WO1989007486A1 - Device for treating material mixtures - Google Patents

Device for treating material mixtures Download PDF

Info

Publication number
WO1989007486A1
WO1989007486A1 PCT/SE1989/000003 SE8900003W WO8907486A1 WO 1989007486 A1 WO1989007486 A1 WO 1989007486A1 SE 8900003 W SE8900003 W SE 8900003W WO 8907486 A1 WO8907486 A1 WO 8907486A1
Authority
WO
WIPO (PCT)
Prior art keywords
treating
rotor
grooves
stator
wings
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/SE1989/000003
Other languages
French (fr)
Inventor
Rolf B. Reinhall
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.)
Valmet AB
Original Assignee
Sunds Defibrator Industries AB
Sunds Defibrator 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 Sunds Defibrator Industries AB, Sunds Defibrator AB filed Critical Sunds Defibrator Industries AB
Priority to AT89901614T priority Critical patent/ATE103839T1/en
Priority to EP89901614A priority patent/EP0400026B1/en
Priority to DE68914441T priority patent/DE68914441T2/en
Publication of WO1989007486A1 publication Critical patent/WO1989007486A1/en
Priority to FI903892A priority patent/FI91487C/en
Priority to NO903487A priority patent/NO172675C/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/272—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed axially between the surfaces of the rotor and the stator, e.g. the stator rotor system formed by conical or cylindrical surfaces
    • B01F27/2722—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed axially between the surfaces of the rotor and the stator, e.g. the stator rotor system formed by conical or cylindrical surfaces provided with ribs, ridges or grooves on one surface
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/272—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed axially between the surfaces of the rotor and the stator, e.g. the stator rotor system formed by conical or cylindrical surfaces
    • B01F27/2723—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed axially between the surfaces of the rotor and the stator, e.g. the stator rotor system formed by conical or cylindrical surfaces the surfaces having a conical shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/27—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices
    • B01F27/272—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed axially between the surfaces of the rotor and the stator, e.g. the stator rotor system formed by conical or cylindrical surfaces
    • B01F27/2724—Mixers with stator-rotor systems, e.g. with intermeshing teeth or cylinders or having orifices with means for moving the materials to be mixed axially between the surfaces of the rotor and the stator, e.g. the stator rotor system formed by conical or cylindrical surfaces the relative position of the stator and the rotor, gap in between or gap with the walls being adjustable

