CN217520241U

CN217520241U - Trolley type silicon-carbon rod high-temperature resistance furnace lining with automatic oxide skin falling function

Info

Publication number: CN217520241U
Application number: CN202220868950.6U
Authority: CN
Inventors: 崔宇; 雷正龙
Original assignee: Harbin Mingyang Furnace Industry Co ltd
Current assignee: Harbin Mingyang Furnace Industry Co ltd
Priority date: 2022-04-15
Filing date: 2022-04-15
Publication date: 2022-09-30
Anticipated expiration: 2032-04-15

Abstract

The invention relates to a trolley-type silicon-carbon rod high-temperature resistance furnace lining with an automatic oxide skin dropping function, wherein the fire-facing surface of a refractory concrete lining is provided with a 45-degree inclined surface, so that the oxide skin dropping on the inclined surface can automatically drop, and the risks of uneven surface resistance and local short circuit of a silicon-carbon rod body caused by repeated accumulation of the oxide skin are solved. In addition, the invention provides an ㄣ -shaped anchor brick hook, the lower end of the hook is inserted in the anchor brick hook tube seat, the outer diameter of the ㄣ -shaped anchor brick hook is smaller than the inner diameter of the anchor brick hook tube seat, and the ㄣ -shaped anchor brick hook can rotate around the anchor brick hook tube seat under the action of external force, so that the shearing of the anchor brick caused by the thermal expansion of a furnace wall can be effectively eliminated, the stability and the deformation resistance of the furnace wall are improved, and the service life is prolonged.

Description

Trolley type silicon-carbon rod high-temperature resistance furnace lining with automatic oxide skin falling function

Technical Field

The invention relates to the field of industrial furnaces, in particular to a trolley type silicon carbide rod high-temperature resistance furnace lining with an automatic oxide skin falling function.

Background

The trolley type silicon carbide rod high-temperature resistance furnace is a furnace which takes electric energy as a medium and is heated by a silicon carbide rod of an electric heating element. The workpiece can generate oxide skin in the high-temperature heating process, when the temperature is higher than 570 ℃, the texture is compact, red oxide skin can be generated between black oxide skin which is not easy to fall off and steel, the red oxide skin is loose in texture and easy to fall off, if the oxide skin falls off at the root of the silicon carbide rod and is mutually accumulated, uneven surface resistance and local short circuit overheating of the silicon carbide rod body can be easily caused, even the silicon carbide rod can be burnt off, and the service life of the silicon carbide rod can be terminated in advance. The trolley-type silicon-carbon rod high-temperature resistance furnace has the advantages that the working temperature is high, and the heating element adopts the silicon-carbon rod, so that the furnace lining is provided with a plurality of silicon-carbon rod mounting holes, and the trolley-type silicon-carbon rod high-temperature resistance furnace lining adopts a composite structure of refractory fiber and refractory concrete. In order to improve the strength of the refractory concrete lining, a certain number of anchoring pieces are installed, one ends of the anchoring pieces are welded on a furnace body steel plate and are buried in the refractory concrete, the most important thing is that the anchoring pieces are reliably connected with a metal furnace shell when being installed, and if the connection is not good, the refractory concrete lining can be stretched out or even collapsed in a high-temperature state.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the trolley type silicon-carbon rod high-temperature resistance furnace lining with the function of automatically dropping the oxide skin, the fire-facing surface of the refractory concrete lining is provided with a 45-degree inclined surface, so that the oxide skin dropping on the inclined surface can automatically drop, and the risks of uneven surface resistance and local short circuit of a silicon-carbon rod body caused by repeated accumulation of the oxide skin are solved. In addition, the invention provides an ㄣ -shaped anchor brick hook, the lower end of the hook is inserted in the anchor brick hook tube seat, the outer diameter of the ㄣ -shaped anchor brick hook is smaller than the inner diameter of the anchor brick hook tube seat, and the ㄣ -shaped anchor brick hook can rotate around the anchor brick hook tube seat under the action of external force, so that the shearing of the anchor brick caused by the thermal expansion of a furnace wall can be effectively eliminated, the stability and the deformation resistance of the furnace wall are improved, and the service life is prolonged.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a trolley type silicon-carbon rod high-temperature resistance furnace lining with an automatic scale cinder dropping function comprises a furnace body section steel, a furnace body steel plate, an ㄣ -shaped anchoring brick hook, a first anchoring brick, a second anchoring brick, a fiber blanket, a refractory clay brick, a refractory castable, a refractory fiber block and an anchoring brick hook pipe seat; the furnace body steel plate is welded with the furnace body steel plate, the anchoring brick hook tube seat is welded on the inner side of the furnace body steel plate, the lower end of the ㄣ -shaped anchoring brick hook is inserted into the anchoring brick hook tube seat, the outer diameter of the ㄣ -shaped anchoring brick hook is smaller than the inner diameter of the anchoring brick hook tube seat, and the first anchoring brick and the second anchoring brick are inserted into the upper end of the ㄣ -shaped anchoring brick hook. The fiber blanket is arranged close to the furnace body steel plate, and a refractory clay brick is arranged between the fiber blanket and the refractory castable.

