• 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:
    Drum (2) for a drum pulper (1) for dissolving recycled fiber material (F), the drum (2) comprising at least one lifting element (15) directed towards an internal volume of the drum (2) and blade elements (19 , 21, 33) for breaking the recycled fiber material (F), wherein the blade elements (19, 21, 33) are arranged at a distance from one another in a longitudinal direction of the drum (2), the blade elements (19, 21, 33) at least one sharpened section arranged substantially transverse to the longitudinal direction of the drum (2), and in that the blade elements (19, 22, 33) are arranged on an edge (15c) of the lifting element (15), the edge ( 15c) of the lifting element (15) is directed in the direction of the internal volume of the drum.
    公开号:AT14425U1
    申请号:TGM396/2014U
    申请日:2014-11-13
    公开日:2015-11-15
    发明作者:Veikko Kankaanpää；Tapio Marjamäki；Risto Oksman
    申请人:Valmet Technologies Inc；
    IPC主号:
    专利说明:

    description
    DRUM PULPER FIELD OF THE INVENTION
    The present invention relates to the processing of fiber material, in particular recycled fiber material, which is intended to be used for paper or board production. In particular, the invention relates to a drum pulper for dissolving recycled fiber material.
    BACKGROUND OF THE INVENTION
    To be able to reuse recycled fiber material derived, for example, from old corrugated containers or mixed waste paper, the recycled fiber material must be dissolved. Dissolution of the recycled fiber material takes place in a pulp system which may include one or more pulpers.
    The fiber material to be reused for the production of paper or cardboard is fed to a pulper where the recycled fiber material is dissolved and mixed with water to form a fiber pulp suspension consisting of fibrous material and water which have been mixed together. A drum pulper is a type of pulper that can be used to dissolve recycled fiber material. The drum pulper has a drum that rotates in a substantially horizontal position or in a slightly downwardly inclined position from the end of the supply of material to the end of the material exit. The recycled fiber material to be dissolved in the drum pulper rises in the rotating drum and drops down to the bottom of the drum in some places, the fiber material impinging on the bottom of the drum and being dissolved. Typically, a drum pulper has a disintegrating part in the first part of the drum. The dissolving part of the drum is followed by a screen member intended to recover fiber from the dissolved fiber material.
    BRIEF DESCRIPTION OF THE INVENTION
    An object of the present invention is to provide a novel drum pulper for dissolving recycled fiber material.
    The invention is characterized by the features of the independent claims.
    According to one embodiment of a drum for a drum pulper for dissolving recycled fiber material, the drum has at least one lifting element, which is directed in the direction of an inner volume of the drum, and blade elements for breaking the recycled fiber material, wherein the blade elements at a distance from each other are arranged in a longitudinal direction of the drum, wherein the blade elements have at least one sharpened portion which is arranged substantially transversely to the longitudinal direction of the drum, and wherein the blade elements are arranged on an edge of the lifting element, wherein the edge of the lifting element in the direction of the inner Volume of the drum is directed.
    According to one embodiment of a drum for a drum pulper, the drum has a dissolving part for dissolving the recycled fiber material to be supplied to the drum, and blade elements are arranged at least in the dissolving part.
    According to one embodiment of a drum of a Trommelpulpers, the drum on blade elements, which are arranged between adjacent lifting elements.
    According to one embodiment of a drum for a Trommelpulper the blade member is a plate blade having a first edge and a second edge, wherein the edges are arranged convergent to each other, so that at the point where the edges meet, a Cam is arranged so that it is arranged in the direction of rotation of the drum.
    According to one embodiment of a drum for a Trommelpulper the blade elements is a rod blade having an arm and a cam at a distal end of the arm, wherein the arm is bent to arrange the cam so that it at least partially in the direction of Rotation direction of the drum shows.
    According to an embodiment of a drum for a Trommelpulper at least one lifting element is arranged in a longitudinal direction of the drum in an oblique position with respect to a central axis of the drum.
    According to one embodiment of a drum for a Trommelpulper the lifting element is a one-piece component of a housing of the drum.
    According to one embodiment of a drum for a Trommelpulper the lifting element and at least a part of the housing are formed from the same housing blank.
    According to one embodiment of a drum for a drum pulper, the drum has a moistening area for moistening recycled fiber material fed to the drum.
    According to one embodiment of a drum for a Trommelpulper the drum is rotatable.
