# US 2010/0167901 A1 · Centrifugal separator and a liquid phase discharge port member > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0167901 A1 - Document ID: US20100167901A1 - Status: Published application - Kind: A1 - Application number: 12/599,106 - Filed: 2008-05-08 - Published: 2010-07-01 - Earliest claimed: 2007-05-09 - Assignees: Alfa Laval Corporate AB - Inventors: Bent Madsen; Klaus Dircks - Web page: https://patentgrep.com/patent/US20100167901A1 ## CPC - B04B 11/00: Feeding, charging, or discharging bowls (B04B1/00, B04B3/00, B04B7/04 take precedence) - B04B 1/20: discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl - B04B 11/02: Continuous feeding or discharging; Control arrangements therefor - B04B 2001/2075: {with means for recovering the energy of the outflowing liquid} - B04B 2001/2083: {Configuration of liquid outlets} - B04B: CENTRIFUGES (high-speed drum mills B02C19/11; 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) ## Abstract A centrifugal separator (1) comprises a bowl (2) rotating in use around an axis of rotation (5). The axis of rotation extends in a longitudinal direction of said bowl, and a radial direction (5a) extends perpendicular to the longitudinal direction. A base plate (6) is provided at one longitudinal end of the bowl, said base plate having an internal side (7) and an external side (8), an outlet opening (9) being provided in the base plate. A casing (33) is projecting at the outlet opening on the external side of said base plate, said casing comprising a casing side (34), a normal (35) to said casing side extending at an acute angle (13) relative to a circumferential direction of the bowl at said casing and a discharge opening (36) is provided in said casing side. The discharge opening is radially outwardly limited by a weir (45) with an overflow edge (39) and said discharge opening extending radially inwardly to a position above a highest intended level of liquid in the bowl. ## Claims ### Claim at position 1 1-14. (canceled) ### Claim 15 A centrifugal separator comprising: a bowl rotatable about an axis of rotation, said axis of rotation extending in a longitudinal direction of said bowl, a base plate provided at one longitudinal end of said bowl, said base plate having an internal side and an external side; an outlet opening provided in said base plate; a casing projecting at the outlet opening on the external side of said base plate, said casing comprising a casing side, substantially normal to said casing side extending at an acute angle relative to a circumferential direction of the bowl at said casing; a discharge opening provided in said casing side; and wherein said discharge opening is radially outwardly limited by a weir with an overflow edge and said discharge opening extending radially inwardly to a position above a highest intended level of liquid in the bowl. ### Claim 16 (depends on 15) A centrifugal separator as claimed in claim 15, wherein said acute angle is between about 0° and about 60°. ### Claim 17 (depends on 15) A centrifugal separator as claimed in claim 15, wherein said weir comprises a hole. ### Claim 18 (depends on 15) A centrifugal separator as claimed in claim 15, wherein said weir is provided by an exchangeable weir plate. ### Claim 19 (depends on 18) A centrifugal separator as claimed in claim 18, wherein grooves provided at said discharge opening are adapted to receive said weir plate. ### Claim 20 (depends on 15) A centrifugal separator as claimed in claim 15, wherein said casing comprises a curved wall extending from the base plate to a remote side of said casing side, a side of the discharge opening being substantially flush with the curved wall. ### Claim 21 (depends on 20) A centrifugal separator as claimed in claim 20, wherein said curved wall and said casing side meet at substantially right angles. ### Claim 22 A liquid phase discharge port member adapted to be placed over an outlet opening of a bowl of a centrifugal separator, comprising: a flange; an inlet opening provided in said flange; a casing projecting at the inlet opening on a side of said flange, said casing comprising a casing side, substantially normal to said casing side extending at an acute angle relative to said flange; a discharge opening provided in said casing side; and wherein said discharge opening is limited by a weir with an overflow edge. ### Claim 23 (depends on 22) A liquid phase discharge port member as claimed in claim 22, wherein said acute angle is in the range between about 0° and about 60°. ### Claim 24 (depends on 22) A liquid phase discharge port member as claimed in claim 22, wherein said weir comprises a hole. ### Claim 25 (depends on 22) A liquid phase discharge port member as claimed in claim 22, wherein said weir is provided by an exchangeable weir plate. ### Claim 26 (depends on 25) A liquid phase discharge port member as claimed in claim 25, wherein grooves provided at said discharge opening are adapted to receive said weir plate. ### Claim 27 (depends on 22) A liquid phase discharge port member as claimed in claim 22, wherein said casing comprises a curved wall extending from the flange to a remote side of said casing side, a side of the discharge opening being flush with the curved wall. ### Claim 28 (depends on 27) A liquid phase discharge port member as claimed in claim 27, wherein said curved wall and said casing side meet at substantially right angles. ### Claim 29 (depends on 15) A centrifugal separator as claimed in claim 15, wherein said acute angle is in the range between about 5° and about 35°. ### Claim 30 (depends on 15) A centrifugal separator as claimed in claim 15, wherein said acute angle is in the range between about 15° and about 30°. ### Claim 31 (depends on 22) A liquid phase discharge port member as claimed in claim 22, wherein said acute angle is in the range between about 5° and about 35°. ### Claim 32 (depends on 22) A liquid phase discharge port member as claimed in claim 22, wherein said acute angle is in the range between about 15° and about 30°.