Gear Box and Other Products

 

 

 

 

 

BEI Rotary Airlock Valves

  

 

 

 


Bombay Engineering Industries offers both custom engineered and standard Rotary Airlock Valves. These are extensively used for handling bulk solids including fine (100mm) and granulate material (300 mum). Detailed engineering for specific applications and proper selection of materials of construction enable BEI make Rotary Airlock Valves highly reliable.

In the standard version, 5 capacities are offered ranging from 3 litres per revolution to about 52 litres per revolution. This range meets all the requirements in most of the cases, but if some specialised requirements exists, custom built designs can be offered. There are many specially designed Rotary Airlock Valves currently handling abrasive and corrosive materials.

The design is backed by technical assistance from Fouress Engineering India Ltd., Bangalore, who are leaders in Industrial gas tight, damper technology for minimizing air leakage.

If you have a requirement that does not fall in the above range, please consult our marketing department. We can develop it for you.

Remember the following criteria for better Bearing life

  • Corrosion Resistance of mating surfaces
  • Initial lubrication for longer life
  • Protection of Bearing area against any Contamination
  • Low Bearing temperature
  • Finish of mating surfaces
  • Ideal fit H7, P6 Care while assembling the shaft on bearing

Features

  

 

 

 

 

Technical Features

  • High filling efficiency as a result of effective shape of inlet and rotor buckets.
  • Components designed for optimum strength.
  • Close running clearances, for minimizing leakage
  • Outboard bearings protected from dust and heat
  • Designs are available for flow control and metering purposes
  • Differential pressures upto 10,000mm water column (standard version)
  • Maximum product temperature 120oC (standard version)
  • Direct shaft driven design to avoid maintenance prone chains and belts

Optional safety protection flexible shear pin couplings

 

Function & Application

  

 

 

 

Air Leakage :

Air leakage through the rotary valves is of great concern in pneumatic conveying of bulk solids. The magnitude of air loss has to be considered in the system design. Basically, the air loss through the rotary valve has two components.

  • Air leakage through the ‘rotor-housing’ clearance.
  • Air leakage due to ‘fan action’ of the rotor.

Air leakages through the ‘rotor-housing’ clearance is independent of speed of rotation but only depends on the clearance ( which in turn depends on the operating temperature ) and differential pressure across the valve.

Air leakage due to ‘fan-action’ depends on the rotor shape and operating speed.

Hence, total air loss through the valve is additive in nature.

Computerized programs are available for computing air loss data for specific applications as optional.

Information to be Furnished with Enquiry

Product Data :

  • Average particle size (mm)
  • Bulk density (Kg/m3)
  • Material density (Kg/m3)
  • Material temperature ( deg. C )

Special Characteristics :

  • Abrasive
  • Corrosive
  • Hygroscopic
  • Sticky
  • Sluggish or poor flowing

Special Characteristics :

  • Product through put (tones/hr.)
  • Conveying line pressure ( mm WC )
  • Pressure at rotary air lock intake ( mm WC )
  • Available voltage and compressed air at site