Anti-backflow negative pressure regulator of central negative pressure system

• Main Authors: SUN GUODONG, OU WEIGUANG, LI SHENGXUN, WU GUANYOU, OU WEIQIANG, PENG YINGXIA
• Format: Patent
• Language: Chinese; English
• Published: 26.01.2021
• Subjects: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROMTHE BODY; HUMAN NECESSITIES; HYGIENE; MEDICAL OR VETERINARY SCIENCE; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The invention discloses an anti-backflow negative pressure regulator of a central negative pressure system. The anti-backflow negative pressure regulator of the central negative pressure system comprises a waste liquid collection bottle, an internal gas-liquid separation device, and a negative pressure regulation device. The waste liquid collection bottle consists of a bottle body, a bottle cap, anegative pressure suction tube connector, and a hose; the bottle cap is arranged at the top of the bottle body; the negative pressure suction tube connector is installed on the outer wall of the bottle body; and the hose is arranged on the inner wall of the bottle body, and spirally extends downwards with one end communicated with the negative pressure suction tube connector. The internal gas-liquid separation device consists of a baffle column, a cover body, and a conical float switch; the baffle column is contained in the bottle body; the cover body is connected with the bottle cap and thebaffle column; and the con