Features:
Flow and Pressure Characteristics: It has a wide flow range, reaching up to 18,600 cm³/min. The maximum working pressure can reach 5 MPa, and both the flow and pressure pulsations are small.
Adaptability to Transported Media: It can transport a wide variety of liquids with a broad viscosity range from 1 mm²/s to 760 mm²/s. It can adapt to different media such as corrosive, high-viscosity, volatile, flammable, highly toxic liquids, as well as oils and water.
Operation Stability: Due to the relatively low inertial force of the rotating parts inside the pump, it can operate at a very high rotational speed. Meanwhile, the flow is uniform and continuous, with low vibration and noise.
Anti-interference: It is not very sensitive to the incoming gas and dirt.
Structure and Maintenance: It has a solid structure, is easy to install and convenient to maintain.
Temperature Adaptability: It has heat resistance. The general working temperature ranges from 1 °C to 250 °C. In special cases, it can be customized. Moreover, heating or cooling structures can be provided according to the needs of the transported medium.
Transport Flexibility: The pump can transport in both forward and reverse directions.
Advantages: Compared with other types of pumps, the triple screw pump has higher efficiency and relatively lower energy consumption when transporting high-viscosity liquids. Moreover, due to its structural characteristics, it has less wear during operation, a longer service life and lower maintenance costs. For example, in the chemical industry, when used to transport chemical raw materials with high viscosity, compared with gear pumps and others, the triple screw pump has better transportation effect and more stable operation.
Working Principle:
Through the mutual engagement of the screws and the close cooperation between the screws and the inner wall of the liner barrel, sealed spaces are formed between the suction port and the discharge port of the pump. As the screws rotate and engage, these sealed spaces are continuously formed at the suction end of the pump and the liquid is sealed in them. Then, the liquid is continuously pushed along the axial direction of the screws from the suction chamber to the discharge end, and finally discharged, forming a continuous, stable, axially moving pressurized liquid.
Structure:
It includes a middle screw and two driven screws on both sides, all of which are driven to rotate by the prime mover. The threads of both the main and driven screws are double-start threads, which makes several dynamic sealing chambers formed between the inlet and outlet of the pump. These dynamic sealing chambers move the liquid axially from the inlet to the outlet of the pump and make it pressurize step by step.
Application Fields:
It is widely used in industries such as chemical engineering, petroleum, metallurgy, shipping, electric power, papermaking, pharmaceuticals, printing and dyeing, seawater desalination, food and wine making, and heating and ventilation. For example, it is used to transport lubricating oil, fuel oil and so on on ships.
Precautions for Model Selection:
Selection of Rotational Speed: It should be determined according to the viscosity of the transported medium and the specifications of the pump to ensure the service life and working efficiency of the pump.
Selection of Structure: It should be comprehensively considered according to the properties and temperature of the transported medium and other factors to meet the needs of different working conditions.
Matching and Selection: Considering the actual operating conditions and power reserve of the pump to ensure its safe and reliable operation.
