JP2000032858A - Water stop machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water stop machine capable of automatically stopping an intake into a paddy field and convenient to intake water from an agricultural water path to the paddy field, etc. SOLUTION: This water stop machine is used for stopping water in a paddy field by automatically lowering a valve when a water level attains a prescribed level according to a monitored result of a water level detector. Breadth controlling boards 18 are fitted to right and left side positions of an upper board 14a and a lower board 15a of a body frame. Each of the breadth respectively controlling the boards 18 can pulling out a board outward by only loosening a screw 145 within a range a long hole 181 is formed, then the breadth of the body frame.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water stoppage machine for taking water from a agricultural irrigation canal to a paddy field or the like.

[0002]

2. Description of the Related Art In order to draw water from an agricultural canal into a paddy field or the like, the board that had previously blocked the intake port of the paddy field was removed and water intake into the paddy field was started. In general, if the water is sufficiently stored, the water intake is generally closed with a board. Such a method is inconvenient because not only the plate may come off from the water intake and water may enter the paddy field too much, but also the plate may be lost.

[0003] Therefore, a paddy water stoppage device shown in FIGS. 7A and 7B may be used. The paddy water stop device 1b includes a main body frame 11b having a gate port 151 for drawing water from a water channel into a paddy field, and a valve body 25 for opening and closing the gate port 151.
a. A valve stem 26a extends upward from the valve body 25a, and a handle 2 is provided at an upper end of the valve stem 26a.
7a is configured. Also, since the pins 29 are formed at intervals of about 40 mm in the longitudinal direction of the valve stem 26a, the notches 2 are formed on the upper surface of the main body frame 11b.
After pulling up the valve rod 26a while turning the handle 27a in a predetermined angle direction so as to pass through the valve body 7b, if the handle 27a is turned, the pin 29 is hooked on the upper surface of the main body frame 11b. . In this state, since the gate port 151 is open, water can be drawn from the gate port 151 into the paddy field. Further, the valve stem 26a is pulled up with the handle 27a, and the pin 29 is cut out.
When the valve stem 26a is lowered while turning the handle 27a in a predetermined angle direction so as to pass through the valve body 25a, the gate port 151 is moved to the valve body 25a.
Closed and water can be stopped.

[0004]

However, in the paddy water stoppage device 1b shown in FIG. 7, since the opening and closing of the gate port 151 by the valve body 25a is manually performed, the state of water storage after the water intake is started. The inconvenience of going to see it cannot be eliminated. If the house and the paddy field are nearby, it will not be difficult to see how much water is stored, but if you go to a distant paddy field and see how much water is stored, you need to start again if there is not enough water There is. Also, if you forget to take water, water may overflow from the paddy field.

Here, the inventor of the present application proposes a water stoppage machine that can automatically perform water intake and water stoppage from an agricultural waterway to a paddy field or the like. In addition, the inventor of the present application proposes that it is possible to automatically perform water intake and water stoppage, and also to improve the inconvenient portion of the paddy water stoppage device 1b shown in FIG. 7 and the like. .

[0006] In view of the above problems, an object of the present invention is to provide:
An object of the present invention is to provide a water stoppage device that can automatically stop water intake to a paddy field and the like, and is convenient for use in water intake from an agricultural waterway to a paddy field and the like.

[0007]

According to the present invention, there is provided a body frame having a gate opening for drawing water from an agricultural waterway into a water storage section such as a paddy field, and an opening and closing mechanism for opening and closing the gate opening. A valve body, a valve driving unit that causes the valve body to perform the closing operation of the gate port, a water level detection unit that detects a water level of the water storage unit, and a water level of the water storage unit based on a detection result of the water level detection unit. And control means for controlling the valve driving means so that the valve body closes the gate port when the pressure reaches a predetermined level, wherein the main body frame projects laterally to extend the main body frame. And a width adjusting plate for substantially expanding the width dimension of the light emitting element.

In the present invention, the water level detecting means monitors the water level of the water storage section such as a paddy field, and based on the monitoring result, when the water level of the water storage section reaches a predetermined level, the control means controls the valve drive. The means lowers the valve body, and the valve body automatically closes the gate port. For this reason, after starting water intake, it is not necessary to go to see how the water is stored. In addition, even if the user forgets to take water, the water stops automatically so that water does not overflow from the paddy field. Further, in order to cover an intake port of a paddy field or the like with the main body frame, a size suitable for the intake port is required, but the size of the intake port of a paddy field or the like is not necessarily standardized separately. Therefore, a water stop device that is sized for each paddy field is required. However, in the present invention, the width of the main frame can be adjusted with the width adjustment plate, so that the present invention can be conveniently applied to any size water intake.

