JPS5917954Y2 - Water level adjustment device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a water level adjusting device for agricultural use, mainly in paddy fields, and its purpose is to make it possible to adjust the water level in paddy fields extremely easily.

Traditionally, the water level in rice fields has been adjusted by cutting ridges or partitioning them with wooden boards to adjust the height of drainage holes. Farmers have to check shallow water every morning and evening to manage the water in their rice fields. I went to check to see if it was there.

The present invention aims to provide a water level adjustment device that can reliably prevent such shallow water from occurring, save the trouble of checking the presence or absence of shallow water, and that can extremely easily adjust the water level in rice fields. An example will be explained based on drawings.

In the figure, 1 is on the floor, 2 is the soil on the floor 1, and 3 is the soil on the floor 2.
The upper water, 4 is the ridge, 5 is the water level for adjusting the height of the water 3 on the cultivated soil 2 by guiding water to the drainage ditch 6 located on the opposite side of the cultivated soil 2 with the border of the ridge 4 It is a regulating device.

This water level adjustment device 5 includes an elbow 7, a drain pipe 8 whose one end is fitted and connected to the lower end of the elbow 7, and a substantially cylindrical cylinder whose lower end is fitted and connected to the upper end of the elbow 7. 9, a substantially cylindrical piston 10 that fits into the cylinder 9 from above and can be raised, lowered, and stopped; and the piston 10.
and a handle rod 11 attached to the upper end of the handle, and all of these members are made of synthetic resin or the like.

Note that the inner and outer diameters of the piston 10 and the inner and outer diameters of the cylinder 9 are equal, and in order to fit the piston 10 into the cylinder 9, the piston 10 has a split groove 12 formed at its rear side. The piston 10 is compressed so that its diameter becomes slightly smaller using the split groove 12, and can be press-fitted into the cylinder 9 with an appropriate force.

Further, at the upper end of the piston 10, the heights of the front side part and the rear side part are different, and the height of the front side part is lower than the height of the rear side part, and is formed at the middle part of the height of the single groove part 12 on the rear side. The height of the drain hole 13 is higher than that of the drain hole 13.

The upper end of the cylinder 9 has a flat side surface shape, that is, is formed so that the height gradually increases from the front upper end to the rear upper end, and when the piston 10 is fitted into the cylinder 9 to the lower end, the piston The front upper end of the cylinder 91 is higher than the front upper end of the cylinder 9 (see Figure 3), and the drain hole 13 of the piston 10 is located at the front upper end of the cylinder 91 and is openable (see Figure 5). ).

Next, a method of using this water level adjusting device 5 will be explained.

The water level adjustment device 5 is provided close to the ridge 4 at the end of the rice field, as shown in FIG.

Specifically, the cylinder 9 is buried so that the rear part faces the ridge 4 side, the front part faces the paddy field side, and the front upper end is slightly buried in the soil 2, and the elbow 7 and the drain pipe 8 are also buried in the ridge 4 side. The other end of the drain pipe 8 is fitted and connected to the other end of another drain pipe 14 whose one end opens into the drain groove 6.

The piston 10 is fitted into the cylinder 9 from above, and by keeping the front side facing the paddy field (cultivated soil 2) side, the front upper end of the piston 10 protrudes above the cultivated soil 2, and the cultivated soil 2. It is possible to prevent the water 3 above from leaking.

Further, as shown in FIG. 4, by pulling up the piston 10 and positioning its front upper end above the position shown in FIG. 3, the water level above the soil 2 can be maintained at a high level.

If the water 3 on the soil 2 increases due to rainfall, etc., the water 3 is guided into the piston 10 from the front upper end of the piston 10 in the order of elbow 7 → drain pipes 8, 14 → drain groove 6. can be drained.

If you want to further lower the water level on the soil 2, for example, by pushing the piston 10 down to an appropriate height from the state shown in FIG. It can drain more water.

By the way, if you want to drain water from soil 2, please refer to Figures 4 and 5.
As shown in the figure, by rotating the piston 10 by 180 degrees and pushing it all the way to the lower end of the cylinder 9, the drain hole 1 is opened.
3 faces the soil 2 side, and the water 3 on the soil 2 is guided into the piston 10 through this drainage hole 13, and the elbow 7 → drain pipes 8, 14
→It is possible to completely drain water to the drain groove 6.

In the above embodiments, the drain pipe 8 is connected to another drain pipe 14, but if the ridge 4 is narrow, the drain pipe 8 can be opened into the drain groove 6, and in this case, it is not necessary to provide the drain pipe 14.

The water level adjusting device of the present invention can be implemented as described above, and the water level in the paddy field can be adjusted extremely easily by raising and lowering the piston fitted into the cylinder.
In addition, there is no need to worry about shallow water, unlike the conventional method of cutting ridges or partitioning with wooden boards.

[Brief explanation of the drawing]

The drawings show an example of the implementation of the present invention; FIG. 1 is a perspective view, FIG. 2 is a rear view of the piston, FIGS. 3 to 5 are vertical side views showing different usage conditions, and FIG. 6 is a side view of the piston. is a longitudinal sectional front view of FIG. 5.

Claims (1)

[Scope of utility model registration request] A roughly cylindrical cylinder whose lower end communicates with the drain pipe and whose side profile gradually increases in height from the front upper end to the rear upper end is equipped with a roughly cylindrical piston from above that can stop moving up and down and stop rotating. The piston is press-fitted, and at the upper end of the piston, the height of the front side part is lower than the height of the rear side part and higher than the height of the drainage hole formed in the middle part of the rear side part in the height direction. A water level adjustment device characterized by: