EP3448577A1 - Outlet nozzle for a centrifugal drum, centrifugal drum and assembly tool - Google Patents
Outlet nozzle for a centrifugal drum, centrifugal drum and assembly toolInfo
- Publication number
- EP3448577A1 EP3448577A1 EP17716815.0A EP17716815A EP3448577A1 EP 3448577 A1 EP3448577 A1 EP 3448577A1 EP 17716815 A EP17716815 A EP 17716815A EP 3448577 A1 EP3448577 A1 EP 3448577A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- outlet
- nozzle
- outlet nozzle
- drum
- nozzle body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/10—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
- B05B1/02—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to produce a jet, spray, or other discharge of particular shape or nature, e.g. in single drops, or having an outlet of particular shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/10—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl
- B04B1/12—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with discharging outlets in the plane of the maximum diameter of the bowl with continuous discharge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B1/00—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
- B04B1/04—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls
- B04B1/08—Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles with inserted separating walls of conical shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04B—CENTRIFUGES
- B04B11/00—Feeding, charging, or discharging bowls
- B04B11/02—Continuous feeding or discharging; Control arrangements therefor
Definitions
- the invention relates to an outlet nozzle for a centrifuge drum according to the preamble of claim 1, to a centrifuge drum with such an outlet nozzle and to an assembly tool for mounting an outlet nozzle in an opening of the centrifuge drum.
- the diameter of the inlet opening of the outlet nozzle in the region of the nozzle body is either the same size as the diameter of the outlet channel or it is at most 50 percent larger or 50 percent smaller than the diameter of the outlet channel.
- the inlet space widens steadily up to a largest diameter.
- the diameter of the outlet channel in the nozzle stone initially tapers to a constriction and then widens conically in one of the variants of DE 195 27 039 C1 by an angle of at least 5 °.
- Claim 1 provides an outlet nozzle for centrifuge drums having a nozzle body having at least one cylindrical portion and an extension, wherein in the nozzle body an inlet channel and an outlet channel oriented at an angle thereto are formed and wherein the lug is provided with a torque transfer contour for engaging a tool with a complementarily shaped tool torque transfer contour for rotationally mounting and releasing the nozzle body in an opening of a rotatable centrifuge drum, the lug having a polygonal, in particular a rectangular cross section which is smaller than the cross section of the cylindrical portion, and wherein the approach starting from the polygonal, in particular rectangular cross-section of rounded surfaces with a radius having a size of more than 1, 5 mm in the cylindrical a small portion of the nozzle body passes.
- This outlet nozzle is easy to assemble and disassemble and has a torque transmission contour that is prone to contamination or buildup and is easy to clean hygienically.
- the approach passes over rounded surfaces with a radius of a size of more than 2.0 mm in the cylindrical portion of the nozzle body.
- the inlet channel and the outlet channel are aligned / formed at an obtuse angle to one another.
- an outlet end of the outlet channel is formed in the region of the projection, wherein it is further preferred that the outlet end of the outlet channel be in an outer Radial region, in particular the outer half of the neck is formed.
- the invention also advantageously provides a centrifuge drum having a drum wall having a plurality of circumferentially distributed apertures for insertion of outlet nozzles formed according to any one of claims 1 to 5.
- the invention further provides a tool for rotatably mounting an outlet nozzle, in particular an outlet nozzle according to one of the preceding claims, in an opening of a drum wall of a centrifuge drum, having a drum wall having a plurality of circumferentially distributed openings for inserting outlet nozzles, wherein the tool Socket with a torque transmission contour and a axially completely or partially sliding over the socket key sleeve. Because with this tool, the nozzle is particularly easy to assemble and disassemble.
- the diameter of the sleeve is dimensioned so that the outlet nozzle in the sleeve in whole or in sections can be inserted and that the outlet nozzle is held in the sleeve inserted in the state in this clamping.
- the outlet nozzle is held captive in a simple manner during assembly. According to an advantageous variant, this can easily be achieved if the outlet nozzle in the state inserted into the sleeve is clamped in the region of a sealing ring.