Definitions

  • Device for treating material fixtures ⁇ his invention relates to a device for.treating material mixtures.
  • the device comprises two conically shaped outer and, respectively, inner treating members, which are rotatable relative one another.
  • Organic or inorganic fibre or particle materials can be dispersed in gaseous or fluid medium such as air, steam, water etc. Also chemicals such as colourants, bleaching agents, binding agents etc. can be admixed.
  • Conventional mixing members comprise a number of variants comprising rotating and counter-rotating disc-shaped or conically shaped rotation bodies, which are provided with treating planes of different patterns comprising recesses and elevations, which produce the turbulence and agitation required for the function in question.
  • the mixer then regularly has to be taken out of operation for cleaning, which causes repeated stoppages and results in production disturbances.
  • the present invention eliminates these difficulties, in that the device is provided with mechanical cleaning members, which during operation of the mixer either continuously or intermittently remove material accumulated thereon and thereby maintain the mixer efficiency at maximum level.
  • the principle of the invention can be applied to disc- -shaped as well as conically shaped treating planes.
  • FIG. 1 is a longitudinal section of the device in two different embodiments A and B
  • Fig. 2 is a cross-section of the rotary and stationary treating surfaces, with an axially movable cleaning member placed in the stator, embodiment A
  • Fig. 3 shows an embodiment according to Fig. 2, but with cleaning members inserted also into the rotary treating member, embodiment B.
  • the device according to the embodiment shown comprises a rotor 10 supported by an axle 12 mounted in an axially movable bearing housing 13 and supported at the driving end by an axially movable gear clutch 16, which is rigidly connected to a driving motor 20 via the shaft 22 thereof.
  • the rotor 10 is enclosed by a stator 30, which comprises longitudinal bars 32 and intermediate grooves 36 and is rigidly secured in a stand 40 enclosing the device. Said stand supports by an upper portion the driving motor 20.
  • the bearing housing 13 is supported by a yoke bearing 44 connected to the lower portion of the stand.
  • the rotor 10 is axially movable by means of a- control device 90 atttached to the yoke bearing 44, which device can adjust the bearing housing 13 to the desired axial position and thereby vary the gap between the rotor 10 and stator 30.
  • the fibre material to be treated is supplied through a pipe line 50 opening at the smaller end of the conical rotor 10, where the material by means of a carrier 11 mounted on the rotor is slung out to the inlet opening 14 between rotor 10 and stator 30.
  • the fibre material is caused by bars 18 (Fig. 2) or 70 (Fig. 3) on the rotor 10 to assume a rotation speed, which is substantially the same as that of the rotor, for example 3000 rpm at 50 cps and 3600 rpm at 60 cps.
  • This rotation acts on the fibre mixture with centrifugal forces, which at the example cited amounts to the magnitude 2500-4000 g, by which forces the fibre mixture during its passage through the mixer is pressed against the enclosing stator 30.
  • the fibre mixture is concentrated to a considerably higher density in the fibre layer closest to the stator 30 and the grooves 36 arranged:, in the longitudinal direction.
  • the air following along with the fibre suspension to the greatest part goes off in the grooves 17 of the rotor 10 between the rotor bars 18,70 out to the outlet 15 of the mixer.
  • the concentrated fibre mixture closest to the conically shaped stator surface 30 with the angle is applied with a discharging force in the direction to the outlet 15 corresponding to the - -sine component of maintained centrifugal force.
  • the chemical addition required for the process is supplied either at the inlet 50 or directly between rotor and stator near the feed opening 14 via a number of supply nozzles 3 uniformly distributed over the inlet surface.
  • stato 30 In order to prevent the stator grooves 36 in the manner described from being filled with fibres and, for example, added binding agent, the stato 30 is provided with an axially .
  • movable enclosing outer cleaning member 60 which is provided with wings 62 (Fig. 1 A, Fig. 2). Said wings 62 are adapted to partially fill the grooves 3 ⁇ between the rigidly secured stator bars 32.
  • the movable cleaning member 60 at the example cited is caused to carry out its reciprocatory movement by means of a pressure medium, which is supplied alternatingly to ring pistons 64 and 66,supporting the member,through the passageways 67,68.
  • the frequency of the movement is adjusted to demand for maintaining maximum mixing effect.
  • a Corres ⁇ ponding cleaning device can be applied also on the rotor 10 where an axially movable inner cleaning member 80 is attached to similar ring pistons 8l and 82, which by supply of pressure medium via a swivel 84 mounted on the axle 12 and passageways 85 and 86 in the axle " is caused to carry out a reciprocatory movement.
  • the frequency is also here adjusted to demand. This embodiment is shown in Fig. 1 B.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

The device comprises two conically shaped inner and, respectively, outer treating members (10, 30), which are rotatable relative one another and between themselves form a gap. Through this gap the material is intended to pass. The treating surfaces of the members (10, 30) are provided with bars (18, 70, 32) and grooves (17, 36). A cleaning member (60) is provided to clean the grooves (36) in the outer treating member (30). The cleaning member (60), therefore, is provided with wings, which are fitting into the grooves (36), and the member (60) is axially movable for variation of the depth of the grooves (36). A corresponding inner cleaning member (83) with wings (80) possibly can be arranged in the inner treating member (10).

