JP2673666B2 - Paddy water level control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water level control device for paddy fields, and eliminates the labor for adjusting the amount of water in paddy fields, which occupies most of the labor for paddy rice cultivation, time constraints, and waste of water. At the same time, the present invention relates to a water level control device capable of always maintaining the water level of a paddy field arbitrarily.

[0002]

2. Description of the Related Art Conventionally, most of the water intake methods for paddy fields have been performed manually, and it has been necessary for people to visit the paddy fields at any time to adjust the weirs, etc. in order to manage the water level in the paddy fields. The water will be wasted and waste water will be wasted to the adjacent paddy field. Depending on the weather, it may be necessary to take water several times a day. It took a lot of time and other farm work could not be done systematically.

In addition, a human eye measurement. Since it is impossible to keep the water level constant because the water level is adjusted by feeling, the paddy water supply control device as shown in FIG. 4 has been used as a means for reducing the labor required for such water level adjustment. Is proposed.

In this example, the paddy water supply control device 1 is divided into an upper layer 3 and a lower layer 4 by a partition wall 2. An opening / closing port 5 is provided in this partition wall, and a float 6 is provided on the main body 1. And an opening / closing valve 7 is provided below the opening / closing port 5. The float 6 and the on-off valve 7 are fixed to the movable shaft 8 so as to interlock with each other. At this time, the float 6
It is fixed to the movable shaft by means of a float suspension metal fitting 9 and a float positioning screw 10. The float hanging metal fitting is fixed to the float 6 by a fixing member 11 such as a nail or a screw.

The shape and size of the float 6 can be arbitrarily determined, and the opening / closing valve 7 can also be formed in an appropriate shape in consideration of the close contact with the opening / closing port 5.
The on-off valve 7 is fixed to the lower end of the movable shaft 8. Further, in this example, the upper layer 3 is provided with a water intake port 12, and the lower layer 4 is provided with a discharge port 13.

The water that has flowed in from the drainage port 12 once enters the upper layer 3, passes through the opening / closing port 5 and enters the lower layer 4, and then the drainage port 13
It flows out from and flows into the paddy field 14. The float 6 is pushed upward by the buoyancy from the water that has flowed into the paddy field 14 and rises. The on-off valve 7 also rises in conjunction with the rise of the float 6.

When the water level 15 of the paddy field 14 reaches a predetermined water level, the opening / closing valve 7 closes the opening / closing port 5 from below to stop the inflow of water into the paddy field 14. When the water level 15 of the paddy field 14 is lowered, the float 6 is lowered according to the change of the water level 15, and in conjunction with this, the open / close valve 7 is also lowered and the open / close port 5 is reopened. Water flows in from and returns the water level 15 of the paddy field 14 to a predetermined water level.

The water level 15 can be easily set by the position where the float 6 is fixed to the movable shaft 8 by the float positioning screw 10. That is, a predetermined water level can be set by adjusting the distance between the lower surface of the float 6 and the upper surface of the on-off valve 7.

In this example, a sediment container 16 is arranged at the discharge port 13 so that it can be taken out. Accumulated earth and sand that deposit grass and prevent it from flowing into the main body 1,
For grass and the like, the earth and sand container 16 may be taken out and discarded.

[0010]

However, although the paddy water supply control device of FIG. 1 is for automatically controlling the water supply to the paddy field, many paddy fields at present have a part of the earth and sand in the uncut gutter. This means that the water intake has been removed, and it cannot be practically installed with the paddy water supply control device shown in FIG. 4, and in order to install it, construction of the water intake is required.

On the other hand, the water flowing through the irrigation canal actually contains earth and sand, dead grass, and seafood, and such foreign matter enters the device and accumulates on the upper layer 3 and the lower layer 4,
Ejection was difficult and had the drawback that it would eventually become inoperable.

The present invention, except for the above-mentioned drawbacks of the conventional apparatus, can keep the water level of the paddy field constant at all times, can be installed in any shape of the irrigation canal, and can easily adjust the water level. It is an object.