- FIG. 1 shows in a) a section through a radially outer portion of a centrifuge drum with an outlet nozzle, wherein the axis of rotation extends in the sectional plane and in b) a section through the portion of a), wherein the axis of rotation is perpendicular to the sectional plane.
- FIG. 2a shows the arrangement from FIG. 1 with an assembly tool;
- Fig. 3 is a schematic representation of a centrifuge drum, in which the outlet nozzles according to the invention can be used.
- Fig. 3 shows a double-conical centrifuge drum formed as a separator drum 100 with a drum wall 110 which is preferably for continuous operation - i. the continuous and non-batch processing of a product - is designed.
- the separator drum 100 has a vertical axis of rotation D.
- a separating disk stack 300 consisting of conical separating discs 400 is arranged in the interior of the drum - also called the centrifuging chamber 200.
- the separation plates 400 are arranged on a distributor shaft 600.
- An inlet pipe 500 serves to feed a product to be processed into distribution channels 700 and from these into the centrifugal space 200.
- the product is clarified by solids and optionally optionally a separation into two or more liquid phases of different density.
- the at least one liquid phase serve one or more processes 900 for liquid phases, which may be provided, for example with peeling discs.
- the solids are ejected outwardly from the centrifuge drum 100 by circumferentially distributed, radially extending openings 800 preferably in the area of the largest radius / circumference of the centrifuge drum.
- an outlet nozzle 1 is inserted, preferably screwed, into the cylindrical openings 800 of the drum wall 1 10 (FIGS. 1 a, 1 b).
- the openings 800 are substantially radially aligned in the drum wall 1 10.
- the outlet nozzle 1 has a nozzle body 2.
- the nozzle body 2 is substantially cylindrical in shape.
- an inlet channel 3 and an outlet channel 4 which extends at an obtuse angle to the inlet channel 3 at an angle 91 ° ⁇ alpha ⁇ 179 ° are formed.
- a nozzle block - see the above-mentioned prior art - is not provided here in the nozzle body 2, but is optionally conceivable.
- the outlet channel 4 is directed "backwards" in such a way that, in an energy balance, the energy loss of the rotating system "centrifuge drum 100" by the product output is lower than it would be if the solid from the centrifuge drum 100 were discharged radially.
- the inlet channel 3 has an inlet opening 3a towards the interior of the drum, a short, conically tapered (funnel-like) section 3b adjoining thereto, an adjoining longer cylindrical section 3c and a rounded channel end 3d with a radius R.
- the outlet channel 4 has an inlet opening 4a which adjoins the inlet channel 3 at the channel end 3d, here in the radius R of the channel end 3d, an adjoining cylindrical section 4b and an opening 4c which is spaced therefrom in the outlet direction A by an axial distance.
- the inlet channel 3 and the outlet channel 4 each have a constant diameter over most of their axial length.
- the diameter of the outlet channel 4 is smaller, in particular smaller than the diameter of the inlet channel 3 by more than 50%.
- the outlet channel 4 is shorter axially, in particular shorter by more than 50%, than the inlet channel 3.
- the nozzle body 2 is preferably a component which is rotationally symmetrical except for a torque transmission contour 5. In this way it is easy to produce. It has radially inside a portion 2a smaller outer diameter and an adjoining portion 2b larger outer diameter.
- the torque transmission contour 5 forms a projection 2c, which connects radially outward to the cylindrical portion 2b.
- Two or more seals 6 a, 6 b - in particular each formed as a sealing ring - on the outer circumference of the nozzle body 2 seal the outlet nozzle 1 against the inner periphery of the opening 800 in the drum wall 1 10. These are positioned on the outlet nozzle so that only short and easily cleanable gaps form with the outlet nozzle mounted to the outer contour of the drum wall 110 or to the intermediate space 960.
- seals 6a, 6b are preferably mounted less than 5 mm or even less than 3 mm apart from the ends of the cylindrical sections 2b, 2a.