Description

Device for treating material fixtures ϊhis invention relates to a device for.treating material mixtures. The device comprises two conically shaped outer and, respectively, inner treating members, which are rotatable relative one another.
By means of these treating members different materials are mechanically processed, dispersed and/or mixed. Organic or inorganic fibre or particle materials, for example, can be dispersed in gaseous or fluid medium such as air, steam, water etc. Also chemicals such as colourants, bleaching agents, binding agents etc. can be admixed.
Conventional mixing members comprise a number of variants comprising rotating and counter-rotating disc-shaped or conically shaped rotation bodies, which are provided with treating planes of different patterns comprising recesses and elevations, which produce the turbulence and agitation required for the function in question.
When certain chemicals, for example binding agents are added to fibre mixtures,normally difficulties arise due to coatings on and clogging cf the different groove patterns of the treating members, which coatings and clogging are difficult to remove and after a certain operation time prevent functioning of the mixer.
The mixer then regularly has to be taken out of operation for cleaning, which causes repeated stoppages and results in production disturbances.
The only way of overcoming these interruptions has been to instal an extra number of mixing apparatuses, to which the fibre flow is transferred during the time when the clogged machines are cleaned and restored to operational state.
This procedure is expensive both in respect of manual service and extra investments. The present invention eliminates these difficulties, in that the device is provided with mechanical cleaning members, which during operation of the mixer either continuously or intermittently remove material accumulated thereon and thereby maintain the mixer efficiency at maximum level.
The principle of the invention can be applied to disc- -shaped as well as conically shaped treating planes.
A conical embodiment of a device according to the invention is described in greater detail in the following with reference to the accompanying drawings, in which Fig. 1 is a longitudinal section of the device in two different embodiments A and B, Fig. 2 is a cross-section of the rotary and stationary treating surfaces, with an axially movable cleaning member placed in the stator, embodiment A, Fig. 3 shows an embodiment according to Fig. 2, but with cleaning members inserted also into the rotary treating member, embodiment B.
The device according to the embodiment shown comprises a rotor 10 supported by an axle 12 mounted in an axially movable bearing housing 13 and supported at the driving end by an axially movable gear clutch 16, which is rigidly connected to a driving motor 20 via the shaft 22 thereof.
The rotor 10 is enclosed by a stator 30, which comprises longitudinal bars 32 and intermediate grooves 36 and is rigidly secured in a stand 40 enclosing the device. Said stand supports by an upper portion the driving motor 20. The bearing housing 13 is supported by a yoke bearing 44 connected to the lower portion of the stand.
The rotor 10 is axially movable by means of a- control device 90 atttached to the yoke bearing 44, which device can adjust the bearing housing 13 to the desired axial position and thereby vary the gap between the rotor 10 and stator 30. The fibre material to be treated is supplied through a pipe line 50 opening at the smaller end of the conical rotor 10, where the material by means of a carrier 11 mounted on the rotor is slung out to the inlet opening 14 between rotor 10 and stator 30.
The fibre material is caused by bars 18 (Fig. 2) or 70 (Fig. 3) on the rotor 10 to assume a rotation speed, which is substantially the same as that of the rotor, for example 3000 rpm at 50 cps and 3600 rpm at 60 cps. This rotation acts on the fibre mixture with centrifugal forces, which at the example cited amounts to the magnitude 2500-4000 g, by which forces the fibre mixture during its passage through the mixer is pressed against the enclosing stator 30.
Owing to the high centrifugal force, the fibre mixture is concentrated to a considerably higher density in the fibre layer closest to the stator 30 and the grooves 36 arranged:, in the longitudinal direction. The air following along with the fibre suspension to the greatest part goes off in the grooves 17 of the rotor 10 between the rotor bars 18,70 out to the outlet 15 of the mixer.
The concentrated fibre mixture closest to the conically shaped stator surface 30 with the angle ( is applied with a discharging force in the direction to the outlet 15 corresponding to the - -sine component of maintained centrifugal force.
The chemical addition required for the process is supplied either at the inlet 50 or directly between rotor and stator near the feed opening 14 via a number of supply nozzles 3 uniformly distributed over the inlet surface.
The chemical supplied, which can be in liquid or aerosol state, is thereby spraid instantaneously about the circum¬ ference of the rotor 10 and by maintained centrifugal force slung out to the concentrated fibre layer of the mixer stator where it is absorbed at the passage of the material through the mixer. In order to prevent the stator grooves 36 in the manner described from being filled with fibres and, for example, added binding agent, the stato 30 is provided with an axially. movable enclosing outer cleaning member 60, which is provided with wings 62 (Fig. 1 A, Fig. 2). Said wings 62 are adapted to partially fill the grooves 3β between the rigidly secured stator bars 32. When this outer cleaning member 60 is moved axially in the direction to the outlet 15 of the mixer, the inner flank of the wings 62 is moved radially inward to and past the inner surface of the rigidly secured stator bars 32, whereby the grooves 36 between the bars 32 are filled entirely with the movable wings 62. Fibre and binding agent deposits accumulated in the grooves 36 thereby are pushed out to the gap between the rotor 10 and stator 30a where they by action of the rotor bars 18 are broken off from the wings 62 and removed with the treated material. The outer cleaning member 60 with wings 62 thereafter is moved back to the inlet of the mixer, whereby the groove space 36 is restored, free from previous coatings.
The movable cleaning member 60 at the example cited is caused to carry out its reciprocatory movement by means of a pressure medium, which is supplied alternatingly to ring pistons 64 and 66,supporting the member,through the passageways 67,68.
The frequency of the movement is adjusted to demand for maintaining maximum mixing effect. If required, a Corres¬ ponding cleaning device can be applied also on the rotor 10 where an axially movable inner cleaning member 80 is attached to similar ring pistons 8l and 82, which by supply of pressure medium via a swivel 84 mounted on the axle 12 and passageways 85 and 86 in the axle" is caused to carry out a reciprocatory movement. The frequency is also here adjusted to demand. This embodiment is shown in Fig. 1 B.
The invention, of course, is not restricted to the embodiment shown, but can be varied within the scope of the claims.

