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Scraper blade and method of manufacturing the same

A technology of scraper blades and scrapers, which is applied in the direction of cleaning devices, transportation and packaging, conveyor objects, etc., can solve the problems of weakened scrapers, blunt tips, etc., and achieve the effect of prolonging life and improving efficiency

Active Publication Date: 2008-10-01
METSO OUTOTEC (FINLAND) OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One disadvantage of this prior art structure is that the break line will weaken the scraper and the new tip will be blunt
[0009] Thus, a problem frequently encountered in the prior art is how best to manufacture scraper blades that have a very long service life and at the same time have optimal spatula performance

Method used

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  • Scraper blade and method of manufacturing the same
  • Scraper blade and method of manufacturing the same
  • Scraper blade and method of manufacturing the same

Examples

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Embodiment Construction

[0035] figure 1 All design points of the belt scraper shown in and 2 have been disclosed by SE-B-468390 and its counterpart US-A-5197587, both of which are hereby incorporated by reference. For the sake of simplicity, identical reference numerals are used for identical elements. However, the doctor blades of the present invention are used instead of the doctor blades disclosed in these documents.

[0036] From figure 1 It is clearly seen in that the belt scraper device is installed so that when the conveyor belt 24 goes around about figure 1 The scraper tip 15 is pressed against the conveyor belt 24 during the operation of the counterclockwise rotating belt drum 25 . available by using the figure 1 The devices shown in detail in to press the belt scraper on the conveyor belt in a conventional manner, these devices make the belt scraper yieldably press on the conveyor belt, and strive to make the scraper tip 15 to figure 1 to move to the right. These devices, not shown in...

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Abstract

A scraper blade adapted to scrape off material from a conveyor bel surface (24) has a scraper tip (15) at one end and a mounting bas (16) at its other end and is tapered towards the tip at least in th outer end of the scraper blade, its scraper blade portion whic extends from the tip (15) and to a point adjacent to or in th mounting base (16) being made with at least two layers (40, 41) , which extend longitudinally along said scraper blade portion, and is characterised in that at least one first layer (40) is made o polyurethane with a lower hardness and a higher abrasion resistanc than at least one second layer (41) which is mainly made o polycarbonate plastic, said at least one second polycarbonat plastic layer (41) being adapted to reinforce and stiffen said a least one first layer, which constitutes a main contact surface (42) against said surface (24) . A method of manufacturing scraper blade for scraping webs of material is also included.

Description

technical field [0001] The invention relates to a scraper blade, in particular for use as a conveyor belt scraper. Background technique [0002] SE-B-468390 and its equivalent US-A-5197587 disclose a scraper blade suitable for use in conveyor belt scraper arrangements. The scraper is made of homogeneous elastomeric or plastic material with internal reinforcement in the form of a sheet metal part which is inserted into the groove of the scraper. For some applications, however, homogeneous blades of this type have been found to be insufficient in wear resistance. Furthermore, the metal reinforcing plate causes trouble when the scraper is damaged, since the material has to be separated. [0003] EP-A-0893376 discloses a similar scraper. This doctor blade has an internal reinforcement corresponding to the removable reinforcement in the doctor blade of the above-mentioned document. Otherwise it is similar, ie the active scraper tip is made of homogeneous material. Therefore,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65G45/12B29C70/68
CPCB29C70/68B65G45/12B65G45/16
Inventor R·亚伯拉罕L·格伦瓦尔
Owner METSO OUTOTEC (FINLAND) OY
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