EP1990086A1 - Lining for vessels of mixers and tumblers - Google Patents

Lining for vessels of mixers and tumblers Download PDF

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Publication number
EP1990086A1
EP1990086A1 EP07425267A EP07425267A EP1990086A1 EP 1990086 A1 EP1990086 A1 EP 1990086A1 EP 07425267 A EP07425267 A EP 07425267A EP 07425267 A EP07425267 A EP 07425267A EP 1990086 A1 EP1990086 A1 EP 1990086A1
Authority
EP
European Patent Office
Prior art keywords
previous
lining according
plates
vessel
mixer
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
EP07425267A
Other languages
German (de)
French (fr)
Other versions
EP1990086B1 (en
Inventor
Enzo Bianchi
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.)
B & B Srl
Original Assignee
B & B Srl
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 B & B Srl filed Critical B & B Srl
Priority to AT07425267T priority Critical patent/ATE428493T1/en
Priority to DE602007000918T priority patent/DE602007000918D1/en
Priority to EP07425267A priority patent/EP1990086B1/en
Publication of EP1990086A1 publication Critical patent/EP1990086A1/en
Application granted granted Critical
Publication of EP1990086B1 publication Critical patent/EP1990086B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B28C5/0862—Adaptations of mixing containers therefor, e.g. use of material, coatings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/50—Mixing receptacles
    • B01F35/511—Mixing receptacles provided with liners, e.g. wear resistant or flexible liners

Definitions

  • the present invention relates to a lining for vessels of mixers and tumblers, and in particular to a lining which can be employed for protecting the inner walls of the vessel of a mixer or a tumbler from the impacts of the materials treated in them.
  • the present invention also relates to a mixed and a tumbler comprising said lining.
  • the vessels of mixers and tumblers are generally lined by a layer of an elastomeric material which is applied in a melted form on the inner walls of the vessels, so that this material has to be completely removed when one or more portions thereof are damaged, with consequent waste of material and high pollution.
  • other vessels are lined by a plurality of steel plates which are bolted to the walls, so as to be substituted when they are damaged.
  • such a substitution is not simple because of the bolts.
  • the lining according to the present invention can be easily applied and quickly substituted when a portion thereof is damaged, without waste of material.
  • the lining according to the present invention comprises in a known way one or more plates 1, 2, 3 suitable for being applied to the inner walls of a vessel 4 of a mixer or a tumbler, which vessel 4 has generally a substantially cylindrical shape. Plates 1, 2, 3 are therefore applied to the inner bottom and/or to the inner cylindrical wall of vessel 4.
  • the surface of plates 1, 2, 3 suitable for being applied to vessel 4 is provided with one or more shaped grooves in which at least one bar 5, 6, 7 can be snap-fitted. Bars 6 and 7 are illustrated with broken lines in figure 1 . Bars 5, 6, 7 can be fastened, in particular welded, to an inner wall of vessel 4 and are shaped with a profile suitable for the fitting into a groove of plates 1, 2, 3.
  • first rectilinear bars 5 are fastened to the inner cylindrical wall of vessel 4 along generatrices of the latter
  • a plurality of second rectilinear bars 6 are fastened to the bottom of vessel 4 along radial axes
  • at least one curved bar 7 is fastened to the bottom of vessel 4 in the middle of the latter along a coaxial circle.
  • First plates 1 have a substantially rectangular shape, which is curved when they are applied to vessel 4, and a plurality of grooves parallel to each other
  • second plates 2 have a substantially circular sector or annular shape with a plurality of radial grooves
  • a third plate 3 has a substantially circular shape with at least one circular groove, in particular coaxial.
  • Plates 1, 2, 3 are suitably made of an elastomeric material, in particular polyurethane.
  • the profile of one or more bars 5, 6, 7, for example of first rectilinear bars 5, is substantially rectangular with a pair of protrusions 5a, 5b which project from two opposite sides near the upper side.
  • Protrusions 5a, 5b are inclined downwards with an angle A comprised between 30° and 60°.
  • the free end of protrusions 5a, 5b is rounded with a curvature radius r comprised between 0,5 and 1,5 mm.
  • Width L1 of bars 5, including protrusions 5a, 5b, is shorter than its height H but greater than width L2 of their lower portion arranged under protrusions 5a, 5b.
  • Width L1 is comprised between 10 and 12 mm
  • width L2 is comprised between 4 and 6 mm
  • height H is comprised between 10 and 14 mm.
  • the thickness of plates 1, 2, 3 is preferably greater than the double of height H of bars 5, 6, 7, that is than their grooves, which have a profile substantially complementary to the profile of bars 5, 6, 7 but have the outer edges 3a bevelled to facilitate the insertion of bars 5, 6, 7 in them and to house welding material 8 employed for fastening bars 5, 6, 7 to vessel 4.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Structural Engineering (AREA)
  • Accessories For Mixers (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

