• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    17SAM TOGETHER A device (10) for screening material, comprising a rotatable outer drum (11) and an inner drum (12), a first end (14) of the inner drum (12) being provided with an inlet ( 16) for the material to be screened, and wherein the inner drum (12) and the outer drum (11) are provided with irradiation | direction through holes (18, 20). The drums (11, 12) are arranged rotatably in a first direction of rotation (A) and in an opposite second direction of rotation (F). The outer drum (11) is further provided with at least one through-opening (21) for releasing in the first direction of rotation (A) a fraction (27) of the material screened through the inner drum (12). An inner side of the outer drum (11) is provided with a shielding device (25) at the opening (21) for shielding the opening (21) in the second direction of rotation (F) and preventing material from leaving the outer drum (11). thereby.
    公开号:SE1450051A1
    申请号:SE1450051
    申请日:2014-01-20
    公开日:2015-07-21
    发明作者:Magnus Nilsson
    申请人:Mrt System Internat Ab；
    IPC主号:
    专利说明:

    15 20 25 30 2 A disadvantage of such devices and methods of the prior art is that in order to achieve acceptable results they entail extensive costs for investment in and operation of bulky process equipment.
    Another disadvantage of such devices and methods of the prior art is that in order to achieve acceptable results they can be time consuming and require adjustment of process equipment.
    SUMMARY OF THE INVENTION An object of the invention is to avoid the above-mentioned disadvantages and problems of the prior art. The invention provides an efficient screening of materials, such as spent light sources in the form of fluorescent tubes and low energy lamps, which results in a clear separation of fractions from the material, such as end portions and glass from the light sources.
    It has been shown that consumed light sources in the form of fluorescent lamps and low-energy lamps during recycling result in two different types of materials with different properties. Materials from spent fluorescent lamps can, for example, be divided into two fractions, namely a first fraction, which mainly or predominantly consists of glass from the fluorescent part, and a second fraction, which mainly or predominantly consists of end parts. It is desirable to effectively separate these two fractions from each other. Furthermore, materials from spent low energy lamps can, for example, be divided into three fractions, namely a first fraction, which consists mainly or predominantly of glass, a second fraction, which consists mainly or predominantly of plastic parts and other debris, and a third fraction, which mainly or predominantly consists of end parts. It is desirable to effectively separate said three fractions from each other. It has also been shown that the first fraction, i.e. the glass fraction, differs between the different materials, so that the first fraction from spent fluorescent lamps has different properties and different design than the first fraction from spent low energy lamps.
    The present invention relates to a device for sieving material, comprising an outer drum designed with a center axis and an inner drum arranged in the outer shaft, at least the outer drum being arranged rotatably about the center axis, a first end of the inner drum is provided with an inlet for the material to be screened, and wherein the inner drum and the outer drum are provided with holes passing through in radial direction, characterized in that the outer drum is arranged rotatably in a first direction of rotation and in an opposite second direction of rotation about its center axis, that the outer drum is formed with at least one through-opening for in the first direction of rotation to pass through a fraction of the material sieved through the inner drum, and that an inner side of the outer drum is provided with a shielding device at the opening to shield the opening in the other direction of rotation and prevent material from leaving r the outer drum thereby. The design of the device enables efficient screening of different types of materials, such as spent fluorescent lamps and spent low-energy lamps, in the same device. Thus, the need for several devices for the different types of materials to be screened or time-consuming adjustments of existing devices is eliminated. Through the invention, different types of materials can instead be screened in the same device by changing the direction of rotation.
    The inner drum can be made with a first section and a second section for sieving different types of material. In this way, a more efficient division of fractions from different materials, such as fluorescent lamps and low-energy lamps, can be achieved.
    The screening device can form an inner mouth arranged at an angle to the opening in the outer drum, which mouth leads to said opening, so that the screening device extends inwards and over the opening and so that material in the outer drum can only reach the opening via the mouth. .
