Iron Cast booster vacuum pump 1195m3/h 3kW,hydraulic coupling ,BSJ300LC

1195 m³/h , 3kW Mechanical Booster Pump, Roots Pump BSJ300LC ,Army green colour


Description :

Roots vacuum pumps, which are also called Roots blowers, are rotary plunger-type pumps where two symmetrically shaped impellers rotate in opposite directions inside the pump housing.


Characteristics:

• The use of an oil-free intermediate seal , a multiple-sealed ways ensures a high clean vacuum environment in the rotor chamber.
• Advanced processing ensures a good geometrical symmetry of the rotors, as well as low noise and long service life.
• A special shaft seal is used to achieve long, stable running without oil leakage.
• The BSJ-L series is made of all-aluminum alloy, a heat sink, corrosion-resistant, and efficient, energy-saving.
• The BSJ-LC series is made of cast iron. The unique liquid coupling method enables the pump to start directly under the atmosphere, which greatly reduces the time of pumping.
• Compact structure, light weight, and small volume.

​Technical Parameter :

Note: The value of 'Ultimate Pressure' in this sheet is measured by the Pirani gauge when Baosi special pump oil is used, and the value should be 4x10^-3 if the McLeod gauge is used.
The cooling water temperature of the inlet port must be 5~30℃. When the temperature is too low, please keep it in an environment that is not easy to condensation.

Performance Curve:





Dimensions:








Applications

• Semiconductor Fabrication
• LED & Display Manufacturing
• Vacuum Heat Treatment
• Physical Vapor Deposition (PVD)
• Vacuum Distillation & Drying
• Food Preservation & Processing
• Vacuum Packaging
• Scientific Research

Key Roles in Compound Vacuum Systems

• As a Booster Pump
  When paired with a backing pump (e.g., a rotary vane pump or a screw pump), the roots pump acts as a "booster" to bridge the gap between the backing pump's capacity and the system's required vacuum performance. For example:
  • The backing pump handles the low vacuum range (high pressure), while the roots pump takes over in the medium to high vacuum range, reducing overall evacuation time.
  • This combination enables systems to reach higher vacuum degrees (e.g., 10⁻³ Pa) more efficiently than single pumps.
• Energy Savings & Efficiency Enhancement
  By 分担 (sharing) the pumping load, roots pumps reduce the workload on backing pumps, extending their lifespan and lowering energy consumption. For instance, in large vacuum chambers, a roots pump can quickly remove most gases, while the backing pump focuses on achieving the ultimate vacuum.