Full-geographical lift type farmland pipeline irrigation multifunctional hydrant

Abstract

The invention discloses a full-geographical lift type farmland pipeline irrigation multifunctional hydrant which mainly comprises an upper hydrant and a lower hydrant. The full-geographical lift type farmland pipeline irrigation multifunctional hydrant is characterized in that the hydrant is of a semi-fixed split type combination structure, and the lower hydrant is arranged below a ground cultivated layer and is connected with a pipeline tee to form a fixing device for supplying water to farmlands; the lower hydrant is in a piston type ascending and descending mode; the upper hydrant is matched with the lower hydrant, crossed support ribs and a starting drive nut are arranged at the bottom of the upper hydrant, so that a special tool for downwardly pushing a floating body and starting the lower hydrant is formed; a slide rail is arranged on the inner side of an outer shell, and a stop valve of the floating body is mounted on the slide rail of the outer shell. The full-geographical lift type farmland pipeline irrigation multifunctional hydrant has the advantages that the lower hydrant is completely buried under the ground cultivated layer, so that the difficult problem of influence of an existing hydrant on cultivation of agricultural machinery can be thoroughly solved; multiple functions such as automatic ascending, automatic closing, air inlet and exhaust and water consumption metering are integrated in the hydrant; the full-geographical lift type farmland pipeline irrigation multifunctional hydrant is simple in structure, components of the hydrant can be combined with one another and can be mounted conveniently and quickly, and the various functions can be realized stably.

Description

technical field [0001] The invention belongs to the technical field of agricultural irrigation technology. Background technique [0002] The background technology of the present invention mainly contains the following aspects: [0003] (1) Water supply plugs, commonly known as water outlets, are one of the most important auxiliary facilities in pipeline irrigation projects. At present, the national standards and industry standards for pipes, pipe fittings, pump valves, electromechanical equipment and other products used in pipeline irrigation projects have been very standardized, and there are many manufacturers. , the choice is large, and the market is very mature; only the water supply hydrant has no national standard or industry standard, there are very few professional manufacturers, product development is relatively lagging behind, market products are uneven, and there are many problems, which seriously restrict The benefits of pipeline irrigation projects are brought ...

AI Technical Summary

Problems solved by technology

[0004] One is the external pressure water stop, manual closing, often due to factors such as loose closing, excessive pressure, water hammer and other factors, causing loosening and water leakage. Before each irrigation, it is necessary to check whether it is closed one by one, which causes great inconvenience and difficulty to project management;

[0005] The second is the lateral water outlet, which can only be installed above the ground, which affects the cultivation of agricultural machinery, and it is more common to be damaged by agricultural machinery;

[0006] The third is that it is easy to prevent and control the opening of the wrench, and the phenomenon of random opening and opening is more serious, and it is impossible to irrigate in an orderly manner according to the wheel irrigation system;

[0007] Fourth, the function is single, which can only be opened and closed manually, and cannot be automatically closed, and comprehensive functions such as water metering, air intake and drainage, and protection of pipelines;

[0008] Fifth, there are no metering facilities, so it is impossible to realize water metering to households, and it is impossible to realize household charging according to the volume;

[0009] Sixth, most of the protection devices are on-site masonry, which is labor-intensive and time-consuming, and occupies farmland

[0012] 2. The automatic closing function relies on the water splitter on the edge of the hemispherical water stop valve plate, which drives the valve plate to rotate counterclockwise under the action of the water flow to realize the automatic closing function; when the water pressure is relatively small (generally less than 0.01mpa), due to the thrust of the water flow Not enough, unable to drive the water stop valve plate to rotate counterclockwise, unable to realize automatic closing function

[0013] 3. The hydrofoil around the edge of the hemispherical water stop valve plate and the concave structure at the bottom of the hemispherical valve plate cause poor water flow conditions during normal operation, large head loss, and vibration of the plug body due to negative pressure during production.

[0014] 4. Since the intake and exhaust valves are placed in the ball cavity on the lower side of the top of the hemispherical water stop valve plate, due to space constraints, the exhaust holes are small, the exhaust volume is insufficient, and the gas in the pipeline is not discharged smoothly, so that there is still water in the normal water outlet operation. A small amount of gas and water are discharged at the same time, which will cause the plug body to vibrate, and the air intake effect is relatively poor when the system is closed

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