EP2428341A2 - Mixer axis for dual axis concrete mixer, and dual axis concrete mixer - Google Patents

Mixer axis for dual axis concrete mixer, and dual axis concrete mixer Download PDF

Info

Publication number
EP2428341A2
EP2428341A2 EP11179361A EP11179361A EP2428341A2 EP 2428341 A2 EP2428341 A2 EP 2428341A2 EP 11179361 A EP11179361 A EP 11179361A EP 11179361 A EP11179361 A EP 11179361A EP 2428341 A2 EP2428341 A2 EP 2428341A2
Authority
EP
European Patent Office
Prior art keywords
mixer
mixing
axis
attached
fastening point
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.)
Granted
Application number
EP11179361A
Other languages
German (de)
French (fr)
Other versions
EP2428341A3 (en
EP2428341B1 (en
Inventor
Timo Suutarinen
Mikko Henriksson
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.)
Elematic Oyj
Original Assignee
Elematic Oyj
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 Elematic Oyj filed Critical Elematic Oyj
Publication of EP2428341A2 publication Critical patent/EP2428341A2/en
Publication of EP2428341A3 publication Critical patent/EP2428341A3/en
Application granted granted Critical
Publication of EP2428341B1 publication Critical patent/EP2428341B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/10—Mixing in containers not actuated to effect the mixing
    • B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
    • B28C5/14—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a horizontal or substantially horizontal axis
    • B28C5/146—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a horizontal or substantially horizontal axis with several stirrers with parallel shafts in one container
    • 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
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/071—Fixing of the stirrer to the shaft
    • 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
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0723—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis oblique with respect to the rotating axis
    • 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
    • B01F27/07—Stirrers characterised by their mounting on the shaft
    • B01F27/072—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis
    • B01F27/0724—Stirrers characterised by their mounting on the shaft characterised by the disposition of the stirrers with respect to the rotating axis directly mounted on the rotating axis
    • 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
    • B01F27/114—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections
    • B01F27/1144—Helically shaped stirrers, i.e. stirrers comprising a helically shaped band or helically shaped band sections with a plurality of blades following a helical path on a shaft or a blade support
    • 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
    • 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
    • B01F27/702—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 intermeshing paddles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
    • B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
    • B28C5/10—Mixing in containers not actuated to effect the mixing
    • B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
    • B28C5/14—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a horizontal or substantially horizontal axis
    • B28C5/148—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a horizontal or substantially horizontal axis the stirrer shaft carrying a plurality of radially extending mixing bars

