CN2177924Y

CN2177924Y - Wedged brick

Info

Publication number: CN2177924Y
Application number: CN 93218625
Authority: CN
Inventors: 萧绍辉
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-07-06
Filing date: 1993-07-06
Publication date: 1994-09-21
Anticipated expiration: 2003-07-06

Abstract

The utility model relates to a cross-linked wedged brick which is characterized in that a corresponding convex-concave structure is arranged on each cross-linked face of each wedged brick; the arc-shaped protrusion of one cross-linked wedged face of each cross-linked wedged brick is matched with the arc-shaped groove of the other cross-linked wedged face which is tabled with the cross-linked wedged face. The utility model has the advantages that since the wedge face of the wedged brick is provided with a convex arc or a groove which can be matched in a tabling way at the time of use to form the cross linkage; the wedged brick can be used for building in circle way or in a stagger way; since the cross-linked position is deeper, the disconnecting phenomenon caused by various poor building seams is uneasy to occur; the service life of a furnace lining can be extended.

Description

Wedged brick

The utility model relates to a kind of refractory brick, relates in particular to a kind of Wedged brick.

Refractory brick is the high temperature basic material that industrial department uses, and China's refractory material output was more than 800 ten thousand tons in 1991, and output of steel this shows that according to being that the 100Kg/t steel is 3～5 times of external similar ratio the consumption of China's refractory material is higher.

Rotary furnace is metallurgy, chemical industry, the medium-and-large-sized Thermal Equipment of manufacture of cement, and is long from 10 meters to more than 200 meters, and temperature is spent to 1500 degree from 100, and be the key that influences the equipment benefit service life of the liner of being made by refractory brick.Rotary furnace constantly rotates aborning, body of heater produces vibrations, and a lot of materials in metallurgical, the chemical industry have Acidity of Aikalinity, under high temperature friction and thermal current impact, clay slurry in the bonding crack of refractory brick easily is etched and comes off, promptly take off the brick phenomenon, if take off the more just necessary shutdown maintenance comprehensively of brick, furnace outage time at least 30～50 hour, in only 3～4 months average life of metallurgical, chemical industry revolution furnace lining high temperature section, the second-hand brick of generally changing, only 0～2 millimeter of its wear extent, and average 3～4 millimeters of furnace high-temperature district brickwork joint, the wideest seam reaches 8 millimeters.

The refractory brick that is used to build the rotary furnace liner at present all adopts wedge shape refractory brick, and its shape is used this kind wedge shape refractory brick as shown in Figure 1 and Figure 2, and its brickwork joint is often in conjunction with bad, seek its reason have following some:

One, the vertical brickwork joint of rotary furnace liner does not allow above 2 millimeters, laterally seam is no more than 3 millimeters (seeing brickwork worker handbook P562), and in fact because brick dimensional discrepancy seconds is ± 2 millimeters (seeing refractory material application manual P284), so build the brickwork joint majority by laying bricks or stones is 1～2 millimeter, and therefore annular brick is in conjunction with always there being the gap.

Two, brickwork joint is of low quality in conjunction with the clay slurry, general all is that the density of on-the-spot preparation clay slurry and intensity are all than refractory brick difference, it is the weak spot in fire district, when corroded by high-temperature material and gas shock is easy to combine with molten slag and takes off seam, in the second-hand brick that certain factory pulls down, find that most bricks only simultaneously have the clay vestige, and all the other are worn-out furs on four sides.

Three, the rotary kiln diameter is bigger, and general diameter is 1.5～4.5 meters, and the angle of wedge of brick is little, only 5～10 millimeters of major part and microcephaly's differences, if brick shape error is ± 2 millimeters, the brick that has is approximate to be straight shape brick, if in conjunction with bad, just come off easily (seeing anti-real handbook P592).

Make the brickwork joint minimizing or the appearance and size precision of brick is improved, to set about from the profile of brick nothing more than, at present the most refractory factories of China all do not have the outer finishing means of brick, and too strict requirement not only makes cost improve, and difficultly reach desirable result of use yet.