    BRIEF DESCRIPTION OF THE DRAWINGS
    In the following, the invention will be described in more detail by means of preferred embodiments with reference to the accompanying drawings, in which Figure 1 shows schematically a side view of a drum pulper and a
    Drum of Trommelpulpers shows in cross section; Figure 2 shows schematically a second drum; Figure 3 shows schematically a third drum; Figure 4 shows schematically an end view of the drum of Figure 3; Figure 5 shows schematically a dissolving part of the drum of Figure 2 in cross-section; Figure 6 shows schematically a plurality of Klingenele elements shown in Figure 5; Figure 7 shows schematically a second blade element; Figure 8 shows schematically a third blade element; Figure 9 shows schematically a fourth blade element; Figure 10 shows schematically a part of a fourth drum; Figure 11 shows schematically a fifth drum; Figure 12 shows schematically a sixth drum; and Figures 13, 14 and 15 show a detail of drums of Figures 11 and 12.
    For the sake of clarity, the figures show the embodiments in a simplified manner. In the figures, like reference numerals represent like elements.
    DETAILED DESCRIPTION OF THE INVENTION
    FIG. 1 schematically shows a side view of a drum pulper 1 for dissolving, d. H. Shredding of recycled fiber material, such as mixed waste paper or old corrugated containers. The drum pulper 1 of FIG. 1 has a rotatable drum 2. The drum 2 has a housing 3 and a first end 4 or a feed end 4, through which recycled, recycled fiber material F and water W is fed into the drum 2. The supply of water is indicated by the arrow W. The drum 2 also has a second end 5 or discharge end 5 at the opposite end of the drum 2, wherein through the second end 5, a waste or reject portion of the fed into the drum 2, recycled fiber material F from the drum 2 for another Processing is dissipated. The first end 4, the second end 5 and the housing 3 together define an inner volume of the drum 2. Below the drum 2 is a tank 6 for receiving fibers recovered from the recycled fiber material F fed into the drum 2. The recycled fiber material is fed into the drum 2 through a feed channel 7, the recycled fiber material being fed into the feed channel 7 by means of a conveyor belt 8 or other suitable device. The recycled fiber material F may be in the form of whole bales or loose material, with Figure 1 representing the recycled fiber material F in a form of whole, recycled fiber bales.
    In the drum pulper 1, the recycled fiber material F is dissolved by rotating the drum 2 by means of a rotary device not shown in Fig. 1 for the sake of clarity. The drum 2 is arranged either horizontally, as shown in Figure 1, or in a direction slightly inclined downward from the direction of the feeding end 4 in the direction of the discharge end 5 position. At the feed end 9, the housing 3 of the drum 2 is solid or not interrupted, whereas on the screen part 10 the housing 3 of the Drum 2 is provided with openings 11. In the longitudinal direction of the drum 2, the housing 3 of the drum 2 may be formed of only one portion or may have a plurality of successive portions which together in the longitudinal direction of the drum 2 form the entire housing 3.
    The recycled fiber material F and water W are supplied through the feed end 4 of the drum 2 in the drum 2, so that the fiber material and the water enter the dissolving part 9. When the drum 2 is rotated, the fibrous material in the resolving part 9 in the rotary drum 2 rises and finally falls back, due to gravity, and hits a bottom of the drum 2, thereby dissolving the fibrous material, which means that Fibers of the fiber material begin to separate from each other, so that individual fibers, fiber bundles and / or paper, cardboard and / or recycled fiber material bale parts of different sizes form in the drum 2. In the dissolving part 9 of the drum 2, the fiber material and the water also begin to mix with each other to form a fiber pulp suspension. Because the housing 3 of the drum 2 is solid or stable or uninterrupted at the resolving part 9, fibers, bundles of fibers and / or different pieces of fibrous material separated from the recycled fibrous material fed into the drum 2 do not come to the drum Dissolving part 9 of the drum 2 from the drum 2 from.
    From the dissolving part 9, the fiber material F and the water W move in the drum 2 to the screen member 10. In the screen member 10, the dissolution of the fiber material is continued, d. H. The fibrous material in the screen member 10 also rises in the rotary drum 2 and falls back down and hits by gravity on a bottom of the drum 2, whereby the fiber material is further dissolved. Because the housing 3 of the drum 2 is provided on the screen member 10 with openings 11, fibers, fiber bundles and / or fiber material parts of different sizes separated from the recycled fiber material can leave the drum 2 through the openings 11 and into the tank 6 enter. At the screen portion 10 of the drum 10, the drum pulper 1 may also have nozzles 12 for spraying water splashes 13 to enhance the separation of the fibers, fiber bundles and / or fiber material parts from the fiber pulp suspension and the transport thereof into the tank 6. The proportion of recycled fiber material entering the tank 6 is an accepted one
    Part or Acceptance of the drum pulper 1. The fiber pulp suspension that has entered the tank 6 will be dispensed from the tank 6 through an output channel 14 to further process steps and finally, for example, for use in paper or board making. The proportion of the recycled fiber material which has not entered the tank 6 through the openings 11 represents an unacceptable proportion of the drum pulper 1 and is discharged through the discharge line from the drum 2 for waste treatment.
