Volumetric Flow Mimicking Biological Systems
Peristaltic pumps compress a tube to push product forward. This biological method ensures wetted parts are restricted to the tube, eliminating seal leaks and valve blockages. Here, we analyze the mechanics and industrial roles of this positive displacement design.
1. Mechanical Simplicity and Seal-less Design
Without glands, pistons, or internal rotors, fluid is pushed gently along. The hose is the single wearing component, meaning rebuilding does not require removing the pump from the pipeline. By removing mechanical seals, peristaltic technology eliminates leakage points, protecting operators and minimizing product waste in chemical plants. Casing setups protect surrounding electronics.
Our heavy-duty ductile iron casings provide rugged structural protection against pipe vibrations and pressure spikes. Rotors are CNC-machined to tight tolerances, ensuring uniform compression across the hose wall and reducing structural fatigue on the rubber fibers. The robust casting extends operational life in metallurgical processes.
2. Linear Flow Control and Viscous Capabilities
Flow control is achieved by adjusting the motor rotational speed via a variable frequency drive (VFD). This provides linear dosing accuracy for water treatment chemicals and polymer feeds. Viscous fluids like glues, resins, and paint polymers are moved without shearing, since the roller compression is gentle. Flow rates remain stable under high discharge pressure spikes.
Additionally, these pumps can run dry without damage and generate up to 9.5 meters of water suction lift, allowing for dry priming in deep supply tanks. High suction vacuums remove the need for foot-valves in deep sumps.
3. Hose Elastomer Selection
EPDM is selected for hot chemicals, while Natural Rubber is preferred for heavy abrasive mining suspension clays. Nitrile handles hydrocarbons and oily wastes. The wetted path is isolated, avoiding corrosion of the mechanical housing. Choosing the proper compound prevents early swelling failures.
4. Casing Protection and Safety
The thick iron casing holds the lubricant and contains fluid leaks during hose failure. Installing leak detection probes inside the casing ensures the pump cuts off power automatically to prevent environmental spills. Diagnostic relays improve workshop security.
5. Summary and Applications
Peristaltic pumps offer reliable performance in chemical, mineral, and wastewater processes. Contact Parsa Group to select and size the optimal model for your facility, backed by domestic parts supply.