JP2711322B2 - Sluice gate with water supply - 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 gate provided with a water supply device.

[0002]

2. Description of the Related Art A drainage channel for draining a river, which is often relatively small, is provided with a vertically movable gate for adjusting the flow rate of water.

When the amount of water increases due to a typhoon or torrential rain, the amount of water in rivers and drainage channels temporarily increases.
Further, when the water level of the river overlaps with the rising tide, a phenomenon occurs in which the water level downstream of the drainage channel increases, and the water in the drainage channel cannot be sufficiently drained into the river. For this reason, water overflows from the drainage channel and floods the surrounding area, causing serious damage.

[0004] In order to prevent such damage, a pumping device for forcibly sending water from the upstream side to the downstream side of the gate is provided in the drainage channel. FIG. 3 is a cross-sectional view illustrating an example of a gate provided with a conventional pumping device. As shown in FIG. 3, the conventional pumping device includes a submersible pump 2 provided on the water bottom on the upstream side of a gate 3 provided across the width of a drainage channel 1, and water pumped by the submersible pump 2. And a conduit 4 for sending the water to the downstream side. 13 is an electric motor.

[0005]

The submersible pump 2 used in the pumping apparatus shown in FIG. 3 is entirely submerged in water, and must pump water from the bottom to the height of the upper end of the gate 3. Therefore, there is a problem that the amount of wastewater is small and the efficiency of drainage is poor for the required output. Further, since the submersible pump 2 and the electric motor 13 are immersed in the water, there are problems that the cost required for installation and the operating cost are high, and that maintenance and inspection are not easy.

Accordingly, an object of the present invention is to provide a water gate provided with a water transmission device capable of efficiently transmitting water from an upstream side to a downstream side and solving the above problems including costs. It is in.

[0007]

In order to achieve the above object, a water gate provided with a water supply device according to the present invention has a gate that can be raised and lowered, a water supply device, a check valve, and a drive source of the water supply device. The gate has a through hole in the lower part, the water supply device includes only a cylinder and a screw, the cylinder is provided in the through hole so as to protrude perpendicularly to the gate to the downstream side, and the screw is provided in a plurality. The blades are provided in the cylinder so as to be rotatable coaxially with the cylinder by the drive source of the water supply device, and the respective blades are provided with a gap communicating with each other along the length direction of the cylinder. The check valve is provided at a downstream end of the cylindrical body, and a driving source of the water supply device is mounted at a position higher than the gate and the water surface above the water supply device.

[0008]

[Action] By raising and lowering the gate, it acts as a normal floodgate. When the screw of the water supply device is rotated with the gate lowered, the screw forcibly sends water on the upstream side to the downstream side. On the upstream side of the gate, pieces of wood, mud, dirt, etc. blocked by the gate are apt to accumulate, but the screw of the water supply device crushes them and pushes them to the downstream side. The gaps between the blades of the screw communicate with each other along the length direction of the cylindrical body of the water supply device, so that a piece of wood or the like can easily pass downstream. The water supply device has a simple configuration including only the cylinder and the screw, and does not cause a failure such as stopping a rotation of the screw by a piece of wood being caught between the screw and another member. Since the water supply device is provided at the lower part of the gate, it blows off mud, dust and the like accumulated at the bottom of the gate on the downstream side further downstream. Thereby, the flow of water near the gate can be improved. The check valve prevents water from flowing back from the downstream side of the gate to the upstream side through the cylinder of the water supply device.
Since the drive source of the water transmission device does not submerge in any case, the cost required for installation and the operation cost are lower than before, and the maintenance and inspection are easy.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. 1 and 2 show an embodiment of the present invention. As shown in FIGS. 1 and 2, a water gate provided with a water supply device has a gate 3 that can be moved up and down, a water supply device 6, and a check valve 7. The gate 3 has a circular through hole 5 at the bottom. The gate 3 is provided in the width direction of the drainage channel 1, and can block the water flowing through the drainage channel 1 and adjust the flow rate of the flowing water. As shown in FIG. 1, the water supply device 6 includes only a cylinder and a screw. The upstream end of the cylindrical body has the same size as the opening on the downstream side of the through hole 5. The cylindrical body of the water supply device 6 is attached to the opening on the downstream side of the through-hole 5 so as to project perpendicularly to the gate 3 to the downstream side. The screw of the water supply device 6 has a plurality of blades, and is provided in the cylinder so as to be rotatable coaxially with the cylinder of the water supply device 6 by the electric motor 9. As shown in FIG.
Each blade of the screw has a gap communicating with each other along the length direction of the cylindrical body. The water supply device 6 sends water upstream (the right side in FIG. 1) of the gate 3 to the downstream side (the left side in FIG. 1) through the through hole 5. The electric motor 9
A driving source of the water supply device 6, a support 10 for attaching the electric motor 9 to the water supply device 6, above the water supply device 6,
It is attached at a position higher than the gate 3 and the water surface 11 by a predetermined height. The check valve 7 is provided at a downstream end of the cylindrical body of the water supply device 6. The check valve 7 has a function of preventing the water on the downstream side of the drainage channel 1 from flowing back to the upstream side when the water supply device 6 is operated and stopped. The gate 3 is moved up and down by a gate elevator 12. The water supply device 6, the check valve 7, the support 10 and the electric motor 9 are configured to move up and down together with the gate 3.

