Roots type vacuum pump (referred to as the Roots pump) is a non-rotating within the compression variable displacement pump. Is the use of two 8-shaped rotor is rotated in the pump housing for suction and exhaust role. The principle is similar and Roots blower. Because of its scope of work in the low-pressure gas molecules free path is large Roots vacuum pump uses gas lose a small gap of significant opposition Roots vacuum outlets, which can achieve high compression Bi Luoci vacuum pump manufacturer, as booster vacuum pump; but it alone can not put gas directly into the atmosphere to the Roots vacuum pump, and foreline pump needs in tandem, it has been pumping gas discharged through the front stage vacuum pump to atmosphere. The principle and structure Roots vacuum pump is mainly composed of a pair of high-speed synchronous rotation of the "8" shaped rotor and two semicircular pump chamber components. The pump alone can not exhaust, must be with a pump (such as claw-type pumps, screw pumps, rotary piston pump, water pump, oil ring pumps, etc.) used in tandem. Front air intakes on the front-stage pumps in series Roots vacuum pump unit and increase the degree of vacuum before the pump, the effective range can greatly improve the pumping rate. Roots vacuum pump ultimate pressure is determined by the pre-pump. Roots pumps are widely used in vacuum casting, vacuum distillation vacuum melting, vacuum degassing, vacuum coating industry and the chemical and pharmaceutical industry, vacuum drying. Pump is not sensitive to small amounts of dust. Roots vacuum use, Haikou Roots vacuum pumps, Zhucheng East Han Machinery Co., Ltd. by John Zhucheng East Machinery Co., Zhucheng East Han Machinery Co., Ltd. (www.dhlcfj.com) (www.dhlcfj.com) strong, credible, Shandong Weifang fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Zhucheng East Han Machinery Co., Ltd. into the brilliant and you work for a better future!