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    VEHICLE-MOUNTED LARGE-FLOW FIRE-FIGHTING FOAM FLUID MIXING SYSTEM
    1.
    发明申请
    VEHICLE-MOUNTED LARGE-FLOW FIRE-FIGHTING FOAM FLUID MIXING SYSTEM 有权

    公开(公告)号：US20210346740A1

    公开(公告)日：2021-11-11

    申请号：US16975421

    申请日：2019-05-14

    申请人： China University of Mining and Technology

    发明人： Ziyi JIANG ,  Wei LI ,  Jinsong ZHU ,  Fan JIANG ,  Ge ZHAO ,  Xiumei LIU ,  Beibei LI

    IPC分类号： A62C5/02

    摘要： The present invention discloses a vehicle-mounted large-flow fire-fighting foam fluid mixing system, including a supply kit, a mixing kit, a control kit, and a pipeline kit. The supply kit includes an auxiliary gas supply device, a fire pump, an integrated foam pump, a fire pump main motor, and a coupling. The mixing kit includes a fire monitor interface, a foam generating device, and a fluid mixing device. The control kit includes a foam mixing proportion single-chip microcomputer control system, an alarm module, a power module, an auxiliary air compressor switch module, a frequency converter, and a central control display screen. The pipeline kit includes an air drainage tube, a fire hose, a foam liquid pipe, and a pipeline valve. For the problems of flow fluctuation and low foam foaming efficiency, the present invention optimizes the design and adopts a new control policy, thereby implementing precise mixing under the large-flow condition.

    DOUBLE-SPRING AND HIGH-PRECISION HYSTERETIC PRESSURE CONTROL VALVE
    2.
    发明申请
    DOUBLE-SPRING AND HIGH-PRECISION HYSTERETIC PRESSURE CONTROL VALVE 审中-公开

    公开(公告)号：US20200133311A1

    公开(公告)日：2020-04-30

    申请号：US16302677

    申请日：2018-01-16

    申请人： CHINA UNIVERSITY OF MINING AND TECHNOLOGY

    发明人： Xiumei LIU ,  Ruirui LI ,  Beibei LI ,  Jie HE

    IPC分类号： G05D7/01 ,  F16K1/54 ,  F16K31/12 ,  F16K31/56

    摘要： Disclosed in the present invention is a double-spring and high-precision hysteretic pressure control valve, including an upper valve body, a lower valve body, a double-spring pressure adjustment valve, a spring energy storage linkage mechanism, and a main valve. The double-spring pressure adjustment valve includes a rough adjustment stud, a rough adjustment spring, a fine adjustment stud, a fine adjustment spring, a spring guide sleeve, and a pressure adjustment valve spool. The spring energy storage linkage mechanism includes a guide block, a valve spool control linkage, a tension spring, and a tension spring shift lever and a tension spring sliding hook. The valve spool control linkage is connected to the guide block at one end, and connected to a main valve spool drive rod via a pin at the other end. The tension spring sliding hook is mounted on the guide block, and one end of the shift lever is placed below the tension spring sliding hook so as to drive the tension spring sliding hook to move upwards, thereby controlling the state of the tension spring and enabling energy storage of the spring. The spring energy storage linkage mechanism make the valve spool to open and close momentarily at the right portion. The double-spring and high-precision hysteretic pressure control valve according to the present invention has a low cost, and can provide precise control of opening and closing pressures for the pressure control valve and control of both states of opening and closing for the main valve.