    The invention also relates to a method for sieving materials. The method comprises the steps of a) rotating an outer drum and an inner drum arranged inside the outer drum in a first direction of rotation about a center axis of the outer drum, b) introducing a first material into the inner drum through an inlet arranged in the inner drum, c) separating a first fraction of the first material from a second fraction of the first material through openings in the inner drum, d) discharging the first fraction of the first material radially through at least one opening in the outer drum, e) discharging the second fraction of the first material from the inner drum, f) rotating the outer drum and the inner drum in a second direction of rotation opposite to the first direction of rotation, g) inserting a second material in the inner drum through the inlet of the inner drum, h) through holes in the inner drum divide the second material into fractions, and i) by means of a screening device shield the opening in the outer drum and h prevent any fraction from leaving the outer drum.
    All steps in the method do not necessarily have to be performed in the order mentioned. For example, step g can be performed before step f, such as when the starting point is that the drums are not rotated but stand still.
    The method may include the step of aiming at different types of light sources, such as different types of mercury-containing light sources. The method may comprise the steps of aiming material from fluorescent lamps in the first direction of rotation and aiming material from low energy lamps in the second direction of rotation.
    Further features and advantages of the present invention will become apparent from the description of exemplary embodiments below, the accompanying figures and the dependent claims.
    BRIEF DESCRIPTION OF THE DRAWINGS The invention will now be described in more detail by means of exemplary embodiments with reference to the accompanying drawings, in which Fig. 1 is a schematic perspective view of a device for sieving materials according to an embodiment of the present invention, Fig. 2 is a schematic perspective view of a material screening apparatus according to Fig. 1, showing a second end with an outlet for materials to be screened, Fig. 3 is a schematic longitudinal sectional view of the device according to an embodiment of the invention, where the heel and openings of an outer and inner drum are shown schematically and where a first and second section of the inner drum are shown, Fig. 4 is a schematic perspective view of the one shown in Fig. 3. Fig. 5 is a schematic front view of a screening device according to an embodiment, showing screening of a first material, such as in the form of fluorescent lamps, Fig. 6 is a schematic front view. Fig. 7 is a schematic front view of a screening device according to Fig. 5, showing sieving of a second material, such as in the form of low energy lamps, and Fig. 8 is a schematic longitudinal sectional view of the device shown in Fig. 5 and showing sieving of the second material.
    THE INVENTION The figures are only schematic and proportions may have been changed for the sake of clarity to more clearly show details of the invention.
    With reference to Fig. 1 and Fig. 2, a device 10 for screening material according to the embodiment of the invention is schematically illustrated. The device 10 comprises or is designed in the form of a drum screen. The device 10 is designed for screening materials in the form of, for example, spent light sources, such as mercury-containing light sources. For example, the device 10 is designed for screening spent light sources in the form of fluorescent lamps and low-energy lamps for dividing them into clear fractions, such as at least one glass fraction and one end fraction, which is described in more detail below. Alternatively, the device 10 is designed for screening other types of materials.
    The device 10 comprises an outer drum 11 formed with a center axis X and an inner drum 12. The inner drum 12 is completely or at least partially arranged inside the outer drum 11 and is made smaller in diameter than the outer drum 11. The inner drum 12 extends parallel to or substantially parallel to the outer drum 11 to form a gap 13 between an outer shell surface of the inner drum 12 and an inner shell surface of the outer drum 11. The outer drum 11 and the inner drum 12 are tubular and, for example, made with a circular or substantially circular cross-section. For example, the inner drum 12 is arranged coaxially with the outer drum 11. The drums 11, 12 are formed with a first end 14 and a second end 15. In the first end 14 of the inner drum 12 an inlet 16 is arranged for the material to be screened. , so that material can be introduced into the inner drum 12 through the inlet 16 for sieving thereof. In the embodiment shown, an outlet 17 is arranged in the other end 15 of the inner drum 12. The drums 11, 12 are rotatably arranged, such as about the center axis X. For example, the inner drum 12 is fixedly connected to the outer drum 11, so that the drums 11, 12 rotates together. Alternatively, the drums are rotatably arranged separately. For example, the device 10 or at least the drums 11, 12 are inclined so that material in the drums 11, 12 is transported in the axial direction towards the other end 15 when the drums 11, 12 rotate F85.
