JPS6037246B2 - Automatic water spray device - Google Patents

Description

[Detailed Description of the Invention] In recent years, with the progress of housing development, the amount of flooding has increased, and
As residential areas move into low-lying wetlands, damage from overflowing irrigation canals is increasing.

In order to prevent such disasters from occurring, water canals are installed at important points along irrigation canals.They are used to prevent water from flowing into the canal when water is in use, and to prevent water from flowing into the canal in the event of a flood. For this reason, corner drops and sluice gates have traditionally been used as this drainage system.

Most of these are manual, and even if they are motorized, they usually rely on humans to operate them. Additionally, some attempts have been made to apply electrical technology to automatically operate the system, but this cannot be said to be completely foolproof considering accidents caused by lightning or power outages. Therefore, the present invention aims to provide a water discharge device that satisfies socially required conditions as a flood gate without requiring any power or operation.

First, the mechanism will be explained.

A gate body 3 is installed in the spillway 2 immediately downstream of the branch point from the main waterway 1.
is rotatably supported by two bearings 6 via an arm shaft 5, and an adjustable counterweight 7 is attached to the end of the arm 4. Drain port 2 on the side
0 leads to the spillway. There is a float chamber 8 in which a float 9 is connected to a connecting rod 10 and a float arm 11.
It is suspended from the shaft 5 via. On the other hand, a still water pond 13 is opened on the upstream side of the main canal 1 through a screen 12.
In the float chamber 8, there is a siphon 14 which also closes the incense □ and the discharge port, and the lower end of the top is connected to the main waterway 1.
It matches the planned water level of , and has a small hole 14a at the lower end of the curved outlet. On the other hand, on the downstream side of the main waterway 1,
A water level adjustment chamber 16 that is closed with a water passage hole 15 is provided.

A water level control pipe 17 is installed in the water level control chamber 16, and only its lower end 17a is open. The other end of the siphon breaker 18, which is provided with a built-in opening 18a, communicates with the top of the siphon 14.The top of the water level adjustment pipe 17 branches into an intake pipe 19, and the other end , closes into the waterway 2 at a predetermined height.

Next, its functions will be explained.

At all times, that is, when the water level in the main waterway 1 is low, there is no overflow from the siphon 14 and no water enters the float chamber 8, so the door body remains fully closed. However,
When the water level reaches the planned water level due to flooding, the siphon 14
On the other hand, when the mirror-shaped opening 18a is submerged, the supply of air to the siphon 14 is restricted, so the amount of air flowing into the float chamber 8 increases due to the siphon effect, and the water drains from the drain port 20. Since the water supply capacity of the siphon 14 is greater than the water supply capacity, the water level in the float chamber 8 rises, and the buoyancy of the float 9 causes the door body 3 to open slightly.
As a result, when the water level on the downstream side of the main waterway 1 reaches a predetermined height, the air supply limiting force stops increasing, and the door body is maintained at that opening degree. If the flow rate increases further,
The door body opens according to the same principle, the amount of water discharged increases, and the water surface a at the water passage hole 15 is maintained at a constant water level, a predetermined amount of water is delivered, and only so-called surplus water is discharged. In this way, when there is light rain, it is necessary to maintain water supply, but if it continues to rain, there is no need for water supply.On the other hand, since irrigation canals run almost along the contour lines at the foot of the mountains, it is necessary to maintain the water supply from the downstream mountains. In preparation for the influx of flood water, it is desirable to release all the water and empty the canals. As mentioned above, since the water level of the downstream waterway is kept constant, such an increase in flood volume automatically results in an increase in the amount of water released, so the water level b of the water discharge according to the predetermined amount of water released is Closed part 19a of high-quality intake pipe 19
If set, the air supply to the siphon will be completely cut off, and as the amount of water flowing into the float chamber 8 increases and the water level rises, the door body 3 will be fully opened and the entire amount of water can be discharged. The two-dot chain line in each figure shows the water level adjustment state immediately before the start of full water discharge, and the solid line shows the state immediately after the start of full water discharge.

In this way, if the lower end 17a of the water level control pipe 17 is set to the water level C when the flood volume reaches a level that allows the flood to flow down safely even if it is fully closed after reaching the peak of the flood, the siphon The action is eliminated, the door body is automatically fully closed, and water supply begins.

In this way, this device not only has a simple structure in terms of mechanism and does not require any power or human operation, but also has functions such as water utilization during light rain, water level adjustment for disaster prevention, and downstream waterway control during heavy rain. Full water discharge for protection and full closing operation to start water supply after the flood has passed, etc.
There are many things that have ideal functions and benefit society.

[Brief explanation of the drawing]

Figure 1 is a plan view of an embodiment of the present invention, and Figure 2 is A of Figure 1.
-A arrow view. FIG. 3 is a view taken along the line B-B in FIG. 1. FIG. 4 is a view taken along the line C--C in FIG. 1. Figure 5 is an enlarged view of the main parts. Figure 6 shows
FIG. 2 is a view taken along the line DD in FIG. 1; The numbers shown in each figure are: 1 is the main waterway, 2 is the spillway, 3 is the door body, 4 is the arm, 5 is the shaft,
6 is a bearing, 7 is a counterweight, 8 is a float chamber,
9 is a float, 1 is a connecting rod, 11 is a float arm,
12 is a screen, 13 is a still water pond, 14 is a saifon,
15 is a water hole, 16 is a water level adjustment chamber, 14 is a water level adjustment pipe,
18 is a siphon breaker, 19 is an intake pipe, and 20 is a drain port. Tsutomu S figure hair' figure 2 figure Taizo Tsutomu 4 figure hair 6 figure

Claims (1)

[Scope of Claims] 1. An intake pipe 19 that opens at a predetermined height into the flowing water of the tailrace channel or into the water connected thereto, and an intake pipe 19 that opens at a predetermined height into the flowing water of the main waterway or into the water connected thereto. A water level adjustment pipe 17 whose other end is opened at a height of The siphon 14 is made up of a siphon 14 with one end opened at the top thereof, and the other end of the siphon breaker 18 is opened at the top of the siphon 14 to constitute a water level detection mechanism, and the flowing water of the main waterway flows out from the other end of the siphon 14 to the side of the discharge channel. An automatic water discharge device that controls the water gate by a part of the water gate. 2. The automatic water discharge device according to claim 1, wherein the water gate is constituted by a tender gate having a counterweight and a float that directly drives the tender gate.