CN2816721Y - Labyrinth-type sealing annular burner wind-box - Google Patents

Abstract

The utility model discloses a labyrinth-type sealing annular burning machine wind-box which is composed of box bodies 1 and sealing pieces 2. A pre-expansion gap 3 is reserved between outer walls of the adjacent box bodies 1, and a horizontal groove 4 is arranged on the outer wall of the box body 1. Horizontal grooves 4 with equal height are oppositely buckled to form a rectangular groove. The sealing piece 2 is embedded in the rectangular groove, the upper and the lower parts of the rectangular groove are sealed and a plurality of the sealing pieces can be arranged. Because the sealing pieces are directly embedded in a plurality of horizontal grooves on the outer walls of the adjacent box bodies and carbon fibre materials of higher rebound degree and small heat resistance weightlessness are used, gaps which are generated because of stress deformation are avoided. Thus complete sealing effect is achieved, and at the same time, manufacture cost is reduced, service life is prolonged and the yield of an annular burning machine and the quality of sintered ore are enhanced.

Description

Labyrinth collar burns the machine bellows

Technical field

The utility model relates to a kind of improvement of circular machine bellows, and a kind of specifically labyrinth collar burns the machine bellows, is applicable to circular sintering machine.

Background technology

The circular machine bellows are meant 24 box body combinations that single bellows casing onesize, same material is formed of installing along circumference in circular machine, the inside and outside end of adjacent casing passes through bolted respectively, when the single bellows casing is installed, must leave certain pre-gap of expanding between the adjacent single casing, with the thermal expansion that adapts to the bellows that are in operation and the stress deformation of stressed generation, on the inwall of casing, also be provided with crossbeam and take and put platform.Because the outer surface of the single bellows casing that uses at present is shiny surface, the gap just forms the vertical masonry joint of up/down perforation so this expands in advance, in this vertical masonry joint gap, be filled with heat-resisting asbestos pad, the one, can play cushioning effect after, the temperature distortion stressed at casing, to eliminate stress, improve the service life of bellows; The 2nd, seal.In the sintering machine running, on bellows, be covered with fire grate bar, on fire grate bar, be covered with raw materials for sintering, 24 lower box are connected with the inlet duct of air exhauster by a series of devices back, the wind that air exhauster is taken out enters bellows by the top of raw materials for sintering and the both sides of raw materials for sintering by slit between raw material layer and fire grate bar, and then enters the air exhauster inlet duct.Prove in the application: this bellows have the following disadvantages: the one, and easily produce and leak out, promptly when bellows generation irregular deformation or asbestos pad generation scaling loss, the pre-gap of expanding between the adjacent casing will produce leaks out, and air leak rate of air curtain can reach 20～30%; The 2nd, production cost height: for reducing the inleakage between adjacent casing, present solution is, in the casing manufacture process, the outer surface of casing all need pass through retrofit, to reach smooth, thereby the pre-gap of expanding that guarantees two adjacent casing faying faces is even, and this just must increase difficulty of processing, improves production cost; Three are to use the life-span short: because relatively poor, the easy scaling loss of asbestos pad elasticity causes service life short, need repeatedly to change.More than all deficiencies, all the quality to the output of sintering machine and sintering deposit produces bigger influence.

Summary of the invention

The purpose of this utility model is to provide a kind of can make sealing fully between the adjacent casing, the not influence of wind-engaging carton deformed again, can eliminate the influence of thermal expansion, the not restriction of wind-engaging box outer wall smoothness again, and production cost is low, long service life, the labyrinth collar that can improve sintering output and quality are burnt the machine bellows.

For reaching above purpose, the technical scheme that the utility model adopted is: this labyrinth collar burns the machine bellows, by casing, seal constitutes, casing is along circumferential arrangement, in the adjacent casing, the outer end connects by bolted respectively, between the outer wall joint face of adjacent casing, leave the pre-gap of expanding, seal is located between the outer wall joint face of adjacent casing, also being provided with crossbeam on the inwall of casing takes and puts platform, it is characterized in that being provided with horizontal groove at the arrangement warp-wise of the outer wall joint face upper edge of casing casing, the first-class height of level groove of adjacent cabinet exterior joint face make-up, in the horizontal groove of equal altitudes make-up, embed a corresponding seal simultaneously, make between the adjacent cabinet exterior joint face to seal.The utility model is also implemented by following measure: described seal is the cuboid elastic sealing element, its width equals the pre-gap sum that expands between 2 times of the horizontal groove degree of depth on the cabinet exterior joint face and the adjacent cabinet exterior joint face, its thickness is consistent with the height of horizontal groove, its length is consistent with the length of horizontal groove, adopt carbon fiber combined high temperature encapsulant to make characteristics high temperature resistant, that rebound degree is higher, heat-resisting weightlessness is little that this material has; Described casing is established 24, the inside and outside end of adjacent casing joint face is closely fixedly connected by bolt respectively, seal is held in the horizontal groove, to reach the effect of sealing, horizontal groove make-up on the cabinet exterior joint face forms rectangular slot, the width of rectangular slot and highly all can according to casing radially the thickness of glacing flatness and tank surface quality, box body wall determine flexibly; Horizontal groove on outer wall joint face of described casing can parallelly be established the 1-4 bar from top to bottom, make the rectangular slot that forms the multiple tracks make-up between the adjacent casing joint face, in rectangular slot, all embed corresponding seal, form multiple tracks labyrinth sealing, the one, more help sealing, the 2nd, can keep the casing upper and lower unanimity in gap that expands in advance, can alleviate effectively simultaneously because of stressed, thermal deformation and the bolted power stress that produces not of uniform size.

