SU397734A1 - ; ONA ZNOPERTO! - Google Patents

Description

I

The invention relates to devices for heating, in particular to a conveyor oven on a roller hearth for the heat treatment of products, mainly ceramic.

A known flap for a conveyor roller furnace, comprising a metal sheet with flanges, around the perimeter of which refractory plates are laid.

The purpose of the invention is to prevent rollers from exposure to high temperatures.

In the proposed blade, the plates are made with racks around the perimeter and laid close to each other, the space between the refractory plates and the metal sheet is filled with insulating material, and laid over the refractory plates is channelized under the shaped refractories.

FIG. 1 shows the described flap, cross section; in fig. 2 is the same; the section along A-A in FIG. in fig. 3 shows a section along 5-B in FIG. one; in fig. 4 - metal base of the blade with attached kerchiefs.

The base of the blade is a metal sheet / with edges 2 welded to it along the perimeter; end flanges are profiled: one type has a protrusion 3, the other — a recess 4 in which an asbestos gasket is mounted 5. On the inner side of the end flanges are shaped welded pins 6. On top of the base, along four sides, there are walls made of channel-like, closely mounted to each other refractory racks Four corner posts 7

iB is also made in the form of channels, but with one shelf; this is done for the tight joining of two adjacent walls. The end face, which has a recess 4, in order to prevent heating, is closed on top of the refractory mass 8. The shaped kerchiefs 6 are located at the junction between the posts.

Inside the bottom there are two more installed, the same as the perimeter, but twin walls 9. Their purpose is to reduce the spacing between the walls, on which the overlap of refractory plates 10 is arranged. The space between the walls is filled with a light refractory heat insulating material //. Top-laid under the refractory plates laid out below 12. Knives (aprons) 13 and tapered projections 14 are attached to the bottom of the bark along its entire length.

The advancement of the gnats in the furnace along the furnace roller table takes place under the action of the pushers; attached to the chain of the pusher, one of the stop plates picks up the next blade moving along the input roller table and attaches it to the blade that is in the furnace. The force applied by the pusher to the ravine is transmitted by it to all the ravines, and they

moving through the oven. In this case, the protrusion 3 of one blade comes into the recess 4 with the gasket 5 of the adjacent blade, forming a gas-tight lock; The sides of the flaps enter the recess of the walls, creating a labyrinth seal, and the knives (aprons) of the 13 flakes sink into the gutters with sand, providing an airtight shutter. The straightness of the movement of the blades is ensured by sliding the conical protrusions 14 of the blade along the beveled ends of the rollers. The gland coming out of the furnace gets on; the rollers of the output roller table, rotating at a slightly higher speed than the furnace rollers, thanks to the fact that the outermost lizard separates from all the gangs, is fed to the rotary-roller table, turns around, moves on to another roller table, here unloading of the burned products is performed, and then using rotary tables iH driven roller conveyors, the bream overtakes around the furnace and again gets into the furnace with the products again immersed in it.

The products are heated from the arch and side burners, the latter are located at the level of the channeled hearth.

Subject invention

Bream for a conveyor roller furnace, containing a metal sheet with sides, around the perimeter of which refractory plates are laid, characterized in that, in order to protect the rollers from high temperatures, the plates are made with perimeter struts and are laid close to each other, the space between the refractory slabs and metal sheets are filled with thermal insulating material, and atop of refractory slabs is laid channelized underneath the refractory materials.