HDS inverted umbrella-type impeller surface aerators suitable for biological treatment of industrial wastewater and urban sewage. Has a simple structure, easy operation and management, oxygenation efficiency, and therefore widely used in recent years in the country HDS type aerators structural characteristics: 1, DY type aeration mechanism made simple, easy maintenance, high oxygenation efficiency; 2, no hand operation, low noise, vibration small, perennial operation; 3, with lift adjustment device (up to -100 ~ + 180mm), aerated water due to meet surface water inflow caused deep aeration tank is not fixed When the aeration efficiency; 4, according to user needs, you can adjust the speed of the impeller. First, use: 1, inverted umbrella-type surface aerator used in petroleum, chemical, printing and dyeing, leather, pharmaceutical, food, pesticides, industrial waste gas and other industries and urban sewage treatment. Widely used in a variety of activated sludge wastewater treatment aeration tank, aeration is also applicable to rivers and lagoons. 2, inverted umbrella aerator is particularly suitable for Carrousel oxidation ditch. 3, inverted umbrella-type surface aerator for low speed vertical shaft aerators, radial flow pushing ability, high oxygenation capacity, large mixing action, which in various forms has been widely used in the aeration tank. Second, the structure and characteristics: inverted umbrella aerator by the motor, coupling, reducer, wheel lifting device, inverted umbrella-type impeller and other components. 1, inverted umbrella impeller: simple structure, strong push radial flow capacity, wide area completely mixed, high power efficiency, not linked to the garbage, not blocked. 2, the impeller lifting device: impeller height can be adjusted to change the immersion depth, thereby regulating the amount of oxygenation. 3, reducer: smooth transmission, low noise, high mechanical efficiency, reliable operation, the service life of 50,000 hours or more. 4. Motor: Y series motors are totally enclosed outdoor three-phase asynchronous motors, high power efficiency, reliable operation.