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WO1987007819A1 - Dispositif de melange pour suspensions a sedimentation rapide - Google Patents

Dispositif de melange pour suspensions a sedimentation rapide Download PDF

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Publication number
WO1987007819A1
WO1987007819A1 PCT/SE1987/000280 SE8700280W WO8707819A1 WO 1987007819 A1 WO1987007819 A1 WO 1987007819A1 SE 8700280 W SE8700280 W SE 8700280W WO 8707819 A1 WO8707819 A1 WO 8707819A1
Authority
WO
WIPO (PCT)
Prior art keywords
suspension
valve
fluid
arrangement according
mixing
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.)
Ceased
Application number
PCT/SE1987/000280
Other languages
English (en)
Inventor
Bengt Palm
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.)
Tetra Pak Food and Beverage Systems AB
Original Assignee
Alfa Laval Food and Dairy Engineering AB
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 Alfa Laval Food and Dairy Engineering AB filed Critical Alfa Laval Food and Dairy Engineering AB
Publication of WO1987007819A1 publication Critical patent/WO1987007819A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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 OR TREATMENT THEREOF
    • A23C20/00—Cheese substitutes
    • A23C20/02—Cheese substitutes containing neither milk components, nor caseinate, nor lactose, as sources of fats, proteins or carbohydrates
    • A23C20/025—Cheese substitutes containing neither milk components, nor caseinate, nor lactose, as sources of fats, proteins or carbohydrates mainly containing proteins from pulses or oilseeds
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23L—FOODS, FOODSTUFFS OR NON-ALCOHOLIC BEVERAGES, NOT OTHERWISE PROVIDED FOR; PREPARATION OR TREATMENT THEREOF
    • A23L11/00—Pulses, i.e. fruits of leguminous plants, for production of food; Products from legumes; Preparation or treatment thereof
    • A23L11/40—Pulse curds
    • A23L11/45—Soy bean curds, e.g. tofu
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50—Mixing liquids with solids
    • B01F23/59—Mixing systems, i.e. flow charts or diagrams
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00—Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80—Mixing plants; Combinations of mixers

