Twin screw pump can be divided into built-in bearing and external bearing. In the structural type of built-in bearing, the bearing is lubricated by conveyor. The working chamber of twin-screw pump with external bearing structure is separated from the bearing. Due to the structure of the pump and the side clearance between the screws, it can transport non lubricating media. In addition, the synchronous gear is adjusted so that the screw does not contact, and half of the output torque is transmitted to the driven screw. Like all screw pumps, the external bearing twin-screw pump also has self-priming capacity, and most pump conveying elements are arranged symmetrically, which can eliminate axial force and have great suction height.
Twin screw pump series products are divided into single suction twin-screw pump and double suction twin-screw pump. This series of products has a special screw profile and supporting special structure. It is widely used in petroleum, chemical industry, metallurgy, steel, electric power, shipbuilding, pharmacy, food, building materials and other industries. It is unmatched by other pump products in terms of many applicable media, wide transmission range and complex application conditions. These characteristics also make this series of pumps have potential application and development prospects.