Next, the operation will be described. By raising and lowering the gate 3, it functions as a normal floodgate. When the screw of the water supply device 6 is rotated with the gate 3 lowered, the screw feeds water on the upstream side of the gate 3 through the through hole 5.
Forcibly to downstream. Therefore, there is no need to pump water to a position above the gate 3 unlike the related art. When the height of the water surface 11 on the downstream side of the gate 3 becomes higher than the height of the water surface 11 on the upstream side, the heads on the upstream side and the downstream side can be reduced by controlling the amount of water to be sent. . On the upstream side of the gate 3, wood chips, mud, garbage, etc. blocked by the gate 3 are apt to accumulate.
Screw crushes them and pushes them to the downstream side. The gaps between the blades of the screw communicate with each other along the longitudinal direction of the cylindrical body of the water supply device 6, so that a piece of wood or the like can easily pass downstream. Since the water supply device 6 can crush and cut off pieces of wood, mud, garbage, etc. with a screw, there is no need to provide a strainer which is necessary for a normal pump, and the trouble of cleaning the clogged strainer is eliminated. Can be omitted. The water supply device 6
Since it is provided below the gate 3, the mud, dust and the like accumulated at the bottom of the downstream side of the gate 3 are blown further downstream. Thereby, the flow of water near the gate 3 can be improved. The check valve 7 prevents the water from flowing backward from the downstream side of the gate 3 to the upstream side through the cylinder of the water supply device 6 when the water supply device 6 is stopped. Therefore, if the gate 3 is lowered and the water supply device 6 is stopped, the water flowing through the drainage channel 1 can be blocked. The electric motor 9 that drives the water supply device 6 includes the gate 3 and the water surface 1.
1 and will not be submerged in any case, so installation costs and operating costs are lower than before,
Further, maintenance and inspection are easy.

A pumping operation was performed using a water gate provided with a water supply device of the embodiment. For comparison, a conventional pump-type water supply device using a submersible pump shown in FIG.
Pumping work was performed with the same water supply output. In both cases, the heads on the upstream and downstream sides were 0.5 m. Table 1 shows the working conditions and working results of the examples and comparative examples.

[0012]

[Table 1]

As is clear from Table 1, while the output of the water supply apparatus is the same, the water flow rate of the water supply apparatus of the embodiment is considerably larger than that of the comparative example, and efficient drainage is performed. I understand.

[0014]

According to the sluice provided with the water supply device according to the present invention, water can be efficiently sent from the upstream side to the downstream side of the gate, so that maintenance and inspection can be facilitated and operation costs can be reduced. And an industrially useful effect can be obtained. Further, according to the sluice provided with the water supply device according to the present invention, the gap between the blades of the screw communicates along the length direction of the cylinder of the water supply device, so that the gap between the blades passes through the gap between the blades. It is easy to pass through a piece of wood, etc., and the piece of wood, mud, garbage, etc. dammed on the upstream side of the gate can be crushed by a screw and pushed down to the downstream side. Since the screw has a simple structure, the screw is unlikely to fail. Further, according to the sluice provided with the water supply device according to the present invention, since the water supply device is provided at the lower part of the gate, it blows off mud and debris accumulated at the bottom of the downstream side of the gate further downstream, and The flow of water in the vicinity can be improved. further,
According to the sluice provided with the water supply device according to the present invention, the drive source of the water supply device is mounted at a position higher than the gate and the water surface above the water supply device, so that it does not sink in any case, In addition, the cost required for installation and the operating cost can be reduced, and maintenance and inspection are easy.

[Brief description of the drawings]

FIG. 1 is a sectional view of a water gate provided with a water supply device according to one embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a cross-sectional view illustrating an example of a gate provided with a conventional pumping device.

[Description of Signs] 1 drainage channel 2 submersible pump 3 gate 4 conduit 5 through hole 6 water supply device 7 check valve 8 screw 9 motor 10 support 11 water surface 12 gate lift 13 motor

Claims (1)

(57) [Claims] 1. A liftable gate, a water feeder, a check valve, and a drive source for the water feeder, wherein the gate has a through hole at a lower portion, and the water feeder comprises only a cylinder and a screw, The cylinder is provided in the through-hole so as to project perpendicularly to the gate on the downstream side, the screw has a plurality of blades, and is rotatably coaxially with the cylinder by a driving source of the water supply device. Provided in the cylinder, each blade has a gap communicating with each other along the length direction of the cylinder,
The check valve is provided at a downstream end of the cylindrical body, and a driving source of the water supply device is attached to a position higher than the gate and the water surface above the water supply device. Sluice gate equipped.