Has the advantages that: the fire facing surface of the castable at the bottom of the furnace lining adopts a 45-degree inclined surface, so that oxide skin falling on the furnace lining can automatically fall off, and uneven surface resistance and local short circuit burning of the silicon carbide rod body are prevented; in addition, the castable furnace wall anchoring brick adopts an ㄣ -shaped anchoring piece, so that the shearing of the furnace wall thermal expansion on the anchoring brick can be effectively eliminated, the stability and the deformation resistance of the furnace wall are improved, and the service life is prolonged.

Drawings

FIG. 1 is a three-dimensional schematic diagram of the distribution of the anchoring bricks of the furnace lining of the trolley type silicon carbide rod high-temperature resistance furnace with the function of automatically dropping the oxide skin.

FIG. 2 is a three-dimensional schematic view of a furnace lining of the trolley-type silicon carbide rod high-temperature resistance furnace with the function of automatically dropping oxide skin.

FIG. 3 is a three-dimensional schematic view of the installation and fixation of the car-type silicon carbide rod high-temperature resistance furnace lining anchor brick with the function of automatically dropping the oxide skin and the hook of the ㄣ -shaped anchor brick.

FIG. 4 is a schematic cross-sectional view of a furnace lining of the trolley-type silicon carbide rod high-temperature resistance furnace with the function of automatically dropping oxide skin.

In the figure:

1-furnace body section steel; 2-furnace body steel plate; 3- "ㄣ" shape anchoring brick hook; 4-anchoring brick No. one; 5-second anchoring brick; 6-fiber blanket; 7-refractory clay brick; 8-refractory castable; 9-refractory fiber block; 10-anchor brick hook tube seat; an 11-45 degree inclined plane; 12-silicon carbide rod mounting holes.

Detailed Description

Example 1:

as shown in fig. 1-4, a car-type silicon carbide rod high-temperature resistance furnace lining with an automatic scale cinder dropping function comprises a furnace body section steel 1, a furnace body steel plate 2, an ㄣ -shaped anchoring brick hook 3, a first anchoring brick 4, a second anchoring brick 5, a fiber blanket 6, a refractory clay brick 7, a refractory castable 8, a refractory fiber block 9 and an anchoring brick hook tube seat 10, wherein the furnace body section steel 1 is welded with the furnace body steel plate 2, the anchoring brick hook tube seat 10 is welded on the inner side of the furnace body steel plate 2, the lower end of the ㄣ -shaped anchoring brick hook 3 is inserted into the anchoring brick hook tube seat 10, the outer diameter of the ㄣ -shaped anchoring brick hook 3 is smaller than the inner diameter of the anchoring brick hook tube seat 10, and the length of the first anchoring brick 4 is greater than the length of the second anchoring brick 5; the first anchor brick 4 and the second anchor brick 5 are inserted into the upper end of the ㄣ -shaped anchor brick hook 3, so that when the refractory castable shrinks and expands at high temperature, the refractory castable shrinks and expands at a temperature below 1400 ℃, and the refractory castable expands from shrinking to shrinking at a temperature above 1500 ℃, and the shrinking or expanding forces the first anchor brick 4 and the second anchor brick 5 to displace a certain amount, and the ㄣ -shaped anchor brick hook 3 can slightly rotate around the anchor brick hook pipe seat 10 under the action of external force, so that the shearing of the furnace wall heat expansion on the anchor bricks can be effectively eliminated, the stability and the deformation resistance of the furnace wall are improved, and the service life is prolonged. The refractory castable 8 can be low-cement high-alumina refractory castable, the fiber blanket 6 is tightly attached to the furnace body steel plate 2, two layers of staggered joints are tiled for heat insulation, and the refractory clay bricks 7 are arranged between the fiber blanket 6 and the refractory castable 8 to play a certain role in supporting and insulating heat. The fire-facing surface of the refractory castable 8 is poured into a 45-degree inclined surface, so that oxide skin generated by a workpiece at high temperature falls off the 45-degree inclined surface by virtue of self weight, and the silicon carbide rod body is prevented from being burnt out due to uneven surface resistance and local short circuit.

