Liquid Ring Vacuum Pump DLRC Series

DLRC two‑stage liquid‑ring vacuum pumps adopt two‑stage compression for stable pumping speed at high vacuum. Efficiency is 35%‑40% higher than single‑stage models under high‑vacuum conditions with lower energy consumption.

• • Working Principle: Features eccentric‑mounted pump casing and impeller. Rotating impeller generates an eccentric liquid ring. Periodic volume change between blades, cooperating with fixed suction & discharge ports, realizes gas suction, compression and discharge.
• • Two‑stage Compression Logic: Gas discharged from the first‑stage discharge port enters the second‑stage suction port for re‑compression and exhaust. The second stage lowers discharge pressure of the first stage to improve ultimate vacuum of primary suction.
• • Coaxial Series‑connected Layout: The two stages are arranged in coaxial series. Air passage between stages is composed of intermediate disc and connecting pipe, delivering compact overall structure.
• • Main Components: Rotating assembly consists of one shaft plus two‑stage impellers. Stationary parts include inlet‑outlet housing, two pump rings, distribution plates and bearing supports.

• • Impeller‑Shaft Locking：The impeller is locked onto the shaft.

  • Mechanical Shaft Seal： Mechanical shaft seal delivers high‑reliability sealing performance with low friction loss.

  • Anchored Tie‑rod Design： Centrally anchored tie‑rod structure facilitates maintenance; complete pump disassembly is not required.

  • Precision Manufacturing： Precision casting and CNC machining eliminate the need for sealing gaskets.

• • Replaceable End Cover Plate： Adopt replaceable end cover plates.