CN212109534U - Anti-crack silica brick - Google Patents

Abstract

The utility model discloses a crack control line silica brick, enclose including the elasticity net and close cuboid base member, the brick shell of stamping forming on the cuboid base member that forms, brick shell thickness is 50-60mm, the brick shell both ends are equipped with recess and boss respectively, the recess and the boss cooperation of two adjacent crack control line silica bricks, recess and boss junction are equipped with fire-resistant heat preservation cotton, the elasticity net includes quadrangle expansion piece and elastic sheet, quadrangle expansion piece comprises horizontal flexible unit and vertical flexible unit integrated into one piece, adjacent two quadrangle expansion piece passes through elastic sheet fixed connection, cuboid base member sealing department passes through elastic sheet fixed connection. The utility model prevents the crack generated by cracking the brick shell caused by the concentration of the thermal expansion stress.

Description

Anti-crack silica brick

Technical Field

The utility model relates to a refractory material field, concretely relates to crack control line silica brick.

Background

The silica brick is a refractory product prepared by firing silica, silica sand, calcium powder, iron phosphorus powder and other raw materials. The method is mainly used for high-temperature parts of kilns such as a blast furnace hot blast stove, a coke oven, a carbon calciner, a glass kiln and the like of iron and steel companies. Various performance indexes of the high-density silica brick are improved, such as: good corrosion resistance, apparent porosity, thermal shock resistance, fracture resistance and the like. However, the thermal expansion force is strong to the destructive force, and in addition, the existing silica brick has no structure for relieving the thermal expansion force by an extension structure, so that the brick body is easy to break. The inventor finds that the silica brick can be normally used as long as the working surface, namely the outer surface of the silica brick does not generate cracks and is not cracked.

Disclosure of Invention

In order to solve the technical problem, the utility model provides an anti-cracking silicon brick with extension structure, difficult fracture. The method is realized by the following scheme:

a crack control line silica brick, enclose including the elasticity net and close cuboid base member, the brick shell of stamping forming on the cuboid base member that forms, brick shell thickness is 50-60mm, the brick shell both ends are equipped with recess and boss respectively, the recess and the boss cooperation of two adjacent crack control line silica bricks, recess and boss junction are equipped with fire-resistant heat preservation cotton, the elasticity net includes quadrangle expansion piece and elastic sheet, quadrangle expansion piece comprises horizontal flexible unit and vertical flexible unit integrated into one piece, adjacent two quadrangle expansion piece passes through elastic sheet fixed connection, cuboid base member sealing department passes through elastic sheet fixed connection.

According to the preferable scheme, the working face of the outer end of the brick shell is provided with a tunnel hole, the remaining non-working face is provided with a U-shaped groove, the brick shell is provided with a hoop, the hoop penetrates through the tunnel hole and is clamped in the U-shaped groove, and the width of the U-shaped groove is larger than that of the hoop.

According to the preferred scheme, the hoop is made of elastic steel and comprises a middle end, and clamping grooves and hanging teeth which are respectively arranged at two ends of the middle end.

According to the preferable scheme, an expansion groove is reserved on the non-working surface of the brick shell, and penetrates through the brick shell and is communicated with the elastic net.

Preferably, the groove and the boss are matched in a clearance fit A8/h 6.

The utility model has the advantages that:

1. brick shell shaping compaction in elasticity net, the ductility of elasticity net has strengthened the ability of the thermal expansion resistance and shrinkage resistance of brick shell, has greatly prevented the cracked phenomenon of silica brick.

2. The thermal deformation extension on the width direction on the side all around of brick shell has been alleviated to the inflation groove, prevents that the thermal stress extrusion from bursting to less brick shell crack phenomenon on the side all around.

Other effects of the present invention will be described in detail with reference to specific embodiments.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic view of the hoop structure of the present invention;

fig. 3 is a schematic view of the structure of the elastic net.

Detailed Description

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in the figure: the utility model provides an anti-cracking silicon brick, includes that 3 encloses the brick shell 1 of closing cuboid base member, stamping forming on the cuboid base member that forms of elasticity net, 1 thickness of brick shell is 50-60mm, 1 both ends of brick shell are equipped with recess 2 and boss 4 respectively, the recess 2 and the boss 4 cooperation of two adjacent anti-cracking silicon bricks, recess 2 and 4 junctions of boss are equipped with fire-resistant heat preservation cotton, elasticity net 3 includes quadrangle expansion piece 5 and elastic sheet 6, quadrangle expansion piece 5 comprises horizontal flexible unit 51 and vertical flexible unit 52 integrated into one piece, adjacent two quadrangle expansion piece 5 passes through elastic sheet 6 fixed connection, cuboid base member is sealed the department and is passed through elastic sheet 6 fixed connection.