    Figure 1 shows in the screen member 10 and lifting elements 15, which promote the increase of the fiber material when the drum 2 is rotated. The lifting members 15 are directed toward the inner volume of the drum 2 and they move or walk away from the direction of feed end 4 of the drum 2 towards the discharge end 5 of the drum 2. The lifting members 15 are in an inclined position relative to the longitudinal axis of the drum 2 arranged to increase the movement of the fiber material in the direction from the feed end 4 in the direction of the discharge end 5, wherein the inclined lifting elements 15 cause the fiber material which has risen with the lifting elements, to a closer to the Laxative lying position with respect to the position in which the fiber material has begun to lift. The lifting elements 15 in this way also increase the movement of the fiber material in the direction of the discharge end 5 in the drum 2, whereby it is not only the process pressure and the effect of streams of water and fiber material which cause the movement of the fiber material in the direction of the discharge end 5. Similar lifting elements 15 can also be arranged on the screen part 9. The lifting elements 15 may extend over the entire length of the drum 2.
    Figure 2 shows schematically a second drum 2, which can be used for example in a drum pulper 1 of Figure 1 for dissolving the recycled fiber material. The drum 2 has a housing 3, a feed end 4 and a discharge 5. The drum 2 also has at the feed end 4 of the drum 2 a dissolving part 9 which is followed by a sieve part 10. At the take-up part 9, the housing 3 of the drum 2 is solid or not interrupted, whereas the housing 3 of the drum 2 is provided on the screen part 10 with openings which are not shown in Figure 2 for the sake of clarity. Figure 2 also shows a first end ring 16 at the feed end 4 of the drum 2 and a second end ring 17 at the discharge end 5 of the drum 2, the end rings 16, 17 reinforcing the structure of the drum 2 at the ends of the drum 2. Figure 2 also shows support rings 18 at a central part of the drum 2, wherein the support rings 18 both reinforce the structure of the drum 2 at the central part of the drum 2, as well as provide support for the drum 2 for a bearing support forming part of equipment to rotate the drum 2 forms.
    Figure 3 shows schematically a third drum 2, whose basic structure is similar to that of the drum 2 of Figure 2, with the exception that the drum 2 of Figure 3 is shorter than the drum 2 of Figure 2. Figure 4 shows schematically an end view of the drum 2 of Figure 3. For the sake of clarity, Figures 3 and 4 show no openings 11 in the housing 3 of the drum second
    The drums 2 of Figures 2 to 4 have a plurality of lifting elements 15 which extend in the direction of the inner volume of the drum 2 and in a direction from the feed end 4 of the drum 2 in the direction of the discharge end 5 of the drum 2 or are directed. In the embodiments of FIGS. 2 to 4, each lifting element 15 is a one-piece part with the housing 3, so that the lifting element 15 is integrally formed with the housing 3 and made of the same housing blank as the rest of the housing 3 in a circumferential direction of the drum 2 has no lifting element 15. In other words, it can be said that in the embodiments of Figs. 2 to 4, the lift members 15 are formed as projections of the case 3, which are directed toward the inner volume of the drum 2, that is, in the direction shown in Figs. H. the housing 3 is designed to form or provide the lifting element 15. The lifting element 15 can be formed for example by bending the housing blank or by embossing or punching the housing blank.
    The lifting element 15 shown in Figures 2 to 4 has an inlet side 15a, which is the direction of rotation of the drum 2 dressed. The direction of rotation of the drum 2 is shown in Figures 2 to 4 by means of an arrow, which is designated by the reference R. The lifting element 15 further has an outlet side 15b, which faces the direction opposite to the direction of rotation R of the drum 2. The lifting element 15 thus has two plate-like sections, d. H. the sides 15a and 15b, which have edges pointing in the direction of the internal volume of the drum 2 and are in communication with each other such that an angle is formed between the sides 15a, 15b which extends in the direction of the outer circumference of the drum Drum 2 opens. The surfaces of the sides 15a and 15b facing the inner volume of the drum 2 help to form part of the inner circumference of the drum 2. The point at which the edges of the sides facing towards the inner volume of the drum meet each other forms an edge 15c of the lifting element 15, the edge 15c moving in the direction of the internal volume of the drum 2, preferably in the direction of a central axis the drum 2 extends or is directed.
