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Performance comparison |
Water ring vacuum pump |
Domestic turbo vacuum pump |
Imported popular turbo vacuum pump |
Esurging maglev turbo vacuum pump |
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Bearing |
Bearing |
Ball bearing |
Tilting-pad bearing |
Ceramic bearing |
Magnetic bearing, the first in China, mature technology, high stability |
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Technology source |
Domestic |
Import/domestic |
Import |
Tsinghua University, independent domestic production |
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Service life |
1-2 years |
2 years |
2 years |
Semi-permanent |
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Mechanical loss |
3.5% shaft energy consumption |
10% shaft energy consumption |
3.5% shaft energy consumption |
Electromagnetic induction, shaft energy consumption is 0.45kW |
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Impeller |
Type |
Welding |
Casting/forging , open/closed impeller |
Forging, closed impeller |
Titanium alloy three-dimensional flow impeller |
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Service life |
5-8 years |
10 years |
15 years |
20 years |
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Aerodynamics efficiency |
Low |
High |
High |
High |
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Maintenance |
No |
Once half a year |
Once half a year |
Once a year |
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High-speed motor |
Motor type |
Low-speed asynchronous motor |
Asynchronous AC motor |
High-speed permanent magnet motor |
Internationally leading high-speed permanent magnetsynchronousmotor |
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Transmission type |
Belt or coupler |
Coupler and gear |
Direct driving |
Direct driving |
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Motor efficiency |
86% |
94% |
94% |
Above 97% |
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Cooling |
Large amount of circulating water cooling |
Cooling tower |
Cooling fan for each pump |
Self circulating water cooling, only a small amount of cooling water is needed |
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Speed control |
unavailable |
available |
available |
Precise control of speed |
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Speed control method |
No speed control system |
Frequency control |
Frequency control |
Intelligent DC speed control system changes the speed of shaft and air volume |
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Working range |
Very small |
Small |
Small |
Wide |
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Control system |
Control system |
No control or protection system |
Control andprotection system works |
There is control and protection logic, but it needs to be programmed by the customer |
There is an intelligent control and protection system to comprehensively monitor and protect the operation of vacuum pump |
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Remote network monitoring |
No |
No |
No |
24-hour remote network monitoring can better prevent and solve on-site emergencies for customers |
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Maintenance |
Lubricant |
Check every shift, add regularly, high cost |
Check every shift, add regularly, high cost |
Check every shift, Replace all in 3 months, high cost |
No need |
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Quick-wear part |
Bearing, sealing, lubricant pump |
Bearing, sealing, lubricant pump, cooling tower |
Bearing, sealing, lubricant pump, cooling fan, cooling tower |
No |
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Cost |
Low |
High |
High |
Low |
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Operation |
Operation cost |
Very high |
High |
Medium |
Low |
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Overall efficiency |
45% |
62% |
68% |
77% |
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After-sale maintenance |
Short cycle, low cost and high failure rate |
Short cycle, low cost and high failure rate |
Long maintenance period, high cost and high failure rate |
Rapid response, independent core components, free of mechanical maintenance, low cost |
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