RU2308650C2 - Rotating furnace for heat treatment - Google Patents

Abstract

FIELD: heat treating.

SUBSTANCE: rotating furnace comprises heating chamber, central load-bearing pipe provided with openings for supplying and discharging parts, rotating drum made of the disks and secured to the pipe, and deflecting spirals interposed between the disks. The load-bearing pipe with the drum are mounted at an angle to the horizontal plane.

EFFECT: reduced sizes and power consumption.

2 dwg

Description

The invention can be used in mechanical engineering and other industries for the thermal treatment of small parts, bulk materials and relates to thermal equipment, namely to rotary kilns having a drum and an internal spiral guide, providing movement of the heat-treating parts for their mechanized, continuous and uniform heat treatment.

A drum furnace is known, comprising a heating chamber, a drum rotating therein, having on its inner surface a guiding conveying spiral, which allows heat-treated parts to move when the drum rotates. (The book "Electric resistance furnaces and arc furnaces", ed., Edited by MB Gutman. - M .: Energoatomizdat, 1983, p. 40).

The closest analogue is a drum furnace for heat treatment of small parts and bulk materials, containing a heating chamber, a central pipe with holes for feeding and dispensing parts, a rotating drum mounted on it with guide spirals placed in it (SU 1016650, F27B 7/00, 07.05 .1983).

The technical result of the invention is to reduce the material consumption of the furnace, reduce energy costs during heat treatment, facilitate its operation and repair.

To achieve a technical result in a drum furnace for heat treatment of small parts and bulk materials containing a heating chamber, a central pipe with holes for supplying and dispensing parts, a rotating drum mounted on it with guide spirals placed in it, the central pipe is made of a carrier, the drum is made into in the form of disks with guide spirals fixed between them with different start-up versions - direct and reverse direction, while the carrier tube with the drum are located at an angle to the horizontal tal surface.

The technical essence of the invention is presented in figures 1 and 2. Figure 1 shows a General view of the furnace. In the heating chamber 1, with thermal insulation 2 and heating elements 3, there is a support pipe 4 with a feeder 5 and windows 6, 7, 8.

A drum 9 is installed on the pipe with disks 10, 11, 12, between which spirals 13 and 14 are fixed, which ensure that the workpiece is moved during rotation of the drum to ensure uniform heat treatment. The spirals are made in different start (left and right) versions. On average, the disk 11 has a window 15 for the receipt of parts from one spiral to another. When the drum rotates, the workpieces come from the feeder through the central support pipe and pass in the direction indicated by the arrows sequentially through spirals of the forward and reverse directions with further removal from the furnace through the central support pipe. A model of the proposed design was made and the corresponding drawings of an industrial furnace with a capacity of 30 kW were developed.

Claims (1)

A drum furnace for heat treatment of small parts and bulk materials, containing a heating chamber, a central pipe with holes for supplying and dispensing parts, a rotating drum mounted thereon with guiding spirals placed therein, characterized in that the central pipe is made of a carrier, the drum in the form disks with guiding spirals fixed between them in different versions - with forward and reverse directions, while the central tube with a drum is located at an angle to the horizontal rotation henna.

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