    The inner drum 12 is made with holes 18 and openings 19 for sieving material. The holes 18 and the openings 19 extend radially through a circumferential surface of the inner drum 12, so that material having a size equal to or smaller than the holes 18 or the openings 19 can pass radially from the inner drum 12 to the outer drum 11. The outer drum 11 is made with holes 20 for sieving material. The holes 20 extend radially through a circumferential surface of the outer drum 11, so that material of corresponding or smaller size can pass radially out of the outer drum 11. Furthermore, the outer drum 11 is made with one or more openings. The holes 18, 20 are for the sake of clarity disproportionately large in the figures. The holes 18 in the inner drum 12 differ from the openings 19 in the inner drum 12 and the holes 20 in the outer drum 11 differ from the openings 21 in the outer drum 11. The holes 18 in the inner drum 12 are larger than the holes 20 in the outer drum. the drum 11. For example, the holes 18, 20 are substantially circular. For example, the holes 18, 20 are formed by perforations in a plate or the like. Thus, for example, the outer drum 11 is formed of a perforated plate, a part of the inner drum 12 being formed of a perforated plate. For example, the holes 18 in the inner drum 12 are made with a diameter of 10-20 mm, 12-18 mm or 13-16 mm. For example, the holes 20 in the outer drum 11 are made with a diameter of 5-15 mm, 8-12 mm or 9-11 mm. The openings 21 in the outer drum 11 are elongate in the axial direction and are made with a width of at least 25 mm or a width of 30-50 mm or 35-45 mm.
    Referring also to Fig. 3 and Fig. 4, the outer drum 11 and the inner drum 12 are shown schematically in longitudinal section. As can be seen from Fig. 3 and Fig. 4, the inner drum 12 is formed with a first section 22 and a second section 23 axially offset relative to the first section 22 for screening different materials. For example, the first and second sections 22, 23 are arranged next to each other and made of substantially the same diameter.
    The first section 22 is formed with the holes 18. In the embodiment shown, the first section 22 is arranged between the inlet 16 and the second section 23. The second section 23 comprises a plurality of axially extending and elongate elements 24, such as tubular elements or the like. , which elements 24 are distributed around the center axis X and arranged with a mutual space during the formation of the openings 19 in the inner drum 12. In the embodiment shown, the openings 19 are elongate and made with a width of, for example, 5-25 mm, 10 -20 mm or 12-15 mm.
    As can be seen from Fig. 3 and Fig. 4, an inner circumferential surface of the outer drum 11 is provided with a shielding device 25 at each of the elongate openings 21 in the outer drum 11. The shielding devices 25 are made in the form of covers over the openings 21. in the outer drum 11 to shield the openings 21 in the radial direction. The shields 25 form an inner orifice 26 to the openings 21, which inner orifice 26 is arranged at an angle to the openings 21, such as a substantially right angle. The mouths 26 of the openings 21 have, for example, their extension in an inwardly extending and longitudinal plane, such as a plane with an axial line and a radial line, in order to let material through laterally, ie. in a direction transverse to the axial and radial direction, up to the openings 21. In the embodiment shown, a plurality of elongate openings 21 are distributed over the outer drum 11 both axially and about the center axis X. Alternatively, at least one elongate opening 21 is arranged at the other end 15 of the outer drum 11, for example, at least two elongate openings 21 are provided on opposite sides of the outer drum 11.