[0013]

In order to achieve the above object, a water level control device for a paddy field according to the present invention comprises a device body, an on-off valve, a strainer, a float, an opening limit switch, a closing limit switch and a servo motor. And a storage battery; the apparatus main body has a first chamber and a second chamber, the first chamber has a water intake on a side portion, and has a main body installation surface on an outer surface of the bottom portion; The chamber is adjacent to the first chamber and is adjacent to the first chamber.
A water passage communicating with the first chamber at a position higher than the inner surface of the bottom of the chamber, and an opening / closing port open to the outside having a bottom at a position higher than the outer surface of the bottom of the first chamber;
The opening / closing valve is provided in the second chamber and is vertically movable to open / close the lower opening / closing port; the strainer is provided in the second chamber around the opening / closing port and the opening / closing valve to open / close the opening / closing valve. The float is fixed to the bottom of the second chamber so as to guide the vertical movement of the valve, and the float is provided so as to detect the water level of the paddy field; the opening limit switch is input when the float reaches a predetermined lower water level. The closing limit switch is input when the float reaches a predetermined upper limit water level; the servomotor is electrically connected to the storage battery, and the opening limit switch is opened by the input of the opening limit switch. Raise the on-off valve,
It is characterized in that the opening / closing valve is lowered so as to close the opening / closing port by inputting the closing limit switch.

[0014]

[0015]

In the paddy field water level control device, the intake port is connected to the irrigation canal, and the opening / closing port is oriented toward the paddy field side. The float moves up and down as the water level in the paddy changes, and detects the water level. When the float reaches a predetermined lower limit water level, the limit switch for opening is input, and the servo motor raises the opening / closing valve to open the opening / closing port. As a result, water flows from the intake port to the paddy field via the water passage port. When the float reaches a predetermined upper limit water level, the closing limit switch inputs, and the servo motor lowers the opening / closing valve to close the opening / closing port. This stops the flow of water from the opening / closing port to the paddy field. At this time, since the opening / closing valve operates up and down by the force of the servomotor, even if a lump of soil flows into the opening / closing port, it can be flushed to the outside below. In this way, the supply / stop of the water can be automatically controlled. In the water level control device of the paddy field, a strainer is provided around the opening / closing port and the opening / closing valve to remove sediment, dead grass, seafood, etc. flowing from the irrigation canal so that the opening / closing port does not become blocked. The strainer also serves as a guide for the vertical movement of the opening / closing valve, and can ensure the opening / closing operation of the opening / closing port by the opening / closing valve. Since the opening / closing opening that opens to the paddy side is provided at a position higher than the outer surface of the bottom of the first chamber that is the main body installation surface, objects that have passed through the strainer easily flow away from the opening / closing opening to the outside of the device main body. It is possible to prevent stagnation in the main body of the device and save management labor.

[0016]

Embodiments of the present invention will now be described in more detail with reference to the drawings. 1 is a vertical sectional view, FIG. 2 is a horizontal sectional view, and FIG. 3 is a plan view. Regarding installation, the device body 1 of the present invention, which is a water level control device for paddy fields, can be easily installed under the same conditions as when it was manually operated, and the amount of water intake can be arbitrarily controlled. By upper layer 3
The partition wall 2 is provided with an opening / closing port 5 and an opening / closing valve 6 is installed at the upper portion. A strainer 7 is fixed to the partition wall 2 around the opening / closing valve 6 and also serves as a guide for the opening / closing valve 6 which moves up and down. The opening / closing valve 6 is connected to a servo motor 8 and a movable shaft 9 for opening / closing. ing.

On the other hand, the change in the water level 10 of the paddy field is transmitted to the float 11 floating on the surface of the water level, and is transmitted to the opening disk 13 and the closing disk 14 fixed to the movable shaft 12 connected to the float 11. There is. Further, the positions of the opening disk 13 and the closing disk 14 can be easily adjusted. A closing limit switch 16 is fixed to the upper part of the closing disk 14, and an opening limit switch 15 is fixed to the device body 1 below the opening disk 13. In the water level control device for a paddy field of the present embodiment, the lower layer 4 of the partition wall 2 is directly on the soil surface of the paddy field, and the gap is sufficient if the cross-sectional area required for the irrigation water flows. The water level control device for the paddy field can be easily installed regardless of the shape of the irrigation channel, and can be controlled even when the water level difference between the irrigation channel and the paddy field is small. In addition, the water intake uses the entire width of one side of the main body, and since there is no bottom plate, it has a structure that can be easily installed even with the water intake from the conventional uncut ditch.

