JPH09248076A - Water level managing device for paddy field - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water level managing device for paddy field with which the clogging of a drain hole caused by glass or mud is reduced, water can be easily drained at the time of off season and maintenance management is facilitated by providing a gate board, disk and driving means, etc., for adjusting the rotating angle of this disk in respective specified structure. SOLUTION: This device is composed of a plate-shaped gate board 111 which has a hole at the central section and partitions the side of paddy field and the side of drain channel, disk 112 which has a drain hole at an eccentric position and can be rotated while being bonded with the gate board 111, driving means for adjusting the rotating angle of this disk 112, and controller for controlling the driving means. In this case, it is preferable for this water level managing device to house the controller inside a control box and to provide sealed structure separating the mechanism part of water level adjustment and the control box.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paddy field water level management device for labor saving and automation of deep water management work as a measure against cold damage in rice cultivation work.

[0002]

2. Description of the Related Art In rice cultivation, it is important to take measures against cold damage, and especially from the 25th to 10th of heading, measures against cold damage are important.
As a countermeasure for this, deep water management is used to flood the paddy fields and protect the rice by this water temperature. The deep water management work of farmers requires a great deal of labor because it involves patrols such as the water level and water temperature surveys in the morning and evening paddy fields. (Actual Kaihei No. 6-46448 publication)

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a water level control device which has a simple structure and reduces the labor of farmers.

[0004]

In order to solve the above problems, a water level control device is provided in a drainage part of a paddy field, and the height of the drainage port is changed to adjust the water level of the paddy field to a desired height. You can For this reason, in the drainage part of a paddy field, the disk which provided the drainage port in the position away from the rotation center of the disk adjusts the water level by changing the rotation angle of this disk.

[0005]

1 is an explanatory view showing a cross-sectional structure of a paddy field in which a water level control device for a paddy field according to the present invention is arranged.

The paddy field 1 has a paddy field 10 divided by a bank 5, and a rice paddy 12 is planted in the paddy field 1. A water supply channel 30 is provided outside the bank 5, and supplies water 20 to the rice field 10 through a water supply port 32. A water level management device, generally designated by 100, is installed on the shore 5 that is arranged on the opposite side of the shore 5 that faces the water supply passage 30 with the paddy field 10 in between. This water level management device 100
Is for controlling the water level 22 of the water 20 in the rice field 10, and the surplus water discharged from the water level management device 100 flows out to the drainage channel 40. A water level management device 100 is arranged between the drainage channel 40 and the rice field 10.

FIG. 2 is a perspective view of the water level management device, and FIG. 3 is an enlarged perspective view of the essential parts of the water level management device. Here, the water level management device 100 uses U on both sides of the gate plate 111.
It is fixed by inserting it into the groove 101 provided inside the V-shaped groove 102 from above.

The water level management device 100 will be described in more detail. The gate plate 111 of the water level management device 100 is a disc 112
A hole having a smaller diameter than the outer shape is provided, and three rollers 113 are provided on the front surface. The disk 112 is rotatably held by a roller 113. A groove is provided on the circumference of the disk 112, and a wire rope 115 is wound around the groove. The wire rope 115 is fixed to the disk 112 by a set screw 116 provided on the disk 112.

A more detailed description will be given. The disk 112 has a drain port 114 whose center is located at a position away from the center of the disk.
And has a rotation angle of at least 180 °. In the rotation operation within that rotation range,
The height of the drainage port is set by the length and position of the wire rope 115 where the chain 117 does not wind around the disc 112. With such a configuration, the water level can be easily adjusted by rotating the disk 112 by the driving means. Further, even if the rotation driving means fails, the disk 112 does not rotate due to water pressure, and the water level is maintained.

A control box, in which a DC gear motor (not shown) is housed, is installed above the gate plate 111 as a drive means for the disk 112. The output shaft of the DC gear motor is geared with the chain 117 outside the control box 120. The disc is rotated by the rotation of the gear motor. With such a water level adjusting device, when the water level adjusting device is not needed, the water level adjusting device main body can be pulled out from the U-shaped groove and stored in another place, such as a barn of a farmer. Therefore, it is effective in reducing the life and preventing theft due to the generation of rust or the like.

