JP6850031B2 - Water supply and drainage pipe for paddy fields - Google Patents

Description

The present invention relates to a water supply / drainage pipe for a paddy field that supplies and drains water to the paddy field.

Conventionally, it has been known to provide a pipe for water supply and drainage in a paddy field in order to control the water level of the paddy field. In this case, water supply and drainage each require separate and independent operations, and valves and pumps for performing each operation, as well as sensors for detecting the water level, etc. are required. (See, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 8-331987

However, according to the conventional technology, since a pump or a valve is required, a water supply / drainage pipe having an extremely simple structure that enables a water supply pipe and a drainage pipe with one pipe is not known. Furthermore, a sensor for detecting the water level is also required, and therefore, providing pipes for water supply and drainage in the conventional technology causes a high cost of themselves and a problem that the construction cost for their installation is significantly increased. was there.

The present invention has been made to solve the above-mentioned problems, and keeps the water level of a paddy field at an appropriate level in one pipe in a very simple configuration without requiring a sensor, a valve, or the like. The purpose is to provide water supply and drainage pipes for paddy fields.

In order to solve the above-mentioned problems, one aspect of the present invention is provided on each of the upper left and right sides of a paddy field water supply / drainage pipe provided along a paddy field in a cross section orthogonal to the length direction of the paddy field water supply / drainage pipe. It is provided with a hole and a hole provided on each of the lower left and right sides in the cross section.

According to the present invention, one pipe in a very simple configuration can supply and drain water to a paddy field, and the cost of itself and the construction cost for installation can be significantly reduced. Other effects of the present invention will also be described in the section of embodiments for carrying out the following inventions.

It is sectional drawing of the water supply / drainage pipe for paddy field in Embodiment 1. FIG. It is sectional drawing of the water supply / drainage pipe for paddy field in Embodiment 2. FIG. It is sectional drawing of the water supply / drainage pipe for paddy field in Embodiment 3. FIG. It is sectional drawing of the water supply / drainage pipe for paddy field in Embodiment 4. FIG.

<Embodiment 1>
Hereinafter, the water supply / drainage pipe for paddy fields according to the present embodiment will be described with reference to the drawings. In the present specification and the drawings, components having substantially the same function are designated by the same reference numerals, so that duplicate description will be omitted.

FIG. 1 is a cross-sectional view of a paddy field water supply / drainage pipe 1. The paddy field water supply / drainage pipe 1 is a pipe buried along the paddy field and the shore provided along the paddy field, and its length direction is along the shore, that is, the direction of the paddy field.

As is clear from the cross section of the paddy field drainage pipe 1 shown in FIG. 1, each of the upper left and right sides of the cross section orthogonal to the length direction of this drainage pipe is used to drain water from the paddy field from the paddy field to the water channel. Exits (upper left and right holes) 11 are provided. Further, supply ports (lower left and right holes) 12 for supplying water from the water channel to the paddy field are provided on each of the lower left and right in the cross section orthogonal to the length direction of the drain pipe.

The distance between the discharge port 11 and the supply port 12 in the height direction is provided to allow the water level of the paddy field and set the water level within this range. That is, when the water level of the paddy field is lower than the supply port 12, water is supplied to the paddy field side from the supply port 12, while when the water level of the paddy field is higher than the discharge port 11, water is supplied to the water channel side from the discharge port 11. Is discharged. The discharge port 11 and the supply port 12 may be formed at a height such that the average water level of the water channel is located between the discharge port 11 and the supply port 12.

According to FIG. 1, as a result of burying the paddy field water supply / drainage pipe 1 on the shore, the upper part thereof is covered with soil 13 and grass 14. Since such a paddy field water supply / drainage pipe 1 is provided along the shore along the paddy field, a large number of supply ports 12 and discharge ports 11 can be provided in the length direction of the paddy field water supply / drainage pipe 1. By laying this around the paddy field along the shore, water can be supplied or drained from all directions to the paddy field, and the efficiency of water level adjustment can be extremely improved.