The purpose of this utility model is exactly a kind of Wedged brick that provides at above-mentioned problems of the prior art, and this Wedged brick profile is reasonable, and convex-concave is used, and is difficult for coming unstuck cracking, and can prolong its service life.

The purpose of this utility model realizes in the following manner: this Wedged brick is to be provided with corresponding convex-concave structure on the phase commissure wedge surface of arch brick, the projection on the commissure wedge surface of its each piece Wedged brick with match with groove on another commissure wedge surface of its tabling.

In the utility model, can be provided with an arc convex on a side wedge surface of arch brick, the opposite side wedge surface is provided with an arc groove, and the monolithic brick is that unit convex-concave phase scarf closes use; Also can on the wedge surface of the both sides of voussoir brick, respectively be provided with an arc convex, respectively be provided with an arc groove on the both sides wedge surface of another voussoir brick that matches with it, close use with two bricks as unit convex-concave phase scarf when using.

Advantage of the present utility model is: owing to be provided with convex arc or groove on the wedge surface of arch brick, convex-concave phase scarf closes during use, form commissure, can encircle the block or the fissure of displacement builds by laying bricks or stones, because the commissure place reaches 25 millimeters deep (radius of convex-concave arc is 25 millimeters), therefore various puzzle joints are bad and cause that the phenomenon that comes off just is difficult for having taken place, and prolonged the service life of furnace lining.In addition, convex arc has minus deviation during fabrication, and concave arc has overgauge, cooperatively interacts to make the quality when building stove that assurance arranged.This Wedged brick promptly can be used for rotary kiln, also can be used for various heating furnace vault arched door.At present, the whole nation consumes about 2,000,000 tons arch brick year, if promote the use of this Wedged brick, lining durability is prolonged more than one times, can save 1,000,000 tons in 1 year, if by 700 yuan of calculating per ton, can save 700,000,000 yuans in 1 year, also reduce various blowing out losses simultaneously, reduced cost, the economic benefit highly significant.

The drawing of accompanying drawing is described as follows:

Fig. 1 is the front view of existing arch brick.

Fig. 2 is the side view of Fig. 1.

Fig. 3 is the front view of the utility model one protruding spill Wedged brick.

Fig. 4 is the side view of Fig. 3.

Fig. 5 is the front view of the lenticular Wedged brick of the utility model.

Fig. 6 is the side view of Fig. 5.

Fig. 7 is the front view of the utility model double concave Wedged brick.

Fig. 8 is the side view of Fig. 7.

The utility model is done with detailed description below in conjunction with accompanying drawing:

As shown in the figure: this Wedged brick is to be provided with corresponding convex-concave structure on the phase commissure wedge surface of arch brick (1), the arc convex (2) on the commissure wedge surface of its each piece Wedged brick with match with the connected in star (3) of arc on another commissure wedge surface of its tabling.

In the utility model, can be provided with an arc convex on a side wedge surface of arch brick, the opposite side wedge surface is provided with an arc groove (as shown in Figure 3, Figure 4), is that unit convex-concave phase scarf closes use with the monolithic brick; Also can on the wedge surface of the both sides of voussoir brick, respectively be provided with an arc convex, respectively be provided with an arc groove (as Fig. 5, Fig. 6, Fig. 7, shown in Figure 8) on the both sides wedge surface of another voussoir brick that matches with it, close use with two bricks as unit convex-concave phase scarf when using.

Claims

1, a kind of Wedged brick, it is characterized in that: on the phase commissure wedge surface of arch brick (1), be provided with corresponding convex-concave structure, the projection (2) on the commissure wedge surface of its each piece Wedged brick with match with groove (3) on another commissure wedge surface of its tabling.

2, Wedged brick according to claim 1 is characterized in that: be provided with an arc convex on a side wedge surface of arch brick, the opposite side wedge surface is provided with an arc groove.

3, Wedged brick according to claim 1 is characterized in that: respectively be provided with an arc convex on the wedge surface of the both sides of voussoir brick, respectively be provided with an arc groove on the both sides wedge surface of another voussoir brick that matches with it.