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Mechanical installation accuracy affects melt pump drive torque
Edit: Zhengzhou Melt Pump Date: 2019-08-14 11:03:26

The driving part of the melt pump usually consists of variable frequency motors, gearboxes, transmission shafts, etc. During the installation process, the concentricity between the input shaft of the melt pump and the output shaft of the gearbox needs to be manually adjusted. The deviation of the concentricity is 10,000. Compensate in the way of the coupling. This method can allow a large deviation of the concentricity. Generally, the angle of space between the axis of the melt pump and the axis of the gear box is in the range of 10 degrees to 15 degrees. Compensation can be performed in the interior without causing an increase in driving torque. However, this compensation method also has a disadvantage: the larger the intersection angle between the two axis centers, the greater the rotation angular velocity of the drive shaft of the melt pump and the output shaft of the gearbox. The worse the angular velocity synchronization is, that is, the output shaft of the gearbox rotates uniformly, and the rotation speed of the input shaft of the pump is increased with the above-mentioned intersection angle, and the rotation speed is more uneven. Usually, the intersection angle is controlled at 0.5 during installation. Degrees to 10 degrees. However, sometimes the cross angle becomes larger due to deformation of the frame, human error in installation, loose fixing parts, etc. This situation is not easy to be found.

Melt pump

The use of non-universal couplings can avoid the above situation. Plum blossom couplings are one of them. This method requires high installation accuracy, and the axial and radial deviations must be controlled within 0.2mm. There is no situation where the speed of the melt pump is not synchronized with the speed of the driving part, but sometimes the driving torque is significantly increased due to deformation of the frame, human errors in installation, loose fixing parts, and bearing failure, and even overload protection or shear safety pins appear Case. Large domestic melt pump manufacturers have advanced processing technology and perfect quality inspection procedures to ensure that each melt pump equipment is provided with advantages such as high precision and long life.



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