Structurally, the double screw pump is an external screw pump. It uses two screws that mesh and do not contact each other to pump the liquid. The dual screw pump is also complete in the structural type. There are various types such as horizontal, vertical, and heating sets. You can transport low -viscosity or high viscosity medium with particles. The screw spacing is adjusted according to the size of the particles. The correct material is selected. It can even transport many corrosive media.

As a volume pump, the dual screw pump should be separated from the inhalation room in the pump. This requires the pump body and screw outer round surface and screw and screw gaps to be as smaller as possible. At the same time, the screw and pump body, screw and screws form a sealing cavity to ensure confinement, otherwise there may be liquid back to flow back from the gap.

The unique structure of the dual screw pump allows it to realize various mediums without stirring, no pulsation, and stable; because the pump structure guarantees the working element of the pump, there is always pumping liquid as a sealing liquid, so the double screw pump is very strong in the dual screw pump. Therefore, the double screw pump is very strong. Self -absorbing ability, and can be mixed with steam fluid. The special design of the dual screw pump also guarantees that the pump has a high inhalation performance, which is a small NPSHR value.

Double screw pumps can be divided into two forms: built -in bearing and external bearing. The structure -type bearing of the inner bearing is lubricated by the conveyor. The double screw pump of the external bearing structure is separated by the same shaft of the work cavity. There is a side gap between the structure of this pump and the screw, and the independent lubricating external bearing allows it to transport various non -lubricating media. In addition, adjust the synchronous gear so that the screw does not contact, and at the same time, half of the output torque is passed to the screw from the screw. Like all screw pumps, the external bearing dual screw pump also has self -suction capacity, and most pump conveying components themselves are dual -absorbing symmetrical layout, which can eliminate axial force and also have great high suction.