FR2559883A1 - Continuous rotating oven device with separate chambers and continuous production - Google Patents

Abstract

The subject of the invention relates to a continuously rotating oven device with separated chambers and continuous production. It is composed of separate and autonomous volumes 15, 16 with adjoining hearth and vault 21, 22 moving in a circular motion about a central spindle 1. It is intended for the heat treatment of various materials, to heating for forges, rolling, firing products, drying, oven drying, etc.

Description

 The subject of the invention relates to a continuous furnace device rotating with separate chambers and with continuous production.

 It is intended for the heat treatment of various materials, for heating for forges, rolling, for cooking products, for drying, steaming, etc.

 Are known ovens, dryers, ovens or other of the rotary hearth type which are circular tunnel ovens, where the sole alone rotates, the circular tunnel being fixed, or else the sole and side walls rotate, the volute being fixed.

In these types of ovens, leaks at the joints between hearth and chamber could not be avoided, which did not allow, for example, to precisely achieve a specific atmosphere
and constant to obtain regularity and high thermal precision.

 The device according to the invention eliminates these disadvantages and gives the possibility, by avoiding leaks, of obtaining continuous production by slices of flow regularly distributed over the hour, with preheating, heating and cooling sectorized in sealed and autonomous capacities.

 It is made up of separate, autonomous capacities with adjoining sole and vault moving circularly around a central axis.

In the accompanying drawings, given by way of nonlimiting example, of one of the embodiments of the subject of the invention
Figure 1 shows in elevation and in section the circular furnace with autonomous capacities.

 Figure 2 shows the oven seen in plan.

 Figures 3 and 4 show in the same conditions an alternative embodiment of the same device.

 FIGS. 1 and 2, the furnace is constituted by a fixed central pillar 1, on which is mounted a rotating frame 2 mounted on a base plate 3 with rollers 4. This frame is subjected to the thrust of jacks for its rotation 5.

 On this frame are mounted radial arms 6, 7, 8, 9 stabilized at their ends by supports 10, 11 and others, provided at their base with rollers 12, 13 moving on the circular rail 14.

On each of these arms are mounted a single chamber 15, 16 which may be with two compartments 17, 18, or more, separated by a sliding partition 19 operated by a
cylinder 20.

 Each oven has its hearth 21 its adjoining vault 22 its doors and its product-carrying platforms 23, 24.

 These arms carry a number of variable rooms from one to several, depending on the treatments requested.

 These rooms can be one door to communicate with the outside with entry and exit of products on the same side, or two doors with entry of products on one side and exit on the other.

 Multiple accessories can be used in these chambers, such as fans or distributors of reducing gases or other treatment agents. It can even be provided between the intercommunication chambers for the distribution or recovery of calories.

 The oven can be rotated by circular arc portions and by all hydraulic, pneumatic or electric controls, or in continuous advance with programmed automatic operation.

 According to the alternative embodiment represented by FIGS. 3, 4, the arms can be replaced by a circular supporting floor 25 mounted on supports 26, 27 circulating on rails supporting bells 28, 29 forming ovens with vault 30 and individual floors 31 .

 On the frame 2 is mounted a gantry 32 with arms 33 supporting bell lifting winches 34. These bells can be circular, square, rectangular and the like, are placed on a floor, and their lifting releases this floor on which places the products and, from which they are removed after treatment. This in the case where the integrated sole would not be useful depending on the nature of the product treated.

This is why the shapes, dimensions and arrangements
different elements may vary within the limit of
equivalent, as the materials used for their
manufacturing, without changing for that, the general conception of
the invention which has just been described.

Claims (5)

 10 Rotating oven device with separate chambers and continuous production intended for the thermal treatment of various materials, chemical, metallic or other, making it possible to obtain flow rate bands regularly distributed over the hour with the possibility of pre-setting the preheating, heating and cooling times, characterized by separate (15, 16) and autonomous capacities, with sole (21) and adjoining vault (22) rotating around a central axis (1).  20 Device according to Claim 1, characterized in that the circular oven comprises a fixed central pillar (1), a rotating frame (2) on the base plate (3) with rollers (4) undergoing the thrusts of the rotation jacks (5) .  30 Device according to claim 1 characterized in that on the rotary frame (2) are mounted radial arms (6, 7, 8, 9) stabilized at their ends by supports (10, 11) and others mounted on rollers (12, 13) and moving on a circular rail (14).  40 Device according to claim 1 characterized in that on the upper face of the arms (6, 7, 8, 9) are fixed autonomous ovens (15, 16) to one or two compartments (17, 18) separated by a partition or slide (19) operated by jack (20) each heating unit having one or two doors and product door surface (23, 24).  50 Device according to claim 1 characterized in that the rotating floor carriers (25) support bell-shaped ovens (28, 29) with roof (30) and adjoining floors (31) and connected to a portal frame (33 ) by lifting winches (34).