Drainage device and automatic drainage system equipped with said drainage device

Abstract

To provide water removal equipment enabling reduction of effort of water level adjustment performed by a manager of a water storage area.SOLUTION: Water removal equipment W1 is provided which is installed in a catch basin of a water storage area and adjusts a water level of the water storage area, the water removal equipment W1 comprises: a gate mechanism G which can reciprocate vertically and is installed at a position in which the gate mechanism G blocks the front of a drainage hole of the catch basin; and an elevating mechanism 50 which moves the gate mechanism G in a vertical direction. The gate mechanism G is configured in such a manner that a plurality of long plates G1, G2, G3 are arranged in parallel and in the vertical direction, adjacent long plates are connected to each other by a connecting member C, and the uppermost long plate G1 is held by the elevating mechanism. The gate mechanism G is brought into a state in which adjacent long plates are in contact with each other or a gap section is formed, depending on the position of the long plate G1, or in a state in which the bottom end of the lowest long plate G3 is in contact with the top of the lower plate 1b, which is roughly aligned with the bottom end of the drainage hole in the catch basin, or a gap section is formed, and as a result, the vertical position of the water flow path into the drainage hole of the catch basin is displaced.SELECTED DRAWING: Figure 2

Claims

1. A drainage device installed in a drainage basin in a water storage area including a rice paddy, which controls drainage from the drainage basin to adjust the water level in the water storage area, The drainage basin comprises a bottom surface, a pair of side walls rising upward from both the left and right sides of the bottom surface, and a rear wall rising upward from the rear end of the bottom surface. A drainage hole is formed at the lower end of the rear wall, and grooves are formed in the pair of side walls for inserting and attaching a plate. The drainage device is A support unit comprising a pair of legs inserted into grooves in the pair of side walls of the drainage manhole, A gate mechanism is installed in a position opposite to the drainage hole of the drainage manhole and blocking the front of the drainage hole, and is capable of reciprocating vertically along the legs, A lifting mechanism moves the gate mechanism vertically and holds the gate mechanism in any position in the vertical direction, It has a communication control device that controls the operation of the lifting mechanism, A long, plate-shaped lower plate is installed across the lower ends of the pair of legs, and the vertical position of the upper surface of the lower plate is approximately the same as the vertical position of the lower end of the drain hole of the drain manhole. The aforementioned communication control device receives control commands transmitted from an external server device and controls the operation of the lifting mechanism in accordance with the control commands. The gate mechanism has multiple long plates arranged in parallel and vertically, the lowest long plate is positioned so as to be resting on the upper surface of the lower plate portion, adjacent long plates are connected to each other by flexible connecting members, the long plate positioned first from the top is held by the lifting mechanism, and both ends of the multiple long plates are slidably supported by a pair of legs. The drainage device is characterized in that the gate mechanism is configured such that, depending on the position of the uppermost long plate held by the lifting mechanism, adjacent long plates may come into contact with each other or a gap may be formed between them, or the lower end of the lowest long plate may come into contact with the upper surface of the lower plate or a gap may be formed between it and the lower plate, thereby displacing the vertical position of the water flow path that can flow into the drain hole of the drain manhole.

2. The aforementioned gate mechanism is When the uppermost long plate held by the lifting mechanism is positioned at a preset lowest position, all adjacent long plates come into contact with each other, and the lower end of the lowest long plate comes into contact with the upper surface of the lower plate portion. As a result, only the water that exceeds the upper end of the long plate positioned first from the top flows into the drain hole and is drained. Each time the uppermost long plate is raised by a predetermined distance from the lowest position, the multiple long plates, starting from the top, separate from themselves and the adjacent long plate positioned below them, forming gaps that become flow channels for water into the drain hole. The drainage device according to claim 1, characterized in that when the uppermost long plate is positioned at a preset uppermost position, all adjacent long plates are separated to form gaps, and a gap is formed between the lower end of the lowermost long plate and the upper surface of the lower plate portion which substantially coincides with the vertical position of the lower end of the drain hole, forming a flow path for water flowing into the drain hole.

3. The aforementioned gate mechanism is The drainage device according to claim 2, characterized in that when the long plate positioned first from the top, which is held by the lifting mechanism, is lowered by a predetermined distance from the highest position, the lower end of the long plate positioned at the bottom comes into contact with the upper surface of the lower plate portion, closing the gap formed between it and the lower plate portion, and each time the long plate positioned first from the top is lowered by a predetermined distance, the multiple long plates come into contact with the upper end of the long plate positioned above and adjacent to it, in order from the bottom, closing the gap.

