JPH0420206Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a device that automatically adjusts water management before and after planting seedlings in paddy fields.

(b) Conventional technology Conventionally, water management at the initial stage of paddy field work and after seedling planting was entirely dependent on the manual opening and closing of water receiving valves.

(c) Problems that the invention aims to solve When the required amount of water has been distributed from the irrigation water to the paddy fields, whether it is a rainy day, a windy day, or a sunny day, the water supply is stopped. However, each time a person had to go to the site and close the water receiving valve.

(d) Means for Solving the Problems In order to solve the problems, an embodiment in which the present invention is implemented as an automatic water shutoff device will be described below based on the drawings.

The operation arm connects the water receiving pipe 1 penetrating through the lower part of the water receiving tank 3 to an existing pipe provided in the water conduit, supports it with an arm support pole 12, and extends from the upper part of the water receiving tank 3 to the upper part of the adjustment water tank 6. 8, and both ends of the shaft 22 which is pivotally attached to the ratchet gear 9 connected to the locking pawl 7 that is attached to the arm penetrate both walls of the tank, and a hoisting wire is inserted into the center line groove on the surface of the ratchet gear. One end of 10 was fixed. Next, the butterfly valve 11 is attached with a hinge 23 so as to engage the water inlet 20 of the water distribution pipe 2 penetrating the water receiving tank 3, and the other end of the hoisting wire 10 is passed through the small hole of the center support plate 17, and then the butterfly valve 11 is attached. It stuck to the tip of No. 11. A pole free passage pipe 15 is loosely inserted into the concave notch of the operating arm 8 located at the upper center of the adjustment water tank 6, and a float adjustment screw 14 and an arm push-up plate 16 are attached above and below it. The pole free passage pipe 15 is made to pass freely through the center support plate 17', and the float 4 is suspended from the lower end of the float adjustment pole 13.

In addition, a part of the lower circumferential wall of the adjustment water tank 6 is cut out to serve as an inlet port 24 for paddy water, and both ends of the shaft 22 are passed loosely through the main body of the water tank 3, and one end is used as a hoisting handle 18 to open the water tank. A common stabilizing plate 19 is attached to the bottom of both the water tanks 3 and 6, and finally, the water receiving pipes 1 and 6 protruding from the outside of both water tanks 3 and 6 are installed to protect the device from rain, wind, dust, and other obstacles. The entire device except for a portion of the water distribution pipe 2 was covered with a transparent to opaque solid cover.

(E) Action Turn the hoisting handle 18 to wind the hoisting wire 10 into the center line groove on the ratchet gear surface.
When the butterfly valve 11 is raised using the hinged part as a fulcrum and the valve attached to the existing pipe connected to the water receiving pipe 1 is opened, water flows from the existing pipe through the water receiving pipe 1 and into the water receiving tank 3. The water is distributed from the water supply port 20 to the water distribution pipe 2 and from the water distribution port 21 to the rice fields. Eventually, when the scheduled amount of water distribution to the paddy fields is nearing completion, the distributed paddy water enters from the paddy water inlet 24 of the adjustment tank 6 and begins to float the float 4, and the inflow of paddy water gradually increases and the planned distribution is completed. When the float floats up to the water level line, the arm push-up plate 16 pushes up the concave notch of the operating arm 8. Therefore, the locking pawl 7 comes off from the ratchet gear 9, and the butterfly valve 11
The hoisting wire 10, which was wound around the center line groove on the ratchet gear surface, rapidly unravels under its own weight and falls down using the hinge as a fulcrum, eventually blocking the water inlet 20 and cutting off water distribution to the rice fields. Resulting in. Incidentally, waves of paddy water are prevented by a wave adjustment plate 5.

(f) Effects of the invention This invention can be easily connected to the water supply pipe installed in the existing water conduit, and when water is needed, the water supply valve is opened and water is automatically distributed when the planned amount of water has been distributed to the rice fields. Since the water in the paddy field is stopped, there is no need to drain the rice field overflowing, which eliminates the need for water, and reduces operating labor by half.

Moreover, since the structure is simple, no operating experience is required and it can be provided at low cost.

[Brief explanation of drawings]

FIG. 1 is a partially sectional perspective view of the device of the present invention seen from the side. FIG. 2 is a partially sectional perspective view of the device of the present invention seen from the front. 1...Water receiving pipe, 2...Water distribution pipe, 3...
Water tank, 4...Float, 5...Wave adjustment plate, 6
... Adjustment water tank, 7 ... Locking claw, 8 ... Operation arm, 9 ... Ratchet gear, 10 ... Hoisting wire, 11 ... Butterfly valve, 12 ... Arm support pole, 13 ... Float adjustment pole , 14...
Float adjustment screw, 15... Pole free tube, 16
...Arm push-up plate, 17, 17'...Center support plate, 18...Hoisting handle, 19...Stabilizing plate,
20... Water inlet, 21... Water distribution port, 22... Shaft, 23... Hinge, 24... Paddy water inlet.

Claims (1)

[Scope of utility model registration request] The lower part has a water receiving pipe 1, the water distribution pipe 2, and the butterfly valve 11. The upper part has an operating arm 8 with a locking pawl 7 engaged thereon, and a ratchet gear 9 linked thereto. A hoisting wire 10 is fixed to a butterfly valve 11 hinged to the upper part of the inlet slope of an inlet 20 with one end fixed and the other end penetrated below the water tank 3, and the upper horizontal center position of the water tank 3. A hoisting handle 18 is provided on the outside of the shaft 22 of the ratchet gear 9, which is rotatably mounted on the shaft 22, passing loosely through the wall of the water tank 3, and a locking claw 7 is provided on the lower surface, and one end is attached to the arm support pole 12. Operation arm 8 is attached so that it can be rotated up and down, and the other end is a concave free end.
At the bottom, there is a float 4 with a vertical float adjustment pole 13 attached, a paddy water inlet 24, and a wave adjustment plate 5. At the top, there is a center support plate 17' attached horizontally, and a float adjustment plate. It is loosely fitted into the pole 13 and has a float adjustment screw 14 above and an arm push-up plate 16 below, and the middle thereof is loosely sandwiched between the concave portion of the operating arm 8 which is horizontally installed by its own weight from the water receiving tank 3 side. An automatic irrigation water shutoff device in which a regulating water tank 6 constituted by a pole floating pipe 15 and the like and the water receiving tank 3 are installed and fixed on a stabilizing plate 19 adjacent to the regulating water tank 6.