JP6931913B2 - Paddy field intake management device - Google Patents

Description

The present invention relates to a water intake management device for a paddy field provided with a water dispenser used by being attached to an intake of an agricultural canal.

The applicant of the present application proposes, in Patent Documents 1, 2 and 3, an easy-to-use water supply / stopping machine capable of performing water intake / stopping without relying on human hands as a water supply / stopping machine for water intake management in paddy fields. ing. Such a water supply / stopping machine is configured so that the water supply / stopping machine automatically closes when the paddy field is full. It is convenient because the irrigation status of the paddy field can be visually checked every day, and the work of manually opening and closing the intake and adjusting the opening can be omitted.

Japanese Unexamined Patent Publication No. 2000-32858 Japanese Patent No. 3098197 Japanese Patent No. 2966790

Here, the water stored in the paddy field is warmed and the water temperature rises. Since the water supplied from the agricultural canal to the intake is constantly flowing, the water temperature does not rise much. In particular, during the daytime, the water temperature difference between the water in the paddy field and the water flowing into the paddy field from the intake becomes large. If water with a large difference in water temperature flows into the paddy field during the daytime when the rice grows, it may hinder the growth of the rice. However, in the past, since water intake and water stoppage are controlled based on the water level, irrigation may be performed in a state where the water temperature difference is large.

In addition, since the water dispenser is attached to the intake of the paddy field, it is often difficult to use a commercial power source as driving power. In many cases, a battery power supply is installed as a drive power source for a water supply / stopping machine that automatically controls water intake and water stoppage. In this case, if the water supply / stopping machine is driven frequently in response to fluctuations in the water level, the power consumption will increase, so a battery with a large capacity must be installed, which leads to an increase in the cost of the water supply / stopping machine. ..

Furthermore, in the case of irrigation for paddy fields, water quality is less likely to be a major problem as in the case of drinking water. However, it is inappropriate to use water containing pollutants that are harmful to the human body as irrigation for paddy fields. For example, it is inappropriate to grow rice using radioactively contaminated water. This point has not been paid attention to in water intake management using a conventional water supply / stopping machine.

In view of these points, an object of the present invention is to provide a paddy field intake management device capable of irrigation in a state where the water temperature difference is small with an inexpensive configuration.

Another object of the present invention is to provide a paddy field water intake management device capable of realizing irrigation in a state where power consumption is low and water temperature difference is small with a simple configuration.

Further, an object of the present invention is to provide a paddy field intake management device capable of realizing irrigation in an uncontaminated state with low power consumption and a small difference in water temperature with a simple configuration.

The water intake management device for paddy fields of the present invention
A water dispenser that is attached to the water intake to open and close the water intake of the paddy field.
A water level gauge that measures the water level of paddy fields and
A timer that can be set as a water intake time zone at night, and
It has a water intake control unit that drives and controls the water supply and stop device based on the output of the water level gauge and the output of the timer.
The water intake control unit starts water intake at the start time of the water intake time zone, ends water intake at the end time of the water intake time zone, and ends water intake even before the end time when the water level exceeds a predetermined value. It is characterized by driving and controlling the water supply and stopping machine.

In the water intake management device of the paddy field of the present invention, a predetermined time zone at night (between sunset and sunrise) can be set as the water intake time zone by timer management. During this time period, the water temperature of the paddy field decreases, and the temperature difference from the water taken in from the intake is small. In particular, in the time zone from midnight to before sunrise, there is almost no difference in water temperature, and the growth of rice is not adversely affected. Therefore, according to the present invention, paddy fields can be irrigated with no difference in water temperature.

Here, it is conceivable to attach a thermometer to detect the water temperature difference and control the water intake based on the actual water temperature difference. In this case, it is necessary to install thermometers at two places in order to detect the water temperature of the paddy field and the water temperature of the irrigation canal, which leads to an increase in the cost of the device. On the other hand, according to the present invention, irrigation in a state where the water temperature difference is small can be realized by an inexpensive configuration.

