WO1996014142A1 - A blade for a mixing device - Google Patents

A blade for a mixing device Download PDF

Info

Publication number
WO1996014142A1
WO1996014142A1 PCT/NO1994/000174 NO9400174W WO9614142A1 WO 1996014142 A1 WO1996014142 A1 WO 1996014142A1 NO 9400174 W NO9400174 W NO 9400174W WO 9614142 A1 WO9614142 A1 WO 9614142A1
Authority
WO
WIPO (PCT)
Prior art keywords
blade
particles
motion
masses
thrown
Prior art date
Application number
PCT/NO1994/000174
Other languages
French (fr)
Inventor
Geir Nordahl
Original Assignee
Geir Nordahl
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
Priority to NO931642A priority Critical patent/NO177415C/en
Priority to ES94932180T priority patent/ES2142415T3/en
Priority to JP8515213A priority patent/JPH09510661A/en
Priority to PCT/NO1994/000174 priority patent/WO1996014142A1/en
Priority to DE69422732T priority patent/DE69422732T2/en
Priority to CZ19962268A priority patent/CZ292426B6/en
Priority to RU96116150A priority patent/RU2121394C1/en
Priority to UA96072997A priority patent/UA29496C2/en
Priority to PL94315251A priority patent/PL176493B1/en
Priority to AU12850/95A priority patent/AU680331B2/en
Application filed by Geir Nordahl filed Critical Geir Nordahl
Priority to DK94932180T priority patent/DK0738182T3/en
Priority to BR9408468A priority patent/BR9408468A/en
Priority to HU9602102A priority patent/HU221158B1/en
Priority to CA002180136A priority patent/CA2180136C/en
Priority to PT94932180T priority patent/PT738182E/en
Priority to AT94932180T priority patent/ATE188886T1/en
Priority to EP94932180A priority patent/EP0738182B1/en
Publication of WO1996014142A1 publication Critical patent/WO1996014142A1/en
Priority to US09/262,408 priority patent/US5984520A/en
Priority to GR990402706T priority patent/GR3032385T3/en

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
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B01F27/1123—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades sickle-shaped, i.e. curved in at least one direction
    • 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
    • B01F27/60—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis
    • B01F27/70—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms
    • B01F27/701—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms comprising two or more shafts, e.g. in consecutive mixing chambers
    • B01F27/706—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a horizontal or inclined axis with paddles, blades or arms comprising two or more shafts, e.g. in consecutive mixing chambers with all the shafts in the same receptacle
    • 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
    • B01F27/05—Stirrers
    • B01F27/11—Stirrers characterised by the configuration of the stirrers
    • B01F27/112—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades
    • B01F27/1125—Stirrers characterised by the configuration of the stirrers with arms, paddles, vanes or blades with vanes or blades extending parallel or oblique to the stirrer axis

Definitions

  • the present invention is related to a blade for a 5 mixing device, according to the preamble of the claims.
  • Mixing devices of this kind are used within a number of fields for mixing two or more different substances of particles or liquids or a combination of such, to a desired degree of homogeneousness.
  • the different substances are supplied in amounts 0 which are metered to a specified degree.
  • Such substances may be tow or more liquids to be mixed, two or more particles or particles to be added and mixed with liquids.
  • the substances to be mixed have greater or smaller differences in nature and condition.
  • Such mixing devices also are used for drying or freezing particles, set out as separate processes or as part of a mixing process.
  • Mixing devices of the above mentioned type normally operate with blades or shovels secured to two parallel rotors, o rotating in opposite direction.
  • the shape and the arrangement of the blades causes the masses to be thrown up thereby to be mixed and simultaneously transported forwards in the mixing device. It here certainly is important that the so-called casting curvatures is optimized, thereby to achieve the best possible mixing 5 simultaneously with the desired forward transportation.
  • figure 1 discloses schematically a mixing device having two rotors, in an axial view, figure 2 discloses a side view towards the rotor axis of one blade form and figure 3 discloses a corresponding view of a modified blade form.
  • a blade 1 for example as part of a circular s pipe
  • such pipe conveniently may be divided into four segments, each corresponding to 90° and where each segment is secured to the rotor as disclosed in figure 2, turned an angle a in relation to the rotor axis.
  • the angle ⁇ suitably may be 20° which means that part of the masses are influenced by the front part 3 of the o blade and one part is influenced of the rear part 4.
  • the curved form of the blade provides a substantial dispersal of the masses being thrown up and partly also a transportation backwards in relation to the transportation direction of the mixing device, namely of the masses which are influenced of the rear part 4.
  • the outer circumference of the blade suitably is bent up to a flange 2 or a flange 2 is secured to the blade, as a continuous curvature or as a obtuse angle to the blade.