In addition, it is possible to reuse the water by collecting the water drained from the paddy field and storing it in a small dam or the like appropriately constructed nearby by, for example, a pump (not shown). According to this, since the water in the paddy field can be reused, not only is it a countermeasure against water shortage, but it is also possible to supply water with sufficient conditions such as water temperature and nutrients to the paddy field at any time, and the quality is good. It becomes possible to grow rice.

According to the paddy field water supply / drainage pipe 1 in the above configuration, water can be supplied and drained to the paddy field with one pipe, and the water level can be automatically adjusted without using a sensor or the like. Therefore, in an extremely simple configuration, the water level of the paddy field can be adjusted, the cost can be reduced, and the cost such as the burial construction cost can be significantly reduced.

A plurality of discharge ports 11 and supply ports 12 may be provided in the length direction of the paddy field water supply / drainage pipe 1, and the discharge ports 11 and supply ports 12 may have any shape, for example. It is conceivable to have a circular shape or a rectangular shape. Further, the shape of the discharge port 11 and the supply port 12 may be formed in the shape of a slit formed long in the length direction of the paddy field water supply / drainage pipe 1. Further, the water supply / drainage pipe 1 for paddy fields is made of vinyl chloride, but may be made of other materials.

<Embodiment 2>

In the first embodiment, the cross-sectional shape of the paddy field water supply / drainage pipe 1 has been described as a vertically long elliptical shape, but this shape can be various shapes depending on the purpose.

In the second embodiment, as shown in FIG. 2, the shape of the paddy field water supply / drainage pipe 2 is a square shape. For example, in this case, the artificial mat 15 is provided on the upper outer surface of the paddy field water supply / drainage pipe 2. You can also do it. With such a configuration, it can be installed without spoiling the aesthetic appearance.

<Embodiment 3>
In the third embodiment, as shown in FIG. 3, in the cross-sectional shape of the paddy field water supply / drainage pipe 3, the upper part is the second embodiment and the lower part is the first embodiment.

<Embodiment 4>
As shown in FIG. 4, the fourth embodiment shows a state in which the water supply / drainage pipe 4 for paddy fields is buried in an octagonal cross-sectional shape.

As described above, the cross-sectional shape of the water supply / drainage pipe for paddy fields of the present invention can be any shape depending on the installation location. The above-mentioned water supply and drainage pipes for paddy fields may be arranged on all sides surrounding the paddy fields for water supply and drainage from all sides, and it is desirable to cover these sides with artificial mats or artificial turf. Weeds that grow on the shore spread seeds to the paddy fields and hinder the growth of rice, so weeds on the shore must be manually removed in advance, but weeds can be removed by covering the shore with an artificial mat or artificial turf. It is possible to reduce the complicated work related to. However, weeds should not grow on all banks.

The present invention can be practiced in various other forms without departing from its gist or main features. Therefore, the above embodiments are merely exemplary in all respects and should not be construed in a limited way. The scope of the present invention is shown by the scope of claims, and is not bound by the text of the specification. Moreover, all modifications, various improvements, substitutions and modifications that fall within the equivalent scope of the claims are all within the scope of the present invention.

1, 2, 3, 4 Paddy field water supply and drainage pipe 11 Discharge port (hole)
12 Supply port (hole)
13 Soil 14 Grass 15 Artificial mat

Claims (3)

In paddy for plumbing pipe provided along the paddy, penetrates substantially horizontally disposed at substantially the same position in the Oite vertically on each of the upper left and right in a cross section perpendicular to the length direction of the paddy field for a plumbing line A water supply / drainage pipe for paddy fields, characterized in that the holes are formed as described above and holes are provided on the left and right sides of the lower portion of the cross section. The water supply / drainage pipe for a paddy field according to claim 1, wherein the distance between the upper left and right holes and the holes provided on the lower left and right in the vertical height direction is within the water level adjustment range of the paddy field. The paddy field water supply / drainage pipe according to claim 1 or 2, wherein an artificial mat is provided on the upper outer surface of the paddy field water supply / drainage pipe.

Images