Definitions

  • the invention relates to the mixer axis of a dual axis mixer used in the production of concrete mix, as well as to a dual axis mixer provided with this kind of mixer axis. More precisely, the invention relates to the positioning and quantity of mixer elements arranged on the mixer axis.
  • An apparatus used in the production of concrete mix is a dual axis mixer where the concrete mix to be produced is mixed by intermediation of mixing means attached to two axes contained in the mixing tank.
  • the mixing axes are arranged horizontally in the mixing tank.
  • the mixing means attached to the mixing axes comprise mixer shafts fastened to the mixing axes, said shafts protruding essentially radially from the mixing axis, as well as mixer blades attached to the shaft ends.
  • the mixing effect obtained in the concrete mix to be produced is typically better and more efficient than the mixing effect obtained with conventional single axis mixers, which means that by using dual axis mixers, larger quantities of concrete mix can be produced more rapidly.
  • the most essential objective in the development of concrete mixers is a faster production process for concrete mix, and said objective is achieved by increasing the capacity of the mixer by more efficient mixing of the concrete mix. Said objective is emphasized particularly in the production of concrete mixes requiring longer mixing periods, such as polymer mixes. With dual axis mixers, it has been attempted to reach said objective by increasing the rotation speeds of the mixing axes of the mixer.
  • an increase in the capacity of the dual axis mixer is achieved by increasing the number of the mixer elements in the mixer, by altering the shape of the mixer elements and by positioning said mixer elements on the mixing axis.
  • the number of the mixer elements connected to the mixing axes i.e. the number of the mixing shafts attached to the mixing axis and of the mixer blades attached to said shafts has been increased in comparison with conventional arrangements. Moreover, the increase in the mixer elements has been realized at certain fastening points of said mixer elements, and the number of blades attached to a single shaft has likewise been increased.
  • mixer elements are attached at nine successive mixer element fastening points, so that at the first, second and last fastening point, the total area of the mixer blades of the mixer elements connected to a single fastening point is substantially four times as large as the total area of the mixer blades connected to a single fastening point at the third, fourth, sixth and eighth fastening points.
  • the position of the mixer blades attached to the mixing shafts of the mixing axes is such that the mixer blades of the mixing shafts attached to the first two fastening points of the first end of the first mixing axis tend to shift the concrete to be mixed further away from the first end of the first mixing axis.
  • the rest of the mixer blades attached to the first mixing axis by intermediation of mixing shafts tend to shift the concrete to be mixed towards said first end of the first mixer axis.
  • the positions of the mixer blades of the second mixing axis of the mixer are opposite with respect to the first mixing axis.
  • the mixing axis according to the invention is characterized by what is set forth in the characterizing part of claim 1
  • the dual axis mixer according to the invention is characterized by what is set forth in the characterizing part of claim 7.
  • the mixing axes of the dual axis mixer illustrated in the drawings comprise two adjacent mixing axes 1 and 2, positioned horizontally in the mixing tank of the mixer, said mixing axes extending through the end surfaces of the mixing tank of the mixer.
  • part of the mixing shafts 3 are provided, in connection with the first mixer blade 4, also with a second mixer blade 4', said second mixer blade being arranged in a space left in between the first mixer blade and the mixing axis, so that the mixer blades cover substantially the whole length of the mixing shaft.
  • the mixing shafts 3 are attached to nine different fastening points A-I located on the mixing axes 1 and 2, said fastening points being best visible in Figure 1C . From Figure 1C , it is also seen that in the mixing axis 2, the order of the fastening points of the mixing axis 1 is reversed. At some of the fastening points, in addition to a first mixing shaft 3, there also is attached a second mixing shaft 3' to extend from the mixing axes 1 and 2 to the opposite direction with respect to the first mixing shaft.
  • each of said mixing shafts being provided with two mixer blades 4, 4'.
  • the mixer elements and particularly the mixer blades 4, 4' attached to said fastening points A and B, said fastening points being located in the vicinity of the edge of the mixing tank of the mixer, are positioned so that as the mixing axes rotate, said mixer blades shift the concrete to be mixed substantially away from the edge of the mixing tank.
  • each of the fastening points C and D of the mixing axes 1 and 2 there is attached only one mixing shaft 3, said mixing shaft being at the outer end provided with one mixer blade 4.
  • the mixer blades of the mixer elements located at the fastening points C-I are all positioned so that as the mixing axes rotate, they shift the concrete mix to a substantially opposite direction with respect to the mixer blades of the mixer elements of the fastening points A and B.
  • the mixer elements of the mixing axes 1 and 2 are arranged in a mutually reversed order, they also rotate in mutually opposite directions.
  • the mixing axis of the rotary axis 1 rotates clockwise
  • the mixing axis of the rotary axis 2 rotates counterclockwise.
  • the total area of the mixer blades 4, 4' connected to each individual fastening point is four times as large as the total area of the mixer blades connected to each individual fastening point at the fastening points C, D, F and H.
  • the total area of the mixer blades connected to both individual fastening points is twice as large as the total area of the mixer blades connected to each individual fastening point at the fastening points C, D, F or H.
  • the mutual angle of the successive mixing shafts 3 on the cross-sectional plane of the mixing axis is 60 degrees, which is advantageously achieved by using a rod that is hexagonal in cross-section as axes of mixing axes 1, 2.
  • the mutual phase shift between the first mixing axis 1 and the second mixing axis 2 is advantageously 30 degrees.
  • the angle of the mixer blades in relation to the rotary direction, i.e. to the cross-sectional plane of the mixing axes 1, 2 at the mixing shaft 3 is advantageously 35 degrees.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Accessories For Mixers (AREA)

