In the packaging production line, the packaging machine vacuum pump is the core equipment to ensure the suction bag forming, sealing and stable operation. Its performance and maintenance details are directly related to production efficiency and product quality, and the oil viscosity selection is often overlooked, but it plays a decisive role in the stability of the suction bag.
Relationship between oil viscosity and the working principle of the vacuum pump
The packaging machine vacuum pump forms a negative pressure by extracting air to make the packaging bag close to the surface of the product. The lubricating oil (vacuum pump oil) in the pump is not only used to reduce mechanical friction, but also undertakes sealing and heat dissipation functions. If the oil viscosity is too high and the fluidity decreases, it will cause heat accumulation in the pump, increase the running resistance, slow suction bag action and even insufficient vacuum; on the contrary, if the viscosity is too low, an effective oil film cannot be formed, which will aggravate the wear of parts and reduce the sealing of the vacuum pump, and ultimately affect the flatness of the suction bag and the packaging sealing effect.
Direct impact of oil viscosity selection on bag suction stability
Industry experience shows that the oil viscosity selection needs to match the working environment and load of the packaging machine vacuum pump. For example, in high temperature environments, it is recommended to use vacuum pump oil with slightly higher viscosity to maintain lubrication performance at high temperatures; while in normal temperature or light load scenarios, medium and low viscosity oils can complete the cycle more efficiently. If the selection is inappropriate, problems such as bag suction offset, air leakage or packaging wrinkles may occur, increasing the frequency of shutdown and debugging, and dragging down production efficiency.
Maintenance suggestions for optimizing oil viscosity
Regularly check oil quality: Vacuum pump oil oxidation or contamination will change the actual viscosity and need to be replaced periodically.
Matching seasons and environments: Low temperatures in winter can moderately reduce viscosity, while high temperature resistant models need to be selected in summer.
Combined with equipment load: It is recommended to use high viscosity oil for packaging machine vacuum pumps that run continuously and at high intensity to enhance protection, and intermittent operation can be flexibly adjusted.
A comprehensive solution to improve production stability
In addition to paying attention to the oil viscosity selection, companies also need to pay attention to the integrity of vacuum pump maintenance. For example, regularly clean the filter system and check the sealing of the pipeline to prevent impurities from entering the pump body and causing oil deterioration. Through scientific maintenance strategies, not only can the service life of the packaging machine vacuum pump be extended, but also the bag suction action can be ensured to be stable, the waste of raw materials can be reduced, and sustainable improvement of production efficiency can be achieved.
