公开(公告)号：EP0232604B1

公开(公告)日：1990-03-21

申请号：EP86309537.8

申请日：1986-12-08

申请人： VALMET-AHLSTROM INC.

发明人： Evälahti, Osmo

IPC分类号： D21F1/02

CPC分类号： D21F1/06 ,  D21F1/02 ,  D21F1/026

公开(公告)号：EP0335343A2

公开(公告)日：1989-10-04

申请号：EP89105478.5

申请日：1989-03-28

申请人： VALMET-AHLSTROM INC.

发明人： Mäkelä, Olavi

IPC分类号： D21F1/06

CPC分类号： D21F1/065

摘要： The invention relates to a method of active attenuation of pressure pulsation in the stock fed into the headbox (10) of a paper or board machine in such a way that the pressure pulsations in the stock are measured and the water flow to be fed into the stock is controlled on the basis of the results of the measurement. The volume available for the stock flow is controlled by means of water flow changes. Pressure variations achieved by volume variations are arranged substantially in opposition in relation to the pressure variations to be attenuated thus attenuating the pressure variations in the stock. The invention also relates to an apparatus for carrying out the above method. The apparatus comprises a sensor (6) or a set of sensors, on the basis of whose output signal/signals a regulator (7) has been arranged to automatically control the water flow to be fed into the stock by an adequately fast valve arrangement (1) moved by the controlling element (2) of the regulator (7).

摘要翻译： 本发明涉及一种主动衰减供给到纸或纸机的流浆箱（10）中的压力脉动的方法，使得测量原料中的压力脉动并将待进料的水流 股票是根据测量结果进行控制的。 可用于库存流量的流量由水流量变化控制。 通过体积变化实现的压力变化相对于要衰减的压力变化基本相对地布置，从而衰减了原料中的压力变化。 本发明还涉及一种用于执行上述方法的装置。 该装置包括传感器（6）或一组传感器，其基于其输出信号/信号调节器（7）已被布置成通过适当快速的阀装置自动控制供给到料中的水流（ 1）由调节器（7）的控制元件（2）移动。

公开(公告)号：EP0306759A1

公开(公告)日：1989-03-15

申请号：EP88113618.8

申请日：1988-08-22

申请人： VALMET-AHLSTROM INC.

发明人： Nyman, Tapani

IPC分类号： D21F9/00 ,  D21F1/48 ,  D21F1/38

CPC分类号： D21F1/48 ,  D21F1/38 ,  D21F9/003

摘要： A means for controlling wires in a twin-wire section in a paper or cardboard machine where the wires run one over the other for dewatering stock that is present between the wires, where a dewatering box is provided on one side of the wires and where a number of strips disposed side by side are provided on the other side of the wires, said strips running across the transport direction of the wires and over the total width of the wires, and where the strips have been arranged to be pressed against the wire lying closest to the strips, with the aid of pressure elements, where said pressure elements are disposed to act between the strips and a supporting table or equivalent, said supporting table being fixedly mounted relative to said dewatering box. The invention is characterized in that for each strip (16) has been provided a separate pressure element (15), where every one of the pressure elements (15) comprises at least two force-supplying members (19,20) provided between the respective strip and the supporting table (13), said members (19,20) being disposed to displace the strip (16) in the direction toward and away from said dewatering box , that a first one (19) of the members has been disposed to act against the forward end (25) of the strip in the transport direction of the wires and that a second one (20) of the members has been disposed to act against the rear end (28) of the strip in said transport direction, and that the force-­supplying members (19,20) are individually controllable so that on one hand the pressure of the strip (16) against the wire and on the other hand the angle of the top surface of the strip against the wire can be adjusted.

