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1. 发明授权

US5575395A Method and apparatus for screening fibrous suspensions 失效
标题翻译：筛选纤维悬浮液的方法和装置
公开(公告)号：US5575395A
公开(公告)日：1996-11-19
申请号：US275343
申请日：1994-07-15
申请人： Timo Alajaaski , Kaj Henricson , Kalevi Laakso , Antero Laine , Risto Ljokkoi , Olavi Pikka , Markku Simola , Pertti Wathen
发明人： Timo Alajaaski , Kaj Henricson , Kalevi Laakso , Antero Laine , Risto Ljokkoi , Olavi Pikka , Markku Simola , Pertti Wathen
IPC分类号： D21D5/00 , D21D5/02 , B03B7/00
CPC分类号： D21D5/026 , D21D5/00
摘要： A fiber suspension, such as an in a pulp mill, is treated in an manner which minimizes both the investment and the operating costs associated with a screening plant. A single pump has an outlet connected to a knotter and primary and secondary screening states so that the pump provides substantially the sole motive force to the pulp moving it through the knotter and screening stages. The knotter and screening stages are provided in a common housing with the knotter vertically above the screening stages, and the screening stages one above the other. A single motor may be provided to rotate rotatable elements associated with the knotter and screening stages. The knotter may be connected to a knot washer external of the housing by a valved conduit less than two meters in length, and the secondary screening stage can be connected to a tertiary screening stage exterior of the housing by a valved conduit less than two meters long. Rejects from the knot washer and secondary screening stage may be recycled to the pulp inlet, and dilution water may be introduced where necessary.
摘要翻译：纤维悬浮液，例如在纸浆厂中，以最小化与筛选设备相关的投资和操作成本的方式进行处理。单个泵具有连接到打结器和主要和次要筛选状态的出口，使得泵基本上为通过打结器和筛选阶段将纸浆移动的纸浆提供唯一的动力。打结器和筛选阶段提供在公共壳体中，打结器垂直地位于筛选阶段上方，筛选阶段一个在另一个之上。可以提供单个电动机以旋转与打结器和筛选阶段相关联的可旋转元件。打结器可以通过长度不超过两米的阀门导管连接到外壳外部的结垫圈，并且二次筛分阶段可以通过小于两米长的阀门导管连接到壳体外部的三级筛分台。结节垫和二次筛分阶段的拒绝可以再循环到纸浆入口，并且必要时可以引入稀释水。

2. 发明授权

US5547083A Apparatus for treating fiber suspension 失效
标题翻译：纤维悬浮液处理装置
公开(公告)号：US5547083A
公开(公告)日：1996-08-20
申请号：US318719
申请日：1994-10-13
申请人： Timo Alajaaski , Kalevi Laakso , Antero Laine , Risto Ljokkoi
发明人： Timo Alajaaski , Kalevi Laakso , Antero Laine , Risto Ljokkoi
IPC分类号： B01D29/25 , B01D29/11 , B01D33/06 , B01D36/04 , B07B1/20 , B07B1/24 , D21D5/02 , D21D5/06 , D21D5/16 , B07B1/04
CPC分类号： D21D5/026 , B01D29/118 , B01D36/045
摘要： An apparatus for screening and thickening cellulose pulp keeps cleaner than conventional apparatus. Pulse members in accordance with the prior art are constructed so that when the capacity of the screening apparatus is increased, for example by using greater pressure differences or the cleanliness of the accept is increased by decreasing the size of the perforations or slots, a situation is created in which the screen cylinder tends to clog. The pulse member of the present screening apparatus subjects the screen cylinder or screen surface to a pulse cleaning action so that there is a minimal possibility to allow the pressure effect to "escape" past the area being cleaned. The higher the consistency of the fiber matting is or the worse the screen surface is clogged, the stronger the pulse cleaning of the screen surface.
摘要翻译： PCT No.PCT / FI93 / 00151 Sec。 371日期：1994年10月13日 102（e）日期1994年10月13日PCT提交1993年4月8日PCT公布。公开号WO93 / 22494 日期1993年11月11日用于筛选和增稠纤维素浆的设备比常规设备更干净。根据现有技术的脉冲构件被构造成使得当筛分装置的容量增加时，例如通过使用更大的压力差或通过减小穿孔或槽的尺寸来增加接受的清洁度，情况是造成屏幕滚筒倾向于堵塞。本筛选装置的脉冲构件使筛筒或筛面受到脉冲清洁作用，使得存在允许压力效应“逸出”超过待清洁区域的最小可能性。纤维消光的一致性越高，屏幕表面堵塞越严重，屏幕表面的脉冲清洁就越强烈。

