US3883121A - Process for mixing two or more liquid or pastry products under high pressure and mixing head therefor - Google Patents

Process for mixing two or more liquid or pastry products under high pressure and mixing head therefor Download PDF

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Publication number
US3883121A
US3883121A US394100A US39410073A US3883121A US 3883121 A US3883121 A US 3883121A US 394100 A US394100 A US 394100A US 39410073 A US39410073 A US 39410073A US 3883121 A US3883121 A US 3883121A
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US
United States
Prior art keywords
cavity
end portion
mixing
valve
mixing head
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
US394100A
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English (en)
Inventor
Michel Pierre Guillaud
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.)
SECMER LA TRONCHE SA
Original Assignee
SECMER LA TRONCHE SA
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 SECMER LA TRONCHE SA filed Critical SECMER LA TRONCHE SA
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Publication of US3883121A publication Critical patent/US3883121A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/76—Mixers with stream-impingement mixing head
    • 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
    • B01F25/20—Jet mixers, i.e. mixers using high-speed fluid streams
    • B01F25/23—Mixing by intersecting jets
    • 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
    • B01F25/70—Spray-mixers, e.g. for mixing intersecting sheets of material
    • B01F25/72—Spray-mixers, e.g. for mixing intersecting sheets of material with nozzles
    • B01F25/721—Spray-mixers, e.g. for mixing intersecting sheets of material with nozzles for spraying a fluid on falling particles or on a liquid curtain
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/74—Mixing; Kneading using other mixers or combinations of mixers, e.g. of dissimilar mixers ; Plant
    • B29B7/7457—Mixing heads without moving stirrer