Claims

Claims
1. A device for treating material mixtures, comprising two conically shaped inner and, respectively, outer treating members (10,30), which are rotatable relative one another and between themselves form a gap for the passage of the material from an inlet (50) to an outlet (15), where the treating surfaces of the members (10,30) are provided with longitudinal bars (18,70,32) and inter¬ mediate grooves (17.36), c h a r a c t e r i z e d i n that the bottom of the longitudinal grooves (36) in at least the outer treating member (30) is defined by a cleaning member (60) provided with wings (62), which are fitting ir. between the bars (32) of the treating member (30), and the outer cleaning member (60) is axially movable for variation of the'^depth of the grooves (36).
2. A device as defined in claim 1, c h a r a c t e r ¬ i z e d i n that the outer treating member is a stator (30), and the inner treating member is a rotor (10).
3. A device as defined in claim 1 or 2, c h a r a c t ¬ e r i z e d i n that an inner cleaning member (83) also provided with wings (80) is arranged to co-operate with the inner treating member (10), in that its wings (80) are fitting in between the bars (70) of the inner treating member (10), and the inner cleaning member (83) is axially movable.
4. A device as defined in any one of the preceding claims, c h a r a c t e r i z e d i n that the cleaning members (60,83) are supported by ring pistons (64,66,81,82) and moved by means of a pressure medium.
5. A device as defined in any one of the claims 2-4 where the material inlet (50) is located centrally at the narrow portion of the rotor (10), c h a r a c t ¬ e r i z e d i n that the rotor is provided with a carrier (11) intended to sling the material to the gap opening between the rotor (10) and stator (30).
6. A device as defined in claim 5, c h a r a c t e r ¬ i z e d i n that a device for the supply of a treating agent is located in the material inlet (50).
7. A device as defined in any one of the claims 2-5, c h a r c t e r i z e d i n tha€ a device for the supply of treating agent -is located in the stator (30), which supply device has the form of a number of nozzles (34) opening in the gap near its inlet opening (14).
PCT/SE1989/000003 1988-02-09 1989-01-11 Device for treating material mixtures Ceased WO1989007486A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT89901614T ATE103839T1 (en) 1988-02-09 1989-01-11 ARRANGEMENT FOR TREATMENT OF MATERIAL MIXTURES.
EP89901614A EP0400026B1 (en) 1988-02-09 1989-01-11 Device for treating material mixtures
DE68914441T DE68914441T2 (en) 1988-02-09 1989-01-11 ARRANGEMENT FOR TREATING MIXTURES.
FI903892A FI91487C (en) 1988-02-09 1990-08-06 Device for handling material mixtures
NO903487A NO172675C (en) 1988-02-09 1990-08-08 DEVICE FOR TREATMENT OF MATERIAL MIXTURES

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE8800416A SE459904B (en) 1988-02-09 1988-02-09 DEVICE FOR TREATMENT OF VARIOUS MATERIALS BY MECHANICAL PROCESSING AND / OR MIXING
SE8800416-3 1988-02-09

Publications (1)

Publication Number Publication Date
WO1989007486A1 true WO1989007486A1 (en) 1989-08-24

Family

ID=20371310

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1989/000003 Ceased WO1989007486A1 (en) 1988-02-09 1989-01-11 Device for treating material mixtures

Country Status (10)

