# US 4,391,206 A · Tubular rotary furnace for incinerating refuse and the like, with inner demountable grid

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- Number: US 4,391,206 A
- Document ID: US4391206A
- Status: Granted
- Kind: A
- Application number: 06/202,897
- Filed: 1981-10-31
- Granted: 1983-07-05
- Earliest claimed: 1978-01-18
- Inventors: Silvano Matteini
- Web page: https://patentgrep.com/patent/US4391206A

## CPC

- F23H 13/00: Grates not covered by any of groups F23H1/00-F23H11/00
- F23G 5/20: having rotating or oscillating drums
- F27B 7/162: {the projections consisting of separate lifting elements, e.g. lifting shovels}
- F23G 2203/208: with interior agitating members
- F23H: GRATES (inlets for fluidisation air for fluidised bed combustion apparatus F23C10/20); CLEANING OR RAKING GRATES
- F23G: CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F27B: FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS

## Abstract

Tubular cylindrical rotary furnace for incinerating refuse and the like, equipped at the inner periphery with grid-shaped means (5) inclined towards the inside and in the direction of the cylinder (1) angular feed; each of said grid-shaped means is supported by radial support bars (7) that are radially extractable from the furnace cylindrical shell.

## Claims

### Claim 1

A rotary cylindrical furnace for incinerating refuse and the like comprising:
an outer wall;
grid means mounted about the inner periphery of said outer wall;
with respect to the direction of rotation of said furnace, the forward edge of said grid means being spaced a greater distance apart from said outer wall than the rearward edge of said grid means so that said grid means are inclined with respect to said wall; and
said grid means not extending into the central area of said furnace.

### Claim 2 (depends on 1)

The rotary furnace as claimed in claim 1, wherein said grid means are mounted to radially extending support bars.

### Claim 3 (depends on 2)

The rotary furnace as claimed in claim 2, wherein said support bars are constructed and arranged so as to be externally retractable into said outer wall.

### Claim 4 (depends on 2)

The rotary furnace as claimed in claim 2, wherein said grid means are directly attached to said support bar at said forward edge, and wherein said support bar includes a link between said rearward edge of said grid means and said support.

### Claim 5 (depends on 2)

The rotary furnace as claimed in claim 2, wherein said outer wall includes flange means, said support bar including means for releaseably engaging said flange means.