Definitions

  • the improvements which constitute the subject of the present invention have the goal of creating a mixing head which can respond quite well to various requirements of the technique of high pressure mixing.
  • the so-called countercurrent method where the number of products which can be mixed is by definition only two
  • one of the advantages of the present invention is the fact that a number of liquid or pasty products greater than two can be mixed at the level of the mixing head.
  • the process of the invention is characterized in that it consists in projecting these products under pressure obliquely towards the same point on a surface so as to obtain a homogenous mixture which is then sent in the direction of a converging-diverging nozzle which assures compression, followed by expansion of the mixture.
  • the mixing head of the invention is characterized in that one of its ends is constructed in the shape of a spherical dome onto the center of which the products are projected; its opposing end, which is also spherical, comprises a central channel which runs into a discharge chamber of greater diameter.
  • the center of the spherical dome is provided with a valve which is likewise spherical and which is normally closed.
  • the valve is opened in the direction of the interior in order to let pass a liquid under pressure to clean the cavity.
  • FIG. 1 is a longitudinal section of a mixing head according to the invention.
  • FIG. 2 is a partial view of FIG. I on a larger scale, whereby the valve is open.
  • the mixing head shown in FIG. 1 comprises essentially a body 1, a cap 2 and a discharge tube 3.
  • the body 1 has a generally cylindrical form and has a central cavity 4, which in cross-section has a circular shape and of which the upper outlet is provided with a threaded piece 5.
  • the bottom of cavity 4 has a concavely spherical shape and is pierced in its center by a channel 6 connecting cavity 4 to a cylindrical chamber 7 opening downwards.
  • the upper end 7a of chamber 7 is preferably spherical in shape.
  • Channel 6 is of a very short length. It is obvious that the bottom of cavity 4, the channel 6 and the upper part of chamber 7 constitute a convergent-divergent nozzle.
  • the outlet of chamber 7 comprises a threaded part 8 of a greater diameter, into which is screwed the discharge tube 3.
  • Each boss includes an axial bore 11, or 12, with two diameters into which a needle injector 14 of a known type is inserted.
  • Each injector comprises a body 14, the conical end 14a of which extends slightly into the cavity 4, an injector holder 15, and a needle 16 which supports a pushrod 17 springingly thrust back in the direction of the geometric axis of the body 1 by means which are not represented.
  • the injector holder comprises an oblique perforation l8 ending in a hole 19 of the body of the injector I4 in such a way so as to allow a liquid to pass into an annular space 20 situated between the needle 16 and the axial bore 14b of body 14.
  • This body terminates in a cone and jets 21 are provided in the end of the body to establish a connection between space 20 and the cavity 4.
  • jets have a geometrical axis which is oriented upwards in a direction which will be defined more precisely later on.
  • Cap 2 is made in the shape of a cylinder of which the lower end has a threaded tip 22 which screws into piece 5 of body 1.
  • the cap has a central perforation with several diameters which opens downwards into a spherical hollow 23.
  • This perforation has a first bore 24 of large diameter into which the head 25a of a piston 25 can be placed.
  • the piston rod cooperates with a second bore 26 of a smaller diameter than bore 24 and which follows it downwards.
  • the rod of piston 25 terminates in a projection. 27 of smaller diameter which cooperates with the low part 28 of the central perforation.
  • Piston 25 terminates in a valve 29 of which the head is removed from the end of the tail of the piston in such a way that a space 30 separates the two elements.
  • This valve has on its extreme face a spherical depression 29a of the same radius as that of the hollow 23.
  • Piston 25 has a central hole 25b ending in space 30 through the channels 31 with a small diameter.
  • O-rings 32 and 33 are placed respectively about the head and the rod of piston 25.
  • cap 2 has a threaded radial hole 2a in which a coupling 36 is screwed and which empties under the head 25a of piston 25.
  • compressed air can be replaced by any other fluid or gas under pressure.
  • holes can be pierced with advantage at the level of channel 6 in a plane perpendicular to the axis of this channel. the axis of these holes forming an angle less than 90 with the tangent of said channel. This is done in such a way that a whirling movement is created.
  • a head for mixing multiple liquid products introduced thereinto under pressure comprising:
  • a body including therein a cavity having a central portion and having respective first and second concavely shaped end portions separated from each other along the axis of the cavity by said central portion, and said body further having a chamber located adjacent to said first end portion and communicating with said first end portion by a channel located on said axis and said second end portion having an opening therethrough.
  • injector means extending from outside the head into the central portion of the cavity, the injector means being supplied with said liquid products under pressure and having jet openings extending into the cavity and directed to project said products onto the concavely shaped second end portion:
  • a discharge tube extending from the chamber to disto comprise a convergent-divergent nozzle for the discharged products.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nozzles (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
US394100A 1972-09-06 1973-09-04 Process for mixing two or more liquid or pastry products under high pressure and mixing head therefor Expired - Lifetime US3883121A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7232065A FR2213155B1 (enrdf_load_stackoverflow) 1972-09-06 1972-09-06

Publications (1)

Publication Number Publication Date
US3883121A true US3883121A (en) 1975-05-13

Family

ID=9104080

Family Applications (1)

Application Number Title Priority Date Filing Date
US394100A Expired - Lifetime US3883121A (en) 1972-09-06 1973-09-04 Process for mixing two or more liquid or pastry products under high pressure and mixing head therefor

Country Status (6)

Country Link
US (1) US3883121A (enrdf_load_stackoverflow)
JP (1) JPS4986940A (enrdf_load_stackoverflow)
DE (1) DE2344272A1 (enrdf_load_stackoverflow)
FR (1) FR2213155B1 (enrdf_load_stackoverflow)
GB (1) GB1408221A (enrdf_load_stackoverflow)
IT (1) IT995291B (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3981487A (en) * 1975-01-16 1976-09-21 Consiglio Nazionale Delle Richerche Device for mixing liquids in kinetic reactions observed by the method known as stopped flow
US4115299A (en) * 1975-03-26 1978-09-19 The Upjohn Company Frothing method and an apparatus for carrying out the method
US4302550A (en) * 1977-10-14 1981-11-24 Bayer Aktiengesellschaft Process and apparatus for the mixing and application of reactive materials
US4510120A (en) * 1981-11-12 1985-04-09 Krauss-Maffei Aktiengesellschaft Mixing head
US4608233A (en) * 1982-04-06 1986-08-26 Afros S.P.A. Mixing method and apparatus for preparing multi-component plastic materials especially polyurethanes
US4944599A (en) * 1987-11-10 1990-07-31 Krauss-Maffei A.G. Impingement mixing device with pressure controlled nozzle adjustment
US20020196702A1 (en) * 1994-10-28 2002-12-26 Tal Shechter Forming emulsions
CN104607127A (zh) * 2014-12-30 2015-05-13 中南大学 超声波强化撞击流反应器