Example 2:

a trolley type silicon-carbon rod high-temperature resistance furnace lining with an automatic scale cinder dropping function comprises furnace body section steel, a furnace body steel plate, an ㄣ -shaped anchoring brick hook, a first anchoring brick, a second anchoring brick, a fiber blanket, a refractory clay brick, a refractory castable, a refractory fiber block and an anchoring brick hook tube seat, wherein the furnace body section steel is welded with the furnace body steel plate, the anchoring brick hook tube seat is welded on the inner side of the furnace body steel plate, the lower end of the ㄣ -shaped anchoring brick hook is inserted into the anchoring brick hook tube seat, the outer diameter of the ㄣ -shaped anchoring brick hook is smaller than the inner diameter of the anchoring brick hook tube seat, and the first anchoring brick and the second anchoring brick are inserted into the upper end of the ㄣ -shaped anchoring brick hook. The fiber blanket is tightly attached to the steel plate of the furnace body, two layers of staggered joints are tiled, and a refractory clay brick is arranged between the fiber blanket and the refractory castable.

Example 3:

the utility model provides a trolley-type elema high temperature resistance furnace wall with automatic function that drops of cinder, trolley-type elema high temperature resistance furnace wall with automatic function that drops of cinder comprises refractory castable and refractory fiber, because the refractory castable is longe-lived, is convenient for mechanized construction and can adapt to advantages such as complicated structural shape, so the fire door of furnace body bottom and both sides adopts refractory castable. Because the heat conductivity of the refractory fiber product is low, the density is small, and the specific heat capacity is close to that of a common refractory brick, the heat storage loss can be greatly reduced, and therefore, except that the bottom of the furnace body and furnace mouths on two sides of the furnace body adopt refractory castable, other parts all adopt refractory fibers. The fire-facing surface of the refractory castable at the bottom of the furnace lining is provided with a 45-degree inclined surface, an anchoring brick is arranged in the interior of the refractory castable, the anchoring brick is inserted into the upper end of an ㄣ -shaped anchoring brick hook, the lower end of a ㄣ -shaped anchoring brick hook is inserted into the interior of an anchoring brick hook tube seat, the outer diameter of a ㄣ -shaped anchoring brick hook is smaller than the inner diameter of the anchoring brick hook tube seat, the anchoring brick hook tube seat is welded on the inner surface of a furnace body steel plate, two layers of refractory fiber blankets are flatly paved clinging to the inner surface of the furnace body steel plate in a staggered way, and refractory clay bricks are arranged between the refractory fiber blankets and the refractory castable.

