• 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:
    A refiner (1) has a stator (2) and a rotor (4). The stator and the rotor have a flat portion (7, 9) and a conical portion (8, 10). The conical section has a first end (17) of a smaller diameter (D1) and a second end (18) of a larger diameter (D2). The refining surface (12) of the conical section of the stator has dams (22) at a maximum of five-sixths of the total distance (D) between the first and second ends of the conical section starting from the first end of the conical section, so that at least three quarters of the wells are provided with dams and the remaining sixth of the refining surface has dams, so that a maximum of one quarter of the wells is provided with dams. Likewise, a lamellar segment (19) for a conical section (8) of a stator (2) of a refiner (1) is provided.
    公开号:AT13128U1
    申请号:TGM9005/2008U
    申请日:2008-09-25
    公开日:2013-06-15
    发明作者:
    申请人:Metso Paper Inc；
    IPC主号:
    专利说明:

    Austrian Patent Office AT13128U1 2013-06-15
    description
    REFINER
    BACKGROUND OF THE INVENTION
    The invention relates to a refiner having a stator and a rotor, wherein the stator and the rotor have a flat portion and a conical portion, wherein the conical portion has a first end of a smaller diameter and a second end of a larger diameter, so in that the first end of the smaller diameter conical portion is directed towards the flat portion and the second end of the larger diameter conical portion faces away from the flat portion, and wherein the flat portion and the conical portion have refining surfaces associated with fin strips and Lamella depressions are provided.
    The invention further relates to a fin segment of a refining surface of a refiner having a stator and a rotor, wherein the stator and the rotor have a flat portion and a conical portion, wherein the conical portion has a first end of a smaller diameter and a second Having a larger diameter end such that the first end of the smaller diameter conical portion is directed toward the flat portion and the second end of the larger diameter conical portion is directed away from the flat portion, and wherein the fin segment can be configured to that this forms at least a part of the refining surface of the conical portion of the stator, and wherein the lamellae segment has lamellae and lamellar recesses therebetween.
    Refiners for processing fiber material typically have two but possibly also more opposing refining surfaces, at least one of which is arranged to rotate about a shaft so that the refining surfaces rotate relative to each other. The refining surfaces of the refiner, in particular its lamellar surfaces or the lamella set typically consist of projections, in particular lamella strips, which are provided in the refining surface, and lamellar depressions between the lamella strips. In the following, the lamella strips are also referred to as strips and the lamellar depressions as depressions. The refining surface often consists of a plurality of lamella segments arranged side by side, in which case the refining surfaces of the individual lamellae segments together form an integral uniform refining surface.
    WO 97/18037 discloses a refiner which is provided with a stator, in particular a fixed fixed refining element and a refining element, which can be rotated by means of a shaft, in particular a rotor. Both the stator with its refining surface and the rotor with its refining surface are formed of a flat portion substantially perpendicular to the rotor shaft and a conical portion provided after this flat portion and angled with respect to the flat portion is arranged. The conical portion therefore has the first end of a smaller diameter and the second end of a larger diameter such that the first end of the smaller diameter conical portion is directed toward the flat portion of the refiner and the second end of the conical portion is directed toward the conical portion larger diameter is directed away from the flat portion of the refiner. The flat and conical portions of the stator and the rotor are spaced apart from each other so that a fin gap is formed between the refining surface of the stator and the refining surface of the rotor. The fiber material to be refined is conveyed into the slit gap between the flat portions of the stator and the rotor. When the material to be refined is processed, it moves towards the fin gap between the refining surfaces of the flat portion and further into the fin gap between the refining surfaces of the conical portion and finally away from the fin gap.
    Fig. 2 is a schematic view of a refining surface of a fin segment for a conical section of a stator typically used in the refiners, as disclosed, for example, in WO 97/18037. The lamellar segment 19 of FIG. 2 according to the prior art has a refining surface 12 with lamella strips 20 and lamella depressions 21 between the lamella strips 20. Also located between the fin strips 20 are dams 22 whose purpose is to align the material that is to be refined and run in the fin recess between the fin strips of the stator and the rotor refining surface. The refining surface of the lamination segment for the conical section of the stator in refiners having a flat section and a conical section has numerous dams distributed over the entire refining surface area.
