Diener Precision Pumps specializes in high-quality positive displacement pumps, ideal for precise fluid handling in various industries. These pumps operate by trapping a fixed amount of fluid and displacing it through the outlet, ensuring consistent...
What is a Positive Displacement Pump?Positive displacement pumps move fixed volumes of fluid through a system. On the suction side, the volume expands, while on the discharge side, it contracts. The volume per revolution is constant, regardless of pressure, vacuum, or fluid properties. These pumps are also self-priming, creating strong vacuums on the inlet, which simplifies system design and allows for easy maintenance.
Unlike centrifugal pumps, which rely on fluid momentum, positive displacement pumps maintain flow regardless of pressure changes, making them ideal for consistent fluid delivery.Types of Positive Displacement Pumps
Oops! This image does not follow our content guidelines. To continue publishing, please remove it or upload a different image.
1. Reciprocating Pumps
These pumps use linear motion to transfer fluid. They include diaphragm, piston, plunger, and valveless piston pumps. While ideal for precise metering, reciprocating pumps can create pulsed flow, leading to vibration if not properly designed. - Diaphragm Pump: Uses a flexible membrane for fluid movement. - Piston Pump: Relies on a sliding piston within a cylinder to move fluid. - Valveless Piston Pump: Eliminates valves for simpler, more durable design. - Plunger Pump: Operates similarly to a piston pump but with a plunger.
2. Rotary PumpsThese pumps use rotating elements to transfer fluid, offering smoother flow but less precision than reciprocating pumps. They include external gear, internal gear, vane, peristaltic, and lobe pumps. - External Gear Pump: Simple and common, uses two gears to trap and move fluid. - Internal Gear Pump: Uses eccentric gears with a crescent-shaped element for sealing. - Gerotor: A specialized internal gear pump without a crescent element. - Vane Pump: Uses sliding vanes for a tight seal against the cavity wall. - Peristaltic Pump: Moves fluid through flexible tubes using rollers, ideal for one-time use applications. - Lobe Pump: Similar to external gear pumps but uses lobe-shaped elements for less wear and better handling of solids.Pump Selection
Choosing the right pump is crucial for system reliability and efficiency. Collaboration with pump engineers ensures the selection of the optimal pump type, saving time, space, and costs. For guidance, consult Diener Precision Pumps.
For More Information visit us - https://dienerprecisionpumps.com/positive-displacement-pumps/
