• 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:
    The invention relates to a device for the mechanical treatment of high-consistency fibrous material (1) having a housing (2) in which a first treatment tool (3) and a second treatment tool (4) are arranged to form a treatment gap, wherein the treatment tools (3,4 ) each have a rotationally symmetrical shape, coaxial with each other, rotate relative to each other, in each case in a plurality of annular concentric to their center rows (5) arranged teeth (6), between which there are tooth gaps, of the fibrous material (1) radially flowed through, at least a portion of the tooth spaces elevations (7), which extend beyond the, between the rows of teeth (5) tooth root (8) and between the rows of teeth (5) annular spaces are provided, which are arranged so that at least one Tooth row (5) of a treatment tool (3,4) in an annular space of the other, complementary Treatment Tool (4,3) extends. In this case, an efficient fiber treatment with minimal power requirement is to be made possible by the fact that the respective maximum height of the elevations (7) over the tooth base (8) increases radially outward.
    公开号:AT15913U1
    申请号:TGM9008/2016U
    申请日:2016-06-28
    公开日:2018-09-15
    发明作者:
    申请人:Voith Patent Gmbh；
    IPC主号:
    专利说明:

    description
    disperser
    The invention relates to a device for the mechanical treatment of high-consistency pulp with a housing in which a first treatment tool and a second treatment tool for forming a treatment gap is arranged, wherein the treatment tools each have a rotationally symmetrical shape, are arranged coaxially to each other, relative to each other rotate, each having in a plurality of annular, concentric to their center rows of teeth between which are tooth spaces, which are flowed through radially by the fibrous material, at least a portion of the tooth gaps has elevations that extend beyond the running between the rows of teeth tooth base and between the rows of teeth are annular spaces which are arranged so that at least one row of teeth of a treatment tool extends into an annular space of the other, complementary treatment tool.
    Due to the high consistency, which has the pulp in the treatment, an intensive mechanical processing in such devices (Entstipper, Disperger, Refiner) is possible, although the relatively movable treatment tools do not touch, but rather at a distance of 1mm or more past each other. Here are quite significant forces on the teeth.
    Devices of the above-mentioned Art be z. B. used to improve the quality of pulp, which was obtained from waste paper.
    It is known that paper pulp can be homogenized by dispersing and thereby significantly improved. In many cases, a pulp is used which has a dry content of between 15 and 35% and has been brought to a temperature which is far above the ambient temperature.
    It is useful to carry out the heating when the pulp already has its required for dispersion consistency.
    Disadvantages are the tendency to blockage associated with a fluctuating power consumption and a very high power consumption with closed treatment gap.
    The object of the invention is therefore to enable a uniform and efficient treatment of the pulp with the lowest possible power consumption.
    According to the invention this object is achieved in that the respective maximum height of the elevations increases radially outward over the tooth base.
    Because of the lower height of the elevations, blockage can be effectively counteracted, particularly in the endangered, radially inner region of the treatment tools. Usually, the tooth spaces are largely flat and formed approximately at the level of the annular spaces between the rows of teeth.
    Due to the surveys of the pulp can no longer pass radially unhindered through the tooth gaps, which significantly increases the efficiency of the treatment. Therefore, it is also advantageous if the vast majority, preferably all tooth gaps have elevations that extend beyond the tooth base.
    In order not to affect the flow and to minimize wear, the teeth and the elevations each have a flat, pointing to the treatment gap head surface.
    In this case, the surface normal of the top surface of the elevations can be perpendicular to the radial or form an angle of less than 90 ° with the radial direction.
    For the treatment but also the wear resistance, it is advantageous if the elevations have a teeth-like cross-section in the radial direction, the preference, as a truncated pyramid is formed.
    Accordingly, the teeth and protrusions have an outgoing from the respective annular space reason, which leads via radially extending flanks to the corresponding head surface.
    In the interests of a trouble-free flow through the treatment gap as possible, each of two adjacent teeth and the intermediate survey flow cross-section should change in the radial direction by a maximum of 40%, in particular at most 10%, preferably remain approximately constant.
    Because of the radially inwardly decreasing maximum height of the elevations, the circumferentially measured maximum width of the teeth should increase radially inward to ensure sufficient stability of the teeth.
    In this case, the width of the individual teeth measured in the circumferential direction can each remain constant in the radial direction or preferably increase continuously in the opposite direction to the radial direction.
    The efficiency of the treatment can be further increased if teeth and / or elevations, preferably have radially extending grooves.
    As radially extending grooves are understood that extend at least with a directional component perpendicular to the circumferential direction of the treatment tool. While the treatment tools move relative to each other, the radially extending grooves form additional working edges, which improves the dispersion, in particular the dirt dot comminution, the ink separation and the sticky comminution.
