Two stage vacuum pump

A two-stage vacuum pump belongs to the technical field of vacuum pump. The vacuum pump consists of two sets of suction ports and exhaust ports including the pump body and the pump body. The vacuum pump is connected in series by the rotor with blade groove and blade installed in the pump body. The blade groove on the rotor of the vacuum pump is the inclined blade groove which deviates from the rotor axis line, and the suction port of the rear stage vacuum pump is connected with the exhaust port of the front stage pump.

The utility model has the advantages of reasonable and simple structure, easy production and manufacture, and low cost. The blade slot on the rotor of the front stage pump adopts the inclined blade slot. The maximum enclosed working space formed by the two adjacent blades, the rotor and the pump body increases, which improves the vacuum pumping speed. After the former stage vacuum pump is connected in series with the latter stage vacuum pump, the harmful space gas in the former stage vacuum pump is quickly sucked in by the latter stage vacuum pump, so as to improve the limit vacuum degree of pumping. It has good application value and broad market prospect.

Two stage vacuum pump overview:

2X two-stage rotary vane vacuum pump is of two-stage structure. Its working performance is composed of high-pressure stage and low-pressure stage. The suction port of the vacuum pump is connected with the vacuum container or vacuum equipment. During operation, a large amount of gas in the container will be inhaled and discharged. When the equipment obtains vacuum, the high-pressure stage exhaust valve plate will be closed, and the gas inhaled by the high-pressure stage will be transferred to the second stage, and then inhaled and discharged through the second stage, so that the vacuum equipment can obtain a certain vacuum. According to the user’s use, it can be equipped with a vacuum booster pump, which can be used as a front-end pump. Because the pumping force of the booster pump is strengthened, the front-end pump can be continuously pumped out, which can make your equipment obtain a higher vacuum.

The utility model relates to a two-stage vacuum pump, which comprises a pump body, a suction port and an exhaust port arranged on the pump body, a front stage vacuum pump and a rear stage vacuum pump composed of a rotor with a blade groove and a blade installed in the pump body, which is characterized in that the pump bodies of the front stage vacuum pump and the rear stage vacuum pump are mutually independent, the front stage vacuum pump is provided with two exhaust ports, one exhaust port is provided with a one-way valve, and the other exhaust port The suction ports of the rear stage vacuum pump and the rear stage vacuum pump are all arranged on the end covers between them, which are directly connected and communicated.


Two stage vacuum pump application:

The rotary vane vacuum pump is suitable for metallurgy, chemical industry, electric light source vacuum, vacuum coating, food packaging, medicine, blister, electronics, drying and other fields.

Two stage vacuum pump application scope:

2X vacuum pump is one of the basic equipment to pump out gas. It can be used alone or connected with booster pump, diffusion pump, molecular pump and other ultra-high vacuum pumps as the pre pump. It is widely used in electronic device manufacturing, vacuum drying, filtering, impregnation, coating, welding, smelting and laboratory equipment.

2X vacuum pump is allowed to operate for a long time in the range of 5 ℃ ~ 40 ℃ ambient temperature and the pressure at the air inlet is less than 10 Torr. When the relative temperature of the extracted gas is more than 90%, the gas ballast valve shall be opened.

The air inlet of 2x vacuum pump shall be continuously open to the atmosphere for no more than 3 minutes

2X vacuum pump is not suitable for pumping the gas which corrodes the metal, reacts with the pump oil chemically, contains the particle dust, as well as the high oxygen, explosive and toxic gas.

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