. It is a duct of a duct.

[0006]

For example, a straight pipe is arranged between two multi-pipe pipes via a flat packing. Then, the respective multi-pipe pipes and the straight pipe are welded and joined at the outer periphery of the joint, and a reinforcing layer is formed on the outer periphery of the weld joint.

[0007]

According to the present invention, the distance between the end faces of the two multi-pipe pipes is uniquely determined by the length of the straight pipe. Therefore, the distance between the end faces can be reduced by changing the length of the straight pipe. It can be adjusted arbitrarily. Therefore, for example, when connecting elbows, the range of adjustment of the center-to-center distance is widened, so that the workability of the pipeline can be improved.

The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A pipe 10 of a two-pipe pipe according to this embodiment shown in FIGS. 1 to 4 is made of a synthetic resin such as vinyl chloride.
One 90 ° elbow 12 is connected via a straight pipe 14 made of the same synthetic resin. Inside the elbow 12, two pipes 18a are formed by a partition wall 16 extending in the pipe axis direction.
And 18b are formed, and inside the straight pipe 14,
The partition wall 20 extending in the pipe axis direction allows two pipes 22
a and 22b are formed. Further, between the elbow 12 and the straight pipe 14, a flat packing 24 (FIG. 4) having a shape corresponding to the end face shape of the partition walls 16 and 20 is interposed. Reinforcing layer 2
6 are formed.

When the conduit 10 is formed, first, as shown in FIG. 5, for example, a packing 24 is bonded to an end face of a partition wall 16 formed on the elbow 12. Then, the straight pipe 14 is positioned with respect to the elbow 12, and the end face of the partition wall 20 formed on the straight pipe 14 is bonded to the packing 24. Subsequently, as shown in FIG. 6, the elbow 12 and the straight pipe 14 are welded and joined at the outer periphery of the joint. At the other end of the straight pipe 14, the packing 24 is similarly inserted between the straight pipe 14 and the elbow 12 by bonding, and the straight pipe 14 and the elbow 12 are welded and joined at the outer periphery of the joint. Thereafter, as shown in FIGS. 1 and 2, a reinforcing layer 26 such as FRP is formed so as to cover the welded joint 28.

According to this embodiment, the distance between the end faces of the elbow 12 can be arbitrarily adjusted by changing the length of the straight pipe 14. If the distance between the end faces is desired to be substantially zero, the elbows 12 may be directly joined together with the packing 24 interposed therebetween as shown in FIG.
Although this embodiment has been described using the two-pipe 90 ° elbow 12, the present invention is not limited to the 45 ° elbow 30 shown in FIG. 8 or the three-pipe pipe 32 shown in FIG. 9 or FIG. 10. Alternatively, the present invention can be applied to a six-pipe pipe 34 or the like. Also in this case, the packing (not shown) inserted by adhesion is formed in a shape corresponding to the end surface shape of the partition wall.

[Brief description of the drawings]

FIG. 1 is an illustrative view showing one embodiment of the present invention;

FIG. 2 is a bottom view of the embodiment of FIG. 1;

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a perspective view showing a state where a straight pipe is connected to an elbow.

FIG. 6 is a perspective view showing a state where an elbow and a straight pipe are welded and joined.

FIG. 7 is an illustrative view showing a state where two elbows are directly joined;

FIG. 8 is an illustrative view showing a state where a 45 ° elbow is joined via a straight pipe;

FIG. 9 is an illustrative view showing an end face of a three-pipe pipe;

FIG. 10 is an illustrative view showing an end face of a six-pipe pipe;

FIG. 11 is an illustrative view showing a conventional technique;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Pipe of a multi-pipe pipe 12 ... 90 degree elbow 14 ... Straight pipe 16, 20 ... Partition wall 24 ... Packing 26 ... Reinforcement layer

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) F16L 47/02 F16L 39/00-39/04

Claims (1)

(57) [Claims] 1. A first multi-pipe pipe having a plurality of pipes separated by a partition wall and a second multi-pipe pipe having the same end surface shape as the first multi-pipe pipe. A pipe of a plastic multi-pipe pipe, wherein a flat packing having a shape corresponding to the shape of the partition wall is bonded between the first multi-pipe pipe and the second multi-pipe pipe. And the first multi-pipe pipe and the second multi-pipe pipe are welded and joined at the outer periphery of the joint, and a reinforcing layer is formed on the outer periphery of the welded joint. Pipe line.