    In this way, the energy consumption and wear can be significantly reduced.
    Depending on the nature and condition of the device and / or the pulp, it may be advantageous if the groove extends over the entire tooth or the entire survey or only over part of the tooth or the survey.
    Although both treatment tools can rotate and thereby move relative to each other, the device is simplified when a treatment tool rotates and the other is fixed.
    In practice, it has also proven itself when the pulp flows through the rows of teeth radially outward.
    Particularly, the device is suitable as a disperser for dispersing the pulp, the high number of edges, especially in the tooth gaps, significantly increases the efficiency of the treatment.
    The invention will be explained in more detail using an exemplary embodiment. In the attached drawing: FIG. 1 shows a schematic cross section through a disperser; Figure 2: a partial cross section through a treatment tool 3.4 in the radial direction 9; Figure 3: a partial plan view of a treatment tool 3.4 and Figure 4: a partial cross section through a treatment tool 3.4 in the circumferential direction.
    The high-consistency paper pulp 1 is pressed according to Figure 1 directly into the central region of the Dispergergarnitur, which is formed by the two treatment tools 3.4. In this case, the fibrous material 1 flows through the treatment gap, which is limited by the treatment tools 3, 4, radially outwardly. While a treatment tool 3 is stationary and thus designed as a stator, the other treatment tool 4 is rotatable in
    Housing 2 of Dispergers stored.
    The Dispergergarnitur with the stator and the rotor is thus fed radially inward.
    As is known, dispersion is effected by moving teeth 6 relatively close together at relatively high speed and subjecting the fibrous material 1 therebetween to strong shear forces.
    For this purpose, the pulp 1 can be previously heated by superheated steam. After dispersion, the dispersed pulp 1 falls down through the outlet 16.
    As a result, when the axial position of the stator and the rotor is changed relative to each other, the gap between them also changes, whereby the performance of the disperser can be controlled in a manner known per se.
    The treatment tools 3,4 each have a rotationally symmetrical shape. In this case, the coaxially arranged treatment tools 3,4 each have in a plurality of annular, concentric to their center rows 5 arranged teeth 6, between which there are tooth gaps, which are flowed through by the pulp 1 radially outward. Between the rows of teeth 5 there are annular spaces which are arranged so that at least one row of teeth 5 of a treatment tool 3,4 extends into an annular gap of the other, complementary treatment tool 4,3.
    According to the invention, all tooth gaps elevations 7, which extend beyond the tooth base 8 of the teeth 6. Here, the elevations 7 and the teeth 6, as seen in Figures 2 and 3, a similar, approximately truncated pyramid-shaped cross-section in the radial direction. 9
    Accordingly, the teeth 6 and the elevations 7 each have a flat, pointing to the treatment gap head surface 10, which pass over radial flanks 17 to the tooth base 8.
    With the elevations 7, the flow through the tooth gaps is hindered as far as it is conducive to the treatment of the pulp 1.
    In order to reduce the risk of clogging, the elevations 7 in the radially inner region are relatively low, wherein the respective maximum height of the elevations 7 increases radially outward over the tooth base 8. While the maximum height of the elevations 7 radially outwardly corresponds to approximately 55 to 75% of the height of the teeth 6, this maximum height reduces radially inward to values between 35 and 50% of the height of the teeth 6.
    In Figure 3, the top surfaces 10 are parallel to the treatment nip, i. the surface normal 11 of the head surface 10 of the elevations 7 is perpendicular to the radial. In contrast, FIG. 2 shows inclined top surfaces 10.
    Accordingly, in FIG. 2, the surface normal 11 of the top surface 10 of the elevations 7 forms, with the radial direction 9, an angle 12 of less than 90 °, the top surfaces 10 forming a line 18 in the radial direction 9.
    To ensure a continuous flow through the tooth gaps in the radial direction 9 is, as Figure 4 shows, each of two adjacent teeth 6 and the intermediate elevation 7 limited flow cross-section 13 viewed in the radial direction 9 over the entire treatment gap approximately constant.
    In all of the illustrated teeth 6 each measured in the circumferential direction width 14 of the teeth 6 in the radial direction 9 is constant. However, the respective circumferentially measured width 14 increases radially inwardly from row of teeth 5 to row of teeth 5. This strengthens the stability of the teeth 6 due to the small height of the elevations 7 in the radially inner area. While the teeth 6 have a width 14 between 2.5 and 4 mm radially outwardly, this width increases inwardly to values between 5 and 8 mm.