4. The support portion comprises a pair of legs and a connecting portion that connects the upper ends of the pair of legs and supports the housing. The housing contains the communication control device and also holds the lifting mechanism. The leg portion has a connecting piece protruding from its upper end, which connects to the connecting portion, and an elongated hole extending in the width direction is formed in this connecting piece. The drainage device according to any one of claims 1 to 3, characterized in that the connecting portion is provided with a fastening portion that is inserted into and fastened in the elongated hole of the connecting piece, and the lateral dimensions of the pair of legs can be adjusted to make the distance between the pair of legs in the lateral direction variable.

5. A drainage device installed in a drainage basin in a water storage area including a rice paddy, which controls drainage from the drainage basin to adjust the water level in the water storage area, The drainage basin comprises a bottom surface, a pair of side walls rising upward from both the left and right sides of the bottom surface, and a rear wall rising upward from the rear end of the bottom surface. A drainage hole is formed at the lower end of the rear wall, and grooves are formed in the pair of side walls for inserting and attaching a plate. The drainage device is A support unit comprising a pair of legs inserted into grooves in the pair of side walls of the drainage manhole, A gate mechanism is installed in a position opposite to the drainage hole of the drainage manhole and blocking the front of the drainage hole, and is capable of reciprocating vertically along the legs, A lifting mechanism moves the gate mechanism vertically and holds the gate mechanism in any position in the vertical direction, It has a communication control device that controls the operation of the lifting mechanism, A long, plate-shaped lower plate is installed across the lower ends of the pair of legs, and the vertical position of the upper surface of the lower plate is approximately the same as the vertical position of the lower end of the drain hole of the drain manhole. The aforementioned communication control device receives control commands transmitted from an external server device and controls the operation of the lifting mechanism in accordance with the control commands. The gate mechanism has three long plates arranged in parallel and vertically, the lowest long plate is positioned so as to be resting on the upper surface of the lower plate section, adjacent long plates are connected to each other by connecting members, the long plate positioned from the top is held by the lifting mechanism, and both ends of the three long plates are slidably supported by a pair of legs. When the uppermost long plate held by the lifting mechanism is positioned in the first position, all adjacent long plates are in contact with each other, and the lower end of the lowermost long plate is in contact with the upper surface of the lower plate portion. When the lifting mechanism moves the uppermost long plate to a second position, raised by a predetermined distance from the first position, a gap is formed only between the uppermost long plate and the intermediate long plate, and the lower end of the lowermost long plate comes into contact with the upper surface of the lower plate. When the uppermost long plate is moved by the lifting mechanism to a third position, raised by a predetermined distance from the second position, gaps are formed between all adjacent long plates, and the lower end of the lowest long plate comes into contact with the upper surface of the lower plate. A drainage device characterized in that when the uppermost long plate is raised by a predetermined distance from the third position to the fourth position by the lifting mechanism, gaps are formed between all adjacent long plates, and the lower end of the lowermost long plate is separated from the upper surface of the lower plate portion, thus forming a gap.

6. An automatic drainage system comprising: a drainage device installed in a drainage basin in a water storage area including a paddy field, which controls the drainage from the drainage basin to adjust the water level in the water storage area; a relay connected to a network and capable of communicating with the drainage device; and a server device that transmits control commands to the drainage device via the relay to instruct the operation of the drainage device, causing the drainage device to control the drainage from the drainage basin; The drainage basin comprises a bottom surface, a pair of side walls rising upward from both the left and right sides of the bottom surface, and a rear wall rising upward from the rear end of the bottom surface. A drainage hole is formed at the lower end of the rear wall, and grooves are formed in the pair of side walls for inserting and attaching a plate. The drainage device is A support unit comprising a pair of legs inserted into grooves in the pair of side walls of the drainage manhole, A gate mechanism is installed in a position opposite to the drainage hole of the drainage manhole and blocking the front of the drainage hole, and is capable of reciprocating vertically along the legs, A lifting mechanism moves the gate mechanism vertically and holds the gate mechanism in any position in the vertical direction, It has a communication control device that controls the operation of the lifting mechanism, A long, plate-shaped lower plate is installed across the lower ends of the pair of legs, and the vertical position of the upper surface of the lower plate is approximately the same as the vertical position of the lower end of the drain hole of the drain manhole. The communication control device receives control commands transmitted from the server device and controls the operation of the lifting mechanism in accordance with the control commands. The gate mechanism has multiple long plates arranged in parallel and vertically, the lowest long plate is positioned so as to be resting on the upper surface of the lower plate portion, adjacent long plates are connected to each other by flexible connecting members, the long plate positioned first from the top is held by the lifting mechanism, and both ends of the multiple long plates are slidably supported by a pair of legs. The gate mechanism is characterized in that, depending on the position of the long plate positioned from the top and held by the lifting mechanism, adjacent long plates may come into contact with each other or a gap may be formed between them, or the lower end of the long plate positioned at the bottom may come into contact with the upper surface of the bottom plate or a gap may be formed between it and the bottom plate, thereby displacing the vertical position of the water flow path that can flow into the drain hole of the drain manhole.

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