JP2004267101A - Apparatus for feeding water to paddy field - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for feeding water, installed by only burying a feedwater pipe from a conventional irrigation canal to a paddy field, and further burying a part of a float-storing container under the pipe, not requiring a high installation cost, allowing a commercial member to be used for the apparatus, produced easily and supplied inexpensively. <P>SOLUTION: A float 3 connected to the lower part of a midway of a feedwater pipe 1 combined with a bellows pipe 2 by a connector 4 is installed in a float-storing container 5 so that when the water is fed to a set water level, water comes in through a hole bored at the top end or below of the float-storing container 5 thereby the float and the tip of the feedwater pipe 1 connected to the float may be lifted by the buoyancy acting to the float to position the tip at the position higher than the water level of the irrigation canal and to stop the feed of the water. In the weather of drying the paddy field, the water evaporates from the surface of a sponge 6 stuck to the side surface of the float 3 to lower the float 3 and the tip of the feedwater pipe 1 and to automatically start the water-feeding. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention is an important work in the field of agriculture, especially in rice cultivation in paddy fields, and also reduces the labor required for long-term water management until harvesting, reduces the weighted labor of farmers, and thus, the production of rice cultivation. It was designed to reduce costs, and it was possible to automatically and reliably stop or restart water supply by combining buoyancy of water, gravity of pipes and floats, and evaporation of water. In addition, there is no failure, and the device itself can be manufactured at low cost by using a combination of commercially available simple materials.
[0002]
[Prior art]
Conventionally, various methods have been considered for supplying water to paddy fields and stopping them.However, due to the nature of agricultural water, muddy water is mixed and garbage is flowing, making it difficult to automate. In addition, even if the device is manufactured, there is no merit to introduce a product with many failures or an expensive product. It is only to be seen that some paddy infrastructure development projects have been established with government assistance. Moreover, in order to introduce the device into a general paddy field, it is necessary to convert the irrigation canal into a pipeline, which requires extensive renovation.In a normal paddy field, opening and closing is performed using old-fashioned boards and soil. is the current situation.
(References: Patent application Hei 10-348756, Patent application Hei 9-257427)
[0003]
[Problems to be solved by the invention]
In the conventional technology, the most important issue is how to reliably stop the water flowing in the garbage or the muddy water at the set water level. Although the idea of raising the tip of the water supply pipe has been considered, the water level of the paddy field is usually about 10 cm, and if a float is directly installed on the ground surface, it will only lift 10 cm, and Not suitable for.
In addition, the construction of irrigation canals requires the consent of a large number of people and a large amount of construction costs.
[0004]
[Means for Solving the Problems]
In order to raise the tip of the water supply pipe higher than the water surface of the irrigation channel, which is a problem of the prior art, the float is stored in a float storage container partially buried underground, and the water surface of the paddy field reaches the set water level Then, water enters the storage container so that the float can be lifted high.
Also, the installation work itself requires only burying the water supply pipe from the conventional irrigation channel to the paddy field and burying a part of the float storage container under the ground under the water supply pipe, so that a large amount of construction cost is not required.
The apparatus itself can use commercially available members, can be easily manufactured, and can be supplied at low cost.
[0005]
BEST MODE FOR CARRYING OUT THE INVENTION
In the present invention, a pipe 1 connected to a bellows pipe 2 is fixed in parallel with the ground. Next, the float storage container 5 is buried with its upper end adjusted to the maximum water level of the water supply setting,
The float is put into the float storage container, and the pipe and the float are connected by the connecting tool 4.
The bellows pipe 2 may be a commercially available PVC pipe for sewerage.
The floats 3 and 5 may have a square shape.
The float 3 may be made of hollow PVC or Styrofoam.
The sponge 6 on the side surface of the float may be omitted. In this case, when the water supply is restarted, if the water supply pipe 1 is manually pushed down with the float, water flows out from the gap between the float and the float storage container to start water supply.
[0006]
【The invention's effect】
Since the present invention is a combination of parts using commercially available materials as described in the means for solving the problems, the manufacturing cost is very low, and it is not a precision machine, so even in a paddy field in a wild environment, Even with muddy water or garbage mixed water, there is no worry about failure. In the past, it took many hours from the start of water supply to the end of water supply in a large paddy field, and it was necessary to go around the situation many times. Then, once the water supply is started, there is no need to look around, and the working time can be greatly reduced, and there is no need for large-scale construction such as pipelining.
[0007]
[Brief description of the drawings]
FIG. 1 is a cross-sectional view perpendicular to the ground where water is supplied when a product of the present invention is installed in a paddy field.
FIG. 2 is a cross-sectional view perpendicular to the ground, showing a state where the product of the present invention is installed in a paddy field and water supply is stopped.
[0008]
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Water supply pipe 2 Bellows pipe 3 Float main body 4 Float and water supply pipe connection tool 5 Float storage container 6 Sponge stuck on the side of float 7 Plug

Claims (3)

A paddy water supply system that automatically stops water supply by lifting the tip of the water supply pipe above the water surface of the irrigation canal by the buoyancy of the float in a float storage container partially buried underground. When the sponge is attached to the side of the float and the float is up, that is, when the water supply is stopped, the water in the float container is sucked up by the capillary phenomenon and evaporated from the sponge surface, and the water supply pipe and the float Is a paddy field water supply device that descends with its own weight and starts water supply again. Water supply continues until the water level rises to the set height by opening several holes vertically above the underground part of the float storage container and closing the hole below the water level you want to set with a stopper, When the water level rises to the open hole, water enters the float storage container from the hole and stops supplying water, so that the set water level of the paddy can be easily adjusted by the position where it is closed with a rubber stopper. Water supply device.

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