Example 4:

a car-type silicon-carbon rod high-temperature resistance furnace lining with an automatic scale cinder dropping function comprises a furnace body section steel 1, a furnace body steel plate 2, an ㄣ -shaped anchoring brick hook 3, a first anchoring brick 4, a second anchoring brick 5, a fiber blanket 6, a refractory clay brick 7, a refractory castable 8, a refractory fiber block 9 and an anchoring brick hook tube seat 10, wherein the furnace body steel plate 2 is welded on the inner side of the furnace body section steel 1, the anchoring brick hook tube seat 10 is welded on the inner side of the furnace body steel plate 2, the lower end of the ㄣ -shaped anchoring brick hook 3 is inserted into the anchoring brick hook tube seat 10, the outer diameter of the ㄣ -shaped anchoring brick hook 3 is smaller than the inner diameter of the anchoring brick hook tube seat 10, and the length of the first anchoring brick 4 is greater than the length of the second anchoring brick 5; the first anchoring brick 4 and the second anchoring brick 5 are respectively inserted at the upper ends of the ㄣ -shaped anchoring brick hooks 3, and a 45-degree inclined surface 11 is arranged on the fire facing surface of the refractory castable 8 at the bottom of the furnace lining; the oxide skin generated by the workpiece falls on the 45-degree inclined plane at high temperature and falls off by virtue of self-weight, so that uneven surface resistance and local short circuit burning of the silicon carbide rod body are prevented. The fiber blanket 6 is tightly attached to the inner side of the furnace body steel plate, two layers of the fiber blanket 6 are flatly paved at staggered joints, and a refractory clay brick 7 is arranged between the fiber blanket 6 and the refractory castable 8; a silicon carbide rod mounting hole 12 is formed in the surface of the refractory castable 8, and a silicon carbide rod is arranged in the silicon carbide rod mounting hole 12; fire-resistant castable 8 is arranged at the bottom of the furnace body and at furnace mouths at two sides of the furnace body; the upper part of the furnace body section steel 1 is provided with a refractory fiber block 9.

Claims

1. A trolley-type silicon carbide rod high-temperature resistance furnace lining with an automatic scale cinder dropping function is characterized by comprising furnace body section steel (1), a furnace body steel plate (2), an ㄣ -shaped anchoring brick hook (3), a first anchoring brick (4), a second anchoring brick (5), a fiber blanket (6), a refractory clay brick (7), a refractory castable (8), a refractory fiber block (9) and an anchoring brick hook tube seat (10), wherein the furnace body steel plate (2) is welded on the inner side of the furnace body section steel (1), the anchoring brick hook tube seat (10) is welded on the inner side of the furnace body steel plate (2), the lower end of the ㄣ -shaped anchoring brick hook (3) is inserted into the anchoring brick hook tube seat (10), the outer diameter of the ㄣ -shaped anchoring brick hook (3) is smaller than the inner diameter of the anchoring brick hook tube seat (10), and the first anchoring brick (4) and the second anchoring brick (5) are inserted into the upper end of the ㄣ -shaped anchoring brick hook tube seat (3), a 45-degree inclined plane (11) is arranged on the fire-facing surface of the refractory castable (8) at the bottom of the furnace lining; the scale produced by the workpiece at high temperature falls on the 45-degree inclined plane and falls off by means of self weight.

2. The trolley-type silicon-carbon rod high-temperature resistance furnace lining with the automatic scale cinder dropping function according to claim 1, wherein a fiber blanket (6) is tightly attached to the inner side of a steel plate of a furnace body, two layers of the fiber blanket (6) are arranged in a staggered and flat manner, and a refractory clay brick (7) is arranged between the fiber blanket (6) and a refractory castable (8).

3. The trolley-type silicon-carbon rod high-temperature resistance furnace lining with the function of automatically dropping the oxide skin according to claim 2, wherein a silicon-carbon rod mounting hole (12) is formed in the surface of the refractory castable (8), and a silicon-carbon rod is arranged in the silicon-carbon rod mounting hole (12).

4. The car-type silicon carbide rod high-temperature resistance furnace lining with the function of automatically dropping the oxide skin according to claim 3, wherein the furnace mouths at the bottom and two sides of the furnace body are provided with refractory castable (8).

5. The car-type silicon carbide rod high-temperature resistance furnace lining with the function of automatically dropping the oxide scale according to claim 4, wherein the upper part of the furnace body section steel (1) is provided with a refractory fiber block (9).

6. The trolley type silicon-carbon rod high-temperature resistance furnace lining with the scale self-shedding function according to claim 5, wherein the length of the first anchoring brick (4) is greater than that of the second anchoring brick (5).