QDT Type Submersible Thruster

QDT type submersible thruster

QDT type submersible thruster is widely used in water treatment processes, including oxidation ditch thruster, mixing of various biochemical tanks, as well as river antifreeze and landscape water circulation. 

The low-speed thruster consists of a submersible motor, a reduction device, blades, and an installation system. Its characteristics include low matching power (1.5-7.5KW), low speed (34-85r/min), large blade diameter (1100-3000mm), large volume flow field, and wide service range. The swept back banana shaped blade design has self-cleaning function and is made of polyurethane or reinforced fiberglass. 

It has the advantages of light weight, high strength, and corrosion resistance. Its excellent hydraulic performance can ensure good damping effect with liquids at low speeds, thus creating a soft water flow. This series of products not only has the functions of pushing and creating water flow, but also has the function of stirring.

Selection referenc

The selection of submersible thrusters is a complex task, and the correctness of the selection plan directly affects the normal use of the equipment. 

As a principle of selection, it is necessary to ensure that the thrusters can fully exert their thrusting function in the appropriate volume, and this standard can generally be determined by the flow rate. According to the different process requirements of sewage treatment plants, the optimal flow rate for selecting the mixer should be between 0.15~0.3m/s. 

If the flow rate is lower than 0.15m/s, the effect of push flow mixing cannot be achieved. If the flow rate exceeds 0.3m/s, it will affect the process effect and cause waste. So before selecting, the first thing to determine is where the submersible thruster will be used, such as in a sewage tank, sludge tank, or biochemical tank; Next are medium parameters, such as suspended solids content, temperature, pH value, etc; The shape, depth, and installation method of the pool also have an impact on the selection, and energy-saving factors should also be considered, as this will affect the user's future operating costs.

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