IE890222L - Method and device for the centrifugal removal of germs from milk - Google Patents
Method and device for the centrifugal removal of germs from milkInfo
- Publication number
- IE890222L IE890222L IE890222A IE22289A IE890222L IE 890222 L IE890222 L IE 890222L IE 890222 A IE890222 A IE 890222A IE 22289 A IE22289 A IE 22289A IE 890222 L IE890222 L IE 890222L
- Authority
- IE
- Ireland
- Prior art keywords
- concentrate
- centrifuge bowl
- bowl
- inlet
- nozzles
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 9
- 244000052616 bacterial pathogen Species 0.000 title claims description 8
- 239000008267 milk Substances 0.000 title abstract description 12
- 235000013336 milk Nutrition 0.000 title abstract description 12
- 210000004080 milk Anatomy 0.000 title abstract description 12
- 239000012141 concentrate Substances 0.000 claims description 46
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000000737 periodic effect Effects 0.000 claims 1
- 241000894006 Bacteria Species 0.000 abstract description 6
- 230000035622 drinking Effects 0.000 description 4
- 241000252141 Semionotiformes Species 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 244000309464 bull Species 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 235000013365 dairy product Nutrition 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23C—DAIRY PRODUCTS, e.g. MILK, BUTTER OR CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF
- A23C7/00—Other dairy technology
- A23C7/04—Removing unwanted substances other than lactose or milk proteins from milk
- A23C7/046—Removing unwanted substances other than lactose or milk proteins from milk by centrifugation without using chemicals, e.g. bactofugation; re-use of bactofugate
-
- 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
-
- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23C—DAIRY PRODUCTS, e.g. MILK, BUTTER OR CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF
- A23C2210/00—Physical treatment of dairy products
- A23C2210/25—Separating and blending
- A23C2210/256—Removal or separation of bacteria, or a fraction containing bacteria, by centrifugation; Bactofugation
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
- A63F2300/00—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game
- A63F2300/10—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game characterized by input arrangements for converting player-generated signals into game device control signals
- A63F2300/1068—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game characterized by input arrangements for converting player-generated signals into game device control signals being specially adapted to detect the point of contact of the player on a surface, e.g. floor mat, touch pad
- A63F2300/1075—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game characterized by input arrangements for converting player-generated signals into game device control signals being specially adapted to detect the point of contact of the player on a surface, e.g. floor mat, touch pad using a touch screen
-
- A—HUMAN NECESSITIES
- A63—SPORTS; GAMES; AMUSEMENTS
- A63F—CARD, BOARD, OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; VIDEO GAMES; GAMES NOT OTHERWISE PROVIDED FOR
- A63F2300/00—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game
- A63F2300/30—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game characterized by output arrangements for receiving control signals generated by the game device
- A63F2300/301—Features of games using an electronically generated display having two or more dimensions, e.g. on a television screen, showing representations related to the game characterized by output arrangements for receiving control signals generated by the game device using an additional display connected to the game console, e.g. on the controller
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Polymers & Plastics (AREA)
- Centrifugal Separators (AREA)
- Dairy Products (AREA)
- Physical Water Treatments (AREA)
Abstract
PURPOSE: To decrease the quantity of generated bacteria condensed object by drawing the condensed object, which is led out through a nozzle, from the central range of a condensed object chamber and returning it to the supply part of a concentric drum. CONSTITUTION: Milk is supplied through a supply part 12 into a centrifugal drum 1 and let flow through a flow-in chamber 2. and a passage 3 into a separate plate setting 4 and the bacteria separated from the milk is moved into a condensed object chamber 5. The partial stream of condensed object having a little bacteria is led out of the condensed object chamber 5 of the centrifugal through a lead-out passage 6 and a nozzle 7 and returned through a lead-out mechanism 9, condensed object flow-out part 10 and return guide 11 into the supply part 12 with no omission. The bacteria integrated on the surrounding wall of the drum is periodically conveyed out of the concentric drum 1 through a carry outlet 14.
[JP1215238A]
Description
6 2 B 8 5
a
Description
The invention refers to a method of centrifugal removal of germs froa milk, in which the milk is fed to the inlet to a centrifuge bowl in the concentrate space in which the germ-containing concentrate spun off is 5 collected, a partial ©mount of which is diverted froa the centrifuge bowl via diversion channels provided with nozzles and the residual concentrate is discharged periodically via discharge openings provided in the bowl shell.
Methods of that kind are known and are preferred for use in the removal 10 of germs from dairy Bilk and milk for drinking. A centrifuge suitable for the performance of the method is known, for example, from the DE-AS 29 13 406.