    In general, it has been assumed that the dams enhance the refining effect. However, recent studies have shown that the dams do not really have that effect. The dams cause the material to be refined to flow through the fin gap as a thin layer and at high speed so that the refiner can not be sufficiently loaded. In this case, the defibering effect and the starting or production capacity of the refiner remain low. If the purpose is to achieve a good degree of grinding, the production capacity must be reduced. Due to the reduced production capacity, the material to be refined may remain in the sipe gap for a longer time and thus may become a degree of grinding higher.
    The dams also cause the set of laminations of the stator of the refiner having both the flat portion and the conical portion to become very easy due to the material to be refined. Due to this blocking, the flow volume for the steam formed during grinding decreases from the previous state, which reduces the loading capacity of the refiner and thus reduces the degree of grinding or the production capacity.
    SUMMARY OF THE INVENTION
    An object of the invention is a novel refiner that provides an improved refining result.
    The refiner of the invention is characterized in that the refining surface of the conical section of the stator has dams with a maximum of five-sixths of a total distance between the first and second ends of the conical distance, starting from the first end of the conical distance, so that at least three quarters of the lamellar depressions are provided with dams and that the remaining one-sixth of the refining surface of the conical section of the stator has dams, so that a maximum of a quarter of the lamella depressions is provided with dams.
    A lamellar segment of the invention is characterized in that the refining surface of the lamellar segment of the conical section of the stator has dams with a maximum of five-sixths of the total distance between the inner and outer circumference of the lamellar segment starting from the inner circumference of the lamellar segment, so that at least three quarters of the lamellar depressions are provided with dams and that the remaining one-sixth of the refining surface of the conical section of the stator has dams, so that a maximum of a quarter of the lamella depressions is provided with dams.
    A refiner has a stator and a rotor, wherein the stator and the rotor have a flat portion and a conical portion. The conical section has a first end of a smaller diameter and the second end of a larger diameter such that the first end of the smaller diameter conical section faces the flat portion of the refiner and the second end of the larger diameter conical section faces the flat one Section of the refiner is directed away. The flat portion and the conical portion have refining surfaces provided with fin strips and fin recesses. The refining surface of the conical section of the stator has dams at a maximum of five-sixths of the total distance between the first and second ends of the conical section starting from the first end of the conical section. so that at least three quarters of the lamellar depressions are provided with dams and that the remaining one-sixth of the refining surface of the conical section of the stator has dams, so that a maximum of a quarter of the lamella depressions is provided with dams.
    By providing a refining surface of the conical section of the stator so that there is only a very limited number of dams in the immediate vicinity of the second end of the conical section of the stator refining surface, it is possible to achieve an improved pulp quality as the steam or the moisture which is formed during the refining and the fibers which are conveyed by the steam can flow more freely towards the outlet of the fin gap. This reduces the vapor velocity and in this way increases the fiber residence time at the refining surface. This further improves the stability and uniformity of the refining and thus provides improved pulp quality.
    A very limited number of dams, at least in the immediate vicinity of the second end of the conical section of the stator refining surface, also reduces the possibility that the set of laminations will be blocked, because the flow volume for the steam formed during grinding remains so high in that the steam can escape effectively from the lamella gap. However, the material to be refined does not leak out of the vane gap with the vapor because the fin strips slow the flow of the material to be refined out of the vane gap, thus enabling efficient defibering and high refiner production capacity.
    BRIEF DESCRIPTION OF THE FIGURES
    Some embodiments of the invention will be discussed in detail with reference to the accompanying drawings, in which: Figure 1 is a schematic view of a refiner to which the disclosed solution of a refining surface can be applied; Fig. 2 is a schematic view of a refining surface of a fin segment of a conical section of a prior art stator; Fig. 3 is a schematic view of a fin segment of a conical section of a stator.
    For clarity, some embodiments of the invention are simplified in the figures. Similar parts are designated by like reference numerals.
