Oil-free screw vacuum pump

• Main Authors: JIANG HANGJIE, LI CHANGJU, ZHANG HUI, ZHANG CHAOPING, WANG QUANCHAO
• Format: Patent
• Language: Chinese; English
• Published: 07.03.2023
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTMACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENTPUMPS; WEAPONS

The utility model discloses an oil-free screw vacuum pump, relates to the technical field of compressors, and aims to reduce the temperature of a main machine pump and improve the vacuumizing capacity of the main machine pump. The oil-free screw vacuum pump comprises a case and a main machine pump arranged in the case, a lubricating oil tank, a heat exchanger and an oil filter assembly are arranged in the case, the lubricating oil tank is connected with the heat exchanger through a first oil pipe set, the heat exchanger is connected with the oil filter assembly through a second oil pipe set, and the oil filter assembly is connected with the main machine pump through a third oil pipe set. The host pump is connected with the lubricating oil tank through an oil return pipe set. 本申请公开了一种无油螺杆真空泵，涉及压缩机技术领域，降低主机泵温度，提高主机泵的抽真空能力。该无油螺杆真空泵包括机箱及设于机箱内的主机泵，机箱内设有润滑油箱、换热器和油滤总成，润滑油箱通过第一油管组与换热器连接，换热器通过第二油管组与油滤总成连接，油滤总成通过第三油管组与主机泵连接，主机泵通过回油管组与润滑油箱连接。