    The width of the elevations 7 in the circumferential direction is approximately equal and is between 1.5 and 6 mm.
    To improve the flow and to form additional working edges for efficient treatment of the pulp 1, the teeth 6 and / or the elevations 7, as shown in Figures 2 and 3, grooves 15 preferably with a directional component in the radial direction. 9 have.
    These grooves 15 may extend over the entire tooth 6 or the entire elevation 7 or only a part thereof. In this case, the partial extent, for example, exclusively via the top surface 10 or exclusively via a flank 17.
    权利要求:
    Claims (14)
    [1]
    claims
    1. An apparatus for the mechanical treatment of high-consistency pulp (1) with a housing (2) in which a first treatment tool (3) and a second treatment tool (4) is arranged to form a treatment gap, wherein the treatment tools (3,4) each have a rotationally symmetrical shape, coaxial with each other, rotate relative to each other, in each case in a plurality of annular, concentric to their center rows (5) arranged teeth (6), between which there are tooth gaps, which are flowed through radially by the fibrous material (1) at least a part of the tooth spaces has elevations (7) which extend beyond the tooth base (8) running between the rows of teeth (5) and between the rows of teeth (5) there are annular spaces which are arranged such that at least one row of teeth ( 5) of a treatment tool (3,4) in an annular space of the other, complementary treatment tool (4, 3), characterized in that the respective maximum height of the elevations (7) over the tooth base (8) increases radially outward.
    [2]
    2. Apparatus according to claim 1, characterized in that the elevations (7) have a flat, pointing to the treatment gap head surface (10).
    [3]
    3. A device according to claim 2, characterized in that the surface normal (11) of the head surface (10) of the elevations (7) extends perpendicular to the radial.
    [4]
    4. Apparatus according to claim 2, characterized in that the surface normal (11) of the head surface (10) of the elevations (7) with the radial direction (9) forms an angle (12) of less than 90 0.
    [5]
    5. Device according to one of the preceding claims, characterized in that the predominant part, preferably all tooth gaps elevations (7), which extend beyond the tooth base (8).
    [6]
    6. Device according to one of the preceding claims, characterized in that the elevations (7) have a teeth (6) similar cross section in the radial direction (9), which is preferably formed truncated pyramid.
    [7]
    7. Device according to one of the preceding claims, characterized in that each of two adjacent teeth (6) and the intermediate elevation (7) limited flow cross-section (13) in the radial direction (9) by a maximum of 40%, in particular at most 10% changes, preferably remains approximately constant.
    [8]
    8. Device according to one of the preceding claims, characterized in that the measured in the circumferential direction, the maximum width (14) of the teeth (6) decreases radially outwards.
    [9]
    9. Apparatus according to claim 8, characterized in that the width measured in the circumferential direction (14) of the teeth (6) in each case in the radial direction (9) is constant.
    [10]
    10. The device according to claim 8, characterized in that the width measured in the circumferential direction (14) of the teeth (6) in the radial direction (9) preferably decreases continuously.
    [11]
    11. Device according to one of the preceding claims, characterized in that teeth (6) and / or elevations (7), preferably radially extending grooves (15) have.
    [12]
    12. Device according to one of the preceding claims, characterized in that a treatment tool (4) rotates and the other (3) is fixed.
    [13]
    13. Device according to one of the preceding claims, characterized in that the fibrous material (1) flows through the rows of teeth (5) radially outward.
    [14]
    14. Device according to one of the preceding claims, characterized in that the device is designed as a disperser for dispersing the pulp (1). For this 1 sheet drawings
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    CN208586455U|2019-03-08|
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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    JPH03279478A|1990-03-23|1991-12-10|Aikawa Tekko Kk|Pulper for papermaking|
    WO2003015924A1|2001-08-15|2003-02-27|Metso Paper, Inc.|Refining element|
    US20070158483A1|2006-01-09|2007-07-12|Andritz Inc.|Refiner stator plate having an outer row of teeth slanted to deflect pulp and method for pulpdeflection during refining|
    DE202009018666U1|2009-12-08|2012-11-07|Voith Patent Gmbh|Disperger IV|
    DE102011005273A1|2011-03-09|2012-09-13|Voith Patent Gmbh|disperser|
    DE202014010374U1|2014-05-16|2015-06-17|Voith Patent Gmbh|Apparatus for pulp treatment|
    US11208763B2|2018-10-29|2021-12-28|Andritz Inc.|Supported toothed plates in a disperser|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE102015212012.0A|DE102015212012B4|2015-06-29|2015-06-29|disperser|
    PCT/EP2016/064916|WO2017001359A1|2015-06-29|2016-06-28|Disperser|
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