JP3053481U - Water diversion valve for intake of paddy field - Google Patents

Abstract

(57) [Abstract] [Problem] To prevent garbage from accumulating in a diversion valve for flowing water from a water channel to a water intake of a paddy field. SOLUTION: A substrate 1 fixed to a wall 3 of a water channel 2 by providing a water inlet 5 opening to a water intake 4 of a paddy field, a hollow portion 7 opening a downstream end of the water channel 2 and a shutter surface 8 are provided. From the state in which the hollow portion 7 is open to the entire water inlet 5 to the state in which the shutter surface 8 blocks a part of the water inlet 5, and the state in which the shutter surface 8 blocks the entire water inlet 5. The substrate 1 must be capable of being continuously displaced and displaced in the opposite direction.
And a cover 6 which is slidably assembled with the cover 6 to form a water distribution valve.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a diversion valve that regulates the amount of water flowing from a water channel to a water intake of a paddy field.

[0002]

[Prior art]

 FIG. 6 shows an example of a conventional water diversion valve. In this water diversion valve, a substrate 21 having an inlet 20 is fixed to a wall of a water channel so that the inlet 20 opens to an intake, and a shutter plate 22 is swung like a pendulum with respect to the base 21. By freely mounting and changing the swing angle of the shutter plate 22, the water inlet 20 is fully opened, partially opened, or completely closed, so that the water flows from the water inlet 20 to the water intake. It is designed to regulate the amount of water to be consumed.

[0003] In recent years, various trash such as styrofoam, paper, tree branches, tobacco, pet bottles, dead grass, cardboard, clothing, and the like have flown in waterways. Then, there is a problem that such garbage accumulates in the diversion valve as in the above-mentioned conventional example, and blocks the intake opening.

[0004]

[Problems to be solved by the invention]

 Therefore, the problem of the present invention is to provide a water diversion valve that can prevent intrusion of dust into the intake of the paddy field.

[0005]

[Means for Solving the Problems]

 In order to solve the above-mentioned problem, the water diversion valve for the intake of the paddy field of the present invention is provided with a substrate 1 fixed to the wall 3 of the water channel 2 by providing an intake port 5 opening to the water intake 4 of the paddy field, and a water channel 2. From a state in which the hollow part 7 is open to the whole water inlet 5 with the hollow part 7 having an open end on the downstream side and a state in which the shutter part 8 partially closes the water inlet 5. And a cover 6 slidably mounted on the substrate 1 so that the shutter surface 8 can be continuously displaced to a state in which the entirety of the water inlet 5 is closed and displaceable in the opposite direction. The configuration is adopted.

In the water diversion valve for paddy field of the present invention, a pair of raised portions 14 and 15 are provided on the surface of the cover 6 from the upstream side to the downstream side of the water channel 2 in addition to the above configuration. It is preferable to add a configuration in which the width of the valley portion 16 formed between the raised portions 14 and 15 is gradually narrowed from the upstream side to the downstream side of the water channel 2.

[0007]

【Example】

 Hereinafter, the embodiment of the present invention shown in FIGS. 1 to 5 will be described. First, in the figure, reference numeral 1 denotes a substrate, and the substrate 1 is fixed to a wall 3 of a water channel 2. The substrate 1 is provided with a water inlet 4 that opens to a water intake 4 for a paddy drilled in a wall 3 of a water channel 2.

A cover 6 is slidably mounted on the surface of the substrate 1 from the upstream side to the downstream side of the water channel 2 or, conversely, from the downstream side to the upstream side. The cover 6 has a hollow portion 7 that opens at the downstream end of the water channel 2 at the downstream side on the inner surface side, and a shutter surface 8 that can adhere to the substrate 1 at the upstream side on the inner surface side. I have.

When the cover 6 is moved to the upstream side of the water channel 2, the hollow portion 7 of the cover 6 and the water inlet 5 of the substrate 1 are opened as shown in FIG. In this state, water that has entered the hollow portion 7 from the opening 9 at the downstream end of the cover 6 passes through the water inlet 5 and the water intake 4 and is supplied to the paddy field.

