Uniform-sprinkling-irrigation 2000-stage adjustable spray nozzle of center pivot sprinkling machine and adjustment method

Abstract

The invention relates to a uniform-sprinkling-irrigation 2000-stage adjustable spray nozzle of a center pivot sprinkling machine and an adjustment method. The spray nozzle comprises a spray nozzle bottom cover and a plurality of universal spray nozzle bodies. The two ends of each universal spray nozzle body are each provided with threads. The threads at the two ends of each universal spray nozzle body are matched. The universal spray nozzle bodies are connected with one another through the threads. The spray nozzle bottom cover is connected with the universal spray nozzle body at the lowest end through threads. The universal spray nozzle body at the uppermost end is connected with a cantilever at the lower end of a truss through threads. Spray holes are evenly distributed in the middle of each universal spray nozzle body. The standard spray hole radius of each spray hole is 0.5 mm. According to the different numbers of the spray holes, the spray nozzle bodies are divided into 12 types of spray nozzle bodies, namely, the first spray nozzle body, the second spray nozzle body, the third spray nozzle body, the fourth spray nozzle body, the fifth spray nozzle body, the sixth spray nozzle body, the seventh spray nozzle body, the eighth spray nozzle body, the ninth spray nozzle body, the tenth spray nozzle body, the eleventh spray nozzle body and the twelfth spray nozzle body, and the numbers of the corresponding spray holes in the 12 types of spray nozzles bodies are sequentially 1, 2, 4, 8, 10, 20, 40, 80, 100, 200, 400 and 800 respectively.

Description

technical field [0001] The invention relates to irrigation technology, in particular to a 2000-level adjustable nozzle for uniform irrigation of a circular sprinkler irrigation machine and a configuration method. Background technique [0002] The circular sprinkler irrigation machine has high degree of automation, good irrigation quality, and a large single-machine control area. Especially, the circular sprinkler irrigation machine has strong adaptability to terrain and low requirements for water sources, so it has been widely promoted and applied. [0003] Equidistant nozzles are configured with circular sprinkler irrigation machines. In order to achieve the required irrigation depth and meet the requirements of irrigation uniformity, the sprinkler configuration structure with the irrigation depth per unit time as the initial parameter must meet certain requirements, such as main diameter, inlet pressure, and nozzle configuration. Spacing, etc. When these parameters change,...

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Problems solved by technology

Yixiutang et al. proposed a mathematical model and related software for the configuration of circular sprinkler irrigation machines when the nozzles are arranged at equal intervals. Using this software, input the corresponding initial parameters, and quickly output the optimal sprinkler configuration scheme for the central pivot type sprinkler irrigation machine. Then according to this configuration scheme, a series of special nozzles dedicated to this initial parameter will be produced. The disadvantage is that under the condition of the initial parameter change, the diameter of the remaining nozzle will also change accordingly, and it is necessary to re-produce the special nozzle according to the new configuration scheme. The special nozzle series under the initial parameters after the change has caused some inconvenience to the actual application, and there is no uniform specification and size for mass production of the nozzle series

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