| 摘要 |
FIELD: fire engineering. ^ SUBSTANCE: invention allows to deliver to the seat of fire various combinations of solid and spray jets of extinguishing medium, air-mechanical foam, to create protective screen. Following parts are fitted on cylindrical body of barrel: working head, connector head, control lever, filter installed in body at inlet part, spherical locking-control element coupled with seat pressure-tight connected with central nozzle. Fitted in body centrifugal nozzle is kinematically connected with working head, and centrifugal nozzle chamber is fixed in barrel body. Spherical locking-control element is kinematically connected with control lever, at that, centrifugal nozzle chamber is provided with guide channels, and centrifugal nozzle together with working head is executed with possibility of angular motion relative to chamber and provided with corresponding ports. Spherical locking-control element has central channel with fitted in it guide vanes and is located in sphere chamber consisting of semispherical inlet part, untightly connected with filter, supporting ring and seat that is pressure tight connected with fixed central nozzle. These parts divide barrel internal volume into peripheral and central parts protected by inlet grid. Centrifugal nozzle chamber is made of flexible material. Device reliability enhancement is provided by dividing the whole internal volume into central and peripheral hollows, the latter of which is protected by filter providing elimination the possibility for particulate matter to enter peripheral hollow, and by installation of radial bearing on control lever spindle which bearing reduces circumferential force on the spindle. ^ EFFECT: enhancement of its functionality and improvement of its manufacturability. ^ 5 cl, 9 dwg |
