RU1770699C - Rotary furnace seal - Google Patents

Abstract

The invention relates to a technique for sealing aggregates and can be used in the building materials industry. The purpose of the invention is to simplify the design and increase the sealing efficiency. For this, the furnace body 4 covers a composite o-ring of segments 3 with beveled edges. The pressing devices with springs 5 are connected to the ring 2 of the fixed chamber 1 and the segments 3 by means of pins 6, which ensures a constant fit of the segments 3 to the ring 2 and the housing 4 of the furnace. Due to the bevel of the edges of the segments 3, they overlap each other. 2 ill.

Description

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Oh Yu Yu

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The invention relates to a technique for sealing aggregates and can be used in the building materials industry.

The aim of the invention is to simplify the design and increase the sealing efficiency.

Figure 1 shows a longitudinal section through a seal; in Fig. 2, section A-A in Fig. 1.

The seal of the rotary kiln comprises a fixed ring 2 fixed to the stationary chamber 1. A composite sealing ring of overlapping segments 3 made with beveled edges covers the housing 4 of the rotary kiln. Clamping devices with springs 5 are located parallel to the axis of the furnace, connected to the stationary ring 2 by means of pins 6. The springs 5 are connected to the segments 3 of the sealing ring. The studs 6 are fitted with segments 5, which, due to the beveled edges, overlap each other and are pressed against each other and to the ring 2 by means of springs 5 resting on the plates 7. In the radial direction, the segments 3 are pressed against the housing 4 by means of springs 8 supported on brackets 9.

The gap between the rings 2 and the furnace body 4 is selected so that they do not touch. The dimensions of the segments in the radial direction are determined from the condition that the gap between the housing and the stationary ring is closed in any position and is supported by the entire surface of the ring 2. Each segment 3 takes 5-30 ° around the circumference, depending on the beating of the furnace axis and the manufacturing accuracy (the more run-out and less accurate manufacturing, the less degrees of circumference occupied by segments 3). Segment overlap value

each other depends on their thickness 5 and the bevel angle of the edges af which can be 5-80 ° depending on the strength of the material of the segments and the required degree of compaction of the segments along the bevel (the stronger the material of the segments 3, the smaller the angle a, which requires better sealing, the smaller the angle a). The sizes and characteristics of the springs 5, 8 are determined by calculating from the condition that the segments 3 are constantly pressed against the ring 2 and the furnace body. The remaining sizes are determined constructively and checked for strength and performance.

The seal of a rotary kiln operates as follows.

O-ring segments 3 are pressed by springs 5.8 all the time against the ring 2 and the furnace body 4, which provides a seal.

The use of a seal simplifies the design, which reduces its cost. The constant fit of segments 3 to ring 2 and the furnace body reduces air leaks, which ensures fuel economy.

Claims (1)

The claims A rotary kiln seal comprising a fixed ring fixed to a stationary chamber, a composite sealing ring consisting of segments overlapping each other, and compression devices with springs arranged parallel to the furnace axis and connected to the stationary chamber, characterized in that, in order to simplify the design and increase efficiency seals, segments of the sealing ring are made with beveled edges, and the springs of the clamping devices are connected to the segments,