Pressure self-controlled irrigation and pesticide application sprinkler for micro-irrigation system

Patent metadata

Field	Value
Publication number	US-12219953-B2
Application number	US-202218574303-A
Country	US
Kind code	B2
Filing date	Jan 7, 2022
Priority date	Nov 23, 2021
Publication date	Feb 11, 2025
Grant date	Feb 11, 2025

Abstract

A pressure self-controlled irrigation and pesticide application sprinkler for a micro-irrigation system, the sprinkler mainly including a sprinkler body, a sprinkler cap, a spring sleeve, flow guide holes, a spring washer, a mist spraying nozzle, a rotary acceleration chamber, a compressible spring, arc-shaped flow passages, a thread, a deflection surface, an engagement recess, flow guide slots, a connecting rod movable hole, and a connecting rod. The sprinkler is configured as a double-flow-passage structure. The sprinkler body is provided therein with the spring sleeve and the spring washer. Water flow pressure is controlled to push the spring washer to drive the spring sleeve to move vertically, thereby achieving the switching between two operating modes, i.e., irrigation and mist spraying.

First claim

What is claimed is:

1. A pressure self-controlled irrigation and pesticide application sprinkler for a micro-irrigation system, comprising a sprinkler body and a sprinkler cap, wherein an impact deflection surface is arranged at a joint between the sprinkler body and the sprinkler cap, a spring sleeve is mounted in an inner cavity of the sprinkler body, the spring sleeve is slidable on a surface of the inner cavity of the sprinkler body, a bottom of the spring sleeve is in communication with a water inlet of the sprinkler body, a plurality of arc-shaped flow passages are arranged on the sprinkler body, the arc-shaped flow passages are in communication with the inner cavity of the sprinkler body, a plurality of through holes are arranged on a side wall of the spring sleeve, a connecting rod is fixed inside the spring sleeve, a spring washer is arranged on the connecting rod, the spring washer is located at a water outlet of the sprinkler body, an upper end of the sprinkler cap is provided with a spraying nozzle, a cylindrical rotary acceleration chamber and a spring cavity are provided in the sprinkler cap, a connecting rod movable hole and a plurality of flow guide grooves are provided in the cylindrical rotary acceleration chamber, the connecting rod is slidably connected to the connecting rod movable hole, a compressible spring is arranged in the spring cavity, the compressible spring is nested on the connecting rod, and two ends of the compressible spring are positioned through the spring washer and a bottom end surface of the rotary acceleration chamber.

2. The pressure self-controlled irrigation and pesticide application sprinkler for the micro-irrigation system according to claim 1 , wherein a flow guide hole is arranged at an outlet of each of the arc-shaped flow passages.

3. The pressure self-controlled irrigation and pesticide application sprinkler for the micro-irrigation system according to claim 1 , wherein a central hole axis of each of the through holes is coplanar with a center line of each of the arc-shaped flow passages, and a diameter of each of the through holes is equal to a flow passage diameter of each of the arc-shaped flow passages.

4. The pressure self-controlled irrigation and pesticide application sprinkler for the micro-irrigation system according to claim 1 , wherein an engagement recess is provided on a wall surface of the inner cavity of the sprinkler body, a protrusion is arranged on an outer wall surface of the spring sleeve, and the protrusion is located in the engagement recess.

5. The pressure self-controlled irrigation and pesticide application sprinkler for the micro-irrigation system according to claim 1 , wherein water inlet end of the sprinkler body is connected to a water pipe through a thread.

6. The pressure self-controlled irrigation and pesticide application sprinkler for the micro-irrigation system according to claim 1 , wherein a diameter of the spring washer is greater than a diameter of a flow passage of the water outlet of the sprinkler body.

Assignees

• Univ Jiangsu

Inventors

• Liu Junping
• Zhu Xingye
• Yuan Shouqi
• Wang Xinjian
• Liu Qingsong

Classifications

• B05B1/30 Primary

  designed to control volume of flow, e.g. with adjustable passages {(B05B11/0094 takes precedence)} · CPC title

• B05B1/3006

  the controlling element being actuated by the pressure of the fluid to be sprayed (B05B1/323 takes precedence; single-unit outlet valves actuated by the pressure of the fluid to be sprayed B05B11/0062) · CPC title

• A01M7/005 Primary

  Special arrangements or adaptations of the spraying or distributing parts, e.g. adaptations or mounting of the spray booms, mounting of the nozzles, protection shields (nozzles, spray heads or other outlets B05B1/00; spray pistols B05B9/01) · CPC title

• Y02A40/22

  Improving land use; Improving water use or availability; Controlling erosion · CPC title

• A01G25/02

  Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation · CPC title