SU1322056A1 - Tunnel kiln - Google Patents

Abstract

The invention relates to the manufacture of building products, in particular to tunnel kilns for baking bricks, and is aimed at reducing heat loss. On the longitudinal walls 2 of the tunnel kiln there are inclined slopes 7, on which flexible seals 9 are laid. The latter can be made in the form of a string 10 and circular or rectangular sections 11 mounted on each inclined slope 7. In the kiln firing process, an overpressure is created. The seals 9, rolling down the slopes 7, cover the gaps between the walls 2 and the movable hearth 6, which eliminates the leakage of heat. 1 hp f-ly, 5 ill. with y (L oo to tsD O 01 O)

Description

The invention relates to the production of building products, in particular, to tunnel kilns for the firing of bricks, ceramic plates and other products.

The aim of the invention is to reduce heat loss.

FIG. 1 shows a tunnel kiln, a cross section; in fig. 2 — node I in FIG. one; in fig. 3 - ramps on the longitudinal wall and on the movable hearth and seals loosely laid on them; in fig. 4 is a section A-A in FIG. 2; in fig. 5 - rectangular seals.

The tunnel kiln consists of 2 longitudinal walls mounted on the base of 1

ten

The tunnel oven works in the following way.

Outside the furnace, carts 5 are sequentially loaded, for example, with bricks and fed to the furnace along rails 4, while carriages 5 are successively interlocked with each other, forming a constantly moving under 6.

In the kiln firing process, an overpressure is created which tends to force the burning gas out of the kiln. At the same time, the seals 9, rolling down the slopes 7, cover the gaps between the walls 2 and the movable hearth 6, while in the process of movement the gap between the walls 2 and the hearth

overlap 3 that form the tunnel. B (5 may vary up or down. However, in all cases, each gap is blocked by a sealer 9 due to the fact that the slope angle of the ramps 7 is greater than the friction angle of the materials of the ramps 7 and seals 9, as a result, heat leaks from the furnace are practically excluded If the slope angle of the slopes 7 is equal to or less than the friction angle of the materials of the slopes 7 and the compactor 9, then the seals 9 do not roll, therefore, the gaps between the walls 2 and the bottom 6 are not closed, which leads to leakage of thermal energy.

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the latter on the rails 4 are installed movable carriages 5, which form a movable under 6. On the longitudinal walls 2, the slopes 7 are inclined toward the side, while the latter can be performed in the longitudinal grooves 8. thus allowing the walls to move closer to the hearth 6.

On inclined slopes 7, flexible seals 9 are laid, while the slope angle of slopes 7 is made larger than the friction angle of materials of slopes 7 and seal 9, which ensures rolling of seals 9, as a result of which the latter are constantly in contact with slopes 7 and the side walls of the hearth 6, overlapping the gap between them.

The seals 9 can be made in the form of a string 10 stretched over each inclined slope 7 and the hollow elements 11 of circular or rectangular section mounted on it. In order to increase the pressing force of the seals 9 to the hearth 6 and eliminate the occurrence of jamming forces of the seal 9 in the gap between the hearth 6 and the ramp 7 on the 35 side walls of the hearth 6, bevels 12 can be made, and the size of the cross section of the seals 9 should be at least two gaps between the hearth 6 and each wall at their maximum removal. Strings 10 can

Claims (2)

1. Tunnel kiln, containing longitudinal-3Q overlapping walls, forming a tunnel, trolleys forming a flat movable sub, and a sealing device, characterized in that, in order to reduce heat loss, the sealing device is designed as slopes placed in the longitudinal walls of the furnace and laid on them flexible seals of refractory material in contact with the side walls of the movable hearth, while the angle of inclination of the slopes is more than the angle of friction of the material of the slopes be tensioned by a spring 13, which provides security and utilizers. axial pressing of the elements 11 to each other with the formation of a continuous seal, while to keep the seal from axial displacement, it is fixed on the brace 14.d. 2. A furnace according to claim 1, characterized in that the flexible beaters are made in the form of a string strung over each inclined slope with hollow stitching on it, elements of circular or rectangular cross section. The tunnel oven works in the following way. Outside the furnace, carts 5 are sequentially loaded, for example, with bricks and fed to the furnace along rails 4, while carriages 5 are successively interlocked with each other, forming a constantly moving under 6. In the kiln firing process, an overpressure is created which tends to force the burning gas out of the kiln. At the same time, the seals 9, rolling down the slopes 7, cover the gaps between the walls 2 and the movable hearth 6, while in the process of movement the gap between the walls 2 and the hearth (five 20 (five 25 Invention Formula 1. Tunnel kiln containing longitudinal walls with overlap, forming a tunnel, carts forming an flat movable under, and sealing device, characterized in that, in order to reduce heat loss, the sealing device is made in the form of sloping sideways placed in the longitudinal walls of the furnace and laid on them flexible seals of refractory material in contact with the side walls of the movable hearth, while the angle of inclination of the slopes is greater than the angle of friction of the material of the slopes and upolite. 2. A furnace according to claim 1, characterized in that the flexible beaters are made in the form of a string strung over each inclined slope with hollow stitching on it, elements of circular or rectangular cross section. 1 Compiled by. Petrova Tehred I. Veres Corrector L. Beskid Circulation 543Subscribe VNIIPI USSR State Committee for Inventions and Discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and Printing Enterprise, Uzhgorod, ul. Project, 4