- a thread 7 on the outer circumference of the nozzle body 2 also allows a screwing of the respective nozzle body 2 in the drum wall or in the openings 800 in the drum wall 1 10, which has a corresponding thread.
- a bayonet closure or similar closures with rotating opening or closing movement can also be used here.
- the thread 7 is formed on the outside of the larger diameter portion 2b.
- the portion 2b of larger diameter is screwed into the separator drum 100 or in the drum wall 1 10 in the opening 800.
- the smaller diameter portions 2a extend into spaces or openings 960 in inserts 950 in the interior of the separator drum 100 which are shaped to direct a solid phase such as a funnel to the outlet nozzles 1.
- the torque transmission contour 5 is formed at the one end of the substantially cylindrical nozzle body 2.
- the contour 5 In the state screwed into the separator drum 100, the contour 5 is accessible from the outside and thus enables the outlet nozzle to be screwed into the opening 800 of the separator drum 100 and the outlet nozzle 1 to be unscrewed from the separator drum 100. However, it is completely screwed into the opening 800 Condition not over the outer circumference of the separator drum 100 radially outward, but is in the outer region of the opening (bore) 800 accessible.
- each of the openings 800 each have an oblique recess, in particular a cutout 15, formed in the drum wall 1 10.
- These recesses are designed so that the product in operation - ie while the drum rotates at an operating speed - obliquely backwards along the recess 1 15 is ejected without touching the recess in the drum wall 1 10.
- the torque transmission contour 5 has a non-cylindrical geometry.
- substantially flattened rectangular projection 2c which adjoins the cylindrical portion 2b.
- quasi circular chords have been cut out of an imaginary cylinder geometry at the ends, whose straight base sides or long sides 5a, 5b are parallel to each other. These bases form the longer sides of the polygonal contour or in this case the rectangular contour of the projection 2c.
- the other two sides are the short sides 5c and 5d of the rectangular contour of the neck 2c.
- rounded surfaces are formed, which widen outwardly to the cylindrical portion 2b. It is preferably provided that the projection, starting from the polygonal, in particular rectangular, cross section over rounded surfaces having a radius R1 greater than 1.0 mm, in particular more than 2 mm, merges into the cylindrical section of the nozzle body.
- the radii R1 are here advantageously dimensioned such that they are as large as the maximum distance of the parallel base sides 5a, 5b of the torque transmission contour 5 to the outer periphery of the cylindrical portion 2b, which has a larger cross-section than the projection 2c.
- a transition region to the torque transmitting portion 5 is provided with large or outwardly opening radii R1.
- radii R1 are less susceptible to soiling or adhesion than undercuts or the like.
- a torque transmission contour 5 which hardly tilts or does not tend to become soiled or sticky is created, which is easy to clean hygienically.
- One of the short sides - the short side 5d - of the torque transmission contour 5 is formed as an inclined surface.
- the oblique surface is formed on the short side 5d directed against the direction of rotation U during operation of the separator drum 100 during operation.
- the opening 4c of the outlet channel 4 lies in the region of this inclined surface. Preferably, it lies in the radially outer half of the inclined surface or the short side 5d.
- the inclined surface 5 d is further preferably aligned perpendicular to the axial direction of the outlet channel 3.
- the assembly tool 10 For assembly and disassembly of the outlet nozzle 1 is an assembly tool 10 (see Fig. 2a).
- the assembly tool 10 is designed in two pieces. It has a rotatable socket wrench 1 1 and a plug-in over the socket key 1 1 12th
- the socket wrench 1 1 of the assembly tool 10 has a torque transmission contour 13 which is complementary to the torque transmission contour 5 of the outlet nozzle 1 and which is designed here as a slot.
- the socket wrench can be placed in the region of the slot on the torque transmission contour 5.
- the slot is shaped such that it can be placed on the complementary torque transmission contour 5 of the outlet nozzle in such a form-fitting manner that screwing in and out of the outlet nozzle 5 into the outlet opening 800 and out of the outlet opening 800 can be achieved.
