JP3009300U - Underdrain drainage gate - Google Patents

Abstract

(57) [Summary] [Objective] The present invention provides a sluice gate for underdrain water distribution in a paddy field, in which the transition can be adjusted in a still state. [Construction] The underdrain distribution water gate a of the present invention opens and closes a communication port 4 between an inflow port 2 and a water flow port 3 of a plug 1, and positions an outer cylinder 7 standing on the plug 1 at the upper part. A valve body 16 having a water shut-off pipe 11 that can freely move up and down is provided with a diamond-shaped concave portion 20 and a convex portion 21 alternately on a bullet-shaped outer peripheral rubber surface except for a seal portion 17 on an upper circumferential surface. In the underdrain water distribution gate that is provided, the communication groove 22 having a required width is cut off from the surface of the upper concavo-convex layer of the valve body 16 to the seal portion 17, and an empty space inside the valve body is provided below the plane of symmetry with the communication groove 22. A water hole 24 communicating with the chamber 23 is provided through the water level adjusting hole 13 at a required pitch in the axial direction of the circumferential surface of the water shutoff pipe 11 communicating with the empty chamber 23, and the water level adjusting hole 13 can be freely selected. The water level adjusting cover 14 that opens and closes is externally fitted to the water shutoff pipe 11.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a culvert drainage sluice gate in a paddy field that can control the water level in a still state.

[0002]

[Prior art]

 In an underdrain drainage gate, in which a conventional valve body has a bullet-shaped rubber surface on the outer peripheral surface except for the seal part on the upper circumferential surface, a drainage sluice gate is provided with a drainage amount depending on the degree of elevation of the valve body itself. The water level could not be adjusted when the water was stopped.

[0003]

[Problems to be solved by the device]

 The present invention provides a culvert drainage sluice where the water level can be adjusted when the valve body is in a water-stopped state.

[0004]

[Means for Solving the Problems]

 The culvert drainage sluice of the present invention opens and closes the communication port between the inlet and outlet of the plug, and at the top of the gate, the water pipe is installed to vertically move the inside of the outer cylinder erected on the plug. The valve body has a rubber surface on the outer periphery of the bullet shape, except for the sealing part on the upper circumferential surface. A communication groove having a required width is provided across the portion, and a water passage hole communicating with the empty chamber inside the valve body is provided below the plane of symmetry with the communication groove, and the peripheral surface of the water shutoff pipe communicating with the empty chamber. The water level adjusting holes are provided so as to extend axially at a required pitch, and a water level adjusting cover that selectively opens and closes the water level adjusting holes is externally fitted to the water shutoff pipe.

[0005]

[Action]

 In the state shown in Fig. 1, water above the control water level accumulated in the rice field enters the outer cylinder through the communication groove cut out in the valve body, flows into the water level control hole, flows down the water shutoff pipe, and vacates the valve body. It is further drained from the outlet through the water passage hole. Further, the water level adjusting cover is fitted onto the water shut-off pipe and moves up and down to open a predetermined water level adjusting hole and close the water level adjusting hole below a desired water level.

[0006]

【Example】

 The underwater drainage sluice a of the present invention (hereinafter, simply referred to as a sluice a) will be described with reference to an embodiment. As shown in FIG. 1, a communication port 4 between an inflow port 2 and an outflow port 3 of a plug 1 is provided. A peripheral wall 5 is erected on the upper part of the peripheral wall 5, a sliding hole 6 is formed through the inner peripheral bottom surface of the peripheral wall 5 to communicate with the communication port 4, and an outer cylinder 7 of a required height is fitted on the inner peripheral surface. A lid 8 detachably screwed onto the upper end of the outer cylinder 7 has an insertion portion 9 standing upright on the upper surface thereof, and a slit is formed vertically from the upper end of the insertion portion 9 so that a screw threaded on the outer periphery can be attached to a nut. 10 is screwed to freely tighten the above-mentioned split groove, and the water stop pipe 11 guided by the insertion portion 9 and inserted is joined with the handle 12 at the upper end, and the intermediate portion is required to move up and down around the standard water level position. The water level adjusting holes 13 are provided at required pitches, and the water level adjusting cover 14 is watertightly fitted on the outer periphery so that the water level adjusting cover 14 can be positioned freely. A stopper 15 which serves as an upper positioning end of the water level adjusting cover 14 is externally fitted and fixed above the required water level adjusting hole 13 by a required dimension, and a valve body 16 having a bullet-like outer shape is integrally hung at the lower end to stop water. Occasionally, the seal portion 17 on the upper circumferential surface of the valve body 16 is watertightly fitted in the sliding hole 6, and the communication port 4 is provided between the inflow port 2 and the outflow port 3 so as to pass a required amount of water. To open it, loosen the nut 10 and hold the handle 12 to pull up the water shutoff pipe 11 as required, and then tighten the nut 10 again to narrow the split groove of the insertion portion 9 and reduce the diameter of the water shutoff pipe 11. Is fixed at the required pull-up position to maintain the required drainage volume.

