EVP Roots Vacuum Pump Supplier. Supply a variety of vacuum pumps, Roots vacuum pump (also known as negative pressure fan) refers to the pump is equipped with two opposite direction synchronously rotating blade-shaped rotors, between the rotor, between the rotor and the inner wall of the pump shell there is a small gap but not contact with each other. It is a kind of vacuum pump without internal compression. Usually, the compression ratio is very low. Therefore, high and medium vacuum pumps need front-stage pumps. Vacuum pumps with air pumping are realized by pushing a pair of bladed rotors synchronously and reversely in the pump chamber to move the gas. It refers to a mechanical vacuum pump with a pair of sole-shaped rotors which rotate synchronously and at high speed. This pump can not be pumped separately. The front stage needs to be equipped with oil seals and water rings to discharge air directly.
Roots Vacuum Pump Principle:
Roots Vacuum Pump is a large number of front-stage pumps that operate vacuum pumps together and require suction in all industrial vacuum applications.
Roots Vacuum Pump operates completely in a non-contact, non-sealed oil or other working liquid compression chamber. Roots vacuum pumps are equipped with bypass valves, which requires free maintenance.
With a wide range of suction capacity and extreme pressure, Roots vacuum pumps can be customized to become a front-end pump of an integrated vacuum system, which enables us to customize solutions suitable for most areas of industrial applications and also requires high vacuum efficiency.
For evacuation of explosive gases or processes that do occur in flammable and explosive environments, mechanical boosting technology is based on the mature concept of convection cooling Roots pump so that Roots vacuum pump has absolute safe operation. Thanks to advanced industrial design and rigorous testing, Roots vacuum pump can meet high explosive working conditions.
Technical parameters:
| Model | ZJP- 70 | ZJP- 150 | ZJP- 300 | ZJP- 600 | ZJP- 1200 | ZJP- 2500 | |
| Pumping speed（L/s） | 70 | 150 | 300 | 600 | 1200 | 2500 | |
| Ultimate pressure （Pa） |
5×10-2 （1stage piston pump as backing pump) | ||||||
| 1×10-1 (2 stage piston pump as backing pump) | |||||||
| Diff. pressure at overflow valve （Pa） | 4×103 | 2. 7×103 | |||||
| Motor rotary speed（RPM） | 3000 | ||||||
| Suitable motor power（kW） | 1.1 | 2.2 | 4 | 7.5 | 11 | 22 | |
| Flange size | inlet（mm） | 80 | 100 | 150 | 200 | 250 | 320 |
| outlet（mm） | 80 | 100 | 150 | 200 | 200 | 320 | |
| Cooling water consumption（L/h） | 120 | 150 | 200 | ||||
| Allowable temperature（℃） | 100 | ||||||
| Vacuum pump oil | 100# | ||||||
| Weight(without motor)（kg） | 110 | 205 | 265 | 780 | 880 | 1350 | |
Roots Vacuum Pump Products Application:
It is widely used in vacuum packaging, food processing, pneumatic conveying, semiconductor, solar energy, plastics, chemical industry and pharmaceuticals, hospital medical treatment, environmental protection engineering, composite materials, metallurgy, petroleum and natural gas, surface treatment technology, electronics and power, wood processing, machinery manufacturing and many other industrial fields.
Roots vacuum pump features:
Quick start, less labor. The operation and maintenance cost is low, the pumping speed is high, the efficiency is high, and it is insensitive to a small amount of water vapor and dust contained in the pumped gas. It has a large pumping rate and can expel the sudden gas. This pressure range is just between the oil-sealed mechanical vacuum pump and the diffusion pump. Therefore, it is often connected in series between the diffusion pump and the oil-sealed mechanical vacuum pump to increase the pumping capacity in the middle pressure range. At this time it is also known as a mechanical booster pump.
Roots vacuum pump covers the range of air absorption from 250 to 3000 m3/h. Roots pump is an excellent vacuum acquisition device that can suck a large amount of air. It can greatly extend the performance of other vacuum pumps, which means faster pumping speed and higher vacuum. The oil tank and pump chamber with bearings and gears in Roots pump are separated, so the operation of the rotor is contactless and completely dry. In particular, our pumps can be completely sealed with mechanical seals to isolate them. Roots pumps operate at relatively low pressure and are not exposed to the same concentration of corrosive process media as the previous pumps and are very reliable.
Therefore, it is very suitable for low and medium vacuum applications in chemical industry, petroleum, plastics, semiconductor, coating, food, vacuum furnace and other industries. It is suitable for use in series with sliding valve pump, liquid ring pump, rotary vane pump and dry vacuum pump. It is used to increase the working pumping capacity, shorten the pumping time and increase the limit vacuum. We can provide you with the design and products of solutions for special applications. We are also happy to help you design your vacuum system. With reliable products and decades of application experience and professional technology, we are always ready to provide you with the best solution in low and medium vacuum applications.
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