3. 发明授权

US07229527B2 Method for the controlled thickening of low consistency fiber suspensions 有权
标题翻译：低浓度纤维悬浮液受控增稠的方法
公开(公告)号：US07229527B2
公开(公告)日：2007-06-12
申请号：US10689665
申请日：2003-10-22
申请人： Antero Laine , Risto Ljokkoi , Olavi Pikka , Sami Siik , Harri Qvintus
发明人： Antero Laine , Risto Ljokkoi , Olavi Pikka , Sami Siik , Harri Qvintus
IPC分类号： D21C9/18
CPC分类号： D21C9/18 , D21F1/66
摘要： The present invention relates to the thickening of pulp suspensions. A low consistency pulp suspension is fed to a pre-thickener (10) through an inlet conduit (18). A layer of thickened pulp, formed on a filter surface (22), is pushed along the filter surface by a cleaning member to the discharge end of the pre-thickener and is discharged through the outlet (20). The cleaning member comprises a rotating shaft (30), on which shaft at least one screw thread (32) is fixed so as to leave a free space between the shaft and the screw thread. Essentially non-thickened pulp is allowed to flow through the apparatus via this space.
摘要翻译：本发明涉及纸浆悬浮液的增稠。低浓度纸浆悬浮液通过入口管道（18）进料到预增稠剂（10）。形成在过滤器表面（22）上的增厚纸浆层通过清洁部件沿着过滤器表面推动到预增稠剂的排出端并通过出口（20）排出。清洁构件包括旋转轴（30），固定有至少一个螺纹（32）的轴，以在轴和螺纹之间留出自由空间。本质上不增稠的纸浆通过该空间流经设备。

4. 发明授权

US06767432B1 Apparatus for the thickening of fiber suspensions 有权
标题翻译：纤维悬浮液增稠装置
公开(公告)号：US06767432B1
公开(公告)日：2004-07-27
申请号：US09787629
申请日：2001-03-21
申请人： Antero Laine , Risto Ljokkoi , Olavi Pikka , Sami Siik , Harri Qvintus
发明人： Antero Laine , Risto Ljokkoi , Olavi Pikka , Sami Siik , Harri Qvintus
IPC分类号： D21C306
CPC分类号： D21C9/18 , D21F1/66
摘要： The present invention relates to the thickening of pulp suspensions. A low consistency pulp suspension is fed to a pre-thickener (10) through an inlet conduit (18). A layer of thickened pulp, formed on a filter surface (22), is pushed along the filter surface by a cleaning member to the discharge end of the pre-thickener and is discharged through the outlet (20). The cleaning member comprises a rotating shaft (30) on which shaft at least one screw thread (32) is fixed so as to leave a free space between the shaft and the screw thread. Essentially non-thickened pulp is allowed to flow through the apparatus via this space.
摘要翻译：本发明涉及纸浆悬浮液的增稠。低浓度纸浆悬浮液通过入口管道（18）进料到预增稠剂（10）。形成在过滤器表面（22）上的增厚纸浆层通过清洁部件沿着过滤器表面推动到预增稠剂的排出端并通过出口（20）排出。清洁构件包括旋转轴（30），轴上固定有至少一个螺纹（32），以便在轴和螺纹之间留下自由空间。本质上不增稠的纸浆通过该空间流经设备。