- a kind of rod or shaft 14 connects, at the end facing away from the torque transmission contour 13 turn a handle or approach for another tool is provided (not shown here) to turn the socket wrench 1 1 can.
- the sleeve 12 is pushed over the socket wrench 1 1, the inside diameter of which is dimensioned such that the outlet nozzle 1 at the Sealing ring 6b in the end of the tube is captive clamped.
- the sleeve 12 with the clamped outlet nozzle 1 can be guided for installation until shortly before the opening 800 of the drum wall 110.
- the nozzle body 2 is screwed into the outlet opening 800 with the socket wrench.
- the sleeve 12 and the outlet port 800 may have complementary tapered insertion portions configured to allow the end of the sleeve 12 to engage the end of the outlet port 800.
- the end of the sleeve 12 is inserted into the radially outer end of the outlet opening 800 (preferably provided with a short funnel geometry facilitating insertion of the sleeve 12 at the end) in the drum wall 110 and there with a predetermined force held. Then the outlet nozzle 1 is unscrewed with the socket wrench 1 1 until, when unscrewing the sealing ring 6b, the outlet nozzle 1 slides into the sleeve 12, since the sleeve 12 is pressed into the opening 800 (or to the opening 800) with a predetermined force , Now the outlet nozzle 1 can be unscrewed completely out of the outlet opening and finally removed or taken out in the tube 12 from the space surrounding the centrifuge drum 100. In this way, the assembly and disassembly of the outlet nozzle 1 into the centrifuge drum 100 are structurally simple.
Landscapes
- Centrifugal Separators (AREA)
- Nozzles (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL17716815T PL3448577T3 (en) | 2016-04-29 | 2017-04-04 | Outlet nozzle for a centrifugal drum, centrifugal drum and assembly tool |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016108057.8A DE102016108057B4 (en) | 2016-04-29 | 2016-04-29 | Outlet nozzle for a centrifuge drum, centrifuge drum and assembly tool |
PCT/EP2017/057947 WO2017186459A1 (en) | 2016-04-29 | 2017-04-04 | Outlet nozzle for a centrifugal drum, centrifugal drum and assembly tool |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3448577A1 true EP3448577A1 (en) | 2019-03-06 |
EP3448577B1 EP3448577B1 (en) | 2020-03-18 |
Family
ID=58536942
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17716815.0A Active EP3448577B1 (en) | 2016-04-29 | 2017-04-04 | Outlet nozzle for a centrifugal drum, centrifugal drum and assembly tool |
Country Status (6)
Country | Link |
---|---|
US (2) | US11020754B2 (en) |
EP (1) | EP3448577B1 (en) |
DE (1) | DE102016108057B4 (en) |
NZ (1) | NZ746115A (en) |
PL (1) | PL3448577T3 (en) |
WO (1) | WO2017186459A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102016108057B4 (en) | 2016-04-29 | 2018-08-02 | Gea Mechanical Equipment Gmbh | Outlet nozzle for a centrifuge drum, centrifuge drum and assembly tool |
DE102018119620A1 (en) * | 2018-08-13 | 2020-02-13 | Flottweg Se | Outlet nozzle for a centrifuge drum, nozzle insert, centrifuge drum, assembly tool and method for assembling an outlet nozzle |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2060239A (en) | 1936-11-10 | Centrifuge construction | ||
US2068520A (en) * | 1933-09-16 | 1937-01-19 | Laval Separator Co De | Centrifugal separator bowl |