Definitions

  • the present invention relates to an arrangement for addition of a certain amount of a rapidly settling suspension to a fluid. 5
  • Such a process where a rapidly settling substance shall be added 25 to fluid is the production of cheese from soy milk, so called "tofu".
  • a concentrated soy base is produced and to the soy base a predetermined amount of a coagulant, e.g. .calcium sulphate is added suspended in water.
  • the arrangement according to the invention is mainly characterized in that it comprises a circu-
  • a rapidly settling suspension is brought to circulate and a mixing device connected to the circulation path.
  • This mixing device is also connected to a conduit for the fluid to which the suspension is to be added.
  • a pipeline for addition of the rapidly settling suspension which pipeline is connected to the circulation path and to the mixing device.
  • a dosing device for suspension is located in the feed conduit.
  • the arrangement according to the invention is with advantage provided with a dosing means for fluid arranged to work syn ⁇ chronous with the dosing device for the suspension. Predeter ⁇ mined amounts of fluid and suspension may he fed to the mixing device by using such an arrangement.
  • the mixing device consists with advantage of a valve which is used to open and close the connection between the suspension supply pipeline and the conduit through which the fluid flows.
  • This valve has also a constantly open connection through which the suspension circulates. By designing the valve in this way the suspension may be kept in movement all the time.
  • the valve may with advantage be designed such that in its closed position a communication is formed between the suspension supply pipeline and the connection through the valve in which the suspension circulates. With such a design of the valve the advantage is also obtained that the supply conduit is not closed at any time but the suspension is kept in movement in the same all the time.
  • the described device is with advantage designed such that the supply conduit for fluid in the valve is formed such that the fluid is at first brought to flow towards the cone of the valve and in the close proximity of the same is brought to turn and at an increased speed be brought in contact with the suspension at which a good mixing is obtained.
  • a counter pressure valve is with advantage arranged in the pipeline for suspension, which valve opens when the dosing device for the suspension works.
  • a container in which the powder which shall be suspended in liquid is mixed with the liquid which container is provided whith level guards to be used to control the level and to hinder dry pumping.
  • a packing device is suitably arranged in connection to the mixing valve.
  • the dosing device for the suspension and the dosing device for fluid advantageously consist of piston or membrane pumps which work synchronously with the packing device.
  • a container 1 for the fluid in this case a concentrated soy milk (soy base), which by means of a piston pump 2 is transported to a mixing device 3.
  • a coagulant in this case a suspension of calcium sulphate in water, and is transported to a packing line 4 for packages 5.
  • the coagulant is produced in a container 6.
  • a pump 7 feeds the coagulant to a circulation path comprising pipes 8 and 9.
  • the coa- gulant is pumped around all the time in order to be kept in movement to hinder settling and stop in the pipeline.
  • a pipeline 11 for addition of coagulant is connected to the circulation path.
  • this pipeline there is a counter pressure valve 12 and a dosing pump 13 of piston type.
  • the dosing pump 13 is by way of a pipeline 14 connected to the mixing divice 3.
  • the pumps 2 and 13 work synchronously.
  • the adjustment of the amount of each piston stroke may be made in a known manner for example by adjustment of the long holes on the level arms. For pump 2 this adjustment takes place at the attachment of the piston rod of the driving cylinder 15 and for the pump 13 a similar adjust ⁇ ment of the long hole may be done. In this way the relation between the dosages may be maintained automatically, when an adjustment of the necessary amount for the used packages is made by means of the pump 2.
  • the coagulant is produced from powder and water in the container 6.
  • a screw feeder 16 By means of a screw feeder 16, the rotation speed of which may be adjusted, powder is added to the container 6.
  • the amount of water added is controlled by means of the flow meter 17.
  • the added amount is measured by a flow meter 18.
  • a mixing means 19 In order to obtain a good mixing and to hinder settling, there is a mixing means 19 in the container.
  • the container is therefore provided with two level transmitters 20 and 21, which are connected to the powder feeder 16 and the flow meter 17.
  • the mixing device 3 is described further with reference to fig. 2 and 3. In these the valve which constitutes the mixing device is shown in an open and a closed position.
  • the valve which is shown in fig. 2 has a housing 22 with a valve body 23 and a valve stem 24.
  • An inlet conduit 25 for the main product, soy milk, is provided in the lower part of the valve. Coaxially with and outside of the inlet conduit 25 there is a mixing house 26.
  • the position of the valve stem is con- trolled by means of an air piston 27 in an air cylinder 28 in the upper part of the valve.
  • a source for overpressure is connected to a space 30 above the air piston 27.
  • the valve 3 is also provided with an inlet conduit 32 connected to the pipe 8 in the circulation path for the suspension and an outlet pipe 33 connected to the pipe 9 in the circulation path.
  • a pipe 34 connects the valve with the supply pipe 14 for suspen ⁇ sion.
  • In the valve body 23 there is a circular slot 35 through which suspension may flow from the inlet pipe 32 to the outlet pipe 33 in the open position of the valve.
  • In the valve housing 22 there is an annular cavity 36 outside radial channels 37 in towards a space 38 between the valve body 23 and the valve ste 24.
  • soy milk in the container 1 there is a concentrated soy milk (soy base). From this, predetermined amounts of soy milk are dosed by means of a piston pump 2 to the mixing device (valve) 3.
  • the soy milk flows in through the inlet conduit 25 (fig. 2 and 3) and up towards the upper part of the inlet conduit.
  • the flow is forced to turn and it is forced out from the mixing house under an increase in speed and out through a pipe 40 arranged in connection with a packing line 4 for packages 5.
  • the coagulant is produced in the container 6 from a mix of calcium sulphate and water. Calcium sulphate is sparingly soluble in water and settles rapidly if there is no mixing.
  • the mixing device 19 assures that calcium sulphate is suspended in the container 6.
  • the suspension of calcium sulphate (in the future called the suspension) is transported by means of a pump 7 from the container 6 to a pipeline 11.
  • a pump 7 In this there is a counter pressure valve 12 and another piston pump 13.
  • the piston pump 13 feeds a predetermined amount of suspension to the inlet 34 of the mixing valve 3 by way of a pipe 14.
  • the suspension flows into the valve 3 and flows by way of the space 38 which sur ⁇ rounds the valve stem 23 out from the mixing house 25.
  • the suspension meets the soy milk, then the flow direction of the same is reversed and good turbulence and conse ⁇ quently good mixing of the two liquids is obtained.
  • the mixture of liquids is filled into packages and coagulation to a firm consistence takes place very rapidly.
  • the pump 7 also feeds suspension through a circulation path.
  • a valve 10 arranged in a pipe 8.
  • the pipe 8 is also connected to the mixing valve 3 by way of an inlet 32 and an outlet 33.
  • the outlet 33 directs the suspension back to the container 6 by way of pipe 9.
  • valve 10 is closed automatically after a signal from a control device (not shown) and the valve stem 24 is drawn upwards by the spring 31 and closes the mixing device 3.
  • the pressure from pump 7 then increases the pressure in the pipeline 11 and a counter pressure valve 12 is forced to open.
  • the non-return valves of the piston pump 13 are arranged in such a way that they do not give any resistance and its valve bodies are lifted such that the passage through the pipe 14 may take place unhindered.
  • the space 38 around the valve stem 24 communicates with the outlet 33 in the circulation path and suspension may accordingly flow back to the container 6.
  • the valve 10 may be kept in a position where a small through flow opening through the valve is kept open, at which a smaller flow is allowed to pass the circulation path 8, the mixing valve 3 and the pipe 9.
  • the flow which has passed the pump 13 and the mixing valve 3 is also transported to the pipe 9. In this way both settling and blocking of both the pipes 8, 9 and 11 and the pump 13 and the mixing valve 3 is hindered.
  • a mixing device for rapidly settling suspension may be designed in many separate ways depending upon the intended application.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Polymers & Plastics (AREA)
  • Agronomy & Crop Science (AREA)
  • Botany (AREA)
  • Health & Medical Sciences (AREA)
  • Nutrition Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • Control Of Non-Electrical Variables (AREA)