Further, in the present invention, water intake is performed only in the set water intake time zone. Compared with the case where the water supply / stopping machine is automatically opened / closed based on the fluctuation of the water level, the number of times the water supply / stopping machine is driven can be reduced, so that the power consumption can be suppressed.

Since the water intake management device for paddy fields of the present invention requires less power consumption, the water intake control unit can use a battery power source, for example, a 4.5 V battery power source, as a drive power source. The water dispenser has a mounting plate that is attached so that the water intake is closed, a gate lid that is slidably attached to the mounting plate to open and close the water intake gate that is opened in the mounting plate, and a gate lid that slides. It is equipped with a drive motor for driving. As the drive motor, a small DC motor driven by a battery power source, for example, a 12 VDC motor is used. In this case, a booster circuit for boosting the voltage of the battery power supply to 12V may be incorporated.

The paddy field water intake management device of the present invention configured in this way can realize irrigation in a state where power consumption is low and the water temperature difference is small by a simple configuration.

In the water intake management device for paddy fields of the present invention, the water supply / stopping machine is further provided with a mounting width adjusting function . This is convenient because it can be installed even if the width of the water intake to which the water supply / stopping machine is installed is different. In addition, the water dispenser is equipped with a mounting width adjustment plate that can be extended laterally from the left and right vertical edges of the mounting plate, and the amount of protrusion of the mounting width adjusting plate is from the upper end to the lower end of the vertical edge. It can be adjusted to gradually decrease or increase toward the end .

Next, in addition to the above configuration, the water intake management device for the paddy field of the present invention has a radioactivity measuring device for detecting the radioactive contamination state of the water supplied from the irrigation canal to the water intake, and the water intake control unit emits radiation. When the radioactive contamination level exceeds a predetermined value, it is desirable to close the water supply / stop device and prohibit water intake even during the water intake time in order to prevent contamination. Thereby, according to the present invention, irrigation in an uncontaminated state with low power consumption and a small difference in water temperature can be realized by a simple configuration.

It is a front view and the side view which shows the water intake management apparatus of a paddy field to which this invention is applied. It is a schematic block diagram which shows the control system of the intake management apparatus of the paddy field of FIG.

Hereinafter, embodiments of the water intake management device for paddy fields to which the present invention is applied will be described with reference to the drawings.

FIG. 1A is a front view showing the water intake management device of the paddy field according to the present embodiment, and FIG. 1B is a side view thereof. The water intake management device 1 of the paddy field (hereinafter, simply referred to as "water intake management device 1") is a water supply / stopping machine 2 used by being attached to the water intake to open and close the water intake of the paddy field, and the paddy field. It is provided with a water level gauge 3 for measuring the water level and a water intake control panel 4 for controlling the drive of the water supply / stopping device 2. The water intake control panel 4 is attached to a portion on the upper end side of the water supply / stopping machine 2.

The sheet metal water supply / stopping machine 2 includes a mounting plate 11 having a vertically long rectangular contour. The mounting plate 11 is attached to the intake port 10 of the paddy field shown by the imaginary line in FIG. 1 in a state of blocking it. The lower central portion of the mounting plate 11 is hollowed out in a circular shape, and a cylindrical gate port 12 for water intake is fixed. The gate opening 12 projects to the back surface (paddy field side) of the mounting plate 11.

On the front side (irrigation canal side) of the mounting plate 11, a gate lid 13 having a circular contour for opening and closing the gate opening 12 is arranged. The gate lid 13 is guided by vertical guide frames 14 and 15 fixed to the left and right on the front surface of the mounting plate 11 and can slide in the vertical direction. The position shown by the solid line in FIG. 1A is the closed position of the gate lid 13, and the position moved above the gate opening 12 is the opening position where the gate opening 12 is opened. Rust mechanism portions 16 and 17 are attached to the lower end portions of the left and right vertical guide frames 14 and 15 so that the gate lid 13 lowered to the closed position can be pressed against the mounting plate 11. As a result, the gate lid 13 can be guided to the closed position without rattling, and the gate opening 12 can be reliably closed.

