| 摘要 |
A rectangular shield (2) on the pusher head (1) end face, holds the scrapers. Its edges facing roof (9) and side walls (10, 11) of the oven chamber are populated with interchangeable scrapers. An air line (7) connects to channels in the shield, which discharge at the scrapers Preferred Features: Each interchangeable scraper is inserted into the shield, and has a scraping section. Each plugs into a base in the shield as a detachable scraper. These parts are interchangeable and replaceable. Complementary cross sections secure them. Channels in the interchangeable parts, align to pass air. They are connected by nuts and screws, the screw being hollow to complete air connection. A dovetailed insertion section is employed, with complementary grooves. The bases comprise machined, heat-resistant steel. The scraper cross section has asymmetrically offset blunt pyramids, arranged such that in both scraping directions, the same scraping effect is achieved. The interchangeable elements and/or scraper sections comprise temperature-resistant, chilled castings. Interchangeable sections are inserted in the upper transverse groove of the shield. On the end face of the pusher head, there is an L-shaped mounting bracket (3), into which the shield itself is inserted.
|
