Analysis of asphalt insulation pump in use

Article source: unknown editor: screw pump Author: screw pump publication time: November 10, 2011 10:49 font size: [large, medium and small]
It is often encountered in practice that the head of asphalt insulation pump is lower than that of the design working point. One situation is that the pump head is too high in pump selection, but the pump is used with lower head in actual use; Another situation is that the operating point of the pump is not easy to determine in use. In other words, the flow of the pump needs to be adjusted frequently; There is also a case that the pump needs to be used in different places frequently These three conditions may overload the pump and affect the reliability of the pump It can be said that the application range of pumps without full head characteristics (including submersible sewage pumps) will be limited to a great extent
The non overload design technology of asphalt insulation pump is used in different fields and plays an important role and value in the industry. The following briefly introduces the use of asphalt insulation pump in the industry and uses it according to the corresponding ways and methods to ensure the good use value and function of asphalt insulation pump in use
In the general centrifugal oil pump, the power always increases with the increase of flow, that is, the power curve is a curve rising with the increase of flow, which will bring a problem to the use of asphalt insulation pump: when the pump runs at the design working point, the power of the pump is less than the rated power of the motor, and the use of this pump is safe; However, when the pump head decreases, the flow will increase (as can be seen from the pump performance curve) and the power will increase When the flow exceeds the flow at the design operating point and reaches a certain value, the input power of the asphalt insulation pump may exceed the rated power of the motor, resulting in motor overload and burning When the motor is overloaded, either the protection system acts to stop the pump; Either the protection system fails and the motor burns out

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