As for the operation sequence, the water level 17 of the irrigation canal is higher than the water level 10 of the paddy field, and the on-off valve 6 is closed. When the water level 10 in the paddy field becomes low, the float 11 starts to fall, and the opening disk 13 connected to the float 11 eventually pushes down the opening limit switch 15 to turn on the switch. Thereby, the electric power from the storage battery 18 is supplied, the servomotor 8 is operated, and at the same time, the opening / closing valve 6 connected to the opening / closing movable shaft 9 is pulled up, and the water for use flows into the paddy field from the opening / closing port 5. Eventually, as the water level 10 of the paddy field rises, the float 11 also rises, and when the water level rises to the set water level, the closing disk 14 connected to the float 11 pushes up the closing limit switch 16 to turn on the switch. As a result, electric power from the storage battery 18 is supplied, the servomotor 8 is activated, and at the same time, the on-off valve 6 connected to the opening / closing movable shaft 9 is pushed down, the opening / closing port 5 is closed, and the water flows into the paddy field. Stops. At this time, since the opening / closing valve 6 is operated by the force of the servo motor 8, even if a lump of soil flows into the opening / closing port 5, it can be pushed to the lower layer 4. The above operation is repeated to keep the water level of the paddy field constant.

[0019]

According to the water level control device for a paddy field according to the present invention, the water level in a paddy field can be always and automatically maintained at an arbitrary height. Further, according to the water level control device of the paddy field according to the present invention, the strainer is provided around the opening / closing port and the opening / closing valve, and the earth and sand flowing from the irrigation canal, dead grass,
It is possible to remove seafood, etc. so that the opening / closing opening is not blocked. The strainer also serves as a guide for the vertical movement of the opening / closing valve, and can ensure the opening / closing operation of the opening / closing port by the opening / closing valve. Since the opening / closing opening that opens to the paddy side is provided at a position higher than the outer surface of the bottom of the first chamber that is the main body installation surface, objects that have passed through the strainer easily flow away from the opening / closing opening to the outside of the device main body. It is possible to prevent stagnation in the main body of the device and save management labor. In particular, since the opening / closing valve operates up and down by the force of the servo motor, even if a lump of soil flows into the opening / closing port, it can be pushed out to the outside.

[0020]

The labor required for water management in paddy fields is no longer required as in the conventional case, and labor saving in agriculture and improvement in economic efficiency can be achieved.

Further, the storage battery 18 of resting agricultural machinery such as rice planting machines can be effectively used.

[Brief description of the drawings]

FIG. 1 is a vertical cross-sectional view installed in a water channel of a water level control device for a paddy field.

FIG. 2 is a cross-sectional view of a water level control device in a paddy field, in which a float is arranged so as not to be affected by waves during running water.

FIG. 3 is a plan view showing the position of the equipment of the water level control device in the paddy field.

FIG. 4 is a longitudinal sectional view of a conventionally devised paddy water supply controller.

[Explanation of symbols]

 1 ... Device main body 2 ... Partition wall 3 ... Upper layer 4 ... Lower layer 5 ... Opening / closing port 6 ... Opening / closing valve 7 ... Strainer 8 ... Servo motor 9 ... Opening / closing movable shaft 10 ... Paddy water level 11 ... Float 12 ... Movable shaft 13 ... Opening disk 14 ... Closing disk 15 ... Opening limit switch 16 ... Closing limit switch 17 ... Water channel level 18 ... Storage battery

Claims (1)

(57) [Claims] 1. An apparatus main body, an opening / closing valve, a strainer, a float, an opening limit switch, a closing limit switch, a servomotor, and a storage battery, and the apparatus main body has a first chamber and a second chamber, The first chamber has a water intake on the side and has a main body installation surface on the outer surface of the bottom,
The second chamber has a water passage communicating with the first chamber at a position higher than the inner surface of the bottom of the first chamber adjacent to the first chamber, and has a bottom at a position higher than the outer surface of the bottom of the first chamber. The opening / closing valve that is opened to the outside at the bottom, the opening / closing valve is provided in the second chamber, and the opening / closing port below is provided so as to be opened / closed, and the strainer is provided in the second chamber. It is provided around the opening / closing port and the opening / closing valve, is fixed to the bottom of the second chamber so as to serve as a guide for the vertical movement of the opening / closing valve, and the float is provided so as to detect the water level of the paddy field. The limit switch is input when the float reaches a predetermined lower limit water level, the closing limit switch is input when the float reaches a predetermined upper limit water level, the servo motor is electrically connected to the storage battery,
The opening / closing valve is raised so as to open the opening / closing port by the input of the opening limit switch, and the opening / closing valve is lowered by the input of the closing limit switch so as to close the opening / closing port. Paddy water level control device.