    Referring to Fig. 5 and Fig. 6, there is schematically shown screening of a first material by rotation of the drums 11, 12 in a first direction of rotation, which first direction of rotation is illustrated by means of the arrow A in Fig. 5. In Fig. 5, direction of rotation A clockwise. The first material is, for example, spent light sources in the form of fluorescent lamps. The first material is, for example, broken or crushed before it is introduced through the inlet 16 into the inner drum 12. Alternatively, the first material is disintegrated during the screening thereof in the device 10. The first material is introduced into the inner drum 12 through the inlet 16, as axially into the inner drum 12 and shown by the arrow B in Fig. 5 and Fig. 6. The disintegrated first material has two fractions, namely a first fraction 27 and a second fraction 28. When the first material are broken fluorescent lamps, the first fraction 27 consists of broken glass and the second fraction 28 of end parts. When the first material is broken fluorescent lamps, for example, the first material is divided into only the said two fractions 27, 28. Alternatively, the first material is divided into more fractions. Different fractions can be contaminated by other materials after screening to a certain extent, which to some extent depends on the material to be screened.
    The first material with the first fraction 27 and the second fraction 28 passes the first section 22 of the inner drum 12 and is thus guided axially inside the inner drum 12 to the second section 23. In the second section 23 of the inner drum 12, the first material is screened, the first fraction 27 of the first material passing through the openings 19 in the inner drum 12, as shown by the arrow C in Fig. 5 and Fig. 6. The first fraction 27 of the first material is thus moved in the radial direction from the inner drum 12 to the outer drum 11. In the first direction of rotation A the shielding devices 25 do not block the elongate openings 21 in the outer drum 11, the first fraction 27 of the first material is carried out of the outer drum 11 through the elongate openings 21 in the outer drum 11, as shown by the arrow D in Fig. 5 and Fig. 6. Thus, the orifices 26 of the shield are moved. gs devices 25 against the material in the outer drum 11 when the outer drum 11 is rotated in the first direction of rotation A, so that the material in the outer drum 11 is introduced into the orifices 26 and further to the openings 21. Thus, the first fraction 27 is passed of the first material out of the outer drum 11 in the radial direction through the openings 21. The second fraction 28 of the first material does not pass through the openings 19 in the inner drum 12 and is discharged, for example, through the outlet 17 in the other end 15 of the inner drum 12. , as shown by the arrow E in Fig. 6, whereby the first material is divided into two distinct fractions. For example, the second fraction 28 of the first material is fed out of the inner drum 12 in the axial direction through the outlet 17.
    Referring to Fig. 7 and Fig. 8, schematic screening of a second material by rotation of the drums 11, 12 in a second direction opposite to the first direction is shown, which second direction of rotation is illustrated by means of the arrow F in Fig. 7. In Figs. 7, the direction of rotation is counterclockwise. The other material is, for example, spent light sources in the form of low-energy lamps. The second material is, for example, disintegrated or crushed before being introduced through the inlet 16 into the inner drum 12. Alternatively, the second material is disintegrated during its screening in the device 10. The second material is introduced into the inner drum 12 through the inlet 16, as shown by means of the arrows G in Fig. 7 and Fig. 8. For example, the second material is inserted inside the inner drum 12 in the axial direction. The decomposed second material has three fractions, namely a first fraction 29, a second fraction 30 and a third fraction 31. When the second material is decomposed low energy lamps, the first fraction 29 consists of broken glass, the second fraction 30 of plastic and / or rubbish and the third fraction 31 of end parts. When the second material is decomposed low energy lamps, for example, the second material is divided into only the said three fractions 29-31. Alternatively, the second material is divided into more fractions.
