The full name of the swash plate piston pump is the swash plate axial piston pump. It is composed of a swash plate, a plunger, an assembly, a distribution plate and a transmission shaft. There is an inclination angle γ between the cylinder and the swash plate. The plungers are distributed in the cylinder body, and their heads are tightly pressed on the swash plate through the spring return mechanism and oil pressure. The transmission shaft drives the cylinder to rotate through splines, and the swash plate and valve plate are fixed. When the transmission shaft can rotate in the counterclockwise direction (looking from left to right), the plunger not only rotates with the cylinder, but also makes reciprocating linear motion in the plunger hole of the cylinder.

Swash plate plunger pump structure:

The drive shaft axis of the swash plate axial piston pump coincides with the cylinder axis. The following figure is the structural diagram of the swash plate axial piston pump. The swash plate axial piston pump is mainly composed of pump bodies 1 and 5, cylinder 3, oil distribution plate 4, transmission shaft 6, plunger 7, swash plate 11, variable piston 13, screw 14, variable mechanism housing 16 and other parts.

Working principle of swash plate plunger pump:

The plunger is in the plunger hole of the cylinder at several points along the axial direction. The spring installed in the hollow part of the transmission shaft on the one hand presses the sliding shoe of the plunger head toward the swash plate at an angle with the shaft through the pressure plate. On the other hand, it presses the cylinder body toward the valve plate 10. The bottom volume of the plunger is a relatively closed volume.

When the prime mover drives the cylinder to rotate through the transmission shaft, due to the constraining reaction force of the swash plate, the plunger at the far point (top dead center) moves inward in the plunger hole of the cylinder, and the sealed volume at the bottom of the plunger decreases, and the oil is discharged through the oil pressure window of the valve plate. The prime mover rotates continuously, and the pump continuously absorbs and presses oil.

Application scenarios of swash plate plunger pump:

The swash plate plunger pump is one of the most widely used hydraulic power components in modern hydraulic transmission. It has the advantages of high pressure, high speed, small size and convenient variable control. It has been widely used in engineering machinery. It is mainly suitable for engineering machinery, lifting and transportation machinery, construction machinery, machine tools, ships, mining, metallurgy and other types of machinery.

Swashplate plunger pump installation:

1. Before installation and commissioning, the fuel tank, pipelines, actuators (such as oil cylinders) and valves must be cleaned. The new oil poured into the fuel tank must be filtered with an oil filter to prevent oil contamination caused by unclean oil barrels.

2. After using the new pump for one week, all the oil in the tank should be filtered once and the tank and filter should be cleaned. Then the oil should be replaced and cleaned once every 3 to 6 months according to the system working environment, workload, etc.

3. During use, it is strictly forbidden to lift the fuel tank cap due to heat generated by the system, and other measures must be taken (such as setting up a cooler).