Inner lining according for mixers or tumblers, which comprises one or more plates (1, 2, 3) suitable for being applied to the inner walls of a vessel (4) of a mixer or a tumbler, wherein said plates (1, 2, 3) are made of an elastomeric material and their surface suitable for being applied to the vessel (4) is provided with one or more shaped grooves in which at least one bar (5, 6, 7) shaped with a profile complementary to the profile of the grooves can be snap-fitted. The present invention also relates to a mixed and a tumbler comprising said lining.

Description

  • The present invention relates to a lining for vessels of mixers and tumblers, and in particular to a lining which can be employed for protecting the inner walls of the vessel of a mixer or a tumbler from the impacts of the materials treated in them. The present invention also relates to a mixed and a tumbler comprising said lining.
  • The vessels of mixers and tumblers are generally lined by a layer of an elastomeric material which is applied in a melted form on the inner walls of the vessels, so that this material has to be completely removed when one or more portions thereof are damaged, with consequent waste of material and high pollution. As an alternative, other vessels are lined by a plurality of steel plates which are bolted to the walls, so as to be substituted when they are damaged. However, such a substitution is not simple because of the bolts.
  • It is therefore an object of the present invention to provide a lining which is free from said disadvantages. Said object is achieved with a lining, whose main features are disclosed in the first claim, while other features are disclosed in the remaining claims.
  • Thanks to the use of plates which can be snap-fitted on shaped bars welded to the inner walls of the vessels of mixers or tumblers, the lining according to the present invention can be easily applied and quickly substituted when a portion thereof is damaged, without waste of material.
  • Furthermore, the particular shape and arrangement of the bars, the plates and the relevant grooves make said application or substitution even simpler and quicker, thereby improving at the same time the joining of the plates to the vessel during the use.
  • Further advantages and features of the lining according to the present invention will become clear to those skilled in the art from the following detailed and non-limiting description of an embodiment thereof with reference to the attached drawings, wherein:
    • figure 1 shows a top view of a vessel comprising said lining;
    • figure 2 shows section II-II of figure 1;
    • figure 3 shows detail III of figure 1; and
    • figure 4 shows an enlarged view of the profile of a bar of the lining.
  • Referring to figures 1 and 2, it is seen that the lining according to the present invention comprises in a known way one or more plates 1, 2, 3 suitable for being applied to the inner walls of a vessel 4 of a mixer or a tumbler, which vessel 4 has generally a substantially cylindrical shape. Plates 1, 2, 3 are therefore applied to the inner bottom and/or to the inner cylindrical wall of vessel 4.
  • According to the invention, the surface of plates 1, 2, 3 suitable for being applied to vessel 4 is provided with one or more shaped grooves in which at least one bar 5, 6, 7 can be snap-fitted. Bars 6 and 7 are illustrated with broken lines in figure 1. Bars 5, 6, 7 can be fastened, in particular welded, to an inner wall of vessel 4 and are shaped with a profile suitable for the fitting into a groove of plates 1, 2, 3. In the present embodiment, a plurality of first rectilinear bars 5 are fastened to the inner cylindrical wall of vessel 4 along generatrices of the latter, a plurality of second rectilinear bars 6 are fastened to the bottom of vessel 4 along radial axes, while at least one curved bar 7 is fastened to the bottom of vessel 4 in the middle of the latter along a coaxial circle. First plates 1 have a substantially rectangular shape, which is curved when they are applied to vessel 4, and a plurality of grooves parallel to each other, second plates 2 have a substantially circular sector or annular shape with a plurality of radial grooves, while a third plate 3 has a substantially circular shape with at least one circular groove, in particular coaxial. Plates 1, 2, 3 are suitably made of an elastomeric material, in particular polyurethane.
  • Referring to figures 3 and 4, it is seen that the profile of one or more bars 5, 6, 7, for example of first rectilinear bars 5, is substantially rectangular with a pair of protrusions 5a, 5b which project from two opposite sides near the upper side. Protrusions 5a, 5b are inclined downwards with an angle A comprised between 30° and 60°. The free end of protrusions 5a, 5b is rounded with a curvature radius r comprised between 0,5 and 1,5 mm. Width L1 of bars 5, including protrusions 5a, 5b, is shorter than its height H but greater than width L2 of their lower portion arranged under protrusions 5a, 5b. Width L1 is comprised between 10 and 12 mm, width L2 is comprised between 4 and 6 mm, while height H is comprised between 10 and 14 mm. The thickness of plates 1, 2, 3 is preferably greater than the double of height H of bars 5, 6, 7, that is than their grooves, which have a profile substantially complementary to the profile of bars 5, 6, 7 but have the outer edges 3a bevelled to facilitate the insertion of bars 5, 6, 7 in them and to house welding material 8 employed for fastening bars 5, 6, 7 to vessel 4.
  • Possible modifications and/or additions may be made by those skilled in the art to the hereinabove disclosed and illustrated embodiment while remaining within the scope of the following claims.