In the present invention, it is preferable that the water level detecting means includes a sensor support shaft capable of piercing the water storage portion, and a water level sensor attached to the sensor support shaft. That is, there is usually no place to install a water level sensor in a paddy field or the like even if the water level is detected by the water level detection means. In addition, there is a restriction that a water level sensor must be provided in a place that is hardly directly affected by flowing water in order to detect the water level. Even with such restrictions, the water stoppage device of the present invention installs a water level sensor using a sensor support shaft that can pierce a water storage section such as a paddy field. It is suitable for water intake from agricultural irrigation canals to paddy fields.

[0010] In the present invention, it is preferable that the control means has a notification means for detecting the remaining amount of the battery used for the valve drive means when an external operation is performed, and notifying the detection result. In other words, the battery is used as a power source to use the water stoppage device in a place away from home, such as a paddy field, but since water is collected in the paddy field only for a limited period of one year, It is possible that the water is insufficient and water cannot be stopped normally. However, it is inconvenient for each farmer to prepare a voltmeter for battery check. On the other hand, displaying the remaining battery level at all times is useless in a water stop device that is installed in a paddy field. Therefore, according to the present invention, when an external operation is performed, the remaining battery level is detected and the detection result is notified by the notification means, which is convenient for use in paddy fields and the like.

In the present invention, the control means includes a load monitoring means for monitoring a load state of a motor included in the valve driving means, and the motor is in an overload state based on a monitoring result by the load monitoring means. Sometimes it is preferable to provide a security mechanism for stopping the power supply to the motor. That is, when water is taken from an agricultural waterway to a paddy field or the like, earth and sand and other foreign substances are often caught between the gate port and the valve body. In such a case, the motor is overloaded, but if the motor is continuously used, the motor may be burned. Therefore, in the present invention, a load monitoring means for monitoring the load state of the motor is provided, and when the motor is overloaded, power supply to the motor is stopped. Therefore, even if a water stoppage machine is used for water intake in a paddy field or the like, the motor will not be burned, which is convenient.

In the present invention, it is preferable that a stopper mechanism for defining a lowermost position of the valve body is provided. With this configuration, it is possible to prevent the gate from being opened above the valve due to the valve being lowered too much. In addition, there are many occasions where a water stop is carried as long as it is used in a paddy field or the like. However, in the present invention, since the valve body does not lower from a predetermined position by a stopper mechanism, it is convenient to carry the water stop.

In the present invention, the valve driving means is provided at a final stage of a motor and a driving circuit for driving the motor,
When the motor is stopped, it is preferable to provide a brake circuit that forms a closed loop in the motor to prevent the valve from falling due to its own weight by an electromotive force generated in the motor. With this configuration, it is possible to prevent the valve body from falling by its own weight and closing the gate port. Therefore, it is possible to appropriately perform water intake from the agricultural water channel to paddy fields and the like.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In addition, the water stoppage machine of this example is a water stoppage machine for paddy fields used for taking water from an agricultural waterway to a paddy field.

FIG. 1A is a front view showing the water stoppage device for a paddy field of this embodiment, FIG. 1B is a right side view thereof, and FIG. 1C is a guide for forming a gap through which a valve element passes. FIG. 1D is an explanatory view showing a pillar and a guide, and FIG. 1D is an explanatory view showing a member integrating them. In FIG. 1 (b), the left side is the water channel side and the right side is the paddy field side in the drawing.

As shown in FIG. 1A, the paddy water stoppage machine 1 of this embodiment comprises a waterstop body 10 and a water level detection section 30 for detecting the water level of the paddy field (water storage section). Have been.

