What are the reasons for the plunger pump failing to build up pressure?

[EmmettAnn]

The reasons for the plunger pump failing to build up pressure are: 1. The filter on the suction line is clogged; 2. The oil level in the hydraulic tank is too low; 3. The R-angle of the variable mechanism is too small, resulting in insufficient flow, combined with the effect of internal leakage, thus unable to continuously supply pressurized oil externally; 4. Severe damage to the contact surface between the distribution plate and the cylinder block, poor sealing, or initial poor sealing between the cylinder block and the distribution plate; 5. Severe wear between the plunger outer diameter and the cylinder bore, serious oil leakage, or insufficient driving power. The plunger pump is an important device in the hydraulic system, relying on the reciprocating movement of the plunger in the cylinder to change the volume of the sealed working chamber for oil suction and pressurization. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency, and convenient flow regulation, and is widely used in applications requiring high pressure, large flow, and adjustable flow.