B
SECTION B — PERFORMING OPERATIONS
  
SEPARATING AND MIXING
 B04
CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES (using centrifugal force for the separation of particles from liquids or gases, in general B01D, e.g. B01D 21/26, B01D 43/00, B01D 45/12)
 B04B
CENTRIFUGES (high-speed drum mills B02C 19/11; domestic spin driers D06F)
 B04B

Note(s)

This sub-class deals with machines or apparatus for separating, mixing, drying, extracting, purifying, or like treating in which centrifugal effects are generated by rotary bowls or other rotors. Where such machines or apparatus involve pumping effects, such effects must be incidental or subsidiary to the treating.

 B04B 1/00 - 
B04B 5/00
Types of centrifuges; Centrifuges characterised by discharging means
 B04B 1/00
Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
 B04B 1/02
·  without inserted separating walls
 B04B 1/04
·  with inserted separating walls
 B04B 1/06
·  ·  of cylindrical shape
 B04B 1/08
·  ·  of conical shape
 B04B 1/10
·  with discharging outlets in the plane of the maximum diameter of the bowl
 B04B 1/12
·  ·  with continuous discharge
 B04B 1/14
·  ·  with periodical discharge
 B04B 1/16
·  ·  ·  with discharging outlets controlled by the rotational speed of the bowl
 B04B 1/18
·  ·  ·  ·  controlled by the centrifugal force of an auxiliary liquid
 B04B 1/20
·  discharging solid particles from the bowl by a conveying screw co-axial with the bowl axis and rotating relatively to the bowl
 B04B 3/00
Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneously sifting or filtering
 B04B 3/02
·  discharging solid particles from the bowl by means co-axial with the bowl axis and moving to and fro, i.e. push-type centrifuges
 B04B 3/04
·  discharging solid particles from the bowl by a conveying screw co-axial with the bowl axis and rotating relatively to the bowl
 B04B 3/06
·  discharging solid particles by vibrating the bowl
 B04B 3/08
·  discharging solid particles by bowl walls in the form of endless bands
 B04B 5/00
Other centrifuges
 B04B 5/02
·  Centrifuges consisting of a plurality of separate bowls rotating round an axis situated between the bowls
 B04B 5/04
·  Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers
 B04B 5/06
·  Centrifugal counter-current apparatus
 B04B 5/08
·  Centrifuges for separating predominantly gaseous mixtures
 B04B 5/10
·  Centrifuges combined with other apparatus, e.g. electrostatic separators; Sets or systems of several centrifuges (B04B 5/12 takes precedence)
 B04B 5/12
·  Centrifuges in which rotors other than bowls generate centrifugal effects in stationary containers
 B04B 7/00 - 
B04B 15/00
Elements; Accessories
 B04B 7/00
Elements of centrifuges (drives B04B 9/00; feeding, charging, or discharging appurtenances or devices B04B 11/00)
 B04B 7/02
·  Casings; Lids (shock absorbers, vibration dampers F16F)
 B04B 7/04
·  ·  Casings facilitating discharge
 B04B 7/06
·  ·  Safety devices
 B04B 7/08
·  Rotary bowls (centrifugal casting machines B22D)
 B04B 7/10
·  ·  Bowls for shaping solids
 B04B 7/12
·  ·  Inserts, e.g. armouring plates
 B04B 7/14
·  ·  ·  for separating walls of conical shape
 B04B 7/16
·  ·  ·  Sieves or filters (filters in general B01D; sieves in general B07B)
 B04B 7/18
·  ·  formed or coated with sieving or filtering elements (filters in general B01D; sieves in general B07B)
 B04B 9/00
Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
 B04B 9/02
·  Electric motor drives
 B04B 9/04
·  ·  Direct drive
 B04B 9/06
·  Fluid drive
 B04B 9/08
·  Arrangement or disposition of transmission gearing
 B04B 9/10
·  Control of the drive; Speed regulating
 B04B 9/12
·  Suspending rotary bowls
 B04B 9/14
·  Balancing rotary bowls (balancing per se G01M)
 B04B 11/00
Feeding, charging, or discharging bowls (B04B 1/00, B04B 3/00, B04B 7/04 take precedence)
 B04B 11/02
·  Continuous feeding or discharging; Control arrangements therefor
 B04B 11/04
·  Periodical feeding or discharging; Control arrangements therefor
 B04B 11/05
·  ·  Base discharge
 B04B 11/06
·  Arrangement of distributers and collectors in centrifuges
 B04B 11/08
·  Skimmers and scrapers for discharging
 B04B 13/00
Control arrangements specially designed for centrifuges; Programme control of centrifuges (control arrangements for feed, charge, or discharge B04B 11/00)
 B04B 15/00
Other accessories for centrifuges
 B04B 15/02
·  for cooling, heating, or heat insulating
 B04B 15/04
·  for suppressing the formation of foam
 B04B 15/06
·  for cleaning bowls, filters, sieves, inserts, etc.
 B04B 15/08
·  for ventilating or producing a vacuum in the centrifuge
 B04B 15/10
·  for forming a filtering layer in the rotary bowl
 B04B 15/12
·  for drying or washing the separated solid particles