(Structure of Water Level Detecting Unit) The water level detecting unit 30 (water level detecting means) includes a sensor support shaft 3 having a sharp lower end.
1 and a water level sensor 32 that is mounted to be vertically movable along the longitudinal direction. Sensor support shaft 3
1 and the water level sensor 32 are mounted via a substantially U-shaped mounting bracket 33. Upper surface part 3 of mounting bracket 33
31 and the lower surface 332 are provided with through holes at positions opposing each other, and these through holes are provided in the sensor support shaft 31.
Of the sensor support shaft 3
1 can be moved up and down along the longitudinal direction. However, a screw hole is provided in the side surface portion 333 of the mounting bracket 23, and when the screw 334 is tightened in the screw hole, the mounting bracket 33 is fixed at a predetermined position of the sensor support shaft 31. A screw hole is provided on the distal end side of the lower surface portion 332 of the mounting bracket 33, and the screw shaft 321 of the water level sensor 32 is passed through the screw hole and tightened by a nut 322 from above, so that the water level sensor 32 is attached to the mounting bracket 33. 33. Here, the result detected by the water level sensor 32 is input to a control unit described later by a code 323 drawn from the water level sensor 32.

(Configuration of Water Stopper Main Body)
As shown in FIGS. 1A and 1B, a main body frame 11, a valve body 25 for closing a gate opening, and a valve configured on the upper end side of the main body frame 11 for driving the valve body 25. Drive unit 20
(Valve driving means).

The main body frame 11 has a flat base 12. On the lower surface of the base 12, there are formed two guide columns 13 extending in parallel downward. The upper plate 14 is fixed to these guide columns 13 by screws 131,
The lower plate 15 is fixed by screws 132. Lower plate 1
A gate port 151 protruding in a substantially cylindrical shape is provided substantially near the center on the lower end side of 5. This gate 151
Is a passage when water is taken from the water channel to the paddy field when the main body frame 11 is arranged so as to close the water intake port of the paddy field. Therefore, by opening and closing the opening of the gate port 151 with the valve body 25, it is possible to take water and stop water from the water channel to the paddy field.

As shown in FIG. 1C, an elongated guide 16 formed in a substantially L-shape is fixed by two screws 163 on its side 162, as shown in FIG. Further, the front portion 161 of the guide 16 and the guide post 13
Are fixed so that a gap is formed between the first and second members. In this example, this gap serves as a guide path for the valve element 25 and the valve element 2
5 moves vertically up and down without tilting and swinging back and forth. Here, as shown in FIG. 1 (d), the guide path for the valve body 25 includes the guide column 13 and the guide 16 as one member, and the guide column 13a and the guide portion 16a for the member. May be.

The valve drive section 20 is formed on an upper surface of a mounting plate 201 fixed to the upper surface of the base 12 of the main body frame 11 with screws, and is entirely covered by a cover 202. The valve stem 26 is supported on the cover 202 so as to penetrate the cover 202 itself, the mounting plate 201, and the base 12 substantially vertically from above to below.
The lower end of the valve stem 26 is attached to the valve
Has been fixed. Here, the valve stem 26 is rotatable around the axis with respect to the valve body 25.

As will be described later, the valve shaft 26 is
0 and is supported by the main body frame 11 in a vertically movable manner. Therefore, the valve driving unit 2
When the valve stem 26 moves up and down by 0, the valve body 25 also moves up and down. In this example, the valve stem 2
An inverted T-shaped handle 27 for manually adjusting the height position of the valve body 25 is attached to an upper end portion of the cover 202 projecting from the upper surface of the cover 202.

Inside the cover 202, two buttons 203 and 204 are provided vertically, of which the button 203 is the remaining power of the battery 205 installed in the cover 202 as a power source of the water stoppage device 1 of this embodiment. Is a button for confirming. That is, when the button 203 is pressed, the voltage between the terminals of the battery 205 is measured. When the voltage is higher than a predetermined voltage, a buzzer emits a sound, and when the voltage is lower than the predetermined voltage, the remaining amount of the battery 205 is insufficient. , The buzzer does not emit sound. Alternatively, the fact that the battery 205 is remaining may be notified by lighting a lamp instead of the buzzer.

On the other hand, the button 204 is used to activate the security mechanism when the paddy water stoppage device 1 has an abnormality (for example, a foreign object is caught in the gate opening and a large load is applied to the valve body 25). This is a reset button for returning to a normal state from the state when the supply of power to the power supply is stopped.

(Structure of Valve Drive Unit) FIG. 2 (a) is an explanatory view showing a state in which the rack and the pinion provided in the valve drive unit are disengaged, and FIG. 2 (b) is a state in which the rack and the pinion are engaged. FIG. 2 (c) is an enlarged view showing the meshing state between the rack and the pinion.

