Why melt pump outlet pressure is low

Melt pump is one of the important key equipments in the field of polymer material molding and processing, which has the features of smooth flow, small pressure fluctuation and long service life. However, in practice, sometimes there will be a melt pump outlet pressure becomes low, which will not only affect the quality and yield of the product, but also increase production costs and maintenance costs. So, why the melt pump outlet pressure will become low?

Polymer melt pump outlet pressure becomes low may have the following reasons:

1. Changes in the nature of the material

The viscosity, density and other properties of the material will change with the temperature, pressure and other conditions. If the viscosity of the material increases or the density decreases, it will lead to a decrease in the outlet pressure of the melt pump. Therefore, in the production process, you need to control the temperature, pressure and other conditions of the material to maintain good fluidity of the material.

2. Motor failure

The motor is the power source of the melt pump, if the motor fails, such as unstable speed, reverse rotation, etc., it will lead to fluctuations in the outlet pressure or drop. Therefore, it is necessary to check the running status of the motor regularly and remove the faults in time.

3. Pipe blockage

Clogging of the extrusion melt pump outlet pipe can also lead to a drop in outlet pressure. If the pipeline clogging is serious, it may even lead to the melt pump can not work properly. Therefore, you need to regularly check whether the outlet pipe is smooth and clear the blockage in time.

4. Control system failure

Melt pump control system is necessary to ensure its normal operation, if the control system failure, such as sensor failure, solenoid valve does not act, etc., will lead to the export pressure drop or fluctuations. Therefore, it is necessary to regularly check whether the various components of the control system are working properly and troubleshooting in a timely manner.

In summary, there are a variety of possible reasons for the low outlet pressure of the melt pump, and specific problems need to be specifically analyzed. In daily use, you need to strengthen the maintenance and repair of equipment, regular inspection and replacement of wearing parts to ensure its good working condition. At the same time, you also need to strengthen the control and management of the production process, to avoid improper operation or changes in the nature of the material and other reasons leading to a drop in outlet pressure. Only in this way can we ensure the normal operation of the melt gear pump and the smooth progress of production.

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