JPH03191736A - Water-intake apparatus - Google Patents

Abstract

PURPOSE:To obtain an economical water-intake apparatus workable without increasing the capacity of a storage pump of an intake tank by laying an intake line of an intake tank at a position below the high water level and providing the intake line with an intake port opened at the water-bottom and with a discharging port opened at a position below the low water level. CONSTITUTION:When the sea level is in the high water level(H.W.L) which is higher than the highest part of the intake line 2 of the objective water-intake apparatus having the above construction, sea water spontaneously flows down into the intake tank 4 through the line 2. When the sea level is in the low water level(L.W.L) which is lower than the highest part of the intake line 2, sea water is introduced into the tank 4 by the principle of siphon. Accordingly, the power for water-intake is unnecessary independent of the length of the line 2. Furthermore, the capacity of a storage pump 9 of the tank 4 for supplying water 10 to a fish farm is not necessarily increased to a remarkable extent even if the line 2 for taking water from the intake port 1 is elongated. Consequently, the present apparatus is an economical water-intake apparatus.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a water intake device used to take water mainly from the sea, lakes, rivers, etc., where there is a tidal difference in water level.

[Prior Art] Conventionally, in order to take seawater into a fish farm or the like established on land, a water intake pipe having a spout in the sea has been provided, and the seawater has been sucked in using a pump.

However, as the pipeline becomes longer, the capacity of the water pump needs to be increased, which poses a problem in that equipment costs, electricity consumption, etc. become extremely high.

[Problem to be solved by the invention]

The present invention has been made to solve the above-mentioned conventional problems, and even if the water intake pipe that takes water from the underwater mouth becomes long, there is no need to increase the capacity of the water pump. The objective was to provide an economical water intake device.

[Means to solve the problem]

As a means for solving the above problems, the water intake device of the present invention has a water intake pipe that has a spout at the bottom of the water, such as the sea, where there is a tidal difference in water level, and is installed at a position lower than the high tide level. The system is constructed by providing a water intake tank in which the discharge port of the water intake pipe opens at a position lower than the low tide level, and providing a spout of the water pumping pipe connected to the pump in the water intake tank.

In other words, the water intake device of the present invention introduces water into a water intake tank by gravity through a water intake pipe or by using the siphon principle to reach a facility that requires water intake, such as a fish farm established on land. This system is characterized by the fact that only the power energy used to pump water from the water intake tank using the water pump is consumed.

〔Example〕

The present invention will be described in detail below with reference to the drawings.
Figure A is a side sectional view of a water intake pipe installed in a water intake device according to an embodiment of the present invention, Figure 1-B is an enlarged side sectional view of a water intake tank to which Figure 1-A is connected, and Figure 2 is the plan view of Figure 1,
FIG. 3 is a front view of the screen of FIG. 1-B.

First of all, as shown in Figure 1-A, this water intake device is for taking in and pumping seawater, which has a difference in tidal level, to the facilities that require the seawater on land 3. The high tide level is indicated by HoW, shi, and the low tide level is indicated by hi, W, and L.

Therefore, at the bottom of the water, a water intake pipe 2 with a spout L at the tip is laid toward land 3, but this water intake pipe 2 is placed at a position lower than the high tide levels H0W and L on land 3 as well. It is being installed.

Next, the water intake tank 4 shown in Fig. 1B is installed near the facility that requires seawater, but the water intake pipe 2 shown in Fig. 1-A is
It is installed in the water intake tank 4 at a height lower than the high tide levels H, W, and L, and its discharge port 5 is opened at a position lower than the low tide levels W and L.

A pit 6 is provided below the discharge port 5 in the water intake tank 4 to allow sediment, dirt, etc. in the intake water to settle.

In addition, a partition frame 7 shown in FIG. 2 is installed in the water intake tank 4, and the water intake tank 4 is partitioned with a wire mesh screen 8 as shown in FIG. A water pumping pipe 10 is provided.

In addition, 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 water pump 9 is operated at a water pump stop level P in the water intake tank 4,
Pumping stops at S and L.

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

In addition, the earth and sand that flowed in with the seawater accumulates at the bottom of the pit 6, and the floating debris is blocked by a screen 8 and is prevented from moving into the water pumping pipe 10 that connects to the water pump 9. There is.

〔Effect of the invention〕

As explained above, according to the extraction device of the present invention, seawater is guided by gravity or flow according to the siphon principle to a water intake tank installed near a facility that uses seawater. No power is required for water intake regardless of the length of the pipe, and the distance over which seawater is sucked by the pump is very short, so the pump capacity can be reduced.

Therefore, the apparatus of the present invention has the advantage that the cost of pumping equipment and the amount of electricity used are significantly reduced compared to the conventional apparatus, resulting in an economical water intake apparatus.

In addition, the water intake device of the present invention can be effectively applied to water intake from lakes, marshes, rivers, etc., which have different tidal levels, other than ditches that have tidal levels.

[Brief explanation of drawings]

Figure 1-A is a side sectional view of a water intake pipe installed in a water intake device according to an embodiment of the present invention, Figure 1B is an enlarged side sectional view of a water intake tank to which Figure 1-A is connected, and Figure 1-A is an enlarged side sectional view of a water intake tank to which Figure 1-A is connected. The figure is a plan view of the screen shown in FIG. 1, and FIG. 3 is a front view of the screen shown in FIG. 1-B. l... Drinking spout, 2... Water intake pipe, 4... Water intake tank,
5...Discharge port, 9...Lifting pump, lO...Pumping pipe, H, W, L...High tide level, L, W, L...
・Low tide level.

Claims (1)

[Claims] A water intake tank in which a water intake pipe with an inlet at the bottom of the water where there is a tidal difference in water level is laid at a position lower than the high tide level, and the outlet of the water intake pipe opens at a position lower than the low tide level. A water intake device that is equipped with a water intake tank and a water pumping pipe connected to a water pump in the water intake tank.