Monomer pump composition: Monomer pump plunger sleeve, plunger, spring seat, return spring, the valve, the valve spring, the valve seat, the valve nut and other components. More keyword search: Monomer pump ZHEJIANG FULE MINING MACHINERY CO., LTD , https://www.flmachines.com
1, the role of the oil valve (1) to prevent drip after fuel injection, increase the closing speed: stop the fuel supply, the next valve out of the vacuum valve into the catheter, the high-pressure tubing and pump room was cut off . When the oil valve is fully landed after a drop h distance, so the high-pressure tubing volume has been increased, so that the rapid decline in oil pressure 1MPa ~ 2MPa, quickly and simply off the oil, to prevent the fluctuation of oil pressure and " "And after the spray drops.
P pump> P spring + P residual - on;
P pump spring + P residual - off.
(2) to prevent drip oil before injection to improve injection speed: fuel injection pump, until the oil pressure is higher than the preload valve spring and the residual pressure in the high-pressure tubing, the valve rises, the seal The cone leaves the seat. Must wait until the vacuum valve on the valve with the valve seat completely out of the pilot hole, the pump oil chamber to enter the high-pressure fuel pipe.
(3) to prevent the reverse flow of fuel, the high-pressure tubing to maintain a certain residual pressure 2, the structure of the valve (1) out of the valve conical valve is the axial sealing cone, valve cone sliding in the guide hole With the guiding role. Tail processing groove, cross-shaped cross-section, so that the fuel through. The middle of the oil valve called the cylinder vacuum surface, with the sealing cone between the formation of a decompression volume.
(2) out of the valve and the valve seat is a precision couple, made of high quality alloy steel, the guide hole, the upper and lower ends and seat hole after precision machining and grinding, after the match can not be exchanged.
(3) The lower end of the valve seat and the upper end face of the plunger sleeve are precision machined closely fit, it is pressed by the tightening nut to the specified tightening torque. Compression between the nut and the seat has a thickness of copper high-pressure gaskets. There is also a low pressure gaskets between the outlet nut and the upper end of the housing.
(4) In the oil pressure valve compression nut cavity with grooved reduction vessel, in order to reduce the volume of cavity space, to promote rapid spray stop, limit the maximum lift valve role.