As shown in FIGS. 2A and 2B, a motor 21 is disposed inside a cover 202 in the valve drive section 20. A gear section 22 is provided at the tip end of an output shaft 211 of the motor 21. Is attached. The gear portion 22 is movable along the axial direction of the output shaft 211. Gear part 2
Numeral 2 includes a pinion 221 and a cylindrical sleeve 222 that is drawn vertically from the pinion 221. In this example, although not shown, the gear portion 22 is not shown.
Is urged to the output shaft 211 by a spring, and thus can rotate integrally with the output shaft 22.

On the other hand, as shown in FIG.
A rack 261 is formed on the outer peripheral surface of the valve stem 26,
The pinion 221 and the rack 261 are in an engaged state. Therefore, the rotational motion of the motor 21 is converted into a linear motion by the pinion 221 and the rack 261, and the valve stem 26 can be moved up and down. In this example, for example, the valve body 25 per pitch of the teeth of the pinion 221 and the rack 261 is used.
Can be changed by 3.14 mm at a time. Also,
In this example, since the rack 261 is formed entirely around the valve stem 26, even if the handle 27 is in any direction,
The rack 261 and the pinion 221 are in an engaged state.

Of the two end portions of the gear portion 22, the pinion 22
A knob 23 is attached to the end on the side of No. 1, and by operating the knob 23, the gear portion 22 is connected to the output shaft 211.
Can be moved on. That is, when the knob 23 is pulled outward, as shown in FIG. 2A, the gear portion 22 shifts in the direction shown by the arrow B, and the pinion 221 is disengaged from the position where it meshes with the rack 261. When the knob 23 is released from this state, as shown in FIG. 2B, the gear portion 22 moves in the direction indicated by the arrow A by the biasing force of the spring and returns to the original position, and the position of the pinion 221 is changed to the position of the rack 261. It becomes a position to be engaged. Here, the output shaft 211 has a protrusion 21
2, the notch 223 is formed in the sleeve 222, and when the knob 23 is released, the protrusion 212 and the notch 223 are engaged with each other, so that the gear portion 22 is connected to the pinion 221 by the rack 261. Stop reliably at the position where meshes. The knob 23 is in a state of protruding outside from the cover 202, and the pinion 221 and the rack 261 are
Can be operated externally.

(Structure of Control Unit) The motor 21 operates under the control of a control unit (not shown) provided in the cover 202. The control unit receives the detection result of the water level sensor 32 of the water level detection unit 30 via the code 323, and controls the motor 21 based on the detection result. In this example, when the paddy field reaches a preset water level, the motor 21 is driven to shut off the gate port 151 by the valve element 25. In the paddy water stoppage machine 1 of this example, when the water level of the paddy reaches the set water level, the gate port 151 is shut off by the valve body 25, and then the water level of the paddy falls again below the set water level. The valve 25 may also be driven to open the gate port 151.

The control unit has a built-in voltage measurement circuit (not shown) for detecting the output voltage of the battery 205 as described above. Power is supplied to the buzzer to detect whether or not the amount is insufficient and to notify the user when the voltage of the battery 205 is higher than a predetermined voltage. When the voltage of the battery 205 is lower than a predetermined voltage, power is not supplied to the buzzer.

When water is taken from the agricultural waterway, earth and sand and other foreign substances are often caught between the gate port 151 and the valve element 25. Therefore, the control unit includes a load monitoring circuit that monitors the load state of the motor 21 by detecting a current level flowing through the motor 21, and based on the monitoring result of the load monitoring circuit, sets the motor 21 in an overload state. In some cases, a security circuit (interruption circuit) for stopping power supply to the motor 21 is also configured. Therefore, even if a foreign matter is caught in the gate port 151, the motor 21 is burned, wasteful power is consumed, and the pinion 221 and the rack 261 are not used.
Can be prevented from being damaged. When such an abnormal state is resolved, the operation is restored by pressing the button 204 as described above.

Further, since the valve element 25 may fall under its own weight, the control unit of this embodiment is provided with a circuit brake.

FIG. 3 is a circuit diagram showing a circuit brake included in the control unit of the present embodiment.

As shown in FIG. 3, the circuit brake (brake circuit) 50 is configured at the last stage of the drive circuit for the motor 21. In the circuit brake 50, when the motor 21 is driven, the transistor Q5 is turned off. On the other hand, when the motor 21 is stopped, the transistor Q5 is turned on, and a closed loop is formed in the motor 21. Therefore, when power is not supplied to the motor 21, the valve body 25 falls by its own weight, and when an electromotive force is generated in the motor 21, the circuit brake 50 is operated using the electromotive force, The rotation of the motor 21 is prevented.

