JPH0333826Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a drain pipe that is used to connect a large number of drain pipes to form a drainage channel.

(Prior Art) Generally, a drainage channel is formed by sequentially connecting a large number of drainage pipes, but in a conventional drainage pipe, a socket part 3 is formed at one end of a cylindrical pipe main part 2, as shown in FIG. The distal end 2a of the main body part 2 of another drain pipe 1 can be fitted into the socket part 3, and in order to facilitate the connection of the drain pipes 1 to each other,
As shown in FIG. 4, the inner diameter M' of the socket part 3 is formed to be slightly larger than the outer diameter N' of the tube main body part 2.

(Problem to be solved by the invention) As mentioned above, in the conventional drain pipe, the inner diameter M' of the socket part 3 is formed to be slightly larger than the outer diameter N' of the pipe main body part 2. 1. When connecting the parts, it is impossible to ensure alignment, especially if there is a step at the bottom of the connecting part as shown in Figure 5. Dust 8 will accumulate in this part, making it difficult for the drainage to flow smoothly. The problem is that there is no.

(Means for Solving the Problems) Therefore, as a means for solving the above-mentioned problems, the present invention provides a socket that is coaxial with the pipe main body and that is attached to the inner surface of the socket formed at one end of the pipe main body. The drain pipe is constructed by forming a centering protrusion that is substantially inscribed in a virtual circle having the same diameter as the outer diameter of the drain pipe.

(Function) According to the present invention, by using the above-mentioned means, a drainage channel constructed by connecting drainage pipes can be automatically aligned;
This allows for smooth drainage without dirt and debris accumulating in the drain pipe.

(Example) An underdrain drain pipe as an example of the present invention will be described in detail below with reference to the drawings.

The underdrain drainage pipe according to the embodiment of the present invention shown in Figs. 1 to 3 is formed by firing clay at high temperature, and a socket part 3 for a joint is formed at one end of the pipe main part 2 in the shape of a straight cylindrical pipe. Furthermore, a large number of water guide grooves 4, 4, . . . are formed on the outer surface of the tube main body 2 in parallel to the length direction over the entire length and around the entire circumference.

The inner surface of the socket part 3 for the joint is formed by expanding slightly outward, and the inner diameter M of the tip is slightly larger than the outer diameter _N1 of the tube main part 2. On the inner surface of the part 3, three protrusions 7, 7, 7, which are coaxial with the tube main part 2 and substantially inscribed in an imaginary circle having the same diameter as the outer diameter _N1 , are arranged at an angular interval of 120° from each other. It is formed to protrude from the inner surface of.

An example of the dimensions of each part of the illustrated drain pipe 1 is as follows. Note that the unit is mm.

Length of the drain pipe L 600 Thickness of the drain pipe T 13 Outer diameter of the main body of the pipe N ₁ 126 Inner diameter of the socket tip M 140 Width of the water guide groove W ₁ 3 Depth of the water guide groove P 2 Spacing between the water guide grooves Q 6 Height of the protrusion H 5 Width of the protrusion W ₂ 18 Distance between the center of the protrusion and the tip of the large diameter part D 4.5 To explain how to use this culvert drainage pipe and its functions, this culvert drainage pipe is designed as shown in Figure 1. Then, a large number of drainage pipes 1 are connected in a slightly inclined state so that the socket part 3 side is on the upstream side and located above the main pipe part 2, and are buried in the ground 5.

At this time, the two drain pipes 1, 1 are connected by fitting the tip 2a of the pipe main body 2 of another drain pipe 1 into the inner surface of the socket part 3, as shown in FIGS. 2 and 3. However, the three protrusions 7 protruding from the inner surface of the socket part 3 are located at positions almost inscribed in an imaginary circle having the same diameter and coaxiality as the outer diameter of the tube main body part 2, and each protrusion 7 is at an equal angle (120゜) Since they are arranged at intervals, if the tip 2a of the main body part 2 of another drain pipe 1 is inserted into the inner surface of the socket part 3, the centering of the two adjacent drain pipes 1, 1 can be reliably and automatically aligned. It is something that can be done.

Note that the outside of each drain pipe 1 is filled with a coating material 6 for improving water retention. When groundwater adheres to the outer surface of each drain pipe 1, the groundwater is guided by the water guide groove 4, flows along the outer surface of the pipe main body 2, and flows toward the tip 2a of the drain pipe connecting portion.
is drained inside.

Note that a part of the groundwater adhering to the outer surface of the pipe main body part 2 permeates into the pipe main part 2 by capillary action, and the other part is guided downstream along the water guide groove 4. The groundwater flows downstream through the drainage pipe guided into the socket part 3.

Note that synthetic resin drainage pipes can also be used, but synthetic resin underdrain drainage pipes tend to have organic matter deposited inside them, and groundwater adhering to the outer surface may leak into the main body of the pipe due to capillary action. It is preferable to use a clay pipe because it will not penetrate into the inside of the container.

In the embodiment described above, an underdrain drainage pipe which is buried underground and has a water guide groove 4 in the pipe main body part 2 has been described, but the present invention is not limited to the embodiment described above. Of course, any drainage pipe (for example, one installed on the ground) that has a projection 7 formed thereon will suffice.

(Effect of the invention) Since the invention is constructed as described above,
When forming a drainage channel by sequentially connecting the drain pipes 1,
By inserting the tip 2a of the pipe main body part 2 into the inner surface of the socket part 3 of another drain pipe 1, alignment can be performed reliably and automatically, and drainage can be carried out smoothly without dirt accumulating in the connecting part. etc., it has excellent practical effects.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of the usage state of a drain pipe according to an embodiment of the present invention, Fig. 2 is a partially enlarged view of the connecting portion of the drain pipes in Fig. 1, and Fig. 3 is a view taken from arrow A in Fig. 2. FIG. 4 is an enlarged view of a connecting portion of a conventional drain pipe, and FIG. 5 is an explanatory diagram of the state in which the conventional drain pipe is used. 1...Drain pipe, 2...Pipe main part, 3...Socket part, 7...Protrusion.

Claims (1)

[Scope of utility model registration request] A socket part 3 having an inner diameter larger than the outer diameter of the pipe main body part 2 is formed at one end of the pipe main part 2, and a socket part 3 that is coaxial with the pipe main part 2 and has an inner diameter larger than the outer diameter of the pipe main part 2 is formed on the inner surface of the socket part 3. A drain pipe characterized in that a projection 7 for centering is formed substantially inscribed in a virtual circle having the same diameter as the outer diameter of the portion 2.