The axial balance at low pressure is achieved by using double bushes; the power rotor and idler rotor are tensioned when running to prevent deformation of screws; meanwhile, the friction of idler rotors are reduced for better rotation conditions;
High grade of product, with exquisite appearance and delicate components:
① The most components are made of aluminum alloy by accurate die casting;
②The product is of anti-corrosion, free of paint, esthetic;
③ Innovative design in structure, simplifying the complete design under the conditions of performance requirements are met, resulting into a simple and compact product;
④ Small size and light weight: its size is 1/2 of that of conventional products, weight is 1/3 of that of conventional products;
Performance Viscosity: 3.0 ~ 1500 mm2/s
Flow:10 ~ 1200 L/min
Maximum Pressure:1.6 Mpa
Maximum Temperature:120 ℃
Similar to single-screw pump and twin-screw pump, the choice of three-screw pump is mainly considered from the performance parameters.
The selection of pump speed is mainly based on the viscosity and specifications of the medium being conveyed to determine its range.
When transporting high viscosity medium, the pump should choose low speed, if the viscosity is low, the corresponding high speed can be selected: when the medium viscosity is higher than 20 E, for large size pump (the outer diameter of the main rod is more than 60 mm), the speed should be 970 rpm or 720 rpm, if the viscosity is higher (80 E) such as viscose, the speed can be reduced, 200-500 rpm is recommended; for small size pump, when the medium viscosity is more than 20 E. If the viscosity is higher (viscosity 80 E), the speed can be reduced. 300-600 rpm is recommended.
Because the higher the speed of the pump, the smaller the volume of the pump under the same performance parameters, but because of the high speed and friction power, the wear of the pump will be greater and the life of the pump will be shorter. If the lubrication of the conveying medium is poor or contains trace impurities, the lower speed should be chosen to maintain a longer life of the pump, which is recommended below 1450 rpm.