EP1195190B1 - Homogenisierungsventil - Google Patents

Homogenisierungsventil Download PDF

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Publication number
EP1195190B1
EP1195190B1 EP00830652A EP00830652A EP1195190B1 EP 1195190 B1 EP1195190 B1 EP 1195190B1 EP 00830652 A EP00830652 A EP 00830652A EP 00830652 A EP00830652 A EP 00830652A EP 1195190 B1 EP1195190 B1 EP 1195190B1
Authority
EP
European Patent Office
Prior art keywords
valve
outlet
obturator
product
outlet aperture
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.)
Expired - Lifetime
Application number
EP00830652A
Other languages
English (en)
French (fr)
Other versions
EP1195190A1 (de
Inventor
Roberto Catelli
Ercole Barusi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bertoli Srl
Original Assignee
Bertoli Srl
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bertoli Srl filed Critical Bertoli Srl
Priority to AT00830652T priority Critical patent/ATE337083T1/de
Priority to DK00830652T priority patent/DK1195190T3/da
Priority to EP00830652A priority patent/EP1195190B1/de
Priority to ES00830652T priority patent/ES2267488T3/es
Priority to DE60030290T priority patent/DE60030290T2/de
Publication of EP1195190A1 publication Critical patent/EP1195190A1/de
Application granted granted Critical
Publication of EP1195190B1 publication Critical patent/EP1195190B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/44—Mixers in which the components are pressed through slits
    • B01F25/441—Mixers in which the components are pressed through slits characterised by the configuration of the surfaces forming the slits
    • B01F25/4412—Mixers in which the components are pressed through slits characterised by the configuration of the surfaces forming the slits the slits being formed between opposed planar surfaces, e.g. pushed again each other by springs

