公开(公告)号：EP2464783A1

公开(公告)日：2012-06-20

申请号：EP10718981.3

申请日：2010-05-10

申请人： Voith Patent GmbH

发明人： HÄUSSLER, Markus ,  LOSER, Hans ,  SCHMIDT-ROHR, Volker ,  RUF, Wolfgang ,  RUEHL, Thomas

IPC分类号： D21F1/02 ,  D21F9/00 ,  D21F9/02

CPC分类号： D21F11/00 ,  D21F1/02 ,  D21F1/026 ,  D21F1/028 ,  D21F9/003 ,  D21F9/02

摘要： The invention relates to a method for operating a sheet-forming unit (3) for a machine for producing fibrous material webs from at least one fibrous material suspension (FS), comprising a headbox (1) and a forming unit (2) arranged downstream of the headbox (1). In this method, the at least one fibrous material suspension (FS) is fed to the headbox (1) over the machine width, is conducted in a plurality of turbulence-generating channels (8; 8.1-8.n; 8.11-8.nn) to form sub-flows, and fed to a nozzle (9). From said nozzle, the at least one fibrous material suspension (FS) is applied or introduced in the form of a free jet (F) into the forming unit (2) to define a contact line (21), wherein within an individual turbulence-generating channel (8; 8.1-8.n; 8.11-8.nn) a pressure loss (∆p) is set in the fibrous material suspension. The method according to the invention is characterised in that in a final fluidisation region (15) of an individual turbulence-generating channel (8; 8.1-8.n; 8.11-8.nn) a pressure loss (∆p) of ≥ 50 mbar is generated within the fibrous material suspension (FS) before inlet (14) thereof into the nozzle (9), and the fibrous material suspension (FS) is guided from said final fluidisation region (15) as far as the contact line (21) in such a way that the dwell time (TV) of the suspension in the region defined by said final fluidisation region (15) as far as the contact line (21) ranges from > 30 ms to ≤ 300 ms.

公开(公告)号：EP2379801A1

公开(公告)日：2011-10-26

申请号：EP09740129.3

申请日：2009-10-22

申请人： Voith Patent GmbH

发明人： HÄUßLER, Markus ,  FENKL, Konstantin ,  RUF, Wolfgang ,  PRÖSSL, Jürgen ,  SCHWANER, Mathias

IPC分类号： D21F1/02

CPC分类号： D21F1/02 ,  D21F1/028 ,  D21F9/006

摘要： The invention relates to a sheet-forming system (1) for a machine for producing a multilayer fibrous material web (4), comprising a multilayer headbox (2) having a headbox nozzle (6), which has at least two nozzle chambers (8.1, 8.2) that are separated from one another by at least one separating wedge (7), and further comprising a gap former (3), which is connected directly downstream of the multilayer headbox (2) and has two continuous revolving screens (13, 14), the first screen (13) of which runs over a circumferential area (16) of a forming roll (15) and the second screen (14) of which runs over a circumferential area (18) of a breast roll (17) and then runs onto the first screen (13) in the area of the forming roll (15) to form a wedge-shaped material inlet gap (19). The sheet-forming system (1) according to the invention is characterized in that the separating wedge (7) has a separating wedge protrusion (Ü.7) in a range of 0.05 to 3.0 of the largest single gap width (s.10.1) of the at least two nozzle chambers (8.1, 8.2); the separating wedge (7) comprises two separating wedge areas (7.1, 7.2), each having one separating wedge angle (α, ß), an upstream separating wedge starting area (7.1) and a downstream separating wedge ending area (7 2); the two separating wedge angles (α, ß) of the two separating wedge areas (7.1, 7.2) assume different angle values, wherein the separating wedge starting angle (α) of the upstream separating wedge initial area (7.1) assumes a greater angle value than the separating wedge ending angle (ß) of the downstream separating wedge end area (7.2), and at least one separating wedge surface (7.0; 7.0, 7.U) of the separating wedge (7) is provided as a nonplanar transitional area (23.O; 23.O, 23.U) between the two separating wedge areas (7.1, 7.2) of the separating wedge (7); the fibrous material suspension free jet (20) formed from at least two fibrous material suspension streams (5.10, 5.20) has a free jet length (L.20) in the range of 100 to 500 mm, and the forming roll (15) has a diameter (D.15) in the range of 1,200 to 2,500 mm.

