Functional features of plunger pump

Piston pumps belong to the category hydraulic devices of the metering type. This design allows you to dispense and mix different components of the solutions in the required ratio. In accordance with the design features of this category of pumps is divided into two groups: large and ginormous.

Piston positive displacement pumps of the type according to its functionality and principles of operation resemble a piston. The main difference lies in the special device of the piston — plunger. This unit is presented in the form of a metal bar having a reciprocating motion. Any contact with the walls of the working chamber of the pump takes place. As the working element of the pump, the plunger must meet certain requirements, namely, to be strong, sealed and resistant to wear.

The specifics of a plunger pump is in the direction of movement of the plunger. When the Assembly moves to the right, is lowering the pressure inside the working compartment while maintaining consistently high performance in the suction pipe. With this pressure drop comes into operation the suction valve through which the solution passes into the working chamber. When moving the machine to the left, the process is reversed and the slurry is displaced from the working chamber.

Under variable levels of pressure in the plunger pump may cause surge. This can negatively affect device performance, it is recommended to resolve this issue. It is possible to use multiple pistons connected by a shaft and moving in a cyclical mode. It is also possible to differential operation of the device when liquid is pumped in either direction.

Types of plunger pumps

Water plunger pumps operate on the same principle as most other pumps. The pumped volume is entirely dependent on the internal pressure — the higher the level, the greater the possibilities that the device.

Depending on the design features distinguish different types of pumps:

- vertical and horizontal;
- one - and Mnogomernye;
with control in manual or in automatic mode;
- with heating and without it;
- single and multi-cylinder;
- sealing the cylinders.

Category high pressure pumps manufactures fluid of different properties, so they are made of those materials that correspond to this environment.