BZJ series multi-stage Roots pump main features: 1, no oil and water Roots pumping cavity pump, no secondary pollution; 2, with two single-stage pumps in series as compared to the production of a compact Roots vacuum supply, occupancy small space; 3, small parts, easy maintenance and repair Roots vacuum outlets, reducing the cost principle and structure Roots vacuum pump is mainly composed of a pair of "8" shaped rotor and two semicircular synchronous high-speed rotation of the 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 pump manufacturers supply, Lanzhou Roots vacuum pumps, Zhucheng East Machinery Co., Ltd. by John Han Machinery Co., Ltd. Zhucheng East. 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!