公开(公告)号：EP2379800A1

公开(公告)日：2011-10-26

申请号：EP09740126.9

申请日：2009-10-22

申请人： Voith Patent GmbH

发明人： RUF, Wolfgang ,  FENKL, Konstantin ,  HÄUßLER, Markus

IPC分类号： D21F1/02

CPC分类号： D21F1/02 ,  D21F1/022

摘要： The invention relates to a headbox (1) which comprises a feed device (4, 5.1; 4, 5.2) feeding the at least one fiber suspension (2), a perforated distribution pipe plate (6) arranged immediately downstream thereof and having a plurality of channels (7) arranged in lines (Z) and columns (S), an intermediate channel (8) arranged downstream thereof, extending over the width (B) of the headbox (1) and having a plurality of means (9, 9.1) for dosing a fluid (10) in partial fluid streams (10.T) to the at least one fiber suspension (2) in a preferably adjustable/controlled manner, the means being spaced apart from each other in the width direction of the headbox (1) and the individual means (9; 9.1) comprising a plurality of dosing channels (11) having respective dosing channel openings (11.O) and an opening center line (11.M), arriving at different levels and being connected to a common supply channel (12). The headbox further comprises a downstream turbulence generator (13) having a plurality of flow channels (14) arranged in lines (Z) and columns (S) and a headbox nozzle (16) which is directly contiguous to the turbulence generator (13) and which has a nozzle gap (17). The headbox (1) according to the invention has a system pressure loss which is substantially composed of a first pressure loss (Δp1) between the feed device (4, 5.1; 4, 5.2) and the intermediate channel (8) and a second pressure loss (Δp2) in the turbulence generator (13), the second pressure loss (Δp2) and the first pressure loss (Δp1) being in a ratio ranging from 8:1 to 1:1, preferably from 4:1 to 1:1, particularly from 2:1 to 1:1.

公开(公告)号：EP2531647B1

公开(公告)日：2014-09-03

申请号：EP11702210.3

申请日：2011-02-04

申请人： Voith Patent GmbH

发明人： LOSER, Hans ,  HAEUSSLER, Markus ,  RUF, Wolfgang

IPC分类号： D21F1/02

CPC分类号： D21F1/02 ,  D21F1/026 ,  D21F1/028

公开(公告)号：EP2531648A1

公开(公告)日：2012-12-12

申请号：EP11702216.0

申请日：2011-02-04

申请人： Voith Patent GmbH

发明人： LOSER, Hans ,  HAEUSSLER, Markus ,  RUF, Wolfgang

IPC分类号： D21F1/02

CPC分类号： D21F1/02 ,  D21F1/026

摘要： The invention relates to a headbox (1) comprising at least one feeding device (5) feeding at least one fibrous material suspension (FS), a nozzle (4) having an outlet gap (11) for dispensing the fibrous material suspension (FS) in a free jet (F) and a turbulence-generating device (6) arranged directly upstream of the nozzle (4) in the flow direction. During operation of the headbox (1), the at least one fibrous material suspension (FS) is guided in partial flows through a plurality of turbulence-generating channels (7, 7.xy, 7.11 -7.4n), at least one region forming a fluidization region (12, 12.11 -12.31) being provided inside each individual turbulence-generating channel (7, 7.xy, 7.11 -7.4n). The headbox (1) according to the invention is characterized in that the total volume (V
TE ) of an individual turbulence-generating channel (7, 7.xy, 7.11 -7.4n), depending on the effective volume (V
F ) downstream of the fluidization region (12, 12.11 – 12.31) which is last in the direction of flow inside an individual turbulence-generating channel (7, 7.xy, 7.11 -7.4n) up to the outlet (6A) from the turbulence-generating device (6) is: V
TE = k2•V
F , wherein V
TE is the total volume of an individual turbulence-generating channel (7, 7.xy, 7.11 -7.4n), k2 is a constant, with 1 ≤ k2 ≤ 1,5; and V
F is the effective volume of the turbulence-generating device (6) downstream of the fluidization region (12, 12.11 – 12.31).