Via the diversion channels provided with nozzles about 3% of the amount of milk fed to the centrifuge bowl via the inlet is extracted as germ-15 containing concentrate. A further 0.3% of the inlet amount is discharged periodically via the discharge openings from the centrifuge bowl as geria-containing concentrate. The germ concentrate obtained in this way contains inter alisi strains of bacteria which have a negative effect upon the quality of cheese. Both partial flows are therefore coisbised again 20 and subjected to a temperature treatment la a special steriliser., in doing which all strains of bacteria are killed off. The sterilised concentrate can then be rsturaed to the bulls ad.Ik again. But la the cass: of the removal of gersss from silk for drinking it is not allowed to return the sterilised germ concentrate into the drinking mil& again so that the 25 amount of germ concentrate arising in the case of the production of milk for drinking is lost.
The problem of the present Invention is to create a method of centrifugal resofal of gersss froa sal Ik, la which the amount of germ concentrate arising way be considerably r®duced.
This problem is solved by the characterising features of the Main Claim.
3
It has surprisingly proved that the whole of the amount of concentrate diverted via the nozzles, eactracted from a central region of the concentrate space, say be returned into the inlet without thereby disadvan-tageously influencing the quality of the germ-freed aiilk run off. This 5 depends upon the gerssss contained in the concentrate preferably gathering at the periphery of the bowl in the neighbourhood of the discharge openings whilst the remaining constituents of the concentrate, the fat and the protein, take the routa via the diversion channels and the nozzles so that no significant increase in the germ count is effected in the 10 inlet milk through the return. The increase to be expected in the germ count in the garsn-freed milk does not thereby occur.
Advantageous refinements may be learned from the Sub-Claims.
An embodiment of the invention is represented in the drawing and explained in greater detail below. There is shown in:
Figure 1 - a diagraiaisatic representation of the centrifuge bowl; and
Figure 2 - the detail "X" in accordance with Figure 1.
In Figure 1 the centrifuge bowl is designated by 1, its inlet space 2 being connected via channels 3 to the plate insert 4 which bounds the concentrate space 5 radially inwards. From the concentrate space 5 di-20 version channels 6 which are provided with nozzles 7, lead into a paring chamber 8 in which tSsere is a paring member Q the concentrate outlet 10 from which is connected via a return lead 11 to the inlet 12 which opens into the inlet space 2 in the centrifuge bowl 1. Discharge openings 14 which are to be opened by a sleeve valve 13 lead from the periphery of 25 the bowl into Si collector 15 for the germ concentrate. In the return lead 11 a regulating sesaber 16 is provided for setting the amount of the returning germ concentrate. The diversion channels 6 are forssd between the bowl cover 17 and a diverf.sr plate 18 which is provided at a distance "A'" from it in the centrifuge bowl 1 and provided with ribs 19.
The asilk froxa which the germs are to be removed is fed to the centrifuge bowl via the bypass 12 and arrives via the inlet space 2 and the channels 3 in the plate insert 4 in which the germs are separated from the milk and travel to the concentrate space 5.
A partial flow of concentrate low in gersgs is constant 137 led out of the concentrate space 5 in the centrifuge bowl via the diversion channels 6 and the nossles 7 and the paring as saber 9, the concentrate outlet 10 sad the return lead 11 back into the inlet 12 to the centrifuge bowl 1. The germs collecting at the periphery of the bowl are from tijsa to time discharged from the centrifuge bowl 1 via the discharge openings 14. The germ-freed milk f 1 ov»s via the channels 20 into the paring chamber 21 and is then led on through the paring Eessbar 22 to the outlet 23.
The diversion channels 5 provided with nozzles 7 leave from a region of the concentrate space 5 which is central, referred to its radial extent. Concentrate particularly low in germs is thereby extracted from the concentrate space 5 so that the risk of an increase in the germ count in the inlet 12 to the centrifuge bowl 1 is avoided.
The clearance "A" between the bowl cover 17 and the diverter plate 18 is so chosen that, at the resultant speed of flow of the gera-containiag concentrate in the diversion channels 5 an additional separation of gerns is effected in the latter. Because of the coriolis forces acting is the diversion channels 5, independently of the cross-section of the diversion channels 5 an adequate clearance is necessary. Good results have been achieved if the clearance "A" was so chosen that for the individual diversion channel Q a throughput capacity of about 15 litres par hour per am of the clearance "A" resulted. If, e.g., 20,000 litres per hour of gars-containing mill; is fed to the centrifuge bowl, 5% of which is extracted as geraa-coataining concentrate via diversion channels 6 formed by eight ribs 19, there results per diversion channel 6 a throughput capacity of
,000 1/h x 0.05 t 8 = 125 1/h
If this value is divided by the 15 1/h per mm of the clearance "A" which is being striven for, the cleareace "A" is calculated at 8.33 mm.
Through the regulating member 16 in the return lead 11 the amount of concentrate to be extracted via the diversion channels say be easily sat.