Abstract

Un dispositif permettant d'ajouter à un liquide une suspension à sédimentation rapide comprend un circuit (8, 9) dans lequel circule une suspension à sédimentation rapide. Un dispositif de mélange (3) est relié au circuit ainsi qu'à un conduit (25) pour véhiculer le liquide auquel doit être ajoutée la suspension. Une canalisation d'alimentation (11, 14) pour la suspension à sédimentation rapide est reliée à la fois au circuit et au dispositif de mélange (3). Un moyen de dosage (13) de la suspension est prévu dans la canalisation d'alimentation (11, 14).
PCT/SE1987/000280 1986-06-17 1987-06-12 Dispositif de melange pour suspensions a sedimentation rapide Ceased WO1987007819A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8602687-9 1986-06-17
SE8602687A SE458341B (sv) 1986-06-17 1986-06-17 Blandningsanordning foer snabbsedimenterande uppslamningar

Publications (1)

Publication Number Publication Date
WO1987007819A1 true WO1987007819A1 (fr) 1987-12-30

Family

ID=20364838

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1987/000280 Ceased WO1987007819A1 (fr) 1986-06-17 1987-06-12 Dispositif de melange pour suspensions a sedimentation rapide

Country Status (4)

Country Link
EP (1) EP0311628A1 (fr)
AU (1) AU7546387A (fr)
SE (1) SE458341B (fr)
WO (1) WO1987007819A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6200937B1 (en) 1998-06-09 2001-03-13 Neutrogena Corporation Anti-residue shampoo and liquid toiletry production method
WO2002000029A1 (fr) * 2000-06-26 2002-01-03 Societe Des Produits Nestle S.A. Produit laitier fermente et procede de fabrication

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1977171A (en) * 1932-09-06 1934-10-16 Stanley D Clithero Method and apparatus for proportioning liquids
US3779261A (en) * 1972-03-10 1973-12-18 A Zygiel Method and apparatus for mixing fluids
DE2616024A1 (de) * 1976-04-12 1977-10-27 Hoechst Ag Verfahren und vorrichtung zum mischen von fluessigkeiten
GB2027603A (en) * 1978-05-11 1980-02-27 Platon Ltd G System for mixing dissimilar liquids

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1977171A (en) * 1932-09-06 1934-10-16 Stanley D Clithero Method and apparatus for proportioning liquids
US3779261A (en) * 1972-03-10 1973-12-18 A Zygiel Method and apparatus for mixing fluids
DE2616024A1 (de) * 1976-04-12 1977-10-27 Hoechst Ag Verfahren und vorrichtung zum mischen von fluessigkeiten
GB2027603A (en) * 1978-05-11 1980-02-27 Platon Ltd G System for mixing dissimilar liquids

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6200937B1 (en) 1998-06-09 2001-03-13 Neutrogena Corporation Anti-residue shampoo and liquid toiletry production method
WO2002000029A1 (fr) * 2000-06-26 2002-01-03 Societe Des Produits Nestle S.A. Produit laitier fermente et procede de fabrication
WO2002001961A1 (fr) * 2000-06-26 2002-01-10 Societe Des Produits Nestle S.A. Produit de lait fermente et procede de production

Also Published As

Publication number Publication date
SE8602687L (sv) 1987-12-18
SE458341B (sv) 1989-03-20
EP0311628A1 (fr) 1989-04-19
AU7546387A (en) 1988-01-12

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