Definitions

  • the invention relates to a homogenization valve, which can be usefully but not exclusively used for homogenizing milk.
  • Homogenizers have been well-known for some time, and are used in homogenizing emulsions and suspensions. Very briefly, they are constituted by a pump which forces the product to be treated to pass through the narrow passage aperture of a homogenization valve.
  • the homogenization operation of a product for example, milk, consists substantially in the fine sub-division of the fat cells and their homogeneous dispersion throughout the mass of the liquid.
  • the obturator of the valve is subject to high pressure, which tends to close the valve and block the passage of the product through the valve itself.
  • the homogenization of the product is a consequence of various causes among which the acceleration and passage of the product through the narrow valve aperture, an impact against a special ring located at the outlet of the valve, bubble cavitation, with a consequent unleashing of highfrequency vibrations and turbulence in the fluid, which is determined at the outlet of the valve due to the rapid drop in pressure and speed the product is subjected to.
  • the efficiency of a homogenization valve is conditioned, among other factors, by the geometry of the valve itself, which must enable a sufficient product flow rate as well as high acceleration values and a pressure drop in order for the transiting product to be correctly treated. Also, however, the obturator must not be subjected to excessive forces which might lead to problems involving difficulty of regulation of the valve and possible instability thereof.
  • valve illustrated in figure 1 An example of a homogenization valve of known type is represented by the valve illustrated in figure 1.
  • the product which enters at I under pressure, is forced to pass through the valve aperture i.e. the annular crown located between the seating S and the obturator O of the valve.
  • the breadth of the valve aperture is extremely small; the product therefore is subjected to strong acceleration and crosses the valve aperture, whereafter there is a brusque pressure change and a high-speed impact against a ring A at the outlet of the valve passage aperture.
  • Document US 1,551,672 discloses an apparatus for homogenizing liquids, comprising in combination a homogenizing nozzle, a member facing the nozzle, a gap between the nozzle and the said member, a central recess and annular grooves in the surfaces of the nozzle and the opposing member facing the gap, which are sub-divided so that the liquid under pressure can flow out of a plurality of homogenizing gaps, which are in fixed relation to one another, to the outlet space of the apparatus.
  • the product which exits through the gap and flows internally to the central recess impacts reciprocally inside the central recess.
  • the main aim of the present invention is to make available a homogenization valve which is constructionally quite simple while at the same time offering high operational efficiency in accordance with claim 1.
  • An advantage of the present invention is that it provides a valve of about the same size as traditional valves, and which therefore can be used in substitution of these prior-art valves in homogenizers.
  • the homogenization valve of the invention which is used in homogenizers of known type and not illustrated in the figures of the drawings, exhibits an inlet conduit 1 for the product to be homogenized and an outlet zone 5 for the homogenized product, which inlet and outlet are respectively upstream and downstream of the outlet aperture 2 of the valve.
  • the valve comprises a seating 3, fixed in the valve body 11, on which an obturator 4 is forced at a predetermined pressure, so that when the pressurised fluid to be homogenized is pumped through the valve and presses against the obturator, an outlet aperture 2 of the valve is defined.
  • the distance between the facing surfaces of the seating and the obturator i.e. the width of the valve outlet aperture, is determined by the state of equilibrium between the forces acting on the obturator.
  • the seating 3 and the obturator 4 of the valve face each other at an annular surface along an external circumference 2a and an internal circumference 2b of which the outlet aperture 2 of the valve develops.
  • a plurality of conduits 6 are afforded internally of the seating 3, each of which conduits 6 is connected by an end thereof to the inlet conduit 1 of the fluid to be homogenized.
  • the other ends 6a of the conduits open halfway between the inner and outer circumferences of the annular surface, where the seating 3 and the valve obturator 4 face each other; the ends 6a of the conduits 6 are angularly equidistant.
  • the seating 3 and the obturator 4 of the valve also define, internally thereof, a cavity 7 into which the valve outlet aperture 2 (developing along internal circumference 2b of the annular surface) opens; this cavity 7 is connected to the homogenized product outlet zone 5 by means of a plurality of holes 8 which are made in the obturator 4 of the valve.
  • the outlet ends 8a of the holes open on the external lateral surface of the obturator 4 which surface develops along the external circumference of the obturator 4 in a zone which is close to the outlet aperture 2 of the valve.
  • a projection 9 is often present internally of the cavity 7 and is solidly connected to the seating 3 of the valve, is located concentrically to the internal circumference 2b and is arranged in such a way as to intersect the plane containing the internal circumference 2b.
  • Figure 3 clearly shows that both the seating 3 and the obturator 4 of the valve are solid in rotation and arranged coaxially to each other.
  • the operation of the homogenization valve is rather similar, generally speaking, to the operation of known-type homogenization valves.
  • the product arriving at the valve inlet at high pressure raises the obturator of the valve, which is also subject to a high pressure which tends to close the valve.
  • the liquid product therefore exits through the narrow valve aperture which is created following the raising of the obturator.
  • the flow rate and efficiency of the valve are influenced by the equilibria of the pressures concerned (product inlet pressure - obturator closure pressure).
  • the valve has the primary advantage of having the same overall external dimensions as a known-type valve, which means that it can be substituted for a traditional valve with no need for structural changes to the homogenizer already fitted with known valves.
  • the invention offers higher valve flow rate thanks to the special geometry of the valve, which gives a more or less double length of outlet aperture in comparison to valves of known type; the width of the outlet aperture, however, is practically halved with respect to the prior art, which leads to an almost-instantaneous pressure drop for the product transiting through the valve, and a considerable bubble cavitation effect in the product exiting from the outlet aperture of the valve. All of these advantages are obtained without having to increase the force transmitted by the inletting product to the obturator (the sum of the areas of conduit 6 ends 6a can be equal to the area of the outlet aperture of a known-type valve).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Soy Sauces And Products Related Thereto (AREA)
  • Details Of Valves (AREA)

Claims (3)