Abstract

A mixing axis (1, 2) of a dual axis mixer for concrete mix, said mixing axis comprising several mixer elements attached to the mixing axis, said mixer elements including a mixing shaft (3) protruding substantially radially from the mixing axis, and at least one mixer blade (4) attached to the outer end of the mixing shaft, so that on that section of the mixing axis (1, 2) of the dual axis mixer that is located in the mixing tank, mixer elements are attached at nine successive mixer element fastening points (A-I), so that in the first, second and last fastening point (A, B and I), the total area of the mixer blades (4, 4') connected to a single fastening point is substantially four times as large as the total area of the mixer blades (4) connected to a single fastening point in the third, fourth, sixth and eighth fastening point (C, D, F and H). The invention also relates to a dual axis mixer provided with a described mixing axis.

Description

  • The invention relates to the mixer axis of a dual axis mixer used in the production of concrete mix, as well as to a dual axis mixer provided with this kind of mixer axis. More precisely, the invention relates to the positioning and quantity of mixer elements arranged on the mixer axis.
  • An apparatus used in the production of concrete mix is a dual axis mixer where the concrete mix to be produced is mixed by intermediation of mixing means attached to two axes contained in the mixing tank. In these dual axis mixers, the mixing axes are arranged horizontally in the mixing tank. Generally the mixing means attached to the mixing axes comprise mixer shafts fastened to the mixing axes, said shafts protruding essentially radially from the mixing axis, as well as mixer blades attached to the shaft ends.
  • With dual axis mixers, the mixing effect obtained in the concrete mix to be produced is typically better and more efficient than the mixing effect obtained with conventional single axis mixers, which means that by using dual axis mixers, larger quantities of concrete mix can be produced more rapidly.
  • The most essential objective in the development of concrete mixers, including dual axis mixers, is a faster production process for concrete mix, and said objective is achieved by increasing the capacity of the mixer by more efficient mixing of the concrete mix. Said objective is emphasized particularly in the production of concrete mixes requiring longer mixing periods, such as polymer mixes. With dual axis mixers, it has been attempted to reach said objective by increasing the rotation speeds of the mixing axes of the mixer.
  • In a solution according to the present invention, an increase in the capacity of the dual axis mixer is achieved by increasing the number of the mixer elements in the mixer, by altering the shape of the mixer elements and by positioning said mixer elements on the mixing axis.
  • In a solution according to the invention, the number of the mixer elements connected to the mixing axes, i.e. the number of the mixing shafts attached to the mixing axis and of the mixer blades attached to said shafts has been increased in comparison with conventional arrangements. Moreover, the increase in the mixer elements has been realized at certain fastening points of said mixer elements, and the number of blades attached to a single shaft has likewise been increased.
  • In a solution according to the invention, on that section of the mixing axis that is located in the mixing tank of the dual axis mixer, mixer elements are attached at nine successive mixer element fastening points, so that at the first, second and last fastening point, the total area of the mixer blades of the mixer elements connected to a single fastening point is substantially four times as large as the total area of the mixer blades connected to a single fastening point at the third, fourth, sixth and eighth fastening points.
  • In a preferred embodiment according to the invention, at least on that section of the first mixing axis, and advantageously also of the second mixing axis, that is located in the mixing tank of the dual axis mixer, there are attached 14 mixer elements at nine different fastening points.
  • In a solution according to the invention, also the position of the mixer blades attached to the mixing shafts of the mixing axes is such that the mixer blades of the mixing shafts attached to the first two fastening points of the first end of the first mixing axis tend to shift the concrete to be mixed further away from the first end of the first mixing axis. As for the rest of the mixer blades attached to the first mixing axis by intermediation of mixing shafts tend to shift the concrete to be mixed towards said first end of the first mixer axis. The positions of the mixer blades of the second mixing axis of the mixer are opposite with respect to the first mixing axis.
  • According to performed experiments, by using this kind of dual axis mixer of to the invention, there is achieved a rise of about 60% in the capacity in comparison with conventional dual axis mixers, and the increase in the power consumed by the mixer elements is only about 15% in comparison with conventional solutions.
  • More precisely, the mixing axis according to the invention is characterized by what is set forth in the characterizing part of claim 1, and the dual axis mixer according to the invention is characterized by what is set forth in the characterizing part of claim 7.
  • The invention is described in more detail below, by way of example, with reference to the appended drawings, where
    • Figure 1A illustrates the mixing axes of a dual axis mixer according to the invention, seen in a three-dimensional, isometric view,
