CN1310064A - 筛网和制造这种筛网的工艺 - Google Patents

筛网和制造这种筛网的工艺 Download PDF

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CN1310064A
CN1310064A CN01111924A CN01111924A CN1310064A CN 1310064 A CN1310064 A CN 1310064A CN 01111924 A CN01111924 A CN 01111924A CN 01111924 A CN01111924 A CN 01111924A CN 1310064 A CN1310064 A CN 1310064A
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H·加布尔
A·皮希勒尔
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Andritz AG
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    • B01D29/908—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor having feed or discharge devices for feeding provoking a tangential stream
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    • B01D33/466—Regenerating the filter material in the filter by scrapers, brushes nozzles or the like acting on the cake-side of the filtering element scrapers
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    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
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    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
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Abstract

本发明涉及一种平板型筛网或圆筒型筛网,所述筛网包含杆和杆轴承支承元件,其主要特征是:在杆1的侧壁上具有突起3,所述突起与支承元件2上形状相反的凹槽(4)啮合。本发明也涉及一种制造这种类型筛网的工序,其特征在于:弹性弯开支承元件2,将杆1插入,当支承元件恢复原状时,密实地环绕杆1,形成筛网。

Description

筛网和制造这种筛网的工艺
本发明涉及一种平板型或圆筒型筛网，所述筛网包括杆和杆轴承的支承元件。此外，本发明还涉及一种制造这种筛网的方法。
众所周知，有各种类型的筛网，例如WO98/14658介绍的筛网。在该专利文献中，一个筛网具有多个杆和支承元件，支承元件具有狭槽。在这种情况下，支承元件具有U型轮廓，这意味着这些杆中部分必须经历塑性变形，以便将杆紧固在支承元件上。德国专利DE4435538A1介绍了另一种筛网。在该专利文献中，也使用杆和杆轴承支承元件，由于支承元件的塑性变形，通过夹持，杆被紧固。此外，平板型筛网和圆筒型筛网(向心的或离心的)是众所周知的，通过焊接方式，将杆与支承元件连接在一起。然而，由于在焊接期间，一定大小的焊接应力被传递到元件上，导致整个筛网体扭曲变形，这种紧固方式具有一些缺陷。此外，由于在一定环境下，由于磨损，终于有一天，焊缝可能开始破裂，紧固效果不能永远保持。同时制造工序也相当复杂和耗时。同时在两个相邻的筛网杆之间，很难精确地确定支承宽度。
本发明的目的是提供一种筛网，杆和/或支承元件没有塑性变形，没有焊缝。此外，将研究用于这种类型的筛网的简单的制造工序。
本发明的特点在于，在杆的侧壁上具有突起(indentation)，所述突起与支承元件上形状相反的凹槽啮合。因而，通过形成闭合，无须焊接或塑性变形，形成一种固定的连接。
本发明的一种优点是所述突起是圆形或椭圆形的，半径0.1mm＜r＜2mm。因而，能够将杆轻易地安装，而不引起支承元件出现塑性变形。同时制造成本低。杆可以轻易地被插入，圆形或椭圆形突起导致更加均匀的压力分布，使杆与支承元件形成良好的连接。
本发明的另一种优点是杆远离流动的端部和突起之间的距离h1至少是0.1mm＜h1＜6mm。这增强了杆的抗震能力。
本发明的另一种优点是在所述杆每个侧壁上，具有三个或更多的与各自凹槽对应的突起。这意味着可以获得一种牢固的闭合。
本发明的另一种方案是在所述杆的每个侧壁上的突起的数量不相等。因而，当发生单向湍流时，保证具有良好的紧固效果。
本发明的另一种方案是支承元件具有T型或I型。这种形状提供了一个更大的筛网区域。
本发明的一种良好结构是：杆的整体高度为H，插入支承元件内的高度为h，h与H之比最好大于0.5。这使杆更有效地抵抗流动力。
本发明的一种良好结构是：杆的底部与支承元件压在一起。这样在承受更大的力时，提供更好的稳定性。
本发明也涉及一种制造这种类型筛网的工序，其特征在于：弹性弯开支承元件，将杆插入，当支承元件恢复原状时，正向环绕杆，形成筛网。因而，在没有焊接或施压的情况下，筛网可以轻易地被形成，能够准确地定位杆，从而，获得小的间隙。
本发明的另一种更好的方案是筛网被卷曲在一起形成一个圆筒。
下文将结合附图对本发明进行详细的描述。图1显示了本发明的一种形式，图2显示了通过线Ⅱ-Ⅱ所作的剖视图。
图1显示了一种安装在支承元件2上的三个杆1的示例。图中显示，在右手杆1的两个侧壁上具有几个半径r为的突起3。支承元件包含形状完全相反的凹槽4，相对于筛网匡直径，具有必需的间隙距离，图1中显示，在每侧具有两个突起和两个凹槽。然而，如果有必要，每侧上可以有三个或更多的突起和凹槽。每侧上的突起数量可以不相等。这些突起的形状可以是圆形或椭圆形，半径为r,0.1mm＜r＜2mm。杆可以轻易地被插入，圆形或椭圆形突起产生均匀的压力分布，因而，杆与支承元件形成良好的固定连接。
图1所示，中间杆显示了杆的测量长度，所述杆的长度就是整体高度H。突起之间的距离为h1，其中0.1mm＜h1＜6mm，从杆1离开流动的端部到支承元件之间的距离为h1，杆1伸入支承元件的长度为h,h与H之比最好大于0.5。杆在远离流动的方向上的伸出部分可以与支承元件的表面5压在一起，以获得良好的紧固。如果支承元件被制成T型，可以使用这种方式。如果使用I型，不能和杆1压在一起。除了T型和I型之外，支承元件还可以被制成其它形状，例如正方形、矩形、具有圆角的正方形、具有圆角的矩形，在一个或几个角落形成所述圆角。支承元件2上用于夹持杆1的凹口可以具有间隙，所述间隙等于远离流动一侧的角度∝。筛网匡的圆柱型形状避免了支承元件2上出现塑性变形。
图2是一个通过图1中Ⅱ-Ⅱ线所做的横截面视图，此处，显示了一个T型的支承元件和一个杆1。在表面5上，如果需要，杆1可以与支承元件压在一起。杆和支承元件之间的连接基本上是肯定的，也就是说，没有单个元件的塑性变形或附加的连接，例如焊缝。可制造这种类型的筛网，即通过将杆和支承元件压在一起，直到到达锁定位置。另一种类型的制造是，弹性弯开支承元件，因而，用于杆的凹槽6扩展，插入杆1。当支承元件弹性返回原来的状态时，通过被夹持的杆，一个标准筛网被形成。由于上述的嵌入联结，该工序允许杆1精确地插入支承元件2，从而，降低了窄槽宽度偏差。如果这种标准筛网被形成一个筛网匡，由于当筛网被卷起时的弯曲曲率，夹持效果被进一步增加。将杆的突出端与支承元件2压在一起，进一步增加了筛网的稳定性。根据本发明，支承元件2可以被形成为具有突起6的环型，突起的尺寸比指定的小，也就是突起6比杆1的突起稍小。因此，所述环在一点被加工出缺口，将所述缺口弯开，使缺口能够将杆锁定。当环返回原始状态，它们被焊接在一起，形成一个匡。
本发明并不局限于上述示例。相反，杆1上的突起3可以被成型得尽可能的长，以便它们与支承元件上的形状相反的凹槽啮合。杆1也可以具有从矩形到三角形中的任何形状。

