JPH0516885U - Clay drainage unglazed earth pipe - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] To eliminate the drawbacks of the conventional clay clay pipe for underdrain drainage, simplify related work and rationalize construction efficiency, and add value so that it has economic benefits. The purpose is to provide a higher product. [Structure] An inner-tilt type connection fitting portion 2A is formed at a tip end portion of the biscuit clay tube body 2, and an inner-tilt type connection fitting portion 2B is formed at a rear end portion thereof. Further, the coupling fitted portion can be formed at the tip of the branch pipe in the joint pipe.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This proposal relates to an unburned clay pipe for underdrain drainage for civil engineering, which eliminates the conventional drawbacks, simplifies the work and rationalizes the construction efficiency, and further enhances the added value to have an economic benefit. Is.

[0002]

[Prior Art]

 Conventionally, this kind of thing is as follows. With reference to FIGS. 1 and 2, the connection end face 7A of the conventional unglazed drainage biscuit clay pipe 7 is left uncut and has no joint portion. The construction is buried in the soil by a mere butt construction method. Therefore, the phenomenon that the inside of the tube is clogged due to the displacement from the connecting end surface and the mixing of sediment (the same symptom as cerebral thrombosis in the human body) has occurred. In order to solve these phenomena, we have defended by covering the body of the clay tube with a covering material (straw, shavings, bamboo grass, etc.) in a sandwich shape. However, the material used for this coating material becomes scarce and difficult to obtain year by year, and when the coating material causes a very slight decay phenomenon due to the influence of bacteria in the soil, the adhesion between the end faces of the unglazed earth pipe connections is reduced. Adhesive effect that promotes the conversion to water is generated, and the water permeability is significantly reduced. Regarding the absorption or inflow of water by the water supply (mizumizu) in the underdrain, it is absorbed by the capillarity phenomenon from the surface of the unglazed earth pipe, but this is 18% or less, and 82% or more is inside the pipe due to the joint between pipes. Flows into and becomes one flow.

[0003]

[Problems to be solved by the device]

 The conventional techniques described above have the following problems. Therefore, if the above-mentioned phenomenon (adhesion effect that promotes adhesion between the end faces of the unglazed clay pipes is generated and water permeability is significantly reduced) occurs, there is no function of the underdrain drainage that should be present, and furthermore, the coating material The use was inefficient and uneconomical for the burial construction because it resulted in soaring material costs, installation labor, and labor costs.

The present application has been made in view of the above problems of the conventional technique, and an object of the present application is to provide the following. The biscuit clay pipe main body is configured so that the outer side surface and the inner side surface of both the connection end surfaces of the biscuit clay body are tapered with the coupling fitting portion 2A and the coupling fitted portion 2B which are integrated with the firing clay tube body.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention is as follows. That is, in the present invention, for the underdrain drainage in which the inner inclined type connecting fitting portion 2A is formed at the tip portion of the biscuit clay tube body 2 and the inner inclined type connecting fitted portion 2B is formed at the rear end portion. It is a unglazed clay pipe. Further, the coupling fitted portion can be formed at the tip of the branch pipe in the joint pipe.

[0006]

【Example】

 Examples will be described with reference to the drawings. Reference numeral 1 is a biscuit clay pipe for drainage of the underdrain. Reference numeral 2 is a body of unglazed clay, 2A is an internally inclined connection fitting portion formed at the tip portion, 2B is an internally inclined connection fitted portion formed at the rear end portion, and 2C is a pipe thickness. That is, when the connection fitting portion 2B of the underdrain drainage unglazed clay pipe 1 located at the rear is fitted to the connection fitted portion 2B of the underdrain drainage unglazed earth pipe 1, the two are connected in the front-rear direction. Will be. In this way, by connecting a suitable number of culvert drainage clay clay pipes 1, a culvert can be formed at a desired location for burial.

The connecting fitting portion 2A has a stepped portion 2A1 formed from the outer peripheral surface side of the biscuit clay tube body toward the inner peripheral surface side at a rear position of a predetermined dimension from the tip of the biscuit clay tube body 2, It is composed of a tapered portion 2A2 that is continuously provided from the inner edge of the step portion toward the tip end. The connected fitting portion 2B has a stepped portion 2B1 formed from the inner peripheral surface side to the outer peripheral surface side direction of the biscuit clay tube body at a front position of a predetermined dimension from the rear end of the biscuit clay tube body 2, and The tapered portion 2B2 is in a thickened state and is continuously provided from the outer edge toward the rear end. In this case, when the coupling fitting portion 2A is fitted to the coupling fitting portion 2B, a minute gap 2D is formed so that so-called water supply (mizumichi) is formed, while, for example, the coupling fitting portion 2B. On the other hand, the outer diameter dimension of the coupling fitting portion 2A is smaller than the inner diameter dimension of.

With reference to FIGS. 3 and 8, the dimensions are as follows, taking an example of an unburned clay pipe for drainage from an underdrain with an internal diameter of 6 cm (2 dimensions.60 mm). B for 300 mm, B for 12 mm, C for 11 mm, D for 60 mm, E for 4 mm, F for 1 mm, G for 5 mm, J for 4 mm, L for 1 mm, N for 5 mm, LE for 1 mm. In addition, referring to FIG. 8, in the drawing, the inner portion 2D1 of the gap 2D seems to be in close contact and there is no water supply, but the connection fitted portion 2B and the connection fitting portion 2A are connected in a protruding state. Since it is provided, sufficient water supply can be secured.