The gate lid 13 is fixed to the lower end of the elevating shaft 18. The elevating shaft 18 is attached to the upper edge plate portion 11a of the attachment plate 11 so as to be able to elevate. A water intake control panel 4 is attached to the upper surface of the upper edge plate portion 11a, and the elevating shaft 18 penetrates the case of the water intake control panel 4 and extends upward. The upper end of the elevating shaft 18 is a T-shaped handle 18a. An opening / closing motor 19 is installed in the case of the water intake control panel 4. The elevating shaft 18 is raised and lowered by the opening / closing motor 19, and the gate lid 13 attached to the lower end thereof is also raised and lowered, so that the gate opening 12 is opened and closed. As a transmission mechanism for converting the rotation of the opening / closing motor 19 into the raising / lowering of the raising / lowering shaft 18, for example, a worm gear pair, a rack and pinion mechanism, or the like is used.

Width adjusting plates 21 and 22 that can be projected to the left and right are attached to the back side of the left and right vertical edge portions of the mounting plate 11, respectively. The width adjusting plates 21 and 22 have a tapered shape that projects outward from the lower end to the upper end. Further, the width adjusting plates 21 and 22 are formed with elongated guide holes 21a, 21b, 22a and 22b extending horizontally in the width direction of the mounting plate 11 at the top and bottom. A thumbscrew (not shown) is passed through each of the guide holes 21a to 22b from the back surface side and is screwed and fixed to the mounting plate 11.

When the thumbscrew is loosened, the left and right width adjusting plates 21 and 22 can be slid sideways to adjust the amount of protrusion. As a result, the water supply / stopping device 2 can be reliably attached to the intake ports 10 having different attachment widths.

Next, the water level gauge 3 includes a float switch 31, a support arm 32 on which the float switch 31 is suspended, and a support rod 33 to which the support arm 32 is attached. The support rod 33 can be vertically installed by piercing a predetermined position in the paddy field. The height of the support arm 32 can be adjusted in the vertical direction along the support rod 33. By adjusting the mounting height of the support arm 32, the mounting height of the float switch 31 can be adjusted so that a desired paddy field water level can be detected. The output of the float switch 31 is supplied to the water intake control panel 4 via the lead wire 34.

(Control system)
FIG. 2 is a block diagram showing a control system of the water intake management device 1 having the above configuration. A battery power supply 5, a power supply circuit 6, a timer 7, and a water intake control unit 8 are arranged on the water intake control panel 4 together with a motor drive circuit 20 of the opening / closing motor 19. The battery power supply 5 is, for example, a 4.5v battery power supply, and the power supply circuit 6 includes a booster circuit that boosts the power supply voltage of 4.5V to 12V. The boosted power is supplied to the motor drive circuit 20, the water intake control unit 8, the timer 7, and the like.

The timer 7 is a timer for setting the night time zone as the water intake time zone, and the water intake start time and the water intake end time can be set and changed. In this example, as the water intake time zone, a time zone from midnight to the time before sunrise, for example, 6:00 am can be set. Specifically, it is possible to set and change two types of time, a water intake start time and a water intake end time.

(Example of water intake management operation)
For example, the timer 7 is set to midnight as the water intake start time and 6:00 in the morning as the water intake end time. At midnight, the water intake start time, the water intake control unit 8 drives the opening / closing motor 19 based on the output of the timer 7 to raise the gate lid 13 and open the gate opening 12. As a result, the water intake 10 is opened and water intake to the paddy field is started. At 6:00 am, which is the acquisition end time, the water intake control unit 8 drives the opening / closing motor 19 in the opposite direction based on the output of the timer 7, lowers the gate lid 13, and closes the gate opening 12 again. This completes the water intake to the paddy field.