摘要翻译： 一种用于在纸或纸板机中的双线部分中控制电线的装置，其中电线彼此一个移动以脱水存在于电线之间的存货，其中在电线的一侧设置脱水箱，并且其中 并排布置的条带数量设置在电线的另一侧，所述条带横贯导线的输送方向延伸，并超过电线的总宽度，并且条带已被布置为压靠在电线上 最靠近条带，借助于压力元件，其中所述压力元件设置成在条带和支撑台或等同物之间作用，所述支撑台相对于所述脱水箱固定地安装。 本发明的特征在于，对于每个条带（16）已经设置有单独的压力元件（15），其中每个压力元件（15）包括至少两个力供给构件（19,20），其设置在相应的 条带和支撑台（13），所述构件（19,20）设置成沿着朝向和离开所述脱水箱的方向移位所述条带（16），所述构件中的第一个（19）已经被布置成 在导线的输送方向上抵靠带的前端（25），并且已经将第二个（20）的构件设置成沿着输送方向作用在带的后端（28）上，并且 力供给构件（19,20）是可单独控制的，使得一方面钢带（16）抵抗钢丝的压力，另一方面可以调整钢带的顶面与钢丝的角度 。

公开(公告)号：EP0232604A1

公开(公告)日：1987-08-19

申请号：EP86309537.8

申请日：1986-12-08

申请人： VALMET-AHLSTROM INC.

发明人： Evälahti, Osmo

IPC分类号： D21F1/02

CPC分类号： D21F1/06 ,  D21F1/02 ,  D21F1/026

摘要： A paper machine head box includes perforated plates (2, 5) being used as a distributor and a turbulence generator and having flow ducts (3, 6), of which the ducts or channels at the edges are of different size than the remaining flow ducts. According to a preferred embodiment, slides (11), which are adjustably displaceable sideways, are provided at the ends of slice ducts at both edges of the perforated plates in order to enable the flow to be regulated. The slides and the perforated plates define the outermost flow ducts (16) of the turbulence generator and the distributor.

公开(公告)号：EP0306759B1

公开(公告)日：1991-08-07

申请号：EP88113618.8

申请日：1988-08-22

申请人： VALMET-AHLSTROM INC.

发明人： Nyman, Tapani

IPC分类号： D21F9/00 ,  D21F1/48 ,  D21F1/38

CPC分类号： D21F1/48 ,  D21F1/38 ,  D21F9/003

公开(公告)号：EP0329135A1

公开(公告)日：1989-08-23

申请号：EP89102680.9

申请日：1989-02-16

申请人： VALMET-AHLSTROM INC.

发明人： Vitikainen, Hannu ,  Järvinen, Pekka ,  Hepolehto, Hannu

IPC分类号： D21F3/08 ,  B23P11/02

CPC分类号： D21F3/08 ,  B23P11/025

摘要： The invention relates to a method for lining a roll or the like, particularly a press roll of a paper or pulp machine, where a metal shell, prestressed to a controlled degree, is fitted round and against a metal body. The length of a shell plate (3) is dimensioned depending on the diameter of a roll body (1) in the way that a gap (5) will be left in the longitudinal joint (4) of a shell (2) at the initial stage of the lining. When the shell plate (3) is being heated by a heating element (6), thermal expansion of the shell plate occurs while at the same time it is tightened in such a way that the gap (5) is diminished. After this the longitudinal joint (4) is welded. Finally the shell plate (3) is allowed to cool down, whereby it contracts and tightens to the desired tightness round and against the roll body (1).

摘要翻译： 本发明涉及用于加衬的辊或类似的，特别是按纸或纸浆机，其中，一个金属外壳，预应力到受控的程度，被装配圆和一对金属体的辊的方法。 壳板（3）的长度的尺寸依赖于滚动体的直径（1）中那样的间隙（5）将被在一个外壳（2）的纵向接头（4）在初始离开的方式 衬里的阶段。 当壳板（3）是由一个加热元件（6），所述壳板的热膨胀被加热的发生，而在它的Sametime在寻求一种方式被拧紧做（5）被减小的间隙。 在此之后，纵向接头（4）被焊接。 最后，壳板（3）被允许冷却，从而它收缩并收紧到所需的密封性轮和对着辊体（1）。

公开(公告)号：EP0319894A2

公开(公告)日：1989-06-14

申请号：EP88120294.9

申请日：1988-12-05

申请人： VALMET-AHLSTROM INC.

