JP3094175U - Siphon type surface water intake device - Google Patents

Abstract

(57) [Abstract] (with correction) [Problem] To reduce both the running cost and the equipment cost of a siphon type surface water intake device. SOLUTION: A water intake pipe 3 is disposed across a top end 2a of a bank 2 such as a reservoir 1 and a flexible intake pipe 6 is connected to a water inflow side of the intake pipe to float on a water surface of the reservoir 1 and the like. 8, a water intake cylinder 15 whose upper end opening is located below the water surface.
Is attached to the lower end opening of the water intake tube 15, the opening end 6 b of the flexible water intake pipe 6 is connected, and a top plate having a water intake hole is provided at the upper part in the water intake tube 15. A water-permeable plate 21 is provided below the
A check valve that moves upward by buoyancy to close the intake hole of the top plate and moves downward by the inflow water pressure from the intake hole side to open the intake hole, and the intake pipe 3 Intake valve 4 on the water outflow side
A priming water injection valve 5 is provided in the intake pipe 3 at a position upstream of the intake valve 4.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

  The present invention relates to a siphon type surface water intake device.

[0002]

[Prior art]

  Conventionally, an intake pipe has been installed across the top of the dam, and the intake pipe has a flare on the inflow side of the pond. While connecting the kisible intake pipe, open the flexible intake pipe under the water surface. Connect to the upper opening of the water intake floating body, and install an intake valve at the downstream end opening of the intake pipe. Provided with a vacuum pump and a vacuum break valve located just above the top of the dam of the intake pipe, Furthermore, it is connected to the intermediate part of the vacuum break valve of the intake pipe and the intake valve, and equipped with a water filling valve. A siphon-type intake device for a reservoir with a penetrating water supply pipe that opens into the pond. (For example, see Patent Document 1).

[0003]   In addition, it floats to the surface of the water by a float, and the lower end opening is taken and water is discharged through a water hose. Equipped with a water intake pipe connected to the pipe, the outer circumference of the upper water intake opening of this water intake pipe is surrounded by a float. There is a surface water intake device that prevents floating debris from entering the upper intake opening ( See, for example, Patent Document 2).

[0004]

[Patent Document 1]       Japanese Utility Model Publication No. 5-47030 (page 2-5, FIG. 1)

[Patent Document 2]       JP-A-8-120650 (page 2-3, FIG. 3)

[0005]

[Problems to be solved by the device]

  Since Patent Document 1 requires a vacuum pump at the time of water intake, There is a problem that the cost becomes high, and Patent Document 2 requires a large amount for installation of a water discharge pipe or the like. There is a problem that the equipment cost will be high because it requires more civil engineering work .

[0006]   The present invention has been made to solve the above-mentioned problems, and it requires running cost and installation. Providing a siphon-type surface water intake device that can reduce both equipment costs The task is to do so.

[0007]

[Means for Solving the Problems]

  In order to solve the above problems, the present invention has an intake pipe that straddles the top of a dam such as a reservoir. A flexible intake pipe is connected to the water inlet side of the intake pipe, The float that floats on the surface of the water such as a pond is equipped with a water intake cylinder with the upper end opening located below the surface of the water. The opening end of the flexible water intake pipe is connected to the lower end opening of the water intake cylinder, A top plate with intake holes is provided on the upper part of the water intake cylinder, and Is provided with a water-permeable plate, and the top plate is moved upward by buoyancy between the top plate and the water-permeable plate. There is a check valve that closes the intake hole of the and closes the intake hole and moves downward with the water pressure from the intake hole side to open the intake hole. On the other hand, a water intake valve is installed on the water outflow side of the water intake pipe, and upstream of this water intake valve. Siphon type surface layer characterized in that the intake pipe at the position is provided with a priming water injection valve A water intake device is provided.