Water intake to paddy fields is carried out at night when there is little difference in water temperature, especially during the time period between midnight and before sunrise when there is almost no difference in water temperature. Therefore, without detecting the water temperature of the paddy field and the water temperature of the irrigation canal, water can be taken into the paddy field with no difference in water temperature by a simple and inexpensive configuration.

Here, the water intake control unit 8 monitors the water intake state of the paddy field based on the output of the water level gauge 3 during the water intake time zone. When it is detected that the paddy field water level has reached the full water level, the opening / closing motor 19 is driven to lower the gate lid 13 and close the gate opening 12. This makes it possible to prevent excessive water intake. Further, the water intake control unit 8 may monitor the paddy field water level only during the set water intake time zone.

(Another example of water intake management device)
Here, the water intake management device 1 having the above configuration can be provided with a pollution state measuring device for detecting the pollution state of the water supplied from the irrigation canal to the water intake port 10. For example, as a contamination state measuring device, a radioactivity measuring device for detecting a radioactive contamination state can be attached. FIG. 2 shows a case where the radioactivity measuring instrument 9 is attached by an imaginary line.

In this case, the water intake control unit 8 monitors the radioactive contamination level of the water flowing through the irrigation canal based on the output of the radioactivity measuring device 9 during the water intake time zone. If the radioactive contamination level exceeds the specified value, the water intake will be stopped immediately without waiting for the water intake end time. Further, when the radioactive contamination level is equal to or higher than a predetermined value at the water intake start time, the gate lid 13 is left in the closed position so that water is not taken. As a result, it is possible to prevent the contaminated water from being taken into the paddy field.

The pollutant to be measured for the pollution state may be a heavy metal, an organic compound, an inorganic compound, etc., which are harmful to the human body.

1 Water intake management device 2 Water supply and stop device 3 Water level gauge 4 Water intake control panel 5 Battery power supply 6 Power supply circuit 7 Timer 8 Water intake control unit 9 Radioactivity measuring instrument 10 Water intake port 11 Mounting plate 11a Upper edge plate part 12 Gate port 13 Gate lid 14 Vertical guide frame 15 Vertical guide frame 16 Wedge mechanism 17 Wedge mechanism 18 Elevating shaft 18a Handle 19 Opening / closing motor 20 Motor drive circuit 21 Width adjustment plate 21a Guide hole 21b Guide hole 22 Width adjustment plate 22a Guide hole 22b Guide hole 31 Float switch 32 Support arm 33 Support rod 34 Lead wire

Claims (1)

A water dispenser that is attached to the water intake to open and close the water intake of the paddy field.
A water level gauge that measures the water level of paddy fields and
A timer that can be set as a water intake time zone at night, and
A water intake control unit that drives and controls the water supply / stopping machine based on the output of the water level gauge and the output of the timer.
Battery power and
A booster circuit that boosts the voltage of the battery power supply and supplies it to the water dispenser, the water intake control unit, and the timer.
Have and
The water intake control unit
Only during the water intake time, the water level of the paddy field is monitored based on the output of the water level gauge.
When it is detected that water intake starts at the start time of the water intake time zone, water intake ends at the end time of the water intake time zone, and the water level reaches the full water level, it is before the end time. However, the water supply / stopping machine is driven and controlled so that the water intake is completed .
The water dispenser
A mounting plate that is attached so that the water intake is closed,
A gate lid slidably attached to the mounting plate to open and close the water intake gate opened in the mounting plate,
A motor for sliding the gate lid and
A mounting width adjusting plate that can be projected outward from the left and right edges of the mounting plate, respectively.
Is equipped with
The amount of protrusion of the mounting width adjusting plate can be adjusted so as to gradually decrease or gradually increase from the upper end portion to the lower end portion of the edge portion.
The motor is a water intake management device for paddy fields driven by the boosted battery power supply.

Images