JPS5824012A - Culvert drain pipe - Google Patents

Abstract

PURPOSE:To obtain a culvert drain pipe having excellent flexibility and high pressure resistance by a method in which plural filmy strands are provided in parallel with the longitudinal direction of a pipe, and the outside of the pipe is wound with a hollow bar strand spirally. CONSTITUTION:The outside of plural filmy strands 2 provided at intervals in parallel with the longitudinal direction of a pipe is wound with a hollow bar strand 3 and integrally fuse-bonded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is based on a synthetic resin pipe buried in a pipe made of synthetic resin. and this scale's nR 4J
Water filters are installed in order to drain mountain water and spring water (many holes are installed on the surface of the pipe 1). roughness coefficient, ill
Sexuality [1'l is required when the crystalline state is well-developed and buffed.

[Conventional dark lp made of synthetic resin] In a water pipe, a cylindrical shape is formed with a large number of thread-like wires extending in the longitudinal direction of the pipe, and a thread-like string is wound spirally inside them. It is known that these s1 to hunds were integrated to form a cylindrical body shaped like a mech1.
However, although such a known underdrain 1.11 water bag has good water absorption f1, it has a large roughness coefficient 5, so its water flow characteristics are low, and its strength is insufficient.
J Poor flexibility.

Also known is a structure in which ring-shaped strings 1 to 7 are arranged in a cylindrical shape at regular intervals in the longitudinal direction and connected by several film-shaped strings 7 to form an integrated structure.

However, although such known culvert drainage pipes have improved rough tα coefficient and 'rII deflection ↑11, the ring-shaped sluice lands tend to collapse when subjected to external force, and the F1-
The strength is also not sufficient.

Therefore, an object of the present invention is to provide an underdrain drainage pipe which has a large border t1, has high sweat resistance, and has good water flow characteristics.

According to the present invention, a plurality of films 1 to lands are arranged in a cylindrical shape at intervals in parallel to the longitudinal direction of the pipe, and ε
A hollow rod-shaped land is spirally wound on the outside of the holder.An embodiment of the present invention will be explained with reference to the drawings.

Figures 1 and 2 show the bow 1-1, the culvert IJI water high 11J in which the present invention was implemented, and the direction 1:\F (
``A plurality of film-like strings 7 placed in front of the wand 2 are wound in a shape of ``! 1 and 2 are fixed together, for example by fusion/; rE
1. The empty rod-shaped strand 3 has a configuration δ. - It is appropriate for the Noilm-like land 1 to land 2 to have a width of 3-30 mm and a culm of b, and especially! i 0 mm For m diameter pipes, I prefer 0.3 mm to 1.5 mm j. L
stomach. A hollow stick! ~Run 1-3 is wound spirally, and the angle of inclination α with respect to the direction of the winding axis is 7.
()1α・-87 degrees is preferable 1, especially 50
In a pipe with a diameter of mm II (: 1 hollow rod-shaped steel 1 helland 3, the pip D is about io mm m-20 mm.

The underdrain 11 water pipe according to the present invention is screwed like L
: It is wound in a fl shape (the rod-shaped parts 1 to 33 are hollow, so it is about 1 and a half-), and the resistance is 11 strength and 1σ is J1.
Always Hatake 1. (For example, 50mm 1Tl diameter pipe is 1m.
2009 high quality poly rbu 1 non pipes per 2009
%vj radial strain A, t! The force applied is 30 to 34 kCI per occm of pipe length. On the other hand, in the conventional example (the weight is 10 to 15 kg), the film-like soil 1 to land 2 are arranged inside the underdrain extraction pipe 1, so the inner surface of the pipe is smooth and the phase difference coefficient is Therefore, the flowing water 4] + ability is in the direction 1 to 1.Then, the spirally wound hollow rod-shaped land is arranged at an inclination angle of Yσ7 (1-87 degrees) with respect to the axial direction. Therefore, even if the LJ receives an external force, it will not easily fall over, and since the strand 2 arranged in the longitudinal direction has a monolume shape, it will not easily fall over.
1 deflection f [is also excellent.

As described above, according to the present invention, a plurality of film-like strands 2 are arranged parallel to the longitudinal direction of the pipe, and a hollow rod-like strand 3 is wound spirally on the outside to form a pipe. I made it so that it was better than Shizu II, and 1. : It has very high pressure resistance and can withstand even large amounts of sweat. Furthermore, when comparing pipes with a small roughness coefficient and the same diameter of 1], the comparatively large waste water 1B is reduced by 1!1.

And since the structure has a high honey resistance 1α, the monthly profit cost is 1 ~
In addition, the thickness of the film can be changed freely from one to one roll, so you can use a thin film with relatively little strength and less shadow 19, and use the same amount of material. 1, the strength can be further improved by thickening the hollow rod-like strand.

In addition, in the illustrated embodiment, two hollow rod-shaped strands are wound spirally, but the present invention is not limited to the above. The rod-like strands can also be used in silk matching. The cross-sectional shape of the hollow rod-like strand can be a 1F square, rectangle, circle, oval, triangle, etc., as shown in FIGS. 3(A) to 3(E). .

[Brief explanation of the drawing]

Fig. 1 is a side view showing one embodiment of the present invention, Fig. 2 is a sectional view thereof, and Figs. FIG. 5-2...Film-like land 3...
・Hollow rod-shaped strand 61

Claims (1)

[Claims] A plurality of synthetic resin films (1 to 1 to 2) arranged parallel to each other at intervals in the direction of the first child, and a synthetic resin film q) wound in a spiral shape on the outside of the films. Shoken II Water Bar Eve, which is characterized by a hollow ■・shape 1 and a land.