EP0478497B1 - Mélangeur statique avec corps en forme de tube - Google Patents

Mélangeur statique avec corps en forme de tube Download PDF

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Publication number
EP0478497B1
EP0478497B1 EP91810656A EP91810656A EP0478497B1 EP 0478497 B1 EP0478497 B1 EP 0478497B1 EP 91810656 A EP91810656 A EP 91810656A EP 91810656 A EP91810656 A EP 91810656A EP 0478497 B1 EP0478497 B1 EP 0478497B1
Authority
EP
European Patent Office
Prior art keywords
mixer according
plastic tube
sealing surface
mixer
housing
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
EP91810656A
Other languages
German (de)
English (en)
Other versions
EP0478497A1 (fr
Inventor
Arno Signer
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.)
Sulzer Chemtech AG
Original Assignee
Sulzer Chemtech AG
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 Sulzer Chemtech AG filed Critical Sulzer Chemtech AG
Publication of EP0478497A1 publication Critical patent/EP0478497A1/fr
Application granted granted Critical
Publication of EP0478497B1 publication Critical patent/EP0478497B1/fr
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
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/43—Mixing tubes, e.g. wherein the material is moved in a radial or partly reversed direction
    • B01F25/431—Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor

Definitions

  • the invention relates to a static mixer with a tubular housing, at least one mixing element arranged therein and end connections on both sides.
  • Such mixers are used for the continuous mixing, dispersing and homogenizing of hardeners, additives, accelerators, reactors and paints in resins, adhesives and sealants. This means that mixing performance can be achieved with a low weight and low volume of the mixer with good reproducibility of the mixing quality and low heat input.
  • Such mixing devices are e.g. known from CH-A-642 564.
  • This object is achieved according to the invention with a static mixer according to claim 1.
  • the interchangeable plastic pipe, to which the material to be mixed does not stick, enables the mixer to be easily dismantled into its individual parts and thus simple cleaning and reuse of the mixing elements with a new plastic pipe.
  • the annular sealing surface seals the carrier sealing ring against the supporting tubular housing, so that no reactive resin can get between the housing and the plastic tube, which could prevent the plastic tube from being pulled out.
  • the support surface of the carrier sealing ring also serves to support the mixing elements against the high pressure forces that occur during operation.
  • the annular sealing surface can be conical, preferably with a cone angle to the tube axis of 10 ° to 30 °.
  • Other favorable designs of the sealing surface can have roughening, corrugation, scoring or a thread for screwing the plastic tube onto the carrier sealing ring.
  • a tapered thread in particular means that a relatively soft plastic tube can be fixed on the carrier sealing ring so strongly that even high pressure forces do not impair the sealing effect.
  • the plastic tube can also have an inner cone at the end to achieve intimate contact with the carrier sealing ring when assembling the mixer.
  • the plastic tube can advantageously consist of non-adhesive polyolefins such as PE or PP or it can have an inert surface layer, for example made of PTFE, so that it can also be easily removed from hardened resins and adhesives.
  • a longitudinal groove as a predetermined breaking point in the plastic tube can make it easier to cut open after use.
  • a metallic version of the seal between the carrier sealing ring and the end connections is permanent and easy to clean. Mixing elements with crossing webs, as described, for example, in CH-A-642 564 and known as Sulzer SMX mixers, are particularly efficient.
  • Fig. 1 shows a disassemblable mixer according to the invention with a pressure-resistant, load-bearing steel tube as the housing 2, an inserted, replaceable plastic tube 3 as a cheap consumable, static mixing elements 11 inserted therein, a carrier sealing ring 4 each, and with end connections 5 and 6 on both sides which supply lines and outlet nozzles can be connected.
  • This structure enables simple, quick assembly, disassembly, cleaning and reuse of the mixer.
  • the mode of operation of the carrier sealing ring 4 is of crucial importance here.
  • Its support surface 8 absorbs the high pressure forces of the mixing elements of, for example, 200 bar, while at the same time the annular sealing surface 7, with a suitable shape, ensures intimate contact with the more flexible plastic pipe.
  • the plastic tube 3 is plugged or screwed onto this sealing surface on both sides.
  • the connecting elements here clamping ring screw connections 13, are then tightened to such an extent that a load-bearing connection is created from the steel pipe 2 via the carrier sealing ring 4 to the end connection 5, 6.
  • the plastic pipe itself then no longer has to absorb high pressure forces.
  • Suitable shapes of the sealing surface 7 are, for example, slightly conical with an angle W1 of preferably 10 ° to 30 °.
  • the intimate contact with the carrier sealing ring can be improved, depending on the type of plastic tube, by slight roughening, corrugation or scoring 17.
  • a very practical variant with a conical thread 16, which also allows the use of softer plastic pipes, is shown in FIG. 2.
  • the connection to the end connections is made here by means of the flanges 15, 16, with a metallic seal 22 between the carrier sealing ring 4 and the end connection 5 is achieved. The flow of the mixed medium is thus sealed against the outside and pressure-tight towards the plastic pipe.
  • Fig. 3 shows a further variant with a screw 13 and an inner cone 18 at the ends of the plastic tube 3, which is pressed onto a cylindrical or conical sealing surface 7, also provides a secure seal.
  • the plastic tube 3 here has a surface layer 19, e.g. made of PTFE or other inert material, which prevents the plastic pipe from sticking or being attacked by an aggressive mix. With a longitudinal groove (not shown) as the predetermined breaking point in the plastic tube, this can be easily separated after use and the mixing elements 11 can be removed.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Claims (12)