    DETAILED DISCLOSURE OF SOME EMBODIMENTS OF THE INVENTION
    Fig. 1 is a schematic view of a refiner 1 for refining fibrous material. The refiner 1 is provided with a fixed stator 2 which is supported on a frame of the refiner 1 not shown in FIG. The stator 2 has a frame section 3 of the stator 2 and a refining surface, which consists of lamella strips and lamella depressions, in particular a stator lamella or a lamella set. Furthermore, the refiner 1 is provided with a rotor 4 with a frame section 5 of the rotor 4 and a refining surface consisting of lamella strips and lamellar depressions, in particular a rotor lamella or a lamella set. The rotor 4 is arranged to be rotated by a shaft 6 and a motor, not shown. The stator 2 has a flat portion 7 and a conical portion 8. The rotor 4 has a flat section 9 and a conical section 10 correspondingly. The flat portions 7 and 9 are arranged substantially perpendicular to the shaft 6 and the conical portions 8 and 10 are arranged at a predetermined angle to the flat portions 7 and 9. The conical section of the refiner 1 therefore has a first end 17 of a smaller diameter D1 and a second end 18 of a larger diameter D2, so that the first end 17 of the conical section with smaller diameter D1 is directed to the flat portion and the second end 18 of the conical portion of larger diameter D2 is directed away from the flat portion. The first end 17 of the smaller diameter conical portion D1 may also be referred to as the inner periphery of the conical portion, and the second end 18 of the larger diameter conical portion D2 may also be referred to as the outer periphery of the conical portion. The diameters D1 and D2 are schematically plotted in Fig. 1 at the extreme points of the respective refining surfaces of the flat and conical portions of the stator.
    The flat portion 7 of the stator 2 has a refining surface 11 and the conical portion 8 of the stator 2 has a refining surface 12. The flat section 9 of the rotor 4 has a refining surface 13 and the conical section 10 of the rotor 4 has a refining surface 14. The rotor 4 is arranged at a distance from the stator 2 so that a fin gap 15 remains between the refining surfaces of the rotor 4 and the refining surfaces of the stator 2. The dimension of the sipe gap 15 may typically be set separately at the flat portion and the conical portion. The fiber material to be refined is conveyed by means of a feed screw 16, for example, through the center of the flat portion 7 of the refining surface 11 of the stator 2 to the fin gap 15 where the fiber material is refined and simultaneously between the flat portion 7 of the refining surface 11 of the stator 2 and the flat portion 9 of the refining surface 13 of the rotor 4 in the direction of a portion between the conical sections 8, 10 in the slit gap 15 and finally moved away from the slat gap 15. A person skilled in the art is familiar with the general structure and operating principle of refiners, and these are therefore not discussed further in this context.
    FIG. 3 is a schematic view of a fin segment 19 for the conical section 8 of the stator 2, wherein the fin segment 19 is to form part of the integral refining surface 12 of the conical section 8 of the stator 2. The fin segment 19 has an inner periphery or rim 23 to be disposed at the first end 17 of the conical portion 8 of the stator 2, and the outer periphery or rim 24 to be disposed at the second end of the conical portion 8 of the rotor 4. The refining surface 12 has lamella strips 20 and lamellar depressions 21 between the lamella strips 20. The fin strips 20 take care of refining the fibrous material to be refined, and the fin depressions 21 carry the fibrous material to be refined as well as the refined material forward, as well as promoting the steam or water vapor formed during refining from the slat gap 15. The fin segment 19 further includes dams 22 at the bottom of the fin recesses 21 between the fin strips 20, the purpose of the dams being to direct or transfer the material to be refined and traveling in the fin depressions between the fin strips of the stator and the rotor refining surfaces.
    The refining surface 12 of the lamellar segment 19 of the conical section 8 of the stator 2 in Fig. 3 has dams 22, so that the refining surface 12 dams 22 with a maximum distance of about 0.7 x D of the total distance D between the inner 23 and the outer periphery 24 of the lamellae segment 19 starting from the inner periphery 23 of the lamellar segment 19 has. Thus, the lamellar segment 19 has the length corresponding to the distance D from the inner circumference 23 of the lamellar segment 19 to the outer periphery 24 of the lamellar segment 19 and has only 0.7 in maximum D of the total distance D starting from the inner periphery 23 of the lamellar segment 19 dams 22 on. In other words, the fin segment 19 has a zone 25 on the outer periphery 24, the zone 25 having no dams 22 at all. In the embodiment shown in FIG. 3, this zone has a length which is approximately 0.3 × D starting from the outer circumference 24 of the lamellar segment 19 in the direction of the inner circumference 23 of the lamellar segment 19.