    The second material with the first, second and third fractions 29-31 is screened in the first section 22 of the inner drum 12, the first and second fractions 29, 30 passing through the holes 18 in the inner drum 12, as shown by the arrows H in Fig. 7 and Fig. 8. Thus, the first and second fractions 29, 30 of the second material are passed from the inner drum 12 to the outer drum 11 in the radial direction through the holes 18 in the first section 22 of the inner drum 12. The third fraction 31 of the second material does not pass through the holes 18 in the inner drum 12 or through the openings 19 in the inner drum 12, the third fraction 31 being fed axially through the inner drum 12. In the second direction of rotation F, the shielding devices prevent Material passes through the elongate openings 21 in the outer drum 11. In the second direction of rotation F, the material does not reach the orifices 26 but passes over the shielding devices 25. the first and second fractions 29, 30 of the second material are sieved in the outer drum 11, the first fraction 29 passing through the holes 20 in the outer drum 11, as shown by the arrows I in Fig. 7 and Fig. 8. The second fraction 30 of the second material does not pass through the holes 20 in the outer drum 11 but is fed axially into the gap 13 between the inner drum 12 and the outer drum 11 and out of the device 10, as shown by the arrow J in Figs. 8. For example, the second fraction 30 is discharged from the device 10 in the axial direction at the other end 15 of the outer drum 11. The third fraction 31 of the second material is discharged from the inner drum 12, as shown by the arrow K in Fig. 8. For example, the third fraction 31 is fed axially out of the inner drum 12 through the outlet 17, whereby the second material is divided into three distinct fractions. In the embodiment shown, the shielding devices 25 are designed as a housing fixedly mounted on the inner circumferential surface of the outer drum 11 which in the first direction of rotation A catches material and carries the material out through the openings 21 in the outer drum 11 and in the second the direction of rotation F prevents material from passing through the openings 21. The shielding devices 25 extend over the openings 21 while leaving the orifices 26, which extend in a plane at an angle, such as substantially perpendicular, to the openings 21 in the outer drum 11, so that material is carried out through the openings 21 only when it the outer drum 11 is rotated in the first direction of rotation A. The orifices 26 have, for example, an axially extending length and a radially extending width. For example, the shielding devices 25 extend obliquely inwardly from the inner shell surface of the outer drum 11.
    For example, a first long side of the shielding devices 25 connects to the outer drum 11 in a position at one long side of the openings 21 and extends from this position over the openings 21, so that a second long side of the shielding devices 25 overlaps or is arranged at the level of the openings 21. second long side at the same time as the second long side of the shielding devices 25 is radially offset relative to the openings 21. In the embodiment shown, the shielding devices comprise gable portions, so that the shielding devices 25 connect to the outer drum 11 at a long side and both short sides or ends in the openings 21. In the embodiment shown, the end portions are triangular. Alternatively, the end portions are made with another suitable shape, such as arched or arcuate. The shielding devices 25 are arranged in the same direction, as in the second direction of rotation F, so that the orifices 26 leading to the openings 21 are arranged in the first direction of rotation A.
    According to an alternative embodiment, which is not shown in the figures, the shielding devices 25 are arranged movably, so that in the first direction of rotation A they are released from the openings 21 and in the second direction of rotation F cover the openings 21. For example, the shielding devices 25 are carried in the form of a plate arranged at the respective opening 21, which plate is rotatably connected to the outer drum 11 via a joint. A axis of rotation of the joint extends axially, the plate overlapping its opening 21 when the plate is in the lower part of the outer drum 11 in the first direction of rotation A and always released from the opening 21 in the second direction of rotation F.
    权利要求:
    Claims (12)
    [1]
    A device (10) for screening material, comprising an outer drum (11) formed with a center axis (X) and an inner drum (12) arranged inside the outer drum (11), the outer drum (11) being arranged rotatably about the center axis (X), a first end (14) of the inner drum (12) being provided with an inlet (16) for the material to be screened, and wherein the inner drum (12) and the outer drum ( 11) are provided with a heel (18, 20) running in radial direction, characterized in that the outer drum (11) is arranged rotatably in a first direction of rotation (A) and in an opposite second direction of rotation (F) about its center axis (X), that the outer drum (11) is formed with at least one through-opening (21) for passing in the first direction of rotation (A) a fraction (27) of the material screened through the inner drum (12), and that an inner side of the outer drum (1 1) is provided with a screening device (25) at the opening (21) so that in the other the direction of rotation (F) shield the opening (21) and prevent material from leaving the outer drum (11) thereby.
