The plunger pump is a positive displacement pump, the high-pressure sealing ring is fixed, and a smooth cylindrical plunger slides in the sealing ring. This makes them different from piston pumps and allows them to be used at higher pressures. Plunger pumps can be divided into single plunger pumps and multi-plunger pumps according to the number of plungers, as the name implies, single plunger pumps are plunger pumps with only one plunger. They are always single-acting, that is, only one end of the plunger is used to pump the liquid. Plunger pumps can have one, two, three, four, five or even more cylinders. Simplex and duplex units are usually designed horizontally.
The structure of the single plunger pump is very simple, mainly by eccentric wheel, plunger, spring, cylinder block, two check valves, the plunger and the cylinder body between the hole to form a closed volume, the eccentric wheel rotates a turn, the plunger reciprocates up and down once, downward movement oil absorption, upward movement oil discharge.
The plunger of the single-plunger pump is driven by the eccentric rotation of the pump shaft, reciprocating motion, and its suction and discharge valves are both one-way valves. When the plunger is pulled out, the pressure in the working chamber decreases, the outlet valve is closed, and when it is lower than the inlet pressure, the inlet valve opens and the liquid enters; When the plunger is pushed inside, the working pressure rises, the inlet valve is closed, and when it is higher than the outlet pressure, the outlet valve opens and the liquid is discharged. When the drive shaft drives the cylinder block to rotate, the swash plate pulls the plunger out of the cylinder block or pushes it back to complete the oil suction and drainage process. The oil in the working chamber composed of the plunger and the cylinder bore communicates with the suction and discharge chambers of the pump through the oil distribution plate. The variable mechanism is used to change the inclination angle of the swash plate, and the displacement of the pump can be changed by adjusting the inclination angle of the swash plate.
The piston pump is an important device of the hydraulic system. It relies on the piston to reciprocate in the cylinder block to change the volume of the sealing working cavity to achieve oil absorption and pressure oil. The plunger pump has the advantages of high rated pressure, compact structure, high efficiency and convenient flow adjustment, and is widely used in occasions where high pressure, large flow and flow need to be adjusted.
Plunger pumps are widely used in high-pressure, high-flow, high-power systems and where flow needs to be regulated, such as heavy-duty planers, hydraulic presses, construction machinery, mining metallurgical machinery and ships.
Jiaxing Jianhe provides you with economical and efficient lubrication, the company adheres to the professional, efficient, pragmatic attitude to provide every customer with full service. If you need a dedicated system for unique equipment, we can design and manufacture a dedicated lubrication system to provide you with the convenience you need.
Post time: Nov-30-2022