    In the solution, the refining surface 12 of the conical section 8 of the stator 2 dams 22 with a maximum of five-sixths of the total distance D between the inner 23 and the outer 24 Scope of the lamellar segment 19 starting from the inner periphery 23 of the lamellar segment 19, so that at least three quarters of the lamella depressions 21 are provided with dams 22 and that the remaining sixth of the refining surface 12 of the conical portion 8 of the stator 2 dams 22 so that maximum a quarter of the lamella recesses 21 is provided with dams 22.
    It is also possible that the refining surface 12 of the conical portion 8 of the stator 2 dams 22 with a maximum of two thirds of the total distance D between the first 17 and second 18 end of the conical section 8, starting from the first end 17th of the conical section 8, so that at least three quarters of the lamellar recesses 21 are provided with dams 22 and that the remaining third of the refining surface 12 of the conical section 8 of the stator 2 has dams 22, so that a maximum of a quarter of the lamella recesses 21 provided with dams 22 is.
    It is also possible that the refining surface 12 of the conical portion 8 of the stator 2 dams 22 with the distance of a maximum of one half of the total distance D between the first 17 and second 18 end of the conical portion 8, starting from the first end 17 of the conical end 8, so that at least three quarters of the lamella recesses 21 are provided with dams 22 and the remaining half of the refining surface 12 of the conical portion 8 of the stator 2 dams 22, so that a maximum of a quarter of the lamella recesses 21 provided with dams 22 is.
    The effect of, in particular, that a very limited number of dams 22 is provided in the immediate vicinity of the outer periphery 24 of the refining surface 12 of the conical section of the stator, is that the movement of the material to be refined, and of the refined material in practice is not blocked by the dams. As the dams reduce the open area for the flow of steam or water vapor formed during refining, the dams increase the velocity of the steam and the fibers that flow with the steam, and therefore reduce the residence time of the fibers in the refining surface area so that the quality of the pulp and the uniformity of the refining deteriorate. By removing the dams, as disclosed, the steam is free to flow toward the outlet of the fin gap. This reduces the vapor velocity and increases the fiber residence time at the refining surface, thus improving the stability and uniformity of the refining and therefore providing better pulp quality.
    Fig. 3 discloses a solution in which the refining surface 12 of the conical portion 8 of the stator 2 dams 22 only at the portion of a maximum of three quarters of the entire portion D between the first end 17 and the second end 18 of the conical section. 8 starting from the first end 17 of the conical section 8 of the stator 2. That is, there is a refining surface 225 on the outer periphery of the conical portion 8 of the stator 2, with no dams 22 at all. This type of refining surface solution is very well suited to the conical section of the stator. The section of the refining surface that has no dams whatsoever may vary. Therefore, it is possible that the refining surface 12 of the lamellar segment for the conical portion 8 of the stator 2 dams 22 only at the distance of, for example, a maximum of one half or one quarter of the total distance D between the inner 23 and the outer 24 circumference of the lamellar segment 19 starting from the inner periphery 23 of the louver segment 19 has. It is also possible that the refining surface 12 of the conical section of the stator 2 has no dams 22 at all.
    The larger the portion of the refining surface 12 without dams, the more freely the steam and fibers can travel with the vapor from the first end 17 of the smaller diameter conical portion towards the second end 18 of the conical portion move. The above-described refining surfaces are particularly useful in the conical section of the stator in high consistency refiner. Refiner with high consistency can be used both as refiner of the first phase for refining wood chips and as refiner of the second phase or another refiner for further refining of wood chips that are already refined are, or fiber pulp or other fiber-containing material. For high consistency refiners, the consistency of the material to be refined is typically 25% or 30%. Due to the bulk density, the flow of the material that is to be refined and the flow of the material that has been refined occurs mainly in the vapor or water vapor phase. Since the fin gap at the outer zone of the conical section of the stator is filled with steam in high consistency refiners near the outer periphery or the second end of the conical section, typically steam from the fin gap from the refiner becomes very simple and high At the same time, the speed is increased, while at the same time carrying a lot of fibers out of the slit gap, this effect being normally enhanced to some extent by the dams near the outer circumference of the conical section. Now, due to the lack of dams at least near the outer circumference of the conical section of the stator, the vapor velocity near the outer periphery of the conical section of the stator is reduced, thus increasing the fiber residence time at the refining surface and thus improving the pulp quality. as discussed above.