  1. Homogenisierungsventil, enthaltend einen Sitz (3) und einen Verschluss (4), die einander zugewandte Oberflächen haben, welche so voneinander abstehend sind, dass sie eine Ventilauslassöffnung (2) beschreiben; eine Einlassleitung (1) für das zu homogenisierende Produkt und einen Auslassbereich (5) für das Produkt, wenn es homogenisiert ist, wobei die Einlassleitung (1) stromaufwärts und der Auslassbereich (5) stromabwärts der Auslassöffnung (2) des Ventils angeordnet sind; wobei der Sitz (3) und der Verschluss (4) an einer ringförmigen Fläche einander zugewandt sind, innerhalb welcher ringförmigen Fläche die Enden (6a) einer Anzahl von Leitungen (6) münden, von welchen jede Leitung (6) mit der Einlassleitung (1) verbunden ist; wobei sich die Auslässöffnung (2) des Ventils entlang einem äusseren Umfang (2a) wie auch einem inneren Umfang (2b) der ringförmigen Fläche erstreckt; wobei der Sitz (3) und der Verschluss (4) des Ventils zusammen einen Hohlraum (7) beschreiben, in welchen die sich entlang dem inneren Umfang (2b) erstreckende Auslassöffnung (2) mündet; und wobei die Auslassöffnung (2) mit Hilfe einer Anzahl von Bohrungen (8) an den Auslassbereich (5) für das homogenisierte Produkt angeschlossen ist; dadurch gekennzeichnet, dass es einen Vorsprung (9) enthält, welcher im Inneren des Hohlraums (7) in einer konzentrischen Position im Verhältnis zu dem inneren Umfang (2b) angeordnet ist und die den inneren Umfang (2b) enthaltende Ebene schneidet.
  2. Ventil nach Patentanspruch 1, dadurch gekennzeichnet, dass die Anzahl von Bohrungen (8) in dem Verschluss (4) aufgewiesen ist und Auslassöffnungen (8a) hat, welche sich an einer seitlichen äusseren Oberfläche des Verschlusses (4) in einem Bereich öffnen, der dicht an der sich entlang dem äusseren Umfang (2a) erstreckenden Auslassöffnung (2) des Ventils liegt.
  3. Ventil nach Patentanspruch 1, dadurch gekennzeichnet, dass die Anzahl von Leitungen (6) in den Sitz (3) des Ventils eingearbeitet ist, und die Enden (6a) der Leitungen (6) an einem mittleren Umfang der ringförmigen Fläche münden und einen gleichmässigen Winkelabstand voneinander haben.
EP00830652A 2000-10-05 2000-10-05 Homogenisierungsventil Expired - Lifetime EP1195190B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT00830652T ATE337083T1 (de) 2000-10-05 2000-10-05 Homogenisierungsventil
DK00830652T DK1195190T3 (da) 2000-10-05 2000-10-05 Homogeniseringsventil
EP00830652A EP1195190B1 (de) 2000-10-05 2000-10-05 Homogenisierungsventil
ES00830652T ES2267488T3 (es) 2000-10-05 2000-10-05 Valvula de homogeneizacion.
DE60030290T DE60030290T2 (de) 2000-10-05 2000-10-05 Homogenisierungsventil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00830652A EP1195190B1 (de) 2000-10-05 2000-10-05 Homogenisierungsventil

Publications (2)

Publication Number Publication Date
EP1195190A1 EP1195190A1 (de) 2002-04-10
EP1195190B1 true EP1195190B1 (de) 2006-08-23

Family

ID=8175499

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00830652A Expired - Lifetime EP1195190B1 (de) 2000-10-05 2000-10-05 Homogenisierungsventil

Country Status (5)

Country Link
EP (1) EP1195190B1 (de)
AT (1) ATE337083T1 (de)
DE (1) DE60030290T2 (de)
DK (1) DK1195190T3 (de)
ES (1) ES2267488T3 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1393851B1 (it) * 2009-04-01 2012-05-11 Bertoli S R L Valvola di omogeneizzazione
CN104411391A (zh) * 2012-07-05 2015-03-11 利乐拉瓦尔集团及财务有限公司 一种均化阀
CN109395666B (zh) * 2018-12-20 2023-09-26 中原工学院 一体化的对射流型反应器
CN110538626B (zh) * 2019-08-28 2023-10-13 迈安德集团有限公司 一种可变可控的空化器

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR524345A (fr) * 1920-09-18 1921-09-01 Jean Jerome Machine à homogénéiser le lait
US1551672A (en) * 1925-04-07 1925-09-01 Knollenberg Rudolf Apparatus for homogenizing liquids
US2882025A (en) * 1955-06-16 1959-04-14 Carnation Co Homogenizing valve
US4352573A (en) 1980-01-29 1982-10-05 Gaulin Corporation Homogenizing method
IT1282765B1 (it) 1996-05-30 1998-03-31 Niro Soavi Spa Valvola di omogeneizzazione

Also Published As

Publication number Publication date
DE60030290T2 (de) 2007-08-23
ES2267488T3 (es) 2007-03-16
EP1195190A1 (de) 2002-04-10
ATE337083T1 (de) 2006-09-15
DK1195190T3 (da) 2006-11-13
DE60030290D1 (de) 2006-10-05

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