SU1185041A1 - Arrangement for sealing gap between rotary kiln and stationary chamber - Google Patents

Abstract

DEVICE DLYAUPLOTNENI GAP LKAU rotary kiln and still cameras, comprising a fixed sleeve is fixed to the stationary chamber, a movable sleeve is fixed to the body of the furnace, and the sealing ring element round profile on a stationary shell, characterized in that, in order to increase the operational reliability and simplification of the seal design, it is provided with additional elements of a round profile fixed on the movable shell by means of elastic pins and on the fixed shell along This is its width with the possibility of maximum contact of the elements of the fixed and movable shells.

Description

one

The invention relates to non-ferrous metallurgy, in particular, to equipment for alumina production, and can be used in chemical, construction and other industries where furnaces and dryers with rotary drum are used.

The purpose of the invention is to increase the operational reliability and simplify the seal design.

The drawing shows schematically the proposed device for sealing the gap between the rotary kiln and the fixed chamber, a longitudinal section.

The device for sealing the gap between the rotary kiln and the fixed chamber contains a fixed shell 1 fixed on the fixed chamber 2 and a movable shell 3 attached to the flange-4 mounted on the housing 5 of the rotary kiln. The sealing ring 6 is made of elements of a circular profile 7 and 8. Elements of a circular profile 7 are fixed on the movable shell 3 by means of elastic pins 9 attached to it by one end. The elements of the circular profile 8 are installed throughout the entire width of the fixed shell 1 with the possibility of maximum contact with the elements of the circular profile 7. The plunger washer 10 and the exhaust valves 11 are placed on the housing 5 of the rotary kiln, and the plunger washer 12 is mounted on the axle chamber 1: from the fixed chamber 2 . The elastic pins 9 are evenly placed around the circumference of the movable shell 3. The elements of the round profile 7 and 8 are PERFORMED of the products of the round profile (for example, a tubular material made of nylon fluoroplast, viniplast, resistant to high rates The friction and friction of the material) can also be made from a rod or strip material, in which case the ends of the elements should be closed to the insert part which allows these ends to converge and diverge within certain limits.

The device for sealing the gap between the rotary kiln and the fixed chamber works as follows.

During the operation of the furnace, the elements of the round profile 7, which fit snugly together, are 50412

slid together with the rotary kiln body and slide along the elements of the circular profile 8 located across the entire width of the fixed shell 1 5 and fixed against slipping.

The elastic pins 9 spring up the elements of the circular profile 7, pressing them against the elements of the circular profile 8 and ensuring the density of contact between them. It is desirable to fasten elastic stubs 9 to movable shell 3 through a layer of thermal insulating material, for example, using sleeves with a stop screw and a para-bolt or angle with a bolt and asbestos (para-bolt) gasket welded to the movable shell to avoid heat transfer from the hot shell. and so for a long time to maintain the elasticity of the pins. The free ends of the pins must have a thread on which a nut is screwed to fasten the parts holding the elements of the round profile.

In the case of gas popping, exhaust valves 11 are triggered, which block the special openings in the flange 4 and are connected to the flange through the hinge element and are spring loaded by a strip or wire of elastic metal. Valve opening stops are provided on the flange of the exhaust valves. To clean the gas exhausts from dust, there are intended push-fit washers 10 and 12, the first of which is located on the casing 5 of the rotary kiln 3, and secondly - on the sidewall 13. In the lower part of the seal there is a device for removing the collected dust and returning it to the oven (not shown) . The flange and shell on it belonging to the rotary kiln, respectively, should consist of several tightly fitting and non-weldable parts at the junction in order to minimize the negative impact of the resulting stresses upon thermal elongation of the drum of the kiln. Exhaust valves are installed on the flange evenly around the circumference so that if an overpressure of gases occurs in the working cavity of the furnace, they can find a way out at the front of their impact coming to the flange not to penetrate into the work zone of the pack 11850414

lottery elements. This is the case of the contact elements of the seal that

It is also important that the gas provides compensation for radial

Emissions are enriched with a drink that has longitudinal and longitudinal displacements of the rotating

When contacting the furnace and the beating of its ends, the sealing elements are quickly solved, the issue of more efficient wear is solved. Thus, the harmful influence of high compaction temperatures is eliminated by the cooling of the rubbing elements (their working area of the gas flow rate emissions is shielded from the high temperature of the furnace seal. The rotary kiln body and the proposed device provide 10 -mobile camera).

Claims (1)

DEVICE FOR SEALING THE GAP BETWEEN ROTATING FURNACE AND A FIXED CAMERA, comprising a fixed shell mounted on a fixed chamber, a movable shell attached to the furnace body, and a sealing ring with a round profile element on the fixed shell, characterized in that, in order to increase operational reliability and simplify the design of the seal, it is equipped with additional round profile elements fixed to the movable shell with elastic pins and on the stationary shell along its entire width with the possibility of maximum contact of elements fixed and movable shells.