Dry pumps are a type of vacuum pump that operate without the use of oil or other lubricants.
They provide a clean vacuum and minimal waste generation.
The different types of dry pumps include:
1. Diaphragm Pumps
Diaphragm pumps use a reciprocating diaphragm to create vacuum.
They are oil-free and require little maintenance.
Diaphragm pumps are suitable for applications sensitive to contamination.
These pumps can be customized with different speeds, pressures, and regulation types (e.g., RPM or valve-regulated).
They often feature corrosion-resistant coatings like PTFE, making them compatible with a variety of chemical solvents.
2. Scroll Pumps
Scroll pumps utilize two interleaved spiral scrolls that move eccentrically to compress air and vapors.
They direct the compressed air and vapors towards the exhaust.
Scroll pumps can achieve deeper vacuum levels (e.g., 10–3 Torr) and higher pumping speeds compared to diaphragm pumps.
They are suitable for applications requiring high flow rates, such as gloveboxes.
However, they may require periodic replacement of tip seals and are generally less corrosion-resistant than diaphragm pumps.
3. Turbomolecular Pumps
Turbomolecular pumps use rotating blades to create a directional momentum transfer to gas molecules.
They effectively pump the gas molecules out.
These pumps are typically used in scientific and semiconductor applications where very high vacuum levels are required.
4. Piston Pumps
Piston pumps use a piston to displace air, creating a vacuum.
They are often used in applications where a moderate vacuum is needed.
Piston pumps can be designed to be oil-free, making them suitable for clean environments.
Each type of dry pump offers specific advantages and is suited to different applications based on factors such as vacuum level requirements, flow rates, chemical compatibility, and maintenance considerations.
Continue Exploring, Consult Our Experts
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