It consists of a driving device, a chain for a body, a sprocket wheel, a shaft and a bearing, a flight, a guide rail, and other safety devices. It is divided into a metal type and a non-metal type depending on used the material FRP, Nylon, Polyurethane, Polyethylene, etc.

1. It has good energy efficiency and can generate large rotational force with less power.
2. Protect the impeller from external shocks and distribute the force of the fluid evenly.
3.The fluid is moved up and down to prevent lamination of sludge at the bottom and minimize the surface flow to minimize oxygen transmission from the atmosphere.
4. By limiting the flow of fluid and the resistance value transmitted to the impeller blade as much as possible, the rotational vibration can be reduced to extend the life of the device.

1. Lubrication action automatically re-lubricates the bearing by setting the injection interval.
2. Using large roller bearings, it is resistant to excess capacity and maximum life.
3. It has a check window to check oil existence.
4. The gearbox case has a stopper for oil injection and discharge to facilitate maintenance and repair.
5. Hollow-Quill unit is to protect the shaft from external conditions, and is equipped with a cap/shaft protection cover for waterproofing.