[0008]   According to the present invention, in preparation for water intake, the intake valve is closed, and a portable engine pump or the like is used. When priming water is injected from the priming water injection valve into the intake pipe at The outlet side is stopped by the intake valve, and the water inlet side of the intake pipe is a flexible intake pipe. The check valve moves up by buoyancy and closes the water intake hole of the top plate by flowing into the water intake pipe from When you close the priming water injection valve in this state, It will be retained between the valve and the intake valve.

[0009]   Then, at the time of water intake, if the intake valve is opened, the intake pipe on the downstream side from near the top of the dam is opened. When the priming water flows down to the water outflow side, it becomes priming water, and near the top of the dam. From the upstream intake pipe, flexible intake pipe and intake pipe to the siphon phenomenon As a result, the check valve is lowered by the inflow water pressure from the intake hole side, The water intake hole will be opened while being held by.

[0010]   This allows surface water from reservoirs, etc. to flow from the intake holes into the intake pipes, allowing flexible intake. Since water flows out from the water intake pipe through the water intake pipe through the water intake pipe, water intake continues without power thereafter. Will be done.

[0011]   To stop water intake, close the water intake valve to stop the outflow of water from the water intake valve. The water outlet side of the intake pipe is stopped by the intake valve, and the water inlet side of the intake pipe is The check valve is lifted by buoyancy due to the water remaining in the water bottle to stop it by closing the water intake hole on the top plate. The remaining water between the check valve and the intake valve is the priming water for the next intake. Will be retained as.

[0012]   In this way, by providing a check valve on the float water intake cylinder, Since the priming water can be retained between the check valve and the intake valve, Once the priming water has been injected into the intake pipe with an engine pump, etc. Since the work of injecting priming water is unnecessary, running costs will be cheaper. Moreover, large-scale civil engineering work is not required, so the equipment cost is also low.

[0013]   As in claim 2, when the check valve is a sphere, the vertical movement is smooth, and the check valve is removed. Less likely to cause water damage.

[0014]   As in claim 3, the check valve moves vertically between the top plate and the water-permeable plate. If a guide member that guides the check valve is provided, vertical movement of the check valve will be smoother. The water intake hole can be opened and closed reliably.

[0015]   According to a fourth aspect, when the top plate is formed with an air vent, the intake pipe and the flap are Since no air remains in the flexible intake pipe and intake pipe, the function of the siphon phenomenon is hindered. It will not occur.

[0016]

[Embodiment of device]   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

[0017]   As shown in FIG. 1, the top 2a of the dam 2 provided in the reservoir 1 has a substantially inverted U shape. A water intake pipe 3 is installed across the water intake pipe, and a water intake valve 4 is provided on the water outflow side of the water intake pipe 3. In addition, the top end 2a of the intake pipe 3 located upstream of the intake valve 4 is called. A water injection valve 5 is provided. The water intake opening 3a of the water intake pipe 3 is flexible. One end opening 6a of the water intake pipe 6 is connected.

[0018]   On the other hand, a float 8 that floats on the water surface L of the reservoir 1 is provided. 8 is vinyl chloride, stainless steel or F as shown in detail in FIGS. 2 and 3. The RP pipe is airtightly connected in a rectangular shape. A pouring drainage port 9 is provided, and a socket 10 with a plug attached to the pouring drainage port 9 Adjust the buoyancy of the float 8 by injecting or draining water from the float 8 Then, the upper end opening 15a of the water intake cylinder 15, which will be described later, can be set so as to be located below the water surface L. I am trying to do it.

[0019]   A mooring rope 12 is connected to the float 8 via an eye nut 11. The float 8 can be moored to the bottom of the pond or the wall (dam) of the pond.

[0020]   The lower surface of the float 8 has a rectangular shape slightly smaller than the float 8. The outer periphery of the connecting body 14 that also serves as a screen is fixed, and the connecting body 14 is flat. It is configured by combining bars 14A in a grid pattern at a predetermined pitch.

