What are the reasons for insufficient pressure in a three-plunger pump?
2 Answers
There are two main reasons for the lack of pressure in a three-plunger pump. The first is the aging of the three-plunger pump, primarily due to the deterioration of rubber seals, which can be resolved by replacing the seals. The second reason is pipe blockage; insufficient pressure may result from the inlet and outlet pipes of the three-plunger pump being clogged with scale or debris, and replacing the pipes can restore functionality. Additional details are as follows: 1. Structural Types: Plunger pumps are categorized into two representative structural forms—axial plunger pumps and radial plunger pumps. As radial plunger pumps represent a new, highly efficient technology with advanced features, their increasing localization will inevitably make them a significant component in the application field of plunger pumps. A radial plunger pump is one where the reciprocating motion of the piston or plunger is perpendicular to the drive shaft. 2. Mechanical Classification: Plunger pumps are generally classified into single-plunger pumps, horizontal plunger pumps, axial plunger pumps, and radial plunger pumps.
I've encountered this issue of insufficient pressure in three-plunger pumps several times, mostly caused by wear on the plungers or cylinder liners. Over time, metal fatigue leads to poor sealing, and pressure leaks away. The hydraulic fluid is also a critical factor – if it's too thin or contaminated, it can block the pathways and affect pressure. Sometimes, debris or air in the inlet pipeline can cause airlocks, preventing pressure buildup. I recommend regularly checking the pump's seals and not waiting until they fail to take action. Also, inspect the drive components, such as loose belts causing low RPM or insufficient motor output. For maintenance, keeping the oil clean and avoiding high-temperature operation can prevent issues. Addressing problems promptly by repairing or replacing small parts can save a lot of trouble.
