Patent ID: 11865389
Assignee: CHINA UNIVERSITY OF MINING AND TECHNOLOGY
Field: Environmental technology (Chemistry)
Classification: CPC A | IPC A

Claim 3:
4. The vehicle-mounted large-flow fire-fighting foam fluid mixing system according to claim 2, wherein the pipeline kit comprises an air drainage tube (3); the air drainage tube (3) comprises a high pressure air drainage tube (3-1) and an atmospheric pressure air drainage tube (3-2); the high pressure air drainage tube (3-1) is connected between a left entry of an air inlet end of the negative pressure current collector (2-2) and the auxiliary air flow pressure monitoring instrument (4) and between the auxiliary air flow pressure monitoring instrument (4) and the auxiliary gas supply device (5); and the atmospheric pressure air drainage tube (3-2) is connected to a right entry of the air inlet end of the negative pressure current collector (2-2).