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    • 3. 发明授权
    • Apparatus for treating pulp
    • 纸浆处理设备
    • US5338451A
    • 1994-08-16
    • US33319
    • 1993-03-15
    • Pentti LindbergRisto Ljokkoi
    • Pentti LindbergRisto Ljokkoi
    • B30B9/12D21D1/40D21D5/02D21F1/66B01D35/28
    • D21D1/40B30B9/128D21D5/026D21F1/66
    • 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.
    • 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。
    • 6. 发明授权
    • Screen cylinder
    • 筛筒
    • US6119867A
    • 2000-09-19
    • US77632
    • 1998-05-28
    • Risto LjokkoiPertti Wathen
    • Risto LjokkoiPertti Wathen
    • B07B1/00B01D29/25B01D29/44D21D5/16B07B1/04B01D1/20B01D21/26B01D1/49
    • D21D5/16B01D29/445B01D2201/184
    • 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.
    • 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。
    • 7. 发明授权
    • Apparatus for treating fiber suspension
    • 纤维悬浮液处理装置
    • US5547083A
    • 1996-08-20
    • US318719
    • 1994-10-13
    • Timo AlajaaskiKalevi LaaksoAntero LaineRisto Ljokkoi
    • Timo AlajaaskiKalevi LaaksoAntero LaineRisto Ljokkoi
    • B01D29/25B01D29/11B01D33/06B01D36/04B07B1/20B07B1/24D21D5/02D21D5/06D21D5/16B07B1/04
    • D21D5/026B01D29/118B01D36/045
    • 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.
    • 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。
    • 8. 发明授权
    • Method of manufacturing a wire screen product
    • 丝网制品的制造方法
    • US06340805B1
    • 2002-01-22
    • US09077701
    • 1998-05-28
    • Risto Ljokkoi
    • Risto Ljokkoi
    • B33K9007
    • D21D5/16Y10T29/49604
    • 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.
    • 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。
    • 9. 发明授权
    • Screen
    • 屏幕
    • US5960962A
    • 1999-10-05
    • US135009
    • 1998-08-17
    • Risto Ljokkoi
    • Risto Ljokkoi
    • D21D5/02B07B1/04
    • D21D5/026
    • 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.
    • 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。
    • 10. 发明授权
    • Method and apparatus for screening fibrous suspensions
    • 筛选纤维悬浮液的方法和装置
    • US5575395A
    • 1996-11-19
    • US275343
    • 1994-07-15
    • Timo AlajaaskiKaj HenricsonKalevi LaaksoAntero LaineRisto LjokkoiOlavi PikkaMarkku SimolaPertti Wathen
    • Timo AlajaaskiKaj HenricsonKalevi LaaksoAntero LaineRisto LjokkoiOlavi PikkaMarkku SimolaPertti Wathen
    • D21D5/00D21D5/02B03B7/00
    • D21D5/026D21D5/00
    • 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.
    • 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。