公开(公告)号：EP2531647A1

公开(公告)日：2012-12-12

申请号：EP11702210.3

申请日：2011-02-04

申请人： Voith Patent GmbH

发明人： LOSER, Hans ,  HAEUSSLER, Markus ,  RUF, Wolfgang

IPC分类号： D21F1/02

CPC分类号： D21F1/02 ,  D21F1/026 ,  D21F1/028

摘要： The invention relates to a headbox (1) comprising at least one feeding device (5) feeding at least one fibrous material suspension (FS), a nozzle (4) having an outlet gap (11) for dispensing the fibrous material suspension (FS) in a free jet to a downstream functional unit of a shaping unit (2) downstream of the headbox (1) and a turbulence-generating device (6) arranged directly upstream of the nozzle (4) in the flow direction. The headbox further comprises a plurality of turbulence-generating channels (7, 7.xy, 7.11 – 7.4n) having at least one fluidization region each for guiding the fibrous material suspension (FS) in partial flows and supplying the nozzle (4), the individual channels (7, 7.xy, 7.11 -7.4n) being arranged in parallel to each other, forming rows (R1-Rx, R1-R4), in the transversal direction of the turbulence-generating device (6), and the rows (R1-Rx, R1-R4) being arranged next or on top of each other at a right angle to the transversal direction. The headbox (1) according to the invention is characterized in that the portion of a row (R1-Rx, R1-R4) of turbulence-generating channels (7, 7.xy, 7.11 -7.4n) supplying the nozzle (4) across a predefined unit of length at a right angle to the direction of throughflow forms a hydraulic unit (E
H ) and in that the nozzle (4) and the turbulence-generating device (6) are designed such that the volume which is referred to as volume (V
hydr.unit ) of the hydraulic unit and which is supplied by an individual hydraulic unit (E
H ) has a discharge width ≤0.005 m
3 / m.

摘要翻译： 流浆箱技术领域本发明涉及流浆箱（1），其包括至少一个供给至少一种纤维材料悬浮液（FS）的供给装置（5），具有用于分配纤维材料悬浮液（FS）的出口间隙（11）的喷嘴（4） 以自由喷流流向流浆箱（1）下游的成形单元（2）的下游功能单元和在流动方向上直接布置在喷嘴（4）上游的湍流产生装置（6）。 流浆箱还包括多个湍流产生通道（7，7.xy，7.11 - 7.4n）具有至少一个流化区中的每个用于引导在分流纤维材料悬浮液（FS）和供给喷嘴（4）， 各个通道（7，7.xy，7.11 -7.4n）被布置在相互平行的，形成行（R1-R x，R1-R4），在湍流产生装置（6）的横向方向，并 行（R1-Rx，R1-R4）以与横向成直角的方式彼此相邻布置或在彼此的顶部布置。 根据本发明的流浆箱（1）的特征在于，供应喷嘴（4）的湍流产生通道（7,7xy，7.11-7.4n）的一排（R1-Rx，R1-R4） 跨越以直角到通流的构成的液压单元（EH）的方向上的长度的预定单元，并且所述喷嘴（4）和湍流产生装置（6）被设计成使得其被称为卷 由液压单元（EH）提供的液压单元的容积（V液压单元）的排放宽度≤0.005m 3 / m。

公开(公告)号：EP2531646A1

公开(公告)日：2012-12-12

申请号：EP11702209.5

申请日：2011-02-04

申请人： Voith Patent GmbH

发明人： LOSER, Hans ,  HAEUSSLER, Markus ,  RUF, Wolfgang

IPC分类号： D21F1/02

CPC分类号： D21F1/02 ,  D21F1/026

摘要： The invention relates to a headbox (1) comprising at least one feeding device (5) feeding the at least one fibrous material suspension (FS), a nozzle (4) having an outlet gap (11) for dispensing the fibrous material suspension (FS) in a free jet (F) and a turbulence-generating device (6) arranged directly upstream of the nozzle (4) in the flow direction. During operation of the headbox (1), the at least one fibrous material suspension (FS) is guided in partial flows through a plurality of turbulence-generating channels (7, 7.xy, 7.11 -7.4n), at least one region forming a fluidization region (12, 12.11 -12.31) being provided inside each individual turbulence-generating channel (7, 7.xy, 7.11 -7.4n). The headbox (1) according to the invention is characterized in that the turbulence-generating device (6) is designed such that the effective volume (V
F ) downstream of the fluidization region (12, 12.11 -12.31) which is last in the direction of flow inside an individual turbulence-generating channel (7, 7.xy, 7.11 -7.4n) up to the outlet (6A) from the turbulence-generating device (6) is a function of the open cross-sectional area (B
To ) of the individual turbulence-generating channel (7, 7.xy, 7.11 -7.4n) at the outlet (6A) of the turbulence-generating device (6): formula (I), wherein V
f is the effective volume of the turbulence-generating device (6) downstream of the last fluidization region (12, 12.11-12.31); k1 is a constant, with 1 ≤ k1 ≤ 10, preferably 3 ≤ k1 ≤ 7; and B
To is the open cross-sectional area of the turbulence-generating channel (7, 7.xy, 7.11 -7.4n) at the outlet (6A) of the turbulence-generating device (6).

