DZ-Q1 liquid injection gun is a constant pressure liquid injection gun suitable for coal mine hydraulic prop.

    The liquid injection gun by a liquid injection nozzle, retaining ring inlet tube, the gun, the differential piston, the control lever, adjusting nut, manual device, springs and other components.

    With differential piston lock control lever, open the inlet valve, the lock mode is mechanical.

     When the initial hydraulic prop support force reaches a predetermined value, the differential piston automatically discharged by the hydraulic differential lock, close the inlet valve.

     Device can also be manually close the inlet valve.

     The constant pressure liquid injection gun can be adjusted by adjusting the spring force of the size of the nut, adjust the initial hydraulic prop support force.

Main Parameter

1,working pressure:15-20MPa 
2,handle force when injection:157N 
3,working medium:contains 1%-2%M10 emulsion 
4,working principle