Next, when the cover 6 is moved to the downstream side of the water channel 2, as shown in FIG. 4, the shutter surface 8 of the cover 6 closes the water inlet 5 of the substrate 1, and the water flows into the water inlet 4. This will stop the inflow.

It is also possible to stop the cover 6 at a position where the shutter surface 8 blocks a part of the water inlet 5, for example, at an intermediate position between the position in FIG. 2 and the position in FIG. By adjusting the position of 6, the amount of water flowing into the water inlet 5 can be changed.

As shown in FIG. 1, the cover 6 has guide holes 10 and 11 provided at both upper and lower ends from the upstream side of the water channel 2 to the downstream side, respectively. 12 and 13 penetrate those guide holes 10 and 11. By tightening the screws 12, 13, the cover 6 can be fixed to the substrate 1 at an appropriate position.

The dust that flows from the upstream to the downstream of the water channel 2 flows backward and hardly enters the hollow portion 7 from the opening 9 of the cover 6, so that the dust does not accumulate in the water intake 4. However, as shown in FIG. 5, the water flowing along the surface of the cover 6 may generate a vortex that turns inwardly of the cover 6 when the water passes over the downstream edge of the cover 6. In addition, there is a possibility that dust trapped in the vortex may enter the hollow portion 7 of the cover 6. In order to solve this problem, as shown in FIGS. 1 to 4, a pair of raised portions 14 and 15 are provided on the surface of the cover 6 from the upstream side to the downstream side of the water channel 2, and The width of the valley 16 formed between the ridges 14 and 15 is gradually reduced from the upstream side to the downstream side of the waterway 2. As a result, when the water flowing along the surface of the cover 6 passes through the valley 16, the width of the valley 16 becomes narrower toward the downstream side, so that the velocity increases. Even when it crosses the downstream edge, it goes straight to the downstream side and does not generate vortices. Therefore, there is no fear that dust is caught in the vortex and enters the hollow portion 7 of the cover 6.

[0014]

[Effect of the invention]

 The water diversion valve for the intake of the paddy field of the present invention is as described above, and the cover 6 has the effect of preventing dust from entering the intake 4. Further, by providing the raised portions 14 and 15 on the surface of the cover 6 as described in claim 2, the generation of vortices can be prevented, so that the effect of preventing dust from entering the water intake 4 can be enhanced.

[Brief description of the drawings]

FIG. 1 is a front view.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a cross-sectional view showing a state in which a cover is moved to cover a water inlet of a substrate with a shutter surface.

FIG. 5 is a cross-sectional view showing how water flows when there is no protrusion on the surface of the cover.

FIG. 6 is a front view of a conventional side.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Substrate 2 Waterway 3 Wall 4 Inlet 5 Inlet 6 Cover 7 Hollow part 8 Shutter surface 9 Opening 10 Guide hole 11 Guide hole 12 Screw 13 Screw 14 Raised part 15 Raised part 16 Valley part 20 Water inlet 21 Substrate 22 Shutter plate

Claims (2)

[Utility model registration claims] 1. A substrate 1 fixed to a wall 3 of a water channel 2 by providing a water inlet 5 opening to a water intake 4 of a paddy field; a hollow portion 7 having an opening at a downstream end of the water channel 2; From the state in which the hollow portion 7 is open to the entire water inlet 5 to the state in which the shutter surface 8 blocks a part of the water inlet 5, and the state in which the shutter surface 8 blocks the entire water inlet 5. So that the substrate 1 can be continuously displaced and also displaced in the opposite direction.
And a cover 6 slidably attached to the water intake valve for a paddy field. 2. A pair of raised portions 14, 15 extending from the upstream side to the downstream side of the water channel 2 is provided on the surface of the cover 6, and the width of a valley portion 16 formed between the raised portions 14, 15 is set to be upstream of the water channel 2. 2. The water diversion valve for an intake of a paddy field according to claim 1, wherein the water diversion valve is gradually narrowed from a side toward a downstream side.