The Working Of Plunger Pumps

What is Plunger Pump:

A plunger pumps is a type of reciprocating pump with a high-pressure seal that stays in place and a smooth, cylindrical plunger that slides over the seal. The plunge pump is different from the piston pump in these two ways. A piston pump can’t make as much pressure as it can. So, it can be used for things that require high pressure. By the end of this article, you will be familiar with plunger barrel assembly.

Pumps with a piston or a plunger use a chamber that expands and contracts to pull in fluid and increase the pressure. Because these are reciprocating pumps, the plunger moves up and down and back and forth instead of in a circle (rotating), which causes the chamber to expand and contract.

People also call a plunger pump a high-viscosity pump, a high-pressure pump, or a high-pressure pump because it can pump at high pressure. These pumps can also move both solids and fluids with a high viscosity. These reciprocating pumps are used to move wastewater from factories and cities. Below, we have discussed plunger and barrel assembly briefly. 

How a Plunger Pump Works

In a plunger pump, there is no piston inside the stuffing box. Instead, there is a fixed seal. The main parts of a plunger pump are the connecting rod, crankshaft, and plunger.

Plunger Pump Working

The following describes how a plunger pump works:

  • A connecting rod goes from the plunger of the pump to the crankshaft. The other end of this crankshaft is connected to an electric motor.
  • As the motor sends power to the crankshaft, it changes the rotary motion of the motor into a reciprocating motion. Through a connecting rod, the crankshaft also sends this power to the plunger.
  • When the plunger starts to move back and forth, it moves up and down inside the cylinder.
  • As the plunger moves down, a vacuum is created in the pump chamber. Because of this vacuum, there is a difference between the pressure of the fluid outside the cylinder and the pressure of the fluid inside the cylinder.
  • The plunger then pulls liquid into the chamber. When it has sucked in the right amount of fluid, the suction valve closes and the plunger moves up.
  • As the plunger moves up, the chamber gets smaller, and the fluid gets under more pressure.
  • When the pressure inside the fluid is higher than the pressure in the delivery tank, the outlet valve opens and the fluid flows into the delivery tank or wherever it is needed.
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