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2538437C3 (de) * 1975-08-29 1980-05-08 Elastogran Maschinenbau Gmbh & Co, 8021 Strasslach Mischvorrichtung für Mehrkomponentenkunststoffe mit Poren- oder Zellenstruktur, insbesondere Polyurethan
IT1109997B (it) * 1978-03-09 1985-12-23 Afros Srl Testa per la miscelazione e l'eiezione di componenti liquidi interagenti per lo stampaggio di materiali plastici

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2534253A (en) * 1942-02-27 1950-12-19 Anderson Clayton & Co Refining apparatus
US3202281A (en) * 1964-10-01 1965-08-24 Weston David Method for the flotation of finely divided minerals
US3285712A (en) * 1959-10-28 1966-11-15 Ministerul Ind Petrolului Apparatus for the nitration of organic compounds in gaseous phase
US3658302A (en) * 1968-12-31 1972-04-25 Louis Duthion Feed unit for a fuel burner

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1195721B (de) * 1958-03-11 1965-07-01 Pilkington Brothers Ltd Verfahren und Vorrichtung zum innigen Mischen und Zerstaeuben von in Wechselwirkung stehenden Fluessigkeiten

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2534253A (en) * 1942-02-27 1950-12-19 Anderson Clayton & Co Refining apparatus
US3285712A (en) * 1959-10-28 1966-11-15 Ministerul Ind Petrolului Apparatus for the nitration of organic compounds in gaseous phase
US3202281A (en) * 1964-10-01 1965-08-24 Weston David Method for the flotation of finely divided minerals
US3658302A (en) * 1968-12-31 1972-04-25 Louis Duthion Feed unit for a fuel burner

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3981487A (en) * 1975-01-16 1976-09-21 Consiglio Nazionale Delle Richerche Device for mixing liquids in kinetic reactions observed by the method known as stopped flow
US4115299A (en) * 1975-03-26 1978-09-19 The Upjohn Company Frothing method and an apparatus for carrying out the method
US4302550A (en) * 1977-10-14 1981-11-24 Bayer Aktiengesellschaft Process and apparatus for the mixing and application of reactive materials
US4310493A (en) * 1977-10-14 1982-01-12 Bayer Aktiengesellschaft Apparatus for the mixing and application of reactive materials
US4510120A (en) * 1981-11-12 1985-04-09 Krauss-Maffei Aktiengesellschaft Mixing head
US4608233A (en) * 1982-04-06 1986-08-26 Afros S.P.A. Mixing method and apparatus for preparing multi-component plastic materials especially polyurethanes
US4944599A (en) * 1987-11-10 1990-07-31 Krauss-Maffei A.G. Impingement mixing device with pressure controlled nozzle adjustment
US20020196702A1 (en) * 1994-10-28 2002-12-26 Tal Shechter Forming emulsions
US6764213B2 (en) * 1994-10-28 2004-07-20 B.E.E. International Forming emulsions
CN104607127A (zh) * 2014-12-30 2015-05-13 中南大学 超声波强化撞击流反应器
CN104607127B (zh) * 2014-12-30 2016-05-18 中南大学 超声波强化撞击流反应器

Also Published As

Publication number Publication date
JPS4986940A (enrdf_load_stackoverflow) 1974-08-20
GB1408221A (en) 1975-10-01
FR2213155B1 (enrdf_load_stackoverflow) 1975-09-12
IT995291B (it) 1975-11-10
FR2213155A1 (enrdf_load_stackoverflow) 1974-08-02
DE2344272A1 (de) 1974-03-21

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