The utility model discloses an air-
breathing type detection device adopts integral injection molding technology to combine the convex design of air inlet
pipe and air outlet
pipe, simplifies the die structure, reduces the manufacturing cost, selects lightweight high strength
nylon material for the cavity, realizes compact
layout while guaranteeing the
structural stability, adapts to the installation demand of narrow space, at the same time, through the external air inlet
pipe and air outlet pipe structure, the conventional replacement and maintenance of dust screen do not need to open the cavity, greatly simplify the consumable replacement process, significantly improve the maintenance efficiency, and through the double sealing structure between the cover body and the box body and the secondary sealing design of PCB board, construct multilevel
protective barrier, effectively isolate external environment interference, reduce the dependence on sensor sensitivity, ensure the detection accuracy while reducing the overall cost of equipment, and the application has the advantages of high sealing performance, high
maintainability, compact structure, high performance, low cost and the like, is easy to assemble, disassemble and overhaul, and significantly improves the comprehensive performance and practical value of the detection device.