    • Figure 1B illustrates the mixing axes of the dual axis mixer of Figure 1A, viewed from below, and
    • Figure 1C illustrates the mixing axes of the dual axis mixer of Figure 1A, viewed from the side.
  • The mixing axes of the dual axis mixer illustrated in the drawings comprise two adjacent mixing axes 1 and 2, positioned horizontally in the mixing tank of the mixer, said mixing axes extending through the end surfaces of the mixing tank of the mixer. On that section of the mixing axes 1 and 2 that is located in the mixing tank, there are attached several mixer elements, each of said mixer elements comprising a mixing shaft 3 protruding radially from the mixing axis and a first mixer blade 4 attached in the area of the outer end of the mixing shaft. In addition, part of the mixing shafts 3 are provided, in connection with the first mixer blade 4, also with a second mixer blade 4', said second mixer blade being arranged in a space left in between the first mixer blade and the mixing axis, so that the mixer blades cover substantially the whole length of the mixing shaft.
  • In the solution of the invention illustrated in the drawings, the mixing shafts 3 are attached to nine different fastening points A-I located on the mixing axes 1 and 2, said fastening points being best visible in Figure 1C. From Figure 1C, it is also seen that in the mixing axis 2, the order of the fastening points of the mixing axis 1 is reversed. At some of the fastening points, in addition to a first mixing shaft 3, there also is attached a second mixing shaft 3' to extend from the mixing axes 1 and 2 to the opposite direction with respect to the first mixing shaft.
  • At both of the fastening points A and B of the mixing axes 1 and 2, there are attached two mixing shafts 3, 3' that are pointed to opposite directions, each of said mixing shafts being provided with two mixer blades 4, 4'. The mixer elements and particularly the mixer blades 4, 4' attached to said fastening points A and B, said fastening points being located in the vicinity of the edge of the mixing tank of the mixer, are positioned so that as the mixing axes rotate, said mixer blades shift the concrete to be mixed substantially away from the edge of the mixing tank.
  • At each of the fastening points C and D of the mixing axes 1 and 2, there is attached only one mixing shaft 3, said mixing shaft being at the outer end provided with one mixer blade 4. The mixer blades of the mixer elements located at the fastening points C-I are all positioned so that as the mixing axes rotate, they shift the concrete mix to a substantially opposite direction with respect to the mixer blades of the mixer elements of the fastening points A and B.
  • At the fastening point E of the mixing axes 1 and 2, there are attached two mixing shafts 3, 3', pointing to opposite directions, each of said shafts being at the outer end provided with one mixer blade 4.
  • At the fastening point F of the mixing axes 1 and 2, there is attached one mixing shaft 3, said mixing shaft being at the outer end provided with one mixer blade 4.
  • At the fastening point G of the mixing axes 1 and 2, there are attached two mixing shafts 3, 3', pointing to opposite directions, each of said shafts being at the outer end provided with one mixer blade 4.
  • At the fastening point H of the mixing axes 1 and 2, there is attached one mixing shaft 3, said mixing shaft being at the outer end provided with one mixer blade 4.
  • At the fastening point I of the mixing axes 1 and 2, there are attached two mixing shafts 3, 3', pointing to opposite directions, each of said shafts being provided with two mixer blades 4, 4'.
  • Thus, in the example according to the invention and illustrated in the drawings, to each of the mixing axes 1, 2 of the dual axis mixer, there are attached 14 mixer elements at nine different mixer element fastening points A-I.
  • As for the embodiment of the invention illustrated in the drawings, it is pointed out that because the mixer elements of the mixing axes 1 and 2 are arranged in a mutually reversed order, they also rotate in mutually opposite directions. In the example of the Figures, the mixing axis of the rotary axis 1 rotates clockwise, whereas the mixing axis of the rotary axis 2 rotates counterclockwise.
  • In the described arrangement according to the invention, at the fastening points A, B and I, the total area of the mixer blades 4, 4' connected to each individual fastening point is four times as large as the total area of the mixer blades connected to each individual fastening point at the fastening points C, D, F and H. Moreover, at the fastening points E and G, the total area of the mixer blades connected to both individual fastening points is twice as large as the total area of the mixer blades connected to each individual fastening point at the fastening points C, D, F or H.
  • In the solution according to the invention illustrated in the drawings, the mutual angle of the successive mixing shafts 3 on the cross-sectional plane of the mixing axis is 60 degrees, which is advantageously achieved by using a rod that is hexagonal in cross-section as axes of mixing axes 1, 2.
  • In addition, the mutual phase shift between the first mixing axis 1 and the second mixing axis 2 is advantageously 30 degrees.
  • The angle of the mixer blades in relation to the rotary direction, i.e. to the cross-sectional plane of the mixing axes 1, 2 at the mixing shaft 3 is advantageously 35 degrees.
  • According to performed experiments, by using a dual axis mixer according to the invention, there is achieved a capacity rise of about 60% in comparison with conventional dual axis mixers, and the increase in the power consumed by the mixer elements is only about 15% in comparison with conventional arrangements.

