FOAM PROPORTIONAL MIXING DEVICE

原文（中国語）

Systems, methods, and devices related to mixing foam fire suppressant are provided. A foam proportional mixing device includes a first pump. The first pump includes an inlet pipe coupled with a first housing, such that the inlet pipe is in fluid communication with a first cavity defined by the first housing. The first pump includes a foam receiving port arranged on the inlet pipe and a pair of rotors positioned within the first housing. The foam proportional mixing device includes a second pump. The second pump includes a pair of gears located within a second cavity defined by a second housing. The foam receiving port is in communication with an outlet of the second pump, such that the first pump is in fluid communication with the first cavity.