The working principle of gear type oil pump
The working principle of gear pump, when the engine works, the driving gear drives the oil pump of the camshaft, which is fixed on the driving gear shaft of the driving gear drives the driven gear to rotate, the opposite direction of rotation, the oil from the oil inlet cavity along the tooth gap and the wall of the pump to oil cavity. Thus, a suction is formed at the oil inlet, and the oil in the oil sump is sucked into the oil chamber. As the main and driven gears keep turning, the oil is constantly pressed to the desired part.The effect of the oil pump is to press the engine oil to a certain pressure and force it to the surface of each part of the engine. The structure of oil pump can be divided into two types: gear type and rotor type. Gear type oil pump is divided into internal gear type and external gear wheel type, generally referred to as gear pump.
Gear pump comprises a driving shaft, a driving gear, a driven shaft, a driven gear, a shell body, two the same number of teeth of gear meshing, installed in the shell, and the shell gear radial and end clearance is very small. The driving shaft is connected with the driving gear key, and the driven gear is sleeved on the driven shaft.When working, the driving gear drives the driven gear to rotate in reverse direction. The two gear rotates in full gear tooth between the oil pump shell along the wall of the inlet oil cavity to the oil chamber into the oil chamber, one side produced out of gear meshing and the vacuum oil is continuously carried out, the oil sump oil under atmospheric pressure by entering into the oil strainer in the cavity, the oil chamber side as into gear meshing and oil have been produced into compression, oil is pumped to a certain pressure
What are the working principles and characteristics of gear pumps? The gear pump is a volume type rotary pump, its working principle is: the gear pump has a pair of meshing gears, gear (wheel) fixed on the drive shaft and the shaft end of the gear pump extends out of the casing is driven by a prime mover, a gear pump (driven) installed on the other a shaft gear rotates, the gear pump, the liquid into the suction space along the suction pipe, along the upper and lower shell wall by two gears are respectively extruded into a discharge space (tooth and tooth before confluence), and then enter the pressure discharge tubing. The main features of gear pumps are compact structure, small size, light weight and low cost. Compared with other types of pumps, it has the disadvantages of low efficiency, large vibration, large noise and easy wear
