Control method of dynamic water-pressure drip-irrigation system

Abstract

The invention discloses a dynamic hydraulic pressure drip irrigation system, characterized in that, an inlet of a water pump is connected with a caml water source through a pipe, a pressure water source and a reservoir enter a trunk after being connected with an outlet of the water pump; a switch solenoid valve, a check valve, an irrigation main switch and a main filter are arranged in turn on the trunk, a solenoid valve is connected in parallel with the switch solenoid valve through a branch pipe, a fertilization switch and a fertilizer placer are connected with the irrigation main switch inparallel through the branch pipe, a fertilizer controlling valve and a fertilizer pot are connected in turn under the fertilizer placer; a pressure gauge, main filter, a filter flushing valve and a water gauge are arranged on the trunk; a douche is arranged on bottoms of different branches of the branch pipe; each valve is connected with a controller through control lines, a frequency converter is connected between the water pump and the controller. The system causes operation water pressure to change antomatically and dynamically, keeps a larger working water pressure, meanwhile, reduces practical working pressure of the drip irrigation system, also reduces operation cost of the micro irrigation system.

Description

technical field [0001] The invention belongs to the intersection field of farmland water conservancy and machinery manufacturing, and in particular relates to a control method of a novel water-saving irrigation system. Background technique [0002] Drip irrigation transports water and fertilizers to the root zone of crops through the pipe network. It has the most significant effects of water saving, production increase, high efficiency and environmental protection. It can be applied to irrigation in fields, greenhouses, greenhouses and ecological gardens. Worldwide, drip irrigation has been adopted by more than 100 countries, but the one-time investment of about 2,000 yuan per mu seriously hinders the large-scale application of this technology, which currently only accounts for 1.52% of the irrigated area. In recent years, my country's micro-irrigation enterprises have realized the localization of micro-irrigation products through independent innovation, especially the inven...

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Problems solved by technology

[0004] Existing drip irrigation systems generally use a water head of 10 meters as a fixed working water pressure. In recent years, some studies have reduced the working water pressure to reduce the one-time investment and operation cost of the drip irrigation system, but the working water pressure is still a fixed value.

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