What is the difference between a single-stage vacuum pump and a double-stage vacuum pump

- Mar 24, 2021-

What is the difference between a single-stage vacuum pump and a double-stage vacuum pump?

First, different characteristics
1, two-stage vacuum pump characteristics: the blade groove on the rotor of the front pump adopts the inclined blade groove, and the maximum closed working space formed by the two adjacent blades (rotor and pump body) increases, which improves the vacuum speed. Front vacuum pump, rear vacuum pump in series. The harmful space gas in the front vacuum pump is quickly inhaled by the rear vacuum pump to improve the ultimate vacuum degree of pumping.
2, single-stage vacuum pump features suction port installed with metal mesh coarse filter. It prevents solid particles from being sucked into the pump chamber. The oil separator is equipped with a high-efficiency oil and gas separation exhaust switch. When the pump is stopped, the suction valve in the suction inlet isolates the pump from the pumping system and prevents the vacuum pump oil from returning to the pumping system. The pump is cooled by air.

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