The beneficial effects of the utility model are: compare with the circular machine bellows of present use, because seal directly embeds in the multiple tracks horizontal groove on the adjacent cabinet exterior joint face, so its sealing property is improved greatly; Because what seal adopted is the little carbon fibre material of higher, the heat-resisting weightlessness of rebound degree, and combine closely with the casing horizontal groove and to have formed labyrinth structure, compare with present seal form, avoided the stress distortion and the slit of generation, thereby reached the effect of sealing fully; Simultaneously, also reduce production cost, prolonged service life, improved the output of circular machine and the quality of sintering deposit.

Description of drawings

Fig. 1 is the local combining structure schematic top plan view of the utility model circular machine bellows.

Fig. 2 analyses and observe enlarged diagram for the utility model along the A-A section.

The specific embodiment

Make the utility model with reference to accompanying drawing 1,2.This labyrinth collar burns the machine bellows, by casing 1, seal 2 constitutes, casing 1 is along circumferential arrangement, in the adjacent casing 1, the outer end is fastenedly connected by bolt 5 respectively, between the outer wall joint face of adjacent casing 1, leave the pre-gap 3 of expanding, seal 2 is located between the outer wall joint face of adjacent casing 1, establishing crossbeam on the inwall of casing 1 takes and puts platform 6, arrangement warp-wise at the outer wall joint face upper edge of casing 1 casing 1 is provided with horizontal groove 4, first-class height of level groove 4 make-ups of adjacent casing 1 outer wall joint face embed a corresponding seal 2 simultaneously in the horizontal groove 4 of equal altitudes make-up.Described seal 2 is the cuboid elastic sealing element, its width equals pre-gap 3 sums that expand between 2 times of horizontal groove 4 degree of depth on the casing 1 outer wall joint face and the adjacent casing 1 outer wall joint face, its thickness is consistent with the height of horizontal groove 4, its length is consistent with the length of horizontal groove 4, adopts carbon fiber combined high temperature encapsulant to make; Described casing 1 is established 24, and the inside and outside end of adjacent casing 1 joint face is closely fixedly connected by bolt 5 respectively, and seal 2 is held in the horizontal groove 4; Horizontal groove 4 make-ups on the casing 1 outer wall joint face form rectangular slot, the width of rectangular slot and highly all can according to casing 1 radially the thickness of glacing flatness and casing 1 surface quality, casing 1 wall determine flexibly; Horizontal groove 4 on 1 one outer wall joint faces of described casing can parallelly be established the 1-4 bar from top to bottom, makes the rectangular slot that forms the multiple tracks make-up between adjacent casing 1 joint face, all embeds corresponding seal 2 in rectangular slot, forms multiple tracks labyrinth sealing.

Claims (3)

1, a kind of labyrinth collar burns the machine bellows, by casing (1), seal (2) constitutes, casing (1) is along circumferential arrangement, in the adjacent casing (1), the outer end is fastenedly connected by bolt (5) respectively, between the outer wall joint face of adjacent casing (1), leave the pre-gap (3) of expanding, seal (2) is located between the outer wall joint face of adjacent casing (1), it is characterized in that being provided with horizontal groove (4) at the arrangement warp-wise of the outer wall joint face upper edge casing (1) of casing (1), the first-class height of level groove of adjacent casing (1) outer wall joint face (4) make-up embeds a corresponding seal (2) simultaneously in the horizontal groove (4) of equal altitudes make-up.

2, labyrinth collar according to claim 1 burns the machine bellows, it is characterized in that described seal (2) is the cuboid elastic sealing element, its width equals pre-gap (3) sum that expands between 2 times of horizontal groove (4) degree of depth on casing (1) the outer wall joint face and adjacent casing (1) the outer wall joint face, its thickness is consistent with the height of horizontal groove (4), and its length is consistent with the length of horizontal groove (4).

3, labyrinth collar according to claim 1 and 2 burns the machine bellows, it is characterized in that the horizontal groove (4) on (1) outer wall joint face of described casing from top to bottom can the parallel 1-4 of establishing bar.