5. 发明授权

US6119867A Screen cylinder 失效
标题翻译：筛筒
公开(公告)号：US6119867A
公开(公告)日：2000-09-19
申请号：US77632
申请日：1998-05-28
申请人： Risto Ljokkoi , Pertti Wathen
发明人： Risto Ljokkoi , Pertti Wathen
IPC分类号： B07B1/00 , B01D29/25 , B01D29/44 , D21D5/16 , B07B1/04 , B01D1/20 , B01D21/26 , B01D1/49
CPC分类号： D21D5/16 , B01D29/445 , B01D2201/184
摘要： The present invention relates to a screen cylinder for screening fiber suspensions of the wood processing industry. The screen cylinder comprises a rotationally symmetric screen surface located on the side of the pulp to be screened, and support rings supporting the screen surface on the opposite side; the screen surface mainly comprising grooves and screen apertures in connection with the grooves, the grooves being comprised of a side surface on the upstream side, a bottom surface, and a side surface on the downstream side, characterized in that the bottom surface of the groove rises towards the side surface of the upstream side.
摘要翻译： PCT No.PCT / FI96 / 00638 Sec。 371日期：1998年5月28日 102（e）日期1998年5月28日PCT提交1996年11月27日PCT公布。 WO97 / 20103 PCT出版物日期：1997年6月5日本发明涉及一种用于筛选木材加工业的纤维悬浮液的筛筒。筛筒包括位于待筛选纸浆一侧的旋转对称筛面，以及在相对侧支撑筛网表面的支撑环; 所述屏幕表面主要包括与所述凹槽连接的凹槽和筛孔，所述凹槽由上游侧的侧表面，底表面和下游侧的侧表面组成，其特征在于，所述凹槽的底表面朝向上游侧的侧表面上升。

6. 发明授权

US5224603A Apparatus for treating fiber suspension 失效
标题翻译：纤维悬浮液处理装置
公开(公告)号：US5224603A
公开(公告)日：1993-07-06
申请号：US825196
申请日：1992-01-24
申请人： Karim Hanana , Risto Ljokkoi
发明人： Karim Hanana , Risto Ljokkoi
IPC分类号： B03B5/00 , B07B1/20 , B07B13/11 , D21D5/02 , D21D5/06
CPC分类号： B07B1/20 , B07B13/11 , D21D5/026
摘要： An apparatus and method for treating fiber suspension is especially applicable for pulp screening in the wood processing industry, particularly for the separation of light particles from fiber suspensions. The apparatus comprises an outer casing with conduits for inlet pulp, accepts, heavier rejects and lighter rejects; a filter cylinder and a rotor, the surface of which is provided with at least one protrusion; and an opening for guiding the light rejects through the surface of the rotor.
摘要翻译：用于处理纤维悬浮液的装置和方法特别适用于木材加工工业中的纸浆筛选，特别是用于从纤维悬浮液中分离轻质颗粒。该装置包括具有用于入口纸浆的导管的外壳，接受较重的废品和较轻的废料; 过滤筒和转子，其表面设置有至少一个突起; 以及用于引导光废料通过转子表面的开口。

7. 发明授权

US5338451A Apparatus for treating pulp 失效
标题翻译：纸浆处理设备
公开(公告)号：US5338451A
公开(公告)日：1994-08-16
申请号：US33319
申请日：1993-03-15
申请人： Pentti Lindberg , Risto Ljokkoi
发明人： Pentti Lindberg , Risto Ljokkoi
IPC分类号： B30B9/12 , D21D1/40 , D21D5/02 , D21F1/66 , B01D35/28
CPC分类号： D21D1/40 , B30B9/128 , D21D5/026 , D21F1/66
摘要： An apparatus for treating pulp includes an outer casing, a stationary screen surface mounted in the outer casing. A conduit introduces pulp into the interior of the screen surface. An annular space is defined between the screen surface and the casing for receiving the fraction passing through the screen surface. A feed screw is rotatably mounted in the interior of the screen surface. The feed screw extends vertically or is to some extent inclined relative to the vertical direction. The feed screw includes a shaft and pulp conveying blades. The periphery of the feed screw is provided with a nozzle conduit extending substantially parallel to the shaft and located close to the screen surface for spraying washing liquid to the screen surface. The apparatus is especially suitable for screening and/or thickening of fiber suspensions in the wood processing industry.
摘要翻译：用于处理纸浆的设备包括外壳，安装在外壳中的固定屏幕表面。导管将纸浆引入屏幕表面的内部。在屏幕表面和壳体之间限定一个环形空间，用于接收通过屏幕表面的部分。进给螺杆可旋转地安装在屏幕表面的内部。进给螺杆垂直延伸或者在某种程度上相对于垂直方向倾斜。进料螺杆包括轴和纸浆输送叶片。进料螺杆的周边设置有基本上平行于轴延伸并且靠近筛面的喷嘴导管，用于将洗涤液喷射到筛面。该设备特别适用于木材加工业中纤维悬浮液的筛选和/或增稠。

