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Method for designing movable and immovable sheets of variable spray head

A design method and technology of spray heads, applied in the direction of spray devices, spray devices, etc. with movable outlets

Inactive Publication Date: 2010-06-02
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The fundamental difference from the patent 200610104497.7 is that the design method described is a method for determining the hydraulic dimensions of a new dynamic and static vane formed according to the change of the theoretical cross-sectional area. In the published patent, there is no research on the design method of the static and dynamic vanes of variable sprinkler nozzles.

Method used

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  • Method for designing movable and immovable sheets of variable spray head
  • Method for designing movable and immovable sheets of variable spray head
  • Method for designing movable and immovable sheets of variable spray head

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Embodiment Construction

[0020] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific examples completed by the inventor.

[0021] The present invention is a design method for the dynamic and static slices of the variable-variable sprinkler nozzle. Taking the 30PXH type nozzle to realize the triangular spray domain as an example, the steps of the method include:

[0022] Step 1: Determine the model of the nozzle

[0023] The inlet diameter of the nozzle depends on the model of the nozzle, then D=30mm.

[0024] Step 2: Determine the outer circle size of the static and dynamic film at the nozzle inlet

[0025] The size of the press fit between the moving piece and the hollow shaft is taken as the diameter of the outer circle of the moving piece D 1 = 39mm.

[0026] The static piece is fixed on the thread size of the lower swivel body, and the diameter of the outer circle of the static piece is D 2 = 30mm.

[0027] Step 3: Determin...

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Abstract

The invention discloses a method for designing movable and immovable sheets of a variable spray head, and belongs to a method for designing key equipment in a water-saving irrigation and spray irrigation system. The method specifically comprises the following steps: determining the diameter of a spray head inlet and the external circle size of the movable and immovable sheets of the spray head inlet under the condition of determining the type of the spray head; acquiring a maximum sectional area at a nozzle according to the spray shape; acquiring range, flow and pressure according to a theoretical formula, and determining the variation law of the sectional area of the inlet; and drawing structures of the movable and immovable sheets for the results by adopting an inscribed circle method to acquire structural drawings of the movable and immovable sheets. The designing method is suitable for designing the shapes of other regular spraying domains at the same time, and has a simple structure and good spraying effect.

Description

technical field [0001] The invention belongs to a design method of key equipment in a water-saving irrigation sprinkler irrigation system, in particular to a design method of dynamic and static slices of a variable-variable sprinkler nozzle. Background technique [0002] The 21st century will be an era of rapid social and economic development in my country, and an era of unprecedentedly sharp contradictions between supply and demand of water resources. Vigorously developing water-saving irrigation is the fundamental way to solve the shortage of agricultural water in our country. The sprinkler head is the key equipment that affects the quality of sprinkler irrigation. The traditional nozzles are mainly full-circle sprinkler rocker nozzles, which are widely used due to their stable performance and wide application range. However, when the sprinklers are used in a single or single-row configuration, the spraying perimeter and the spraying plot are often not matched, resulting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B05B3/02B05B15/04
Inventor 袁寿其刘俊萍李红汤跃朱兴业向清江
Owner JIANGSU UNIV
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