摘要翻译： 本发明涉及包括至少一个供给至少一个纤维材料悬浮液（FS）的供给装置（5）的流浆箱（1），具有用于分配纤维材料悬浮液（FS）的出口间隙（11）的喷嘴（4） ）在自由射流（F）和直接布置在喷嘴（4）上游的流动方向上的湍流产生装置（6）中。 在流浆箱（1）运行期间，至少一个纤维材料悬浮液（FS）在部分流动中被引导通过多个湍流生成通道（7,7xy，7.11-7.4n），至少一个区域形成 在每个单独的湍流生成通道（7,7xy，7.11-7.4n）内提供流化区域（12,12.11 -12.31）。 根据本发明的流浆箱（1）的特征在于，湍流产生装置（6）被设计成使得流化区域（12,12.11-12.31）下游的有效容积（VF）沿着 在单独的湍流产生通道（7,7.x，7.11-7.4n）内从湍流产生装置（6）一直流到出口（6A）是开放横截面积（B To）的函数， （6）的出口（6A）处的单个湍流生成通道（7,7.x，7.11-7.4n）的公式（I），其中V f是紊流的有效体积 - 在最后流化区域（12,12.11-12.31）下游的发生装置（6）; k1是常数，1≤k1≤10，优选3≤k1≤7; B To是在湍流产生装置（6）的出口（6A）处的湍流产生通道（7,7.x，7.11-7.4n）的开放横截面积。

公开(公告)号：EP2531645A1

公开(公告)日：2012-12-12

申请号：EP10794963.8

申请日：2010-12-15

申请人： Voith Patent GmbH

发明人： RUF, Wolfgang ,  FENKL, Konstantin ,  HÄUSSLER, Markus

IPC分类号： D21F1/02

CPC分类号： D21F1/02 ,  D21F1/022

摘要： The invention relates to a headbox (1) for a machine for producing a fibrous material web (3) from a fibrous material suspension (2), comprising a feed device (4, 5) which supplies the fibrous material suspension (2), a perforated distribution pipe plate (6) connected downstream, an intermediate conduit (8) located downstream thereof and having a plurality of means (9, 9.1) spaced apart from one another in the width direction of the headbox (1) for metering a fluid (10) in partial fluid streams (10. T) into the fibrous material suspension (2), wherein the intermediate conduit (8) includes two compensation regions (C.1, C.2) in which a compensating flow is possible transversely to the flow direction (R) and over the width (B) of the intermediate conduit (8), a sectional region (D) in which the means (9, 9.1) for metering fluid (10) are disposed in order also to section the flow transversely over the width (B) of the intermediate conduit (8), a turbulence generating means (11) disposed downstream, and a headbox nozzle (14) immediately adjoining the turbulence generating means (11). The headbox (1) according to the invention is characterised in that the overall compensation length (C. L) formed from the two compensation regions (C.1, C.2) and measured in the flow direction (R) has a value in the range of 30 to 1500 mm, preferably from 100 to 500 mm, in particular from 150 to 300 mm.

摘要翻译： 本发明涉及一种用于由纤维材料悬浮液（2）生产纤维材料纤维网（3）的机器的流浆箱（1），其包括供应纤维材料悬浮液（2）的供给装置（4,5）， 连接在下游的多孔分配管板（6），位于其下游的中间管道（8），并具有在流浆箱（1）的宽度方向上彼此间隔开的多个装置（9,9.1），用于计量流体 （8）包括两个补偿区域（C.1，C.2），其中补偿流可横向于所述纤维材料悬浮体（10）中的所述补偿区域 （10）的流动方向（R）和整个宽度（B）之间，在其中设置用于计量流体（10）的装置（9,9.1）的截面区域（D） 在中间导管（8）的宽度（B）上横向地设置湍流发生装置（11），d 自流，以及紧邻湍流产生装置（11）的流浆箱喷嘴（14）。 根据本发明的流浆箱（1）的特征在于，由两个补偿区域（C.1，C.2）形成并且在流动方向（R）上测量的总补偿长度（C L）具有 30至1500mm，优选100至500mm，特别是150至300mm的范围。