Claims (8)

  1. A mixing axis (1, 2) of a dual axis concrete mixer, said mixing axis comprising plurality of mixer elements attached to a mixing axis, said mixer elements comprising a mixing shaft (3) protruding essentially radially from the mixing axis, and at least one mixer blade (4) attached to the outer end of the mixing shaft, characterized in that on that section of the mixing axis (1, 2) of the dual axis mixer that is located in the mixing tank, mixer elements are attached at nine successive mixer element fastening points (A-I), so that in the first, second and last fastening point (A, B and I), the total area of the mixer blades (4, 4') connected to a single fastening point is substantially four times as large as the total area of the mixer blades (4) connected to a single fastening point in the third, fourth, sixth and eighth fastening point (C, D, F and H).
  2. A mixing axis (1, 2) according to claim 1, characterized in that at the fifth and seventh fastening points (E and G), on that section of the mixing axis (1, 2) that is located in the mixing tank, the total area of the mixer blades (4) connected to a single fastening point is substantially twice as large as the total area of the mixer blades (4) connected to a single fastening point at the third, fourth, sixth and eighth (C, D, F and H) fastening point.
  3. A mixing axis (1, 2) according to claim 1 or 2, characterized in that the number of the mixer elements attached to that section of the mixing axis (1, 2) that is positioned on the section located in the mixing tank is 14.
  4. A mixing axis according to any of the claims 1 - 3, characterized in that at the first end area of that section of the mixing axis (1, 2) that is located in the mixing tank, at each of the two first fastening points and at the last fastening point (A, B and I) of the mixer elements, there are positioned two mixer elements extending to opposite directions.
  5. A mixing axis (1, 2) according to any of the claims 1 - 4, characterized in that at each of the fifth and seventh mixer element fastening points (E and G) of that section of the mixing axis (1, 2) that is located in the mixing tank, there are positioned two mixer elements extending to opposite directions.
  6. A mixing axis (1, 2) according to any of the claims 2-5, characterized in that the mixer elements attached to two first mixer element fastening points (A and B) of that section of the mixing axis (1, 2) that is located in the mixing tank and/or to the last mixer element fastening point (I) comprise two adjacent mixer blades (4, 4') attached to one and the same mixing shaft (3, 3'), said adjacent mixer blades substantially covering the whole length of the mixing shaft.
  7. A dual axis concrete mixer, characterized in that the dual axis mixer is provided with at least one mixing axis (1, 2) according to claims 1 - 6.
  8. A dual axis mixer according to claim 7, characterized in that the dual axis mixer is provided with two adjacent mixing axes (1, 2) according to claims 1 - 6, so that the sections of the mixer elements of the adjacent mixing axes that are located in the mixing tank are on the mixing axes placed in a mutually reversed order.
EP11179361.8A 2010-09-09 2011-08-30 Mixer axis for dual axis concrete mixer, and dual axis concrete mixer Not-in-force EP2428341B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20105937A FI122572B (en) 2010-09-09 2010-09-09 Concrete mixing double axis mixer shaft and concrete mixing double axis mixer

