Disassembly and assembly step of gear pump
The preparatory work before the assemblyAll the parts will be clean and dry before the assembly, all the oil to ensure clean and smooth, burr on the parts with the appropriate method to eliminate the damage caused by bump scratch, etc..The assembly program1, with good drive gear and the driven gear shafts into the left side (non output shaft side) bearing end cover, pump installed, install complex should be disassembled by mark corresponding load, must not be anti loaded.Assembling seals, the position should be correct, the tightness is appropriate.After aligning the dowel and the locating hole, install the right end cover and tighten the bolt. The side of the driving shaft should be screwed and screwed symmetrically so as to ensure the uniform clearance of the end face. Caution: the fastening bolts of the pump cover shall be uniformly tightened, and the head of the six angle bolt shall not protrude out of the outer surface of the pump cover.Install the compound shaft, install the motor, adjust the coaxiality to the good coupling, and make sure the rotation is flexible.
Finally, check the pump body and the two gear thickness difference, the analysis of the three thickness size on the importance to ensure the pump performance.It will cover, remove, remove the drive gear and the driven gear from the pump body (removed before the drive gear and the driven gear and the corresponding position to remove the rear cover, mark), observe the passive axis through hole, lubricating oil circulation channel, bearing condition.All parts of it, with kerosene or diesel will be removed for cleaning and placed in a container for safekeeping, measurement and inspection.Assembly steps of gear pumps:
The screwdriver gently along the front cover with the pump body surface of the end cover to pry loose (Note: don't pry too deep, so as not to scratch the sealing surface, because the machining precision and the pump seal depends mainly on the sealing surface of the seal body two unloading groove on the surface to achieve, remove the front cover). Remove the sealing ring, observe the pump in the structure and components of the mutual position.The drive shaft is rotated by hand, according to the oil outlet position, determine the direction of rotation of the input shaft gear; observation of sealing volume size changes, the trapped oil seal changes in volume and size, to find the trapped oil unloading groove position, clear its function.
Disassembly step of gear pump:The six party wrench loosen (loosen symmetry before the end cover and the pump body junction mark) and remove the pump six bolts on the cover, remove the washer together with one by one.
