JPH064132U - Paddy drainage system - Google Patents

Abstract

(57) [Summary] [Purpose] A convenient paddy field drainage device that can drain the accumulated water in the depression of the cultivated ground and adjust the inundation to a predetermined depth without digging or digging the ridges. provide. [Structure] Vertical path 1a and horizontal path 1 communicating with the vertical path 1a
The L-shaped drain pipe 1 having the drainage channel 11 consisting of
A plurality of weirs which are buried in the boundary between the paddy field A and the ridge B in a state of being exposed from the ground in the upper half part of a and are stacked in multiple stages on the paddy field side wall of the longitudinal passage 1a and are inserted and removed. The opening portion whose opening area is adjusted by the working member 2 is opened over the entire height, and the lateral passage 1b is connected to a drainage portion such as a water passage.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a drainage device for paddy fields.

[0002]

[Conventional background]

 Paddy fields are irrigated in a flooded condition for a certain period. That is, the surroundings are surrounded by ridges, the cultivated ground is made horizontal, and water is submerged in the cultivated ground to a predetermined depth. For this reason, it is necessary to drain the water that remains in the depressions of the cultivated ground at the stage of paddy field and of course adjust the inundation to the specified depth.

[0003]

[Problems to be solved by the device]

 By the way, in the past, when water was accumulated in depressions on the cultivated ground at the stage of rice paddying, etc., a guideway leading to the ridges was dug to the cultivated ground at the same depth as the depression, and then drained to the ridges. When making a hole by digging or collapsing to drain the accumulated water in the depression to an irrigation canal or the like, and when making the inundation to a predetermined depth, the ridge with the same height level as the depression. The inundation is drained by opening a drainage hole for each minute. However, there was a problem in that workability was poor because it was necessary to drill a drain hole in each ridge using a scoop or other digging tool.

The present invention has been made in view of the above-mentioned conventional circumstances, and the purpose thereof is to drain the accumulated water in the depression of the cultivated ground without drilling or digging the ridge portion. Another object of the present invention is to provide a convenient drainage device for paddy fields that can adjust the water level to a predetermined depth.

[0005]

[Means for Solving the Problems]

 The technical measures taken to achieve the above-mentioned purpose are that an L-shaped drain pipe having a drainage channel consisting of a vertical passage and a horizontal passage communicating with the vertical passage is exposed in the upper half of the vertical passage from the ground. The entire opening is buried in the boundary between the paddy field and the ridge, and the opening area is adjusted on the paddy field side wall of the vertical path by multiple weir members that are stacked and stacked in multiple stages. The gist is that it is opened over the height and the lateral passage is connected to a drainage portion such as an irrigation canal.

[0006]

[Action]

 According to the above technical means, the weir member which can be inserted into and removed from the L-shaped drain pipe buried in the boundary between the paddy field and the ridge with the upper half of the vertical path exposed from the ground is provided. By extracting the desired number from the above, a weir of a desired height can be formed.

[0007]

[Effect of device]

 Since the present invention is the paddy field drainage device configured as described above, it is easy to dig the cultivated ground up to the ridge so as to communicate with the depression and then remove the desired weir member to correspond to the depth. It is possible to drain the water accumulated in the depression without the need to form a hole for drainage guide by using a scoop or other digging tool. Moreover, since weirs of various heights can be freely formed by extracting the weir member in order from the top, the depth of the submerged water can be adjusted appropriately.

[0008]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 4 show a drainage device for paddy field in this embodiment, where reference numeral 1 is an L-shaped drainage pipe, A is a paddy field, B is a ridge, and C is a cultivated ground.

As shown in the figure, the L-shaped drain pipe 1 is formed by connecting a vertical path (vertical path) 1a and a horizontal path (horizontal path) 1b in series to form a drainage path 11, and at the vertical path 1a, a paddy field side wall. That is, the entire wall portion of the vertical passage 1a orthogonal to the extension of the horizontal passage 1b is formed by an open portion whose opening area is adjusted by a plurality of dam members 2 ... There is. Specifically, it is formed by vertically arranging a rectangular tube 1a 'having a substantially rectangular cross-section from one end of a horizontal circular tube 1b', and integrally molded with a ceramic material, a synthetic resin material, a non-rust preventive metal material, or the like. The square wall 1a 'of the L-shaped drain pipe 1 is opened over the entire height of the paddy field side wall, and the opening edge is formed into a dovetail groove in plan view, and the upper and lower end surfaces are mutually contacted with the opening edge. The plurality of weir members 2 ... Are inserted and inserted so that they can be brought into contact with each other.

In this way, the open portion whose opening area is adjusted by the plurality of weir members 2 ... Stacked in multiple stages and inserted / removed in the paddy side road wall of the longitudinal passage 1a is opened over the entire height. As shown in the drawing, the L-shaped drainage pipe 1 is embedded in the boundary between the paddy field A and the ridge B with the upper half of the vertical passage 1a being exposed from the ground, and the lateral passage 1b is connected via a flexible connecting pipe 3. The drainage (not shown) to the irrigation canal. When draining the accumulated water in the depression c formed on the cultivated ground C, it is necessary to dig the inclined guide path c1 extending from the depression c to the ridge B in which the L-shaped drain pipe 1 is buried, and then draining the water. In order to form the weir 12 having any height, the weir member 2 may be appropriately extracted from above (FIG. 1). Thereby, the accumulated water in the depression c is satisfactorily drained. Also, when adjusting the water depth of the flooded water, the weir member 2 may be appropriately extracted from above until the weir 12 having a height corresponding to the water depth is formed (FIG. 2).

The dam member 2 is optional even if its height is lowered toward the upper region of the longitudinal path 1a. In this case, there is a feature that fine adjustment can be performed when adjusting the water depth.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a usage state in which accumulated water in a depression is being drained.

FIG. 2 is a vertical cross-sectional view showing a usage state in which the depth of the submerged water is adjusted.

FIG. 3 is a front view of the L-type drain pipe, showing a state in which a weir member is inserted.

FIG. 4 is a plan view of an L-shaped drain pipe.

[Explanation of symbols]

 A: Paddy field B: Ridge C: Cultivated ground 1a: Vertical path 1: L-shaped drain pipe 1b: Lateral path 2: Weir member 11: Drainage channel 12: Weir

Claims (1)

[Scope of utility model registration request] 1. An L-shaped drainage pipe having a drainage channel composed of a vertical passage and a lateral passage communicating with the vertical passage is buried in a boundary portion between a paddy field and a ridge with the upper half of the vertical passage exposed from the ground. Then
An open portion whose opening area is adjusted by a plurality of weir members that are stacked in a multi-stage manner and that is inserted / removed on the paddy field side wall of the vertical path is opened over the entire height, and the horizontal path is a drainage section such as an irrigation channel. The drainage system for paddy fields, which is characterized by contacting with.