Vacuum system

Application Number: 00110877
Application Date: 2000.01.31
Publication Number: 1272390
Publication Date: 2000.11.08
Priority Information:
International: B01D53/00;C08G18/00
Applicant(s) Name: Yantai Wanhua Polyurethane Co., Ltd.
Inventor(s) Name: Liao Zengtai;Wang Wenting;Meng Xiangqi
Patent Agency Code: 37102
Patent Agent: liang cuirong
Abstract The present invention discloses a vacuum system, including three Roots vacuum pumps P1, P2 and P3, a double-stage liquid circulating pump P4, seal liquid tank D2 and cooler E2. The technological gas can be sucked from P1, passed through P2 and P3, and boosted, and compressed to atmospheric pressure, then discharged via seal liquid tank D2. The seal liquid adopts automatic circulation and direct liquid supply, and the cooler E2 is mounted on the circulating pipeline, and the inlet of the Roots vacuum pump P2 is equipped with an intermediate condenser. It is a stable reliable air-pumping vacuum system.