SU1571385A1 - Rotary furnace packing - Google Patents

Abstract

The invention relates to the equipment of the building materials industry, the metallurgical, chemical, ferrous and other sectors of the industry where rotary drum thermal units are used. The purpose of the invention is to improve the tightness and durability. For this, the plate 3 of the composite sealing ring that encloses the furnace body 1 is made with curved ends that replicate the shape of the furnace body and are welded to the outer side of one side of the plates 5. The plates 3 have a wear-resistant layer applied by spraying on the end and are attached to the labyrinth flange a ring mounted on the dust precipitating chamber 4. The pressing mechanism of the sealing ring to the rotary kiln is made in the form of a bracket 6 mounted on the chamber 4 with steps attached to it adjustment by the lever 7 and the spring 8, which is made of a rod with a groove for fastening. 2 hp f-ly, 5 ill.

Description

The invention relates to a compaction technique working under vacuum in rotating drums and can be used in the building materials industry, as well as in the metallurgical, chemical and other sectors of the industry where heat units (furnaces and dryers) are used (rotating drum, working under vacuum.

The purpose of the invention is to increase the ger-4-gauging and durability of the rotary kiln seal.

Fig. 1 shows the rotary kiln seal, a general view; figure 2 - section aa in figure 1; on frg.Z - node I in figure 1; Fig. 4 shows a sealing element with sputtered wear with a resistant layer; figure 5 - shaped spring.

The rotary kiln seal contains the sealing ring 2 enclosing the kiln body 1, which consists of separate plates 3 with a wear-resistant layer at the end, attached to the thickening chamber 4. The plates 3 of the sealing ring 2 are made with bent, repeating the shape of the kiln body, with the ends using Stamping, thickness is 1.5-2 mm. The wear-resistant layer is deposited by spraying; its material is alloys for surfacing (for example, according to GOST 21448-75). The plates 3 are butt-joined, and on their outer surface. The lining 5 is welded on one of the sides. The mechanism of pressing the sealing ring to the fixed chamber and the rotary kiln is made in the form of a bracket 6 mounted on the fixed chamber (dust precipitating chamber 4) with stepwise adjustment Key lever 7 and spring 8. Spring 8 is made in the form of a rod of spring wire with groove ends for

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fasteners. At one end of the spring 8, 3-4 turns are wound, acting as a guide sleeve, preventing the spring from coming out of the common plane formed by the arc of the spring and the furnace axis, and the hinge removing the voltage concentrator formed when rigidly attached to the lever 7 when changing his position. The second end of the spring 8 is bent at an angle of 15-30.

The lever 7 is attached to the bracket 6 by means of axis 9, washer 10 and linch pin 11. Spring 8 is fixed on lever 7 via axis 12 with washer 13 and linch pin 14, the second end of spring 8 is inserted into a bracket-like stamp on plate 3. Locking lever is carried out by an axis 15 and a linch pin 16. A contact ring 17 is fixed on the furnace body 1. At the same time, the plates 3 are attached to the flange 18 of the labyrinth ring mounted on the dust-collecting chamber 4.

The compaction of the rotary kiln operates as follows.

Together with the furnace, the contact ring 17 rotates and moves along the axis of the furnace. Under the action of shaped springs, the pressed plates 3 are pressed to the surface of the contact ring 17, and the required pressing force is established by the pressing mechanism during the assembly of the seal, overlapping the plates 5 welded to each plate, The plates 3 form an airtight flexible chamber, one end of which is a split cylinder with a deposited wear-resistant layer sliding along the contact ring 17, and the other end fixed n on a fixed labyrinth ring. The adjustment of the mechanism for pressing the sealing ring is carried out by turning the lever 7 around the axis 9 and fixing the required position

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axis 15 and linch pin 16. At the same time, the spring 8 operates only for bending, which ensures an increase in the durability of its operation under conditions of elevated temperatures.

To create the necessary tightness, it is sufficient to apply a pressure of 1-2 kg at which the wear of the slip ring is insignificant, while the sprayed wear layer does not wear out either. To reduce friction to a minimum, graphite rods can be mounted into the slip ring.

Claims (3)

1. Sealing rotary kiln containing enclosing kiln body Aa 713856 composite sealing ring of individual plates with a wear-resistant layer at the end and pressing it against the fixed chamber and the rotary kiln, characterized by By the fact that, in order to increase the tightness and durability, the sealing ring plates are made with curved, repeating the shape of the furnace body ends and welded on the outer surface of them on one of the sides. )five 2. Sealing according to claim 1, characterized in that the pressing mechanism is designed as a bracket mounted on a fixed chamber with a bracket attached to it 20 by the stepped adjustment of the lever and spring. i 3. Sealing according to claims 1 and 2, characterized in that the spring 25 of the pressing mechanism is made in the form of a spring wire wire with grooved ends for fastening. I // 15.16 eleven Fig.Z fig L figv