Web guiding device and guiding belt separation device used for fibrous web machine and

A fiber web machine and separation device technology, which is applied in the direction of paper machine, paper machine wet end, press part, etc., can solve the problem of poor contact accuracy of the guide device, reduced success rate of web guide, and aggravated guide belt Floating and other issues

CN102817275AActive Publication Date: 2012-12-12VALMET TECH OY
8 Cites 5 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2012-12-12

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a web guiding device for a fiber web machine. The web guiding device is provided with a guiding surface (10), and each guiding blowing device (11) used for conveying a guiding belt (12) is aligned with the guide surface (10). The device is arranged to be, between two mutually succeeding guiding blowing devices (11), the deflection angle beta between guiding belt moving directions defined by a stop position (15) formed via a second blowing position (14) and the average moving direction of the guiding belt (12) on a first blowing position (13) of the guiding belt (12) is 10DEG -70 DEG, preferably 30 DEG -60 DEG. The invention also relates to a guiding belt separation device for a fibrous web machine.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a web guiding device (Bahnaufführanordnung) for a fiber web machine, which has a guiding surface, to which each blowing air stream (Blasstrom) for a conveying guiding belt (Aufführstreifen) is directed noodle. The invention also relates to a guide belt separating device for a fiber web machine. Background technique

[0002] In fiber web machines, various devices based on guided blowing (hereinafter also referred to simply as blowing) are used for conveying and guiding the guide belt. There are also so-called blowing plates whose function is also based on guided blowing. The blower plate has a guide plate as a guide surface and, due to the so-called Coanda effect (Coanda effect), produces a vacuum effect by blowing air directed at the guide plate. In other words, the aim is to have the guide strip adjoin the guide surface of the blowing plate, while at the same time allowing the blowing air flow in the direction of conveyance...

Examples

Embodiment Construction

[0013] Figure 1a A part of a known web guiding arrangement for a fiber web machine is shown. The known blowing air flow for web guidance is directed from a flange, i.e. a step, to the guide surface, where the flange consists of a surface which deviates from the guide surface, which can brush against the guide belt and thus cause friction. Fiber web machines are eg paper and board machines. The guide device here comprises guide surfaces 10 , each of which is directed at a blowing air stream 11 for conveying the guide strips 12 . With the aid of this blowing air flow for guidance, the guide strip is to be attached to the guide surface and transported further. However, problems arise in this web guiding device according to the prior art. Such as Figure 1a As shown, the guide strip 12 can only follow the guide surface 10 inaccurately and flutters in an indeterminate manner. At least when the guide surfaces are angled relative to each other, the guide strip can loosen from th...