Abstract

Blade for a mixing device, especially for the mixing of different particles or different liquids, for the arrangement on substantially horizontal rotors, where each blade comprises a first surface with a curvature facing the direction of the motion for the particles and in the radial direction the blades shape has straight lines arranged perpendicularly to the rotor axis, where the curved blade comprises a first portion (3) facing in the direction of motion of the masses, a second, substantially smaller portion (4) facing opposite the direction of motion, and a portion lying in between and connecting the two aforementioned portions, extending substantially parallel with the rotor axis, in such a way that the substantial portion of the masses are thrown forwards, whereas a smaller portion is thrown radially outwards and respectively backwards, the particles thereby being mixed with particles being thrown forwards from the following blade.

Description

A Blade for a Mixing Device
The present invention is related to a blade for a 5 mixing device, according to the preamble of the claims.
Mixing devices of this kind are used within a number of fields for mixing two or more different substances of particles or liquids or a combination of such, to a desired degree of homogeneousness. The different substances are supplied in amounts 0 which are metered to a specified degree. Such substances may be tow or more liquids to be mixed, two or more particles or particles to be added and mixed with liquids. The substances to be mixed have greater or smaller differences in nature and condition. s Such mixing devices also are used for drying or freezing particles, set out as separate processes or as part of a mixing process.
Mixing devices of the above mentioned type normally operate with blades or shovels secured to two parallel rotors, o rotating in opposite direction. The shape and the arrangement of the blades causes the masses to be thrown up thereby to be mixed and simultaneously transported forwards in the mixing device. It here certainly is important that the so-called casting curvatures is optimized, thereby to achieve the best possible mixing 5 simultaneously with the desired forward transportation.
Well known are flat blades arranged in different positions on the rotor axis. There has since long further been made attempts to change the angle of the blades in relation to the rotor axis, as well as other parameters such as the number o of revolutions, the length of the blades etc., to optimize the mixing process.
It has now been found that the mixing process may be further optimized by means of amending the shape of the blades, simultaneously also other advantages are achieved. 5 These advantages are achieved with the blade according to the present invention as defined with the features stated in the claims.
In the drawing figure 1 discloses schematically a mixing device having two rotors, in an axial view, figure 2 discloses a side view towards the rotor axis of one blade form and figure 3 discloses a corresponding view of a modified blade form.
By forming a blade 1 for example as part of a circular s pipe, such pipe conveniently may be divided into four segments, each corresponding to 90° and where each segment is secured to the rotor as disclosed in figure 2, turned an angle a in relation to the rotor axis. The angle α suitably may be 20° which means that part of the masses are influenced by the front part 3 of the o blade and one part is influenced of the rear part 4. The curved form of the blade provides a substantial dispersal of the masses being thrown up and partly also a transportation backwards in relation to the transportation direction of the mixing device, namely of the masses which are influenced of the rear part 4. s The outer circumference of the blade suitably is bent up to a flange 2 or a flange 2 is secured to the blade, as a continuous curvature or as a obtuse angle to the blade.
Masses which are thrown radially outward along the blade 1, hit the flange 2 and thereby change their casting path. o Furthermore it is important that the mass thrown radially outwards along the blade 1 to a high degree will hit the flange 2 and thereby change its direction instead of hitting the bottom of the container of the mixing. This means that the wearing of the bottom of the container is decreased, which is of substantial 5 importance, depending on the masses used in the process.
Figure 3 discloses che atically another embodiment of a curved blade, namely in a cross section not as a part of a circle, but as a curved surface where the rear part 4 still is maintained to achieve a larger distribution of masses, also o stationary and partly backwards in relation to the rotor axis and the transportation direction. As it is disclosed in the drawing it is further important to maintain a blade with a curvature thereby to achieve a large distribution of the masses and an optimized, high casting curvature 5, as disclosed in figure 1. 5

