Hand pump is a Pumps & Parts product. Key specs — Brand: Ming shi; Origin: China (Mainland).
Product Description
Strength test: 10.0MPa Seal test: 6.0MPa High Temperature Pressure Relief Test: 400cc Ancillary equipment: stations with emergency shut-off valve BY-850H asphalt accumulator BY -962 Working pressure: 2.0. ~ 6.0MPa Maximum pressure: 7.0MPa Oil chamber capacity: 4000cc Medium: 13 # machine oil or spindle oil # 2 Uses: The hand pump and supporting the use of emergency shut-off valve for liquefied petroleum gas storage and distribution station or tank car on a large tank emergency shut-off valve in the working state, the use of this pump's performance to an emergency shut-off valve to control the purpose of opening or closing .
Principle and structure of explanation: 1, hand pump reciprocating movement by the handle, so that increased pressure to open the emergency shut-off valve, the medium can be adopted in case of fire or other emergency situation, the hand pump pressure relief valve is opened, hydraulic pressure relief system quickly to ensure that emergency cut off valve closed immediately, or the temperature increased to above 75 ℃, the installation of emergency cut off valve in the pump, or Fusible now melting, automatically discharge the wood to make an emergency cut off valves automatically close it.
2, hand pump suction pressure of the main structure is the oil of the plunger, inlet valve, outlet valve and pressure relief valve.
Out by the plunger and the valve closed, sealed space is formed by the pump working chamber, when the plunger to move up to working chamber volume from small to big, because the pressure below the atmospheric pressure chamber inlet valve open, oil into the working chamber by the filter oil valve.
When the piston downward movement of the working chamber volume from large to small, the hydraulic working chamber increased, the oil valve is opened, the pressure oil into the oil system for emergency shut-off valve to open.
Pressure relief valve is used for pressure relief and pressure oil system settings, and work need to be pressure relief valve closed, Needs in the oil system pressure relief valve pressure relief will open the emergency shut off valve.
3, pump tank jacket body cavity in the pump, fuel injection fuel injection when the analysis above the plug can be opened, such as the oil column can be applied when the volume is not enough auxiliary fuel tank.