In order to keep small the ajaouat of gars-containing concentrates which arises, the amount of concentrate discharged via the discharge openings 14 should amount to a saxiiaum of 0.4 to 0.6 % of the inlet amount.
In accordance with Figure cover 17 End the diverter fine separation of gerxss.
2 plates 24 may be provided plate 18 in order to effect between the bowl a still better
Claims (8)
1. A method of centrifugal removal of germs from sailk, in which the snilfe is fad to the inlet to a centrifuge bowl in the concentrate space la which the gerir-containing concentrate spun off is collected, a partial assount of which is diverted from the centrifuge bowl via diversion channels provided with aosslas and the residual concentrate is discharged periodically viss discharge openings provided in the bowl shell, characterized la that the concentrate diverted via the nozzles is extracted xroa a central region of the concentrate space and returned to the inlet to the centrifuge bowl, the ©mount of concentrate extracted via the nozzles amounting to a ssaximutt of 1 to 10 % and the amount of concentrate discharged via the discharge openings from the centrifuge bowl amounting to 0.1 to 1.0 % of the amount of sal Ik being fed via the inlet to the centrifuge bowl.
2. A method as in Claim 1, characterized ia that the asaount of concentrate,extracted via the nozzles amounts to 4 to 6 % and the asaount of concentrate discharged via the discharge openings from the centrifuge bowl amounts to 0.4 to 0.6 % of the amount of silk being fed via the inlet to the centrifuge bowl.
3. A centrifuge bowl for the performance of the method as in Claisa 1, where the centrifuge bowl is provided with an inlet and a plate insert which bounds a concentrate space radially inwards and frosa which start diversion channels provided with nozzles as well as discharge openings for the periodic discharge of concentrate aad the nozzles open into a paring chamber in which a paring member is provided for the conveyance of the concentrate low in gerxss which is extracted via the nozzles, into a concentrate outlet, characterised in that the concentrate outlet is connected via a return lead to the inlet to the centrifuge bowl arid the diversion channels start froa the region of the concentrate space, which is central referred to its radial extent.
4. I centrifuge bowl as In Claia 3, characterized in that a regulating seaber is provided in the return lead.
5. 1 centrifuge bowl as in Claim 3 or 4. characterized in that the workisg channels are foraed by ribs which are arranged between the bowl cover and a diverter plate provided at a clearance ■A" from It In the centrifuge bowl.
Q. A centrifuge bowl as is Clais 5, characterized ia that between the bowl cover and the diverter plate plates are provided.
7. A method according to claim 1, substantially as hereinbefore described with reference to the•accompanying drawings.
8. A centrifuge bowl according to claim 5, substantially as hereinbefore described with reference to and as illustrated in the accompanying drawings. F. E. KELLY & CO., AGENTS FOR THE APPLICANTS.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3802305A DE3802305C1 (en) | 1988-01-27 | 1988-01-27 | Process and apparatus for the centrifugal removal of bacteria from milk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IE890222L true IE890222L (en) | 1989-07-27 |
| IE62885B1 IE62885B1 (en) | 1995-03-08 |
Family
ID=6346056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IE22289A IE62885B1 (en) | 1988-01-27 | 1989-01-25 | Method and device for the centrifugal removal of germs from milk |
Country Status (11)
| Country | Link |
|---|---|
| JP (1) | JPH01215238A (en) |
| AR (1) | AR241624A1 (en) |
| AT (1) | AT396049B (en) |
| BR (1) | BR8900326A (en) |
| CH (1) | CH675667A5 (en) |
| DE (1) | DE3802305C1 (en) |
| DK (1) | DK175463B1 (en) |
| FR (1) | FR2626143B1 (en) |
| IE (1) | IE62885B1 (en) |
| IT (1) | IT1224035B (en) |
| NL (1) | NL188202C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4040294C2 (en) * | 1990-12-17 | 1994-06-16 | Westfalia Separator Ag | Self-draining centrifugal drum for sterilizing milk |