Claims

P a t e n t C l a i m s
5 1. Blade for a mixing device, especially for the mixing of different particles or different liquids, for the arrangement on substantially horizontal rotors, where each blade comprises a first surface with a curvature facing the direction of the motion for the particles and in the radial direction the blades ιo shape has straight lines arranged perpendicularly to the rotor axis, CHARACTERIZED IN the curved blade comprising a first portion (3) facing in the direction of motion of the masses, a second, substantially smaller portion (4) facing opposite the direction of motion, and a portion lying in between and connec- i5 ting the two aforementioned portions, extending substantially parallel with the rotor axis, in such a way that the substantial portion of the masses are thrown forwards, whereas a smaller portion is thrown radially outwards and respectively backwards, the particles thereby being mixed with particles being thrown
20 forwards from the following blade.
2. Blade according to claim 1, CHARACTERIZED IN the outer circumference of the blade comprising a flange (2) which creates an obtuse angle with the rest of the blade in a radial direction, pointing in the direction of motion and which extends 5 substantially along the entire axial length of the blades.
0
5
PCT/NO1994/000174 1994-11-03 1994-11-03 A blade for a mixing device WO1996014142A1 (en)

Priority Applications (19)

Application Number Priority Date Filing Date Title
NO931642A NO177415C (en) 1994-11-03 1993-05-05 Mixes with double curved blades
CA002180136A CA2180136C (en) 1994-11-03 1994-11-03 A blade for a mixing device
PCT/NO1994/000174 WO1996014142A1 (en) 1994-11-03 1994-11-03 A blade for a mixing device
DE69422732T DE69422732T2 (en) 1994-11-03 1994-11-03 MIXER WITH STIRRING ELEMENTS
CZ19962268A CZ292426B6 (en) 1994-11-03 1994-11-03 Blade for a mixing device
RU96116150A RU2121394C1 (en) 1994-11-03 1994-11-03 Mixing device blade
UA96072997A UA29496C2 (en) 1994-11-03 1994-11-03 rotor for mixing devices
DK94932180T DK0738182T3 (en) 1994-11-03 1994-11-03 Blending device with leaves
AU12850/95A AU680331B2 (en) 1994-11-03 1994-11-03 A blade for a mixing device
ES94932180T ES2142415T3 (en) 1994-11-03 1994-11-03 BLADES MIXING DEVICE.
PL94315251A PL176493B1 (en) 1994-11-03 1994-11-03 Blade of a mixing apparatus
BR9408468A BR9408468A (en) 1994-11-03 1994-11-03 Blade for a mixing device
HU9602102A HU221158B1 (en) 1994-11-03 1994-11-03 A blade for mixing devices
JP8515213A JPH09510661A (en) 1994-11-03 1994-11-03 Blades for mixing equipment
PT94932180T PT738182E (en) 1994-11-03 1994-11-03 MIXING DEVICE USING PLATES
AT94932180T ATE188886T1 (en) 1994-11-03 1994-11-03 MIXER WITH STIRRING ELEMENTS
EP94932180A EP0738182B1 (en) 1994-11-03 1994-11-03 Mixing device using blades
US09/262,408 US5984520A (en) 1994-11-03 1999-03-04 Blade for a mixing device
GR990402706T GR3032385T3 (en) 1994-11-03 2000-01-20 A blade for a mixing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/NO1994/000174 WO1996014142A1 (en) 1994-11-03 1994-11-03 A blade for a mixing device

