A Integrated Compressed Air Solution
Model:DMW-P series Dry screw vacuum pump （equal pitch）
Brand:DREAM
Pumping speed: 108~910m³/h or 30~252.78L/s
Extreme Pressure:0.05mbar or 5pa
Motor power：380~380KW or 516.66~516.66hp
Model:DMW-P series Dry screw vacuum pump （variable pitch）
Brand:DREAM
Pumping speed: 180~1860m³/h or 50~516.67L/s
Extreme Pressure:0.01mbar or 1pa
Motor power：3.7~37KW or 5.04~50.31hp
Product description：
Water Cooled oil free Dry Screw Vacuum Pumps for Electronic, Metallurgy, Chemical, Food, Machinery, Medicine, Aerospace,Single Crystal Furnace and Other Departments.
Products Features：
It can run at full speed under atmospheric pressure and ultimate vacuum.
A single stage can achieve a higher vacuum degree, with an ultimate pressure of 2-5Pa.
There is no oil or water in the working chamber of the pump that contacts the process gas.
The rotors do not touch each other, reducing wear; the rotors, housings, and flow-through parts can be coated with anti-corrosion coatings such as Teflon and Hastelloy.
The gas channel in the pump is short and can be exhausted quickly.
It can be operated alone or as a fore-stage pump.
Dry screw vacuum pumps are available in two types: equal pitch and variable pitch, also known as external compression screws and internal compression screws. Compared with equal pitch screws, variable pitch screw pumps have lower exhaust temperature and higher efficiency.
DMW series equal pitch screw vacuum pump pumping speed curve 50HZ
Note: 1. The oil volume in the above table is for reference only. The oil level should be at the correct position. Special lubricat-ing oil can be used for dangerous applications.
2. The cooling water volume in the above table is based on the cooling water at 20℃ at the inlet. The amount of cooling water varies according to the secondary cooler. The temperature difference between the inlet and outlet water should be around 7℃.
DMW Series Variable pitch screw vacuum pumps pumping speed curve 50HZ
Note: 1. The oil quantity in the above table is for reference only. The oil level should be in the correct position. Special lubricating oil can be used for hazardous applications.
2. The amount of cooling water in the above table is based on the cooling water at the inlet of 20℃. The amount of cooling water is differ-ent according to the different secondary coolers. The temperature difference between the inlet and outlet water should be about 7℃.
internal structure
Advantage
1. Simple structure and easy maintenance.
2. No oil consumption, no dripping. Dry screw pumps require only a small amount of circulating cooling water and have low running costs.
3. no compression of gas in the pump, suitable for pumping condensable gases. Dry screw vacuum pumps also have their advantages in terms of safety in chemical production and product quality.
4. anti-corrosion performance, the working chamber and screw rotor surface with anti-corrosion coating, can adapt to the harsh working conditions.
5. the pumped gas is discharged directly from the pump body, no pollution of water, no environmental protection pressure, gas recovery is more convenient.
Company Certifications
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