(Structure of Stopper Mechanism) In the water stoppage device 1 for a paddy field of the present embodiment, the guide 16 and the valve body 25 are used for the purpose of properly disposing the valve body 25 at a position where the gate opening 151 is shut off. A stopper mechanism is configured.

FIG. 4A is an explanatory view showing a state in which the guide and the valve constituting the stopper mechanism of this embodiment are separated from each other.
(B) is an explanatory view showing a state in which the guide and the valve constituting the stopper mechanism of the present example are locked.

As shown in detail in FIGS. 4A and 4B,
First, the front part 1 of the guide 16 is used as the stopper mechanism.
A screw 164 is attached to a lower end position of the screw 61 so as to penetrate the thickness portion from the outside and protrude into the guide path.
A protruding portion 252 that protrudes outward from the outer peripheral surface is formed at a portion of the valve body 25 that enters the gap that is the guide path. The protrusion 252 has an inclined surface 253 whose thickness increases toward the upper end. Therefore, the valve element 2
5 moves down from the position shown in FIG. 4A to the position shown in FIG. 4B in order to block the opening of the gate opening 151, the head of the screw 164 projecting into the guide path is inclined by the inclined surface 263 of the projecting portion 262. And restricts the valve body 25 from lowering further. For this reason, in the water stoppage machine 1 for a paddy field of this example, the valve body 25 closes the gate port 151 (closed position).
Placed properly.

With this configuration, it is possible to prevent the gate opening 151 from being opened above the valve body 25 due to the valve body 25 being lowered too much. In addition, there are many opportunities to carry the water stoppage device 1 for paddy fields as it is used in a paddy field or the like.
Is not lowered from the predetermined position by the stopper mechanism, so that it is convenient to carry the water stoppage device 1 for paddy fields.

(Usage Method) A method of using the paddy water stopper 1 of the present embodiment thus configured will be described.

First, the sensor support shaft 31 of the water level detection unit 30
Into a paddy field by a predetermined amount. Also, the sensor support shaft 31
The desired water level is set by adjusting the position of the water level sensor 32 above. Here, it is assumed that the position where the sensor support shaft 31 stands in the paddy field is not affected by the flow of water flowing into the paddy field from the gate port 151.

As described above, there is usually no place to install the water level sensor 32 in a paddy field even if the water level is detected by the water level sensor 32. In addition, there is a restriction that the detection of the water level requires a place that is not directly affected by flowing water. Even with such restrictions, in this example, since the water level sensor 32 is installed using the sensor support shaft 31 that can pierce the paddy field, the water level sensor 32 can be arranged at an arbitrary position. Suitable for water intake.

Next, the main body frame 11 of the water machine main body 10 is arranged at an intake opening for communicating between the water channel and the paddy field, and the intake opening is closed by the main body frame 11.

Next, the button 2 provided on the cover 202
Press 03 to check the remaining amount of the battery 205. At this time, a buzzer sounds when the battery 205 has a voltage higher than a predetermined voltage. Conversely, if the battery 205 has a voltage lower than the predetermined voltage, the buzzer does not sound. In such a case, the battery 205 is replaced or charged.

As described above, the battery 205 is used as a power source in order to use the paddy water stoppage device 1 in a place away from home such as a paddy field. However, since water is collected in the paddy field only for a limited period of the year, it is possible that the remaining amount of the battery 205 is insufficient and water cannot be stopped normally. However, it is inconvenient for each farmer to prepare a voltmeter for battery check. On the other hand, it is a waste of electric power to always display the remaining amount of the battery 205 in the paddy water stoppage machine 1. Therefore, in this example, the button 20
Since the buzzer sounds only when the operation to 3 is performed and the remaining amount of the battery 205 is insufficient, it is sufficient for use in a paddy field or the like.

Next, pull the knob 23 forward and pull the gear portion 22
Is shifted on the output shaft 211 so that the pinion 221 and the rack 2
After disengagement of 61, the handle 27 is lifted, and the valve body 25 is adjusted to a predetermined height position to adjust the flow rate into the paddy field. At this time, if it is difficult to pull up the valve body 25, the knob 23 is pulled to disengage the rack 261 from the pinion 221, and then the L-shaped jig 40 is attached to the cover 202 as shown in FIG. Top and handle 2
7 between the lower end of the handle 7 and the lever 27
Should be raised.