US2410313A (en) * | 1944-04-19 | 1946-10-29 | Laval Separator Co De | Centrifugal separating bowl |
US2570164A (en) | 1947-01-02 | 1951-10-02 | Keller Tool Co | Power-operated screw driver |
US2560239A (en) | 1949-06-01 | 1951-07-10 | Chicago Pneumatic Tool Co | Air-line oiler |
US2695748A (en) * | 1952-01-22 | 1954-11-30 | Merco Centrifugal Co | Centrifuge nozzle construction |
DE1105903B (en) | 1958-03-04 | 1961-05-04 | Scharfenbergkupplung Gmbh | Side buffers for rail vehicles, especially for rail link units |
US3075696A (en) * | 1959-05-07 | 1963-01-29 | Sharples Corp | Centrifuge nozzle holders |
US3795362A (en) * | 1972-05-31 | 1974-03-05 | Pennwalt Corp | Centrifuge bowl having an improved nozzle assembly |
ATA93974A (en) * | 1973-03-09 | 1976-08-15 | Westfalia Separator Ag | SHOWER SPIN DRUM WITH FULL PIECES |
DE3922619C1 (en) | 1989-07-10 | 1990-10-04 | Westfalia Separator Ag, 4740 Oelde, De | |
DE4105903C2 (en) | 1991-02-26 | 1994-10-06 | Escher Wyss Gmbh | Solid bowl centrifuge as a cleaner for material suspensions |
DE19527039C5 (en) | 1995-07-25 | 2004-02-26 | Westfalia Separator Ag | Outlet nozzle for centrifuge drums |
US6216959B1 (en) * | 1997-10-17 | 2001-04-17 | Fluid-Quip, Inc. | Nozzle for centrifuge rotors and method of removing same |
US6511005B2 (en) * | 2001-03-30 | 2003-01-28 | Fluid-Quip, Inc. | Bowl centrifuge nozzle |
DE20219551U1 (en) * | 2002-12-16 | 2004-04-29 | Westfalia Separator Ag | Centrifuge, in particular separator, with solids outlet nozzles |
EP1799351B1 (en) * | 2004-09-08 | 2018-01-31 | Alfa Laval Corporate AB | Centrifuge nozzle and method and apparatus for inserting said nozzle into a centrifuge bowl |
DE102006053491A1 (en) * | 2006-11-14 | 2008-05-15 | Westfalia Separator Ag | Centrifuge, in particular separator, with solids outlet nozzles |
DE102012111801A1 (en) | 2012-12-05 | 2014-06-05 | Gea Mechanical Equipment Gmbh | Outlet nozzle for a centrifuge drum |
DE102016108057B4 (en) * | 2016-04-29 | 2018-08-02 | Gea Mechanical Equipment Gmbh | Outlet nozzle for a centrifuge drum, centrifuge drum and assembly tool |
DE102018119620A1 (en) * | 2018-08-13 | 2020-02-13 | Flottweg Se | Outlet nozzle for a centrifuge drum, nozzle insert, centrifuge drum, assembly tool and method for assembling an outlet nozzle |
DE102019131509A1 (en) * | 2019-11-21 | 2021-05-27 | Gea Mechanical Equipment Gmbh | Nozzle monitoring device for a nozzle centrifuge, nozzle centrifuge, and method for monitoring nozzles of a nozzle centrifuge |
-
2016
- 2016-04-29 DE DE102016108057.8A patent/DE102016108057B4/en active Active
-
2017
- 2017-04-04 PL PL17716815T patent/PL3448577T3/en unknown
- 2017-04-04 WO PCT/EP2017/057947 patent/WO2017186459A1/en active Application Filing
- 2017-04-04 US US16/096,072 patent/US11020754B2/en active Active
- 2017-04-04 EP EP17716815.0A patent/EP3448577B1/en active Active
- 2017-04-04 NZ NZ746115A patent/NZ746115A/en unknown
-
2021
- 2021-02-03 US US17/166,511 patent/US11701669B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
PL3448577T3 (en) | 2020-08-24 |
WO2017186459A1 (en) | 2017-11-02 |
EP3448577B1 (en) | 2020-03-18 |
US20210178407A1 (en) | 2021-06-17 |
US11020754B2 (en) | 2021-06-01 |
NZ746115A (en) | 2024-03-22 |
DE102016108057B4 (en) | 2018-08-02 |
US11701669B2 (en) | 2023-07-18 |
US20200023384A1 (en) | 2020-01-23 |
DE102016108057A1 (en) | 2017-11-02 |
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