    Similarly as in Figure 1, the lifting elements 15 shown in Figures 2 to 4 are also arranged in an inclined position relative to the longitudinal axis of the drum 2 to the movement of the fiber material in the direction from the feed end 4 to the discharge end 5 to strengthen. Alternatively, the lifting elements 15 could also be arranged in a position parallel to the longitudinal axis of the drum 2, whereby the flow of the fiber material to be dissolved from the feed end 4 of the drum 2 in the direction of the discharge end 5 would be effected only by the process pressure alone.
    When compared to prior art drums having lifting members which are originally separate and then welded to the inner surface of the drum, the drum 2 described above enables a plurality of welds to be reduced, because the drum 2 may at a minimum have only one weld at a point where the free ends of a casing blank extending over the entire circumference of the drum are secured together. If the number of welds is less than before, the amount of weak points can be reduced, resulting in a stiffer structure of the drum 2. At the same time, a better stiffness of the bent structure is achieved than in drums known from the prior art, whereby it is also possible to reduce a wall thickness of the housing of the drum, which reduces the total weight of the drum and the mass to be rotated. This, in turn, reduces force on a foundation of the drum pulper and reduces the amount of energy required to rotate the drum, thereby also reducing the size and performance of the drum rotating equipment. Also, the amount of material required to make the described drum is less than in drums known in the art.
    In the embodiments of the drums shown in Figures 2 to 4, a housing blank may extend over the entire length of the drum 2. For long drums, however, a plurality of successive housing blanks may be provided in the longitudinal direction of the drum 2. In its circumferential direction, the drum 2 may have only one housing blank or it may be provided several consecutive, connected by seams housing blanks.
    Figure 5 shows schematically a dissolving part 9 of the drum 2 of Figure 2 in cross section and Figure 6 shows schematically a part of a lifting element 15 in the dissolving part 9 of the drum 2. In the embodiment of Figures 2, 5 and 6, the drum second in the take-up part 9, plate-like blades 19 or plate blades 19, which are kinds of blade members intended to break or dissolve the recycled fiber material to be supplied to the drum 2. The plate blades 19 are disposed in the resolving portion 9 on the inner circumference of the housing 3 and, more specifically, on the lever members 15 and, more specifically, on the edges 15c of the lifting members 15, the edges 15c of the lifting members 15 being in the direction of the inner Volume of the drum 2 are directed. In the embodiment of the drum 2 of Figures 2, 5 and 6, the lifting element 15 is a one-piece part of the housing 3 and made of the same housing blank as the parts of the housing 3, which do not form lifting elements 15. However, the external appearance of the lifting member 15 may be different. In the embodiment of the drum 2 of FIGS. 2, 5 and 6, in addition to or as an alternative to the edges 15c of the lifting elements 15, the plate blades 19 may also be attached to other parts of the lifting elements 15, for example at the inlet sides 15a of the lifting elements 15 or 15 the outlet sides 15b of the lifting elements 15 or at the areas of the housing 3, which do not form parts of the lifting elements 15.
    The plate blades 19 have a first edge 19 a, which is directed in the direction of rotation R of the drum 2, and a second edge 19 b, which is directed against the direction of rotation R direction. The first and second edges 19a, 19b are convergently arranged so that, at the point where the edges 19a and 19b meet, there is a sharp corner 19c or a sharp cam 19c arranged to be extends or is directed in the direction of rotation R of the drum 2 when the plate blades 19 are mounted on the drum 2. The first edge 19a, the second edge 19b and the cam 19c form blades of the plate blades 19, which are preferably arranged substantially transverse to the longitudinal direction of the drum to produce an effective breaking or cutting action on the fiber material F.
    In the longitudinal direction of the drum 2, a plurality of plate blades 19 are arranged on the lifting element 15. In the longitudinal direction of the drum 2, the plate blades 19 are arranged at a distance from each other. The plate blades 19 may be positioned in the drum 2 such that there is either a uniform spacing, or a varying distance, between the adjacent plate blades 19 in the longitudinal direction of the drum 2, as shown in Figures 5 and 6. In the embodiment of Figs. 5 and 6, the distance between the successive plate blades 19 at the beginning of the dissolving portion 9 in the longitudinal direction of the drum 2 is substantially small, that is to say the distance between the successive plate blades 19. H. At the beginning of the dissolving part 9, the plate blades 19 are relatively close to each other. The distance between the successive plate blades 19 is designed to increase in the direction of the discharge end 5 of the drum 2, i. H. the distance between the successive plate blades 19 is arranged to become larger in the flow direction of the fiber material in the drum 2. In the circumferential direction of the drum 2, the adjacent plate blades 19 may be arranged in the longitudinal direction of the drum 2 either at the same position or at a different position, i. H. at the same distance or at a different distance from the feed end of the drum.
