Return water control device for multifunctional irrigation system

Abstract

The present invention relates to a return water control device for a multifunctional irrigation system. A technical scheme is that a pipeline of a water inlet of a submersible pump is provided with awater inlet converter in a coaxial connection, a water feeding gate and a return water inlet which communicate internally and externally are respectively arranged in a side wall of the water inlet converter, the water feeding gate is provided with a gate valve, the return water inlet is connected with a return water pipeline, the return water pipeline is provided with a return water valve and a water discharge pipeline is provided with a water discharge valve. By arranging the water inlet converter in the pipeline of the water inlet of the submersible pump, a return water circulation is formed, during a return water process, the water inlet converter extends into a bottom part of a well, so that a larger height difference is generated between the water inlet converter and lifting column base seats to provide a sufficient water pressure difference for return water, each stage of a circular hollow pipe of each lifting column can be completely recovered under negative pressure, and a problem that the lifting columns of a multifunctional irrigation system cannot be recovered after irrigation and extending in areas with relatively high water levels is solved.

Description

technical field [0001] The invention relates to a return water control device for a multifunctional irrigation system. Background technique [0002] Agriculture is an important basic industry in our country. The traditional method of irrigation and fertilization is manual, which is time-consuming and labor-intensive, and the efficiency is low. Using advanced facilities and technologies, it is the most important thing for our country to shift from "depending on the sky" to large-scale automated production. In the direction of agricultural development, there are many irrigation and fertilization equipments on the market. However, due to their structural problems, the cost of the equipment is high and the functions are few. It is very inconvenient and the effect is unsatisfactory. Therefore, the applicant's application number is: 201520209803.8 "a lifting column for multi-functional irrigation and fertilization system", wherein the structure of the spraying mechanism is compose...

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Problems solved by technology

[0003] In view of the above situation, in order to overcome the defects of the prior art, the object of the present invention is to provide a return water control device for a multi-functional irrigation system, which can effectively solve the negative pressure recovery of circular hollow tubes at all levels of the telescopic column of the multi-functional irrigation system. Insufficient, problems that cannot be fully recovered

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