|  | 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 Fulltext... Hierarchy... Expanded...B01D, e.g. Fulltext... Hierarchy... Expanded...B01D 21/26, Fulltext... Hierarchy... Expanded...B01D 43/00, Fulltext... Hierarchy... Expanded...B01D 45/12)

|  | B04C |
APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES

|  | B04C |
Note(s) This sub-class deals with apparatus for separating, mixing or like treating in which centrifugal effects are generated by free vortex flow, otherwise than by rotary bowls, rotors or curved passages (jet mills Fulltext... Hierarchy... Expanded...B02C 19/06; cyclonic combustion chambers for gas turbines Fulltext... Hierarchy... Expanded...F02C; cyclonic combustion apparatus Fulltext... Hierarchy... Expanded...F23).

|  | B04C 1/00 |
Apparatus in which the main direction of flow follows a flat spiral

|  | B04C 3/00 |
Apparatus in which the axial direction of the vortex remains unchanged

|  | B04C 3/02 |
· | with heating or cooling, e.g. quenching, means

|  | B04C 3/04 |
· | Multiple arrangement thereof

|  | B04C 3/06 |
· | Construction of inlets or outlets to the vortex chamber

|  | B04C 5/00 |
Apparatus in which the axial direction of the vortex is reversed

|  | B04C 5/02 |
· | Construction of inlets by which the vortex flow is generated (fluid dynamics in general Fulltext... Hierarchy... Expanded...F15D)

|  | B04C 5/04 |
· · | Tangential inlets

|  | B04C 5/06 |
· · | Axial inlets

|  | B04C 5/08 |
· | Vortex chamber constructions

|  | B04C 5/081 |
· · | Shapes or dimensions

|  | B04C 5/085 |
· · | with wear-resisting arrangements

|  | B04C 5/087 |
· · | with flexible gas-tight walls

|  | B04C 5/10 |
· · | with perforated walls

|  | B04C 5/103 |
· · | Bodies or members, e.g. bulkheads, guides, in the vortex chamber (cores Fulltext... Hierarchy... Expanded...B04C 5/107)

|  | B04C 5/107 |
· · | Cores; Devices for inducing an air-core in hydrocyclones (forming part of the outlet pipe Fulltext... Hierarchy... Expanded...B04C 5/13)

|  | B04C 5/12 |
· | Construction of the overflow ducting, e.g. diffusing or spiral exits

|  | B04C 5/13 |
· · | formed as a vortex finder and extending into the vortex chamber; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow

|  | B04C 5/14 |
· | Construction of the underflow ducting; Apex constructions; Discharge arrangements

|  | B04C 5/15 |
· · | with swinging flaps or revolving sluices; Sluices; Check-valves

|  | B04C 5/16 |
· · | with variable-size outlets from the underflow ducting

|  | B04C 5/18 |
· · | with auxiliary fluid assisting discharge

|  | B04C 5/181 |
· · | Bulkheads or central bodies in the discharge opening

|  | B04C 5/185 |
· · | Dust collectors

|  | B04C 5/187 |
· · · | forming an integral part of the vortex chamber

|  | B04C 5/20 |
· | with heating or cooling, e.g. quenching, means

|  | B04C 5/22 |
· | with cleaning means

|  | B04C 5/23 |
· · | using liquids

|  | B04C 5/24 |
· | Multiple arrangement thereof

|  | B04C 5/26 |
· · | for series flow

|  | B04C 5/28 |
· · | for parallel flow

|  | B04C 5/30 |
· · | Recirculation constructions in or with cyclones which accomplish a partial recirculation of the medium, e.g. by means of conduits

|  | B04C 7/00 |
Apparatus not provided for in group Fulltext... Hierarchy... Expanded...B04C 1/00, Fulltext... Hierarchy... Expanded...B04C 3/00, or Fulltext... Hierarchy... Expanded...B04C 5/00; Multiple arrangements not provided for in one of groups Fulltext... Hierarchy... Expanded...B04C 1/00, Fulltext... Hierarchy... Expanded...B04C 3/00, and Fulltext... Hierarchy... Expanded...B04C 5/00; Combinations of apparatus covered by two or more of groups Fulltext... Hierarchy... Expanded...B04C 1/00, Fulltext... Hierarchy... Expanded...B04C 3/00, and Fulltext... Hierarchy... Expanded...B04C 5/00

|  | B04C 9/00 |
Combinations with other devices, e.g. fans (combinations with filters Fulltext... Hierarchy... Expanded...B01D 50/00)

|  | B04C 11/00 |
Accessories, e.g. safety or control devices, not otherwise provided for (with electrostatic precipitating arrangements Fulltext... Hierarchy... Expanded...B03C 3/14)