    The solutions of a refining surface described above may also be used in a conical section of the stator in low-consistency refiners. For low consistency refiners, the consistency of the material to be refined is typically below 8% and often below 5%. Due to the low consistency, the flow of the material to be refined and the flow of the material that has been refined takes place in low consistency refiners mainly in the liquid phase containing water and fibers, the amount of steam being minimal , Typically there is no steam at all.
    The dimension of the fin gap in low consistency refiners is typically smaller than that of the high consistency refiners. Due to the larger fin gap and the high consistency, the amount of material to be refined is higher for high consistency refiners than for low consistency refiners. This means that the treatment of the fibers in high consistency refiners takes place more than fiber-to-fiber contact than the low-consistency refiners, with fiber-to-fiber contact increasing the degree of refining. Because of these characteristics, the amount of energy used for refining is higher in the high consistency refiners than in the low consistency refiners, meaning that a lot of steam is generated during refining in the high consistency refiners. Because of this steam, refining of high consistency refiners requires a larger flow volume than the low consistency refiners, with milling in the liquid phase with water and fibers. Therefore, in the high-consistency refiners, the larger flow volume is particularly advantageous, and the larger flow volume can be achieved by reducing the number of dams in the conical section of the stator. The larger slat gap of the high consistency refiner also provides a higher production capacity than the low consistency refiner.
    Due to the lower fabric density, the amount of fibers in the low-consistency refiners is lower than in high-consistency refiners. Since low consistency refiners take place in the liquid phase refining with water and fibers and require less energy in low consistency refiners than in high consistency refiners, the need for a high flow volume is not as critical with low consistency refiners Refiners with high consistency. However, the dams reduce the production capacity of the low consistency refiner as well. Since the blocking of the set of laminations due to the material to be refined is less of a problem for low consistency refiners than for high consistency refiners, the advantages of the refining surface solution described above are not so significant in refining. 13 Austrian Patent Office AT13 128U1 2013-06-15 low-consistency compared to high consistency refiners.
    The rotational speed of the rotor of the low consistency refiners is also much lower than that of the high consistency refiners. The higher peripheral speed of the rotor in high consistency refiners impairs the milling of the high consistency refiner so that the number of collisions with the material to be refined by the fin strips is much greater in the high consistency refiners than in the refiner low consistency is. Partly due to this fact, the high consistency refiner can be loaded more than the low consistency refiner. The high load means high energy consumption, a large amount of steam and a further need for a large flow volume, it follows that the above-described solution of a refining surface is particularly suitable for high-consistency refiner. The higher the peripheral speed of the rotor, the more likely the fibers to accumulate closer to the dams of the stator, resulting in the blockage of the stator blade set. Due to the lower speed of the rotor in the low consistency refiners, the effect of the speed of the rotor on the flow of the material to be refined is not as significant with low consistency refiners as with high consistency refiners. This highlights the advantages of using the above-described solution of a refining surface in high consistency refiners, whereby the blockage of the stator blade set can be effectively reduced by reducing the number of dams on the conical section of the stator.
    The advantages of the solution are thus highlighted in refiners with high consistency, wherein the grinding takes place in the vapor phase. During milling, the steam can effectively flow out of the fin gap over the fin depressions without dams. Since the fin depressions of the conical section of the stator prevent the flow of material to be refined, the fibrous material still remains under the influence of refining. In low consistency refiners, where the liquid phase milling takes place, the refined material and water from the slat gap are easier to pass than before, thereby increasing the production capacity of the refiner.
    The solution of a refining surface described above may also be used in a similar manner at the conical section of the stator of medium consistency refiners wherein the consistency of the material to be refined is typically between 8% and 25%.
    In some cases, the features disclosed in the present application may be used unchanged regardless of the other features. On the other hand, the features disclosed in this application can be combined to produce different combinations, if necessary.