[0021]   The upper end of a water intake cylinder 15 having a bottomed cylindrical shape is fitted and fixed to the inner peripheral portion of the connecting body 14. The screen 16 is fitted and fixed in the upper end opening 15a of the water intake cylinder 15. There is. This screen 16 has flat bars 16A assembled in parallel at a predetermined pitch. It is composed together.

[0022]   A flanged pie is provided in the lower end opening 15c formed in the bottom portion 15b of the water intake cylinder 15. 17 is connected, and the opening of the flexible intake pipe 6 is connected to this flanged pipe. The end flange 6b is connected.

[0023]   A top plate 20 having a water intake hole 20a formed in the central portion is provided at an upper portion of the water intake cylinder 15. A screen-shaped water-permeable lower plate is provided in the lower part of the water intake cylinder 15 while being provided. 21 is provided. A small hole 20b for venting air is formed in the top plate 20. ing.

[0024]   Between the top plate 20 and the water-permeable lower plate 21, the water intake hole of the top plate 20 is moved upward by buoyancy. (Valve seat) 20a is closed (see Fig. 4), and the inflow water pressure from the water intake hole 20a side causes buoyancy. Spherical check valve that moves downward to open the water intake hole 20a (see Fig. 3) 22 is provided.

[0025]   At the position where the check valve 22 is moved downwards, the check valve 22 is positioned slightly below the lower half of the check valve 22. A lean water-permeable intermediate plate 23 is provided, and the water-permeable intermediate plate 23 and the top plate 20 are combined. In between, as shown in FIG. 5, a plurality of (at the same angular position on the circumference of the outer circumference of the check valve 22). In this example, four guide poles 24 are provided at intervals of 90 degrees. The vertical movement of the check valve 22 is guided by 24.

[0026]   The operation of the siphon type surface water intake device configured as described above will be described.

[0027]   First, in preparation for water intake, after closing the water intake valve 4 of the water intake pipe 3, Pump to inject priming water from the priming water injection valve 5 into the intake pipe 3.

[0028]   This priming is stopped by the intake valve 4 on the water outflow side of the intake pipe 3 and The water inflow side of No. 3 flows into the water intake pipe 15 from the flexible water intake pipe 6, and As shown in, the check valve 22 moves upward by buoyancy to close the water intake hole 20a of the top plate 20. You can stop it. At this time, the air vent small hole 20b of the top plate 29 The air is evacuated and the air remains in the intake pipe 3, the flexible intake pipe 6, and the intake pipe 15. Therefore, the function of the siphon phenomenon described later will not be hindered.

[0029]   When the priming water injection valve 5 is closed in this state, the priming water is discharged between the check valve 22 and the intake valve 4. Will be held in.

[0030]   Then, at the time of water intake, if the intake valve 4 is opened, the area from the vicinity of the top 2a of the dam 2 to the downstream side When the priming water of the intake pipe 3 flows down to the water outflow side, it becomes priming water and 2, the intake pipe 3, the flexible intake pipe 6 and the intake pipe 1 on the upstream side from the vicinity of the top 2a. As a result of the priming water of No. 5 flowing out by the siphon phenomenon, as shown in FIG. 22 was moved down by the inflow water pressure from the water intake hole 20a side, and was held by the water-permeable lower plate 21. In this state, the water intake hole 20a is opened.

[0031]   Since the check valve 22 is a sphere, the check valve 22 moves smoothly up and down to prevent water intake. The guide pole 24 between the top plate 20 and the water-permeable lower plate 21 Therefore, since the check valve 22 is guided to move up and down, the check valve 22 moves up and down. The movement becomes smoother, and the opening and closing of the water intake hole 20a becomes reliable.

[0032]   As a result, the surface water of the reservoir 1 will not allow the inflow of debris floating on the water surface L to flow. A connector that also serves as a screen for the inflow of debris floating in the water that is blocked by the gate 8. 14 and screen 16 flow into the intake pipe 15 through the intake hole 15a while being blocked. Then, since it flows out from the intake pipe 3 through the flexible intake pipe 6 and the intake valve 4, After that, water intake will continue without power.

