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Screen mesh

A screen and cylindrical technology, which is applied in the field of flat or cylindrical screens, can solve problems such as screen body distortion, weld cracking, and complicated manufacturing processes, and achieve uniform pressure distribution, enhanced shock resistance, The effect of low manufacturing cost

Inactive Publication Date: 2005-04-27
ANDRITZ AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this fastening method has some drawbacks because during welding, a certain amount of welding stress is transmitted to the elements, causing the entire screen body to be distorted and deformed.
In addition, because under certain circumstances, due to wear, finally one day, the weld may start to crack, and the fastening effect cannot be maintained forever
At the same time, the manufacturing process is also quite complex and time-consuming
Also between two adjacent screen bars it is difficult to precisely determine the bearing width

Method used

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Embodiment Construction

[0020] FIG. 1 shows an example of three rods 1 mounted on a support element 2 . It is shown in the figure that there are several protrusions 3 with a radius r on the two side walls of the right-hand lever 1 . The support element comprises diametrically opposed grooves 4 with the necessary clearance distance relative to the screen frame diameter, shown in Figure 1, with two protrusions and two grooves on each side. However, there may be three or more protrusions and grooves on each side if necessary. The number of protrusions on each side may not be equal. The shape of these protrusions can be circular or elliptical, with a radius r, 0.1mm<r<2mm. The rod can be easily inserted, the round or oval protrusions create a uniform pressure distribution, thus forming a good fixed connection of the rod with the support element.

[0021] As shown in Figure 1, the middle bar shows the measured length of the bar, which is the overall height H. The distance between the protrusions is h ...

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PUM

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Abstract

A flat or cylindrical screen includes rods and rod-bearing supporting elements. The rods have protrusions in the side walls which are received into inversely shaped recesses in a supporting element. The screen is manufactured by bending the supporting elements open elastically and inserting the rods, whereupon the supporting elements spring back, encircle the rods positively and form a screen mat.

Description

[0001] This technical field [0002] The invention relates to a screen of flat or cylindrical type comprising rods and support elements of rod bearings. Furthermore, the invention relates to a method of manufacturing such a screen. Background technique [0003] Various types of screens are known, such as those described in WO 98 / 14658. In this patent document, a screen has bars and support elements with slots. In this case, the support element has a U-shaped profile, which means that some of these rods must undergo plastic deformation in order to fasten the rods on the support element. German patent DE4435538A1 has introduced another kind of screen. In this patent document, rods and rod bearing support elements are also used, the rods being fastened by clamping due to the plastic deformation of the support elements. Furthermore, flat screens and cylindrical screens (central or centrifugal) are known, with the rods and support elements joined together by means of welding. ...

Claims

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Application Information

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IPC IPC(8): B01D29/11B01D33/073B07B1/20B07B1/24D21D5/16
CPCB01D33/073B01D29/115B07B1/20B07B1/24D21D5/16B01D33/11B01D33/42B01D33/466B01D33/68B01D33/722B01D33/727B01D29/118B01D29/58B01D29/6476B01D29/86B01D29/902B01D29/908Y10T29/496Y10T29/4987
Inventor H·加布尔A·皮希勒尔
Owner ANDRITZ AG