JPS6249405B2 - - Google Patents

Description

[Detailed Description of the Invention] Conventionally, an inflow control valve provided on a float is operated from the ground, but the adjustment operation line may break or relax as the water intake position changes up or down due to rises and falls of the water level. The opening degree of the on-off valve installed at the water intake port fluctuated due to changes in the water level, causing changes in the amount of water intake, making it difficult to intake a constant amount of water.

The present invention is characterized in that the opening/closing valve operation line for remotely controlling the opening/closing valve of the water intake provided on the float is free from tension and relaxation regardless of the elevation and descent of the float and water intake due to the rise and fall of the water level, and the opening/closing valve can be operated regardless of water level fluctuations. The purpose of this is to prevent fluctuations in opening/closing and opening degree.

The present invention provides a surface water intake device in which a float is provided at the upper end of a water conduit pipe pivotally supported at the bottom of a dam, and a water intake is provided at the upper end. It is composed of a water intake amount control device that is connected to the valve section and the operation section on the dam side through the center of the bottom pivot shaft of the water pipe.

The present invention will be described with reference to an embodiment shown in the drawings. The base of a water conduit 2 is pivotally supported at the bottom of an upright or inclined dam 1, and the upper end thereof is pivotally supported on a float 3. A surface water intake device is formed by opening a water intake port 4 at this upper end. The water intake port 4 is provided with an opening/closing valve 5, and a line 6 for opening/closing operation thereof is stretched through the center line a of the bottom pivot shaft 7 of the water conduit 2 to the operating portion 8 of the valve 5, The operating section 8 is provided on the dam 1 side or on the ground side.

The bottom of the dam 1 has a water intake hole 10 with a lift gate 9, and reinforcing walls 11, 11 protruding from both sides of the gate 9 have bearings 12 on both sides of the T-shaped shaft pipe 7' of the water conduit 2. , 12, and can rotate from the solid line position in FIG. 1 to the imaginary line position as the water surface 13 rises and falls. The water intake 4 is formed by opening the other end of a T-shaped horizontal pipe 14 with one end closed and provided at the upper end of the water conduit 2, and inserting both sides of the coaxial pipe 14 into the bearing holes 15 of the floats 3, 3. support The on-off valve 5 is provided in the coaxial pipe 14 and is shown in a closed state in FIG. Wire ropes are used for the operating wires 6, 6, and the bottom T-shaped shaft tube 7' is connected as shown in FIGS. 7 and 8.
The upper and lower contact portions of two sets of upper and lower pulleys 16, 16 and 17, 17 provided at the closed end of the (bottom pivot shaft 7) are arranged in the center of the T-shaped shaft tube 7'. , 6 are two sets of upper and lower pulleys 16, 16 and 1.
Dam 1 bypasses the upper and lower contact parts of 7 and 17, respectively.
The operating part 8 is formed by connecting both ends of a chain 20 which is extended to the top end 18 of the chain 20 and is hung around a chain wheel 19 which is pivotally supported on the top end 18, and a handle 22 is provided on the spindle 21 of the chain wheel 19. be done. When power is used to open and close the on-off valve 5, an electric motor is connected to the operating shaft of the valve 5, and a captire cable or other power cable is used as the operating wire 6. 23 in the figure is a chain wheel provided on the opening/closing shaft of the on-off valve 5, and 24 is a chain that is wound around the wheel 23, and the operating wires 6, 6 are connected to both ends of the chain. Reference numeral 25 denotes an introduction pipe connected to the open end of the T-shape shaft pipe 7' via a rotary coupling 26, which communicates with the water intake hole 10. Further, the water depth h of the water intake port 4 is kept constant.

Therefore, when the handle 22 of the operation part 8 provided on the top end 18 is rotated in the forward and reverse directions, the chain wheels 19 and 23 are rotated in the forward and reverse directions via the operating wires 6 and 6 and the chains 20 and 24. This opens and closes the butterfly-shaped on-off valve 5, and by rotating the handle 22, the angle of inclination of the valve 5 can be adjusted to adjust the amount of water flowing in from the water intake port 4. This adjustment is performed regardless of the rotation of the water pipe 2 due to the rise and fall of the float 3 as the water surface 13 rises and falls (rise and fall of the water level), and the movement of the operating filaments 6, 6 on the bottom pivot shaft 7 of the pipe 2. , so even if the vertical position of the water intake port 4 changes, the length of the above-mentioned filaments 6, 6 from the center of the bottom pivot shaft 7 to the on-off valve 5 will change. doesn't happen.

Since the present invention is constructed as described above, even if the position of the water intake port 4 changes in the vertical direction due to the up and down movements of the water level due to fluctuations in the water level, the operating filament 6 can be cut (tensioned).
There is no relaxation, there is no opening/closing of the on-off valve 5, and there is no variation in the degree of opening, and a constant amount of water can be stably taken in from the operation part 8 regardless of the rise and fall of the water surface 13.

[Brief explanation of the drawing]

Fig. 1 is a side view showing the water intake amount control device in the surface water intake device of the present invention, Fig. 2 is a plan view of Fig. 1, Fig. 3 is a front view of Fig. 1, and Fig. 4 is a view of the water intake. An enlarged view, Fig. 5 is a side view of the butterfly-shaped on-off valve, Fig. 6 is a side view of the operating section, Fig. 7 is an enlarged view of the bottom pivot shaft,
FIG. 8 is a side view taken along line AA in FIG. 7. 1...Dam, 2...Water pipe, 3...Float,
4...Water intake, 5...Opening/closing valve, 6...Operating wire, 7...Bottom pivot shaft, 8...Operation section.

Claims (1)

[Scope of Claims] 1. In a surface water intake device in which a float 3 is provided at the upper end of a water conduit 2 pivotally supported at the bottom of a dam 1, and a water intake 4 is provided at the upper end, opening/closing of the water intake 4 is provided. A water intake amount control device in which an actuation line 6 of the valve 5 is stretched between the valve 5 part and the operating part 8 on the dam 1 side through the center of the bottom pivot shaft 7 of the water conduit pipe 2. 2. The water intake amount control device according to claim 1, wherein the on-off valve 5 is a remote-controlled manual valve, and the operating filament 6 is a wire rope. 3. The water intake amount control device according to claim 1, wherein the on-off valve 5 is a remotely operated power valve, and the operating wire 6 is a power cable.