    In FIG. 5, the blade elements are arranged in the release part on the lifting elements 15. In addition, the blade members may also be disposed at those portions of the housing 3 remaining between adjacent lift members in the circumferential direction of the drum 2 or only at the portions of the housing 3 remaining between adjacent lift members 15 in the circumferential direction of the drum 2.
    When the blade members, such as the above-described disc blades 19, or other blade members, such as those described below, are arranged at a distance from each other in the longitudinal direction of the drum, i. H. in the direction of the fiber material flow in the drum, in which case blade members which are separated from each other are provided, the blade members penetrate through the fiber material and effectively break the fiber material into smaller pieces. Preferably in the longitudinal direction of the drum, the blade elements are arranged substantially close to each other at the beginning of the dissolving part, whereby the breaking of the fiber material, e.g. the breaking of whole bales of fiber material is very effective at the beginning of the dissolving part. After the first breaking of the fiber material has taken place at the beginning of the dissolving part, the distance between the successive blade elements in the flow direction of the fiber material may become larger.
    When the drum 2 is rotated, the cam 19c of the plate blade 19 is the first part of the plate blade 19 which strikes the fiber material to be dissolved. When the cam 19c hits the recycled fiber material introduced into the drum 2, the sharp cam 19c penetrates the fiber material, and thereafter the first edge 19a and the second edge 19b of the plate blade 19 strike the fiber material and begin to slit the fiber material, whereby the plate blades 19 cut the recycled fiber material into smaller pieces. The plate blades 19 thus produce a breaking or cutting action on the fiber material to be dissolved as the drum 2 rotates, whereby the plate blades 19 break the fiber material into smaller pieces and participate in the dissolution of the fiber material. At the same time, as the drum 2 rotates, the recycled fiber material in the rotating drum 2 increases and eventually falls back down and impinges on a bottom of the drum 2, which also causes the dissolution of the fiber material, thereby dissolving the fiber material in this way is intensified by the plate blades 19 in the dissolving part 9 of the drum 2. When the drum 2 is rotated and the fiber material falls back down and hits the bottom of the drum 2, a part of the fiber material may also fall on the plate blades and be further broken, further enhancing the dissolution of the fiber material.
    The cutting plate blades 19 cut solid recycled fiber material fed into the drum 2 very effectively into smaller pieces, whereby the dissolution of the fiber material due to impacts on the bottom of the drum 2 can be enhanced. The cutting plate blades 19 are particularly effective for breaking recycled fiber material having a shape of whole bales, which means that the recycled fiber material having the shape of whole bales can also be fed into the drum 2 and a separate one Bale cutter, which has been used in the prior art for breaking recycled fiber bales, can be dispensed with. Alternatively, if the bale cutter is maintained in the pulp system, the length of the drum can be reduced because the blade members in the sizing member enhance the breaking of the fiber material fed into the drum 2.
    FIG. 7 schematically shows a second plate-like blade 19 or a plate blade 19, which is a type of blade element intended for breaking or dissolving recycled fiber material fed into the drum 2. The plate blade 19 of Fig. 7 has a first edge 19a directed toward the direction of rotation R of the drum 2 and a second edge 19b directed counter to the direction of rotation R. The first and second edges 19a, 19b are arranged converging so that, at the point where the edges 19a and 19b meet, there is a sharp corner 19c or a sharp cam 19c provided in the direction of rotation R the drum 2 to be directed or to extend when the blade members 19 are attached to the drum 2. The first edge 19a further includes tapered surfaces 19d, which are configured to converge toward the first edge 19a to form, at the first edge 19a, a targeted sharpened blade or portion facing the rotational direction R of FIG Drum 2 is directed. In the embodiment of Figure 7, the first edge 19a is concave and the second edge 19b is convex so that the plate blade 19 of Figure 7 has a shape that mimics a claw of a bird of prey. When the drum 2 is provided with the plate blades 19 of Fig. 7, one end 19a 'of the first edge 19a opposite to one end 19a " of the first edge 19a in the cam 19c is arranged to extend further in the direction of rotation R of the drum 2 than the end 19a ". This means that when the plate blade 19 hits the fiber material to be broken, the plate blade 19 may begin to cut the fiber material at the end 19a 'of the first edge 19a. The operation of the plate blade 19 of Figure 7 is substantially the same as the operation of the plate blade of Figure 6 is the case.