    The drawings in the relevant description are intended to represent only the inventive idea. The details of the invention may vary within the scope of the claims. 7.13
    权利要求:
    Claims (14)
    [1]
    Austrian Patent Office AT 13 128 Ul 2013-06-15 Claims 1. Disc-cone refiner (1) with a stator (2) and a rotor (4), wherein the stator (2) and the rotor (4) have a flat section (7 9) and a conical section (8, 10), the conical section (8, 10) having a first end (17) of a smaller diameter (D1) and a second end (18) of a larger diameter (D2), such that the first end (17) of the smaller diameter conical portion (8, 10) is directed towards the flat portion (7, 9) and the second end (18) of the conical portion (8, 10) is directed at a larger one Diameter (D2) of the flat portion (7, 9) is directed away, and wherein the flat (7, 9) and the conical portion (8, 10) refining surfaces (11, 12, 13, 14), which with lamella strips (20) and lamellar depressions (21) are provided, characterized in that the refining surface (12) of the conical portion (8) of the stator (2) dams (22) at the distance v a maximum of five sixths of the total distance (D) between the first end (17) and the second end (18) of the conical section (8) starting from the first end (17) of the conical section (8), so that at least three Quarter of the lamellar recesses (21) are provided with dams (22), and that the remaining one-sixth of the refining surface (12) of the conical section (8) of the stator (2) dams (22), so that a maximum of a quarter of the lamellar depressions (21 ) is provided with dams (22).
    [2]
    2. Disc-cone refiner according to claim 1, characterized in that the refining surface (12) of the conical portion (8) of the stator (2) dams (22) at the distance of a maximum of two thirds of the total distance (D) between the first end (17) and the second end (18) of the conical portion (8) starting from the first end (17) of the conical portion (8), so that at least three quarters of the lamella recesses (21) are provided with dams (22) and the remaining third of the refining surface (12) of the conical section (8) of the stator (2) has dams (22), so that a maximum of one quarter of the lamella depressions (21) is provided with dams (22).
    [3]
    3. disc-cone refiner according to claim 1 or 2, characterized in that the refining surface (12) of the conical portion (8) of the stator (2) dams (22) at the distance of at most one half of the total distance (D) between the first end (17) and the second end (18) of the conical section (8) starting from the first end (17) of the conical section (8), so that at least three quarters of the lamellar recesses (21) provided with dams (22) are and that the remaining half of the Refinerfläche (12) of the conical section (8) of the stator (2) dams (22), so that a maximum of a quarter of the lamellar recesses (21) is provided with dams (22).
    [4]
    4. Disc-cone refiner according to claim 1, characterized in that the refining surface (12) of the conical portion (8) of the stator (2) dams (22) only at the distance of a maximum of five sixths of the total distance (D) between the first End (17) and the second end (18) of the conical portion (8) starting from the first end (17) of the conical portion (8) of the stator (2).
    [5]
    5. disc-cone refiner according to claim 2 or 3, characterized in that the refining surface (12) of the conical portion (8) of the stator (2) dams (22) only at the distance of a maximum of two-thirds or one half of the total distance ( D) between the first end (17) and the second end (18) of the conical section (8) starting from the first end (17) of the conical section (8) of the stator.
    [6]
    6. disc cone refiner according to one of the preceding claims, characterized in that the refining surface (12) of the conical portion (8) of the stator (2) has no dams.
    [7]
    7. Disc-cone refiner according to one of the preceding claims, characterized in that the refiner (1) is a refiner with high consistency. 8/13 Austrian Patent Office AT13 128U1 2013-06-15
    [8]
    8. lamellar segment (19) of a Refinerfläche a disc cone refiner (1) with a stator (2) and a rotor (4), wherein the stator (1) and the rotor (4) has a flat portion (7, 9) and a conical section (8, 10), wherein the conical section (8) has a first end (17) of a smaller diameter (D1) and a second end (18) of a larger diameter (D2), so that the first end (17 ) of the smaller diameter conical portion (8) is directed toward the flat portion (7, 9), and the second end (18) of the larger diameter conical portion (8) (D2) is directed from the flat portion (8, 10), and wherein the fin segment (19) can be configured to form at least part of the refining surface (12) of the conical portion (8) of the stator (2) such that an inner periphery (23) of the fin segment (19) at the first end (17) of the conical portion (8) of the stator (2) can be arranged and an outer the periphery (24) of the sipe segment (19) can be arranged at the second end (17) of the conical section (8) of the stator (2), and wherein the sipe segment (19) has sipe strips (20) and sipe recesses (21) therebetween , and at least one dam at the bottom of at least one lamella depression between two lamellar strips, characterized in that the refining surface (12) of the lamellar segment (19) for the conical section (8) of the stator (2) comprises dams (22) at the distance from a maximum of five-sixths of the total distance (D) between the inner (23) and outer (24) circumference of the lamellar segment (19) starting from the inner circumference (23) of the lamellar segment (19), so that at least three quarters of the lamellar depressions (19) 21) are provided with dams (22) and that the remaining sixth of the refining surface (12) of the conical portion (8) of the stator (2) has dams (22), so that a maximum of one quarter of the lamella depressions (21) with insulation en (22) is provided.