Claims (20)

  1. Inner lining according for mixers or tumblers, which comprises one or more plates (1, 2, 3) suitable for being applied to the inner walls of a vessel (4) of a mixer or a tumbler, characterized in that said plates (1, 2, 3) are made of an elastomeric material and their surface suitable for being applied to the vessel (4) is provided with one or more shaped grooves in which at least one bar (5, 6, 7) shaped with a profile complementary to the profile of the grooves can be snap-fitted.
  2. Lining according to the previous claim, characterized in that said plates (1) have a substantially rectangular shape with a plurality of grooves parallel to each other.
  3. Lining according to claim 1, characterized in that said plates (2) have a substantially circular sector or annular shape with a plurality of radial grooves.
  4. Lining according to claim 1, characterized in that said plates (3) have a substantially circular shape with at least one circular groove, in particular coaxial.
  5. Lining according to one of the previous claims, characterized in that the outer edges (3a) of the grooves of said plates (1, 2, 3) are bevelled.
  6. Lining according to one of the previous claims, characterized in that the thickness of the plates (1, 2, 3) is greater than the double of the height (H) of their grooves.
  7. Lining according to one of the previous claims, characterized in that the profile of one or more bars (5, 6, 7) is substantially rectangular with a pair of protrusions (5a, 5b) which project from two opposite sides near the upper side.
  8. Lining according to the previous claim, characterized in that said protrusions (5a, 5b) are inclined downwards.
  9. Lining according to the previous claim, characterized in that said protrusions (5a, 5b) are inclined with an angle (A) comprised between 30° and 60°.
  10. Lining according to one of claims 7 to 9, characterized in that the free end of the protrusions (5a, 5b) is rounded.
  11. Lining according to the previous claim, characterized in that said free end is rounded with a curvature radius (r) comprised between 0,5 and 1,5 mm.
  12. Lining according to one of claims 7 to 11, characterized in that the width (L1) of the bars (5, 6, 7) is shorter than their height (H).
  13. Lining according to one of claims 7 to 12, characterized in that the width (L1) of the bars (5, 6, 7) is greater than the width (L2) of their lower portion arranged under the protrusions (5a, 5b).
  14. Lining according to one of the previous claims, characterized in that the plates (1, 2, 3) are made of polyurethane.
  15. Mixer or tumbler, characterized in that it comprises a lining according to one of the previous claims.
  16. Mixer or tumbler according to the previous claim, characterized in that the vessel (4) has a substantially cylindrical shape and the plates (1, 2, 3) are applied to the inner bottom and/or to the inner cylindrical wall of the vessel (4).
  17. Mixer or tumbler according to the previous claim, characterized in that the bars (5, 6, 7) are fastened, in particular welded, to the bottom and/or to the inner cylindrical wall of the vessel (4).
  18. Mixer or tumbler according to the previous claim, characterized in that a plurality of first rectilinear bars (5) are fastened to the inner cylindrical wall of the vessel (4) along generatrices of the latter.
  19. Mixer or tumbler according to claim 17 or 18, characterized in that a plurality of second rectilinear bars (6) are fastened to the bottom of the vessel (4) along radial axes.
  20. Mixer or tumbler according to one of claims 17 to 19, characterized in that at least one curved bar (7) is fastened to the bottom of the vessel (4) in the middle of the latter along a coaxial circle.
EP07425267A 2007-05-08 2007-05-08 Lining for vessels of mixers and tumblers Not-in-force EP1990086B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT07425267T ATE428493T1 (en) 2007-05-08 2007-05-08 MIXER LINING
DE602007000918T DE602007000918D1 (en) 2007-05-08 2007-05-08 Mixer clothing
EP07425267A EP1990086B1 (en) 2007-05-08 2007-05-08 Lining for vessels of mixers and tumblers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07425267A EP1990086B1 (en) 2007-05-08 2007-05-08 Lining for vessels of mixers and tumblers

