Every April 10 to1October 3 10, 9: 30- 16: 00 every day. According to the "Regulations on the Management of Urban Environmental Sanitation Operation in Shenyang" issued by Shenyang Urban Management Law Enforcement Bureau on March 2, 20 18, the working hours of sprinklers in Shenyang are from April 1 day to1October 3 1 day at 9: 30- 16: 00 every year. Sprinklers, also known as sprinklers, multifunctional sprinklers, landscaping sprinklers and waterwheels, are suitable for all kinds of road washing, tree greening, green belts and lawns, road construction, factory and mine construction and high-rise building washing. It has the functions of water spraying, dust suppression, high and low spraying, pesticide spraying, guardrail cleaning and so on, and also has the functions of water delivery, drainage, emergency fire fighting and so on.