Publications (1)

Publication Number Publication Date
WO1996014142A1 true WO1996014142A1 (en) 1996-05-17

Family

ID=19907752

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NO1994/000174 WO1996014142A1 (en) 1994-11-03 1994-11-03 A blade for a mixing device

Country Status (18)

Country Link
EP (1) EP0738182B1 (en)
JP (1) JPH09510661A (en)
AT (1) ATE188886T1 (en)
AU (1) AU680331B2 (en)
BR (1) BR9408468A (en)
CA (1) CA2180136C (en)
CZ (1) CZ292426B6 (en)
DE (1) DE69422732T2 (en)
DK (1) DK0738182T3 (en)
ES (1) ES2142415T3 (en)
GR (1) GR3032385T3 (en)
HU (1) HU221158B1 (en)
NO (1) NO177415C (en)
PL (1) PL176493B1 (en)
PT (1) PT738182E (en)
RU (1) RU2121394C1 (en)
UA (1) UA29496C2 (en)
WO (1) WO1996014142A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO177415C (en) * 1994-11-03 1995-09-13 Geir Nordahl Mixes with double curved blades
DK2999544T3 (en) 2013-05-22 2019-07-01 Waister As SUBSTANCE-GRIDGING DEVICE

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0131885A2 (en) * 1983-07-12 1985-01-23 Wacker-Chemie GmbH Device to carry out a radical polymerisation, and its use
NO176552B (en) * 1990-12-06 1995-01-16 Geir Nordahl Continuous mixer
NO177415B (en) * 1994-11-03 1995-06-06 Geir Nordahl Mixes with double curved blades

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2525362C3 (en) * 1975-06-06 1979-12-13 Hans 4930 Detmold Kimmel Mixing blades on a rotating mixing tool
DE2803407C2 (en) * 1978-01-26 1982-12-02 Hans 4930 Detmold Kimmel Stirring tool

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0131885A2 (en) * 1983-07-12 1985-01-23 Wacker-Chemie GmbH Device to carry out a radical polymerisation, and its use
NO176552B (en) * 1990-12-06 1995-01-16 Geir Nordahl Continuous mixer
NO177415B (en) * 1994-11-03 1995-06-06 Geir Nordahl Mixes with double curved blades

Also Published As

Publication number Publication date
GR3032385T3 (en) 2000-04-27
BR9408468A (en) 1997-09-16
PL176493B1 (en) 1999-06-30
CZ226896A3 (en) 1997-03-12
NO931642D0 (en) 1993-05-05
AU680331B2 (en) 1997-07-24
NO177415C (en) 1995-09-13
ES2142415T3 (en) 2000-04-16
RU2121394C1 (en) 1998-11-10
HU9602102D0 (en) 1996-11-28
CZ292426B6 (en) 2003-09-17
CA2180136C (en) 2006-08-29
DE69422732D1 (en) 2000-02-24
EP0738182B1 (en) 2000-01-19
CA2180136A1 (en) 1996-05-17
DK0738182T3 (en) 2000-05-01
NO931642L (en) 1994-11-07
HUT76177A (en) 1997-07-28
PT738182E (en) 2000-06-30
AU1285095A (en) 1996-05-31
DE69422732T2 (en) 2000-07-06
ATE188886T1 (en) 2000-02-15
EP0738182A1 (en) 1996-10-23
HU221158B1 (en) 2002-08-28
NO177415B (en) 1995-06-06
UA29496C2 (en) 2000-11-15
JPH09510661A (en) 1997-10-28

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