Country Link
US (1) US5088831A (en)
EP (1) EP0400026B1 (en)
JP (1) JPH03503255A (en)
AU (1) AU615025B2 (en)
CA (1) CA1291987C (en)
DE (1) DE68914441T2 (en)
FI (1) FI91487C (en)
NZ (1) NZ227886A (en)
SE (1) SE459904B (en)
WO (1) WO1989007486A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0606250B2 (en) † 1991-09-05 2000-11-15 Sunds Defibrator Industries Aktiebolag A method and device for treating fibre material

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FI103019B1 (en) * 1994-01-25 1999-04-15 Ahlstroem Oy Process and apparatus for mixing a gaseous chemical in a fiber suspension
DE4433039B4 (en) * 1994-09-16 2006-11-16 Richard Frisse Gmbh Devices for processing dispersions
JPH1029213A (en) * 1996-07-15 1998-02-03 Toray Dow Corning Silicone Co Ltd Liquid material continuous mixing equipment
US6110432A (en) * 1998-06-04 2000-08-29 Southwick; Kenneth J. Collider chamber apparatus and method of use of same
US6855299B1 (en) 1998-06-04 2005-02-15 Kenneth J. Southwick Collider chamber apparatus and method of use of same
US6648500B2 (en) * 1999-04-13 2003-11-18 International Process Equipment And Technology, Inc. Rotary pulsation device
US6210030B1 (en) * 1999-06-15 2001-04-03 Jean-Pierre Ibar Method and apparatus to control viscosity of molten plastics prior to a molding operation
EP1331988B1 (en) * 2000-11-10 2006-06-14 Maelstrom Advanced Process Technologies Ltd Dynamic mixer
DE10148760A1 (en) * 2001-10-02 2003-04-17 Clausthaler Umwelttechnikinsti Flocculation apparatus and method for conditioning colloidal suspensions
SE524465E (en) * 2002-12-12 2007-09-04 Metso Paper Inc Apparatus for mixing a gaseous or liquid medium with a pulp suspension
SE524466E (en) * 2002-12-12 2007-09-04 Metso Paper Inc Apparatus for mixing a gaseous or liquid chemical medium with a pulp suspension
US8313051B2 (en) * 2008-03-05 2012-11-20 Sealed Air Corporation (Us) Process and apparatus for mixing a polymer composition and composite polymers resulting therefrom
US20090252845A1 (en) * 2008-04-03 2009-10-08 Southwick Kenneth J Collider chamber apparatus and method of use
US20100187320A1 (en) * 2009-01-29 2010-07-29 Southwick Kenneth J Methods and systems for recovering and redistributing heat
US20110149678A1 (en) * 2009-10-09 2011-06-23 Southwick Kenneth J Methods of and Systems for Improving the Operation of Electric Motor Driven Equipment
JP5897466B2 (en) * 2010-08-19 2016-03-30 株式会社明治 Atomizer
WO2012023217A1 (en) * 2010-08-19 2012-02-23 株式会社明治 Atomizing device, and performance evaluation method and scale-up method therefor
TWI542407B (en) * 2010-08-19 2016-07-21 Meiji Co Ltd Performance Evaluation Method and Amplification Method of Micro - granulation Device
TWI604885B (en) * 2011-08-19 2017-11-11 明治股份有限公司 Microprocessing equipment
CN114433288B (en) * 2021-12-24 2023-07-18 呼和浩特科林热电有限责任公司 Broken coal and ground coal integrated device
CN117051613B (en) * 2023-08-08 2026-01-30 济南大学 A pipe slurry forming machine
IT202300024357A1 (en) * 2023-11-17 2025-05-17 Marchesini Group Spa EMULSIFIER DEVICE.

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Publication number Priority date Publication date Assignee Title
EP0606250B2 (en) † 1991-09-05 2000-11-15 Sunds Defibrator Industries Aktiebolag A method and device for treating fibre material

Also Published As

Publication number Publication date
US5088831A (en) 1992-02-18
AU615025B2 (en) 1991-09-19
SE459904B (en) 1989-08-21
DE68914441T2 (en) 1994-07-28
FI91487C (en) 1994-07-11
JPH03503255A (en) 1991-07-25
NZ227886A (en) 1991-01-29
FI91487B (en) 1994-03-31
SE8800416D0 (en) 1988-02-09
CA1291987C (en) 1991-11-12
EP0400026B1 (en) 1994-04-06
FI903892A0 (en) 1990-08-06
DE68914441D1 (en) 1994-05-11
AU2933489A (en) 1989-09-06
EP0400026A1 (en) 1990-12-05

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