A Precise Control Mechanism of Lawn Sprinkler Lifting and Falling Point in Variable Area Sprinkler Irrigation System

Abstract

The invention relates to a lawn sprayer, in particular to a region variable lawn sprayer based on frequency control water supply, and the key part of the invention is the drop point accurate controlling mechanism which mainly realizes the function of drop point controlling and circumference locating controlling. The circumference locating is realized by connecting bayonets between a stop collar and a housing, as well as the housing and a T-junction. The controlling of the drop point is realized through a guiding piece mounted on the outer side of the sprayer and a positioning screw on the stop collar. The lawn sprayer drop point accurate controlling mechanism can realize accurate positioning of the drop point of the region variable lawn sprayer under open-loop controlling, the controlling unit is simplified, and arbitrary spraying region can be realized by different guiding grooves processed by the guiding piece. The region variable lawn sprayer drop point accurate controlling mechanism has the advantages of simple structure and reliable operation.

Description

technical field [0001] The invention relates to a lawn sprinkler head with precise control of landing point, in particular to the lawn sprinkler head used in frequency conversion and speed regulation water supply to realize variable area sprinkler irrigation system. Background technique [0002] The lawn sprinkler is widely used in landscaping irrigation and is a kind of efficient water-saving irrigation equipment. Since the spraying areas of the existing lawn sprinklers are all circular, in actual spraying, it is easy to cause situations such as not spraying at the corners, or spraying out of bounds, and high overlapping coefficients, resulting in waste of water resources. [0003] In order to solve these problems, many researchers have carried out variable domain spraying research on nozzles. Chinese Patent No. CN2719409Y discloses a "buried variable-range fully automatic water-saving sprinkler irrigation nozzle". This patent designs an adjustment disc with uneven surface...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the shortcoming that the landing point of the lawn sprinkler in the variable domain sprinkler irrigation system cannot be accurately positioned under the open-loop control strategy, and provide a reliable and stable lifting point precise control mechanism for the lawn sprinkler, so that the sprinkler can be controlled at the same time. After one spraying, it can accurately land on a certain position, and it can start from a certain position when spraying again, so that the open-loop controller can control the frequency converter according to the time-frequency law of the certain spraying area, so that the lawn sprinkler becomes Field spraying can be practically applied

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