  1. Mélangeur statique à corps tubulaire dans lequel au moins un élément mélangeur est disposé et qui comporte des deux côtés des raccords d'extrémité, caractérisé par un tube de matière plastique interchangeable (3) disposé entre le corps (2) et les éléments mélangeurs (11) et constituant une pièce se jetant après usage, ainsi que par un anneau d'étanchéité-support (4) disposé entre chaque raccord d'extrémité (5, 6) et le corps (2) et comportant une surface (8) d'appui des éléments mélangeurs ainsi qu'une surface annulaire d'étanchéité (7), le tube de matière plastique (3) reposant sans aucun interstice sur cette surface d'étanchéité (7).
  2. Mélangeur selon la revendication 1, caractérisé en ce que la surface annulaire d'étanchéité (7) est conique.
  3. Mélangeur selon la revendication 2, caractérisé en ce que l'angle W1 au sommet du cône avec l'axe du tube est de 10° à 30°.
  4. Mélangeur selon la revendication 1, caractérisé en ce que la surface d'étanchéité comporte une rugosité, un striage ou un rainurage (17).
  5. Mélangeur selon la revendication 1, caractérisé en ce que la surface d'étanchéité (7) comporte un pas de vis (16) pour le vissage du tube de matière plastique (3).
  6. Mélangeur selon la revendication 1, caractérisé en ce que la surface d'étanchéité comporte un filet de vis conique.
  7. Mélangeur selon la revendication 1, caractérisé en ce que le tube de matière plastique (3) comporte à chaque extrémité un cône interne (18) inscrivant un angle W2 de 10° à 30° avec l'axe du tube.
  8. Mélangeur selon la revendication 1, caractérisé en ce que le tube de matière plastique est en polyoléfines telles que le PE ou le PP.
  9. Mélangeur selon la revendication 1, caractérisé en ce que le tube de matière plastique comporte au moins intérieurement une couche superficielle inerte (19), par exemple de PTFE.
  10. Mélangeur selon la revendication 1, caractérisé en ce que le tube de matière plastique comporte une rainure longitudinale (21) constituant un lieu de cassure pour la séparation après utilisation.
  11. Mélangeur selon la revendication 1, caractérisé par une étanchéité métallique (22) entre l'anneau d'étanchéité-support (4) et les raccords d'extrémité (5, 6).
  12. Mélangeur selon la revendication 1, caractérisé en ce que les éléments mélangeurs (11) comprennent des éléments qui se croisent.
EP91810656A 1990-09-19 1991-08-20 Mélangeur statique avec corps en forme de tube Expired - Lifetime EP0478497B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH303690 1990-09-19
CH3036/90 1990-09-19