发明人： Kurki, Jarmo

IPC分类号： B26D7/26

CPC分类号： B26D7/2628 ,  Y10T83/04 ,  Y10T83/148 ,  Y10T83/4847 ,  Y10T83/7863

摘要： The invention is related to a method for adjusting the knife clearance in sheet cutters. In a sheet cutter, the web material is cut by means of a cutter drum (1) rotated by drive means (4) and provided with cutting knives. and a counter knife (5) disposed in a knife support (6) and positioned at knife clearance distance from the moving cutting knives. In the method according to the invention, the cutting forces acting on the cutting knives of the sheet cutters, or their effect on the structure of the sheet cutter during its operation, are measured, and the information from the measurement is used as a command variable for the knife clearance. The command variable can be determined in several different ways, and according to one embodiment of the invention, it is determined by measuring the vibration level of the structure of the sheet cutter due to the cutting forces. The invention is also related to an apparatus for carrying out the method.

摘要翻译： 本发明涉及一种用于调整刀片间隙的方法。 在片材切割机中，通过由驱动装置（4）旋转并设有切割刀的切割器滚筒（1）来切割网状材料。 以及设置在刀支撑件（6）中并且与所述移动的切割刀相距刀具间隙定位的对刀（5）。 在根据本发明的方法中，测量作用在切割刀的切割刀上的切割力或其在操作期间对切纸器的结构的影响，并且将来自测量的信息用作命令变量 为刀间隙。 命令变量可以以几种不同的方式确定，并且根据本发明的一个实施例，通过由于切割力测量切纸器的结构的振动水平来确定。 本发明还涉及一种用于执行该方法的装置。

公开(公告)号：EP0211840B1

公开(公告)日：1989-02-22

申请号：EP85902042.2

申请日：1985-05-02

申请人： VALMET-AHLSTROM INC.

发明人： LAITINEN, Sakari ,  WARIS, Tapio

IPC分类号： D21H1/02 ,  D21F11/04

CPC分类号： D21F11/04

摘要： A method for manufacturing multilayer board in which the pulp suspension forming a surface layer (12) is fed onto the horizontal section of a first, inner wire (1). The pulp suspension forming an intermediate layer (11) is supplied onto said web layer, which is already formed, in or in front of a tapering gap (6) constituted by the first wire and a second, outer wire (4). Both of the wires and the web layers (11, 12) between them are guided over a curved surface (3). After this the first wire and both of the web layers are guided against a third wire (8) onto the horizontal section of which the pulp suspension forming the other surface layer (13) is supplied. The consistency of the pulp suspension forming the intermediate layer (11) is remarkably higher than that of the pulp suspensions forming the surface layers (12, 13).

公开(公告)号：EP0298993A1

公开(公告)日：1989-01-18

申请号：EP87903322.0

申请日：1987-05-12

申请人： VALMET-AHLSTROM INC.

发明人： KOIVISTO, Lasse ,  LAITINEN, Heikki

IPC分类号： D21F1

CPC分类号： D21F1/026 ,  D21F1/02

摘要： Générateur de turbulence pour la boîte de tête d'une machine à papier, dont la qualité de la surface des conduites d'écoulement a été améliorée et dont la technique de fabrication est simple. Le générateur de turbulence décrit se caractérise par le fait que le corps des poutrelles ajourées (6a, 6b) et le matériau de revêtement des surfaces frontales ainsi que les conduites d'écoulement sont liés les uns aux autres de façon étroite et étanche et par le fait que les matériaux de revêtement des conduites d'écoulement (7) sont résistants à l'usure à la fois physiquement et chimiquement.

公开(公告)号：EP0329135B1

公开(公告)日：1992-05-06

申请号：EP89102680.9

申请日：1989-02-16

申请人： VALMET-AHLSTROM INC.

发明人： Vitikainen, Hannu ,  Järvinen, Pekka ,  Hepolehto, Hannu

IPC分类号： D21F3/08 ,  B23P11/02

CPC分类号： D21F3/08 ,  B23P11/025