Backwash-type fountain root-irrigation irrigator

Abstract

The invention discloses a backwash-type fountain root-irrigation irrigator, which is formed by combining a cover with a core of the irrigator through a thread, wherein the center above the cover is provided with a water inlet; ventilation water guide holes are distributed around the cover; the core of the irrigator is a hollow circular tube with a partition plate; helical tooth labyrinth channels are distributed on the outer wall of the circular tube; the helical tooth labyrinth channels are provided with a filter screen and a water outlet; the partition plate is arranged between the filter screen and the water outlet; and the upper end and the lower end of the circular tube are provided with external threads matched with the cover. Under the normal condition, the cover is in driving fit with the thread of the upper end of the core of the irrigator; water flow enters the interior of the core from the water inlet, enters the helical tooth labyrinth channels after being filtered through the filter screen for energy dissipation, and outflows from the core through the water outlet. When the irrigator is blocked, the core of the irrigator is inverted, and the cover is screwed down with the thread of the lower end of the irrigator, thus, the water flow inflows from the water outlet to wash out the channels, and outflows from the filter screen to perform a backwash function.

Description

technical field [0001] The invention belongs to the technical field of agricultural economic forest irrigation in arid areas, and relates to a root irrigation waterer for springs, in particular to a backwashing waterer for root irrigation with springs. Background technique [0002] While vigorously developing modern water-saving irrigation, it is generally recognized that underground irrigation (such as subsurface infiltration irrigation and drip irrigation) is the most water-saving technology, but the blockage of emitters has always been the biggest bottleneck hindering the application and development of drip irrigation technology. According to the cause of clogging, there are physical clogging caused by solid particles, chemical clogging caused by insoluble salts generated by chemical reactions, and biological clogging caused by microbial activity and growth. Studies have shown that the direct cause of emitter clogging is the migration law and deposition characteristics of...

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