One end of the water level display column 118 is attached to the chain 11.
7 and is directly connected to the rotating operation of the disk 112. For this reason, the water level display column 118 largely moves up and down with a certain magnification with respect to the change in the height of the drain port 114, so that the water level display is easier to see than a distance.

In the control box 120, in addition to the driving DC gear motor 180 (not shown), a magnetic switch 230 for detecting the water level, a receiver 300, and a relay 1 are provided.
A 70, 12V battery 175 and a control unit 160 are stored. Here, the water level display column 118 has a hole for detecting the height with the magnetic switch 230, and the magnetic switch 230 has a hole for seeing this hole.
It is installed on the side of.

FIG. 4 shows a system configuration diagram of the water level management apparatus for a paddy field according to the present invention. This system is a water level control device 1
00 control unit 600 and this control unit 600
And a remote control unit 500 that is remotely controlled by an operator such as an agricultural worker. Remote control unit 5
00 is a key switch 510, a transmitter 520, a power source 53
It has 0, and inputs the user's personal ID number, paddy number, water level, and the like.

The input data is sent to the antenna 5 of the transmitter 520.
22 and is received by the antenna 310 of the receiver 300 of the control unit 600 of the water level control device. The control unit 600 has a battery 17
5, having a receiver 300 and a relay 170, the relay 170
Is connected to the programmable controller of the control unit 160, the DC gear motor 180, the limit switch 230, and the like.

According to the data received by the receiver 300,
The control unit 160 uses the limit switch 230 and the DC gear motor 180 to rotate the disc 112 so as to reach the height position set by the user. In response to the rotation angle of the disc, the height of the drain port 114 provided on the disc rises and falls.

[0016]

According to the present invention, since the drainage port is provided at a position eccentric from the center of the disc and the disc is rotated, the water level adjusting device is configured so that the drainage height can be controlled. It is possible to reduce the clogging of the drainage port due to dirt or mud.

According to the present invention, the main body of the water level control device is inserted into the groove from above, and can be easily removed during the season when deep water control is unnecessary, so that maintenance and management becomes easy.

[Brief description of drawings]

FIG. 1 is a sectional view illustrating an outline of a water level management device for a paddy field according to the present invention.

FIG. 2 is a perspective view showing an installed state of a water level management device for a paddy field according to the present invention.

FIG. 3 is a perspective view showing a main part of a water level management device for a paddy field according to the present invention.

FIG. 4 is a control block diagram of a water level management device for paddy fields according to the present invention.

[Explanation of symbols]

10 ... Rice field, 12 ... Rice field, 114 ... Drainage port, 30 ... Water supply channel,
40 ... Drainage channel, 100 ... Water level management device, 114 ... Drainage port, 120 ... Control box, 118 ... Water level display column, 1
12 ... Disc, 111 ... Gate plate, 113 ... Roller, 11
7 ... Chain, 115 ... Wire rope, 300 ... Receiver,
500 ... Remote control unit

Claims (4)

[Claims] 1. A water level control device disposed in a drainage channel of a paddy field, having a plate-shaped gate plate having a hole in the central portion and partitioning the paddy field side and the drainage channel side, and a drainage port at an eccentric position. A water level management device for a paddy field, which comprises a rotatable disc joined to the gate plate, a drive means for adjusting the rotation angle of the disc, and a control device for controlling the drive means. . 2. The paddy field water level control device according to claim 1, wherein the control device is housed in a control box, and the water level adjusting mechanism and the control box have a separate structure and a sealed structure. 3. The apparatus according to claim 1, further comprising means for mechanically displaying the height position of the outlet, and a column for displaying the mark is provided with a mark for detecting the height by a sensor for control. Paddy water level management device. 4. The disk is held by three or more V-shaped rollers or V-shaped slide guides arranged on a plate-shaped gate plate that partitions the paddy field side and the drainage channel side. The water level management device for a paddy field according to claim 1.