JPH0655084B2 - Water intake device - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a water intake device used when water is taken mainly from water with different water levels such as the sea, lakes and rivers.

[Conventional technology]

Conventionally, in order to take in seawater to a fish farm or the like provided on land, an intake pipe having an underwater drinking port was provided and seawater was sucked by a pump.

However, the longer the pipeline, the larger the capacity of the pumping pump needs to be, resulting in a problem that the facility cost and the electricity usage cost are very large.

[Problems to be Solved by the Invention]

The present invention has been made in order to solve the above-mentioned conventional problems, and even if the water intake pipe for taking water from a submerged drinking cup becomes long, it is not necessary to make the capacity of the pumping pump so large. Moreover, it is a problem to be solved to provide an economical water intake device that can be installed without requiring large-scale construction.

[Means for Solving the Problems]

As a means for solving the above-mentioned problems, the water intake device of the present invention extends to a land part a water intake pipe having a dovetail at the bottom of the water where there is a difference in ebb and flow of water such as the sea, and the land part Is installed at a height between the high and low tide levels, and the outlet of the intake pipe is opened at a position lower than the low tide level in the intake tank installed on the land, and It is constructed by providing a pumping line that connects to a pumping pump in the intake tank.

That is, the water intake device of the present invention introduces water intake into a water intake tank using a principle of siphon, or natural flow down through a water intake pipe, to a facility requiring water intake such as a fish farm installed on land. The feature is that only the power energy pumped from the intake tank by the pump is consumed. Further, in the water intake device of the present invention, in order to position the extension portion of the intake pipe in the land portion between the high tide level and the low tide level, the entire intake pipe is naturally positioned lower than the low tide level. Compared to the case where water is taken down, that is, water is taken only by using natural power, the land excavation depth for laying the water intake pipe on the land becomes shallower, so large-scale excavation work is not only necessary. Therefore, maintenance of the intake pipe after installation will be easy.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.
-A is a side sectional view in which a water intake pipe of an intake device according to an embodiment of the present invention is laid, and FIG. 1-B is an enlarged side sectional view of an intake tank to which FIG. 1-A is connected, 1 is a plan view of FIG. 1 and FIG. 3 is a front view of the screen of FIG. 1-B.

First, as shown in Fig. 1-A, this water intake device is for taking in seawater having a tidal level difference to a facility in the land part 3 which requires the seawater and pumps it up. H. high tide. W. L, the low tide is L. W. It is indicated by L.

Therefore, at the bottom of the water, a water intake pipe 2 having a mouthpiece 1 at the tip end is laid toward the land part 3. This water intake pipe 2 also reaches the high tide level H. W. Lower than L,
Low tide L. W. It is laid at a position higher than L.

Next, the intake tank 4 shown in FIG. 1-B is installed near the facility that requires seawater.
Is the high tide level H. W. Lower than L, low tide L. W. It is installed in the water intake tank 4 while maintaining a position higher than L, and its discharge port 5 is at low tide level L.L. W. Open at a position lower than L.

A pit 6 is provided below the discharge port 5 in the water intake tank 4 for precipitating sediment, dirt and the like in the water intake.

Further, a partition frame 7 shown in FIG. 2 is provided in the water intake tank 4, and is partitioned by the screen 8 of the wire mesh as shown in FIG. 3, and the pumping pump 9 is connected to the tank on the side opposite to the partitioned discharge port 5. A pipe line 10 for pumping water is provided.

In FIG. 1-B, 11 is a valve, the water intake tank 4 is covered with a lid 12 made of a steel plate, and the pumping pump 9 is a pumping pump stop water level P.P. S. Pumping is stopped at L.

In the water intake device configured as described above, when the seawater level is higher than the highest part of the intake pipe 2, seawater flows into the intake tank 4 by gravity flow via the intake pipe 2. However, when the seawater level is lower than the highest part of the intake pipe 2, seawater is introduced into the intake tank 4 by the siphon principle.

In addition, sediments and the like that have flowed in together with seawater are accumulated at the bottom of the pit 6, and floating debris and the like are blocked by the screen 8 so that they do not move to the pumping pipe 10 that is connected to the pumping pump 9. There is.

〔The invention's effect〕

As described above, according to the extraction device of the present invention, since the seawater is guided to the intake tank provided near the facility that uses the seawater by natural flow or by the siphon principle, No power is required for water intake regardless of the length of the pipe, and the pumping pump has a very short distance to draw seawater, so that the pump capacity can be reduced.

Therefore, the device of the present invention has an advantage that the cost of pumping equipment and the use of electric power are significantly reduced as compared with the conventional device, and the device becomes an economical water intake device.

Further, in the water intake device of the present invention, as compared with the case of performing water intake using only natural power, the land excavation depth for laying the water intake pipe on the land becomes shallow, and thus large-scale excavation work is performed. Is not necessary at all, and maintenance of the intake pipe after installation is easy.

The water intake device of the present invention can be effectively applied to water intake from lakes, rivers, etc., which have different tides, in addition to the sea where the tides are tidal.

[Brief description of drawings]

FIG. 1-A is a side sectional view in which an intake pipe line of an intake device according to an embodiment of the present invention is laid, and FIG. 1-B is an enlarged side sectional view of an intake tank to which FIG. 1-A is connected, 2 is a plan view of FIG. 1, and FIG. 3 is a front view of the screen of FIG. 1-B. 1 ... Drinking mouth, 2 ... Intake pipe line, 4 ... Intake tank, 5 ... Discharge port,
9 ... Pumping pump, 10 ... Pumping line, H. W. L ... high tide, L.I. W. L ... low tide.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Isao Iida 18 Toa Construction Industry Co., Ltd., Nihon-odori, Naka-ku, Yokohama-shi, Kanagawa Prefecture (72) Takahito Nishihara 5 Yonbancho, Chiyoda-ku, Tokyo 5 Toa Construction Industrial Co., Ltd. Within

Claims (1)

[Claims] 1. A water intake pipe having a dovetail at the bottom of the water in which water levels are different from each other is extended to a land part, and the land part is located at a height between the high tide level and the low tide level. Laid like
A water intake device in which a discharge port of the water intake pipe is opened at a position lower than the low tide level in a water intake tank provided in a land portion, and a water intake pipe line connected to a water pump is provided in the water intake tank.