Due to its unique working principle, the rotor pump, as a positive displacement rotary pump, is widely used in the process of all walks of life, and the materials suitable for conveying are more varied. Whether it is clear water, sewage, chemical raw materials, beverages for drinking, dairy products, confectionery, cosmetics used, etc., it can be said that as long as it is in the form of a liquid material, water and difficult to flow colloids and the like can be transported by a rotor pump, Pump is a real universal pump. Although the rotor pump with unmatched delivery performance, but if the power of the match is not reasonable, the same can not play rotor pump superior delivery performance. Therefore, the rotor pump selection process, to the rotor pump selection of a material handling characteristics and requirements of the power sector is the rotor pump in the selection process of the most important part. We currently commonly used in the dynamic configuration of the rotor pump generally have the following options: 1. Manual speed control type: This form of rotor pump power transmission mechanism is equipped with a planetary friction wheel speed control system, this Rotor pump with a wide range of systems to adapt to a simple operation and maintenance, but the disadvantage is obvious, is that the planetary friction wheel speed control system, the lower speed limit is relatively large, the speed is more difficult to downgrade, and torque is small, generally suitable for Conveys lower viscosity media. However, if used in conjunction with a gear box, the output torque can be greatly increased to meet the delivery requirements of a larger viscosity medium. 2. VVVF type: VVVF rotor pump power transmission mechanism is equipped with a hardened gear fixed speed transmission and a speed can be changed by changing the frequency of the inverter motor. This structure can be configured through the frequency converter to automatically adjust the speed, that is, the realization of the flow stepless adjustment. Its advantage is a high degree of automation, output torque. The disadvantage is the need to match an additional drive, there will be some additional costs. However, with the quality of domestic inverter more stable, the price of domestic inverter is still more attractive. This configuration can be said that the rotor pump is the ideal power configuration. 3 constant speed than the output type: This configuration of the rotor pump is generally used in the process control less demanding occasions, as long as the medium will be transported within a certain period of time after the delivery of it on the details of the process Not strictly used in the occasion. The general configuration is fixed speed gearbox and general motors, but also configure the motor and belt deceleration system. This configuration has the advantage of simple structure, almost no operation, maintenance-free, in a certain process, this configuration of the rotor pump is also a better choice. Of course, in addition to the above configuration, depending on the use of the environment, there are many other configurations, such as the use of DC electromagnetic speed structure transmission, pneumatic transmission, explosion-proof motor configuration. However, the most widely used or above three configurations. Highly recommended frequency control structure, because of its high degree of automation, wide range of applications, large torque, is the best choice for cost-effective.
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