Understanding Industrial Vacuum Pumps

PGVe PMVSD Screw Vacuum Pump vs. Water Ring Vacuum Pump vs. Rotary Vane Vacuum Pump
In the world of industrial vacuum, not all pumps are created equal. While traditional water ring vacuum pump and fixed-speed rotary vane vacuum pump have served industry for decades, the PGVe PM VSD screw vacuum pump represents a technological leap forward—offering unparalleled energy savings, reliability, and cleanliness.

PGVe PMVSD Screw Vacuum Pump:The New Standard in Efficiency
Equipped with screw technology, permanent magnet variable frequency drive and high-efficiency permanent magnet motor design, PGVe PMVSD screw vacuum pump delivers higher efficiency.
● How it Works: Through the asymmetric screw rotor moving towards each other, the inter-tooth volume is changed periodically to realize the transport and extraction of air

The Comparison: Why Older Technologies Fall Short
VS. Traditional Water Ring Vacuum Pump
Traditional water ring vacuum pump are robust, but they are also inefficient. They achieves inhalation, compression and exhalation by changing the volume of the pump chamber. 
● How it Works: The eccentric rotor with fixed blade is a kind of rotary variable volume vacuum pump in which water is thrown to the wall of the stator and forms a liquid ring concentric with the stator. The liquid ring and the rotor blade together form a variable vacuum pump

VS. Traditional Fixed-speed Rotary Vane Vacuum Pump 
Traditional fixed-speed rotary vane vacuum pumps are common, but they have a fundamental weakness: wear and tear. The vanes slide against the cylinder walls to create a seal. Over time, these vanes wear down, and the oil required for sealing and cooling becomes contaminated.
● How it Works: The stator is divided into several working chambers with variable 
volume by the rotor installed in the stator cavity through the eccentric shaft and the rotary vane sliding in the rotor slot

Why choose our PGVe PMVSD Screw Vacuum Pump? 
Key Advantages:
● Stable vacuum pressure: The PGVe PMVSD screw vacuum pump maintains a stable terminal vacuum pressure. Unlike fixed-speed vacuum pumps, which only provide fluctuating terminal pressure output within a given vacuum range, this constant pressure supply significantly improves both the production efficiency and quality for end users. 
● Energy efficiency: Energy saving 30-60% compared with water ring pump. Energy saving of 20-55% compared with rotary vane pump, and energy saving of 70%-80% compared with vacuum generator. Compared with the traditional water ring pump, it saves 150,000 yuan of electricity cost annually. The investment payback period is 6-8 months.
● Easy maintenance: On the one hand, every 3,000 hours, only the lubricant oil, air filter, oil filter, and oil separator need to be replaced. There is no need for cumbersome oil seals, bearing replacements and main machine maintenance. On the other hand, with Deman Cloud Intelligent Control System, it has real-time fault alerts, which can reduce unexpected downtime losses.
● User-friendly: It provides stable vacuum pressure, which can reduce production failure. The Deman screw pump enables automatic adjustment of vacuum and suction.
● Longer service life: Deman PGVe PM VSD screw vacuum pump has a standard service life of 80,000 hours, significantly longer than the service of water ring vacuum pump (8,000 hours) and ratory vane vacuum pump (6,000 hours).
● Higher reliability: Deman PGVe PM VSD screw vacuum pump is a non-contact type impeller that operates continuously. Its failure rate is 90% lower than that of traditional pumps. The efficiency of the Deman permanent magnet Motor is 95%, which is higher than that of traditional motors (80%-85%). The potential for energy savings is up to 10%-15%.
Choosing our PGVe PMVSD screw vacuum pump, you will get less maintenance and life-cycle costs, but more efficiency and long-term economic benefits.