CN211233939U

CN211233939U - Refractory brick for electric heating furnace

Info

Publication number: CN211233939U
Application number: CN201922379901.7U
Authority: CN
Inventors: 朱军; 崔恒洋; 王辉宇; 朱慧; 朱卫国
Original assignee: Dongtai Center Heat Resistant Materials Co ltd
Current assignee: Dongtai Center Heat Resistant Materials Co ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-08-11
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses a refractory brick for an electric heating furnace, which comprises a brick body, wherein a fixed shell is arranged outside the brick body, the upper part of the brick body is provided with an installation groove, the bottom of the brick body is provided with an installation block, the inner side of the brick body is provided with a composite layer, the composite layer consists of a fire-resistant layer, a heat-insulating layer, a composite foamed cement layer and an anti-cracking layer, the fire-resistant layer is arranged on the inner side of the heat-insulating layer, the heat-insulating layer is arranged on the inner side of the composite foamed cement layer, the composite foamed cement layer is arranged on the inner side of the anti-cracking layer, the inner side of the composite layer is fixedly provided with a connecting block, the heating wire heating device is characterized in that a clamping groove is formed in the connecting block, a clamping block is arranged in the clamping groove, one end, extending out of the clamping groove, of the clamping block is fixedly connected with the connecting rod, a supporting rod is sleeved on the outer side of the connecting rod, and a heating wire is arranged on the supporting rod. The refractory brick has good heat resistance, strong heat preservation capability and long service life, and can be provided with heating wires.

Description

Refractory brick for electric heating furnace

Technical Field

The utility model belongs to the technical field of resistant firebrick, concretely relates to well formula electric heat is resistant firebrick for stove.

Background

The firebricks are called firebricks for short. Refractory bricks of a certain shape and size are relatively common thermal insulation materials in high-temperature firing furnaces. The brick can be divided into fired brick, unfired brick, fused cast brick and refractory heat-insulating brick according to the preparation process; it can be divided into standard brick, common brick, special shaped brick, etc. according to shape and size. Can be used as high-temperature building materials and structural materials of construction kilns and various thermal equipment, and can bear various physical and chemical changes and mechanical actions at high temperature. The refractory brick is easy to crack and peel under the action of expansion with heat and contraction with cold due to large temperature difference between the gap of rapid cooling and rapid heating and the gap of use, and the integrity of the refractory brick is affected.

The refractory bricks for electric heating furnaces on the market at present are easy to crack due to expansion with heat and contraction with cold, have short service life and are not provided with a structure for installing an electric heating wire. Therefore, a novel refractory brick for the electric heating furnace is required to be put into practical use.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric heating furnace is with resistant firebrick to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a resistant firebrick for electric heat furnace, includes the brick body, the outside of the brick body is provided with fixed shell, the upper portion of the brick body is provided with the mounting groove, the bottom of the brick body is provided with the installation piece, the inboard of the brick body sets up the composite bed, the composite bed comprises flame retardant coating, heat preservation, insulating layer, compound foaming cement layer, crack control layer, the flame retardant coating sets up in the heat preservation inboard, the heat preservation sets up in the insulating layer inboard, the insulating layer sets up in compound foaming cement layer inboard, compound foaming cement layer sets up in crack control layer inboard, the inboard fixed mounting of composite bed has the connecting block, the draw-in groove has been seted up in the connecting block, be provided with the fixture block in the draw-in groove, the one end and the connecting rod fixed connection that the.

Preferably, a plurality of through holes are formed in the anti-cracking layer, and reinforcing steel bars are arranged in the through holes.

Preferably, the brick body, the composite layer and the fixed shell are combined to form a semicircular firebrick, and the thickness of the heat insulation layer is greater than that of the composite foamed cement layer.

Preferably, a cushion pad is arranged between the outer side of the brick body and the fixed shell, and two ends of the fixed shell are fixed on the inner side of the composite layer.

Preferably, the positions of the mounting blocks arranged on the upper part of the brick body correspond to the positions of the mounting grooves on the lower part of the brick body, and the number of the mounting blocks is 4.

The utility model discloses a technological effect and advantage:

1. the refractory brick for the electric heating furnace is characterized in that a composite layer is arranged on the inner side of a brick body and consists of a fire retardant coating, a heat preservation layer, a heat insulation layer, a composite foamed cement layer and an anti-cracking layer, the fire retardant coating is arranged on the inner side of the heat preservation layer, the heat preservation layer is arranged on the inner side of the heat insulation layer, the composite foamed cement layer is arranged on the inner side of the anti-cracking layer, a plurality of through holes are formed in the anti-cracking layer, reinforcing steel bars are arranged in the through holes, a fixed shell is arranged outside the brick body and is used for providing primary mechanical reinforcement for the whole refractory brick, the heat insulation layer and the composite foamed cement layer are arranged in the composite layer and are used for limiting the transmission of heat to the anti-cracking layer, a certain space is provided for the expansion with heat and the contraction with cold inside the, the mechanical toughness of the anti-cracking layer is better enhanced, the cracking and falling of the refractory bricks are prevented, and the service life is prolonged.

2. This electric heating furnace is with nai firebrick, the inboard fixed mounting of composite bed has the connecting block, has seted up the draw-in groove in the connecting block, is provided with the fixture block in the draw-in groove, and the one end and the connecting rod fixed connection that the draw-in groove were stretched out to the fixture block have cup jointed the bracing piece in the connecting rod outside, are provided with the heating wire on the bracing piece, set up a structure that can the easy to assemble heating wire through.

Drawings

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

FIG. 2 is a schematic structural diagram of a composite layer of the present invention;

FIG. 3 is a schematic view of the connection block and the connection rod;

FIG. 4 is a schematic view of a mounting block and mounting slot mechanism;

FIG. 5 is a schematic view of a connecting block mechanism.