[0033]   To stop water intake, close the water intake valve 4 to stop the outflow of water from the water intake valve 4. Stop, the water outlet side of the intake pipe 3 is stopped by the intake valve 4, and the water flow of the intake pipe 3 On the inlet side, the water remaining in the intake pipe 15 causes the check valve 22 to move upward due to buoyancy, and It can be stopped by closing the water intake hole 20a. The water remaining during the period will be retained as priming water for the next intake.

[0034]   In this way, by providing the check valve 22 in the water intake cylinder 15 of the float 8, When stopping, the priming water can be retained between the check valve 22 and the intake valve 4. Therefore, if you prime the intake pipe 3 with a portable engine pump etc. once, After that, there is no need to inject priming water over a long period of time, so running costs Is cheaper, and large-scale civil engineering work is not required, so equipment costs are low. It is worth it.

[0035]

[Effect of device]

  As is clear from the above description, the present invention has a check valve installed in the water intake tube of the float. This prevents priming water from being retained between the check valve and the intake valve when the intake is stopped. Since it can be stored, priming water is once injected into the intake pipe with a portable engine pump, etc. If this is done, it will not be necessary to inject priming water for a long period of time thereafter, so run Because the cost of training is low and large-scale civil engineering work is not required, The equipment cost is also low.

[0036]   If the check valve is a sphere (Claim 2), the check valve can move up and down smoothly. It is less likely to become an obstacle to water intake.

[0037]   Further, a check valve is installed between the top plate and the water-permeable plate to guide the check valve so that it moves vertically. If the id member is provided (Claim 3), the check valve can be moved up and down more smoothly. , The opening and closing of the intake hole will be reliable.

[0038]   In addition, when an air vent is formed on the top plate (Claim 4), the intake pipe and the flexible intake are No air remains in the water pipe or intake pipe, so the function of the siphon phenomenon will not be hindered. .

[Brief description of drawings]

FIG. 1 is a side view of a siphon type surface water intake device.

FIG. 2 is a plan view of a siphon type surface water intake device.

FIG. 3 is a front sectional view of the check valve in FIG.

4 is a front sectional view of the check valve of FIG. 2 when the check valve is moved upward.

FIG. 5 is a plan sectional view of a guide pole.

[Explanation of symbols]

1 reservoir 2 dam 2a Crown 3 intake pipe 3a Water inflow opening 4 intake valve 5 priming water injection valve 6 Flexible intake pipe 8 floats 15 water intake 15a Top opening 20 Top plate 20a Water intake hole 20b Air vent small hole 21 Water-permeable lower plate 22 Check valve 23 Water-permeable middle plate 24 guide pole

Claims (4)

[Scope of utility model registration request] 1. A water intake pipe is disposed across the top of a dam such as a reservoir, and a flexible water intake pipe is connected to the water inflow side of the water intake pipe, and an upper end opening is provided in a float that floats above the water surface of the water reservoir. Is installed below the surface of the water,
The opening end of the flexible water intake pipe is connected to the lower end opening of the water intake pipe, a top plate having water intake holes is provided in the upper part of the water intake pipe, and a water-permeable plate is provided in the lower part of the water intake pipe. A check valve is provided between the top plate and the water-permeable plate, which moves upward due to buoyancy to close the water intake hole of the top plate and moves downward by the water pressure flowing in from the water intake hole side to open the water intake hole. On the other hand, a siphon-type surface water intake device, wherein an intake valve is provided on the water outflow side of the intake pipe, and a priming water injection valve is provided on the intake pipe at a position upstream of this intake valve. 2. The siphon type surface water intake device according to claim 1, wherein the check valve is a sphere. 3. The siphon-type surface water intake according to claim 1, wherein a guide member is provided between the top plate and the water-permeable plate so as to guide the check valve to move vertically. apparatus. 4. The siphon-type surface water intake device according to claim 1, wherein the top plate is formed with an air vent.