Publications (3)

Publication Number Publication Date
EP2428341A2 true EP2428341A2 (en) 2012-03-14
EP2428341A3 EP2428341A3 (en) 2014-04-16
EP2428341B1 EP2428341B1 (en) 2014-10-01

Family

ID=42829673

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11179361.8A Not-in-force EP2428341B1 (en) 2010-09-09 2011-08-30 Mixer axis for dual axis concrete mixer, and dual axis concrete mixer

Country Status (4)

Country Link
EP (1) EP2428341B1 (en)
CN (1) CN102416668B (en)
ES (1) ES2518090T3 (en)
FI (1) FI122572B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104589502A (en) * 2015-01-23 2015-05-06 长安大学 Double-horizontal-shaft continuous stirrer with oppositely arranged inner and outer stirring units
CN118360939A (en) * 2024-06-19 2024-07-19 四川坤德智联科技有限公司 Multi-shaft multi-layer shearing stirring drilling tool for stirring continuous wall construction and use method

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104608241B (en) * 2015-01-27 2017-01-25 长安大学 A twin-shaft continuous mixer and its mixing control method
US11389775B2 (en) * 2016-04-25 2022-07-19 Young Ho Bok Stirrer comprising two rotating shafts having intersecting stirring blades capable of rotating symmetrically and rotating in identical direction and stirring method
CN106079091B (en) * 2016-08-18 2019-02-05 许昌德通振动搅拌技术有限公司 Double-horizontal-shaft crossed recursion continuous vibration stirring device
CN108221559B (en) * 2017-12-28 2020-08-25 警通建设（集团）有限公司 Asphalt mixing plant
CN112023815B (en) * 2020-08-21 2022-06-07 湖南中联重科混凝土机械站类设备有限公司 Stirring device and stirrer

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1101606B (en) * 1978-09-21 1985-10-07 Risco Brevetti MIXER FOR MEAT AND FOOD IN GENERAL
AU2000241379A1 (en) * 2000-05-05 2001-11-20 Ammann Aufbereitung Ag Two-shaft compulsory mixer, use of the two-shaft compulsory mixer and method foroperating a two-shaft compulsory mixer
CN101323149A (en) * 2007-06-14 2008-12-17 福建南方路面机械有限公司 Forced action mixer with adjustable stirring unit
CN201239995Y (en) * 2008-07-29 2009-05-20 韶关市天源重机有限公司 Energy-saving double-horizontal shaft forced concrete mixer
CN201505984U (en) * 2009-10-09 2010-06-16 邵克文 Continuous double horizontal shaft concrete mixer
CN201552667U (en) * 2009-10-21 2010-08-18 长沙中联重工科技发展股份有限公司 Double-horizontal-shaft single ribbon concrete mixer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104589502A (en) * 2015-01-23 2015-05-06 长安大学 Double-horizontal-shaft continuous stirrer with oppositely arranged inner and outer stirring units
CN118360939A (en) * 2024-06-19 2024-07-19 四川坤德智联科技有限公司 Multi-shaft multi-layer shearing stirring drilling tool for stirring continuous wall construction and use method

Also Published As

Publication number Publication date
FI122572B (en) 2012-03-30
FI20105937A0 (en) 2010-09-09
CN102416668A (en) 2012-04-18
EP2428341A3 (en) 2014-04-16
CN102416668B (en) 2014-06-11
ES2518090T3 (en) 2014-11-04
EP2428341B1 (en) 2014-10-01

