Hereunder we will share a case of our domestic customer with over 30 PPR pipe extrusion lines. customer’s material conveying was installed the Roots pump units ,but suffered from high energy consumption, frequent maintenance, and excessive noise, which long constrained the production efficiency. The customer requires Mconvey to offer a stable, reliable negative-pressure material conveying for each production line.
Mconvey Solution
Adopted 2 sets of 75kW permanent-magnet two-stage vacuum pump sets (1 for spare use) to replace 28 sets of 11kW standard Roots blowers.
Performance of 2 stage PM Vacuum pump
- Two-Stage Roots Blower: Two-Stage Compression, Fast Evacuation to Low Vacuum
- Permanent-magnet synchronous + VFD motor: auto speed regulation based on vacuum
- Intelligent central dust filter: optional automatic/manual filter change, no stop for cartridge replacement
- PLC & smart monitoring: data recording + mobile remote APP control


Mconvey Permanent Vacumm Pump Advantages
- Oil & water free, zero pollutant discharge, environmental friendly
- Self-developed water-cooled PM motor, efficiency ≥95%
- Modular layout, single-unit maintenance no production stop
- Custom 3-lobe rotor ensures stable airflow at medium-high pressure
- Smart dust collector, filter change without shutdown
Mconvey Permanent Vacumm Pump Effects
| Items | Original Roots | Mconvey Vacuum Pump |
| Vacuum degree (kPa) | -45 | -45 |
| Duration(h) | 720 (1 month) | 720 (1 month) |
| Total Feed(t) | 540.00 | 9685.52 |
| Power Consumption (kWh) | 1453.68 | 17905.87 |
| Unit Power Consumption (kWh) | 2.69 | 1.85 |
| Energy Saving | / | 31.33% |
- ≥30% energy saving vs traditional Roots blowers
- Soft start, no heavy current surge, longer service life
- Stable pressure & even feeding, reduced scrap rate
Mconvey’s permanent magnet vacuum pump system — making material conveying easier, quieter, and smarter.
Contact us: +86 13392775773




