Turbine molecular pump manufacturer

Turbomolecular pump is a kind of vacuum pump which uses high-speed rotating impeller to transfer momentum to gas molecule and make gas produce directional flow and exhaust. Turbomolecular pump is mainly composed of pump body, rotor with blades (i. E. moving impeller), static impeller and drive system.

Turbomolecular pumps have the advantages of fast start-up, resistance to radiation, resistance to atmospheric shock, no gas storage and desorption effect, no oil vapor pollution or little pollution, can obtain a clean ultra-high vacuum. Turbomolecular pumps are widely used in high-energy accelerators, controllable thermonuclear reactors, heavy particle accelerators, vacuum coating and other manufacturing processes requiring high vacuum.

EVP CXF Series Maglev Turbomolecular Pump

Characteristic:

1. pumping speed, no oil and quick start.
2. scope of work: low vacuum medium high vacuum atmosphere ultra high vacuum
3. limit vacuum: 10-6 / 10-10 Torr

Turbomolecular pump working principle:

Turbo molecular pumps are mainly vertical and horizontal two. The linear velocity of the outer edge of the moving impeller is as high as the speed of the thermal movement of the gas molecules (usually 150~400 M / sec). The compression ratio of a single impeller is very small, and the turbo molecular pump is composed of more than 10 moving impeller and static impeller. The impeller and the static impeller are arranged alternately.

The dynamic and static impeller size is basically the same, but the blade inclination angle is the opposite. The right picture is an integral rotor composed of 20 moving impellers. A stationary impeller is installed between every two impellers. The outer edge of the static impeller is fixed by a ring and the clearance between the dynamic impeller and the static impeller is about 1 mm. The dynamic impeller can rotate freely between the static impellers.

Fig. 3 is a schematic diagram of a moving blade. The gas molecules on both sides of the moving blade diffuse diffuse. On the left side of the impeller (Fig. 3a), when the gas molecule reaches point A, the gas molecule reflected in angle alpha 1 returns to the left side; the gas molecule reflected in angle beta 1 returns to the left side; the other part goes through the blade to the right; and the gas molecule reflected in angle gamma 1 goes directly through the blade to the right side.

When the gas molecule is incident near point B, the gas molecule reflected in the angle of alpha 2 will return to the right; the gas molecule reflected in the angle of beta 2 will reach the left and the other will return to the right; the gas molecule reflected in the angle of gamma 2 will pass through the blade to the left. The movement of a tilted blade causes the gas molecules to pass through the blade from the left to the right, much more likely than from the right to the left. When the impeller rotates continuously, the gas molecules continuously flow from the left side to the right side, resulting in the pumping action.

Turbo molecular pump technical parameters:

Turbo molecular pump manufacturers:

Imported and homemade. Shanghai, Tianjin, Guangzhou and many other places, Shanghai EVP, vacuum pump quality is good, after-sales is also very convenient.