8. 发明授权

US4995991A Method and apparatus for improving the operation of a disc filter 失效
标题翻译：用于改善盘式过滤器的操作的方法和装置
公开(公告)号：US4995991A
公开(公告)日：1991-02-26
申请号：US326311
申请日：1989-03-21
申请人： Risto Ljokkoi , Tapani Niiranen , Pekka Purho , Erkki Savolainen , Jari Siitonen
发明人： Risto Ljokkoi , Tapani Niiranen , Pekka Purho , Erkki Savolainen , Jari Siitonen
IPC分类号： D21D5/04
CPC分类号： D21D5/046
摘要： A disc filter and method of operating same is provided in which a liquid jet is intermittently used to detach pulp cake from the disc filter. In operation, mechanical or electrical means actuate a nozzle to spray pressurized fluid at a portion of the boundary between the surface of each disc filter segment and its associated pulp cake. The nozzle is actuated to begin spraying as respective segments move into register with the nozzle and are cause to discontinue spraying prior to moving out of register when the loosened pulp cake falls from the segments by gravity. the improved control of pulp cake removal reduces use of washing fluid and results in improved pulp cake consistency.

9. 发明授权

US06340805B1 Method of manufacturing a wire screen product 失效
标题翻译：丝网制品的制造方法
公开(公告)号：US06340805B1
公开(公告)日：2002-01-22
申请号：US09077701
申请日：1998-05-28
申请人： Risto Ljokkoi
发明人： Risto Ljokkoi
IPC分类号： B33K9007
CPC分类号： D21D5/16 , Y10T29/49604
摘要： The present invention relates to a method of manufacturing a wire screen product which is especially suitable for screening fiber suspensions of the wood processing industry. It is a characteristic feature of the method according to the invention of manufacturing a wire screen product including screen wires disposed crosswire in relation to a support arranagement that includes at least one support wire, the screen wires and support wire being secured to each other such that, at the first stage, the screen wire is welded by a button spot weld to the support arrangement and, at the second stage, the screen wire is welded at another point to the same support structure.
摘要翻译：本发明涉及一种特别适用于筛选木材加工业的纤维悬浮液的丝网制品的制造方法。根据本发明的制造丝网产品的方法的特征在于包括相关于包括至少一个支撑线的支撑布置布置的丝线的丝网，屏幕线和支撑线彼此固定，使得在第一阶段，丝网通过按钮点焊被焊接到支撑装置，并且在第二阶段，丝网在另一点被焊接到相同的支撑结构。

10. 发明授权

US5960962A Screen 失效
标题翻译：屏幕
公开(公告)号：US5960962A
公开(公告)日：1999-10-05
申请号：US135009
申请日：1998-08-17
申请人： Risto Ljokkoi
发明人： Risto Ljokkoi
IPC分类号： D21D5/02 , B07B1/04
CPC分类号： D21D5/026
摘要： A pressure screen comprises an outer housing with a pulp inlet, and accepts and rejects outlets and an advantageous mount of a stationary screen drum (screen cylinder) in the housing. The screen drum is secured at an upper end flange with bolts to an intermediate ring and supported via the intermediate ring by the housing. A rotating rotor is disposed inside the screen drum. The bottom end of the screen drum is provided with at least one groove with at least one primarily flexible material ring disposed in the groove. Cooperating substantially conical surfaces are provided in the bottom of the screen drum and a bottom intermediate ring, in which the groove is formed.
摘要翻译：压力屏幕包括具有纸浆入口的外壳，并且接收和排出出口以及在壳体中有利地安装固定的丝网鼓（筛筒）。筛筒通过螺栓固定在上端法兰上，到中间环，并通过外壳经由中间环支撑。旋转转子设置在筛筒内。丝网鼓的底端设置有至少一个凹槽，其中至少一个主要柔性材料环设置在凹槽中。在丝网鼓的底部设有大致圆锥形的表面，并且形成有凹槽的底部中间环。

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