    Further, the plate blade 19 of Fig. 7 is disposed on a base 20 having a shape corresponding to the shape of the edge 15c of the wiper 15, so that the base 20 is securely fixed to the edge 15c of the lifting member 15 can be. Compared to the embodiment of FIG. 6, in the embodiment of FIG. 7, the replacement of a used plate blade 19 may be directed to the base 20 rather than to the lifting element 15 by a new necessary operation, as in the embodiment of FIG Case is.
    FIG. 8 schematically shows a rod-like blade 21 or a rod blade 21, which also constitutes a type of blade element provided for breaking or dissolving recycled fiber material fed into the drum 2. The bar blade 21 of Fig. 8 has an arm 21a formed of a round bar which is bent in the direction of rotation R of the drum 2 so that a distal end 21b of the bar is arranged to extend at least partially in the direction the direction of rotation R of the drum 2 shows. The distal end 21b of the bar blade 21 further includes a cam 21c having beveled surfaces 21d arranged to converge to form a cam 21c with a purpose sharpened blade or portion facing toward the Direction of rotation R of the drum 2 is directed. The rod blade 21 of Fig. 8 is disposed on a base 22 having a shape similar to that of the edge 15c of the lifting member 15, similarly to Fig. 7. The base 22 further includes a support member 23 which with respect to the rod blade 21 in a direction opposite to the rotational direction R of the drum 2, the purpose of the support member 23 is to prevent the rod blade 21 from bending backward.
    When the drum 2 is rotated, the cam 21c of the bar blade 21 is the first part of the bar blade 21 which strikes the fiber material to be dissolved. When the cam 21c meets the recycled fiber material fed into the drum 2, the sharp cam 21c penetrates the fiber material, and thereafter the round arm 21a of the bar blade 21 hits the fiber material, and the bar blade 21 starts to cut the fiber material into smaller pieces. The rod blade 21 thus also produces a breaking or cutting action on the fiber material to be dissolved when the drum 2 rotates. When the drum 2 is rotated and the fiber material falls back down and hits a bottom of the drum 2, a part of the fiber material may also fall on the bar blades 21 and be further broken, further enhancing the dissolution of the fiber material. In the embodiment of Fig. 8, the round shape of the arm 21a also allows any fiber material which is not cut to be easily detached from the bar blade 21, thereby maintaining the rod blade 21 in operative operation.
    FIG. 9 schematically shows another rod-like blade 21 or a rod blade 21. The rod blade 21 of FIG. 9 has an arm 21a made of a round bar positioned in the drum 2 in such a way that a blunt cam 21c is disposed at a distal end 21b of the rod 21 so as to face at least partially in the direction of rotation R of the drum 2. The operation of the bar blade 21 of Figure 9 is substantially the same as the operation of the bar blade 21 of Figure 8.
    The actual embodiments of the blade elements may also differ from that described above. Preferably, the blade member has at least a portion directed at least partially in the direction of rotation of the drum 2, and preferably arranged substantially transversely with respect to the longitudinal direction of the drum, whereby the crushing or cutting action produced by the blade member the fiber material is high.
    FIG. 10 schematically shows a dissolving part 9 of a fourth drum 2. The dissolving part 9 of the drum 2 has a housing 3 and blade elements 33. The housing 3 has lifting elements 36, which extend in the direction of an outer side of the drum 2. The lifting elements 36 have an inlet side 36a and an outlet side 36b, which are arranged so that they converge towards the outer side of the drum 2, so that there is a rounded edge 36c, at which the sides 36a, 36b meet, wherein the round edge 36c forms a rounded underside of the lifting element 36. The lifting elements 36 are integral parts of the housing 3 and are made, for example, by bending a housing blank, which is intended to form at least a part of the housing 3 on the dissolving part 9. The blade members on the resolving part are arranged in rows extending in the longitudinal direction of the drum in the areas of the housing 3 between adjacent lifting members 36 in the circumferential direction of the drum 2. In addition, the blade elements can also be arranged on the lifting elements 36 or only on the lifting elements 36. In a similar manner as described above, the lifting members 36 may be arranged in the longitudinal direction of the drum 2 in a downwardly inclined position with respect to the center axis of the drum in the direction from the feeding end 4 of the drum 2 toward the discharge end 5 of the drum 2. In contrast to the illustration according to FIG. 10, the lifting elements 36 may have a shape of a semicircle or another curved shape. Although the shape of the bottom of the lifting member 36 may also be pointed, the rounded underside of the lifting member 36, such as that described in Figure 10, ensures that the fibrous material does not adhere to the underside of the lifting member 36.