Further, as shown in FIG. 2, the valve body 16 has a rubber-like core body 18 having an outer shape fitted with a rubber-like water stop body 19 having the same outer shape, and the surface of the water stop body 19 has an upper circumference. As shown in FIG. 3 except for the sealing portion 17 on the surface, diamond-shaped concave portions 20 and convex portions 21 are formed mutually, and the portion extending from the surface of the upper uneven layer on the inlet 2 side to the sealing portion 17 is shown in FIG. As described above, the communication groove 22 having a required width is formed by cutting out, and the water stop hole 19 that communicates with the empty chamber 23 inside the core body 18 is penetrated through the water stop body 19 at the lower side of the plane of symmetry with the communication groove 22 (on the outlet 3 side). The water level adjusting hole 13 of the water shutoff pipe 11 and the water passage hole 24 communicate with each other through the empty chamber 23.

In the water gate a thus constructed, when the water is stopped, as shown in FIG. 1, the valve body 16 is watertightly fitted into the sliding hole 6 in the seal portion 17, and the inner circumference of the communication port 4 is The hydro-sand which is pressed against the surface and adheres to the inner peripheral surface is pushed into the concave portion 20, the convex portion 21 of the valve body 16 comes into close contact with the inner peripheral surface, and the water from the communicating groove 22 is kept in Water above the water level overflows from the water level adjusting hole 13 which is opened to be maintained at a predetermined water level by the water level adjusting cover 14, and is discharged to the outlet 3 through the water hole 24 through the empty chamber 23. When water is passed, the nut 10 is loosened, the handle 12 is used to pull up the water shutoff pipe 11 as required, and the nut 10 is tightened to position the valve body 16 by opening the communication port 4 as required. The amount of drainage is secured.

[0009]

[Effect of device]

 As described above, according to the underdrain drainage gate of the present invention, in addition to normal drainage with a simple structure, there is an effect that a desired water level can be secured in a water-stop state to drain unnecessary water.

[Brief description of drawings]

FIG. 1 is an explanatory view of an underdrain drainage gate a according to the present invention.

FIG. 2 is a partial vertical cross-sectional view in which a quarter of a valve body is cut away.

FIG. 3 is an enlarged partial sectional view taken along the line AA of FIG.

FIG. 4 is a view on arrow P of FIG.

[Explanation of symbols]

 1 Plug 2 Inlet 3 Outlet 4 Communication Port 5 Circumferential Wall 6 Sliding Hole 7 Outer Cylinder 8 Lid 9 Insertion Part 10 Nut 11 Water Stopper 12 Handle 13 Water Level Adjusting Hole 14 Water Level Adjustment Cover 15 Stopper 16 Valve Body 17 Sealing Part 18 Core body 19 Water stop body 20 Recessed portion 21 Convex portion 22 Communication groove 23 Vacancy 24 Water passage hole a Underwater drainage gate

Claims (1)

[Scope of utility model registration request] 1. A valve body in which a communication port between an inflow port and an outflow port of the stopper is opened and closed, and a water shut-off pipe is vertically installed at an upper portion of the outer cylinder, which is erected on the stopper so as to be vertically movable. However, in the underwater drainage sluice, the rubber surface of the bullet-shaped outer periphery is formed as a diamond-shaped uneven layer, except for the sealing portion of the upper circumferential surface,
A communication groove having a required width is cut out from the surface of the upper concavo-convex layer of the valve body to the seal portion, and a water passage communicating with a cavity inside the valve body is formed below the plane of symmetry with the communication groove. For underground drainage, which is formed by penetrating water level adjusting holes in the axial direction of the circumferential surface of the water shutoff pipe communicating with the chamber at a required pitch and by fitting a water level adjusting cover that selectively opens and closes the water level adjusting hole onto the water shutoff pipe. Sluice.