    [2]
    Device according to claim 1, wherein the inner drum (12) is formed with a first section (22) and a second section (23), the second section (23) being offset axially relative to the first section (22) , the first section (22) being formed with the holes (18), and the second section (23) comprising a plurality of axially extending and elongate elements (24), which elements (24) are distributed around the center axis (X). ) and arranged at mutual intervals to form elongate openings (19).
    [3]
    Device according to claim 2, wherein the first section (22) is arranged between the inlet (16) and the second section (23). 10 15 20 25 30 14
    [4]
    Device according to any one of the preceding claims, wherein the shielding device (25) forms an inner orifice (26) to the opening (21) in the outer drum (11), which inner orifice (26) is arranged at an angle to the opening (21).
    [5]
    Device according to any one of the preceding claims, wherein the opening (21) in the outer drum (11) is elongated in the axial direction and made with a width of at least 25 mm or a width of 30-50 mm or 35-45 mm.
    [6]
    Device according to any one of the preceding claims, wherein the holes (18) in the inner drum (12) are larger than the holes (20) in the outer drum (11), the holes (18) in the inner drum (12) being formed with a diameter of 10-20 mm, 12-18 mm or 13-16 mm, and wherein the holes (20) in the outer drum (11) are made with a diameter of 5-15 mm, 8-12 mm or 9-11 mm.
    [7]
    A device according to any one of the preceding claims, wherein the inner drum (12) is arranged coaxially with the outer drum (11), the inner drum (12) being rotatable with the outer drum (11), and wherein a second end ( 15) of the inner drum (12) is provided with an outlet (17) for a fraction of the screened material.
    [8]
    A method of sieving material, the method comprising the steps of a) rotating an outer drum (11) and an inner drum (12) arranged inside the outer drum (11) in a first direction of rotation (A) about a center axis ( X) of the outer drum (11), b) introducing a first material into the inner drum (12) through an inlet (16) arranged inside the inner drum (12), c) through openings (19) in the inner drum ( 12) separating a first fraction (27) of the first material from a second fraction (28) of the first material, d) discharging the first fraction (27) of the first material radially through at least one opening (21) in the outer material. the drum (11), e) discharging the second fraction (28) of the first material from the inner drum (12), f) rotating the outer drum (11) and the inner drum (12) in a first direction of rotation (A) opposite to second direction of rotation (F), g) introducing a second material into the inner drum (12) through the inlet (16) of the inner drum (12), h) divide the second material into fractions through heels (18) in the inner drum (12), and i) by means of a shielding device (25) shield the opening (21) in the outer drum (11) and prevent material from leaving the outer drum (11) thereby.
    [9]
    A method according to claim 8, comprising the steps of separating a first fraction (29) and a second fraction (30) of the second material from a third fraction (31) through holes (18) in the inner drum (12). first fraction (29) from the second fraction (30) of the second material through heel (20) in the outer drum (11), and discharging the first fraction (29) of the second material radially through the heel (20) in the outer drum (11).
    [10]
    The method of claim 9, comprising the steps of discharging the second fraction (30) of the second material through an outlet at one end (15) of the outer drum (11), and discharging the third fraction (31) of the second material through an outlet (17) in one end (15) of the inner drum.
    [11]
    A method according to any one of claims 8-10, comprising the steps of aiming in the first direction of rotation (A) the first material in the form of material from fluorescent lamps, and in the second direction of rotation (F) aiming the second material in the form of materials from low energy lamps.
    [12]
    A method according to claim 11, comprising the steps of dividing in the first direction of rotation (A) the first material into the first fraction (27) in the form of glass and the second fraction (28) in the form of end portions, and in the second direction of rotation (F) divides the second material into the first fraction 16 (29) in the form of glass, the third fraction (31) in the form of end parts and the second fraction (30) in the form of other.
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE1450051A|SE537662C2|2014-01-20|2014-01-20|Apparatus and method for sieving materials|SE1450051A| SE537662C2|2014-01-20|2014-01-20|Apparatus and method for sieving materials|
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