| DK169510B1 (en) * | 1993-05-13 | 1994-11-14 | Apv Pasilac As | Plant and method of treating milk |
| DE4322415C2 (en) * | 1993-07-06 | 1996-11-28 | Westfalia Separator Ag | Centrifugal drum to concentrate suspended solids |
| DE19503065C1 (en) * | 1995-02-01 | 1995-11-30 | Westfalia Separator Ag | Centrifugal sterilising of milk with minimised waste |
| DE19540031C1 (en) * | 1995-10-27 | 1997-03-13 | Westfalia Separator Ag | Centrifuge drum for concentrating solids with outlets to stripping chamber |
| DE19955178B4 (en) * | 1999-11-16 | 2004-12-23 | Tetra Pak Processing Gmbh | Process and plant for the treatment of centrifugal sediment from separators |
| DE10135317A1 (en) * | 2001-07-19 | 2003-01-30 | Bayer Ag | Deflection ring for a self-discharging centrifuge |
| DE102010037550A1 (en) * | 2009-09-16 | 2011-03-17 | Gea Westfalia Separator Gmbh | Process for producing longer-lasting fresh milk |
| BR112014010890A2 (en) * | 2011-11-07 | 2017-05-02 | Tetra Laval Holdings & Finance | apparatus and method for producing skimmed milk dairy raw material |
| DK2777389T3 (en) * | 2011-11-07 | 2017-01-09 | Tetra Laval Holdings & Finance | PROCEDURE FOR THE PREPARATION AND APPARATUS FOR THE PREPARATION OF SUBSTANTIAL MILK FOR CHEESE |
| WO2019120730A1 (en) * | 2017-12-19 | 2019-06-27 | Tetra Laval Holdings & Finance S.A. | A separator and a method for separating milk |
| KR102296235B1 (en) * | 2021-04-22 | 2021-08-31 | 주식회사 삼공사 | Thin Disc Stack Centrifugal Oil Mist Separator |
| CN116764824B (en) * | 2023-08-25 | 2023-11-07 | 山东万佳食品有限公司 | Centrifuge for monosodium glutamate production |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB307933A (en) * | 1928-03-17 | 1929-10-17 | Separator Ab | Improvements in or relating to the centrifugal cleaning of liquids |
| US3217982A (en) * | 1958-10-17 | 1965-11-16 | Westfalia Separator Ag | Apparatus for the sterilization of liquids |
| NL128342C (en) * | 1966-11-22 | |||
| DE2913406B1 (en) * | 1979-04-04 | 1980-08-28 | Westfalia Separator Ag | Centrifugal drum with vertical axis of rotation for concentration of suspensions |
| DE3314859A1 (en) * | 1983-04-23 | 1984-10-25 | Westfalia Separator Ag, 4740 Oelde | METHOD AND DEVICE FOR CENTRIFUGAL CLEANING OF USED MINERAL OILS |
| DE3601814A1 (en) * | 1986-01-22 | 1987-07-23 | Westfalia Separator Ag | METHOD AND DEVICE FOR SEPARATING TWO LIQUID PHASES BY MEANS OF A CENTRIFUGE |
| DE3620548A1 (en) * | 1986-06-19 | 1987-12-23 | Westfalia Separator Ag | METHOD AND DEVICE FOR PRODUCING CITRUS JUICES WITH A LOW REMAINING PUMP |
| SE456801B (en) * | 1987-03-19 | 1988-11-07 | Alfa Laval Separation Ab | OUTPUT DEVICE BY CENTRIFUGAL SEPARATOR |
-
1988
- 1988-01-27 DE DE3802305A patent/DE3802305C1/en not_active Expired
- 1988-11-25 AT AT0290488A patent/AT396049B/en not_active IP Right Cessation
- 1988-12-05 DK DK678188A patent/DK175463B1/en not_active IP Right Cessation
- 1988-12-20 CH CH4702/88A patent/CH675667A5/de not_active IP Right Cessation
- 1988-12-27 IT IT68157/88A patent/IT1224035B/en active
- 1988-12-28 AR AR88312869A patent/AR241624A1/en active
-
1989
- 1989-01-13 FR FR8900364A patent/FR2626143B1/en not_active Expired - Lifetime
- 1989-01-24 NL NL8900171A patent/NL188202C/en not_active IP Right Cessation
- 1989-01-25 IE IE22289A patent/IE62885B1/en not_active IP Right Cessation
- 1989-01-26 BR BR898900326A patent/BR8900326A/en not_active IP Right Cessation
- 1989-01-26 JP JP1015194A patent/JPH01215238A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| AR241624A1 (en) | 1992-10-30 |
| IE62885B1 (en) | 1995-03-08 |
| IT1224035B (en) | 1990-09-26 |
| DK175463B1 (en) | 2004-11-01 |
| ATA290488A (en) | 1992-10-15 |
| AT396049B (en) | 1993-05-25 |
| IT8868157A0 (en) | 1988-12-27 |
| NL8900171A (en) | 1989-08-16 |
| FR2626143A1 (en) | 1989-07-28 |
| NL188202B (en) | 1991-12-02 |
| NL188202C (en) | 1994-05-16 |
| DK678188A (en) | 1989-07-28 |
| FR2626143B1 (en) | 1992-12-31 |
| CH675667A5 (en) | 1990-10-31 |
| JPH0412933B2 (en) | 1992-03-06 |
| DE3802305C1 (en) | 1989-10-05 |
| BR8900326A (en) | 1989-09-19 |
| DK678188D0 (en) | 1988-12-05 |
| JPH01215238A (en) | 1989-08-29 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MK9A | Patent expired |