Claims (10)

1 平板或圆筒型筛网，包含杆和杆轴承支承元件，其特征在于：在杆(1)的侧壁上具有突起(3)，所述突起与支承元件(2)上形状相反的凹槽(4)啮合。
2 一种根据权利要求1所述的筛网，其特征在于：所述突起(3)是圆形或椭圆形的，最好半径r取0.1mm＜r＜2mm。
3 一种根据权利要求1或2所述的筛网，其特征在于：杆(1)远离流动的端部和突起(3)之间的距离h1至少是0.1mm＜h1＜6mm。
4 一种根据权利要求1～3之一所述的筛网，其特征在于：在一个侧壁上，具有三个或更多的与各自凹槽(4)对应的突起(3)。
5 一种根据权利要求1～4之一所述的筛网，其特征在于：在所述杆(1)的两个侧壁上的突起(3)的数量不相等。
6 一种根据权利要求1～5之一所述的筛网，其特征在于：支承元件(2)为T型或I型。
7 一种根据权利要求1～6之一所述的筛网，其特征在于：杆(1)的整体高度为H，插入支承元件(2)内的高度为h,h与H之比最好大于0.5。
8 一种根据权利要求1～7之一所述的筛网，其特征在于：杆(1)的底部与支承元件(2)压在一起。
9 一种制造权利要求1～8之一所述筛网的工序，其特征在于：弹性弯开支承元件(2)，将杆(1)插入，当支承元件(2)恢复原状时，密实地环绕杆(1)，形成筛网。
10 一种根据权利要求9所述工序，其特征在于：筛网被卷曲在一起形成一个圆筒。
CNB011119241A 2000-02-03 2001-02-02 筛网 Expired - Fee Related CN1198675C (zh)

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EP1122359A2 (de) 2001-08-08
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US20010020600A1 (en) 2001-09-13
DE50106281D1 (de) 2005-06-30
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