In the heating process, hot air in the kiln flows out from the tuyere, so that the temperature of a tuyere brick of the blast furnace can reach more than 800 ℃ when the kiln works, the brick shell 1 is heated and has proper thermal expansion deformation, the telescopic units and the longitudinal telescopic units 52 extend, the transverse telescopic units 51 and the longitudinal telescopic units 52 are compressed and reset through the elastic sheets 6, the four-side buffering function is achieved through the transverse telescopic units 51 and the longitudinal telescopic units 52, the thermal stress is decomposed, and the stress concentration is avoided. The grooves 2 and the bosses 4 of the two adjacent anti-cracking silica bricks are matched, so that the requirement on the deformation size of the length direction deformation of the cuboid brick shell 1 is met, and the refractory heat-insulating cotton is sealed. Preferably, the groove 2 and boss 4 fit together with a large clearance fit, such as A8/h 6.

Further, in order to prevent the brick shell 1 from breaking, the inventor makes structural improvement on the basis of the above scheme, specifically: the brick shell is characterized in that a tunnel hole 7 is formed in the working face of the outer end of the brick shell 1, a U-shaped groove 8 is formed in the rest non-working face, the brick shell 1 is provided with a hoop 9, the hoop 9 penetrates through the tunnel hole 7 and is clamped in the U-shaped groove 8, and the width of the U-shaped groove 8 is larger than that of the hoop 9. The tunnel hole 7 effectively prevents the anchor ear 9 from directly exposing to the high-temperature environment, and the anchor ear 9 blocks the burst of the brick shell 1 through mechanical external force. Further, in this embodiment, the hoop 9 may adopt the following specific structure: the hoop 9 is made of elastic steel and comprises a middle end, and clamping grooves 91 and hanging teeth 92 which are respectively arranged at two ends of the middle end. What elastic steel made including better ductility more adapts to the utility model discloses the deformation of brick shell 1 under the high temperature state. The clamping groove 91 and the hanging teeth 92 are convenient to insert, and the joint does not extend out of the U-shaped groove 8, namely does not extend out of the brick shell 1, so that the kiln cave wall building is smoothly carried out.

An expansion groove 10 is reserved on the non-working surface of the brick shell 1, and the expansion groove 10 penetrates through the brick shell 1 and is communicated with the elastic net 3. In the embodiment, by designing the plurality of expansion grooves 10, the residence time of hot air flow in the cavity is reduced, heat can be distributed outwards through the channel, the thermal expansion coefficient can be reduced, the service life of the brick body is ensured, and the heat is properly distributed outside the pipeline without influencing the kiln because the brick body is laid at the tuyere of the blast furnace; meanwhile, the expansion groove 10 relieves the thermal deformation extension in the width direction on the peripheral side surface of the brick shell 1, and prevents the thermal stress from extruding and bursting.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims (5)

1. An anti-cracking silica brick is characterized in that: including the elasticity net enclose close cuboid base member, the brick shell of stamping forming on the cuboid base member that forms, brick shell thickness is 50-60mm, the brick shell both ends are equipped with recess and boss respectively, the recess and the boss cooperation of two adjacent crack control lines silica bricks, recess and boss junction are equipped with fire-resistant heat preservation cotton, the elasticity net includes quadrangle expansion piece and elastic sheet, quadrangle expansion piece comprises horizontal flexible unit and vertical flexible unit integrated into one piece, adjacent two the quadrangle expansion piece passes through elastic sheet fixed connection, cuboid base member sealing department passes through elastic sheet fixed connection.

2. The anti-cracking silica brick according to claim 1, wherein: the brick shell outer end working face is equipped with the tunnel hole, is equipped with U type groove on the surplus non-working face, the brick shell is equipped with the staple bolt, the staple bolt passes to be equipped with the tunnel hole and clamps in U type groove, U type groove width is greater than the staple bolt width.

3. The anti-cracking silica brick according to claim 2, wherein: the staple bolt is made for the elastic steel, and it includes middle end and locates draw-in groove, the hanging tooth at middle end both ends respectively.

4. The anti-cracking silica brick according to claim 1, wherein: and an expansion groove is reserved on the non-working surface of the brick shell and penetrates through the brick shell to be communicated with the elastic net.

5. The anti-cracking silica brick according to claim 1, wherein: the groove and boss fit as a clearance fit A8/h 6.

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