    Figure 11 shows schematically, partly in cross-section, a fifth drum 2 which can be used in a drum pulper 1 for dissolving recycled fiber material. The drum 2 has a feed end 4 and a discharge head 5 and a dissolving part 9, which is followed by a sieve part 10. The drum 2 of Figure 11 further comprises a humidifying part 24 preceding the dissolving part 9, the housing 3 being solid or uninterrupted at the humidifying part. The moistening part 24 is separated from the resolving part 9 with a ring member 26 forming an annular partition between the moistening part 24 and the resolving part 9, the ring member 26 being arranged to extend from the inner surface of the housing 3 by some distance extends in the direction of a central axis of the drum 2. On a lower portion of the drum 2, the housing 3 on the moistening portion 24 together with the ring member 36 and the first end 4 of the drum 2 define a moistening zone 25 in which the liquid level 27 is higher than in other parts of the drum 2.
    In the moistening zone 25 of the moistening part 24, the high liquid level 27 provides a volume of liquid which causes the recycled fiber material fed into the drum 2 (shown by the arrow F) to be effectively moistened, before it continues to flow into the dissolving part 9 of the drum 2. The moistening part 24 can also have trowels 28 for transporting moistened fiber material into the dissolving part 9. Additional water which enhances wetting of the fibrous material may be supplied, for example, by means of water sprays or as an overflow through a feed trough. The ring member 26 may also have a recess 29 or a trough 29, the shape of which may be rectangular or a curved or sharp point sharpened so that the sides of the sharp-pointed recess 29 are arranged to extend in the direction of outer circumference of the ring member 26 converge. These different shapes of the recess 29 are described in Figures 13, 14 and 15, in which the ring element is viewed from the end of the drum. The recess 29 creates an overflow that allows water to flow from the moistening member 24 to the drum 2 on. This water flow may also include fibers, fiber bundles and / or fibrous material parts of different sizes that may already have been separated in the moistening part 34 from the recycled fiber material. The shape of the recess 29 may also differ from those shown above. It is also possible that no recess is provided.
    When the fibrous material, which has been at least partially moistened already in the moistening part 24, enters the dissolving part 9, the dissolution of the material in the dissolving part 9 becomes more effective and starts earlier, whereby the capacity of the drum 2 increases. Also, the length of the dissolving member 9 with respect to the entire length of the drum 2 can be reduced. The moistening member 24 may also include blade members or lifting members or both the blade members and the lifting members to intensify the wetting and dissolving of the fiber material.
    The height of the ring element 26 is dimensioned such that the moistening zone 25 provided in the moistening part 24 has a sufficiently large volume for effective moistening. The minimum height of the ring member 26 in the direction of a center axis of the drum in the recess 29 may be, for example, 0.5 to 2 m, preferably 0.6 to 1.6 m, or more preferably 0.8 to 1.2 m.
    Figure 12 shows schematically, partly in cross section, a sixth drum 2 which can be used in a drum pulper 1 for dissolving recycled fiber material. The drum 2 has a feed end 4 and a discharge head 5 and a dissolving part 9, which is followed by a sieve part 10. The drum 2 of Figure 12 further includes a humidification zone 25 disposed at the entrance of the dissolving member 9. The moistening zone 25 is separated from the remainder of the dissolving portion 9 with a ring member 26, the housing 3 at the disintegrating portion 9 together with the ring member 26 and the first end 4 of the drum 2 forming the moistening zone 25 on a lower portion of the drum 2 The moistening zone 25 may extend from the first end 4 of the drum 2 over a portion of the length of the dissolving portion 9 or along the entire length of the dissolving portion 9 in the longitudinal direction of the drum 2 , In the embodiment of Figure 12, the dissolving member 9 is thus provided to produce a moistening zone 25 for moistening the recycled fiber material to be introduced into the drum 2. The area of the drum having moistening zone 25 may also have either blade elements or lifting elements or both the blade elements and the lifting elements to intensify the wetting and dissolving of the fiber material.