公开(公告)号：EP2464784A1

公开(公告)日：2012-06-20

申请号：EP10724335.4

申请日：2010-05-10

申请人： Voith Patent GmbH

发明人： LOSER, Hans ,  HÄUSSLER, Markus ,  SCHMIDT-ROHR, Volker ,  RUF, Wolfgang

IPC分类号： D21F1/02 ,  D21F9/00 ,  D21F9/02

CPC分类号： D21F1/02 ,  D21F1/026 ,  D21F1/028 ,  D21F9/003 ,  D21F9/02

摘要： The invention relates to a headbox (1) for a machine for producing fibrous material webs from at least one fibrous material suspension (FS), comprising at least one feed device (4) feeding the at least one fibrous material suspension (FS), a nozzle (9) having an outlet gap (12) for dispensing the fibrous material suspension (FS) in a free jet (F), and a turbulence-generating device (7) arranged directly upstream of the nozzle (9) in the flow direction. During operation of the headbox (1), the at least one fibrous material suspension (FS) is guided in the turbulence-generating device in sub-flows through a plurality of turbulence-generating channels (8; 8.1-8.n; 8.11-8.nn). Within the individual turbulence-generating channel (8; 8.1-8.n; 8.11-8.nn) of the turbulence-generating device (7), at least one region forming a fluidisation region (15) is provided, in which a pressure loss (∆p) can be generated in the sub-flow of the fibrous material suspension (FS) guided through said region. The headbox (1) according to the invention is characterised in that the nozzle (9) and the turbulence-generating device (7) arranged directly upstream of the nozzle (9) are designed and dimensioned such that they are suitable for setting a dwell time (TV) of ≤ 200 ms of the fibrous material suspension (FS) flowing through the same from a final fluidisation region (15) of an individual turbulence-generating channel (8; 8.1-8.n; 8.11-8.nn) of the turbulence-generating device (7) before inlet (14) into the nozzle (9) as far as the outlet gap (12) of the nozzle (9), and a pressure loss (∆p) of ≥ 50 mbar in the final fluidisation region (15) upstream of the inlet (14) into the nozzle (9).

公开(公告)号：EP2446083A2

公开(公告)日：2012-05-02

申请号：EP10718128.1

申请日：2010-04-26

申请人： Voith Patent GmbH

发明人： RUF, Wolfgang ,  HÄUSSLER, Markus ,  SCHLEGEL, Stefan ,  HAESSNER, Jens

IPC分类号： D21F1/02

CPC分类号： D21F1/02 ,  D21F1/028

摘要： The invention relates to a headbox (1) for a machine for producing a fiber web (2), particularly a paper, cardboard, or tissue web, from at least one fibrous suspension (3), having a headbox nozzle (8) comprising an upper nozzle wall (4) and a lower nozzle wall (5) and two side walls (6), said headbox being tapered to form an outlet (9), and having an inner chamber (7), through which the fibrous suspension (3) flows in a flow direction (S) during the operation of the headbox (1). On the upper nozzle wall (4) of the headbox nozzle (8), a baffle (11) is arranged on the outlet side, which is slidable by way of several elements (10), and which extends across the machine width (B). Said baffle is provided with a baffle protrusion (A) and a baffle immersion depth (T), and has at least two surfaces touched by a fibrous suspension (3), an upstream stopping surface (12), and a subsequent main surface (13) during operation of the headbox (1). The headbox (1) according to the invention is characterized in that, between the stopping surface (12) of the baffle (11) and the main surface (13) of the baffle (11), at least one refraction surface (17) touched by the fibrous suspension (3) during the operation of the headbox (1) is provided on the baffle (11).

摘要翻译： 本发明涉及一种用于从至少一个纤维悬浮液（3）生产纤维幅材（2），特别是纸张，纸板或薄纸幅的机器的流浆箱（1），其具有流浆箱喷嘴（8） 上喷嘴壁（4）和下喷嘴壁（5）以及两个侧壁（6），所述流浆箱成锥形以形成出口（9），并具有内室（7），纤维悬浮液 ）在流浆箱（1）的操作期间沿流动方向（S）流动。 在流浆箱喷嘴（8）的上部喷嘴壁（4）上，出口侧上设置有挡板（11），挡板（11）可通过多个元件（10）滑动并穿过机器宽度（B） 。 所述挡板设置有挡板突起（A）和挡板浸入深度（T），并且具有由纤维悬浮体（3），上游止动表面（12）和随后的主表面（13）接触的至少两个表面 ）在流浆箱（1）的操作期间。 根据本发明的流浆箱（1）的特征在于，在挡板（11）的止动表面（12）和挡板（11）的主表面（13）之间，触及至少一个折射表面（17） 在流浆箱（1）运行期间由纤维悬浮液（3）提供在挡板（11）上。