Similar Documents

Publication Publication Date Title
EP2428341B1 (en) Mixer axis for dual axis concrete mixer, and dual axis concrete mixer
EP2058048A1 (en) Mixing elements for a static mixer
US10350557B2 (en) Mixing systems, methods, and devices with extendible impellers
US8950930B2 (en) Stirring blade group structure and stirring device using the same
US20110235461A1 (en) Functioning section of a hand blender and/or mixer with multiple rotating blades
KR20130061615A (en) Stirring axis and stirring apparatus using stirring axis
US20050286343A1 (en) Dynamic in-line mixing device
US20150290604A1 (en) Rotary mixer in multi-liquid mixing type injection machine
JP2010201835A (en) Biaxial mixer
TW200505650A (en) Double-shaft mixing machine
JPH11221818A (en) Biaxial concrete mixer
JP4041572B2 (en) Biaxial concrete mixer
CN102501289B (en) Sawdust agitator
CN101909431B (en) Stirring and chopping augers
CN202387430U (en) Novel mixing propeller for wood dust mixer
JP4931185B2 (en) Single-shaft mixer
CN206661005U (en) A kind of four axle High-efficient Stirrers
KR100821236B1 (en) Continuous mixer
CN203077467U (en) Multi-axis continuous mixing stirring machine
CN223490775U (en) Blades for mixers
EP2347656A2 (en) Mixer adapted to mix and/or knead ingredients disposed in a container
JP2002361058A (en) Stirrer blade
CN203077466U (en) Dead-angle-free continuous mixing blender
CN211800536U (en) High-efficient blendor of medicine mixing usefulness
JP5248695B2 (en) Ground improvement stirring device

Legal Events

Date Code Title Description
AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ELEMATIC OY AB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIC1 Information provided on ipc code assigned before grant

Ipc: B01F 7/04 20060101ALI20140310BHEP

Ipc: B01F 7/00 20060101ALI20140310BHEP

Ipc: B01F 7/08 20060101ALI20140310BHEP

Ipc: B28C 5/14 20060101AFI20140310BHEP

17P Request for examination filed

Effective date: 20140424

RBV Designated contracting states (corrected)

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIC1 Information provided on ipc code assigned before grant

Ipc: B28C 5/14 20060101AFI20140527BHEP

Ipc: B01F 7/00 20060101ALI20140527BHEP

Ipc: B01F 7/04 20060101ALI20140527BHEP

Ipc: B01F 7/08 20060101ALI20140527BHEP

INTG Intention to grant announced

Effective date: 20140630

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 689281

Country of ref document: AT

Kind code of ref document: T

Effective date: 20141015

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2518090

Country of ref document: ES

Kind code of ref document: T3

Effective date: 20141104

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602011010224

Country of ref document: DE

Effective date: 20141113

REG Reference to a national code

Ref country code: NL

Ref legal event code: T3

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 689281

Country of ref document: AT

Kind code of ref document: T

Effective date: 20141001

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150201

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141001

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141001

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141001

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150101

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141001

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141001

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141001

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150102

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141001

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141001

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141001

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141001

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602011010224

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141001

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141001

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141001

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141001

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20150702

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141001

Ref country code: LU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150830

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150831

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150831

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20150830

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20110830

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141001

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141001

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141001

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141001

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20141001

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20180921

Year of fee payment: 8

Ref country code: FR

Payment date: 20180827

Year of fee payment: 8

Ref country code: IT

Payment date: 20180823

Year of fee payment: 8

Ref country code: NL

Payment date: 20180821

Year of fee payment: 8

Ref country code: DE

Payment date: 20180823

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20180821

Year of fee payment: 8

Ref country code: GB

Payment date: 20180822

Year of fee payment: 8

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 602011010224

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MM

Effective date: 20190901

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20190830

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20190831

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190831

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190901

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200303

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190830

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190831

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190830

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20210108

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20190831