US 12,219,953 B2
Pressure self-controlled irrigation and pesticide application sprinkler for micro-irrigation system
Junping Liu, Jiangsu (CN); Xingye Zhu, Jiangsu (CN); Shouqi Yuan, Jiangsu (CN); Xinjian Wang, Jiangsu (CN); and Qingsong Liu, Jiangsu (CN)
Assigned to Jiangsu University, Jiangsu (CN)
Appl. No. 18/574,303
Filed by Jiangsu University, Jiangsu (CN)
PCT Filed Jan. 7, 2022, PCT No. PCT/CN2022/070669
§ 371(c)(1), (2) Date Dec. 27, 2023,
PCT Pub. No. WO2023/092832, PCT Pub. Date Jun. 1, 2023.
Claims priority of application No. 202111390889.5 (CN), filed on Nov. 23, 2021.
Prior Publication US 2024/0284893 A1, Aug. 29, 2024
Int. Cl. A01M 7/00 (2006.01); B05B 1/30 (2006.01)
CPC A01M 7/005 (2013.01) [B05B 1/30 (2013.01)] 6 Claims
OG exemplary drawing
 
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.