    [9]
    9. lamellar segment according to claim 8, characterized in that the refining surface (12) of the lamellar segment (19) for the conical section (8) of the stator (2) dams (22) at the distance of a maximum of two-thirds of the total distance (D) between the inner (23) and the outer (24) circumference of the lamellar segment (19) starting from the inner periphery (23) of the lamellar segment (19), so that at least three quarters of the lamellar depressions (21) are provided with dams (22) and that the remaining third of the refining surface (12) of the conical section (8) of the stator (2) dams (22), so that a maximum of a quarter of the lamella recesses (21) is provided with dams (22).
    [10]
    10. lamellar segment according to claim 8 or 9, characterized in that the refining surface (12) of the lamellar segment (19) for the conical section (8) of the stator (2) dams (22) at the distance of at most one half of the total distance ( D) between the inner (23) and the outer (24) circumference of the lamellar segment (19) starting from the inner periphery (23) of the lamellar segment (19), so that at least three quarters of the lamella depressions (21) with dams (22) are provided and that the remaining half of the refining surface (12) of the conical portion (8) of the stator (2) dams (22), so that a maximum of a quarter of the lamellar recesses (21) is provided with dams (22).
    [11]
    11. lamellar segment according to claim 8, characterized in that the refining surface (12) of the lamellar segment (19) for the conical section (8) of the stator (2) dams (22) only at the maximum distance of five sixths of the total distance (D ) between the inner circumference (23) and the outer periphery (24) of the lamellar segment (19) starting from the inner periphery (23) of the lamellar segment (19).
    [12]
    12. lamellae segment according to claim 9 or 10, characterized in that the refining surface (12) of the lamellar segment (19) for the conical portion (8) of the stator (2) dams (22) only at the distance of a maximum of two thirds or a half the entire distance (D) between the inner periphery (23) and the outer periphery (24) of the lamellar segment (19) starting from the inner periphery (23) of the lamellar segment (19). 9/13 Austrian Patent Office AT13 128U1 2013-06-15
    [13]
    13. lamellar segment according to one of the preceding claims 8 to 12, characterized in that the refining surface (12) of the lamellar segment (19) for the conical portion (8) of the stator (2) has no dams.
    [14]
    14. slat segment according to one of the preceding claims 8 to 13, characterized in that the refiner (1) is a disc-cone refiner with high consistency. 3 sheets of drawings 10/13
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    同族专利:
    公开号 | 公开日
    WO2009040477A8|2009-06-11|
    FI20075688A|2009-03-29|
    WO2009040477A1|2009-04-02|
    DE212008000081U1|2010-08-19|
    CN201835175U|2011-05-18|
    FI20075688A0|2007-09-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US6024308A|1998-11-11|2000-02-15|J&L Fiber Services, Inc.|Conically tapered disc-shaped comminution element for a disc refiner|
    WO2007085703A1|2006-01-30|2007-08-02|Metso Paper Inc|Refiner|
    US5181664A|1992-04-17|1993-01-26|Andritz Sprout-Bauer, Inc.|Grinding plate with angled outer bars|
    SE505395C2|1995-11-13|1997-08-18|Sunds Defibrator Ind Ab|A pair of interacting grinding elements intended for a disc refiner|DE102013000593A1|2013-01-16|2014-07-17|Cvp Clean Value Plastics Gmbh|Apparatus and method for removing contaminants on plastic chips|
    SE537820C2|2014-02-10|2015-10-27|Valmet Oy|refiner|
    SE539716C2|2016-06-15|2017-11-07|Valmet Oy|Refiner plate segment with pre-dam|
    SE542325C2|2018-06-04|2020-04-07|Valmet Oy|Refiner segment with dams having curved sides|
    法律状态:
    2018-11-15| MK07| Expiry|Effective date: 20180930 |
    优先权:
    申请号 | 申请日 | 专利标题
    FI20075688A|FI20075688A|2007-09-28|2007-09-28|Refiner|
    PCT/FI2008/050537|WO2009040477A1|2007-09-28|2008-09-25|Refiner|
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