    FIG. 12 also schematically shows a second ring element 31 which is arranged between the dissolving part 9 and the sieve part 10 in such a way that the second ring element 31 forms an annular dividing wall between the dissolving part 9 and the sieve part 10. The general structure of the second ring member 31 may be similar to that of the ring member 26. The height of the second ring element 31 is dimensioned such that the liquid level 32 in the dissolving part 9 between the moistening zone 25 and the sieve part 10 is lower than or equal to the liquid level 27 in the moistening zone 25. The dissolving part 9 between the moistening zone 25 and the sieve part 10 can also be provided with trowels for transporting the fiber material from the dissolving part 9 to the sieve part 10. A similar second ring member 31 may be provided between the dissolving member 9 and the screen member 10 in the drum 2 of FIG.
    It will be apparent to one skilled in the art that as technology advances, the inventive concept can be implemented in a variety of ways. The invention and its embodiments are not limited to the examples described above, but may vary within the scope of the claims.
    权利要求:
    Claims (10)
    [1]
    Claims 1. A drum (2) for a drum pulper (1) for dissolving recycled fiber material (F), the drum (2) having at least one lifting element (15) directed towards an internal volume of the drum (2), and Blade elements (19, 21, 33) for breaking the recycled fiber material (F), wherein the blade elements (19, 21, 33) are arranged at a distance from each other in a longitudinal direction of the drum (2), characterized in that the blade elements ( 19, 21, 33) have at least one sharpened section arranged substantially transversely to the longitudinal direction of the drum (2), and in that the blade elements (19, 22, 33) are arranged on an edge (15c) of the lifting element (15) are, wherein the edge (15c) of the lifting element (15) is directed towards the inner volume of the drum.
    [2]
    Drum drum pulper according to claim 1, characterized in that the drum (2) has a dissolving part (9) for dissolving the recycled fiber material (F) to be fed to the drum (2), and that the blade elements (19, 21, 33) are arranged at least in the dissolving part (9).
    [3]
    3. drum for a Trommelpulper according to claim 1 and 2, characterized in that the drum (2) has blade elements (19,21,33) between adjacent lifting elements (15,36).
    [4]
    Drum for a Trommelpulper according to claim 1, characterized in that the blade member is a plate blade (19) having a first edge (19 a) and a second edge (19 b), wherein the edges (19 a, 19 b) arranged converging to each other are so that at the point where the edges (19a, 19b) meet, there is a cam (19c) arranged so as to be arranged in the direction of rotation (R) of the drum (2).
    [5]
    A drum pulp drum according to claim 1, characterized in that the blade member is a bar blade (21) having an arm (21a) and a cam (21c) at a distal end (21b) of the arm (21a) the arm (21a) is bent to arrange the cam (21c) so as to face at least partially in the direction of rotation (R) of the drum (2).
    [6]
    Drum for a drum pulper according to claim 1, characterized in that the at least one lifting element (15, 36) is arranged in a longitudinal direction of the drum (2) in an oblique position with respect to a central axis of the drum (2).
    [7]
    7. drum for a Trommelpulper according to claim 6, characterized in that the lifting element (15,36) is a one-piece component of a housing (3) of the drum (2).
    [8]
    8. drum for a Trommelpulper according to claim 7, characterized in that the lifting element (15,36) and at least a part of the housing (3) are formed from the same housing blank.
    [9]
    9. Drum for a Trommelpulper according to claim 2, characterized in that the drum (2) has a moistening region (25) for moistening the drum (2) supplied to the fiber material (F).
    [10]
    10. drum for a Trommelpulper according to claim 1, characterized in that the drum (2) is rotatable. For this 7 sheets drawings
    类似技术:
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    同族专利:
    公开号 | 公开日
    FI126609B|2017-03-15|
    FI20136125A|2015-05-16|
    CN204266039U|2015-04-15|
    DE202014105430U1|2014-11-25|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE3210385A1|1982-03-20|1983-12-29|J.M. Voith Gmbh, 7920 Heidenheim|Screening drum|
    EP0218738A1|1985-10-12|1987-04-22|Hermann Finckh Maschinenfabrik GmbH & Co.|Process for pulping fibrous material, particularly a mixture of waste paper, and a drum for carrying out such a process|
    DE69206990T2|1991-06-07|1996-05-30|Ahlstroem Oy|METHOD AND DEVICE FOR TREATING WASTE PAPER|CN107227656A|2017-05-27|2017-10-03|安德里茨（中国）有限公司|Revolving drum dyeing machine|
    CN108570869B|2018-05-02|2020-11-10|湖北宝塔沛博循环科技有限公司|Multifunctional papermaking pulping system|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI20136125A|FI126609B|2013-11-15|2013-11-15|Drum Drum Powder and Drum Powder|
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