In the figure: 1 brick body, 2 composite layers, 3 blotter, 4 mounting grooves, 5 connecting blocks, 6 heating wires, 7 bracing pieces, 8 fixture blocks, 9 draw-in grooves, 10 connecting rods, 11 mounting blocks, 12 fixed shells, 13 reinforcing steel bars, 14 through holes, 21 flame retardant coatings, 22 heat preservation layers, 23 insulating layers, 24 composite foam cement, 25 anti-cracking layers.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a refractory brick for an electric heating furnace as shown in figures 1-5, which comprises a brick body 1, a fixed shell 12 is arranged outside the brick body 1, a mounting groove 4 is arranged on the upper part of the brick body 1, a mounting block 11 is arranged on the bottom of the brick body 1, a composite layer 2 is arranged on the inner side of the brick body 1, the composite layer 2 is composed of a fire-resistant layer 21, a heat-insulating layer 22, a heat-insulating layer 23, a composite foaming cement layer 24 and an anti-cracking layer 25, the fire-resistant layer 21 is arranged on the inner side of the heat-insulating layer 22, the heat-insulating layer 22 is arranged on the inner side of the heat-insulating layer 23, the heat-insulating layer 23 is arranged on the inner side of the composite foaming cement layer 24, the composite foaming cement layer 24 is arranged on the inner side of the anti-cracking layer 25, a connecting block 5 is fixedly arranged on the inner side of, the outer side of the connecting rod 10 is sleeved with a supporting rod 7, and the supporting rod 7 is provided with an electric heating wire 6.

Specifically, crack prevention layer 25 is inside to be provided with a plurality of through-hole 13, be provided with reinforcing bar 14 in the through-hole 13, the inside expend with heat and contract with cold of resistant firebrick that gives through setting up a certain amount of through-hole 13 provides certain space, and reinforcing bar 14 is dragging inside the through-hole simultaneously and is providing the pulling force and prevent the fracture, the better mechanical toughness who has strengthened crack prevention layer 25.

Specifically, the combination of the brick body 1, the composite bed 2 and the fixed shell 12 constitutes the annular firebrick of semicircle, the thickness of insulating layer 23 is greater than the thickness of composite foaming cement layer 24, and the design of semicircle makes things convenient for the installation of electric heater, reduces the joint line between the fragment of brick and has strengthened heat retaining ability, and insulating layer 23 is that the thermal-insulated functional layer of first layer plays main thermal-insulated effect, and composite foaming cement layer 24 is supplementary thermal-insulated, and two sections are thermal-insulated effectual prevents that excessive heat from causing the damage of heat-resisting brick to the expend with heat and contract with cold that crack control layer transmission leads to, improve life.

Specifically, set up blotter 3 between the outside of the brick body 1 and the fixed shell 12, and the both ends of fixed shell 12 are fixed in the inboard of composite bed 2, have guaranteed also to prevent the cracked that collides with and causes in the resistant firebrick handling when closely laminating of brick body 1 and fixed shell 12, and fixed shell 12 has carried out a preliminary mechanical reinforcement to whole resistant firebrick.

Specifically, the positions of the installation blocks 11 arranged on the upper portion of the brick body 1 correspond to the positions of the installation grooves on the lower portion, the number of the installation blocks is 4, and the installation blocks 11 at the bottom end of the upper refractory brick are matched with the installation grooves 4 arranged at the upper end of the lower refractory brick to realize fixation and installation.

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

1. Refractory brick for electric heating furnace, including the brick body (1), its characterized in that: the brick is characterized in that a fixed shell (12) is arranged outside the brick body (1), a mounting groove (4) is arranged on the upper portion of the brick body (1), a mounting block (11) is arranged at the bottom of the brick body (1), a composite layer (2) is arranged on the inner side of the brick body (1), the composite layer (2) is composed of a fire-resistant layer (21), a heat-insulating layer (22), a heat-insulating layer (23), a composite foamed cement layer (24) and an anti-cracking layer (25), the fire-resistant layer (21) is arranged on the inner side of the heat-insulating layer (22), the heat-insulating layer (22) is arranged on the inner side of the heat-insulating layer (23), the heat-insulating layer (23) is arranged on the inner side of the composite foamed cement layer (24), the composite foamed cement layer (24) is arranged on the inner side of the anti-cracking layer (25), a, the heating wire clamping device is characterized in that a clamping block (8) is arranged in the clamping groove (9), one end, extending out of the clamping groove (9), of the clamping block (8) is fixedly connected with a connecting rod (10), a supporting rod (7) is sleeved on the outer side of the connecting rod (10), and a heating wire (6) is arranged on the supporting rod (7).

2. The refractory brick for electric furnaces as claimed in claim 1, wherein: a plurality of through holes (13) are formed in the anti-cracking layer (25), and reinforcing steel bars (14) are arranged in the through holes (13).

3. The refractory brick for electric furnaces as claimed in claim 1, wherein: the brick body (1), the composite layer (2) and the fixed shell (12) are combined to form a semicircular firebrick, and the thickness of the heat insulation layer (23) is larger than that of the composite foamed cement layer (24).

4. The refractory brick for electric furnaces as claimed in claim 1, wherein: a cushion pad (3) is arranged between the outer side of the brick body (1) and the fixed shell (12), and two ends of the fixed shell (12) are fixed on the inner side of the composite layer (2).

5. The refractory brick for electric furnaces as claimed in claim 1, wherein: the positions of the mounting blocks (11) arranged on the upper part of the brick body (1) correspond to the positions of the mounting grooves on the lower part, and the number of the mounting blocks is 4.