Next, when the knob 23 is released, the gear portion 22 moves on the output shaft 211, and the pinion 221 is moved to the rack 261.
Automatically mesh with. In this state, the valve body 25 is held in a state of being pulled up, and the gate port 151 is in an open state. Therefore, water flows from the channel to the paddy field through the gate opening 151. The work up to this point may be performed when water is not flowing into the water channel. In this case, when water flows into the water channel, the water flows from the water channel into the paddy field through the gate 151.

As described above, when the valve element 25 is configured to be driven via the pinion 221 and the rack 261,
Since the valve body 25 does not become free unless the meshing is released, normally, the height position of the valve body 25 cannot be manually set arbitrarily. Therefore, in this example, the rack 261 and the pinion 22 are configured to be movable on the output shaft 211 of the motor 21.
It is possible to easily switch between a state in which the gears 1 mesh with each other and a state in which the gears 1 are disengaged. Therefore, since the valve body 25 can be easily set in the free state, if the height position is manually adjusted and the rack 261 and the pinion 221 are engaged again in this state, the valve body 25 is Since the water can be held at the height position, water can be taken in a state where the flow rate at the time of water taking is adjusted. In particular, when drawing water into a paddy field, it is often desirable to finely adjust the flow rate at the time of water withdrawal so that rice or the like near the water intake is not damaged, and depending on the water temperature, etc., in this example, the pinion 221 and the rack 2
As long as it is within the range of engagement with 61, the height position of the valve body 25 can be adjusted for each tooth pitch, which is convenient for taking water into a paddy field.

Thereafter, when water sufficiently flows into the paddy field from the gate port 151 and reaches a predetermined water level, the water level sensor 32 detects the water level. Based on the detection result, the control unit drives the motor 21 and Rotational driving force is pinion 221
When transmitted to the rack 261 via the, the valve body 25 goes down and closes the gate port 151. As a result, water intake to the paddy field stops.

(Main Effects of the Embodiment) As described above, in the paddy water stoppage machine 1 of this embodiment, when the water level in the paddy field reaches a predetermined level, the valve 25 automatically opens the gate port 151 automatically. Closed and water stopped. For this reason, after starting water intake, it is not necessary to go to see how the water is stored. In addition, even if the user forgets to take water, the water stops automatically so that water does not overflow from the paddy field.

[Improved Example] FIG. 6A is a front view showing an improved example of a main body frame used for a paddy water stoppage machine to which the present invention is applied, and FIG. 6B is a right side view thereof. (C) is an explanatory view showing a state in which a width adjustment plate provided on the plate has been slid. In addition, since the paddy water stoppage device of this example has a portion common to the paddy water stoppage device 1 according to the above-described embodiment, portions having common functions are denoted by the same reference numerals,
Detailed description thereof will be omitted.

The size of the intake of the paddy field is not standardized, and its width is various. For this reason, unless a water stop for paddy fields having a main body frame 11 having a width corresponding to the width of the intake port is selected, the intake port cannot be closed by the main body frame 11. In order to eliminate such inconvenience, the water stoppage machine 1a for paddy fields of the present embodiment employs a main frame 1
1 is configured to be substantially adjustable. That is, the upper plate 14a and the lower plate 1 of the main body frame 11a of the present embodiment.
A width adjusting plate 18 is attached to a position near the left and right sides of 5a. The width adjustment plate 18 has an elongated hole 181
Are formed at upper and lower positions, respectively.
And screw holes 1 formed in upper plate 14a and lower plate 15a.
43, 153 and the screws 14 attached to these holes
5 allows the adjustment member 18 to move between the upper plate 14a and the lower plate 15
a. Even in this state, the width adjusting plate 18 has a concave portion 180 formed on the inner edge so as not to block the gate opening 151.

Therefore, only by loosening each screw 145, the width adjusting plate 18 can be pulled out within the range in which the elongated hole 181 is formed, and the width of the main body frame 11a can be increased.
Conversely, the width of the main body frame 11a can be reduced by pushing the width adjustment plate 18 inward. Therefore, the paddy water stoppage device 1a of this example can be applied to intake ports having various widths by one unit.