Publications (2)

Publication Number Publication Date
EP1990086A1 true EP1990086A1 (en) 2008-11-12
EP1990086B1 EP1990086B1 (en) 2009-04-15

Family

ID=38442468

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07425267A Not-in-force EP1990086B1 (en) 2007-05-08 2007-05-08 Lining for vessels of mixers and tumblers

Country Status (3)

Country Link
EP (1) EP1990086B1 (en)
AT (1) ATE428493T1 (en)
DE (1) DE602007000918D1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011012629A1 (en) 2009-07-28 2011-02-03 B & B S.R.L. Protective lining for walls of mills, mixers, hoppers and other machines
US20130016581A1 (en) * 2010-04-16 2013-01-17 Martin Doerr Mixing Device Having a Wear-Resistant Lining

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4314512A1 (en) * 1993-05-03 1994-11-10 Elba Werk Maschinen Gmbh & Co Frictionally locking connection for fastening wear tiles for the lining of a mixing trough, in particular of a concrete-mixing trough
US6280077B1 (en) * 2000-04-12 2001-08-28 Cdf Corporation Liner for a mixing container and an assembly and method for mixing fluid components

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4314512A1 (en) * 1993-05-03 1994-11-10 Elba Werk Maschinen Gmbh & Co Frictionally locking connection for fastening wear tiles for the lining of a mixing trough, in particular of a concrete-mixing trough
US6280077B1 (en) * 2000-04-12 2001-08-28 Cdf Corporation Liner for a mixing container and an assembly and method for mixing fluid components

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011012629A1 (en) 2009-07-28 2011-02-03 B & B S.R.L. Protective lining for walls of mills, mixers, hoppers and other machines
US20130016581A1 (en) * 2010-04-16 2013-01-17 Martin Doerr Mixing Device Having a Wear-Resistant Lining

Also Published As

Publication number Publication date
ATE428493T1 (en) 2009-05-15
DE602007000918D1 (en) 2009-05-28
EP1990086B1 (en) 2009-04-15

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