Publications (2)

Publication Number Publication Date
EP0478497A1 EP0478497A1 (fr) 1992-04-01
EP0478497B1 true EP0478497B1 (fr) 1994-03-30

Family

ID=4247184

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91810656A Expired - Lifetime EP0478497B1 (fr) 1990-09-19 1991-08-20 Mélangeur statique avec corps en forme de tube

Country Status (5)

Country Link
US (1) US5255974A (fr)
EP (1) EP0478497B1 (fr)
JP (1) JP3122181B2 (fr)
CA (1) CA2051482A1 (fr)
DE (1) DE59101271D1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
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EP0591831B1 (fr) * 1992-09-30 1998-12-30 Tokai Rubber Industries, Ltd. Tuyau multi-couche
US5636981A (en) * 1994-05-19 1997-06-10 Lilly Engineering Company Fuel oil burner
US5516209A (en) * 1994-11-15 1996-05-14 Flint; Theodore R. Disposable static mixing device with a reusable housing
JP3144772B2 (ja) * 1997-01-24 2001-03-12 エスエムシー株式会社 管継手
DE59707278D1 (de) * 1997-01-29 2002-06-20 Sulzer Chemtech Ag Winterthur Modul zu einer statischen Mischeinrichtung für ein verweilzeitkritisches, plastisch fliessfähiges Mischgut
US6623635B2 (en) * 1999-10-15 2003-09-23 Ronald L. Barnes Assembly for purifying water
US6105880A (en) * 1998-01-16 2000-08-22 The Sherwin-Williams Company Mixing block for mixing multi-component reactive material coating systems and an apparatus using same
USRE40407E1 (en) 1999-05-24 2008-07-01 Vortex Flow, Inc. Method and apparatus for mixing fluids
EP1412078B1 (fr) 2001-08-02 2008-10-08 LG Life Sciences Limited Methodes de production de derives de 4-aminomethylene-pyrrolidin-3-one proteges, de gemifloxacine ou d'un de leurs sels
US20030058737A1 (en) * 2001-09-25 2003-03-27 Berry Jonathan Dwight Mixer/flow conditioner
JP2006010063A (ja) * 2004-05-24 2006-01-12 Nippon Steel Corp 管端防食コア付樹脂ライニング鋼管およびその製造方法
US7906581B2 (en) * 2007-09-05 2011-03-15 Xerox Corporation Method, apparatus and system for preparing adhesive-promoter-treated hot melt adhesives in continuous mode
US9079227B2 (en) 2013-04-08 2015-07-14 Ronald L. Barnes Sanitizing and cleaning process and apparatus
GB2537902A (en) * 2015-04-30 2016-11-02 M-Flow Tech Ltd Composite Fluid Conduit Assembly
MX2018016309A (es) 2016-07-05 2019-06-20 Ineos Americas Llc Metodo y aparato para recuperar agentes absorbentes en el tratamiento de gas acido.
US10935171B1 (en) * 2019-09-30 2021-03-02 Tofle Co., Inc. Connecting mechanism and tube assembly

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CH454443A (de) * 1966-05-14 1968-04-15 Seidl Fa Georg Spritzgussmaschine mit im Zylinder angeordnetem Torpedo
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Also Published As

Publication number Publication date
DE59101271D1 (de) 1994-05-05
CA2051482A1 (fr) 1992-03-20
JPH04260430A (ja) 1992-09-16
JP3122181B2 (ja) 2001-01-09
EP0478497A1 (fr) 1992-04-01
US5255974A (en) 1993-10-26

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