IPC 7 English version B04B !A-B04B 15/12

B04-B04B01512

SECTION B – PERFORMING OPERATIONS; TRANSPORTING

B 04

CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES

B 04 B

CENTRIFUGES (high-speed drum mills B02C 19/11; domestic spin driers D06F; analysing, measuring or monitoring physical or chemical properties of samples during centrifuging, see the relevant subclasses for these procedures, e.g. G01N)

Note

This subclass covers 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.

Types of centrifuges; Centrifuges characterised by discharging means

Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles

without inserted separating walls

with inserted separating walls

of cylindrical shape

of conical shape

with discharging outlets in the plane of the maximum diameter of the bowl

with continuous discharge

with periodical discharge

with discharging outlets controlled by the rotational speed of the bowl

controlled by the centrifugal force of an auxiliary liquid

discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl

Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneously sifting or filtering

discharging solid particles from the bowl by means co-axial with the bowl axis and moving to and fro, i.e. push-type centrifuges

discharging solid particles from the bowl by a conveying screw co-axial with the bowl axis and rotating relatively to the bowl

discharging solid particles by vibrating the bowl

discharging solid particles by bowl walls in the form of endless bands

Other centrifuges

Centrifuges consisting of a plurality of separate bowls rotating round an axis situated between the bowls

Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers

Centrifugal counter-current apparatus

Centrifuges for separating predominantly gaseous mixtures

Centrifuges combined with other apparatus, e.g. electrostatic separators; Sets or systems of several centrifuges (B04B 5/12 takes precedence; magnetic or electrostatic separators B03C) [2]

Centrifuges in which rotors other than bowls generate centrifugal effects in stationary containers

Elements; Accessories

Elements of centrifuges (drives B04B 9/00; feeding, charging, or discharging accessories or devices B04B 11/00)

Casings; Lids (shock absorbers, vibration dampers F16F)

Casings facilitating discharge

Safety devices

Rotary bowls (centrifugal casting machines B22D)

Bowls for shaping solids

Inserts, e.g. armouring plates

for separating walls of conical shape

Sieves or filters (filters in general B01D; sieves in general B07B)

formed or coated with sieving or filtering elements (filters in general B01D; sieves in general B07B)

Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls

Electric motor drives

Direct drive

Fluid drive

Arrangement or disposition of transmission gearing

Control of the drive; Speed regulating

Suspending rotary bowls

Balancing rotary bowls (balancing in general G01M)

11/

Feeding, charging, or discharging bowls (B04B 1/00, B04B 3/00, B04B 7/04 take precedence)

11/

Continuous feeding or discharging; Control arrangements therefor

11/

Periodical feeding or discharging; Control arrangements therefor

11/

Base discharge

11/

Arrangement of distributors or collectors in centrifuges

11/

Skimmers or scrapers for discharging

13/

Control arrangements specially designed for centrifuges; Programme control of centrifuges (control arrangements for feed, charge, or discharge B04B 11/00)

15/

Other accessories for centrifuges

15/

for cooling, heating, or heat insulating

15/

for suppressing the formation of foam

15/

for cleaning bowls, filters, sieves, inserts, or the like

15/

for ventilating or producing a vacuum in the centrifuge

15/

for forming a filtering layer in the rotary bowl

15/

for drying or washing the separated solid particles