[0053]

As described above, in the water stoppage machine of the present invention, the water level detecting means monitors the water level of the water storage section such as a paddy field, and based on the monitoring result, the water level of the water storage section becomes a predetermined level. The control means is characterized in that when the level is reached, the control means causes the valve drive means to lower the valve body, and the gate port is automatically closed by the valve body. Therefore, according to the present invention, it is not necessary to go to see how water is stored after water intake is started.
In addition, even if the user forgets to take water, the water stops automatically so that water does not overflow from the paddy field.
Further, in order to cover an intake port of a paddy field or the like with the main body frame, a size suitable for the intake port is required, but the size of the intake port of a paddy field or the like is not necessarily standardized separately. Therefore, a water stop device that is sized for each paddy field is required. However, in the present invention, the width of the main frame can be adjusted with the width adjustment plate, so that the present invention can be conveniently applied to any size water intake.

[Brief description of the drawings]

FIG. 1A is a front view showing a water stoppage system for a paddy field according to an embodiment of the present invention, FIG. 1B is a right side view thereof, and FIG. (D) is an explanatory view showing a member integrating them.

FIG. 2A is an explanatory view showing a state in which the pinion and the rack provided in the paddy water stoppage device according to the embodiment of the present invention are disengaged, and FIG. 2B is a diagram in which the pinion and the rack are engaged. FIG. 3C is an explanatory diagram showing a state in which the pinion and the rack are engaged with each other in an enlarged manner.

FIG. 3 is a circuit diagram showing a circuit brake included in a control unit of the paddy water stoppage device according to the embodiment of the present invention.

FIG. 4A is an explanatory view showing a state in which a projecting portion of a valve and a guide screw forming a stopper mechanism of a paddy water stopping device according to an embodiment of the present invention are separated from each other, and FIG. FIG. 4 is an explanatory view showing a state in which a protrusion of the guide abuts against a screw of a guide.

FIG. 5 is an explanatory diagram showing an example of a method of lifting a valve body in the water stoppage for paddy field according to the embodiment of the present invention.

6 (a) is a front view showing a body frame of which width can be adjusted in a paddy field water stoppage device according to an improved example of the present invention, FIG. 6 (b) is a right side view thereof, and FIG. It is explanatory drawing which shows a mode that the board was slid.

FIG. 7A is a plan view of a conventional water stoppage device for paddy fields,
(B) is a front view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Water stopping machine for paddy fields 10 Water stopping machine main body 11 Main body frame 151 Gate opening 18 Width adjustment plate 181 Elongated hole 20 Valve drive part 21 Motor (drive source) 211 Output shaft 22 Gear part 221 Pinion 23 Knob 25 Valve body 252 Projecting part 253 Inclined surface 26 Valve stem 261 Rack 50 Circuit brake

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) F16K 31/54 F16K 31/54

Claims (6)

[Claims] 1. A main body frame having a gate port for drawing water from an agricultural waterway into a water storage section such as a paddy field, a valve body for opening and closing the gate port, and a closing operation of the gate port for the valve body. Valve driving means for performing the operation, water level detecting means for detecting a water level of the water storage section, and the valve element having the gate when the water level of the water storage section reaches a predetermined level based on the detection result of the water level detection means. Control means for controlling the valve driving means so as to close the mouth, wherein the main body frame is laterally extended so that the width dimension of the main body frame is substantially expanded. A water shut-off device comprising: 2. The water level detecting device according to claim 1, wherein the water level detecting means includes a sensor support shaft capable of piercing the water storage portion, and a water level sensor attached to the sensor support shaft. Water shut-off machine. 3. The control unit according to claim 1, wherein the control unit includes a notification unit that detects a remaining battery level used in the valve driving unit when an external operation is performed, and notifies a detection result. A water shutoff machine characterized by the following. 4. The method according to claim 1, wherein
The control unit includes a load monitoring unit that monitors a load state of a motor included in the valve driving unit. When the motor is in an overload state based on a monitoring result by the load monitoring unit, power is supplied to the motor. A water shut-off device comprising a security mechanism for stopping a water stop. 5. The method according to claim 1, wherein
A water stoppage machine having a stopper mechanism for defining a lowermost position of the valve body. 6. The method according to claim 1, wherein
The valve driving means is provided at the last stage of a motor and a driving circuit for driving the motor, and when the driving of the motor is stopped, an electromotive force generated in the motor by forming a closed loop in the motor. And a brake circuit for preventing the valve element from falling due to its own weight.