With reference to FIG. 9, the method of forming the coupling fitting portion 2A is as follows. The clay is softened by a small piece cutting tool 3 in which a steel wire 3A such as a piano wire, which is formed at a certain angle from the outer surface, is fixed to half the thickness of the clay body in which the clay is soft. It can be formed by rotationally cutting the edge in the state. With reference to FIG. 10, the method of forming the connected fitted portion 2B is as follows. The clay is softened by a small piece cutting tool 4 in which a steel wire 4A such as a piano wire that is configured at a certain angle is fixed to the rotating body 4B from the inner surface with half the tube thickness of the clay body in which the clay is soft. It can be formed by rotationally cutting the edge in the state. After such a rotation cutting process, the unglazed clay pipe body 2, the connecting fitting portion 2A, and the connected fitted portion 2B are dried and fired to be integrated.

The existing clay conduit pipes for drainage are 4 types of straight pipes having a length of 30 cm and an inner diameter of 6 cm, 9 cm, 12 cm, and 15 cm, and the one of the present application is also configured to have the same dimensions. .. In the case of the joint pipe 5 configured as a T-shaped curved pipe (90 degrees) and the joint pipe 6 configured as a Y-shaped curved pipe (45 degrees) as shown in FIGS. 11 and 12, the branch pipes 5A and 6A are Formed at the tip are the coupled fitting portions 5A1 and 6A1 having the same configuration as the coupling fitting portion 2B described above. With this configuration, the joint pipe and the straight pipe can be easily connected. In this case, connection fitting portions 5B1 and 6B1 similar to the above-described connection fitting portion 2A are formed in front portions of the straight pipe portions 5B and 6B, and connection similar to the above-described connection fitting portion 2B is formed in the rear portion. Fitted portions 5B2 and 6B2 are formed.

The operation will be described together with the effect.

[0012]

[Effect of the device]

 Since the present invention is configured as described above, it has the following effects. 1. The unburned clay pipe for drainage of the underdrainage of the present invention can prevent the displacement of the unburned clay pipe for drainage of the underdrainage during and after the construction, and can be buried in a uniform arrangement. 2. Prevents mixing of soil from the connecting surface. 3. Since no covering material is used, it is possible to simplify burial construction and reduce labor costs and construction management costs. 4. Since no covering material is used, it is possible to prevent the adhesive effect between the pipes after burying. 5. Since the joint has a slope, it is possible to introduce the excluded water into the pipe more accurately than before.

[0013] 6. Since it is composed of the internal inclined type connecting fitting part 2A and the connecting fitted part 2B, the root part becomes thicker and the joint part itself can be strengthened, and the excluded water flowing from the joint between the pipes can be piped. It can also be used as an angle to lead it inside accurately. 7. At present, when the outer sleeve system that is used as a sewer pipe (main firing) for inflating to the outside and joining is configured for the internally inclined connection fitting portion 2A and the connection fitted portion 2B as in the present application, Since the outer surface including the joint is flat, earth pressure is evenly applied to the entire pipe, and the phenomenon of concentrated application to the outer part of the conventional pipe is eliminated. Also, considering the manufacturing process and product transportation, the sleeve part bulged outside occupies the space despite the fact that the capacity of one kiln or one vehicle is large. It increases the cost of transportation. However, according to the present invention, since the internal fitting type connecting fitting portion 2A and the connecting fitted portion 2B are configured, the outer surface including the joint portion becomes flat, and thus such a problem can be solved.

[Brief description of drawings]

FIG. 1 is a side view of a conventional unglazed clay pipe for drainage.

FIG. 2 is a side view illustrating a connection state of the above.

FIG. 3 is a side view of an unburned clay pipe for underdrain drainage according to the present invention.

FIG. 4 is a front view of the above.

FIG. 5 is a vertical cross-sectional view of a biscuit clay pipe for drainage of the underdrain of the present invention.

FIG. 6 is a side view illustrating a connected state.

FIG. 7 is a vertical cross-sectional view of a main part for explaining a connection state.

FIG. 8 is an enlarged view of a main part of the above.

FIG. 9 is an explanatory diagram of a method of forming a connection fitting portion.

FIG. 10 is an explanatory diagram of a method of forming a connected fitted portion.

FIG. 11 is a side view of a joint pipe configured into a T-shaped bent pipe.

FIG. 12 is a side view of a joint pipe formed into a Y-shaped bent pipe.

[Explanation of symbols]

 1 Clay drainage unglazed clay pipe 2 Unburned clay pipe body 2A Connection fitting part 2B Connection fitting part

Claims (2)

[Scope of utility model registration request] 1. An inner inclined type connecting fitting portion (2A) is formed at a tip end portion of a biscuit clay body (2), and an inner inclined type connecting fitted portion (2B) is formed at a rear end portion thereof. An unburned clay pipe for drainage from an underdrain. 2. The unburned clay pipe for drainage from an underdrain according to claim 1, wherein a joint fitting portion is formed at a tip of the branch pipe in the joint pipe.