Patent ID: 10799890

Abstract:
A differential force rotary sprinkler comprises: a V-shaped rotary arm (1) having an arm body (11); a nozzle (2); a dust-resistant sealing cap (3) fixed and connected to the arm body (11); an upper oil seal (4) disposed at a lower end of an inner wall of the dust-resistant sealing cap (3); an upper bearing bush (5); a bearing housing (6); a lower bearing bush (7); a lower oil seal (8); a position-limiting screw nut (9); and a sealing O-ring (10). After the position-limiting screw nut (9) has been tightened, an axial gap of 0.5-1.5 mm is left between the position-limiting screw nut (9) and the lower bearing bush (7). An outer arm of the position-limiting screw nut (9) and the lower oil seal (8) realize a sealed smooth surface. The sprinkler realizes uniform spray of water and can be assembled and disassembled conveniently.