SU1179062A1 - Batch furnace - Google Patents

Abstract

PERIODIC OVEN for burning refractory products, containing lined walls, roof, moving horizontally under the central opening for the exit of combustion products and burner devices placed in the walls, smoke exhaust burs, characterized in that, in order to simplify the design, reduce energy resources and metal consumption, it is provided with a platform with a branch pipe fixed on it, made with the possibility of vertical movement from the drive, on which it is installed under, while the central opening is supplied with I flue gas through the nozzle. (L

Description

The invention relates to chamber periodic furnaces used in the metallurgical, refractory, construction, and ceramic industries for heat treatment of refractory products when they are stationary on the hearth of the furnace.

The aim of the invention is to simplify the design, reducing energy and metal consumption. YU

In FIG. 1 schematically shows a furnace in operating position; figure 2 is the same in the idle position.

The furnace consists of walls 1, covered by a vault and mounted on non-movable concrete supports 2 and cages 3, burners 4, a movable hearth 5 with a central hole, mounted on a lifting platform 6, suspended on flexible links 7, mechanism 20 lifting. The pipe 9 is mounted on the platform 6 and enters the burs 10.

The furnace operates as follows.

During operation, the platform 6 of the lifting mechanism 25 8 is in the upper position. The coolant leaving the burner 4 creates a flow directed along the walls 1 along their entire height, and under the influence of rarefaction in the central hole of the hearth 5 is directed to the center of the working volume of the furnace, where on the surface of the hearth 5 there is a charge 3 with heat-treating products, and penetrating the charge goes down through the central hole and the pipe 9 into the burs 10. Thus, the general direction of the rotating flow from the wall to the center of the working volume and then into the underneath is created, which ensures the best conditions for uniform Shivani gaseous medium.

Further, at the end of the firing, the lifting mechanism 8 releases the platform 6 on flexible connections 7 to the lower position, while the pipe 9 telescopically enters the burs 10. Movable under with the products is rolled out from under the furnace for unloading.

Using the proposed design of the furnace allows you to save energy on cooling the walls of the furnace and lifting the hearth with a charge having a mass 2 times smaller than the hood, simplify the design of the furnace and the lifting mechanism, consisting of standard electric winch and flexible connection, instead of special non-standard hydraulic equipment with four long-stroke hydraulic cylinders, and reduce the metal consumption of the lifting platform bearing the weight of the hearth c. cage, instead of a cap with equipment.

FIG. 2

Claims (1)

PERIODIC FURNACE for firing refractory products, containing lined walls, a vault, horizontally movable underneath with a central outlet for the exit of combustion products and burner devices placed in the walls, flue gas outlet, characterized in that, in order to simplify the design, reduce energy and metal consumption, it is equipped with a platform with a pipe fixed on it, made with the possibility of vertical movement from the drive, which is installed under, while the central hole of the hearth is connected to the smoke discharge boron by means of a branch pipe. b Fie1 1 1179062 2